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CD8+ cell depletion accelerates HIV-1 immunopathology in humanized mice.


ABSTRACT: Stable engraftment of human lymphoid tissue in NOD/scid-IL-2Rgammacnull mice after CD34+ hematopoietic stem cell reconstitution permits the evaluation of ongoing HIV-1 infection for weeks to months. We demonstrate that HIV-1-infected rodents develop virus-specific cellular immune responses. CD8+ cell depletion, 2 or 5-7 wk after viral infection, resulted in a significant increase of HIV-1 load, robust immune cell activation, and cytopathology in lymphoid tissues but preserved CD4/CD8 double-positive thymic T cell pools. Human CD8+ cells reappeared in circulation as early as 2-3 wk. These data support a role of CD8+ cells in viral surveillance and the relevance of this humanized mouse model for the studies of HIV-1 pathobiology and virus-specific immunity.

SUBMITTER: Gorantla S 

PROVIDER: S-EPMC3008566 | biostudies-literature | 2010 Jun

REPOSITORIES: biostudies-literature

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CD8+ cell depletion accelerates HIV-1 immunopathology in humanized mice.

Gorantla Santhi S   Makarov Edward E   Finke-Dwyer Jennifer J   Gebhart Catherine L CL   Domm William W   Dewhurst Stephen S   Gendelman Howard E HE   Poluektova Larisa Y LY  

Journal of immunology (Baltimore, Md. : 1950) 20100521 12


Stable engraftment of human lymphoid tissue in NOD/scid-IL-2Rgammacnull mice after CD34+ hematopoietic stem cell reconstitution permits the evaluation of ongoing HIV-1 infection for weeks to months. We demonstrate that HIV-1-infected rodents develop virus-specific cellular immune responses. CD8+ cell depletion, 2 or 5-7 wk after viral infection, resulted in a significant increase of HIV-1 load, robust immune cell activation, and cytopathology in lymphoid tissues but preserved CD4/CD8 double-posi  ...[more]

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