Cutting Edge: In Vivo Induction of Integrated HIV-1 Expression by Mycobacteria Is Critically Dependent on Toll-Like Receptor 2 1
Cutting Edge: In Vivo Induction of Integrated HIV-1 Expression by Mycobacteria Is Critically Dependent on Toll-Like Receptor 2 1
复制标题
最前沿:分枝杆菌在体内诱导整合 HIV-1 表达严重依赖于 Toll 样受体 2 1
作者:
A. Báfica;C. Scanga;M. Schito;S. Hieny;A. Sher
Mycobacterial infection has been implicated as a possible factor in AIDS progression in populations where HIV-1 and Mycobacterium tuberculosis are coendemic. In support of this concept, we have previously shown that HIV-1-transgenic (Tg) mice infected with mycobacteria display enhanced viral gene and protein expression. In this study, we demonstrate that the induction of HIV-1 observed in this model is dependent on Toll-like receptor 2 (TLR2), a pattern recognition receptor known to be involved in mycobacteria-host interaction. Spleen cells from HIV-1-Tg mice deficient in TLR2 (Tg/TLR2−/−) were found to be completely defective in p24 production induced in response to live M. tuberculosis or Mycobacterium avium as well as certain mycobacterial products. Importantly, following in vivo mycobacterial infection, Tg/TLR2−/− mice failed to display the enhanced HIV-1 gag/env mRNA and p24 protein synthesis exhibited by wild-type Tg animals. Together, these results argue that TLR2 plays a crucial role in the activation of HIV-1 expression by mycobacterial coinfections.
登录
查看更多内容
DOI:
10.1073/pnas.96.25.14459
发表时间:
1999-12-07
影响因子:
11.1
作者:
Underhill, DM;Ozinsky, A;Aderem, A
通讯作者:
Aderem, A
影响因子:
4.4
作者:
T. Means;Shuyan Wang;E. Lien;A. Yoshimura;D. Golenbock;M. Fenton
通讯作者:
T. Means;Shuyan Wang;E. Lien;A. Yoshimura;D. Golenbock;M. Fenton
DOI:
--
发表时间:
1996
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Goletti,D;Weissman,D;Jackson,RW;Graham,NM;Vlahov,D;Klein,RS;Munsiff,SS;Ortona,L;Cauda,R;Fauci,AS
通讯作者:
Fauci,AS
影响因子:
2.2
作者:
Collins,KalonjiR;Quinones-Mateu,MiguelE;Toossi,Zahra;Arts,EricJ
通讯作者:
Arts,EricJ
DOI:
10.1086/320716
发表时间:
2001
期刊:
The Journal of infectious diseases
影响因子:
--
作者:
Schito,ML;Kennedy,PE;Kowal,RP;Berger,EA;Sher,A
通讯作者:
Sher,A