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Magrath JW, Sampath SS, Flinchum DA, Hartono AB, Goldberg IN, Boehling JR, Savkovic SD, Lee SB. Comprehensive Transcriptomic Analysis of EWSR1::WT1 Targets Identifies CDK4/6 Inhibitors as an Effective Therapy for Desmoplastic Small Round Cell Tumors. Cancer Res 2024; 84:1426-1442. [PMID: 38588409 PMCID: PMC11063761 DOI: 10.1158/0008-5472.can-23-3334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/28/2023] [Accepted: 02/07/2024] [Indexed: 04/10/2024]
Abstract
Desmoplastic small round cell tumors (DSRCT) are a type of aggressive, pediatric sarcoma characterized by the EWSR1::WT1 fusion oncogene. Targeted therapies for DSRCT have not been developed, and standard multimodal therapy is insufficient, leading to a 5-year survival rate of only 15% to 25%. Here, we depleted EWSR1::WT1 in DSRCT and established its essentiality in vivo. Transcriptomic analysis revealed that EWSR1::WT1 induces unique transcriptional alterations compared with WT1 and other fusion oncoproteins and that EWSR1::WT1 binding directly mediates gene upregulation. The E-KTS isoform of EWSR1::WT1 played a dominant role in transcription, and it bound to the CCND1 promoter and stimulated DSRCT growth through the cyclin D-CDK4/6-RB axis. Treatment with the CDK4/6 inhibitor palbociclib successfully reduced growth in two DSRCT xenograft models. As palbociclib has been approved by the FDA for the treatment of breast cancer, these findings demonstrate the sensitivity of DSRCT to palbociclib and support immediate clinical investigation of palbociclib for treating this aggressive pediatric cancer. SIGNIFICANCE EWSR1::WT1 is essential for desmoplastic small round cell tumors and upregulates the cyclin D-CDK4/6-RB axis that can be targeted with palbociclib, providing a targeted therapeutic strategy for treating this deadly tumor type.
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Affiliation(s)
- Justin W. Magrath
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, Louisiana
| | - Shruthi Sanjitha Sampath
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, Louisiana
| | - Dane A. Flinchum
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, Louisiana
| | - Alifiani B. Hartono
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, Louisiana
| | - Ilon N. Goldberg
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, Louisiana
| | - Julia R. Boehling
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, Louisiana
| | - Suzana D. Savkovic
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, Louisiana
| | - Sean B. Lee
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, Louisiana
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Magrath JW, Goldberg IN, Truong DD, Hartono AB, Sampath SS, Jackson CE, Ghosh A, Cardin DL, Zhang H, Ludwig JA, Lee SB. Enzalutamide induces cytotoxicity in desmoplastic small round cell tumor independent of the androgen receptor. Commun Biol 2024; 7:411. [PMID: 38575753 PMCID: PMC10995187 DOI: 10.1038/s42003-024-06003-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 03/01/2024] [Indexed: 04/06/2024] Open
Abstract
Desmoplastic Small Round Cell Tumor (DSRCT) is a rare, pediatric cancer caused by the EWSR1::WT1 fusion protein. DSRCT predominantly occurs in males, which comprise 80-90% of the patient population. While the reason for this male predominance remains unknown, one hypothesis is that the androgen receptor (AR) plays a critical role in DSRCT and elevated testosterone levels in males help drive tumor growth. Here, we demonstrate that AR is highly expressed in DSRCT relative to other fusion-driven sarcomas and that the AR antagonists enzalutamide and flutamide reduce DSRCT growth. However, despite these findings, which suggest an important role for AR in DSRCT, we show that DSRCT cell lines form xenografts in female mice at the same rate as male mice and AR depletion does not significantly alter DSRCT growth in vitro. Further, we find that AR antagonists reduce DSRCT growth in cells depleted of AR, establishing an AR-independent mechanism of action. These findings suggest that AR dependence is not the reason for male predominance in DSRCT and that AR-targeted therapies may provide therapeutic benefit primarily through an AR-independent mechanism that requires further elucidation.
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Affiliation(s)
- Justin W Magrath
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Ilon N Goldberg
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Danh D Truong
- Sarcoma Medical Oncology Department, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Alifiani B Hartono
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Shruthi Sanjitha Sampath
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Chandler E Jackson
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Anushka Ghosh
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Derrick L Cardin
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Haitao Zhang
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Joseph A Ludwig
- Sarcoma Medical Oncology Department, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Sean B Lee
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA.
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Magrath JW, Flinchum DA, Hartono AB, Sampath SS, O'Grady TM, Baddoo M, Haoyang L, Xu X, Flemington EK, Lee SB. Transcriptomic analysis identifies B-lymphocyte kinase as a therapeutic target for desmoplastic small round cell tumor cancer stem cell-like cells. Oncogenesis 2024; 13:2. [PMID: 38177125 PMCID: PMC10767073 DOI: 10.1038/s41389-023-00504-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 11/28/2023] [Accepted: 12/07/2023] [Indexed: 01/06/2024] Open
Abstract
Desmoplastic small round cell tumor (DSRCT) is an aggressive pediatric cancer caused by the EWSR1-WT1 fusion oncoprotein. The tumor is refractory to treatment with a 5-year survival rate of only 15-25%, necessitating the development of novel therapeutics, especially those able to target chemoresistant subpopulations. Novel in vitro cancer stem cell-like (CSC-like) culture conditions increase the expression of stemness markers (SOX2, NANOG) and reduce DSRCT cell line susceptibility to chemotherapy while maintaining the ability of DSRCT cells to form xenografts. To gain insights into this chemoresistant model, RNA-seq was performed to elucidate transcriptional alterations between DSRCT cells grown in CSC-like spheres and normal 2-dimensional adherent state. Commonly upregulated and downregulated genes were identified and utilized in pathway analysis revealing upregulation of pathways related to chromatin assembly and disassembly and downregulation of pathways including cell junction assembly and extracellular matrix organization. Alterations in chromatin assembly suggest a role for epigenetics in the DSRCT CSC-like state, which was further investigated with ATAC-seq, identifying over 10,000 differentially accessible peaks, including 4444 sphere accessible peaks and 6,120 adherent accessible peaks. Accessible regions were associated with higher gene expression, including increased accessibility of the CSC marker SOX2 in CSC-like culture conditions. These analyses were further utilized to identify potential CSC therapeutic targets, leading to the identification of B-lymphocyte kinase (BLK) as a CSC-enriched, EWSR1-WT1-regulated, druggable target. BLK inhibition and knockdown reduced CSC-like properties, including abrogation of tumorsphere formation and stemness marker expression. Importantly, BLK knockdown reduced DSRCT CSC-like cell chemoresistance, making its inhibition a promising target for future combination therapy.
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Affiliation(s)
- Justin W Magrath
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Dane A Flinchum
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Alifiani B Hartono
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
- Department of Molecular & Medical Pharmacology, University of California Los Angeles, 630 Charles E Young Dr. S., Los Angeles, CA, 90095, USA
| | - Shruthi Sanjitha Sampath
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Tina M O'Grady
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Melody Baddoo
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Liang Haoyang
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Xiaojiang Xu
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Erik K Flemington
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA
| | - Sean B Lee
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, USA.
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Magrath JW, Goldberg IN, Truong DD, Hartono AB, Sampath SS, Jackson CE, Ghosh A, Cardin DL, Zhang H, Ludwig JA, Lee SB. Enzalutamide Induces Cytotoxicity in Desmoplastic Small Round Cell Tumor Independent of the Androgen Receptor. bioRxiv 2023:2023.11.06.565842. [PMID: 37986851 PMCID: PMC10659336 DOI: 10.1101/2023.11.06.565842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Desmoplastic Small Round Cell Tumor (DSRCT) is a rare, pediatric cancer caused by the EWSR1::WT1 fusion protein. DSRCT predominantly occurs in males, which comprise 80-90% of the patient population. While the reason for this male predominance remains unknown, one hypothesis is that the androgen receptor (AR) plays a critical role in DSRCT and elevated testosterone levels in males help drive tumor growth. Here, we demonstrate that AR is highly expressed in DSRCT relative to other fusion-driven sarcomas and that the AR antagonists enzalutamide and flutamide reduce DSRCT growth. However, despite these findings, which suggest an important role for AR in DSRCT, we show that DSRCT cell lines form xenografts in female mice at the same rate as male mice and AR depletion does not significantly alter DSRCT growth in vitro. Further, we find that AR antagonists reduce DSRCT growth in cells depleted of AR, establishing an AR-independent mechanism of action. These findings suggest that AR dependence is not the reason for male predominance in DSRCT and that AR-targeted therapies may provide therapeutic benefit primarily through an AR-independent mechanism that requires further elucidation.
