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Yi Z, Wei S, Jin L, Jeyarajan S, Yang J, Gu Y, Kim HS, Schechter S, Lu S, Paulsen MT, Bedi K, Narayanan IV, Ljungman M, Crawford HC, Pasca di Magliano M, Ge K, Dou Y, Shi J. KDM6A Regulates Cell Plasticity and Pancreatic Cancer Progression by Noncanonical Activin Pathway. Cell Mol Gastroenterol Hepatol 2021; 13:643-667. [PMID: 34583087 PMCID: PMC8715196 DOI: 10.1016/j.jcmgh.2021.09.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 09/16/2021] [Accepted: 09/17/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Inactivating mutations of KDM6A, a histone demethylase, were frequently found in pancreatic ductal adenocarcinoma (PDAC). We investigated the role of KDM6A (lysine demethylase 6A) in PDAC development. METHODS We performed a pancreatic tissue microarray analysis of KDM6A protein levels. We used human PDAC cell lines for KDM6A knockout and knockdown experiments. We performed bromouridine sequencing analysis to elucidate the effects of KDM6A loss on global transcription. We performed studies with Ptf1aCre; LSL-KrasG12D; Trp53R172H/+; Kdm6afl/fl or fl/Y, Ptf1aCre; Kdm6afl/fl or fl/Y, and orthotopic xenograft mice to investigate the impacts of Kdm6a deficiency on pancreatic tumorigenesis and pancreatitis. RESULTS Loss of KDM6A was associated with metastasis in PDAC patients. Bromouridine sequencing analysis showed up-regulation of the epithelial-mesenchymal transition pathway in PDAC cells deficient in KDM6A. Loss of KDM6A promoted mesenchymal morphology, migration, and invasion in PDAC cells in vitro. Mechanistically, activin A and subsequent p38 activation likely mediated the role of KDM6A loss. Inhibiting either activin A or p38 reversed the effect. Pancreas-specific Kdm6a-knockout mice pancreata showed accelerated PDAC progression, developed a more aggressive undifferentiated type of PDAC, and increased metastases in the background of Kras and p53 mutations. Kdm6a-deficient pancreata in a pancreatitis model had a delayed recovery with increased PDAC precursor lesions compared with wild-type pancreata. CONCLUSIONS Loss of KDM6A accelerates PDAC progression and metastasis, most likely by a noncanonical p38-dependent activin A pathway. KDM6A also promotes pancreatic tissue recovery from pancreatitis. Activin A might be used as a therapeutic target for KDM6A-deficient PDACs.
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Affiliation(s)
- Zhujun Yi
- Department of Pathology & Clinical Labs, University of Michigan, Ann Arbor, Michigan,Xiangya Hospital, Central South University, Changsha, Hunan, People’s Republic of China
| | | | - Lin Jin
- Department of Pathology & Clinical Labs, University of Michigan, Ann Arbor, Michigan,Xiangya Hospital, Central South University, Changsha, Hunan, People’s Republic of China
| | - Sivakumar Jeyarajan
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan
| | - Jing Yang
- Department of Pathology & Clinical Labs, University of Michigan, Ann Arbor, Michigan
| | - Yumei Gu
- Department of Pathology & Clinical Labs, University of Michigan, Ann Arbor, Michigan
| | - Hong Sun Kim
- Department of Pathology & Clinical Labs, University of Michigan, Ann Arbor, Michigan
| | - Shula Schechter
- Department of Pathology & Clinical Labs, University of Michigan, Ann Arbor, Michigan
| | - Shuang Lu
- Department of Pathology & Clinical Labs, University of Michigan, Ann Arbor, Michigan,Xiangya Hospital, Central South University, Changsha, Hunan, People’s Republic of China
| | - Michelle T. Paulsen
- Department of Radiation Oncology, Center for RNA Biomedicine, University of Michigan, Ann Arbor, Michigan
| | - Karan Bedi
- Department of Radiation Oncology, Center for RNA Biomedicine, University of Michigan, Ann Arbor, Michigan
| | - Ishwarya Venkata Narayanan
- Department of Radiation Oncology, Center for RNA Biomedicine, University of Michigan, Ann Arbor, Michigan
| | - Mats Ljungman
- Department of Radiation Oncology, Center for RNA Biomedicine, University of Michigan, Ann Arbor, Michigan
| | | | - Marina Pasca di Magliano
- Department of Surgery, University of Michigan, Ann Arbor, Michigan,Rogel Cancer Center, University of Michigan, Ann Arbor, Michigan
| | - Kai Ge
- National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland
| | - Yali Dou
- Department of Medicine and Department of Biochemistry and Molecular Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Jiaqi Shi
- Department of Pathology & Clinical Labs, University of Michigan, Ann Arbor, Michigan,Rogel Cancer Center, University of Michigan, Ann Arbor, Michigan,Correspondence Address correspondence to: Jiaqi Shi, MD, PhD, Department of Pathology, University of Michigan, 2800 Plymouth Road, Building 35, Ann Arbor, Michigan 48109. fax: (734) 232-5360.
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