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Sca-1
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For the neurodegenerative disorder, see spinocerebellar ataxia type 1.
Sca-1 stands for "Stem cells antigen-1" (official gene symbol: Ly6a). It consist of 18-kDa mouse glycosyl phosphatidylinositol-anchored cell surface protein (GPI-AP) of the LY6 gene family. It is the common biological marker used to identify hematopoitic stem cell (HSC) along with other markers.
Application of Sca-1
- Sca-1 has a regenerative role in cardiac repair: Host cells with specific Sca-1+CD31− markers arise upon myocardial infarction, with evidence of expression of Sca-1 protein.
- Sca-1 plays a role in hematopoietic progenitor/stem cell lineage fate and c-kit expression.