Research news on Subcellular structures

Subcellular structures are distinct, spatially organized physical systems within cells, encompassing membrane-bound organelles (e.g., mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes), non-membranous bodies (e.g., ribosomes, cytoskeleton, centrosomes), and specialized compartments (e.g., nucleolus, stress granules). They are defined by specific molecular compositions, biophysical properties, and emergent functions such as energy transduction, macromolecular synthesis, intracellular trafficking, signal transduction, and mechanical support. As physical systems, they exhibit dynamic self-assembly, phase separation, and regulated turnover, and their organization is governed by principles of thermodynamics, molecular crowding, and active processes driven by nucleotide hydrolysis and cytoskeletal forces.

How Argonaute, a key protein for RNA therapeutics, becomes activated

RNA therapeutics have emerged as one of the most promising new classes of medicines. Eight small interfering RNA (siRNA) drugs have already been approved worldwide for the treatment of genetic diseases, yet scientists have ...

Novel synthetic biomolecule degrades disease-related proteins

Northwestern Medicine scientists have developed a novel synthetic biomolecular condensate that can degrade intracellular disease-causing proteins, providing a framework for new therapeutic approaches for a wide range of diseases, ...

Overlooked DNA structures help organize the genome

Northwestern Medicine scientists have discovered that little-studied DNA structures play a central role in organizing the human genome and controlling gene activity, according to a new study published in the Proceedings of ...

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