Related Experiment Video
Updated: May 23, 2026
10:56
Procurement and Perfusion-Decellularization of Porcine Vascularized Flaps in a Customized Perfusion Bioreactor
Published on: August 1, 2022
The perigraft compartment is the dominant cellular source for decellularized tissue-engineered vascular graft
Siyuan Cheng1, Peng Lu1, Zhenyu He1
1Department of Vascular Surgery, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha 410011, China; Institute of Vascular Diseases, Central South University, 139Middle Remin Road, Changsha 410011, China.
Acta Biomaterialia
|May 21, 2026
Summary
Decellularized tissue-engineered vascular grafts (dTEVGs) are promising for hemodialysis access. This study reveals perigraft cells, not circulating ones, are the primary source for graft recellularization and regeneration.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Vascular Biology
Background:
- Decellularized tissue-engineered vascular grafts (dTEVGs) offer potential for hemodialysis access.
- Understanding the cellular origin of dTEVG recellularization is crucial for optimizing graft design.
Purpose of the Study:
- To investigate the cellular origin and temporal dynamics of infiltrating cell phenotypes in dTEVGs.
- To determine whether cells originate from the lumen or the perigraft compartment.
Main Methods:
- A rat arteriovenous graft model using dTEVGs was established.
- Surface-specific cytophobic barriers were employed to block cellular entry from defined compartments (luminal vs. abluminal).
- Temporal dynamics of cell infiltration and phenotype were mapped.
Main Results:
- Abluminal blockade significantly reduced cellular infiltration (96.7%) and collagen deposition.
- Luminal blockade had no significant effect on cellular infiltration.
- Perigraft-sourced cells demonstrated superior proliferative capacity, stemness, and pro-regenerative potential.
Conclusions:
- The perigraft compartment is the dominant source of cells for dTEVG recellularization.
- Perivascular niche engagement is critical for functional vascular regeneration.
- Findings guide the design of next-generation dTEVGs for improved hemodialysis access.
