Cited by 53Pancreatic function and diabetesRegulation of Appetite and ObesityNeuropeptides and Animal Physiology

Energy Homeostasis and Gastrointestinal Endocrine Differentiation Do Not Require the Anorectic Hormone Peptide YY

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Schonhoff, Susan, Baggio, Laurie, Ratineau, Christelle, Ray, Subir K., Lindner, Jill, Magnuson, Mark A., Drucker, Daniel J., Leiter, Andrew B.·2005·Molecular and Cellular Biology

Abstract

The gastrointestinal hormone peptide YY is a potent inhibitor of food intake and is expressed early during differentiation of intestinal and pancreatic endocrine cells. In order to better understand the role of peptide YY in energy homeostasis and development, we created mice with a targeted deletion of the peptide YY gene. All intestinal and pancreatic endocrine cells developed normally in the absence of peptide YY with the exception of pancreatic polypeptide (PP) cells, indicating that peptide YY expression was not required for terminal differentiation. We used recombination-based cell lineage trace to determine if peptide YY cells were progenitors for gastrointestinal endocrine cells. Peptide YY(+) cells gave rise to all L-type enteroendocrine cells and to islet partial differential and PP cells. In the pancreas, approximately 40% of pancreatic alpha and rare beta cells arose from peptide YY(+) cells, suggesting that most beta cells and surprisingly the majority of alpha cells are not descendants of peptide YY(+)/glucagon-positive/insulin-positive cells that appear during early pancreagenesis. Despite the anorectic effects of exogenous peptide YY(3-36) following intraperitoneal administration, mice lacking peptide YY showed normal growth, food intake, energy expenditure, and responsiveness to peptide YY(3-36). These observations suggest that targeted disruption of the peptide YY gene does not perturb terminal endocrine cell differentiation or the control of food intake and energy homeostasis.

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Crossref · 10.1128/mcb.25.10.4189-4199.2005

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  • Deletion of Pyy in mice does not reveal any obvious defects in endoderm patterning.

    “Deletion of Pyy in mice does not reveal any obvious defects in endoderm patterning [46,47].”

    From A systematic screen for genes expressed in definitive endoderm by Serial Analysis of Gene Expression (SAGE) (2007) · cites this paper as [46]

    The Discussion reports that Pyy-null mice largely retain endocrine differentiation in the colon and pancreas, supporting a narrower finding about these endoderm-derived tissues. It also notes an exception for pancreatic PP cells. The paper does not establish that endoderm patterning overall is unaffected. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Genetic lineage tracing using Pyy-Cre and a ROSA26 reporter mouse strain demonstrated that in the adult, descendants of Pyy-expressing cells can contribute to the periphery of pancreatic islets and the L-type cells of the distal intestine.

    “However, genetic lineage tracing using Pyy-Cre and a ROSA26 reporter mouse strain demonstrated that in the adult, descendants of Pyy-expressing cells can contribute to the periphery of pancreatic islets and the L-type cells of the distal intestine [46].”

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Authors
Schonhoff, S., Baggio, L., Ratineau, C., Ray, S. K., Lindner, J., Magnuson, M. A., Drucker, D. J., & Leiter, A. B.
Affiliations
  • Tufts Medical Center (US)
  • University of Toronto (CA)
  • Vanderbilt University (US)
  • Tufts University (US)
Venue
Molecular and Cellular Biology
Published
2005-05-01
Volume
25
Issue
10
Pages
4189-4199
ISSN
  • 0270-7306 (ISSN-L)
  • 1098-5549
OpenAlex
W2113114436
Cited by
53
References
53
Citations by year
2026: 1 · 2025: 2 · 2022: 1 · 2021: 2 · 2018: 2 · 2017: 5 · 2016: 1 · 2015: 1 · 2014: 3 · 2013: 1 · 2012: 9
FWCI
6.68
Type
journal article
Language
en
Open access
Locations
  • Molecular and Cellular Biology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5p60dk020593-31, DK 20593, DK42502)
  • Canadian Institutes of Health Research
  • National Cancer Institute (T32 CA65441, T32CA065441)
  • National Institute of Diabetes and Digestive and Kidney Diseases (P60-DK020593, DK67166, R01DK067166, P01DK042502, R01DK052870, P30 DK-34928, DK42502, DK 20593, P30DK034928, DK43673, R01DK043673, U19DK042502, DK52870, P30DK020593)
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
peptide YY, energy homeostasis, gastrointestinal endocrine cells, endocrine differentiation, pancreatic endocrine cells, intestinal endocrine cells, pancreatic polypeptide cells, alpha cells, pancreatic beta cells, dietary intake, gene deletion mice, lineage tracing, energy expenditure
MeSH terms
Animals, Cell Differentiation, Digestive System, Digestive System Physiological Phenomena, Eating, Endocrine System, Energy Metabolism, Homeostasis, Islets of Langerhans, Mice, Transgenic, Weight Gain, Gene Deletion, Gene Expression Regulation, Developmental, Cell Lineage, Transgenes, Peptide YY, Mice

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