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Farajnezhad N, Ghandil P, Tahmasebi-Birgani M, Mohammadi-Asl J. Folate gene polymorphisms CBS 844ins68 and RFC1 A80G and risk of Down syndrome offspring in young Iranian women: A cross-sectional study. Int J Reprod Biomed 2024; 22:127-138. [PMID: 38628775 PMCID: PMC11017215 DOI: 10.18502/ijrm.v22i2.15709] [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: 02/21/2023] [Revised: 10/30/2023] [Accepted: 01/24/2024] [Indexed: 04/19/2024] Open
Abstract
Background Cytogenetics and association studies showed that folate gene polymorphisms can increase the risk of chromosomal nondisjunction and aneuploidies. The folate-metabolizing gene polymorphisms in Down syndrome mothers (DSM) have been assessed in a variety of populations. Reduced folate carrier 1 (RFC1) and cystathionine beta-synthase (CBS) are key enzymes in folate metabolism. Objective 2 common polymorphisms, CBS 844ins68 and RFC1 A80G, were analyzed to determine their probable risk for having Down syndrome (DS) babies in young mothers of Khuzestan province, Iran. Materials and Methods This study was conducted on 100 mothers who had trisomy 21 DS children. 100 age- and ethnic-matched mothers with at least 2 healthy children and no history of abnormal pregnancies were considered as control. The samples were collected from all the mothers from June 2019 to April 2021. Genomic DNA was extracted from peripheral blood. The CBS-844ins68 and RFC1-A80G were genotyped using polymerase chain reaction-electrophoresis and restriction fragment length polymorphism, respectively. Results The frequency of RFC1 AG and GG genotypes in DSM was significantly higher than the control mothers (odds ratio [OR] of 2.38 and 3.07, respectively). The heterozygote genotype of CBS 844ins68 was significantly more prevalent among DSM than the control (OR: 2.419). The OR was significantly increased to 6.667 when the homozygote of both variants was found together. Conclusion Studying polymorphisms possibly increases the susceptibility of having a DS child. However, ethnicity, nutrition, and epistatic interactions are considerable factors to be evaluated in future studies.
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Affiliation(s)
- Neda Farajnezhad
- Department of Medical Genetics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Pegah Ghandil
- Department of Medical Genetics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Maryam Tahmasebi-Birgani
- Department of Medical Genetics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Cellular and Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Cano A, Vazquez-Chantada M, Conde-Vancells J, Gonzalez-Lahera A, Mosen-Ansorena D, Blanco FJ, Clément K, Aron-Wisnewsky J, Tran A, Gual P, García-Monzón C, Caballería J, Castro A, Martínez-Chantar ML, Mato JM, Zhu H, Finnell RH, Aransay AM. Impaired Function of Solute Carrier Family 19 Leads to Low Folate Levels and Lipid Droplet Accumulation in Hepatocytes. Biomedicines 2023; 11:biomedicines11020337. [PMID: 36830876 PMCID: PMC9953281 DOI: 10.3390/biomedicines11020337] [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: 11/30/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 01/27/2023] Open
Abstract
Low serum folate levels are inversely related to metabolic associated fatty liver disease (MAFLD). The role of the folate transporter gene (SLC19A1) was assessed to clarify its involvement in lipid accumulation during the onset of MAFLD in humans and in liver cells by genomic, transcriptomic, and metabolomic techniques. Genotypes of 3 SNPs in a case-control cohort were initially correlated to clinical and serum MAFLD markers. Subsequently, the expression of 84 key genes in response to the loss of SLC19A1 was evaluated with the aid of an RT2 profiler-array. After shRNA-silencing of SLC19A1 in THLE2 cells, folate and lipid levels were measured by ELISA and staining techniques, respectively. In addition, up to 482 amino acids and lipid metabolites were semi-quantified in SLC19A1-knockdown (KD) cells through ultra-high-performance liquid chromatography coupled with mass spectrometry. SNPs, rs1051266 and rs3788200, were significantly associated with the development of fatty liver for the single-marker allelic test. The minor alleles of these SNPs were associated with a 0.6/-1.67-fold decreased risk of developing MAFLD. When SLC19A1 was KD in THLE2 cells, intracellular folate content was four times lower than in wild-type cells. The lack of functional SLC19A1 provoked significant changes in the regulation of genes associated with lipid droplet accumulation within the cell and the onset of NAFLD. Metabolomic analyses showed a highly altered profile, where most of the species that accumulated in SLC19A1-KD-cells belong to the chemical groups of triacylglycerols, diacylglycerols, polyunsaturated fatty acids, and long chain, highly unsaturated cholesterol esters. In conclusion, the lack of SLC19A1 gene expression in hepatocytes affects the regulation of key genes for normal liver function, reduces intracellular folate levels, and impairs lipid metabolism, which entails lipid droplet accumulation in hepatocytes.
