Is the high virulence of HIV-1 an unfortunate coincidence of primate lentiviral evolution?
Is the high virulence of HIV-1 an unfortunate coincidence of primate lentiviral evolution?
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HIV-1的高毒力是否是灵长类慢病毒进化的不幸巧合?
DOI:
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发表时间:
2009
影响因子:
88.1
通讯作者:
F. Kirchhoff
中科院分区:
文献类型:
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作者:
F. Kirchhoff
In the subset of primate lentiviruses that contain a vpu gene — HIV-1 and its simian precursors — the Nef protein has lost the ability to down-modulate CD3, block T cell activation and suppress programmed death. Vpu counteracts a host restriction factor induced by the inflammatory cytokine interferon-α. I propose that the acquisition of vpu may have allowed the viral lineage that gave rise to HIV-1 to evolve towards greater pathogenicity by removing the selective pressure for a protective Nef function that prevents damagingly high levels of immune activation.
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