PMID- 20816235 OWN - NLM STAT- MEDLINE DCOM- 20101214 LR - 20100906 IS - 0091-679X (Print) IS - 0091-679X (Linking) VI - 98 DP - 2010 TI - Mechanical induction of gene expression in connective tissue cells. PG - 178-205 LID - 10.1016/S0091-679X(10)98008-4 [doi] AB - The extracellular matrices of mammals undergo coordinated synthesis and degradation, dynamic remodeling processes that enable tissue adaptations to a broad range of environmental factors, including applied mechanical forces. The soft and mineralized connective tissues of mammals also exhibit a wide repertoire of mechanical properties, which enable their tissue-specific functions and modulate cellular responses to forces. The expression of genes in response to applied forces are important for maintaining the support, attachment, and function of various organs including kidney, heart, liver, lung, joint, and periodontium. Several high-prevalence diseases of extracellular matrices including arthritis, heart failure, and periodontal diseases involve pathological levels of mechanical forces that impact the gene expression repertoires and function of bone, cartilage, and soft connective tissues. Recent work on the application of mechanical forces to cultured connective tissue cells and various in vivo force models have enabled study of the regulatory networks that control mechanically induced gene expression in connective tissue cells. In addition to the influence of mechanical forces on the expression of type 1 collagen, which is the most abundant protein of mammals, new work has shown that the expression of a wide range of matrix, signaling, and cytoskeletal proteins are regulated by exogenous mechanical forces and by the forces generated by cells themselves. In this chapter, we first discuss the fundamental nature of the extracellular matrix in health and the impact of mechanical forces. Next we consider the utilization of several, widely employed model systems for mechanical stimulation of cells. Finally, we consider in detail how application of tensile forces to cultured cardiac fibroblasts can be used for the characterization of the signaling systems by which mechanical forces regulate myofibroblast differentiation that is seen in cardiac pressure overload. CI - Copyright (c) 2010 Elsevier Inc. All rights reserved. FAU - Chan, Matthew W C AU - Chan MW AD - Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Fitzgerald Building, Toronto, ON, Canada M5S 3E2. FAU - Hinz, Boris AU - Hinz B FAU - McCulloch, Christopher A AU - McCulloch CA LA - eng GR - MGP-37783/Canadian Institutes of Health Research/Canada PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review PL - United States TA - Methods Cell Biol JT - Methods in cell biology JID - 0373334 SB - IM MH - Animals MH - Cell Culture Techniques/methods MH - Connective Tissue Cells/*physiology MH - Endomyocardial Fibrosis/genetics/physiopathology MH - Extracellular Matrix/physiology MH - *Gene Expression Regulation/physiology MH - Genetic Techniques MH - Humans MH - Mechanotransduction, Cellular/*genetics/physiology MH - Models, Biological MH - Physical Stimulation MH - *Stress, Mechanical EDAT- 2010/09/08 06:00 MHDA- 2010/12/16 06:00 CRDT- 2010/09/07 06:00 PHST- 2010/09/07 06:00 [entrez] PHST- 2010/09/08 06:00 [pubmed] PHST- 2010/12/16 06:00 [medline] AID - S0091-679X(10)98008-4 [pii] AID - 10.1016/S0091-679X(10)98008-4 [doi] PST - ppublish SO - Methods Cell Biol. 2010;98:178-205. doi: 10.1016/S0091-679X(10)98008-4.