ArticleStem cell research & therapy2026
Enhanced proliferation tracer reveals Dorsal-Ventral asymmetry in tracheal epithelial Renewal.
Article in Stem cell research & therapy, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Abstract
To elucidate spatiotemporal dynamics of tissue renewal, we developed evProTracer, an enhanced dual-recombinase lineage tracing system for cumulative in vivo labeling of proliferating cells. Robust longitudinal tracing using evProTracer in murine tracheal epithelium revealed near-complete homeostatic turnover (91.6 ± 1.29% epithelial replacement over 25 weeks), while basal cell-specific Trp63-evProTracer uncovered a dorsally biased proliferation pattern, contributing 33.88 ± 1.44% of total epithelial renewal over 6 months, with early differentiation bias toward club cells. These data demonstrate that ventral epithelial renewal is primarily mediated by non-basal facultative progenitors, revealing their constitutive activation during homeostasis. This study uncovers spatially stratified renewal hierarchies: dorsal basal stem cell reservoirs versus ventral facultative non-basal progenitors. evProTracer provides a versatile platform for investigating tissue plasticity hierarchies in regenerative organs.
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