During embryonic development, cells with biochemically distinct ends – called polarised cells – organise into distinct patterns based on their orientation. Using theoretical physics approaches and quantitative experiments, scientists have shown how the shape of tissue boundaries determines these patterns. They found that specific features in these patterns – called topological defects – determine where the proamniotic cavity, an important structure for embryonic development, forms. This research identifies fundamental principles that govern how order and functional structures emerge inside complex biological systems.

Cricket mothers transmit environmental information that determines embryonic developmental timing. Researchers have demonstrated that entry into developmental arrest is controlled by an integrated program of transcriptional, epigenetic, and metabolic reprogramming. Their study uncovers a system-level mechanism linking environmental cues to embryonic fate.

A formal model recently published in the open-access Agricultural and Environmental Modelling journal describes the development of APODEMUS, which aims to improve risk assessments of pesticides for the wood mouse (Apodemus sylvaticus) in European agricultural landscapes. This computer simulation provides a foundational blueprint and a tool aimed at helping regulators accurately test the environmental safety of agricultural pesticides by simulating how they affect wild animal populations.

Actinobacteria TFDB is an integrated database for Actinobacteria transcription factors (TFs). The platform provides a one-stop resource for analyzing TF characteristics, target genes, ligands, and posttranslational modifications to advance microbiology and synthetic biology research.

Researchers have developed a programmable genome evolution platform called RAMPAGE that rapidly generates beneficial mutations in the industrial yeast Pichia pastoris. The technology enabled the evolution of strains that tolerate extremely high methanol concentrations, grow at elevated temperatures, and overcome growth defects caused by glycoengineering. The platform could accelerate the development of more robust microbial cell factories for sustainable biomanufacturing.

Periodontal (gum) disease is one of the most prevalent diseases worldwide, caused by the bacterium Porphyromonas gingivalis (P. gingivalis). Published in Communications Biology, a joint study including the Okinawa Institute of Science and Technology (OIST) provides new insights into how this bacterium causes plaque formation. Using cryo-electron (cryo-EM) microscopy, they reveal the 3D structure of Mfa pili, an arm-like filament which enables the bacteria to stick to host tissues and other microbes. 

Atherosclerotic cardiovascular disease (ASCVD) remains a leading cause of death worldwide. Elevated low-density lipoprotein cholesterol (LDL-C) is a major modifiable driver of ASCVD, and PCSK9 has become an important therapeutic target because it regulates hepatic LDL receptor recycling and circulating LDL-C levels. Although PCSK9-targeting monoclonal antibodies and siRNA therapies can substantially lower LDL-C, their cost and need for repeated administration have motivated efforts to develop longer-lasting and more accessible approaches.

How does a stripy tree snail hide from hungry birds? The Hypselostyla camelopardalis from the Philippines and Reinia variegata from Japan have both evolved a form of dynamic camouflage to survive. Their light-colored patterns vanish in the rain and the shell turns dark brown, similar to damp tree bark. Researchers from the University Museum at the University of Tokyo have uncovered the mechanism behind this rare molluscan transformation. The outmost layer of the snails’ shell is porous like a sponge. When water fills the holes, it changes how light bounces off, making a second darker layer of shell beneath more visible. This has potential applications for smart sensors and materials that react to humidity, without the need for external power.