Abstract
Following infection with Human immunodeficiency virus 1 (HIV-1) there is a remarkable variation in virus replication and disease progression. Both host and viral factors have been implicated in the observed differences in disease status. Here, we focus on understanding the contribution of HIV-1 viral protein R (Vpr) by evaluating the disease-associated Vpr polymorphism and its biological functions from HIV-1 positive rapid progressor (RP) and long-term nonprogressor (LTNP) subjects. Results presented here show distinct variation in phenotypes of Vpr alleles from LTNP and RP subjects. Most notably, the polymorphism of Vpr at R36W and L68M associated with RP shows higher levels of oligomerization, and increased virus replication, whereas R77Q exhibits poor replication kinetics. Interestingly, we did not observe correlation with cell cycle arrest function. Together these results indicate that polymorphisms in Vpr in part may contribute to altered virus replication kinetics leading to the observed differences in disease progression in LTNP and RP groups.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 700-711 |
| Number of pages | 12 |
| Journal | Journal of General Virology |
| Volume | 95 |
| Issue number | PART3 |
| DOIs | |
| State | Published - Mar 1 2014 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Virology
Cite this
Human immunodeficiency virus type 1 Vpr polymorphisms associated with progressor and nonprogressor individuals alter Vpr-associated functions. / Hadi, Kevin; Walker, Leah A.; Guha, Debjani; Murali, Ramachandran; Watkins, Simon C.; Tarwater, Patrick; Srinivasan, Alagarsamy; Ayyavoo, Velpandi.
In: Journal of General Virology, Vol. 95, No. PART3, 01.03.2014, p. 700-711.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Human immunodeficiency virus type 1 Vpr polymorphisms associated with progressor and nonprogressor individuals alter Vpr-associated functions
AU - Hadi, Kevin
AU - Walker, Leah A.
AU - Guha, Debjani
AU - Murali, Ramachandran
AU - Watkins, Simon C.
AU - Tarwater, Patrick
AU - Srinivasan, Alagarsamy
AU - Ayyavoo, Velpandi
PY - 2014/3/1
Y1 - 2014/3/1
N2 - Following infection with Human immunodeficiency virus 1 (HIV-1) there is a remarkable variation in virus replication and disease progression. Both host and viral factors have been implicated in the observed differences in disease status. Here, we focus on understanding the contribution of HIV-1 viral protein R (Vpr) by evaluating the disease-associated Vpr polymorphism and its biological functions from HIV-1 positive rapid progressor (RP) and long-term nonprogressor (LTNP) subjects. Results presented here show distinct variation in phenotypes of Vpr alleles from LTNP and RP subjects. Most notably, the polymorphism of Vpr at R36W and L68M associated with RP shows higher levels of oligomerization, and increased virus replication, whereas R77Q exhibits poor replication kinetics. Interestingly, we did not observe correlation with cell cycle arrest function. Together these results indicate that polymorphisms in Vpr in part may contribute to altered virus replication kinetics leading to the observed differences in disease progression in LTNP and RP groups.
AB - Following infection with Human immunodeficiency virus 1 (HIV-1) there is a remarkable variation in virus replication and disease progression. Both host and viral factors have been implicated in the observed differences in disease status. Here, we focus on understanding the contribution of HIV-1 viral protein R (Vpr) by evaluating the disease-associated Vpr polymorphism and its biological functions from HIV-1 positive rapid progressor (RP) and long-term nonprogressor (LTNP) subjects. Results presented here show distinct variation in phenotypes of Vpr alleles from LTNP and RP subjects. Most notably, the polymorphism of Vpr at R36W and L68M associated with RP shows higher levels of oligomerization, and increased virus replication, whereas R77Q exhibits poor replication kinetics. Interestingly, we did not observe correlation with cell cycle arrest function. Together these results indicate that polymorphisms in Vpr in part may contribute to altered virus replication kinetics leading to the observed differences in disease progression in LTNP and RP groups.
UR - http://www.scopus.com/inward/record.url?scp=84894066091&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84894066091&partnerID=8YFLogxK
U2 - 10.1099/vir.0.059576-0
DO - 10.1099/vir.0.059576-0
M3 - Article
C2 - 24300552
AN - SCOPUS:84894066091
VL - 95
SP - 700
EP - 711
JO - Journal of General Virology
JF - Journal of General Virology
SN - 0022-1317
IS - PART3
ER -