E. coli modificada produce gadusol, un compuesto de protector solar natural

13 de mayo de 2026

Reportado por IA

Investigadores han modificado bacterias para producir gadusol, una sustancia con protección contra los rayos UV que se encuentra en las huevas de los peces. Este avance podría favorecer el desarrollo de protectores solares transparentes y respetuosos con el medio ambiente. El estudio fue dirigido por un equipo de la Universidad de Jiangnan, en China.

Un equipo liderado por Ping Zhang insertó genes de pez cebra en Escherichia coli. Las bacterias obtuvieron las enzimas necesarias para producir gadusol, que se encuentra de forma natural en pequeñas cantidades en las huevas de peces cebra, salmones y esturiones, así como en el coral. Mediante el uso de pequeñas moléculas de ARN y el ajuste de las condiciones de crecimiento, los científicos aumentaron la producción casi 93 veces, pasando de 45,2 miligramos por litro a 4,2 gramos por litro de medio.

Study finds madecassic acid, a Centella compound used in skincare, can inhibit drug-resistant E. coli in lab tests

21 de abril de 2026 Reportado por IA Imagen generada por IA Verificado por hechos

Researchers at the University of Kent, working with University College London, report that madecassic acid—a compound derived from the medicinal herb Centella asiatica and widely used in skincare—can inhibit the growth of antibiotic-resistant E. coli by targeting a bacterial respiratory system not found in humans or other animals.

Scientists engineer probiotic bacteria to target mouse tumors

Researchers at Shandong University have modified the probiotic bacterium Escherichia coli Nissle 1917 to produce the anticancer drug Romidepsin directly in tumors. In mouse models of breast cancer, the engineered bacteria accumulated in tumors and released the drug. The findings were published on March 17 in PLOS Biology.

Engineered algae removes microplastics from water

12 de mayo de 2026 Reportado por IA

Researchers at the University of Missouri have developed a modified strain of algae that captures microplastics from contaminated water by producing an orange-scented oil. The process also cleans wastewater and could support bioplastic production.

Ciencia

Researchers create 'zombie' cells from dead bacteria

Tecnología

UC San Diego researchers describe a gene-drive-like CRISPR system designed to reduce antibiotic resistance in bacteria

Salud

Scientists uncover bacterial mechanism for spreading antibiotic resistance

Scientists identify body's natural off switch for inflammation

Researchers at University College London have discovered how the body naturally shuts down inflammation using fat-derived molecules called epoxy-oxylipins. These molecules prevent the buildup of immune cells linked to chronic diseases like arthritis and heart disease. A study involving a drug that boosts these molecules showed faster pain relief and reduced harmful immune activity.

Scientists develop lipid-coated nanopores for enhanced blue energy

10 de marzo de 2026 Reportado por IA

Researchers at EPFL have created a new membrane using lipid-coated nanopores that boosts the efficiency of blue energy production from mixing saltwater and freshwater. The innovation allows ions to pass through more smoothly, generating up to three times more power than existing technologies. This advance could make osmotic energy a more viable renewable source.

10 de mayo de 2026 08:19