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Understanding Signal Transduction Networks in Mammalian Cells: Dynamics and Physiological Impact

The NGF signaling pathway is just one aspect of a complex signal transduction network in mammalian cells. This network integrates signals from growth factors, anti-growth factors, and more, resulting in alterations in gene expression, cell proliferation, or apoptosis. To fully grasp the signal processing within such intricate networks, we must consider whether wiring diagrams can adequately reflect the physiological behaviors of cells in vitro and in vivo. This exploration of signal processing complexity is essential for advancing our understanding of cellular dynamics.

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Understanding Signal Transduction Networks in Mammalian Cells: Dynamics and Physiological Impact

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    1. Network Dynamics and Cell Physiology John J. Tyson Department of Biological Sciences & Virginia Bioinformatics Institute

    2. The NGF signaling pathway of the previous slide is only one of many components of a signal transduction network in mammalian cells, which integrates and processes information from growth factors, anti-growth factors, death factors, cell-cell and cell-matrix adhesions, etc., resulting in changes in gene expression, cell proliferation or cell cycle arrest, or cell death (apoptosis). How are we to understand the signal processing carried out by a network of this complexity? Is the wiring diagram sufficient to account for the physiological attributes of mammalian cells in vitro or in vivo? If not, what is missing? From Hanahan & Weinberg (2000) Cell 100:57-70.The NGF signaling pathway of the previous slide is only one of many components of a signal transduction network in mammalian cells, which integrates and processes information from growth factors, anti-growth factors, death factors, cell-cell and cell-matrix adhesions, etc., resulting in changes in gene expression, cell proliferation or cell cycle arrest, or cell death (apoptosis). How are we to understand the signal processing carried out by a network of this complexity? Is the wiring diagram sufficient to account for the physiological attributes of mammalian cells in vitro or in vivo? If not, what is missing? From Hanahan & Weinberg (2000) Cell 100:57-70.

    12. Dynamical Perspective on Molecular Cell Biology Vector Field, Steady State, Bifurcation

    25. Review

    26. The Cell Cycle of Fission Yeast

    38. S phase and M phase start at the same timeS phase and M phase start at the same time

    43. The Cell Cycle of Budding Yeast

    52. The Dynamical Perspective

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