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Fasano C, Lepore Signorile M, Di Nicola E, Pantaleo A, Forte G, De Marco K, Sanese P, Disciglio V, Grossi V, Simone C. The chromatin remodeling factors EP300 and TRRAP are novel SMYD3 interactors involved in the emerging 'nonmutational epigenetic reprogramming' cancer hallmark. Comput Struct Biotechnol J 2023; 21:5240-5248. [PMID: 37954147 PMCID: PMC10632561 DOI: 10.1016/j.csbj.2023.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 09/25/2023] [Accepted: 10/10/2023] [Indexed: 11/14/2023] Open
Abstract
SMDY3 is a histone-lysine N-methyltransferase involved in several oncogenic processes and is believed to play a major role in various cancer hallmarks. Recently, we identified ATM, BRCA2, CHK2, MTOR, BLM, MET, AMPK, and p130 as direct SMYD3 interactors by taking advantage of a library of rare tripeptides, which we first tested for their in vitro binding affinity to SMYD3 and then used as in silico probes to systematically search the human proteome. Here, we used this innovative approach to identify further SMYD3-interacting proteins involved in crucial cancer pathways and found that the chromatin remodeling factors EP300 and TRRAP interact directly with SMYD3, thus linking SMYD3 to the emerging 'nonmutational epigenetic reprogramming' cancer hallmark. Of note, we validated these interactions in gastrointestinal cancer cell lines, including HCT-116 cells, which harbor a C-terminal truncating mutation in EP300, suggesting that EP300 binds to SMYD3 via its N-terminal region. While additional studies are required to ascertain the functional mechanisms underlying these interactions and their significance, the identification of two novel SMYD3 interactors involved in epigenetic cancer hallmark pathways adds important pieces to the puzzle of how SMYD3 exerts its oncogenic role.
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Affiliation(s)
- Candida Fasano
- Medical Genetics, National Institute of Gastroenterology - IRCCS “Saverio de Bellis” Research Hospital, Castellana Grotte, 70013 Bari, Italy
| | - Martina Lepore Signorile
- Medical Genetics, National Institute of Gastroenterology - IRCCS “Saverio de Bellis” Research Hospital, Castellana Grotte, 70013 Bari, Italy
| | - Elisabetta Di Nicola
- Medical Genetics, National Institute of Gastroenterology - IRCCS “Saverio de Bellis” Research Hospital, Castellana Grotte, 70013 Bari, Italy
| | - Antonino Pantaleo
- Medical Genetics, National Institute of Gastroenterology - IRCCS “Saverio de Bellis” Research Hospital, Castellana Grotte, 70013 Bari, Italy
| | - Giovanna Forte
- Medical Genetics, National Institute of Gastroenterology - IRCCS “Saverio de Bellis” Research Hospital, Castellana Grotte, 70013 Bari, Italy
| | - Katia De Marco
- Medical Genetics, National Institute of Gastroenterology - IRCCS “Saverio de Bellis” Research Hospital, Castellana Grotte, 70013 Bari, Italy
| | - Paola Sanese
- Medical Genetics, National Institute of Gastroenterology - IRCCS “Saverio de Bellis” Research Hospital, Castellana Grotte, 70013 Bari, Italy
| | - Vittoria Disciglio
- Medical Genetics, National Institute of Gastroenterology - IRCCS “Saverio de Bellis” Research Hospital, Castellana Grotte, 70013 Bari, Italy
| | - Valentina Grossi
- Medical Genetics, National Institute of Gastroenterology - IRCCS “Saverio de Bellis” Research Hospital, Castellana Grotte, 70013 Bari, Italy
| | - Cristiano Simone
- Medical Genetics, National Institute of Gastroenterology - IRCCS “Saverio de Bellis” Research Hospital, Castellana Grotte, 70013 Bari, Italy
- Medical Genetics, Department of Precision and Regenerative Medicine and Jonic Area (DiMePRe-J), University of Bari Aldo Moro, 70124 Bari, Italy
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