A hotspot mutation targeting the R-RAS2 GTPase acts as a potent oncogenic driver in a wide spectrum of tumors

Isabel Fernández-Pisonero
Universidad de Salamanca
January 1, 2022
Cell Rep
https://pubmed.ncbi.nlm.nih.gov/35294890

This article is currently being updated. View its version on PubMed.

https://pubmed.ncbi.nlm.nih.gov/35294890

Research summary

This study explores the oncogenic effects of the human RRAS2 Q72L mutation. Using a Rosa26 Knockin mouse with FLEx-controlled expression of the human RRAS2^Q72L gene, activated by tamoxifen-inducible Cre-ERT2, researchers observed the development of multiple tumor types. Tumors were dependent on mTORC1 signaling, but independent of PI3K and MEK, identifying selective vulnerabilities in RRAS2-driven cancers.

Key outcome of the study

Human RRAS2 Q72L mutation is a strong oncogenic driver that induces a spectrum of tumors and signals predominantly through mTORC1, offering specific therapeutic targets.

Model

Human RRAS2^Q72L Knockin mouse model using FLEx technology inserted at the Rosa26 locus; tamoxifen-inducible expression via Cre-ERT2 system.

TARGET:
RRAS2
TC21

Keywords

Oncology, Tumorigenesis, mTORC1 pathway, RAS signaling, T-cell leukemia

Technical specifications

Knockin, Human gene, Rosa26 locus, FLEx switch, Tamoxifen-inducible Cre-ERT2

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