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Found 37684 matches. Displaying 6031-6040
Heler R, Samai P, Modell JW, Weiner C, Goldberg GW, Bikard D, Marraffini LA
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Cas9 specifies functional viral targets during CRISPR-Cas adaptation
NATURE 2015 MAR 12; 519(7542):199-202
Clustered regularly interspaced short palindromic repeat (CRISPR) loci and their associated (Cas) proteins provide adaptive immunity against viral infection in prokaryotes. Upon infection, short phage sequences known as spacers integrate between CRISPR repeats and are transcribed into small RNA molecules that guide the Cas9 nuclease to the viral targets (protospacers). Streptococcus pyogenes Cas9 cleavage of the viral genome requires the presence of a 5'-NGG-3' protospacer adjacent motif (PAM) sequence immediately downstream of the viral target. It is not known whether and how viral sequences flanked by the correct PAM are chosen as new spacers. Here we show that Cas9 selects functional spacers by recognizing their PAM during spacer acquisition. The replacement of cas9 with alleles that lack the PAM recognition motif or recognize an NGGNG PAM eliminated or changed PAM specificity during spacer acquisition, respectively. Cas9 associates with other proteins of the acquisition machinery (Cas1, Cas2 and Csn2), presumably to provide PAM-specificity to this process. These results establish a new function for Cas9 in the genesis of prokaryotic immunological memory.
Lee J, Breton G, Oliveira TYK, Zhou YJ, Aljoufi A, Puhr S, Cameron MJ, Sekaly RP, Nussenzweig MC, Liu K
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Restricted dendritic cell and monocyte progenitors in human cord blood and bone marrow
JOURNAL OF EXPERIMENTAL MEDICINE 2015 MAR; 212(3):385-399
In mice, two restricted dendritic cell (DC) progenitors, macrophage/dendritic progenitors (MDPs) and common dendritic progenitors (CDPs), demonstrate increasing commitment to the DC lineage, as they sequentially lose granulocyte and monocyte potential, respectively. Identifying these progenitors has enabled us to understand the role of DCs and monocytes in immunity and tolerance in mice. In humans, however, restricted monocyte and DC progenitors remain unknown. Progress in studying human DC development has been hampered by lack of an in vitro culture system that recapitulates in vivo DC hematopoiesis. Here we report a culture system that supports development of CD34(+) hematopoietic stem cell progenitors into the three major human DC subsets, monocytes, granulocytes, and NK and B cells. Using this culture system, we defined the pathway for human DC development and revealed the sequential origin of human DCs from increasingly restricted progenitors: a human granulocyte-monocyte-DC progenitor (hGMDP) that develops into a human monocyte-dendritic progenitor (hMDP), which in turn develops into monocytes, and a human CDP (hCDP) that is restricted to produce the three major DC subsets. The phenotype of the DC progenitors partially overlaps with granulocyte-macrophage progenitors (GMPs). These progenitors reside in human cord blood and bone marrow but not in the blood or lymphoid tissues.
da Rosa JC, Malajian D, Shemer A, Rozenblit M, Dhingra N, Czarnowicki T, Khattri S, Ungar B, Finney R, Xu H, Zheng XZ, Estrada YD, Peng XY, Suarez-Farinas M, Krueger JG, Guttman-Yassky E
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Patients with atopic dermatitis have attenuated and distinct contact hypersensitivity responses to common allergens in skin
JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY 2015 MAR; 135(3):712-720
Background: Atopic dermatitis (AD) is the most common inflammatory disease. The prevalence of allergic contact dermatitis to allergens (eg, fragrance) is higher in patients with AD, despite a trend toward weaker clinical allergic contact dermatitis reactions. The role of the AD skin phenotype in modulating allergic sensitization to common sensitizers has not been evaluated. Objective: We sought to investigate whether patients with AD have altered tissue immune responses on allergen challenge. Methods: Gene expression and immunohistochemistry studies were performed on biopsy specimens from 10 patients with AD and 14 patients without AD patch tested with common contact allergens (nickel, fragrance, and rubber). Results: Although 1085 differentially expressed genes (DEGs) were commonly modulated in patch-tested skin from patients with AD and patients without AD versus control skin, 1185 DEGs were uniquely altered in skin from patients without AD, and only 246 DEGs were altered in skin from patients with AD. Although many inflammatory products (ie, matrix metalloproteinase 12/matrix metalloproteinase 1/S100A9) were upregulated in both groups, higher-magnitude changes and upregulation of interferon responses were evident only in the non-AD group. Stratification by allergen showed decreased expression of immune, T(H)1-subset, and T(H)2-subset genes in nickel-related AD responses, with increasedT(H)17/IL-23 skewing. Rubber/fragrance showed similar trends of lesser magnitude. Negative regulators showed higher expression in patients with AD. Conclusions: Through contact sensitization, our study offers new insights into AD. Allergic immune reactions were globally attenuated and differentially polarized in patients with AD, with significant decreases in levels of T(H)1 products, some increases in levels of T(H)17 products, and inconsistent upregulation in levels of T(H)2 products. The overall hyporesponsiveness in skin from patients with background AD might be explained by baseline immune abnormalities, such as increased T(H)2, T(H)17, and negative regulator levels compared with those seen in non-AD skin.