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Affiliation(s)
- Justin W Magrath
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave. New Orleans, LA, USA
| | - Ilon N Goldberg
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave. New Orleans, LA, USA
| | - Danh D Truong
- Sarcoma Medical Oncology Department, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Alifiani B Hartono
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave. New Orleans, LA, USA
| | - Shruthi Sanjitha Sampath
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave. New Orleans, LA, USA
| | - Chandler E Jackson
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave. New Orleans, LA, USA
| | - Anushka Ghosh
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave. New Orleans, LA, USA
| | - Derrick L Cardin
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave. New Orleans, LA, USA
| | - Haitao Zhang
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave. New Orleans, LA, USA
| | - Joseph A Ludwig
- Sarcoma Medical Oncology Department, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Sean B Lee
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave. New Orleans, LA, USA
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Magrath JW, Flinchum DA, Hartono AB, Goldberg IN, Espinosa-Cotton M, Moroz K, Cheung NKV, Lee SB. Genomic Breakpoint Characterization and Transcriptome Analysis of Metastatic, Recurrent Desmoplastic Small Round Cell Tumor. Sarcoma 2023; 2023:6686702. [PMID: 37457440 PMCID: PMC10344636 DOI: 10.1155/2023/6686702] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 04/27/2023] [Accepted: 06/28/2023] [Indexed: 07/18/2023] Open
Abstract
Desmoplastic small round cell tumor (DSRCT) is a rare pediatric cancer caused by the EWSR1-WT1 fusion oncogene. Despite initial response to chemotherapy, DSRCT has a recurrence rate of over 80% leading to poor patient prognosis with a 5-year survival rate of only 15-25%. Owing to the rarity of DSRCT, sample scarcity is a barrier in understanding DSRCT biology and developing effective therapies. Utilizing a novel pair of primary and recurrent DSRCTs, we present the first map of DSRCT genomic breakpoints and the first comparison of gene expression alterations between primary and recurrent DSRCT. Our genomic breakpoint map includes the lone previously published DSRCT genomic breakpoint, the breakpoint from our novel primary/recurrent DSRCT pair, as well as the breakpoints of five available DSRCT cell lines and five additional DSRCTs. All mapped breakpoints were unique and most breakpoints included a 1-3 base pair microhomology suggesting microhomology-mediated end-joining as the mechanism of translocation fusion and providing novel insights into the etiology of DSRCT. Through RNA-sequencing analysis, we identified altered genes and pathways between primary and recurrent DSRCTs. Upregulated pathways in the recurrent tumor included several DNA repair and mRNA splicing-related pathways, while downregulated pathways included immune system function and focal adhesion. We further found higher expression of the EWSR1-WT1 upregulated gene set in the recurrent tumor as compared to the primary tumor and lower expression of the EWSR1-WT1 downregulated gene set, suggesting the EWSR1-WT1 fusion continues to play a prominent role in recurrent tumors. The identified pathways including upregulation of DNA repair and downregulation of immune system function may help explain DSRCT's high rate of recurrence and can be utilized to improve the understanding of DSRCT biology and identify novel therapies to both help prevent recurrence and treat recurrent tumors.
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Affiliation(s)
- Justin W. Magrath
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave. New Orleans, LA, USA
| | - Dane A. Flinchum
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave. New Orleans, LA, USA
| | - Alifiani B. Hartono
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave. New Orleans, LA, USA
| | - Ilon N. Goldberg
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave. New Orleans, LA, USA
| | | | - Krzysztof Moroz
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave. New Orleans, LA, USA
| | - Nai-Kong V. Cheung
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Sean B. Lee
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, 1430 Tulane Ave. New Orleans, LA, USA
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Lee SB, Kim MJ, Lee IJ. Assessment of diagnostic accuracy and complication rates of CT-guided percutaneous core-needle biopsy for lung lesion: difference between solid and sub-solid nodules based on propensity score matching analysis. Clin Radiol 2023:S0009-9260(23)00177-0. [PMID: 37407369 DOI: 10.1016/j.crad.2023.04.012] [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] [Received: 12/28/2022] [Revised: 04/12/2023] [Accepted: 04/23/2023] [Indexed: 07/07/2023]
Abstract
AIM To compare the success and complication rates of computed tomography (CT)-guided percutaneous core-needle biopsy (PCNB) based on the density of lung nodules, using propensity score matching (PSM). MATERIALS AND METHODS This single-centre retrospective study included 1,312 PCNB cases of lung lesions, including solid (n=1,120), part-solid (n=115), and non-solid nodules (n=77), that were detected between March 2013 and March 2021. The diagnostic accuracy and complication rates of pneumothorax and pulmonary haemorrhage were analysed before PSM. To perform PSM, part-solid and non-solid nodules were combined and newly defined as sub-solid nodules. The diagnostic accuracy and complication rates of pneumothorax and pulmonary haemorrhage were then compared between solid and sub-solid nodules after PSM. RESULTS Among the 1,312 included cases, the success rate and incidence of pneumothorax after CT-guided PCNB for solid, part-solid, and non-solid nodules were not statistically different (p=0.080 and 0.410). However, the rates of overall pulmonary haemorrhage showed statistical differences (p<0.001), particularly between solid and part-solid nodules (p<0.001) and between solid and non-solid nodules (p<0.001). After PSM, the incidence rates of overall pulmonary haemorrhage in solid and sub-solid nodules were 8.9% (17/192) and 29.7% (44/182), respectively, showing a statistically significant difference (p<0.001). CONCLUSION There is increased risk of haemorrhage in CT-guided needle biopsy of sub-solid nodules compared to solid nodules. Increased emphasis should be placed on the risk of pulmonary haemorrhage when consenting these patients.
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Affiliation(s)
- S B Lee
- Department of Radiology, Hallym University Sacred Heart Hospital, Chuncheon, Republic of Korea
| | - M J Kim
- Department of Radiology, Hallym University Sacred Heart Hospital, Chuncheon, Republic of Korea.
| | - I J Lee
- Department of Radiology, Hallym University College of Medicine, Chuncheon, Republic of Korea.
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Magrath JW, Goldberg IA, Hartono AB, Lee SB. Abstract 3529: EWSR1-WT1 isoform selectivity, DNA binding, and druggable targets: unpacking the biology of desmoplastic small round cell tumor. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-3529] [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: 04/07/2023]
Abstract
Abstract
Desmoplastic small round cell tumor (DSRCT) is a rare pediatric cancer caused by the EWSR1-WT1 fusion gene. No targeted therapies have been established and multimodal therapy is ineffective with a 5-year survival rate of 15-25%. Many questions about the biology of DSRCT remain unanswered including the critical genes regulated by the EWSR1-WT1 fusion gene, the role of the - and +KTS fusion gene isoforms produced by alternative splicing, and the relationship between EWSR1-WT1 binding and gene expression alterations. To address these questions, we established four doxycycline-inducible DSRCT cell lines that selectively knockdown the expression of EWSR1-WT1. RNA-seq analysis on these cell lines with or without EWSR1-WT1 knockdown identified commonly altered genes and pathways. To illuminate the role of the EWSR1-WT1 -KTS and +KTS isoforms, the -KTS, +KTS, or both isoforms were overexpressed in a mesothelial cell line, a hypothesized cell of origin for DSRCT. Remarkably, different gene expression alterations were observed between the -KTS and +KTS isoforms. While overexpression of the -KTS isoform upregulated 765 genes and downregulated 366 genes, overexpression of the +KTS isoform upregulated 203 genes and downregulated 25 genes. Gene set enrichment analysis showed EWSR1-WT1 regulated gene signatures are recapitulated by overexpression of the -KTS isoform or both +/-KTS isoforms, but not the +KTS isoform alone, suggesting the -KTS isoform predominantly regulates gene expression in DSRCT. To interrogate the influence of direct and indirect gene regulation by EWSR1-WT1, ChIP-seq and CUT&RUN data were integrated into our RNA-seq analysis. Across each of our four DSRCT cell lines, approximately 25% of EWSR1-WT1 bound peaks led to upregulation, 10% led to downregulation, and 65% led to no gene expression alteration. EWSR1-WT1 binding accounted for 33% of EWSR1-WT1 commonly upregulated genes but only 4.2% of commonly downregulated genes. Upregulated EWSR1-WT1 bound genes were more likely to be bound in the promoter or first intron and coincide with Znf263 or Hoxb4 motifs. To evaluate the functional role of EWSR1-WT1 targets in DSRCT biology, a screen of the 24 druggable EWSR1-WT1 targets was conducted and a number of novel and known target genes were identified as important for DSRCT survival. Current work is verifying these targets with gene knockdown and evaluating their function in vivo.
