Ilmuwan temukan angin internal dalam sel yang terkait dengan penyebaran kanker

Rabu, 01 April 2026

Dilaporkan oleh AI

Para peneliti di Oregon Health & Science University telah mengidentifikasi aliran cairan tersembunyi di dalam sel yang dengan cepat mengangkut protein ke tepi depan, menantang pandangan tradisional tentang pergerakan seluler. Penemuan yang dilakukan selama eksperimen di kelas ini dapat menjelaskan mengapa beberapa sel kanker menyebar secara agresif. Temuan ini diterbitkan dalam Nature Communications.

Catherine Galbraith dan James Galbraith, peneliti di Oregon Health & Science University, mengungkap mekanisme seluler tersebut saat memimpin kursus neurobiologi di Marine Biological Laboratory di Massachusetts. Dengan menggunakan laser untuk melacak pergerakan protein, mereka mengamati pita gelap aktin terlarut yang tak terduga yang meluncur ke tepi depan sel. 'Kami melakukannya untuk bersenang-senang dan kemudian menyadari bahwa ini memberi kami cara untuk mengukur sesuatu yang sebelumnya tidak dapat diukur,' kata Cathy Galbraith. Hal ini mengungkapkan aliran cairan terarah, yang diibaratkan seperti angin pasat, yang mendorong protein lebih cepat daripada yang dimungkinkan oleh difusi acak saja. James Galbraith menambahkan, 'Sel benar-benar mengikuti arus.'

Cells can sense 10 times farther than expected, a finding that may shed light on cancer spread

Senin, 16 Maret 2026 Dilaporkan oleh AI Gambar dihasilkan oleh AI Fakta terverifikasi

Engineers at Washington University in St. Louis report that while single abnormal cells can mechanically probe roughly 10 microns beyond what they directly touch, groups of epithelial cells can combine forces through collagen to sense features more than 100 microns away—an effect the researchers say could help explain how cancer cells navigate tissue.

Researchers uncover new bacterial movement mechanisms without flagella

Scientists at Arizona State University have identified two unexpected ways bacteria can spread without their usual flagella structures. In one study, E. coli and salmonella use sugar fermentation to create fluid currents for surface migration, dubbed 'swashing.' A separate study reveals a molecular 'gearbox' in flavobacteria that controls directional movement.

Study links fundamental constants to life through liquid flow

Jumat, 08 Mei 2026 Dilaporkan oleh AI

A new analysis from Queen Mary University of London proposes that the universe's physical constants occupy a narrow range allowing liquids to flow properly inside living cells.

Kesehatan

Canadian researchers uncover brain cells fueling glioblastoma growth

Teknologi

Tiny metajets could steer light sails for interstellar travel

Lingkungan

Researchers create light-guided evolution for dynamic proteins

Physicists solve plasma asymmetry mystery in tokamaks

Researchers at the Princeton Plasma Physics Laboratory have identified plasma rotation as the key factor explaining why particles in fusion tokamaks strike one side of the exhaust system more than the other. Their simulations, which matched real experiments, combined rotation with sideways drifts. The discovery could improve designs for future fusion reactors.

Scientists begin unlocking nanoscale immune system secrets

Kamis, 30 April 2026 Dilaporkan oleh AI

New technologies are allowing researchers to peer into the nanoscale workings of the human immune system. Immunologist Daniel Davis highlighted these advances at WIRED Health. The insights could transform approaches to diseases like cancer.

Scientists identify a rocket-fuel-like reaction that propels spinning iron crystals inside malaria parasites

University of Utah researchers report that iron-rich hemozoin crystals inside the malaria parasite Plasmodium falciparum move through the parasite’s digestive compartment because reactions involving hydrogen peroxide at the crystal surface generate chemical propulsion. The work, published in Proceedings of the National Academy of Sciences, links a long-observed phenomenon to peroxide chemistry and could point to new antimalarial drug strategies and ideas for engineered micro- and nanoscale devices.

16 Mei 2026 13.01