Publications by authors named "Ju Won Kim"

Background: The emergence and spread of HIV drug-resistant strains present a major barrier to effective lifelong Antiretroviral Therapy (ART). The anticipated rise in long-acting subcutaneous lenacapavir (LEN) use, along with the increased risk of transmitted resistance and Pre-Exposure Prophylaxis (PrEP)-associated resistance, underscores the urgent need for advanced genotyping methods to enhance clinical care and prevention strategies.

Methods: We developed the Portable HIV Genotyping (PHG) platform which combines cost-effective next-generation sequencing with cloud computing to screen for resistance to 28 antiretroviral drugs across five major classes, including LEN.

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Receptor-interacting protein kinase 3 (RIPK3), a key regulator of necroptosis, is modulated by ubiquitination through various E3 ligases and deubiquitinases. However, the effects of different polyubiquitination processes on RIPK3 and necroptosis remain unclear. Using a proteomic approach, we identify SMAD Ubiquitination Regulatory Factor 1 (SMURF1) and Ubiquitin-specific peptidase 5 (USP5) as crucial regulators of RIPK3 within the necrosome during necroptosis.

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Polydeoxyribonucleotide (PDRN) is a tissue regeneration substance that resembles human DNA and is present in mammalian cells. It stimulates physiological regeneration and metabolic activity, and the effects of PDRN are attributed to the activation of Adenosine A2A receptors (ADORA2A). Several previous studies have demonstrated that PDRN activates ADORA2A, which has been shown with various models including rat fibroblasts, human umbilical vein endothelial cells (HUVECs), and the experimental autoimmune uveitis (EAU) model, resulting in the upregulation of angiogenesis and growth factor.

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Introduction: Alzheimer's disease (AD) has significant public health concerns in the aging society. AD can compromise brain function and lead to severe neurological abnormalities associated with dementia. The human Apolipoprotein E (ApoE4) gene is a strong risk factor for AD.

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Background: Chemotherapy-induced anorexia and cachexia are significant challenges for patients with biliary tract cancer (BTC) and pancreatic ductal adenocarcinoma (PDAC). Megestrol acetate (MA), used to manage anorexia, has side effects and may trigger prescription cascades in cancer treatment. This study analyzed MA prescription trends and associated effects in BTC or PDAC patients.

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Background: Cyclin-dependent kinase (CDK) 4/6 inhibitors have remarkably improved the survival outcome in hormone-receptor-positive (HR+)/human epidermal growth factor-2-negative (HER2-) metastatic breast cancer (mBC). Although PALOMA-2 has met its primary outcome, overall survival (OS) was relatively shorter compared to ribociclib and abemaciclib. In Korea, use of palbociclib + aromatase inhibitor (AI) + gonadotropin-releasing hormone agonist (GnRHa) in premenopausal women is limited, and bilateral salpingo-oophorectomy (BSO) is necessary before treatment.

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Introduction: Atezolizumab plus bevacizumab is a commonly used first-line regimen for advanced hepatocellular carcinoma (HCC) treatment owing to its superior outcomes compared to sorafenib. However, optimal subsequent treatment options for patients with HCC who progressed on first-line atezolizumab plus bevacizumab remain unclear.

Methods: This multinational, multi-institutional, retrospective study included patients with HCC from 22 centers in five Asia-Pacific countries who were treated with first-line atezolizumab plus bevacizumab, which was discontinued for any reason.

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Olive flounder () is a commercially important fish species in Japan, China, and the Republic of Korea. Despite numerous attempts to improve productivity, there have been no studies of in vitro germline stem cell (GSC) culture in this species. Here, olive flounder testicular and ovarian cell lines (OFT and OFO, respectively) were established and characterized.

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Biliary tract cancer (BTC), also known as cholangiocarcinoma, is a relatively rare type of cancer with a poor prognosis. Despite the combination of chemotherapy and advances in targeted therapy, which have potentially improved the prognosis of patients with BTC, research on outcomes remains inadequate. The present study thus analyzed the survival trends of patients with BTC.

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Purpose: This study aimed to develop a machine learning-based approach to identify prognostic gene signatures for early-stage triple-negative breast cancer (TNBC) using next-generation sequencing data from Asian populations.

Materials And Methods: We utilized next-generation sequencing data to analyze gene expression profiles and identify potential biomarkers. Our methodology involved integrating various machine learning techniques, including feature selection and model optimization.

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Background: The transcriptomic profile of cellular senescence is strongly associated with distinct cell types, the specific stressors triggering senescence, and temporal progression through senescence stages. This implies the potential necessity of conducting separate investigations for each cell type and a stressor inducing senescence. To elucidate the molecular mechanism that drives endoplasmic reticulum (ER) stress-induced cellular senescence in MCF-7 breast cancer cells, with a particular emphasis on the ATF6α branch of the unfolded protein response.

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Article Synopsis
  • Breast cancer (BC) exhibits complex genomic changes, but the impact of age and ethnicity on its molecular variations is still not well understood.
  • This study analyzed 843 BC patients in the K-MASTER program, focusing on differences between age groups and comparing findings with larger genomic databases to uncover ethnic disparities.
  • Key results included a higher frequency of specific mutations in older patients and significant differences in cancer subtypes across ethnic groups, leading to the development of a model to predict responses to platinum-based chemotherapy based on unique molecular signatures.
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Background: Taxanes are effective chemotherapy drugs for breast cancer care, but adverse effects pose a significant challenge in cancer treatment. Taxane-induced fluid retention and lower-extremity edema are two of the important dose-limiting toxicity and result in decreased quality of life (QoL). However, there is no standard of care to alleviate the symptoms.

