Du, Ping Da Costa, Avelino Dos Santos Savitri, Cininta Ha, Sang Su Wang, Peng-Yuan Park, Kwideok 2024-01-19T17:01:41Z 2024-01-19T17:01:41Z 2021-09-05 2020-08 0928-4931 https://pubs.kist.re.kr/handle/201004/118291 Decellularized human lung fibroblast-derived matrix (hFDM) has demonstrated its excellent proangiogenic capability. In this study, we propose a self-assembled, injectable multicellular microspheres containing human umbilical vein endothelial cells (HUVECs) and mesenchymal stem cell (MSCs), collagen hydrogel (Col), and hFDM toward therapeutic angiogenesis. Those multicellular microspheres are spontaneously formed by the mixtures of cell and hydrogel after being dropped on the parafilm for several hours. The size of microspheres can be manipulated via adjusting the initial volume of droplets and the culture period. The cells in the microspheres are highly viable. Multicellular microspheres show good capability of cell migration on 2D culture plate and also exhibit active cell sprouting in 3D environment (Col) forming capillary-like structures. We also find that multiple angiogenic-related factors are significantly upregulated with the multicellular microspheres prepared via Col and hFDM (Col/hFDM) than those prepared using Col alone or single cells (harvested from cocultured HUVECs/MSCs in monolayer). For therapeutic efficacy evaluation, three different groups of single cells, Col and Col/hFDM microspheres are injected to a hindlimb ischemic model, respectively, along with PBS injection as a control group. It is notable that Col/hFDM microspheres significantly improve the blood reperfusion and greatly attenuate the fibrosis level of the ischemic regions. In addition, Col/hFDM microspheres show higher cell engraftment level than that of the other groups. The incorporation of transplanted cells with host vasculature is detectable only with the treatment of Col/hFDM. Current results suggest that hFDM plays an important role in the multicellular microspheres for angiogenic cellular functions in vitro as well as in vivo. Taken together, our injectable multicellular microspheres (Col/hFDM) offer a very promising platform for cell delivery and tissue regenerative applications. English Elsevier BV MESENCHYMAL STEM-CELLS ENDOTHELIAL-CELLS PROMOTES ANGIOGENESIS LIMB ISCHEMIA TRANSPLANTATION QUANTIFICATION MORPHOGENESIS CONTRACTION MECHANISMS THERAPIES An injectable, self-assembled multicellular microsphere with the incorporation of fibroblast-derived extracellular matrix for therapeutic angiogenesis Article 10.1016/j.msec.2020.110961 1 Materials Science and Engineering: C, v.113 Materials Science and Engineering: C 113 scie scopus 000537712500013 2-s2.0-85083462051 Materials Science, Biomaterials Materials Science Article MESENCHYMAL STEM-CELLS ENDOTHELIAL-CELLS PROMOTES ANGIOGENESIS LIMB ISCHEMIA TRANSPLANTATION QUANTIFICATION MORPHOGENESIS CONTRACTION MECHANISMS THERAPIES Human fibroblast-derived extracellular matrix (hFDM) Human umbilical vein endothelial cells Mesenchymal stem cells Multicellular microsphere Therapeutic angiogenesis Hindlimb ischemia