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Scientists discover molecular secrets of 2,000-year-old Chinese herbal remedy - 0 views

  • For roughly two thousand years, Chinese herbalists have treated Malaria using a root extract, commonly known as Chang Shan
  • Now, researchers from the Harvard School of Dental Medicine have discovered the molecular secrets behind this herbal extract's power.
  • recent studies suggest that halofuginone, a compound derived from this extract's bioactive ingredient, could be used to treat many autoimmune disorders
  • ...13 more annotations...
  • halofuginone (HF) triggers a stress-response pathway that blocks the development of a harmful class of immune cells
  • prevents the autoimmune response without dampening immunity altogether
  • This compound could inspire novel therapeutic approaches to a variety of autoimmune disorders."
  • exciting example of how solving the molecular mechanism of traditional herbal medicine can lead both to new insights into physiological regulation and to novel approaches to the treatment of disease
  • Prior research had shown that HF reduced scarring in tissue, scleroderma (a tightening of the skin), multiple sclerosis, scar formation and even cancer progression.
  • Recognized only since 2006, Th17 cells are "bad actors," implicated in many autoimmune diseases such as inflammatory bowel disease, rheumatoid arthritis, multiple sclerosis and psoriasis
  • minute doses of HF reduced multiple sclerosis in a mouse model
  • Further analysis showed that HF was somehow turning on genes involved in a newly discovered pathway called the amino acid response pathway, or AAR
  • evidence that it extends lifespan and delays age-related inflammatory diseases in animal studies on caloric restriction
  • during a power outage we conserve what little juice we have left on our devices, foregoing chats in favor of emergency calls," said Whitman. "Cells use similar logic
  • Researchers do not yet fully understand the role that amino acid limitation plays in
  • researchers were able to home in on a single amino acid, called proline, and discovered that HF targeted and inhibited a particular enzyme (tRNA synthetase EPRS) responsible for incorporating proline into proteins that normally contain it.
  • proline also reversed other therapeutic effects of HF, inhibiting its effectiveness against the malaria parasite as well as certain cellular processes linked to tissue scarring
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