51
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Rim JH, Baik M, Yoon SO, Heo K, Song J. Clinical Utility of Bone Marrow Study in Gaucher Disease: A Case Report of Gaucher Disease Type 3 With Intractable Myoclonic Seizures. Ann Lab Med 2015; 36:177-9. [PMID: 26709268 PMCID: PMC4713854 DOI: 10.3343/alm.2016.36.2.177] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/17/2015] [Accepted: 11/10/2015] [Indexed: 11/26/2022] Open
Affiliation(s)
- John Hoon Rim
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Minyoul Baik
- Department of Neurology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sun Och Yoon
- Department of Pathology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Kyoung Heo
- Department of Neurology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jaewoo Song
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
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Gweon HM, Kim JA, Youk JH, Hong SW, Lim BJ, Yoon SO, Park YM, Son EJ. Can galectin-3 be a useful marker for conventional papillary thyroid microcarcinoma? Diagn Cytopathol 2015; 44:103-7. [PMID: 26681546 DOI: 10.1002/dc.23408] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 06/21/2015] [Revised: 11/16/2015] [Accepted: 11/24/2015] [Indexed: 11/09/2022]
Abstract
BACKGROUND Galectin-3 staining of fine-needle aspiration (FNA) samples is very useful for diagnosis of thyroid malignancy. As reported in several studies, galectin-3 is associated with prognostic factor in papillary thyroid carcinoma, but its expression and prognostic role has not been evaluated in papillary microcarcinoma (PTMC). This study was performed to investigate the prevalence of galectin-3 in preoperative ultrasonography (US)-guided FNA cytology and to evaluate the association between galectin-3 expression and prognostic factors of PTMC. METHODS Between January 2011 and December 2012, 440 conventional PTMCs which had undergone US-guided FNA with galectin-3 analysis and underwent subsequent surgery were enrolled. Preoperative US features and clinicopathologic results including extrathyroidal extension and lymph node metastasis were compared between galectin-3 positive and galectin-3 negative PTMC. RESULTS Of the 440 PTMCs, 201 (45.7%) PTMCs had galectin-3 positivity in preoperative FNA samples. There was no significant difference in US features between galectin-3 positive and negative PTMC. Galectin-3 expression had no significant association with prognostic factors such as extrathyroidal extension (44.8% vs. 44.8%, P = 0.999) and lymph node metastasis (25.9% vs. 26.8%, P = 0.914) in conventional PTMC. CONCLUSION Preoperative galectin-3 analysis using FNA cytology may be not advisable in patients with conventional PTMC.
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Affiliation(s)
- Hye Mi Gweon
- Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jeong-Ah Kim
- Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Ji Hyun Youk
- Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Soon Won Hong
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Beom Jin Lim
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sun Och Yoon
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Young Mi Park
- Department of Radiology, Busan PaiK Hospital, Inje University College of Medicine, Busan, Republic of Korea
| | - Eun Ju Son
- Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
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53
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Jung DH, Bae YS, Yoon SO, Lee YC, Kim H, Noh SH, Park H, Choi SH, Kim JH, Kim H. Poorly Differentiated Carcinoma Component in Submucosal Layer Should be Considered as an Additional Criterion for Curative Endoscopic Resection of Early Gastric Cancer. Ann Surg Oncol 2015; 22:772-777. [DOI: 10.1245/s10434-015-4794-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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54
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Yun BH, Jeon YE, Seo SK, Park JH, Yoon SO, Cho S, Choi YS, Lee BS. Effects of a Levonorgestrel-Releasing Intrauterine System on the Expression of Steroid Receptor Coregulators in Adenomyosis. Reprod Sci 2015; 22:1539-48. [DOI: 10.1177/1933719115589411] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Bo Hyon Yun
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Young Eun Jeon
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seok Kyo Seo
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Joo Hyun Park
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sun Och Yoon
- Department of Pathology, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - SiHyun Cho
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Young Sik Choi
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Byung Seok Lee
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
- Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
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55
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Choi SE, Hong SW, Yoon SO. Proposal of an appropriate decalcification method of bone marrow biopsy specimens in the era of expanding genetic molecular study. J Pathol Transl Med 2015; 49:236-42. [PMID: 26018515 PMCID: PMC4440935 DOI: 10.4132/jptm.2015.03.16] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [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: 01/27/2015] [Revised: 02/24/2015] [Accepted: 03/16/2015] [Indexed: 11/17/2022] Open
Abstract
Background: The conventional method for decalcification of bone specimens uses hydrochloric acid (HCl) and is notorious for damaging cellular RNA, DNA, and proteins, thus complicating molecular and immunohistochemical analyses. A method that can effectively decalcify while preserving genetic material is necessary. Methods: Pairs of bilateral bone marrow biopsies sampled from 53 patients were decalcified according to protocols of two comparison groups: EDTA versus HCl and RDO GOLD (RDO) versus HCl. Pairs of right and left bone marrow biopsy samples harvested from 28 cases were allocated into the EDTA versus HCl comparison group, and 25 cases to the RDO versus HCl comparison group. The decalcification protocols were compared with regards to histomorphology, immunohistochemistry, and molecular analysis. For molecular analysis, we randomly selected 5 cases from the EDTA versus HCl and RDO versus HCl groups. Results: The decalcification time for appropriate histomorphologic analysis was the longest in the EDTA method and the shortest in the RDO method. EDTA was superior to RDO or HCl in DNA yield and integrity, assessed via DNA extraction, polymerase chain reaction, and silver in situ hybridization using DNA probes. The EDTA method maintained intact nuclear protein staining on immunohistochemistry, while the HCl method produced poor quality images. Staining after the RDO method had equivocal results. RNA in situ hybridization using kappa and lambda RNA probes measured RNA integrity; the EDTA and RDO method had the best quality, followed by HCl. Conclusions: The EDTA protocol would be the best in preserving genetic material. RDO may be an acceptable alternative when rapid decalcification is necessary.
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Affiliation(s)
- Sung-Eun Choi
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - Soon Won Hong
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - Sun Och Yoon
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
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Sohn JH, Cho MY, Park Y, Kim H, Kim WH, Kim JM, Jung ES, Kim KM, Lee JH, Chan HK, Park DY, Joo M, Kim S, Moon WS, Kang MS, Jin SY, Kang YK, Yoon SO, Han H, Choi E. Prognostic Significance of Defining L-Cell Type on the Biologic Behavior of Rectal Neuroendocrine Tumors in Relation with Pathological Parameters. Cancer Res Treat 2015; 47:813-22. [PMID: 25715764 PMCID: PMC4614207 DOI: 10.4143/crt.2014.238] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [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: 08/22/2014] [Accepted: 11/04/2014] [Indexed: 02/08/2023] Open
Abstract
Purpose In 2010, the World Health Organization categorized L-cell type neuroendocrine tumors (NETs) as tumors of uncertain malignancy, while all others were classified as malignant. However, the diagnostic necessity of L-cell immunophenotyping is unclear, as are tumor stage and grade that may guide diagnosis and management. To clarify the predictive markers of rectal neuroendocrine neoplasms (NENs), 5- and 10-year overall survival (OS) was analyzed by pathological parameters including L-cell phenotype. Materials and Methods A total of 2,385 rectal NENs were analyzed from our previous multicenter study and a subset of 170 rectal NENs was immunophenotyped. Results In univariate survival analysis, tumor grade (p < 0.0001), extent (p < 0.0001), size (p < 0.0001), lymph node metastasis (p=0.0063), and L-cell phenotype (p < 0.0001) showed significant correlation with the prognosis of rectal NENs; however, none of these markers achieved independent significance in multivariate analysis. The 10-year OS of tumors of NET grade 1, < 10 mm, the mucosa/submucosa was 97.58%, 99.47%, and 99.03%, respectively. L-Cell marker, glucagon II (GLP-1&2), with a cut off score of > 10, is useful in defining L-Cell type. In this study, an L-cell immunophenotype was found in 83.5% of all rectal NENs and most, but not all L-cell type tumors were NET G1, small (< 10 mm) and confined to the mucosa/submucosa. Conclusion From these results, the biological behavior of rectal NENs does not appear to be determined by L-cell type alone but instead by a combination of pathological parameters.
