2,307,057 results match your criteria: "Department of Molecular & Cell Biology and Helen Wills Neuroscience Institute[Affiliation]"

Understanding Ion Transport in Alkyl Dicarbonates: An Experimental and Computational Study.

ACS Phys Chem Au

January 2025

Department of Fibre and Polymer Technology, Division of Coating Technology, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.

In an effort to improve safety and cycling stability of liquid electrolytes, the use of dicarbonates has been explored. In this study, four dicarbonate structures with varying end groups and spacers are investigated. The effect of these structural differences on the physical and ion transport properties is elucidated, showing that the end group has a significant influence on ion transport.

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Amorphous solids form an enormous and underutilized class of materials. In order to drive the discovery of new useful amorphous materials further we need to achieve a closer convergence between computational and experimental methods. In this review, we highlight some of the important gaps between computational simulations and experiments, discuss popular state-of-the-art computational techniques such as the Activation Relaxation Technique (ARTn) and Reverse Monte Carlo (RMC), and introduce more recent advances: machine learning interatomic potentials (MLIPs) and generative machine learning for simulations of amorphous matter (e.

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In-droplet hydrogen/deuterium exchange (HDX)-mass spectrometry (MS) experiments have been conducted for peptides of highly varied conformational type. A new model is presented that combines the use of protection factors (PF) from molecular dynamics (MD) simulations with intrinsic HDX rates ( ) to obtain a structure-to-reactivity calibration curve. Using the model, the relationship of peptide structural flexibility and HDX reactivity for different peptides is elucidated.

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Advancements in drug discovery: integrating CADD tools and drug repurposing for PD-1/PD-L1 axis inhibition.

RSC Adv

January 2025

LAQV and REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa Caparica Portugal

Despite significant strides in improving cancer survival rates, the global cancer burden remains substantial, with an anticipated rise in new cases. Immune checkpoints, key regulators of immune responses, play a crucial role in cancer evasion mechanisms. The discovery of immune checkpoint inhibitors (ICIs) targeting PD-1/PD-L1 has revolutionized cancer treatment, with monoclonal antibodies (mAbs) becoming widely prescribed.

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Blood carries some of the most valuable biomarkers for disease screening as it interacts with various tissues and organs in the body. Human blood serum is a reservoir of high molecular weight fraction (HMWF) and low molecular weight fraction (LMWF) proteins. The LMWF proteins are considered disease marker proteins and are often suppressed by HMWF proteins during analysis.

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iRGD-Targeted Biosynthetic Nanobubbles for Ultrasound Molecular Imaging of Osteosarcoma.

Int J Nanomedicine

January 2025

Department of Ultrasound, The second People's Hospital of Shenzhen, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518061, People's Republic of China.

Purpose: Osteosarcoma is the most common primary malignant tumor of the bone. However, there is a lack of effective means for early diagnosis due to the heterogeneity of tumors and the complexity of tumor microenvironment. αvβ3 integrin, a crucial role in the growth and spread of tumors, is not only an effective biomarker for cancer angiogenesis, but also highly expressed in many tumor cells.

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Purpose: The main purpose of the study was the formulation development of nanogels (NHs) composed of chondroitin sulfate (CS) and low molecular weight chitosan (lCH), loaded with a naringenin-β-cyclodextrin complex (NAR/β-CD), as a potential treatment for early-stage diabetic retinopathy.

Methods: Different formulations of NHs were prepared by varying polymer concentration, lCH ratio, and pH and, then, characterized for particle size, zeta potential, particle concentration (particles/mL) and morphology. Cytotoxicity and internalization were assessed in vitro using Human Umbilical Vein Endothelial Cells (HUVEC).

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Neonatal pseudo-hypoaldosteronism type 1 with a novel gene variant.

Sudan J Paediatr

January 2024

Department of Paediatrics, South West Acute Hospital, Enniskillen, UK.

Pseudohypoaldosteronism (PHA) is a rare disorder that mimics congenital adrenal hyperplasia (CAH). Renal type A1A of the disorder has a known gene mutation (NR3C2) and parents may be asymptomatic despite biochemical abnormalities. Meticulous interpretation of hormonal and biochemical data, and early liaison with endocrinology and renal teams are key in diagnosis.

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Perception of without infection induces in .

MicroPubl Biol

January 2025

Molecular and Integrative Physiology Department, University of Michigan-Ann Arbor, Ann Arbor, Michigan, United States.

pathogenic susceptibility is influenced by the worm's detection of its environment and its capacity to resist and resolve damage following infection. Here, we use a model where worms can sense, but not ingest, the pathogen (EF) We identify that perception of EF without infection induces the stress-response gene further identify that neural and intestinal signaling genes are necessary for induction without active infection. Finally, we show that overexpression is sufficient to extend lifespan with EF exposure, while KO is not detrimental, suggesting that additional expression benefits worms in this condition.

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Genetic and Molecular Underpinnings of Atrial Fibrillation.

NPJ Cardiovasc Health

December 2024

Department of Cardiology, Boston Children's Hospital, Boston, MA 02115, USA.

Atrial fibrillation (AF), the most common sustained arrhythmia, increases stroke and heart failure risks. Here we review genes linked to AF and mechanisms by which they alter AF risk. We highlight gene expression differences between atrial and ventricular cardiomyocytes, regulatory mechanisms responsible for these differences, and their potential contribution to AF.

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Background: Ceramide, a key molecule in sphingolipid metabolism, is recognized as a standalone predictor of long-term major adverse cardiac events (MACE). We explore if integrating the global registry of acute coronary events (GRACE) score with the ceramide risk score (ceramide test 1, CERT1) improves MACE prediction in patients with acute coronary syndrome (ACS) undergoing percutaneous coronary intervention (PCI).

