Migrasome formation is initiated preferentially in tubular junctions by membrane tension.

Migrasomes, the vesicle-like membrane micro-structures, arise on the retraction fibers (RFs), the branched nano-tubules pulled out of cell plasma membranes during cell migration and shaped by membrane tension. Migrasomes form in two steps: a local RF bulging is followed by a protein-dependent stabilization of the emerging spherical bulge. Here we addressed theoretically and experimentally the previously unexplored mechanism of bulging of membrane tubular systems.

Intracellular pressure controls the propagation of tension in crumpled cell membranes.

Propagation of membrane tension mediates mechanical signal transduction along surfaces of live cells and sets the time scale of mechanical equilibration of cell membranes. Recent studies in several cell types and under different conditions revealed a strikingly wide variation range of the tension propagation speeds including extremely low ones. The latter suggests a possibility of long-living inhomogeneities of membrane tension crucially affecting mechano-sensitive membrane processes.

Description of six new species forming the sumbana species group of the genus Nemophora Hoffmannsegg (Lepidoptera, Adelidae) from the Lesser Sunda Islands in Indonesia.

In this study six new species of the genus Nemophora Hoffmannsegg, 1798, are described from the Lesser Sunda Islands (Bali, Sumbawa, Sumba, and Timor) in Indonesia. These species (N. sumbana Kozlov, sp.