Gene expression profiling of p53 and c-myc in HTLV-1 positive blood donors in Congo
- Authors: Iloukou P.J.1,2, Boumba A.L.2,3, Pouki F.S.2, Massengo N.R.2, Takale R.P.2, Moukassa D.2, Ennaji M.M.1
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Affiliations:
- Hassan II University of Casablanca
- Marien N’gouabi University
- National institute for Research in Health Sciences (IRSSA)
- Issue: Vol 69, No 2 (2024)
- Pages: 127-133
- Section: ORIGINAL RESEARCH
- URL: https://journal-vniispk.ru/0507-4088/article/view/256874
- DOI: https://doi.org/10.36233/0507-4088-199
- EDN: https://elibrary.ru/jysjfr
- ID: 256874
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Abstract
Objectives. The HTLV-1 infection persists for life, remaining as asymptomatic viral reservoirs in most patients, ensuring the chain of transmission, but around 4% develop adult T-cell leukemia/lymphoma (ATLL). HTLV-1 is an oncogenic retrovirus that transforms CD4+ T lymphocytes and deregulates the lymphoproliferative pathways that contribute to the development of ATLL. To achieve cell transformation, most oncogenic retroviruses use proto-oncogene capture transduction, with proviral integration disrupting the expression of tumor suppressors or proto-oncogenes.
The aim. We conducted this study on the prevalence of HTLV-1 infection in blood donors to expand the HTLV-1 database, assess the risk of transmission via blood products, as well as evaluate the risk of persistent infection or development of neoplastic diseases in HTLV-1 carriers.
Materials and methods. This is a cross-sectional study of blood donors of all categories. For this study, 265 blood donors were recruited at the Centre National de Transfusion Sanguine in Brazzaville. After testing for HTLV-1 antibodies by ELISA, proviral DNA was extracted from all ELISA-positive samples for detection by nested PCR, followed by RT qPCR using specific primers p53 and c-myc for gene expression.
Results. 20/265 were positive for anti-HTLV-1 antibody, 5 donors were positive for proviral DNA. The prevalence of HTLV-1 was 1.8%. All HTLV-1-positive donors were male (1.8%), with a positive correlation (p = 0.05); the 1.1% of positive donors were regular, with the majority aged between 31 and 45 years (1.5%), and concubine donors were the most frequent (1.1%). All samples showed normal expression of the p53 and c-myc genes.
Conclusion. The prevalence, though low, remains a serious problem. No abnormal p53 or c-myc gene expression was detected in HTLV-1-positive donors, which could mean that none of the T lymphocytes in these donors had been transformed by HTLV-1.
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##article.viewOnOriginalSite##About the authors
Patrina Joseph Iloukou
Hassan II University of Casablanca; Marien N’gouabi University
Email: Josephiloukou1@gmail.com
ORCID iD: 0000-0002-5505-2145
M.Sc, Doctorante, Laboratory of Virology, Oncology, Biosciences, Environment and New Energy, Faculty of Science and Technology, Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco, Department of Health and Human Biology, Faculty of Health Sciences, Marien N’gouabi University, Av. des Premiers Jeux Africains
Morocco, Casablanca POBOX 146 Mohammedia 20650; Brazzaville, CongoAnicet L.M. Boumba
Marien N’gouabi University; National institute for Research in Health Sciences (IRSSA)
Email: anicetboumba1974@gmail.com
ORCID iD: 0000-0001-7675-5133
M.Sc, PhD, Full professor, Director of the Health Sciences Research Zone, Pointe-Noire research zone, National Institute for Research in Health Sciences (IRSSA), 26, Avenue du Havre Zone Industrielle Route BI, Brazzaville, Congo. Teacher, Department of Health and Human Biology, Faculty of Health Sciences, Marien N’gouabi University, Av. des Premiers Jeux Africains
Congo, the Democratic Republic of the, Brazzaville; Brazzaville Pointe-Noire Research Zone
Freddy S. Pouki
Marien N’gouabi University
Email: poukifreddy@gmail.com
ORCID iD: 0009-0007-4838-2270
M.Sc, Doctorant, Department of Health and Human Biology, Faculty of Health Sciences, Av. des Premiers Jeux Africains
Congo, the Democratic Republic of the, BrazzavilleNorvi R. B. Massengo
Marien N’gouabi University
Email: bienvenumassengo@gmal.com
ORCID iD: 0009-0000-9474-7989
M.Sc, Doctorant, Department of Health and Human Biology, Faculty of Health Sciences, Av. des Premiers Jeux Africains
Congo, the Democratic Republic of the, BrazzavilleRagive P. Takale
Marien N’gouabi University
Email: ragivetakale@gmail.com
ORCID iD: 0009-0009-5402-9013
M.Sc, Doctorant, Department of Health and Human Biology, Faculty of Health Sciences, Av. des Premiers Jeux Africains
Congo, the Democratic Republic of the, BrazzavilleDonatien Moukassa
Marien N’gouabi University
Email: donatienmoukassa@gmail.com
ORCID iD: 0000-0001-6764-7122
M.Sc, PhD, Full professor, Head of Health and Human Biology Department, Faculty of Health Sciences, Av. des Premiers Jeux Africains
Congo, the Democratic Republic of the, BrazzavilleMoulay M. Ennaji
Hassan II University of Casablanca
Author for correspondence.
Email: m.ennaji@yahoo.fr
ORCID iD: 0000-0001-5809-0270
M.Sc, PhD, Full professor, Research group leader virology, oncology and biotechnology-Head of Laboratory of Virology, Oncology, Biosciences, Environment and New Energy, Faculty of Science and Technology, Mohammedia
Morocco, CasablancaReferences
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