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Related Concept Videos

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Related Experiment Video

Updated: Aug 15, 2025

Reprogramming Primary Amniotic Fluid and Membrane Cells to Pluripotency in Xeno-free Conditions
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Expansion of human amniotic epithelial cells using condition cell reprogramming technology.

Aisha Naeem1,2, Muhammad Umer Choudhry3, Alex Kroemer4

  • 1Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA. anaeem@moph.gov.qa.

Human Cell
|December 31, 2022
PubMed
Summary

Conditionally Reprogrammed Cells (CRC) culture expands human amniotic epithelial cells (hAECs) ex vivo. This method maintains hAEC pluripotency and non-immunogenic markers, proving safe for potential clinical applications.

Keywords:
Amniotic epithelial stem cellsAmniotic stem cellsCell cultureHuman serumStem cell markers

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Isolation, Cryopreservation and Culture of Human Amnion Epithelial Cells for Clinical Applications
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Isolation, Cryopreservation and Culture of Human Amnion Epithelial Cells for Clinical Applications

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Area of Science:

  • Stem Cell Biology
  • Regenerative Medicine
  • Cell Therapy

Background:

  • Human amniotic epithelial cells (hAECs) possess multipotent differentiation capacity and non-immunogenic properties.
  • Clinical translation of hAECs is hindered by the lack of standardized, clinically reliable preparation and banking methods.
  • Ex vivo expansion is crucial for generating sufficient cell numbers for therapeutic applications.

Purpose of the Study:

  • To establish a standardized, clinically applicable method for ex vivo expansion of hAECs.
  • To evaluate the efficacy of the Conditionally Reprogrammed Cells (CRC) culture technique for hAEC expansion.
  • To assess the retention of key hAEC phenotypes, including pluripotency and non-immunogenicity, after CRC culture.

Main Methods:

  • hAECs were cultured using an optimized CRC protocol with xenogen-free human serum.
  • Cell proliferation and expression of pluripotent (OCT-4, SOX-2, NANOG) and non-immunogenic (CD80, CD86, HLA-G) markers were analyzed.
  • hAECs-CRC cells were engineered to express luciferase and GFP, then injected into immunodeficient and immunocompetent mice to assess in vivo tolerability and stability.

Main Results:

  • hAECs successfully proliferated for over 5 passages under CRC conditions.
  • Late-passage hAECs retained expression of pluripotent and non-immunogenic markers.
  • In vivo studies showed sustained cell presence and viability without inflammation or tumor formation in mice.

Conclusions:

  • The CRC approach provides a novel and effective method for expanding hAECs under humanized conditions.
  • CRC culture preserves the essential characteristics of hAECs, making them suitable for future clinical applications.
  • This standardized expansion method facilitates the translation of hAEC-based therapies into clinical studies.