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Related Experiment Video

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In Vitro Culture of Epithelial Cells from Different Anatomical Regions of the Human Amniotic Membrane
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A simple alkaline method for decellularizing human amniotic membrane for cell culture.

Mehrnoosh Saghizadeh1, Michael A Winkler, Andrei A Kramerov

  • 1Eye Program, Cedars-Sinai Medical Center, Los Angeles, California, United States of America ; Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, California, United States of America ; Departments of Biomedical Sciences, Surgery, and Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, California, United States of America.

Plos One
|November 16, 2013
PubMed
Summary

A novel sodium hydroxide (NaOH) method efficiently decellularizes human amniotic membrane for limbal stem cell culture. This faster, standardized approach preserves membrane integrity and supports stem cell growth for transplantation.

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Area of Science:

  • Regenerative Medicine
  • Ophthalmology
  • Biomaterials Science

Background:

  • Human amniotic membrane is crucial for culturing limbal epithelial stem cells for treating limbal stem cell deficiency.
  • Current decellularization methods (EDTA, enzymes, scraping) are slow, variable, and can damage the membrane.

Purpose of the Study:

  • To develop a simple, fast, and reliable method for decellularizing human amniotic membrane.
  • To evaluate the efficacy and safety of sodium hydroxide (NaOH) for amniotic membrane decellularization.

Main Methods:

  • Treatment of amniotic membrane with 0.5 M NaOH for rapid cell removal.
  • Washing the membrane in a neutral buffer post-treatment.
  • Comparison with EDTA, mechanical scraping, and n-heptanol/EDTA methods.

Main Results:

  • NaOH treatment achieved thorough and uniform cell removal in under a minute.
  • Decellularized membrane showed no perforations and preserved key basement membrane components.
  • NaOH-treated membrane supported the growth of limbal epithelial cells, corneal epithelial cells, and induced pluripotent stem cells.

Conclusions:

  • 0.5 M NaOH is a superior method for decellularizing human amniotic membrane.
  • This standardized, efficient technique enhances preparations for in vitro limbal stem cell expansion prior to transplantation.