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On the Cover

A cytoskeleton-inspired mechanical network with mechanosensitive proteins and motors performs contrastive learning from environmental cues via strain-rate dependent reactions and active forces, while maintaining learned responses despite continuous molecular turnover.

From the article:

Learning via Mechanosensitivity and Activity in Cytoskeletal Networks
Deb S. Banerjee, Martin J. Falk, Margaret L. Gardel, Aleksandra M. Walczak, Thierry Mora, and Suriyanarayanan Vaikuntanathan
PRX Life 4, 013001 (2026)

HIGHLIGHTED ARTICLES

Thermodynamic Signatures of Sensing and Amplification by Periodically Driven Hair-Cell Bundles

Yanathip Thipmaungprom, Laila Saliekh, Rodrigo Alonso, Édgar Roldán, Florian Berger, and Roman Belousov

PRX Life 4, 013039 (2026) - Published 31 March, 2026

By operating in different thermodynamic modes, hair cell bundles in the inner ear dynamically regulate power exchange with mechanical signals at the smallest biological scales.

TUTORIALS

Hands-On Growth Laws Theory Cookbook

Rossana Droghetti, Mattia Corigliano, Ludovico Calabrese, Philippe Fuchs, Abhishek Vaidyanathan, Johannes Keisers, Gabriele Micali, Marco Cosentino Lagomarsino, and Luca Ciandrini

PRX Life 4, 012001 (2026) - Published 25 March, 2026

This tutorial for coarse-grained cellular growth modeling provides a hands-on, step-by-step guide for constructing and analyzing different aspects of cellular growth and covers essential concepts, recent literature, and key challenges for the field; ready to cook?

ARTICLES

Learning via Mechanosensitivity and Activity in Cytoskeletal Networks

Deb S. Banerjee, Martin J. Falk, Margaret L. Gardel, Aleksandra M. Walczak, Thierry Mora, and Suriyanarayanan Vaikuntanathan

PRX Life 4, 013001 (2026) - Published 5 January, 2026

A cytoskeleton-inspired mechanical network with mechanosensitive proteins and motors performs contrastive learning from environmental cues via strain-rate dependent reactions and active forces, while maintaining learned responses despite continuous molecular turnover.

Bacterial Motility Patterns Vary Smoothly with Spatial Confinement and Disorder

Haibei Zhang, Miles T. Wetherington, Hungtang Ko, Cody E. FitzGerald, Leone V. Luzzatto, István A. Kovács, Edwin M. Munro, and Jasmine A. Nirody

PRX Life 4, 013002 (2026) - Published 6 January, 2026

A study of bacterial movement across a range of both unconfined and highly confined environments establishes a quantitative link between behavioral rules and environmental context and reveals how E. coli can navigate complex habitats.

Weak Transcription Factor Clustering at Binding Sites can Facilitate Information Transfer from Molecular Signals

Tamara Mijatović, Aimée R. Kok, Merlijn Brüggen, Jos W. Zwanikken, and Marianne Bauer

PRX Life 4, 013003 (2026) - Published 8 January, 2026

By analyzing bicoid regulation in the fruit fly embryo, this study shows that weak clustering of transcription factors can enable maximal transfer of information from molecular signals to downstream gene expression, and that timescales are crucial for determining the optimal clustering strength.

Chemotaxis-Driven Instabilities Govern Size, Shape and Migration Efficiency of Multicellular Clusters

Monika Sanoria, Gema Malet-Engra, Giorgio Scita, Nir Gov, and Ajay Gopinathan

PRX Life 4, 013004 (2026) - Published 9 January, 2026

Multicellular clusters remain fluid and move together in low chemoattractant gradients, while above a threshold gradient clusters become unstable due to local, cluster-shape dependent velocity differentials that cause them to eventually break apart.

