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Expansion of inefficient HIV-specific CD8 T cells during acute infection
Eller M.A. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Expansion of inefficient HIV-specific CD8 T cells during acute infection
ผู้แต่ง / หัวหน้าโครงการ (EN): Eller M.A.
บทคัดย่อ (EN): Attrition within the CD4 + T cell compartment, high viremia, and a cytokine storm characterize the early days after HIV infection. When the first emerging HIV-specific CD8 + T cell responses gain control over viral replication it is incomplete, and clearance of HIV infection is not achieved even in the rare cases of individuals who spontaneously control viral replication to nearly immeasurably low levels. Thus, despite their partial ability to control viremia, HIV-specific CD8 + T cell responses are insufficient to clear HIV infection. Studying individuals in the first few days of acute HIV infection, we detected the emergence of a unique population of CD38 + CD27 - CD8 + T cells characterized by the low expression of the CD8 receptor (CD8 dim ). Interestingly, while high frequencies of HIV-specific CD8 + T cell responses occur within the CD38 + CD27 - CD8 dim T cell population, the minority populations of CD8 bright T cells are significantly more effective in inhibiting HIV replication. Furthermore, the frequency of CD8 dim T cells directly correlates with viral load and clinical predictors of more rapid disease progression. We found that a canonical burst of proliferative cytokines coincides with the emergence of CD8 dim T cells, and the size of this population inversely correlates with the acute loss of CD4 + T cells. These data indicate, for the first time, that early CD4 + T cell loss coincides with the expansion of a functionally impaired HIV-specific CD8 dim T cell population less efficient in controlling HIV viremia. © 2016, American Society for Microbiology.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://www.scopus.com/inward/record.uri?eid=2-s2.0-84963864427&doi=10.1128%2fJVI.02785-15&partnerID=40&md5=f75c4e4afb140e8a4c2fff26692d2531
เผยแพร่โดย (EN): มหาวิทยาลัยมหิดล
คำสำคัญ (EN): Young Adult
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยมหิดล
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Expansion of inefficient HIV-specific CD8 T cells during acute infection
Eller M.A.
มหาวิทยาลัยมหิดล
ไม่ระบุวันที่เผยแพร่
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