ATF4 regulates SREBP1c expression to control fatty acids synthesis in 3T3-L1 adipocytes differentiation. 2016

Hu Chen, and Renqiang Yuan, and Ying Zhang, and Xumeng Zhang, and Luxi Chen, and Xingyu Zhou, and Zhuning Yuan, and Yaping Nie, and Ming Li, and Delin Mo, and Yaosheng Chen
State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China.

Activating transcription factor 4 (ATF4), which is highly expressed in 3T3-L1 adipocytes after adipogenic induction, is essential for adipocytes differentiation. ATF4 also plays a vital role in regulating fatty acids biosynthesis, whereas the detailed mechanism of this process is still unclear. Here we demonstrated that siRNA-based ATF4 depletion in 3T3-L1 adipocytes significantly reduced the accumulation of fatty acids and triglycerides. Moreover, SREBP1c protein, which is an important transcription factor of lipogenesis, appreciably decreased while Srebp1c mRNA increased. Then we identified that ATF4 could maintain SREBP1c protein stability by directly activating the expression of USP7 which deubiquitinates SREBP1c and increases its protein content in cell. Besides, USP7 could restore the synthesis of fatty acids and triglycerides in the absence of ATF4. On the other hand, we found that ATF4 might inhibit the transcription of Srebp1c through TRB3, which is repressed by IBMX and DEX during early adipogenesis. Thus, our data indicate that ATF4 regulates SREBP1c expression to control fatty acids synthesis.

UI MeSH Term Description Entries
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
D005227 Fatty Acids Organic, monobasic acids derived from hydrocarbons by the equivalent of oxidation of a methyl group to an alcohol, aldehyde, and then acid. Fatty acids are saturated and unsaturated (FATTY ACIDS, UNSATURATED). (Grant & Hackh's Chemical Dictionary, 5th ed) Aliphatic Acid,Esterified Fatty Acid,Fatty Acid,Fatty Acids, Esterified,Fatty Acids, Saturated,Saturated Fatty Acid,Aliphatic Acids,Acid, Aliphatic,Acid, Esterified Fatty,Acid, Saturated Fatty,Esterified Fatty Acids,Fatty Acid, Esterified,Fatty Acid, Saturated,Saturated Fatty Acids
D000076084 Ubiquitin-Specific Peptidase 7 A ubiquitinyl hydrolase that deubiquitinates several proteins with critical roles in DNA REPAIR, cell growth, and survival, including TUMOR SUPPRESSOR PROTEIN P53; MDM-2 PROTEIN; and PTEN PHOSPHOHYDROLASE. It also stabilizes herpesvirus 1 trans-acting transcriptional protein VMW110 during HSV-1 infection, contributing to its function as a TRANS-ACTIVATOR. HAUSP Protein,Herpesvirus-Associated Ubiquitin-Specific Peptidase,USP7 Protein,Herpesvirus Associated Ubiquitin Specific Peptidase,Peptidase 7, Ubiquitin-Specific,Peptidase, Herpesvirus-Associated Ubiquitin-Specific,Ubiquitin Specific Peptidase 7,Ubiquitin-Specific Peptidase, Herpesvirus-Associated
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
D014158 Transcription, Genetic The biosynthesis of RNA carried out on a template of DNA. The biosynthesis of DNA from an RNA template is called REVERSE TRANSCRIPTION. Genetic 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
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus
D051701 Activating Transcription Factor 4 An activating transcription factor that regulates the expression of a variety of GENES involved in amino acid metabolism and transport. It also interacts with HTLV-I transactivator protein. ATF4 Transcription Factor,Tax-Responsive Enhancer Element B67,Tax Responsive Enhancer Element B67,Transcription Factor, ATF4
D051780 Sterol Regulatory Element Binding Protein 1 A sterol regulatory element binding protein that regulates expression of GENES involved in FATTY ACIDS metabolism and LIPOGENESIS. Two major isoforms of the protein exist due to ALTERNATIVE SPLICING. Adipocyte Determination And Differentiation Factor 1,SRE-1 Binding Protein,SREBP-1a,SREBP-1c,SREBP1 Protein,Sterol Regulatory Element Binding Protein 1a,Sterol Regulatory Element Binding Protein 1c,Sterol Regulatory Element-Binding Protein 1,Transcription Factor ADD1,ADD1, Transcription Factor,SRE 1 Binding Protein,SREBP 1a,SREBP 1c
D041721 3T3-L1 Cells A continuous cell line that is a substrain of SWISS 3T3 CELLS developed though clonal isolation. The mouse fibroblast cells undergo an adipose-like conversion as they move to a confluent and contact-inhibited state. 3T3-L1,3T3 L1 Cells,3T3-L1 Cell,Cell, 3T3-L1,Cells, 3T3-L1

