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The secreted Helicobacter cysteine-rich protein A causes adherence of human monocytes and differentiation into a macrophage-like phenotype


Dumrese, C; Slomianka, L; Ziegler, U; Choi, S S; Kalia, A; Fulurija, A; Lu, W; Berg, D E; Benghezal, M; Marshall, B; Mittl, P R E (2009). The secreted Helicobacter cysteine-rich protein A causes adherence of human monocytes and differentiation into a macrophage-like phenotype. FEBS Letters, 583(10):1637-1643.

Abstract

Helicobacter pylori genomes typically contain 8 or 9 genes that code for secreted and highly disulfide-bridged proteins designated Helicobacter cysteine-rich proteins (Hcp). Here we show that HcpA (hp0211) but not HcpC (hp1098) triggers the differentiation of human myeloid Thp1 monocytes into macrophages. Small amounts of HcpA cause the transition of round-shaped monocytes into cells with star-like morphologies, adherence to the culture dish surface, phagocytosis of opsonized fluorescent microspheres, and expression of the surface marker protein CD11b, all of which are indicative of a macrophage-like phenotype. We conclude that HcpA acts as a bacterial immune modulator similar to a eukaryotic cytokine.

Abstract

Helicobacter pylori genomes typically contain 8 or 9 genes that code for secreted and highly disulfide-bridged proteins designated Helicobacter cysteine-rich proteins (Hcp). Here we show that HcpA (hp0211) but not HcpC (hp1098) triggers the differentiation of human myeloid Thp1 monocytes into macrophages. Small amounts of HcpA cause the transition of round-shaped monocytes into cells with star-like morphologies, adherence to the culture dish surface, phagocytosis of opsonized fluorescent microspheres, and expression of the surface marker protein CD11b, all of which are indicative of a macrophage-like phenotype. We conclude that HcpA acts as a bacterial immune modulator similar to a eukaryotic cytokine.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Anatomy
04 Faculty of Medicine > Department of Biochemistry
07 Faculty of Science > Department of Biochemistry
Dewey Decimal Classification:570 Life sciences; biology
610 Medicine & health
Language:English
Date:24 April 2009
Deposited On:29 Jul 2009 09:04
Last Modified:06 Dec 2017 20:13
Publisher:Elsevier
ISSN:0014-5793
Free access at:PubMed ID. An embargo period may apply.
Publisher DOI:https://doi.org/10.1016/j.febslet.2009.04.027
PubMed ID:19393649

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