Khachatryan V, Sirunyan AM, Tumasyan A, Adam W, Bergauer T, Dragicevic M, Ero J, Fabjan C, Friedl M, Fruhwirth R, Ghete VM, Hartl C, Hormann N, Hrubec J, Jeitler M, Kiesenhofer W, Knunz V, Krammer M, Kratschmer I, Liko D, Mikulec I, Rabady D, Rahbaran B, Rohringer H, Schofbeck R, Strauss J, Taurok A, Treberer-Treberspurg W, Waltenberger W, Wulz CE, Mossolov V, Shumeiko N, Gonzalez JS, Alderweireldt S, Bansal M, Bansal S, Cornelis T, De Wolf EA, Janssen X, Knutsson A, Luyckx S, Ochesanu S, Rougny R, De Klundert MV, Van Haevermaet H, Van Mechelen P, Van Remortel N, Van Spilbeeck A, Blekman F, Blyweert S, D'Hondt J, Daci N, Heracleous N, Keaveney J, Lowette S, Maes M, Olbrechts A, Python Q, Strom D, Tavernier S, Van Doninck W, Van Mulders P, Van Onsem GP, Villella I, Caillol C, Clerbaux B, De Lentdecker G, Dobur D, Favart L, Gay APR, Grebenyuk A, Leonard A, Mohammadi A, Pernie L, Reis T, Seva T, Thomas L, Velde CV, Vanlaer P, Wang J, Zenoni F, Adler V, Beernaert K, Benucci L, Cimmino A, Costantini S, Crucy S, Dildick S, Fagot A, Garcia G, Mccartin J, Rios AAO, Ryckbosch D, Diblen SS, Sigamani M, Strobbe N, Thyssen F, Tytgat M, Yazgan E, Zaganidis N, Basegmez S, Beluffi C, Bruno G, Castello R, Caudron A, Ceard L, Da Silveira GG, Delaere C, du Pree T, Favart D, Forthomme L, Giammanco A, Hollar J, Jafari A, Jez P, Komm M, Lemaitre V, Nuttens C, Pagano D, Perrini L, Pin A, Piotrzkowski K, Popov A, Quertenmont L, Selvaggi M, Marono MV, Garcia JMV, Beliy N, Caebergs T, Daubie E, Hammad GH, Alda WL, Alves GA, Brito L, Martins MC, Martins TR, Herrera CM, Pol ME, Carvalho W, Chinellato J, Custodio A, Da Costa EM, Damiao DD, Martins CD, De Souza SF, Malbouisson H, Figueiredo DM, Mundim L, Nogima H, Da Silva WLP, Santaolalla J, Santoro A, Sznajder A, Manganote EJT, Pereira AV, Bernardes CA, Dogra S, Tomei TRFP, Gregores EM, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Genchev V, Iaydjiev P, Marinov A, Piperov S, Rodozov M, Stoykova S, Sultanov G, Tcholakov V, Vutova M, Dimitrov A, Glushkov I, Hadjiiska R, Kozhuharov V, Litov L, Pavlov B, Petkov P, Bian JG, Chen GM, Chen HS, Chen M, Du R, Jiang CH, Plestina R, Tao J, Wang Z, Asawatangtrakuldee C, Ban Y, Liu S, Mao Y, Qian SJ, Wang D, Zhang L, Zou W, Avila C, Sierra LFC, Florez C, Gomez JP, Moreno BG, Sanabria JC, Godinovic N, Lelas D, Polic D, Puljak I, Antunovic Z, Kovac M, Brigljevic V, Kadija K, Luetic J, Mekterovic D, Sudic L, Attikis A, Mavromanolakis G, Mousa J, Nicolaou C, Ptochos F, Razis PA, Bodlak M, Finger M, Finger M, Assran Y, Kamel AE, Mahmoud MA, Radi A, Kadastik M, Murumaa M, Raidal M, Tiko A, Eerola P, Fedi G, Voutilainen M, Harkonen J, Karimaki V, Kinnunen R, Kortelainen MJ, Lampen T, Lassila-Perini K, Lehti S, Linden T, Luukka P, Maenpaa T, Peltola T, Tuominen E, Tuominiemi J, Tuovinen E, Wendland L, Talvitie J, Tuuva T, Besancon M, Couderc F, Dejardin M, Denegri D, Fabbro B, Faure JL, Favaro C, Ferri F, Ganjour S, Givernaud A, Gras P, de Monchenault GH, Jarry P, Locci E, Malcles J, Rander J, Rosowsky A, Titov M, Baffioni S, Beaudette F, Busson P, Charlot C, Dahms T, Dalchenko M, Dobrzynski L, Filipovic N, Florent A, de Cassagnac RG, Mastrolorenzo L, Mine P, Mironov C, Naranjo IN, Nguyen M, Ochando C, Paganini P, Regnard S, Salerno R, Sauvan JB, Sirois Y, Veelken C, Yilmaz Y, Zabi A, Agram JL, Andrea J, Aubin A, Bloch D, Brom JM, Chabert EC, Collard C, Conte E, Fontaine JC, Gele D, Goerlach U, Goetzmann C, Le Bihan AC, Van Hove P, Gadrat S, Beauceron S, Beaupere N, Boudoul G, Bouvier E, Brochet S, Montoya CAC, Chasserat J, Chierici R, Contardo D, Depasse P, El Mamouni H, Fan J, Fay J, Gascon S, Gouzevitch M, Ille B, Kurca T, Lethuillier M, Mirabito L, Perries S, Alvarez JDR, Sabes D, Sgandurra L, Sordini V, Donckt MV, Verdier P, Viret S, Xiao H, Tsamalaidze Z, Autermann C, Beranek S, Bontenackels M, Edelhoff M, Feld L, Hindrichs O, Klein K, Ostapchuk A, Perieanu A, Raupach F, Sammet J, Schael S, Weber H, Wittmer B, Zhukov V, Ata M, Brodski M, Dietz-Laursonn E, Duchardt D, Erdmann M, Fischer R, Guth A, Hebbeker T, Heidemann C, Hoepfner K, Klingebiel D, Knutzen S, Kreuzer P, Merschmeyer M, Meyer A, Millet P, Olschewski M, Padeken K, Papacz P, Reithler H, Schmitz SA, Sonnenschein L, Teyssier D, Thuer S, Weber M, Cherepanov V, Erdogan Y, Flugge G, Geenen H, Geisler M, Ahmad WH, Heister A, Hoehle F, Kargoll B, Kress T, Kuessel Y, Kunsken A, Lingemann J, Nowack A, Nugent IM, Perchalla L, Pooth O, Stahl A, Asin I, Bartosik N, Behr J, Behrenhoff W, Behrens U, Bell AJ, Bergholz M, Bethani A, Borras K, Burgmeier A, Cakir A, Calligaris L, Campbell A, Choudhury S, Costanza F, Pardos CD, Dooling S, Dorland T, Eckerlin G, Eckstein