Category Health/Medical

Simply Shining Light on ‘Dinosaur Metal’ compound Kills Cancer Cells

Iridium with its organic coat which is hooked up to the protein albumin (HSA). Together that enter cancer cells and deliver the iridium photosensitizer to the nucleus. On irradiation with blue light, the iridium not only glows green, but converts oxygen in the cell to a toxic form called triplet oxygen, which kills the cell.
Credit: University of Warwick

A new compound based on Iridium, a rare metal which landed in the Gulf of Mexico 66 M years ago, hooked onto albumin, a protein in blood, can attack the nucleus of cancerous cells when switched on by light, University of Warwick researchers have found...

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Magnetic Teeth hold Promise for Materials and Energy

A single chiton tooth, showing the magnetite cusp.
Credit: Kisailus Biomimetics & Nanostructured Materials Lab

A mollusk with teeth that can grind down rock may hold the key to making next generation abrasion-resistant materials and nanoscale materials for energy. The mollusk, called a gumboot chiton, scrapes algae off ocean rocks using a specialized set of teeth made from the magnetic mineral magnetite. The teeth have the maximum hardness and stiffness of any known biomineral. Although magnetite is a geologic mineral commonly found in Earth’s crust, only a few animals are known to produce it, and little is known about how they make it.

A better understanding of the biomineralization process, combined with a thorough understanding of chiton tooth architecture and mechanics, could h...

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When Mucus can be Key Treating Colon and Airway diseases

New research at Malhotra lab reveals how cells control quantities of mucin released and could become a new avenue to treat several mucin-related diseases.

New research reveals how healthy cells in our bodies produce mucins – the main component of mucous, which protects our intestine and airway from pathogens, toxins and allergens. Scientists have already linked defects in mucins secretion to airway and colonic diseases, such as asthma or ulcerative colitis. Now, researchers at Malhotra’s laboratory in Barcelona, reveal how cells control quantities of mucin released and could become a new avenue to treat several mucin-related diseases.

Cells produce mucins at a constant rate, and when exposed to an allergen or pathogen, they produce more mucin in a rapid burst...

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Opposite effect: Protein widely known to Fight Tumors also Boosts Cancer Growth

UC San Diego researchers found that the PUMA protein works inside the cell’s mitochondria to switch energy production processes and stimulate cancer growth.
Credit: Xu Lab, UC San Diego

Researchers find evidence that genome ‘guardian’ can stimulate cancer. Researchers studying p53, the heralded cancer-fighting ‘guardian of the genome,’ found that the human protein also plays a role in promoting tumors, in addition to suppressing them. They found that the PUMA protein works inside the cell’s mitochondria to switch energy production processes and stimulate cancer growth. Search for a description of “p53” and it becomes clear that this human protein is widely known for its cancer-fighting benefits, leading to its renown as “the guardian of the genome.”

Scientists at the University of Ca...

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