Activin A inhibits differentiation of 3T3-L1 preadipocyte. 2005

Shizuka Hirai, and Mai Yamanaka, and Hiroyuki Kawachi, and Tohru Matsui, and Hideo Yano
Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kitashirakawa-oiwake, Sakyo-ku, Kyoto-shi 606-8502, Japan. shizuka@kais.kyoto-u.ac.jp

We investigated the effect of activin A on differentiation of 3T3-L1 preadipocyte. Activin A suppressed the induction of terminal differentiation markers such as glycerol-3-phosphate dehydrogenase (GPDH) activity, lipid accumulation, and the expression of adipocyte fatty acid-binding protein (aP2) mRNA when the cells were treated with activin A throughout the differentiation period. Activin A treatment during the early phase decreased GPDH activity and aP2 mRNA level, and also reduced the expression of peroxisome proliferator-activated receptor (PPAR) gamma and CCAAT/enhancer binding protein (C/EBP) alpha mRNAs without affecting the expressions of the active isoforms of C/EBPbeta and its mRNA. On the other hand, activin A treatment had no effect on the mitotic clonal expansion. These results indicate that activin A inhibits adipogenesis via affecting the transcriptional factor cascade upstream of PPARgamma expression.

UI MeSH Term Description Entries
D011994 Recombinant Proteins Proteins prepared by recombinant DNA technology. Biosynthetic Protein,Biosynthetic Proteins,DNA Recombinant Proteins,Recombinant Protein,Proteins, Biosynthetic,Proteins, Recombinant DNA,DNA Proteins, Recombinant,Protein, Biosynthetic,Protein, Recombinant,Proteins, DNA Recombinant,Proteins, Recombinant,Recombinant DNA Proteins,Recombinant Proteins, DNA
D002454 Cell Differentiation Progressive restriction of the developmental potential and increasing specialization of function that leads to the formation of specialized cells, tissues, and organs. Differentiation, Cell,Cell Differentiations,Differentiations, Cell
D005993 Glycerolphosphate Dehydrogenase Alpha-Glycerophosphate Dehydrogenase,Glycerol-3-Phosphate Dehydrogenase,Glycerophosphate Dehydrogenase,Glycerophosphate Oxidase,Alpha Glycerophosphate Dehydrogenase,Dehydrogenase, Alpha-Glycerophosphate,Dehydrogenase, Glycerol-3-Phosphate,Dehydrogenase, Glycerolphosphate,Dehydrogenase, Glycerophosphate,Glycerol 3 Phosphate Dehydrogenase,Oxidase, Glycerophosphate
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012333 RNA, Messenger RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm. Messenger RNA,Messenger RNA, Polyadenylated,Poly(A) Tail,Poly(A)+ RNA,Poly(A)+ mRNA,RNA, Messenger, Polyadenylated,RNA, Polyadenylated,mRNA,mRNA, Non-Polyadenylated,mRNA, Polyadenylated,Non-Polyadenylated mRNA,Poly(A) RNA,Polyadenylated mRNA,Non Polyadenylated mRNA,Polyadenylated Messenger RNA,Polyadenylated RNA,RNA, Polyadenylated Messenger,mRNA, Non Polyadenylated
D014157 Transcription Factors Endogenous substances, usually proteins, which are effective in the initiation, stimulation, or termination of the genetic transcription process. Transcription Factor,Factor, Transcription,Factors, Transcription
D017667 Adipocytes Cells in the body that store FATS, usually in the form of TRIGLYCERIDES. WHITE ADIPOCYTES are the predominant type and found mostly in the abdominal cavity and subcutaneous tissue. BROWN ADIPOCYTES are thermogenic cells that can be found in newborns of some species and hibernating mammals. Fat Cells,Lipocytes,Adipocyte,Cell, Fat,Cells, Fat,Fat Cell,Lipocyte
D047495 PPAR gamma A nuclear transcription factor. Heterodimerization with RETINOID X RECEPTOR ALPHA is important in regulation of GLUCOSE metabolism and CELL GROWTH PROCESSES. It is a target of THIAZOLIDINEDIONES for control of DIABETES MELLITUS. PPARgamma,PPARgamma2,PPARgamma3,Peroxisome Proliferator-Activated Receptor gamma,Thiazolidinedione Receptor,mPPARgamma1,mPPARgamma2,Peroxisome Proliferator Activated Receptor gamma,Receptor, Thiazolidinedione
D049109 Cell Proliferation All of the processes involved in increasing CELL NUMBER including CELL DIVISION. Cell Growth in Number,Cellular Proliferation,Cell Multiplication,Cell Number Growth,Growth, Cell Number,Multiplication, Cell,Number Growth, Cell,Proliferation, Cell,Proliferation, Cellular

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