Fate of Hematopoiesis During Aging. What Do We Really Know, and What are its Implications?

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2020-11-03
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American English
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Springer Nature
Abstract

There is an ongoing shift in demographics such that older persons will outnumber young persons in the coming years, and with it age-associated tissue attrition and increased diseases and disorders. There has been increased information on the association of the aging process with dysregulation of hematopoietic stem (HSC) and progenitor (HPC) cells, and hematopoiesis. This review provides an extensive up-to date summary on the literature of aged hematopoiesis and HSCs placed in context of potential artifacts of the collection and processing procedure, that may not be totally representative of the status of HSCs in their in vivo bone marrow microenvironment, and what the implications of this are for understanding aged hematopoiesis. This review covers a number of interactive areas, many of which have not been adequately explored. There are still many unknowns and mechanistic insights to be elucidated to better understand effects of aging on the hematopoietic system, efforts that will take multidisciplinary approaches, and that could lead to means to ameliorate at least some of the dysregulation of HSCs and HPCs associated with the aging process.

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This article is made available for unrestricted research re-use and secondary analysis in any form or be any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic.
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Broxmeyer, H. E., Liu, Y., Kapur, R., Orschell, C. M., Aljoufi, A., Ropa, J. P., Trinh, T., Burns, S., & Capitano, M. L. (2020). Fate of Hematopoiesis During Aging. What Do We Really Know, and What are its Implications? Stem Cell Reviews and Reports, 16, 1020–1048. https://doi.org/10.1007/s12015-020-10065-y
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1550-8943
1558-6804
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Some of the studies reported in this review, and the writing of this review were supported by the following U.S. Public Health Grants from the National Institutes of Health to H.E.B.: R35 HL139599 (Outstanding Investigator Award), R01 DK109188, U54 DK106846; A.A., J.P.R., and T.T. were supported by T32 DK007519 to H.E.B. R01 HL150624, R56 DK119524, R56 AG052501, DoD W81XWH-13-1-0187, DoD W81XWH-18-1-0265 and DoD W81XWH-19-1-0575, the Leukemia and Lymphoma Society Translational Research Program award 6581-20 and the St. Baldrick’s Foundation Scholar Award to Y.L. MLC was supported by R01 DK109188. CO was supported by National Institute of Allergy and Infectious Diseases (NIAID) contracts HHSN266200500043C and HHSN272201000046C and grants 1U01AI107340-01 and 2R44 AI088288-03A1, National Institute on Aging (NIA) grant R01AG046246-01, and Department of Defense grants PR140896, PR141527, and PR140433P1.
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