Peer-reviewed studyPNAS
A Ganoderma lucidum polysaccharide alleviates mycoplasmal pneumonia in mice
A peer-reviewed study published in PNAS on October 20, 2026, reports laboratory experiments in mice. Oral doses of a defined polysaccharide from Ganoderma lucidum eased mycoplasmal pneumonia, and the authors report that the effect was carried by vesicles from gut microbiota that alveolar macrophages took up in the lung. The authors describe this as a gut–lung route of protection against pneumonia.
- Published
- Oct 20, 2026
DOI 10.1073/pnas.2603618123
Preprint, not peer-reviewedbioRxiv
The DDT metabolite DDE alters cell state in human breast cells in a lab study
A preprint, not yet reviewed by other scientists, published October 20, 2026, on bioRxiv, reports laboratory experiments on MCF10A breast epithelial cells grown in 3D. The study exposed the cells to p,p'-dichlorodiphenyldichloroethylene (DDE), an endocrine disruptor that the abstract links to breast cancer risk, and reports loss of two cell-state markers and an epidermal phenotype. The authors also identify the transcription factor DLX3 as induced by DDE, and say DLX3 is highly upregulated in human breast cancers.
- Published
- Oct 20, 2026
DOI 10.64898/2026.10.13.758898
Preprint, not peer-reviewedmedRxiv
Tracheal shape linked to worse outcomes in chronic obstructive pulmonary disease
A preprint, not yet reviewed by other scientists, posted on medRxiv, is an observational analysis of 8,383 participants in the multicenter COPDGene study, which spans all severities of chronic obstructive pulmonary disease (COPD). The authors report that higher tracheal eccentricity, meaning a less circular windpipe cross-section on CT scans, was associated with lower lung function, shorter walking distance, worse quality of life and higher mortality. Because the study is observational, it shows associations rather than cause, and the authors suggest central airway shape as a candidate imaging biomarker.
- Published
- Oct 20, 2026
DOI 10.64898/2026.10.14.26361560
Preprint, not peer-reviewedbioRxiv
Monocyte interactions with T cells are reduced in children with symptomatic malaria
A preprint, not yet reviewed by other scientists, posted on bioRxiv, uses single-cell RNA sequencing to study the immune landscape of chronic asymptomatic and symptomatic children infected with Plasmodium falciparum. The authors report that symptomatic infection was associated with fewer cell-cell interactions, particularly between non-classical monocytes and T cells. They also report higher S100A8 and S100A9 expression in those monocytes, and raise the possibility of a link to LILRB1 signaling.
- Published
- Oct 20, 2026
DOI 10.64898/2026.10.14.759097
Preprint, not peer-reviewedbioRxiv
Extracellular HSPB1 protects intestinal cells from ethanol-activated ferroptosis
A preprint, not yet reviewed by other scientists, posted on bioRxiv, reports cell experiments on intestinal epithelial cells exposed to ethanol. The authors report that the small heat shock protein HSPB1 is released by these cells and that extracellular HSPB1 reduced oxidative stress, damage and iron uptake during ethanol exposure. They suggest that with chronic alcohol consumption, HSPB1 released from liver cells may drive inflammation, and that targeting HSPB1 levels along the gut-liver axis could be a possible diagnostic and therapeutic avenue.
- Published
- Oct 20, 2026
DOI 10.64898/2026.10.14.759219
Preprint, not peer-reviewedmedRxiv
A meta-analysis finds shared brain gray matter reductions across several disorders
A preprint, not yet reviewed by other scientists, posted on medRxiv, is a meta-analysis of brain scan studies pooling 147 studies and 13,041 participants, comparing patients with schizophrenia, depression or alcohol use disorder with healthy controls. The authors report shared gray matter reductions in areas including the ventromedial prefrontal cortex and insula, and suggest a common brain basis, and possible treatment target, for social withdrawal and anhedonia across these disorders.
