Brown Fat Development in Birds
Author Information
Author(s): Mezentseva Nadejda V, Kumaratilake Jaliya S, Newman Stuart A
Primary Institution: New York Medical College
Hypothesis
Can embryonic chicken cells differentiate into brown adipocyte-like cells?
Conclusion
The study suggests that the brown fat differentiation pathway evolved in a common ancestor of birds and mammals, but was lost in birds.
Supporting Evidence
- The study identified conditions under which chicken cells can differentiate into brown adipocyte-like cells.
- These cells express key markers associated with brown fat differentiation.
- The absence of the UCP1 gene in birds suggests a loss of thermogenic capability in their lineage.
Takeaway
Scientists found that chicken cells can turn into cells that look like brown fat, even though birds don't have the gene for it. This shows that birds and mammals share a common ancestor that had this ability.
Methodology
The study involved isolating mesenchymal cells from embryonic chicken limb buds and inducing them to differentiate into avian brown adipocyte-like cells in vitro.
Limitations
The study does not confirm the functionality of the induced avian brown adipocyte-like cells as true brown adipocytes.
Digital Object Identifier (DOI)
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