chlamydia infections/tyrosine

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Infection with Chlamydia trachomatis alters the tyrosine phosphorylation and/or localization of several host cell proteins including cortactin.

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Infection of epithelial cells by two biovars of Chlamydia trachomatis results in the tyrosine phosphorylation of several host proteins. The most prominent change in host protein tyrosine phosphorylation involves a complex of proteins with molecular masses of 75 to 85 kDa (pp75/85) and 100 kDa

Chlamydia trachomatis species-specific induction of ezrin tyrosine phosphorylation functions in pathogen entry.

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Chlamydia trachomatis is an obligate intracellular pathogen of humans that exhibits species-specific biological characteristics in its early interactions with host cells that are likely important to pathogenesis. One such characteristic is the tyrosine phosphorylation (Tyr-P) of an approximately

Characterization of Chlamydia trachomatis l2-induced tyrosine-phosphorylated HeLa cell proteins by two-dimensional gel electrophoresis.

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Chlamydia trachomatis is an obligate intracellular bacteria, inducing its own uptake in nonprofessional phagocytes either by phagocytosis or pinocytosis. We have previously shown that C. trachomatis L2 induces tyrosine phosphorylation of eukaryotic proteins upon their entry by phagocytosis. In this

Chlamydia trachomatis serovar L2 induces protein tyrosine phosphorylation during uptake by HeLa cells.

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Chlamydia trachomatis L2 is an obligate intracellular microorganism with a unique biphasic life cycle. The extracellular form, the elementary body (EB), is infectious but metabolically inactive. Attachment of EBs to host cells is medicated by a heparan sulfate-like glycosaminoglycan. Following

Chlamydia trachomatis tarp is phosphorylated by src family tyrosine kinases.

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The translocated actin recruiting phosphoprotein (Tarp) is injected into the cytosol shortly after Chlamydia trachomatis attachment to a target cell and subsequently phosphorylated by an unidentified tyrosine kinase. A role for Tarp phosphorylation in bacterial entry is unknown. In this study,

Chlamydial infection induces pathobiotype-specific protein tyrosine phosphorylation in epithelial cells.

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Members of the genus Chlamydia are strict obligate intracellular pathogens that exhibit marked differences in host range and tissue tropism despite sharing a remarkable level of genomic synteny. These pathobiotype differences among chlamydiae are also mirrored in their early interactions with

Chlamydia pneumoniae infection promotes monocyte transendothelial migration by increasing vascular endothelial cell permeability via the tyrosine phosphorylation of VE-cadherin.

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Migration of monocytes into the subendothelial layer of the intima is one of the critical events in early atherosclerosis. Chlamydia pneumoniae (C. pneumoniae) infection has been shown to promote monocyte transendothelial migration (TEM). However, the exact mechanisms have not yet been fully

The Chlamydia trachomatis type III secretion chaperone Slc1 engages multiple early effectors, including TepP, a tyrosine-phosphorylated protein required for the recruitment of CrkI-II to nascent inclusions and innate immune signaling.

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Chlamydia trachomatis, the causative agent of trachoma and sexually transmitted infections, employs a type III secretion (T3S) system to deliver effector proteins into host epithelial cells to establish a replicative vacuole. Aside from the phosphoprotein TARP, a Chlamydia effector that promotes

Coincubation of human spermatozoa with Chlamydia trachomatis in vitro causes increased tyrosine phosphorylation of sperm proteins.

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Elementary bodies (EBs) of the obligate intracellular bacterium Chlamydia trachomatis are responsible for the first step of attachment to host cells. We have studied the effects of EBs on human sperm protein tyrosine phosphorylation, which is important to sperm function. Indirect immunofluorescence

Species-specific interactions of Src family tyrosine kinases regulate Chlamydia intracellular growth and trafficking.

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Src family kinases (SFKs) regulate key cellular processes and are emerging as important targets for intracellular pathogens. In this commentary, we briefly review the role of SFKs in bacterial pathogenesis and highlight new work on the role of SFKs during the intracellular cycle of Chlamydia

Comparative evaluation of the protective efficacy of two formulations of a recombinant Chlamydia abortus subunit candidate vaccine in a mouse model.

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Chlamydia abortus (C. abortus) is the causative agent of ovine enzootic abortion (OEA) and poses a zoonotic risk to pregnant women. Current live attenuated 1B vaccines are efficacious but cause disease in vaccinated animals and inactivated vaccines are only marginally protective. We tested the

Nitropropenyl benzodioxole, an anti-infective agent with action as a protein tyrosine phosphatase inhibitor.

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We report on the activities of a broad spectrum antimicrobial compound,nitropropenyl benzodioxole (NPBD) which are of relevance to its potential as an anti-infective drug. These investigations support the proposal that a major mechanism of NPBD is action as a tyrosine mimetic, competitively

Chlamydial infection of monocytes stimulates IL-1beta secretion through activation of the NLRP3 inflammasome.

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Chlamydia trachomatis infections represent the leading cause of bacterial sexually-transmitted disease in the United States and can cause serious tissue damage leading to infertility and ectopic pregnancies in women. Inflammation and hence the innate immune response to chlamydial infection

Chlamydia trachomatis inhibits inducible NO synthase in human mesenchymal stem cells by stimulating polyamine synthesis.

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Chlamydia trachomatis is considered the most common agent of sexually transmitted disease worldwide. As an obligate intracellular bacterium, it relies on the host for survival. Production of NO is an effective antimicrobial defense mechanism of the innate immune system. However, whether NO is able

An Unusual Route for p-Aminobenzoate Biosynthesis in Chlamydia trachomatis Involves a Probable Self-Sacrificing Diiron Oxygenase

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Chlamydia trachomatis lacks the canonical genes required for the biosynthesis of p-aminobenzoate (pABA), a component of essential folate cofactors. Previous studies revealed a single gene from C. trachomatis, the CT610 gene, that rescues Escherichia coli ΔpabA,

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