- Published
- Oct 20, 2026
DOI 10.64898/2026.10.18.26365862
Preprint, not peer-reviewedmedRxiv
AI readiness for cancer diagnostics varies widely in low- and middle-income countries
A preprint, not yet reviewed by other scientists, posted on medRxiv, is an exploratory mixed-methods pilot study: a survey, focus groups and a second survey of twelve physicians, ten from low- and middle-income countries and two from high-income countries for reference. The authors report that diagnostic and artificial intelligence (AI) capacity varied widely and did not track income level, with financial constraints the dominant barrier. They identified six implementation determinants, including AI literacy, governance frameworks, funding, evidence generation, clinical deployment and collaboration.
- Published
- Oct 20, 2026
DOI 10.64898/2026.10.19.26365881
Preprint, not peer-reviewedbioRxiv
Chondrocytes sense solid stress from the matrix they secrete in hydrogels
A preprint, not yet reviewed by other scientists, posted on bioRxiv, reports laboratory experiments on chondrocytes (cartilage cells) in 3D hydrogel scaffolds. The authors report that the nascent matrix the cells secrete builds up solid stress, which triggers an inflammatory response linked to cartilage osteoarthritis and injury. They also report that the cells divide to breach that matrix and migrate to escape the confinement.
- Published
- Oct 20, 2026
DOI 10.64898/2026.10.19.760217
Peer-reviewed studyCell
A new GPX4 inhibitor, KY0418, induces ferroptosis in vivo and suppresses tumors
A peer-reviewed study published in Cell on October 21, 2026, reports a bioavailable GPX4 (glutathione peroxidase 4) inhibitor, KY0418, that the authors say induces ferroptosis in vivo. The authors link systemic ferroptosis induction to metabolic remodeling in tissues, and report context-dependent suppression of tumor progression, including metastatic spread.
- Published
- Oct 21, 2026
DOI 10.1016/j.cell.2026.09.053
Peer-reviewed studyNature
Cold temperature activates a BH2 network that promotes longevity
A peer-reviewed study published in Nature on October 21, 2026, reports work in Caenorhabditis elegans showing that cold temperature raises dihydrobiopterin (BH2), a transportable reservoir for tetrahydrobiopterin (BH4). The authors report that BH2 made in muscle is converted to BH4 in other tissues, extending lifespan and reducing protein aggregation, and that raising BH2 synthesis in muscle alone was sufficient. In human cells, they report that BH2 or tyrosine supplementation reduced aggregation of proteins linked to Huntington's disease and amyotrophic lateral sclerosis.
- Published
- Oct 21, 2026
DOI 10.1038/s41586-026-11152-9
Preprint, not peer-reviewedmedRxiv
Blood markers predict cognitive decline in a memory clinic, a preprint reports
A preprint, not yet reviewed by other scientists, posted on medRxiv, is a longitudinal study of a memory-clinic cohort of 3,645 people, followed annually for up to three decades. It tested several blood biomarkers for Alzheimer's disease, and the authors report that p-tau217 outperformed the others at detecting clinical Alzheimer's disease and had the strongest association with cognitive decline. The authors say every marker added prognostic value beyond demographic and genetic factors.
- Published
- Oct 21, 2026
DOI 10.64898/2026.10.19.26365317
Preprint, not peer-reviewedbioRxiv
Designed protein readers detect modified tau and amyloid-beta in Alzheimer's disease
A preprint, not yet reviewed by other scientists, posted on bioRxiv, reports protein readers designed by computer to bind specific modified forms of tau and of amyloid-beta (Abeta). Screening 768 candidates identified 51 modification-selective hits, and the authors report that selected readers distinguished authentic modifications from controls and detected disease-associated signals in a human 3D neuronal culture with both amyloid-beta and tau pathology. The authors describe the readers as tools for molecular-state-resolved detection in human disease models and biological samples.
