Defining Adult Stem Cell Function at Its Simplest: The Ability to Replace Lost Cells through Mitosis.

Defining Adult Stem Cell Function at Its Simplest: The Ability to Replace Lost Cells through Mitosis. Cell Stem Cell. 2019 Aug 01;25(2):174-183 Authors: Post Y, Clevers H Abstract Classic studies on hematopoiesis indicate that blood cell numbers are maintained by rare, hard-wired, transplantable stem cells (SCs). Subsequent studies in other organs have implicitly assumed that all SC hierarchies follow the design of the hematopoietic system. Lineage tracing techniques have revolutionized the study of solid tissue SCs. It thus appears that key characteristics of the hematopoietic SC hierarchy (rarity of SCs, specific marker expression, quiescence, asymmetric division, and unidirectional differentiation) are not generalizable to other tissues. In light of these insights, we offer a revised, generalizable definition of SC function: the ability to replace lost tissue through cell division. PMID: 31374197 [PubMed - in process]
Source: Cell Stem Cell - Category: Stem Cells Authors: Tags: Cell Stem Cell Source Type: research