bioRxivJClub
Hierarchical organization in sparse gene regulatory networks shapes structural coherence and emergent regulatory coordination
bioRxiv · · Preprint · Open access
Harlapur, Jagadeesan + 3 more
Abstract ↗AI summary
The abstract is read at the publisher; the summary is JClub's.
The coherence matrix shows that sparse, signed, directed gene regulatory networks maintain directional regulatory coordination, and hierarchical “compact core” architectures avoid density-driven scaling penalties.
- Why it matters: Unsigned network metrics cannot capture whether regulatory changes are directionally consistent, leaving a gap in explaining how coordination persists in extremely sparse GRNs.
- What they did: The authors compute the coherence matrix on synthetic signed, directed GRN ensembles, then apply it to six whole-organism GRNs and validate predictions using transcriptomic co-regulation directionality.
- The result: Whole-organism GRNs show lower overall coherence and more fragmented structures than expected, and hierarchical networks restrict dense regulatory crosstalk to an intermediate core, enabling scaling under extreme sparsity.
The findingWhy it mattersWhat they didThe result
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