This CRISPR breakthrough turns genes on without cutting DNA - Science Daily

Original story from Cornell University (NY, USA). A new engineered gene editing system, proven in bacteria and with promise for use in plants, animals and humans, addresses some of the limitations of current gene editing tools with the hope of improving their applications for research, for better crops or to treat diseases.

A first-in-human Phase 1 clinical trial from Cleveland Clinic found that a single infusion of a CRISPR-Cas9 gene-editing therapy produced lasting reductions in LDL ("bad") cholesterol and triglycerides in people with lipid disorders that had not responded adequately to medications. The study followed 15 patients for one year to determine whether the cholesterol and triglyceride reductions previously reported after two months would continue over time. After 12 months, participants who received the highest dose had a 52.5% reduction from baseline in LDL cholesterol and a 47.8% drop in triglycerides.

For some of the most aggressive blood cancers, a stem cell transplant may be the only treatment with the potential to cure the disease. Even so, cancers can return after transplantation, leaving doctors with limited options. A new clinical trial led by researchers at Washington University School of Medicine in St. Louis suggests that genetically modifying donor stem cells before transplantation could make follow-up cancer treatments safer and potentially more effective. The strategy removes a specific protein from donor cells so that therapies aimed at that protein can attack cancer while sparing healthy transplanted cells.

We’re introducing a new life sciences research group and laboratory at Anthropic. Our focus is on fundamental biology research using Claude: exploring datasets of DNA to identify uncharacterized protein families, generating hypotheses at scale, and testing them through experiments in the lab. This post introduces the team behind this work and shares early results in which Claude discovered a novel enzyme system with properties reminiscent of CRISPR, with only high-level direction from our scientists. Many discoveries that have revolutionized biology and medicine started with a scientist noticing something odd in the staggering diversity of molecular machines found in nature. Restriction enzymes, proteins that cut DNA at specific short sequences, were found in bacterial immune systems, where they destroy the DNA of invading viruses. Researchers realized they could use these enzymes to cut DNA at chosen places and splice genes from one organism into another, which launched the biotechnology industry. Taq polymerase, an enzyme that copies DNA at high temperatures, was identified in a bacterium in a Yellowstone hot spring.

The Southern Fish is home to the bright luminary Fomalhaut, a lovely young star that shines brightly in the evening sky. Look south late this evening to find the bright star Fomalhaut in Piscis Austrinus above the horizon, forming a large triangle with the Moon to its upper right and Saturn to its upper left. Credit: Stellarium/USGS/Celestia/Clementine