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. 1994 Jun;68(6):4080–4085. doi: 10.1128/jvi.68.6.4080-4085.1994

Persistence of simian immunodeficiency virus Mne variants upon transmission.

B Chackerian 1, W R Morton 1, J Overbaugh 1
PMCID: PMC236922  PMID: 8189548

Abstract

In macaques infected with a clone of simian immunodeficiency virus (SIV) Mne, viral variants consistently evolve multiple new potential glycosylation sites in the first variable region (V1) prior to the development of AIDS. In the present study, we asked whether viruses with these glycosylation sites persist when they are transmitted to a naive macaque. Variants that evolved after transmission to a recipient macaque were compared with virus that evolved in the donor, which had been infected by cloned SIV Mne. Upon transmission, the specific serine/threonine-rich motifs potentially encoding novel O-linked glycosylation site(s) in V1 were conserved in virus isolated from lymph node, spleen, and liver tissue from the recipient. There was some accumulation of changes in V3 of envelope in virus from the recipient, whereas changes in this region were not observed in virus from the donor macaque. Some variants detected in the tissue of the recipient at necropsy were most closely related to viruses present in the donor inoculum even though these particular variants were not detected early after infection in the recipient's peripheral blood mononuclear cells. Overall, virus with the predominant V1 sequences associated with progression to disease are transmitted to and persist in the recipient animal.

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Selected References

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