Ryk modulates the niche activity of mesenchymal stromal cells by fine-tuning canonical Wnt signaling

Autor: Seon-Yeong Jeong, Jungmook Lyu, Jin-A Kim, Il-Hoan Oh
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Experimental and Molecular Medicine, Vol 52, Iss 7, Pp 1140-1151 (2020)
Druh dokumentu: article
ISSN: 1226-3613
2092-6413
DOI: 10.1038/s12276-020-0477-y
Popis: Hematology: Preserving a stable home for stem cells Steady production of immune and blood cells depends on a signaling protein that helps maintain stable stem cell populations within the bone marrow. Hematopoietic stem cells (HSCs), which give rise to blood cells, reside within a supportive “niche” surrounded by mesenchymal stromal cells (MSCs), with extensive communication between the two populations. Researchers led by Il-Hoan Oh at The Catholic University of Korea, Seoul, have now identified a mechanism that MSCs employ to stabilize the niche environment through fine-tuning the signaling intensity of Wnt. Oh and colleagues focused on a signaling pathway that controls the undifferentiated state of HSCs, and showed that these signals are specifically modulated by an MSC protein known as Ryk. Without Ryk, MSCs can no longer promote HSC proliferation. However, when these signals are excessively strong, Ryk helps suppress proliferation to keep HSC numbers under control.
Databáze: Directory of Open Access Journals
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