Related Experiment Videos

Identification of cDNAs induced by the tumor suppressor Tsc2 gene using a conditional expression system in Tsc2

K Orimoto1, H Tsuchiya, J Sakurai

  • 1Department of Experimental Pathology, Cancer Institute, Tokyo, Japan.

Biochemical and Biophysical Research Communications
|July 2, 1998
PubMed

Insights

The tuberous sclerosis 2 (TSC2) gene acts as a tumor suppressor. Its activation in Eker rats influences cell cycle regulation and programmed cell death, suggesting a role in cancer development.

Area of Science:

  • Molecular Biology
  • Genetics
  • Cancer Research

Background:

  • Alterations in the tuberous sclerosis 2 (TSC2) gene are linked to dominantly inherited cancers in the Eker rat model.
  • The tumor suppressor function of TSC2 suggests its downstream targets mediate its biological roles.

Purpose of the Study:

  • To identify downstream genes regulated by the TSC2 gene.
  • To investigate the role of TSC2 in regulating cell cycle and cell survival in renal carcinomas.

Main Methods:

  • Subtractive hybridization was employed to identify TSC2-affected genes.
  • Tetracycline operator systems were used to regulate wild-type TSC2 gene expression in Eker renal carcinomas (RCs).

Main Results:

  • A set of downstream genes regulated by TSC2 was identified.
  • Expression of wild-type TSC2 in Eker RCs led to increased expression of genes associated with cell cycle arrest and programmed cell death.
  • Stress-induced genes were also found to be upregulated.

Conclusions:

  • TSC2 plays a role in the regulation of the cell cycle.
  • TSC2 may contribute to the control of cell survival pathways.
  • These findings elucidate potential mechanisms of tumor suppression by TSC2.

Related Concept Videos