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Isolation and characterisation of mesenchymal stem cells from rat bone marrow and the endosteal niche: A comparative study

Yusop, Norhayati, Battersby, Paul, Alraies, Amr, Sloan, Alastair J, Moseley, Ryan and Waddington, Rachel J. 2018. Isolation and characterisation of mesenchymal stem cells from rat bone marrow and the endosteal niche: A comparative study. Stem Cells International , 6869128. 10.1155/2018/6869128

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Within bone, mesenchymal stromal cells (MSCs) exist within the bone marrow stroma (BM-MSC) and the endosteal niche, as cells lining compact bone (CB-MSCs). This study isolated and characterised heterogeneous MSC populations from each niche and subsequently investigated the effects of extensive cell expansion, analysing population doublings (PDs)/cellular senescence, colony-forming efficiencies (CFEs), MSC cell marker expression, and osteogenic/adipogenic differentiation. CB-MSCs and BM-MSCs demonstrated similar morphologies and PDs, reaching 100 PDs. Both populations exhibited consistent telomere lengths (12–17 kb), minimal senescence, and positive telomerase expression. CB-MSCs (PD15) had significantly lower CFEs than PD50. CB-MSCs and BM-MSCs both expressed MSC (CD73/CD90/CD105); embryonic (Nanog) and osteogenic markers (Runx2, osteocalcin) but no hematopoietic markers (CD45). CB-MSCs (PD15) strongly expressed Oct4 and p16INK4A. At early PDs, CB-MSCs possessed a strong osteogenic potency and low potency for adipogenesis, whilst BM-MSCs possessed greater overall bipotentiality for osteogenesis and adipogenesis. At PD50, CB-MSCs demonstrated reduced potency for both osteogenesis and adipogenesis, compared to BM-MSCs at equivalent PDs. This study demonstrates similarities in proliferative and mesenchymal cell characteristics between CB-MSCs and BM-MSCs, but contrasting multipotentiality. Such findings support further comparisons of human CB-MSCs and BM-MSCs, facilitating selection of optimal MSC populations for regenerative medicine purposes.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Dentistry
Publisher: Hindawi Publishing Corporation
ISSN: 1687-9678
Related URLs:
Date of First Compliant Deposit: 23 November 2017
Date of Acceptance: 5 November 2017
Last Modified: 25 Nov 2020 07:50

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