Age dependent 6KB deletion in human liver mitochondrial DNA

T. C. Yen, C. Y. Pang, R. H. Hsieh, C. H. Su, K. L. King, Y. H. Wei

Research output: Contribution to journalArticle

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Abstract

Using PCR technique, restriction mapping and DNA sequencing, we analyzed liver mitochondrial DNA (mtDNA) of 2 stillborn babies and 62 Chinese subjects with non-liver disease from 27 to 86 years old. The results showed an age-dependent 6,063 bp deletion in the liver mtDNA of older subjects. We found a TAACAGAC sequence flanking the 5'-end breakpoint at 7,842 nucleotide position and an imperfect repeat sequence CAACATAC flanking the 3'-end breakpoint at 13,905 nucleotide position. The incidence of the deleted mtDNA was found to increase with age. The deleted mtDNA was not detected in the liver of the stillbirth or blood cells of all the subjects. This is the first account that an age-related 6,063 bp deletion occurs in the liver mtDNA of old humans. The occurrence of this and previously reported 4,977 bp deletions is consistent with our recent finding that liver mitochondrial respiratory functions decline with age and support the hypothesis that continuous accumulation of mtDNA mutations is an important contributor to ageing process in the human.

Original languageEnglish
Pages (from-to)457-468
Number of pages12
JournalBiochemistry International
Volume26
Issue number3
Publication statusPublished - 1992
Externally publishedYes

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Mitochondrial DNA
Liver
Nucleotides
Restriction Mapping
Stillbirth
Terminal Repeat Sequences
5' Flanking Region
DNA Sequence Analysis
Blood Cells
Blood
Aging of materials
Cells
Polymerase Chain Reaction
Mutation
DNA
Incidence

ASJC Scopus subject areas

  • Biochemistry

Cite this

Yen, T. C., Pang, C. Y., Hsieh, R. H., Su, C. H., King, K. L., & Wei, Y. H. (1992). Age dependent 6KB deletion in human liver mitochondrial DNA. Biochemistry International, 26(3), 457-468.

Age dependent 6KB deletion in human liver mitochondrial DNA. / Yen, T. C.; Pang, C. Y.; Hsieh, R. H.; Su, C. H.; King, K. L.; Wei, Y. H.

In: Biochemistry International, Vol. 26, No. 3, 1992, p. 457-468.

Research output: Contribution to journalArticle

Yen, TC, Pang, CY, Hsieh, RH, Su, CH, King, KL & Wei, YH 1992, 'Age dependent 6KB deletion in human liver mitochondrial DNA', Biochemistry International, vol. 26, no. 3, pp. 457-468.
Yen TC, Pang CY, Hsieh RH, Su CH, King KL, Wei YH. Age dependent 6KB deletion in human liver mitochondrial DNA. Biochemistry International. 1992;26(3):457-468.
Yen, T. C. ; Pang, C. Y. ; Hsieh, R. H. ; Su, C. H. ; King, K. L. ; Wei, Y. H. / Age dependent 6KB deletion in human liver mitochondrial DNA. In: Biochemistry International. 1992 ; Vol. 26, No. 3. pp. 457-468.
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