Methods: This cohort study included 210 participants with ACS undergoing PCI.

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Inherited cardiac arrhythmias, which may lead to sudden cardiac death, represent a significant health risk, with genetic factors playing a key role in their development. The ankyrin 2 () gene, encoding ankyrin-B, is implicated in several heritable arrhythmia syndromes. variants have been linked to an inherited condition known as "ankyrin-B syndrome", which manifests as a spectrum of cardiac arrhythmias and cardiomyopathy.

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A primary rat neuron-astrocyte-microglia tri-culture model for studying mechanisms of neurotoxicity.

Front Toxicol

January 2025

Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA, United States.

Primary cell cultures from rodent brain are widely used to investigate molecular and cellular mechanisms of neurotoxicity. To date, however, it has been challenging to reliably culture endogenous microglia in dissociated mixed cultures. This is a significant limitation of most neural cell models given the growing awareness of the importance of interactions between neurons, astrocytes and microglia in defining responses to neurotoxic exposures.

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Aims And Background: This study aimed to assess the accuracy of digital intraoral scans in capturing the three-dimensional (3D) surface of teeth and dental arches in mixed dentition, compared with conventional plaster models. Intraoral scanning technology has seen rapid advancements in recent years, revolutionizing orthodontic and dental practices. However, its accuracy in mixed dentition remains a subject of investigation.

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Background/aim: Early childhood caries (ECC) is a prevalent dental disease, influenced by genetic and environmental factors. Human leukocyte antigens (HLA) have been suggested as a predisposing factor. This study aims to estimate and correlate HLA-DR and HLA-DQ activity in the saliva of caries-active and caries-free children, potentially aiding disease diagnosis and prevention.

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Tissue regeneration involves dynamic dialogue between and among different cells and their surrounding matrices. Bone regeneration is specifically governed by reciprocity between osteoblasts and osteoclasts within the bone microenvironment. Osteoclast-directed resorption and osteoblast-directed formation of bone are essential to bone remodeling, and the crosstalk between these cells is vital to curating a sequence of events that culminate in the creation of bone tissue.

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In silico approaches for developing sesquiterpene derivatives as antagonists of human nicotinic acetylcholine receptors (nAChRs) for nicotine addiction treatment.

Curr Res Struct Biol

June 2025

Department of Pharmaceutical Analysis and Medicinal Chemistry, Faculty of Pharmacy, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang KM 21, Sumedang, 45363, Indonesia.

Cinnamomum, a genus within the Lauraceae family, has gained global recognition due to its wide-ranging utility. Extensive research has been dedicated to exploring its phytochemical composition and pharmacological effects. Notably, the uniqueness of Cinnamomum lies in its terpenoid content, characterized by distinctive structures and significant biological implications.

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The diagnosis and management of complex neurological conditions such as New-Onset Refractory Status Epilepticus (NORSE) and central nervous system (CNS) infections caused by non-tuberculous mycobacteria (NTM) pose substantial difficulties in intensive care units (ICUs). This article combines a case report and a literature review that explores the diagnostic dilemmas and therapeutic strategies for these critical conditions. We report the case of an 83-year-old female with chronic granulomatous meningitis secondary to NTM, presenting a challenging diagnostic and complex management complexity typical of such a rare disease through a period time of five years.

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Purpose We aimed to report an innovative single-site endoscopic surgery for soft tissue lesions performed at our center. Methods All patients who underwent soft tissue surgery were reviewed. All consecutive patients who underwent single-site endoscopic surgery between September 2019 and March 2024 were included in the study.

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A vacuolar invertase gene modulates sugar metabolism and postharvest fruit quality and stress resistance in tomato.

Hortic Res

January 2025

Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, China.

Sugars act as signaling molecules to modulate various growth processes and enhance plant tolerance to various abiotic and biotic stresses. Moreover, sugars contribute to the postharvest flavor in fleshy fruit crops. To date, the regulation of sugar metabolism and its effect in plant growth, fruit ripening, postharvest quality, and stress resistance remains not fully understood.

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Multiple myeloma is characterized by malignant cells which produce high amounts of monoclonal immunoglobulin. Myeloma cells are, therefore, dependent on effective protein degradation. Proteasomal protein degradation is targeted by proteasome inhibitors in routine care.

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Background: There is limited knowledge of the long-term effects on the immune system after treatment for diffuse large B-cell lymphoma (DLBCL).

Methods: This study included DLBCL patients from the Danish Lymphoma Registry who obtained complete remission (CR) after (R)-CHOP (cyclophosphamide, doxorubicin, vincristine, prednisolone)-like immunochemotherapy. Each R CHOP-like treated patient was matched to five comparators from the Danish background population and furthermore compared to R CHOP-like treated patients.

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Multiple sclerosis (MS) affects 2.8 million people worldwide. Although the cause is unknown, various risk factors might be involved.

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The Role of Structural Flexibility in Hydrocarbon-Stapled Peptides Designed to Block Viral Infection via Human ACE2 Mimicry.

Pept Sci (Hoboken)

November 2024

Department of Pediatrics, Section of Hematology/Oncology, The University of Chicago, Chicago, Illinois 60637, United States of America.

The COVID-19 pandemic drove a uniquely fervent pursuit to explore the potential of peptide, antibody, protein, and small-molecule based antiviral agents against severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2). The interaction between the SARS-CoV2 spike protein with the angiotensin-converting enzyme 2 (ACE2) receptor that mediates viral cell entry was a particularly interesting target given its well described protein-protein interaction (PPI). This PPI is mediated by an α-helical portion of ACE2 binding to the receptor binding domain (RBD) of the spike protein and thought to be susceptible to blockade through molecular mimicry.

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