Tokyo, Japan – Researchers at Tokyo Metropolitan University have studied how fruit flies tune their development in response to environmental changes (diapause). Studying fruit fly strains from different latitudes across Japan, they showed that the sensitivity to starting reproductive diapause varies smoothly with local conditions. Through genetic sequencing, they found that the timeless (tim) gene plays a key role, adding to growing evidence that diapause is strongly affected by genes regulating circadian rhythm.

Weight loss is common in Parkinson’s disease, but its biological basis has been unclear. Researchers at Fujita Health University show that this loss reflects reduced body fat, not muscle, along with a shift in energy metabolism. Patients exhibited impaired carbohydrate metabolism, mitochondrial dysfunction, and increased fat breakdown with ketone body production. These changes were most pronounced in thinner patients and those with more advanced disease, revealing a hidden energy crisis in Parkinson’s disease.

A new artificial intelligence-driven pipeline developed in a collaborative research combines protein structure prediction, sequence design, and live-cell screening together to enable rapid conversion of antibody sequences into functional intracellular antibodies (intrabodies) that are stable within living cells. By preserving antigen-binding regions and improving structural stability, the approach overcomes major barriers encountered in intrabody development—emerging as a simpler, more cost-effective tool for diagnostics, imaging, and biomedical research.

Understanding the thermodynamic basis of ligand recognition by G-protein-coupled receptors (GPCRs), especially in terms of enthalpy-entropy compensation, is crucial for drug design and development. However, such thermodynamic parameters for GPCRs have been largely unexplored. To address this gap, researchers investigated the binding enthalpy and entropy characteristics of the histamine H₁ receptor with doxepin and its individual isomers, revealing new insights for improving drug selectivity and reducing side effects.

High-entropy alloys are promising advanced materials for demanding applications, but discovering useful compositions is difficult and expensive due to the vast number of possible element combinations. Now, researchers have developed a novel AI-driven framework that integrates experimental data, computational modeling, and cross-disciplinary expert knowledge extracted from scientific literature. By combining these sources in a way that accounts for uncertainty, their approach can make reliable predictions even for poorly studied alloy compositions, outperforming conventional data-driven machine learning methods that rely on training data alone.

When AI powered prosthetic arms that move autonomously become widespread, understanding how people feel about them and accept them will be crucial. In this study, we used virtual reality to simulate a situation in which a participant’s own arm was replaced by a robotic prosthetic arm, and examined how the prosthesis movement speed affects embodiment, including body ownership, the sense of agency, usability, and social impressions of the robot such as competence and discomfort. We found that both overly fast and overly slow movements reduced body ownership and usability, whereas a moderate speed close to natural human reaching, with a movement duration of about one second, produced the most positive impressions.

Kyoto, Japan -- Cell and gene therapies, or CGT, have come a long way since they were first introduced. In the last few decades, both cell therapy -- the transplantation of living cells -- and gene therapy -- the use of genetic material to modify cell functions -- have been increasingly incorporated into clinical practice.

Various challenges and advances have propelled the use of CGT in innovative treatments for diseases that had otherwise proven difficult to conquer. Yet progress has been uneven across different therapies and regions. To accelerate CGT innovation and improve access, it is essential to take a comprehensive look at past research achievements and qualitatively evaluate relevant factors.

These challenges motivated a team of researchers at Kyoto University to take a hard look at past data and assess the current standing of cell and gene therapies in cooperation with Arthur D. Little Japan. Using the PubMed and OpenAlex databases, the team accessed over 160,000 papers related to CGT published between 1989 and 2023. They then conducted a bibliometric analysis of the historical development of these therapies, including contributions by region.

In the context of global decarbonization, reducing energy consumption in the building sector is an urgent issue. We have developed a next-generation building energy evaluation model that combines rule-based symbolic AI computing with VR technology. This model enables real-time visualization and simultaneous evaluation of the energy-saving effects and indoor thermal comfort during the design stage of a Zero-Energy Building. This approach will have a wide range of applications in the design of next-generation smart buildings.

The Interactions Collaboration has announced the winning images of the 2025 Global Physics Photowalk.