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B cell immune repertoire diversifies in a predictable temporal order in vitro
Journal of Immunology (Baltimore, Md. : 1950)
|August 1, 1985
Summary
This study reveals that B cell diversification in vitro follows a predictable order, suggesting genetic factors largely control the development of antigen-responsive B cells, even without environmental influences.
Area of Science:
- Immunology
- Developmental Biology
- Genetics
Background:
- Understanding B cell development is crucial for immunology.
- Environmental factors like circulation and cell migration typically influence B cell diversification.
- The role of genetic influences in B cell repertoire acquisition requires further elucidation.
Purpose of the Study:
- To investigate B cell diversification in vitro, minimizing environmental influences.
- To analyze the genetic control over B cell repertoire development.
- To determine the temporal order of antigen-responsive B cell appearance.
Main Methods:
- Utilized an in vitro fetal organ culture system.
- Employed the splenic focus assay to measure B cell responsiveness.
- Assessed B cell responses to various hapten probes.
Main Results:
- Functional, antigen-specific B cells emerged in a predictable, temporal sequence.
- B cell diversification occurred in vitro, largely independent of external environmental cues.
- The frequency of developing B cells responsive to haptens was quantifiable.
Conclusions:
- B cell diversification in vitro demonstrates a genetically programmed, temporal progression.
- The acquisition of the expressed B cell repertoire is predominantly governed by genetic factors.
- This study highlights the intrinsic genetic control over B cell development.