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Related Concept Videos

Formation of Muscle Fibers from Myoblasts01:13

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Related Experiment Video

Updated: Jul 9, 2025

Author Spotlight: Investigating Cellular and Molecular Dynamics During Muscle Regeneration Using Cutting-Edge Single-Cell Technologies
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Spontaneous Alignment of Myotubes Through Myogenic Progenitor Cell Migration.

Lauren E Mehanna1, Adrianna R Osborne1, Charlotte A Peterson2

  • 1Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky, USA.

Tissue Engineering. Part A
|November 29, 2023
PubMed
Summary

Researchers developed a novel method to align myogenic progenitor cells (MPCs) for muscle tissue engineering. This technique leverages natural cell migration to form aligned myotubes, addressing needs in large-volume muscle injury repair.

Keywords:
biotin–streptavidincell adhesioncell migrationcell patterningmyotube alignmentskeletal muscle

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Area of Science:

  • Regenerative Medicine
  • Tissue Engineering
  • Skeletal Muscle Biology

Background:

  • Large-volume muscle injuries disrupt muscle fibers and connective tissue, hindering myogenic progenitor cell (MPC) repair.
  • Clinical need exists for rapid fabrication of large muscle tissue constructs for injury site integration.
  • Current myotube alignment strategies often require complex microfabrication or lengthy orientation periods.

Purpose of the Study:

  • To develop a method for rapid and functional alignment of myogenic progenitor cells (MPCs) for muscle tissue engineering.
  • To utilize the natural migratory behavior of MPCs for guided alignment and myotube formation.
  • To create a robust MPC patterning tool that does not interfere with natural cellular functions.

Main Methods:

  • Exploited the natural tendency of MPCs to migrate and align perpendicular to open boundaries.
  • Utilized biotin-streptavidin adhesion for temporary, precise positioning of MPCs on collagen I substrates.
  • Prepositioned MPCs in linear patterns with small gaps to initiate alignment and myotube formation across gaps.

Main Results:

  • MPCs demonstrated unidirectional migration and alignment perpendicular (90°) to the initial biotin-streptavidin patterns.
  • Aligned myotubes were successfully formed across gaps, indicating successful MPC patterning.
  • Immunocytochemistry confirmed myosin heavy chain expression in differentiated myotubes, a marker of skeletal muscle differentiation.

Conclusions:

  • Leveraging MPCs' natural migratory behavior provides a robust strategy for myotube alignment without complex fabrication.
  • Biotin-streptavidin temporary patterning enables rapid and specific cell positioning, facilitating functional muscle construct development.
  • This approach offers a promising tool for engineering muscle tissue for large-volume injuries by harnessing inherent cellular regenerative capabilities.