- Published
- Oct 21, 2026
DOI 10.64898/2026.10.20.760520
Preprint, not peer-reviewedbioRxiv
Rice microbiome reduces rice blast disease severity in a preprint study
A preprint, not yet reviewed by other scientists, posted on bioRxiv, reports experiments in a gnotobiotic rice system, meaning rice plants grown with a defined microbial community. The authors report that microbiome colonization significantly reduced blast disease caused by the fungal pathogen Magnaporthe oryzae, and that two synthetic communities assembled from isolates from healthy and infected plants also reduced disease. Plants without a microbiome showed higher basal defense gene expression yet more disease, which the authors read as the microbiome supporting a more regulated immune state rather than simply more defense.
- Published
- Oct 21, 2026
DOI 10.64898/2026.10.20.760547
Peer-reviewed studyPNAS
Loss of c-FLIP sensitizes cells to TNFα, triggering death and limiting viral spread
A peer-reviewed study published in PNAS on October 22, 2026, reports quantitative transcriptomics, proteomics and translation measurements during viral infections in vitro and in vivo. The authors report that infection suppresses host gene expression, and that this stress activates guard immunity only when tumor necrosis factor-α (TNFα) is present. They identify the anti-apoptotic protein c-FLIP as a guard whose loss sensitizes cells to TNFα, triggering cell death that limits viral spread.
- Published
- Oct 22, 2026
DOI 10.1073/pnas.2600336123
Peer-reviewed studyPNAS
An mRNA modification with QKI5 promotes homologous recombination DNA repair
A peer-reviewed study published in PNAS on October 22, 2026, reports that N7-methylguanosine (m7G)-modified RNA accumulates at DNA double strand breaks, where it recruits the protein QKI5. The authors report that QKI5 binds MRE11 and boosts its DNA binding, which facilitates DNA end resection and favors homologous recombination repair. They also report that higher QKI5 expression was associated with resistance to radiotherapy in mouse models and clinical cohorts, and suggest QKI5 as a promising therapeutic target in cancer treatment.
- Published
- Oct 22, 2026
DOI 10.1073/pnas.2611667123
Preprint, not peer-reviewedbioRxiv
A mechanistic model links threat signals to breathing in anxiety and depression
A preprint, not yet reviewed by other scientists, posted on bioRxiv, presents a mechanistic model of how the brain's threat response sets breathing rate and depth, and how breathing recovers after stress. The authors report that breathing rate rose from 18 to 28 and 31 breaths per minute from normal to moderate to severe threat, and that the model's circuit followed breathing closely. They compared the model with chest-belt recordings from 15 adults in the Wearable Stress and Affect Detection (WESAD) study, and report that breathing rose during a spoken stress task and then returned to rest, as the model predicts for healthy people.
- Published
- Oct 22, 2026
DOI 10.64898/2026.10.16.759543
Preprint, not peer-reviewedbioRxiv
Macrophage oxysterol may heighten statin-linked kidney injury in mice
A preprint, not yet reviewed by other scientists, posted on bioRxiv, reports that 25-hydroxycholesterol (25-HC), an oxysterol made by activated macrophages and monocytes, combined with atorvastatin or fluvastatin induced cell death in kidney proximal tubular cells in the lab. The authors report that low-dose lipopolysaccharide triggered acute kidney injury (AKI) in statin-treated mice, and that mevalonate supplementation attenuated it. They suggest that infection, inflammation or major surgery may raise 25-HC and increase susceptibility to statin-induced kidney injury.
- Published
- Oct 22, 2026
DOI 10.64898/2026.10.16.759612
Preprint, not peer-reviewedbioRxiv
Insulin signaling defects appear before tau pathology in transgenic mice
A preprint, not yet reviewed by other scientists, posted on bioRxiv, reports experiments in PS19 tau transgenic mice and in stable tau-expressing human neuronal cell lines. The authors report that changes in insulin signaling proteins and in the glucose transporters GLUT3 and GLUT4 occur before pathogenic tau deposition, and that oxidative stress kinases and raised microglial abundance were evident in mice at 2 months of age and persisted into adulthood. They describe these as early and sustained features that precede overt neuropathology.
