TIMP1
Lua error in Module:Infobox_gene at line 33: attempt to index field 'wikibase' (a nil value). TIMP metallopeptidase inhibitor 1, also known as TIMP1, a tissue inhibitor of metalloproteinases, is a glycoprotein that is expressed from the several tissues of organisms.
This protein is a member of the TIMP family. The glycoprotein is a natural inhibitor of the matrix metalloproteinases (MMPs), a group of peptidases involved in degradation of the extracellular matrix. In addition to its inhibitory role against most of the known MMPs, the encoded protein is able to promote cell proliferation in a wide range of cell types, and may also have an anti-apoptotic function.
Contents
Other names
- Erythroid potentiating activity (EPA)
- Human collagenase inhibitor (HCI)
Regulation of TIMP expression
Transcription of this gene is highly inducible in response to many cytokines and hormones. In addition, the expression from some but not all inactive X chromosomes suggests that this gene inactivation is polymorphic in human females. This gene is located within intron 6 of the synapsin I gene and is transcribed in the opposite direction.[1]
In adrenocortical cells the trophic hormone ACTH induces expression of TIMP-1 and the increase in TIMP expression is also associated with decreased collagenase activity.[2]
Increased expression of TIMP1 has been found to be associated with worse prognosis of various tumors, such as laryngeal carcinoma [3] or melanoma.[4]
See also
References
Further reading
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External links
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