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Kwon CH, Seo HI, Kim DU, Han SY, Kim S, Lee NK, Hong SB, Ahn JH, Park YM, Noh BG. Survival benefit of concurrent chemoradiotherapy for advanced ampulla of Vater cancer. World J Clin Cases 2024; 12:267-275. [PMID: 38313654 PMCID: PMC10835681 DOI: 10.12998/wjcc.v12.i2.267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/07/2023] [Accepted: 12/27/2023] [Indexed: 01/11/2024] Open
Abstract
BACKGROUND Currently, there is no standard adjuvant therapy for patients with resected ampulla of Vater (AoV) cancer. AIM To evaluate the effectiveness of adjuvant concurrent chemoradiotherapy (CCRT) in patients with advanced AoV cancer who underwent curative resection. METHODS This single-centered, retrospective study included 29 patients with advanced AoV cancer who underwent pancreaticoduodenectomy between 2006 and 2018. The impact of CCRT on advanced AoV cancer was analyzed. RESULTS The 1-, 3-, and 5-yr recurrence-free survival (RFS) rates for patients with advanced AoV cancer were 82.8%, 48.3%, and 40.8%, respectively, and the overall survival (OS) rates were 89.7%, 62.1%, and 51.7%, respectively. Lymphovascular invasion was found to be a significant risk factor for RFS and OS in patients with advanced AoV cancer in the univariate analysis, whereas T stage and lymph node metastasis were significantly associated with OS in the multivariate analysis. Compared to the patients who did not receive adjuvant CCRT, those who received adjuvant CCRT did not show statistically significant improvements in the RFS and OS, although they had a significantly lower average age and significantly higher platelet-to-lymphocyte ratio. CONCLUSION Adjuvant CCRT did not improve survival outcomes in patients with advanced AoV cancer. These findings contribute to existing knowledge on the effectiveness of CCRT in this patient population and provide important insights for clinical decision-making.
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Affiliation(s)
- Chae Hwa Kwon
- BioMedical Research Institute, Pusan National University Hospital, Busan 49241, South Korea
| | - Hyung Il Seo
- Department of Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan 49241, South Korea
| | - Dong Uk Kim
- Department of Internal Medicine, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan 49241, South Korea
| | - Sung Yong Han
- Department of Internal Medicine, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan 49241, South Korea
| | - Suk Kim
- Department of Radiology, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan 49241, South Korea
| | - Nam Kyung Lee
- Department of Radiology, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan 49241, South Korea
| | - Seung Baek Hong
- Department of Radiology, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan 49241, South Korea
| | - Ji Hyun Ahn
- Department of Pathology and Biomedical Research Institute, Pusan National University Hospital, Busan 49241, South Korea
| | - Young Mok Park
- Department of Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan 49241, South Korea
| | - Byeong Gwan Noh
- Department of Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan 49241, South Korea
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Kwon CH, Ahn JH, Seo HI, Kim DU, Han SY, Kim S, Lee NK, Hong SB, Park YM, Noh BG. Clinical impact of ampulla of Vater cancer subtype classification based on immunohistochemical staining. World J Surg Oncol 2024; 22:5. [PMID: 38167037 PMCID: PMC10763163 DOI: 10.1186/s12957-023-03289-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 12/26/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND The histological subtype is an important prognostic factor for ampulla of Vater (AoV) cancer. This study proposes a classification system for the histological subtyping of AoV cancer based on immunohistochemical (IHC) staining and its prognostic significance. METHODS Seventy-five AoV cancers were analyzed for cytokeratin 7 (CK7), CK20, and causal-type homeobox transcription factor 2 (CDX2) expression by IHC staining. We differentiated the subtypes (INT, intestinal; PB, pancreatobiliary; MIX, mixed; NOS, not otherwise specified) into classification I: CK7/CK20, classification II: CK7/CK20 or CDX2, classification III: CK7/CDX2 and examined their associations with clinicopathological factors. RESULTS Classifications I, II, and III subtypes were INT (7, 10, and 10 cases), PB (43, 37, and 38 cases), MIX (13, 19, and 18 cases), and NOS (12, 9, and 9 cases). Significant differences in disease-free survival among the subtypes were observed in classifications II and III using CDX2; the PB and NOS subtype exhibited shorter survival time compared with INT subtype. In classification III, an association was revealed between advanced T/N stage, poor differentiation, lymphovascular invasion (LVI), the PB and NOS subtypes, and recurrence risk. In classification III, the subtypes differed significantly in T/N stage and LVI. Patients with the PB subtype had advanced T and N stages and a higher incidence of LVI. CONCLUSIONS Classification using CDX2 revealed subtypes with distinct prognostic significance. Combining CK7 and CDX2 or adding CDX2 to CK7/CK20 is useful for distinguishing subtypes, predicting disease outcomes, and impacting the clinical management of patients with AoV cancer.
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Affiliation(s)
- Chae Hwa Kwon
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Ji Hyun Ahn
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
- Department of Pathology, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Hyung Il Seo
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea.
- Department of Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-Ro, Seo-Gu, Busan, 49241, South Korea.
| | - Dong Uk Kim
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
- Department of Internal Medicine, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Sung Yong Han
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
- Department of Internal Medicine, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Suk Kim
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
- Department of Radiology, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Nam Kyung Lee
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
- Department of Radiology, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Seung Baek Hong
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
- Department of Radiology, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Young Mok Park
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
- Department of Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-Ro, Seo-Gu, Busan, 49241, South Korea
| | - Byeong Gwan Noh
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
- Department of Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-Ro, Seo-Gu, Busan, 49241, South Korea
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Kwon CH, Seo HI, Kim DU, Han SY, Kim S, Lee NK, Hong SB, Ahn JH, Park YM, Noh BG. Clinical significance of C-reactive protein-to-prealbumin ratio in predicting early recurrence in resectable pancreatic cancer. Korean J Clin Oncol 2023; 19:11-17. [PMID: 37449394 DOI: 10.14216/kjco.23003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 06/18/2023] [Indexed: 07/18/2023]
Abstract
PURPOSE Resectable pancreatic ductal adenocarcinoma (PDAC) has a high risk of recurrence after curative resection; despite this, the preoperative risk factors for predicting early recurrence remain unclear. This study therefore aimed to identify preoperative inflammation and nutrition factors associated with early recurrence of resectable PDAC. METHODS From March 2021 to November 2021, a total of 20 patients who underwent curative resection for PDAC were enrolled in this study. We evaluated the risk factors for early recurrence within 1 year by univariate and multivariate analyses using Cox hazard proportional regression. The cutoff values for predicting recurrence were examined using receiver operating characteristic (ROC) curves. RESULTS In our univariate and multivariate analyses, C-reactive protein (CRP), CRP-albumin ratio, and CRP-prealbumin ratio, as well as sex and age, were significant independent prognostic factors for early recurrence in PDAC. However, known inflammatory factors (neutrophil-to-lymphocyte and platelet-to-lymphocyte ratios), nutritional factors (albumin, prealbumin, ferritin, vitamin D), and inflammatory-nutritional factors (Glasgow Prognostic Score, modified Glasgow Prognostic Score, albumin-bilirubin) showed no association with early recurrence. In addition, using cutoff values by ROC curve analysis, a high preoperative CRP level of >5 mg/L, as well as high CRP-to-albumin (>5.3) and CRP-to-prealbumin (>1.3) ratios showed no prognostic value. CONCLUSION Our results showed that inflammatory and perioperative nutritional factors, especially CRP-to-prealbumin ratio, have significant associations with early recurrence after curative resection in resectable PDAC. Therefore, for such patients, a cautious approach is needed when inflammation and poor nutritional status are present.
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Affiliation(s)
- Chae Hwa Kwon
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Hyung Il Seo
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Department of Surgery, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea
| | - Dong Uk Kim
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Department of Internal Medicine, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea
| | - Sung Yong Han
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Department of Internal Medicine, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea
| | - Suk Kim
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Department of Radiology, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea
| | - Nam Kyung Lee
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Department of Radiology, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea
| | - Seung Baek Hong
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Department of Radiology, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea
| | - Ji Hyun Ahn
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Department of Pathology, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea
| | - Young Mok Park
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Department of Surgery, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea
| | - Byung Gwan Noh
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Department of Surgery, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea
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Kwon CH, Seo HI, Kim DU, Han SY, Kim S, Lee SJ, Jeon DY. HER2 status based on breast cancer guidelines as a useful prognostic marker of T2 gallbladder cancer. Eur J Surg Oncol 2023; 49:392-398. [PMID: 36369228 DOI: 10.1016/j.ejso.2022.10.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/23/2022] [Accepted: 10/28/2022] [Indexed: 11/05/2022]
Abstract
INTRODUCTION T2 gallbladder cancer (GBC) is the only stage showing a survival benefit after complete surgical resection, but recurrence rates remain high. Although human epidermal growth factor receptor 2 (HER2) has emerged as a therapeutic target, its role in T2 GBC remains unclear. This study investigated the status and prognostic impact of HER2 expression on T2 GBC. MATERIALS AND METHODS HER2 expression and amplification were detected by immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH), respectively, in 90 patients with T2 GBC who underwent radical cholecystectomy. We evaluated HER2 status according to the breast and gastric cancer guidelines and analyzed the effect of relevant prognostic factors on survival. RESULTS HER2 positive status was observed in 11.11% (10/90) and 8.89% (8/90) of cases based on gastric and breast cancer guidelines, respectively. Poor differentiation and a higher level of perineural invasion were independent prognostic factors of disease-free survival (DFS). Old age, male sex, presence of lymph node metastasis, poor differentiation, high levels of perineural invasion, and HER2 positivity based on breast cancer guidelines were identified as independent prognostic factors of overall survival (OS). Patients with HER2-positive T2 GBC according to breast cancer guidelines had worse OS. CONCLUSIONS HER2 positivity based on breast- but not gastric-cancer guidelines was associated with poorer survival. These results provide a criterion for the evaluation of HER2 and a rationale for therapeutic strategies targeting HER2 in T2 GBC.
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Affiliation(s)
- Chae Hwa Kwon
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Hyung Il Seo
- Department of Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea.
| | - Dong Uk Kim
- Department of Internal Medicine, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Sung Yong Han
- Department of Internal Medicine, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Suk Kim
- Department of Radiology, Pusan National University School of Medicine, Busan, South Korea
| | - So Jeong Lee
- Department of Pathology, Seegene Medical Foundation, Busan, South Korea
| | - Da Ye Jeon
- Department of Internal Medicine, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
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Kim S, Kim GH, Park SJ, Kwon CH, I H, Lee MW, Lee BE. Exosomal MicroRNA Analyses in Esophageal Squamous Cell Carcinoma Cell Lines. J Clin Med 2022; 11:jcm11154426. [PMID: 35956043 PMCID: PMC9369365 DOI: 10.3390/jcm11154426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/23/2022] [Accepted: 07/26/2022] [Indexed: 11/17/2022] Open
Abstract
Exosomal miRNAs have been studied in various cancers as minimally invasive biomarkers. This study aimed to investigate the potential of exosomal microRNAs (miRNAs) as biomarkers for esophageal squamous cell carcinoma (ESCC). Exosomes were isolated from cultures of esophageal epithelial cell and ESCC cell lines using ExoDisc, and exosomal miRNAs were detected via miRNA sequencing. Of the differentially expressed 14 miRNAs, the top 2 up-regulated miRNAs (miR-205-5p and miR-429) and top 2 down-regulated miRNAs (miR-375-3p and miR-483-3p) were selected as ESCC target miRNAs. Four selected exosomal miRNAs were validated in the plasma of 20 healthy controls (HCs) and 40 ESCC patients via quantitative reverse transcription-polymerase chain reaction. The expression of plasma exosomal miR-205-5p and miR-429 significantly increased, while that of plasma exosomal miR-375-3p was significantly reduced in ESCC patients compared to that in HCs. At cut-off values of 5.04, 2.564, and 0.136, the sensitivity and specificity for the diagnosis of ESCC were 72.5% and 70.0% for miR-205-5p, 60.0% and 60.0% for miR-429, and 65.0% and 65.0% for miR-375-3p, respectively. Based on the exosomal miRNAs identified in ESCC cell lines, our study demonstrated that plasma exosomal miR-205-5p, miR-429, and miR-375-3p could serve as potential biomarkers for ESCC diagnosis.
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Affiliation(s)
- Sora Kim
- Department of Convergence Medical Sciences, Graduate School of Medicine, Pusan National University, Yangsan 50612, Korea;
| | - Gwang Ha Kim
- Department of Internal Medicine, Pusan National University College of Medicine, Busan 49241, Korea; (M.W.L.); (B.E.L.)
- Biomedical Research Institute, Pusan National University Hospital, Busan 49241, Korea; (S.J.P.); (C.H.K.)
- Correspondence: ; Tel.: +82-51-2407869; Fax: +82-51-2448180
| | - Su Jin Park
- Biomedical Research Institute, Pusan National University Hospital, Busan 49241, Korea; (S.J.P.); (C.H.K.)
| | - Chae Hwa Kwon
- Biomedical Research Institute, Pusan National University Hospital, Busan 49241, Korea; (S.J.P.); (C.H.K.)
| | - Hoseok I
- Department of Thoracic Surgery, Pusan National University College of Medicine, Busan 49241, Korea;
| | - Moon Won Lee
- Department of Internal Medicine, Pusan National University College of Medicine, Busan 49241, Korea; (M.W.L.); (B.E.L.)
| | - Bong Eun Lee
- Department of Internal Medicine, Pusan National University College of Medicine, Busan 49241, Korea; (M.W.L.); (B.E.L.)
