Related Experiment Video
Updated: Jan 31, 2026
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Isolation of Endothelial Progenitor Cells from Human Umbilical Cord Blood
Published on: September 14, 2017
11.8K
Engineered M13 Nanofiber Accelerates Ischemic Neovascularization by Enhancing Endothelial Progenitor Cells
Jun Hee Lee1, Sung Wook Kim2, Seung Taek Ji2
11Department of Pharmacology and Toxicology, University of Alabama at Birmingham School of Medicine, Birmingham, AL 35294 USA.
Tissue Engineering and Regenerative Medicine
|January 4, 2019
Summary
Engineered M13 nanofibers carrying RGD and SDKP peptides enhance endothelial progenitor cell (EPC) function. This novel cell priming strategy promotes neovascularization and functional recovery in ischemic conditions.
Area of Science:
- Biotechnology
- Regenerative Medicine
- Vascular Biology
Background:
- Vascular dysfunction leads to ischemic diseases.
- Endothelial progenitor cells (EPCs) show therapeutic potential but suffer from ischemia-induced cell death.
- Existing therapies face limitations in promoting effective neovascularization.
Purpose of the Study:
- To develop a cell-targeted peptide delivery and priming system to enhance EPC-based neovascularization.
- To engineer M13 bacteriophage nanofibers displaying functional motifs for improved EPC bioactivity.
- To evaluate the therapeutic efficacy of primed EPCs in a preclinical ischemia model.
Main Methods:
- Engineering M13 bacteriophage nanofibers displaying RGD and SDKP motifs.
- Modifying M13 nanofibers on minor and major coat proteins with specific peptides.
- Priming EPCs with the engineered M13 nanofibers.
- Evaluating EPC proliferation, migration, and tube formation in vitro.
- Assessing functional recovery and neovascularization in a murine hindlimb ischemia model.
Main Results:
- Engineered M13 nanofibers significantly enhanced EPC proliferation, migration, and tube formation.
- Transplantation of RGD and SDKP-primed EPCs facilitated functional recovery in a murine hindlimb ischemia model.
- The M13 nanofiber system demonstrated effectiveness in promoting EPC bioactivity and neovessel regeneration.
Conclusions:
- M13 nanofiber-based peptide delivery and priming is a novel strategy to enhance EPC function.
- This approach shows promise for stem and progenitor cell therapy in cardiovascular ischemic diseases.
- Dual functional motifs on M13 nanofibers offer a new avenue for regenerative medicine.
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