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Affiliation(s)
| | - Jin Hee Sohn
- Department of Pathology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Mee-Yon Cho
- Department of Pathology, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Yangsoon Park
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hyunki Kim
- Department of Pathology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Woo Ho Kim
- Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Joon Mee Kim
- Department of Pathology, Department of Pathology, Inha University Hospital, Inha University School of Medicine, Incheon, Korea
| | - Eun Sun Jung
- Department of Pathology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Kyoung-Mee Kim
- Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jae Hyuk Lee
- Department of Pathology, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Korea
| | - Hee Kyung Chan
- Department of Pathology, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan, Korea
| | - Do Youn Park
- Department of Pathology, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea
| | - Mee Joo
- Department of Pathology, Inje University Ilsan Paik Hospital, Inje Univeristy College of Medicine, Goyang, Korea
| | - Sujin Kim
- Department of Pathology, Dong-A University Hospital, Dong-A University College of Medicine, Busan, Korea
| | - Woo Sung Moon
- Department of Pathology, Chonbuk National University Hospital, Chonbuk National University Medical School, Jeonju, Korea
| | - Mi Seon Kang
- Department of Pathology, Inje University Busan Paik Hospital,Inje University College of Medicine, Busan, Korea
| | - So-Young Jin
- Department of Pathology, Soon Chun Hyang University Hospital, Soon Chun Hyang University College of Medicine, Seoul, Korea
| | - Yun Kyung Kang
- Department of Pathology, Inje University Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Sun Och Yoon
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - HyeSeung Han
- Department of Pathology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - EunHee Choi
- Division of Statistics in Institute of ifestyle Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
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Park HS, Yoon SO, Lim BJ, Kim JH, Hong SW. The limitations of endoscopic ultrasound-guided fine needle aspiration cytology in the diagnosis of pancreatic serous cystadenoma: a brief case report. Korean J Pathol 2014; 48:405-8. [PMID: 25366082 PMCID: PMC4215972 DOI: 10.4132/koreanjpathol.2014.48.5.405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 06/27/2014] [Accepted: 07/01/2014] [Indexed: 11/17/2022]
Affiliation(s)
- Heae Surng Park
- Departments of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sun Och Yoon
- Departments of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Beom Jin Lim
- Departments of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Joo Hee Kim
- Departments of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Soon Won Hong
- Departments of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Seol SY, Lim JY, Yoon SO, Hong SW, Kim JW, Choi SH, Cho JY. Abstract 4718: ERO1L, a novel prognostic marker of gastric cancer patient survival, mediates cancer cell invasion and chemoresistance. Cancer Res 2014. [DOI: 10.1158/1538-7445.am2014-4718] [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
Gastric cancer is the second cause of cancer-related deaths worldwide. Even though within same stage, gastric cancer patients present diverse clinical manifestations and prognosis. Molecular markers will be important in predicting patients' outcomes and tailoring personalized treatments according to individual biology. In this study, we analyzed the gene expression profile of human gastric cancer (published on CCR) to identify potential biomarkers. We found that TXN family genes and ERO1L were significantly overexpressed and related to prognosis. We evaluated ERO1L significantly overexpressed in gastric cancer and ERO1L was very highly expressed in hypoxic condition. The other study has identified ERO1L as included in the small group of eight genes predicting poor survival of patients with pulmonary adenocarcinoma. We show that ERO1L is a prognostic marker for overall survival among patients with gastric cancer. To investigate the function of ERO1L gene in gastric cancer cell line (AGS and MKN1), we tested the effect of ERO1L expression on gastric cancer cells. To determine the biologic role of ERO1L in regulating cancer cell proliferation, stable transfection of shRNA and expression vector for ERO1L in gastric cancer cells. Our results showed that shERO1L decrease cell proliferation. Next, we tested whether or not the ERO1L gene is involved in progression to metastatic disease in gastric cancer, especially in tumorigenesis, including migration and invasion. In Functional studies, ERO1L silencing decrease gastric cancer cell migaration and invasion, whereas EROL expression significantly increase cell migration and invasiveness. We examined whether ERO1L plays a role in chemoresistance in gastric cancer cells. After silencing or overexpressing ERO1L, we carried out cell viability assays in gastric cancer cells with a panel of chemotherapy agents used to treat gastric cancer patients: a microtubule stabilizer (paclitaxel) and an antimetabilite (5-FU). Surprisingly, Silencing ERO1L expression led gastric cancer cells to become more sensitive to paclitaxel and 5-FU. In conclusion, our findings show that a prognostic molecular signature that can predict the poor progression of gastric cancer tumors. Furthermore, unequal distribution of expression patterns reflecting activation of ERO1L with different survival rates supports a personalized target therapy in gastric cancer with biomarker gene signature driven patient selection.
Citation Format: So-Young Seol, Jae Yun Lim, Sun Och Yoon, Soon Won Hong, Jong Won Kim, Seung Ho Choi, Jae Yong Cho. ERO1L, a novel prognostic marker of gastric cancer patient survival, mediates cancer cell invasion and chemoresistance. [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 4718. doi:10.1158/1538-7445.AM2014-4718
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Affiliation(s)
- So-Young Seol
- Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jae Yun Lim
- Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sun Och Yoon
- Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Soon Won Hong
- Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jong Won Kim
- Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seung Ho Choi
- Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jae Yong Cho
- Yonsei University College of Medicine, Seoul, Republic of Korea
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Park HS, Bae YS, Yoon SO, Lim BJ, Hong HJ, Ro JY, Hong SW. Usefulness of Nuclear Protein in Testis (NUT) Immunohistochemistry in the Cytodiagnosis of NUT Midline Carcinoma: A Brief Case Report. Korean J Pathol 2014; 48:335-8. [PMID: 25214871 PMCID: PMC4160602 DOI: 10.4132/koreanjpathol.2014.48.4.335] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 04/09/2014] [Accepted: 04/11/2014] [Indexed: 11/23/2022]
Affiliation(s)
- Heae Surng Park
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Yoon Sung Bae
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sun Och Yoon
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Beom Jin Lim
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun Jun Hong
- Department of Otolargnology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Y Ro
- Department of Pathology, The Methodist Hospital and Weill Medical College of Cornell University, Houston, TX, USA
| | - Soon Won Hong
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Oh E, Ro JY, Gardner JM, Kim JW, Jung WH, Yoon SO. Inflammatory myofibroblastic tumor of the appendix arising after treatment of gastric cancer: a case report and review of the literature. APMIS 2014; 122:657-9. [PMID: 24989630 DOI: 10.1111/apm.12205] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Accepted: 08/30/2013] [Indexed: 12/28/2022]
Abstract
Inflammatory myofibroblastic tumor (IMT) is a rare soft tissue neoplasm of uncertain malignant potential and unclear etiology. IMT involving the appendix is very rare. Herein, we report a case of IMT of the appendix in a gastric cancer patient who was treated with radical gastrectomy and adjuvant systemic chemotherapy. Rare cases of IMT associated with preceding events have been described in other organs/sites, but not in the appendix. A previous intra-abdominal operation for gastric cancer may contribute to the development of IMT in the appendix as seen in the present patient. To our knowledge, this is the first case of appendiceal IMT arising after a previous operation.
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Affiliation(s)
- Eunji Oh
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Kim YH, Choi SE, Yoon SO, Hong SW. A testing algorithm for detection of the B-type Raf kinase V600E mutation in papillary thyroid carcinoma. Hum Pathol 2014; 45:1483-8. [DOI: 10.1016/j.humpath.2014.02.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 02/18/2014] [Accepted: 02/28/2014] [Indexed: 10/25/2022]
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Kang J, Jeon TJ, Yoon SO, Lee KY, Sohn SK. An extragastrointestinal stromal tumor in the omentum with peritoneal seeding mimicking an appendiceal mucinous cancer with carcinomatosis. Ann Coloproctol 2014; 30:93-6. [PMID: 24851220 PMCID: PMC4022759 DOI: 10.3393/ac.2014.30.2.93] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2013] [Accepted: 11/24/2013] [Indexed: 11/11/2022] Open
Abstract
Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract. These tumors tend to present most frequently in the stomach, followed by the small intestine. GISTs can also arise from the omentum, retroperitoneum, mesentery, or pleura and are termed extragastrointestinal stromal tumors (EGISTs) when they do so. EGISTs arising from the omentum are very rare. Due to the limited incidence of EGISTs in the omentum, the diagnostic criteria are not well established, and making a correct diagnosis may be difficult. In this report, we present a case of an EGIST of the omentum with peritoneal metastasis that was initially suspected to be an appendiceal mucinous carcinoma with carcinomatosis on positron emission tomography/computed tomography imaging.
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Affiliation(s)
- Jeonghyun Kang
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Tae Joo Jeon
- Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Sun Och Yoon
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - Kang Young Lee
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Seung-Kook Sohn
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
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Park JH, Yoon SO, Son EJ, Kim HM, Nahm JH, Hong S. Incidence and malignancy rates of diagnoses in the bethesda system for reporting thyroid aspiration cytology: an institutional experience. Korean J Pathol 2014; 48:133-9. [PMID: 24868226 PMCID: PMC4026804 DOI: 10.4132/koreanjpathol.2014.48.2.133] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 03/29/2014] [Accepted: 03/31/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND The Bethesda System for Reporting Thyroid Cytopathology (BSRTC) uses six diagnostic categories to standardize communication of thyroid fine-needle aspiration (FNA) interpretations between clinicians and cytopathologists. Since several studies have questioned the diagnostic accuracy of this system, we examined its accuracy in our hospital. METHODS We calculated the incidences and malignancy rates of each diagnostic category in the BSRTC for 1,730 FNAs that were interpreted by four cytopathologists in Gangnam Severance Hospital between October 1, 2011, and December 31, 2011. RESULTS The diagnostic incidences of categories I-VI were as follows: 13.3%, 40.6%, 9.1%, 0.4%, 19.3%, and 17.3%, respectively. Similarly, the malignancy rates of these categories were as follows: 35.3%, 5.6%, 69.0%, 50.0%, 98.7%, and 98.9%, respectively. In categories II, V, and VI, there were no statistically significant differences in the ranges of the malignancy rates among the four cytopathologists. However, there were significant differences in the ranges for categories I and III. CONCLUSIONS Our findings suggest that institutions that use the BSRTC should regularly update their diagnostic criteria. We also propose that institutions issue an annual report of incidences and malignancy rates to help other clinicians improve the case management of patients with thyroid nodules.
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Affiliation(s)
- Ji Hye Park
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sun Och Yoon
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Eun Ju Son
- Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hye Min Kim
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Ji Hae Nahm
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - SoonWon Hong
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Kim BH, Jung WY, Lee H, Kang Y, Jang YJ, Hong SW, Jeong HJ, Yoon SO. Lysyl-tRNA synthetase (KRS) expression in gastric carcinoma and tumor-associated inflammation. Ann Surg Oncol 2014; 21:2020-7. [PMID: 24558064 DOI: 10.1245/s10434-014-3522-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Indexed: 12/28/2022]
Abstract
BACKGROUND Lysyl-tRNA synthetase (KRS) is an aminoacyl-tRNA synthetase (ARS) that is essential for protein synthesis during ligation of specific amino acids to their cognate tRNAs. Aberrant expression of ARSs is associated with various human cancers. METHODS Using immunohistochemical detection, the present study analyzed the clinical relevance of KRS expression in tumor cells and tumor-associated inflammatory cells (TAI) in 457 patients who underwent curative radical surgery and standard adjuvant therapy and who were observed on long-term follow-up. RESULTS High expression of KRS in tumor cells (tumor-KRS(+)) was noted in 43.3 % (198 of 457) of cases. High expression of KRS in tumor-associated inflammatory cells (TAI-KRS(+)) including macrophages/monocytes, CD4-positive T cells, and/or neutrophils was observed in 37.2 % (170 of 457) of cases. Status of KRS in the tumor and TAI revealed an association with the known clinicopathological parameters for prognosis of gastric cancer. Tumor-KRS(+) status correlated to shorter overall survival, especially in stage III to IV cancers (P = 0.003), while TAI-KRS(+) status correlated significantly to longer overall survival in gastric cancer (P = 0.049). Cases with tumor-KRS(+) and TAI-KRS(-) status showed significantly reduced survival rates compared to those of other cases (P = 0.010), and status of tumor-KRS(+) and TAI-KRS(-) was revealed as an independently poor prognostic factor of overall survival (P = 0.001). CONCLUSIONS KRS-related inflammation can be identified in a subset of gastric cancer. This may be a possible mechanism of immune surveillance against tumor progression. In addition, expression status of KRS in tumor and TAI may be an independent prognostic marker for gastric cancer patients.
