Fgf10: A Paracrine-Signaling Molecule in Development, Disease, and Regenerative Medicine

ISSN: 1875-5666 (Online)
ISSN: 1566-5240 (Print)


Volume 14, 10 Issues, 2014


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Fgf10: A Paracrine-Signaling Molecule in Development, Disease, and Regenerative Medicine

Author(s): N. Itoh and H. Ohta

Affiliation: Department of Genetic Biochemistry, Kyoto University Graduate School of Pharmaceutical Sciences, Yoshida-shimoadachi, Sakyo, Kyoto 606-8501, Japan.

Abstract

The Fgf family comprises 22 members with diverse functions in development, repair, metabolism, and neuronal activities. Fgf10 mediates biological responses by activating Fgf receptor 2b (Fgfr2b) with heparin/heparan sulfate in a paracrine manner. Fgf10 and Fgfr2b are expressed in mesenchymal and epithelial tissues, respectively. Fgf10 is an epithelial-mesenchymal signaling molecule. Fgf10 knockout mice show severe phenotypes with complete truncation of the fore- and hindlimbs and die shortly after birth due to impaired lung development, indicating that Fgf10 serves as an essential regulator of lung and limb formation. Fgf10 also has roles in the development of white adipose tissue, heart, liver, brain, kidney, cecum, ocular glands, thymus, inner ear, tongue, trachea, eye, stomach, prostate, salivary gland, mammary gland, and whiskers. The diverse phenotypes of Fgf10 knockout mice are closely related to those of Fgfr2 knockout mice, suggesting that Fgf10 acts as a major ligand for Fgfr2b in mouse multi-organ development. Aplasia of lacrimal and salivary glands and lacrimo-auriculo-dento-digital syndrome are caused by Fgf10 mutations in humans. Variants in Fgf10 may be involved in an increased risk for limb deficiencies and cleft lip and palate. Patients with Fgf10 haploinsufficiency have lung function parameters indicating chronic obstructive pulmonary disease. Fgf10 induces migration and invasion in pancreatic cancer cells. Fgf10 signaling may be involved in an increased risk for breast cancer. Fgf10 also induces the differentiation of embryonic stem cells into a gut-like structure, cardiomyocytes, and hepatocytes. These findings indicate the crucial roles of Fgf10 in development, disease, and regenerative medicine.

Keywords: Development, disease, Fgf, Fgf10, Fgfr2b, paracrine, stem cells.

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Article Details

Volume: 14
Issue Number: 4
First Page: 504
Last Page: 509
Page Count: 6
DOI: 10.2174/1566524014666140414204829
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