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Microenvironmental contributions to hematopoietic stem cell aging

Hematopoietic stem cell (HSC) aging was originally thought to be essentially an HSC-autonomous process, which is the focus of another review in the same issue of Haematologica. However, studies on the microenvironment that maintains and regulates HSC (HSC niche) over the past 20 years have suggested...

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Autores principales: Ho, Ya-Hsuan, Méndez-Ferrer, Simón
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Ferrata Storti Foundation 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6939521/
https://www.ncbi.nlm.nih.gov/pubmed/31806690
http://dx.doi.org/10.3324/haematol.2018.211334
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author Ho, Ya-Hsuan
Méndez-Ferrer, Simón
author_facet Ho, Ya-Hsuan
Méndez-Ferrer, Simón
author_sort Ho, Ya-Hsuan
collection PubMed
description Hematopoietic stem cell (HSC) aging was originally thought to be essentially an HSC-autonomous process, which is the focus of another review in the same issue of Haematologica. However, studies on the microenvironment that maintains and regulates HSC (HSC niche) over the past 20 years have suggested that microenvironmental aging contributes to declined HSC function over time. The HSC niches comprise a complex and dynamic molecular network of interactions across multiple cell types, including endothelial cells, mesenchymal stromal cells, osteoblasts, adipocytes, neuroglial cells and mature hematopoietic cells. Upon aging, functional changes in the HSC niches, such as microenvironmental senescence, imbalanced bone marrow mesenchymal stromal cell differentiation, vascular remodeling, changes in adrenergic signaling and inflammation, coordinately and dynamically influence the fate of HSC and their downstream progeny. The end result is lymphoid deficiency and myeloid skewing. During this process, aged HSC and their derivatives remodel the niche to favor myeloid expansion. Therefore, the crosstalk between HSC and the microenvironment is indispensable for the aging of the hematopoietic system and might represent a therapeutic target in age-related pathological disorders.
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spelling pubmed-69395212020-01-06 Microenvironmental contributions to hematopoietic stem cell aging Ho, Ya-Hsuan Méndez-Ferrer, Simón Haematologica Review Article Hematopoietic stem cell (HSC) aging was originally thought to be essentially an HSC-autonomous process, which is the focus of another review in the same issue of Haematologica. However, studies on the microenvironment that maintains and regulates HSC (HSC niche) over the past 20 years have suggested that microenvironmental aging contributes to declined HSC function over time. The HSC niches comprise a complex and dynamic molecular network of interactions across multiple cell types, including endothelial cells, mesenchymal stromal cells, osteoblasts, adipocytes, neuroglial cells and mature hematopoietic cells. Upon aging, functional changes in the HSC niches, such as microenvironmental senescence, imbalanced bone marrow mesenchymal stromal cell differentiation, vascular remodeling, changes in adrenergic signaling and inflammation, coordinately and dynamically influence the fate of HSC and their downstream progeny. The end result is lymphoid deficiency and myeloid skewing. During this process, aged HSC and their derivatives remodel the niche to favor myeloid expansion. Therefore, the crosstalk between HSC and the microenvironment is indispensable for the aging of the hematopoietic system and might represent a therapeutic target in age-related pathological disorders. Ferrata Storti Foundation 2020-01 /pmc/articles/PMC6939521/ /pubmed/31806690 http://dx.doi.org/10.3324/haematol.2018.211334 Text en Copyright© 2020 Ferrata Storti Foundation Material published in Haematologica is covered by copyright. All rights are reserved to the Ferrata Storti Foundation. Use of published material is allowed under the following terms and conditions: https://creativecommons.org/licenses/by-nc/4.0/legalcode. Copies of published material are allowed for personal or internal use. Sharing published material for non-commercial purposes is subject to the following conditions: https://creativecommons.org/licenses/by-nc/4.0/legalcode, sect. 3. Reproducing and sharing published material for commercial purposes is not allowed without permission in writing from the publisher.
spellingShingle Review Article
Ho, Ya-Hsuan
Méndez-Ferrer, Simón
Microenvironmental contributions to hematopoietic stem cell aging
title Microenvironmental contributions to hematopoietic stem cell aging
title_full Microenvironmental contributions to hematopoietic stem cell aging
title_fullStr Microenvironmental contributions to hematopoietic stem cell aging
title_full_unstemmed Microenvironmental contributions to hematopoietic stem cell aging
title_short Microenvironmental contributions to hematopoietic stem cell aging
title_sort microenvironmental contributions to hematopoietic stem cell aging
topic Review Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6939521/
https://www.ncbi.nlm.nih.gov/pubmed/31806690
http://dx.doi.org/10.3324/haematol.2018.211334
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