1
|
Djataou P, Djuidje Ngounoue M, Nkenfou-Tchinda CN, Ngoufack MN, Elong E, Tiga A, Muluh C, Kadji Kameni J, Djaouda M, Ndjolo A, Nkenfou CN. Low prevalence of HIV in the northern Cameroon: contribution of some AIDS restriction genes and potential implications for gene therapy. Front Genet 2024; 15:1447971. [PMID: 39346778 PMCID: PMC11427317 DOI: 10.3389/fgene.2024.1447971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Accepted: 08/22/2024] [Indexed: 10/01/2024] Open
Abstract
Background HIV infection and its progression to AIDS depend on several factors including host genetic factors. The immunological mechanisms of host resistance to HIV infection greatly influence the prevalence of HIV in a given region. Worldwide, Cameroon not exempted, the frequency of AIDS-associated genes varies and may influence this prevalence. The North and Far North Regions of Cameroon have had the lowest HIV prevalence in the country for many years despite risky behaviors associated with their customs and habits. In this work, we seek to explore the contribution of host genes to the HIV low prevalence in these regions. Methodology Five genes variants previously described as HIV AIDS related were studied. These genes are: CCR5Δ32, CCR5promoter59029G, CCR2-64I, SDF1-3'A and Trim5α(R136Q). A total of 384 consented participants were included in this study. The HIV serological status was confirmed using national algorithm. Genomic DNA was extracted from the buffy coats and used for genotyping. The results obtained were compiled in Excel 2016, Epi Info 7.1 and snpStats software and Chi two tests allowed us to compare the frequencies of the AIDS related alleles in the North with those in other Regions of Cameroon and to measure the impact of these ARGs on protection against HIV. Results The frequency of protective alleles CCR5Δ32, CCR5promoter59029G, CCR2-64I, SDF1-3'A and Trim5α(R136Q) was the allelic frequencies should be expressed as percentages i.e. 0.52%; 37.56%; 36.46%; 25.19% and 69.33%. These allelic frequencies exhibited a significant difference when compared to those obtained in other regions of Cameroon (p < 0.01). Protective alleles were predominant in the Northern region compared to others and were associated with resistance to HIV [(p < 0.0001); OR = 2.02 CI, 95%]. Conclusion The higher frequency of HIV-protective alleles in the northern regions may be a contributing factor to the lower prevalence of HIV. Nevertheless, this should be reinforced by other preventive and surveillance methods to guarantee the sustained low prevalence. HIV can develop resistance through the process of mutation, but the host targets themselves are genetically stable. The study of these host genetic restriction factors is of great value in the design of a practical cure for HIV infection or an effective vaccine.
Collapse
Affiliation(s)
- Patrice Djataou
- Chantal BIYA International Reference Center (CBIRC), Yaounde, Cameroon
- Department of Biochemistry, Faculty of Science, University of Yaounde I, Yaounde, Cameroon
| | | | - Carine Nguefeu Nkenfou-Tchinda
- Department of Biochemistry, Faculty of Medicine and Pharmaceutical Sciences of Sangmelima, Ebolowa University, Sangmelima, Cameroon
| | | | - Elise Elong
- Chantal BIYA International Reference Center (CBIRC), Yaounde, Cameroon
| | - Aline Tiga
- Chantal BIYA International Reference Center (CBIRC), Yaounde, Cameroon
| | | | | | - Moussa Djaouda
- Department of Life and Earth Sciences, University of Maroua, Maroua, Cameroon
| | - Alexis Ndjolo
- Chantal BIYA International Reference Center (CBIRC), Yaounde, Cameroon
| | - Celine Nguefeu Nkenfou
- Chantal BIYA International Reference Center (CBIRC), Yaounde, Cameroon
- Department of Biological Sciences, Higher Teachers Training College, Yaounde, Cameroon
| |
Collapse
|
2
|
Santana DS, Silva MJA, de Marin ABR, Costa VLDS, Sousa GSM, de Sousa JG, Silva DC, da Cruz EC, Lima LNGC. The Influence Between C-C Chemokine Receptor 5 Genetic Polymorphisms and the Type-1 Human Immunodeficiency Virus: A 20-Year Review. AIDS Res Hum Retroviruses 2023; 39:13-32. [PMID: 36226448 PMCID: PMC9889015 DOI: 10.1089/aid.2022.0111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Acquired immune deficiency syndrome (AIDS) is an infectious disease caused by the types 1 and 2 human immunodeficiency virus (HIV-1 and HIV-2). Clinical outcomes in patients are highly varied and delineated by complex interactions between virus, host, and environment, such as with help of co-receptors, for example, the C-C chemokine receptor 5 (CCR5). This work aimed to describe the scientific evidence relating the influence of CCR5 