D, Eichhorn T, Flucke G, Garcia JG, Geiser A, Gunnellini P, Hauk J, Hempel M, Horton D, Jung H, Kalogeropoulos A, Kasemann M, Katsas P, Kieseler J, Kleinwort C, Krucker D, Lange W, Leonard J, Lipka K, Lobanov A, Lohmann W, Lutz B, Mankel R, Marfin I, Melzer-Pellmann IA, Meyer AB, Mittag G, Mnich J, Mussgiller A, Naumann-Emme S, Nayak A, Novgorodova O, Ntomari E, Perrey H, Pitzl D, Placakyte R, Raspereza A, Cipriano PMR, Roland B, Ron E, Sahin MO, Salfeld-Nebgen J, Saxena P, Schmidt R, Schoerner-Sadenius T, Schroder M, Seitz C, Spannagel S, Trevino ADRV, Walsh R, Wissing C, Martin MA, Blobel V, Vignali MC, Draeger AR, Erfle J, Garutti E, Goebel K, Gorner M, Haller J, Hoffmann M, Hoing RS, Kirschenmann H, Klanner R, Kogler R, Lange J, Lapsien T, Lenz T, Marchesini I, Ott J, Peiffer T, Pietsch N, Poehlsen J, Poehlsen T, Rathjens D, Sander C, Schettler H, Schleper P, Schlieckau E, Schmidt A, Seidel M, Sola V, Stadie H, Steinbruck G, Troendle D, Usai E, Vanelderen L, Vanhoefer A, Barth C, Baus C, Berger J, Boser C, Butz E, Chwalek T, De Boer W, Descroix A, Dierlamm A, Feindt M, Frensch F, Giffels M, Hartmann F, Hauth T, Husemann U, Katkov I, Kornmayer A, Kuznetsova E, Pardo PL, Mozer MU, Muller T, Nurnberg A, Quast G, Rabbertz K, Ratnikov F, Rocker S, Simonis HJ, Stober FM, Ulrich R, Wagner-Kuhr J, Wayand S, Weiler T, Wolf R, Anagnostou G, Daskalakis G, Geralis T, Giakoumopoulou VA, Kyriakis A, Loukas D, Markou A, Markou C, Psallidas A, Topsis-Giotis I, Kesisoglou S, Panagiotou A, Saoulidou N, Stiliaris E, Aslanoglou X, Evangelou I, Flouris G, Foudas C, Kokkas P, Manthos N, Papadopoulos I, Paradas E, Bencze G, Hajdu C, Hidas P, Horvath D, Sikler F, Veszpremi V, Vesztergombi G, Zsigmond AJ, Beni N, Czellar S, Karancsi J, Molnar J, Palinkas J, Szillasi Z, Raics P, Trocsanyi ZL, Ujvari B, Swain SK, Beri SB, Bhatnagar V, Gupta R, Bhawandeep U, Kalsi AK, Kaur M, Kumar R, Mittal M, Nishu N, Singh JB, Kumar A, Kumar A, Ahuja S, Bhardwaj A, Choudhary BC, Kumar A, Malhotra S, Naimuddin M, Ranjan K, Sharma V, Banerjee S, Bhattacharya S, Chatterjee K, Dutta S, Gomber B, Jain S, Jain S, Khurana R, Modak A, Mukherjee S, Roy D, Sarkar S, Sharan M, Abdulsalam A, Dutta D, Kailas S, Kumar V, Mohanty AK, Pant LM, Shukla P, Topkar A, Aziz T, Banerjee S, Bhowmik S, Chatterjee RM, Dewanjee RK, Dugad S, Ganguly S, Ghosh S, Guchait M, Gurtu A, Kole G, Kumar S, Maity M, Majumder G, Mazumdar K, Mohanty GB, Parida B, Sudhakar K, Wickramage N, Bakhshiansohi H, Behnamian H, Etesami SM, Fahim A, Goldouzian R, Khakzad M, Najafabadi MM, Naseri M, Mehdiabadi SP, Hosseinabadi FR, Safarzadeh B, Zeinali M, Felcini M, Grunewald M, Abbrescia M, Barbone L, Calabria C, Chhibra SS, Colaleo A, Creanza D, De Filippis N, De Palma M, Fiore L, Iaselli G, Maggi G, Maggi M, My S, Nuzzo S, Pompili A, Pugliese G, Radogna R, Selvaggi G, Silvestris L, Singh G, Venditti R, Zito G, Abbiendi G, Benvenuti AC, Bonacorsi D, Braibant-Giacomelli S, Brigliadori L, Campanini R, Capiluppi P, Castro A, Cavallo R, Codispoti G, Cuffiani M, Dallavalle GM, Fabbri F, Fanfani A, Fasanella D, Giacomelli P, Grandi C, Guiducci L, Marcellini S, Masetti G, Montanari A, Navarria FL, Perrotta A, Primavera F, Rossi AM, Rovelli T, Siroli GP, Tosi N, Travaglini R, Albergo S, Cappello G, Chiorboli M, Costa S, Giordano F, Potenza R, Tricomi A, Tuve C, Barbagli G, Ciulli V, Civinini C, D'Alessandro R, Focardi E, Gallo E, Gonzi S, Gori V, Lenzi P, Meschini M, Paoletti S, Sguazzoni G, Tropiano A, Benussi L, Bianco S, Fabbri F, Piccolo D, Ferretti R, Ferro F, Lo Vetere M, Robutti E, Tosi S, Dinardo ME, Fiorendi S, Gennai S, Gerosa R, Ghezzi A, Govoni P, Lucchini MT, Malvezzi S, Manzoni RA, Martelli A, Marzocchi B, Menasce D, Moroni L, Paganoni M, Pedrini D, Ragazzi S, Redaelli N, de Fatis TT, Buontempo S, Cavallo N, Di Guida S, Fabozzi F, Iorio AOM, Lista L, Meola S, Merola M, Paolucci P, Azzi P, Bacchetta N, Bellato M, Biasotto M, Branca A, Carlin R, Checchia P, Dall'Osso M, Dorigo T, Fanzago F, Galanti M, Gasparini F, Gasparini U, Giubilato P, Gozzelino A, Kanishchev K, Lacaprara S, Margoni M, Meneguzzo AT, Pazzini J, Pozzobon N, Ronchese P, Simonetto F, Torassa E, Tosi M, Zotto P, Zucchetta A, Gabusi M, Ratti SP, Re V, Riccardi C, Salvini P, Vitulo P, Biasini M, Bilei GM, Ciangottini D, Fano L, Lariccia P, Mantovani G, Menichelli M, Romeo F, Saha A, Santocchia A, Spiezia A, Androsov K, Azzurri P, Bagliesi G, Bernardini J, Boccali T, Broccolo G, Castaldi R, Ciocci MA, Dell'Orso R, Donato S, Fiori F, Foa L, Giassi A, Grippo MT, Ligabue F, Lomtadze T, Martini L, Messineo A, Moon CS, Palla F, Rizzi A, Savoy-Navarro A, Serban AT, Spagnolo P, Squillacioti P, Tenchini R, Tonelli