Publications by authors named "Jin Nyoung Ho"

Purpose: Bladder cancer is a common genitourinary malignant disease worldwide. Dasatinib is a small molecule inhibitor of Src family kinases. We investigated the anticancer effect and putative molecular mechanisms of dasatinib on T24 and cisplatin-resistant T24R2 human bladder cancer cells.

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Despite the advantages of microfluidic system in drug screening, vascular systems responsible for the transport of drugs and nutrients have been hardly considered in the microfluidic-based chemotherapeutic screening. Considering the physiological characteristics of highly vascularized urinary tumors, we here investigated the chemotherapeutic response of bladder tumor cells using a vascularized tumor on a chip. The microfluidic chip was designed to have open-top region for tumor sample introduction and hydrophilic rail for spontaneous hydrogel patterning, which contributed to the construction of tumor-hydrogel-endothelium interfaces in a spatiotemporal on-demand manner.

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CUDC‑907 is a novel inhibitor of phosphoinositide 3‑kinase and histone deacetylase. It exerts anticancer activities by inducing apoptosis and inhibiting the growth and metastases of various tumors. However, the anticancer effects of CUDC‑907 on bladder cancer have not been previously reported.

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Purpose: The aim of this study was to evaluate the effectiveness of the Prostate Health Index (PHI) and prostate multi-parametric magnetic resonance imaging (mpMRI) in predicting prostate cancer (PCa) and clinically significant prostate cancer (csPCa) during initial prostate biopsy.

Materials And Methods: In total, 343 patients underwent initial prostate biopsy and were screened by use of PHI and prostate-specific antigen (PSA) levels between April 2019 and July 2021. A subgroup of 232 patients also underwent prostate mpMRI.

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Objectives: To evaluate the usefulness of a novel acoustic uroflowmetry- (UFM-) based mobile application (app) voiding diary (VD) focusing on the (1) compliance and (2) correlation with a conventional paper-based VD.

Materials And Methods: A total of 78 patients were included between December 2019 and June 2020, and a subsequent review of all data was performed. The analyzed data were as follows: (1) survey of convenience/satisfaction/preference comparing the two methods, (2) compliance regarding the completeness of both methods, and (3) correlation of each metric (24-hour urine volume, nocturnal urine volume, nocturnal polyuria index, total number of voids, number of daytime voids, number of nocturnal voids, and maximal bladder capacity) between the two methods.

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To investigate potential markers of the prostate cancer (PCa) Gleason score (GS), genetic arrays in 841 PCa patients were conducted followed by functional validation in PCa cell lines. A total of 841 PCa patients who received radical prostatectomy (RP) from November 2003 to July 2019 were enrolled. HumanExome BeadChip 12v1-1 (Illumina, Inc.

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This study aimed to investigate the effects of the gallic acid-enriched fermented chestnut inner shell extract (FCCE) by on a high fat diet (HFD)-induced obesity and hepatic steatosis mouse model. Mice feeding FCCE exhibited reduced body weight gain compared to those in the HFD-fed group, and showed lower abdominal fat pad weight including epididymal, retroperitoneal, and mesenteric adipose tissue. Further, FCCE administration decreased adipocyte size by suppressing adipogenic factors such as peroxisome proliferator activated receptor γ and CCAAT/ enhancer-binding protein α, and lipogenic factors such as sterol regulatory element-binding protein-1c, fatty acid synthase, and stearoyl CoA desaturase-1.

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As standard second-line regimen has not been established for patients who are refractory to or relapse with cisplatin-based chemotherapy, an effective class of novel chemotherapeutic agents is needed for cisplatin-resistant bladder cancer. Recent publications reported that MutT homolog 1 (MTH1) inhibitors suppress tumor growth and induce impressive therapeutic responses in a variety of human cancer cells. Few studies investigated the cytotoxic effects of MTH1 inhibitors in human bladder cancer.

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Motesanib (AMG 706) is a small organic molecule that acts as a multi‑targeted tyrosine kinase inhibitor of VEGF, PDGF and stem cell factor receptor. It exhibits a potent antitumor effect in vitro and in vivo. To investigate the anticancer effect and possible mechanisms of motesanib in cisplatin‑resistant human bladder cancer cells (T24R2), T24R2 cells were treated with motesanib (50 µM) with or without cisplatin (2.

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Cisplatin chemotherapy is the standard treatment for metastatic urothelial carcinoma. Although there are second-line chemotherapeutic agents approved by the U.S.

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To examine the anticancer effects of S-allyl-L-cysteine (SAC) in human bladder cancer cells and to identify possible molecular mechanisms, bladder cancer cell lines (HTB5, HTB9, JON, UMUC14, T24, and cisplatin resistant-T24R2) were incubated with SAC, and cell proliferation was measured using the Cell Counting Kit-8 assay and clonogenic assay. Cell cycle and apoptosis were evaluated by flow cytometry. Expression levels of apoptosis- and cell cycle-associated proteins were analyzed by western blotting.

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Background: Genetic variation which related with progression to castration-resistant prostate cancer (CRPC) during androgen-deprivation therapy (ADT) has not been elucidated in patients with metastatic prostate cancer (mPCa). Therefore, we assessed the association between genetic variats in mPCa and progession to CRPC.