polymorphisms in association studies for HIV-1 disease susceptibility, severity, and transmissibility. This is a systematic review of the literature on single nucleotide polymorphisms (SNPs) and the deletion [Insertion and Deletion (Indel)] Δ32 of CCR5. The search for articles was based on the ScienceDirect, PubMed, and Coordination for the Improvement of Higher Education Personnel (CAPES) databases for the period between 2001 and 2021. The final sample consisted of 32 articles. †SNP rs1799987 is one of the genetic polymorphisms most associated with the criteria of susceptibility and severity of HIV-1, having distinct consequences in genotypic, allelic, and clinical analysis in the variability of investigated populations. As for the transmission character of the disease, the G mutant allele of rs1799987 corresponds to the highest positive association. ‡Furthermore, the results on Indel Δ32 corroborate the absence and rarity of this variant in some populations. Finally, mitigating the severity of cases, SNPs rs1799988 and rs1800023 obtained significant attribution in individuals in the studied populations. It is shown that the reported polymorphisms express significant influences for the evaluation of diagnostic, therapeutic, and prophylactic measures for HIV-1 having fundamental particularities in the molecular, genetic, and transcriptional aspects of CCR5.
Collapse
Affiliation(s)
- Davi Silva Santana
- Institute of Health Sciences (ICS), Federal University of Pará (UFPA), Belém, Brazil
| | - Marcos Jessé Abrahão Silva
- Bacteriology and Mycology Section, Evandro Chagas Institute (IEC), Ananindeua, Brazil.,Address correspondence to: Marcos Jessé Abrahão Silva, Bacteriology and Mycology Section, Evandro Chagas Institute (IEC), Ananindeua, Brazil
| | | | | | | | | | - Dihago Cardoso Silva
- Institute of Health Sciences (ICS), Federal University of Pará (UFPA), Belém, Brazil
| | - Eliete Costa da Cruz
- Institute of Health Sciences (ICS), Federal University of Pará (UFPA), Belém, Brazil
| | | |
Collapse
|
3
|
Analysis of the CCR2-64I (rs1799864) genetic polymorphism distribution and its effect on the risk of HIV-1 infection and immunovirological outcomes in Moroccan ART-treated individuals. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100715] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
4
|
Ngoufack MN, Nkenfou CN, Atogho Tiedeu B, Mouafo LCM, Dambaya B, Ndzi EN, Kouanfack C, Nguefack-Tsague G, Mbacham WF, Ndjolo A. CCR2 Genetic Polymorphism And Its Potential Effect On HIV Acquisition In A Population Of Children Living In The Northern Region Of Cameroon. APPLICATION OF CLINICAL GENETICS 2019; 12:229-234. [PMID: 31819589 PMCID: PMC6886552 DOI: 10.2147/tacg.s202498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 03/28/2019] [Indexed: 11/26/2022]
Abstract
Background and objectives The association of chemokine receptor-2 (CCR2) polymorphism with HIV transmission or disease progression remains highly controversial. The role of CCR2-64I allele in HIV infection may differ from one population to another because of their genetic background. The objectives of this study were to characterize the CCR2 genetic polymorphism and to determine its potential effect in HIV acquisition in children living in the Northern Region of Cameroon. Materials and methods A cross-sectional study was carried out in five health facilities in the Northern region of Cameroon. DNA was extracted from the Buffy coat of each participant using the QIAamp®DNA mini kit. The DNA extract was then subjected to polymorphic analyses. CCR2 genotypes were analyzed by polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP). The Chi-Squared test was used for the assessment of the Hardy-Weinberg equilibrium. Results A total of 134 children under 15 years comprised of 38 HIV-exposed infected (28.36%) and 96 HIV-exposed un-infected (71.64%) participants were recruited. Prevalences of 44.78% wild type homozygous, 48.52% heterozygous and 6.7% mutant homozygous alleles were found in the overall population. An allelic frequency of 29.69% for the mutant allele CCR2-64I was found in HIV-exposed un-infected individuals as compared to 34.21% in HIV-infected children (p=0.47). Conclusion The CCR2-64I allele is relatively common in the Northern Region of Cameroon, with a similar distribution among HIV-exposed un-infected and infected children. As this allele alone does not seem to confer protection against HIV-1 infection, further studies using genotype-combination of CCR2 polymorphism and other single nucleotide polymorphisms would be of great relevance in both HIV prevention and novel therapeutic strategies.
