Publications des scientifiques de l'IRD

Nouhin J., Donchai Tawee, Khanh T. H. H., Ken S., Kamkorn Jiraporn, Ton T., Ayouba Ahidjo, Peeters Martine, Chaix M. L., Truong X. L., Nerrienet E., Ngo-Giang-Huong Nicole. (2011). Natural polymorphisms of HIV-1 CRF01_AE integrase coding region in ARV-naive individuals in Cambodia, Thailand and Vietnam : an ANRS AC12 working group study. Infection Genetics and Evolution, 11 (1), p. 38-43. ISSN 1567-1348.

Titre du document
Natural polymorphisms of HIV-1 CRF01_AE integrase coding region in ARV-naive individuals in Cambodia, Thailand and Vietnam : an ANRS AC12 working group study
Année de publication
2011
Type de document
Article référencé dans le Web of Science WOS:000286558800006
Auteurs
Nouhin J., Donchai Tawee, Khanh T. H. H., Ken S., Kamkorn Jiraporn, Ton T., Ayouba Ahidjo, Peeters Martine, Chaix M. L., Truong X. L., Nerrienet E., Ngo-Giang-Huong Nicole
Source
Infection Genetics and Evolution, 2011, 11 (1), p. 38-43 ISSN 1567-1348
The HIV integrase enzyme is essential for the HIV life cycle as it mediates integration of HIV-1 proviral DNA into the infected cell's genome. Recently, the development of drugs capable of inhibiting integrase has provided major new options for HIV-infected, treatment-experienced patients with multidrug resistant virus, as well treatment-naive patients. More than 40 amino acid substitutions within integrase have been described as associated mostly with resistance of HIV B-subtypes to currently available integrase inhibitors (INIs). We have analyzed the natural polymorphisms of the integrase coding region in 87 anti retroviral-naive subjects (32 from Cambodia, 37 from Thailand and 18 from Vietnam) infected with CRF01_AE virus, the predominant HIV-1 strain circulating in Southeast Asia. The 864 bp integrase coding region was sequenced using the ANRS consensus sequencing technique from plasma samples, and amino acid results were interpreted for drug resistance according to the ANRS (Updated July 2009, version 18) and Stanford algorithms (Version November 6, 2009). Alignment of the 87 amino acid sequences against the 2004 Los Alamos HIV-1 clade B consensus sequence showed that overall, 119 of 288 (41.3%) amino acid positions presented at least one polymorphism each. Substitutions found in >60% of study subjects occurred at: K14, A21, V31, S39,172, T112, T124, T125, G134, 1135, K136, D167, V201, L234 and S283. Also, new amino acid substitutions of as yet unknown significance were identified: E152K/H, S153F/L, N1551 and E157G. None of the known integrase resistance mutations were observed, except E157Q found in one Cambodian subject (1.1%, CI 95% 0.02-6.3%). The clinical impact of this substitution on resistance of B and nonB-viruses to the licensed INI raltegravir is unclear. If this substitution is confirmed to compromise the virologic response to raltegravir, further studies will be needed to better assess the prevalence of this substitution among CRF01_AE virus.
Plan de classement
Entomologie médicale / Parasitologie / Virologie [052]
Localisation
Fonds IRD [F B010053092]
Identifiant IRD
fdi:010053092
Contact