B and T Lymphocyte Attenuator Down-regulation by HIV-1 Depends on Type I Interferon and Contributes to T-Cell Hyperactivation
نویسندگان
چکیده
منابع مشابه
B and T lymphocyte attenuator down-regulation by HIV-1 depends on type I interferon and contributes to T-cell hyperactivation.
BACKGROUND Nonspecific T-cell hyperactivation is the main driving force for human immunodeficiency virus (HIV)-1 disease progression, but the reasons why the excess immune response is not properly shut off are poorly defined. METHODS Eighty-five HIV-1-infected individuals were enrolled to characterize B and T lymphocyte attenuator (BTLA) expression and function. Infection and blockade assays ...
متن کاملB and T Lymphocyte Attenuator is a Target of miR-155 during Naive CD4+ T Cell Activation
Background: MicroRNA-155 (miR-155) is upregulated during T cell activation, but the exact mechanisms by which it influences CD4+ T cell activation remain unclear. Objective: To examine whether the B and T lymphocyte attenuator (BTLA) is a target of miR-155 during naïve CD4+ T cell activation. Methods: Firefly luciferase reporter plasmids pEZX-MT01-wild-type-BTLA and pEZX-MT01-mutant-BTLA were ...
متن کاملType I interferon contributes to CD4+ T cell depletion induced by infection with HIV-1 in the human thymus.
Persistent induction of type 1 interferon (IFN) is associated with human immunodeficiency virus type 1 (HIV-1) infection. We report here that the pathogenic HIV strain R3A (HIV-R3A) induced high levels of type 1 IFN, while the nonpathogenic HIV-R3B showed no significant induction in human fetal thymus organ culture (HFTOC). We found that IFN contributed to the depletion of human T cells by HIV-...
متن کاملB and T lymphocyte attenuator regulates B cell receptor signaling by targeting Syk and BLNK.
B and T lymphocyte attenuator (BTLA) functions as a negative regulator of T cell activation and proliferation. Although the role of BTLA in regulating T cell responses has been characterized, a thorough investigation into the precise molecular mechanisms involved in BTLA-mediated lymphocyte attenuation and, more specifically, its role in regulating B cell activation has not been presented. In t...
متن کاملt-helper cell type-1 transcription factor t-bet is down-regulated in type 1 diabetes
t cells have been identified as key players in the pathogenesis of type 1 diabetes. however, the exact role of t-cell subpopulations in this pathway is presently unknown. the purpose of this study was to assess the expression pattern of two lineage-specifying transcription factors gata - 3 and t - bet , which are important in t helper type 1 (th1) and th2 cell development , respectively. gene e...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Infectious Diseases
سال: 2011
ISSN: 1537-6613,0022-1899
DOI: 10.1093/infdis/jir165