Chitinases and chitinase-like proteins (CLPs) belong to the glycoside hydrolase family 18 of proteins. Chitinases are expressed in mammals and lower organisms, facilitate chitin degradation, and hence act as host-defence enzymes. Gene duplication and loss-of-function mutations of enzymatically active chitinases have resulted in the expression of a diverse range of CLPs across different species. CLPs are genes that are increasingly associated with inflammation and tissue remodelling not only in mammals but also across distant species. While the focus has remained on understanding the functions and expression patterns of CLPs during disease in humans, studies in mouse and lower organisms have revealed important and overlapping roles of the CLP family during physiology, host defence and pathology. This review will summarise recent insights into the regulatory functions of CLPs on innate immune pathways and discuss how these effects are not only important for host defence and tissue injury/repair after pathogen invasion, but also how they have extensive implications for pathological processes involved in diseases such as asthma.
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Review Article| January 19 2018
Chitinase-like proteins as regulators of innate immunity and tissue repair: helpful lessons for asthma?
Tara E. Sutherland
1Faculty of Biology, Medicine and Health, Manchester Collaborative Centre for Inflammation Research, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9NT, U.K.
Correspondence: Tara E. Sutherland (firstname.lastname@example.org)
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Tara E. Sutherland; Chitinase-like proteins as regulators of innate immunity and tissue repair: helpful lessons for asthma?. Biochem Soc Trans 19 February 2018; 46 (1): 141–151. doi: https://doi.org/10.1042/BST20170108
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