Collapse
Affiliation(s)
- Marie Nicole Ngoufack
- Department of Biochemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon.,Systems Biology, Chantal Biya' International Reference Centre for Research on HIV and AIDS Prevention and Management (CBIRC), Yaoundé, Cameroon
| | - Céline Nguefeu Nkenfou
- Systems Biology, Chantal Biya' International Reference Centre for Research on HIV and AIDS Prevention and Management (CBIRC), Yaoundé, Cameroon.,Department of Biology, Higher Teachers' Training College, University of Yaoundé I, Yaoundé, Cameroon
| | - Barbara Atogho Tiedeu
- Department of Biochemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - Linda Chapdeleine Mekue Mouafo
- Systems Biology, Chantal Biya' International Reference Centre for Research on HIV and AIDS Prevention and Management (CBIRC), Yaoundé, Cameroon.,Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Beatrice Dambaya
- Systems Biology, Chantal Biya' International Reference Centre for Research on HIV and AIDS Prevention and Management (CBIRC), Yaoundé, Cameroon.,Department of Animal Sciences, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - Elvis Ndukong Ndzi
- Systems Biology, Chantal Biya' International Reference Centre for Research on HIV and AIDS Prevention and Management (CBIRC), Yaoundé, Cameroon.,Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Charles Kouanfack
- Department of Public Health, Faculty of Medicine and Pharmaceutical Sciences, University of Dschang, Dschang, Cameroon
| | - Georges Nguefack-Tsague
- Department of Public Health, Faculty of Medicine and Biomedical Sciences, University of Yaoundé I, Yaoundé, Cameroon
| | - Wilfred Fon Mbacham
- Department of Biochemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - Alexis Ndjolo
- Systems Biology, Chantal Biya' International Reference Centre for Research on HIV and AIDS Prevention and Management (CBIRC), Yaoundé, Cameroon
| |
Collapse
|
5
|
Ngoufack MN, Nkenfou CN, Tiedeu BA, Nguefack-Tsague G, Mouafo LCM, Dambaya B, Nguefeu CN, Ndzi EN, Billong SC, Mbacham WF, Ndjolo A. CCR2 polymorphism and HIV: mutation in both mother and child is associated with higher transmission. INTERNATIONAL JOURNAL OF BIOCHEMISTRY AND MOLECULAR BIOLOGY 2019; 10:42-48. [PMID: 31777682 PMCID: PMC6874776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 10/12/2019] [Indexed: 06/10/2023]
Abstract
C-C motif chemokine receptor 2 (CCR2) is one of the co-receptors of HIV found on the surface of the target cell and studied as genetic factors known to be associated with HIV infection. This study investigates the influence of mothers' and children's CCR2 polymorphism on HIV acquisition in children. A cross-sectional study was performed in five hospitals in the Northern Region of Cameroon. Blood samples were collected from HIV-infected mothers and their exposed babies. DNA was extracted from the Buffy coat using the QIAamp®DNA mini kit (Qiagen). The DNA extract was subjected to Polymerase Chain Reaction (PCR) followed by Restriction Fragment Length Polymorphism. Hardy-Weinberg Equilibrium (HWE) was verified. A total of 113 HIV-positive mothers, and their 113 children (25 infected and 88 non-infected) under 15 years were enrolled. There was a significant relationship between mothers and children's polymorphisms (P = 0.000). There was a concordance of 57.5% between mothers and children genotypes (Kappa = 0.2, P = 0.001). Mothers carrying the CCR2-64I allele were 1.2 times more likely to have HIV-infected children compared to those without mutation (OR = 1.2, 95% CI: 0.5-3.0). Likewise children carrying the mutated phenotypes were 1.4 times more likely to be HIV-infected compared to those without mutation (OR = 1.4, 95% CI: 0.6-3.5). This risk increased to 2.0 (95% CI: 0.5-8.3) for children whose mothers also carried mutation, and decreased to 0.96 (95% CI: 0.2-3.8) for those whose mothers carried the wild type phenotype. In cases of a mutant phenotype in both mother and child, more attention should be paid during follow-up of children born from HIV-positive mother.