Citation Format: Justin W. Magrath, Ilon A. Goldberg, Alifiani B. Hartono, Sean B. Lee. EWSR1-WT1 isoform selectivity, DNA binding, and druggable targets: unpacking the biology of desmoplastic small round cell tumor. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 3529.
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Affiliation(s)
| | | | | | - Sean B. Lee
- 1Tulane University School of Medicine, New Orleans, LA
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Nguyen K, Hebert K, McConnell E, Cullen N, Cheng T, Awoyode S, Martin E, Chen W, Wu T, Alahari SK, Izadpanah R, Collins-Burow BM, Lee SB, Drewry DH, Burow ME. LKB1 Signaling and Patient Survival Outcomes in Hepatocellular Carcinoma. Pharmacol Res 2023; 192:106757. [PMID: 37023992 DOI: 10.1016/j.phrs.2023.106757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 03/30/2023] [Accepted: 04/02/2023] [Indexed: 04/08/2023]
Abstract
The liver is a major organ that is involved in essential biological functions such as digestion, nutrient storage, and detoxification. Furthermore, it is one of the most metabolically active organs with active roles in regulating carbohydrate, protein, and lipid metabolism. Hepatocellular carcinoma is a cancer of the liver that is associated in settings of chronic inflammation such as viral hepatitis, repeated toxin exposure, and fatty liver disease. Furthermore, liver cancer is the most common cause of death associated with cirrhosis and is the 3rd leading cause of global cancer deaths. LKB1 signaling has been demonstrated to play a role in regulating cellular metabolism under normal and nutrient deficient conditions. Furthermore, LKB1 signaling has been found to be involved in many cancers with most reports identifying LKB1 to have a tumor suppressive role. In this review, we use the KMPlotter database to correlate RNA levels of LKB1 signaling genes and hepatocellular carcinoma patient survival outcomes with the hopes of identifying potential biomarkers clinical usage. Based on our results STRADß, CAB39L, AMPKα, MARK2, SIK1, SIK2, BRSK1, BRSK2, and SNRK expression has a statistically significant impact on patient survival.
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Affiliation(s)
- Khoa Nguyen
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Katherine Hebert
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Emily McConnell
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Nicole Cullen
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Thomas Cheng
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Susanna Awoyode
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Elizabeth Martin
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Weina Chen
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Tong Wu
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Suresh K Alahari
- Department of Biochemistry and Molecular Biology, LSUHSC School of Medicine, New Orleans, LA, USA
| | - Reza Izadpanah
- Applied Stem Cell Laboratory, Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | | | - Sean B Lee
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - David H Drewry
- UNC Eshelman School of Pharmacy and UNC Lineberger Comprehensive Cancer Center, Chemical Biology and Medicinal Chemistry Division, SGC-UNC, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Matthew E Burow
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
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Nguyen K, Boehling J, Tran MN, Cheng T, Rivera A, Collins-Burow BM, Lee SB, Drewry DH, Burow ME. NEK Family Review and Correlations with Patient Survival Outcomes in Various Cancer Types. Cancers (Basel) 2023; 15:cancers15072067. [PMID: 37046733 PMCID: PMC10093199 DOI: 10.3390/cancers15072067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 03/22/2023] [Accepted: 03/29/2023] [Indexed: 04/03/2023] Open
Abstract
The Never in Mitosis Gene A (NIMA)–related kinases (NEKs) are a group of serine/threonine kinases that are involved in a wide array of cellular processes including cell cycle regulation, DNA damage repair response (DDR), apoptosis, and microtubule organization. Recent studies have identified the involvement of NEK family members in various diseases such as autoimmune disorders, malignancies, and developmental defects. Despite the existing literature exemplifying the importance of the NEK family of kinases, this family of protein kinases remains understudied. This report seeks to provide a foundation for investigating the role of different NEKs in malignancies. We do this by evaluating the 11 NEK family kinase gene expression associations with patients’ overall survival (OS) from various cancers using the Kaplan–Meier Online Tool (KMPlotter) to correlate the relationship between mRNA expression of NEK1-11 in various cancers and patient survival. Furthermore, we use the Catalog of Somatic Mutations in Cancer (COSMIC) database to identify NEK family mutations in cancers of different tissues. Overall, the data suggest that the NEK family has varying associations with patient survival in different cancers with tumor-suppressive and tumor-promoting effects being tissue-dependent.
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Lee SB, Brown G. Editorial: Targeted therapies for aggressive cancers. Front Cell Dev Biol 2023; 11:1177266. [PMID: 36968205 PMCID: PMC10036839 DOI: 10.3389/fcell.2023.1177266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 03/06/2023] [Indexed: 11/30/2023] Open
Affiliation(s)
- Sean B. Lee
- Tulane Cancer Centre, Tulane University School of Medicine, New Orleans, LA, United States
| | - Geoffrey Brown
- School of Biomedical Sciences, Institute of Clinical Sciences, University of Birmingham, Birmingham, United Kingdom
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11
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Song TJ, Shin JI, Yon DK, Lee SW, Hwang SY, Hwang J, Park SH, Lee SB, Lee MH, Kim MS, Koyanagi A, Tizaoui K, Kim JH, Smith L. Cerebral venous thrombosis after ChAdOx1 nCoV-19 vaccination: a systematic review. Eur Rev Med Pharmacol Sci 2023; 27:404-410. [PMID: 36647889 DOI: 10.26355/eurrev_202301_30894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
OBJECTIVE To perform a systematic review of case reports or case series regarding thrombosis with thrombocytopenia syndrome (TTS) and cerebral venous thrombosis (CVT) related to ChAdOx1 nCoV-19 vaccination to address the clinical features, laboratory findings, treatment modalities, and prognosis related with CVT. SUBJECTS AND METHODS We included 64 TTS patients from 19 articles, 6 case series and 13 case reports, in which thrombosis occurred after the first dose of ChAdOx1 nCoV-19 vaccination published up to 30 June 2021 in Embase, ePubs, Medline/PubMed, Scopus, and Web of Science databases. RESULTS Of the 64 TTS patients, 38 (59.3%) had CVT. Patients with CVT were younger (median 36.5 vs. 52.5 years, p<0.001), had lower fibrinogen levels (130 vs. 245 mg/dL, p=0.008), had more frequent history of intracerebral hemorrhage (ICH), and had higher mortality rate (48.6% vs. 19.2%, p=0.020) than that of patients without CVT. In multivariable analysis, the possibility of presence of CVT was higher in younger age groups [odd ratio (OR): 0.91, 95% confidence interval (CI): (0.86-0.97, p<0.001)] and those with accompanying intracerebral hemorrhage (ICH) (OR: 13.60, 95% CI (1.28-144.12, p=0.045). CONCLUSIONS Our study demonstrated that CVT related to ChAdOx1 nCoV-19 vaccination was associated with younger age, low levels of fibrinogen, presence of ICH and more frequent mortality compared to those of non-CVT. If TTS occurs after ChAdOx1 nCoV-19 vaccination, the presence of CVT in patients with young age or ICH should be considered.
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Affiliation(s)
- T-J Song
- Department of Neurology, Seoul Hospital, Ewha University College of Medicine, Seoul, Republic of Korea.
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12
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Magrath JW, Kang HJ, Hartono A, Espinosa-Cotton M, Somwar R, Ladanyi M, Cheung NKV, Lee SB. Desmoplastic small round cell tumor cancer stem cell-like cells resist chemotherapy but remain dependent on the EWSR1-WT1 oncoprotein. Front Cell Dev Biol 2022; 10:1048709. [PMID: 36506091 PMCID: PMC9732033 DOI: 10.3389/fcell.2022.1048709] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 11/08/2022] [Indexed: 11/26/2022] Open
Abstract
Desmoplastic Small Round Cell Tumor (DSRCT) is a rare and aggressive pediatric cancer driven by the EWSR1-WT1 fusion oncogene. Combinations of chemotherapy, radiation and surgery are not curative, and the 5-years survival rate is less than 25%. One potential explanation for refractoriness is the existence of a cancer stem cell (CSC) subpopulation able escape current treatment modalities. However, no study to-date has examined the role of CSCs in DSRCT or established in vitro culture conditions to model this subpopulation. In this study, we investigated the role of stemness markers in DSRCT survival and metastasis, finding that elevated levels of SOX2 and NANOG are associated with worse survival in sarcoma patients and are elevated in metastatic DSRCT tumors. We further develop the first in vitro DSRCT CSC model which forms tumorspheres, expresses increased levels of stemness markers (SOX2, NANOG, KLF4, and OCT4), and resists doxorubicin chemotherapy treatment. This model is an important addition to the DSRCT tool kit and will enable investigation of this critical DSRCT subpopulation. Despite lower sensitivity to chemotherapy, the DSRCT CSC model remained sensitive to knockdown of the EWSR1-WT1 fusion protein, suggesting that future therapies directed against this oncogenic driver have the potential to treat both DSRCT bulk tumor and CSCs.