Related Publications

Hu Chen, and Renqiang Yuan, and Ying Zhang, and Xumeng Zhang, and Luxi Chen, and Xingyu Zhou, and Zhuning Yuan, and Yaping Nie, and Ming Li, and Delin Mo, and Yaosheng Chen
January 2007, Physiological research,
Hu Chen, and Renqiang Yuan, and Ying Zhang, and Xumeng Zhang, and Luxi Chen, and Xingyu Zhou, and Zhuning Yuan, and Yaping Nie, and Ming Li, and Delin Mo, and Yaosheng Chen
February 1999, Biochemical and biophysical research communications,
Hu Chen, and Renqiang Yuan, and Ying Zhang, and Xumeng Zhang, and Luxi Chen, and Xingyu Zhou, and Zhuning Yuan, and Yaping Nie, and Ming Li, and Delin Mo, and Yaosheng Chen
August 2006, Archives of biochemistry and biophysics,
Hu Chen, and Renqiang Yuan, and Ying Zhang, and Xumeng Zhang, and Luxi Chen, and Xingyu Zhou, and Zhuning Yuan, and Yaping Nie, and Ming Li, and Delin Mo, and Yaosheng Chen
November 2018, Molecular and cellular biochemistry,
Hu Chen, and Renqiang Yuan, and Ying Zhang, and Xumeng Zhang, and Luxi Chen, and Xingyu Zhou, and Zhuning Yuan, and Yaping Nie, and Ming Li, and Delin Mo, and Yaosheng Chen
October 2002, Biochemical and biophysical research communications,
Hu Chen, and Renqiang Yuan, and Ying Zhang, and Xumeng Zhang, and Luxi Chen, and Xingyu Zhou, and Zhuning Yuan, and Yaping Nie, and Ming Li, and Delin Mo, and Yaosheng Chen
November 2014, FEBS letters,
Hu Chen, and Renqiang Yuan, and Ying Zhang, and Xumeng Zhang, and Luxi Chen, and Xingyu Zhou, and Zhuning Yuan, and Yaping Nie, and Ming Li, and Delin Mo, and Yaosheng Chen
January 2012, Experimental diabetes research,
Hu Chen, and Renqiang Yuan, and Ying Zhang, and Xumeng Zhang, and Luxi Chen, and Xingyu Zhou, and Zhuning Yuan, and Yaping Nie, and Ming Li, and Delin Mo, and Yaosheng Chen
December 2013, Cell death and differentiation,
Hu Chen, and Renqiang Yuan, and Ying Zhang, and Xumeng Zhang, and Luxi Chen, and Xingyu Zhou, and Zhuning Yuan, and Yaping Nie, and Ming Li, and Delin Mo, and Yaosheng Chen
January 2011, Neuroscience research,
Hu Chen, and Renqiang Yuan, and Ying Zhang, and Xumeng Zhang, and Luxi Chen, and Xingyu Zhou, and Zhuning Yuan, and Yaping Nie, and Ming Li, and Delin Mo, and Yaosheng Chen
March 2007, Nan fang yi ke da xue xue bao = Journal of Southern Medical University,
Copied contents to your clipboard!