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Liu S, Zhang P, Wu Y, Zhou H, Wu H, Jin Y, Wu D, Wu G. SLC25A19 is a novel prognostic biomarker related to immune invasion and ferroptosis in HCC. Int Immunopharmacol 2024; 136:112367. [PMID: 38823177 DOI: 10.1016/j.intimp.2024.112367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/23/2024] [Accepted: 05/27/2024] [Indexed: 06/03/2024]
Abstract
SLC25A19 is a mitochondrial thiamine pyrophosphate (TPP) carrier that mediates TPP entry into the mitochondria. SLC25A19 has been recognized to play a crucial role in many metabolic diseases, but its role in cancer has not been clearly reported. Based on clinical data from The Cancer Genome Atlas (TCGA), the following parameters were analyzed among HCC patients: SLC25A19 expression, enrichment analyses, immune infiltration, ferroptosis and prognosis analyses. In vitro, the SLC25A19 high expression was validated by qRT-PCR and Immunohistochemistry. Subsequently, a series of cell function experiments, including CCK8, EdU, clone formation, trans-well and scratch assays, were conducted to illustrate the effect of SLC25A19 on the growth and metastasis of cancer cells. Meanwhile, indicators related to ferroptosis were also detected. SCL25A19 is highly expressed in HCC and predicts a poor prognosis. Elevated SLC25A19 expression in HCC patients was markedly associated with T stage, pathological status (PS), tumor status (TS), histologic grade (HG), and AFP. Our results indicate that SLC25A19 has a generally good prognosis predictive and diagnostic ability. The results of gene enrichment analyses showed that SLC25A19 is significantly correlated with immune infiltration, fatty acid metabolism, and ferroptosis marker genes. In vitro experiments have confirmed that silencing SLC25A19 can significantly inhibit the proliferation and migration ability of cancer cells and induce ferroptosis in HCC. In conclusion, these findings indicate that SLC25A19 is novel prognostic biomarker related to immune invasion and ferroptosis in HCC, and it is an excellent candidate for therapeutic target against HCC.
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Affiliation(s)
- Shiqi Liu
- Hepatobiliary Surgery Department, First Hospital of China Medical, University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning, Province, PR China; Key Laboratory of General Surgery of Liaoning Province, the First Affiliated Hospital of China Medical University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning Province, PR China
| | - Pengjie Zhang
- Hepatobiliary Surgery Department, First Hospital of China Medical, University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning, Province, PR China; Key Laboratory of General Surgery of Liaoning Province, the First Affiliated Hospital of China Medical University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning Province, PR China
| | - Yubo Wu
- Hepatobiliary Surgery Department, First Hospital of China Medical, University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning, Province, PR China; Key Laboratory of General Surgery of Liaoning Province, the First Affiliated Hospital of China Medical University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning Province, PR China
| | - Haonan Zhou
- Hepatobiliary Surgery Department, First Hospital of China Medical, University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning, Province, PR China; Key Laboratory of General Surgery of Liaoning Province, the First Affiliated Hospital of China Medical University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning Province, PR China
| | - Haomin Wu
- Hepatobiliary Surgery Department, First Hospital of China Medical, University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning, Province, PR China; Key Laboratory of General Surgery of Liaoning Province, the First Affiliated Hospital of China Medical University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning Province, PR China
| | - Yifan Jin
- Hepatobiliary Surgery Department, First Hospital of China Medical, University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning, Province, PR China; Key Laboratory of General Surgery of Liaoning Province, the First Affiliated Hospital of China Medical University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning Province, PR China
| | - Di Wu
- Hepatobiliary Surgery Department, First Hospital of China Medical, University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning, Province, PR China; Key Laboratory of General Surgery of Liaoning Province, the First Affiliated Hospital of China Medical University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning Province, PR China
| | - Gang Wu
- Hepatobiliary Surgery Department, First Hospital of China Medical, University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning, Province, PR China; Key Laboratory of General Surgery of Liaoning Province, the First Affiliated Hospital of China Medical University, No.155, Nanjingbei Street, 110001 Shenyang, Liaoning Province, PR China.
