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Multiprotein signaling complexes and regulation of cardiac phenotype
Thomas M Vondriska1, Peipei Ping
1Department of Physiology, Division of Cardiology, Cardiovascular Research Laboratory, David Geffen School of Medicine at University of California, Suite 1609 MRL Building, Los Angeles, 675 C.E. Young Drive, Los Angeles, CA 90095-1760, USA.
Abstract:
There is increasing evidence across disciplines for multiprotein complexes as a mechanism for signal transduction in various cell types. These multiprotein complexes appear to be altered as a direct mechanism to confer signaling responses and to alter phenotype. Although classical experimental techniques are effective to delineate the signaling role of one or a few molecules, they are limited in their ability to thoroughly characterize multiprotein complexes. In this review, the contribution of functional proteomics to a protein complex-based portrait of cardiac cell signaling will be examined along with a discussion and brief evaluation of the state-of-the-art proteomic approaches for multiprotein complex analysis.
Insights
Multiprotein complexes are key to cell signaling and phenotype changes. Functional proteomics offers advanced methods to analyze these complexes in cardiac cells, overcoming limitations of classical techniques.
Area of Science:
- Biochemistry and Molecular Biology
- Cellular Signaling
- Proteomics
Background:
- Multiprotein complexes are increasingly recognized as critical mediators of signal transduction across diverse cell types.
- Alterations in these complexes directly influence cellular signaling pathways and cellular phenotype.
- Classical experimental methods struggle to comprehensively characterize complex multiprotein interactions.
Purpose of the Study:
- To examine the role of functional proteomics in elucidating protein complex-based signaling in cardiac cells.
- To review and evaluate state-of-the-art proteomic techniques for analyzing multiprotein complexes.
- To provide a protein complex-centric view of cardiac cell signaling.
Main Methods:
- Review of current literature on functional proteomics and multiprotein complex analysis.
- Discussion of advanced proteomic approaches, including mass spectrometry-based techniques.
- Evaluation of the strengths and limitations of various proteomic methodologies for complex analysis.
Main Results:
- Functional proteomics provides powerful tools to map multiprotein complexes involved in cardiac signaling.
- Specific proteomic techniques offer enhanced capabilities for characterizing complex stoichiometry and dynamics.
- The review highlights the potential of proteomics to reveal novel signaling mechanisms in cardiac cells.
Conclusions:
- Proteomics is essential for a comprehensive understanding of cardiac cell signaling through multiprotein complexes.
- Advanced proteomic strategies are crucial for overcoming the limitations of traditional methods.
- This approach facilitates a deeper insight into how protein complexes regulate cardiac function and phenotype.