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Affiliation(s)
- Justin W. Magrath
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA, United States
| | - Hong-Jun Kang
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA, United States
| | - Alifiani Hartono
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA, United States
| | - Madelyn Espinosa-Cotton
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Romel Somwar
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Marc Ladanyi
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Nai-Kong V. Cheung
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Sean B. Lee
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA, United States
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13
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Nguyen K, Yousefi H, Cheng T, Magrath J, Hartono AB, Alzoubi M, Hebert K, Brock CK, Wright MK, Byrne CE, Rivera A, Okpechi SC, Matossian MD, Wathieu H, Elliott S, Mondrinos MJ, Lee SB, Collins-Burow BM, Alahari SK, Drewry DH, Burow ME. Expression of Novel Kinase MAP3K19 in Various Cancers and Survival Correlations. FRONT BIOSCI-LANDMRK 2022; 27:196. [PMID: 35748272 DOI: 10.31083/j.fbl2706196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 02/01/2022] [Accepted: 02/16/2022] [Indexed: 11/06/2022]
Abstract
Mitogen Activated Protein (MAP) kinases are a category of serine/threonine kinases that have been demonstrated to regulate intracellular events including stress responses, developmental processes, and cancer progression Although many MAP kinases have been extensively studied in various disease processes, MAP3K19 is an understudied kinase whose activities have been linked to lung disease and fibroblast development. In this manuscript, we use bioinformatics databases starBase, GEPIA, and KMPlotter, to establish baseline expressions of MAP3K19 in different tissue types and its correlation with patient survival in different cancers.
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Affiliation(s)
- Khoa Nguyen
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Hassan Yousefi
- Department of Biochemistry and Molecular Biology, LSUHSC School of Medicine, New Orleans, LA 70112, USA
| | - Thomas Cheng
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Justin Magrath
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Alifiani B Hartono
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Madlin Alzoubi
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Katherine Hebert
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Courtney K Brock
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Maryl K Wright
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Charles Ethan Byrne
- Department of Biomedical Engineering, Tulane University, New Orleans, LA 70112, USA
| | - Andrew Rivera
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Sam C Okpechi
- Department of Biochemistry and Molecular Biology, LSUHSC School of Medicine, New Orleans, LA 70112, USA
| | | | - Henri Wathieu
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Steven Elliott
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Mark J Mondrinos
- Department of Biomedical Engineering, Tulane University, New Orleans, LA 70112, USA
| | - Sean B Lee
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | | | - Suresh K Alahari
- Department of Biochemistry and Molecular Biology, LSUHSC School of Medicine, New Orleans, LA 70112, USA
| | - David H Drewry
- UNC Eshelman School of Pharmacy and UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Matthew E Burow
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
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14
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Magrath JW, Hartono AB, Lee SB. Abstract 902: Identification, characterization, and targeting of desmoplastic small round cell tumor cancer stem cell-like cells. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-902] [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
Desmoplastic Small Round Cell Tumor (DSRCT) is a rare and aggressive form of pediatric cancer caused by a translocation between chromosomes 11 and 22, creating the novel EWSR1-WT1 fusion gene. Current therapy including surgery and the P6 chemotherapy regimen is insufficient, leading to a 5-year survival rate of only 15-25%. One potential explanation for this poor prognosis is the existence of a cancer stem cell (CSC) population with the ability to resist chemotherapy and cause both tumor recurrence and metastasis. While a CSC population has been identified in the closely related Ewing Sarcoma, most commonly caused by the EWSR1-FLI1 fusion gene, no CSC population has yet been identified in DSRCT. In this study, novel culture conditions were developed that enabled the formation of tumorspheres in vitro in the two commonly available DSRCT cell lines: JN-DSRCT-1 and BER-DSRCT. These novel culture conditions led to upregulation of stemness genes at the RNA and protein level including NANOG and SOX2, two genes that are associated with poor survival outcomes in TCGA sarcomas data. CCK-8 assay demonstrated an increased chemoresistance for tumorspheres versus normal adherent culture especially for doxorubicin, which was confirmed by reduction in PARP cleavage. This chemoresistance may be partially explained by a more quiescent CSC state as shown by reduced cell proliferation and a lower percentage of cells in the S and G2/M phases. However, cells grown in tumorspheres still robustly formed tumors in vivo, thus demonstrating the two hallmark CSC traits of chemoresistance and tumor formation. RNA-seq was performed to elucidate key differences between the adherent and sphere culture conditions and identify potential targets for the therapeutically important CSC-like population. Overrepresentation analysis and gene set enrichment analysis both showed upregulation of pathways related to chromatin assembly and disassembly, suggesting epigenetic changes as DSRCT cells move to a more stem-like state. RNA-seq further revealed kinases upregulated in tumorspheres including B-lymphocyte kinase (BLK) which previous studies have demonstrated is oncogenic, regulated by EWSR1-WT1, and not necessary for normal survival. BLK knockdown reduced CSC-like properties including abrogation of tumorsphere formation and reduction in the levels of SOX2 and NANOG. Together, this work for the first time identifies a CSC-like population in DSRCT and BLK as a potential DSRCT CSC target.
Citation Format: Justin W. Magrath, Alifiani B. Hartono, Sean B. Lee. Identification, characterization, and targeting of desmoplastic small round cell tumor cancer stem cell-like cells [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 902.
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Affiliation(s)
| | | | - Sean B. Lee
- 1Tulane University School of Medicine, New Orleans, LA
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15
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Nguyen K, Tran MN, Rivera A, Cheng T, Windsor GO, Chabot AB, Cavanaugh JE, Collins-Burow BM, Lee SB, Drewry DH, Flaherty PT, Burow ME. MAP3K Family Review and Correlations with Patient Survival Outcomes in Various Cancer Types. FRONT BIOSCI-LANDMRK 2022; 27:167. [PMID: 35638434 DOI: 10.31083/j.fbl2705167] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 02/14/2022] [Accepted: 02/24/2022] [Indexed: 11/06/2022]
Abstract
The mitogen-activated protein kinase (MAPK) pathways are ubiquitous in cellular signaling and are essential for proper biological functions. Disruptions in this signaling axis can lead to diseases such as the development of cancer. In this review, we discuss members of the MAP3K family and correlate their mRNA expression levels to patient survival outcomes in different cancers. Furthermore, we highlight the importance of studying the MAP3K family due to their important roles in the larger, overall MAPK pathway, relationships with cancer progression, and the understudied status of these kinases.
