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Martin S, Scorzoni S, Cordone S, Mazzagatti A, Beznoussenko GV, Gunn AL, Di Bona M, Eliezer Y, Leor G, Ben-Yishay T, Loffreda A, Cancila V, Rainone MC, Ippolito MR, Martis V, Bedin F, Garrè M, Vaites LP, Vasapolli P, Polo S, Parazzoli D, Tripodo C, Mironov AA, Cuomo A, Ben-David U, Bakhoum SF, Hatch EM, Ly P, Santaguida S. A p62-dependent rheostat dictates micronuclei catastrophe and chromosome rearrangements. Science 2024; 385:eadj7446. [PMID: 39208097 DOI: 10.1126/science.adj7446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 04/29/2024] [Accepted: 07/05/2024] [Indexed: 09/04/2024]
Abstract
Chromosomal instability (CIN) generates micronuclei-aberrant extranuclear structures that catalyze the acquisition of complex chromosomal rearrangements present in cancer. Micronuclei are characterized by persistent DNA damage and catastrophic nuclear envelope collapse, which exposes DNA to the cytoplasm. We found that the autophagic receptor p62/SQSTM1 modulates micronuclear stability, influencing chromosome fragmentation and rearrangements. Mechanistically, proximity of micronuclei to mitochondria led to oxidation-driven homo-oligomerization of p62, limiting endosomal sorting complex required for transport (ESCRT)-dependent micronuclear envelope repair by triggering autophagic degradation. We also found that p62 levels correlate with increased chromothripsis across human cancer cell lines and with increased CIN in colorectal tumors. Thus, p62 acts as a regulator of micronuclei and may serve as a prognostic marker for tumors with high CIN.
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Affiliation(s)
- Sara Martin
- Department of Experimental Oncology at IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Simone Scorzoni
- Department of Experimental Oncology at IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Sara Cordone
- Department of Experimental Oncology at IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Alice Mazzagatti
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | | | - Amanda L Gunn
- Division of Basic Sciences and Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Melody Di Bona
- Human Oncology and Pathogenesis Program and Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Yonatan Eliezer
- Department of Human Molecular Genetics and Biochemistry, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Gil Leor
- Department of Human Molecular Genetics and Biochemistry, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Tal Ben-Yishay
- Department of Human Molecular Genetics and Biochemistry, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
- The Blavatnik School of Computer Science, Tel Aviv University, Tel Aviv, Israel
| | - Alessia Loffreda
- Experimental Imaging Center, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Valeria Cancila
- Tumor Immunology Unit, Department of Sciences for Health Promotion and Mother-Child Care "G. D'Alessandro," University of Palermo, Palermo, Italy
| | - Maria Chiara Rainone
- Department of Experimental Oncology at IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Marica Rosaria Ippolito
- Department of Experimental Oncology at IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Valentino Martis
- Department of Experimental Oncology at IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Fabio Bedin
- Department of Experimental Oncology at IEO, European Institute of Oncology IRCCS, Milan, Italy
| | | | | | - Paolo Vasapolli
- Department of Experimental Oncology at IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Simona Polo
- IFOM ETS, The AIRC Institute of Molecular Oncology, Milan, Italy
- Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
| | - Dario Parazzoli
- IFOM ETS, The AIRC Institute of Molecular Oncology, Milan, Italy
| | - Claudio Tripodo
- IFOM ETS, The AIRC Institute of Molecular Oncology, Milan, Italy
- Tumor Immunology Unit, Department of Sciences for Health Promotion and Mother-Child Care "G. D'Alessandro," University of Palermo, Palermo, Italy
| | | | - Alessandro Cuomo
- Department of Experimental Oncology at IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Uri Ben-David
- Department of Human Molecular Genetics and Biochemistry, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Samuel F Bakhoum
- Human Oncology and Pathogenesis Program and Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Emily M Hatch
- Division of Basic Sciences and Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Peter Ly
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Stefano Santaguida
- Department of Experimental Oncology at IEO, European Institute of Oncology IRCCS, Milan, Italy
- Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
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