1,535 results match your criteria: "117599 Singapore; Genome Institute of Singapore[Affiliation]"

An integrated magnetoimpedance biosensor microfluidic magnetic platform for the evaluation of the cardiac marker cTnI.

Anal Methods

January 2025

Microelectronic Research & Development Center, School of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200444, China.

An integrated magnetoimpedance (MI) biosensor microfluidic magnetic platform was proposed for the evaluation of the cardiac marker, cardiac troponin I (cTnI). This bioanalyte evaluation platform mainly comprised three external permanent magnets (PMs), one MI element, two peelable SiO film units and a microfluidic chip (MFC). The MI element was made of micro-electro-mechanical system (MEMS)-based multilayered [Ti (6 nm)/FeNi (100 nm)]/Cu (400 nm)/[Ti (6 nm)/FeNi (100 nm)] thin films and designed as meander structures with closed magnetic flux.

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Liposarcoma is one of the most prevalent forms of soft tissue sarcoma, and its prognosis is highly dependent on its molecular subtypes. Non-coding RNAs (ncRNAs) like microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) can bind various cellular targets to regulate carcinogenesis. By affecting the expressions and activities of their downstream targets post-transcriptionally, dysregulations of miRNAs can alter different oncogenic signalling pathways, mediating liposarcoma progression.

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STING-Activating Polymers Boost Lymphatic Delivery of mRNA Vaccine to Potentiate Cancer Immunotherapy.

Adv Mater

December 2024

Department of Diagnostic Radiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119074, Singapore.

The unprecedented success of mRNA vaccines against COVID-19 has inspired scientists to develop mRNA vaccines for cancer immunotherapy. However, using nucleoside modified mRNA as vaccine, though evading innate immune toxicity, diminishes its therapeutic efficacy for cancers. Here, we report a polyvalent stimulator of interferon genes (STING) activating polymer (termed as PD) to bolster the immunogenicity of mRNA vaccine.

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The role of inflammatory gene polymorphisms in severe COVID-19: a review.

Virol J

December 2024

Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.

The COVID-19 pandemic, caused by the novel coronavirus SARS-CoV-2, has profoundly impacted global healthcare systems and spurred extensive research efforts over the past three years. One critical aspect of the disease is the intricate interplay between the virus and the host immune response, particularly the role of inflammatory gene expression in severe COVID-19. While numerous previous studies have explored the role of genetic polymorphisms in COVID-19, research specifically focusing on inflammatory genes and their associations with disease severity remains limited.

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Regeneration of oral soft tissue defects, including mucogingival defects associated with the recession or loss of gingival and/or mucosal tissues around teeth and implants, is crucial for restoring oral tissue form, function, and health. This study presents a novel approach using three-dimensional (3D) bioprinting to fabricate individualized grafts with precise size, shape, and layer-by-layer cellular organization. A multicomponent polysaccharide/fibrinogen-based bioink is developed, and bioprinting parameters are optimized to create shape-controlled oral soft tissue (gingival) constructs.

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Rat Sarcoma (RAS)-driven cancers have been one of the main foci in the field of cancer science for over four decades. Despite significant improvement in understanding the biology of RAS oncogene, the method to target RAS-mutated cancers is still unclear. In recent years, the role for RAS beyond its hyperproliferation has been extensively documented.

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Spatiotemporal Nano-Regulator Unleashes Anti-Tumor Immunity by Overcoming Dendritic Cell Tolerance and T Cell Exhaustion in Tumor-Draining Lymph Nodes.

Adv Mater

December 2024

State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.

Lymph nodes are crucial immune foci as the primary target for cancer immunotherapy. However, the anti-tumor functions of tumor-draining lymph nodes (TDLNs) are critically suppressed by tumors. Here, a novel spatiotemporal nano-regulator is presented, designed to modulate the dendritic cells (DCs) in TDLNs, establishing a supportive niche for immune surveillance.

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[F]AlF-NOTA-pentixather PET/CT of CXCR4 in patients with suspected primary hyperaldosteronism.

Theranostics

December 2024

Department of Nuclear Medicine, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China.

Distinguishing unilateral aldosterone-producing adenomas (APA) from idiopathic hyperaldosteronism (IHA), nonfunctional adrenal adenoma (NFA), and pheochromocytoma (PHEO) within primary aldosteronism (PA) presents a significant challenge. Studies have demonstrated high levels of chemokine receptor (CXCR) 4 expression in APA, thereby validating the use of Ga-labeled CXCR4 PET/CT for detecting APA. This study evaluates the efficacy of [F]AlF-NOTA-pentixather PET/CT in distinguishing APA from other PA types.