G, Venturi A, Verdini PG, Vernieri C, Barone L, Cavallari F, D'imperio G, Del Re D, Diemoz M, Grassi M, Jorda C, Longo E, Margaroli F, Meridiani P, Micheli F, Nourbakhsh S, Organtini G, Paramatti R, Rahatlou S, Rovelli C, Santanastasio F, Soffi L, Traczyk P, Amapane N, Arcidiacono R, Argiro S, Arneodo M, Bellan R, Biino C, Cartiglia N, Casasso S, Costa M, Degano A, Demaria N, Finco L, Mariotti C, Maselli S, Migliore E, Monaco V, Musich M, Obertino MM, Ortona G, Pacher L, Pastrone N, Pelliccioni M, PinnaAngioni GL, Potenza A, Romero A, Ruspa M, Sacchi R, Solano A, Staiano A, Tamponi U, Belforte S, Candelise V, Casarsa M, Cossutti F, Della Ricca G, Gobbo B, La Licata C, Marone M, Schizzi A, Umer T, Zanetti A, Chang S, Kropivnitskaya A, Nam SK, Kim DH, Kim GN, Kim MS, Kong DJ, Lee S, Oh YD, Park H, Sakharov A, Son DC, Kim TJ, Kim JY, Song S, Choi S, Gyun D, Hong B, Jo M, Kim H, Kim Y, Lee B, Lee KS, Park SK, Roh Y, Choi M, Kim JH, Park IC, Ryu G, Ryu MS, Choi Y, Choi YK, Goh J, Kim D, Kwon E, Lee J, Seo H, Yu I, Juodagalvis A, Komaragiri JR, Ali MABM, Castilla-Valdez H, De La Cruz-Burelo E, Heredia-de La Cruz I, Hernandez-Almada A, Lopez-Fernandez R, Sanchez-Hernandez A, Moreno SC, Valencia FV, Pedraza I, Ibarguen HAS, Linares EC, Pineda AM, Krofcheck D, Butler PH, Reucroft S, Ahmad A, Ahmad M, Hassan Q, Hoorani HR, Khalid S, Khan WA, Khurshid T, Shah MA, Shoaib M, Bialkowska H, Bluj M, Boimska B, Frueboes T, Gorski M, Kazana M, Nawrocki K, Romanowska-Rybinska K, Szleper M, Zalewski P, Brona G, Bunkowski K, Cwiok M, Dominik W, Doroba K, Kalinowski A, Konecki M, Krolikowski J, Misiura M, Olszewski M, Wolszczak W, Bargassa P, Silva CBDE, Faccioli P, Parracho PGF, Gallinaro M, Iglesias LL, Nguyen F, Antunes JR, Seixas J, Varela J, Vischia P, Afanasiev S, Bunin P, Gavrilenko M, Golutvin I, Gorbunov I, Kamenev A, Karjavin V, Konoplyanikov V, Lanev A, Malakhov A, Matveev V, Moisenz P, Palichik V, Perelygin V, Shmatov S, Skatchkov N, Smirnov V, Zarubin A, Golovtsov V, Ivanov Y, Kim V, Levchenko P, Murzin V, Oreshkin V, Smirnov I, Sulimov V, Uvarov L, Vavilov S, Vorobyev A, Vorobyev A, Andreev Y, Dermenev A, Gninenko S, Golubev N, Kirsanov M, Krasnikov N, Pashenkov A, Tlisov D, Toropin A, Epshteyn V, Gavrilov V, Lychkovskaya N, Popov V, Safronov G, Semenov S, Spiridonov A, Stolin V, Vlasov E, Zhokin A, Andreev V, Azarkin M, Dremin I, Kirakosyan M, Leonidov A, Mesyats G, Rusakov SV, Vinogradov A, Belyaev A, Boos E, Ershov A, Gribushin A, Klyukhin V, Kodolova O, Korotkikh V, Lokhtin I, Obraztsov S, Petrushanko S, Savrin V, Snigirev A, Vardanyan I, Azhgirey I, Bayshev I, Bitioukov S, Kachanov V, Kalinin A, Konstantinov D, Krychkine V, Petrov V, Ryutin R, Sobol A, Tourtchanovitch L, Troshin S, Tyurin N, Uzunian A, Volkov A, Adzic P, Ekmedzic M, Milosevic J, Rekovic V, Maetre JA, Battilana C, Calvo E, Cerrada M, Llatas MC, Colino N, De La Cruz B, Peris AD, Vazquez DD, Del Valle AE, Bedoya CF, Ramos JPF, Flix J, Fouz MC, Garcia-Abia P, Lopez OG, Lopez SG, Hernandez JM, Josa MI, De Martino EN, Yzquierdo APC, Pelayo JP, Olmeda AQ, Redondo I, Romero L, Soares MS, Albajar C, de Troconiz JF, Missiroli M, Moran D, Brun H, Cuevas J, Menendez JF, Folgueras S, Caballero IG, Cifuentes JAB, Cabrillo IJ, Calderon A, Campderros JD, Fernandez M, Gomez G, Graziano A, Virto AL, Marco J, Marco R, Rivero CM, Matorras F, Sanchez FJM, Gomez JP, Rodrigo T, Rodriguez-Marrero AY, Ruiz-Jimeno A, Scodellaro L, Vila I, Cortabitarte RV, Abbaneo D, Auffray E, Auzinger G, Bachtis M, Baillon P, Ball AH, Barney D, Benaglia A, Bendavid J, Benhabib L, Benitez JF, Bernet C, Bianchi G, Bloch P, Bocci A, Bonato A, Bondu O, Botta C, Breuker H, Camporesi T, Cerminara G, Colafranceschi S, D'Alfonso M, d'Enterria D, Dabrowski A, David A, De Guio F, De Roeck A, De Visscher S, Di Marco E, Dobson M, Dordevic M, Dupont-Sagorin N, Elliott-Peisert A, Eugster J, Franzoni G, Funk W, Gigi D, Gill K, Giordano D, Girone M, Glege F, Guida R, Gundacker S, Guthoff M, Hammer J, Hansen M, Harris P, Hegeman J, Innocente V, Janot P, Kousouris K, Krajczar K, Lecoq P, Lourenco C, Magini N, Malgeri L, Mannelli M, Marrouche J, Masetti L, Meijers F, Mersi S, Meschi E, Moortgat F, Morovic S, Mulders M, Musella P, Orsini L, Pape L, Perez E, Perrozzi L, Petrilli A, Petrucciani G, Pfeiffer A, Pierini M, Pimia M, Piparo D, Plagge M, Racz A, Rolandi G, Rovere M, Sakulin H, Schafer C, Schwick C, Sharma A, Siegrist P, Silva P, Simon M, Sphicas P, Spiga D, Steggemann J, Stieger B, Stoye M, Takahashi Y, Treille D, Tsirou A, Veres GI, Vlimant JR, Wardle N, Wohri HK, Wollny H, Zeuner WD, Bertl W, Deiters K, Erdmann W, Horisberger R, Ingram Q, Kaestli HC, Kotlinski D, Langenegger