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Archive for the ‘biotech/medical’ category: Page 453

Aug 18, 2023

Immune Checkpoint Inhibitor Demonstrates Significant Glioblastoma Regression

Posted by in categories: biotech/medical, neuroscience

Glioblastoma is a fast-growing and aggressive brain tumor. As one of the most common malignant brain tumors, life expectancy after diagnosis is between 14 and 16 months. Roughly 1% of patients survive more than ten years with the longest patients living over 20 years. Symptoms include headaches, double vision, vomiting, loss of appetite, changes in mood and personality, inability to accurately think and learn, seizures, and difficulty speaking. Unfortunately, there is no cure, and treatment options include radiation and chemotherapy with limited efficacy. Glioblastoma is difficult to treat due to its location in the brain, its resistance to common treatment, the brains limited ability to heal itself, disrupted blood supply, blood vessel leakage, seizures, and neurotoxicity from treatments. Due to limited treatment and the life expectancy of this devastating disease, researchers at the SALK Institute in La Jolla, California have set out to find better ways to treat glioblastoma and prolong survival in patients.

Immune checkpoint inhibitors (ICIs) are a form of immunotherapy that block receptors on immune cells which activate them to kill tumor cells. The ICI using by the SALK group is known as anti-CTLA-4, which binds to the CTLA-4 protein on the T immune cells responsible for killing infected cells. This therapy was generated by Dr. James Allison at the MD Anderson Comprehensive Cancer Center in Houston, Texas. For his work, he was awarded the Nobel Prize in Physiology or Medicine in 2018. While this therapy proved effective in other cancers such as melanoma, it was unclear its effect in glioblastoma. The researchers at SALK recently published their findings on the effect of anti-CTLA-4 on glioblastoma.

The study published in Immunity by Dr. Susan Kaech and colleagues at SALK demonstrated prolonged survival of mice with glioblastoma after treatment with anti-CTLA-4. They also discovered that the treatment was largely dependent on CD4+ T cells, which aid in activating other cells, and not CD8+ T cells, which directly kill the tumor. More specifically, CD4+ T cells were found to infiltrate the brain and trigger other immune cells, like microglia to destroy cancerous cells. In Kaech’s work, the lab significantly shrunk the glioblastoma in mice and in some cases completely eradicated it.

Aug 17, 2023

This Scientist Is Building Custom Gene-Editing Tools—And Stands To Make Billions

Posted by in categories: biotech/medical, genetics

Benjamin Oakes’ Scribe Therapeutics is developing specialized Crispr proteins to tackle a wide range of diseases–and it’s garnered deals with Big Pharma potentially worth over $4 billion.

Aug 17, 2023

Another step toward using animal organs: Pig kidney sustains brain-dead man for a month

Posted by in category: biotech/medical

Pigs might help solve the organ transplant crisis if researchers can make the process safe enough. Preventing rejection in brain-dead subjects is a step toward that goal.

Aug 17, 2023

Next Generation Cancer Therapy Reveals Major Opportunity

Posted by in categories: biotech/medical, futurism

GTB-3550 is the company’s first TriKE® product candidate that was evaluated in Phase 1 clinical trials for the treatment of acute myeloid leukemia (AML), myelodysplastic syndrome (MDS), and other CD33+ hematopoietic malignancies. Phase 1 clinical trials were shown to be both safe and well-tolerated, as well as proving the molecule’s clinical concept and providing a framework for future product candidates.

GTB-3650 is a second-generation protein developed to treat AML and MDS. It has replaced GTB-3550 and utilizes camelid nanobody technology. GTB3650 has successfully completed pre-clinical trials and is in the good manufacturing process (GMP) stage, which is usually the last developmental milestone before progressing into phase 1 clinical trials.

Aug 17, 2023

Durham gene editing firm strikes big deal; it’s ‘right-sized;’ 80 employees exit

Posted by in categories: bioengineering, biotech/medical, finance

DURHAM – A big licensing deal potentially worth hundreds of millions of dollars with an Austrlia-based company at the same time also has triggered what Precision Biosciences calls a “right-sized” organization of the company.

“Prior to the announcement, we had 190 employees, with 110 going forward with Precision. Most of the 80 employees went with Imugene, with the remainder parting ways with a reduction in force,” Mei Burris, director of investor relations and finance for the company,” told WRAL TechWire.

What “right-sized” means was not immediately explained in the company’s announcement Tuesday night after the markets closed. The company’s stock is trading at under $1 and it lost $12 million in its most recent quarter ending June 30.

Aug 17, 2023

Schizophrenia Drugs May Have Been Off Target For Decades, Study Finds

Posted by in categories: biotech/medical, chemistry, neuroscience

A study that peered into live mouse brains suggests for nearly 70 years we’ve been targeting the wrong neurons in our design of antipsychotic drugs.

Untangling the vast web of brain cells and determining how drugs work upon them is a tough task. Using a miniature microscope and fluorescent tags, a team of researchers led by Northwestern University neuroscientist Seongsik Yun discovered that effective antipsychotic drugs cling to a different type of brain cell than scientists originally thought.

Just like research suggesting depression might not be a chemical imbalance in serotonin levels, our understanding of schizophrenia treatments may need a rethink if widely-used antipsychotics are targeting different neurons than expected.

Aug 17, 2023

Scientists Successfully Recreate and Mathematically Validate Two Molecular Languages at the Origin of Life

Posted by in categories: biotech/medical, chemistry, nanotechnology

Canadian researchers at the University of Montreal have successfully recreated and mathematically confirmed two molecular languages at the origin of life.

Their groundbreaking findings, recently published in the Journal of American Chemical Society, pave the way for advancements in nanotechnologies, offering potential in areas like biosensing, drug delivery, and molecular imaging.

Living organisms are made up of billions of nanomachines and nanostructures that communicate to create higher-order entities able to do many essential things, such as moving, thinking, surviving, and reproducing.

Aug 17, 2023

Genetic insights into human cortical organization and development through genome-wide analyses of 2,347 neuroimaging phenotypes

Posted by in categories: biotech/medical, genetics

Genome-wide association analyses of magnetic resonance imaging data describe the genetic architecture of 13 cortical phenotypes at both global and regional levels, implicating neurodevelopmental and constrained genes.

Aug 17, 2023

Connective Tissue Cells Reprogrammed Into Muscle Stem Cells Without Genetic Engineering

Posted by in categories: bioengineering, biotech/medical, genetics

A new method allows large quantities of muscle stem cells to be safely obtained in cell culture. This provides a potential for treating patients with muscle diseases – and for those who would like to eat meat, but don’t want to kill animals.

Aug 17, 2023

Elon Musk on Neuralink: Solving Brain Diseases & Reducing the Risk of AI

Posted by in categories: biotech/medical, Elon Musk, existential risks, genetics, robotics/AI, singularity

Elon Musk delves into the groundbreaking potential of Neuralink, a revolutionary venture aimed at interfacing with the human brain to tackle an array of brain-related disorders. Musk envisions a future where Neuralink’s advancements lead to the resolution of conditions like autism, schizophrenia, memory loss, and even spinal cord injuries.

Elon Musk discusses the transformative power of Neuralink, highlighting its role in restoring motor control after spinal cord injuries, revitalizing brain function post-stroke, and combating genetically or trauma-induced brain diseases. Musk’s compelling insights reveal how interfacing with neurons at an intricate level can pave the way for repairing and enhancing brain circuits using cutting-edge technology.

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