A new study shows that researcher independence is not a simple PhD milestone but rather an ongoing, uneven process. Using a “river of experience” method with six researchers, it reveals independence as a lifelong journey shaped by personal agency, relationships and structural conditions, highlighting the need for more sustained and contextualized approaches to researcher development.

Cytochrome P450 enzymes are promising biocatalysts for greener chemical manufacturing, but many remain difficult to study because their activity relies on unidentified partner proteins. Now, researchers from Japan have engineered the P450 enzyme CYP107J1 from Bacillus subtilis into a new hydrogen peroxide-driven form that no longer requires these partners. The modified enzyme exhibited 28-fold higher catalytic activity than its natural counterpart and efficiently produced indigo dye, demonstrating a promising strategy towards sustainable oxidation chemistry.

A miniaturized, biomimetic model of the human intestine successfully reproduced long-term enterovirus A71 (EV-A71) infection, report researchers from Science Tokyo. Using this innovative platform, they shed light on how this virus grows in the intestine without triggering a strong immune response. Their findings could help develop effective treatments for EV-A71 infectious diseases.

Researchers at The University of Osaka used a focused laser beam to make in vitro models of cytoskeletal networks that exhibit dynamic cell-like motions. This technique provides spatiotemporal control of the network structure, unlike conventional methods based on self-organization and photochemical reactions. The models could be used to determine the structure–motion relationship of cytoskeletal networks, which has applications for understanding cell division, migration, and adhesion and the creation of protein-based robots and synthetic cells.

Researchers at Tohoku University used state-of-the-art semiconductor fabrication technologies to demonstrate how we could be ready for large-scale spintronic p-computers.

Researchers from The University of Osaka found that nanomicelle-mediated delivery of five mRNAs involved in angiogenesis, heart cell contraction, immune and hematopoietic stem cell recruitment, and immune response suppression promoted cardiac repair and increased overall survival in a mouse model of myocardial infarction–induced heart failure. These findings suggest that a multifactorial treatment approach effectively addresses the complex nature of heart failure and could aid new treatments in regenerative medicine for cardiovascular disease.

The National Institute for Materials Science (NIMS) discovered a thermal response phenomenon in which Ba₄Ru₃O₁₂, a dense, inorganic oxide formed by high-pressure synthesis, increases in volume by about 4.4% when heated, and this expanded state is retained even after cooling. Normally, such a large volume change is accompanied by substantial changes in the crystal structure or chemical reactions and alters the material properties. In this research, however, NIMS elucidated that “giant irreversible expansion” occurs through atomic rearrangement within a crystal, while retaining the basic crystal framework, i.e., the symmetry of the crystal structure, and chemical composition. The research result demonstrates a new thermal response mechanism in oxide materials, and is expected to lead to new design guidelines for ceramic materials used in a high-temperature environment or materials that control thermal deformation and stress.

The planar Hall effect is a tabletop diagnostic tool for special quantum properties useful in basic research and technological applications. Or so it was thought, because careful calculation by Kobe University researchers clarifies the conditions under which this effect may also appear in classical materials. This makes the diagnostic more meaningful and enables more purposeful design.

Excessive bite force does not cause alveolar bone loss but significantly worsens it when combined with periodontitis, report researchers in a new study. While traumatic occlusion has long been suspected to exacerbate periodontitis, the molecular mechanisms behind this link were poorly understood. Now, using mouse models of both conditions separately and combined, the researchers conducted comprehensive gene expression analysis across multiple periodontal tissues, identifying key inflammatory pathways upregulated in bone when both conditions were present.