U, Renker D, Rohe T, Bachmair F, Bani L, Bianchini L, Buchmann MA, Casal B, Chanon N, Dissertori G, Dittmar M, Donega M, Dunser M, Eller P, Grab C, Hits D, Hoss J, Lustermann W, Mangano B, Marini AC, del Arbol PMR, Masciovecchio M, Meister D, Mohr N, Nageli C, Nessi-Tedaldi F, Pandolfi F, Pauss F, Peruzzi M, Quittnat M, Rebane L, Rossini M, Starodumov A, Takahashi M, Theofilatos K, Wallny R, Weber HA, Amsler C, Canelli MF, Chiochia V, De Cosa A, Hinzmann A, Hreus T, Kilminster B, Lange C, Mejias BM, Ngadiuba J, Robmann P, Ronga FJ, Taroni S, Verzetti M, Yang Y, Cardaci M, Chen KH, Ferro C, Kuo CM, Lin W, Lu YJ, Volpe R, Yu SS, Chang P, Chang YH, Chang YW, Chao Y, Chen KF, Chen PH, Dietz C, Grundler U, Hou WS, Kao KY, Lei YJ, Liu YF, Lu RS, Majumder D, Petrakou E, Tzeng YM, Wilken R, Asavapibhop B, Srimanobhas N, Suwonjandee N, Adiguzel A, Bakirci MN, Cerci S, Dozen C, Dumanoglu I, Eskut E, Girgis S, Gokbulut G, Gurpinar E, Hos I, Kangal EE, Topaksu AK, Onengut G, Ozdemir K, Ozturk S, Polatoz A, Cerci DS, Tali B, Topakli H, Vergili M, Akin IV, Bilin B, Bilmis S, Gamsizkan H, Karapinar G, Ocalan K, Sekmen S, Surat UE, Yalvac M, Zeyrek M, Gulmez E, Isildak B, Kaya M, Kaya O, Cankocak K, Vardarli FI, Levchuk L, Sorokin P, Brooke JJ, Clement E, Cussans D, Flacher H, Frazier R, Goldstein J, Grimes M, Heath GP, Heath HF, Jacob J, Kreczko L, Lucas C, Meng Z, Newbold DM, Paramesvaran S, Poll A, Senkin S, Smith VJ, Williams T, Belyaev A, Brew C, Brown RM, Cockerill DJA, Coughlan JA, Harder K, Harper S, Olaiya E, Petyt D, Shepherd-Themistocleous CH, Thea A, Tomalin IR, Womersley WJ, Worm SD, Baber M, Bainbridge R, Buchmuller O, Burton D, Colling D, Cripps N, Cutajar M, Dauncey P, Davies G, Della Negra M, Dunne P, Ferguson W, Fulcher J, Futyan D, Gilbert A, Hall G, Iles G, Jarvis M, Karapostoli G, Kenzie M, Lane R, Lucas R, Lyons L, Magnan AM, Malik S, Mathias B, Nash J, Nikitenko A, Pela J, Pesaresi M, Petridis K, Raymond DM, Rogerson S, Rose A, Seez C, Sharp P, Tapper A, Acosta MV, Virdee T, Zenz SC, Cole JE, Hobson PR, Khan A, Kyberd P, Leggat D, Leslie D, Martin W, Reid ID, Symonds P, Teodorescu L, Turner M, Dittmann J, Hatakeyama K, Kasmi A, Liu H, Scarborough T, Charaf O, Cooper SI, Henderson C, Rumerio P, Avetisyan A, Bose T, Fantasia C, Lawson P, Richardson C, Rohlf J, St John J, Sulak L, Alimena J, Berry E, Bhattacharya S, Christopher G, Cutts D, Demiragli Z, Dhingra N, Ferapontov A, Garabedian A, Heintz U, Kukartsev G, Laird E, Landsberg G, Luk M, Narain M, Segala M, Sinthuprasith T, Speer T, Swanson J, Breedon R, Breto G, Sanchez MCD, Chauhan S, Chertok M, Conway J, Conway R, Cox PT, Erbacher R, Gardner M, Ko W, Lander R, Miceli T, Mulhearn M, Pellett D, Pilot J, Ricci-Tam F, Searle M, Shalhout S, Smith J, Squires M, Stolp D, Tripathi M, Wilbur S, Yohay R, Cousins R, Everaerts P, Farrell C, Hauser J, Ignatenko M, Rakness G, Takasugi E, Valuev V, Weber M, Burt K, Clare R, Ellison J, Gary JW, Hanson G, Heilman J, Rikova MI, Jandir P, Kennedy E, Lacroix F, Long OR, Luthra A, Malberti M, Nguyen H, Negrete MO, Shrinivas A, Sumowidagdo S, Wimpenny S, Andrews W, Branson JG, Cerati GB, Cittolin S, D'Agnolo RT, Evans D, Holzner A, Kelley R, Klein D, Lebourgeois M, Letts J, Macneill I, Olivito D, Padhi S, Palmer C, Pieri M, Sani M, Sharma V, Simon S, Sudano E, Tadel M, Tu Y, Vartak A, Welke C, Wurthwein F, Yagil A, Barge D, Bradmiller-Feld J, Campagnari C, Danielson T, Dishaw A, Flowers K, Sevilla MF, Geffert P, George C, Golf F, Gouskos L, Incandela J, Justus C, Mccoll N, Richman J, Stuart D, To W, West C, Yoo J, Apresyan A, Bornheim A, Bunn J, Chen Y, Duarte J, Mott A, Newman HB, Pena C, Rogan C, Spiropulu M, Timciuc V, Wilkinson R, Xie S, Zhu RY, Azzolini V, Calamba A, Carlson B, Ferguson T, Iiyama Y, Paulini M, Russ J, Vogel H, Vorobiev I, Cumalat JP, Ford WT, Gaz A, Lopez EL, Nauenberg U, Smith JG, Stenson K, Ulmer KA, Wagner SR, Alexander J, Chatterjee A, Chu J, Dittmer S, Eggert N, Mirman N, Kaufman GN, Patterson JR, Ryd A, Salvati E, Skinnari L, Sun W, Teo WD, Thom J, Thompson J, Tucker J, Weng Y, Winstrom L, Wittich P, Winn D, Abdullin S, Albrow M, Anderson J, Apollinari G, Bauerdick LAT, Beretvas A, Berryhill J, Bhat PC, Bolla G, Burkett K, Butler JN, Cheung HWK, Chlebana F, Cihangir S, Elvira VD, Fisk I, Freeman J, Gao Y, Gottschalk E, Gray L, Green D, Grunendahl S, Gutsche O, Hanlon J, Hare D, Harris RM, Hirschauer J, Hooberman B, Jindariani S, Johnson M, Joshi U, Kaadze K, Klima B, Kreis B, Kwan S, Linacre J, Lincoln D, Lipton R, Liu T, Lykken J, Maeshima K, Marraffino JM, Outschoorn VIM, Maruyama S, Mason D, McBride P, Merkel P, Mishra K, Mrenna S, Musienko Y, Nahn S, Newman-Holmes