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Related Experiment Videos

Immortalized bone-marrow derived pig endothelial cells.

J D Seebach1, M K Schneider, C A Comrack

  • 1Department of Internal Medicine, University Hospital Zürich, Switzerland. klinseeb@usz.unizh.ch

Xenotransplantation
|February 24, 2001
PubMed
Summary

Researchers developed immortalized porcine endothelial cell (EC) lines for studying human anti-pig immune responses. These cell lines, 2A2 and PEDSV.15, mimic primary EC and are valuable tools for xenotransplantation research.

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Area of Science:

  • Biotechnology
  • Immunology
  • Cell Biology

Background:

  • Primary porcine endothelial cells (EC) have limited lifespan, hindering in vitro studies.
  • Studying xenogeneic human anti-pig immune responses requires stable EC models.

Purpose of the Study:

  • To create immortalized porcine microvascular and macrovascular EC lines for in vitro research.
  • To characterize these cell lines for their EC phenotype, immune marker expression, and functional similarity to primary EC.

Main Methods:

  • Immortalization of porcine aortic and bone-marrow-derived EC using a modified SV40 large T vector.
  • Characterization via phenotype analysis (vWF, LDL receptors), ultrastructure, flow cytometry (SLA class I/II), Northern blot (CD34), and xenoantigen detection.
  • Assessment of gene transfer efficiency and functional assays (adhesion, cytotoxicity).

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Main Results:

  • Established immortalized EC lines (2A2, PEDSV.15) with unlimited growth and EC phenotype.
  • Demonstrated constitutive SLA class I expression and inducible SLA class II expression.
  • Confirmed functional similarity to primary EC in adhesion and cytotoxicity assays, and successful gene transfer.

Conclusions:

  • Immortalized porcine EC lines (2A2 and PEDSV.15) are robust tools for in vitro studies.
  • These cell lines facilitate research into human immune responses against porcine endothelial cells.
  • Valuable for xenotransplantation research, modeling human cellular and humoral immunity against pig EC.