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Kim M, Kwon CH, Jang MH, Kim JM, Kim EH, Jeon YK, Kim SS, Choi KU, Kim IJ, Park M, Kim BH. Whole-Exome Sequencing in Papillary Microcarcinoma: Potential Early Biomarkers of Lateral Lymph Node Metastasis. Endocrinol Metab (Seoul) 2021; 36:1086-1094. [PMID: 34731936 PMCID: PMC8566127 DOI: 10.3803/enm.2021.1132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 09/01/2021] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Early identification of patients with high-risk papillary thyroid microcarcinoma (PTMC) that is likely to progress has become a critical challenge. We aimed to identify somatic mutations associated with lateral neck lymph node (LN) metastasis (N1b) in patients with PTMC. METHODS Whole-exome sequencing (WES) of 14 PTMCs with no LN metastasis (N0) and 13 N1b PTMCs was performed using primary tumors and matched normal thyroid tissues. RESULTS The mutational burden was comparable in N0 and N1b tumors, as the median number of mutations was 23 (range, 12 to 46) in N0 and 24 (range, 12 to 50) in N1b PTMC (P=0.918). The most frequent mutations were detected in PGS1, SLC4A8, DAAM2, and HELZ in N1b PTMCs alone, and the K158Q mutation in PGS1 (four patients, Fisher's exact test P=0.041) was significantly enriched in N1b PTMCs. Based on pathway analysis, somatic mutations belonging to the receptor tyrosine kinase-RAS and NOTCH pathways were most frequently affected in N1b PTMCs. We identified four mutations that are predicted to be pathogenic in four genes based on Clinvar and Combined Annotation-Dependent Depletion score: BRAF, USH2A, CFTR, and PHIP. A missense mutation in CFTR and a nonsense mutation in PHIP were detected in N1b PTMCs only, although in one case each. BRAF mutation was detected in both N0 and N1b PTMCs. CONCLUSION This first comprehensive WES analysis of the mutational landscape of N0 and N1b PTMCs identified pathogenic genes that affect biological functions associated with the aggressive phenotype of PTMC.
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Affiliation(s)
- Mijin Kim
- Department of Internal Medicine, Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Chae Hwa Kwon
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Min Hee Jang
- Department of Internal Medicine, Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Jeong Mi Kim
- Department of Internal Medicine, Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Eun Heui Kim
- Department of Internal Medicine, Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Yun Kyung Jeon
- Department of Internal Medicine, Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Sang Soo Kim
- Department of Internal Medicine, Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Kyung-Un Choi
- Department of Pathology, Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - In Joo Kim
- Department of Internal Medicine, Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Meeyoung Park
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
- Meeyoung Park Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, 20 Geumo-ro, Mulgeum-eup, Yangsan 50612, Korea Tel: +82-55-360-4735, Fax: +82-55-360-3869, E-mail:
| | - Bo Hyun Kim
- Department of Internal Medicine, Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
- Corresponding authors: Bo Hyun Kim Department of Internal Medicine, Biomedical Research Institute, Pusan National University Hospital, 305 Gudeok-ro, Seo-gu, Busan 49241, Korea Tel: +82-51-240-7236, Fax: +82-51-254-3237, E-mail:
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Lee HJ, Kim GH, Park SJ, Kwon CH, Lee MW, Lee BE, Baek DH, I H. Clinical Significance of TWIST-Positive Circulating Tumor Cells in Patients with Esophageal Squamous Cell Carcinoma. Gut Liver 2021; 15:553-561. [PMID: 33293482 PMCID: PMC8283289 DOI: 10.5009/gnl20194] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 08/25/2020] [Accepted: 09/02/2020] [Indexed: 12/16/2022] Open
Abstract
Background/Aims Unlike other gastrointestinal tract cancers, there are relatively few reports on the clinical significance of circulating tumor cells (CTCs) and TWIST, a marker of epithelial-mesenchymal transition, in patients with esophageal squamous cell carcinoma (ESCC). This study aimed to evaluate the clinical significance of TWIST expression in CTCs in patients with ESCC. Methods Peripheral blood samples for CTC analyses were prospectively obtained from 52 patients with ESCC prior to treatment between September 2017 and September 2019. CTCs were detected using a centrifugal microfluidic system based on a fluid-assisted separation technique, and CTCs positive for TWIST on immunostaining were defined as TWIST (+) CTCs. Results Of the 52 patients with ESCC, CTCs and TWIST (+) CTCs were detected in 44 patients (84.6%) and 39 patients (75.0%), respectively. The CTC and TWIST (+) CTC counts were significantly higher in patients aged >65 years and those who had a large tumor (>3 cm) than in those aged ≤65 years and those who had a small tumor (≤3 cm), respectively. There were no differences in CTC and TWIST (+) CTC counts according to tumor location, histologic grade, or TNM stage. TWIST (+) CTCs were significantly associated with histologic grade; a proportion of TWIST (+) CTCs ≥0.5 was significantly associated with advanced histologic grade. Other clinicopathologic characteristics such as sex, age, tumor location, tumor size, and TNM stages were not significantly associated with TWIST (+) CTCs. Conclusions Our study showed that TWIST (+) CTCs were frequently detected in patients with ESCC, and a high proportion of TWIST (+) CTCs was associated with poor differentiation.
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Affiliation(s)
- Hyun Jung Lee
- Department of Internal Medicine, Pusan National University College of Medicine, Busan, Korea
| | - Gwang Ha Kim
- Department of Internal Medicine, Pusan National University College of Medicine, Busan, Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Su Jin Park
- Department of Internal Medicine, Pusan National University College of Medicine, Busan, Korea.,Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Chae Hwa Kwon
- Biomedical Research Institute, Pusan National University Hospital, Busan, Korea
| | - Moon Won Lee
- Department of Internal Medicine, Pusan National University College of Medicine, Busan, Korea
| | - Bong Eun Lee
- Department of Internal Medicine, Pusan National University College of Medicine, Busan, Korea
| | - Dong Hoon Baek
- Department of Internal Medicine, Pusan National University College of Medicine, Busan, Korea
| | - Hoseok I
- Department of Thoracic Surgery, Pusan National University College of Medicine, Busan, Korea
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Park M, Kwon CH, Ha HK, Han M, Song SH. RNA-Seq identifies condition-specific biological signatures of ischemia-reperfusion injury in the human kidney. BMC Nephrol 2020; 21:398. [PMID: 32977749 PMCID: PMC7517631 DOI: 10.1186/s12882-020-02025-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 08/17/2020] [Indexed: 12/13/2022] Open
Abstract
Background Acute kidney injury (AKI) is defined as a sudden event of kidney failure or kidney damage within a short period. Ischemia-reperfusion injury (IRI) is a critical factor associated with severe AKI and end-stage kidney disease (ESKD). However, the biological mechanisms underlying ischemia and reperfusion are incompletely understood, owing to the complexity of these pathophysiological processes. We aimed to investigate the key biological pathways individually affected by ischemia and reperfusion at the transcriptome level. Results We analyzed the steady-state gene expression pattern of human kidney tissues from normal (pre-ischemia), ischemia, and reperfusion conditions using RNA-sequencing. Conventional differential expression and self-organizing map (SOM) clustering analyses followed by pathway analysis were performed. Differential expression analysis revealed the metabolic pathways dysregulated in ischemia. Cellular assembly, development and migration, and immune response-related pathways were dysregulated in reperfusion. SOM clustering analysis highlighted the ischemia-mediated significant dysregulation in metabolism, apoptosis, and fibrosis-related pathways, while cell growth, migration, and immune response-related pathways were highly dysregulated by reperfusion after ischemia. The expression of pro-apoptotic genes and death receptors was downregulated during ischemia, indicating the existence of a protective mechanism against ischemic injury. Reperfusion induced alterations in the expression of the genes associated with immune response such as inflammasome and antigen representing genes. Further, the genes related to cell growth and migration, such as AKT, KRAS, and those related to Rho signaling, were downregulated, suggestive of injury responses during reperfusion. Semaphorin 4D and plexin B1 levels were also downregulated. Conclusions We show that specific biological pathways were distinctively involved in ischemia and reperfusion during IRI, indicating that condition-specific therapeutic strategies may be imperative to prevent severe kidney damage after IRI in the clinical setting.
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Affiliation(s)
- Meeyoung Park
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Chae Hwa Kwon
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Hong Koo Ha
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Miyeun Han
- Department of Urology, Pusan National University Hospital, Busan, South Korea
| | - Sang Heon Song
- Department of Internal Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea.
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Kim JY, Kim WG, Kwon CH, Park DY. Differences in immune contextures among different molecular subtypes of gastric cancer and their prognostic impact. Gastric Cancer 2019; 22:1164-1175. [PMID: 31152268 DOI: 10.1007/s10120-019-00974-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 05/15/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Gastric cancers have been recently classified in accordance with their molecular characteristics, thus demonstrating the complex nature of cancers and an association with the immune contexture within the tumor microenvironment. This study aimed to investigate the correlation between the molecular subtype and immune contexture of gastric cancers. METHODS The immune contexture, including the type, density, and location of tumor-infiltrating lymphocytes (TILs), of gastric cancer patients was examined and immune subtypes were classified based on it. In particular, PD-L1 expression on tumor cells and TILs and Foxp3+ TILs was assessed in accordance with molecular subtypes. RESULTS High levels of visual TIL estimates and Foxp3+ TILs were markedly associated with increased overall survival (P = 0.001, P < 0.001, separately). Immune subtypes were associated with tumor size, gross type, depth of invasion, lymph node metastatic status, lymphovascular invasion, perineural invasion, and microsatellite instability status. EBV-positive (C1) and MSI (C2) gastric cancers, considered subtypes with better prognosis, were significantly associated with high TIL levels (P < 0.05). In contrast, epithelial-mesenchymal transition (EMT, C3) gastric cancers with poor overall survival displayed low levels of Foxp3+ TILs. Type II tumors (low level of TILs/low PD-L1 expression) displayed a significant correlation with poor overall survival (P = 0.004) and accounted for the highest proportion in the aberrant p53-expressing (C4) gastric cancers. CONCLUSION The molecular subtype of gastric cancers is correlated with the immune subtype, including immune contexture and PD-L1 expression, within the tumor microenvironment.
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Affiliation(s)
- Joo Yeon Kim
- Department of Pathology, Haeundae Paik Hospital, College of Medicine, Inje University, Busan, South Korea
| | - Woo Gyeong Kim
- Department of Pathology, Haeundae Paik Hospital, College of Medicine, Inje University, Busan, South Korea
| | - Chae Hwa Kwon
- BioMedical Research Institute, Pusan National University Hospital, 179, Gudeok-ro, Seo-gu, Busan, 49241, South Korea.
| | - Do Youn Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, Busan, South Korea.
- BioMedical Research Institute, Pusan National University Hospital, 179, Gudeok-ro, Seo-gu, Busan, 49241, South Korea.
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10
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Kwon CH. P5666Impact of metabolic syndrome on the incidence of atrial fibrillation; a nationwide longitudinal cohort study in South Korea. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background/Introduction
There is a lack of studies for the association between the status of metabolic syndrome (MetS) and the risk of atrial fibrillation (AF)
Purpose
The present study aimed to evaluate the impact of MetS status for the incidence of AF in Korean population.
Methods
We used the data obtained from the Korean National Health Insurance Service from 2009 to 2016. This study enrolled a total of 7,830,602 men and women aged between 30 and 69 years without baseline AF who underwent national health examination between January 2009 and December 2009. They were evaluated to determine the risk of AF based on the status of MetS until December 2016. Based on the criteria of the National Cholesterol Education Program Adult Treatment Panel III, the status of MetS was defined into three groups according to number of MetS components: the normal (0), Pre-MetS (1–2), and MetS (3–5).
Results
During follow-up, 20,708 subjects (0.26%) were diagnosed with AF. After multivariable adjustment, the risk of AF was significantly higher according to the status of MetS (hazard ratios [HR] 1.391, 95% confidence interval [CI] 1.322–1.464 in Pre-MetS and HR 1.722, 95% CI 1.621–1.829 in MetS). Among the components of MetS, central obesity (HR 1.316, P<0.001), elevated blood pressure (HR 1.451, P<0.001), and elevated fasting glucose (HR 1.163, P<0.001) were associated with an increased risk of AF.
Conclusion
MetS and pre-MetS are significantly associated with an increased risk of AF in Korean adults. Of the components of MetS, central obesity, elevated blood pressure, and elevated fasting glucose are potent risk factors for the risk of AF in this population.
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Affiliation(s)
- C H Kwon
- Konkuk University Hospital, Internal medicine, Seoul, Korea (Republic of)
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11
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Choi Y, Kwon CH, Lee SJ, Jeon D, Park DY, Lee S, Kim A. Abstract 3566: SLCO4A1-AS1 promotes tumorigenesis of colorectal cancer by stabilizing SLCO4A1. Cancer Res 2019. [DOI: 10.1158/1538-7445.am2019-3566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Long noncoding RNAs (lncRNAs) constitute an important component of tumor biology, but the molecular mechanism through lncRNAs modulating colorectal cancer (CRC) development and progression remains unclear. Herein we analyzed RNA sequencing data of CRC patients (147 tumor and 47 matched normal tissues) to identify significant lncRNAs involved in CRC. We found 6032 lncRNAs (15%) and selected three up-expressed (ELFN1-AS1, SLCO4A1-AS1, and LINC02418) and six down-expressed (MIR22HG, BCYRN1, SATB2-AS1, LINC01752, CMAHP, and LINC01082) lncRNAs according to fold change and p-value. In Kaplan-Meier survival analysis, CRC patients with high expression of SLCO4A1-AS1 had poorer prognosis than the patients with low expression of SLCO4A1-AS1, and the other lncRNA expressions were not associated with prognosis. To concentrate on the biological function of SLCO4A1-AS1, we investigated the relationship between SLCO4A1-AS1 and SLCO4A1. They were validated in tumor and normal tissues by qRT-PCR and SLCO4A1 expression was also confirmed by immunohistochemistry, indicating their positive correlation. After knocking down of SLCO4A1-AS1, SLCO4A1 protein level was decreased and cell proliferation was suppressed in CRC cell lines. However, SLCO4A1-AS1 level was not changed by knock-down of SLCO4A1. It demonstrated that SLCO4A1-AS1 plays oncogenic role through influencing on SLCO4A1. Thus, SLCO4A1-AS1 might be useful biomarkers for CRC diagnosis and prognosis.
Note: This abstract was not presented at the meeting.
Citation Format: Yuri Choi, Chae Hwa Kwon, Seon Jin Lee, Daye Jeon, Do Youn Park, Sojeong Lee, Ahrong Kim. SLCO4A1-AS1 promotes tumorigenesis of colorectal cancer by stabilizing SLCO4A1 [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29-Apr 3; Atlanta, GA. Philadelphia (PA): AACR; Cancer Res 2019;79(13 Suppl):Abstract nr 3566.
