Spontaneous activity of the mitochondrial apoptosis pathway drives chromosomal defects, the appearance of micronuclei and cancer metastasis through the Caspase-Activated DNAse
Abstract: Micronuclei are DNA-containing structures separate from the nucleus found in cancer cells. Micronuclei are recognized by the immune sensor axis cGAS/STING, driving cancer metastasis. The mitochondrial apoptosis apparatus can be experimentally triggered to a non-apoptotic level, and this can drive the appearance of micronuclei through the Caspase-activated DNAse (CAD). We tested whether spontaneously appearing micronuclei in cancer cells are linked to sub-lethal apoptotic signals. Inhibition of mitochondrial apoptosis or of CAD reduced the number of micronuclei in tumor cell lines as well as the number of chromosomal misalignments in tumor cells and intestinal organoids. Blockade of mitochondrial apoptosis or deletion of CAD reduced, while experimental activation CAD, STING-dependently, enhanced aggressive growth of tumor cells in vitro. Deletion of CAD from human cancer cells reduced metastasis in xenograft models. CAD-deficient cells displayed a substantially altered gene-expression profile, and a CAD-associated gene expression ‘signature’ strongly predicted survival in cancer patients. Thus, low-level activity in the mitochondrial apoptosis apparatus operates through CAD-dependent gene-induction and STING-activation and has substantial impact on metastasis in cancer
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Anmerkungen
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Cell death & disease. - 13, 4 (2022) , 315, ISSN: 2041-4889
- Ereignis
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Veröffentlichung
- (wo)
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Freiburg
- (wer)
-
Universität
- (wann)
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2022
- Urheber
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Haimovici, Aladin
Höfer, Christoph
Badr, Mohamed Tarek
Bavafaye Haghighi, Elham
Amer, Tarek
Börries, Melanie
Bronsert, Peter
Glavynskyi, Ievgen
Fanfone, Deborah
Ichim, Gabriel
Thilmany, Nico
Weber, Arnim
Brummer, Tilman
Spohr, Corinna
Öllinger, Rupert
Janßen, Klaus-Peter
Rad, Roland
Häcker, Georg
- DOI
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10.1038/s41419-022-04768-y
- URN
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urn:nbn:de:bsz:25-freidok-2260945
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
-
15.08.2025, 07:20 MESZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Haimovici, Aladin
- Höfer, Christoph
- Badr, Mohamed Tarek
- Bavafaye Haghighi, Elham
- Amer, Tarek
- Börries, Melanie
- Bronsert, Peter
- Glavynskyi, Ievgen
- Fanfone, Deborah
- Ichim, Gabriel
- Thilmany, Nico
- Weber, Arnim
- Brummer, Tilman
- Spohr, Corinna
- Öllinger, Rupert
- Janßen, Klaus-Peter
- Rad, Roland
- Häcker, Georg
- Universität
Entstanden
- 2022
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