Systems-level reconstruction of kinase phosphosignaling networks regulating endothelial barrier integrity using...

Area of Science:

• Cellular biology
• Biochemistry
• Computational biology

Background:

• Phosphosignaling networks are crucial for regulating cellular functions.
• Understanding kinase-mediated regulatory networks is essential for deciphering cellular processes.

Purpose of the Study:

• To construct kinase-mediated regulatory networks in brain endothelial cells stimulated by thrombin.
• To compare two distinct computational strategies for network construction.

Main Methods:

• Temporal Pathway Synthesizer (TPS) utilized phosphoproteomics data.
• Temporally REsolved KInase Network Generation (TREKING) employed kinase inhibitor screens.
• Both methods were used to analyze thrombin-stimulated brain endothelial cells.

Main Results:

• TPS and TREKING predicted overlapping kinases involved in regulating cell barriers.
• Each strategy revealed unique network topologies for the identified kinases.
• The computational approaches demonstrated effectiveness in describing regulatory signaling.

Conclusions:

• Two distinct computational strategies, TPS and TREKING, can effectively map kinase-mediated regulatory networks.
• These networks are critical for understanding cellular processes, such as barrier regulation.
• The developed methods are broadly applicable across various biological systems for signaling network analysis.