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Affiliation(s)
- Yuri Choi
- 1Pusan National University, Busan, Republic of Korea
| | - Chae Hwa Kwon
- 2Pusan National University Hospital, Busan, Republic of Korea
| | - Seon Jin Lee
- 2Pusan National University Hospital, Busan, Republic of Korea
| | - Daye Jeon
- 1Pusan National University, Busan, Republic of Korea
| | - Do Youn Park
- 1Pusan National University, Busan, Republic of Korea
| | - Sojeong Lee
- 1Pusan National University, Busan, Republic of Korea
| | - Ahrong Kim
- 1Pusan National University, Busan, Republic of Korea
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12
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Seol YM, Kwon CH, Lee SJ, Lee SJ, Choi Y, Choi YJ, Kim H, Park DY. A Pilot Prospective Study of Refractory Solid Tumor Patients for NGS-Based Targeted Anticancer Therapy. Transl Oncol 2018; 12:301-307. [PMID: 30448735 PMCID: PMC6240710 DOI: 10.1016/j.tranon.2018.10.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/26/2018] [Accepted: 10/29/2018] [Indexed: 12/30/2022] Open
Abstract
With the advent of next-generation sequencing (NGS), targeted sequencing is now contributing to decision making for which chemotherapeutics to administer to cancer patients, especially in refractory and metastatic cancer. Given that most patients with refractory cancer develop resistance to chemotherapy and have few treatment options, we performed NGS test to evaluate the efficacy and clinical feasibility of NGS-based targeted anticancer therapy. We used a gene panel for capturing target regions covering 83 cancer-related genes. A total of 25 refractory metastatic solid tumor patients were enrolled in this study. Among the 25 patients, 7 had FDA-approved drug-responsive or -resistant alterations. However, the effectiveness of targeted therapy was assessed by follow-up in three patients (12%). These included crizotinib for ALK-EML4 fusion in a malignancy of undefined origin patient and everolimus for AKT3 amplification in a uterine sarcoma patient. In addition, we identified a KRAS codon 146 mutation (A146V), which is associated with resistance to anti-EGFR, in a cetuximab-resistant colon cancer patient with wild-type KRAS exons 2 and 12, and EGFR amplification. He received bevacizumab therapy. All three patients showed partial response after targeted therapy. Furthermore, we characterized KRAS A146V biologically using colon cancer cells. In conclusion, this study suggests that targeted therapy based on NGS test may be a good choice for improving the care of patients with refractory solid tumors.
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Affiliation(s)
- Young Mi Seol
- Department of Hemato-oncology, Pusan National University Hospital and Pusan National University School of Medicine, 179, Gudeok-ro, Seo-gu, Busan 49241, Republic of Korea; BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Republic of Korea
| | - Chae Hwa Kwon
- BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Republic of Korea
| | - So Jeong Lee
- BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Republic of Korea; Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, 179, Gudeok-ro, Seo-gu, Busan 49241, Republic of Korea
| | - Seon Jin Lee
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, 179, Gudeok-ro, Seo-gu, Busan 49241, Republic of Korea
| | - Yuri Choi
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, 179, Gudeok-ro, Seo-gu, Busan 49241, Republic of Korea
| | - Young Jin Choi
- Department of Hemato-oncology, Pusan National University Hospital and Pusan National University School of Medicine, 179, Gudeok-ro, Seo-gu, Busan 49241, Republic of Korea; BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Republic of Korea
| | - Hyojeong Kim
- Department of Hemato-oncology, Pusan National University Hospital and Pusan National University School of Medicine, 179, Gudeok-ro, Seo-gu, Busan 49241, Republic of Korea; BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Republic of Korea
| | - Do Youn Park
- BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Republic of Korea; Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, 179, Gudeok-ro, Seo-gu, Busan 49241, Republic of Korea.
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13
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Lee BD, Kong JY, Kwon CH, Park JM, Lee YM, Moon E, Jeong HJ, Kim SY, Lee KY, Suh H. A whole exome sequencing study of a Korean proband with idiopathic basal ganglia calcification and its daughter. Medicine (Baltimore) 2018; 97:e12918. [PMID: 30335026 PMCID: PMC6211901 DOI: 10.1097/md.0000000000012918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Idiopathic basal ganglia calcification (IBGC) is characterized by brain calcification and a wide variety of neurological and psychiatric symptoms. In families displaying an autosomal dominant inheritance pattern, three causative genes have been identified: SLC20A2, PDGFRB, and very recently, PDGFB. While in clinical practice sporadic presentation of IBGC is frequent, well-documented reports of true sporadic occurrences are rare. We report a case of a 61-year-old woman who presented with depressive and dystonic symptoms revealing IBGC. Her 41-year-old daughter was healthy. In the proband, we identified 4 mutations in PDGFB, and 1 exonic mutation in SLC20A2, all of which were absent in the daughter. These mutations may result in a loss-of-function of PDGF-B or SLC20A2, which has been shown to cause IBGC in humans and disrupts the blood-brain barrier in mice resulting in brain calcification. Herein, we present the occurrence of a sporadic patient of IBGC and its causative mutations.
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Affiliation(s)
- Byung Dae Lee
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
- Department of Psychiatry, Pusan National University College of Medicine, Kyungnam, Republic of Korea
| | - Ja Young Kong
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
| | - Chae Hwa Kwon
- Biomedical Research Institute, Pusan National University Hospital, Busan
| | - Je Min Park
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
- Department of Psychiatry, Pusan National University College of Medicine, Kyungnam, Republic of Korea
| | - Young Min Lee
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
- Department of Psychiatry, Pusan National University College of Medicine, Kyungnam, Republic of Korea
| | - Eunsoo Moon
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
- Department of Psychiatry, Pusan National University College of Medicine, Kyungnam, Republic of Korea
| | - Hee Jeong Jeong
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
| | - Soo Yeon Kim
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
| | - Kang Yoon Lee
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
| | - Hwagyu Suh
- Department of Psychiatry
- Biomedical Research Institute, Pusan National University Hospital, Busan
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14
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Kim BS, Kim TH, Kwon CH, Kim SH, Kim HJ, Hwang HK, Chung SM. P6250Association between preoperative high sensitive troponin I levels and cardiovascular events after non cardiac surgery in the elderly. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- B S Kim
- Konkuk University Hospital, Division of Cardiology, Department of Medicine, Seoul, Korea Republic of
| | - T H Kim
- Konkuk University Hospital, Department of Orthopedic surgery, Seoul, Korea Republic of
| | - C H Kwon
- Konkuk University Hospital, Division of Cardiology, Department of Medicine, Seoul, Korea Republic of
| | - S H Kim
- Konkuk University Hospital, Division of Cardiology, Department of Medicine, Seoul, Korea Republic of
| | - H J Kim
- Konkuk University Hospital, Division of Cardiology, Department of Medicine, Seoul, Korea Republic of
| | - H K Hwang
- Konkuk University Hospital, Division of Cardiology, Department of Medicine, Seoul, Korea Republic of
| | - S M Chung
- Konkuk University Hospital, Division of Cardiology, Department of Medicine, Seoul, Korea Republic of
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15
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Choi Y, Kwon CH, Lee SJ, Park J, Shin JY, Park DY. Integrative analysis of oncogenic fusion genes and their functional impact in colorectal cancer. Br J Cancer 2018; 119:230-240. [PMID: 29955133 PMCID: PMC6048111 DOI: 10.1038/s41416-018-0153-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 05/22/2018] [Accepted: 05/29/2018] [Indexed: 12/21/2022] Open
Abstract
Background Fusion genes are good candidates of molecular targets for cancer therapy. However, there is insufficient research on the clinical implications and functional characteristics of fusion genes in colorectal cancer (CRC). Methods In this study, we analysed RNA sequencing data of CRC patients (147 tumour and 47 matched normal tissues) to identify oncogenic fusion genes and evaluated their role in CRC. Results We validated 24 fusion genes, including novel fusions, by three algorithms and Sanger sequencing. Fusions from most patients were mutually exclusive CRC oncogenes and included tumour suppressor gene mutations. Eleven fusion genes from 13 patients (8.8%) were determined as oncogenic fusion genes by analysing their gene expression and function. To investigate their oncogenic impact, we performed proliferation and migration assays of CRC cell lines expressing fusion genes of GTF3A-CDK8, NAGLU- IKZF3, RNF121- FOLR2, and STRN-ALK. Overexpression of these fusion genes increased cell proliferation except GTF3A-CDK8. In addition, overexpression of NAGLU-IKZF3 enhanced migration of CRC cells. We demonstrated that NAGLU-IKZF3, RNF121-FOLR2, and STRN-ALK had tumourigenic effects in CRC. Conclusion In summary, we identified and characterised oncogenic fusion genes and their function in CRC, and implicated NAGLU-IKZF3 and RNF121-FOLR2 as novel molecular targets for personalised medicine development.
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Affiliation(s)
- Yuri Choi
- Department of Pathology, Pusan National University School of Medicine, and Biomedical Research Institute, Pusan National University Hospital, Gudeok-ro 179, Seo-Gu, Busan, 49241, Republic of Korea
| | - Chae Hwa Kwon
- Department of Pathology, Pusan National University School of Medicine, and Biomedical Research Institute, Pusan National University Hospital, Gudeok-ro 179, Seo-Gu, Busan, 49241, Republic of Korea
| | - Seon Jin Lee
- Department of Pathology, Pusan National University School of Medicine, and Biomedical Research Institute, Pusan National University Hospital, Gudeok-ro 179, Seo-Gu, Busan, 49241, Republic of Korea
| | - Joonghoon Park
- Graduate School of International Agricultural Technology and Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, 232-916, Republic of Korea
| | - Jong-Yeon Shin
- Genomic Medicine Institute (GMI), Medical Research Center, Seoul National University, Seoul, 159-781, Republic of Korea
| | - Do Youn Park
- Department of Pathology, Pusan National University School of Medicine, and Biomedical Research Institute, Pusan National University Hospital, Gudeok-ro 179, Seo-Gu, Busan, 49241, Republic of Korea.
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Choi Y, Won YJ, Lee S, Kim A, Kim Y, Park WY, Jo HJ, Song GA, Kwon CH, Park DY. Cytoplasmic TrkA Expression as a Screen for Detecting NTRK1 Fusions in Colorectal Cancer. Transl Oncol 2018; 11:764-770. [PMID: 29689458 PMCID: PMC6050437 DOI: 10.1016/j.tranon.2018.03.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 03/28/2018] [Accepted: 03/28/2018] [Indexed: 01/23/2023] Open
Abstract
NTRK1 gene fusions, the targets of multikinase inhibitors, are promising therapeutic targets for colorectal cancer (CRC). However, screening methods for detecting NTRK1 gene fusions in CRC tissues have not been reported. In this study, we investigated the potential use of immunohistochemistry (IHC) for detecting NTRK1 gene fusions. We performed and compared IHC with fluorescence in situ hybridization (FISH) in 80 CRC patients. TrkA immunostaining was observed to be both membranous and cytoplasmic and was scored semiquantitatively using staining intensity and proportions. The tumors were observed to be NTRK1 gene fusion-positive when ≥20 out of 100 nuclei in FISH. A significant correlation between the IHC and FISH results for determination of the NTRK1 gene fusions was observed. We measured the cytoplasmic TrkA expression, which showed an area under the receiver operating characteristic (ROC) curve of 0.926 (range: 0.864-0.987, 95% CI, P = .001). By choosing 4.5 (sum of the intensity and proportion scores of cytoplasmic TrkA expression) as the cut-off value for the positive and negative NTRK1 gene fusion groups, the sensitivity and specificity for predicting lymph node metastasis were 100 and 83.8%, respectively (P = .001). Specifically, high cytoplasmic TrkA expression (sum of intensity and proportion scores >4) was associated with the presence of NTRK1 gene fusions (P < .0001, r = 0.528). Taken together, our data showed that IHC for TrkA can be used as an efficient screening method for detecting NTRK1 gene fusions in CRC.
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Affiliation(s)
- Yuri Choi
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-ro, Seo-Gu, Busan 49241, Republic of Korea
| | - Yeo-Jin Won
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-ro, Seo-Gu, Busan 49241, Republic of Korea
| | - Sojeong Lee
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-ro, Seo-Gu, Busan 49241, Republic of Korea
| | - Ahrong Kim
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-ro, Seo-Gu, Busan 49241, Republic of Korea
| | - Younggeum Kim
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-ro, Seo-Gu, Busan 49241, Republic of Korea
| | - Won-Young Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-ro, Seo-Gu, Busan 49241, Republic of Korea
| | - Hong-Jae Jo
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-ro, Seo-Gu, Busan 49241, Republic of Korea
| | - Geun Am Song
- Department of Internal Medicine, Pusan National University Hospital and Pusan National University School of Medicine, and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-ro, Seo-Gu, Busan 49241, Republic of Korea
| | - Chae Hwa Kwon
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-ro, Seo-Gu, Busan 49241, Republic of Korea
| | - Do Youn Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and Biomedical Research Institute, Pusan National University Hospital, 179 Gudeok-ro, Seo-Gu, Busan 49241, Republic of Korea.
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Kim KH, Bae Y, Lee KS, Moon Y, Kwon CH, Ahn JH. Characterization of Mutagenicity Test and Identification of N-Nitroso Mutagens in Some Soju Alcoholic Spirits. Journal of the American Society of Brewing Chemists 2018. [DOI: 10.1094/asbcj-2012-0716-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Ki-Hyung Kim
- Department of Obstetrics and Gynecology, Pusan National University Hospital, School of Medicine and Medical Research Institute, Busan, Korea
| | | | - Kyu-Sup Lee
- Department of Obstetrics and Gynecology, Pusan National University Hospital, School of Medicine and Medical Research Institute, Busan, Korea
| | - Yuseok Moon
- Department of Microbiology and Immunology, Pusan National University School of Medicine, Yangsan, Korea
| | - Chae Hwa Kwon
- Department of Obstetrics and Gynecology, Pusan National University Hospital, School of Medicine and Medical Research Institute, Busan, Korea
| | - Jung Hoon Ahn
- Korea Science Academy, Busan, Korea
- Institute for Gifted Students, Korea Advanced Institute of Science and Technology, Daejeon, Korea
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Kwon CH, Park HJ, Choi YR, Kim A, Kim HW, Choi JH, Hwang CS, Lee SJ, Choi CI, Jeon TY, Kim DH, Kim GH, Park DY. PSMB8 and PBK as potential gastric cancer subtype-specific biomarkers associated with prognosis. Oncotarget 2017; 7:21454-68. [PMID: 26894977 PMCID: PMC5008298 DOI: 10.18632/oncotarget.7411] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 02/05/2016] [Indexed: 11/25/2022] Open
Abstract
Gastric adenocarcinoma is a common form of cancer associated with a poor prognosis. We analyzed microarray profiling data from 48 patients with gastric adenocarcinoma to characterize gastric cancer subtypes and identify biomarkers associated with prognosis. We identified two major subtypes of gastric adenocarcinoma differentially associated with overall survival (P = 0.025). Genes that were differentially expressed were identified using specific criteria (P < 0.001 and >1.5-fold); expression of 294 and 116 genes was enriched in good and poor prognosis subtypes, respectively. Genes related to translational elongation and cell cycle were upregulated in the poor prognosis group. Of these genes, upregulation of proteasome subunit beta type 8 PSMB8 and PDZ binding kinase PBK was confirmed by real-time reverse transcription-PCR analysis. PSMB8 or PBK knockdown had no effect on gastric cancer cell proliferation but suppressed cell migration and invasion, respectively. Furthermore, immunohistochemistry analysis of 385 gastric cancer patients revealed that increased nuclear expression of PSMB8 and PBK was correlated with depth of invasion, lymph node metastasis, and lower survival rates. Taken together, two gastric adenocarcinoma subtypes were predictive of prognosis. PSMB8 and PBK were predictive of gastric cancer prognosis and could be potential gastric cancer subtype-specific biomarkers.
