782 results match your criteria: "McDonnell Genome Institute.[Affiliation]"

We present a study of rare germline predisposition variants in 954 unrelated individuals with multiple myeloma (MM) and 82 MM families. Using a candidate gene approach, we identified such variants across all age groups in 9.1% of sporadic and 18% of familial cases.

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Soil-transmitted helminth (STH) infections affect one-fourth of the global population and pose a significant threat to human and animal health, with limited treatment options and emerging drug resistance. (whipworm) stands out as a neglected disease, necessitating new drugs to address this unmet medical need. We discovered that several different chemical series of related human Provirus Integration sites for Moloney murine leukemia virus (PIM) family kinase inhibitors possess potent anthelmintic activity by using whole-worm motility assays.

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Evolution of the umbilical cord blood proteome across gestational development.

Sci Rep

January 2025

Department of Pediatrics, Division of Infectious Diseases, Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.

Neonatal health is dependent on early risk stratification, diagnosis, and timely management of potentially devastating conditions, particularly in the setting of prematurity. Many of these conditions are poorly predicted in real-time by clinical data and current diagnostics. Umbilical cord blood may represent a novel source of molecular signatures that provides a window into the state of the fetus at birth.

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Myeloid malignancies are heterogenous disorders characterized by distinct molecular drivers but share convergence of oncogenic signaling pathways and propagation by ripe pro-inflammatory niches. Here, we establish a comprehensive transcriptional atlas across the spectrum of myeloproliferative neoplasms (MPN) and secondary acute myeloid leukemia (sAML) through RNA-sequencing of 158 primary samples encompassing CD34+ hematopoietic stem/progenitor cells and CD14+ monocytes. Supported by mass cytometry (CyTOF) profiling, we reveal aberrant networks of PI3K/AKT/mTOR signalling and NFκB-mediated hyper-inflammation.

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Alzheimer's disease (AD) is the most prevalent neurodegenerative disorder. Antiamyloid antibody treatments modestly slow disease progression in mild dementia due to AD. Emerging evidence shows that homeostatic dysregulation of the brain immune system, especially that orchestrated by microglia, plays an important role in disease onset and progression.

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Environmental Variation Influences Genome Evolution in Hispaniolan Trunk Anoles (Anolis distichus).

Mol Ecol

February 2025

Department of Ecology and Evolutionary Biology, Biodiversity Institute, University of Kansas, Lawrence, Kansas, USA.

Environmental variation often drives evolutionary processes like population differentiation, local adaptation and speciation. We used genome-scale data to investigate the contribution of environmental variation to evolution of the North Caribbean bark anole (Anolis distichus), a widespread common lizard that exhibits impressive phenotypic variation across varying habitats on the island of Hispaniola. We obtained new double-digest restriction-associated DNA sequence data (ddRADseq) from nearly 200 individuals and used 53 GIS data layers representing a range of environmental variables.

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Following amputation, zebrafish regenerate their injured caudal fin through lineage-restricted reprogramming. Although previous studies have charted various genetic and epigenetic dimensions of this process, the intricate gene regulatory programs shared by, or unique to, different regenerating cell types remain underinvestigated. Here, we mapped the regulatory landscape of fin regeneration by applying paired snRNA-seq and snATAC-seq on uninjured and regenerating fins.

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Increased expression of the cyclin-dependent kinase inhibitor p16Ink4a (p16) is detected in neurons of human Alzheimer's disease (AD) brains and during normal aging. Importantly, selective eliminating p16-expressing cells in AD mouse models attenuates tau pathologies and improves cognition. But whether and how p16 contributes to AD pathogenesis remains unclear.

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Free sialic acid storage disorder (FSASD) is a rare autosomal recessive lysosomal storage disease caused by pathogenic SLC17A5 variants with variable disease severity. We performed a multidisciplinary evaluation of an adolescent female with suspected lysosomal storage disease and conducted comprehensive studies to uncover the molecular etiology. The proband exhibited intellectual disability, a storage disease gestalt, and mildly elevated urine free sialic acid levels.

