PMID- 34402288 OWN - NLM STAT- MEDLINE DCOM- 20210818 LR - 20210818 IS - 1001-5302 (Print) IS - 1001-5302 (Linking) VI - 46 IP - 14 DP - 2021 Jul TI - [Molecular mechanism of geniposide in regulating GLUT2 glycosylation in pancreatic beta cells]. PG - 3643-3649 LID - 10.19540/j.cnki.cjcmm.20200118.401 [doi] AB - Type 2 diabetes mellitus( T2 DM) is a common chronic metabolic disease characterized by persistent hyperglycemia and insulin resistance. In pancreatic beta-cells,glucose-stimulated insulin secretion( GSIS) plays a pivotal role in maintaining the balance of blood glucose level. Previous studies have shown that geniposide,one of the active components of Gardenia jasminoides,could quickly regulate the absorption and metabolism of glucose,and affect glucose-stimulated insulin secretion in pancreatic beta cells,but the specific mechanism needs to be further explored. Emerging evidence indicated that glycosylation of glucose transporter( GLUT) has played a key role in sensing cell microenvironmental changes and regulating glucose homeostasis in eucaryotic cells. In this study,we studied the effects of geniposide on the key molecules of GLUT2 glycosylation in pancreatic beta cells. The results showed that geniposide could significantly up-regulate the mRNA and protein levels of Glc NAc T-Ⅳa glycosyltransferase( Gn T-Ⅳa) and galectin-9 but had no signi-ficant effect on the expression of clathrin,and geniposide could distinctively regulate the protein level of Gn T-Ⅳa in a short time( 1 h) under the conditions of low and medium glucose concentrations,but had no significant effect on the protein level of galectin-9. In addition,geniposide could also remarkably affect the protein level of glycosylated GLUT2 in a short-time treatment. The above results suggested that geniposide could quickly regulate the protein level of Gn T-Ⅳa,a key molecule of protein glycosylation in INS-1 rat pancreatic betacells and affect the glycosylation of GLUT2. These findings suggested that the regulation of geniposide on glucose absorption,metabolism and glucose-stimulated insulin secretion might be associated with its efficacy in regulating GLUT2 glycosylation and affecting its distribution on the cell membrane and cytoplasm in pancreatic beta cells. FAU - Jiang, Xiao-Qing AU - Jiang XQ AD - Chongqing Key Laboratory of Medicinal Chemistry & Molecular Pharmacology Chongqing 400054,China School of Pharmacy & Bioengineering,Chongqing University of Technology Chongqing 400054,China. FAU - Shen, Shen-Li AU - Shen SL AD - Chongqing Key Laboratory of Medicinal Chemistry & Molecular Pharmacology Chongqing 400054,China School of Pharmacy & Bioengineering,Chongqing University of Technology Chongqing 400054,China. FAU - Li, Wei-Zhao AU - Li WZ AD - Chongqing Key Laboratory of Medicinal Chemistry & Molecular Pharmacology Chongqing 400054,China School of Pharmacy & Bioengineering,Chongqing University of Technology Chongqing 400054,China. FAU - Xu, Xing-Ke AU - Xu XK AD - Chongqing Key Laboratory of Medicinal Chemistry & Molecular Pharmacology Chongqing 400054,China School of Pharmacy & Bioengineering,Chongqing University of Technology Chongqing 400054,China. FAU - Yin, Fei AU - Yin F AD - Chongqing Key Laboratory of Medicinal Chemistry & Molecular Pharmacology Chongqing 400054,China School of Pharmacy & Bioengineering,Chongqing University of Technology Chongqing 400054,China. LA - chi PT - Journal Article PL - China TA - Zhongguo Zhong Yao Za Zhi JT - Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica JID - 8913656 RN - 0 (Insulin) RN - 0 (Iridoids) RN - 145295QLXY (geniposide) RN - IY9XDZ35W2 (Glucose) SB - IM MH - Animals MH - *Diabetes Mellitus, Type 2/drug therapy/genetics/metabolism MH - Glucose/metabolism MH - Glycosylation MH - Insulin/metabolism MH - *Insulin-Secreting Cells/metabolism MH - Iridoids MH - Rats OTO - NOTNLM OT - galectin-9 OT - geniposide OT - glucose transporter 2(GLUT2) OT - glycosylation OT - glycosyltransferase EDAT- 2021/08/18 06:00 MHDA- 2021/08/19 06:00 CRDT- 2021/08/17 07:57 PHST- 2021/08/17 07:57 [entrez] PHST- 2021/08/18 06:00 [pubmed] PHST- 2021/08/19 06:00 [medline] AID - 10.19540/j.cnki.cjcmm.20200118.401 [doi] PST - ppublish SO - Zhongguo Zhong Yao Za Zhi. 2021 Jul;46(14):3643-3649. doi: 10.19540/j.cnki.cjcmm.20200118.401.