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Accelerated telomere shortening following allogeneic transplantation is independent of the cell source and occurs within the first year post transplant

Lookup NU author(s): Professor Graham Jackson, Dr David Milligan


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Telomere shortening has been documented in the blood cells of recipients of allogeneic bone marrow transplants compared with their donors. Allogeneic peripheral blood progenitor cells (PBPCs) have been increasingly used as an alternative to bone marrow. Their advantages include earlier engraftment and immune reconstitution following transplantation. We have measured telomere length of neutrophils and T cells in fully engrafted recipients of allogeneic bone marrow (n = 19) and allogeneic PBPC (n=17) and also measured sequential telomere length in four patients after transplantation. Overall, significant telomere shortening occurred in recipients in neutrophils (0.3 kb, P<0.001) and T cells (0.2 kb, P = 0.045), The data demonstrate that first, the degree of shortening was the same for BM and PBPC transplants and was not related to the time taken to engraft neutrophils and platelets and second, telomere shortening occurs in the first year post transplant without further shortening during the period of observation. These data suggest that the superiority of engraftment seen in PBPC transplants is independent of telomere shortening and other mechanisms such as homing or seeding may be more important.

Publication metadata

Author(s): Robertson JD, Testa NG, Russell NH, Jackson G, Parker AN, Milligan DW, Stainer C, Chakrabarti S, Dougal M, Chopra R

Publication type: Article

Publication status: Published

Journal: Bone Marrow Transplantation

Year: 2001

Volume: 27

Issue: 12

Pages: 1283-1286

ISSN (print): 0268-3369

ISSN (electronic): 1476-5365

Publisher: Nature Publishing Group


DOI: 10.1038/sj.bmt.1703069


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