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TgmRHel drives unified RNA processing of coxI mRNA generated from a complex mitochondrial genomic context
The mitochondrial genome of Toxoplasma gondii is highly fragmented and recombination-prone, creating a structurally dynamic genetic landscape. How such a genome is used efficiently to produce functional mRNAs remains unclear: it is unknown whether transcription draws from many alternative genomic configurations or a restricted subset, and how any resulting precursor RNAs are processed into mature transcripts. More broadly, mitochondrial RNA processing mechanisms in this system are poorly...
mRNAutilus: Multi-Objective-Guided Discrete Generation of mRNA with Optimized Therapeutic Properties
arXiv:2605.31296v1 Announce Type: cross Abstract: Therapeutic mRNA design requires coordinating multiple interacting sequence features across the full transcript, where codon usage, untranslated regions (UTRs), and their coupling jointly determine stability, translation efficiency, and protein expression. Here, we present mRNA generation via unrolled trajectories and informed latent updates (mRNAutilus), a framework for simultaneous codon optimization and de novo UTR design directly from...
Scientists uncover RNA's hidden role as protein chaperone
Scientists uncover RNA's hidden role as protein chaperone Gaby Clark Scientific Editor Andrew Zinin Lead Editor Proteins are how cells get work done. They carry out nearly every important cellular task, from ferrying messages to controlling which genes are turned on or off. And in order for proteins to perform their various roles, the strings of amino acids that make them up need to be folded into the correct shape.
DNMT mRNA stability and YB-1 cooperatively regulate ABCB1 to drive cisplatin chemoresistance in cholangiocarcinoma
Background and Aims: Intrahepatic cholangiocarcinoma (iCCA) is a tumor type with a high lethality due to late diagnosis and profound resistance to conventional chemotherapy. To date the molecular mechanisms underlying multidrug resistance remain poorly defined. Here, we integrate single-cell transcriptomics, clinicopathological analysis, and functional genomics to elucidate the molecular basis of cisplatin resistance in iCCA.
Role of transposons in the specialization of Botrytis cinerea to grapevine: Insights into small RNAs and a new Starship
While transposable elements (TEs) are recognized as major drivers of fungal genome structure, evidence of their direct involvement in the interaction with host plants and the environment is only beginning to emerge. Retrotransposons can generate small RNA (sRNA) that act through cross-kingdom RNA interference, while giant DNA TEs called Starships carry dozens of cargo genes that enrich the accessory gene compartment of fungal genomes. In the polyphagous pathogen Botrytis cinerea, the Vv3...
Tumor extracellular vesicle RNA profiling predicts treatment response in pediatric diffuse midline glioma
Detection of reliable markers of therapy response and drug resistance remains a major unmet need in brain cancer, as serial tumor biopsy is often not feasible. This challenge is particularly acute in diffuse midline glioma (DMG), a fatal pediatric brain tumor for which new targeted therapies are entering clinical use, yet tools for real-time molecular analysis of tumor evolution during therapy remain lacking. Here, we demonstrate that plasma tumor-derived extracellular vesicle (EV) profiling...