Journal of the American Heart Association
Authors: Yano Y, Ning H, Reis JP, Lewis CE, Launer LJ, Bryan RN, Yaffe K, Sidney S, Albanese E, Greenland P, Lloyd-Jones D, Liu K
Volume 19 of Issue 1 | Cell host & microbe
Authors: Srivastava S, Grace PS, Ernst JD
Persistence of Mycobacterium tuberculosis results from bacterial strategies that manipulate host adaptive immune responses. Infected dendritic cells (DCs) transport M. tuberculosis to local lymph nodes but activate CD4 T cells poorly, suggesting bacterial manipulation of antigen presentation. However, M. tuberculosis antigens are also exported from infected DCs and taken up and presented by uninfected DCs, possibly overcoming this blockade of antigen presentation by infected cells. Here we show that the first stage of this antigen transfer, antigen export, benefits M. tuberculosis by diverting bacterial proteins from the antigen presentation pathway. Kinesin-2 is required for antigen export and depletion of this microtubule-based motor increases activation of antigen-specific CD4 T cells by infected cells and improves control of intracellular infection. Thus, although antigen transfer enables presentation by bystander cells, it does not compensate for reduced antigen presentation by infected cells and represents a bacterial strategy for CD4 T cell evasion.
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Clinical infectious diseases : an official publication of the Infectious Diseases Society of America
Authors: Fox GJ, Mitnick CD, Benedetti A, Chan ED, Becerra M, Chiang CY, Keshavjee S, Koh WJ, Shiraishi Y, Viiklepp P, Yim JJ, Pasvol G, Robert J, Shim TS, Shin SS, Menzies D, Ahuja S, Ashkin D, Avendaño M, Banerjee R, Bauer M, Burgos M, Centis R, Cobelens F, Cox H, D'Ambrosio L, de Lange WCM, DeRiemer K, Enarson D, Falzon D, Flanagan K, Flood J, Gandhi N, Garcia-Garcia L, Granich RM, Hollm-Delgado MG, Holtz TH, Hopewell P, Iseman M, Jarlsberg LG, Kim HR, Lancaster J, Lange C, Leimane V, Leung CC, Li J, Menzies D, Migliori GB, Narita M, Nathanson E, Odendaal R, O'Riordan P, Pai M, Palmero D, Park SK, Pena J, Pérez-Guzmán C, Ponce-de-Leon A, Quelapio MID, Quy HT, Riekstina V, Royce S, Salim M, Schaaf HS, Seung KJ, Shah L, Shean K, Sifuentes-Osornio J, Sotgiu G, Strand MJ, Sung SW, Tabarsi P, Tupasi TE, Vargas MH, van Altena R, van der Walt M, van der Werf TS, Westenhouse J, Yew WW
Annals of internal medicine
Authors: Miglioretti DL, Lange J, van den Broek JJ, Lee CI, van Ravesteyn NT, Ritley D, Kerlikowske K, Fenton JJ, Melnikow J, de Koning HJ, Hubbard RA
Annals of internal medicine
Authors: Mandelblatt JS, Stout NK, Schechter CB, van den Broek JJ, Miglioretti DL, Krapcho M, Trentham-Dietz A, Munoz D, Lee SJ, Berry DA, van Ravesteyn NT, Alagoz O, Kerlikowske K, Tosteson AN, Near AM, Hoeffken A, Chang Y, Heijnsdijk EA, Chisholm G, Huang X, Huang H, Ergun MA, Gangnon R, Sprague BL, Plevritis S, Feuer E, de Koning HJ, Cronin KA