Collapse
Affiliation(s)
- Marie Nicole Ngoufack
- Department of Biochemistry, Faculty of Science, University of Yaoundé IYaoundé, Cameroon
- Chantal Biya’ International Reference Centre for Research on HIV and AIDS Prevention and Management (CBIRC)Yaoundé, Cameroon
| | - Céline N Nkenfou
- Chantal Biya’ International Reference Centre for Research on HIV and AIDS Prevention and Management (CBIRC)Yaoundé, Cameroon
- Department of Biology, Higher Teachers’ Training College, University of Yaoundé IYaoundé, Cameroon
| | - Barbara A Tiedeu
- Department of Biochemistry, Faculty of Science, University of Yaoundé IYaoundé, Cameroon
| | - Georges Nguefack-Tsague
- Department of Public Health, Faculty of Medicine and Biomedical Sciences, University of Yaoundé IYaoundé, Cameroon
- National Key Population Working Group, Ministry of Public HealthYaoundé, Cameroon
| | - Linda C Mekue Mouafo
- Chantal Biya’ International Reference Centre for Research on HIV and AIDS Prevention and Management (CBIRC)Yaoundé, Cameroon
- Department of Biochemistry, Faculty of Science, University of DschangDschang, Cameroon
| | - Beatrice Dambaya
- Chantal Biya’ International Reference Centre for Research on HIV and AIDS Prevention and Management (CBIRC)Yaoundé, Cameroon
- Department of Animal Sciences, Faculty of Science, University of Yaoundé IYaoundé, Cameroon
| | - Carine N Nguefeu
- Department of Biochemistry, Faculty of Science, University of Yaoundé IYaoundé, Cameroon
| | - Elvis N Ndzi
- Chantal Biya’ International Reference Centre for Research on HIV and AIDS Prevention and Management (CBIRC)Yaoundé, Cameroon
- Department of Biochemistry, Faculty of Science, University of DschangDschang, Cameroon
| | - Serge C Billong
- Department of Public Health, Faculty of Medicine and Biomedical Sciences, University of Yaoundé IYaoundé, Cameroon
- National Key Population Working Group, Ministry of Public HealthYaoundé, Cameroon
- Central Technical Group, National AIDS Control Committee, Ministry of Public HealthYaounde, Cameroon
| | - Wilfred F Mbacham
- Department of Biochemistry, Faculty of Science, University of Yaoundé IYaoundé, Cameroon
| | - Alexis Ndjolo
- Chantal Biya’ International Reference Centre for Research on HIV and AIDS Prevention and Management (CBIRC)Yaoundé, Cameroon
| |
Collapse
|
6
|
Farissi FZ, El Annaz H, El Alaoui MA, Elkochri S, Tagajdid MR, Abi R, Amine SA, Alaoui N, Kasouati J, Touil N, Frikh R, Hjira N, El Fahime EM, Mrani S. Investigation of CCR5-Δ32 (rs333) genetic polymorphism frequency and its relationship with HIV-1 susceptibility and disease progression: A Moroccan case-control study. GENE REPORTS 2019. [DOI: 10.1016/j.genrep.2019.100391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
7
|
Fatima F, Saleem S, Hameed A, Haider G, Ali Zaidi SA, Kanwal M, Zehra S, Azhar A. Association analysis and allelic distribution of deletion in CC chemokine receptor 5 gene (CCR5Δ32) among breast cancer patients of Pakistan. Mol Biol Rep 2019; 46:2387-2394. [DOI: 10.1007/s11033-019-04699-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 02/12/2019] [Indexed: 12/17/2022]
|
8
|
Mekue LM, Nkenfou CN, Dambaya B, Fotso I, Nguefack F, Fainguem N, Lobè EE, Kuiaté JR, Ndjolo A. IMPLICATION OF FIVE AIDS RELATED GENES IN MOTHER-TO-CHILD TRANSMISSION AND ACQUISITION OF HUMAN IMMUNODEFICIENCY VIRUS 1 IN CAMEROON. Afr J Infect Dis 2018; 13:1-10. [PMID: 30596191 PMCID: PMC6305080 DOI: 10.21010/ajid.v13i1.