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On how Rac controls hematopoietic stem cell activity
Abstract
Rac GTPases form part of the family of Rho small GTPases. Rac GTPases, like other Rho family GTPases, are key molecular switches controlling the transduction of external signals to cytoplasmic and nuclear effectors. The development of genetic and pharmacological tools has allowed a more precise definition of the specific roles of Rac GTPases in hematopoietic stem cells (HSCs). Our current knowledge has enabled dissection of their specific and redundant roles. Rac GTPases are now known to be crucial in the response of HSCs to the hematopoietic microenvironment cues. This review will briefly summarize the known HSC functions that are regulated by Rac GTPases, focusing on adhesion, migration, retention, proliferation, and survival, and how Rac relates to the physiological functions of HSC. The development of small molecule inhibitors with the ability to interfere with Rac GTPase activation offers new therapeutic strategies to manipulate the function of HSC in vivo and ex vivo.
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“Proteins of the RAC family have been identified as crucial mediators of the interactions between hematopoietic stem cells (HSCs) and their microenvironment [20,21].”
From Mitochondrial Dysfunction in Human Leukemic Stem/Progenitor Cells upon Loss of RAC2 (2015) · cites this paper as [21]
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Rac GTPases differentially integrate signals regulating hematopoietic stem cell localization
Cancelas, J. A., Lee, A. W., Prabhakar, R., Stringer, K. F., Zheng, Y., & Williams, D. A. (2005) · Nature Medicine · doi:10.1038/nm1274 · Cited by 278
Self-citationRac and Cdc42 GTPases control hematopoietic stem cell shape, adhesion, migration, and mobilization
Yang, F.-C., Atkinson, S. J., Gu, Y., Borneo, J. B., Roberts, A. W., Zheng, Y., Pennington, J., & Williams, D. A. (2001) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.101546898 · Cited by 201
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Cited by
Mitochondrial Dysfunction in Human Leukemic Stem/Progenitor Cells upon Loss of RAC2
Capala, M. E., Maat, H., Bonardi, F., van den Boom, V., Kuipers, J., Vellenga, E., Giepmans, B. N. G., & Schuringa, J. J. (2015) · PLOS ONE · doi:10.1371/journal.pone.0128585 · Cited by 20
Metadata
- Authors
- Cancelas, J. A.
- Venue
- Transfusion
- Publisher
- Wiley
- Published
- 2011-11
- Volume
- 51
- Issue
- s4
- ISSN
- 0041-1132
- 1537-2995
- PMC
- PMC3308685
- Cited by
- 6
- References
- 4
- Language
- en
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