|
1
|
Abe T, Uosaki H, Shibata H, Hara H, Sarentonglaga B, Nagao Y, Hanazono Y. Fetal sheep support the development of hematopoietic cells in vivo from human induced pluripotent stem cells. Exp Hematol 2021; 95:46-57.e8. [PMID: 33395577 DOI: 10.1016/j.exphem.2020.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 12/14/2020] [Accepted: 12/28/2020] [Indexed: 10/22/2022]
Abstract
We report that a sheep fetal liver provides a microenvironment for generating hematopoietic cells with long-term engrafting capacity and multilineage differentiation potential from human induced pluripotent stem cell (iPSC)-derived hemogenic endothelial cells (HEs). Despite the promise of iPSCs for making any cell types, generating hematopoietic stem and progenitor cells (HSPCs) is still a challenge. We hypothesized that the hematopoietic microenvironment, which exists in fetal liver but is lacking in vitro, turns iPSC-HEs into HSPCs. To test this, we transplanted CD45-negative iPSC-HEs into fetal sheep liver, in which HSPCs first grow. Within 2 months, the transplanted cells became CD45 positive and differentiated into multilineage blood cells in the fetal liver. Then, CD45-positive cells translocated to the bone marrow and were maintained there for 3 years with the capability of multilineage differentiation, indicating that hematopoietic cells with long-term engraftment potential were generated. Moreover, human hematopoietic cells were temporally enriched by xenogeneic donor-lymphocyte infusion into the sheep. This study could serve as a foundation to generate HSPCs from iPSCs.
Collapse
Affiliation(s)
- Tomoyuki Abe
- Division of Regenerative Medicine, Center for Molecular Medicine, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan; Center for Development of Advanced Medical Technology, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan.
| | - Hideki Uosaki
- Division of Regenerative Medicine, Center for Molecular Medicine, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan; Center for Development of Advanced Medical Technology, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan
| | - Hiroaki Shibata
- Division of Regenerative Medicine, Center for Molecular Medicine, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan; Center for Development of Advanced Medical Technology, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan
| | - Hiromasa Hara
- Division of Regenerative Medicine, Center for Molecular Medicine, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan; Center for Development of Advanced Medical Technology, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan
| | | | - Yoshikazu Nagao
- Department of Agriculture, Utsunomiya University, Tochigi, Japan
| | - Yutaka Hanazono
- Division of Regenerative Medicine, Center for Molecular Medicine, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan; Center for Development of Advanced Medical Technology, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan.
| |
Collapse
|