Intron Retention Controls Localization of lncRNAs PURPL and MALAT1 to Promote Cell Proliferation and Migration

This study reveals that the splicing activator U2AF2 promotes intron retention in lncRNAs PURPL and MALAT1, a mechanism essential for their nuclear localization and the subsequent regulation of cell proliferation and migration.

Grammatikakis, I., Norkaew, C., Song, Y. J., Behera, A. K., Pehrsson, E. C., Hartford, C. C. R., Kordale, S., Prasanth, R., Zhao, Y., Shrethsa, B., Li, X. L., Kumar, R., Singh, R., Brownmiller, T., We (…)2026-03-20📄 cell biology

SCALE: Scalable Conditional Atlas-Level Endpoint transport for virtual cell perturbation prediction

The paper introduces SCALE, a scalable foundation model for virtual cell perturbation prediction that integrates a high-throughput BioNeMo framework, a stable conditional transport architecture with LLaMA-based encoding, and biologically faithful evaluation metrics to overcome existing bottlenecks in efficiency, stability, and biological fidelity.

Chen, S., Yu, L., Jin, K., Zhang, S., Wu, H., Xu, S., Qian, Q., Chen, Q., Bai, L., Sun, S., Gao, Z.2026-03-20📄 cell biology

Selective activation of IRE-1 safeguards restoration of translation and organismal rejuvenation from adult reproductive diapause

This study reveals that in *C. elegans*, selective activation of the IRE-1/XBP-1 branch of the unfolded protein response, while suppressing the PEK-1 branch, coordinates enhanced protein folding with restored translation machinery to drive rapid organismal rejuvenation from adult reproductive diapause upon refeeding.

Fan, Q., Guo, A., Wang, S., Yang, W., Yan, Y.-H., Dong, M.-Q.2026-03-20📄 cell biology

Non-translated mRNA levels determine P-body properties

This study demonstrates that the abundance of non-translated mRNA dictates the assembly pathway and biophysical properties of cytoplasmic processing bodies (P-bodies), where strong translation attenuation leads to the formation of few, bright, and fluid P-bodies that recruit decay factors en bloc, while weaker attenuation results in numerous, dim, and viscous P-bodies with sequential protein recruitment.

Mookherjee, D., Rommel, M., Weidner, F., Siketanc, M., Hondele, M., Spang, A.2026-03-20📄 cell biology

Human iPSC Models of Ganglioside Deficiency Reveal a Sialylated Lipid Requirement for Plasma-Membrane Organization and Neuronal Activity

Using human iPSC-derived cortical neurons, this study reveals that while both ST3GAL5 and B4GALNT1 deficiencies eliminate major gangliosides, only ST3GAL5 loss triggers a fatal reprogramming of the lipid repertoire that depletes plasma membrane proteins and abolishes neuronal activity, whereas B4GALNT1 deficiency is compensated by precursor sialylated lipids that preserve membrane organization and electrical function.

Barrow, H. G., Han, Z. Z., Nicholson, A. S., Strasser, S., Nash, D. A., Suberu, J. O., Antrobus, R., te Vruchte, D., Priestman, D. A., Graham, S. C., Platt, F. M., Deane, J. E.2026-03-20📄 cell biology

A live-cell autophagy reporter reveals reversible vacuolation in naked mole-rat skin fibroblasts under lysosomal stress

This study establishes a live-cell autophagy reporter in naked mole-rat skin fibroblasts to reveal that, unlike conventional models, these cells exhibit a distinct steady-state autophagy-lysosome organization and undergo a unique, reversible vacuolation response to lysosomal stress without acute cytotoxicity.

Tong, F., Hoare, M. P., Grundy, L. J., Gallo, F., Müller, K., Smith, E. S. J., Kumita, J. R.2026-03-20📄 cell biology

Loss of Sun2 ablates nuclear mechanosensing-driven extracellular matrix production and mitigates lung fibrosis

This study demonstrates that the inner nuclear membrane protein Sun2 acts as a critical mechanosensing node required for stiffness-dependent extracellular matrix production and lung fibrosis, suggesting that targeting Sun2-containing LINC complexes could mitigate fibrotic disease.

Carley, E., Sandria, S., Peng, X. Y., Davidson, K., Nassereddine, A., Ryu, C., Rivera, R., McGovern, J., Ghincea, A., Lusk, C. P., Herzog, E. L., Horsley, V., King, M. C.2026-03-20📄 cell biology