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News for Healthier Living
Scientists Discover Why High Levels of the Amino Acid Cysteine Are Toxic to Cells
 Cysteine is the only protein-building amino acid that is acutely toxic to human cells when present in excess. Cells avoid this toxicity by converting cysteine into glutathione. Scientists had long puzzled over why excess cysteine is dangerous, while a large amount of glutathione is safe. A new study shows that excess cysteine causes the release of iron, which accumulates inside mitochondria and ultimately triggers cell death. Glutathione gives the cell many of the same advantages as free cysteine, without unleashing unsafe levels of iron. Beyond clarifying fundamental mysteries underlying the basic biology of human cells, the findings may also have implications for cancers that take up large amounts of cysteine.
September 21, 2026
September 21 2026September 18 2026September 17 2026September 16 2026September 15 2026September 14 2026September 11 2026 - UNC Study Develops Data-Driven Tool to Help Oncologists Identify High-Risk Periods for Metastatic Breast Cancer Patients
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- New 'Smart' Nanoparticles Help the Immune System Better Attack Tumours
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- Uma Scientists Develop A New Technology That Improves The Diagnosis Of Allergy To Antibiotics Such As Amoxicillin And Other Penicillins
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September 10 2026September 9 2026 - How AI Is Changing Construction From Classroom to Job Site
- UTHealth Houston Team Reverses Nerve Pain in Diabetic Mice
- Keeping Elite Women's Basketball Players Healthy During International Competition
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- Vitamin A Metabolite Preserves T Cells' Function as KAIST Points to a New Strategy for Treating Intractable Brain Tumors
- Surgery-Centered Framework Reshapes Hepatocellular Carcinoma Care
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September 8 2026September 7 2026
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