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Spatial transcriptomic analysis of progressing oral epithelial dysplasia reveals unique differentially expressed genes and microenvironmental changes

16 hours 1 minute ago
Oral squamous cell carcinoma (OSCC) often arises from oral epithelial dysplasia (OED); however, the gene expression changes during OED progression and its microenvironment are not fully understood. This study used spatial transcriptomics to identify differentially expressed genes and microenvironmental alterations associated with malignant transformation of OED. A retrospective analysis of paired OSCC and OED samples was conducted at the Faculty of Dentistry, University of Toronto. A total of 24...
Vincent Lavoie

Pumilio and Brain tumor regulate the expression of Smaug during the Drosophila maternal-to-zygotic transition

16 hours 1 minute ago
During the Drosophila maternal-to-zygotic transition, maternally deposited RNAs are cleared in a temporally controlled manner. The RNA-binding protein Smaug is a major regulator of maternal mRNA decay and its expression at both the RNA and protein level is limited to a narrow temporal window during the MZT. Here we show that the Pumilio RNA-binding protein promotes degradation of smaug mRNA at the end of the MZT through Pumilio-binding cis-elements in the smaug 3´ untranslated region, and that...
Alexander J Marsolais

Accelerating equitable cancer genomics and precision oncology in health care and research: a Lancet Oncology Commission

4 days 16 hours ago
Cancer genomics and precision oncology are increasingly central to cancer care, but many health systems struggle to implement them equitably, effectively, and sustainably. This Commission defines the current global precision oncology landscape and analyses the scientific, structural, and health-system challenges shaping its delivery and impact. Findings indicate that access to cancer genomics and precision oncology remains profoundly unequal across and within countries, leaving millions of...
Raffaella Casolino

Cancer genomic data systems in precision oncology: from integration to clinical implementation

4 days 16 hours ago
Cancer genomic data sharing is a core pillar of precision oncology, underpinning reproducibility, scalability, and equity. The ability to discover, access, integrate, interpret, and reuse cancer 'omics data is a key determinant of precision oncology's value and benefit at scale. This work has been conducted as part of The Lancet Oncology Commission on Cancer Genomics and Precision Oncology to examine the practical data architecture required to support cancer genomics in research, clinical care,...
David Torrents

The spectrum of copy number variation in the Pan-Canadian HostSeq databank

4 days 16 hours ago
The integration of copy number variant (CNV) workflows into genome sequencing (GS) analysis pipelines allows for the identification of CNVs implicated in disease. Here, we generated a novel resource of CNVs identified in the HostSeq population cohort from Canada, identified the prevalence of recurrent CNVs associated with neurodevelopmental disorders, and determined CNVs of potential clinical relevance for reproductive planning and personal disease risk. GS data and CNV calls were generated for...
Navneet Aujla

Measurements of Z-Boson Pair Entanglement in Decays of Higgs Bosons at the ATLAS Experiment

4 days 16 hours ago
Entanglement is a key property of quantum systems. In this Letter the first measurements of quantum entanglement between spins in pairs of Z bosons are reported, using proton-proton collision data from the Large Hadron Collider (LHC) at center-of-mass energies of 13 and 13.6 TeV, recorded with the ATLAS detector. Measurements of angular observables sensitive to ZZ^{*} spin-density-matrix elements in the H→ZZ^{*}→ℓ^{+}ℓ^{-}ℓ^{+}ℓ^{-} process yield coefficients C_{2,1,2,-1}=-0.71±0.45 and...
G Aad

Method for assessing inter-individual variability in the carbohydrate utilization potential of gut microbiota ex vivo

4 days 16 hours ago
The microbial utilization of carbohydrates produces metabolic byproducts that are associated with health benefits, such as short-chain fatty acids (SCFAs). The rapid absorption of SCFAs by intestinal epithelial cells makes them challenging to study in vivo. Culturing methods address this limitation by providing controlled conditions that allow for monitoring substrate utilization and the production of fermentation byproducts. In this paper, we describe an easily implemented, cost-effective...
Rachel E Asbury

FAIDR-Desi: interactive software for feature analysis and design of intrinsically disordered regions

4 days 16 hours ago
SUMMARY: FAIDR-Desi is a non-technical user interface for design of intrinsically disordered regions (IDRs) based on greedy optimization of sequence features (simple sequence statistics correlated with IDR function, including amino acid composition, residue patterning and short linear interaction motifs), using more features (127) than other IDR design approaches. FAIDR-Desi can be used to design synthetic IDR mimics to establish feature sufficiency for function, or to knock out features to show...
Tian Hao Huang

Cortical myoclonus as a common and clinically actionable movement disorder phenotype of 22q11.2 deletion syndrome

6 days 16 hours ago
CONCLUSIONS: The findings support cortical myoclonus as a relatively common and clinically actionable movement disorder in 22q11.2DS. As for Parkinson's disease, the results provide preliminary evidence supporting the chromosome 22q11.2 microdeletion as a potential risk-conferring CNV for cortical myoclonus, adding to the genetic heterogeneity associated with this movement disorder.
Nikolai Gil D Reyes

Posterior fossa ependymoma: a comprehensive review of molecular classification, management guidelines, and clinical outcomes (Part I of ependymomas across compartments)