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Affiliation(s)
- Khoa Nguyen
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Minh N Tran
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Andrew Rivera
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Thomas Cheng
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Gabrielle O Windsor
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Abraham B Chabot
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Jane E Cavanaugh
- Department of Pharmacological Sciences, Division of Medicinal Chemistry, Mylan School of Pharmacy, Duquesne University, Pittsburgh, PA 15218, USA
| | | | - Sean B Lee
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - David H Drewry
- UNC Eshelman School of Pharmacy and UNC Lineberger Comprehensive Cancer Center, Chemical Biology and Medicinal Chemistry Division, SGC-UNC, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Patrick T Flaherty
- Department of Pharmacological Sciences, Division of Medicinal Chemistry, Mylan School of Pharmacy, Duquesne University, Pittsburgh, PA 15218, USA
| | - Matthew E Burow
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
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16
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Smith RS, Odintsov I, Liu Z, Lui AJW, Hayashi T, Vojnic M, Suehara Y, Delasos L, Mattar MS, Hmeljak J, Ramirez HA, Shaw M, Bui G, Hartono AB, Gladstone E, Kunte S, Magnan H, Khodos I, De Stanchina E, La Quaglia MP, Yao J, Laé M, Lee SB, Spraggon L, Pratilas CA, Ladanyi M, Somwar R. Novel patient-derived models of DSRCT enable validation of ERBB signaling as a potential therapeutic vulnerability. Dis Model Mech 2021; 15:273569. [PMID: 34841430 PMCID: PMC8807576 DOI: 10.1242/dmm.047621] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 11/12/2021] [Indexed: 11/20/2022] Open
Abstract
Desmoplastic small round cell tumor (DSRCT) is characterized by the t(11;22)(p13;q12) translocation, which fuses the transcriptional regulatory domain of EWSR1 with the DNA-binding domain of WT1, resulting in the oncogenic EWSR1-WT1 fusion protein. The paucity of DSRCT disease models has hampered preclinical therapeutic studies on this aggressive cancer. Here, we developed preclinical disease models and mined DSRCT expression profiles to identify genetic vulnerabilities that could be leveraged for new therapies. We describe four DSRCT cell lines and one patient-derived xenograft model. Transcriptomic, proteomic and biochemical profiling showed evidence of activation of the ERBB pathway. Ectopic expression of EWSR1-WT1 resulted in upregulation of ERRB family ligands. Treatment of DSRCT cell lines with ERBB ligands resulted in activation of EGFR, ERBB2, ERK1/2 and AKT, and stimulation of cell growth. Antagonizing EGFR function with shRNAs, small-molecule inhibitors (afatinib, neratinib) or an anti-EGFR antibody (cetuximab) inhibited proliferation of DSRCT cells. Finally, treatment of mice bearing DSRCT xenografts with a combination of cetuximab and afatinib significantly reduced tumor growth. These data provide a rationale for evaluating EGFR antagonists in patients with DSRCT. This article has an associated First Person interview with the joint first authors of the paper. Summary: Novel models of desmoplastic small round cell tumor (DSRCT) reveal a role for the ERBB pathway in regulating growth of this sarcoma and provide a rationale for evaluating EGFR antagonists in patients with DSRCT.
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Affiliation(s)
- Roger S Smith
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Igor Odintsov
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Zebing Liu
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Allan Jo-Weng Lui
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Takuo Hayashi
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Morana Vojnic
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Yoshiyuki Suehara
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Lukas Delasos
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Marissa S Mattar
- Anti-tumor Assessment Core Facility, Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Julija Hmeljak
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Hillary A Ramirez
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Melissa Shaw
- Gerstner School of Graduate Studies, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Gabrielle Bui
- Gerstner School of Graduate Studies, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | | | - Eric Gladstone
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Siddharth Kunte
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Heather Magnan
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Inna Khodos
- Anti-tumor Assessment Core Facility, Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Elisa De Stanchina
- Anti-tumor Assessment Core Facility, Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Michael P La Quaglia
- Department of Pediatrics, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Jinjuan Yao
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Marick Laé
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Sean B Lee
- Tulane University School of Medicine, New Orleans, LA, USA
| | - Lee Spraggon
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Christine A Pratilas
- Division of Pediatric Oncology, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD, USA
| | - Marc Ladanyi
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Romel Somwar
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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17
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Oh J, Lee RW, Lee HR, Lee SB, Ju HJ, Park J, Park HR, Park JH, Hann SK, Almurayshid A, Shin J, Kang HY, Bae JM, Oh SH. Classification of facial and truncal segmental vitiligo and its clinical courses including recurrence rate and patterns: a retrospective review of 956 patients. Br J Dermatol 2020; 184:750-753. [PMID: 33131051 DOI: 10.1111/bjd.19661] [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] [Received: 10/05/2020] [Revised: 10/29/2020] [Accepted: 10/30/2020] [Indexed: 11/30/2022]
Affiliation(s)
- J Oh
- Department of Dermatology, Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - R W Lee
- Department of Dermatology, St Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - H R Lee
- Department of Dermatology, Ajou University School of Medicine, Suwon, Korea
| | - S B Lee
- Department of Dermatology, Inha University, School of Medicine, Incheon, Republic of Korea
| | - H J Ju
- Department of Dermatology, St Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - J Park
- Department of Education and Training, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - H R Park
- Department of Education and Training, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - J H Park
- Drs Woo and Hann's Skin Center, Seoul, Korea
| | - S-K Hann
- Drs Woo and Hann's Skin Center, Seoul, Korea
| | - A Almurayshid
- Department of Medicine, College of Medicine, Prince Sattam Bin Abdulaziz University, Saudi Arabia
| | - J Shin
- Department of Dermatology, Inha University, School of Medicine, Incheon, Republic of Korea
| | - H Y Kang
- Department of Dermatology, Ajou University School of Medicine, Suwon, Korea
| | - J M Bae
- Department of Dermatology, St Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - S H Oh
- Department of Dermatology, Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
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18
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Lee KD, Lee SB, Lim JK, Kang YM, Kim IB, Moon HJ, Lee WJ. Providing essential clinical care for non-COVID-19 patients in a Seoul metropolitan acute care hospital amidst ongoing treatment of COVID-19 patients. J Hosp Infect 2020; 106:673-677. [PMID: 33011308 PMCID: PMC7528870 DOI: 10.1016/j.jhin.2020.09.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 07/13/2020] [Revised: 09/14/2020] [Accepted: 09/26/2020] [Indexed: 12/13/2022]
Abstract
We assessed infection control efforts by comparing data collected over 20 weeks during a pandemic under a dual-track healthcare system. A decline in non-COVID-19 patients visiting the emergency department by 37.6% (P<0.01) was observed since admitting COVID-19 cases. However, patients with acute myocardial infarction (AMI), stroke, severe trauma and acute appendicitis presenting for emergency care did not decrease. Door-to-balloon time (34.3 (± 11.3) min vs 22.7 (± 8.3) min) for AMI improved significantly (P<0.01) while door-to-needle time (55.7 (± 23.9) min vs 54.0 (± 18.0) min) in stroke management remained steady (P=0.80). Simultaneously, time-sensitive care involving other clinical services, including patients requiring chemotherapy, radiation therapy and haemodialysis did not change.
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Affiliation(s)
- K D Lee
- Department of Infectious Diseases, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - S B Lee
- Department of Physical Medicine and Rehabilitation, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - J K Lim
- Department of Laboratory Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - Y M Kang
- Department of Infectious Diseases, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - I B Kim
- Department of Emergency Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - H J Moon
- New Horizon Cancer Institute, Myongji Hospital, Goyang, Republic of Korea
| | - W J Lee
- Department of General Surgery, Myongji Hospital, Goyang, Republic of Korea.
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19
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Lee SH, Lee SB, Heo JH, Yoon HS, Byun JW, Choi GS, Shin J. Sebaceous glands participate in the inflammation of rosacea. J Eur Acad Dermatol Venereol 2020; 34:e144-e146. [PMID: 31709649 DOI: 10.1111/jdv.16055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S H Lee
- Department of Dermatology, Inha University School of Medicine, Incheon, Korea
| | - S B Lee
- Department of Dermatology, Inha University School of Medicine, Incheon, Korea
| | - J H Heo
- Department of Dermatology, Inha University School of Medicine, Incheon, Korea
| | - H S Yoon
- Department of Dermatology, Inha University School of Medicine, Incheon, Korea
| | - J W Byun
- Department of Dermatology, Inha University School of Medicine, Incheon, Korea
| | - G S Choi
- Department of Dermatology, Inha University School of Medicine, Incheon, Korea
| | - J Shin
- Department of Dermatology, Inha University School of Medicine, Incheon, Korea
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20
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Roh HG, Kim EY, Kim IS, Lee HJ, Park JJ, Lee SB, Choi JW, Jeon YS, Park M, Kim SU, Kim HJ. A Novel Collateral Imaging Method Derived from Time-Resolved Dynamic Contrast-Enhanced MR Angiography in Acute Ischemic Stroke: A Pilot Study. AJNR Am J Neuroradiol 2019; 40:946-953. [PMID: 31097431 DOI: 10.3174/ajnr.a6068] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 04/12/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Assessment of the collateral status has been emphasized for appropriate treatment decisions in patients with acute ischemic stroke. The purpose of this study was to introduce a multiphase MRA collateral imaging method (collateral map) derived from time-resolved dynamic contrast-enhanced MRA and to verify the value of the multiphase MRA collateral map in acute ischemic stroke by comparing it with the multiphase collateral imaging method (MRP collateral map) derived from dynamic susceptibility contrast-enhanced MR perfusion. MATERIALS AND METHODS From a prospectively maintained registry of acute ischemic stroke, MR imaging data of patients with acute ischemic stroke caused by steno-occlusive lesions of the unilateral ICA and/or the M1 segment of the MCA were analyzed. We generated collateral maps using dynamic signals from dynamic contrast-enhanced MRA and DSC-MRP using a Matlab-based in-house program and graded the collateral scores of the multiphase MRA collateral map and the MRP collateral map independently. Interobserver reliabilities and intermethod agreement between both collateral maps for collateral grading were tested. RESULTS Seventy-one paired multiphase MRA and MRP collateral maps from 67 patients were analyzed. The interobserver reliabilities for collateral grading using multiphase MRA or MRP collateral maps were excellent (weighted κ = 0.964 and 0.956, respectively). The agreement between both collateral maps was also excellent (weighted κ = 0.884; 95% confidence interval, 0.819-0.949). CONCLUSIONS We demonstrated that the dynamic signals of dynamic contrast-enhanced MRA could be used to generate multiphase collateral images and showed the possibility of the multiphase MRA collateral map as a useful collateral imaging method in acute ischemic stroke.
