1
|
Al-Harbi N, Abdulla MH, Vaali-Mohammed MA, Bin Traiki T, Alswayyed M, Al-Obeed O, Abid I, Al-Omar S, Mansour L. Evidence of Association between CTLA-4 Gene Polymorphisms and Colorectal Cancers in Saudi Patients. Genes (Basel) 2023; 14:genes14040874. [PMID: 37107632 PMCID: PMC10138150 DOI: 10.3390/genes14040874] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/28/2023] [Accepted: 04/03/2023] [Indexed: 04/29/2023] Open
Abstract
Cytotoxic T lymphocyte antigen-4 (CTLA-4) has been identified as an immunosuppressive molecule involved in the negative regulation of T cells. It is highly expressed in several types of autoimmune diseases and cancers including colorectal cancer (CRC). (1) Objective: To explore the association between CTLA-4 single nucleotide polymorphisms (SNP) and risk to (CRC) in the Saudi population. (2) Methods: In this case-control study, 100 patients with CRC and 100 matched healthy controls were genotyped for three CTLA-4 SNPs: rs11571317 (-658C > T), rs231775 (+49A > G) and rs3087243 (CT60 G > A), using TaqMan assay method. Associations were evaluated using odds ratios (ORs) and 95% confidence intervals (95% CIs) for five inheritance models (co-dominant, dominant, recessive, over-dominant and log-additive). Furthermore, CTLA-4 expression levels were evaluated using quantitative real-time PCR (Q-RT-PCR) in colon cancer and adjacent colon tissues. (3) Results: Our result showed a significant association of the G allele (OR = 2.337, p < 0.0001) and GG genotype of the missense SNP +49A > G with increased risk of developing CRC in codominant (OR = 8.93, p < 0.0001) and recessive (OR = 16.32, p < 0.0001) models. Inversely, the AG genotype was significantly associated with decreased risk to CRC in the codominant model (OR = 0.23, p < 0.0001). In addition, the CT60 G > A polymorphism exhibited a strong association with a high risk of developing CRC for the AA genotype in codominant (OR = 3.323, p = 0.0053) and in allele models (OR = 1.816, p = 0.005). No significant association was found between -658C > T and CRC. The haplotype analysis showed that the G-A-G haplotype of the rs11571317, rs231775 and rs3087243 was associated with high risk for CRC (OR = 57.66; p < 0.001). The CTLA-4 mRNA gene expression was found significantly higher in tumors compared to normal adjacent colon samples (p < 0.001). (4) Conclusions: Our findings support an association between the CTLA-4 rs231775 (+49A > G) and rs3087243 (CT60 G > A) polymorphisms and CRC risk in the Saudi population. Further validation in a larger cohort size is needed prior to utilizing these SNPs as a potential screening marker in the Saudi population.
Collapse
Affiliation(s)
- Nouf Al-Harbi
- Department of Zoology, College of Science, King Saud University, Riyadh 11472, Saudi Arabia
| | - Maha-Hamadien Abdulla
- Department of Surgery, College of Medicine, King Saud University, Riyadh 11472, Saudi Arabia
| | | | - Thamer Bin Traiki
- Department of Surgery, College of Medicine, King Saud University, Riyadh 11472, Saudi Arabia
| | - Mohammed Alswayyed
- Department of Pathology and Laboratory Medicine, College of Medicine, King Saud University, Riyadh 11495, Saudi Arabia
| | - Omar Al-Obeed
- Department of Surgery, College of Medicine, King Saud University, Riyadh 11472, Saudi Arabia
| | - Islem Abid
- Department of Botany and Microbiology, Science College, King Saud University, Riyadh 11495, Saudi Arabia
| | - Suliman Al-Omar
- Department of Zoology, College of Science, King Saud University, Riyadh 11472, Saudi Arabia
| | - Lamjed Mansour
- Department of Zoology, College of Science, King Saud University, Riyadh 11472, Saudi Arabia
| |
Collapse
|
2
|
Al-Harbi N, Vaali-Mohammed MA, Al-Omar S, Zubaidi A, Al-Obeed O, Abdulla MH, Mansour L. Rs10204525 Polymorphism of the Programmed Death (PD-1) Gene Is Associated with Increased Risk in a Saudi Arabian Population with Colorectal Cancer. Medicina (B Aires) 2022; 58:medicina58101439. [PMID: 36295599 PMCID: PMC9607617 DOI: 10.3390/medicina58101439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 10/05/2022] [Accepted: 10/10/2022] [Indexed: 11/27/2022] Open
Abstract
Checkpoint programmed death-1 (PD-1) has been identified as an immunosuppressive molecule implicated in the immune evasion of transformed cells. It is highly expressed in tumor cells in order to evade host immunosurveillance. In this study, we aimed to assess the association between single nucleotide polymorphisms (SNP) of PD-1 and the risk of colorectal cancer (CRC) in the Saudi population. For this case-control study, the TaqMan assay method was used for genotyping three SNPs in the PD-1 gene in 100 CRC patients and 100 healthy controls. Associations were estimated using odds ratios (ORs) and 95% confidence intervals (95% CIs) for multiple inheritance models (codominant, dominant, recessive, over-dominant, and log-additive). Moreover, PD-1 gene expression levels were evaluated using quantitative real-time PCR in colon cancer tissue and adjacent colon tissues. We found that the PD-1 rs10204525 A allele was associated with an increased risk of developing CRC (OR = 2.35; p = 0.00657). In addition, the PD-1 rs10204525 AA homozygote genotype was associated with a high risk of developing CRC in the codominant (OR = 21.65; p = 0.0014), recessive (OR = 10.97; p = 0.0015), and additive (OR = 1.98; p = 0.012) models. A weak protective effect was found for the rs2227981 GG genotype (OR = 2.52; p = 0.034), and no significant association was found between the rs2227982 and CRC. Haplotype analysis showed that the rs10204525, rs2227981, rs2227982 A-A-G haplotype was associated with a significantly increased risk of CRC (OR = 6.79; p =0.031).
Collapse
Affiliation(s)
- Nouf Al-Harbi
- Department of Zoology, College of Science, King Saud University, Building 05, Riyadh 11451, Saudi Arabia
| | | | - Suliman Al-Omar
- Department of Zoology, College of Science, King Saud University, Building 05, Riyadh 11451, Saudi Arabia
| | - Ahmed Zubaidi
- Department of Surgery, College of Medicine, King Saud University, Riyadh 11472, Saudi Arabia
| | - Omar Al-Obeed
- Department of Surgery, College of Medicine, King Saud University, Riyadh 11472, Saudi Arabia
| | - Maha-Hamadien Abdulla
- Department of Surgery, College of Medicine, King Saud University, Riyadh 11472, Saudi Arabia
- Correspondence: (M.-H.A.); or (L.M.)
| | - Lamjed Mansour
- Department of Zoology, College of Science, King Saud University, Building 05, Riyadh 11451, Saudi Arabia
- Correspondence: (M.-H.A.); or (L.M.)
| |
Collapse
|
3
|
Abstract
This paper traces the evolution of a broader environmental health role for nursing by focusing on the health effects of exposure to environmental pollutants and of global environmental change. This evolving role is reviewed through the examination of selected community health nursing texts published during the last several decades. Key role strategies based on this expanded and evolving environmental role are proposed. Finally, a survey is described that is intended to heighten awareness of personal and professional attitudes and behaviors related to the environment.
Collapse
Affiliation(s)
- L B Tiedje
- College of Nursing, Michigan State University, East Lansing 48824-1317, USA
| | | |
Collapse
|