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Affiliation(s)
- Baek-Hui Kim
- Department of Pathology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
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Oh EJ, Hong SW, Jeong HJ, Yoon SO. The diagnostic approach to fine-needle aspiration of malignant lymphoma: using cytomorphology and immunocytochemistry with cell transfer method. Diagn Cytopathol 2014; 42:671-9. [PMID: 24550126 DOI: 10.1002/dc.23110] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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: 08/20/2013] [Revised: 12/04/2013] [Accepted: 01/09/2014] [Indexed: 11/11/2022]
Abstract
Fine-needle aspiration (FNA) cytology is generally considered to be the screening tool for lymphoproliferative lesions. The differential and decisive diagnosis, however, of malignant lymphoma from benign reactive hyperplasia by FNA cytology is sometimes challenging. The diagnostic features compatible with lymphoma as opposed to reactive hyperplasia in FNA cytology were investigated with 31 cases of lymphoma and 31 cases of reactive hyperplasia, and immunocytochemistry with cell transfer method was additionally applied to FNA cytology. The predominance of large lymphocytes, the clustering of large lymphocytes, the presence of markedly large and/or highly pleomorphic cells, the presence of apoptotic and/or necrotic cell debris were considered characteristics of lymphomas, whereas the predominance of small lymphocytes and the presence of histiocytes were considered characteristics of reactive hyperplasia. Using these cytomorphologic characteristics, the diagnostic accuracy for malignant lymphoma in FNA cytology had a sensitivity of 80.6% and a specificity of 100%. By cell transfer method, one of Papanicolaou-stained slides could be used in immunocytochemistry for several markers. Using such methods, sensitivity of FNA cytology for lymphoma was upgraded to 100%, and decisive diagnoses of diffuse large B-cell lymphoma, Burkitt lymphoma, low grade B-cell lymphoma, T- or NK-cell non-Hodgkin lymphoma (NHL), or Hodgkin lymphoma was possible. Differential diagnosis of malignant lymphoma from reactive hyperplasia, and decisive diagnoses of high, and low grade B-cell NHL, T- or NK-cell NHL, and HL could be possible by FNA cytology with cytomorphology in conjunction with immunocytochemistry using cell transfer method.
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Affiliation(s)
- Eun Ji Oh
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Chang JH, Kim S, Koo J, Lane PJL, Yoon SO, Park AY, Kim KS, Kim MY. The chronicity of tonsillitis is significantly correlated with an increase in an LTi cell portion. Inflammation 2014; 37:132-41. [PMID: 24022597 DOI: 10.1007/s10753-013-9721-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The current study explored the relationship between lymphoid tissue inducer (LTi) cells and patients' clinical and immunological status. LTi cells are critical for lymphoid tissue development and maintenance of CD4 T cell-dependent immune responses. The percentage of CD117+CD3-CD56-CD127+ RORγ+ LTi cells isolated from human tonsils was determined and correlated with changes in other immune subsets and clinical factors. We found that the portion of LTi and CD4 T cells was significantly increased in chronic tonsillitis compared to non-inflamed tonsils. Additionally, the expression of OX40 by memory CD4 T cells and OX40 ligand (OX40L) and interleukin (IL)-22 by LTi cells was higher in chronically inflamed tonsils. The treatment for tonsillitis with ibuprofen did not alter LTi cell viability and the expression of OX40L and IL-22. These results demonstrate that during chronic inflammation, LTi cells are increased and express higher levels of OX40L and IL-22, and this is correlated with an increase in memory CD4 T cells.
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Abstract
The p75 neurotrophin receptor (p75(NTR)) regulates a wide range of cellular functions, including programmed cell death, axonal growth and degeneration, cell proliferation, myelination, and synaptic plasticity. The multiplicity of cellular functions governed by the receptor arises from the variety of ligands and co-receptors which associate with p75(NTR) and regulate its signaling. P75(NTR) promotes survival through interactions with Trk receptors, inhibits axonal regeneration via partnerships with Nogo receptor (Nogo-R) and Lingo-1, and promotes apoptosis through association with Sortilin. Signals downstream of these interactions are further modulated through regulated intramembrane proteolysis (RIP) of p75(NTR) and by interactions with numerous cytosolic partners. In this chapter, we discuss the intricate signaling mechanisms of p75(NTR), emphasizing how these signals are differentially regulated to mediate these diverse cellular functions.
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Affiliation(s)
- B R Kraemer
- Department of Biochemistry, Vanderbilt University School of Medicine, 625 Light Hall, Nashville, TN, 37232, USA
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Lim JY, Yoon SO, Seol SY, Hong SW, Kim JW, Choi SH, Lee JS, Cho JY. Overexpression of miR-196b and HOXA10 characterize a poor-prognosis gastric cancer subtype. World J Gastroenterol 2013; 19:7078-7088. [PMID: 24222951 PMCID: PMC3819543 DOI: 10.3748/wjg.v19.i41.7078] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 06/12/2013] [Accepted: 07/11/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To identify molecular biologic differences between two gastric adenocarcinoma subgroups presenting different prognoses through the analysis of microRNA and protein expression.
METHODS: Array technologies were used to generate 1146 microRNAs and 124 proteins expression profiles of samples from 60 patients with gastric cancer. For the integrative analysis, we used established mRNA expression data published in our previous study. Whole mRNA expression levels were acquired from microarray data for 60 identical gastric cancer patients. Two gastric adenocarcinoma subgroups with distinct mRNA expression profiles presented distinctly different prognoses. MicroRNA and protein expression patterns were compared between gastric cancer tissue and normal gastric tissue and between two different prognostic groups. Aberrantly expressed microRNA, associated mRNA, and protein in patients with poor-prognosis gastric cancer were validated by quantitative reverse transcription polymerase chain reaction and immunochemistry in independent patients.
RESULTS: We obtained the expression data of 1146 microRNAs and 124 cancer-related proteins. Four microRNAs were aberrantly expressed in the two prognostic groups and in cancer vs non-cancer tissues (P < 0.05). In the poor-prognosis group, miR-196b, miR-135b, and miR-93 were up-regulated and miR-29c* was down-regulated. miR-196b expression positively correlated with Homeobox A10 (HOXA10) expression (r = 0.726, P < 0.001), which was significantly increased in poor-prognosis patients (P < 0.001). Comparing gastric cancer with non-cancer tissues, 46/124 proteins showed differential expression (P < 0.05); COX2 (P < 0.001) and cyclin B1 (P = 0.017) were clearly over-expressed in the poor-prognosis group.
CONCLUSION: Co-activation of miR-196b and HOXA10 characterized a poor-prognosis subgroup of patients with gastric cancer. Elucidation of the biologic function of miR-196b and HOXA10 is warranted.
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Kim BH, Hong SW, Kim JW, Choi SH, Yoon SO. Oncologic safety of pylorus-preserving gastrectomy in the aspect of micrometastasis in lymph nodes at stations 5 and 6. Ann Surg Oncol 2013; 21:533-8. [PMID: 24008556 DOI: 10.1245/s10434-013-3252-7] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Indexed: 12/15/2022]
Abstract
BACKGROUND Pylorus-preserving gastrectomy (PPG) is a function-preserving gastrectomy for early gastric cancers (EGCs) that are preoperatively assessed as pN0 tumors and located in the middle portion of the stomach. In PPG, dissection of the lymph nodes at stations 5 and 6 is frequently incomplete, and this may be worrisome in terms of oncologic safety. METHODS We examined lymph nodes collected from stations 5 and 6 from 196 patients who had undergone conventional distal gastrectomy (CDG) for EGC located in the middle portion of the stomach and from 24 patients who had undergone PPG. RESULTS The average number of lymph nodes collected at station 5 was significantly lower with PPG than with CDG (0.08 vs. 1.32, respectively; P = 0.008). However, such a difference was not noted for station 6 nodes. The rate of macrometastasis was very low in all station 5 nodes (1 of 220, 0.45%) and station 6 nodes (1 of 220, 0.45%). Immunohistochemical analysis of cytokeratin in 109 cases of the CDG group and 21 cases of the PPG group showed that micrometastasis of single isolated tumor cell type was observed in only one station 6 lymph node of a patient who was initially diagnosed with pN0 EGC. There were no cases of micrometastasis in station 5 nodes. CONCLUSIONS The possibility of micrometastasis to station 5 and/or 6 lymph nodes may be negligible for EGC located in the middle portion of the stomach, and PPG thus might be the oncologically safe procedure when considering micrometastasis in remaining nodes in vivo at stations 5 and 6.
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Affiliation(s)
- Baek-Hui Kim
- Department of Pathology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
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Han JW, Jang SI, Ma DW, Yoon SO, Lee DK. Invaginated ampulla of Vater in synchronous malignant intraductal papillary mucinous neoplasm of the pancreas and common bile duct cancer. Endoscopy 2013; 45 Suppl 2 UCTN:E25-6. [PMID: 23468151 DOI: 10.1055/s-0032-1326106] [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: 12/10/2022]
Affiliation(s)
- J W Han
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Seol SY, Lim JY, Yoon SO, Hong SW, Kim JW, Choi SH, Cho JY. Abstract 1147: Expression of ERO1L gene is poor prognostic factor for gastric cancer. Cancer Res 2013. [DOI: 10.1158/1538-7445.am2013-1147] [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
Gastric cancer is the second cause of cancer-related deaths worldwide. Even though within same stage, gastric cancer patients present diverse clinical manifestations and prognosis. Molecular markers will be important in predicting patients’ outcomes and tailoring personalized treatments according to individual biology. In this study, we analyzed the gene expression profile of human gastric cancer (published on CCR) to identify potential biomarkers. We found that TXN family genes and ERO1L were significantly overexpressed and related to prognosis. We evaluated ERO1L significantly overexpressed in gastric cancer and ERO1L was very highly expressed in hypoxic condition. The other study has identified ERO1L as included in the small group of eight genes predicting poor survival of patients with pulmonary adenocarcinoma. To investigate the function of ERO1L gene in gastric cancer cell line (AGS, MKN1 and NCI-N87), we tested the effect of shRNA inhibition of ERO1L on gastric cancer cells. To determine the biologic role of ERO1L in regulating cancer cell proliferation, stable transfection of shRNA for ERO1L in gastric cancer cells. Our results showed that shERO1L decrease cell proliferation. Furthermore, Knock down expression by shERO1L have effects on regulating gastric cancer cell apoptosis. Next, we tested whether or not the ERO1L gene is involved in progression to metastatic disease in gastric cancer,especially in late tumorigenesis, including migration and invasion. As a results, Knock down expression for ERO1L significantly decreased the migration and invasiveness of gastric cancer cells. In conclusion, our findings show that a prognostic molecular signature that can predict the poor progression of gastric cancer tumors. Furthermore, unequal distribution of expression patterns reflecting activation of ERO1L with different survival rates supports a personalized target therapy in gastric cancer with biomarker gene signature driven patient selection. While further work is needed to elucidate the biological contributions of these markers in. in vivo, the results presented here provide a basis for future investigations of the functional and clinical effect of new target genes in gastric cancer.