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Affiliation(s)
- H G Roh
- From the Departments of Radiology (H.G.R., J.W.C.)
| | - E Y Kim
- Department of Radiology (E.Y.K.), Gachon University Gil Medical Center, Incheon, Korea
| | - I S Kim
- Siemens Healthineers Ltd (I.S.K.), Seoul, Korea
| | - H J Lee
- Departments of Neurosurgery (H.J.L., S.U.K.)
| | | | | | - J W Choi
- From the Departments of Radiology (H.G.R., J.W.C.)
| | - Y S Jeon
- Neurosurgery (Y.S.J.), Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - M Park
- Department of Radiology (M.P.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - S U Kim
- Departments of Neurosurgery (H.J.L., S.U.K.)
| | - H J Kim
- Radiology (H.J.K.), Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Korea
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Gwark SC, Kim J, Kim YH, Kim MS, Park JY, Lee SB, Sohn G, Chung IY, Ko BS, Kim HJ, Lee JW, Son BH, Ahn SH. Abstract P6-09-09: Analysis of serial circulating tumor cell count during neoadjuvant systemic therapy in breast cancer patients. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p6-09-09] [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: We aimed to evaluate the clinical implication of circulating tumor cell (CTC) counts in correlation with prognosis and radiologic/pathologic response to therapy in locally advanced breast cancer patients undergoing preoperative systemic therapy.
Methods: From Feb 2014 to May 2017, 207 patients without distant metastasis were prospectively enrolled from AMC. CTC counts were analyzed before-during-after the therapy. CTC isolation was performed using a SMART BIOPSY™ SYSTEM Isolation kit (Cytogen, Inc., Seoul, Korea). Recurrence-free and overall survival was analyzed according to CTC counts.
Result: The mean follow-up period was 22.46 months and mean age was 46.48 years. One or more CTC was identified in 132 of 203 patients(65.0%) before NST, in 135 of 186 patients(72.0%) during NST and 103 of 171 patients(60.2%) after NST. Initial tumor burden at diagnosis -tumor size, lymph node metastasis- was not correlated with CTC positivity. Overall, CTC count ((≥1 CTC, ≥2 CTCs, and ≥5 CTCs) was not correlated with response to therapy. Using RECIST criteria, 86.5% (179/204) were responders (complete, partial response, CR/PR) and 12.1% (25/204) were non-responders (stable, progressive disease, SD/PD). 14.5% (30/207) showed a pathologic complete response (pCR), yet no association was found between CTC count/changes and radiologic/pathologic response to therapy. Also, CTC count was not correlated with prognosis among the whole population. However, HR+ tumors, CTC detection before NST was significantly associated with treatment response by RECIST criteria (responder vs. non-responder) (p=0.003, p=0.017 and p=0.023, respectively).
Conclusions: Our findings support limited value of CTC count for locally advanced breast cancers undergoing neoadjuvant systemic therapy.
Citation Format: Gwark S-C, Kim J, Kim YH, Kim MS, Park JY, Lee SB, Sohn G, Chung IY, Ko BS, Kim HJ, Lee JW, Son BH, Ahn SH. Analysis of serial circulating tumor cell count during neoadjuvant systemic therapy in breast cancer patients [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P6-09-09.
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Affiliation(s)
- S-C Gwark
- Asan Medical Center, Seoul, Republic of Korea; Cytogen Inc., Seoul, Republic of Korea
| | - J Kim
- Asan Medical Center, Seoul, Republic of Korea; Cytogen Inc., Seoul, Republic of Korea
| | - YH Kim
- Asan Medical Center, Seoul, Republic of Korea; Cytogen Inc., Seoul, Republic of Korea
| | - MS Kim
- Asan Medical Center, Seoul, Republic of Korea; Cytogen Inc., Seoul, Republic of Korea
| | - JY Park
- Asan Medical Center, Seoul, Republic of Korea; Cytogen Inc., Seoul, Republic of Korea
| | - SB Lee
- Asan Medical Center, Seoul, Republic of Korea; Cytogen Inc., Seoul, Republic of Korea
| | - G Sohn
- Asan Medical Center, Seoul, Republic of Korea; Cytogen Inc., Seoul, Republic of Korea
| | - IY Chung
- Asan Medical Center, Seoul, Republic of Korea; Cytogen Inc., Seoul, Republic of Korea
| | - BS Ko
- Asan Medical Center, Seoul, Republic of Korea; Cytogen Inc., Seoul, Republic of Korea
| | - HJ Kim
- Asan Medical Center, Seoul, Republic of Korea; Cytogen Inc., Seoul, Republic of Korea
| | - JW Lee
- Asan Medical Center, Seoul, Republic of Korea; Cytogen Inc., Seoul, Republic of Korea
| | - BH Son
- Asan Medical Center, Seoul, Republic of Korea; Cytogen Inc., Seoul, Republic of Korea
| | - SH Ahn
- Asan Medical Center, Seoul, Republic of Korea; Cytogen Inc., Seoul, Republic of Korea
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Lee Y, Lee HS, Ahn SH, Son BH, Kim J, Lee SB. Abstract P1-02-04: Is asymptomatic surveillance after standard treatment beneficial? : A 10yr-survival analysis of recurrent breast cancer patients by detection method of recurrence. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p1-02-04] [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
Surveillance of recurrence after standard treatment of breast cancer (BC) for early detection and it's impact on overall survival are known to differ depending on recurrent site. Current guideline recommends asymptomatic surveillance to only detect loco-regional recurrences. As the evidences depend on historical randomized clinical trials we aimed to address questions whether earlier detection might have impact on survival now that plenty of new treatment strategies can be offered. Also to give answers to heterogeneous surveillance strategy in real-world practice we performed a retrospective 10yr-survival analysis of a large cohort of recurrent BC patients according to their detection method.
From 4188 operable breast cancer patients who completed standard treatment Asan Medical Center from 2006 to 2008 469 patients with recurrent BC were analyzed. Median disease free interval was 35.3 months (range 2.8-97.6) and overall survival (OS) was analyzed as time from initial diagnosis/surgery to death. Among 469 patients who developed recurrence 23.7% were local (ipsilateral breast skin chest wall) 22.6% were regional (ipsilateral axillary internal mammary lymph nodes) and 53.7% developed distant metastasis. 10yr-overall survival was analyzed according to recurrent site and it's detection method.
Detection of recurrence were categorized as 'asymptomatic surveillance (N=162, 34.5%)' and 'symptom-guided (N=307, 65.5%)'. Asymptomatic screening method included mammography breast-ultrasound serum tumor marker (CA15-3) and systemic images (eg. chest X-ray bone scan PET scans). Symptom-guided detection rate for local regional and distant metastasis was 14.9%, 5.5% and 15.1% respectively. Overall asymptomatic vs symptomatic 10yr-OS did not differ (81.3 vs 78.8 months, p=0.778). Among patients with distant metastasis 10ys-OS was not significantly different (70.3 vs 66.7 months p=0.846) and was similar according to stage/subtype. Among patients with local recurrence only 10yr-OS was 95.1 months ('symptomatic' vs 'aymptomatic 94.4 vs 94.5, p=0.809) which may be insufficient number of events to show significant difference. Among regional recurrent BCs, longer OS was observed in asymptomatically detected patients than symptom-guided group (86.1 vs 63.4, p=0.004). In Cox regression analyses asymptomatic detection showed significant better survival (HR=3.9, 95%CI:1.6-9.5) and this observation was more evident in patients with hormone receptor(HR) negative primary BCs (69.9 vs 47.9, p=0.029). Intriguingly, only 8.6% (7/80) of regional recurrence were diagnosed by mammography.
