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MIT researchers develop noninvasive way to spot aging zombie cells

As we age, some of the cells in our body enter a state of senescence, in which they stop dividing but do not die. Those senescent cells can contribute to age-related disorders such as cancer, tissue degeneration, and inflammatory diseases.

In an advance that could lead to better ways to diagnose and treat those diseases, MIT researchers have developed a noninvasive way to detect biomarkers of senescence. Their method is based on Raman microscopy, which can reveal the biochemical composition of cells without harming them.

By combining Raman microscopy with gene expression data at single-cell resolution from the same cells, the researchers were able to identify unique “barcodes” that can be used to quickly identify senescent cells. This study was done in mouse cells, but the researchers are now working on adapting it for use with human tissue.

Physicists just found a tiny glitch in time itself

Quantum physics may place a fundamental limit on clock precision, hinting that time itself is not perfectly precise. Unconventional quantum theories may imply that time itself has a tiny fundamental uncertainty, placing an ultimate limit on how precisely any clock could measure it. The effect is far beyond current detection, but it could reveal a hidden connection between quantum mechanics, gravity, and spacetime.

Quantum mechanics has always challenged our everyday understanding of reality. In the quantum world, particles can exist in a superposition of states, meaning they can occupy multiple possible positions or configurations at the same time. Physicists describe these possibilities mathematically using a wavefunction.

That picture is very different from ordinary life, where an object appears to be in one place and one state at a time. To bridge that gap, standard quantum mechanics says that when a quantum system is measured or observed, its wavefunction collapses into a single definite outcome.

Caffeine may flip an ancient cellular switch linked to slower aging

Caffeine may help cells age more slowly by switching on a powerful energy and stress-response system. Scientists found that caffeine activates an ancient cellular energy system involved in stress resistance, DNA repair, and growth. The discovery could help explain caffeine’s links to healthier aging and may point toward new ways to target the same pathway.

Your morning coffee may be doing more than helping you wake up.

Research from Queen Mary University of London suggests that caffeine can activate an ancient cellular energy system involved in growth, stress resistance, and DNA repair. Those processes are closely tied to aging, which could help explain why caffeine has been linked to potential health benefits in earlier studies.

Cognitive Decline, Neurologic Involvement, and Neonatal Crisis in ABCC9-Related Intellectual Disability and Myopathy Syndrome

Background and ObjectivesThe ABCC9 gene encodes the widely expressed SUR2 subunit of ATP-sensitive potassium (KATP) channels. Autosomal recessive loss-of-function variants in ABCC9 cause ABCC9-related Intellectual disability and Myopathy Syndrome (AIMS)…

Lipid nanoparticles for mRNA delivery in brain via systemic administration

Cao et al. made lipid nanoparticles (LNPs) equipped with a small molecule ligand for blood-brain-barrier (BBB) 5-HT3 receptor and a cell penetrating peptide known as Tat. These LNPs crossed the BBB in mice more efficiently than control formulations.

Peptide-modified lipid nanoparticles enable systemic IL-12 mRNA delivery for glioblastoma treatment.

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