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Affiliation(s)
- Chae Hwa Kwon
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Hye Ji Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Yu Ri Choi
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Ahrong Kim
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Hye Won Kim
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Jin Hwa Choi
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Chung Su Hwang
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - So Jung Lee
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Chang In Choi
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Tae Yong Jeon
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Dae Hwan Kim
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Gwang Ha Kim
- Department of Internal Medicine, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Do Youn Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
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Kwon CH, Park HJ, Choi Y, Won YJ, Lee SJ, Park DY. TWIST mediates resistance to paclitaxel by regulating Akt and Bcl-2 expression in gastric cancer cells. Tumour Biol 2017; 39:1010428317722070. [DOI: 10.1177/1010428317722070] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Chae Hwa Kwon
- Department of Pathology, Pusan National University School of Medicine and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hye Ji Park
- Department of Pathology, Pusan National University School of Medicine and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Yuri Choi
- Department of Pathology, Pusan National University School of Medicine and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Yeo Jin Won
- Department of Pathology, Pusan National University School of Medicine and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Seon Jin Lee
- Department of Pathology, Pusan National University School of Medicine and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Do Youn Park
- Department of Pathology, Pusan National University School of Medicine and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
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Cho SY, Park JW, Liu Y, Park YS, Kim JH, Yang H, Um H, Ko WR, Lee BI, Kwon SY, Ryu SW, Kwon CH, Park DY, Lee JH, Lee SI, Song KS, Hur H, Han SU, Chang H, Kim SJ, Kim BS, Yook JH, Yoo MW, Kim BS, Lee IS, Kook MC, Thiessen N, He A, Stewart C, Dunford A, Kim J, Shih J, Saksena G, Cherniack AD, Schumacher S, Weiner AT, Rosenberg M, Getz G, Yang EG, Ryu MH, Bass AJ, Kim HK. Sporadic Early-Onset Diffuse Gastric Cancers Have High Frequency of Somatic CDH1 Alterations, but Low Frequency of Somatic RHOA Mutations Compared With Late-Onset Cancers. Gastroenterology 2017; 153:536-549.e26. [PMID: 28522256 PMCID: PMC6863080 DOI: 10.1053/j.gastro.2017.05.012] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 05/08/2017] [Accepted: 05/08/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND & AIMS Early-onset gastric cancer, which develops in patients younger than most gastric cancers, is usually detected at advanced stages, has diffuse histologic features, and occurs more frequently in women. We investigated somatic genomic alterations associated with the unique characteristics of sporadic diffuse gastric cancers (DGCs) from younger patients. METHODS We conducted whole exome and RNA sequence analyses of 80 resected DGC samples from patients 45 years old or younger in Korea. Patients with pathogenic germline mutations in CDH1, TP53, and ATM were excluded from the onset of this analysis, given our focus on somatic alterations. We used MutSig2CV to evaluate the significance of mutated genes. We recruited 29 additional early-onset Korean DGC samples and performed SNP6.0 array and targeted sequencing analyses of these 109 early-onset DGC samples (54.1% female, median age, 38 years). We compared the SNP6.0 array and targeted sequencing data of the 109 early-onset DGC samples with those from diffuse-type stomach tumor samples collected from 115 patients in Korea who were 46 years or older (late onset) at the time of diagnosis (controls; 29.6% female, median age, 67 years). We compared patient survival times among tumors from different subgroups and with different somatic mutations. We performed gene silencing of RHOA or CDH1 in DGC cells with small interfering RNAs for cell-based assays. RESULTS We identified somatic mutations in the following genes in a significant number of early-onset DGCs: the cadherin 1 gene (CDH1), TP53, ARID1A, KRAS, PIK3CA, ERBB3, TGFBR1, FBXW7, RHOA, and MAP2K1. None of 109 early-onset DGC cases had pathogenic germline CDH1 mutations. A higher proportion of early-onset DGCs had mutations in CDH1 (42.2%) or TGFBR1 (7.3%) compared with control DGCs (17.4% and 0.9%, respectively) (P < .001 and P = .014 for CDH1 and TGFBR1, respectively). In contrast, a smaller proportion of early-onset DGCs contained mutations in RHOA (9.2%) than control DGCs (19.1%) (P = .033). Late-onset DGCs in The Cancer Genome Atlas also contained less frequent mutations in CDH1 and TGFBR1 and more frequent RHOA mutations, compared with early-onset DGCs. Early-onset DGCs from women contained significantly more mutations in CDH1 or TGFBR1 than early-onset DGCs from men. CDH1 alterations, but not RHOA mutations, were associated with shorter survival times in patients with early-onset DGCs (hazard ratio, 3.4; 95% confidence interval, 1.5-7.7). RHOA activity was reduced by an R5W substitution-the RHOA mutation most frequently detected in early-onset DGCs. Silencing of CDH1, but not RHOA, increased migratory activity of DGC cells. CONCLUSIONS In an integrative genomic analysis, we found higher proportions of early-onset DGCs to contain somatic mutations in CDH1 or TGFBR1 compared with late-onset DGCs. However, a smaller proportion of early-onset DGCs contained somatic mutations in RHOA than late-onset DGCs. CDH1 alterations, but not RHOA mutations, were associated with shorter survival times of patients, which might account for the aggressive clinical course of early-onset gastric cancer. Female predominance in early-onset gastric cancer may be related to relatively high rates of somatic CDH1 and TGFBR1 mutations in this population.
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Affiliation(s)
- Soo Young Cho
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea
| | - Jun Won Park
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea
| | - Yang Liu
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Young Soo Park
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Ju Hee Kim
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea
| | - Hanna Yang
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea
| | - Hyejin Um
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea
| | - Woo Ri Ko
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea
| | - Byung Il Lee
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea
| | - Sun Young Kwon
- Department of Pathology, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Seung Wan Ryu
- Department of Surgery, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Chae Hwa Kwon
- Department of Pathology and BioMedical Research Institute, Pusan National University Hospital and Pusan National University School of Medicine, Busan, Republic of Korea
| | - Do Youn Park
- Department of Pathology and BioMedical Research Institute, Pusan National University Hospital and Pusan National University School of Medicine, Busan, Republic of Korea
| | - Jae-Hyuk Lee
- Department of Pathology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Sang Il Lee
- Department of Surgery, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Kyu Sang Song
- Department of Pathology, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Hoon Hur
- Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Sang-Uk Han
- Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Heekyung Chang
- Department of Pathology, Kosin University College of Medicine, Busan, Republic of Korea
| | - Su-Jin Kim
- Department of Pathology, Dong-A University College of Medicine, Busan, Republic of Korea
| | - Byung-Sik Kim
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jeong-Hwan Yook
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Moon-Won Yoo
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Beom-Su Kim
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - In-Seob Lee
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | | | - Nina Thiessen
- British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - An He
- British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Chip Stewart
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Andrew Dunford
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Jaegil Kim
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Juliann Shih
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts;,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Gordon Saksena
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Andrew D. Cherniack
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts;,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Steven Schumacher
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Amaro-Taylor Weiner
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Mara Rosenberg
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Gad Getz
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Eun Gyeong Yang
- Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Min-Hee Ryu
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Adam J. Bass
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts;,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Hark Kyun Kim
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea; National Cancer Center Graduate School of Cancer Science and Policy, Goyang, Gyeonggi, Republic of Korea.
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Choi Y, Kwon CH, Park HJ, Won YJ, Park DY. Abstract 4383: Novel fusion transcripts in colorectal cancer patients revealed by next-generation RNA sequencing. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-4383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Although colorectal cancer (CRC) is the third most common type of cancer in the world, there is an insufficient research on molecular targets for prevention and therapies of CRC. Gene fusions are associated with tumorigenesis and tumor activation, and could be a standard to distinguish tumor heterogeneity for personalized therapy. In the present study, we performed next-generation RNA sequencing (150 tumor and 50 matched normal tissues) in order to discover novel fusion transcripts in CRC. A total 25 transcript candidates were detected by GFP, deFuse, and FusionMap algorithms. Among the candidates, 6 fusion transcripts were selected (B4GALT1-BAG1, GTF3A-CDK8, NAGLU-IKZF3, RNF121-FOLR2, STRN-ALK, and TAF4-NDRG3) after analyzing expression and function of the acceptor genes. All of them were validated by sanger-sequencing and were not found in another cohort. Overexpression of these fusion genes, except B4GALT1-BAG1, increased proliferation of CRC cells. In addition, overexpression of NAGLU-IKZF3 enhanced migration of CRC cells. These results reveal novel fusion transcripts and their tumorigenic effects in CRC. Ultimately, it could illuminate a genomic-driven strategy to develop personalized medicine.
Key words: fusion transcript, colorectal cancer, RNA-seq
Citation Format: Yuri Choi, Chae Hwa Kwon, Hye Ji Park, Yeo-Jin Won, Do Youn Park. Novel fusion transcripts in colorectal cancer patients revealed by next-generation RNA sequencing [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 4383. doi:10.1158/1538-7445.AM2017-4383
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Affiliation(s)
- Yuri Choi
- 1Pusan National University, Busan, Republic of Korea
| | - Chae Hwa Kwon
- 2Pusan National University Hospital, Busan, Republic of Korea
| | - Hye Ji Park
- 2Pusan National University Hospital, Busan, Republic of Korea
| | - Yeo-Jin Won
- 2Pusan National University Hospital, Busan, Republic of Korea
| | - Do Youn Park
- 1Pusan National University, Busan, Republic of Korea
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Kwon CH, Seol YM, Kim YK, Choi Y, Won YJ, Park DY. Abstract CT112: Use of targeted sequencing of cancer genome (cancer panel) to develop patient-centered therapeutic target based on molecular alternations: A pilot prospective study for 25 patients with refractory and metastatic cancer and treatment response. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-ct112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
With the advent for technology of next generation sequencing, targeted sequencing is now becoming part of decision of chemotherapeutics in cancer patients, especially in refractory and metastatic cancer. We performed targeted sequencing to develop patient-centered trials to find therapeutic target based on molecular alternations. We used cancer panel for capturing of target region covering 83 cancer-related genes and validated it using 3 cases with ALK-fusion, ERBB2 amplification, or KRAS mutation. A total of 25 refractory metastatic cancer patients enrolled on this study so far. The majority of alterations were identified in ATM, FBXW7, NOTCH1, TP53, STK11, ARID1B, GNAS, FGFR3, SMAD4, and HNF1A. Among 25 patients, 12 had FDA-approved drug responsive or resistant alterations. However, targeted therapy was guided in 3 patients (12 %) on the basis of sequencing results because of lack of access to clinical trials, declining performance status and/or stable disease with previous treatment; crizotinib to ALK-EML4 fusion in malignancy of undefined origin (MUO) patient, pazopanib to FGFR amplification in malignant peripheral nerve sheath tumor (MPNST) patient, and everolimus to AKT3 amplification in uterine endometrial stromal sarcoma patient. All 3 patients showed partial response after targeted therapy. In addition, we identified KRAS codon 146 mutation (A146V), associated with resistance to anti-EGFR, in a cetuximab resistant colon cancer patient with wild-type KRAS exon 2 and 12 and EGFR. Taken together, this study suggests that identifying targets associated with response or resistance to specific targeted therapies using targeted sequencing can show great promise for improving the care of patients with refractory and metastatic cancer patients.
Citation Format: Chae Hwa Kwon, Young Mi Seol, Young Keum Kim, Yuri Choi, Yeo Jin Won, Do Youn Park. Use of targeted sequencing of cancer genome (cancer panel) to develop patient-centered therapeutic target based on molecular alternations: A pilot prospective study for 25 patients with refractory and metastatic cancer and treatment response [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr CT112. doi:10.1158/1538-7445.AM2017-CT112
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Affiliation(s)
- Chae Hwa Kwon
- 1Biomedical Research Institute, Pusan Naitonal University Hospital, Busan, Republic of Korea
| | - Young Mi Seol
- 2Department of Hemato-oncology, Pusan Naitonal University Hospital, Busan, Republic of Korea
| | - Young Keum Kim
- 3Department of Pathology, Pusan Naitonal University Hospital, Busan, Republic of Korea
| | - Yuri Choi
- 3Department of Pathology, Pusan Naitonal University Hospital, Busan, Republic of Korea
| | - Yeo Jin Won
- 3Department of Pathology, Pusan Naitonal University Hospital, Busan, Republic of Korea
| | - Do Youn Park
- 3Department of Pathology, Pusan Naitonal University Hospital, Busan, Republic of Korea
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Park DY, Choi C, Shin E, Lee JH, Kwon CH, Jo HJ, Kim HR, Kim HS, Oh N, Lee JS, Park OK, Park E, Park J, Shin JY, Kim JI, Seo JS, Park HD, Park J. NTRK1 fusions for the therapeutic intervention of Korean patients with colon cancer. Oncotarget 2016; 7:8399-412. [PMID: 26716414 PMCID: PMC4885001 DOI: 10.18632/oncotarget.6724] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 12/07/2015] [Indexed: 12/16/2022] Open
Abstract
The identification and clinical validation of cancer driver genes are essential to accelerate the translational transition of cancer genomics, as well as to find clinically confident targets for the therapeutic intervention of cancers. Here we identified recurrent LMNA-NTRK1 and TPM3-NTRK1 fusions in Korean patients with colon cancer (3 out of 147, 2%) through next-generation RNA sequencing (RNA-seq). NTRK1 fusions were mutually exclusive oncogenic drivers of colon cancer that were accompanied with in vitro potential of colony formation and in vivo tumorigenicity comparable to KM12, a human colon cancer cell line harboring TPM3-NTRK1 fusion. NTRK1-encoded TrkA protein was prevalent in 11 out of 216 Korean (5.1%) and 28 out of 472 Chinese patients (5.9%) from independent cohorts, respectively. The expression level of TrkA was significantly correlated with NTRK1 fusion (p = 0.0192), which was verified by a fluorescence in situ hybridization (FISH). Korean patients with TrkA-positive colon cancer had a marginal but significant shorter overall survival time than TrkA-negative colon cancer [hazard ratio (HR) = 0.5346, 95% confidential interval (CI) = 0.2548-0.9722, p = 0.0411]. In addition, KM12 cell line was sensitive to selective TrkA inhibitors. These results demonstrate that NTRK1 fusion is granted as a clinically relevant target for therapeutic intervention of colon cancer.