Cell Rearrangement Progression Along the Apical-Basal Axis is Linked with 3D Epithelial Tissue Structure

Erika M. Kusaka, Sassan Ostvar, Xiaoyun Liu, Xun Wang, Tianyi Liu, and Karen E. Kasza

PRX Life 4, 013005 (2026) - Published 12 January, 2026

By studying three dimensional cell shapes and tissue structure in the developing fruit fly embryo, this study uncovers how epithelial cells exchange neighbors over their full apical-basal span during convergent extension — revealing new insights into the structure & dynamics of remodeling epithelia.

Hierarchical Loop Stabilization in Periodically Driven Elastic Networks

Purba Chatterjee and Eleni Katifori

PRX Life 4, 013006 (2026) - Published 13 January, 2026

Resonant frequencies prioritize multi-looped structures or higher-level loops close to the driving source, while the network is prone to vessel shunting away from resonances — underscoring the importance of short-term pulsatility on long-term structures in adapting, periodically driven elastic flow networks like mammalian vasculature.

How Random Connectivity Shapes the Fluctuating Dynamics of Finite-Size Neural Populations

Nils E. Greven, Jonas Ranft, and Tilo Schwalger

PRX Life 4, 013007 (2026) - Published 14 January, 2026

A mesoscopic model of finite-size networks for Poisson neurons with random connectivity, external noise, and disordered mean inputs accurately describes fluctuations and nonlinearities and outperforms prior models that neglected variance in connectivity.

Manifold Learning for Olfactory Habituation to Strongly Fluctuating Backgrounds

François X. P. Bourassa, Paul François, Gautam Reddy, and Massimo Vergassola

PRX Life 4, 013008 (2026) - Published 16 January, 2026

This study proposes that olfactory systems can adapt to rapidly fluctuating odor backgrounds using a manifold learning mechanism and demonstrates how this mechanism can outperform traditional predictive filtering methods.

Fast Decisions with Biophysically Constrained Gene Promoter Architectures

Tarek Tohme, Massimo Vergassola, Thierry Mora, and Aleksandra M. Walczak

PRX Life 4, 013009 (2026) - Published 21 January, 2026

By analyzing the connection between promoter architecture and the ability to quickly decode transcription factor concentration, this study shows that, in the presence of non-cognate ligands, fast and accurate networks do not need to be optimally selective.

Proliferating Nematic that Collectively Senses an Anisotropic Substrate

Toshi Parmar, Fridtjof Brauns, Yimin Luo, and M. Cristina Marchetti

PRX Life 4, 013010 (2026) - Published 26 January, 2026

By studying elongated cells growing on a nematic elastomer substrate, this study finds that global alignment with the substrate is only achieved above a critical density — suggesting a collective mechanism for sensing substrate anisotropy.

Causal Spike Timing-Dependent Plasticity Prevents Assembly Fusion in Recurrent Networks

Xinruo Yang and Brent Doiron

PRX Life 4, 013011 (2026) - Published 27 January, 2026

In recurrently coupled networks of spiking neuron models, causal spike-timing-dependent plasticity permits assembly learning and allows significant overlap in assembly membership without the risk of post-training fusion and erasure of learned structure.

Renormalized Mechanics and Stochastic Thermodynamics of Growing Vesicles

Jordan L. Shivers, Michael Nguyen, Aaron R. Dinner, Petia M. Vlahovska, and Suriyanarayanan Vaikuntanathan

PRX Life 4, 013012 (2026) - Published 30 January, 2026

By investigating the growth of vesicles driven by an external reservoir, this study finds that active material exchange can drive a dramatic renormalization of a membrane’s effective mechanical properties and impact the trajectory of vesicle growth.

Liquid-Liquid Phase Separation Enables Highly Selective Viral Genome Packaging

Layne B. Frechette and Michael F. Hagan

PRX Life 4, 013013 (2026) - Published 2 February, 2026

The co-localization of viral RNA and capsids within a condensate strongly enhances assembly rates, yields, and selectivity — suggesting that viral condensates provide a mechanism to ensure the robust and selective assembly of virions around viral genomes.

