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DNA damage and repair following traumatic brain injury

期刊

NEUROBIOLOGY OF DISEASE
卷 147, 期 -, 页码 -

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.nbd.2020.105143

关键词

TBI; Nucleobase modification; DNA strand break; DNA fragmentation; DNA repair

资金

  1. VA Merit Review Grant [I01BX004344]

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The study explores the mechanisms of DNA damage and repair induced by TBI, and discusses potential experimental therapies targeting DNA repair process members for improved outcomes following TBI.
Traumatic brain injury (TBI) is known to promote significant DNA damage irrespective of age, sex, and species. Chemical as well as structural DNA modification start within minutes and persist for days after TBI. Although several DNA repair pathways are induced following TBI, the simultaneous downregulation of some of the genes and proteins of these pathways leads to an aberrant overall DNA repair process. In many instances, DNA damages escape even the most robust repair mechanisms, especially when the repair process becomes overwhelmed or becomes inefficient by severe or repeated injuries. The persisting DNA damage and/or lack of DNA repair contributes to long-term functional deficits. In this review, we discuss the mechanisms of TBI-induced DNA damage and repair. We further discussed the putative experimental therapies that target the members of the DNA repair process for improved outcome following TBI.

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