C, O'Dell V, Prokofyev O, Sexton-Kennedy E, Sharma S, Soha A, Spalding WJ, Spiegel L, Taylor L, Tkaczyk S, Tran NV, Uplegger L, Vaandering EW, Vidal R, Whitbeck A, Whitmore J, Yang F, Acosta D, Avery P, Bortignon P, Bourilkov D, Carver M, Cheng T, Curry D, Das S, De Gruttola M, Di Giovanni GP, Field RD, Fisher M, Furic IK, Hugon J, Konigsberg J, Korytov A, Kypreos T, Low JF, Matchev K, Milenovic P, Mitselmakher G, Muniz L, Rinkevicius A, Shchutska L, Snowball M, Sperka D, Yelton J, Zakaria M, Hewamanage S, Linn S, Markowitz P, Martinez G, Rodriguez JL, Adams T, Askew A, Bochenek J, Diamond B, Haas J, Hagopian S, Hagopian V, Johnson KF, Prosper H, Veeraraghavan V, Weinberg M, Baarmand MM, Hohlmann M, Kalakhety H, Yumiceva F, Adams MR, Apanasevich L, Bazterra VE, Berry D, Betts RR, Bucinskaite I, Cavanaugh R, Evdokimov O, Gauthier L, Gerber CE, Hofman DJ, Khalatyan S, Kurt P, Moon DH, O'Brien C, Silkworth C, Turner P, Varelas N, Albayrak EA, Bilki B, Clarida W, Dilsiz K, Duru F, Haytmyradov M, Merlo JP, Mermerkaya H, Mestvirishvili A, Moeller A, Nachtman J, Ogul H, Onel Y, Ozok F, Penzo A, Rahmat R, Sen S, Tan P, Tiras E, Wetzel J, Yetkin T, Yi K, Barnett BA, Blumenfeld B, Bolognesi S, Fehling D, Gritsan AV, Maksimovic P, Martin C, Swartz M, Baringer P, Bean A, Benelli G, Bruner C, Kenny RP, Malek M, Murray M, Noonan D, Sanders S, Sekaric J, Stringer R, Wang Q, Wood JS, Barfuss AF, Chakaberia I, Ivanov A, Khalil S, Makouski M, Maravin Y, Saini LK, Shrestha S, Skhirtladze N, Svintradze I, Gronberg J, Lange D, Rebassoo F, Wright D, Baden A, Belloni A, Calvert B, Eno SC, Gomez JA, Hadley NJ, Kellogg RG, Kolberg T, Lu Y, Marionneau M, Mignerey AC, Pedro K, Skuja A, Tonjes MB, Tonwar SC, Apyan A, Barbieri R, Bauer G, Busza W, Cali IA, Chan M, Di Matteo L, Dutta V, Ceballos GG, Goncharov M, Gulhan D, Klute M, Lai YS, Lee YJ, Levin A, Luckey PD, Ma T, Paus C, Ralph D, Roland C, Roland G, Stephans GSF, Stockli F, Sumorok K, Velicanu D, Veverka J, Wyslouch B, Yang M, Zanetti M, Zhukova V, Dahmes B, Gude A, Kao SC, Klapoetke K, Kubota Y, Mans J, Pastika N, Rusack R, Singovsky A, Tambe N, Turkewitz J, Acosta JG, Oliveros S, Avdeeva E, Bloom K, Bose S, Claes DR, Dominguez A, Suarez RG, Keller J, Knowlton D, Kravchenko I, Lazo-Flores J, Malik S, Meier F, Snow GR, Zvada M, Dolen J, Godshalk A, Iashvili I, Kharchilava A, Kumar A, Rappoccio S, Alverson G, Barberis E, Baumgartel D, Chasco M, Haley J, Massironi A, Morse DM, Nash D, Orimoto T, Trocino D, Wang RJ, Wood D, Zhang J, Hahn KA, Kubik A, Mucia N, Odell N, Pollack B, Pozdnyakov A, Schmitt M, Stoynev S, Sung K, Velasco M, Won S, Brinkerhoff A, Chan KM, Drozdetskiy A, Hildreth M, Jessop C, Karmgard DJ, Kellams N, Lannon K, Luo W, Lynch S, Marinelli N, Pearson T, Planer M, Ruchti R, Valls N, Wayne M, Wolf M, Woodard A, Antonelli L, Brinson J, Bylsma B, Durkin LS, Flowers S, Hill C, Hughes R, Kotov K, Ling TY, Puigh D, Rodenburg M, Smith G, Winer BL, Wolfe H, Wulsin HW, Driga O, Elmer P, Hebda P, Hunt A, Koay SA, Lujan P, Marlow D, Medvedeva T, Mooney M, Olsen J, Piroue P, Quan X, Saka H, Stickland D, Tully C, Werner JS, Zuranski A, Brownson E, Mendez H, Vargas JER, Barnes VE, Benedetti D, Bortoletto D, De Mattia M, Gutay L, Hu Z, Jha MK, Jones M, Jung K, Kress M, Leonardo N, Pegna DL, Maroussov V, Miller DH, Neumeister N, Radburn-Smith BC, Shi X, Shipsey I, Silvers D, Svyatkovskiy A, Wang F, Xie W, Xu L, Yoo HD, Zablocki J, Zheng Y, Parashar N, Stupak J, Adair A, Akgun B, Ecklund KM, Geurts FJM, Li W, Michlin B, Padley BP, Redjimi R, Roberts J, Zabel J, Betchart B, Bodek A, Covarelli R, de Barbaro P, Demina R, Eshaq Y, Ferbel T, Garcia-Bellido A, Goldenzweig P, Han J, Harel A, Khukhunaishvili A, Petrillo G, Vishnevskiy D, Ciesielski R, Demortier L, Goulianos K, Lungu G, Mesropian C, Arora S, Barker A, Chou JP, Contreras-Campana C, Contreras-Campana E, Duggan D, Ferencek D, Gershtein Y, Gray R, Halkiadakis E, Hidas D, Kaplan S, Lath A, Panwalkar S, Park M, Patel R, Salur S, Schnetzer S, Somalwar S, Stone R, Thomas S, Thomassen P, Walker M, Rose K, Spanier S, York A, Bouhali O, Hernandez AC, Eusebi R, Flanagan W, Gilmore J, Kamon T, Khotilovich V, Krutelyov V, Montalvo R, Osipenkov I, Pakhotin Y, Perloff A, Roe J, Rose A, Safonov A, Sakuma T, Suarez I, Tatarinov A, Akchurin N, Cowden C, Damgov J, Dragoiu C, Dudero PR, Faulkner J, Kovitanggoon K, Kunori S, Lee SW, Libeiro T, Volobouev I, Appelt E, Delannoy AG, Greene S, Gurrola A, Johns W, Maguire C, Mao Y, Melo A, Sharma M, Sheldon P, Snook B, Tuo S, Velkovska J, Arenton MW, Boutle S, Cox B, Francis B, Goodell J, Hirosky R, Ledovskoy A, Li H, Lin C, Neu C, Wood J, Clarke C, Harr R, Karchin PE, Don CKK, Lamichhane P, Sturdy J, Belknap DA, Carlsmith D, Cepeda M, Dasu S, Dodd L, Duric S, Friis E, Hall-Wilton R, Herndon M, Herve A, Klabbers P, Lanaro A, Lazaridis C, Levine A, Loveless R, Mohapatra A, Ojalvo I, Perry T, Pierro GA, Polese G, Ross I, Sarangi T, Savin A, Smith WH, Taylor D, Verwilligen P, Vuosalo C, Woods N
