Comparative studies have demonstrated the immaturity and dysfunction ofβcells in islet organoids.However,the authenticity and maturity of in vitro progenitors precedingβcells and the fidelity of the islet organoid d...Comparative studies have demonstrated the immaturity and dysfunction ofβcells in islet organoids.However,the authenticity and maturity of in vitro progenitors precedingβcells and the fidelity of the islet organoid development process compared with bonafide human pancreas development remain unclear,which could reveal potential causes of the immaturity of in vitroβcells and offer insights for optimization strategies.展开更多
AIM:To investigate the expression and localization of paxillin in rat pancreas during development. METHODS:Pancreata from Sprague Dawley rat fetuses, embryos, young animals, and adult animals were used in this study. ...AIM:To investigate the expression and localization of paxillin in rat pancreas during development. METHODS:Pancreata from Sprague Dawley rat fetuses, embryos, young animals, and adult animals were used in this study. Expression levels of paxillin in pancreata of different development stages were detected by reverse transcription polymerase chain reaction and Western blotting. To identify the cell location of paxillin in the developing rat pancreas, immunohistochemistry and double-immunofluorescent staining were performed using antibodies for specific cell markers and paxillin, respectively. RESULTS:The highest paxillin mRNA level was detected at E15.5 (embryo day 15.5) following a decrease in the later developmental periods (P < 0.05 vs E18.5, P0 and adult, respectively), and a progressively increased paxillin protein expression through the transition from E15.5 to adult was detected. The paxillin positive staining was mainly localized in rat islets of Langerhans at each stage tested during pancreas development. CONCLUSION:The dynamic expression of paxillin in rat pancreas from different stages indicates that paxillin might be involved in some aspects of pancreatic development.展开更多
基金supported by grants from the Ministry of Science and Technology of the People's Republic of China(No.2021YFA1300301,2018YFA0507101)the Beijing Natural Science Foundation(China)(No.5212016).
文摘Comparative studies have demonstrated the immaturity and dysfunction ofβcells in islet organoids.However,the authenticity and maturity of in vitro progenitors precedingβcells and the fidelity of the islet organoid development process compared with bonafide human pancreas development remain unclear,which could reveal potential causes of the immaturity of in vitroβcells and offer insights for optimization strategies.
基金Supported by The National Natural Science Foundation of China,Grant No.81070620International Cooperation Project of Jiangsu Province,Grant No.BK2007117 and BZ2008062
文摘AIM:To investigate the expression and localization of paxillin in rat pancreas during development. METHODS:Pancreata from Sprague Dawley rat fetuses, embryos, young animals, and adult animals were used in this study. Expression levels of paxillin in pancreata of different development stages were detected by reverse transcription polymerase chain reaction and Western blotting. To identify the cell location of paxillin in the developing rat pancreas, immunohistochemistry and double-immunofluorescent staining were performed using antibodies for specific cell markers and paxillin, respectively. RESULTS:The highest paxillin mRNA level was detected at E15.5 (embryo day 15.5) following a decrease in the later developmental periods (P < 0.05 vs E18.5, P0 and adult, respectively), and a progressively increased paxillin protein expression through the transition from E15.5 to adult was detected. The paxillin positive staining was mainly localized in rat islets of Langerhans at each stage tested during pancreas development. CONCLUSION:The dynamic expression of paxillin in rat pancreas from different stages indicates that paxillin might be involved in some aspects of pancreatic development.
