Imperial College London
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Emeritus ProfessorKenMacLeod

Faculty of Medicine, National Heart & Lung Institute

Emeritus Professor of Cardiac Physiology
 
 
 
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Contact

 

+44 (0)20 7594 2734k.t.macleod

 
 
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Assistant

 

Miss Natasha Richmond +44 (0)20 7594 6457

 
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Location

 

336ICTEM buildingHammersmith Campus

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Summary

 

Publications

Citation

BibTex format

@article{Wang:2022:10.3390/cells11071171,
author = {Wang, BX and Nicastro, L and Couch, L and Kit-Anan, W and Downing, B and MacLeod, KT and Terracciano, CM},
doi = {10.3390/cells11071171},
journal = {Cells},
pages = {1171--1171},
title = {Extracellular vesicles from human cardiac fibroblasts modulate calcium cycling in human stem cell-derived cardiomyocytes},
url = {http://dx.doi.org/10.3390/cells11071171},
volume = {11},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Cardiac fibroblasts regulate the development of the adult cardiomyocyte phenotype and cardiac remodeling in disease. We investigate the role that cardiac fibroblasts-secreted extracellular vesicles (EVs) have in the modulation of cardiomyocyte Ca2+ cycling–a fundamental mechanism in cardiomyocyte function universally altered during disease. EVs collected from cultured human cardiac ventricular fibroblasts were purified by centrifugation, ultrafiltration and size-exclusion chromatography. The presence of EVs and EV markers were identified by dot blot analysis and electron microscopy. Fibroblast-conditioned media contains liposomal particles with a characteristic EV phenotype. EV markers CD9, CD63 and CD81 were highly expressed in chromatography fractions that elute earlier (Fractions 1–15), with most soluble contaminating proteins in the later fractions collected (Fractions 16–30). Human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) were treated with fibroblast-secreted EVs and intracellular Ca2+ transients were analyzed. Fibroblast-secreted EVs abbreviate the Ca2+ transient time to peak and time to 50% decay versus serum-free controls. Thus, EVs from human cardiac fibroblasts represent a novel mediator of human fibroblast-cardiomyocyte interaction, increasing the efficiency of hiPSC-CM Ca2+ handling.
AU  - Wang,BX
AU  - Nicastro,L
AU  - Couch,L
AU  - Kit-Anan,W
AU  - Downing,B
AU  - MacLeod,KT
AU  - Terracciano,CM
DO  - 10.3390/cells11071171
EP  - 1171
PY  - 2022///
SN  - 2073-4409
SP  - 1171
TI  - Extracellular vesicles from human cardiac fibroblasts modulate calcium cycling in human stem cell-derived cardiomyocytes
T2  - Cells
UR  - http://dx.doi.org/10.3390/cells11071171
UR  - https://www.mdpi.com/2073-4409/11/7/1171
UR  - http://hdl.handle.net/10044/1/96309
VL  - 11
ER  -
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