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Long-range two-particle correlations of strange hadrons with charged particles in pPb and PbPb collisions at LHC energies
PHYSICS LETTERS B 2015 MAR 6; 742(?):200-224
Measurements of two-particle angular correlations between an identified strange hadron (K-S(0) or A/(A) over bar) and a charged particle, emitted in pPb collisions, are presented over a wide range in pseudorapidity and full azimuth. The data, corresponding to an integrated luminosity of approximately 35 nb(-1), were collected at a nucleon-nucleon center-of-mass energy (root s(NN)) of 5.02 TeV with the CMS detector at the LHC. The results are compared to semi-peripheral PbPb collision data at root s(NN) = 2.76 TeV, covering similar charged-particle multiplicities in the events. The observed azimuthal correlations at large relative pseudorapidity are used to extract the second-order (v(2)) and third-order (v(3)) anisotropy harmonics of K-S(0) and A/(A) over bar particles. These quantities are studied as a function of the charged-particle multiplicity in the event and the transverse momentum of the particles. For high-multiplicity pPb events, a clear particle species dependence of v(2) and v(3) is observed. For p(T) < 2 GeV, the v(2) and v(3) values of K-S(0) particles are larger than those of A/(A) over bar particles at the same p(T). This splitting effect between two particle species is found to be stronger in pPb than in PbPb collisions in the same multiplicity range. When divided by the number of constituent quarks and compared at the same transverse kinetic energy per quark, both v(2) and v(3) for K-S(0) particles are observed to be consistent with those for A/(A) over bar particles at the 10% level in pPb collisions. This consistency extends over a wide range of particle transverse kinetic energy and event multiplicities. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
Haley SJ, Kreek MJ
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A Window of Opportunity: Maximizing the Effectiveness of New HCV Regimens in the United States With the Expansion of the Affordable Care Act
AMERICAN JOURNAL OF PUBLIC HEALTH 2015 MAR; 105(3):457-463
Patients with chronic HCV have predictable overlapping comorbidities that reduce access to care. The Affordable Care Act (ACA) presents an opportunity to focus on the benefits of the medical home model for integrated chronic disease management. New, highly effective HCV treatment regimens in combination with the medical home model could reduce disease prevalence. We sought to address challenges posed by comorbidities in patients with chronic HCV infection and limitations within our health care system, and recommend solutions to maximize the public benefit from ACA and the new drug regimen.
Dobenecker MW, Kim JK, Marcello J, Fang TC, Prinjha R, Bosselut R, Tarakhovsky A
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Coupling of T cell receptor specificity to natural killer T cell development by bivalent histone H3 methylation
JOURNAL OF EXPERIMENTAL MEDICINE 2015 MAR; 212(3):297-306
The fidelity of T cell immunity depends greatly on coupling T cell receptor signaling with specific T cell effector functions. Here, we describe a chromatin-based mechanism that enables integration of TCR specificity into definite T cell lineage commitment. Using natural killer T cells (iNKT cell) as a model of a T cell subset that differentiates in response to specific TCR signaling, we identified a key role of histone H3 lysine 27 trimethylation (H3K27me3) in coupling iNKT cell TCR specificity with the generation of iNKT cells. We found that the Zbtb16/PLZF gene promoter that drives iNKT cell differentiation possesses a bivalent chromatin state characterized by the simultaneous presence of negative and positive H3K27me3 and H3K4me3 modifications. Depletion of H3K27me3 at the Zbtb16/PLZF promoter leads to uncoupling of iNKT cell development from TCR specificity and is associated with accumulation of iNKT-like CD4(+) cells that express a non-iNKT cell specific T cell repertoire. In turn, stabilization of H3K27me3 leads to a drastic reduction of the iNKT cell population. Our data suggest that H3K27me3 levels at the bivalent Zbtb16/PLZF gene define a threshold enabling precise coupling of TCR specificity to lineage commitment.
