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mtDNA mutations increase tumorigenicity in prostate cancer

Open access
Petros, John A., Baumann, Amanda K., Ruiz-Pesini, Eduardo, Amin, Mahul B., Sun, Carrie Qi, Hall, John, Lim, SoDug, Issa, Muta M., Flanders, W. Dana, Hosseini, Seyed H., Marshall, Fray F., Wallace, Douglas C.·2005·Proceedings of the National Academy of Sciences

Abstract

Mutations in the mtDNA have been found to fulfill all of the criteria expected for pathogenic mutations causing prostate cancer. Focusing on the cytochrome oxidase subunit I (COI) gene, we found that 11–12% of all prostate cancer patients harbored COI mutations that altered conserved amino acids (mean conservation index = 83%), whereas <2% of no-cancer controls and 7.8% of the general population had COI mutations, the latter altering less conserved amino acids (conservation index = 71%). Four conserved prostate cancer COI mutations were found in multiple independent patients on different mtDNA backgrounds. Three other tumors contained heteroplasmic COI mutations, one of which created a stop codon. This latter tumor also contained a germ-line ATP6 mutation. Thus, both germ-line and somatic mtDNA mutations contribute to prostate cancer. Many tumors have been found to produce increased reactive oxygen species (ROS), and mtDNA mutations that inhibit oxidative phosphorylation can increase ROS production and thus contribute to tumorigenicity. To determine whether mutant tumors had increased ROS and tumor growth rates, we introduced the pathogenic mtDNA ATP6 T8993G mutation into the PC3 prostate cancer cell line through cybrid transfer and tested for tumor growth in nude mice. The resulting mutant (T8993G) cybrids were found to generate tumors that were 7 times larger than the wild-type (T8993T) cybrids, whereas the wild-type cybrids barely grew in the mice. The mutant tumors also generated significantly more ROS. Therefore, mtDNA mutations do play an important role in the etiology of prostate cancer.

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Metadata

Authors
Petros, J. A., Baumann, A. K., Ruiz-Pesini, E., Amin, M. B., Sun, C. Q., Hall, J., Lim, S., Issa, M. M., Flanders, W. D., Hosseini, S. H., Marshall, F. F., & Wallace, D. C.
Venue
Proceedings of the National Academy of Sciences
Published
2005-01-12
Volume
102
Issue
3
Pages
719-724
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2163069284
Cited by
836
References
43
FWCI
16.59
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: mtDNA mutations increase tumorigenicity in prostate cancer. https://app.cochat.ai/papers/10.1073/pnas.0408894102
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Petros, J. A., Baumann, A. K., Ruiz-Pesini, E., Amin, M. B., Sun, C. Q., Hall, J., Lim, S., Issa, M. M., Flanders, W. D., Hosseini, S. H., Marshall, F. F., & Wallace, D. C. (2005). mtDNA mutations increase tumorigenicity in prostate cancer. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0408894102

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