WHAT ROLES FOR TRACK-STRUCTURE AND MICRODOSIMETRY IN THE ERA OF -omics AND SYSTEMS BIOLOGY?

Area of Science:

• Radiation Biology
• Biophysics
• Systems Biology

Background:

• Ionizing radiation causes biological damage through discrete energy depositions at critical subcellular scales.
• Track structure and microdosimetry successfully explain radiation damage at the cellular level.
• Current reductionist models struggle to explain supracellular and long-term biological responses to radiation.

Purpose of the Study:

• To explore the role of track structure and microdosimetry in bridging the gap between reductionist and holistic approaches in radiation biology.
• To investigate how these physical concepts can be better utilized to interpret radiobiological data.
• To inform the development of systemic approaches in radiation biology.

Main Methods:

• Review and theoretical considerations on the application of track structure and microdosimetry.
• Analysis of the limitations of reductionist models in systems radiation biology.
• Discussion on integrating physical interaction data into holistic biological models.

Main Results:

• Track structure and microdosimetry provide fundamental physical data crucial for understanding radiation interactions.
• These approaches offer a potential framework for linking subcellular damage to system-level responses.
• Further exploitation can enhance the interpretation of complex radiobiological outcomes.

Conclusions:

• Track structure and microdosimetry are essential for interpreting radiobiological data and can inform systemic approaches.
• Integrating these physical concepts is vital for advancing systems radiation biology.
• A unified approach combining physical interactions with biological network analysis is needed.