Identification of a New HIV-1 Circulating Recombinant Form
CRF112_01B Strain in Baoding City, Hebei Province, China

Hao      Wang; Xuanhe      Zhao; Miaomiao      Su; Juan      Meng; Weiguang      Fan; Penghui      Shi

doi:10.2174/1570162X21666221027122528

Abstract

Background: A large number of HIV-1 recombinants that originated from CRF01_AE and B strains are constantly emerging in men who have sex with men populations in China and deserve more attention and further monitoring.

Objective: To analyze the near-full-length genome structure and recombination characteristics of a new HIV-1 strain (BD226AJ) detected in Baoding City and determine its subtype.

Case Representation: Viral RNA was extracted from a blood sample collected from an infected individual and reverse transcribed to cDNA. Two overlapping segments of the HIV-1 genome were amplified using a near-endpoint dilution method and sequenced. Recombinant breakpoints were determined using RIP, jpHMM, and SimPlot 3.5.1 software. MEGA v6.0 was used to construct a neighbor-joining phylogenetic tree to determine the homology relationships of this strain.

Results and Discussion: We obtained 8830 nucleotides (nt) of the HIV-1 genome sequence by amplification and sequencing, and four recombinant fragments were identified by recombination analysis, namely CRF01_AE (HXB2, 823–4224 nt), subtype B (HXB2, 4225–5991 nt), CRF01_AE (HXB2, 5992–9295 nt), and subtype B (HXB2, 9296–9406 nt). The BLAST results showed that 96% of the sequence was similar to CRF112_01B. The jpHMM results confirmed that BD226AJ was the CRF112_01B strain.

Conclusion: Our results confirm the first epidemic of CRF112_01B in Hebei Province. This finding suggests that HIV-1 CRF112_01B may have been introduced into Hebei by men who have sex with men and indicates that the epidemic trend of this strain should be closely monitored.

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DOI https://dx.doi.org/10.2174/1570162X21666221027122528	Print ISSN 1570-162X
Publisher Name Bentham Science Publisher	Online ISSN 1873-4251

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Identification of a New HIV-1 Circulating Recombinant Form CRF112_01B Strain in Baoding City, Hebei Province, China

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