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Archive for the ‘biotech/medical’ category: Page 221

Mar 29, 2024

Model suggests how ancient RNA may have gained self-cutting ability essential for life

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

Scientists have long pondered the beginnings of life on Earth. One theory is that RNA, which is ubiquitous across all domains of life, played a central role in early life. Similar to DNA, RNA possesses the ability to store genetic information. However, to initiate life’s processes, early RNA must have also possessed the capability to self-replicate and catalyze biochemical reactions independently, without the assistance of specialized enzymes.

Mar 29, 2024

Constructing ‘on-gel’ alveolar organoids as a new screening platform

Posted by in categories: biotech/medical, chemistry

A study led by Professor Shimpei Gotoh (Department of Clinical Application), introduces a new culturing method to generate alveolar organoids suitable for medium-and high-throughput screening and identified several chemicals with synergistic effects on AT1 cell differentiation. The work is published in the journal Stem Cell Reports.

Mar 29, 2024

Collective intelligence: A unifying concept for integrating biology across scales and substrates

Posted by in category: biotech/medical

A Perspective on how the tools of behavioral science and the emerging field of diverse intelligence help to understand decision-making of cellular collectives in evolutionary and biomedical contexts.

Mar 29, 2024

Fine tuning of CpG spatial distribution with DNA origami for improved cancer vaccination

Posted by in category: biotech/medical

Congratulations to Yang (Claire) Zeng and her team for their work on DoriVac, a DNA origami vaccine which utilizes precisely spaced CpG oligonucleotides to enhance immunological responses against chosen antigens.


The spacing of ligands presented to cells can have a huge impact on cellular responses. DNA origami is used to block structures to control the distribution of Toll-like receptor ligands and optimize presentation in the activation of dendritic cells in cancer immunotherapy.

Mar 29, 2024

Neuropeptide Lacking in Diabetics Promotes Wound Healing

Posted by in categories: biotech/medical, life extension, neuroscience

“In adults with diabetes alone—where poor blood flow can lead to quickly worsening wounds that are often very slow or impossible to heal—the lifetime risk of developing a diabetic foot ulcer (DFU), the most common diabetes-related wound, is 20–35 percent and this number is rising with increased longevity and medical complexity of people with diabetes,” stated lead author, Yen-Zhen Lu, PhD, an investigator at ARMI.

Nociceptors— neurons that sense pain, tissue damage, and inflammation, among other functions— respond to wounds by producing a neuropeptide called calcitonin gene-related peptide (CGRP). “Nociceptor endings grow into injured skin and muscle tissues and signal to immune cells through the neuropeptide CGRP during the healing process,” the authors wrote. Immune cell response in neutrophils, monocytes, and macrophages are modified to encourage active repair in the region.

Individuals with diseases like diabetes or elderly people have reduced production of CGRP, leading to poor, inefficient, or incomplete wound healing. The new study explores the impact of CGRP alone by introducing it into diabetic mice as well as mice without nociceptors. “Delivery of an engineered version of CGRP accelerated wound healing and promoted muscle regeneration,” the authors wrote. “Remarkably, this neuropeptide acts on immune cells to control them, facilitating tissue healing after injury,” added co-author Mikaël Martino, PhD, associate professor, ARMI.

Mar 29, 2024

Novel AMD treatment holds potential to prevent blindness

Posted by in category: biotech/medical

Pharma startup Orsight sets its sights on preserving vision in patients with AMD.

Mar 29, 2024

New material neutralizes 96-percent of virus cells using nanospikes

Posted by in categories: biotech/medical, materials

This ‘smooth’ silicon wafer is actually covered in very tiny, virus-slaying needles.

Mar 29, 2024

Can Transhumanism Rescue The West From The Threat Of AI?

Posted by in categories: biotech/medical, genetics, geopolitics, robotics/AI, transhumanism

Here’s a new Forbes review by world leading futurist Tracey Follows on the book: Transhuman Citizen:


What does Transhumanism, Ayn Rand and the U.S. Presidential election have in common? They are the connecting themes in a new book by Ben Murnane entitled, “Transhuman Citizen”

The book tells the story of Zoltan Istvan, a one-time U.S. Presidential candidate, who drove a coffin-shaped bus around the U.S. attempting to persuade the public that death is not inevitable and that transhumanism is a political as much as a scientific solution to the troubles of the 21st Century.

Continue reading “Can Transhumanism Rescue The West From The Threat Of AI?” »

Mar 29, 2024

Neurological Shadows: The Cognitive Costs of Sleep Apnea Unraveled

Posted by in categories: biotech/medical, neuroscience

A new study indicates a link between sleep apnea and increased memory or thinking problems, based on self-reported data from over 4,000 participants.

People who experience sleep apnea may be more likely to also have memory or thinking problems, according to a preliminary study that will be presented at the American Academy of Neurology’s 76th Annual Meeting taking place April 13–18, 2024, in person in Denver and online. The study shows a positive association but did not determine whether sleep apnea causes cognitive decline.

Sleep apnea is when people stop and restart breathing repeatedly during sleep which can lower oxygen levels in the blood. Symptoms include snorting, gasping, and breathing pauses. People with the disorder may also experience morning headaches or have trouble focusing on tasks.

Mar 29, 2024

This Common Backyard Insect Is Helping Scientists Develop Invisibility Devices

Posted by in categories: biotech/medical, engineering, solar power

Leafhoppers, a common backyard insect, secrete and coat themselves in tiny mysterious particles that could provide both the inspiration and the instructions for next-generation technology, according to a new study led by Penn State researchers. In a first, the team precisely replicated the complex geometry of these particles, called brochosomes, and elucidated a better understanding of how they absorb both visible and ultraviolet light.

This could allow the development of bioinspired optical materials with possible applications ranging from invisible cloaking devices to coatings to more efficiently harvest solar energy, said Tak-Sing Wong, professor of mechanical engineering and biomedical engineering. Wong led the study, which was published today (March 18) in the Proceedings of the National Academy of Sciences of the United States of America (PNAS).

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