title: Lineage development in a patient without goblet, paneth, and enteroendocrine cells: a clue for intestinal epithelial differentiation.
abstract: We report a patient who presented with severe enterocolitis and apparent absence of Paneth, goblet, and enteroendocrine lineages from the small bowel and colon. The absorptive enterocyte seemed to be normal morphologically and functionally. Because normal enterocytes were present, we hypothesized that this patient had a developmental block in the differentiation of a common stem cell precursor for Paneth, goblet, and neuroendocrine lineages. By using antibodies to protein markers of each cell line, including some that are expressed early in the differentiation process, we aimed to study lineage development in this patient. From our data, we surmise that there may be a two-step process in lineage commitment. The stem cell may commit to an absorptive cell or a granule-containing cell. The daughter cell that is committed to the granule lineage then further commits to a goblet, enteroendocrine, or Paneth cell lineage.
authors.affiliation: Department of Pediatrics, Bnai Zion Medical Center, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 31048. shaoul_r@012.net.il
authors.forename: Ron
authors.initials: R
authors.lastname: Shaoul
authors.forename: Don
authors.initials: D
authors.lastname: Hong
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Okada
authors.forename: Ernest
authors.initials: E
authors.lastname: Cutz
authors.forename: Margaret A
authors.initials: MA
authors.lastname: Marcon
mesh_terms: D000293:Adolescent; D019070:Cell Lineage; D019858:Enteroendocrine Cells / Q000166:cytology*; D005260:Female; D020397:Goblet Cells / Q000166:cytology*; D006801:Humans; D007150:Immunohistochemistry; D007413:Intestinal Mucosa / Q000166:cytology*; D019879:Paneth Cells / Q000166:cytology*