Yeast populations lose mutational robustness during evolution in one environment but not in another due to the collective effect of a large number of idiosyncratic epistatic interactions.
Hjörleifur Einarsson, Marco Salvatore ... Robin Andersson
A flexible transcription initiation architecture and a uniform regulatory grammar buffer expression variability and the effects of genetic variants on essential genes while a rigid transcription initiation architecture and a diverse regulatory grammar ensure condition-specific responsiveness of other genes.
The theory of Buffered Qualitative Stability uses the importance of biological robustness to explain many features of gene regulatory networks in a wide range of organisms, and has implications for diverse biological phenomena including the ability of bacteria and cancer cells to ‘loosen’ their robustness and hence evade treatment.
Néstor Saiz, Laura Mora-Bitria ... Anna-Katerina Hadjantonakis
A mechanistic basis is provided for the regulative ability of the mammalian embryo offering a long-sought explanation for coordinating cell behaviors at the population level ensuring robustness in developmental outcome.
Joaquín Letelier, Lorena Buono ... Juan R Martínez-Morales
Depletion of vsx genes in zebrafish confirms a conserved role in bipolar cells specification across vertebrates, but do not interfere with the formation of the neural retina domain, which reveal an unexpected robustness of the genetic network sustaining the retina.
Aleksandra Z Płochocka, Miguel Ramirez Moreno ... Lyubov Chumakova
Computational, theoretical, and in vivo studies reveal that in epithelia the self-organization of apical microtubules is robustly determined by cell geometry and minus-end distribution, not organism environment or genetics.
Nuno Calaim, Florian A Dehmelt ... Christian K Machens
Spiking neural networks become robust to various perturbations of their parameters if their voltages are confined to a lower-dimensional subspace, and both dynamics and robustness can be visualised in this voltage subspace.
Multiple enhancers in physical proximity can reinforce shared transcriptional 'hubs' to preserve their transcriptional output, providing a buffer during environmental stresses and genetic perturbations to preserve phenotypic robustness.
Spencer Farrell, Alice E Kane ... Andrew D Rutenberg
Damage and repair for both aging mice and humans declined with age, exhibited very long timescales that varied across health attributes, and were differently affected by interventions.
Theoretical and experimental evidence that Hh signaling dynamics balances robust positioning and sharpness of different target genes in the Drosophila wing disc.