Citation Format: So-Young Seol, Jae Yun Lim, Sun Och Yoon, Soon Won Hong, Jong Won Kim, Seung Ho Choi, Jae Yong Cho. Expression of ERO1L gene is poor prognostic factor for 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 1147. doi:10.1158/1538-7445.AM2013-1147
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Affiliation(s)
- So-Young Seol
- Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jae Yun Lim
- Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sun Och Yoon
- Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Soon Won Hong
- Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jong Won Kim
- Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seung Ho Choi
- Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jae Yong Cho
- Yonsei University College of Medicine, Seoul, Republic of Korea
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Lim JY, Yoon SO, Seol SY, Hong SW, Kim JW, Choi SH, Lee JS, Cho JY. Abstract 1961: Overexpression of miR-196b and HOXA10 characterize a poor-prognosis gastric cancer subtype. Cancer Res 2013. [DOI: 10.1158/1538-7445.am2013-1961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: Gastric cancer is composed of disease subgroups with heterogeneous clinical and biological behaviors. A previous study identified two subgroups with distinct gene-expression profiles strongly associated with prognosis. To identify molecular biologic differences between these two subgroups, we performed an integrative analysis of mRNA, microRNA, and protein expression.
Methods: Array technologies were used to generate microRNA and protein expression profiles of frozen tissue samples from 60 patients with gastric cancer. All patients underwent curative gastric resection in 2005 and distributed from stage I to IV and their clinical characteristics were collected. BRB-ArrayTools were used for microarray data analysis. Data was compared between gastric cancer tissue and normal gastric tissue and also between two different prognostic groups. Aberrantly expressed microRNA and associated mRNA in patients with poor-prognosis gastric cancer were validated by quantitative RT-PCR and tissue microarray, respectively.
Results: Four microRNAs were aberrantly expressed in gastric cancer tissue, especially poor prognostic group (P < 0.05). In the poor-prognosis subgroup, miR-196b showed the most significantly high expression patterns and also miR-135b, miR-93. On the contrary, miR-29c* was down-regulated. MiR-196b expression was positively correlated with HOXA10 expression (r = 0.726; P < 0.001), which was significantly increased in poor-prognosis patients (P < 0.001). HOXA10 protein-positive expression was identified in 56 of 368 gastric cancer tissue microarray samples. In reverse-phase protein array, 46/124 proteins were expressed differently (P < 0.05); COX2 (P < 0.001) and cyclin B1 (P = 0.017) were clearly over-expressed in the poor-prognosis group.
Conclusion: Integrative analysis of RNA and protein expression profile facilitates interpretation of the molecular biologic heterogeneity of cancer. Co-activation of miR-196b and HOXA10 characterized a poor-prognosis subgroup of patients with gastric cancer. As HOXA10 is involved in the proliferation of hematopoietic stem cells and progenitor cells, the relevance of hematopoietic progenitor cell and gastric cancer development/progression should be further investigated.
Citation Format: Jae Yun Lim, Sun Och Yoon, So-Young Seol, Soon Won Hong, Jong Won Kim, Seung Ho Choi, Ju-Seog Lee, Jae Yong Cho. Overexpression of miR-196b and HOXA10 characterize a poor-prognosis gastric cancer subtype. [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 1961. doi:10.1158/1538-7445.AM2013-1961
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Affiliation(s)
- Jae Yun Lim
- 1Gangnam Severance Hosp. Yonsei University, Seoul, Republic of Korea
| | - Sun Och Yoon
- 1Gangnam Severance Hosp. Yonsei University, Seoul, Republic of Korea
| | - So-Young Seol
- 1Gangnam Severance Hosp. Yonsei University, Seoul, Republic of Korea
| | - Soon Won Hong
- 1Gangnam Severance Hosp. Yonsei University, Seoul, Republic of Korea
| | - Jong Won Kim
- 1Gangnam Severance Hosp. Yonsei University, Seoul, Republic of Korea
| | - Seung Ho Choi
- 1Gangnam Severance Hosp. Yonsei University, Seoul, Republic of Korea
| | - Ju-Seog Lee
- 2University of Texas MD Anderson Cancer Center, Houston, TX
| | - Jae Yong Cho
- 1Gangnam Severance Hosp. Yonsei University, Seoul, Republic of Korea
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Ma DW, Kim MK, Yoon SO, Rhee K, Yoon DS, Park H. [A case of double primary neuroendocrine tumor from duodenum and pancreas]. Korean J Gastroenterol 2013; 61:155-9. [PMID: 23575234 DOI: 10.4166/kjg.2013.61.3.155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Gastrointestinal neuroendocrine tumors arise from cells of the diffuse neuroendocrine system and can take place almost anywhere within the gastrointestinal tract. A 40-year-old man admitted to evaluate a duodenal subepithelial lesion which was incidentally found at health check-up. The polypoid duodenal subepithelial lesion, measuring about 7 mm, was removed by the endoscopic mucosal resection and the pathology confirmed a neuroendocrine tumor. Abdominopelvic computed tomography, done for staging work up, revealed a mass in the pancreatic head and the patient received pylorus preserving pancreaticoduodenectomy. Mass at the pancreas also found out to be neuroendocrine tumor but showed different histopathologic traits under immunohistochemical staining. The patient was also diagnosed as hyperparathyroidism and pituitary microadenoma. Finally, multiple endocrine neoplasia type 1 was confirmed, which was accompanied by duodenal neuroendocrine tumor.
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Affiliation(s)
- Dae Won Ma
- Departments of Internal Medicine, Pathology and Surgery,Yonsei University College of Medicine, Seoul, Korea
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Lee JH, Kim JH, Rhee K, Huh CW, Lee YC, Yoon SO, Youn YH, Park H, Lee SI. Undifferentiated early gastric cancer diagnosed as differentiated histology based on forceps biopsy. Pathol Res Pract 2013; 209:314-8. [PMID: 23598070 DOI: 10.1016/j.prp.2013.02.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [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] [Received: 10/20/2012] [Revised: 02/06/2013] [Accepted: 02/28/2013] [Indexed: 02/06/2023]
Abstract
Histological diagnosis before endoscopic resection (ER) is important to determine whether ER should be performed; indeed, the use of ER for undifferentiated early gastric cancer (UD-EGC) remains controversial. The aim was to investigate the clinicopathological features of UD-EGC in ER specimens, diagnosed as differentiated histology based on biopsy. 289 patients with EGC were treated by ER. Among them, 13.1% were diagnosed as UD-EGC after ER, and 18.4% of them showed differentiated histology based on biopsy before ER. We analyzed UD-EGC with differentiated histology (D-group) compared to undifferentiated histology (UD-group) on biopsy. The D-group showed moderately differentiated adenocarcinoma on biopsy and poorly differentiated adenocarcinoma in ER specimens. The D-group was significantly associated with older age, intestinal metaplasia in the surrounding mucosa, and larger size than the UD-group. Gland portion of tumor, mixed-type Lauren classification, submucosal invasion, lymphovascular invasion, and perineural invasion were more common in the D-group than in the UD-group. The number of biopsies was not different between the groups. When comparing the histopathological mapping findings and endoscopic appearances of the D-group, the zone of transition from differentiated to undifferentiated histology was frequently found on one or two peripheral sides of the lesion. In conclusion, areas of EGC greater than 20mm with moderately differentiated histology on biopsy may contain an undifferentiated component. UD-EGC with differentiated histology on biopsy may show more aggressive behavior than UD-EGC, consistent with the biopsy pathology. Biopsy at several peripheral sides of the lesion may be helpful for diagnosis of UD histology before treatment.
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Affiliation(s)
- Jung Ho Lee
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 135-720, Republic of Korea
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Koh MJ, Yoon SO, Jeon HM, Jeong HJ, Hong SW, Kim SH. Cytologic features of giant cell ependymoma: a case report and review of the literature. Korean J Pathol 2012; 46:507-13. [PMID: 23136581 PMCID: PMC3490116 DOI: 10.4132/koreanjpathol.2012.46.5.507] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Revised: 06/27/2012] [Accepted: 07/16/2012] [Indexed: 11/18/2022]
Abstract
Here, we present a case of anaplastic giant cell ependymoma (GCE) occurring in a 15-year-old woman. Squash smear slides for intraoperative frozen section diagnosis revealed oval to round cell clusters with a papillary structure in a fibrillary background. This was occasionally accompanied by the presence of bizarre pleomorphic giant cells with hyperchromatic nuclei and prominent intranuclear inclusions. These intranuclear inclusions were a key clue to diagnosis of ependymoma. Histologic analysis revealed features of a high-grade tumor with perivascular pseudorosettes and bizarre pleomorphic giant cells, which established the diagnosis of GCE. We performed a review of literatures about the cytologic features of GCE, including our case, thus proposing that intraoperative frozen diagnosis of GCE would be established by squash smear preparations featuring the mitosis and necrosis, as well as the high cellularity, and the presence of giant cells showing hyperchromatic nuclei with eosinophilic cytoplasm and intranuclear inclusions/pseudoinclusions.
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Affiliation(s)
- Myoung Ju Koh
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
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Lim JY, Yoon SO, Hong SW, Kim JW, Choi SH, Cho JY. Thioredoxin and thioredoxin-interacting protein as prognostic markers for gastric cancer recurrence. World J Gastroenterol 2012; 18:5581-8. [PMID: 23112551 PMCID: PMC3482645 DOI: 10.3748/wjg.v18.i39.5581] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 06/29/2012] [Accepted: 07/09/2012] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the potential of thioredoxin (TXN) and thioredoxin-interacting protein (TXNIP) expression as biomarkers for predicting gastric cancer recurrence.
