Germ Granule Remodeling Reveals Germline Age in Caenorhabditis elegans

P granules and Mutator foci in Caenorhabditis elegans germlines remodel with age, and single-nucleus image features enable GG-Clock to predict chronological age accurately.

• Why it matters: Germline aging constrains reproductive lifespan, but quantitative, cellular-resolution measures of germline age in intact tissue have been limited.
• What they did: The study tracks age-linked changes in granule morphology, spatial organization, and mutual associations, then builds GG-Clock from single-nucleus image features to predict chronological age.
• The result: Intermittent fasting shifts GG-Clock predictions toward a younger germline state, and GGProfiler automates segmentation and feature extraction for quantifying condensate remodeling across interventions.

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