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Instability at Trinucleotide Repeat DNAs

Abstract Details

2016, Master of Science (MS), Wright State University, Biochemistry and Molecular Biology.
Trinucleotide repeats (TNRs) are sequences prone to formation of non-B DNA structures and mutations; undergo expansions in vivo to cause various inherited neurodegenerative diseases. Hairpin structures formed during DNA replication or repair can cause replication fork stalling and if left unrepaired could cause single or double strand DNA breaks. To test and study this hypothesis we have devised a novel two color marker gene assay to detect DNA breaks at TNRs. By inducing replication stress our results show that TNRs are prone to DNA strand breaks and it is dependent on the repeat tract length. Double strand breaks at structured DNA are repaired differently than `clean’ DSBs. The cells which undergo breaks die off, possibly due to inability to repair breaks. Translesion polymerases help tolerate DNA damage at TNR region.
Michael Leffak, Ph.D. (Advisor)
John Paietta, Ph.D. (Committee Member)
Michael Markey, Ph.D. (Committee Member)
108 p.

Recommended Citations

Citations

  • Gadgil, R. Y. (2016). Instability at Trinucleotide Repeat DNAs [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1472231204

    APA Style (7th edition)

  • Gadgil, Rujuta Yashodhan. Instability at Trinucleotide Repeat DNAs. 2016. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1472231204.

    MLA Style (8th edition)

  • Gadgil, Rujuta Yashodhan. "Instability at Trinucleotide Repeat DNAs." Master's thesis, Wright State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1472231204

    Chicago Manual of Style (17th edition)