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Development of optically sensitive liver cells.

Kiran Yellappa Vajanthri1, Parul Yadav1, Suruchi Poddar1

  • 1Tissue Engineering and Biomicrofluidics Laboratory, School of Biomedical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, Uttar Pradesh, India.

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Summary
This summary is machine-generated.

Researchers incorporated light-sensitive channelrhodopsin-2 (ChR2) into human liver cancer cells (HepG2). This optogenetic technique enables light-controlled cellular function, opening new avenues for liver research and drug testing.

Keywords:
Channelrhodopsin-2HepG2OptogeneticsPlasmidTransfection

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Area of Science:

  • Optogenetics
  • Cellular Engineering
  • Biotechnology

Background:

  • Optogenetics utilizes optics and genetic engineering to control cellular functions.
  • Channelrhodopsin-2 (ChR2) is a light-gated ion channel typically found in excitable cells.

Purpose of the Study:

  • To incorporate ChR2 into human hepatocellular carcinoma (HepG2) cells.
  • To establish a method for light-inducible control of HepG2 cell function.
  • To explore potential applications in liver research and drug development.

Main Methods:

  • Liposomal transfection of HepG2 cells using the AAV-CAG-ChR2-GFP plasmid.
  • Isolation of plasmid DNA from E. coli XL 10 gold bacteria.
  • Quantification of DNA concentration and assessment of cell transfection via fluorescence intensity.

Main Results:

  • Successfully transfected HepG2 cells with ChR2-GFP, achieving a transfection rate of 41.26%.
  • Demonstrated a significant difference in fluorescence intensity between transfected and control cells (p < 0.05).
  • Optimized a methodology for producing light-controllable transfected HepG2 cells.

Conclusions:

  • The study provides an optimized method for optogenetic manipulation of HepG2 cells.
  • ChR2 expression in HepG2 cells offers potential for modulating intracellular cation concentrations and cellular functions.
  • Transfected HepG2 cells can be utilized in co-culture models for toxicological and pharmacological studies, including liver spheroid formation.