Effect of transcription factor MEOX on insulin gene expression in glucagon-like peptide 1-secreting cells

• Published in: In vitro cellular & developmental biology. Animal 2024-10, Vol.60 (9), p.1099-1108
• Main Authors: Ryu, Gyeong Ryul, Bae, Dongryeoul, Uddin, Shahab, Meah, Mohammed Sohel, Ahmad, Waqas, Silvano, Kris John, Ahn, Gyeongik, Cha, Joon-Yung, Lee, Esder, Song, Ki-Ho, Kim, Woe-Yeon, Kim, Min Gab
• Format: Article
• Language: English
• Subjects: Animal Genetics and Genomics; Animals; Beta cells; Biomedical and Life Sciences; Cell Biology; Cell Culture; Cell Line; Developmental Biology; Diabetes mellitus (insulin dependent); DNA microarrays; Enteroendocrine Cells - metabolism; Gene expression; Gene Expression Regulation; Glucagon; Glucagon-like peptide 1; Glucagon-Like Peptide 1 - genetics; Glucagon-Like Peptide 1 - metabolism; Homeodomain Proteins - genetics; Homeodomain Proteins - metabolism; Hormones; INS gene; Insulin; Insulin - genetics; Insulin - metabolism; Insulin-Secreting Cells - metabolism; Islet cells; Life Sciences; Mice; Pancreas; Pancreatic islet transplantation; Pattern analysis; Rats; Secretion; Stem Cells; Transcription factors; Transcription Factors - genetics; Transcription Factors - metabolism
• ISSN: 1071-2690; 1543-706X; 1543-706X
• DOI: 10.1007/s11626-024-00964-6

Currently, the supply of beta cells for islet transplantation in the treatment of type 1 diabetes is limited. Enteroendocrine cells (EECs) are believed to have high potential as stem cells because they share significant developmental similarities with beta cells. In a previous study, we derived EEC cells that secrete individual gut hormones from STC-1 cells. This study aimed to examine intestinal hormone secretion and expression, investigate the expression of developmental-related transcription factors, and analyze the effect of MEOX on insulin gene expression in isolated EECs. The expression and secretion of enteroendocrine hormones were evaluated in L6 and K34 cells from STC-1 cells. Expression patterns of beta cell- and development-related genes in L6 and K34 cells were compared with beta cells. Comparisons of the MEOX-induced expression of Ins in beta cells and GLP-1-secreting cells were investigated. Both L6 and K34 cells predominantly expressed Glp1 and Gip , respectively. The secretion pattern of GLP-1 in L6 cells was similar to that of GLUTag cells. Previous microarray analysis confirmed MEOX as developmentally relevant transcription factors expressed in beta cells. Overexpression of MEOX showed a tendency to increase Ins expression in L6 and GLUTag cells, but not in MIN6 cells. However, when PDX1 and MEOX were co-expressed in GLUTag cells, insulin expression was suppressed, similar to that observed in MIN6 cells. These findings suggest a potential role for MEOX in regulating the expression of the Ins gene in both beta cells and GLP-1-secreting cells. Further studies are warranted to elucidate the underlying mechanism.