Results: Analysis of exome genotypes revealed that 42 SNPs were significantly associated with mPCa.

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Purpose: To investigate the genetic risk score (GRS) from a large-scale exome-wide association study as a tool of prediction for biochemical recurrence (BCR) after radical prostatectomy (RP) in prostate cancer (PCa).

Results: The 16 SNPs were selected as significant predictors of BCR. The GRS in men experiencing BCR was -1.

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This study aimed to examine the anti-diabetic effect of germinated waxy black rice (GWBR) using streptozotocin (STZ)-induced diabetic rats. In the diabetic rats, GWBR supplementation for 8 weeks reduced plasma blood glucose concentrations, improved glucose clearance and prevented diabetes-induced weight loss. Rats with STZ-induced diabetes who received GWBR supplementation exhibited decreased expression of sodium-dependent glucose transporter 1 (SGLT1) and glucose transporter (GLUT) 2 genes and proteins in the small intestine via decreases in hepatocyte nuclear factor (HNF)-1α, HNF-1β, and HNF-4α, transcriptional factors that are involved in the regulation of SGLT1 and GLUT2, compared with the rats with STZ-induced diabetes that did not receive GWBR supplements.

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Docetaxel-based chemotherapy is the standard treatment for metastatic castration-resistant prostate cancer (CRPC). However, a number of patients with metastatic CRPC are refractory to docetaxel or develop docetaxel resistance. The underlying molecular mechanisms of docetaxel resistance remain unclear, which is a significant burden to the management of metastatic prostate cancer.

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Purpose: To investigate exome-wide genetic variants associated with prostate cancer (PCa) in Koreans and evaluate the discriminative ability by the genetic risk score (GRS).

Patients And Methods: We prospectively recruited 1,001 PCa cases from a tertiary hospital and conducted a case-control study including 2,641 healthy men (Stage I). Participants were analyzed using HumanExome BeadChip.

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The aim of this study was to investigate the anti-obesity effects of germinated waxy black rice (GWBR) extract in 3T3-L1 adipocytes. The inhibitory effect of GWBR extract against adipocyte differentiation was evaluated using Oil Red O staining and glycerol-3-phosphate dehydrogenase (GPDH) assay. GWBR extract inhibited adipocyte differentiation, but was not found to elicit any cytotoxicity.

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Background: The significance of focal positive margins (FPMs) after radical prostatectomy (RP) is unclear. Our objective was to investigate the prognostic value of FPMs in patients undergoing RP.

Materials And Methods: The data were analyzed retrospectively for 1733 patients with clinically localized prostate cancer who had undergone RP at our institution from December 2003 to March 2014 without neoadjuvant or adjuvant therapy.

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This study was performed to investigate the antiobesity effect of germinated waxy black rice (GWBR) in high-fat diet (HFD)-induced obese mice. The mice were divided into a normal diet (ND) group, HFD group, and 2 test groups for 8 weeks: 2.5% GWBR-supplemented (GWBR-2.

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Purpose: The mechanism of resistance to cisplatin during treatment of bladder cancer (BC) has been a subject of intense investigation in clinical research. This study aims to identify candidate genes associated with resistance to cisplatin, in order to understand the resistance mechanism of BC cells to the drug, by combining the use of microarray profiling, quantitative reverse transcription-polymerase chain reaction (RT-PCR), and Western blot analyses.

Materials And Methods: The cisplatin sensitive human BC cell line (T24) and the cisplatin resistant BC cell line, T24R2, were used for microarray analysis to determine the differential expression of genes that are significant in cisplatin resistance.

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Cancer cells that survive radiotherapy often display enhanced invasiveness and resistance to death stimuli. Previous findings have suggested that ionizing radiation (IR) induces such undesirable effects by stimulating the STAT3/Bcl-XL pathway. To identify novel cellular components that mediate these actions of IR, we irradiated lung cancer cells with sublethal doses of y-rays and screened for the induction of IR-responsive genes by microarray analysis.

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In the present study, we aimed to investigate the anticancer properties of Theracurmin®, a novel form of the yellow curry pigment curcumin, as well as explore the molecular mechanisms of the potential anticancer effects of Theracurmin® on human prostate cancer and bladder cancer cells in vitro. The proliferation of cancer cells was examined by using the Cell Counting Kit-8. The clonogenic growth potential was determined by clonogenic assay.

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Objectives: Genetic variations among patients with prostate cancer (PCa) who underwent radical prostatectomies were evaluated to predict advanced stage above T3 using an exome single nucleotide polymorphism (SNP) chip array.

Materials And Methods: We collected data of genetic SNP variants from 820 patients with PCa who underwent radical prostatectomy (RP) using a custom HumanExome BeadChip v1.0 (Illumina Inc.

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Purposes: Genetic variations among prostate cancer patients who underwent radical prostatectomies were evaluated to predict biochemical recurrence, and used to develop a clinical-genetic model that combines data on clinicopathological factors of prostate cancer and individual genetic variations.

Materials And Methods: We genotyped 242,186 SNPs on a custom HumanExome BeadChip v1.0 (Illuminam Inc.

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