METHODS: TXN and TXNIP expression levels were acquired from gene expression microarray data for 65 human gastric cancer tissues. We determined whether each gene expression level was associated with cancer recurrence and investigated the relationship between the two genes. For validation, the expression levels of TXN and TXNIP were measured by quantitative real-time reverse transcription polymerase chain reaction in 68 independent stage III gastric cancer patients. The correlation between gene expression and cancer prognosis was evaluated. Immunohistochemical staining was performed to investigate the protein expression levels of TXN and TXNIP and to characterize the expression patterns of each protein.
RESULTS: TXN was a prognosis-related gene (P = 0.009), whereas TXNIP, a TXN inhibitor, demonstrated a negative correlation with TXN in the gene expression microarray data. In the 68 stage III patients, the expression levels of both TXN and TXNIP had a statistically significant effect on recurrence-free survival (RFS, P = 0.008 and P = 0.036, respectively). The low TXN and high TXNIP expression group exhibited a better prognosis than the other groups, and the high TXN and low TXNIP expression group exhibited a poorer prognosis (P < 0.001 for RFS and P = 0.001 for overall survival). More than half of the patients in the simultaneously high TXN and low TXNIP expression group experienced a recurrence within 1 year after curative surgery, and the 5-year survival rate of the patients in this group was 29%, compared with 89% in the low TXN and high TXNIP expression group. The TXN protein was overexpressed in 65% of the gastric cancer tissues, whereas the TXNIP protein was underexpressed in 85% of the cancer cells. In a correlation analysis, TXN and TXNIP were highly correlated with many oncogenes and tumor suppressors as well as with genes related to energy, protein synthesis and autophagy.
CONCLUSION: TXN and TXNIP are promising prognostic markers for gastric cancer, and performing personalized adjuvant treatment based on TXN and TXNIP expression levels would be an effective practice in the treatment of gastric cancer.
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Lee H, Yoon SO, Jeong WY, Kim HK, Kim A, Kim BH. Immunohistochemical analysis of polycomb group protein expression in advanced gastric cancer. Hum Pathol 2012; 43:1704-10. [PMID: 22520951 DOI: 10.1016/j.humpath.2011.12.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Revised: 12/22/2011] [Accepted: 12/23/2011] [Indexed: 12/28/2022]
Abstract
The polycomb group proteins have recently captured the attention of cancer biologists. enhancer of zeste homologue 2 (EZH2) and B lymphoma Mo-MLV insertion region 1 homolog (BMI-1) are the best-characterized polycomb group proteins; their deregulation contributes to the development of many malignancies including gastric cancers. H3 trimethylation at lysine 27 and DNA methylase DNA methyltransferase 3B proteins are associated with the recruitment of polycomb group proteins. Overexpression of polycomb group proteins is associated with poor prognoses in some types of cancers but with favorable prognoses in others. In the present study, we investigated the expression of the polycomb group proteins EZH2 and BMI-1 and the associated proteins H3 trimethylation at lysine 27 and DNA methyltransferase 3B in advanced gastric cancers. Based on immunohistochemical detection, we evaluated the clinical relevance of these proteins in 178 cases of advanced gastric cancers that were managed with radical surgery and adjuvant systemic chemotherapy. BMI-1, enhancer of zeste homologue 2, H3 trimethylation at lysine 27, and DNA methyltransferase 3B proteins were overexpressed in the nuclei of gastric carcinoma compared with adjacent nonneoplastic gastric parenchyma. The high-level expression of BMI-1, enhancer of zeste homologue 2, H3 trimethylation at lysine 27, and DNA methyltransferase 3B proteins were frequently noted in advanced gastric cancer tissues (70.8%, 92.1%, 58.4%, and 64.6% of cases, respectively) and well intercorrelated in expression (P < .05). The expression level of BMI-1, enhancer of zeste homologue 2, and DNA methyltransferase 3B showed correlation with sex, gross type, and histologic type of the tumor among clinicopathologic variables. In terms of patient survival, low-level expression of enhancer of zeste homologue 2 was associated with cancer-related death (P = .018) and shorter overall survival (P = .005). Low-level expression of enhancer of zeste homologue 2 may represent a negative prognostic marker (P = .005) and indicate high risk in patients with advanced gastric cancer after surgery and adjuvant chemotherapy.
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Affiliation(s)
- Hyunjoo Lee
- Department of Pathology, Gangwon National University Hospital, Chuncheon 200-722, Korea
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Cho MY, Kim JM, Sohn JH, Kim MJ, Kim KM, Kim WH, Kim H, Kook MC, Park DY, Lee JH, Chang H, Jung ES, Kim HK, Jin SY, Choi JH, Gu MJ, Kim S, Kang MS, Cho CH, Park MI, Kang YK, Kim YW, Yoon SO, Bae HI, Joo M, Moon WS, Kang DY, Chang SJ. Current Trends of the Incidence and Pathological Diagnosis of Gastroenteropancreatic Neuroendocrine Tumors (GEP-NETs) in Korea 2000-2009: Multicenter Study. Cancer Res Treat 2012; 44:157-65. [PMID: 23091441 PMCID: PMC3467418 DOI: 10.4143/crt.2012.44.3.157] [Citation(s) in RCA: 156] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Accepted: 08/07/2012] [Indexed: 02/07/2023] Open
Abstract
Purpose As a result of various independently proposed nomenclatures and classifications, there is confusion in the diagnosis and prediction of biological behavior of gastroenteropancreatic neuroendocrine tumors (GEP-NETs). A comprehensive nationwide study is needed in order to understand the biological characteristics of GEP-NETs in Korea. Materials and Methods We collected 4,951 pathology reports from 29 hospitals in Korea between 2000 and 2009. Kaplan-Meier survival analysis was used to determine the prognostic significance of clinicopathological parameters. Results Although the GEP-NET is a relatively rare tumor in Korea, its incidence has increased during the last decade, with the most significant increase found in the rectum. The 10-year survival rate for well-differentiated endocrine tumor was 92.89%, in contrast to 85.74% in well differentiated neuroendocrine carcinoma and 34.59% in poorly differentiated neuroendocrine carcinoma. Disease related death was most common in the biliary tract (62.2%) and very rare in the rectum (5.2%). In Kaplan-Meier survival analysis, tumor location, histological classification, extent, size, mitosis, Ki-67 labeling index, synaptophysin expression, lymphovascular invasion, perineural invasion, and lymph node metastasis showed prognostic significance (p<0.05), however, chromogranin expression did not (p=0.148). The 2000 and 2010 World Health Organization (WHO) classification proposals were useful for prediction of the prognosis of GEP-NET. Conclusion The incidence of GEP-NET in Korea has shown a remarkable increase during the last decade, however, the distribution of tumors in the digestive system differs from that of western reports. Assessment of pathological parameters, including immunostaining, is crucial in understanding biological behavior of the tumor as well as predicting prognosis of patients with GEP-NET.
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Kim BH, Hong SW, Kim A, Choi SH, Yoon SO. Prognostic implications for high expression of oncogenic microRNAs in advanced gastric carcinoma. J Surg Oncol 2012; 107:505-10. [PMID: 22996433 DOI: 10.1002/jso.23271] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Accepted: 09/04/2012] [Indexed: 12/21/2022]
Abstract
BACKGROUND Aberrant expressions of specific microRNAs are recently known in many malignancies, including gastric carcinoma. The prognostic implication of oncogenic microRNA dysregulation was investigated in advanced gastric carcinomas undergoing radical resection and adjuvant systemic chemotherapy, and observed on long-term follow-up. METHODS The expression levels of miR-20a, miR-21, miR-25, miR-93, miR-103, miR-106a, miR-106b, miR-130b, miR-155, miR-221, and miR-222 were analyzed in formalin-fixed paraffin-embedded (FFPE) cancer tissues of 91 patients, using reverse transcription real-time PCR. RESULTS The high expression of miR-20a, miR-25, miR-93, miR-103, miR-106a, miR-106b, miR-130 was associated with lymph node metastasis (P < 0.05), and high expression of miR-155 was related to tumor penetration through serosa and lymph node metastasis (P < 0.05). Cases with high expression of miR-222 (P = 0.014) showed reduced 5-year survival rates. The high expression of miR-222 and miR-221 showed correlation with shorter metastasis-free survival (P = 0.039 and 0.033, respectively), and miR-222 high expression was related to reduced overall survival (P = 0.012). CONCLUSIONS The high expression of miR-20a, miR-25, miR-93, miR-103, miR-106a, miR-106b, miR-130, miR-155, miR-221, and miR-222 in AGC tissues may be a high risk factor associated with tumor penetration through serosa, lymph node metastasis, distant metastasis, and poor long-term survival in patients undergoing radical resection and adjuvant systemic chemotherapy.
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Affiliation(s)
- Baek-Hui Kim
- Department of Pathology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
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Huh CW, Jung DH, Kim JH, Lee YC, Kim H, Kim H, Yoon SO, Youn YH, Park H, Lee SI, Choi SH, Cheong JH, Noh SH. Signet ring cell mixed histology may show more aggressive behavior than other histologies in early gastric cancer. J Surg Oncol 2012; 107:124-9. [DOI: 10.1002/jso.23261] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Accepted: 08/16/2012] [Indexed: 12/14/2022]
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Lim JY, Yoon SO, Seol SY, Hong SW, Kim JW, Choi SH, Cho JY. Overexpression of the M2 isoform of pyruvate kinase is an adverse prognostic factor for signet ring cell gastric cancer. World J Gastroenterol 2012; 18:4037-43. [PMID: 22912555 PMCID: PMC3420001 DOI: 10.3748/wjg.v18.i30.4037] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 04/11/2012] [Accepted: 04/18/2012] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate M2 isoform of pyruvate kinase (PKM2) expression in gastric cancers and evaluate its potential as a prognostic biomarker and an anticancer target.
METHODS: All tissue samples were derived from gastric cancer patients underwent curative gastrectomy as a primary treatment. Clinical and pathological information were obtained from the medical records. Gene expression microarray data from 60 cancer and 19 non-cancer gastric tissues were analyzed to evaluate the expression level of PKM2 mRNA. Tissue microarrays were constructed from 368 gastric cancer patients. Immunohistochemistry was used to measure PKM2 expression and PKM2 positivity of cancer was determined by proportion of PKM2-positive tumor cells and staining intensity. Association between PKM2 expression and the clinicopathological factors was evaluated and the correlation between PKM2 and cancer prognosis was evaluated.