Model for Self-Organized Growth, Branching, and Allometric Scaling of the Planarian Gut

Christian Hanauer, Amrutha Palavalli, Baiqun An, Efe Ilker, Jochen C. Rink, and Frank Jülicher

PRX Life 4, 013014 (2026) - Published 3 February, 2026

Using planarian gut branching as biological inspiration, this study develops a model that integrates tissue interface growth, morphogen dynamics, and organismal growth to explain how branched organ structures form and scale.

Collective is Different: Information Exchange and Speed-Accuracy Trade-Offs in Self-Organized Patterning

Ashutosh Tripathi, Jörn Dunkel, and Dominic J. Skinner

PRX Life 4, 013015 (2026) - Published 4 February, 2026

By examining collective patterning in a tractable model, this study reveals a trade-off between speed and accuracy and identifies counterintuitive properties of collective behavior, for instance optimized strategies do not always maximize information transfer.

Field-Theoretic Approach to Compartmental Neuronal Networks: Impact of Dendritic Calcium Spike-Dependent Bursting

Audrey O'Brien Teasley and Gabriel Koch Ocker

PRX Life 4, 013016 (2026) - Published 5 February, 2026

By studying simple model cortical networks with dendritic calcium spikes, this study shows how dendritic nonlinearities and compartmentalized inputs can interact to shape population activity.

Generalized Lotka-Volterra Model with Sparse Interactions: Non-Gaussian Effects and Topological Multiple-Equilibria Phase

Tommaso Tonolo, Maria Chiara Angelini, Sandro Azaele, Amos Maritan, and Giacomo Gradenigo

PRX Life 4, 013017 (2026) - Published 6 February, 2026

A study of the equilibrium phases of a generalized Lotka-Volterra model characterized by non-Gaussian species abundance distributions demonstrates how sparsity is a key feature for accurately modeling realistic ecological phenomena.

Spatiotemporal Patterns of Active Epigenetic Turnover

Fabrizio Olmeda, Misha Gupta, Onurcan Bektas, and Steffen Rulands

PRX Life 4, 013018 (2026) - Published 9 February, 2026

Chromatin-mediated coupling between cycles of DNA methylation and demethylation can lead to the emergence of phase-locked domains — regions of locally synchronized turnover activity whose coarsening is arrested by genomic heterogeneity.

Inherent Leakage of Hydrophobic Gating in BK Channels

Zhiguang Jia and Jianhan Chen

PRX Life 4, 013019 (2026) - Published 10 February, 2026

Free energy calculations coupled with experimental data show that the intrinsic opening of big potassium channels is likely an inherent property of the vapor barrier generated by hydrophobic dewetting of the inner pore in the deactivated state.

Deciphering Rapid Cell Signaling and Control of Cell Motility by Reverse Opto-Chemical Engineering

H. Hamzeh, A. Gong, M. Balbach, D. Fridman, H. G. Körschen, R. Pascal, F. Lavryk, A. Rennhack, R. Seifert, A. Hernandez-Clavijo, S. Pifferi, V. Dusend, B. K. Fleischmann, P. Sasse, A. Menini, B. M. Friedrich, L. Alvarez, and U. B. Kaupp

PRX Life 4, 013020 (2026) - Published 13 February, 2026

By using temporal light patterns and photo-triggers to create virtual sensory landscapes for cells, the reverse opto-chemical engineering technique can be used to both monitor and remotely control the movement of cells.

Cell-Level Model to Predict the Spatiotemporal Dynamics of Neurodegenerative Disease

Shih-Huan Huang (黃士桓), Matthew W. Cotton, Tuomas P. J. Knowles, David Klenerman, and Georg Meisl

PRX Life 4, 013021 (2026) - Published 17 February, 2026

A cell-level physical model reveals a critical switch fraction where neurodegenerative disease dynamics transition from slow, spontaneous seeding to rapid, runaway propagation.

Uncovering Potential Effects of Spontaneous Waves on Synaptic Development: The Visual System as a Model

Jennifer Crodelle and Wei P. Dai

PRX Life 4, 013022 (2026) - Published 18 February, 2026

Spontaneous retinal waves may be nature’s way to initialize connections — seeding visual circuit structure before experience.

