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Varicella-zoster virus (VZV) is the causative agent of both chickenpox (varicella) and shingles (zoster). VZV survives host defenses, even with an intact immune system, and disseminates in the host before causing disease. To date, several diverse immunomodulatory strategies used by VZV to undermine host immunity have been identified; however, few studies have addressed the complement evasion strategies used by this virus. Here, we show that expression of CD59, which is a key member of host regulators of complement activation (RCA), is significantly upregulated in response to VZV infection in human T cells and dorsal root ganglia (DRG) but not in human skin xenografts in SCID-hu mice in vivo. This is the first report demonstrating that VZV infection upregulates host CD59 expression in a tissue-specific manner in vivo, which may aid VZV in complement evasion and pathogenesis.
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http://dx.doi.org/10.1016/j.virol.2016.01.019 | DOI Listing |
Front Cell Infect Microbiol
July 2025
Department of Biology, Missouri State University, Springfield, MO, United States.
Respiratory syncytial virus (RSV) is a leading cause of lower respiratory tract infections in young children and elderly, worldwide and poses significant risks to immunocompromised individuals. To elucidate host-virus interactions at the transcriptional level, we analyzed differential gene expression in HEp-2 cells infected with RSV using cDNA microarray analysis complemented by quantitative PCR (qPCR). HEp-2 cells were infected with RSV at a multiplicity of infection of 1, and total RNA was isolated 24 hours post-infection for gene expression profiling.
View Article and Find Full Text PDFJ Inflamm Res
May 2025
Fuwai Yunnan Hospital, Chinese Academy Medical Sciences, Kunming, 650000, People's Republic of China.
Sepsis, a lethal organ dysfunction syndrome driven by aberrant host responses to infection, intertwines excessive inflammatory responses and dysregulated coagulation processes in its pathophysiology. Emerging research reveals the complement terminal membrane attack complex C5b-9 orchestrates ultralarge von Willebrand factor (ULVWF) release from vascular endothelial cells (ECs) through multifaceted mechanisms: C5b-9 compromises EC membrane integrity, activates calcium influx cascades, and provokes NLRP3 inflammasome signaling, triggering massive exocytosis of ULVWF stored within Weibel-Palade bodies (WPBs). When ADAMTS13 activity falters, undegraded ULVWF complexes with platelets to spawn microthrombi, precipitating microvascular occlusion and multiorgan collapse.
View Article and Find Full Text PDFJ Chromatogr A
August 2025
College of Chemistry, Jilin University, Changchun, 130012, PR China. Electronic address:
The detection of CD59 is of great clinical importance since it is an important glycoprotein that can serve as a biomarker related to kinds of cancers. In this work, we prepared host-guest interaction based oriented epitope molecularly imprinted polymer (hg-EMIP) for the immobilization of CD59 N-terminal epitopes. Cucurbit[7]uril (CB[7]) and l-phenylalanine (L-phe) were employed as the host and guest; and tannic acid (TA) with abundant hydroxyl groups and diethylenetriamine (DETA) were chosen as the functional monomer and crosslinking agent, respectively.
View Article and Find Full Text PDFJ Membr Biol
August 2025
Monash Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Melbourne, VIC, Australia.
The complement pathway is one of the most ancient elements of the host's innate response and includes a set of protein effectors that rapidly react against pathogens. The late stages of the complement reaction are broadly categorised into two major outcomes. Firstly, C5a receptors, expressed on membranes of host cells, are activated by C5a to generate pro-inflammatory responses.
View Article and Find Full Text PDFJ Virol Methods
April 2025
Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, Ontario, Canada; Department of Cell and Systems Biology, University of Toronto, 25 Harbord St, Toronto, Ontario, Canada; Department of Immunology, University of Toronto,  1 King's College Circle,Â
The surface of HIV-1 is embedded with numerous host-derived proteins. Characterizing these proteins can enhance knowledge of virus biology and potentially identify novel therapeutic targets. As many of these proteins are present in low abundance on virion surfaces, their identification can be hindered by inherent variables in the methods employed to detect them, including their varying assay sensitivities, sample processing, quantitative capacity, and experimental reproducibility.
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