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SUMO1 modification stabilizes TET3 protein and increases colorectal cancer radiotherapy sensitivity
CONCLUSIONS: we elucidated the sensitizing role of TET3 protein in the radiation of CRC cells, depending on SUMO1 modification of TET3 at the lysine sites (K479, K758, K1012, K1188, K1397, K1623), in turn stabilizing TET3 expression in the nucleus and subsequently increasing the sensitivity of colorectal cancer to radiotherapy. Together, this study highlights the potentially critical role of TET3 SUMOylation in radiation regulation, which may contribute to an enhanced understanding of the relationship between DNA demethylation and radiotherapy.PMID:37244630 | DOI:10.1016/j.ijrobp.2023.05.037
Source: Health Physics - May 27, 2023 Category: Physics Authors: Fengting Liu Ya Ma Hao Sun Hui Cai Xin Liang Chang Xu Liqing Du Yan Wang Qiang Liu Source Type: research

Regulation of XPC Binding Dynamics and Global Nucleotide Excision Repair by p63 and Vitamin D Receptor
J Phys Chem B. 2023 Mar 6. doi: 10.1021/acs.jpcb.2c07257. Online ahead of print.ABSTRACTp63 and the vitamin D receptor (VDR) play important roles in epidermal development and differentiation, but their roles and relationship in the response to ultraviolet (UV) radiation are less clear. Using TERT-immortalized human keratinocytes expressing shRNA targeting p63 in concert with exogenously applied siRNA targeting VDR, we assessed p63 and VDR's separate and combined effect on nucleotide excision repair (NER) of UV-induced 6-4 photoproducts (6-4PP). Knockdown of p63 reduced VDR and XPC expression relative to nontargeting contro...
Source: Health Physics - March 6, 2023 Category: Physics Authors: Christian T Wong Katherine Ona Dennis H Oh Source Type: research