Staphylococcal Superantigens Spark Host-Mediated Danger Signals
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چکیده
منابع مشابه
Staphylococcal Superantigens Spark Host-Mediated Danger Signals
Staphylococcal enterotoxin B (SEB) of Staphylococcus aureus, and related superantigenic toxins produced by myriad microbes, are potent stimulators of the immune system causing a variety of human diseases from transient food poisoning to lethal toxic shock. These protein toxins bind directly to specific Vβ regions of T-cell receptors (TCR) and major histocompatibility complex (MHC) class II on a...
متن کاملStaphylococcal enterotoxin microbial superantigens.
Staphylococcal enterotoxins are a family of structurally related proteins that are produced by Staphylococcus aureus. In addition to their role in the pathogenicity of food poisoning, these microbial superantigens have profound effects on the immune system, which makes them useful tools for understanding its mechanism of action. These molecules (24-30 kDa) are highly hydrophilic and exhibit low...
متن کاملStaphylococcal superantigens in colonization and disease
Superantigens (SAgs) are a family of potent immunostimulatory exotoxins known to be produced by only a few bacterial pathogens, including Staphylococcus aureus. More than 20 distinct SAgs have been characterized from different S. aureus strains and at least 80% of clinical strains harbor at least one SAg gene, although most strains encode many. SAgs have been classically associated with food po...
متن کاملStaphylococcal superantigens cause lethal pulmonary disease in rabbits.
BACKGROUND The Centers for Disease Control and Prevention (CDC) and others reported that methicillin-resistant S. aureus (MRSA) are significant causes of serious human infections, including pulmonary illnesses. We investigated the role played by superantigens in lung-associated lethal illness in rabbits. METHODS A rabbit model was established to investigate the potential role played by supera...
متن کاملStaphylococcal and Streptococcal Superantigens: Basic Biology of Conserved Protein Toxins
Staphylococcus aureus and Streptococcus pyogenes are gram-positive bacteria that possess great pathogenic potential in humans, causing numerous maladies such as arthritis, cutaneous infections, endocarditis, enterocolitis, food poisoning, pharyngitis, pneumonia, rheumatic fever, surgical site infections, and toxic shock. These prevalent pathogens produce various virulence factors that include t...
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ژورنال
عنوان ژورنال: Frontiers in Immunology
سال: 2016
ISSN: 1664-3224
DOI: 10.3389/fimmu.2016.00023