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Affiliation(s)
- Do Youn Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Chan Choi
- Department of Pathology, Chonnam National University Hwasun Hospital, Hwasun-gun, Jeollanam-do, Republic of Korea
| | - Eunji Shin
- LG Life Sciences Ltd., R&D Park, Daejeon, Republic of Korea
| | - Jae Hyuk Lee
- Department of Pathology, Chonnam National University Hwasun Hospital, Hwasun-gun, Jeollanam-do, Republic of Korea
| | - Chae Hwa Kwon
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hong-Jae Jo
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hyeong-Rok Kim
- Department of Surgery, Chonnam National University Hwasun Hospital, Hwasun-gun, Jeollanam-do, Republic of Korea
| | - Hyun Sung Kim
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Nahmgun Oh
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Ji Shin Lee
- Department of Pathology, Chonnam National University Hwasun Hospital, Hwasun-gun, Jeollanam-do, Republic of Korea
| | - Ok Ku Park
- LG Life Sciences Ltd., R&D Park, Daejeon, Republic of Korea
| | - Eok Park
- LG Life Sciences Ltd., R&D Park, Daejeon, Republic of Korea
| | - Jonghoon Park
- LG Life Sciences Ltd., R&D Park, Daejeon, Republic of Korea
| | - Jong-Yeon Shin
- Genomic Medicine Institute (GMI), Medical Research Center, Seoul National University, Seoul, Republic of Korea
| | - Jong-Il Kim
- Genomic Medicine Institute (GMI), Medical Research Center, Seoul National University, Seoul, Republic of Korea.,Department of Biochemical and Molecular Biology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jeong-Sun Seo
- Genomic Medicine Institute (GMI), Medical Research Center, Seoul National University, Seoul, Republic of Korea.,Department of Biochemical and Molecular Biology, Seoul National University College of Medicine, Seoul, Republic of Korea.,Macrogen Inc., Seoul, Republic of Korea
| | - Hee Dong Park
- LG Life Sciences Ltd., R&D Park, Daejeon, Republic of Korea
| | - Joonghoon Park
- LG Life Sciences Ltd., R&D Park, Daejeon, Republic of Korea
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Lee JR, Kwon CH, Choi Y, Park HJ, Kim HS, Jo HJ, Oh N, Park DY. Transcriptome analysis of paired primary colorectal carcinoma and liver metastases reveals fusion transcripts and similar gene expression profiles in primary carcinoma and liver metastases. BMC Cancer 2016; 16:539. [PMID: 27461012 PMCID: PMC4962348 DOI: 10.1186/s12885-016-2596-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 07/21/2016] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Despite the clinical significance of liver metastases, the difference between molecular and cellular changes in primary colorectal cancers (CRC) and matched liver metastases is poorly understood. METHODS In order to compare gene expression patterns and identify fusion genes in these two types of tumors, we performed high-throughput transcriptome sequencing of five sets of quadruple-matched tissues (primary CRC, liver metastases, normal colon, and liver). RESULTS The gene expression patterns in normal colon and liver were successfully distinguished from those in CRCs; however, RNA sequencing revealed that the gene expression between primary CRCs and their matched liver metastases is highly similar. We identified 1895 genes that were differentially expressed in the primary carcinoma and liver metastases, than that in the normal colon tissues. A major proportion of the transcripts, identified by gene expression profiling as significantly enriched in the primary carcinoma and metastases, belonged to gene ontology categories involved in the cell cycle, mitosis, and cell division. Furthermore, we identified gene fusion events in primary carcinoma and metastases, and the fusion transcripts were experimentally confirmed. Among these, a chimeric transcript resulting from the fusion of RNF43 and SUPT4H1 was found to occur frequently in primary colorectal carcinoma. In addition, knockdown of the expression of this RNF43-SUPT4H1 chimeric transcript was found to have a growth-inhibitory effect in colorectal cancer cells. CONCLUSIONS The present study reports a high concordance of gene expression in the primary carcinoma and liver metastases, and reveals potential new targets, such as fusion genes, against primary and metastatic colorectal carcinoma.
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Affiliation(s)
- Ja-Rang Lee
- Department of Pathology Pusan National University Hospital, Pusan National University School of Medicine, Seo-Gu, Busan, 602-739, Korea.,BioMedical Research Institute Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Chae Hwa Kwon
- Department of Pathology Pusan National University Hospital, Pusan National University School of Medicine, Seo-Gu, Busan, 602-739, Korea.,BioMedical Research Institute Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Yuri Choi
- Department of Pathology Pusan National University Hospital, Pusan National University School of Medicine, Seo-Gu, Busan, 602-739, Korea.,BioMedical Research Institute Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Hye Ji Park
- Department of Pathology Pusan National University Hospital, Pusan National University School of Medicine, Seo-Gu, Busan, 602-739, Korea.,BioMedical Research Institute Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Hyun Sung Kim
- BioMedical Research Institute Pusan National University Hospital, Seo-Gu, Busan, Korea.,Department of Surgery Pusan National University Hospital, Pusan National University School of Medicine, Seo-Gu, Busan, Korea
| | - Hong-Jae Jo
- BioMedical Research Institute Pusan National University Hospital, Seo-Gu, Busan, Korea.,Department of Surgery Pusan National University Hospital, Pusan National University School of Medicine, Seo-Gu, Busan, Korea
| | - Nahmgun Oh
- BioMedical Research Institute Pusan National University Hospital, Seo-Gu, Busan, Korea.,Department of Surgery Pusan National University Hospital, Pusan National University School of Medicine, Seo-Gu, Busan, Korea
| | - Do Youn Park
- Department of Pathology Pusan National University Hospital, Pusan National University School of Medicine, Seo-Gu, Busan, 602-739, Korea. .,BioMedical Research Institute Pusan National University Hospital, Seo-Gu, Busan, Korea.
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Kwon CH, Park HJ, Choi JH, Lee JR, Kim HK, Jo HJ, Kim HS, Oh N, Song GA, Park DY. Snail and serpinA1 promote tumor progression and predict prognosis in colorectal cancer. Oncotarget 2016; 6:20312-26. [PMID: 26015410 PMCID: PMC4653007 DOI: 10.18632/oncotarget.3964] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 04/10/2015] [Indexed: 12/29/2022] Open
Abstract
The role of Snail and serpin peptidase inhibitor clade A member 1 (serpinA1) in tumorigenesis has been previously identified. However, the exact role and mechanism of these proteins in progression of colorectal cancer (CRC) are controversial. In this study, we investigated the role of Snail and serpinA1 in colorectal cancer (CRC) and examined the mechanisms through which these proteins mediate CRC progression. Immunohistochemical analysis of 528 samples from patients with CRC showed that elevated expression of Snail or serpinA1 was correlated with advanced stage, lymph node metastasis, and poor prognosis. Moreover, we detected a correlation between Snail and serpinA1 expression. Functional studies performed using the CRC cell lines DLD-1 and SW-480 showed that overexpression of Snail or serpinA1 significantly increased CRC cell invasion and migration. Conversely, knockdown of Snail or serpinA1 expression suppressed CRC cell invasion and migration. ChIP analysis revealed that Snail regulated serpinA1 by binding to its promoter. In addition, fibronectin mediated Snail and serpinA1 signaling was involved in CRC cell invasion and migration. Taken together, our data showed that Snail and serpinA1 promoted CRC progression through fibronectin. These findings suggested that Snail and serpinA1 were novel prognostic biomarkers and candidate therapeutic targets in CRC.
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Affiliation(s)
- Chae Hwa Kwon
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Hye Ji Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Jin Hwa Choi
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Ja Rang Lee
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Hye Kyung Kim
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Hong-Jae Jo
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Hyun Sung Kim
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Nahmgun Oh
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Geun Am Song
- Department of Internal Medicine, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Do Youn Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
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Abstract
Abstract
Purpose: Snail and serpin peptidase inhibitor clade A member 1 (serpinA1) are involved in tumor progression. In this study, we investigated the role of Snail and serpinA1 in colorectal cancer (CRC) and examined the mechanisms through which these proteins mediate CRC progression.
Experimental Design: Tumors from 528 patients with CRC were examined to determine the clinicopathological significance of Snail and serpinA1 expression. Cell migration and invasion were assessed to determine the functional roles of Snail and serpinA1. Snail binding to the serpinA1 promoter was analyzed by chromatin immunoprecipitation (ChIP) assays.
Results: Immunohistochemical analysis of 528 samples from patients with CRC showed that elevated expression of Snail or serpinA1 was correlated with advanced stage, lymph node metastasis, and poor prognosis. Moreover, we detected a correlation between Snail and serpinA1 expression. Functional studies performed using the CRC cell lines DLD-1 and SW-480 showed that overexpression of Snail or serpinA1 significantly increased CRC cell invasion and migration. Conversely, knockdown of Snail or serpinA1 expression suppressed CRC cell invasion and migration. ChIP analysis revealed that Snail regulated serpinA1 by binding to its promoter. In addition, fibronectin mediated Snail and serpinA1 signaling and was involved in CRC cell invasion and migration.
Conclusion: Taken together, our data showed that Snail and serpinA1 promoted CRC progression through fibronectin. These findings suggested that Snail and serpinA1 were novel prognostic biomarkers and candidate therapeutic targets in CRC.
Note: This abstract was not presented at the meeting.
Citation Format: Chae Hwa Kwon, Hye Ji Park, Ja Rang Lee, Hye Kyung Kim, Do Youn Park. Snail and serpinA1 promote tumor progression and predict prognosis in colorectal cancer. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 3417. doi:10.1158/1538-7445.AM2015-3417
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Affiliation(s)
- Chae Hwa Kwon
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hye Ji Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Ja Rang Lee
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hye Kyung Kim
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Do Youn Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
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Sohn W, Paik YH, Cho JY, Ahn JM, Choi GS, Kim JM, Kwon CH, Joh JW, Sinn DH, Gwak GY, Choi MS, Lee JH, Koh KC, Paik SW, Yoo BC. Influence of hepatitis B virus reactivation on the recurrence of HBV-related hepatocellular carcinoma after curative resection in patients with low viral load. J Viral Hepat 2015; 22:539-50. [PMID: 25377516 DOI: 10.1111/jvh.12356] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Accepted: 09/21/2014] [Indexed: 12/12/2022]
Abstract
It is unclear whether the reactivation of hepatitis B virus (HBV) influences the prognosis of hepatocellular carcinoma (HCC) after resection in patients with chronic hepatitis B. The aim of this study was to identify the influence of HBV reactivation on the recurrence of hepatitis B-related HCC after curative resection in patients with low viral load (HBV DNA <2000 IU/mL). We retrospectively analysed a total of 130 patients who underwent curative resection for HBV-related early stage HCC (single nodule; <5 cm/two or three nodules; <3 cm) with pre-operative HBV DNA levels <2000 IU/mL with serial HBV DNA tests. The predictive factors including HBV reactivation for the recurrence of HBV-related HCC after curative resection were investigated. Fifty-three patients (41%) had HBV reactivation after resection among 130 patients. HBV reactivation was observed in 22 of 53 patients with undetectable baseline HBV DNA and in 31 of 77 patients with detectable baseline HBV DNA. Cumulative recurrence rates after resection at 1, 2 and 3 years were 17.0%, 23.3% and 31.4%, respectively. The multivariable analysis demonstrated that the risk factors for the recurrence were the presence of microvascular invasion (hazard ratio (HR) 2.62, P = 0.003), multinodularity (HR 4.61, P = 0.005), HBV reactivation after resection (HR 2.03, P = 0.032) and HBeAg positivity (HR 2.06, P = 0.044). HBV reactivation after curative resection is associated with the recurrence of HBV-related HCC in patients with low viral load.
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Affiliation(s)
- W Sohn
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Kwon CH, Park HJ, Moon HJ, Lee JR, Park DY. Abstract 4741: SerpinA1 promotes gastric cancer progression through regulation of snail. Cancer Res 2014. [DOI: 10.1158/1538-7445.am2014-4741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
In the previous study, we reported that serpin peptidase inhibitor clade A member 1 (serpinA1) were upregulated in snail overexpressing gastric cancer. Although the effect of serpinA1 has been studied in several cancers, there is no report that the expression of serpinA1 correlates with snail. In this study, we examined the relation between serpinA1 and snail, and the role of serpinA1 in gastric cancer. Overexpression of snail resulted in upregulation of serpinA1 in gastric cancer cells, AGS and MKN45 cells. Meanwhile, knockdown of snail inhibited serpinA1 expression. ChIP analysis showed that snail bind to serpinA1 promoter. Overexpression of snail increased snail recruitment to the serpinA1 promoter. Overexpression of serpinA1 increased the invasion and migration of gastric cancer cells, while knockdown of serpinA1 decreased invasion and migration. In addition, we validated the clinicopathological and prognostic significance of serpinA1 expression in 400 gastric cancer patients using immunohistochemistry analysis. SerpinA1 was observed in the cytoplasm of the tumor cells and stroma. Overexpression of serpinA1 was significantly associated with increased tumor size (P = 0.03), tumor progression (advanced T stage; P < 0.0001), perineural invasion (P < 0.0001), lymphovascular invasion (P < 0.0001), lymph node metastases (P < 0.0001) and shorter survival (P = 0.001). In conclusion, serpinA1 induce the invasion and migration of gastric cancer cells and the expression of serpinA1 is associated with the progression of gastric cancer. These results may provide a potential target to prevent gastric cancer invasion and metastasis.
Note: This abstract was not presented at the meeting.
