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Moore BD, Jin RU, Osaki L, Romero-Gallo J, Noto J, Peek RM, Mills JC. Identification of alanyl aminopeptidase (CD13) as a surface marker for isolation of mature gastric zymogenic chief cells. Am J Physiol Gastrointest Liver Physiol 2015; 309:G955-64. [PMID: 26514774 PMCID: PMC4683299 DOI: 10.1152/ajpgi.00261.2015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 10/07/2015] [Indexed: 01/31/2023]
Abstract
Injury and inflammation in the gastric epithelium can cause disruption of the pathways that guide the differentiation of cell lineages, which in turn can cause persistent alterations in differentiation patterns, known as metaplasia. Metaplasia that occurs in the stomach is associated with increased risk for cancer. Methods for isolating distinct gastric epithelial cell populations would facilitate dissection of the molecular and cellular pathways that guide normal and metaplastic differentiation. Here, we identify alanyl aminopeptidase (CD13) as a specific surface marker of zymogenic chief cells (ZCs) in the gastric epithelium. We show that 1) among gastric epithelial cells alanyl aminopeptidase expression is confined to mature ZCs, and 2) its expression is lost en route to metaplasia in both mouse and human stomachs. With this new marker coupled with new techniques that we introduce for dissociating gastric epithelial cells and overcoming their constitutive autofluorescence, we are able to reliably isolate enriched populations of ZCs for both molecular analysis and for the establishment of ZC-derived ex vivo gastroid cultures.
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Affiliation(s)
- Benjamin D. Moore
- 1Division of Gastroenterology, Departments of Medicine, Pathology, and Immunology, and Developmental Biology, Washington University, St. Louis, Missouri;
| | - Ramon U. Jin
- 1Division of Gastroenterology, Departments of Medicine, Pathology, and Immunology, and Developmental Biology, Washington University, St. Louis, Missouri;
| | - Luciana Osaki
- 1Division of Gastroenterology, Departments of Medicine, Pathology, and Immunology, and Developmental Biology, Washington University, St. Louis, Missouri;
| | - Judith Romero-Gallo
- 2Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Jennifer Noto
- 2Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Richard M. Peek
- 2Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Jason C. Mills
- 1Division of Gastroenterology, Departments of Medicine, Pathology, and Immunology, and Developmental Biology, Washington University, St. Louis, Missouri;
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