- Published
- Oct 22, 2026
DOI 10.64898/2026.10.16.759692
Preprint, not peer-reviewedbioRxiv
An ACOD1 inhibitor eases colitis and tumor growth, unlike genetic deletion
A preprint, not yet reviewed by other scientists, posted on bioRxiv, reports experiments in mice with ERG344, a small-molecule inhibitor of aconitate decarboxylase 1 (ACOD1), the enzyme that makes the immunometabolite itaconate. The authors report that ERG344 attenuated acute colitis in an ACOD1-dependent way, in contrast to earlier genetic-deletion studies, and prolonged survival in syngeneic tumor models. They describe ACOD1 as marking immature monocytes and maturing neutrophils, and suggest a shared myeloid recruitment and maturation mechanism.
- Published
- Oct 22, 2026
DOI 10.64898/2026.10.17.759827
Preprint, not peer-reviewedmedRxiv
A model using viral load data better reconstructs household transmission chains
A preprint, not yet reviewed by other scientists, posted on medRxiv, is a modelling study using simulated household outbreaks rather than observed people. It compares three observation designs, based on symptom onset, qualitative polymerase chain reaction (PCR) testing, or quantitative viral load sampling. The authors report that viral load data reconstructed transmission chains at 87–93% across transmission-probability settings, against 46–57% for symptom onset and 68–78% for qualitative PCR, and captured individual variation that simpler designs missed.
- Published
- Oct 22, 2026
DOI 10.64898/2026.10.18.26364899
Preprint, not peer-reviewedmedRxiv
Self-rated health gaps across European Union countries follow a shared social pattern
A preprint, not yet reviewed by other scientists, posted on medRxiv, analyzes 171,193 people aged 15 years or over in 24 European Union (EU) countries across five rounds of the European Social Survey (2014 to 2023). Using Simple-Means MAIHDA (a multilevel analysis of individual heterogeneity and discriminatory accuracy), the authors report poor or very poor self-rated health at 7.7% overall, from 3.8% in Greece to 15.0% in Latvia. They say the sociodemographic pattern of poor health, defined by sex, age and household financial situation, is largely shared across countries, and recommend the method for monitoring health inequalities in Europe.
- Published
- Oct 22, 2026
DOI 10.64898/2026.10.20.26366006
Preprint, not peer-reviewedmedRxiv
Pain and anxiety or depression are associated over time in young people
A preprint, not yet reviewed by other scientists, posted on medRxiv, is a systematic review and meta-analysis of forty-two studies from 31 longitudinal cohorts of people aged 0 to 24 years. The authors report that anxiety, depression and their combination were associated with later pain, but after adjustment for confounders only depression remained so. Pain was associated with later anxiety and depression before and after adjustment, and certainty of evidence was rated very low to moderate for most outcomes and high for two.
- Published
- Oct 22, 2026
DOI 10.64898/2026.10.20.26366024
Preprint, not peer-reviewedbioRxiv
De novo macrocyclic peptides bind the CXCR4 receptor and block its signaling
A preprint, not yet reviewed by other scientists, posted on bioRxiv, reports macrocyclic peptides discovered by a screening method called random nonstandard peptides integrated discovery (RaPID) that bind CXCR4, a chemokine receptor and class A G protein-coupled receptor (GPCR). The authors report nanomolar-affinity CXCR4-selective antagonists that inhibited receptor signaling and suppressed chemokine-driven cell migration in laboratory tests. They also report that the most active peptides blocked CXCR4-driven entry of human immunodeficiency virus (HIV) into cells.