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Gouiza I, Hechmi M, Zioudi A, Dallali H, Kheriji N, Charif M, Le Mao M, Galai S, Kraoua L, Ben Youssef-Turki I, Kraoua I, Lenaers G, Kefi R. Expanding the genetic spectrum of mitochondrial diseases in Tunisia: novel variants revealed by whole-exome sequencing. Front Genet 2024; 14:1259826. [PMID: 38283147 PMCID: PMC10811255 DOI: 10.3389/fgene.2023.1259826] [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: 07/16/2023] [Accepted: 12/22/2023] [Indexed: 01/30/2024] Open
Abstract
Introduction: Inherited mitochondrial diseases are the most common group of metabolic disorders caused by a defect in oxidative phosphorylation. They are characterized by a wide clinical and genetic spectrum and can manifest at any age. In this study, we established novel phenotype-genotype correlations between the clinical and molecular features of a cohort of Tunisian patients with mitochondrial diseases. Materials and methods: Whole-exome sequencing was performed on five Tunisian patients with suspected mitochondrial diseases. Then, a combination of filtering and bioinformatics prediction tools was utilized to assess the pathogenicity of genetic variations. Sanger sequencing was subsequently performed to confirm the presence of potential deleterious variants in the patients and verify their segregation within families. Structural modeling was conducted to study the effect of novel variants on the protein structure. Results: We identified two novel homozygous variants in NDUFAF5 (c.827G>C; p.Arg276Pro) and FASTKD2 (c.496_497del; p.Leu166GlufsTer2) associated with a severe clinical form of Leigh and Leigh-like syndromes, respectively. Our results further disclosed two variants unreported in North Africa, in GFM2 (c.569G>A; p.Arg190Gln) and FOXRED1 (c.1261G>A; p.Val421Met) genes, and we described the first case of fumaric aciduria in a Tunisian patient harboring the c.1358T>C; p.Leu453Pro FH variant. Conclusion: Our study expands the mutational and phenotypic spectrum of mitochondrial diseases in Tunisia and highlights the importance of next-generation sequencing to decipher the pathomolecular mechanisms responsible for these disorders in an admixed population.
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Affiliation(s)
- Ismail Gouiza
- University of Angers, MitoLab Team, Unité MitoVasc, UMR CNRS (Unité mixte de recherche Centre national de la recherche scientifique) 6015 INSERM (Institut national de la santé et de la recherche médicale) U1083, SFR ICAT, University of Angers, Angers, France
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, Tunis, Tunisia
- Tunis El Manar University, Tunis, Tunisia
- Faculty of Medicine of Tunis, Tunis, Tunisia
| | - Meriem Hechmi
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, Tunis, Tunisia
- Tunis El Manar University, Tunis, Tunisia
| | - Abir Zioudi
- Tunis El Manar University, Tunis, Tunisia
- Faculty of Medicine of Tunis, Tunis, Tunisia
- Research Laboratory LR18SP04, Department of Child and Adolescent Neurology, National Institute Mongi Ben Hmida of Neurology, Tunis, Tunisia
| | - Hamza Dallali
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, Tunis, Tunisia
- Tunis El Manar University, Tunis, Tunisia
| | - Nadia Kheriji
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, Tunis, Tunisia
- Tunis El Manar University, Tunis, Tunisia
- Faculty of Medicine of Tunis, Tunis, Tunisia
| | - Majida Charif
- Genetics and Immuno-Cell Therapy Team, Mohammed First University, Oujda, Morocco
| | - Morgane Le Mao
- University of Angers, MitoLab Team, Unité MitoVasc, UMR CNRS (Unité mixte de recherche Centre national de la recherche scientifique) 6015 INSERM (Institut national de la santé et de la recherche médicale) U1083, SFR ICAT, University of Angers, Angers, France
| | - Said Galai
- Faculty of Medicine of Tunis, Tunis, Tunisia
- Department of Clinical Biology, National Institute Mongi Ben Hmida of Neurology, Tunis, Tunisia
| | - Lilia Kraoua
- Tunis El Manar University, Tunis, Tunisia
- Department of Congenital and Hereditary Diseases, Charles Nicolle Hospital, Tunis, Tunisia
| | - Ilhem Ben Youssef-Turki
- Tunis El Manar University, Tunis, Tunisia
- Faculty of Medicine of Tunis, Tunis, Tunisia
- Research Laboratory LR18SP04, Department of Child and Adolescent Neurology, National Institute Mongi Ben Hmida of Neurology, Tunis, Tunisia
| | - Ichraf Kraoua
- Tunis El Manar University, Tunis, Tunisia
- Faculty of Medicine of Tunis, Tunis, Tunisia
- Research Laboratory LR18SP04, Department of Child and Adolescent Neurology, National Institute Mongi Ben Hmida of Neurology, Tunis, Tunisia
| | - Guy Lenaers
- University of Angers, MitoLab Team, Unité MitoVasc, UMR CNRS (Unité mixte de recherche Centre national de la recherche scientifique) 6015 INSERM (Institut national de la santé et de la recherche médicale) U1083, SFR ICAT, University of Angers, Angers, France
- Department of Neurology, CHU d’Angers, Angers, France
