Extracellular Matrix Molecule-Based Capture of Mesenchymal Stromal Cells Under Flow
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We present a method to capture mesenchymal stromal cells (MSCs) by adhesion to extracellular matrix (ECM) molecules under flow conditions. The technique simulates a physiological system and exploits the natural biological interactions of cells, through integrin receptors, with their ECM. The system offers an insight into how MSCs could be targeted/localized to the site of interest (graft) following intravenous injection.
Key wordsFibronectin Laminin Adhesion Mesenchymal stromal cell
This work was supported by the UK Engineering and Physical Sciences Research Council (EPSRC). The Bioimaging Facility microscopes used in this study were purchased with grants from the UK Biotechnology and Biological Sciences Research Council (BBSRC) and the Wellcome Trust, and the University of Manchester Strategic Fund. The Beckman Coulter Cyan ADP used in this study was purchased with a grant from Astra Zeneca. Special thanks to Dr. Peter March for his help with the microscopy, Dr. Christoph Ballestrem and Dr. Alex Carisey for their help with the ibidi pump system, and Mr. Mike Jackson for his help with the flow cytometry.
Mesenchymal stromal cells (MSCs) attachment on a 100 nM laminin -521 coated channel. MSCs begin to attach immediately on 100 nM laminin-521 coated channels after initiation of flow. The density of MSC attachment increases with time. The video is 2.5× the speed of real time and are generated from images from the first 6.5 min of a 10 min experiment (AVI 281,965 kb)
Mesenchymal stromal cells (MSCs) attachment on 100 nM fibronectin type III repeats 7–14 (FN III 7–14) coated channel. MSCs begin to attach on a 100 nM FN III 7–14 coated channel after 3 min following initiation of flow. The density of MSC attachment increases with time. The video is 2.5× the speed of real time and are generated from images from the first 6.5 min of a 10 min experiment (AVI 275,602 kb)
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