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  • EGFR-variant non-small cell lung cancer (NSCLC) is prone to central nervous system (CNS) metastases, making new treatment options like lazertinib important for improving patient outcomes.
  • This study was a phase 2 trial in South Korea involving patients with NSCLC and existing brain metastases who had not responded to first or second-generation EGFR inhibitors, assessing lazertinib's effectiveness.
  • Results showed a 55% intracranial objective response rate (iORR) for patients, with higher responses in those with specific genetic markers, indicating that lazertinib could be a promising option for treating CNS metastases in these patients.
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Background: Advancements in the diagnosis, treatment, and surveillance of castration-resistant prostate cancer (CRPC) have progressed considerably, but a new biomarker that combines existing clinical and pathological data could be useful for a more precise diagnosis and prognosis. Some investigations have found that extracellular vesicle (EV)-derived miRNAs play crucial roles in various types of malignant tumors. The objective of this study was to explore EV miRNA and identify its biologic function as a biomarker for the diagnosis and prognosis of CRPC.

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Prohibitin 1 (PHB1) is ubiquitously expressed in multiple compartments within cells and is involved in the cell cycle, cell signaling, apoptosis, transcriptional regulation, and mitochondrial biogenesis at the cellular level and in the inflammation-associated and immunological functions of B and T lymphocytes. PHB1 is an important protein that performs antioxidant regulation and immune functions inside and outside cells but has not been sufficiently studied in teleost fish. Our study aimed to elucidate the functional properties and gain new insights into the biological processes and immune system of red seabream (Pagrus major), a commercially important fish cultured in South Korea and East Asia.

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  • Tension members are crucial for the stability and strength of various structures, and their use has expanded into areas like subsea and aerospace applications.
  • Continuous monitoring of these tension members is essential due to risks of abnormal tensile strength that could lead to structural failure.
  • This study introduces a yoke-type elasto-magnetic sensor for effective nondestructive tension monitoring, demonstrating its capability to accurately estimate tension force through measured induced voltage signals.
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  • The study focuses on the EFEMP2 protein in the olive flounder, which plays a key role in connective tissue development and tumor growth.
  • Researchers characterized the cDNA of this protein, finding similarities to other fish species and identifying its highest expression in tissues like the heart and ovary.
  • The disruption of EFEMP2 using CRISPR/Cas9 showed that it is involved in antiviral responses, as knockout cells had increased levels of viral and immune-related gene expressions after a viral infection.
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A Gram-stain-positive, aerobic bacterium, designated as YPD9-1, was isolated from the gut contents of a spotty belly greenling, , collected near Dokdo island, South Korea. The rod-shaped cells were oxidase-positive, and catalase-negative. The major cellular fatty acids were anteiso-C, iso-C, C, iso-C and iso-C.

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Urethane acrylate (UA) was synthesized from various di-polyols, such as poly(tetrahydrofuran) (PTMG, Mn = 1000), poly(ethylene glycol) (PEG, Mn = 1000), and poly(propylene glycol) (PPG, Mn = 1000), for use as a polymer binder for paint. Polymethyl methacrylate (PMMA) and UA were blended to form an acrylic resin with high transmittance and stress-strain curve. When PMMA was blended with UA, a network structure was formed due to physical entanglement between the two polymers, increasing the mechanical properties.

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  • Triple-negative breast cancer (TNBC) has a worse prognosis than other breast cancer types and lacks reliable biomarkers to predict patient outcomes.
  • This study analyzed gene expressions from 184 TNBC patient samples using RNA sequencing, identifying a 10-gene signature that accurately predicts invasive disease-free survival.
  • The 10-gene signature shows strong sensitivity and specificity, and it may enhance personalized treatment approaches for TNBC patients by serving as a novel prognostic biomarker.
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Myostatin (MSTN, also known as growth differentiation factor-8 (GDF-8)), a member of the transforming growth factor β (TGF-β) superfamily, functions as a negative regulator of skeletal muscle development and growth. However, it is also expressed in a wide range of tissues in fish and thus may have more diverse roles in this group than in mammals. In this study, we assessed the genome-wide transcriptional expression pattern associated with the CRISPR/Cas9-mutated MSTN gene in the olive flounder (Paralichthys olivaceus) in association with changes in cell proliferation and transportation processes.

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  • Paclitaxel is a second-line treatment for advanced gastric cancer (AGC), but there are currently no biomarkers to predict which patients will benefit from it.
  • This study analyzed data from 288 AGC patients treated with paclitaxel from 2017-2022 using various machine learning models to create a prediction system for patient outcomes.
  • The best-performing model, an artificial neural network with genetic embedding, showed improved predictive accuracy, helping to identify patients who might achieve better progression-free survival with paclitaxel therapy.
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  • This study investigates the effectiveness of electric massage chairs (EMC) in reducing chemotherapy-induced nausea and vomiting (CINV) in cancer patients, as these side effects can significantly impact their quality of life.* -
  • A randomized trial involved 59 solid cancer patients, who were treated in either a standard bed or an EMC during chemotherapy, with questionnaires assessing CINV and quality of life.* -
  • Results showed no significant difference in overall CINV scores between the two groups, but EMC may still be beneficial for specific high-risk subgroups, suggesting potential value in improving quality of life for those patients.*
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