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Mice lacking pro-opiomelanocortin are sensitive to high-fat feeding but respond normally to the acute anorectic effects of peptide-YY 3-36
Open accessAbstract
Inactivating mutations of the pro-opiomelanocortin (POMC) gene in both mice and humans leads to hyperphagia and obesity. To further examine the mechanisms whereby POMC-deficiency leads to disordered energy homeostasis, we have generated mice lacking all POMC-derived peptides. Consistent with a previously reported model, Pomc -/- mice were obese and hyperphagic. They also showed reduced resting oxygen consumption associated with lowered serum levels of thyroxine. Hypothalami from Pomc -/- mice showed markedly increased expression of melanin-concentrating hormone mRNA in the lateral hypothalamus, but expression of neuropeptide Y mRNA in the arcuate nucleus was not altered. Provision of a 45% fat diet increased energy intake and body weight in both Pomc -/- and Pomc +/- mice. The effects of leptin on food intake and body weight were blunted in obese Pomc -/- mice whereas nonobese Pomc -/- mice were sensitive to leptin. Surprisingly, we found that Pomc -/- mice maintained their acute anorectic response to peptide-YY 3-36 (PYY 3-36 ). However, 7 days of PYY 3-36 administration had no effect on cumulative food intake or body weight in wild-type or Pomc -/- mice. Thus, POMC peptides seem to be necessary for the normal response of energy balance to high-fat feeding, but not for the acute anorectic effect of PYY 3-36 or full effects of leptin on feeding. The finding that the loss of only one copy of the Pomc gene is sufficient to render mice susceptible to the effects of high fat feeding emphasizes the potential importance of this locus as a site for gene-environment interactions predisposing to obesity.
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Cites
Gut hormone PYY3-36 physiologically inhibits food intake
Batterham, R. L., Cowley, M. A., Small, C. J., Herzog, H., Cohen, M. A., Dakin, C. L., Wren, A. M., Brynes, A. E., Low, M. J., Ghatei, M. A., et al. (2002) · Nature · doi:10.1038/nature00887 · Cited by 2,351
Inhibition of Food Intake in Obese Subjects by Peptide YY 3–36
Batterham, R. L., Cohen, M. A., Ellis, S. M., Le Roux, C. W., Withers, D. J., Frost, G. S., Ghatei, M. A., & Bloom, S. R. (2003) · New England Journal of Medicine · doi:10.1056/nejmoa030204 · Cited by 1,604
The role of neuropeptide Y in the antiobesity action of the obese gene product
Stephens, T. W., Basinski, M., Bristow, P. K., Bue-Valleskey, J. M., Burgett, S. G., Craft, L., Hale, J., Hoffmann, J., Hsiung, H. M., Kriauciunas, A., et al. (1995) · Nature · doi:10.1038/377530a0 · Cited by 1,498
Glenn Stanley, B., Kyrkouli, S. E., Lampert, S., & Leibowitz, S. F. (1986) · Peptides · doi:10.1016/0196-9781(86)90149-x · Cited by 849
Proopiomelanocortin Neurons Are Direct Targets for Leptin in the Hypothalamus
Cheung, C. C., Clifton, D. K., & Steiner, R. A. (1997) · Endocrinology · doi:10.1210/endo.138.10.5570 · Cited by 769
Harris, M., Aschkenasi, C., Elias, C. F., Chandrankunnel, A., Nillni, E. A., Bjørbæk, C., Elmquist, J. K., Flier, J. S., & Hollenberg, A. N. (2001) · Journal of Clinical Investigation · doi:10.1172/jci10741 · Cited by 341
Kim, M. S., Small, C. J., Stanley, S. A., Morgan, D. G. A., Seal, L. J., Kong, W. M., Edwards, C. M. B., Abusnana, S., Sunter, D., Ghatei, M. A., et al. (2000) · Journal of Clinical Investigation · doi:10.1172/jci8857 · Cited by 256
Cited by
Anatomy and regulation of the central melanocortin system
Cone, R. D. (2005) · Nature Neuroscience · doi:10.1038/nn1455 · Cited by 1,583
The genetics of obesity: From discovery to biology
Loos, R. J. F., & Yeo, G. S. H. (2022) · Nature Reviews Genetics · doi:10.1038/s41576-021-00414-z · Cited by 1,291
Self-citationGastrointestinal regulation of food intake
Cummings, D. E., & Overduin, J. (2007) · Journal of Clinical Investigation · doi:10.1172/jci30227 · Cited by 1,216
The Human Obesity Gene Map: The 2005 Update
Rankinen, T., Zuberi, A., Chagnon, Y. C., Weisnagel, S. J., Argyropoulos, G., Walts, B., Pérusse, L., & Bouchard, C. (2006) · Obesity · doi:10.1038/oby.2006.71 · Cited by 1,119
Leptin receptor signaling in POMC neurons is required for normal body weight homeostasis
Balthasar, N., Coppari, R., McMinn, J., Liu, S. M., Lee, C. E., Tang, V., Kenny, C. D., McGovern, R. A., Chua, S. C., Elmquist, J. K., et al. (2004) · Neuron · doi:10.1016/j.neuron.2004.06.004 · Cited by 935
Metadata
- Authors
- Challis, B. G., Coll, A. P., Yeo, G. S. H., Pinnock, S. B., Dickson, S. L., Thresher, R. R., Dixon, J., Zahn, D., Rochford, J. J., White, A., Oliver, R. L., Millington, G., Aparicio, S. A., Colledge, W. H., Russ, A. P., Carlton, M. B., & O'Rahilly, S.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2004-03-15
- Volume
- 101
- Issue
- 13
- Pages
- 4695-4700
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2107263774
- Cited by
- 371
- References
- 7
- FWCI
- 14.48
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: Mice lacking pro-opiomelanocortin are sensitive to high-fat feeding but respond normally to the acute anorectic effects of peptide-YY 3-36. https://app.cochat.ai/papers/10.1073/pnas.0306931101
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- Challis, B. G., Coll, A. P., Yeo, G. S. H., Pinnock, S. B., Dickson, S. L., Thresher, R. R., Dixon, J., Zahn, D., Rochford, J. J., White, A., Oliver, R. L., Millington, G., Aparicio, S. A., Colledge, W. H., Russ, A. P., Carlton, M. B., & O'Rahilly, S. (2004). Mice lacking pro-opiomelanocortin are sensitive to high-fat feeding but respond normally to the acute anorectic effects of peptide-YY 3-36. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0306931101
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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