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Receptor Tyrosine Kinases

Receptor tyrosine kinases or RTKs are membrane-bound receptors that phosphorylate specific tyrosine on protein substrates. RTKs regulate cellular growth, differentiation, survival, and migration. They contain an extracellular ligand binding domain, a transmembrane domain, and a cytosolic tail with intrinsic kinase activity. Several extracellular signaling molecules activate RTKs in one or more ways and relay the signal downstream. Ligands such as platelet-derived growth factor (PDGF) or...
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Ras and Rho are small monomeric GTPases that act downstream of receptor tyrosine kinase (RTK) and regulate various cellular processes. These GTPases switch between active and inactive states by binding to guanine nucleotides.
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Protein Kinases and Phosphatases02:54

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Protein kinases
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Characterize Disease-related Mutants of RAF Family Kinases by Using a Set of Practical and Feasible Methods
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Published on: July 17, 2019

Rho-kinase: regulation, (dys)function, and inhibition.

Ehsan Amin, Badri Nath Dubey, Si-Cai Zhang

    Biological Chemistry
    |August 17, 2013
    PubMed
    Summary

    This review explores the role of Rho-ROCK signaling in regulating cell structure and function. Rho-ROCK enzymes influence cytoskeletal organization, cell adhesion, and gene expression. The authors summarize current findings on how Rho-ROCK activity contributes to health and disease. They highlight the connection between Rho-ROCK dysregulation and conditions like cancer and cardiovascular disease. The review discusses various modes of Rho-ROCK regulation and potential therapeutic strategies. The authors suggest that Rho-ROCK inhibition could be a promising treatment approach. The findings emphasize the importance of understanding Rho-ROCK signaling in cellular processes.

    Keywords:
    Rho-ROCK signalingcytoskeletal regulationRho-kinase inhibitioncellular function

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    Development and Application of Rapamycin-regulated Tyrosine Phosphatases

    Published on: September 6, 2024

    Area of Science:

    • Molecular signaling pathways in cell biology
    • Pharmacological modulation of kinase activity
    • Regulation of cytoskeletal dynamics in physiology

    Background:

    ROCKI and ROCKII are enzymes that influence cytoskeletal organization and cellular behavior. These enzymes are involved in regulating cell contraction and adhesion. Prior research has shown that Rho-kinases are essential for maintaining cellular structure and function. However, the precise mechanisms by which they operate remain unclear. No prior work had resolved how Rho-ROCK signaling affects disease progression. This gap motivated the need for a comprehensive review of current findings. Understanding Rho-ROCK pathways could provide insights into disease mechanisms. This paper aims to clarify the role of Rho-ROCK in health and disease.

    Purpose Of The Study:

    The purpose of this review is to summarize current knowledge about Rho-ROCK signaling. The authors aim to highlight how Rho-ROCK regulates cytoskeletal dynamics and transcription. They seek to identify how dysregulation of Rho-ROCK contributes to disease. The study also aims to explore various modes of Rho-ROCK regulation. This work addresses the lack of a unified framework for Rho-ROCK function. The authors want to clarify the pathways involved in Rho-ROCK activity. This review is intended to guide future research directions in this field. The goal is to provide a synthesis of current findings for researchers.

    Main Methods:

    This review synthesizes findings from multiple studies on Rho-ROCK signaling. The authors analyzed published literature on Rho-ROCK functions and regulation. They examined how Rho-ROCK influences cytoskeletal organization and adhesion. The review includes data from studies on cardiovascular and neurodegenerative diseases. The authors evaluated the role of Rho-ROCK in cell division and gene expression. They considered evidence from both in vitro and in vivo models. The review also discusses various inhibitors of Rho-ROCK activity. The authors structured the findings thematically to highlight key patterns.

    Main Results:

    Rho-ROCK signaling regulates cytoskeletal organization and cell adhesion. The enzymes influence cellular contraction, motility, and morphology. Rho-ROCK activity is linked to gene expression and transcriptional regulation. Dysregulation of Rho-ROCK is associated with cardiovascular and metabolic diseases. The pathways are also implicated in neurodegenerative and cancerous conditions. The review highlights multiple modes of Rho-ROCK regulation. ROCKI and ROCKII have distinct but overlapping functions. The findings suggest that Rho-ROCK inhibition could be a therapeutic strategy.

    Conclusions:

    The authors propose that Rho-ROCK signaling is central to cellular function and disease. They suggest that Rho-ROCK activity is tightly regulated by multiple mechanisms. The review highlights the need for further research into Rho-ROCK inhibition. The authors conclude that Rho-ROCK dysregulation contributes to various pathologies. They propose that Rho-ROCK inhibitors may offer therapeutic benefits. The findings suggest that Rho-ROCK functions are context-dependent. The review supports the idea that Rho-ROCK is a key regulatory node. The authors emphasize the importance of understanding Rho-ROCK signaling in health and disease.

    Rho-ROCK signaling regulates cytoskeletal organization, cell adhesion, and transcription. It influences cell contraction, motility, and gene expression.

    Dysregulation of Rho-ROCK is linked to cardiovascular, metabolic, and neurodegenerative diseases. It may also play a role in cancer progression.

    Rho-ROCK activity is regulated through multiple pathways, including phosphorylation and interaction with other signaling molecules.

    ROCKI and ROCKII influence cytoskeletal dynamics, cell division, and gene expression. They have distinct but overlapping functions.

    The review suggests that Rho-ROCK inhibition may offer therapeutic benefits in diseases like cancer and cardiovascular disorders.

    The authors propose that Rho-ROCK signaling is a key regulatory node in cellular function and disease progression.