Borst O, Schaub M, Walker B, Schmid E, Munzer P, Voelkl J, Alesutan I, Rodriguez JM, Vogel S, Schoenberger T, Metzger K, Rath D, Umbach A, Kuhl D, Muller II, Seizer P, Geisler T, Gawaz M, Lang F
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Pivotal Role of Serum- and Glucocorticoid-Inducible Kinase 1 in Vascular Inflammation and Atherogenesis
ARTERIOSCLEROSIS THROMBOSIS AND VASCULAR BIOLOGY 2015 MAR; 35(3):547-557
Objective Atherosclerosis, an inflammatory disease of arterial vessel walls, requires migration and matrix metalloproteinase (MMP)-9-dependent invasion of monocytes/macrophages into the vascular wall. MMP-9 expression is stimulated by transcription factor nuclear factor-B, which is regulated by inhibitor B (IB) and thus IB kinase. Regulators of nuclear factor-B include serum- and glucocorticoid-inducible kinase 1 (SGK1). The present study explored involvement of SGK1 in vascular inflammation and atherogenesis. Approach and Results Gene-targeted apolipoprotein E (ApoE)-deficient mice without (apoe(-/-)sgk1(+/+)) or with (apoe(-/-)sgk1(-/-)) additional SGK1 knockout received 16-week cholesterol-rich diet. According to immunohistochemistry atherosclerotic lesions in aorta and carotid artery, vascular CD45(+) leukocyte infiltration, Mac-3(+) macrophage infiltration, vascular smooth muscle cell content, MMP-2, and MMP-9 positive areas in atherosclerotic tissue were significantly less in apoe(-/-)sgk1(-/-)mice than in apoe(-/-)sgk1(+/+)mice. As determined by Boyden chamber, thioglycollate-induced peritonitis and air pouch model, migration of SGK1-deficient CD11b(+)F4/80(+) macrophages was significantly diminished in vitro and in vivo. Zymographic MMP-2 and MMP-9 production, MMP-9 activity and invasion through matrigel in vitro were significantly less in sgk1(-/-) than in sgk1(+/+)macrophages and in control plasmid-transfected or inactive (K127N)SGK1-transfected than in constitutively active (S422D)SGK1-transfected THP-1 cells. Confocal microscopy revealed reduced macrophage number and macrophage MMP-9 content in plaques of apoe(-/-)sgk1(-/-) mice. In THP-1 cells, MMP-inhibitor GM6001 (25 mol/L) abrogated (S422D)SGK1-induced MMP-9 production and invasion. According to reverse transcription polymerase chain reaction, MMP-9 transcript levels were significantly reduced in sgk1(-/-)macrophages and strongly upregulated in (S422D)SGK1-transfected THP-1 cells compared with control plasmid-transfected or (K127N)SGK1-transfected THP-1 cells. According to immunoblotting and confocal microscopy, phosphorylation of IB kinase and inhibitor B and nuclear translocation of p50 were significantly lower in sgk1(-/-)macrophages than in sgk1(+/+)macrophages and significantly higher in (S422D)SGK1-transfected THP-1 cells than in control plasmid-transfected or (K127N)SGK1-transfected THP-1 cells. Treatment of (S422D)SGK1-transfected THP-1 cells with IB kinase-inhibitor BMS-345541 (10 mol/L) abolished (S422D)SGK1-induced increase of MMP-9 transcription and gelatinase activity. Conclusions SGK1 plays a pivotal role in vascular inflammation during atherogenesis. SGK1 participates in the regulation of monocyte/macrophage migration and MMP-9 transcription via regulation of nuclear factor-B.
Lord CL, Timney BL, Rout MP, Wente SR
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Altering nuclear pore complex function impacts longevity and mitochondrial function in S. cerevisiae
JOURNAL OF CELL BIOLOGY 2015 MAR 16; 208(6):729-744
The eukaryotic nuclear permeability barrier and selective nucleocytoplasmic transport are maintained by nuclear pore complexes (NPCs), large structures composed of. 30 proteins (nucleoporins [Nups]). NPC structure and function are disrupted in aged nondividing metazoan cells, although it is unclear whether these changes are a cause or consequence of aging. Using the replicative life span (RLS) of Saccharomyces cerevisiae as a model, we find that specific Nups and transport events regulate longevity independent of changes in NPC permeability. Mutants lacking the GLFG domain of Nup116 displayed decreased RLSs, whereas longevity was increased in nup100-null mutants. We show that Nup116 mediates nuclear import of the karyopherin Kap121, and each protein is required for mitochondrial function. Both Kap121-dependent transport and Nup116 levels decrease in replicatively aged yeast. Overexpression of GSP1, the small GTPase that powers karyopherin-mediated transport, rescued mitochondrial and RLS defects in nup116 mutants and increased longevity in wild-type cells. Together, these studies reveal that specific NPC nuclear transport events directly influence aging.
Uematsu K, Heiman M, Zelenina M, Padovan J, Chait BT, Aperia A, Nishi A, Greengard P
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Protein kinase A directly phosphorylates metabotropic glutamate receptor 5 to modulate its function
JOURNAL OF NEUROCHEMISTRY 2015 MAR; 132(6):677-686
Metabotropic glutamate receptor 5 (mGluR5) regulates excitatory post-synaptic signaling in the central nervous system (CNS) and is implicated in various CNS disorders. Protein kinase A (PKA) signaling is known to play a critical role in neuropsychiatric disorders such as Parkinson's disease, schizophrenia, and addiction. Dopamine signaling is known to modulate the properties of mGluR5 in a cAMP-and PKA-dependent manner, suggesting that mGluR5 may be a direct target for PKA. Our study identifies mGluR5 at Ser870 as a direct substrate for PKA phosphorylation and demonstrates that this phosphorylation plays a critical role in the PKA-mediated modulation of mGluR5 functions such as extracellular signal-regulated kinase phosphorylation and intracellular Ca2+ oscillations. The identification of the molecular mechanism by which PKA signaling modulates mGluR5-mediated cellular responses contributes to the understanding of the interaction between dopaminergic and glutamatergic neuronal signaling.
Marques-Lopes J, Lynch MK, Van Kempen TA, Waters EM, Wang G, Iadecola C, Pickel VM, Milner TA
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Female Protection From Slow-Pressor Effects of Angiotensin II Involves Prevention of ROS Production Independent of NMDA Receptor Trafficking in Hypothalamic Neurons Expressing Angiotensin 1A Receptors
SYNAPSE 2015 MAR; 69(3):148-165
Renin-angiotensin system overactivity, upregulation of postsynaptic NMDA receptor function, and increased reactive oxygen species (ROS) production in the hypothalamic paraventricular nucleus (PVN) are hallmarks of angiotensin II (AngII)-induced hypertension, which is far more common in young males than in young females. We hypothesize that the sex differences in hypertension are related to differential AngII-induced changes in postsynaptic trafficking of the essential NMDA receptor GluN1 subunit and ROS production in PVN cells expressing angiotensin Type 1a receptor (AT1aR). We tested this hypothesis using slow-pressor (14-day) infusion of AngII (600 ng/kg/min) in mice, which elicits hypertension in males but not in young females. Two-month-old male and female transgenic mice expressing enhanced green fluorescent protein (EGFP) in AT1aR-containing cells were used. In males, but not in females, AngII increased blood pressure and ROS production in AT1aR-EGFP PVN cells at baseline and following NMDA treatment. Electron microscopy showed that AngII increased cytoplasmic and total GluN1-silver-intensified immunogold (SIG) densities and induced a trend toward an increase in near plasmalemmal GluN1-SIG density in AT1aR-EGFP dendrites of males and females. Moreover, AngII decreased dendritic area and diameter in males, but increased dendritic area of small (<1 mu m) dendrites and decreased diameter of large (>1 mu m) dendrites in females. Fluorescence microscopy revealed that AT1aR and estrogen receptor do not colocalize, suggesting that if estrogen is involved, its effect is indirect. These data suggest that the sexual dimorphism in AngII-induced hypertension is associated with sex differences in ROS production in AT1aR-containing PVN cells but not with postsynaptic NMDA receptor trafficking. Synapse 69:148-165, 2015. (c) 2015 Wiley Periodicals, Inc.