Bacillus anthracis edema toxin inhibits Staphylococcus aureus enterotoxin B effects in vitro: a potential protein therapeutic?

نویسندگان

  • Teresa Krakauer
  • Stephen F Little
  • Bradley G Stiles
چکیده

Various in vitro effects of staphylococcal enterotoxin B (SEB) on human peripheral blood mononuclear cells were mitigated by Bacillus anthracis edema toxin. In particular, levels of some SEB-induced cytokines (tumor necrosis factor alpha, gamma interferon) and chemokines (monocyte chemoattractant protein 1, macrophage inflammatory protein 1 alpha [MIP-1alpha], MIP-1beta) were significantly diminished or even nonexistent, depending upon the timing of edema toxin administration. Overall, these results suggest a novel use of B. anthracis edema toxin against a bacterial superantigen.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Glycerol monolaurate inhibits virulence factor production in Bacillus anthracis.

Anthrax, caused by Bacillus anthracis, has been brought to the public's attention because of the 2001 bioterrorism attacks. However, anthrax is a disease that poses agricultural threats in the United States as well as human populations in Europe, China, Africa, and Australia. Glycerol monolaurate (GML) is a compound that has been shown to inhibit exotoxin production by Staphylococcus aureus and...

متن کامل

Therapeutic Effects and in Vitro Activity of an Extract from Lawsonia inermis

An extract of henna (Lawsonia inermia) was found to be active in vitroagainst gram (+) and gram (-) bacteria including Bacillus anthracis, B.cereus, B. subtilis, Enterobacter aerugenes,Escherichia coli 0128-B7, E.coli 055-B5, E. coliO127-B8, Proteus mirabilis, P. vulgaris, Pseudomonas aeruginosa Salmonella typhosa, S.paratyphi, Sarcina sp. Shigella dysenteriae type 1, S. dysenteriae type 7,...

متن کامل

Two Proteins from Snake Venom have Potent Antibacterial Effects against Bacillus anthracis and Streptococcus pneumoniae

Background: Antibacterial proteins are widely expressed in snake venoms. Previously, we have isolated two immunodominant proteins with molecular weights of 14 and 65kD from the snake venom of Naja naja oxiana (N. oxiana). It was demonstrated that they had potent inhibitory effects against gram-positive bacteria, S. aureus and B. subtilis but were less effective against gram-negative bacteria, s...

متن کامل

Western blot analysis of the exotoxin components from Bacillus anthracis separated by isoelectric focusing gel electrophoresis.

The components of the Bacillus anthracis exotoxins, protective antigen (PA), lethal factor (LF), and edema factor (EF), from 24 isolates were separated by isoelectric focusing gel electrophoresis and detected by Western blot with monoclonal antibodies. Only two isoforms each were observed for PA and EF. Four isoforms were identified for LF. The biological activities of both lethal toxin and ede...

متن کامل

Identification and Validation of a Linear Protective Neutralizing Epitope in the β-Pore Domain of Alpha Toxin

The plethora of virulence factors associated with Staphylococcus aureus make this bacterium an attractive candidate for a molecularly-designed epitope-focused vaccine. This approach, which necessitates the identification of neutralizing epitopes for incorporation into a vaccine construct, is being evaluated for pathogens where conventional approaches have failed to elicit protective humoral res...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Infection and immunity

دوره 73 10  شماره 

صفحات  -

تاریخ انتشار 2005