We observed survival benefit with asymptomatic screening in detecting regional recurrence especially in HR-negative primary BC patients. And role of systemic radiology even in advanced high risk breast cancer patients were limited. Although with limitation that surveillance method varied widely we emphasize the role of aymptomatic surveillance of regional nodal evaluation including breast-ultrasound. These findings are to be validated from a prospective clinical study along with using cutting edge modalities other than radiology which enable detection of micro-metastasis.
Citation Format: Lee Y, Lee HS, Ahn SH, Son BH, Kim J, Lee SB. Is asymptomatic surveillance after standard treatment beneficial? : A 10yr-survival analysis of recurrent breast cancer patients by detection method of recurrence [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-02-04.
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Affiliation(s)
- Y Lee
- Asan Medical Center, Seoul, Republic of Korea
| | - HS Lee
- Asan Medical Center, Seoul, Republic of Korea
| | - SH Ahn
- Asan Medical Center, Seoul, Republic of Korea
| | - BH Son
- Asan Medical Center, Seoul, Republic of Korea
| | - J Kim
- Asan Medical Center, Seoul, Republic of Korea
| | - SB Lee
- Asan Medical Center, Seoul, Republic of Korea
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Gwark SC, Lee JW, Lee SB, Sohn G, Kim J, Chung IY, Ko BS, Kim HJ, Son BH, Ahn SH. Abstract P2-08-22: Clinical implication of HER2/neu status in hormone receptor positive pure mucinous breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-08-22] [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: Mucinous carcinoma of the breast is a rare type of breast cancer with favorable outcome compared with other types of breast cancer. The current guideline does not recommend chemotherapy/anti-HER2 therapy for mucinous breast cancer with hormone receptor-positive subtype regardless of HER2/neu status. In this study, we evaluated the survival of pure mucinous breast cancer according to tumor stage and subtype.
Methods: Between 1989 and 2014, in Asan Medical Center, Korea, total 473 pure mucinous carcinomas (stage I-III) undergone curative surgery were reviewed retrospectively. 5yr disease-free and overall survival were analyzed according to size, lymph node metastasis, hormone receptor/HER2 status and given therapy.
Result: Total of 473 patients with pure mucinous breast cancer were analyzed and median follow-up duration was 78.00 months. 439 patients were hormone receptor-positive, 374 were node negative, 55 were HER2/neu positive. Among 374 patients with hormone receptor-positive and node-negative, tumor size was <1cm in 46 patients, 1-2.9cm in 259 patients, ≥3cm in 69 patients. In HR-positive/Node-positive BCs, 90.8%(59/65)were given chemotherapy and 35.3%(6/17) were also given trastuzumab. Sixteen patients given trastuzumab were only included in the analysis to assess the benefit of trastuzumab among HER2 positive BCs.
Overall, 5-year disease-free survival (DFS) rate was 94.1% and the 5-year overall survival (OS) rate was 95.9%. Using Cox regression analysis, lymph node metastasis was the only significant prognostic factor for both DFS (HR4.0, 95%CI:1.8-9.0, p=0.001) and OS (HR3.5, 95%CI:1.3-8.9, p=0.008). Among HR-positive/node-negative with tumor size ≥3cm, HER2/neu positivity was only significantly associated with 5yr-DFS (71.4% in HER2/neu+ vs. 96.4% in HER2/neu-, HR9.5, 95%CI:1.3-67.5, p=0.024). This observation was consistently combining both 'HR-positive/node-negative/>3cm' and 'HR-positive/node positive' BCs (N=127) that HER2 positive tumors showed worse survival (HR 3.7, 95%CI:1.2-10.8, p=0.015). Intriguingly, within this subgroup of HR-positive/node-negative/>3cm' and 'HR-positive/node positive' BCs, among HER2 positive tumors, while 5yr-DFS was 63.7% in patients who didn't receive trastuzumab, 100% were disease free in patients who were given trastuzumab.
Conclusions: Overall, nodal status was the most significant prognostic factor for pure mucinous breast cancer. In hormone receptor-positive, lymph node negative mucinous breast cancer with tumor of ≥3cm, HER2 positive BCs showed worse survival, suggesting a potential role of anti-HER2 strategy in this subgroup.
Citation Format: Gwark S-C, Lee JW, Lee SB, Sohn G, Kim J, Chung IY, Ko BS, Kim HJ, Son BH, Ahn SH. Clinical implication of HER2/neu status in hormone receptor positive pure mucinous breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-08-22.
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Affiliation(s)
- S-C Gwark
- Asan Medical Center, Seoul, Republic of Korea
| | - JW Lee
- Asan Medical Center, Seoul, Republic of Korea
| | - SB Lee
- Asan Medical Center, Seoul, Republic of Korea
| | - G Sohn
- Asan Medical Center, Seoul, Republic of Korea
| | - J Kim
- Asan Medical Center, Seoul, Republic of Korea
| | - IY Chung
- Asan Medical Center, Seoul, Republic of Korea
| | - BS Ko
- Asan Medical Center, Seoul, Republic of Korea
| | - HJ Kim
- Asan Medical Center, Seoul, Republic of Korea
| | - BH Son
- Asan Medical Center, Seoul, Republic of Korea
| | - SH Ahn
- Asan Medical Center, Seoul, Republic of Korea
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Lee HB, Kim KE, Ju YW, Jung JG, Ryu HS, Lee SB, Lee JW, Lee HJ, Kim MS, Kwon S, Kim J, Kim C, Moon HG, Noh DY, Ahn SH, Park IA, Kim S, Yoon S, Kim A, Han W. Abstract P2-07-10: Not presented. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-07-10] [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
This abstract was not presented at the conference.
Citation Format: Lee H-B, Kim KE, Ju YW, Jung J-G, Ryu H-S, Lee SB, Lee JW, Lee HJ, Kim M-S, Kwon S, Kim J, Kim C, Moon H-G, Noh D-Y, Ahn S-H, Park I-A, Kim S, Yoon S, Kim A, Han W. Not presented [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-07-10.
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Affiliation(s)
- H-B Lee
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - KE Kim
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - YW Ju
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - J-G Jung
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - H-S Ryu
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - SB Lee
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - JW Lee
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - HJ Lee
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - M-S Kim
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - S Kwon
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - J Kim
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - C Kim
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - H-G Moon
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - D-Y Noh
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - S-H Ahn
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - I-A Park
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - S Kim
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - S Yoon
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - A Kim
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
| | - W Han
- Seoul National University Hospital, Seoul, Korea; Asan Medican Center, Seoul, Korea; Seoul National University College of Engineering, Seoul, Korea; Korea University Guro Hospital, Seoul, Korea
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Kim J, Jo WK, Kim KY, Kim BJ, Lee SB, Lee HJ, Yu JH, Kim HJ, Chung IY, Ko BS, Kim SB, Jung KH, Ahn JH, Chang S, Lee JW, Son BH, Ahn SH. Abstract P4-01-11: Genomic alterations of cell-free DNA in early breast cancer patients with recurrence. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p4-01-11] [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
Cell-free DNA (cfDNA), as a non-invasive strategy, provides substantial benefit to overcome tumor heterogeneity. Surveillance of recurrence after standard treatment in early breast cancer (BC) using cfDNA, enables to detect minimal residual disease (MRD), also to identify genomic alterations driving recurrences. We aimed to assess the role of cfDNA in detecting MRD by investigating genomic alterations of 1)primary, recurred tumor and 2)cfDNA at time of recurrence using deep targeted sequencing. Fifty-four early BC patients were enrolled prospectively between 2014 and 2017 at time of recurrence. Median disease free interval was 28.5 months (rage 6.2-49.8). 62.7% (32/51) were hormone receptor (HR) positive (28 HRpos/HER2neg, 4 HRpos/HER2pos), 11.8% (6/51) were HRneg/HER2pos and 25.5% (13/51) were triple negative BCs. 59.3% (32/54) patients developed loco-regional recurrence (15 local recurrence only, 13 regional only, 4 with both) and distant metastasis was observed among 40.7% (22/54) patients. Cell-free DNA was extracted from 5cc blood at time of recurrence. Deep targeted sequencing was performed using customized NGS panel –encompassing 426 cancer-related target coding region, 242 fusion and amplification-related region- of cfDNA and FFPE(formalin fixed paraffin embedded) tumor samples archived from surgical resection or biopsy. Deep targeted sequencing data was successfully performed in 72.1% (31/43) plasma samples and sequencing yield was significantly lower when stored for more than 2yrs (46.2% vs 83.3%).