Citation Format: Chae Hwa Kwon, Hye Ji Park, Hyun Jung Moon, Ja-Rang Lee, Do Youn Park. SerpinA1 promotes gastric cancer progression through regulation of snail. [abstract]. In: Proceedings of the 105th Annual Meeting of the American Association for Cancer Research; 2014 Apr 5-9; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2014;74(19 Suppl):Abstract nr 4741. doi:10.1158/1538-7445.AM2014-4741
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Affiliation(s)
- Chae Hwa Kwon
- 1BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hye J. Park
- 2Cancer Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hyun Jung Moon
- 2Cancer Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Ja-Rang Lee
- 2Cancer Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Do Youn Park
- 3Departments of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
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Kwon CH, Park HJ, Lee JR, Kim HK, Jeon TY, Jo HJ, Kim DH, Kim GH, Park DY. Serpin peptidase inhibitor clade A member 1 is a biomarker of poor prognosis in gastric cancer. Br J Cancer 2014; 111:1993-2002. [PMID: 25211665 PMCID: PMC4229634 DOI: 10.1038/bjc.2014.490] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 07/24/2014] [Accepted: 08/13/2014] [Indexed: 01/16/2023] Open
Abstract
Background: In a previous study, we reported that serpin peptidase inhibitor clade A member 1 (serpinA1) is upregulated in Snail-overexpressing gastric cancer. Although serpinA1 has been studied in several types of cancer, little is known about its roles and mechanisms of action. In this study, we examined the role of serpinA1 in the migration and invasion of gastric cancers and determined its underlying mechanism. Methods: Expression levels were assessed by western blot analyses and real-time PCR. Snail binding to serpinA1 promoter was analysed by chromatin immunoprecipitation (ChIP) assays. The roles of serpinA1 were studied using cell invasion and migration assays. In addition, the clinicopathologic and prognostic significance of serpinA1 expression were validated in 400 gastric cancer patients using immunohistochemical analysis. Results: Overexpression of Snail resulted in upregulation of serpinA1 in gastric cancer cell lines, AGS and MKN45, whereas knockdown of Snail inhibited serpinA1 expression. Chromatin immunoprecipitation analysis showed that overexpression of Snail increased Snail recruitment to the serpinA1 promoter. Overexpression of serpinA1 increased the migration and invasion of gastric cancer cells, whereas knockdown of serpinA1 decreased invasion and migration. Moreover, serpinA1 increased mRNA levels and release of metalloproteinase-8 in gastric cancer cells. Serpin peptidase inhibitor clade A member 1 was observed in the cytoplasm of tumour cells and the stroma by immunohistochemistry. Enhanced serpinA1 expression was significantly associated with increased tumour size, advanced T stage, perineural invasion, lymphovascular invasion, lymph node metastases, and shorter overall survival. Conclusions: Serpin peptidase inhibitor clade A member 1 induces the invasion and migration of gastric cancer cells and its expression is associated with the progression of gastric cancer. These results may provide a potential target to prevent invasion and metastasis in gastric cancer.
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Affiliation(s)
- C H Kwon
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - H J Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - J R Lee
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - H K Kim
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - T Y Jeon
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - H-J Jo
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - D H Kim
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - G H Kim
- Department of Internal Medicine, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - D Y Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
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Nam S, Chang HR, Kim KT, Kook MC, Hong D, Kwon CH, Jung HR, Park HS, Powis G, Liang H, Park T, Kim YH. PATHOME: an algorithm for accurately detecting differentially expressed subpathways. Oncogene 2014; 33:4941-51. [PMID: 24681952 PMCID: PMC4182295 DOI: 10.1038/onc.2014.80] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 02/11/2014] [Accepted: 02/14/2014] [Indexed: 12/18/2022]
Abstract
The translation of high-throughput gene expression data into biologically meaningful information remains a bottleneck. We developed a novel computational algorithm, PATHOME, for detecting differentially expressed biological pathways. This algorithm employs straightforward statistical tests to evaluate the significance of differential expression patterns along subpathways. Applying it to gene expression data sets of gastric cancer (GC), we compared its performance with those of other leading programs. Based on a literature-driven reference set, PATHOME showed greater consistency in identifying known cancer-related pathways. For the WNT pathway uniquely identified by PATHOME, we validated its involvement in gastric carcinogenesis through experimental perturbation of both cell lines and animal models. We identified HNF4α-WNT5A regulation in the cross-talk between the AMPK metabolic pathway and the WNT signaling pathway, and further identified WNT5A as a potential therapeutic target for GC. We have demonstrated PATHOME to be a powerful tool, with improved sensitivity for identifying disease-related dysregulated pathways.
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Affiliation(s)
- S Nam
- Cancer Genomics Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - H R Chang
- New Experimental Therapeutics Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - K-T Kim
- Molecular Epidemiology Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - M-C Kook
- Department of Pathology, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - D Hong
- Cancer Genomics Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - C H Kwon
- Cancer Genomics Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - H R Jung
- New Experimental Therapeutics Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - H S Park
- New Experimental Therapeutics Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
| | - G Powis
- Cancer Center, Sanford-Burnham Medical Research Institute, La Jolla, CA, USA
| | - H Liang
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - T Park
- Department of Statistics, Seoul National University, Kwanak-gu Seoul, Republic of Korea
| | - Y H Kim
- New Experimental Therapeutics Branch, National Cancer Center of Korea, Goyang-si Gyeonggi-do, Republic of Korea
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Kim SM, Kwon CH, Shin N, Park DY, Moon HJ, Kim GH, Jeon TY. Decreased Muc5AC expression is associated with poor prognosis in gastric cancer. Int J Cancer 2013; 134:114-24. [PMID: 23801416 DOI: 10.1002/ijc.28345] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 06/05/2013] [Indexed: 12/17/2022]
Abstract
Mucins reportedly play numerous key roles in carcinogenesis, including in tumor invasion, regulation of differentiation and tumor cell proliferation. We investigated the effect of Muc5AC, a secreted mucin, on the invasiveness/migratory capability of gastric cancer cells and the prognostic significance of Muc5AC in gastric cancer patients. The clinicopathological and prognostic significance of Muc5AC expression was validated using immunohistochemical analysis in 412 gastric cancer patients. Differential gene expression was investigated using complementary DNA microarray analysis of 48 fresh tumor tissue samples. Silencing of Muc5AC by using a small hairpin RNA-containing lentivirus increased the invasion and migration of SNU216 and AGS cells as well as Akt phosphorylation and the expression of vascular endothelial growth factor and matrix metalloproteinase-7, which were blocked by inhibitors of the phosphatidylinositol 3-kinase/Akt pathway. Loss of Muc5AC expression was significantly associated with tumor progression (advanced T stage; p = 0.004), lymph node metastases (p = 0.001), lymphovascular invasion (p < 0.0001), and increased tumor size (p = 0.027). Lower MUC5AC expression was identified as an independent poor prognostic factor in diffuse-type gastric cancer by using the Cox regression proportional hazard model (hazard ratio, 2.39; p = 0.043). Complementary DNA microarray analysis revealed 86 differentially expressed genes, including genes related to metastasis and invasion, in gastric cancer tissues with high (≥25%) and low (<25%) Muc5AC expression levels. Low Muc5AC expression increased the invasion and migration of gastric cancer cells and could be a useful biomarker of poor prognosis in gastric cancer.
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Affiliation(s)
- Sung Mi Kim
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Busan, Korea
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Kwon CH, Moon HJ, Park HJ, Choi JH, Park DY. Abstract 3793: S100A8/A9 promotes invasion and migration through p38 MAPK-dependent NF-κB activation in gastric cancer cells. Cancer Res 2013. [DOI: 10.1158/1538-7445.am2013-3793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
S100A8 and S100A9 (S100A8/A9) are low-molecular weight members of the S100 family of calcium-binding proteins. Recent studies have reported S100A8/A9 promote tumorigenesis. We have previously reported that S100A8/A9 is mostly expressed in stromal cells and inflammatory cells between gastric tumor cells. However, the role of environmental S100A8/A9 in gastric cancer has not been defined. We observed in the present study the effect of S100A8/A9 on migration and invasion of gastric cancer cells. S100A8/A9 treatment increased migration and invasion at lower concentrations that did not affect cell proliferation and cell viability. S100A8/A9 caused activation of p38 mitogen-activated protein kinase (MAPK) and nuclear factor-κB (NF-κB). The phosphorylation of p38 MAPK was not affected by the NF-κB inhibitor Bay whereas activation of NF-κB was blocked by p38 MAPK inhibitor SB203580, indicating that S100A8/A9-induced NF-κB activation is mediated by phosphorylation of p38 MAPK. S100A8/A9-induced cell migration and invasion was inhibited by SB203580 and Bay, suggesting that activation of p38 MAPK and NF-κB is involved in the S100A8/A9 induced cell migration and invasion. S100A8/A9 caused an increase in matrix metalloproteinase 2 (MMP2) and MMP12 expression, which were inhibited by SB203580 and Bay. S100A8/A9-induced cell migration and invasion was inhibited by MMP2 siRNA and MMP12 siRNA, indicating that MMP2 and MMP12 is related to the S100A8/A9 induced cell migration and invasion. Taken together, these results suggest that S100A8/A9 promotes cell migration and invasion through p38 MAPK-dependent NF-κB activation leading to an increase of MMP2 and MMP12 in gastric cancer.
Citation Format: Chae Hwa Kwon, Hyun Jung Moon, Hye Ji Park, Jin Hwa Choi, Do Youn Park. S100A8/A9 promotes invasion and migration through p38 MAPK-dependent NF-κB activation in gastric cancer cells. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr 3793. doi:10.1158/1538-7445.AM2013-3793
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Affiliation(s)
- Chae Hwa Kwon
- Cancer Research Institute, Pusan Naitonal University Hospital, Busan, Republic of Korea
| | - Hyun Jung Moon
- Cancer Research Institute, Pusan Naitonal University Hospital, Busan, Republic of Korea
| | - Hye Ji Park
- Cancer Research Institute, Pusan Naitonal University Hospital, Busan, Republic of Korea
| | - Jin Hwa Choi
- Cancer Research Institute, Pusan Naitonal University Hospital, Busan, Republic of Korea
| | - Do Youn Park
- Cancer Research Institute, Pusan Naitonal University Hospital, Busan, Republic of Korea
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Kwon CH, Shin NR, Jeong EH, Choi CI, Moon HJ, Chu IS, Kim GH, Jeon TY, Lee JH, Park DY. Abstract 413: Overexpression of Snail is associated with lymph node metastasis and poor prognosis in patients with gastric cancer. Cancer Res 2013. [DOI: 10.1158/1538-7445.am2013-413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Epithelial-mesenchymal transition (EMT) plays a significant role in tumor progression and invasion. Snail is a known regulator of EMT in various malignant tumors. This study investigated the role of Snail in gastric cancer.
Methods: We examined the effects of silenced or overexpressed Snail using lenti-viral constructs in gastric cancer cells. Immunohistochemical analysis of tissue microarrays from 314 patients with gastric adenocarcinoma (GC) was used to determine Snail's clinicopathological and prognostic significance. Differential gene expression in 45 GC specimens with Snail overexpression was investigated using cDNA microarray analysis.
Results: Silencing of Snail by shRNA decreased invasion and migration in GC cell lines. Conversely, Snail overexpression increased invasion and migration of gastric cancer cells, in line with increased VEGF and MMP11. Snail overexpression (≥75% positive nuclear staining) was also significantly associated with tumor progression (P < 0.001), lymph node metastases (P = 0.002), lymphovascular invasion (P = 0.002), and perineural invasion (P = 0.002) in the 314 GC patients, and with shorter survival (P = 0.023). cDNA microarray analysis revealed 213 differentially expressed genes in GC tissues with Snail overexpression, including genes related to metastasis and invasion.
Conclusion: Snail significantly affects invasiveness/migratory ability of GCs, and may also be used as a predictive biomarker for prognosis or aggressiveness of GCs.
Citation Format: Chae Hwa Kwon, Na Ri Shin, Eun Hui Jeong, Chang In Choi, Hyun Jung Moon, In Sun Chu, Gwang Ha Kim, Tae Yong Jeon, Jae Hyuk Lee, Do Youn Park. Overexpression of Snail is associated with lymph node metastasis and poor prognosis in patients with gastric cancer. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr 413. doi:10.1158/1538-7445.AM2013-413
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Affiliation(s)
- Chae Hwa Kwon
- 1Cancer Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Na Ri Shin
- 2Department of Pathology, Pusan National University Hospital, Busan, Republic of Korea
| | - Eun Hui Jeong
- 3Department of Pathology, Cheonam National University Hospital, Gwangju, Republic of Korea
| | - Chang In Choi
- 4Department of Surgery, Pusan National University Hospital, Busan, Republic of Korea
| | - Hyun Jung Moon
- 1Cancer Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - In Sun Chu
- 5Korean Bioinformation Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Gwang Ha Kim
- 6Department of Internal Medicine, Pusan National University Hospital, Busan, Republic of Korea
| | - Tae Yong Jeon
- 4Department of Surgery, Pusan National University Hospital, Busan, Republic of Korea
| | - Jae Hyuk Lee
- 3Department of Pathology, Cheonam National University Hospital, Gwangju, Republic of Korea
| | - Do Youn Park
- 2Department of Pathology, Pusan National University Hospital, Busan, Republic of Korea
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Choi JH, Shin NR, Moon HJ, Kwon CH, Kim GH, Song GA, Jeon TY, Kim DH, Kim DH, Park DY. Identification of S100A8 and S100A9 as negative regulators for lymph node metastasis of gastric adenocarcinoma. Histol Histopathol 2013; 27:1439-48. [PMID: 23018243 DOI: 10.14670/hh-27.1439] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
With increasing therapeutic use of minimally invasive therapy for treatment of early gastric cancer, prediction of lymph node metastasis is important. In search of tissue biomarkers for prediction of lymph node metastasis of gastric adenocarcinoma, we analyzed gastric adenocarcinoma tissue using proteomic methods. We have done 2D-PAGE and MALDI-TOF MS analysis in matched normal and gastric cancer tissues. We also evaluated the clinicopathological significance of expression of S100A8 and S100A9 in gastric adenocarcinoma using a tissue microarray of 218 gastric adenocarcinoma specimens. Cell invasion and migration assay were performed to confirm functional role of S100A8 and S100A9 using small hairpin RNA lentivirus. We identified 8 up-regulated and 5 down-regulated proteins in gastric cancer tissues compared to matched normal mucosa. Of these, expression of S100A8 and S100A9 occurred mainly in stromal cells and inflammatory cells between tumor cells. Correlation was observed between small lesion size, decreased depth of invasion, a tendency to absence of lymphovascular tumor emboli, a decrease in perineural invasion and lymph node metastasis, and expression of stromal S100A8. In addition, increased expression of stromal S100A9 in gastric adenocarcinoma was associated with small lesion size and a decrease in lymph node metastasis. Functional analysis confirmed that down-regulation of S100A8 and S100A9 by small hairpin RNA lentivirus induced an increase of migration and invasion in gastric cancer cell lines. Taken together, these findings suggest that S100A8 and S100A9 are negative regulators of lymph node metastasis of gastric adenocarcinoma and can be used as biomarkers for prediction of lymph node metastasis in gastric adenocarcinoma.