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Wireless and battery-free radio-frequency (RF) sensors can be used to create physical spaces that ambiently sense and respond to human activities. Making such sensors ultra-flexible and transparent is important to preserve the aesthetics of living environments, accommodate daily activities, and functionally integrate with objects. However, existing RF sensors are unable to simultaneously achieve high transparency, flexibility, and the electrical conductivity required for remote room-scale operation.

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Cell confinement by micropatterning induces phenotypic changes in cancer-associated fibroblasts.

Acta Biomater

December 2024

Translational Tumor Engineering Laboratory, Department of Biomedical Engineering, National University of Singapore, Singapore 119276, Singapore; Cancer Science Institute, National University of Singapore, Singapore 117599, Singapore; The N.1 Institute for Health, National University of Singapore, Singapore 117456, Singapore. Electronic address:

Article Synopsis
  • * The research explored how the shape and confinement of CAFs on specially designed surfaces influence their morphology and gene expression, finding that certain conditions led to changes toward more inflammatory and desmoplastic CAF types.
  • * The findings suggest that the way CAFs are physically arranged affects their response to cancer therapies, suggesting that understanding CAF plasticity can help develop better treatment strategies.
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Myocardial delivery of miR30d with peptide-functionalized milk-derived extracellular vesicles for targeted treatment of hypertrophic heart failure.

Biomaterials

May 2025

Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119228, Singapore; Nanomedicine Translational Research Programme, Centre for NanoMedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117609, Singapore; Cardiovascular Research Institute (CVRI), National University Heart Centre Singapore (NUHCS), Singapore, 117599, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117593, Singapore. Electronic address:

miR30d has been shown to reverse cardiac hypertrophy. However, effective delivery of miR30d to the heart is challenging. Here, we engineered milk-derived extracellular vesicles (mEVs) by surface functionalization with an ischemic myocardium-targeting peptide (IMTP) and encapsulated miR30d to develop a formulation, the miR30d-mEVs, enabling targeted delivery of miR30d to the injured heart.

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NIR-II Imaging for Tracking the Spatiotemporal Immune Microenvironment in Atherosclerotic Plaques.

ACS Nano

December 2024

Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Imaging Diagnostic and Interventional Minimally Invasive Institute, The Fifth Affiliated Hospital of Wenzhou Medical University, No 289, Kuocang Road, Lishui 323000, China.

Article Synopsis
  • - The study focuses on how the inflammatory immune microenvironment contributes to atherosclerotic plaque erosion and rupture, using near-infrared-II (NIR-II) fluorescence imaging for monitoring these changes over time.
  • - Three types of NIR-II probes were developed to specifically target different macrophage populations and plaques, allowing precise imaging of atherosclerotic conditions and the roles of M1 and M2 macrophages.
  • - Key findings indicate that M1 macrophages create a harmful inflammatory environment, while M2 macrophages are important for lipid clearance in early plaques, highlighting the significance of macrophage polarization and metabolic changes in atherosclerosis progression.
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Article Synopsis
  • Fibroblast-like synoviocytes and angiogenesis are key factors in the progression of rheumatoid arthritis (RA), and this study evaluated the effectiveness of [F]AlF-FAPI-RGD PET/CT imaging as a diagnostic tool for assessing disease activity and treatment response in RA patients.
  • The study included 28 patients (average age 55), who underwent clinical evaluations and imaging at the start and after three months of treatment; the imaging revealed a higher detection rate of affected joints compared to traditional clinical assessments.
  • Results indicated that PET imaging could provide valuable insights into disease status, showing significant decreases in certain imaging parameters for those responding to treatment, and it may also help in identifying early subclinical RA.
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Article Synopsis
  • * The study aims to explore if combining standard exercises with pulse electromagnetic field therapy can enhance stability and reduce muscle weakness in patients with chronic ankle instability.
  • * A randomized trial with 48 participants will compare the effects of active therapy with a placebo over 8 weeks, with evaluations conducted at multiple follow-up points.
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To compare the diagnostic value of [F]AlF-LNC1007, [F]FDG, and [F]AlF-NOTA-FAPI-04 PET/CT in breast cancer. 33 patients with highly suspected or already diagnosed but untreated breast cancer were enrolled in the study and underwent [F]AlF-LNC1007 (30 patients), [F]FDG (22 patients), and [F]AlF-NOTA-FAPI-04 (8 patients) PET/CT. Quantitative measurements included the SUV and tumor-to-background ratio (TBR) for all lesions and background tissues.

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Single cell variant to enhancer to gene map for coronary artery disease.

medRxiv

November 2024

Center for Cardiovascular Research, Division of Cardiology, Department of Medicine, Washington University School of Medicine, Saint Louis, MO, 63110, USA.