RESULTS: PKM2 mRNA levels were increased more than 2-fold in primary gastric cancers compared to adjacent normal tissues from the same patients (log transformed expression level: 7.6 ± 0.65 vs 6.3 ± 0.51, P < 0.001). Moreover, differentiated type cancers had significantly higher PKM2 mRNA compared to undifferentiated type cancers (log transformed expression level: 7.8 ± 0.70 vs 6.7 ± 0.71, P < 0.001). PKM2 protein was mainly localized in the cytoplasm of primary cancer cells and detected in 144 of 368 (39.1%) human gastric cancer cases. PKM2 expression was not related with stage (P = 0.811), but strongly correlated with gastric cancer differentiation (P < 0.001). Differentiated type cancers expressed more PKM2 protein than did the undifferentiated ones. Well differentiated adenocarcinoma showed 63.6% PKM2-positive cells; in contrast, signet-ring cell cancers showed only 17.7% PKM2-positive cells. Importantly, PKM2 expression was correlated with shorter overall survival (P < 0.05) independent of stage only in signet-ring cell cancers.
CONCLUSION: PKM2 expression might be an adverse prognostic factor for signet-ring cell carcinomas. Its function and potential as a prognostic marker should be further verified in gastric cancer.
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Kim BH, Bae YS, Kim SH, Jeong HJ, Hong SW, Yoon SO. Usefulness of Ki-67 (MIB-1) immunostaining in the diagnosis of pulmonary sclerosing hemangiomas. APMIS 2012; 121:105-10. [PMID: 23030396 DOI: 10.1111/j.1600-0463.2012.02945.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Accepted: 06/03/2012] [Indexed: 12/01/2022]
Abstract
Pulmonary sclerosing hemangioma (PSH) is an uncommon lung neoplasm with a clinical outcome that is generally benign. However, differentiating PSH from pulmonary carcinoma is sometimes difficult as both lesions share similar histopathologic and immunohistochemical features. In this study, we investigated the usefulness of Ki-67 (MIB-1) immunostaining in the diagnosis of PSH. We compared the staining pattern for Ki-67 (MIB-1) in 29 cases of typical PSH and 79 cases of pulmonary non-small cell carcinoma (NSCLC) using an immunohistochemical method on formalin-fixed paraffin-embedded tissues. In all studied PSH cases, we noted cell membrane and cytoplasmic staining for Ki-67 (MIB-1), but this was not observed in any of the NSCLC cases. The Ki-67 proliferation index was lower in PSH than in the NSCLC cases (mean, 1.1% vs mean, 5.5%; p < 0.001). These findings suggest that cell membrane and cytoplasmic staining for Ki-67 (MIB-1), as well as the Ki-67 proliferation index, may be useful for distinguishing PSH from pulmonary carcinoma.
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Affiliation(s)
- Baek-hui Kim
- Department of Pathology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
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Shin S, Kim J, Yoon SO, Kim YR, Lee KA. ALK-positive anaplastic large cell lymphoma with TPM3-ALK translocation. Leuk Res 2012; 36:e143-5. [PMID: 22591683 DOI: 10.1016/j.leukres.2012.04.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 03/30/2012] [Accepted: 04/16/2012] [Indexed: 10/28/2022]
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Seol SY, Lim JY, Yoon SO, Hong SW, Kim JW, Choi SH, Cho JY. Abstract 4536: Identification of new prognostic biomarker of gastric cancer by systems analysis. Cancer Res 2012. [DOI: 10.1158/1538-7445.am2012-4536] [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
Gastric cancer is one of the most common and cancer-related deaths worldwide and accounts for an estimated 800,000 deaths annually. Prognosis depends on the stage of disease. Even though within same stage, gastric cancer patients present diverse clinical manifestations and prognosis. To differentiate the malignant potential appropriately, many efforts have been made to select prognostic markers. Molecular markers will be important in predicting patients’ outcomes and personalized treatments according to individual biology. In this study, we analyzed the gene expression profile of human gastric cancer (published on CCR) to identify potential biomarkers which could be used to classify patients according to prognosis and also become new therapeutic targets. We found that TXN family genes and ERO1L were significantly overexpressed and related to prognosis. qRT-PCR and tissue microarray validated TXN overexpression and ERO1L have poor prognosis in gastric cancer. Finally, systems analysis revealed TXN family genes are highly correlated with many oncogene and tumor suppressor functional genes and shown relationship on energy and protein synthesis. Survival analysis based on Hierarchical-clustering of TXN family correlated mRNA expression genes revealed that TXN and TXNIP are significantly influenced the patient survival. We evaluated ERO1L and find out also significantly overexpressed in gastric tumor and suggest TXN family members are actively involved in gastric cancer. In vitro hypoxic experiment ERO1L was very highly expressed in hypoxic condition and this also supports TXN high expressed cancer cells are in hypoxic condition. In conclusion, our findings show that a prognostic molecular signature that can predict the poor progression of gastric cancer tumors. Furthermore, unequal distribution of expression patterns reflecting activation of TXN family and ERO1L with different survival rates supports a personalized target therapy in gastric cancer with biomarker gene signature driven patient selection. While further work is needed to elucidate the biological contributions of these markers, the results presented here provide a basis for future investigations of the functional and clinical effect of new target genes in gastric cancer.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 Mar 31-Apr 4; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2012;72(8 Suppl):Abstract nr 4536. doi:1538-7445.AM2012-4536
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Affiliation(s)
- So-Young Seol
- 1Gangnam Severance Hospital, Gastric Cancer Clinic, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jae Yun Lim
- 1Gangnam Severance Hospital, Gastric Cancer Clinic, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sun Och Yoon
- 2Gangnam Severance Hospital, Pathology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Soon Won Hong
- 2Gangnam Severance Hospital, Pathology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jong Won Kim
- 3Gangnam Severance Hospital, Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seung Ho Choi
- 3Gangnam Severance Hospital, Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jae Yong Cho
- 1Gangnam Severance Hospital, Gastric Cancer Clinic, Yonsei University College of Medicine, Seoul, Republic of Korea
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Lim JY, Yoon SO, Hong SW, Kim JW, Choi SH, Cho JY. Abstract 4540: Pyruvate kinase M2 (PKM2) associated with poor prognosis in gastric signet ring cell carcinoma. Cancer Res 2012. [DOI: 10.1158/1538-7445.am2012-4540] [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: PKM2 (M2 isoform of pyruvate kinase) was identified as a driver of aerobic glycolysis, leading to cell growth and tumor development. PKM2 is usually known to overexpress in cancer, however, there are still remaining questions about the function and the potential as anti-cancer treatment target. We investigated the expression status of PKM2 in gastric cancer tissues and evaluated the possibility of biomarker and anticancer target. Methods: Paraffin-embedded tissue microarray blocks of gastric adenocarcinoma tissue specimens were obtained from 363 gastric cancer patients. All patients underwent curative gastric resection from 1999 to 2007 and distributed from stage I to IV and their clinical characteristics were collected. IHC (Immunohistochemical) assay was performed to evaluate PKM2 expression levels. The correlation of PKM2 expression level with gastric cancer prognosis / stage / histology was evaluated. Results: In our previous microarray study using 60 gastric cancer tissues, we identified PKM2 mRNA overexpressed in cancer tissue than non-cancer tissue (P<0.01). In IHC assays, PKM2 expression level was classified to score 0 (negative, n=185), 1 (weak positive, n=136), and 2 (strong positive, n=42). 49% of gastric cancer tissues presented PKM2 expression (weak or strong positive). PKM2 expression had no relation with prognosis (p=0.913, recurrence free survival) and TNM stage (p=0.825). Intestinal and diffuse type cancer manifested different PKM2 expression pattern and signet ring cell carcinoma manifested 26.6% PKM2 expression. Within same Lauren classification, there was no significant difference of prognosis according to PKM2 expression except signet ring cell carcinoma. In signet ring cell cancer (n=78), PKM2 expression was related to poor overall survival (p=0.029) Conclusion: PKM2 protein expression was not correlated with gastric cancer prognosis. Only in signet ring cell gastric cancer, overexpressed PKM2 was associated with poor overall survival. The role of PKM2 should be further verified in signet ring cell gastric cancer model to find clinical significance in this subtype of gastric cancer.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 Mar 31-Apr 4; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2012;72(8 Suppl):Abstract nr 4540. doi:1538-7445.AM2012-4540
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Affiliation(s)
- Jae Yun Lim
- 1Gangnam Severance Hosp. Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sun Och Yoon
- 1Gangnam Severance Hosp. Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Soon Won Hong
- 1Gangnam Severance Hosp. Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jong Won Kim
- 1Gangnam Severance Hosp. Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seung Ho Choi
- 1Gangnam Severance Hosp. Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jae Yong Cho
- 1Gangnam Severance Hosp. Yonsei University College of Medicine, Seoul, Republic of Korea
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Chang MS, Byeon SJ, Yoon SO, Kim BH, Lee HS, Kang GH, Kim WH, Park KJ. Leptin, MUC2 and mTOR in appendiceal mucinous neoplasms. Pathobiology 2012; 79:45-53. [PMID: 22236547 DOI: 10.1159/000332739] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Accepted: 08/31/2011] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVE Leptin contributes to mucin production in colonic epithelium and regulates carcinogenesis via various signalling pathways. We evaluated the proteins involved in mucin-producing carcinogenesis and putative targets for molecular therapy in appendiceal mucinous neoplasms. METHODS Immunohistochemistry and fluorescence in situ hybridization were performed in 22 cases of appendiceal mucinous adenoma, 20 mucinous neoplasms of uncertain malignant potential and 14 mucinous adenocarcinomas. RESULTS Leptin, MUC2, MUC5AC, mTOR and ERK were more frequently immunopositive in mucinous adenocarcinomas compared with mucinous adenomas or mucinous neoplasms of uncertain malignant potential (p < 0.05). STAT3 revealed immunopositivity in 82% of tumours, regardless of tumour category. MUC2 immunopositivity was associated with pseudomyxoma peritonei (p < 0.05). None of the tumours exhibited c-kitimmunoexpression, amplification of Her2 or EGFR, or translocation of ALK. The mTOR-immunopositive group of patients had a lower rate of disease-free survival compared with the mTOR-immunonegative group (p < 0.05). CONCLUSIONS Leptin may collaborate with MUC2 and MUC5AC in mucin-producing carcinogenesis in an mTOR-, STAT3- and ERK-dependent manner. STAT3 may be activated early during tumorigenesis. MUC2 and mTOR (but not c-kit, Her2, EGFR and ALK) may represent targets for molecular therapy in pseudomyxoma peritonei and appendiceal mucinous adenocarcinoma, respectively.
