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Salk Institute Researchers Create Microprotein Atlas Linking Brain Immune Cell Dysfunction to Alzheimer’s Disease

Salk Institute Researchers Create Microprotein Atlas Linking Brain Immune Cell Dysfunction to Alzheimer’s Disease

Researchers at the Salk Institute have developed the first microprotein atlas of the human frontal cortex, both with and without Alzheimer’s disease. This atlas, detailed in a study published in Nature Aging, integrates transcriptomics, mass spectrometry, and deep-learning-predicted spectra from postmortem brain samples to identify microproteins—small proteins typically 150 amino acids or fewer—that have been previously overlooked. The study identified 1,067 uncharacterized microproteins, some of which were expressed differently in Alzheimer’s disease samples, often showing higher overall microprotein expression. Specifically, the researchers focused on microglia, brain immune cells, and found a microprotein at the MKKS locus that was downregulated in Alzheimer’s disease. Knocking out the gene for this microprotein in microglia impaired mitochondrial respiration, suggesting its role in microglial bioenergetics and a potential link between microproteins and immune cell dysfunction in Alzheimer’s.
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Brain-Computer Interface Enables Paralyzed Patients to Control Digital Avatars for Speech and Movement

Brain-Computer Interface Enables Paralyzed Patients to Control Digital Avatars for Speech and Movement

Scientists at the University of California, San Francisco, have developed a new brain-computer interface (BCI) that allows paralyzed patients to communicate through both speech and upper-body gestures simultaneously via a virtual avatar. This BCI is the first of its kind to enable both speech and movement activities in a single device. Previous technologies could only facilitate one or the other. The system works by recording brain activity from patients with paralysis using electrodes implanted on the brain's surface as they attempt to speak, make gestures, or do both. Machine learning models then translate this brain activity into attempted phrases or body movements. A personalized, full-body avatar, created using the Unreal Engine video game development platform, performs the decoded speech and gestures in real time. This dual decoding capability allows participants to use speech alone, a gesture alone, or both simultaneously, offering a more natural and expressive form of communication.
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RUI Project Focuses on Mass Spectrometry Simulations for Post-Translational Modifications

RUI Project Focuses on Mass Spectrometry Simulations for Post-Translational Modifications

A scientific project, RUI: Simulations of MS Spectra, is actively engaged in simulating mass spectrometry (MS) spectra. The primary objective of this research is to thoroughly examine post-translational modifications (PTMs) and nucleosides. This initiative aims to develop advanced computational models that can accurately predict how various modifications to proteins and nucleic acids will appear in mass spectrometry data. By focusing on the most commonly observed PTMs, the project seeks to enhance the understanding and identification of these crucial biological processes. The simulations are designed to provide a detailed theoretical framework that complements experimental mass spectrometry, allowing researchers to better interpret complex spectral data. This work is fundamental for advancing proteomics and nucleosides research, offering new tools for analyzing the intricate molecular landscape within biological systems. The project's methodology involves creating sophisticated algorithms to model the frag...
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Oxford Brain Diagnostics Appoints Healthcare AI Executive Jieun Choe as CEO

Oxford Brain Diagnostics Appoints Healthcare AI Executive Jieun Choe as CEO

Oxford Brain Diagnostics Appoints Healthcare AI Executive Jieun Choe as CEO
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KAIST and KIOM Develop Wearable Electroceutical Platform for Remote Pain Management

KAIST and KIOM Develop Wearable Electroceutical Platform for Remote Pain Management

A joint research team from KAIST and the Korea Institute of Oriental Medicine (KIOM) has developed a wearable electroceutical platform designed for remote, wireless pain management. This innovative device, which adheres to the skin, modulates pain through electrical stimulation and can be controlled via a smartphone, even across long distances, such as between Korea and the United States. The platform integrates stable electrical stimulation, smartphone-based remote control, and automatic stimulation based on the body's physiological state. It features a temperature-responsive, conductive, and adhesive microneedle electrode that penetrates the stratum corneum, ensuring stable electrical current delivery while minimizing the impact of sweat and dead skin cells. The electrode is also coated with a conductive hydrogel for even current distribution and includes a thermal safety mechanism that causes it to detach if skin temperature rises abnormally, reducing burn risk. The system also incorporates a photopleth...
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CRISPR-Combo System Accelerates Gene-Edited Crop Regeneration, Addressing Agricultural Bottleneck

CRISPR-Combo System Accelerates Gene-Edited Crop Regeneration, Addressing Agricultural Bottleneck

Researchers from Texas A&M AgriLife Research, the University of Maryland, and the U.S. Department of Agriculture have developed a new system called CRISPR-Combo to significantly speed up the regeneration of gene-edited crops. Published in Nature Communications, this system addresses a major challenge in agricultural biotechnology: the slow and often unreliable process of growing a complete plant from gene-edited cells. CRISPR-Combo works by simultaneously editing a target gene and activating the plant's own morphogenic genes, which are responsible for cell division and development into roots, shoots, and full plants. Unlike previous methods that involved inserting additional growth-promoting genes or relying on external hormones, this new approach uses the existing CRISPR tool to enhance the activity of genes already present in the plant's genome. This method has shown promising results in various crops, including potato, citrus, strawberry, and poplar, leading to faster regeneration times and higher effic...
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Nasal Spray Derived from Human Placenta Shows Promise Against Alzheimer's Decline in Mice

