FGF-10 is a growth factor for preadipocytes in white adipose tissue.
FGF-10 is a mesenchymal factor affecting epithelial cells during pattern formation. However, the expression and physiological role of FGF-10 in adults remains to be elucidated. We examined the expression of FGF-10 mRNA in a variety of adult rat tissues, and found to be most abundant in white adipose tissue. In white adipose tissue, FGF-10 mRNA was expressed in preadipocytes but not in mature adipocytes. The expression in white adipose tissue during postnatal development was also examined. The expression level was low at postnatal day 10 (P10). However, FGF-10 mRNA was abundantly detected later on (P28 and P48) when white adipose tissue growth was stimulated. We also examined the activity of recombinant FGF-10 for primary rat preadipocytes. FGF-10 showed significant mitogenic activity for primary preadipocytes, but did not affect the differentiation of preadipocytes. The expression profile of FGF-10 mRNA and the activity of FGF-10 reported here indicate that FGF-10, a unique secreted factor produced in white adipose tissue, acts as a growth factor for preadipocytes in white adipose tissues.
Yamasaki
M
M
Department of Genetic Biochemistry, Kyoto University Graduate School of Pharmaceutical Sciences, Kyoto, 606-8501, Japan.
Emoto
H
H
Konishi
M
M
Mikami
T
T
Ohuchi
H
H
Nakao
K
K
Itoh
N
N
D017667:Adipocytes / Q000166:cytology*; D000273:Adipose Tissue / Q000166:cytology*; D000818:Animals; D002455:Cell Division / Q000502:physiology*; D002478:Cells, Cultured; D051526:Fibroblast Growth Factor 10; D005346:Fibroblast Growth Factors / Q000235:genetics / Q000502:physiology*; D005786:Gene Expression Regulation; D008934:Mitogens / Q000235:genetics / Q000502:physiology; D012333:RNA, Messenger / Q000235:genetics; D051381:Rats; D011994:Recombinant Proteins / Q000235:genetics / Q000378:metabolism
C496465:Fgf10 protein, rat; D051526:Fibroblast Growth Factor 10; D008934:Mitogens; D012333:RNA, Messenger; D011994:Recombinant Proteins; D005346:Fibroblast Growth Factors