Intrinsic Plasticity Underlies the Malleability of Neural Network Heterogeneity

Daniel Trotter, Taufik Valiante, and Jeremie Lefebvre

PRX Life 4, 013023 (2026) - Published 20 February, 2026

A recurrent neural network model containing neurons with intrinsic plasticity measures how neuronal excitability varies with plasticity under different synaptic inputs — illuminating how these dynamics influence heterogeneity in neural responses.

Landscape of Target State Directed Processes in Living Systems

Nicolas Lenner, Matthias Häring, Stephan Eule, Jörg Großhans, and Fred Wolf

PRX Life 4, 013024 (2026) - Published 24 February, 2026

Reverse-time stochastic dynamics, distinct from the forward-time dynamics widely used in stochastic thermodynamics, is fundamental for understanding the directed, goal-reaching dynamics that are a common feature of many biological processes.

Improved Anisotropic Network Models for Membrane Protein Dynamics and Mechanosensitive Ion Channels

Zhongjie Han, Lei Wang, and Chen Song

PRX Life 4, 013025 (2026) - Published 27 February, 2026

By integrating anisotropic network models that incorporate membrane contact probability with perturbation response scanning, this study simulates conformational changes in mechanosensitive proteins — enabling the examination of various gating mechanisms.

Scaling Relations of Multicomponent Phase Coexistence Boundaries

Daoyuan Qian, Julia Acker, Rob M. Scrutton, Charlotte M. Fischer, Seema Qamar, Tomas Sneideris, Alexander Borodavka, and Tuomas P. J. Knowles

PRX Life 4, 013026 (2026) - Published 2 March, 2026

By analyzing how multicomponent mixtures separate into distinct phases, this framework uncovers two scaling regimes, providing a quantitative way to characterize condensate phase behavior.

How Different are Self and Nonself?

Andreas Tiffeau-Mayer, Jonathan A. Levine, Christopher J. Russo, Quentin Marcou, William Bialek, and Benjamin D. Greenbaum

PRX Life 4, 013027 (2026) - Published 4 March, 2026

This statistical physics framework models peptidomes across species and shows that self and nonself peptides are nearly one and the same, implying that the immune system benefits by targeting antigens close to those represented in the organism’s own proteome.

Machine-Learning-Inferred and Energy-Landscape-Guided Analyses Reveal Kinetic Determinants of CRISPR/Cas9 Gene Editing

Lei Jin, Risi Liyanage, Dongsheng Duan, and Shi-Jie Chen

PRX Life 4, 013028 (2026) - Published 4 March, 2026

By integrating genome editing data with a random forest approach algorithm, scientists uncovered a link between the cleavage efficiency of CRISPR and the R-loop unfolding rate, enhancing the prediction of on- and off-target gene editing efficiencies.

Theory of Rapid Behavioral Inferences Under the Pressure of Time

Ann M. Hermundstad and Wiktor F. Młynarski

PRX Life 4, 013029 (2026) - Published 5 March, 2026

The proposed theory shows how animals could exploit variability in random stimulus sequences to enhance the reliability of inferences underlying survival-critical tasks.

Learning the Shape of Evolutionary Landscapes: Geometric Deep Learning Reveals Hidden Structure in Phenotype-to-Fitness Maps

Manuel Razo-Mejia, Madhav Mani, and Dmitri A. Petrov

PRX Life 4, 013030 (2026) - Published 6 March, 2026

This study details a data-driven implementation of Fisher’s geometric model — providing an empirically grounded approach for understanding evolutionary dynamics using deep learning methods.

Nonequilibrium Bending Fluctuations Reveal the Mechanics of Microtubules and Mitochondria in Living Cells

Kengo Nishi, Sufi Raja, An Pham, Ronit Freeman, Antonina Roll-Mecak, Fred C. MacKintosh, and Christoph F. Schmidt

PRX Life 4, 013031 (2026) - Published 9 March, 2026

Using a new method to characterize the mechanical properties and driving forces of microtubules in living cells, this study finds that polyglutamylation increases microtubule stiffness, while tube-like mitochondria have a much lower bending stiffness.

