58 results match your criteria: "NY (A.C.K.); and Albert Einstein College of Medicine[Affiliation]"

Effective targeting of somatic cancer mutations to enhance the efficacy of cancer immunotherapy requires an individualized approach. Autogene cevumeran is a uridine messenger RNA lipoplex-based individualized neoantigen-specific immunotherapy designed from tumor-specific somatic mutation data obtained from tumor tissue of each individual patient to stimulate T cell responses against up to 20 neoantigens. This ongoing phase 1 study evaluated autogene cevumeran as monotherapy (n = 30) and in combination with atezolizumab (n = 183) in pretreated patients with advanced solid tumors.

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A feature in the pathophysiology of major depressive disorder (MDD), a mood disorder, is the impairment of excitatory synapses in the prefrontal cortex. Intriguingly, different types of treatment with fairly rapid antidepressant effects (within days or a few weeks), such as ketamine, electroconvulsive therapy and non-invasive neurostimulation, seem to converge on enhancement of neural plasticity. However, the forms and mechanisms of plasticity that link antidepressant interventions to the restoration of excitatory synaptic function are still unknown.

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Psilocybin is a serotonergic psychedelic with therapeutic potential for treating mental illnesses. At the cellular level, psychedelics induce structural neural plasticity, exemplified by the drug-evoked growth and remodeling of dendritic spines in cortical pyramidal cells. A key question is how these cellular modifications map onto cell type-specific circuits to produce psychedelics' behavioral actions.

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Patient-Specific Myocardial Infarction Risk Thresholds From AI-Enabled Coronary Plaque Analysis.

Circ Cardiovasc Imaging

October 2024

Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA (R.J.J.M., N.M., A.L., A.S., C.P., A.K., P.M., A.R., K.G., A.C.K., D.H., K.K., G.F.T., J.G., H.G., S.C., D.S.B., P.J.S., D.D.).

Article Synopsis
  • Coronary computed tomography angiography (CCTA) is used to evaluate cardiovascular risk by quantifying coronary plaque, and deep learning technology helps automate this process.
  • A study involving 2803 patients analyzed how age and sex affect coronary plaque volume and its relation to the risk of myocardial infarction, showing that plaque volume increases with age and is typically higher in men.
  • Patients with coronary plaque in the ≥75th percentile were found to have a significantly higher risk of myocardial infarction compared to those below the 50th percentile, suggesting that deep learning-based plaque measurements can effectively predict cardiac events.
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  • The Genome in a Bottle Consortium (GIAB) is creating matched tumor-normal samples that are publicly consented for sharing genomic data and cell lines, focusing on pancreatic ductal adenocarcinoma (PDAC).
  • They provide a comprehensive genomic dataset from the first individual, combining high-depth DNA from tumor and normal cells using advanced whole genome sequencing technologies.
  • This open-access resource aims to help develop benchmarks for detecting genetic variants in cancer, fostering innovation in genome measurement and analysis tools.
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  • Recent research highlights the therapeutic potential of serotonergic psychedelics, specifically focusing on 2,5-dimethoxy-4-iodoamphetamine (DOI) and its anxiety-reducing effects.
  • The study reveals that GABAergic interneurons in the ventral hippocampus, particularly PV-positive interneurons, play a crucial role in the anxiolytic effects of DOI by interacting with serotonin (5-HT) receptors.
  • Findings suggest that enhancing the activity of these interneurons in the hippocampus leads to increased anxiety relief, emphasizing the significance of 5-HT receptors in the vHpc's CA1/subiculum region for the psychedelic's therapeutic effects.
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  • Oxa-iboga compounds are newly developed analogs of ibogaine, designed to retain therapeutic benefits while eliminating cardiac safety risks.
  • These compounds demonstrate effectiveness in reducing opioid intake and withdrawal symptoms in animal models, outperforming traditional treatments.
  • Oxa-noribogaine specifically acts as a kappa opioid receptor agonist, offering a unique approach to treating substance use disorders with potential for long-lasting effects.
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Psilocybin, ketamine, and MDMA are psychoactive compounds that exert behavioral effects with distinguishable but also overlapping features. The growing interest in using these compounds as therapeutics necessitates preclinical assays that can accurately screen psychedelics and related analogs. We posit that a promising approach may be to measure drug action on markers of neural plasticity in native brain tissues.

