ArticleThe EMBO journal2026
CaMKII nucleates an osmotic protein supercomplex to induce cellular bleb expansion.
Article in The EMBO journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Bleb expansion requires transient membrane invaginations that sequester curvature-preferring proteins.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
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Authors and funding
4 authors.
Funding
Abstract
Blebs are membrane protrusions formed when localized regions of the plasma membrane detach from the actin cortex, enabling outward expansion driven by intracellular pressure. These structures play critical roles in cell migration and proliferation. While cortical actin contraction has been proposed as the primary driver of cytoplasmic fluid influx during bleb expansion, our prior observations revealed compartmentalization of Ca²⁺ ions and specific proteins (e.g., Mena) within expanding blebs. The functional significance of these components remained unresolved. In this study, we demonstrate that elevated Ca²⁺ levels during bleb expansion induce the assembly of a protein superstructure built around the CaMKII holoenzyme, incorporating Mena and other regulatory proteins. This complex exhibits intrinsic osmotic activity, facilitating water influx and directly contributing to bleb expansion. These findings elucidate a novel mechanism underlying bleb expansion and provide new insights into the dynamic regulation of physicochemical properties of the cytoplasm.
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