Hydrodynamic Stability and Pattern Formation in Hexatic Epithelial Layers

Josep-Maria Armengol-Collado, Leonardo Puggioni, Livio N. Carenza, and Luca Giomi

PRX Life 4, 013032 (2026) - Published 10 March, 2026

This study analyzes the interplay between mechanical activity, lateral adhesion, and hexatic order by developing a continuum model of epithelial layers — providing insights on the general principles governing pattern formation and stability.

Coarsening Model of Chromosomal Crossover Placement

Marcel Ernst, Riccardo Rossetto, and David Zwicker

PRX Life 4, 013033 (2026) - Published 11 March, 2026

This work introduces an extended coarsening model of chromosomal crossover placement, which provides a coherent explanation of experimental data across mutants by incorporating material exchanges between droplets, the synaptonemal complex, and the nucleoplasm.

Soil Texture Regulates Bacterial Motility and Chemotactic Recruitment to Plant Roots

Ahmed Al Harraq, Gayoung Choi, Sujit S. Datta, and Joshua W. Shaevitz

PRX Life 4, 013034 (2026) - Published 19 March, 2026

Using a transparent soil mimic and the model bacterium E. coli, this study characterized how soil texture affects bacterial motility across pore scales, finding bacteria shift from run-and-tumble behavior in large pores to frequent trapping in small ones.

Characterizing Trajectories of Innate Immune Cells in Larval Zebrafish

Piyush Amitabh and Raghuveer Parthasarathy

PRX Life 4, 013035 (2026) - Published 20 March, 2026

This quantitative framework can image and track neutrophil and macrophage dynamics in larval zebrafish, enabling a method to assess the motility, behavior, and migration patterns of distinct cell populations, especially in the vicinity of the gut.

Nonequilibrium Protein Complexes as Molecular Automata

Jan Kocka, Kabir Husain, and Jaime Agudo-Canalejo

PRX Life 4, 013036 (2026) - Published 27 March, 2026

Inspired by Crick’s molecular memory proposal, this study analyzes a nonequilibrium protein model and identifies molecular automata that can be exploited for computation, including in molecular stopwatches and error-tolerant memory.

Control of Lumen Morphology by Lateral and Basal Cell Surfaces

Chandraniva Guha Ray, Markus Mukenhirn, Alf Honigmann, and Pierre A. Haas

PRX Life 4, 013037 (2026) - Published 30 March, 2026

All cell surfaces work together mechanically to control the morphology of fluid-filled lumina enclosed by epithelia during tissue development.

Keratin Cortex Stabilizes Cells and Cell-Cell Contacts at High Strains

Ruth Meyer, Ulla Unkelbach, Parul Jain, Ulrike Rölleke, Nicole Schwarz, Amaury Perez-Tirado, Anna V. Schepers, Claudia Geisler, Andreas Janshoff, and Sarah Köster

PRX Life 4, 013038 (2026) - Published 31 March, 2026

Experiments that examine cytoskeletal mechanics in keratin-deficient cells demonstrate that an intricate relationship between actin and keratin cortices in wild-type cells provides stability under high strain.

Thermodynamic Signatures of Sensing and Amplification by Periodically Driven Hair-Cell Bundles

Yanathip Thipmaungprom, Laila Saliekh, Rodrigo Alonso, Édgar Roldán, Florian Berger, and Roman Belousov

PRX Life 4, 013039 (2026) - Published 31 March, 2026

By operating in different thermodynamic modes, hair cell bundles in the inner ear dynamically regulate power exchange with mechanical signals at the smallest biological scales.

REVIEW ARTICLES

Marr's Three Levels for Embryonic Development: Information, Dynamical Systems, Gene Networks

David B. Brückner and Gašper Tkačik

PRX Life 4, 017001 (2026) - Published 23 January, 2026

This review article proposes that Marr’s three levels of analysis — the computational problem, the algorithms used, and their molecular implementation — can be a useful framework for studying developmental processes.

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