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Laser-Induced Graphene: A Promising Conductive Platform for Cell Culture.

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Laser-induced graphene (LIG) substrates promote cardiomyocyte maturation for tissue engineering. This sustainable, conductive material advances cardiac regenerative therapies by improving in vitro models.

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Cardiovascular Research

Background:

  • Cardiovascular mortality necessitates novel therapeutic strategies.
  • Cardiomyocyte (CM)-based tissue engineering (TE) shows promise for in vitro models.
  • Immature CM phenotype in engineered tissues limits therapeutic efficacy.

Purpose of the Study:

  • To bioengineer a laser-induced graphene (LIG) substrate.
  • To investigate LIG's conductive and anisotropic properties for CM maturation.
  • To assess LIG's potential for developing advanced in vitro cardiac models.

Main Methods:

  • Fabrication of LIG using CO2 laser and Parylene-C precursor.
  • Culture of stem cells (SCs) and SC-derived embryoid bodies (EBs) on LIG.
  • Evaluation of cell viability, metabolic activity, morphology, and protein expression via immunofluorescence and electron microscopy.

Main Results:

  • SCs and EBs maintained viability and metabolic activity on LIG substrates.
  • EB-derived CM exhibited spontaneous contraction and cardiac-specific protein expression.
  • LIG substrates supported SC culture and functional CM differentiation.

Conclusions:

  • LIG substrates are biocompatible and support SC differentiation into functional CM.
  • LIG offers a sustainable, cost-effective alternative to conventional graphene for TE.
  • LIG shows significant potential for advancing cardiac regenerative therapies and in vitro models.