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2018 ; 13
(3
): e0194679
Nephropedia Template TP
Browne S
; Jha AK
; Ameri K
; Marcus SG
; Yeghiazarians Y
; Healy KE
PLoS One
2018[]; 13
(3
): e0194679
PMID29566045
show ga
Cell-based strategies for the treatment of ischemic diseases are at the forefront
of tissue engineering and regenerative medicine. Cell therapies purportedly can
play a key role in the neovascularization of ischemic tissue; however, low
survival and poor cell engraftment with the host vasculature following
implantation limits their potential to treat ischemic diseases. To overcome these
limitations, we previously developed a growth factor sequestering hyaluronic acid
(HyA)-based hydrogel that enhanced transplanted mouse cardiosphere-derived cell
survival and formation of vasculature that anastomosed with host vessels. In this
work, we examined the mechanism by which HyA hydrogels presenting transforming
growth factor beta-1 (TGF-?1) promoted proliferation of more clinically relevant
human cardiosphere-derived cells (hCDC), and their formation of vascular-like
networks in vitro. We observed hCDC proliferation and enhanced formation of
vascular-like networks occurred in the presence of TGF-?1. Furthermore,
production of nitric oxide (NO), VEGF, and a host of angiogenic factors were
increased in the presence of TGF-?1. This response was dependent on the
co-activity of CD105 (Endoglin) with the TGF-?R2 receptor, demonstrating its role
in the process of angiogenic differentiation and vascular organization of hCDC.
These results demonstrated that hCDC form vascular-like networks in vitro, and
that the induction of vascular networks by hCDC within growth factor sequestering
HyA hydrogels was mediated by TGF-?1/CD105 signaling.