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C9orf72扩增损害ATM介导的染色体断裂修复
Summary
1.Expression of C9orf72 expansions leads to R-loop-driven DSBs and cellular toxicity.
2.Expression of C9orf72 expansions leads to defective ATM activation.
3. Expression of C9orf72 expansions leads to defective ATM signaling.
4.The expression of C9orf72 expansions in the murine CNS leads to DSBs, nuclear HDAC4 and neurodegeneration.
5. Defective ATM-mediated DNA repair can be restored by RNF168 overexpression or P62 depletion.
6.Postmortem spinal cord motor neurons from C9orf72 ALS patients show elevated levels of R-loops, DSBs and nuclear HDAC4.
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