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 02/26/2018] [Accepted: 02/27/2018] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Genetic variants in the mother and/or infant have been described with evidence to be associated with mother-to-child transmission of HIV, but somehow with contradictory results depending on ethnic or geographic populations. We aimed at looking at the association between the allelic frequency of some genes with vertical transmission or acquisition of HIV in Cameroon. METHODOLOGY A total of 262 mothers (212 HIV-infected and 50 HIV non-infected) with their babies (270 in total, 42 HIV exposed-infected, 178 HIV exposed non-infected and 50 HIV non-exposed) were recruited in Yaounde-Cameroon. Their genotypes for CCR5-Delta32, CCR5 promoter59029A/G, CCR2-64I, SDF1-3'A and TRIM5α-136Q were analyzed using polymerase chain reaction and restriction fragment length polymorphisms. RESULTS Allelic frequencies were 14.7%, 41.9%, 9.5% and 14.7% for CCR2-64I, CCR5-59029-A/G, TRIM5α-136Q, SDF1-3'A respectively in the mothers and 18.8%, 35.9%, 11.3% and 20.5% in the babies. No delta 32 mutation in the CCR5 gene was found. The mutant genotype was most significantly frequent in the non-transmitter than in the transmitter (p= 0.005) for the SDF-1 3'A. SDF1-3'A [Odd ratio = 1.69; 95% confidence interval: 0.1158 to 0.7277); was associated to MTCT, P = 0.008.The homozygote mutants for the CCR5-59029-G were significantly higher in the infected than in the exposed uninfected babies (p=0.04). The mutations in the other genes were neither implicated in the acquisition nor in the transmission. CONCLUSION SDF1-3'A was associated to the reduction of MTCT. The CCR5-59029-A/G favored acquisition of HIV by babies. Our study showed that polymorphisms in chemokine ligand may be involved in MTCT.
Collapse
Affiliation(s)
- Linda Mouafo Mekue
- Faculty of Science, University of Dschang, P.O. Box 56, Dschang, Cameroon,Chantal BIYA International Reference Centre, P.O. Box 3077, Yaounde, Cameroon
| | - Céline Nguefeu Nkenfou
- Chantal BIYA International Reference Centre, P.O. Box 3077, Yaounde, Cameroon,Higher Teacher Training College, University of Yaounde I, P.O. Box 47, Yaounde, Cameroon,Corresponding Author’s E-mail:
| | - Beatrice Dambaya
- Chantal BIYA International Reference Centre, P.O. Box 3077, Yaounde, Cameroon
| | - Idriss Fotso
- Chantal BIYA International Reference Centre, P.O. Box 3077, Yaounde, Cameroon
| | - Felicitée Nguefack
- Chantal BIYA Foundation’ Mother and Child Center, P.O. Box 1936, Yaounde, Cameroon
| | - Nadine Fainguem
- Chantal BIYA International Reference Centre, P.O. Box 3077, Yaounde, Cameroon
| | - Elise Elong Lobè
- Chantal BIYA International Reference Centre, P.O. Box 3077, Yaounde, Cameroon
| | - Jules Roger Kuiaté
- Faculty of Science, University of Dschang, P.O. Box 56, Dschang, Cameroon
| | - Alexis Ndjolo
- Chantal BIYA International Reference Centre, P.O. Box 3077, Yaounde, Cameroon,Faculty of Medicine and Biomedical Science, University of Yaounde I, P.O Box 1364, Yaounde, Cameroon
| |
Collapse
|
9
|
Polymorphisms in CCR5Δ32 and Risk of HIV-1 Infection in the Southeast of Caspian Sea, Iran. DISEASE MARKERS 2017; 2017:4190107. [PMID: 29209099 PMCID: PMC5676439 DOI: 10.1155/2017/4190107] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 08/23/2017] [Accepted: 10/08/2017] [Indexed: 11/30/2022]
Abstract
Prevalence of CCR5Δ32 among blood samples of more than 400 healthy and HIV-1-infected people was investigated in Iran. Polymerase chain reaction (PCR) following DNA extraction was used. Desired frequency was analyzed by Hardy–Weinberg equilibrium (HWE) analysis and SPSS 16.0 software to harvest the results. The prevalence of CCRΔ32 heterozygote genotype was 3% in healthy people and 0.7% in HIV-1–infected individuals. There was no homozygote CCR5Δ32 in both groups, and the allele Δ32 was only observed in 1.5% and 0.36% of healthy and HIV-1–infected participants, respectively. Therefore according to this study, the frequency of the allele CCR5Δ32 indicates no significant difference between either groups (p = 0.18) and it sounds that the mentioned mutation in heterozygote people would not affect their susceptibility against HIV infection. Genotyping trial in Iranians with HIV infection is supposed to be helpful as a matter of prognostic purposes.
