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Category: biotech/medical – Page 53

EpInflammAge: Epigenetic-Inflammatory Clock for Disease-Associated Biological Aging Based on Deep Learning

We present EpInflammAge, an explainable deep learning tool that integrates epigenetic and inflammatory markers to create a highly accurate, disease-sensitive biological age predictor. This novel approach bridges two key hallmarks of aging—epigenetic alterations and immunosenescence. First, epigenetic and inflammatory data from the same participants was used for AI models predicting levels of 24 cytokines from blood DNA methylation. Second, open-source epigenetic data (25 thousand samples) was used for generating synthetic inflammatory biomarkers and training an age estimation model. Using state-of-the-art deep neural networks optimized for tabular data analysis, EpInflammAge achieves competitive performance metrics against 34 epigenetic clock models, including an overall mean absolute error of 7 years and a Pearson correlation coefficient of 0.85 in healthy controls, while demonstrating robust sensitivity across multiple disease categories. Explainable AI revealed the contribution of each feature to the age prediction. The sensitivity to multiple diseases due to combining inflammatory and epigenetic profiles is promising for both research and clinical applications. EpInflammAge is released as an easy-to-use web tool that generates the age estimates and levels of inflammatory parameters for methylation data, with the detailed report on the contribution of input variables to the model output for each sample.

Respiratory Viruses Can Wake Up Breast Cancer Cells in Lungs

Researchers at the University of Colorado Anschutz Medical Campus, Montefiore Einstein Comprehensive Cancer Center (MECCC), and Utrecht University have found the first direct evidence that common respiratory infections, including COVID-19 and influenza, can awaken dormant breast cancer cells that have spread to the lungs, setting the stage for new metastatic tumors. The findings published today in Nature, obtained in mice, were supported by research showing increases in death and in metastatic lung disease among cancer survivors infected with SARS-CoV-2, the virus that causes COVID-19.

Programmable nanospheres unlock nature’s 500-million-year-old color secrets

Half a billion years ago, nature evolved a remarkable trick: generating vibrant, shimmering colors via intricate, microscopic structures in feathers, wings and shells that reflect light in precise ways. Now, researchers from Trinity have taken a major step forward in harnessing it for advanced materials science.

A team led by Professor Colm Delaney from Trinity’s School of Chemistry and AMBER, the Research Ireland Center for Advanced Materials and BioEngineering Research, has developed a pioneering method, inspired by nature, to create and program structural colors using a cutting-edge microfabrication technique.

The work could have major implications for environmental sensing, biomedical diagnostics, and photonic materials. The research is published in the journal Advanced Materials.

Columbia scientists turn yogurt into a healing gel that mimics human tissue

Scientists at Columbia Engineering have developed an injectable hydrogel made from yogurt-derived extracellular vesicles (EVs) that could revolutionize regenerative medicine. These EVs serve both as healing agents and as structural components, eliminating the need for added chemicals. The innovation leverages everyday dairy products like yogurt to create a biocompatible material that mimics natural tissue and enhances healing.

RNA-seq outperforms DNA methods in detecting actionable cancer mutations

Hospital for Sick Children in Toronto researchers are reporting that targeted RNA sequencing can detect clinically actionable alterations in 87% of tumors and provide decisive findings where DNA-seq either fails, returns no variant, or is not informative.

Cancer treatments have seen tremendous improvements in recent years, in part due to highly specific targeting and .

DNA-based methods dominate molecular cancer diagnostics but struggle to detect and assess splice site consequences. RNA sequencing enables sensitive fusion detection and direct assessment of transcript-level disruption caused by splicing mutations.

Scientists grow novel ‘whole-brain’ organoid

Johns Hopkins University researchers have grown a novel whole-brain organoid, complete with neural tissues and rudimentary blood vessels—an advance that could usher in a new era of research into neuropsychiatric disorders such as autism.

“We’ve made the next generation of ,” said senior author Annie Kathuria, an assistant professor in JHU’s Department of Biomedical Engineering who studies and neuropsychiatric disorders. “Most brain organoids that you see in papers are one brain region, like the cortex or the hindbrain or midbrain. We’ve grown a rudimentary whole-brain organoid; we call it the multi-region brain organoid (MRBO).”

The research, published in Advanced Science, marks one of the first times scientists have been able to generate an organoid with tissues from each region of the brain connected and acting in concert. Having a human cell-based model of the brain will open possibilities for studying schizophrenia, autism, and other that affect the whole brain—work that typically is conducted in animal models.

Study finds cancer cells boost energy to survive mechanical stress and DNA damage

Cancer cells mount an instant, energy‑rich response to being physically squeezed, according to a study published in the journal Nature Communications. The surge of energy is the first reported instance of a defensive mechanism that helps cells repair DNA damage and survive the crowded environments of the human body.

The findings help explain how cancer cells survive complex mechanical gauntlets like crawling through a , sliding into porous blood vessels or enduring the battering of the bloodstream. The discovery of the mechanism can lead to new strategies that pin cancer cells down before they spread.

Researchers at the Center for Genomic Regulation (CRG) in Barcelona made the discovery using a specialized microscope that can compress living cells to just three microns wide, about one‑thirtieth the diameter of a human hair. They observed that within seconds of being squeezed, mitochondria in HeLA cells race to the surface of the nucleus and pump in extra ATP, the molecular energy source of cells.

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