Biomimetic Electroconductive Nanofibrous Matrices for Skeletal Muscle Regenerative Engineering

  • Xiaoyan Tang
  • Nikoo Saveh-Shemshaki
  • Ho-Man Kan
  • Yusuf Khan
  • Cato T. LaurencinEmail author
Original Research



The regeneration of the muscles of the rotator cuff represents a grand challenge in musculoskeletal regenerative engineering. Several types of matrices have been proposed for skeletal muscle regeneration. However, biomimetic matrices to promote muscle regeneration and mimic native muscle tissue have not been successfully engineered. Besides topographical cues, an electrical stimulus may serve as a critical cue to improve interactions between materials and cells in scenarios fostering muscle regeneration. In this in vitro study, we engineered a novel stimulus-responsive conductive nanocomposite matrix and studied its ability to regulate muscle cell adhesion, proliferation, and differentiation. Electroconductive nanocomposite matrices demonstrated tunable conductivity and biocompatibility. Under the optimum concentration of conductive material, the matrices facilitated muscle cell adhesion, proliferation, and differentiation. Importantly, aligned conductive fibrous matrices were effective in promoting myoblast differentiation by upregulation of myogenic markers. The results demonstrated a promising potential of aligned conductive fibrous matrices for skeletal muscle regenerative engineering.

Lay Summary

Around 40% of the human body mass consists of skeletal muscle. Musculoskeletal disorders such as muscle atrophy and fatty infiltration after rotator cuff injury lead to disability and pain and increase the rate of retear after rotator cuff surgery. The study showed the potential of novel engineered matrix to regenerate skeletal muscle by utilizing conductive material and nanofiber-based matrices. The incorporation of conductive material and aligned nanofibers as electrical and topographical cues significantly impacted cell viability and differentiation to support muscle regeneration.

Future Work

The study demonstrated that electroconductive nanocomposite matrix can favorably modulate myoblast proliferation and differentiation. Future study will investigate the in vivo efficacy of the engineered matrix using a rat rotator cuff tear model to understand the ability of the engineered matrix in reducing the fatty infiltration.


Muscle regeneration Nanofibrous matrices Conductive material Electrospinning 


Funding Information

This work was funded by the NSF EFRI 1332329, NIH DP1AR068147, and NIH RO1 AR063698.

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no competing interests.

Supplementary material

40883_2019_136_MOESM1_ESM.docx (5.4 mb)
ESM 1 (DOCX 5527 kb)


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Copyright information

© The Regenerative Engineering Society 2019

Authors and Affiliations

  1. 1.Connecticut Convergence Institute for Translation in Regenerative EngineeringUniversity of Connecticut HealthFarmingtonUSA
  2. 2.Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering SciencesUniversity of Connecticut Health CenterFarmingtonUSA
  3. 3.Department of Materials Science and EngineeringUniversity of ConnecticutStorrsUSA
  4. 4.Department of Orthopaedic SurgeryUniversity of Connecticut Health CenterFarmingtonUSA
  5. 5.Department of Biomedical EngineeringUniversity of ConnecticutStorrsUSA
  6. 6.Department of Chemical & Biomolecular EngineeringUniversity of ConnecticutStorrsUSA
  7. 7.Department of Craniofacial Sciences, School of Dental MedicineUniversity of Connecticut HealthFarmingtonUSA

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