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The genome and proteins of HIV (human immunodeficiency virus) have been the subject of extensive research since the discovery of the virus in 1983. [1] [2] "In the search for the causative agent, it was initially believed that the virus was a form of the Human T-cell leukemia virus (HTLV), which was known at the time to affect the human immune system and cause certain leukemias.
DCs are one of the first cells encountered by the virus during sexual transmission. They are currently thought to play an important role by transmitting HIV to T cells when the virus is captured in the mucosa by DCs. [62] The presence of FEZ-1, which occurs naturally in neurons, is believed to prevent the infection of cells by HIV. [63]
A good CD8 + T cell response has been linked to slower disease progression and a better prognosis, though it does not eliminate the virus. [102] Ultimately, HIV causes AIDS by depleting CD4 + T cells. This weakens the immune system and allows opportunistic infections. T cells are essential to the immune response and without them, the body ...
A good CD8 + T cell response has been linked to slower disease progression and a better prognosis, though it does not eliminate the virus. [3] During the acute phase, HIV-induced cell lysis and killing of infected cells by cytotoxic T cells accounts for CD4 + T cell depletion, although apoptosis may also be a factor.
Lentivirus is a genus of retroviruses that cause chronic and deadly diseases characterized by long incubation periods, in humans and other mammalian species. [2] The genus includes the human immunodeficiency virus (HIV), which causes AIDS.
HIV-1 is the most common and most pathogenic strain of the virus. As of 2022, approximately 1.3 million such infections occur annually. [4] [5] Scientists divide HIV-1 into a major group (group M) and two or more minor groups, namely groups N, O and possibly a group P.
Mitotic cell division enables sexually reproducing organisms to develop from the one-celled zygote, which itself is produced by fusion of two gametes, each having been produced by meiotic cell division. [5] [6] After growth from the zygote to the adult, cell division by mitosis allows for continual construction and repair of the organism. [7]
First is the 3’ processing of the HIV DNA, followed by strand transfer of the HIV DNA into the host DNA. The integration of HIV DNA can occur either in dividing or resting cells, and the HIV integrase enzyme can exist in the form of a monomer, dimer, tetramer, and possibly even higher-order forms (such as octomers). Each HIV particle has an ...
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