Abstract: The invention relates to a chemosynthetic cyclo-hepta modified peptide capable of inhibiting toxins of Staphylococcus aureus and a use thereof. The chemosynthetic peptide can specifically inhibit production of the toxins of Staphylococcus aureus by means of the binding of the RNAIII activator protein by a Staphylococcus aureus autocrine. The invention also relates to the use of the chemosynthetic peptide in the pharmaceutical field. The sequence general formula of the chemosynthetic cyclo-hepta modified peptide is CH3—(CH2)m-X-G-(CQHWWHWYC)—(R)n-Y. The results show that the modified peptide can be dissolved well in water and has good activity against the toxins of Staphylococcus aureus.

Abstract: The invention relates to a chemosynthetic cyclo-hepta modified peptide capable of inhibiting toxins of Staphylococcus aureus and a use thereof. The chemosynthetic peptide can specifically inhibit production of the toxins of Staphylococcus aureus by means of the binding of the RNAIII activator protein by a Staphylococcus aureus autocrine. The invention also relates to the use of the chemosynthetic peptide in the pharmaceutical field. The sequence general formula of the chemosynthetic cyclo-hepta modified peptide is CH3—(CH2)m-X-G-(C-Q-H—W—W—H—W—Y—C)—(R)n-Y. The results show that the modified peptide can be dissolved well in water and has good activity against the toxins of Staphylococcus aureus.

Abstract: Disclosed herein is the use of TRAP per se as an active ingredient for the manufacture of a medicament for the treatment of Staphylococcus aureus infection. An exogenous TRAP (native TRAP or recombinant TRAP) per se can effectively inhibit the production of Staphylococcus aureus exotoxins, thereby reducing the pathogenicity of Staphylococcus aureus. In addition, a medicament including TRAP also stimulates the production of corresponding antibodies in human body at the time when it is used to treat Staphylococcus aureus infections, and these antibodies can further inhibit the production of Staphylococcus aureus exotoxins. Such double actions increase the effects of medicament and provide a novel medicament action mode. Moreover, since TRAP functions merely to the toxicity of bacteria but does not affect the growth of bacteria, it cannot make bacteria readily develop drug resistance, and also effective to drug resistant Staphylococcus aureus.