Related Experiment Video
Updated: Oct 10, 2026

Induction and Diagnosis of Tumors in Drosophila Imaginal Disc Epithelia
Published on: July 25, 2017
Tel induces a G1 arrest and suppresses Ras-induced transformation
L V Rompaey1, M Potter, C Adams
1Department of Genetics, St. Jude Children's Research Hospital, Memphis, Tennessee, TN 38105, USA.
Abstract:
The Tel gene is a major target of translocations in leukemia and loss of heterozygosity is regularly observed for the non-translocated allele, thus supporting the notion that Tel is a tumor suppressor. Most tumor suppressors influence cellular proliferation, differentiation and cell death and thereby prevent oncogenic transformation and genetic instability. We found that overexpression of Tel retards proliferation of many cell types, primary cells and immortalized cells, by inducing a G1 arrest. Tel's block of cellular proliferation is rescued by high seeding densities. Furthermore, Tel suppressed Ras-mediated colony growth in soft agar and tumor formation in nude mice. The Pointed and DNA binding (DB) domains of Tel were required for all Tel-induced phenotypes.
Related Concept Videos
The Ras Gene
Ras is a superfamily...
Small GTPases - Ras and Rho
Three regulatory proteins control their activity:
MAPK Signaling Cascades
Negative Regulator Molecules
Abnormal Proliferation
The Ras Gene
Ras is a superfamily...

