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Staphylococcal Superantigens: Pyrogenic Toxins Induce Toxic Shock
Toxins, 2019 Staphylococcal enterotoxin B (SEB) and related superantigenic toxins produced by Staphylococcus aureus are potent activators of the immune system. These protein toxins bind to major histocompatibility complex (MHC) class II molecules and specific Vβ
Teresa Krakauer
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Detection of circulating superantigens in an intensive care unit population [PDF]
International Journal of Infectious Diseases, 2004 Objective: Plasma concentrations of superantigens were measured in an intensive care unit (ICU) population and the relationship of superantigen positive rates with the presence of sepsis was investigated.Methods: Plasma samples were collected at least ...
Kunihiro Mashiko
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Identification of two new core chromosome-encoded superantigens in Streptococcus pyogenes; speQ and speR [PDF]
Journal of Infection, 2019 Superantigens are ubiquitous within the Streptococcus pyogenes genome, which suggests that superantigen-mediated T-cell activation provides a significant selective advantage. S. pyogenes can carry a variable complement of the 11 known superantigens.
Claire Turner +2 more
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The bacterial superantigen and superantigen‐like proteins
Immunological Reviews, 2008Summary: The bacterial superantigens are protein toxins that bind to major histocompatibility complex class II and T‐cell receptor to stimulate large numbers of T cells. The majority are produced by the Gram‐positive organisms Staphylococcus aureus and Streptococcus pyogenes and are the causative agents in toxic shock syndrome, an acute disease caused
John D, Fraser, Thomas, Proft
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Cell Biophysics, 1993
The bacterial superantigen staphylococcal enterotoxin A (SEA) is an extremely potent activator of T lymphocytes when presented on MHC class II antigens. In order to induce T lymphocytes to reject a tumor, we substituted the specificity of SEA for MHC class II molecules with specificity for tumor cells by combining SEA with a MAb recognizing colon ...
T, Kalland +8 more
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The bacterial superantigen staphylococcal enterotoxin A (SEA) is an extremely potent activator of T lymphocytes when presented on MHC class II antigens. In order to induce T lymphocytes to reject a tumor, we substituted the specificity of SEA for MHC class II molecules with specificity for tumor cells by combining SEA with a MAb recognizing colon ...
T, Kalland +8 more
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Journal of the American Academy of Dermatology, 2011
Superantigens (SAgs) are virulent polypeptides that are produced by a variety of infectious organisms. They are capable of causing nonspecific T cell activation by circumventing normal antigen processing in the human host. The genetic makeup of the host plays a role in conferring susceptibility or protection against SAgs.
Edgar S, Macias +3 more
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Superantigens (SAgs) are virulent polypeptides that are produced by a variety of infectious organisms. They are capable of causing nonspecific T cell activation by circumventing normal antigen processing in the human host. The genetic makeup of the host plays a role in conferring susceptibility or protection against SAgs.
Edgar S, Macias +3 more
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2007
Superantigens (SAgs) are the most powerful T cell mitogens ever discovered. They activate the immune system by binding to the major histocompatibility complex (MHC) class II and T cell receptor molecules. One of the major producers of SAgs is Streptococcus pyogenes, or group A streptococcus (GAS).
Thomas, Proft, John D, Fraser
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Superantigens (SAgs) are the most powerful T cell mitogens ever discovered. They activate the immune system by binding to the major histocompatibility complex (MHC) class II and T cell receptor molecules. One of the major producers of SAgs is Streptococcus pyogenes, or group A streptococcus (GAS).
Thomas, Proft, John D, Fraser
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Immunological Investigations, 1997
Superantigens comprise a large group of viral and bacterial proteins that stimulate T lymphocyte proliferation without regard for the antigenic specificity of the T cells but dependent on the composition of the variable part of the beta chain of the T cell receptor.
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Superantigens comprise a large group of viral and bacterial proteins that stimulate T lymphocyte proliferation without regard for the antigenic specificity of the T cells but dependent on the composition of the variable part of the beta chain of the T cell receptor.
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Current Opinion in Structural Biology, 1995
Bacterial superantigens are extremely potent activators of the immune system. Their ability to efficiently cross-link molecules of the major histocompatibility complex class II and T-cell receptors causes the normal antigen specificity of each receptor to be bypassed.
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Bacterial superantigens are extremely potent activators of the immune system. Their ability to efficiently cross-link molecules of the major histocompatibility complex class II and T-cell receptors causes the normal antigen specificity of each receptor to be bypassed.
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Superantigens: Supersignalers?
Science's STKE, 2006Some bacterial and viral proteins are potent activators of the immune response, earning them the title of superantigens (SAgs). Infection with pathogens containing these proteins can produce massive T cell activation and can result in various potentially fatal conditions, such as toxic shock and food poisoning.
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