2020
DOI: 10.18632/aging.103984
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Caspase-3 knockout attenuates radiation-induced tumor repopulation via impairing the ATM/p53/Cox-2/PGE2 pathway in non-small cell lung cancer

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Cited by 19 publications
(33 citation statements)
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“…Recent studies reported that radiation-induced dying cancer cells stimulate tumour cell proliferation mainly through caspase 3-mediated signalling (13,28,29), but few reports have described chemotherapy-induced tumour cell repopulation. To address whether tumour repopulation might be involved in the low efficacy of gemcitabine against BDC, we performed conditioned medium transfer experiments, which have been reported to reflect cell-cell interactions (17)(18)(19).…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Recent studies reported that radiation-induced dying cancer cells stimulate tumour cell proliferation mainly through caspase 3-mediated signalling (13,28,29), but few reports have described chemotherapy-induced tumour cell repopulation. To address whether tumour repopulation might be involved in the low efficacy of gemcitabine against BDC, we performed conditioned medium transfer experiments, which have been reported to reflect cell-cell interactions (17)(18)(19).…”
Section: Discussionmentioning
confidence: 99%
“…This signal transduction cascade activates the release of mitogens including Wingless (analogue Wnt), Decapentaplegic (a member of the β-transforming growth factor family) and NOTCH, thus inducing compensatory proliferation (7,11,12). Although there is limited research on the molecular mechanism of dying cellmediated cell proliferation in human cancer, a recent study reported that caspase-3-mediated ataxia telangiectasia mutated (ATM)/TP53/cyclo-oxygenase-2/prostaglandin E 2 signalling contributes to radiation-induced tumour repopulation in nonsmall cell lung cancer cells (13). It is therefore highly likely that the caspase-TP53 axis is a key player in tumour repopulation following chemoradiotherapy.…”
mentioning
confidence: 99%
“…IR-induced DSBs’ triggering of ATM-dependent activation of transcription factors NF-κB and STAT3 driving tumor growth, and late-phase exosome biosynthesis and release (after caspase-3 cleavage of the pore-forming protein DFNA) may contribute to maintaining the viability of neighboring cells and promote anastasis [ 408 ]. The important role of caspase-3 was demonstrated by the fact that caspase-3 knockout considerably reduced IR-induced tumor repopulation by decreasing endoG release from mitochondria to nuclei and impairing the ATM/p53/Cox2/PGF 2 pathway in non-small cell lung cancer [ 409 ].…”
Section: Ionizing Radiation (Ir) Effects Involving Mitochondriamentioning
confidence: 99%
“…The phenomenon of anastasis is because damaged cells seek and take other secondary metabolic pathways trying to ensure cell survival. After low-LET photon exposures, some cells succeed in escaping from apoptosis by fission and fusion of mitochondria to reconstitute healthy mitochondria from partially damaged, dysfunctional mitochondria [ 408 , 409 ].…”
Section: Ionizing Radiation (Ir) Effects Involving Mitochondriamentioning
confidence: 99%
“…This overexpression was mostly associated with DNA degradation in the promoter/exon 1 regions of the endonuclease genes [133], although EndoG is also able to participate in alternative splicing of DNase I mRNA [134]. Interestingly, the overexpression of EndoG is important for the development of tumor progression, and the silencing of the EndoG gene contributes to the suppression of the proliferation of tumor cells [135,136].…”
Section: Intracellular Dnasesmentioning
confidence: 99%