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Article Synopsis
  • AlphaFold2 (AF2) models show promise in drug discovery for ligands but have variable performance when retrospectively tested.
  • In a study, researchers docked large libraries of new molecules against AF2 models of σ and serotonin 2A receptors, finding similar hit rates and affinities to those obtained from experimental structures.
  • Cryo-electron microscopy confirmed that AF2-model predictions were relevant, suggesting that AF2 models can find low-energy conformations important for ligand discovery, even if they differ from experimental structures.
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Psychedelic substances such as lysergic acid diethylamide (LSD) and psilocybin show potential for the treatment of various neuropsychiatric disorders. These compounds are thought to mediate their hallucinogenic and therapeutic effects through the serotonin (5-hydroxytryptamine (5-HT)) receptor 5-HT (ref. ).

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AlphaFold2 (AF2) and RosettaFold have greatly expanded the number of structures available for structure-based ligand discovery, even though retrospective studies have cast doubt on their direct usefulness for that goal. Here, we tested unrefined AF2 models , comparing experimental hit-rates and affinities from large library docking against AF2 models vs the same screens targeting experimental structures of the same receptors. In docking screens against the σ and the 5-HT2A receptors, the AF2 structures struggled to recapitulate ligands that we had previously found docking against the receptors' experimental structures, consistent with published results.

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Dynamic Foraging Behavior Performance Is Not Affected by Haploinsufficiency.

eNeuro

December 2023

Center for Integrative Neuroscience, Department of Neurology, University of California, San Francisco, CA 94158.

Dysfunction in the gene , which encodes the voltage-gated sodium channel Na1.2, is strongly associated with neurodevelopmental disorders including autism spectrum disorder and intellectual disability (ASD/ID). This dysfunction typically manifests in these disorders as a haploinsufficiency, where loss of one copy of a gene cannot be compensated for by the other allele.

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Pancreatic ductal adenocarcinoma (PDAC) cells use glutamine (Gln) to support proliferation and redox balance. Early attempts to inhibit Gln metabolism using glutaminase inhibitors resulted in rapid metabolic reprogramming and therapeutic resistance. Here, we demonstrated that treating PDAC cells with a Gln antagonist, 6-diazo-5-oxo-L-norleucine (DON), led to a metabolic crisis in vitro.

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Immunogenicity of NVX-CoV2373 heterologous boost against SARS-CoV-2 variants.

NPJ Vaccines

July 2023

Division of Microbiology and Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA.

As part of a multicenter study evaluating homologous and heterologous COVID-19 booster vaccines, we assessed the magnitude, breadth, and short-term durability of binding and pseudovirus-neutralizing antibody (PsVNA) responses following a single booster dose of NVX-CoV2373 in adults primed with either Ad26.COV2.S, mRNA-1273, or BNT162b2 vaccines.

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ELEVATE-RR demonstrated noninferior progression-free survival and lower incidence of key adverse events (AEs) with acalabrutinib vs ibrutinib in previously treated chronic lymphocytic leukemia. We further characterize AEs of acalabrutinib and ibrutinib via post hoc analysis. Overall and exposure-adjusted incidence rate was assessed for common Bruton tyrosine kinase inhibitor-associated AEs and for selected events of clinical interest (ECIs).

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Pancreatic ductal adenocarcinoma (PDAC) has one of the lowest 5-year survival rates of any cancer in the United States. Our previous work has shown that autophagy can promote PDAC progression. We recently established the importance of autophagy in regulating bioavailable iron to control mitochondrial metabolism in PDAC.

