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Type 1 diabetes patients increase CXCR4+ and CXCR7+ haematopoietic and endothelial progenitor cells with exercise, but the response is attenuated

Lookup NU author(s): Dr Guy Taylor, Andy Shaw, Kieran Smith, Tess Capper, Jadine Scragg, Dr Ayat Bashir, Dr Anneliese Flatt, Professor Emma Stevenson, Professor James Shaw, Dr Daniel WestORCiD



This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


© 2021, The Author(s).Exercise mobilizes angiogenic cells, which stimulate vascular repair. However, limited research suggests exercise-induced increase of endothelial progenitor cell (EPCs) is completely lacking in type 1 diabetes (T1D). Clarification, along with investigating how T1D influences exercise-induced increases of other angiogenic cells (hematopoietic progenitor cells; HPCs) and cell surface expression of chemokine receptor 4 (CXCR4) and 7 (CXCR7), is needed. Thirty T1D patients and 30 matched non-diabetes controls completed 45 min of incline walking. Circulating HPCs (CD34+, CD34+CD45dim) and EPCs (CD34+VEGFR2+, CD34+CD45dimVEGFR2+), and subsequent expression of CXCR4 and CXCR7, were enumerated by flow cytometry at rest and post-exercise. Counts of HPCs, EPCs and expression of CXCR4 and CXCR7 were significantly lower at rest in the T1D group. In both groups, exercise increased circulating angiogenic cells. However, increases was largely attenuated in the T1D group, up to 55% lower, with CD34+ (331 ± 437 Δcells/mL vs. 734 ± 876 Δcells/mL p = 0.048), CD34+VEGFR2+ (171 ± 342 Δcells/mL vs. 303 ± 267 Δcells/mL, p = 0.006) and CD34+VEGFR2+CXCR4+ (126 ± 242 Δcells/mL vs. 218 ± 217 Δcells/mL, p = 0.040) significantly lower. Exercise-induced increases of angiogenic cells is possible in T1D patients, albeit attenuated compared to controls. Decreased mobilization likely results in reduced migration to, and repair of, vascular damage, potentially limiting the cardiovascular benefits of exercise. Trial registration: ISRCTN63739203.

Publication metadata

Author(s): Taylor GS, Shaw A, Smith K, Capper TE, Scragg JH, Cronin M, Bashir A, Flatt A, Campbell MD, Stevenson EJ, Shaw JA, Ross M, West DJ

Publication type: Article

Publication status: Published

Journal: Scientific Reports

Year: 2021

Volume: 11

Issue: 1

Print publication date: 01/12/2021

Online publication date: 15/07/2021

Acceptance date: 25/06/2021

Date deposited: 06/08/2021

ISSN (electronic): 2045-2322

Publisher: Nature Research


DOI: 10.1038/s41598-021-93886-2


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Funder referenceFunder name
Diabetes Research and Wellness Foundation (SCA/OF/12/15) award to DW
philanthropic award to DW from the Francis James Bell Endowment Fund, Country Durham Community Foundation