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Affiliation(s)
- Jin Hwa Choi
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, Busan, Korea
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Kwon CH, Moon HJ, Park HJ, Choi JH, Park DY. S100A8 and S100A9 promotes invasion and migration through p38 mitogen-activated protein kinase-dependent NF-κB activation in gastric cancer cells. Mol Cells 2013; 35:226-34. [PMID: 23456298 PMCID: PMC3887919 DOI: 10.1007/s10059-013-2269-x] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 01/28/2013] [Accepted: 01/28/2013] [Indexed: 01/03/2023] Open
Abstract
S100A8 and S100A9 (S100A8/A9) are low-molecular weight members of the S100 family of calcium-binding proteins. Recent studies have reported S100A8/A9 promote tumorigenesis. We have previously reported that S100A8/A9 is mostly expressed in stromal cells and inflammatory cells between gastric tumor cells. However, the role of environmental S100A8/A9 in gastric cancer has not been defined. We observed in the present study the effect of S100A8/A9 on migration and invasion of gastric cancer cells. S100A8/ A9 treatment increased migration and invasionat lower concentrations that did not affect cell proliferation and cell viability. S100A8/A9 caused activation of p38 mitogenactivated protein kinase (MAPK) and nuclear factor-κB (NF-κB). The phosphorylation of p38 MAPK was not affected by the NF-κB inhibitor Bay whereas activation of NF-κB was blocked by p38 MAPK inhibitor SB203580, indicating that S100A8/A9-induced NF-κB activation is mediated by phosphorylation of p38 MAPK. S100A8/A9-induced cell migration and invasion was inhibited by SB203580 and Bay, suggesting that activation of p38 MAPK and NF-κB is involved in the S100A8/A9 induced cell migration and invasion. S100A8/A9 caused an increase in matrix metalloproteinase 2 (MMP2) and MMP12 expression, which were inhibited by SB203580 and Bay. S100A8/A9-induced cell migration and invasion was inhibited by MMP2 siRNA and MMP12 siRNA, indicating that MMP2 and MMP12 is related to the S100A8/A9 induced cell migration and invasion. Taken together, these results suggest that S100A8/A9 promotes cell migration and invasion through p38 MAPKdependent NF-κB activation leading to an increase of MMP2 and MMP12 in gastric cancer.
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Affiliation(s)
- Chae Hwa Kwon
- Department of Pathology, Pusan National University Hospital, Busan 602–739,
Korea
- Cancer Research Institute, Pusan National University Hospital and Pusan National University School of Medicine, Busan 602–739,
Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan 602–739,
Korea
| | - Hyun Jung Moon
- Department of Pathology, Pusan National University Hospital, Busan 602–739,
Korea
- Cancer Research Institute, Pusan National University Hospital and Pusan National University School of Medicine, Busan 602–739,
Korea
| | - Hye Ji Park
- Department of Pathology, Pusan National University Hospital, Busan 602–739,
Korea
- Cancer Research Institute, Pusan National University Hospital and Pusan National University School of Medicine, Busan 602–739,
Korea
| | - Jin Hwa Choi
- Department of Pathology, Pusan National University Hospital, Busan 602–739,
Korea
| | - Do Youn Park
- Department of Pathology, Pusan National University Hospital, Busan 602–739,
Korea
- Cancer Research Institute, Pusan National University Hospital and Pusan National University School of Medicine, Busan 602–739,
Korea
- Biomedical Research Institute, Pusan National University Hospital, Busan 602–739,
Korea
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Shin NR, Jeong EH, Choi CI, Moon HJ, Kwon CH, Chu IS, Kim GH, Jeon TY, Kim DH, Lee JH, Park DY. Overexpression of Snail is associated with lymph node metastasis and poor prognosis in patients with gastric cancer. BMC Cancer 2012; 12:521. [PMID: 23151184 PMCID: PMC3552976 DOI: 10.1186/1471-2407-12-521] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Accepted: 11/12/2012] [Indexed: 11/26/2022] Open
Abstract
Background Epithelial–mesenchymal transition (EMT) plays a significant role in tumor progression and invasion. Snail is a known regulator of EMT in various malignant tumors. This study investigated the role of Snail in gastric cancer. Methods We examined the effects of silenced or overexpressed Snail using lenti-viral constructs in gastric cancer cells. Immunohistochemical analysis of tissue microarrays from 314 patients with gastric adenocarcinoma (GC) was used to determine Snail’s clinicopathological and prognostic significance. Differential gene expression in 45 GC specimens with Snail overexpression was investigated using cDNA microarray analysis. Results Silencing of Snail by shRNA decreased invasion and migration in GC cell lines. Conversely, Snail overexpression increased invasion and migration of gastric cancer cells, in line with increased VEGF and MMP11. Snail overexpression (≥75% positive nuclear staining) was also significantly associated with tumor progression (P < 0.001), lymph node metastases (P = 0.002), lymphovascular invasion (P = 0.002), and perineural invasion (P = 0.002) in the 314 GC patients, and with shorter survival (P = 0.023). cDNA microarray analysis revealed 213 differentially expressed genes in GC tissues with Snail overexpression, including genes related to metastasis and invasion. Conclusion Snail significantly affects invasiveness/migratory ability of GCs, and may also be used as a predictive biomarker for prognosis or aggressiveness of GCs.
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Affiliation(s)
- Na Ri Shin
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, 1-10 Ami-Dong, Seo-Gu, Busan, 602-739, South Korea
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Shin M, Song SH, Kim JM, Kwon CH, Joh JW, Lee SK, Kim SJ. Clinical significance of proteinuria at posttransplant year 1 in kidney transplantation. Transplant Proc 2012; 44:610-5. [PMID: 22483450 DOI: 10.1016/j.transproceed.2011.11.060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
PURPOSE Proteinuria in the nontransplant population is a progressive renal disease. We analyzed the prevalence and clinical significance of proteinuria as well as factors related to its degree at posttransplant year 1 among kidney transplant recipients. METHODS We measured protein in a 24-hour urine among 644 recipients from January 1996 to December 2010. RESULTS Among 372 male and 272 female recipients, the mean amount of urinary protein was 424.4 ± 1010 mg/d (range, 13.88-8691) including 388 (60.2%) subjects with microproteinuria and the other 256 (39.8%) with overt proteinuria. Nephrotic range proteinuria was observed in 17 (2.6%) and nonnephritic range proteinuria, in 239 (37.1%) recipients. The latter cohort was categorized into low-grade proteinuria (n = 224; 34.8%) and high-grade proteinuria (n = 15; 2.3%). Proteinuria at posttransplant 1 year highly correlated with serum creatinine values at posttransplant years 1 and 2 as well as estimated glomerular filtration rate but not creatinine clearance at postoperative year 2. A greater incidence of graft loss was observed among recipients with more severe proteinuria. Males, recipients with anti-hepatitis C virus antibody, unrelated donors, anti-thymocyte immunoglobulin at the time of reperfusion, maintenance immunosuppression with cyclosporine or without mycophenolate mofetil were strongly associated with the amount of proteinuria. CONCLUSION This study demonstrated the prevalence of proteinuria in kidney transplant recipient to be high. The presence as well as level of proteinuria were predictive markers for inferior allograft function.
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Affiliation(s)
- M Shin
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
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Jeong JC, Kim SJ, Kim YK, Kwon CH, Kim KH. Lycii cortex radicis extract inhibits glioma tumor growth in vitro and in vivo through downregulation of the Akt/ERK pathway. Oncol Rep 2012; 27:1467-74. [PMID: 22266745 DOI: 10.3892/or.2012.1637] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2011] [Accepted: 12/22/2011] [Indexed: 11/05/2022] Open
Abstract
Lycii cortex radicis (LCR) is a traditional Korean medicinal herb. The present study was undertaken to examine the effect of an LCR extract on glioma cell growth and to determine its molecular mechanism in U87MG human glioma cells. The LCR extract resulted in apoptotic cell death in a dose- and time-dependent manner. The LCR extract-induced cell death was associated with generation of reactive oxygen species (ROS). Western blot analysis showed that the LCR extract caused downregulation of Akt and ERK. The LCR-induced cell death was prevented by transfection with the constitutively active forms of Akt and MEK. Oral administration of LCR extracts in subcutaneous U87MG xenograft models reduced glioma tumor volume. Taken together, these findings suggest that the LCR extract results in human glioma cell death through mechanisms involving ROS generation, downregulation of Akt and ERK, and caspase activation in vitro and reduces glioma tumor growth in vivo. These data suggest that the LCR extract may serve as a potential therapeutic agent for malignant human glioblastomas.
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Affiliation(s)
- Ji Cheon Jeong
- Department of Oriental Medicine, Dongguk University, Kyung Ju 780-714, Republic of Korea
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Lee S, Park JB, Kim EY, Joo SY, Shin EC, Kwon CH, Joh JW, Kim SJ. Monitoring of cytomegalovirus-specific CD8+ T-cell response with major histocompatibility complex pentamers in kidney transplant recipients. Transplant Proc 2012; 43:2636-40. [PMID: 21911137 DOI: 10.1016/j.transproceed.2011.05.051] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Accepted: 05/09/2011] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Cytomegalovirus (CMV) can reactivate causing serious clinical problems during immunosuppression. CMV-specific CD8(+) T cells play an important role in the control of CMV reactivation. Using pentameric major histocompatibility complex (MHC) peptide complexes, we investigated cellular immune responses to CMV among healthy individuals and kidney transplantation recipients in Korea, which is an endemic area of CMV infection. MATERIALS AND METHODS Analysis of CMV-specific T cells was performed on 28 healthy individuals and 40 recipients who bore human leukocyte antigen (HLA)-A2 or -A24. CMV pp65 pentamer-binding cells incubated with various monoclonal antibodies were measured by four-color flow cytometry. RESULTS Detectable levels of pentamer(+) CD8(+) T cells were present in 109/139 samples (78.4%) that stained with the A*02NLV-pentamer, while 15/67 samples (22.4%) stained with the A*24QYD-pentamer (P < .01). Among patients with HLA-A2, 22/24 (91.7%) samples showing positive CMV antigenemia revealed detectable pentamer(+) CD8(+) T cells, while 87/115 (75.7%) displaying negative CMV antigenemia had detectable pentamer(+) CD8(+) T cells (P = .04). There was no significant difference in percentages of pentamer(+) CD8(+) T cells between patients who did versus who did not experience episodes of CMV infection. The subpopulation of CMV-specific CD8(+) T cells in transplantation recipients was evaluated using phenotypic markers; memory cells comprised the majority of the CMV-specific CD8(+) T-cell population. CONCLUSION The A*02NLV-pentamer complex was useful to monitor CMV-specific T cells. However, MHC pentamer-based techniques did not provide a clear distinction between patients who are or are not at risk for CMV infection.
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Affiliation(s)
- S Lee
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Abstract
PURPOSE Alemtuzumab (Campath-1H), a humanized monoclonal antibody directed against CD52, is a lymphocyte-depleting agent currently being evaluated as an induction agent in solid organ transplantation. This study analyzed the clinical outcomes and effects on peripheral blood lymphocyte subset counts in adult deceased donor renal transplant recipients who received an alemtuzumab-based induction protocol. METHODS Eleven kidney alone or simultaneous pancreas-kidney transplant recipients received 20 mg alemtuzumab on postoperative days 0 and 1, followed by calcineurin inhibitor-based maintenance immunosuppression after postoperative day 5. We collected 1-year data including recipient and donor demographic features, renal function and adverse events including endocrine impact, incidence of acute rejection episodes, infections or malignancies as well as hematologic and late immunologic parameters for correlation with patient or graft survival. RESULTS Mean HLA mismatch was 3.6 and 8/11 deceased donors were of the extended criteria type. Only 2 (18%) recipients displayed delayed graft function with a failure of the serum creatinine to decrease by 25% on the first day; however, their long-term outcomes were similar to other nonaffected patients. Serious adverse events were absent; there was no hyperlipidemia or new-onset diabetes. We failed to observe an acute rejection. The 3 (27%) recipients with infectious complications experienced pericardial tuberculosis, urinary tract infection, or invasive pulmonary aspergillosis. Two (18%) cases of posttransplantation lymphoproliferative disease were diagnosed in this study during the follow-up. Overall patient and graft survival rates were both 91%. CONCLUSION This study demonstrated that preconditioning with antibody-depletion using alemtuzumab was efficient with satisfactory patient and graft survivals at 1 year. Alemtuzumab induction was safe even for recipients of extended criteria donor renal transplantation.
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Affiliation(s)
- M Shin
- Department of Surgery, Division of Transplant Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Ko JK, Choi CH, Kim YK, Kwon CH. The proteasome inhibitor MG-132 induces AIF nuclear translocation through down-regulation of ERK and Akt/mTOR pathway. Neurochem Res 2011; 36:722-31. [PMID: 21203833 DOI: 10.1007/s11064-010-0387-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/22/2010] [Indexed: 10/18/2022]
Abstract
Anticancer activity of proteasome inhibitors has been demonstrated in various cancer cell types. However, mechanisms by which they exert anticancer action were not fully understood. The present study was undertaken to examine the effect of the proteasome inhibitor MG-132 and the underlying mechanism in glioma cells. MG-132 caused alterations in mitochondrial membrane potential and apoptosis-inducing factor (AIF) nuclear translocation. MG-132 induced reduction in ERK and Akt activation. The transient transfection of constitutively active forms of MEK, an upstream of ERK, and Akt blocked the MG-132-induced cell death. Similarly to down-regulation of Akt, expression levels of mTOR were inhibited by MG-132. Addition of rapamycin, an inhibitor of mTOR, caused stimulation of the MG-132-induced cell death. There were no significant changes in levels of XIAP, survivin, and Bax. Overexpression of constitutively active forms of MEK and Akt blocked the MG-132-induced AIF nuclear translocation. These findings indicate that MG-132 induces AIF nuclear translocation through down-regulation of ERK and Akt/mTOR pathways. These data suggest that proteasome inhibitors may serve as potential therapeutic agents for malignant human gliomas.
