Functional and molecular rescue of aganglionic colon by human enteric nervous system progenitor transplantation in Hirschsprung disease
Jevans, B.; Cooper, F.; Peruzza, L.; Perin, S.; Li, S.; McAteer, T.; De Coppi, P.; Andrews, P. W.; Tsakiridis, A.; McCann, C. J.
Show abstract
Hirschsprung disease (HSCR) is a devastating congenital disorder characterised by absence of the enteric nervous system (ENS) in the distal gut. Cell therapy, using human pluripotent stem cell-derived ENS progenitors, offers an attractive alternative to treat this life-limiting disorder. Here we provide an in-depth characterisation of the HSCR phenotype in the B6;129-Ednrbtm1Ywa/J mouse model including molecular analyses highlighting the wide-ranging molecular effects of aganglionosis in HSCR colon. We show that transplantation of hPSC-derived ENS progenitors leads to significant increases in contractile function with formation of extensive donor-derived neuronal networks in colonic explants. Moreover, post-transplantation, we show that integration of ENS progenitors rescues many of the biological pathways impacted in the HSCR aganglionic microenvironment. These novel results provide strong evidence that human ENS progenitor transplantation can modulate critical signalling pathways affected in HSCR and exert positive impacts on contractile function, in aganglionic tissue, supporting further translational development of this regenerative medicine approach.
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