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Chambuso R, Kaambo E, Denny L, Gray CM, Williamson AL, Migdalska-Sęk M, Agenbag G, Rebello G, Ramesar R. Investigation of Cervical Tumor Biopsies for Chromosomal Loss of Heterozygosity (LOH) and Microsatellite Instability (MSI) at the HLA II Locus in HIV-1/HPV Co-infected Women. Front Oncol 2019; 9:951. [PMID: 31681558 PMCID: PMC6803484 DOI: 10.3389/fonc.2019.00951] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 09/09/2019] [Indexed: 01/05/2023] Open
Abstract
Background: A subgroup of women who are co-infected with human immunodeficiency virus type 1 (HIV-1) and human papillomavirus (HPV) progress rapidly to cervical disease regardless of high CD4 counts. Chromosomal loss of heterozygosity (LOH) and microsatellite instability (MSI) are early frequent genetic alterations occurring in solid tumors. Loss of an allele or part of a chromosome can have multiple functional effects on immune response genes, oncogenes, DNA damage-repair genes, and tumor-suppressor genes. To characterize the genetic alterations that may influence rapid tumor progression in some HIV-1-positive women, the extent of LOH and MSI at the HLA II locus on chromosome 6p in cervical tumor biopsy DNA samples with regard to HIV-1/HPV co-infection in South African women was investigated. Methods: A total of 164 women with cervical disease were recruited for this study, of which 74 were HIV-1-positive and 90 were HIV-1-seronegative. DNA from cervical tumors and matched buccal swabs were used for analyses. Six fluorescently-labeled oligonucleotide primer pairs in a multiplex PCR amplification were used to study LOH and MSI. Pearson chi-squared test for homogeneity of proportions using an exact p value, a two-proportion Z-score test, ROC curves and a logistic regression model were used for statistical analyses. All p-values were corrected for false discovery rate (FDR) using the Benjamini-Hochberg test and the adjusted p-values (q-values) were reported. All tests were significant when both p and q < 0.05. Results: Tumor DNA from HIV-1/HPV co-infected women demonstrated a higher frequency of LOH/MSI at the HLA II locus on chromosome 6p21.21 than tumor DNA from HIV-1-seronegative women (D6S2447, 74.2 vs. 42.6%; p = 0.001, q = 0.003), D6S2881 at 6p21.31 (78.3 vs. 42.9%; p = 0.002, q = 0.004), D6S2666 at 6p21.32 (79 vs. 57.1%; p = 0.035, q = 0.052), and D6S2746, at 6p21.33 (64.3 vs. 29.4%; p < 0.001, q < 0.001), respectively. Conclusions: HPV infection alone can induce LOH/MSI at the HLA II locus in cervical tumor DNA, whereas HIV-1 co-infection exacerbates it, suggesting that this may accelerate cervical disease progression in a subgroup of HIV-1-positive women.
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Affiliation(s)
- Ramadhani Chambuso
- MRC Unit for Genomic and Precision Medicine, Division of Human Genetics, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.,Department of Gynaecology, Morogoro Regional Referral Hospital, Morogoro, Tanzania
| | - Evelyn Kaambo
- Division of Medical Virology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.,Department of Biochemistry and Medical Microbiology, University of Namibia School of Medicine, Windhoek, Namibia
| | - Lynette Denny
- South African Medical Research Council, Clinical Gynaecological Cancer Research Centre, University of Cape Town, Cape Town, South Africa.,Department of Obstetrics and Gynaecology, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
| | - Clive M Gray
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa.,Division of Immunology, Department of Pathology and National Health Laboratory Service, University of Cape Town and Groote Schuur Hospital, Cape Town, South Africa
| | - Anna-Lise Williamson
- Division of Medical Virology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.,South African Medical Research Council, Clinical Gynaecological Cancer Research Centre, University of Cape Town, Cape Town, South Africa.,Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Monika Migdalska-Sęk
- Department of Biomedicine and Genetics, Medical University of Lodz, Lodz, Poland
| | - Gloudi Agenbag
- MRC Unit for Genomic and Precision Medicine, Division of Human Genetics, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.,Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - George Rebello
- MRC Unit for Genomic and Precision Medicine, Division of Human Genetics, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Raj Ramesar
- MRC Unit for Genomic and Precision Medicine, Division of Human Genetics, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.,Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
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Sun C, Deng F, Meng L, Chen G. Correlation between TAP detection and common digestive tract precancerous lesions. Oncol Lett 2017; 15:1616-1620. [PMID: 29434857 PMCID: PMC5774502 DOI: 10.3892/ol.2017.7496] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 09/14/2017] [Indexed: 02/06/2023] Open
Abstract
The aim of the present study was to investigate the clinical significance of abnormal sugar-chain glycoprotein tumor abnormal protein (TAP) in the screening of common digestive tract pre-cancer colon adenocarcinoma lesions. A total of 50 colitis patients, 50 colon polyp patients and 50 colon adenocarcinoma patients admitted to our hospital from March, 2012 to May, 2014 were included. Fresh blood from patient's fingertips was collected and condensation staining was used to detect TAP expression. Positive expressions of TAP in patients in the colitis, colon polyp and colon adenocarcinoma groups prior to treatment were 6,76 and 92%, respectively. The TAP-positive expression rate comparisons between the three groups were statistically significant (P<0.05), and TAP-positive expression showed an increasing trend. TAP-positive expression was not significantly correlated with sex, age or ethnic group (P>0.05). Patient follow-up revealed that the tumor incidence rate in TAP-positive patients was significantly higher than that in TAP-negative in the colitis and colon polyp groups (P<0.05), and the postoperative tumor recurrence rate in TAP-positive patients was significantly higher than that in TAP-negative in the colon adenocarcinoma group (P<0.05). TAP had a higher expression in colon pre-adenocarcinoma lesions. Additionally, TAP participated in the processes from intestinal mucosal inflammation to colon polyp formation to tissue canceration, and was correlated with these. Thus, TAP can be used for the screening of digestive tract precancerous lesions.
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Affiliation(s)
- Changqing Sun
- Department of Oncology, Dezhou People's Hospital, Dezhou, Shandong 253000, P.R. China
| | - Fang Deng
- Department of Oncology, Dezhou People's Hospital, Dezhou, Shandong 253000, P.R. China
| | - Lingjun Meng
- Department of Oncology, Dezhou People's Hospital, Dezhou, Shandong 253000, P.R. China
| | - Guohua Chen
- Department of Oncology, Dezhou People's Hospital, Dezhou, Shandong 253000, P.R. China
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