Genetic diversity in L1 ORF of human papillomavirus in women with cervical cancer with and without human immunodeficiency virus in Botswana and Kenya

Leabaneng Tawe, Wonderful T. Choga, Giacomo M. Paganotti, Ontlametse T. Bareng, Tlhalefo D. Ntereke, Pleasure Ramatlho, Doreen Ditshwanelo, Simani Gaseitsiwe, Ishmael Kasvosve, Doreen Ramogola-Masire, Omenge E. Orang’o, Erle Robertson, Nicola Zetola, Sikhulile Moyo, Surbhi Grover, Aaron C. Ermel

Research output: Contribution to journalArticlepeer-review

Abstract

Background: The variation of human papillomavirus (HPV) genotypes shapes the risks of cervical cancer and these variations are not well defined in Africa. Nucleotide changes within the L1 gene, nucleotide variability, and phylogeny were explored in relation to HIV in samples from Botswana and Kenya. Methods: A total of 98 HPV-positive cervical samples were sequenced to identify different HPV variants. Phylogenetic inferences were used to determine HPV genotypes and investigate the clustering of sequences between women living with HIV (WLWHIV) and -women not living with HIV (WNLWHIV). Results: Out of 98 generated sequences, 83.7% (82/98) participants had high-risk (HR) HPV genotypes while 16.3% (16/98) had low-risk (LR) HPV genotypes. Among participants with HR-HPV genotypes, 47.6% (39/82) were coinfected with HIV. The prevalence of HR-HPV genotypes was statistically higher in the Botswana population compared to Kenya (p-value < 0.001). Multiple amino acid mutations were identified in both countries. Genetic diversity differed considerably among WLWHIV and WNLWHIV. The mean pairwise distances between HPV-16 between HIV and HIV/HPV as well as for HPV-18 were statistically significant. Six (6) new deleterious mutations were identified in the HPV genotypes based on the sequencing of the L1 region, HPV-16 (L441P, S343P), HPV-18 (S424P), HPV-45 (Q366H, Y365F), and HPV-84 (F458L). The majority of the patients with these mutations were co-infected with HIV. Conclusions: Genomic diversity and different genomic variants of HPV sequences were demonstrated. Candidate novel mutations within the L1 gene were identified in both countries which can be further investigated using functional assays.

Original languageEnglish (US)
Article number95
JournalBMC Infectious Diseases
Volume22
Issue number1
DOIs
StatePublished - Dec 2022
Externally publishedYes

Keywords

  • Botswana
  • Cervical cancer
  • HIV
  • HIV co-infection
  • HPV variants phylogenetic analysis
  • Human papillomavirus
  • Kenya
  • L1 gene

ASJC Scopus subject areas

  • Infectious Diseases

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