Article Synopsis
  • The study connects genetic variants linked to coronary artery disease (CAD) with cellular and molecular traits by analyzing chromatin accessibility and gene expression in human coronary arteries.
  • Through single-cell analysis, researchers identified thousands of specific chromatin accessibility loci (caQTLs) and found that smooth muscle cells (SMCs) are particularly susceptible to genetic risks associated with CAD.
  • They developed a comprehensive mapping approach to trace disease variants to potential causal genes across different cell types and confirmed their findings using advanced techniques like genome-wide Hi-C and CRISPR interference.
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Autophagy in cancer development, immune evasion, and drug resistance.

Drug Resist Updat

January 2025

Life Sciences Institute and Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, USA. Electronic address:

Article Synopsis
  • Autophagy is a cellular process that breaks down and recycles components, playing a crucial role in maintaining cell health, but its disruption can lead to diseases like cancer.
  • In cancer, autophagy has a dual role; it can act as a tumor suppressor in early stages but may promote tumor growth later, influenced by genetic and environmental factors.
  • Targeting autophagy offers a promising approach to overcome chemoresistance in cancer treatment, but this is complicated due to its ability to both help and harm cancer cells, necessitating careful consideration in therapy strategies.
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: Doxorubicin (DOX) is commonly used as a chemotherapeutic agent for the treatment of breast cancer. Nonetheless, its systemic delivery via intravenous injection and toxicity towards healthy tissues commonly result in a broad range of detrimental side effects. Breast cancer severity was previously shown to be correlated with TRPC1 channel expression that conferred upon it enhanced vulnerability to pulsed electromagnetic field (PEMF) therapy.

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Incorporating β-glucan-rich oat bran (OB) can attenuate postprandial glycemic response (PPGR) in solid foods, but its effect in liquid matrices is unclear. This study investigated the ability of differently processed low-dose-β-glucan-containing beverages to lower PPGR, and the mechanisms of action. Twenty participants consumed five malt beverages made from cocoa powder: intact OB (Intact), OB treated with enzymatic hydrolysis (EnzymA, EnzymB) or extrusion (Extr), or no OB (Ctrl).

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Background: The cure for patients with primary hyperaldosteronism (PHA) secondary to solitary adrenal adenoma is adrenalectomy. We investigated the impact of size of Conns' tumour on hypertension resolution in a multi-ethnic South East Asian Cohort.

Methods: Retrospective cohort study of patients who underwent surgery for PHA between January 2010 to December 2022 was performed.

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Sample loading in gel electrophoresis using adapted 3D printers.

Anal Biochem

February 2025

Laboratory for Optics and Applied Mechanics, Department of Mechanical & Aerospace Engineering, Monash University, Clayton, Victoria, 3800, Australia. Electronic address:

In gel electrophoresis, samples that are dispensed too high above or too low into the wells result in sub-optimal outcomes. Here, an adapted 3D printer liquid handler equipped with an optical sensor was found to attain vertical sample delivery positionings at a standard deviation over mean ratio of 0.008.

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Chemical Synthesis and Multihybridization of Small-Sized Hollow Mesoporous Organosilica Nanoparticles Toward Advanced Theranostics.

Acc Chem Res

December 2024

State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University, Nanjing 211198, China.

Article Synopsis
  • * Incorporating organic moieties into these nanoparticles creates mesoporous organosilica nanoparticles (MONs), which provide better biocompatibility, stimuli-responsive properties, and improved therapeutic effects.
  • * Recent research has concentrated on hollow-structured MONs (HMONs), particularly smaller sub-50 nm variants, which show advantages in drug delivery, but the synthesis and structural regulation of these small HMONs remain poorly understood.
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Resistance to immunomodulatory drugs in multiple myeloma: the cereblon pathway and beyond.

Haematologica

November 2024

Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore; Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore; Division of Haematology, Department of Haematology-Oncology, National University Cancer Institute, Singapore (NCIS), National University Health System, 119228.

Acquired resistance to immunomodulatory drugs (IMiDs) remains a significant unmet need in the treatment landscape of multiple myeloma (MM). CRBN pathway-dependent mechanisms are known to be vital contributors to IMiD resistance; however, they may account for only a small proportion. Recent research has unveiled additional mechanisms of acquired IMiD resistance that are independent of the CRBN pathway.

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The class-II transactivator (CIITA) is the master regulator of MHC class-II gene expression and hence the adaptive immune response. Three cell type-specific promoters (pI, pIII, and pIV) are involved in the regulation of CIITA expression, which can be induced by IFN-γ in non-immune cells. While key regulatory elements have been identified within these promoters, our understanding of the transcription factors regulating CIITA expression is incomplete.

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