Archive for the ‘biotech/medical’ category: Page 884
Aug 28, 2022
Scientists Grow “Synthetic” Embryo With Brain and Beating Heart — Without Eggs or Sperm
Posted by Dan Breeden in categories: biotech/medical, neuroscience
We have arrived at Aldous Huxleys Brave new world.
Scientists from the University of Cambridge have created model embryos from mouse stem cells that form a brain, a beating heart, and the foundations of all the other organs of the body. It represents a new avenue for recreating the first stages of life.
The team of researchers, led by Professor Magdalena Zernicka-Goetz, developed the embryo model without eggs or sperm. Instead, they used stem cells – the body’s master cells, which can develop into almost any cell type in the body.
Aug 28, 2022
Metformin & Rapamycin Show Combined Benefits in New Study
Posted by Montie Adkins in categories: biotech/medical, life extension
They boost each other and block side effects? (In mice)
Rapamycin and metformin are viewed by many as the two most promising anti-aging drugs, but now scientists have found that these drugs can work hand in hand and show combined benefits, boosting each other’s effectiveness and blocking side effects — or at least that’s what we’ve seen in mice.
Continue reading “Metformin & Rapamycin Show Combined Benefits in New Study” »
Aug 28, 2022
Electric Fish Genomes Reveal How Evolution Repeats Itself
Posted by Shubham Ghosh Roy in categories: biotech/medical, evolution
By studying how electric organs arose in different lineages of fish, scientists gain new insights into a long-standing question of evolutionary biology.
Aug 28, 2022
Scientists Just Genetically Edited a Million Years of Evolution Into Mouse DNA
Posted by Quinn Sena in categories: bioengineering, biotech/medical, evolution, genetics
O.o!!!!!
Changing the number of chromosomes an animal has can take millions of generations to happen in nature through the course of evolution – and now, scientists have been able to make these same changes in lab mice in a relative blink of an eye.
The new technique using stem cells and gene editing is a major accomplishment, and one that the team is hoping will reveal more about how the rearrangement of chromosomes can influence the way that animals evolve over time.
Continue reading “Scientists Just Genetically Edited a Million Years of Evolution Into Mouse DNA” »
Aug 28, 2022
Simple Gene Circuits Hint at How Stem Cells Differentiate
Posted by Shubham Ghosh Roy in categories: bioengineering, biotech/medical, chemistry, mathematics
Mathematical models suggest that with just a few more genes, it might be possible to define hundreds of cellular identities, more than enough to populate the tissues of complex organisms. It’s a finding that opens the door to experiments that could bring us closer to understanding how, eons ago, the system that builds us was built.
The Limits of Mutual Repression
Developmental biologists have illuminated many tipping points and chemical signals that prompt cells to follow one developmental pathway or another by studying natural cells. But researchers in the field of synthetic biology often take another approach, explained Michael Elowitz, a professor of biology and bioengineering at Caltech and an author of the new paper: They build a system of cell-fate control from scratch to see what it can tell us about what such systems require.
Aug 27, 2022
Recently Discovered Molecule Kills Hard-To-Treat Cancers
Posted by Saúl Morales Rodriguéz in categories: biotech/medical, mathematics
A new molecule created by a researcher at the University of Texas at Dallas kills a variety of difficult-to-treat cancers, including triple-negative breast cancer, by taking advantage of a weakness in cells that was not previously targeted by existing drugs.
The research, which was conducted using isolated cells, human cancer tissue, and mouse-grown human cancers, was recently published in Nature Cancer.
A co-corresponding author of the study and an associate professor of chemistry and biochemistry in the School of Natural Sciences and Mathematics at the University of Texas at Dallas, Dr. Jung-Mo Ahn has dedicated more than ten years of his career to developing small molecules that target protein-protein interactions in cells. He previously created potential therapeutic candidate compounds for treatment-resistant prostate cancer and breast cancer using a method called structure-based rational drug design.
Aug 27, 2022
Highly Sensitive, Mass Producible Organic Photodetectors for Medical Sensors, Fingerprint Recognition
Posted by Saúl Morales Rodriguéz in categories: biotech/medical, mobile phones
New green-light absorbing photodetectors could be useful for medical sensors, fingerprint recognition, and more.
New green-light absorbing transparent organic photodetectors that are highly sensitive and compatible with CMOS fabrication methods have been developed and demonstrated by researchers. Incorporating these new photodetectors into organic-silicon hybrid image sensors could be useful for many applications. These include light-based heart-rate monitoring, fingerprint recognition, and devices that detect the presence of nearby objects.
Whether used in scientific cameras or smartphones, most of today’s imaging sensors are based on CMOS technology and inorganic photodetectors that convert light signals into electric signals. Although photodetectors made from organic materials are attracting attention because they can help boost sensitivity, for example, it has thus far proven difficult to fabricate high-performance organic photodetectors.
Aug 27, 2022
Shrouded in Mystery: Scientists Finally Discover the Origin of Chromatin
Posted by Saúl Morales Rodriguéz in categories: biotech/medical, evolution, genetics
Analysis of the genome and proteome shows that eukaryotic evolution gave rise to the regulatory function of chromatin.
Two meters of DNA
DNA, or deoxyribonucleic acid, is a molecule composed of two long strands of nucleotides that coil around each other to form a double helix. It is the hereditary material in humans and almost all other organisms that carries genetic instructions for development, functioning, growth, and reproduction. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).
Aug 27, 2022
Artificial Intelligence Model Can Detect Parkinson’s From Breathing Patterns
Posted by Dan Breeden in categories: biotech/medical, information science, robotics/AI
Summary: A newly developed artificial intelligence model can detect Parkinson’s disease by reading a person’s breathing patterns. The algorithm can also discern the severity of Parkinson’s disease and track progression over time.
Source: MIT
Parkinson’s disease is notoriously difficult to diagnose as it relies primarily on the appearance of motor symptoms such as tremors, stiffness, and slowness, but these symptoms often appear several years after the disease onset.