Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Differential effects of flavonoids on 3T3-L1 adipogenesis and lipolysis

Differential effects of flavonoids on 3T3-L1 adipogenesis and lipolysis Abstract Flavonoids, polyphenolic compounds that exist widely in plants, inhibit cell proliferation and increase cell differentiation in many cancerous and noncancerous cell lines. Because terminal differentiation of preadipocytes to adipocytes depends on proliferation of both pre- and postconfluent preadipocytes, we predicted that flavonoids would inhibit adipogenesis in the 3T3-L1 preadipocyte cell line. The flavonoids genistein and naringenin inhibited proliferation of preconfluent preadipocytes in a time- and dose-dependent manner. When added to 2-day postconfluent preadipocytes at the induction of differentiation, genistein inhibited mitotic clonal expansion, triglyceride accumulation, and peroxisome proliferator-activated receptor-γ expression, but naringenin had no effect. The antiadipogenic effect of genistein was not due to inhibition of insulin receptor subtrate-1 tyrosine phosphorylation. When added 3 days after induction of differentiation, neither flavonoid inhibited differentiation. In fully differentiated adipocytes, genistein increased basal and epinephrine-induced lipolysis, but naringenin had no significant effects. These data demonstrate that genistein and naringenin, despite structural similarity, have differential effects on adipogenesis and adipocyte lipid metabolism. genistein naringenin preadipocytes adipocytes peroxisome proliferator-activated receptor-γ insulin receptor substrate-1 Footnotes Address for reprint requests and other correspondence: J. B. Harp, Univ. of North Carolina at Chapel Hill, Dept. of Nutrition, CB# 7400 McGavran-Greenberg Hall, Chapel Hill, NC 27599 (E-mail: jharp@sph.unc.edu ). The costs of publication of this article were defrayed in part by the payment of page charges. The article must therefore be hereby marked “ advertisement ” in accordance with 18 U.S.C. Section 1734 solely to indicate this fact. Copyright © 2001 the American Physiological Society http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png AJP - Cell Physiology The American Physiological Society

Differential effects of flavonoids on 3T3-L1 adipogenesis and lipolysis

Harmon, Anne W.; Harp, Joyce B.
AJP - Cell Physiology , Volume 280 (4): C807 – Apr 1, 2001
Download PDF
8 pages

Loading next page...
 
/lp/the-american-physiological-society/differential-effects-of-flavonoids-on-3t3-l1-adipogenesis-and-HeX0Tr06K5

References

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
The American Physiological Society
Copyright
Copyright © 2010 the American Physiological Society
ISSN
0363-6143
eISSN
1522-1563
Publisher site
See Article on Publisher Site

Abstract

Abstract Flavonoids, polyphenolic compounds that exist widely in plants, inhibit cell proliferation and increase cell differentiation in many cancerous and noncancerous cell lines. Because terminal differentiation of preadipocytes to adipocytes depends on proliferation of both pre- and postconfluent preadipocytes, we predicted that flavonoids would inhibit adipogenesis in the 3T3-L1 preadipocyte cell line. The flavonoids genistein and naringenin inhibited proliferation of preconfluent preadipocytes in a time- and dose-dependent manner. When added to 2-day postconfluent preadipocytes at the induction of differentiation, genistein inhibited mitotic clonal expansion, triglyceride accumulation, and peroxisome proliferator-activated receptor-γ expression, but naringenin had no effect. The antiadipogenic effect of genistein was not due to inhibition of insulin receptor subtrate-1 tyrosine phosphorylation. When added 3 days after induction of differentiation, neither flavonoid inhibited differentiation. In fully differentiated adipocytes, genistein increased basal and epinephrine-induced lipolysis, but naringenin had no significant effects. These data demonstrate that genistein and naringenin, despite structural similarity, have differential effects on adipogenesis and adipocyte lipid metabolism. genistein naringenin preadipocytes adipocytes peroxisome proliferator-activated receptor-γ insulin receptor substrate-1 Footnotes Address for reprint requests and other correspondence: J. B. Harp, Univ. of North Carolina at Chapel Hill, Dept. of Nutrition, CB# 7400 McGavran-Greenberg Hall, Chapel Hill, NC 27599 (E-mail: jharp@sph.unc.edu ). The costs of publication of this article were defrayed in part by the payment of page charges. The article must therefore be hereby marked “ advertisement ” in accordance with 18 U.S.C. Section 1734 solely to indicate this fact. Copyright © 2001 the American Physiological Society

Journal

AJP - Cell Physiology – The American Physiological Society

Published: Apr 1, 2001

There are no references for this article.