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Affiliation(s)
- Jun Kyeung Ko
- Department of Neurosurgery, College of Medicine, Pusan National University, Pusan 602-739, Korea
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Jeong JC, Kim JW, Kwon CH, Kim TH, Kim YK. Fructus ligustri lucidi extracts induce human glioma cell death through regulation of Akt/mTOR pathway in vitro and reduce glioma tumor growth in U87MG xenograft mouse model. Phytother Res 2010; 25:429-34. [PMID: 20737659 DOI: 10.1002/ptr.3265] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2010] [Revised: 05/21/2010] [Accepted: 06/22/2010] [Indexed: 01/11/2023]
Abstract
The present study was undertaken to examine the effect of Fructus ligustri lucidi (FLL) extracts on glioma cell growth and to determine the underlying mechanism by which FLL extracts exert anticancer properties in human U87MG glioma cells. The FLL extracts resulted in cell death in a dose- and time-dependent manner. Western blot analysis showed that treatment with FLL extracts caused down-regulation of the phosphatidylinositol-3 kinase (PI3K)/Akt pathway. Overexpression of Akt prevented the cell death induced by the FLL extracts. The FLL extracts caused a decrease in the expression of mammalian target of rapamycin (mTOR) and the FLL extract-induced cell death was increased by the mTOR inhibitor rapamycin. The FLL extracts decreased the expression of survivin. Oral administration of FLL extracts in subcutaneous U87MG xenograft models reduced the glioma tumor volume. These findings indicate that the FLL extracts resulted in glioma cell death through regulation of the Akt/mTOR/survivin pathway in vitro and inhibited glioma tumor growth in vivo. These data suggest that the FLL extracts may serve as a potential therapeutic agent for malignant human gliomas.
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Affiliation(s)
- Ji Cheon Jeong
- Department of Oriental Medicine, Dongguk University, Kyung Ju, 780-714, Korea
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Choi IJ, Kim SY, Kwon CH, Kim YK. Rosiglitazone inhibits proliferation of renal proximal tubular cells via down-regulation of ERK and Akt. Ren Fail 2010; 32:103-11. [PMID: 20113275 DOI: 10.3109/08860220903391259] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Rosiglitazone has been reported to exert the protective effect against acute renal failure in animal models. However, the underlying mechanisms by which it protects the damaged kidney cells are poorly understood. The present study was therefore undertaken to examine the effect of rosiglitazone on cell proliferation and to determine its molecular mechanism in opossum kidney (OK) cells, an established renal proximal tubular cell line. Rosiglitazone treatment inhibited cell proliferation in a dose- and time-dependent manner, and such effects were not associated with induction of cell death. The anti-proliferative effect of rosiglitazone was accompanied by the cell cycle arrest at the G1 phase. Western blot analysis data showed that rosiglitazone caused down-regulation of extracellular signal-regulated kinase (ERK) and Akt pathway. Transfection of constitutively active forms of MEK (an upstream kinase of ERK) and Akt prevented the proliferation inhibition induced by rosiglitazone. Rosiglitazone facilitated the recovery of cells after cisplatin-mediated injury. Taken together, these data suggest that rosiglitazone induces inhibition of cell proliferation through ERK and Akt-dependent cell cycle arrest at the G1 phase. The cell cycle arrest may play a protective role in kidney cells by preventing injured cells from progressing in the cell cycle.
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Affiliation(s)
- Im Jeong Choi
- Department of Pediatrics, College of Medicine, Pusan National University, Pusan, 602-739, Korea
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44
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Jeong JC, Jang SW, Kim TH, Kwon CH, Kim YK. Mulberry Fruit (Moris fructus) Extracts Induce Human Glioma Cell Death In Vitro Through ROS-Dependent Mitochondrial Pathway and Inhibits Glioma Tumor Growth In Vivo. Nutr Cancer 2010; 62:402-12. [DOI: 10.1080/01635580903441287] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Park KS, Kim YS, Kim JH, Choi BK, Kim SH, Oh SH, Ahn YR, Lee MS, Lee MK, Park JB, Kwon CH, Joh JW, Kim KW, Kim SJ. Influence of human allogenic bone marrow and cord blood-derived mesenchymal stem cell secreting trophic factors on ATP (adenosine-5'-triphosphate)/ADP (adenosine-5'-diphosphate) ratio and insulin secretory function of isolated human islets from cadaveric donor. Transplant Proc 2010; 41:3813-8. [PMID: 19917393 DOI: 10.1016/j.transproceed.2009.06.193] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2009] [Accepted: 06/15/2009] [Indexed: 10/20/2022]
Abstract
Successful islet transplantation (ITx) is not only dependent on the number of islets, but also their quality, including viability, metabolic activity, and function. Islet quality decreases during cultivation after the isolation procedure. To overcome this obstacle, we established the practice of islet and mesenchymal stem cells (MSCs) coculture. This coculture condition improved the ATP (adenosine-5'-triphosphate)/ADP (adenosine-5'-diphosphate) ratio and insulin secretory function in vitro. It is believed that the enhancement of islet quality in islet-MSCs cocultures may be caused by the secretion of active agents by MSCs. Herein we have shown that interleukin-6 (IL-6), vascular endothelial growth factor-A (VEGF-A), hepatocyte growth factor (HGF), and transforming growth factor-beta (TGF-beta) were significantly increased as measured by enzyme-linked immunosorbent assay (ELISA) in MSCs-cultured medium, factors that have been shown to improve the survival, function, and angiogenesis/revascularization of islets. These results indicated that the quality of human islets was enhanced by trophic molecules secreted by MSCs, which influence the intracellular islet ATP content and insulin secretory function.
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Affiliation(s)
- K S Park
- Department of Molecular Medicine, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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Joo SY, Choi BK, Kang MJ, Jung DY, Park KS, Park JB, Choi GS, Joh J, Kwon CH, Jung GO, Lee SK, Kim SJ. Development of functional human immune system with the transplantations of human fetal liver/thymus tissues and expanded hematopoietic stem cells in RAG2-/-gamma(c)-/- MICE. Transplant Proc 2009; 41:1885-90. [PMID: 19545750 DOI: 10.1016/j.transproceed.2009.02.074] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2008] [Revised: 12/03/2008] [Accepted: 02/09/2009] [Indexed: 10/20/2022]
Abstract
BACKGROUND There is an increasing need for suitable animal models for the study of the human immune system and disease. The purpose of this study was to develop a practical in vivo model of human immune cell repopulation using ex vivo expanded human fetal liver-derived CD34(+) hematopoietic stem cells and subrenally coimplanted fetal liver/thymus tissues. METHODS Freshly isolated fetal liver-derived CD34(+) hematopoietic stem cells were frozen until injected and ex vivo expanded with various cytokines for 7 days. After fetal liver/thymus tissues were subrenally coimplanted into preirradiated Rag2(-/-)gamma(c)(-/-) mice, frozen and ex vivo expanded CD34(+) cells were injected intravenously. The peripheral blood of the mice was monitored for the detection of human cell engraftment using flow cytometry. Then we confirmed human T-cell function by in vitro function assays. RESULTS After fetal liver/thymus tissues were coimplanted into the irradiated Rag2(-/-)gamma(c)(-/-) mice, with frozen and ex vivo expanded CD34(+) hematopoietic stem cells, human cell engraftments were determined using hCD45 and multilineage markers. The cultured cells with the cytokine combination of stem cell factor, thrombopoietin, Flk2/Flk3 ligand (FL), and interleukin-3 showed stable and long-term engraftment compared to other combinations. The ex vivo expanded human fetal liver-derived CD34(+) hematopoietic stem cells, under our culture conditions, accomplished a large volume of expanded cells that were sustained, demonstrating self-renewal of the evaluated markers, which may have indicated long- term repopulation activity. CONCLUSION The results of this study demonstrated a practical mouse model of expanded human immune cells especially T cells in Rag2(-/-)gamma(c)(-/-) mice.
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Affiliation(s)
- S-Y Joo
- Transplantation Research Center, Samsung Biomedical Research Institute, Seoul, Korea
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Abstract
Pentoxifylline (PTX) has been reported to inhibit TNF-alpha production and prevent several types of acute renal failure. This study was undertaken to determine the effect of PTX on the cisplatin-induced acute renal failure in rabbits. Rabbits received a single injection of cisplatin (5 mg/kg, i.p.) with or without PTX pretreatment (30 mg/kg, i.v.). Alterations in renal function, apoptotic cell death, and TNF-alpha mRNA expression were measured at 24 or 48 h after cisplatin injection. Cisplatin caused an increase in BUN and serum creatinine levels, a reduction in GFR, and an increase in fractional Na+ excretion. Such changes were significantly attenuated by PTX pretreatment (30 mg/kg, i.p.) 30 min before and 24 h after cisplatin injection. Morphological evaluation showed that cisplatin injection induced diffuse proximal tubular necrosis and the effect was reduced by PTX pretreatment. Cisplatin induced apoptotic cell death in renal cortex and the effect was significantly prevented by PTX. Treatment of opossum kidney cells with cisplatin resulted in cell death, which was significantly prevented by PTX. The increase in lipid peroxidation and the decrease in renal blood flow induced by cisplatin were not affected by PTX. The expression of TNF-alpha mRNA was increased after cisplatin injection and the effect was inhibited by PTX pretreatment. These results suggest that cisplatin-induced acute renal failure in rabbits is associated with an induction of TNF-alpha-mediated apoptosis, and that PTX may exert a protective effect against cisplatin nephrotoxicity by inhibiting TNF-alpha production.
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Affiliation(s)
- Yong Keun Kim
- Department of Physiology, College of Medicine, Pusan National University, Pusan, Korea.
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Lee SJ, Kwon CH, Kim YK. Alterations in membrane transport function and cell viability induced by ATP depletion in primary cultured rabbit renal proximal tubular cells. Korean J Physiol Pharmacol 2009; 13:15-22. [PMID: 19885021 DOI: 10.4196/kjpp.2009.13.1.15] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This study was undertaken to elucidate the underlying mechanisms of ATP depletion-induced membrane transport dysfunction and cell death in renal proximal tubular cells. ATP depletion was induced by incubating cells with 2.5 mM potassium cyanide (KCN)/0.1 mM iodoacetic acid (IAA), and membrane transport function and cell viability were evaluated by measuring Na(+)-dependent phosphate uptake and trypan blue exclusion, respectively. ATP depletion resulted in a decrease in Na(+)-dependent phosphate uptake and cell viability in a time-dependent manner. ATP depletion inhibited Na(+)-dependent phosphate uptake in cells, when treated with 2 mM ouabain, a Na(+) pump-specific inhibitor, suggesting that ATP depletion impairs membrane transport functional integrity. Alterations in Na(+)-dependent phosphate uptake and cell viability induced by ATP depletion were prevented by the hydrogen peroxide scavenger such as catalase and the hydroxyl radical scavengers (dimethylthiourea and thiourea), and amino acids (glycine and alanine). ATP depletion caused arachidonic acid release and increased mRNA levels of cytosolic phospholipase A(2) (cPLA(2)). The ATP depletion-dependent arachidonic acid release was inhibited by cPLA(2) specific inhibitor AACOCF(3). ATP depletion-induced alterations in Na(+)-dependent phosphate uptake and cell viability were prevented by AACOCF(3). Inhibition of Na(+)-dependent phosphate uptake by ATP depletion was prevented by antipain and leupetin, serine/cysteine protease inhibitors, whereas ATP depletion-induced cell death was not altered by these agents. These results indicate that ATP depletion-induced alterations in membrane transport function and cell viability are due to reactive oxygen species generation and cPLA(2) activation in renal proximal tubular cells. In addition, the present data suggest that serine/cysteine proteases play an important role in membrane transport dysfunction, but not cell death, induced by ATP depletion.
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Affiliation(s)
- Sung Ju Lee
- Department of Physiology, MRC for Ischemic Tissue Regeneration, College of Medicine, Pusan National University, Busan 602-739, Korea
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Lee DR, Kwon CH, Park JY, Kim YK, Woo JS. 15-Deoxy-Delta(12,14)-prostaglandin J(2) induces mitochondrial-dependent apoptosis through inhibition of PKA/NF-kappaB in renal proximal epithelial cells. Toxicology 2009; 258:17-24. [PMID: 19167456 DOI: 10.1016/j.tox.2009.01.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2008] [Accepted: 01/05/2009] [Indexed: 11/30/2022]
Abstract
We have previously reported the cyclopentenone prostaglandin 15-deoxy-Delta(12,14)-prostaglandin J(2) (15d-PGJ(2)) induces renal proximal epithelial cell death through NF-kappaB inhibition. However, the upstream and down-stream signaling pathways that NF-kappaB inhibition mediates 15d-PGJ(2)-induced apoptosis remain to be defined. In the present study, we determined whether NF-kappaB inhibition induces cell death through the mitochondrial apoptotic pathway and whether protein kinase A (PKA) functions upstream of NF-kappaB inhibition by 15d-PGJ(2). The role of NF-kappaB inhibition in this apoptotic pathway was evaluated using NF-kappaB p65 transfected cells. 15d-PGJ(2) induced cell death by a PPARgamma-independent mechanism and the cell death was prevented by NF-kappaB p65 transfection. 15d-PGJ(2) treatment caused disruption of mitochondrial membrane potential, cytochrome c release, and caspase-3 activation, suggesting that 15d-PGJ(2) induces cell death through a mitochondria-dependent apoptotic mechanism. These changes by 15d-PGJ(2) were attenuated by NF-kappaB p65 transfection. 15d-PGJ(2) treatment resulted in an increase in Bax expression, which were blocked by NF-kappaB p65 transfection. 15d-PGJ(2) treatment caused PKA inhibition and 15d-PGJ(2)-induced cell death was enhanced by the PKA specific inhibitor H89. Inhibition of NF-kappaB by 15d-PGJ(2) was prevented by addition of forskolin, a PKA activator. Taken together, these results suggest that PKA-dependent NF-kappaB inhibition stimulates 15d-PGJ(2)-mediated mitochondrial apoptotic pathway through alterations in expression of the NF-kappaB target genes Bax.
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Affiliation(s)
- Dong Ryeol Lee
- Department of Physiology, College of Medicine, Pusan National University, Pusan 602-739, Republic of Korea
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Choi CH, Kwon CH, Kim YK. The PPARγ Agonist Rosiglitazone Inhibits Glioma Cell Proliferation and Migrationin vitroand Glioma Tumor Growthin vivo. Exp Neurobiol 2009. [DOI: 10.5607/en.2009.18.2.112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Chang Hwa Choi
- Department of Neurosurgery, Pusan National University College of Medicine, Busan 602-739, Korea
| | - Chae Hwa Kwon
- Department of Physiology, Pusan National University College of Medicine, Busan 602-739, Korea
| | - Yong Keun Kim
- Department of Physiology, Pusan National University College of Medicine, Busan 602-739, Korea
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