Collapse
|
10
|
Genetic diagnosis of seronegative (HIV−) partner of female patient with AIDS in the context of HIV transmission. HIV & AIDS REVIEW 2016. [DOI: 10.1016/j.hivar.2016.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
11
|
Fouquet B, Ghosn J, Quertainmont Y, Salmon D, Rioux C, Duvivier C, Delfraissy JF, Misrahi M. Identification of Variants of Hepatitis C Virus (HCV) Entry Factors in Patients Highly Exposed to HCV but Remaining Uninfected: An ANRS Case-Control Study. PLoS One 2015; 10:e0142698. [PMID: 26571379 PMCID: PMC4646460 DOI: 10.1371/journal.pone.0142698] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 10/26/2015] [Indexed: 12/15/2022] Open
Abstract
Hepatitis C virus (HCV) causes persistent infection in 75% of cases and is a major public health problem worldwide. More than 92% of intravenous drug users (IDU) infected by human immunodeficiency virus type 1 (HIV-1) are seropositive for HCV, and it is conceivable that some HIV-1-infected IDU who remain uninfected by HCV may be genetically resistant.Here we conducted a case-control study to identify mutations in HCV entry coreceptors in HIV-infected IDU who remained uninfected by HCV. We recruited 138 patients, comprising 22 HIV+ HCV- case IDU and 116 HIV+ HCV+ control IDU. We focused on coreceptors in which point mutations are known to abolish HCV infectivity in vitro. Our previous study of the Claudin-1 gene revealed no specific variants in the same case population. Here we performed direct genomic sequencing of the Claudin-6, Claudin-9, Occludin and Scavenger receptor-B1 (SCARB1) gene coding regions. Most HIV+ HCV- IDU had no mutations in HCV coreceptors. However, two HIV+ HCV- patients harbored a total of four specific mutations/variants of HCV entry factors that were not found in the HIV+ HCV+ controls. One case patient harbored heterozygous variants of both Claudin-6 and Occludin, and the other case patient harbored two heterozygous variants of SCARB1. This suggests that HCV resistance might involve complex genetic events and factors other than coreceptors, a situation similar to that reported for HIV-1 resistance.
Collapse
Affiliation(s)
- Baptiste Fouquet
- Univ Paris Sud, Faculté de Médecine, Hôpitaux Universitaires Paris Sud, Hopital Bicetre, 94275, Le Kremlin-Bicêtre, France
| | - Jade Ghosn
- APHP, Unité Fonctionnelle de Thérapeutique en Immuno-Infectiologie, Hôpitaux Universitaire Paris Centre, Hôpital Hôtel Dieu, Paris, France
- Université Paris Descartes, EA 7327, Faculté de Médecine site Necker, Sorbonne Paris Cité, Paris, France
| | - Yann Quertainmont
- APHP, Service de Médecine Interne, Hôpitaux Universitaires Paris Sud, Hôpital Bicêtre, 94275, Le Kremlin-Bicêtre, France
| | - Dominique Salmon
- APHP, Service de Médecine Interne, Hôpitaux Universitaires Paris Centre, Hôpital Cochin, Paris, France
| | - Christophe Rioux
- APHP, Service des Maladies Infectieuses et Tropicales, Hôpitaux Universitaires Paris Nord val de Seine, Hospitalier Bichat-Claude Bernard, Paris, France
| | | | - Jean-François Delfraissy
- APHP, Service de Médecine Interne, Hôpitaux Universitaires Paris Sud, Hôpital Bicêtre, 94275, Le Kremlin-Bicêtre, France
| | - Micheline Misrahi
- Univ Paris Sud, Faculté de Médecine, Hôpitaux Universitaires Paris Sud, Hopital Bicetre, 94275, Le Kremlin-Bicêtre, France
| |
Collapse
|
12
|
Gosling AL, Buckley HR, Matisoo-Smith E, Merriman TR. Pacific Populations, Metabolic Disease and 'Just-So Stories': A Critique of the 'Thrifty Genotype' Hypothesis in Oceania. Ann Hum Genet 2015; 79:470-80. [PMID: 26420513 DOI: 10.1111/ahg.12132] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 07/24/2015] [Indexed: 12/28/2022]
Abstract
Pacific populations have long been observed to suffer a high burden of metabolic disease, including obesity, type 2 diabetes and gout. The 'Thrifty Genotype' hypothesis has frequently been used to explain this high prevalence of disease. Here, the 'Thrifty Genotype' hypothesis and the evolutionary background of Pacific populations are examined. We question its relevance not only in the Pacific region but more generally. Not only has the hypothesis not been explicitly tested, but most archaeological and anthropological data from the Pacific fundamentally do not support its application.
