Definitive Endodermal Cells Supply an in vitro Source of Mesenchymal Stem/Stromal Cells
2023
Yumeng Zhang | Ye Yi | Xia Xiao | Lingling Hu | Jiaqi Xu | Dejin Zheng | Ho Cheng Koc | Un In Chan | Ya Meng | Ligong Lu | Weiwei Liu | Xiaoling Xu | Ningyi Shao | Edwin Chong Wing Cheung | Ren-He Xu | Guokai Chen
Abstract Mesenchymal stem/Stromal cells (MSCs) have great therapeutic potentials, and they have been isolated from various tissues and organs including definitive endoderm (DE) organs, such as the lung, liver and intestine. MSCs have been induced from human pluripotent stem cells (hPSCs) through multiple embryonic lineages, including the mesoderm, neural crest, and extraembryonic cells. However, it remains unclear whether hPSCs could give rise to MSCs in vitro through the endodermal lineage. Here, we report that hPSC-derived, SOX17+ definitive endoderm progenitors can further differentiate to cells expressing classic MSC markers, which we name definitive endoderm-derived MSCs (DE-MSCs). Single cell RNA sequencing demonstrates the stepwise emergence of DE-MSCs, while endoderm-specific gene expression can be elevated by signaling modulation. DE-MSCs display multipotency and immunomodulatory activity in vitro and possess therapeutic effects in a mouse ulcerative colitis model. This study reveals that, in addition to the other germ layers, the definitive endoderm can also contribute to MSCs and DE-MSCs could be a cell source for regenerative medicine.
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