Abstract
Fibroblast growth factor 8 (FGF8), a secretory protein of the FGF family, is highly expressed during early developmental stages. The early-stage expression of FGF8 and its isoforms is crucial for the normal development of organisms, while their expressions in adulthood are limited to the steroid hormone-targeting tissues. Interestingly, differential expression of FGF8 has been associated with the progression of various cancer types including breast, prostate, and ovarian cancers. Specifically, in gynecological cancers, the expression of FGF8 is regulated by steroid hormones. FGF8 isoforms, that is, FGF8a, FGF8b, FGF8e, and FGF8f act through different fibroblast growth factor receptors in different cancers through three main signaling pathways – MAP/RAS kinase, AKT/PI3, and PCLγ. This short review article discusses the structure and functions of FGF-8, along with its role in different cancers.
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