期刊
BIOCHEMICAL SOCIETY TRANSACTIONS
卷 39, 期 -, 页码 1051-1055出版社
PORTLAND PRESS LTD
DOI: 10.1042/BST0391051
关键词
antimicrobial peptide; bacterium; lipopolysaccharide (LPS); mucous cell; serous cell; short palate; lung and nasal epithelium clone 1 (SPLUNC1)
资金
- Public Health Service, National Institutes of Health [ES011033, HL091938]
- American Heart Association-Pennsylvania Delaware Affiliate [0365327U]
PLUNC (palate, lung and nasal epithelium clone)-associated gene originally referred to one gene, but now has been extended to represent a gene family that consists of a number of genes with peptide sequence homologies and predicted structural similarities. PLUNC-like proteins display sequence homology with BPI (bactericidal/permeability-increasing protein), a 456-residue cationic protein produced by precursors of polymorphonuclear leucocytes that have been shown to possess both bactericidal and LPS (lipopolysaccharide)-binding activities. The human PLUNC is also known as LUNX (lung-specific X protein), NASG (nasopharyngeal carcinoma-related protein) and SPURT (secretory protein in upper respiratory tract). The gene originally named PLUNC is now recognized as SPLUNC1. Its gene product SPLUNC1 is a secretory protein that is abundantly expressed in cells of the surface epithelium in the upper respiratory tracts and secretory glands in lung, and in the head and the neck region. The functional role of SPLUNC1 in innate immunity has been suggested but not clearly defined. The present review describes recent findings that support antimicrobial and anti-inflammatory functions of SPLUNC1 in Gram-negative bacteria-induced respiratory infection.
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