Journal
ANIMAL
Volume 14, Issue 2, Pages 312-321Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S175173111900209X
Keywords
adipogenesis; fibro-adipogenic progenitors; skeletal muscle; marbling; meat
Funding
- National Key Research and Development Program of China [2018YFD0500402]
- National Natural Science Foundation [31501925]
- Agriculture and Food Research Initiative Competitive Grants from the USDA National Institute of Food and Agriculture [2015-67015-23219, 2016-68006-24634]
- Chinese Scholarship Council
- NIFA [810933, 2016-68006-24634] Funding Source: Federal RePORTER
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In the livestock industry, subcutaneous and visceral fat pads are considered as wastes, while intramuscular fat or marbling fat is essential for improving flavor and palatability of meat. Thus, strategies for optimizing fat deposition are needed. Intramuscular adipocytes provide sites for lipid deposition and marbling formation. In the present article, we addressed the origin and markers of intramuscular adipocyte progenitors - fibro-adipogenic progenitors (FAPs), as well as the latest progresses in mechanisms regulating the proliferation and differentiation of intramuscular FAPs. Finally, by targeting intramuscular FAPs, possible nutritional manipulations to improve marbling fat deposition are discussed. Despite recent progresses, the properties and regulation of intramuscular FAPs in livestock remain poorly understood and deserve further investigation.
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