Collapse
Affiliation(s)
- Anna L Gosling
- Department of Biochemistry, University of Otago, Dunedin, New Zealand.,Department of Anatomy, University of Otago, Dunedin, New Zealand.,Allan Wilson Centre for Molecular Ecology and Evolution, University of Otago, Dunedin, New Zealand
| | - Hallie R Buckley
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Elizabeth Matisoo-Smith
- Department of Anatomy, University of Otago, Dunedin, New Zealand.,Allan Wilson Centre for Molecular Ecology and Evolution, University of Otago, Dunedin, New Zealand
| | - Tony R Merriman
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
| |
Collapse
|
13
|
Gu WG. Genome editing-based HIV therapies. Trends Biotechnol 2015; 33:172-9. [DOI: 10.1016/j.tibtech.2014.12.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 10/17/2014] [Accepted: 12/17/2014] [Indexed: 12/26/2022]
|
14
|
Kagoné TS, Bisseye C, Méda N, Testa J, Pietra V, Kania D, Yonli AT, Compaoré TR, Nikiéma JB, de Souza C, Simpore J. A variant of DC-SIGN gene promoter associated with resistance to HIV-1 in serodiscordant couples in Burkina Faso. ASIAN PAC J TROP MED 2014; 7S1:S93-6. [PMID: 25312200 DOI: 10.1016/s1995-7645(14)60211-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 05/09/2014] [Accepted: 06/18/2014] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVE To study the involvement of variations in 4 genes associated with susceptibility and/or protection against HIV-1 in serodiscordant couples in Burkina Faso, namely, genes encoding HLA-B57, interferon regulatory factor 1 (IRF1), dendritic cell-specific ICAM3-grabbing nonintegrin (DC-SIGN) and CCR5 delta 32 (CCR5Δ32). METHODS Two DC-SIGN and two IRF1 single nucleotide polymorphisms (SNPs) as well as HLA-B57*01 and CCR5Δ32 alleles were genotyped in 51 serodiscordant couples in Burkina Faso. DC-SIGN, IRF1 and HLA-B57*01 genotyping was carried out by real time PCR using TaqMan assays (Applied Biosystems, USA and Sacace Biotechnologies, Italy). CCR5Δ32 deletion was investigated by PCR. RESULTS The two SNPs of DC-SIGN promoter showed a significant genotypic difference in serodiscordant couples. After multivariate analysis, only the association between DC-SIGN rs2287886 and HIV-1 remained significant (P<0.01). No association was found between IRF1 SNPs and HIV-1 infection. CCR5Δ32 wild type allele was found in 100% of serodiscordant couples. A high frequency of HLA-B57*01 allele was found in the HIV-positive (78%) compared with HIV-negative group (51%), however this difference was no longer significant after the correction of the sex confounding effect in the logistic regression model. CONCLUSIONS Our study suggests a protective role of a variation of DC-SIGN promoter and genetic resistance to HIV-1 in serodiscordant couples in Burkina Faso.
