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Immunology and embryogenesis: the chromosomal editing hypothesis
Advances in Experimental Medicine and Biology
|January 1, 1984
Summary
The chromosomal editing hypothesis proposes that DNA alterations during development create diverse cell receptors and temporal organization. This model, inspired by the immune system, may explain developmental processes across organ systems.
Area of Science:
- Developmental Biology
- Evolutionary Biology
- Immunology
Background:
- The immune system's development provides a potential model for other organ systems.
- Evolutionary arguments suggest cell receptor systems pre-existed in other tissues.
Purpose of the Study:
- To elaborate the chromosomal editing hypothesis of development.
- To propose somatic-genetic and epigenetic events as drivers of differentiation and temporal organization.
Main Methods:
- Drawing analogies from immune system development.
- Proposing a model for somatic-genetic and epigenetic events in development.
Main Results:
- Somatic-genetic events (DNA cutting/splicing) generate diverse cell receptors.
- Sequential chromosomal editing creates temporal organization in development.
- Epigenetic factors trigger specific differentiative events.
Conclusions:
- The hypothesis reconciles mosaic and regulative development models.
- Insights from immune system development can illuminate genetic and epigenetic factors in other tissues.