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Affiliation(s)
- Mee Soo Chang
- Department of Pathology, Seoul National University Boramae Hospital, Seoul, Korea.
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Park YM, Rhee K, Yoon SO, Ha JY, Park SY, Lee JH, Jang SI. A Case of Biliary Papillomatosis with Cystic Dilatation of Bile Duct. Yeungnam Univ J Med 2012. [DOI: 10.12701/yujm.2012.29.2.136] [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: 11/04/2022] Open
Affiliation(s)
- Yoo Mi Park
- Department of Internal Medicine, Gangnam Severance hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Kwangwon Rhee
- Department of Internal Medicine, Gangnam Severance hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sun Och Yoon
- Department of Pathology, Gangnam Severance hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Ji Yoon Ha
- Department of Internal Medicine, Gangnam Severance hospital, Yonsei University College of Medicine, Seoul, Korea
| | - So Young Park
- Department of Internal Medicine, Gangnam Severance hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jung Ho Lee
- Department of Internal Medicine, Gangnam Severance hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sung Ill Jang
- Department of Internal Medicine, Gangnam Severance hospital, Yonsei University College of Medicine, Seoul, Korea
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Abstract
Heterotopic gastric mucosa has been described in all levels of the gastrointestinal tract. However, gastric heterotopia of the rectum is a rare finding. It is usually reported along with polyp located in the rectum between 5 and 8 cm from the anal verge. The most common symptom is painless rectal bleeding, and non-specific gastrointestinal symptoms may also be presented. We report an incidentally found case of a 46-year-old man without any gastrointestinal symptoms. The pathology showed gastric mucosa and squamous epithelium and focal intestinal metaplasia. This finding could be a clue as to the origins of the heterotopic gastric mucosa. Although there are no guidelines for treatment or the follow-up period, regular endoscopic surveillance is necessary for gastric cancer screening.
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Affiliation(s)
- Hee Sun Kim
- Health Promotion Center, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
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Chang H, Lee H, Yoon SO, Kim H, Kim A, Kim BH. BRAFV600E mutation analysis of liquid-based preparation–processed fine needle aspiration sample improves the diagnostic rate of papillary thyroid carcinoma. Hum Pathol 2012; 43:89-95. [DOI: 10.1016/j.humpath.2011.04.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2010] [Revised: 04/04/2011] [Accepted: 04/08/2011] [Indexed: 11/29/2022]
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Park JS, Lim JY, Park SK, Kim MK, Ko HS, Yoon SO, Kim JW, Choi SH, Cho JY. Prognostic factors of second and third line chemotherapy using 5-fu with platinum, irinotecan, and taxane for advanced gastric cancer. Cancer Res Treat 2011; 43:236-43. [PMID: 22247709 PMCID: PMC3253866 DOI: 10.4143/crt.2011.43.4.236] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [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: 07/20/2011] [Accepted: 09/28/2011] [Indexed: 12/19/2022] Open
Abstract
Purpose The aims of this study are to find out whether the sequence of chemotherapeutic regimens including second- and third-line taxane and irinotecan influences the survival of patients with unresectable gastric carcinoma and to identify clinical characteristics of patients with improved response. Materials and Methods Fifty gastric carcinoma patients who were treated by third-line sequential chemotherapy between November 2004 and July 2010 were enrolled in this study. Their overall survival (OS) and time to progression (TTP) were set up as primary and secondary end points. For the sequence of chemotherapy regimen, two arms were used. Arm A was defined as 5-fluorouracil (5-FU)+cisplatin (FP) or folinic acid, 5-FU and oxaliplati (FOLFOX), followed by folinic acid, 5-FU and irinotecan (FOLFIRI), and paclitaxel or docetaxel plus 5-FU, with or without epirubicin. Arm B was defined as FP or FOLFOX, followed by paclitaxel or docetaxel plus 5-FU, and FOLFIRI. Results The median OS of all patients was 16.0 months (95% confidence interval, 13.6 to 18.3 months), which is longer than historical control of patients who did not receive third-line chemotherapy. The sequence of second and third-line regimen, including irinotecan and taxane, did not present significant difference in OS or TTP after failure of 5-FU with platinum chemotherapy. In survival analysis of patients' clinicopathologic characteristics, poor prognosis was shown in patients with poorly differentiated histologic features, elevated serum carcinoembryonic level, and shorter TTP of first line chemotherapy. Conclusion It is possible for patients to respond differently to chemotherapy due to differences in clinical features and underlying gene expression profiles. Development of individualized chemotherapy regimens based on gene expression profiles is warranted.
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Affiliation(s)
- Ji Soo Park
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Kim JH, Lee YC, Kim H, Yoon SO, Kim H, Youn YH, Park H, Lee SI, Choi SH, Noh SH. Additive lymph node dissection may be necessary in minute submucosal cancer of the stomach after endoscopic resection. Ann Surg Oncol 2011; 19:779-85. [PMID: 21964889 DOI: 10.1245/s10434-011-2081-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Indexed: 12/27/2022]
Abstract
PURPOSE In early gastric cancer (EGC), minute submucosal (SM1) invasion of the stomach has been regarded as an expanded indication for endoscopic resection (ER). The exact prediction of SM1 invasion before ER may be difficult. Thus, SM1 invasion may be important to decide additive treatment after ER. This study was designed to investigate the incidence of lymph node metastasis (LNM) in SM1-EGC based on surgical specimens and to evaluate the factors that indicate additional treatment after ER. METHODS From May 2005 to December 2008, 1,676 patients with EGC underwent surgery at Severance and Gangnam Severance Hospital, Seoul, Korea. Among them, 126 patients were diagnosed with differentiated SM1-EGC. The clinicopathologic characteristics were analyzed with respect to LNM and lymphovascular invasion (LVI), which is a known independent risk factor for LNM. Intratumoral marker immunohistochemistry was examined as a predictor of LVI. RESULTS The mean SM1 invasion depth was 621.3 ± 745.6 μm. The LNM rates did not differ significantly between differentiated SM1-EGC (6.3%) and SM1-EGC (4.1%) meeting the expanded indication for ER. Female gender, moderate differentiation, LVI, and LVI grade were positively correlated with LNM. Female gender and elevated lesion morphology were associated with LVI. The expression levels of VEGF-C and OPHN1 were higher in LVI-positive tissues. CONCLUSIONS The LNM rate in differentiated SM1-EGC meeting the expanded ER criteria was 4.1% in the present study, indicating that additional lymph node dissection may be necessary after ER in some cases of SM1-EGC.
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Affiliation(s)
- Jie-Hyun Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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Lim JY, Yoon SO, Hong SW, Kim JW, Choi SH, Cho JY. Abstract 2268: Systems analysis identified Thioredoxin family genes as a prognostic signature and novel therapeutic target for gastric cancer. Cancer Res 2011. [DOI: 10.1158/1538-7445.am2011-2268] [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: Gastric cancer is the second cause of cancer-related deaths worldwide. After curative surgery, relapse occurs in a large number of patients except for early gastric cancer patients. Even though within the same stage, gastric cancer patients present diverse clinical manifestations and prognosis. The clinical diversity of gastric cancer arises from the molecular biological diversity, which is caused by changes in different genes. This study aimed to identify potential biomarkers which could be used to classify patients according to prognosis and also become new therapeutic targets.
Procedures: We obtained whole genome expression microarray data of 65 primary gastric adenocarcinoma patients and the results were validated by quantitative reverse transcription polymerase chain reaction experiment of 68 gastric cancer tissues. We uncovered prognostic subgroups of gastric cancer and identified expressions of a limited number of genes are significantly associated with prognosis. Immunohistochemical assay using 328 gastric cancer tissues was performed to validate protein levels of biomarker gene.
Results: A gene encoding thioredoxin (TXN) was found to be markedly elevated in many gastric cancer tissues and strongly related to poor prognosis (p=0.009) in univariate analysis. Conversely, thioredoxin interacting protein (TXNIP), TXN inhibitor, was significantly decreased in patients with poor prognosis. Systems analysis revealed TXN and TXNIP were highly correlated with many oncogenes and tumor suppressors and also with energy and protein synthesis. It was validated that TXN and TXNIP expression were significant prognostic biomarker even in the same stage patients. When patients were classified into the three groups by expression level of TXN and TXNIP, TXN low and TXNIP high expression group showed better prognosis than others; recurrence free survival (p<0.001) and overall survival (p=0.001). Hypoxia induced gene, ERO1-like (ERO1L), also highly correlated with TXN and this suggested that TXN and TXNIP were influenced by hypoxia in gastric cancer.
Conclusion: TXN and TXNIP are promising prognostic markers for gastric cancer and agents that target TXN or up modulate TXNIP could be used in target therapy for gastric cancer patients who are selected based on TXN and TXNIP gene signatures.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 102nd Annual Meeting of the American Association for Cancer Research; 2011 Apr 2-6; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2011;71(8 Suppl):Abstract nr 2268. doi:10.1158/1538-7445.AM2011-2268
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Affiliation(s)
- Jae Yun Lim
- 1Gangnam Severance Hosp., Seoul, Korea, Republic of
| | - Sun Och Yoon
- 1Gangnam Severance Hosp., Seoul, Korea, Republic of
| | | | - Jong Won Kim
- 1Gangnam Severance Hosp., Seoul, Korea, Republic of
| | | | - Jae Yong Cho
- 1Gangnam Severance Hosp., Seoul, Korea, Republic of
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94
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Yoon SO, Chun SM, Han EH, Choi J, Jang SJ, Koh SA, Hwang S, Yu E. Deregulated expression of microRNA-221 with the potential for prognostic biomarkers in surgically resected hepatocellular carcinoma. Hum Pathol 2011; 42:1391-400. [PMID: 21458843 DOI: 10.1016/j.humpath.2010.12.010] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [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] [Received: 09/14/2010] [Revised: 12/04/2010] [Accepted: 12/09/2010] [Indexed: 12/20/2022]
Abstract
Aberrant expression of specific microRNAs in hepatocellular carcinomas has recently been reported. We examined expression patterns of 4 microRNAs (microRNA-221, microRNA-222, microRNA-21, and microRNA-155) to evaluate their potential as relevant biomarkers by quantitative real-time reverse transcriptase-polymerase chain reaction using formalin-fixed, paraffin-embedded tissues of 115 surgically resected hepatocellular carcinoma and paired nonneoplastic liver cases as well as 21 normal liver samples from cancer-free individuals. MicroRNA-221, microRNA-222, and microRNA-21 were differentially overexpressed in hepatocellular carcinoma compared with nonneoplastic and normal livers (P < .001). The mean fold changes in microRNA-221, microRNA-222, and microRNA-21(hepatocellular carcinoma to matched nonneoplastic liver) were 4.00, 4.44, and, 3.67, respectively. In addition, nonneoplastic liver tissues displayed higher levels of microRNA-221, microRNA-222, microRNA-21, and microRNA-155 than normal livers (P < .001, respectively). However, the overexpression of the 4 microRNAs showed no consistent relevance to the known prognostic clinicopathologic parameters. High expression of microRNA-221 in hepatocellular carcinomas was significantly related to shorter time to local recurrence (P < .001) and determined as an independent predictor for local recurrence (P = .001). The fold changes in microRNA-221 (hepatocellular carcinoma to matched nonneoplastic liver) less than 1 were more commonly detected in cases of distant metastases than those of disease-free and local recurrence (P = .009). The fold changes less than 1 were related to reduced metastasis-free survival (P = .006) and thus can be used as an independent predictor of distant metastasis after surgical resection (P = .027). Based on these results, we propose the possible role of microRNA-221, microRNA-222, microRNA-21, and microRNA-155 dysregulation in hepatocarcinogenesis and the potential of microRNA-221 dysregulation for predicting local recurrence and distant metastasis after curative surgery.