Collapse
Affiliation(s)
- Thérèse Samdapawindé Kagoné
- Biomolecular Research Center Pietro Annigoni CERBA/Labiogene University of Ouagadougou, Burkina Faso; Centre MURAZ Bobo-Dioulasso, Burkina Faso
| | - Cyrille Bisseye
- Biomolecular Research Center Pietro Annigoni CERBA/Labiogene University of Ouagadougou, Burkina Faso; Laboratory of Molecular and Cellular Biology, University of Science and Technique of Masuku (USTM), Franceville, Gabon.
| | | | - Jean Testa
- Centre MURAZ Bobo-Dioulasso, Burkina Faso
| | | | | | - Albert Théophane Yonli
- Biomolecular Research Center Pietro Annigoni CERBA/Labiogene University of Ouagadougou, Burkina Faso
| | - Tegwindé Rebeca Compaoré
- Biomolecular Research Center Pietro Annigoni CERBA/Labiogene University of Ouagadougou, Burkina Faso
| | - Jean Baptiste Nikiéma
- Biomolecular Research Center Pietro Annigoni CERBA/Labiogene University of Ouagadougou, Burkina Faso
| | | | - Jacques Simpore
- Biomolecular Research Center Pietro Annigoni CERBA/Labiogene University of Ouagadougou, Burkina Faso
| |
Collapse
|
15
|
Pehlivan M, Sahin HH, Ozdilli K, Onay H, Ozcan A, Ozkinay F, Pehlivan S. Gene Polymorphisms and Febrile Neutropenia in Acute Leukemia—No Association with IL-4, CCR-5, IL-1RA, but the MBL-2, ACE, and TLR-4 Are Associated with the Disease in Turkish Patients: A Preliminary Study. Genet Test Mol Biomarkers 2014; 18:474-81. [DOI: 10.1089/gtmb.2014.0004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Mustafa Pehlivan
- Department of Hematology, School of Medicine, Gaziantep University, Gaziantep, Turkey
| | | | - Kurşat Ozdilli
- Department of Medical Biology, Medipol University Hospital, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Hüseyin Onay
- Department of Medical Genetics, Ege University School of Medicine, Izmir, Turkey
| | - Ali Ozcan
- Department of Medical Genetics, Ege University School of Medicine, Izmir, Turkey
| | - Ferda Ozkinay
- Department of Medical Genetics, Ege University School of Medicine, Izmir, Turkey
| | - Sacide Pehlivan
- Department of Medical Biology, Medipol University Hospital, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
- Department of Medical Genetics, Ege University School of Medicine, Izmir, Turkey
| |
Collapse
|
16
|
Abstract
Obesity is an escalating threat of pandemic proportions, currently affecting billions of people worldwide and exerting a devastating socioeconomic influence in industrialized countries. Despite intensive efforts to curtail obesity, results have proved disappointing. Although it is well recognized that obesity is a result of gene-environment interactions and that predisposition to obesity lies predominantly in our evolutionary past, there is much debate as to the precise nature of how our evolutionary past contributed to obesity. The "thrifty genotype" hypothesis suggests that obesity in industrialized countries is a throwback to our ancestors having undergone positive selection for genes that favored energy storage as a consequence of the cyclical episodes of famine and surplus after the advent of farming 10 000 years ago. Conversely, the "drifty genotype" hypothesis contends that the prevalence of thrifty genes is not a result of positive selection for energy-storage genes but attributable to genetic drift resulting from the removal of predative selection pressures. Both theories, however, assume that selection pressures the ancestors of modern humans living in western societies faced were the same. Moreover, neither theory adequately explains the impact of globalization and changing population demographics on the genetic basis for obesity in developed countries, despite clear evidence for ethnic variation in obesity susceptibility and related metabolic disorders. In this article, we propose that the modern obesity pandemic in industrialized countries is a result of the differential exposure of the ancestors of modern humans to environmental factors that began when modern humans left Africa around 70 000 years ago and migrated through the globe, reaching the Americas around 20 000 years ago. This article serves to elucidate how an understanding of ethnic differences in genetic susceptibility to obesity and the metabolic syndrome, in the context of historic human population redistribution, could be used in the treatment of obesity in industrialized countries.
Collapse
Affiliation(s)
- Dyan Sellayah
- MRC Harwell (D.S., R.D.C.), Genetics of Type 2 Diabetes, Harwell Science and Innovation Campus, Harwell OX11 ORD, United Kingdom; Department of Physiology, Anatomy and Genetics (D.S.), University of Oxford, Oxford OX1 3PT, United Kingdom; and Institute of Developmental Sciences (F.R.C.), University of Southampton, Southampton SO16 6YD, United Kingdom
| | | | | |
Collapse
|