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Two cardinal features of ALS, reduced STMN2 and pathogenic TDP-43, synergize to accelerate motor decline in mice.

Exp Neurol

February 2025

Department of Developmental Biology, Washington University School of Medicine, St. Louis 63110, United States; Needleman Center for Neurometabolism and Axonal Therapeutics, St. Louis 63110, United States. Electronic address:

Pathological TDP-43 loss from the nucleus and cytoplasmic aggregation occurs in almost all cases of ALS and half of frontotemporal dementia patients. Stathmin2 (Stmn2) is a key target of TDP-43 regulation and aberrantly spliced Stmn2 mRNA is found in patients with ALS, frontotemporal dementia, and Alzheimer's Disease. STMN2 participates in the axon injury response and its depletion in vivo partially replicates ALS-like symptoms including progressive motor deficits and distal NMJ denervation.

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A proteogenomic analysis of cervical cancer reveals therapeutic and biological insights.

Nat Commun

November 2024

Key Laboratory of Multi-Cell Systems, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai, China.

Although the incidence of cervical cancer (CC) has been reduced in high-income countries due to human papillomavirus (HPV) vaccination and screening strategies, it remains a significant public health issue that poses a threat to women's health in low-income countries. Here, we perform a comprehensive proteogenomic profiling of CC tumors obtained from 139 Chinese women. Integrated proteogenomic analysis links genetic aberrations to downstream pathogenesis-related pathways and reveals the landscape of HPV-associated multi-omic changes.

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Autosomal dominant Fanconi syndrome due to a variant (GATM-FS), causes accumulation of misfolded arginine-glycine amidinotransferase (AGAT) in proximal renal tubules leading to cellular injury. GATM-FS presents during childhood and progresses to end-stage kidney disease (ESKD) in adults. We study creatine metabolism in two individuals of unrelated families with a known variant and the effect of creatine supplementation in kidney organoids.

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Background: Neoantigen-targeting therapies including personalized vaccines have shown promise in the treatment of cancers, particularly when used in combination with checkpoint blockade therapy. At least 100 clinical trials involving these therapies have been initiated globally. Accurate identification and prioritization of neoantigens is crucial for designing these trials, predicting treatment response, and understanding mechanisms of resistance.

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Background: Neoantigen vaccines can induce or enhance highly specific antitumor immune responses with minimal risk of autoimmunity. We have developed a neoantigen DNA vaccine platform capable of efficiently presenting both HLA class I and II epitopes and performed a phase 1 clinical trial in triple-negative breast cancer patients with persistent disease on surgical pathology following neoadjuvant chemotherapy, a patient population at high risk of disease recurrence.

Methods: Expressed somatic mutations were identified by tumor/normal exome sequencing and tumor RNA sequencing.

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Capsaicin/silica-infused polygalacturonic acid/polyvinyl alcohol nano-matrix for enhanced wound healing in skin injuries.

Int J Biol Macromol

December 2024

Department of Chemistry of Natural and Microbial Products, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Dokki, Giza 12622, Egypt.

Wound healing is a complex physiological process, demanding advanced strategies for efficient tissue regeneration. To address this, we developed a novel nanofibrous matrix composed of polygalacturonic acid (PGA), polyvinyl alcohol (PVA), capsaicin, and zinc-doped mesoporous silica (Zn/MCM-41). This copolymeric matrix offers enhanced mechanical stability, controlled drug release, and improved cellular adhesion and proliferation, leading to effective tissue regeneration.

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To study the spatial interactions among cancer and non-cancer cells, we here examined a cohort of 131 tumour sections from 78 cases across 6 cancer types by Visium spatial transcriptomics (ST). This was combined with 48 matched single-nucleus RNA sequencing samples and 22 matched co-detection by indexing (CODEX) samples. To describe tumour structures and habitats, we defined 'tumour microregions' as spatially distinct cancer cell clusters separated by stromal components.

