# Biomimetic Matrix-Based Multiphasic System for Rotator Cuff Repair

> **NIH NIH R21** · UNIVERSITY OF PENNSYLVANIA · 2020 · $213,895

## Abstract

Project Summary
 Rotator cuff tendon injury is a very most common musculoskeletal injury, with over 3 million injuries being
treated in the United States and European Union each year. These injuries have limited healing and repair
potential due to poor vascularization, preventing adequate delivery of nutrients and tendon cells to produce
new tissue. Recently, many tissue engineering approaches have been introduced to repair rotator cuff injuries.
However, not many products have succeeded due to the lack of the currently available biomaterials. To further
development in this area and overcome limitations with current devices, we propose a biomimetic matrix
based-multiphasic scaffold designed to be used in conjunction with existing suture anchors to enhance repair
and regeneration of the rotator cuff enthesis. In this proposal, further, we will perform in vitro evaluations of
cytocompatibility of the scaffolds, and evaluate the in vivo performance of the scaffolds using a small animal
rotator cuff repair model. Aim 1 will determine optimal multiphasic scaffold parameters to promote zone-
specific enthesis tissue formation in rotator cuff. Aim 2 will evaluate the biological performances of zone-
specific multiphasic scaffolds using a co-culture model and an animal rotator cuff repair model. This data will
provide valuable references for our future design of a large animal model for translational research and
commercialization. Finally, this study will advance a novel multiphasic biomaterial scaffold towards clinical
implementation for treatment of rotator cuff tears with the potential for rapid translation to clinical trials and
practice.

## Key facts

- **NIH application ID:** 10039972
- **Project number:** 1R21AR077700-01
- **Recipient organization:** UNIVERSITY OF PENNSYLVANIA
- **Principal Investigator:** Su Chin Heo
- **Activity code:** R21 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 2020
- **Award amount:** $213,895
- **Award type:** 1
- **Project period:** 2020-08-01 → 2022-07-31

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/10039972

## Citation

> US National Institutes of Health, RePORTER application 10039972, Biomimetic Matrix-Based Multiphasic System for Rotator Cuff Repair (1R21AR077700-01). Retrieved via AI Analytics 2026-05-24 from https://api.ai-analytics.org/grant/nih/10039972. Licensed CC0.

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