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Model for Study of Glomerular Disorders: Conditionally-Immortalized Mouse Podocyte Cell Line with Tet-on-Regulated Gene Expressi

Posted Feb 28 2007 4:00pm

Description of Invention:
Podocytes, cells of the visceral epithelium in the kidneys, are a key component of the glomerular filtration barrier. As such, they play a vital role in glomerular disorders, which are a major cause of chronic kidney disease. Examples of these disorders include focal segmental glomerulosclerosis, membranous glomerulonephritis, minimal change disease, and diabetic nephropathy.

The inventors have developed a conditionally-immortalized mouse podocyte cell line with tightly controlled conditional gene expression. The cell line has been conditionally immortalized through the introduction of the H-2Kb-tsA58 transgene, which is a temperature-sensitive mutant of the SV40T antigen. Inducible gene expression is tightly controlled through two introduced transgenes, podocin-rtTA and CMV-tTS, that produce a "Tet-on" system wherein gene expression is induced by tetracycline or doxycycline. The combination of the two transgenes for Tet-on gene expression has resulted in much tighter regulation and lower background expression compared to cells carrying the podocin-rtTA transgene alone.

  • Model system for study of glomerular disorders
  • Model system for podocyte cell biology

Jeffrey B Kopp (NIDDK)

Patent Status:
HHS, Reference No. E-049-2007/0

Relevant Publication:
  1. T Shigehara, C Zaragoza, C Kitiyakara, H Takahashi, H Lu, M Moeller, LB Holzman, and JB Kopp. Inducible podocyte-specific gene expression in transgenic mice. J Am Soc Nephrol. 2003 Aug;14(8):1998-2003. [ PubMed abs ]

Licensing Status:
This technology is available as a research tool under a Biological Materials License.

Collaborative Research Opportunity:
The NIDDK Kidney Disease Section is seeking statements of capability or interest from parties interested in collaborative research to further develop, evaluate, or commercialize a model system for the study of glomerular disorders. Please contact Jeffrey B. Kopp, M.D., by phone (301/594-3403), fax (301/402-0014) or e-mail ( ) for more information.

Devices/Instrumentation - Research Tools and Materials
Internal Medicine
Internal Medicine - Research Materials
Rare Diseases

For Additional Information Please Contact:
Suryanarayana Vepa Ph.D.
NIH Office of Technology Transfer
6011 Executive Blvd. Suite 325,
Rockville, MD 20852
United States
Phone: 301-435-5020
Fax: 301-402-0220

Ref No: 1503

Updated: 03/2007

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