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Mech Dev. 2000 Nov;98(1-2):105-9.

Differential spatial distribution and temporal regulation of tissue inhibitor of metalloproteinase mRNA expression during rat central nervous system development.

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Department of Anatomy and Neurobiology, University of Vermont College of Medicine, Given C454, Burlington, VT 05405, USA.


The elucidation of the cellular and molecular mechanisms governing the maturation of the central nervous system (CNS) is rapidly emerging. Cell-cell and cell-matrix interactions play critical roles in all phases of developmental tissue remodeling. Throughout development, an intricate balance between extracellular matrix synthesis and degradation is preserved by the opposing actions of matrix metalloproteinases (MMPs) and their specific inhibitors, the tissue inhibitors of metalloproteinases (TIMPs). Although recent evidence suggests that TIMPs exert diverse cell biological functions distinct from their MMP-inhibitory activities, few studies have investigated MMP or TIMP expression during CNS development. The present report analyzes the mRNA expression of the four known TIMPs throughout the course of embryonic and postnatal rat CNS development. The results clearly demonstrate the unique spatial distribution and temporal regulation of TIMP expression and suggest a distinct role for each TIMP during CNS development.

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