PMID- 22528396 OWN - NLM STAT- MEDLINE DCOM- 20130114 LR - 20211021 IS - 1573-6881 (Electronic) IS - 0145-479X (Linking) VI - 44 IP - 3 DP - 2012 Jun TI - alpha-Lipoic acid protects 3T3-L1 adipocytes from NYGGF4 (PID1) overexpression-induced insulin resistance through increasing phosphorylation of IRS-1 and Akt. PG - 357-63 LID - 10.1007/s10863-012-9440-5 [doi] AB - NYGGF4 (also called PID1) was demonstrated that it may be related to the development of obesity-related IR. We aimed in the present study to further elucidate the effects of NYGGF4 on IR and the underlying mechanisms through using alpha-Lipoic acid (LA) treatment, which could facilitate glucose transport and utilization in fully differentiated adipocytes. Our data showed that the LA pretreatment strikingly enhanced insulin-stimulated glucose uptake through increasing GLUT4 translocation to the PM in NYGGF4 overexpression adipocytes. The reactive oxygen species (ROS) levels in NYGGF4 overexpression adipocytes were strikingly enhanced, which could be decreased by the LA pretreatment. NYGGF4 overexpression resulted in significant inhibition of tyrosine phosphorylation of IRS-1 and serine phosphorylation of Akt, whereas incubation with LA strongly activated IRS-1 and Akt phosphorylation in NYGGF4 overexpression adipocytes. These results suggest that LA protects 3T3-L1 adipocytes from NYGGF4-induced IR partially through increasing phosphorylation of IRS-1 and Akt and provide evidence that NYGGF4 may be a potential target for the treatment of obesity and obesity-related IR. FAU - Wang, Yu-mei AU - Wang YM AD - Department of Child Health, Huai'an Maternity and Child Health Hospital, Huai'an 223002, China. FAU - Lin, Xiao-fei AU - Lin XF FAU - Shi, Chun-mei AU - Shi CM FAU - Lu, Lan AU - Lu L FAU - Qin, Zhen-Ying AU - Qin ZY FAU - Zhu, Guan-zhong AU - Zhu GZ FAU - Cao, Xin-guo AU - Cao XG FAU - Ji, Chen-bo AU - Ji CB FAU - Qiu, Jie AU - Qiu J FAU - Guo, Xi-rong AU - Guo XR LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120421 PL - United States TA - J Bioenerg Biomembr JT - Journal of bioenergetics and biomembranes JID - 7701859 RN - 0 (Carrier Proteins) RN - 0 (Glucose Transporter Type 4) RN - 0 (Insulin Receptor Substrate Proteins) RN - 0 (NYGGF4 protein, mouse) RN - 0 (Reactive Oxygen Species) RN - 0 (Slc2a4 protein, mouse) RN - 73Y7P0K73Y (Thioctic Acid) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) SB - IM MH - 3T3-L1 Cells MH - Adipocytes/*drug effects/metabolism MH - Animals MH - Carrier Proteins/*biosynthesis/genetics/metabolism MH - Glucose Transporter Type 4/metabolism MH - Insulin Receptor Substrate Proteins/metabolism MH - Insulin Resistance/*physiology MH - Mice MH - Phosphorylation MH - Proto-Oncogene Proteins c-akt/*metabolism MH - Reactive Oxygen Species/metabolism MH - Thioctic Acid/*pharmacology MH - Transfection EDAT- 2012/04/25 06:00 MHDA- 2013/01/15 06:00 CRDT- 2012/04/25 06:00 PHST- 2012/02/01 00:00 [received] PHST- 2012/03/29 00:00 [accepted] PHST- 2012/04/25 06:00 [entrez] PHST- 2012/04/25 06:00 [pubmed] PHST- 2013/01/15 06:00 [medline] AID - 10.1007/s10863-012-9440-5 [doi] PST - ppublish SO - J Bioenerg Biomembr. 2012 Jun;44(3):357-63. doi: 10.1007/s10863-012-9440-5. Epub 2012 Apr 21.