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Macroautophagy is a cellular quality-control process that degrades proteins, protein aggregates and damaged organelles. Autophagy plays a fundamental role in cancer where, in the presence of stressors (for example, nutrient starvation, hypoxia, mechanical pressure), tumor cells activate it to degrade intracellular substrates and provide energy. Cell-autonomous autophagy in tumor cells and cell-nonautonomous autophagy in the tumor microenvironment and in the host converge on mechanisms that modulate metabolic fitness, DNA integrity and immune escape and, consequently, support tumor growth.

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Reprogramming of tissue metabolism during cancer metastasis.

Trends Cancer

June 2023

Perlmutter Cancer Center, New York University School of Medicine, New York, NY, USA; Department of Radiation Oncology, New York University Grossman School of Medicine, New York, NY, USA. Electronic address:

Cancer is a systemic disease that involves malignant cell-intrinsic and -extrinsic metabolic adaptations. Most studies have tended to focus on elucidating the metabolic vulnerabilities in the primary tumor microenvironment, leaving the metastatic microenvironment less explored. In this opinion article, we discuss the current understanding of the metabolic crosstalk between the cancer cells and the tumor microenvironment, both at local and systemic levels.

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Article Synopsis
  • Pancreatic ductal adenocarcinoma (PDAC) is projected to become the second deadliest cancer by 2040, with low response rates to treatment such as chemotherapy.
  • Research indicates that the microbiota-derived metabolite, indole-3-acetic acid (3-IAA), is linked to better treatment outcomes in PDAC patients, suggesting the potential influence of diet on therapy response.
  • Manipulating dietary tryptophan and 3-IAA levels in mouse models enhances chemotherapy efficacy by affecting neutrophil functions and lowering ROS-degrading enzyme activity, ultimately hindering cancer cell growth.
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The neural basis of psychedelic action.

Nat Neurosci

November 2022

Department of Pharmacology, School of Medicine, University of North Carolina, Chapel Hill, NC, USA.

Article Synopsis
  • Psychedelics are compounds that activate serotonin 2A receptors, causing significant changes in how people perceive, think, and feel.
  • The review explores the chemical properties of various psychoactive substances and how they interact with the nervous system, focusing on serotonin receptors and their signaling pathways for drug development.
  • It also examines how psychedelics affect brain activity and structure, supported by neuroimaging studies that reveal their influence on brain networks, particularly in relation to behavior.
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The Omicron variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) exhibits reduced susceptibility to vaccine-induced neutralizing antibodies, requiring a boost to generate protective immunity. We assess the magnitude and short-term durability of neutralizing antibodies after homologous and heterologous boosting with mRNA and Ad26.COV2.

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A hallmark of pancreatic tumors is their highly desmoplastic stroma composed of fibroblasts, immune cells, and a dense network of collagen fibers. Tumor-associated macrophages are one of the most abundant immune cell populations in the pancreatic tumor stroma. Their protumorigenic function has been attributed predominantly to their capacity to promote immune evasion and metastasis.

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The Effect of Sleep Position Preference on Eyelid and Eyebrow Symmetry.

Ophthalmic Plast Reconstr Surg

May 2022

Department of Ophthalmology and Visual Sciences, University of Iowa Health Care, Iowa City, Iowa, U.S.A.

Purpose: To investigate the relationship between sleep position preference and eyebrow and eyelid position and degree of upper eyelid dermatochalasis.

Methods: A prospective study evaluating the impact of sleep position on facial asymmetry was conducted at an academic ophthalmology department. Eligibility criteria included the absence of periocular-altering trauma or surgery, contact lens use, or other periorbital disease processes.

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Background And Purpose: Clinical fluctuations in ischemic stroke symptoms are common, but fluctuations before hospital arrival have not been previously characterized.

Methods: A standardized qualitative assessment of fluctuations before hospital arrival was obtained in an observational study that enrolled patients with mild ischemic stroke symptoms (National Institutes of Health Stroke Scale [NIHSS] score of 0-5) present on arrival to hospital within 4.5 hours of onset, in a subset of 100 hospitals participating in the Get With The Guidelines-Stroke quality improvement program.

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