Researchers obtain functional human blood cells via interspecies chimerism_tio2 996 DATE: 2022-06-27 18:13:39
April 19, 2022
Researchers obtain functional human blood cells via interspecies chimerism
by Chinese Academy of Sciences
Interspecies chimerism is a phenomenon of an organism consisting of tissue and genetic information from two different species. Currently, many studies investigate the use of interspecies chimerism with human pluripotent stem cells (hPSCs) to generate functional human cells, tissues or organs in large animals, which is expected to solve the shortage of functional tissues and organs for transplant. However, hPSCs interspecies chimerism faces barriers due to the extremely low chimeric contribution of hPSCs.
Recently, research teams led by Prof. Pan Guangjin and Prof. Lai Liangxue from the Guangzhou Institutes of Biomedicine and Health (GIBH) of the Chinese Academy of Sciences (CAS) made new progress on hPSCs interspecies chimerism. They developed an enhanced hPSCs in interspecies chimerism that allows the obtaining of functional human blood cells through interspecies chimerism technology for the first time. The study is published online in Stem Cell Reports.
The teams discovered that the rapid apoptosis of hPSCs in the interspecies embryos was mainly due to the growth disadvantage and a "loser" state competing with the host animal stem cells. A new factor MYCN combined with anti-apoptotic gene BCL2 effectively overcame apoptosis of hPSCs and markedly promoted chimerism formation.
Strikingly, the teams isolated live human blood progenitor cells from blood-deficient mice through interspecies chimerism using hPSCs for complementation. The obtained cells can be further cultured and differentiated into different blood cells in dish.
This work presents an important method for understanding the interspecies chimerism barrier using hPSCs. The enhanced hPSCs for interspecies chimerism lays the foundation for acquiring human cells, tissues and organs for transplantation purposes in the future.
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More information:Yanling Zhu et al, Generating functional cells through enhanced interspecies chimerism with human pluripotent stem cells, Stem Cell Reports(2022). DOI: 10.1016/j.stemcr.2022.03.009 Journal information:Stem Cell ReportsProvided by Chinese Academy of Sciences Citation: Researchers obtain functional human blood cells via interspecies chimerism (2022, April 19) retrieved 19 April 2022 from https://phys.org/news/2022-04-functional-human-blood-cells-interspecies.html This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. 4 shares