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Updated: Jun 19, 2026
Bioluminescent Bacterial Imaging In Vivo
Published on: November 4, 2012
Correlation between bioluminescence and bacterial burden in passively protected mice challenged with a recombinant
Meru Sheel1, Manisha Pandey, Michael F Good
1Queensland Institute of Medical Research, PO Royal Brisbane Hospital, Brisbane, QLD 4029, Australia.
Abstract:
Streptococcus pyogenes, also known as group A streptococcus (GAS), is a human pathogen which infects people of all age groups. Previous work has reported that conformationally constrained chimeric peptide J8 protects against GAS challenge. In the current study, we demonstrate the utility of bioluminescent imaging as a rapid technique for monitoring bacterial dissemination following the passive transfer of rabbit anti-J8 antibodies to naïve mice and subsequent challenge with recombinant GAS strain M49, an emm type shown to be associated with poststreptococcal glomerular nephritis.
Insights
Rabbit anti-J8 antibodies protect against Streptococcus pyogenes (GAS) infection. Bioluminescent imaging rapidly monitors bacterial spread in mice after antibody transfer and GAS challenge.
Area of Science:
- Microbiology
- Immunology
- Infectious Diseases
Background:
- Streptococcus pyogenes (GAS) is a significant human pathogen affecting all age groups.
- Previous research indicates that the chimeric peptide J8 offers protection against GAS infections.
- Certain GAS strains, like M49, are linked to post-streptococcal glomerulonephritis.
Purpose of the Study:
- To evaluate the protective efficacy of passive immunization with rabbit anti-J8 antibodies against GAS challenge.
- To demonstrate the application of bioluminescent imaging for monitoring bacterial dissemination in a mouse model.
Main Methods:
- Passive transfer of rabbit anti-J8 antibodies to naïve mice.
- Challenge of mice with a recombinant bioluminescent GAS strain (M49).
- Utilization of bioluminescent imaging to track bacterial dissemination in vivo.
Main Results:
- Passive transfer of anti-J8 antibodies conferred protection against GAS challenge.
- Bioluminescent imaging provided a rapid and effective method for visualizing and quantifying bacterial spread.
- The study successfully monitored bacterial dissemination following antibody administration and subsequent GAS infection.
Conclusions:
- Rabbit anti-J8 antibodies are effective in protecting against Streptococcus pyogenes infection.
- Bioluminescent imaging is a valuable tool for real-time monitoring of bacterial dissemination in infection models.
- This approach aids in the rapid assessment of potential therapeutics against GAS.
