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RNA polymerase II (RNAPII) is typically considered as an essential enzyme. Here the authors show that natural degradation of RNAPII drives chromatin reorganization in growing oocytes, preparing the chromatin for genome activation after fertilization.

Native top-down proteomics reveals epidermal growth factor receptor–estrogen receptor-alpha (EGFR–ER) signaling crosstalk in breast cancer cells and dissociation of nuclear transport factor 2 (NUTF2) dimers to modulate ER signaling and cell growth.

Here, the authors show that 2’-O-methylated RNA fragments from ribosomal RNA naturally block TLR7 and TLR8, helping to avoid avoid harmful self-RNA detection and autoimmunity.

ATF6α activation in human and preclinical models of hepatocellular carcinoma is significantly associated with an aggressive tumour phenotype characterized by reduced survival, glycolytic reprogramming and local immunosuppression.

Viral ribonucleoprotein–viral protein networks form pre-replication centres that nucleate viral factories and drive respiratory syncytial virus replication.

Taniuchi and colleagues show that differential phosphorylation of the terminal Y residue in Runx proteins connect MHC restriction with the helper versus cytotoxic T cell lineage choice.

Mucosal administration of a multivalent, adjuvanted vaccine against Clostridioides difficile promoted bacterial clearance and protected against morbidity, mortality, tissue damage and recurrence in mice.

Crohn’s disease is associated with disturbances in the B-cell compartment and secreted antibodies. Here, the authors reveal impaired colonic dimeric IgA responses in patients with Crohn’s disease and verify this phenotype in murine models, demonstrating that mitochondrial dysfunction drives defective mucosal humoral immunity.

Functional studies of O-GlcNAcylation have often focused on individual modifications. Now, a systems-level approach has identified simultaneous O-GlcNAcylation events that coordinate cellular activities and tissue-specific functions.

This study reports a post-assembly, reversible crosslinking strategy that enhances lipid nanoparticle (LNP)-mediated mRNA delivery while preserving efficient intracellular release. The resulting crosslinked LNPs enable improved endosomal escape, sustained in vivo expression and robust immune and antitumor responses across multiple clinically relevant LNP platforms.

Microscopic imaging and biochemical studies show that sinuses in mouse and human form a highly dynamic surface that regulates fluid movement and immune cell surveillance via RAMP1-dependent regulation of smooth muscle contraction and RAMP2-dependent regulation of the sinus endothelial barrier.

Self-DNA has been implicated in the activation of cGAS/STING/IFN-I responses in autoimmunity and inflammatory diseases. Here the authors show that macrophage uses a process termed ‘nucleocytosis’ to extract nuclear DNA from lysosome-impaired, dying target cells, thereby activating downstream cGAS-STING signaling and IFN-I production.

Neuroinflammation triggers DNA damage and subsequent parthanatos-mediated neuron death. Inhibiting parthanatos in a mouse model of autoimmune inflammation is neuroprotective and reduces disease-associated paralysis.

A spatial and single-cell transcriptomics study across multiple mammalian species identifies epidermal BMP signalling as a functional requirement for rete ridge formation, providing insight into mechanisms underlying hair density loss and wound healing.

Bång-Rudenstam et al. report that the acidic tumour microenvironment facilitates the assembly of chondroitin sulfate-enriched glycocalyx to disrupt lipid scavenging and prevent ferroptosis, thereby providing an adaptive mechanism upon tumour acidosis.

An anti-HIV-1 antibody that targets an N332_gp120 glycan-independent V3 epitope, a site of Env vulnerability, can decline viremia in HIV-1-infected humanized mice while overcoming classical V3 escape mutations.

Proteomic data from natural isolates of Saccharomyces cerevisiae provide insight into how these cells tolerate aneuploidy (an imbalance in the number of chromosomes), and reveal differences between lab-engineered aneuploids and diverse natural yeasts.

Here the authors compare genetic testing strategies in rare movement disorders, improve diagnostic yield with genome analysis, and establish CD99L2 as an X-linked spastic ataxia gene, showing that CD99L2–CAPN1 signaling disruption likely drives neurodegeneration.

Heparan sulfate proteoglycans facilitate the assembly of clusters of glycoRNAs and cell surface RNA-binding proteins, which negatively modulate VEGF-A signalling and angiogenesis.

In this study, the authors present optimization and efficacy testing of apolipoprotein-based lipid nanoparticles for delivering various nucleic acid therapeutics in vivo to immune cells and their progenitors in the bone marrow.

Interactions between long RNA molecules play essential roles in shaping gene regulation. Here, the authors show that low-complexity repeats drive stable contacts between RNAs and present RIME, a deep learning model that improves the prediction of these interactions using sequence information.

Boosting mitochondrial metabolism in neurons in central memory circuits by enhancing Ca²⁺ retention in the mitochondrial matrix is shown to improve long-term memory formation in flies and mice.

The authors find that distinct radial glia subtypes generate and support midbrain dopaminergic neurons, revealing specialized function and lineage relationships among the diverse cell types that shape dopamine neuron development.

Wei et al. perform spatial transcriptomic profiling on synovial tissue biopsy samples from individuals with recent-onset rheumatoid arthritis, finding TGFβ signaling and fibrogenic fibroblast activation drive a treatment-refractory tissue phenotype.