| | - Rym Kefi
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, Tunis, Tunisia
- Tunis El Manar University, Tunis, Tunisia
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Wang W, Lin L, Zhang Q, Yang J, Kamili E, Chu J, Li X, Yang S, Xu Y. Heteroplasmy and Individual Mitogene Pools: Characteristics and Potential Roles in Ecological Studies. BIOLOGY 2023; 12:1452. [PMID: 37998051 PMCID: PMC10669347 DOI: 10.3390/biology12111452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 11/09/2023] [Accepted: 11/15/2023] [Indexed: 11/25/2023]
Abstract
The mitochondrial genome (mitogenome or mtDNA), the extrachromosomal genome, is a multicopy circular DNA with high mutation rates due to replication and repair errors. A mitochondrion, cell, tissue, organ, or an individual body may hold multiple variants, both inherited and developed over a lifetime, which make up individual mitogene pools. This phenomenon is also called mtDNA heteroplasmy. MtDNA variants influence cellular and tissular functions and are consequently subjected to selection. Although it has long been recognized that only inheritable germline heteroplasmies have evolutionary significance, non-inheritable somatic heteroplasmies have been overlooked since they directly affect individual fitness and thus indirectly affect the fate of heritable germline variants. This review focuses on the characteristics, dynamics, and functions of mtDNA heteroplasmy and proposes the concept of individual mitogene pools to discuss individual genetic diversity from multiple angles. We provide a unique perspective on the relationship between individual genetic diversity and heritable genetic diversity and guide how the individual mitogene pool with novel genetic markers can be applied to ecological research.
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Affiliation(s)
| | | | | | | | | | | | | | - Shuhui Yang
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China; (W.W.); (L.L.); (Q.Z.); (J.Y.); (E.K.); (J.C.); (X.L.)
| | - Yanchun Xu
- College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China; (W.W.); (L.L.); (Q.Z.); (J.Y.); (E.K.); (J.C.); (X.L.)
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Felhi R, Sfaihi L, Charif M, Frikha F, Aoiadni N, Kamoun T, Lenaers G, Fakhfakh F. Vitamin B1 deficiency leads to high oxidative stress and mtDNA depletion caused by SLC19A3 mutation in consanguineous family with Leigh syndrome. Metab Brain Dis 2023; 38:2489-2497. [PMID: 37642897 DOI: 10.1007/s11011-023-01280-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 08/21/2023] [Indexed: 08/31/2023]
Abstract
Leigh syndrome (LS) and Leigh-like spectrum are the most common infantile mitochondrial disorders characterized by heterogeneous neurologic and metabolic manifestations. Pathogenic variants in SLC carriers are frequently reported in LS given their important role in transporting various solutes across the blood-brain barrier. SLC19A3 (THTR2) is one of these carriers transporting vitamin-B1 (vitB1, thiamine) into the cell. Targeted NGS of nuclear genes involved in mitochondrial diseases was performed in a patient belonging to a consanguineous Tunisian family with LS and revealed a homozygous c.1264 A > G (p.T422A) variant in SLC19A3. Molecular docking revealed that the p.T422A aa change is located at a key position interacting with vitB1 and causes conformational changes compromising vitB1 import. We further disclosed decreased plasma antioxidant activities of CAT, SOD and GSH enzymes, and a 42% decrease of the mtDNA copy number in patient blood.Altogether, our results disclose that the c.1264 A > G (p.T422A) variant in SLC19A3 affects vitB1 transport, induces a mtDNA depletion and reduces the expression level of oxidative stress enzymes, altogether contributing to the LS phenotype of the patient.
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Affiliation(s)
- Rahma Felhi
- Molecular and Functional Genetics Laboratory, Faculty of Science of Sfax, University of Sfax, Route Soukra. Km 3., Sfax, Tunisia.
| | - Lamia Sfaihi
- Departments of Pediatry, University Hospital Hedi Chaker, Sfax, Tunisia
| | - Majida Charif
- Genetics and Immuno-Cell Therapy Team, Mohammed First University, Oujda, Morocco
| | - Fakher Frikha
- Laboratory of Molecular and Cellular Screening Processes, Center of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Nissaf Aoiadni
- Laboratory of Animal Eco-Physiology, Faculty of Sciences of Sfax, Sfax, Tunisia
| | - Thouraya Kamoun
- Departments of Pediatry, University Hospital Hedi Chaker, Sfax, Tunisia
| | - Guy Lenaers
- Université d'Angers, Unité MitoVasc, INSERM U1083, CNRS 6015, SFR- ICAT, Equipe MitoLab, 49933, Angers, France
- Service de Neurologie, CHU d'Angers, 49100, Angers, France
| | - Faiza Fakhfakh
- Molecular and Functional Genetics Laboratory, Faculty of Science of Sfax, University of Sfax, Route Soukra. Km 3., Sfax, Tunisia
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