Going ape as an approach to cancer therapeutics.

Antioxidants & Redox Signaling
Aditi BapatMark R Kelley

Abstract

The DNA base excision repair (BER) pathway repairs alkylation and oxidative DNA damage caused by endogenous and exogenous agents, including chemotherapeutic agents. Upon removal of the damaged base AP endonuclease 1 (Ape1), a critical component of the pathway cleaves the abasic site to facilitate repair. Ape1 is a multifunctional protein which plays a role not only in DNA repair but it also functions as a reduction-oxidation factor, known as Ref-1 in the literature, to increase the DNA binding ability of several transcription factors involved in different growth signaling pathways. Elevated levels of Ape1 have been linked to resistance to chemotherapy, poor prognosis, and poor survival. Reducing the amount of Ape1 protein in cancer cells and tumors using RNA interference and anti-sense oligonucleotide technology sensitizes mammalian tumor cells to a variety of laboratory and chemotherapeutic agents. Therefore, selective inhibition of Ape1's DNA repair activity is a promising avenue to develop novel cancer therapeutics.

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Citations

Jul 26, 2012·Clinical and Experimental Medicine·Ana P Montaldi, Elza T Sakamoto-Hojo
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Methods Mentioned

BETA
glycosylases
dissect
antisense oligonucleotide

Software Mentioned

Ingenuity

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