[The greater RTK/RAS/ERK signalling pathway: how genetics has helped piece together a signalling network]

Area of Science:

• Molecular Biology
• Cell Biology
• Genetics

Context:

• Cells utilize intricate protein networks and signaling pathways to respond to environmental cues, developmental signals, and pathogens.
• Dysregulation of these signaling processes is implicated in various diseases, most notably cancer.
• Receptor tyrosine kinase (RTK) signaling was among the first pathways elucidated for transmitting extracellular signals to the nucleus, inducing transcriptional changes.

Purpose:

• To highlight the crucial, yet often overlooked, contributions of multicellular model organisms, specifically Drosophila and nematodes, to understanding cell signaling.
• To provide an overview of the established knowledge and recent discoveries in the regulation of RTK/RAS/ERK signaling pathways.

Summary:

• Cellular responses are mediated by complex protein networks and signaling pathways.
• Receptor tyrosine kinase (RTK) signaling, a prototype for signal transduction, has been significantly illuminated by genetic studies in Drosophila and nematodes.
• These model organisms have been instrumental in deciphering the intricate regulatory networks governing RTK/RAS/ERK signaling.

Impact:

• Advances in understanding RTK/RAS/ERK signaling provide insights into cancer biology and potential therapeutic targets.
• The foundational knowledge gained from model organisms accelerates research in human cell signaling and disease mechanisms.
• This work underscores the importance of comparative genomics and genetics in unraveling fundamental biological processes.