Related Experiment Videos
T cell cytokines and disease prevention
Abstract:
Until recently, work on cytokines has been dominated by the use of murine or human molecules. In the last 5 years we have seen a rapid expansion in the production of bovine, ovine and porcine cytokine reagents. cDNA clones, recombinant proteins and monoclonal antibody probes are not available for a wide variety of cytokines from veterinary species. One of the most interesting recent proposals in immunology has been the division of T helper cells into two classes. Th1 cells have been characterised by the production of gamma-interferon, interleukin (IL)-2, tumour necrosis factor-beta (lymphotoxin-alpha) and the ability to mediate delayed-type hypersensitivity responses, and Th2 cells by their production of IL-4, IL-5, IL-6 and IL-10 and the ability to stimulate production of mast cells, eosinophils and IgE. An important issue for us is to determine whether polarisation of T helper cells to Th1 or Th2 occurs in veterinary species. This paper will attempt to review the status of the Th1 and Th2 debate for sheep, cattle and pigs. It will also discuss the potential for the use of cytokines in modulating the type of immune response following vaccination. By incorporation of particular cytokines into vaccine formulations or the inhibition of production of specific cytokines it may be possible to redirect the nature of the immune response to a particular antigen.
Insights
Recent advances provide reagents for veterinary cytokines, crucial for understanding T helper cell polarization (Th1/Th2) in sheep, cattle, and pigs. This knowledge aids in developing targeted vaccines by modulating immune responses.
Area of Science:
- Immunology
- Veterinary Medicine
- Molecular Biology
Background:
- Cytokine research historically focused on murine and human models.
- Recent expansion in bovine, ovine, and porcine cytokine reagents (cDNA clones, recombinant proteins, monoclonal antibodies).
- Emerging concept of T helper cell polarization into Th1 and Th2 subsets.
Purpose of the Study:
- To review the status of the Th1/Th2 cell polarization debate in veterinary species (sheep, cattle, pigs).
- To explore the potential of using cytokines to modulate immune responses in vaccination strategies.
Main Methods:
- Review of existing literature on veterinary cytokines and T helper cell subsets.
- Analysis of cytokine profiles associated with Th1 (e.g., gamma-interferon, IL-2) and Th2 (e.g., IL-4, IL-5, IL-6, IL-10) responses.
- Discussion of cytokine functions in immune response modulation, particularly in vaccine development.
Main Results:
- Availability of diverse cytokine reagents for veterinary species has increased significantly.
- Evidence suggests Th1/Th2 polarization occurs in sheep, cattle, and pigs, though requires further characterization.
- Cytokines offer potential for directing immune responses towards desired outcomes in vaccination.
Conclusions:
- Understanding Th1/Th2 cell polarization in livestock is critical for advancing veterinary immunology.
- Cytokine-based strategies hold promise for enhancing vaccine efficacy by tailoring immune responses.
- Further research is needed to fully elucidate and utilize cytokine-driven immune modulation in veterinary applications.