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Affiliation(s)
- Sun Och Yoon
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
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95
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Yoon SO, Yu E, Cho YM, Suh C, Kim KM, Han DJ, Lee SG, Huh J. Post-transplant lymphoproliferative disorders: clinicopathological analysis of 43 cases in a single center, 1990-2009. Clin Transplant 2011; 26:67-73. [DOI: 10.1111/j.1399-0012.2010.01392.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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96
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Lee YM, Sim WH, Yoon SO, Kim SY, Park JS, Kho BG, Byun MK, Choi YC, Kim HJ. A Case of Cranial Nerve Palsy as a Paraneoplastic Syndrome in Non-Small Cell Lung Cancer. Tuberc Respir Dis (Seoul) 2011. [DOI: 10.4046/trd.2011.70.2.160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Young Mi Lee
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Woo Ho Sim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Sun Och Yoon
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - Song Yee Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Jung Soo Park
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Bo Gun Kho
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Min Kwang Byun
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Young Chul Choi
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
| | - Hyung Jung Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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97
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Yoon SO, Suh C, Lee DH, Chi HS, Park CJ, Jang SS, Shin HR, Park BH, Huh J. Distribution of lymphoid neoplasms in the Republic of Korea: analysis of 5318 cases according to the World Health Organization classification. Am J Hematol 2010; 85:760-4. [PMID: 20806229 DOI: 10.1002/ajh.21824] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Compared with the West, the overall incidence of lymphoid neoplasms is lower, and the subtype distribution is distinct in Asia. To comprehensively investigate the subtype distribution with the age and sex factors, and temporal changes of subtype proportions, we re-assessed all patients with lymphoid neoplasms diagnosed at a large oncology service in the Republic of Korea from 1989 to 2008 using the World Health Organization classifications. Of the total 5,318 patients, 66.9% had mature B-cell neoplasms, 12.5% had mature T/natural killer (NK)-cell neoplasms, 16.4% had precursor lymphoblastic leukemia/lymphoma (ALL/LBL), and 4.1% had Hodgkin's lymphoma. The most common subtypes were diffuse large B-cell lymphoma (30.5%), plasma cell myeloma (14.0%), extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue type (MALT lymphoma; 12.4%), B-cell ALL/LBL (11.3%), Hodgkin's lymphoma (4.1%), peripheral T-cell lymphoma unspecified (4.0%), T-cell ALL/LBL (3.9%), and extranodal NK/T-cell lymphoma of nasal type (3.9%). Most subtypes showed male predominance, with an average M/F ratio of 1.3. Most mature lymphoid neoplasms were diseases of adults (mean age, 53.5 yr), whereas ALL/LBLs were of young individuals (mean age, 20.3 yr). When the relative proportion of subtypes were compared between two decades (1989-1998 vs. 1999-2008), especially MALT lymphoma has increased in proportion, whereas T/NK-cell neoplasms and ALL/LBL have slightly decreased. In summary, the lymphoid neoplasms of Koreans shared some epidemiologic features similar to those of other countries, whereas some subtypes showed distinct features. Although the increase in incidence of lymphoid neoplasms is relatively modest in Korea, recent increase of MALT lymphoma and decrease of T/NK-cell neoplasms and ALL/LBL are interesting findings.
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Affiliation(s)
- Sun Och Yoon
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Poongnap-Dong, Seoul, South Korea
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98
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Hwang DW, Lim CS, Jang JY, Lee SE, Yoon SO, Jeon YK, Uk Lee K, Kim SW. Primary hematolymphoid malignancies involving the extrahepatic bile duct or gallbladder. Leuk Lymphoma 2010; 51:1278-87. [PMID: 20572800 DOI: 10.3109/10428194.2010.483300] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Primary hematolymphoid malignancies of the extrahepatic biliary tract are rare tumors. We report five cases of primary hematolymphoid malignancies involving the extrahepatic biliary tract. One is a granulocytic sarcoma of the extrahepatic bile duct, another is an extramedullary plasmacytoma of the gallbladder, and the others are two non-Hodgkin lymphomas of the extrahepatic bile duct and one of the gallbladder. The clinical presentations, radiographic studies, and gross findings at surgery have not been a significant help in differential diagnosis. Although a preoperative diagnosis of primary hematolymphoid malignancy is very difficult to reach because of the rarity of this disease, it should be considered, because, if an accurate diagnosis is made before surgical intervention, chemotherapy is the most appropriate treatment. In limited cases mimicking cholangiocarcinoma and gallbladder cancer, surgical resection followed by chemotherapy has a valid role as reasonable treatment for patients.
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Affiliation(s)
- Dae Wook Hwang
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
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99
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Yoon SO, Kim YT, Jung KC, Jeon YK, Kim BH, Kim CW. TTF-1 mRNA-positive circulating tumor cells in the peripheral blood predict poor prognosis in surgically resected non-small cell lung cancer patients. Lung Cancer 2010; 71:209-16. [PMID: 20471712 DOI: 10.1016/j.lungcan.2010.04.017] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2010] [Revised: 04/16/2010] [Accepted: 04/19/2010] [Indexed: 01/08/2023]
Abstract
Circulating tumor cells (CTCs) have been identified in peripheral blood of cancer patients, and reproducible detection of CTCs has demonstrated the potential as useful diagnostic and prognostic tools in several cancers. Present study aimed to determine the clinical relevance of CTCs in surgically resected non-small cell lung cancer (NSCLC) patients. CTC status in presurgery and postsurgery peripheral blood samples from 79 surgically resected NSCLC patients was investigated using thyroid transcription factor-1 (TTF-1) and cytokeratin19 (CK19) mRNA markers by nested real-time RT (reverse transcription)-PCR assay. Detection of TTF-1((+))CTCs was found to be specific to NSCLC patients. TTF-1((+))CTCs were detected in 36.1% (22/61) of patients before surgery and in 37.5% (18/48) after surgery. For CK19 mRNA-expressing CTCs (CK19((+))CTCs), the detection rate was 42.6% (26/61) before surgery, and 25.0% (12/48) after surgery. Cases with postsurgery TTF-1((+)) and/or CK19((+))TCs was more associated with disease progression (P=0.004) and shorter disease progression-free survival (P=0.006) as compared to those without postsurgery CTCs. As an individual marker, postsurgery TTF-1((+))CTCs-positive status was more associated with disease progression (P=0.004) and shorter disease progression-free survival (P=0.004) as compared to postsurgery TTF-1((+))CTCs-negative status. Particularly, patients with postsurgery TTF-1((+))CTCs, but not presurgery (Pre((-))Post((+)) cases) showed marked shorter disease progression-free survival than other patients (P<0.001). On the other hand, a CK19((+))CTC status individually did not show significant clinical relevance, and presurgery CK19((+))CTC status did not either. Present study suggests that TTF-1 mRNA-expressing CTCs might be a useful surrogate predictor of disease progression before clinical manifestations are apparent, and that monitoring of TTF-1((+))CTCs status after surgery may be useful for identifying high-risk patients among surgically resected NSCLC cases.
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Affiliation(s)
- Sun Och Yoon
- Department of Pathology, Seoul National University Hospital, Seoul, Republic of Korea
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100
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Yoon DH, Choi DR, Ahn HJ, Kim S, Lee DH, Kim SW, Park BH, Yoon SO, Huh J, Lee SW, Suh C. Ki-67 expression as a prognostic factor in diffuse large B-cell lymphoma patients treated with rituximab plus CHOP. Eur J Haematol 2010; 85:149-57. [PMID: 20477862 DOI: 10.1111/j.1600-0609.2010.01467.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Assessment of tumor cell proliferation based on Ki-67 expression yielded conflicting prognostic predictions of patients with diffuse large B-cell lymphoma (DLBCL). The introduction of rituximab to the DLBCL treatment regime has led to alterations in the significance of previous prognostic factors. METHODS We analyzed Ki-67 expression and its correlation with prognosis in 144 patients with DLBCL treated with rituximab plus CHOP (R-CHOP) between July 2003 and January 2008. RESULTS The complete response (CR) rates following R-CHOP administration were not significantly different, based on Ki-67 expression status (P = 0.104). However, higher rates of relapse were observed in the high Ki-67 expression group (Ki-67 >or= 85%, n = 46) with 25.0%, compared to 10.0% in the low Ki-67 expression group (Ki-67 < 85%, n = 88) (P = 0.040). The 2-yr event-free survival (EFS) rates were 44.3% and 74.1% in the high and low Ki-67 expression groups, respectively (P = 0.011). The 2-yr overall survival (OS) rate was 66.4% in the high Ki-67 expression group and 82.2% in the low Ki-67 expression group (P = 0.016). In multivariate analysis, Ki-67 expression was a significant prognostic factor for EFS [hazard ratio (HR) = 2.909; 95% confidence interval (CI) 1.261-6.708; P = 0.012]. Ki-67 was associated with OS but with borderline significance (HR = 2.876; 95% CI, 0.972-8.508; P = 0.056). CONCLUSION Elevated Ki-67 expression seems to be associated with higher relapse after CR and inferior EFS in patients with DLBCL treated with R-CHOP.
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Affiliation(s)
- Dok Hyun Yoon
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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