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Article Synopsis
  • Analyzing somatic evolution in tumors over time and space is crucial for cancer research, and CalicoST is introduced as a new algorithm that enhances understanding by inferring copy number aberrations (CNAs) from spatially resolved transcriptomics (SRT) data.
  • CalicoST identifies types of CNAs, such as copy-neutral loss of heterozygosity and mirrored subclonal CNAs, which are often overlooked in traditional total copy number analysis, achieving an impressive average accuracy of 86% using data from nine patients.
  • This algorithm successfully reconstructs the phylogeography of tumors in three-dimensional space, illustrating mirrored subclonal CNAs in a prostate cancer study, highlighting the genetic and physical complexity of tumor evolution.
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Article Synopsis
  • Breast cancer (BC) has distinct molecular subtypes influenced by different cell origins, yet the transcriptional networks for these subtypes are not well understood.
  • This study utilized advanced techniques on 61 samples from 37 BC patients to reveal how gene expression and chromatin accessibility connect BC subtypes to their likely cells of origin.
  • Key transcription factors BHLHE40 and KLF5 were found to play crucial roles in luminal and basal-like tumors, respectively, and exhausted CD8 T cells were linked to immune dysfunction in basal-like BC, showcasing the potential of single-cell level analysis in understanding cancer lineages.
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is the agent of onchocerciasis (river blindness) and targeted by WHO for elimination though mass drug administration with ivermectin. A small percentage of adult worms develop pleomorphic neoplasms (PN) that are positively associated with the frequency of ivermectin treatment. Worms with PN have a lower life expectancy and a better understanding about the proteins expressed in PN, and how PN affect protein expression in different tissues could help to elucidate the mechanisms of macrofilaricidal activity of ivermectin.

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Age-related cognitive decline is associated with altered physiology of the hippocampus. While changes in gene expression have been observed in aging brain, the regulatory mechanisms underlying these changes remain underexplored. We generated single-nucleus gene expression, chromatin accessibility, DNA methylation, and 3D genome data from 40 human hippocampal tissues spanning adult lifespan.

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Targeting immune-fibroblast cell communication in heart failure.

Nature

November 2024

Center for Cardiovascular Research, Division of Cardiology, Department of Medicine, Washington University School of Medicine, Saint Louis, MO, USA.

Article Synopsis
  • The study investigates the link between inflammation and tissue fibrosis in human cardiac diseases, revealing unique fibroblast populations that contribute to heart dysfunction.
  • Researchers used advanced techniques on heart samples to uncover these fibroblast types and their relationship with immune cells, specifically CCR2 macrophages, in promoting fibrosis through IL-1β signaling.
  • By blocking IL-1β signaling, the study demonstrated reduced fibrosis and improved heart function, suggesting that targeting inflammation could be a promising approach for treating cardiac fibrosis.
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With aging, bone mass declines and the anabolic effects of skeletal loading diminish. While much research has focused on gene transcription, how bone ages and loses its mechanoresponsiveness at the protein level remains unclear. We developed a novel proteomics approach and performed a paired mass spectrometry and RNA-seq analysis on tibias from young-adult (5-month) and old (22-month) mice.

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Article Synopsis
  • Whole genome sequencing (WGS) helps identify rare genetic variants that may explain the missing heritability of coronary artery disease (CAD) by analyzing 4,949 cases and 17,494 controls from the NHLBI TOPMed program.
  • The study estimates that the heritability of CAD is around 34.3%, with ultra-rare variants contributing about 50%, especially those with low linkage disequilibrium.
  • Functional annotations show significant enrichment of CAD heritability, highlighting the importance of ultra-rare variants and specific regulatory mechanisms in different cells as major factors influencing genetic risk for the disease.
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Staphylococcus aureus remains a leading global cause of bacterial infection-associated mortality and has eluded prior vaccine development efforts. S. aureus α-toxin (Hla) is an essential virulence factor in disease, impairing the T cell response to infection.

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