Selection for Function in Early Life: Implications for Early-Onset Pathologies

Area of Science:

• Evolutionary biology
• Pathology
• Aging research

Background:

• Persistent pathological structures are typically considered age-related, emerging after reproductive stages.
• This view is challenged by early-onset pathologies with organized architectures.
• Intra-organismal selection for function, acting on non-reproducing entities, has been proposed to influence aging.

Purpose of the Study:

• To propose that intra-organismal selection for function can operate early in life, before the selection shadow.
• To identify mechanisms promoting early-life action of intra-organismal selection.
• To reframe the understanding of early-onset organized pathologies.

Main Methods:

• Conceptual framework development based on evolutionary and pathological principles.
• Identification of three non-mutually exclusive mechanisms driving early-life selection.
• Analysis of potential environmental influences on tissue-level selection.

Main Results:

• Intra-organismal selection for function can occur before the selection shadow, influencing early-life pathologies.
• Mechanisms include initial local benefits, undetected fitness costs, and environmental changes.
• Early-onset pathologies can be viewed as by-products of eco-evolutionary tissue dynamics.

Conclusions:

• Early-onset organized pathologies are not merely developmental errors but shaped by internal selection forces.
• Understanding these eco-evolutionary dynamics opens new therapeutic avenues.
• Future strategies may target the functional architecture of pathological tissues, not just cells.