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Cheng K, Chahdi A, Larabee SM, Tolaymat M, Sundel MH, Drachenberg CB, Zhan M, Hu S, Said AH, Shang AC, Xie G, Alizadeh M, Moura NS, Bafford AC, Williams RT, Hanna NN, Raufman JP. Muscarinic receptor agonist-induced βPix binding to β-catenin promotes colon neoplasia. Sci Rep 2023; 13:16920. [PMID: 37805544 PMCID: PMC10560271 DOI: 10.1038/s41598-023-44158-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 10/04/2023] [Indexed: 10/09/2023] Open
Abstract
M3 muscarinic receptors (M3R) modulate β-catenin signaling and colon neoplasia. CDC42/RAC guanine nucleotide exchange factor, βPix, binds to β-catenin in colon cancer cells, augmenting β-catenin transcriptional activity. Using in silico, in vitro, and in vivo approaches, we explored whether these actions are regulated by M3R. At the invasive fronts of murine and human colon cancers, we detected co-localized nuclear expression of βPix and β-catenin in stem cells overexpressing M3R. Using immunohistochemistry, immunoprecipitation, proximity ligand, and fluorescent cell sorting assays in human tissues and established and primary human colon cancer cell cultures, we detected time-dependent M3R agonist-induced cytoplasmic and nuclear association of βPix with β-catenin. βPix knockdown attenuated M3R agonist-induced human colon cancer cell proliferation, migration, invasion, and expression of PTGS2, the gene encoding cyclooxygenase-2, a key player in colon neoplasia. Overexpressing βPix dose-dependently augmented β-catenin binding to the transcription factor TCF4. In a murine model of sporadic colon cancer, advanced neoplasia was attenuated in conditional knockout mice with intestinal epithelial cell deficiency of βPix. Expression levels of β-catenin target genes and proteins relevant to colon neoplasia, including c-Myc and Ptgs2, were reduced in colon tumors from βPix-deficient conditional knockout mice. Targeting the M3R/βPix/β-catenin axis may have therapeutic potential.
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Affiliation(s)
- Kunrong Cheng
- VA Maryland Healthcare System, Baltimore, MD, 21201, USA
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Ahmed Chahdi
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Shannon M Larabee
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Mazen Tolaymat
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Margaret H Sundel
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Cinthia B Drachenberg
- Department of Pathology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Min Zhan
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Shien Hu
- VA Maryland Healthcare System, Baltimore, MD, 21201, USA
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Anan H Said
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Aaron C Shang
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Guofeng Xie
- VA Maryland Healthcare System, Baltimore, MD, 21201, USA
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
- Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Madeline Alizadeh
- The Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, 20201, USA
| | - Natalia Sampaio Moura
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Andrea C Bafford
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Richelle T Williams
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
- Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Nader N Hanna
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
- Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Jean-Pierre Raufman
- VA Maryland Healthcare System, Baltimore, MD, 21201, USA.
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA.
- Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD, 21201, USA.
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA.
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