CRISPR tagged posts

This new blood test could detect cancer before it shows up on scans

Caption: When the biomarker is detected, the Cas12a protein used for CRISPR cuts the DNA holding the quantum dots, which causes a measurable drop in SHG signal.
Credit: Han Zhang, Shenzhen University

A new CRISPR-powered light sensor can detect the faintest molecular signs of cancer in a drop of blood. A new light-based sensor can spot incredibly tiny amounts of cancer biomarkers in blood, raising the possibility of earlier and simpler cancer detection. The technology merges DNAnanotechnology, CRISPR, and quantumdots to generate a clear signal from just a few molecules. In lung cancer tests, it worked even in real patient serum samples. Researchers hope it could eventually power portable blood tests for cancer and other diseases.

Scientists have designed a powerful light based sensor...

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New insight into the immune signals driving inflammation in multiple sclerosis

New insight into the immune signals driving inflammation in multiple sclerosis
Representative confocal microscopy image of a cross-section of the whole spinal column of an EAE animal co-transferred with control (red) and Tgfbr1-KO (green) cells. Credit: de la Rosa, Kendirli et al

Multiple sclerosis (MS) is a chronic neurological disease characterized by nerve damage and consequent impairments in vision, movement, balance and mental function. In MS, the immune system mistakenly starts attacking myelin, the protective sheath that surrounds axons (i.e., nerve fibers) in the brain, spinal cord and optic nerves.

Macrophages, immune cells responsible for detecting damaged cells, germs or other debris in the central nervous system (CNS) and eliminating them, have been found to play a key role in MS...

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New CRISPR system for Gene Silencing Doesn’t Rely on Cutting DNA

Scientists from Vilnius University’s (VU) Life Sciences Center (LSC) have discovered a unique way for cells to silence specific genes without cutting DNA. This research, led by Prof. Patrick Pausch and published in the journal Nature Communications, reveals a new way to silence genes that is akin to pressing a “pause” button on certain genetic instructions within cells.

The research team, including doctoral student Rimvydė Čepaitė, Dr. Aistė Skorupskaitė, undergraduate Gintarė Žvejyte and Prof. Pausch at Vilnius University, working alongside an international team, uncovered how cells use a specific system to locate and silence unwanted DNA. This system, which could eventually enable safer gene modifications, shows promise for repairing faulty genes that cause diseases.

“U...

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Rare Diseases Point to Connections Between Metabolism and Immunity

Jeffrey Rathmell, PhD, left, and Andrew Patterson, PhD, have discovered a new set of metabolic genes that are important for immune cell function. (photo by Susan Urmy)

Overlap in genes suggests a potential new class of inborn errors of immunometabolism. Inherited diseases of metabolism and immunity have more in common than previously recognized, according to a new study published in the journal Science Immunology. The findings point to a new set of metabolic genes that are important for the function of immune system T cells, and they offer insights that could improve care for patients with these disorders.

The study examined genes that cause inborn errors of metabolism (disorders of the processes that cells use to convert food to energy) and inborn errors of immunity (disorders that...

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