Targeted cell removal offers treatment hope
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Updates every hour. Last Updated: 3-Sep-2025 06:11 ET (3-Sep-2025 10:11 GMT/UTC)
A team of scientists at Kyoto University’s Institute for Integrated Cell-Material Sciences (iCeMS) has created a protein-based therapeutic tool that could change the way we treat diseases caused by harmful or unnecessary cells. The new tool, published in Nature Biomedical Engineering, involves a synthetic protein called Crunch, short for Connector for Removal of Unwanted Cell Habitat. Crunch uses the body’s natural waste removal system to clear out specific target cells, offering hope for improved treatments for cancer, autoimmune diseases, and other diseases where harmful cells cause damage.
A metal-free organic liquid has been developed that phosphoresces at room temperature. Rapid phosphorescence endows the liquid with the highest phosphorescence efficiency in air among organic liquids. The new molecule has a 3-bromo-2-thienyl diketone backbone with attached dimethylocylsilyl (DMOS) groups. Attaching one DMOS group liquefies the backbone, whereas attaching two DMOS groups prevents molecular aggregation, which typically weakens phosphorescence. This new, flexible liquid can be applied to develop flexible electronic devices.
Cyclic ketene acetals (CKAs) contain carbon atoms and oxygen arranged in a ring-like structure and are ideal for designing degradable polymers. However, the complex reaction pathways and mechanistic factors involved during the polymerization process remain unclear. In a new study from Doshisha University, researchers have developed a simulation model and conducted in-depth nuclear magnetic resonance spectroscopic analyses to determine the critical factors that can influence radical ring-opening polymerization of CKAs.
Stretchable electronics have broad applications, including wearable sensors and curved displays. However, the electronic performance of stretchable materials is poor in comparison to non-stretchable rigid electronic materials. In a new study, researchers have developed a new technique, using kiri-origami structures, that combines the benefits of both origami and kirigami to achieve stretchable devices with high-performance non-stretchable materials. This innovative technique can lead to the development of advanced stretchable electronic devices.
Researchers from The University of Osaka have found that they can keep mouse uterine tissue alive outside of the body, allowing them to directly observe embryonic implantation and development. Their technique brings hope for patients with infertility, and may allow for the development of therapies to treat recurrent implantation failure and improve the chance of implantation success using assisted reproductive technologies.Researchers from The University of Osaka have found that they can keep mouse uterine tissue alive outside of the body, allowing them to directly observe embryonic implantation and development. Their technique brings hope for patients with infertility, and may allow for the development of therapies to treat recurrent implantation failure and improve the chance of implantation success using assisted reproductive technologies.
Researchers from The University of Osaka found that macrophages use microautophagy, mediated by Rab32-positive lysosome-related organelles, to directly engulf damaged mitochondria and other organelles. This was discovered to be independent of macroautophagy. Key factors in this process include Rab32 GTPase, PI(3,5)P2, ubiquitination, and p62/SQSTM1. By clearing mitochondria, microautophagy promotes metabolic reprogramming toward glycolysis, supporting M1 macrophage polarization. Loss of Rab32/38 disrupts this process, highlighting microautophagy’s role in regulating macrophage function.
Pregnancy complications such as preeclampsia and preterm birth often arise during the late stage of pregnancy. However, researchers have primarily relied on placental cells from early pregnancy to study these conditions, which may not fully reflect the biology of late-stage complications. Now, a research team in Japan has successfully developed human placental stem cells from the smooth chorion (a part of the placenta) taken from full-term pregnancies. These new stem cells, called Ch-TS cells, share the same characteristics as placental stem cells from early pregnancy and can develop into the key cell types essential for proper placental function. This advancement allows scientists to study placental complications using cells from the actual time period when these complications occur, potentially leading to better understanding, earlier detection, and improved treatments for pregnancy-related conditions.