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Updated: Jun 29, 2026

Pre-clinical Evaluation of Tyrosine Kinase Inhibitors for Treatment of Acute Leukemia
Published on: September 19, 2013
Know thy Sef: a novel class of feedback antagonists of receptor tyrosine kinase signaling
Dina Ron1, Yaron Fuchs, Dror S Chorev
1Department of Biology, Technion-Israel Institute of Technology, Haifa 32000, Israel. dinar@tx.technion.ac.il
Abstract:
The strength and duration of intracellular signals must be precisely regulated, since inappropriate signaling can cause disease. Negative feedback mechanisms provide an effective means of controlling growth factor-mediated signaling, either by restricting the incoming signal or by inducing counter-regulatory mechanisms affecting signal propagation. Sef proteins represent a new class of feedback antagonists capable of regulating receptor tyrosine kinase signaling. The involvement of Sef in development, as well as in other biological processes, was demonstrated by biochemical and genetic approaches.
Insights
Negative feedback mechanisms precisely control intracellular signals to prevent disease. Sef proteins are identified as a new class of feedback antagonists regulating receptor tyrosine kinase signaling during development and other biological processes.
Area of Science:
- Molecular biology
- Cell signaling
- Developmental biology
Background:
- Intracellular signal regulation is crucial for preventing disease.
- Negative feedback mechanisms control growth factor signaling by restricting input or inducing counter-regulation.
- Receptor tyrosine kinase (RTK) signaling is a key pathway involved in cellular processes.
Purpose of the Study:
- To identify and characterize novel regulators of RTK signaling.
- To investigate the role of Sef proteins as feedback antagonists.
- To explore the involvement of Sef proteins in biological processes.
Main Methods:
- Biochemical approaches were used to study Sef protein function.
- Genetic approaches were employed to assess the in vivo roles of Sef proteins.
- Analysis of RTK signaling pathways was performed.
Main Results:
- Sef proteins were identified as a new class of feedback antagonists.
- Sef proteins were shown to regulate RTK signaling.
- The involvement of Sef in development and other biological processes was demonstrated.
Conclusions:
- Sef proteins play a significant role in regulating intracellular signaling pathways.
- Sef proteins act as feedback antagonists, contributing to precise signal control.
- The findings highlight Sef proteins as important targets for understanding and potentially treating diseases related to aberrant signaling.
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