Murine transfer factor. IV. Studies with genetically regulated immune responses

Area of Science:

• Immunology
• Genetics

Background:

• Delayed hypersensitivity is a crucial immune response.
• Genetic factors influence an individual's immune response capabilities.
• Transfer factor is a molecule implicated in immune modulation.

Purpose of the Study:

• To investigate the role of transfer factor in modulating immune responsiveness.
• To determine if transfer factor can transfer a high-responder phenotype to low-responder recipients.
• To explore the genetic regulation and limitations of transfer factor activity.

Main Methods:

• Preparation of transfer factor-containing dialysates from high and low responder mouse strains.
• Assaying dialysates for their ability to transfer delayed hypersensitivity.
• Testing transfer efficacy in both high and low responder murine recipients.
• Analyzing the influence of MHC and Igh loci disparities on transfer.

Main Results:

• Dialysates from high responders successfully transferred delayed hypersensitivity to both high and low responder recipients.
• Transfer factor activity was largely absent in dialysates from low responders.
• Immune transfer was effective irrespective of MHC or Igh locus differences.
• Low responder recipients gained the high responder phenotype after transfer factor administration.

Conclusions:

• Transfer factor administration effectively transfers the high responder phenotype to low responder recipients.
• The production of transfer factor appears to be regulated by Ir genes.
• The immunologic activities mediated by transfer factor are not restricted by MHC or Igh loci.