Nasal Spray Derived from Human Placenta Shows Promise Against Alzheimer's Decline in Mice

A new study published in Translational Neurodegeneration indicates that a nasal spray derived from human placenta may protect against Alzheimer's disease decline. Scientists from the Catholic University of the Sacred Heart in Italy treated mice, genetically engineered to develop Alzheimer's-like features, with a nasal formulation containing extracellular vesicles (hAMSC-EVs) sourced from the placental amniotic membrane. Administered twice weekly for six months, the treatment significantly reduced amyloid-beta deposits in the hippocampus, lowered signs of neuroinflammation by reducing the activation of microglia and astrocytes, and increased levels of proteins associated with neuroplasticity. Behavioral tests showed improved cognitive performance in treated mice, including better object recognition and spatial memory, suggesting a potential counter to the neuroinflammation implicated in cognitive decline.
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MIT Neuroscientists Develop 'Sleep Syncing' Technique to Enhance Brain's Waste Clearance

MIT Neuroscientists Develop 'Sleep Syncing' Technique to Enhance Brain's Waste Clearance

Neuroscientists Laura Lewis and Joshua Levitt at the Massachusetts Institute of Technology (MIT) have developed a non-invasive technique called 'sleep syncing' to enhance the brain's natural waste-clearing mechanism during sleep. This method involves delivering precisely timed 50-millisecond pulses of pink noise, synchronized with slow-wave peaks during non-REM sleep. The auditory stimulation significantly amplifies slow electrical oscillations across the cortex. These amplified slow waves cause cerebral blood vessels to constrict and dilate with greater rhythm, effectively acting as a biological pump. This action accelerates the inflow and drainage of cerebrospinal fluid (CSF), which is crucial for flushing out toxic protein waste like amyloid-beta and lactic acid that accumulate in the brain during waking hours. The brain, lacking a conventional lymphatic system, relies on this nightly CSF flow to remove metabolic debris.
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New Single-Molecule Technique Advances Tau Protein Mapping for Alzheimer's Research

New Single-Molecule Technique Advances Tau Protein Mapping for Alzheimer's Research

Scientists have developed a new method called Iterative Mapping of proteoforms, which allows for the measurement of intact protein forms, or proteoforms, at a single-molecule level and on an unprecedented scale. This technique was specifically demonstrated on tau proteins, which are implicated in Alzheimer's disease and other neurodegenerative conditions known as tauopathies. Unlike traditional proteomics methods that break proteins into peptides, Iterative Mapping preserves the integrity of each proteoform, enabling researchers to observe individual protein molecules directly. This approach provides a detailed understanding of the chemical modifications and sequence variants that define each proteoform, which can significantly influence a protein's behavior within a cell. The method has been validated using control samples and applied to model systems in tauopathy research, as well as human-derived brain tissue samples, offering a crucial link between experimental validation and real-world translational r...
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Viva Biotech Discusses Challenges and Opportunities in Cyclic Peptide Drug Development and Manufacturing

Viva Biotech Discusses Challenges and Opportunities in Cyclic Peptide Drug Development and Manufacturing

Viva Biotech Discusses Challenges and Opportunities in Cyclic Peptide Drug Development and Manufacturing
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Scientists Identify Protein Allowing Aging Cells to Evade Immune System, Opening Avenues for Healthspan Treatments

Scientists Identify Protein Allowing Aging Cells to Evade Immune System, Opening Avenues for Healthspan Treatments

Researchers have identified a protein, PD-L2, that allows senescent cells—worn-out cells that accumulate with age and release inflammatory signals—to evade the body's immune system. This discovery, reported in a new peer-reviewed study by Cedars-Sinai, indicates that senescent human cells produce more PD-L2 than younger cells, with levels increasing in some human tissues with age. In mouse studies, genetically removing or experimentally blocking PD-L2 led to a reduction in senescent-cell accumulation and lowered inflammatory signals. These mice also showed improved health measures, including glucose processing and grip strength. This suggests that PD-L2 acts as a 'disguise,' making it harder for the immune system to eliminate these persistent, potentially harmful cells. The research is significant not as a direct anti-aging treatment for humans, but as an identification of a mechanism contributing to the persistence of unwanted senescent cells.
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Viva Biotech Advances Cyclic Peptide Drug Development with AI and Hybrid Synthesis Methods

Viva Biotech Advances Cyclic Peptide Drug Development with AI and Hybrid Synthesis Methods

Viva Biotech Advances Cyclic Peptide Drug Development with AI and Hybrid Synthesis Methods