• Vaccine Name: S. pyogenes Sib35 Protein Vaccine
• Target Pathogen: Streptococcus pyogenes
• Target Disease: Group A streptococcal infections, Strep throat, Scarlet fever
• Vaccine Ontology ID: VO_0004057
• Type: Subunit vaccine
• Status: Research
• Antigen: Recombinant Sib35 protein
• sib35 gene engineering:
  • Type: Recombinant protein preparation
  • Description:
  • Detailed Gene Information: Click Here.
• Adjuvant:
  • Adjuvant name:
  • VO adjuvant ID: VO_0000139
• Immunization Route: subcutaneous injection

Mouse Response

• Host Strain: BALB/c, C3H/HeN, C57/BL6 and CD1
• Vaccination Protocol: Six-week-old female mice were separated into two groups, which were either subcutaneously immunized with rSib35 (50 μg) in Freund's complete adjuvant or injected with PBS in FCA on day 0, and given booster injections with rSib35 and Freund's incomplete adjuvant on days 14, 28, and 42 (Okamoto et al., 2005).
• Challenge Protocol: Actively immunized mice were intraperitoneally challenged with an appropriate number of CFUs of strain SSI-1 on day 56 following primary immunization (Okamoto et al., 2005).
• Efficacy: The survival rates of all four-mouse strains were significantly increased by Sib35 vaccination. 100% of the Sib35-immunized C3H/HeN mice survived the potentially lethal GAS challenge, whereas all non-vaccinated C3H/HeN mice died after the challenge (Okamoto et al., 2005).
• Host IgG response
  • Description: Immunization of mice with Sib 35 induced significantly higher antigen-specific IgG antibodies in their sera beginning 28 days after immunization as compared to non immunized control mice (Okamoto et al., 2005).
  • Detailed Gene Information: Click Here.