AI Insight
This theoretical study presents a new framework showing that developmental patterns can scale proportionally with tissue size through the dynamics of gene regulatory networks (GRNs) alone, without requiring morphogen gradients to scale. The researchers demonstrate that memory effects encoded within GRNs enable cells to autonomously achieve size-invariant patterning during growth. This challenges the prevailing view that morphogen scaling is necessary for pattern scaling in developing tissues.
Why it matters
This work provides a fundamental shift in understanding how organisms maintain proper proportions during development, which could inform regenerative medicine and tissue engineering approaches. The cell-autonomous mechanism identified offers a more general explanation for size control in biological systems than morphogen-based models alone.
Understand the Science
⚠️ Preprint – Noch nicht peer-reviewed
Dieser Artikel wurde noch nicht von unabhängigen Experten begutachtet. Die Ergebnisse sind vorläufig und sollten mit Vorsicht interpretiert werden.
Developmental patterns can scale with size during growth, a phenomenon commonly attributed to morphogen scaling. Although patterning is orchestrated by gene regulatory networks (GRNs) activated by morphogens, how GRN dynamics interact with growth is not understood. We present a theoretical framework that integrates morphogen signalling, GRN dynamics, and tissue growth. We show that pattern scaling emerges from the interplay of GRN dynamics and growth, even in the absence of morphogen scaling. This relies on memory effects encoded in the GRNs, providing a cell- autonomous route to global scaling, and offering a general mechanism for size-invariant patterning beyond morphogen-based models.
Source: Gene Regulatory Networks Mediate Pattern Scaling in Growing Tissues