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Stem cell-mediated development, regeneration, chimerism, and aging in the colonial chordate Botryllus schlosseri.
Genesis : the Journal of Genetics and Development 2023 October 28
Stem cells are units of biological organization, responsible for tissue and organ development and regeneration. I study stem cell biology, aging, and the evolution of immunity using the colonial chordate Botryllus schlosseri as a model system. This organism is uniquely suited for this study because it is closely related to vertebrates, undergoes weekly cycles of stem cell mediated regeneration, is long lived and has a recognition system and robust immune system. I have led the Botryllus genome project and developed a novel method to obtain a synthetic long read sequence, identified Botryllus stem cells and stem cell niches, isolated the gene that controls self/non self-recognition and characterized its immune system on the cellular and molecular levels. Recently, I led the Botryllus atlas project to characterize the two developmental pathways, embryogenesis (sexual) and blastogenesis (asexual), revealing the unique molecular landscapes for each developmental mode and investigated the molecular clock and neurodegeneration pathways in young and old colonies and investigated the molecular clock and neurodegeneration pathways in young and old colonies. These results and the resources we developed are used by my lab and others to further study stem cell and immune cell properties during development, regeneration, transplantation, and aging.
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