2014 December | Jay D. Humphrey, Eric R. Dufresne, and Martin A. Schwartz
The article discusses the role of mechanotransduction and extracellular matrix (ECM) homeostasis in maintaining the structural and functional integrity of soft connective tissues. It highlights the importance of cells sensing and regulating the mechanical properties of the ECM through integrins and the actomyosin cytoskeleton. The ECM, composed of elastic fibers, fibrillar collagens, and glycosaminoglycans, provides mechanical support and resilience to tissues. Cells, particularly fibroblasts, are responsible for building, maintaining, and remodeling the ECM. The mechanical properties of the ECM are regulated by the balance between matrix deposition, rearrangement, and removal, ensuring tissue homeostasis.
Mechanical homeostasis involves the sensing of matrix mechanics by cells, which then regulate the ECM to maintain desired properties. This process is influenced by factors such as matrix stiffness, which affects cell behavior, including spreading, adhesion, and migration. The ECM also provides biochemical and biomechanical cues that guide cell function and differentiation. The article emphasizes the importance of negative feedback mechanisms in maintaining ECM homeostasis, as the loss of these mechanisms can lead to fibrosis, mechanical failure, or other pathologies.
The study of ECM homeostasis has revealed the complex interplay between mechanical forces and cellular responses. Integrins, which connect the ECM to the cytoskeleton, play a crucial role in mechanosensing and mechanoregulation. The actin cytoskeleton, along with myosin and associated proteins, transmits mechanical signals within the cell. The article also discusses the molecular mechanisms underlying mechanotransduction, including the role of protein domains, integrin-ligand bonds, and signaling pathways that mediate cellular responses to mechanical stimuli.
The study of ECM homeostasis has important implications for understanding and treating diseases such as fibrosis, cancer, and cardiovascular disorders. The article highlights the need for further research into the molecular and cellular mechanisms that govern ECM homeostasis, as well as the development of therapeutic strategies to restore mechanical balance in diseased tissues.The article discusses the role of mechanotransduction and extracellular matrix (ECM) homeostasis in maintaining the structural and functional integrity of soft connective tissues. It highlights the importance of cells sensing and regulating the mechanical properties of the ECM through integrins and the actomyosin cytoskeleton. The ECM, composed of elastic fibers, fibrillar collagens, and glycosaminoglycans, provides mechanical support and resilience to tissues. Cells, particularly fibroblasts, are responsible for building, maintaining, and remodeling the ECM. The mechanical properties of the ECM are regulated by the balance between matrix deposition, rearrangement, and removal, ensuring tissue homeostasis.
Mechanical homeostasis involves the sensing of matrix mechanics by cells, which then regulate the ECM to maintain desired properties. This process is influenced by factors such as matrix stiffness, which affects cell behavior, including spreading, adhesion, and migration. The ECM also provides biochemical and biomechanical cues that guide cell function and differentiation. The article emphasizes the importance of negative feedback mechanisms in maintaining ECM homeostasis, as the loss of these mechanisms can lead to fibrosis, mechanical failure, or other pathologies.
The study of ECM homeostasis has revealed the complex interplay between mechanical forces and cellular responses. Integrins, which connect the ECM to the cytoskeleton, play a crucial role in mechanosensing and mechanoregulation. The actin cytoskeleton, along with myosin and associated proteins, transmits mechanical signals within the cell. The article also discusses the molecular mechanisms underlying mechanotransduction, including the role of protein domains, integrin-ligand bonds, and signaling pathways that mediate cellular responses to mechanical stimuli.
The study of ECM homeostasis has important implications for understanding and treating diseases such as fibrosis, cancer, and cardiovascular disorders. The article highlights the need for further research into the molecular and cellular mechanisms that govern ECM homeostasis, as well as the development of therapeutic strategies to restore mechanical balance in diseased tissues.