Seasonal metabolomics revealed that taurine increases during low malaria transmission and is linked to asymptomatic Plasmodium falciparum infection.

Japonica subspecies has a lower nitrogen use efficiency (NUE) than that of indica rice. Here, the authors show that natural variations in the NIN-like protein 4 (OsNLP4) encoding gene are responsible for the divergence and introgression of the indica OsNLP4 allele into elite japonica cultivar can increase NUE and grain yield.

Newly developed mouse models that enable cell-specific analyses of proteostasis dynamics across the lifespan of the mice reveal key aspects of neuronal proteostasis with ageing.

The specific glycosylation patterns of biological drugs often impact the efficacy and safety of the therapeutic product. Here the authors describe a native mass spectrometry approach that allows the resolution of highly complex glycosylation patterns on large proteins, which they apply to the therapeutic Fc-fusion protein Etanercept.

The ZFTA–RELA fusion, an oncogene for ependymomas, promotes the production of itaconate, and its dependence on this metabolite represents a new therapeutic target for this cancer.

The xylosyltransferase isoenzymes XT1 and XT2 catalyze the first glycosylation step in the biosynthesis of proteoglycans. Now, bump-and-hole engineering of XT1 and XT2 enables substrate profiling and modification of proteins as designer proteoglycans to modulate cellular behavior.

I-motifs are non-canonical secondary DNA structures that form dynamically in certain C-rich DNA regions. Here, the authors show that PCBP1 binds and unfolds i-motifs in a protonation- and structure-dependent manner, controlling their formation during the cell cycle to maintain genomic stability.

T-cell–mediated rejection (TCMR) remains a major cause of kidney transplant failure with incompletely understood mechanisms. Here the authors use single-nucleus RNA sequencing, spatial transcriptomics and immunofluorescence to show that injured kidney epithelial cell states associate with poor transplant outcomes after T-cell–mediated rejection.

Authors study links between amyloid secondary nucleation and growth defects, demonstrating these sites on Aβ40/Aβ42 fibrils are rare compared to the number of protein molecules. Re-analysis of published data suggests that defects may also drive secondary nucleation generally.

Taveneau et al. leverage artificial-intelligence-driven protein design to create inhibitors that control RNA-targeting enzymes in cells, revealing a strategy to rapidly design off-switches for RNA-editing systems.

Crystalline materials for optical applications are synthesized in living dinoflagellates.

Population-level analyses and in vitro experiments show that a specific genetic variant of cyclin D3 inhibits the growth of the malaria-causing parasite Plasmodium falciparum in erythrocytes, and suggest that its high frequency in Sardinia was driven by past endemic malaria.

Single-particle tracking experiments in intact cells reveal dynamic co- and post-translational interactions of the TRiC–PFD chaperonin complex with client proteins during in vivo protein folding.

Analysis of the somatic and transcriptomic profile of 123 acral melanoma samples from Mexican patients helps understand tumour origins and prognosis, and highlights the importance of including samples from diverse ancestries in cancer genomics studies.

The role of normally silenced transposable elements (TEs) in tumorigenesis remains unclear. Here, the authors show that increased expression of TEs in both patients and mice with colitis or by DNA hypomethylating drugs elicits a viral mimicry response that suppresses tumorigenesis. This viral mimicry response inhibits the stemness of cancer initiating cells in a cell autonomous manner.

Annunziato, Quan and Donckele et al. identify G3BP2 (Ras–GAP SH3 domain-binding protein 2) as a molecular glue-induced neosubstrate of the CRL4^CRBN E3 ubiquitin ligase. The CRBN–glue neosurface uses a molecular surface mimicry mechanism to recruit and degrade G3BP2 in a compound-dependent manner.

Cytosolic ScURA uncouples de novo pyrimidine synthesis from mitochondrial electron transport, and rescues pyrimidine production and cell proliferation under pharmacological or genetic mETC disruption.

Hexokinase detachment from the outer mitochondrial membrane is shown to support aerobic glycolysis in cancer cells. Differential localization of the HK1 isoform to the outer mitochondrial membrane, compared to the HK2 isoform, explains the conditional essentiality of HK2 in cancer cells cultured in physiologic media.

APOBEC deaminases restrict retroviruses but can also mutate human DNA. Here, the authors show that cancerassociated APOBEC3s with low RNA binding, known to enter the nucleus, are selectively recognized by E3 ligases and degraded, eliminating harmful nuclear enzymes, and limiting genome mutation.

Population-scale WGS reveals genetic determinants of persistent EBV DNA, linking immune regulation—especially antigen processing and MHC class II variation—to EBV persistence and heterogeneous disease associations.

Using two newly developed immunoassays tested in three clinical cohorts, this study highlights CSF DOPA decarboxylase as a promising biomarker for differentiating dementia with Lewy bodies and Parkinson’s disease from Alzheimer’s disease and controls.

Here the authors show that PARP inhibition activates SIRT-1–FOXO1 signaling to drive transcriptional and metabolic reprogramming of CD8⁺ T cells into central memory T cells with superior recall capacity and efficacy in adoptive therapy.

Cancer immunotherapy benefits from antibody-lectin chimeras that block glyco-immune checkpoints.