- Published
- Oct 22, 2026
DOI 10.64898/2026.10.21.760615
Peer-reviewed studyCell
Perforin triggers iron-driven ferroptosis that supports anti-tumor immunity
A peer-reviewed study published in Cell on October 23, 2026, reports that perforin, known for delivering granzymes into tumor cells, has a second, granzyme-independent killing function. The authors report that perforin drives iron uptake and mitochondrial iron overload that trigger ferroptosis, and that this pathway predicts patient response to checkpoint blockade. They point to iron supplementation as a possible lever for boosting anti-tumor immunity.
- Published
- Oct 23, 2026
DOI 10.1016/j.cell.2026.09.062
Preprint, not peer-reviewedbioRxiv
A preprint reports CD160 as an endothelial checkpoint limiting sprouting angiogenesis
A preprint, not yet reviewed by other scientists, posted on bioRxiv, reports laboratory experiments on endothelial cells and ex vivo mouse aortic rings. The authors report that CD160, a receptor absent from resting endothelium, is induced by pro-angiogenic signals, and that an antibody against it reduced tubulogenesis and sprouting. They say CD160 associates with the receptor LRP1 and that silencing either receptor abolished the antibody's anti-angiogenic effect.
- Published
- Oct 23, 2026
DOI 10.64898/2026.10.19.760050
Preprint, not peer-reviewedbioRxiv
NAD metabolism mediates sex-specific protection against early-life infections
A preprint, not yet reviewed by other scientists, posted on bioRxiv, reports two cohorts of children and experiments in infected newborn piglets, which the authors use as a model of infection-sensitive infants. The authors report that higher birth levels of nicotinamide adenine dinucleotide (NAD) were associated with fewer infections during the first 3 years of life in females, while males showed a tendency toward more infections. Nicotinamide riboside (NR), a NAD precursor, improved survival and bacterial clearance in infected female piglets but not male piglets, and the authors suggest sex-stratified nutritional interventions could be relevant.
- Published
- Oct 23, 2026
DOI 10.64898/2026.10.19.760092
Preprint, not peer-reviewedmedRxiv
Higher cardiovascular-kidney-metabolic burden tracks worse heart outcomes in hypertension
A preprint, not yet reviewed by other scientists, posted on medRxiv, analyzes 1,600 patients with hypertension from the STRATS-HHD registry who had echocardiography at baseline and 6-18 months after treatment. The authors report that a higher count of cardiovascular-kidney-metabolic components (obesity, diabetes, chronic kidney disease and severe hypertension) was associated with higher risk of cardiovascular death or heart failure hospitalization. Patients with 3 or more components had less favorable heart function at follow-up, and the authors say heart measures partly explained the link.
- Published
- Oct 23, 2026
DOI 10.64898/2026.10.21.26366110
Preprint, not peer-reviewedmedRxiv
ECG-derived heart mechanics predict mortality after myocardial infarction
A preprint, not yet reviewed by other scientists, posted on medRxiv, estimates left ventricular mechanical measures from standard 12-lead electrocardiograms (ECGs), using a generative adversarial network that the authors say was applied without retraining. The authors report that these estimates predicted all-cause mortality after acute myocardial infarction, and that in the general population they predicted mortality from myocardial infarction itself. They say the measures added information beyond the GRACE score and measured ejection fraction, and one measure remained an independent predictor after adjustment.
- Published
- Oct 24, 2026
DOI 10.64898/2026.10.21.26366159
Preprint, not peer-reviewedbioRxiv
Human macrophages have CYP3A4 activity, which cocaine increased in lab tests
A preprint, not yet reviewed by other scientists, posted on bioRxiv, reports lab work on primary human monocyte-derived macrophages from 100 donors. The authors report that the drug-metabolizing enzyme CYP3A4 was active in these cells, although its mRNA, protein levels and activity did not track one another. Cocaine increased CYP3A4 activity in all donors, reaching or exceeding levels induced by rifampicin, and in rhesus macaques it was associated with lower antiretroviral drug concentrations in tissue.
- Published
- Oct 25, 2026
DOI 10.64898/2026.10.21.760694