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Affiliation(s)
- Ainara Cano
- Food Research, AZTI, Basque Research and Technology Alliance (BRTA), Parque Tecnologico de Bizkaia, Astondo Bidea, Building 609, 48160 Derio, Spain
- OWL Metabolomics, Parque Tecnologico de Bizkaia, Building 502, 48160 Derio, Spain
| | - Mercedes Vazquez-Chantada
- OWL Metabolomics, Parque Tecnologico de Bizkaia, Building 502, 48160 Derio, Spain
- Department of Nutritional Sciences, Dell Paediatric Research Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - Javier Conde-Vancells
- Department of Nutritional Sciences, Dell Paediatric Research Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - Aintzane Gonzalez-Lahera
- CIC bioGUNE, Parque Tecnologico de Bizkaia, Building 801-A, 48160 Derio, Spain
- CIBERehd, ISCIII, 28029 Madrid, Spain
| | | | - Francisco J. Blanco
- CIC bioGUNE, Parque Tecnologico de Bizkaia, Building 801-A, 48160 Derio, Spain
- Ikerbasque, Basque Foundation for Science, 48009 Bilbao, Spain
| | - Karine Clément
- Nutriomics Research Group, Nutrition Department, Pitié-Salpétrière Hospital, INSERM, Sorbonne Université, F-75013 Paris, France
- INSERM, UMR_S 1166, NutriOmics Team 6, F-75013 Paris, France
- Assistance Publique Hôpitaux de Paris, Nutrition department ICAN and CRNH-Ile de France, Pitié-Salpêtrière Hospital, F-75013 Paris, France
| | - Judith Aron-Wisnewsky
- Nutriomics Research Group, Nutrition Department, Pitié-Salpétrière Hospital, INSERM, Sorbonne Université, F-75013 Paris, France
- INSERM, UMR_S 1166, NutriOmics Team 6, F-75013 Paris, France
- Assistance Publique Hôpitaux de Paris, Nutrition department ICAN and CRNH-Ile de France, Pitié-Salpêtrière Hospital, F-75013 Paris, France
| | - Albert Tran
- Team 8 “Chronic Liver Diseases Associated with Obesity and Alcohol”, INSERM, U1065, Centre Hospitalier Universitaire de Nice, C3M, Université Côte d’Azur, 06000 Nice, France
| | - Philippe Gual
- Team 8 “Chronic Liver Diseases Associated with Obesity and Alcohol”, INSERM, U1065, Centre Hospitalier Universitaire de Nice, C3M, Université Côte d’Azur, 06000 Nice, France
| | - Carmelo García-Monzón
- CIBERehd, ISCIII, 28029 Madrid, Spain
- Liver Research Unit, Santa Cristina University Hospital, Instituto de Investigación Sanitaria Princesa, 28009 Madrid, Spain
| | - Joan Caballería
- CIBERehd, ISCIII, 28029 Madrid, Spain
- Liver Unit, Hospital Clinic, 08036 Barcelona, Spain
| | - Azucena Castro
- OWL Metabolomics, Parque Tecnologico de Bizkaia, Building 502, 48160 Derio, Spain
| | - María Luz Martínez-Chantar
- CIC bioGUNE, Parque Tecnologico de Bizkaia, Building 801-A, 48160 Derio, Spain
- CIBERehd, ISCIII, 28029 Madrid, Spain
| | - José M. Mato
- CIC bioGUNE, Parque Tecnologico de Bizkaia, Building 801-A, 48160 Derio, Spain
- CIBERehd, ISCIII, 28029 Madrid, Spain
| | - Huiping Zhu
- Department of Nutritional Sciences, Dell Paediatric Research Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - Richard H. Finnell
- Department of Nutritional Sciences, Dell Paediatric Research Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - Ana M. Aransay
- CIC bioGUNE, Parque Tecnologico de Bizkaia, Building 801-A, 48160 Derio, Spain
- CIBERehd, ISCIII, 28029 Madrid, Spain
- Correspondence: ; Tel.: +34-944-061-325 or +34-946-572-524; Fax: +34-946-572-530
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Genetic Variants in Folate and Cobalamin Metabolism-Related Genes in Pregnant Women of a Homogeneous Spanish Population: The Need for Revisiting the Current Vitamin Supplementation Strategies. Nutrients 2022; 14:nu14132702. [PMID: 35807880 PMCID: PMC9268853 DOI: 10.3390/nu14132702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/23/2022] [Accepted: 06/27/2022] [Indexed: 02/05/2023] Open
Abstract
Polymorphisms of genes involved in the metabolism and transport of folate and cobalamin could play relevant roles in pregnancy outcomes. This study assessed the prevalence of genetic polymorphisms of folate and cobalamin metabolism-related genes such as MTHFR, MTR, CUBN, and SLC19A1 in pregnant women of a homogeneous Spanish population according to conception, pregnancy, delivery, and newborns complications. This study was conducted on 149 nulliparous women with singleton pregnancies. Sociodemographic and obstetrics variables were recorded, and all patients were genotyped in the MTHFR, MTR, CUBN, and SLC10A1 polymorphisms. The distribution of genotypes detected in this cohort was similar to the population distribution reported in Europe, highlighting that more than 50% of women were carriers of risk alleles of the studied genes. In women with the MTHFR risk allele, there was a statistically significant higher frequency of assisted fertilisation and a higher frequency of preeclampsia and preterm birth. Moreover, CUBN (rs1801222) polymorphism carriers showed a statistically significantly lower frequency of complications during delivery. In conclusion, the prevalence of genetic variants related to folic acid and vitamin B12 metabolic genes in pregnant women is related to mother and neonatal outcomes. Knowing the prevalence of these polymorphisms may lead to a personalised prescription of vitamin intake.
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