1 week ago
CONCLUSIONS: PF ependymoma comprises two biologically and clinically distinct entities. Maximal safe resection and focal radiotherapy remain the backbone of treatment, but integrating molecular subgrouping, imaging biomarkers, and modern radiotherapeutic techniques into surgical and adjuvant planning offers the clearest path to improved outcomes, particularly for high-risk PFA tumors.
George W Koutsouras

Genetic data sharing by clinical laboratories in Canada: A position statement by the Canadian College of Medical Geneticists

1 week ago
Next-generation sequencing has transformed diagnosis, prognosis, and treatment across rare disease, cancer, immunology, and infectious disease. As variant interpretation may evolve with emerging evidence, sharing genetic data is essential to improve diagnostic accuracy and advance genomic medicine. However, practical guidance for implementing clinical genetic data sharing remains limited. The Canadian College of Medical Geneticists (CCMG), therefore, developed national guidance to support...
Jordan Lerner-Ellis

Crystal structure and biochemical analysis of the polyester-degrading carboxylesterase SM0281 from the symbiotic legume-associated rhizobacterium Sinorhizobium (Ensifer) meliloti

1 week ago
The microbial degradation of synthetic polyesters such as polyethylene terephthalate (PET) is mediated by diverse α/β-hydrolases, many of which remain poorly characterized. In this study, we investigated SM0281, an uncharacterized α/β-hydrolase from the symbiotic legume-associated rhizobacterium Sinorhizobium meliloti. Sequence analysis revealed that SM0281 shares low similarity with known polyester-degrading enzymes. Biochemical characterization of purified SM0281 demonstrated that it is a...
Sofia Lemak

Wearable-Based Assessment for Relapse Prediction Following Repetitive Transcranial Magnetic Stimulation for Depression: Protocol for a Feasibility Study (WARN-D Study)

1 week 1 day ago
CONCLUSIONS: This study will provide initial evidence on the feasibility and utility of wearable-based digital phenotyping in individuals receiving rTMS for TRD. Our findings will inform the design of future large-scale studies aimed at wearable-supported relapse prevention and precision monitoring in depression care.
Clarissa Dine

Melatonin, circadian metabolism, mitochondrial remodeling, and cell size dynamics in primitive hematopoietic stem cells

1 week 1 day ago
Primitive hematopoietic stem cells (pHSCs) sustain lifelong hematopoiesis through tightly regulated transitions between quiescence and activation. Circadian oscillations influence hematopoiesis; however, the mechanisms coordinating metabolic state and stem cell function daily remain incompletely defined. Here, we show that circadian cues coordinated a program of mitochondrial remodeling, metabolic reprogramming, and structural adaptation in pHSCs. At night, peak melatonin levels were associated...
Priyasmita Chakrabarti

A trainable language model with potential to modulate translation rates in non-model organisms by generating upstream untranslated region sequence libraries

1 week 5 days ago
Tuning protein expression in non-model organisms is often constrained by the lack of validated genetic parts and predictive design tools. Translational tuning through the modulation of upstream untranslated regions (5'-UTRs) offers a potentially organism-agnostic route, but existing methods typically rely on mechanistic assumptions, prior knowledge that may not be available in non-model contexts, or the screening of sequence libraries. Here, we present a simple generative approach for creating...
Alexander D Duggan

A chromatin-informed transcriptional regulatory framework to stratify patients and guide therapy selection in triple-negative breast cancer

1 week 6 days ago
Triple-negative breast cancer is an aggressive and heterogeneous breast cancer subtype with few effective targeted therapies and frequent resistance to chemotherapy. Here, we integrate transcriptional regulatory network inference with chromatin accessibility across a large-scale multi-system collection of primary tumors, patient-derived xenografts and model cell lines to quantify transcription factor activity and identify regulators that underpin triple-negative breast cancer identity. This...
Shalini Bahl

Assessing SARS-CoV-2 immune markers in vaccinated asymptomatic adults after household exposure in Canada (AB-PROTECT): a prospective cohort study

2 weeks ago
BACKGROUND: Determining the early immune response against SARS-CoV-2 in individuals who are vaccinated is essential for better understanding immune memory and informing COVID-19 vaccine design and use. We aimed to evaluate antibody and T-cell immune markers against SARS-CoV-2 infection among household contacts of index patients infected with SARS-CoV-2.
Christopher Kandel

A Truncated Serpin D1 Variant Regulates Adseverin-Dependent Actin Severing and Is Required for Osteoclastogenesis

2 weeks ago
Adseverin is a Ca^(2+)-dependent, actin severing protein that promotes fusion of osteoclast precursors in osteoclast formation. Currently it is not understood how actin severing activity is regulated in osteoclastogenesis. Mass spectrometry of adseverin immunoprecipitates from osteoclasts showed that adseverin associated with Serpin D1. Purified Serpin D1 interacted with adseverin in vitro in a Ca^(2+)-dependent manner. Ca^(2+) increased actin severing by ~2-fold. Cells that differentiated into...
Yongqiang Wang

Determinants of functional burden pleiotropy and gene dosage responses across human traits

2 weeks 1 day ago
Pleiotropic and monotonic effects of gene dosage are central to understanding comorbidities in developmental pediatric and psychiatric disorders, yet the underlying biological processes are not well characterized. Here we develop a functional burden analysis to investigate the association of all protein-coding copy-number variants, genome-wide, with 43 complex traits in approximately 500,000 UK Biobank participants. We test variant associations disrupting 172 tissue or cell-type gene sets,...
Sayeh Kazem