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Variants in mitochondrial tRNA gene may not be associated with thyroid carcinoma
Thyroid cancer is a very common form of endocrine system malignancy. To date, the molecular mechanism underlying thyroid cancer remains poorly understood. Studies of oncocytic tumors have led to a hypothesis which proposes that defects in oxidative phosphorylation (OX- PHOS) may result in a compensa...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
De Gruyter
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5026273/ https://www.ncbi.nlm.nih.gov/pubmed/27785398 http://dx.doi.org/10.1515/bjmg-2015-0090 |
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author | Lv, F Qian, G You, W Lin, H Wang, XF Qiu, GS Jiang, YS Pang, LX Kang, YM Jia, BF Xu, JZ Yu, Y |
author_facet | Lv, F Qian, G You, W Lin, H Wang, XF Qiu, GS Jiang, YS Pang, LX Kang, YM Jia, BF Xu, JZ Yu, Y |
author_sort | Lv, F |
collection | PubMed |
description | Thyroid cancer is a very common form of endocrine system malignancy. To date, the molecular mechanism underlying thyroid cancer remains poorly understood. Studies of oncocytic tumors have led to a hypothesis which proposes that defects in oxidative phosphorylation (OX- PHOS) may result in a compensatory increase in mitochondrial replication and gene expression. As a result, mitochondrial DNA (mtDNA) mutation analysis has become a useful tool to explore the molecular basis of this disease. Among these mutations, mitochondrial transfer RNAs (mttRNAs) are the hot spots for pathogenic mutations associated with thyroid cancer. However, due to its high mutation rate, the role of mt-tRNA variants in thyroid cancer is still controversial. To address this problem, in this study, we reassessed seven reported mt-tRNA variants: tRNA(Asp) G7521A, tRNA(Arg) T10411C and T10463C, tRNA(Leu(CUN)) A12308G, tRNA(Ile) G4292C and C4312T, and tRNA(Ala) T5655C, in clinical manifestations of thyroid cancer. We first performed the phylogenetic conservation analysis for these variants; moreover, we used a bioinformatic tool to compare the minimum free energy (G) of mt-tRNA with and without mutations. Most strikingly, none of these variants caused the significant change of the G between the wild-type and the mutant form, suggesting that they may not play an important roles in thyroid cancer. In addition, we screened the frequency of the “pathogenic” A12308G alternation in 300 patients with thyroid cancer and 200 healthy controls. We found that there were five patients and three control subjects carrying this variant. It seemed that the A12308G variant may be a common polymorphism in the human population. Taken together, our study indicated that variants in mt-tRNA genes may not play active roles in patients with thyroid cancer. |
format | Online Article Text |
id | pubmed-5026273 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | De Gruyter |
record_format | MEDLINE/PubMed |
spelling | pubmed-50262732016-10-26 Variants in mitochondrial tRNA gene may not be associated with thyroid carcinoma Lv, F Qian, G You, W Lin, H Wang, XF Qiu, GS Jiang, YS Pang, LX Kang, YM Jia, BF Xu, JZ Yu, Y Balkan J Med Genet Original Article Thyroid cancer is a very common form of endocrine system malignancy. To date, the molecular mechanism underlying thyroid cancer remains poorly understood. Studies of oncocytic tumors have led to a hypothesis which proposes that defects in oxidative phosphorylation (OX- PHOS) may result in a compensatory increase in mitochondrial replication and gene expression. As a result, mitochondrial DNA (mtDNA) mutation analysis has become a useful tool to explore the molecular basis of this disease. Among these mutations, mitochondrial transfer RNAs (mttRNAs) are the hot spots for pathogenic mutations associated with thyroid cancer. However, due to its high mutation rate, the role of mt-tRNA variants in thyroid cancer is still controversial. To address this problem, in this study, we reassessed seven reported mt-tRNA variants: tRNA(Asp) G7521A, tRNA(Arg) T10411C and T10463C, tRNA(Leu(CUN)) A12308G, tRNA(Ile) G4292C and C4312T, and tRNA(Ala) T5655C, in clinical manifestations of thyroid cancer. We first performed the phylogenetic conservation analysis for these variants; moreover, we used a bioinformatic tool to compare the minimum free energy (G) of mt-tRNA with and without mutations. Most strikingly, none of these variants caused the significant change of the G between the wild-type and the mutant form, suggesting that they may not play an important roles in thyroid cancer. In addition, we screened the frequency of the “pathogenic” A12308G alternation in 300 patients with thyroid cancer and 200 healthy controls. We found that there were five patients and three control subjects carrying this variant. It seemed that the A12308G variant may be a common polymorphism in the human population. Taken together, our study indicated that variants in mt-tRNA genes may not play active roles in patients with thyroid cancer. De Gruyter 2016-07-09 /pmc/articles/PMC5026273/ /pubmed/27785398 http://dx.doi.org/10.1515/bjmg-2015-0090 Text en © 2016 Walter de Gruyter GmbH, Berlin/Boston |
spellingShingle | Original Article Lv, F Qian, G You, W Lin, H Wang, XF Qiu, GS Jiang, YS Pang, LX Kang, YM Jia, BF Xu, JZ Yu, Y Variants in mitochondrial tRNA gene may not be associated with thyroid carcinoma |
title | Variants in mitochondrial tRNA gene may not be associated with thyroid carcinoma |
title_full | Variants in mitochondrial tRNA gene may not be associated with thyroid carcinoma |
title_fullStr | Variants in mitochondrial tRNA gene may not be associated with thyroid carcinoma |
title_full_unstemmed | Variants in mitochondrial tRNA gene may not be associated with thyroid carcinoma |
title_short | Variants in mitochondrial tRNA gene may not be associated with thyroid carcinoma |
title_sort | variants in mitochondrial trna gene may not be associated with thyroid carcinoma |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5026273/ https://www.ncbi.nlm.nih.gov/pubmed/27785398 http://dx.doi.org/10.1515/bjmg-2015-0090 |
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