Atsushi Tajima | Kanazawa University (original) (raw)
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Central Research Institute for Dryland Agriculture
Universidad Nacional de Colombia (National University of Colombia)
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Papers by Atsushi Tajima
Frontiers in Nutrition, Feb 22, 2021
Journal of Medical Genetics, Feb 16, 2018
International Journal of Environmental Research and Public Health, Aug 10, 2022
BMC Endocrine Disorders, Feb 15, 2022
Applied sciences, Sep 6, 2022
Scientific Reports, Apr 16, 2021
Journal of Dental Research, Jan 24, 2020
Journal of Diabetes Investigation, Oct 26, 2018
Journal of Nutritional Science, 2022
Haematologica, May 21, 2020
Haematologica, Mar 19, 2019
Journal of Affective Disorders Reports
Scientific reports, Jan 27, 2018
Mitochondrial DNA (mtDNA) mutations are found in many types of cancers and suspected to be involv... more Mitochondrial DNA (mtDNA) mutations are found in many types of cancers and suspected to be involved in carcinogenesis, although the mechanism has not been elucidated. In this study, we report that consecutive C-to-T mutations (hypermutations), a unique feature of mutations induced by APOBECs, are found in mtDNA from cervical dysplasia and oropharyngeal cancers. In vitro, we found that APOBEC3A (A3A) and 3B (A3B) expression, as well as mtDNA hypermutation, were induced in a cervical dysplastic cell line W12 when cultured in a differentiating condition. The ectopic expression of A3A or A3B was sufficient to hypermutate mtDNA. Fractionation of W12 cell lysates and immunocytochemical analysis revealed that A3A and A3B could be contained in mitochondrion. These results suggest that mtDNA hypermutation is induced upon keratinocyte differentiation, and shed light on its molecular mechanism, which involves A3s. The possible involvement of mtDNA hypermutations in carcinogenesis is also discu...
Frontiers in Nutrition, Feb 22, 2021
Journal of Medical Genetics, Feb 16, 2018
International Journal of Environmental Research and Public Health, Aug 10, 2022
BMC Endocrine Disorders, Feb 15, 2022
Applied sciences, Sep 6, 2022
Scientific Reports, Apr 16, 2021
Journal of Dental Research, Jan 24, 2020
Journal of Diabetes Investigation, Oct 26, 2018
Journal of Nutritional Science, 2022
Haematologica, May 21, 2020
Haematologica, Mar 19, 2019
Journal of Affective Disorders Reports
Scientific reports, Jan 27, 2018
Mitochondrial DNA (mtDNA) mutations are found in many types of cancers and suspected to be involv... more Mitochondrial DNA (mtDNA) mutations are found in many types of cancers and suspected to be involved in carcinogenesis, although the mechanism has not been elucidated. In this study, we report that consecutive C-to-T mutations (hypermutations), a unique feature of mutations induced by APOBECs, are found in mtDNA from cervical dysplasia and oropharyngeal cancers. In vitro, we found that APOBEC3A (A3A) and 3B (A3B) expression, as well as mtDNA hypermutation, were induced in a cervical dysplastic cell line W12 when cultured in a differentiating condition. The ectopic expression of A3A or A3B was sufficient to hypermutate mtDNA. Fractionation of W12 cell lysates and immunocytochemical analysis revealed that A3A and A3B could be contained in mitochondrion. These results suggest that mtDNA hypermutation is induced upon keratinocyte differentiation, and shed light on its molecular mechanism, which involves A3s. The possible involvement of mtDNA hypermutations in carcinogenesis is also discu...