IJCRR - 7(5), March, 2015
Pages: 24-29
ANALYSIS OF VIRAL PROTEIN U VARIANT AT AMINO ACID POSITION 61 AMONG THE HETEROSEXUALLY TRANSMITTED HIV-1 PATIENTS OF MANIPUR
Author: Adhikarimayum Lakhikumar Sharma, Thiyam Ramsing Singh, Khuraijam Ranjana Devi, Lisam Shanjukumar Singh
Category: Healthcare
[Download PDF]
Abstract:
Background: Mutation at amino acid position 61 of vpu influences the stability, release and toxicity of the HIV-1. Previously, we have reported that the seryl residue 61 of HIV-1 was mostly conserved among the HIV-1 infected Intravenous Drug Users (IDUs) of Manipur. In this study, we further analyzed the site mutagenesis at seryl residue 61 among the heterosexually transmitted HIV-1 infected individuals of Manipur.
Methodology: Heterosexually transmitted HIV-1 infected blood samples from forty eight individuals have been studied by viral amplification and sequencing at vpu gene of HIV-1. Translated amino acid sequences were aligned with reference strain of HIV- 1 for analysis of amino acid variation at position number 61. Phylogenetic tree were also interfered among the studied sample.
Results: The results revealed that 91.67% of heterosexually transmitted HIV-1 infected individuals were harboring virus with conserved seryl residue 61 which has viral-enhancement function while only 8.33% harbored mutated virus. Phylogenetic tree of the vpu sequences among the heterosexually transmitted HIV-1 infected individuals of Manipur displayed multiple clusters.
Conclusions: Among the heterosexually transmitted HIV-1 infected individuals of Manipur, vpu is highly conserved at amino nacid position 61 with serine (wild-type) which predicts virus to be more virulent. The analysis also indicated that the heterosexually transmitted virus was possibly introduced from multiple sources. The understanding developed on HIV-1 pathogenicity will provide vital information for the policy makers and clinicians for sentinel surveillance of this pandemic and may help the vaccine/ drug developers to design effective anti-HIV-1 therapeutic agents to fight back the deadly AIDS pandemic.
Keywords: HIV, Heterosexual, vpu, Manipur, AIDS, India
Citation:
Adhikarimayum Lakhikumar Sharma, Thiyam Ramsing Singh, Khuraijam Ranjana Devi, Lisam Shanjukumar Singh. ANALYSIS OF VIRAL PROTEIN U VARIANT AT AMINO ACID POSITION 61 AMONG THE HETEROSEXUALLY TRANSMITTED HIV-1 PATIENTS OF MANIPUR International Journal of Current Research and Review. 7(5), March, 24-29
References:
1. Simones EA BP, John TJ, Nirmala S, Solomon S , et al. Evidence for HTLV-III infection in prostitutes in Tamil Nadu (India). Indian J Med Res. 1987;85:335-8.
2. (MACS) MACS. Annual Report. 2008.
3. United Nation Office on Drugs and Crime (UNODC). South East Asia Survey 2013. 2013.
4. Eicher AD, Crofts N, Benjamin S, Deutschmann P, Rodger AJ. A certain fate: spread of HIV among young injecting drug users in Manipur, north-east India. AIDS Care. 2000;12(4):497-504.
5. Chandrasekaran P, Dallabetta G, Loo V, Rao S, Gayle H, Alexander A. Containing HIV/AIDS in India: the unfinished agenda. Lancet Infect Dis. 2006;6(8):508-21.
6. Kermode M, Longleng V, Singh BC, Hocking J, Langkham B, Crofts N. My first time: initiation into injecting drug use in Manipur and Nagaland, north-east India. Harm Reduct J. 2007;4:19.
7. About AIDS in Manipur. national informatics centre, porompat 795005, http://imphaleastnicin/aidshomehtm#a.
8. Chris Beyrer MHR, Khomdon Lisam, Jei Chen, Wei Lui and Xiao-Fang yu. Overland heroin traficking routes and HIV-1 spread in south and south east asia. AIDS 2000. 1999;14:75-83.
9. National AIDS Control Society (NACO) DoACMoHFW, Government of India. Annual Report 2013-2014. 2014.
10. Cullen BR, Greene WC. Functions of the auxiliary gene products of the human immunodeficiency virus type 1. Virology. 1990;178(1):1-5.
11. Cohen EA, Terwilliger EF, Sodroski JG, Haseltine WA. Identification of a protein encoded by the vpu gene of HIV-1. Nature. 1988;334(6182):532-4.
12. Matsuda Z, Chou MJ, Matsuda M, Huang JH, Chen YM, Redfield R, et al. Human immunodeficiency virus type 1 has an additional coding sequence in the central region of the genome. Proc Natl Acad Sci U S A. 1988;85(18):6968- 72.
13. Nomaguchi M, Doi N, Fujiwara S, Fujita M, Adachi A. SiteDirected Mutagenesis of HIV-1 vpu Gene Demonstrates Two Clusters of Replication-Defective Mutants with Distinct Ability to Down-Modulate Cell Surface CD4 and Tetherin. Front Microbiol. 2010;1:116.
14. Estrabaud E, Le Rouzic E, Lopez-Verges S, Morel M, Belaidouni N, Benarous R, et al. Regulated degradation of the HIV-1 Vpu protein through a betaTrCP-independent pathway limits the release of viral particles. PLoS Pathog. 2007;3(7):e104.
15. De Candia C, Espada C, Duette G, Salomon H, Carobene M. Human immunodeficiency virus-1 BF intersubtype recombinant viral protein U second alpha helix plays an important role in viral release and BST-2 degradation. J Gen Virol. 2013;94(Pt 4):758-66.
16. Verma S, Ronsard L, Kapoor R, Banerjea AC. Genetic characterization of natural variants of Vpu from HIV-1 infected individuals from Northern India and their impact on virus release and cell death. PLoS One. 2013;8(3):e59283.
17. Sharma AL Singh TR, Machathoibi TC, Singh S D, Devi KR and Singh LS. Genetic study of vpu variant among the HIV-1 infected intravenous drug users of Manipur predicts highly pathogenic virus. IIJSR. 2014;vol 1(no.2):106-12.
18. Nadai Y, Eyzaguirre LM, Constantine NT, Sill AM, Cleghorn F, Blattner WA, et al. Protocol for nearly full-length sequencing of HIV-1 RNA from plasma. PLoS One. 2008;3(1):e1420.
19. Sibnarayan Datta AB, Partha K. chandra, pradip K. Mahapatra, Shekhar Charabarti and Runu Chakravarty.Drug Trafficking Routes and Hepatitis B in Injecting Drug users, Manipur, india. Emerging Infectitious Disease. 2006;12(12):1954-7.
20. Strebel K, Klimkait T, Martin MA. A novel gene of HIV-1, vpu, and its 16-kilodalton product. Science. 1988;241(4870):1221-3.
|