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Constitutive expression of CXCL14 in healthy human and murine epithelial tissues

Meuter, Simone and Moser, Bernhard ORCID: 2008. Constitutive expression of CXCL14 in healthy human and murine epithelial tissues. Cytokine 44 (2) , pp. 248-255. 10.1016/j.cyto.2008.08.009

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CXCL14 (BRAK) is an ill-described chemokine with unknown receptor selectivity. The human chemokine is constitutively expressed in epithelial tissues and is selective for dendritic cell precursors, indicating a possible function in the maintenance of epithelial DCs. Several studies have addressed the question of human CXCL14 expression in cancerous tissues; however, distribution in healthy tissues and, in particular, the cellular origin of this chemokine has not been thoroughly investigated. The expression pattern of murine CXCL14 is largely unknown. In agreement with the human chemokine, we demonstrated ubiquitous and constitutive expression of murine CXCL14 in various tissues, foremost in those of epithelial origin such as the skin and the gastrointestinal tract. In addition, we did not find any CXCL14 in lymphoid tissues. Interestingly and in contrast to humans, murine CXCL14 was strongly expressed in the lung. In the skin, CXCL14 was produced by keratinocytes and dermal macrophages in both mice and humans, whereas CXCL14-expressing mast cells could only be found in the human dermis. Therefore, despite the remarkable structural homology and the broad similarity in the tissue distribution of human and murine CXCL14, distinct differences point to diverse, species-specific needs for CXCL14 in epithelial immunity.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Systems Immunity Research Institute (SIURI)
Subjects: R Medicine > R Medicine (General)
Uncontrolled Keywords: chemokine, CXCL14, skin, epithelia
Publisher: Elsevier
ISSN: 1043-4666
Last Modified: 19 Oct 2022 10:29

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