Mutations of cfDNA and tumor (primary, recurred) were analyzed. Mean sequencing depth of cfDNA and FFPE were x425.7 and x777.6 respectively. Median number of pathogenic mutations found in primary tumor, cfDNA and recurred tumor were 27(range 12-99), 25(range 8-85) and 9(range 0-23). Among mutations found in primary tumor, 27.4% were shared mutations (range 8.1%-72.7%) with recurred tumor and 26.1% were shared mutations (range 4.7%-69.2%) observed in cfDNA sample. Among mutations found in recurred tumor, 40.9% were observed in cfDNA (range 17.7-87.5%). In primary tumor, median number of mutations with allelic fraction (MAF)>10% were 12 (range 4-21) and at least one mutation was found in cfDNA at time of recurrence. Among mutations with MAF>10%, 59.4% and 69.1% were found in cfDNA and recurred tumor. Known oncogenic mutations of PIK3CA, TP53, GATA3, AKT1, ESR1, RELN, ERBB2, ERBB3, BRCA1 mutation were found. PIK3CA gene (p.H1047R) was found in two cases both in primary tumor and cfDNA at recurrence (MAF 11.4% vs 5.3% and 12.3% vs 15.4%) suggesting de novo driver mutation. One patient developed regional recurrence during adjuvant aromatase inhibitor with ESR1 V392I mutation in both cfDNA and recurred tumor (MAF 48.1 and 54.5%), while another patient's recurred tumor during aromatase inhibitor harbored ESR1 D538G mutation exclusively in recurred tumor with MAF <1%. Both patients had no ESR1 hotpot mutation in primary tumor.
Our data showed sequencing yield of 83.3% in plasma samples within 2yr. Pathogenic mutations in primary tumor, especially when MAF>10%, half of them was observed in cfDNA at time of recurrence. ESR1 mutation should be included in cfDNA surveillance for patients undergoing endocrine therapy even absent in primary tumor.
Citation Format: Kim J, Jo WK, Kim KY, Kim BJ, Lee SB, Lee HJ, Yu JH, Kim HJ, Chung IY, Ko BS, Kim S-B, Jung KH, Ahn JH, Chang S, Lee JW, Son BH, Ahn SH. Genomic alterations of cell-free DNA in early breast cancer patients with recurrence [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P4-01-11.
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Affiliation(s)
- J Kim
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - WK Jo
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - KY Kim
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - BJ Kim
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - SB Lee
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - HJ Lee
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - JH Yu
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - HJ Kim
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - IY Chung
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - BS Ko
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S-B Kim
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - KH Jung
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - JH Ahn
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S Chang
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - JW Lee
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - BH Son
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - SH Ahn
- Asan Medical Center, Seoul, Republic of Korea; Macrogen Inc, Seoul, Republic of Korea; Samsung Medical Center, Seoul, Republic of Korea; Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Birch GF, Lee SB. Baseline physio-chemical characteristics of Sydney estuary water under quiescent conditions. Mar Pollut Bull 2018; 137:370-381. [PMID: 30503446 DOI: 10.1016/j.marpolbul.2018.10.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 10/15/2018] [Accepted: 10/17/2018] [Indexed: 05/14/2023]
Abstract
The current study establishes baseline water quality properties for Sydney estuary, Australia for long periods of quiescence, which characterize the region. The study was undertaken in response to numerous requests for such data by researchers, government agencies and contractors. During quiescent periods, the range in Secchi depth transparency, turbidity, salinity and total suspended solid (TSS) values was 0.3-5.3 m, 18.6-0.1 NTU, 26.4-35.3 PSU and 8.3-1.0 mg/L in the upper and lower estuary, respectively. Baseline particulate metal concentrations were high, however TSS metal mass was greater during high rainfall. Tables and GIS-based maps allow baseline physio-chemical values to be extracted from the database for any location in Sydney estuary for quiescent conditions. Strong inter-parameter baseline relationships enable interpolation between water quality data. Baseline physio-chemical values were used to assess the impact of a high-precipitation event to demonstrate the utility of the new database.
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Affiliation(s)
- G F Birch
- School of Geosciences, The University of Sydney, NSW, Australia.
| | - S B Lee
- School of Geosciences, The University of Sydney, NSW, Australia
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Lee SB, Kim DH, Kim T, Lee SH, Jeong JH, Kim SC, Park YJ, Lim D, Kang C. Anion gap and base deficit are predictors of mortality in acute pesticide poisoning. Hum Exp Toxicol 2018; 38:185-192. [PMID: 30001645 DOI: 10.1177/0960327118788146] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND: Acute pesticide poisoning has long been a serious problem as a method of suicide worldwide. This poisoning is a highly fatal condition that requires a rapid and precise diagnosis for adequate treatment. However, various studies on mortality predictor factors have been insufficient for whole pesticide treatments. We hypothesized that the initial plasma anion gap (AG) and base deficit (BD) are reliable prognostic factors. METHODS: A retrospective study analyzed 561 patients with a diagnosis of acute pesticide poisoning between January 1, 2014 and June 30, 2017. The initial AG and BD values were divided into quartiles according to the number of patients. Survival at 30 days from admission was estimated using the Kaplan-Meier survival analysis. Receiver-operator characteristic (ROC) curves were drawn, and the areas under the curve for AG and BD for mortality were calculated. RESULTS: Fifty-eight (10.3%) of 561 patients died within 30 days. The highest AG quartile (>22 mEq/L) was associated with an increased risk of 30-day hospital mortality. Compared to patients with an AG less than 14.7 mEq/L, these patients had a 4.18-fold higher risk of 30-day hospital mortality and the highest BD quartile (>7.9 mEq/L) was associated with an increased risk of 30-day hospital mortality. Compared to patients with a BD less than 1.4 mEq/L, these patients had 2.23-fold higher risk of 30-day hospital mortality. The areas under the ROC for AG and BD curve were 0.699 and 0.744, respectively. CONCLUSIONS: Initial high AG and BD values could predict mortality and require precise intensive care.
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Affiliation(s)
- S B Lee
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - D H Kim
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - T Kim
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - S H Lee
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - J H Jeong
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - S C Kim
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,3 Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
| | - Y J Park
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,3 Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
| | - D Lim
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,3 Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
| | - C Kang
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
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Abstract
Abstract
Desmoplastic Small Round Cell Tumor (DSRCT) is a rare and aggressive malignant cancer caused by the chromosomal translocation of t(11;22)(p13;q12) that produces a novel, aberrant transcription factor, EWS-WT1. EWS-WT1 is essential in the formation of DSRCT as well as for maintaining DSRCT cell growth. However, current research has not elucidated how EWS-WT1 leads to the oncogenesis of DSRCT. Through our integrative gene expression data, we identified Salt Inducible Kinase 1 (SIK1) as one of direct target genes of EWS-WT1 in JN-DSRCT-1 cell line. SIK1 is a member of the AMPK related kinases and is involved in gluconeogenesis and lipogenesis regulation, skeletal myocytes development, p53 dependent anoikis, and cell cycle regulation. Through our ChIP analysis, we showed that EWS-WT1 directly binds to a 2kb proximal promoter region of SIK1. Following SIK1 depletion, JN-DSRCT-1 cell proliferation sharply decreased, similar to the growth inhibition observed when EWS-WT1 is depleted. We further showed that cells do not transit to S phase when SIK1 is depleted, suggesting a critical role of SIK1 in cell cycle regulation in DSRCT. Taken together, we have established that EWS-WT1 directly activates SIK1 expression and promotes cell proliferation through SIK1. Therefore, our work identified SIK1 as a new potential therapeutic target in DSRCT.
Citation Format: Alifiani B. Hartono, Sean B. Lee. Identification of SIK1 as a potential therapeutic target for desmoplastic small round cell tumor [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 2386.
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Affiliation(s)
| | - Sean B. Lee
- Tulane University School of Medicine, New Orleans, LA
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29
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Incerti S, Kyriakou I, Bernal MA, Bordage MC, Francis Z, Guatelli S, Ivanchenko V, Karamitros M, Lampe N, Lee SB, Meylan S, Min CH, Shin WG, Nieminen P, Sakata D, Tang N, Villagrasa C, Tran HN, Brown JMC. Geant4-DNA example applications for track structure simulations in liquid water: A report from the Geant4-DNA Project. Med Phys 2018; 45. [PMID: 29901835 DOI: 10.1002/mp.13048] [Citation(s) in RCA: 198] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 05/03/2018] [Accepted: 06/04/2018] [Indexed: 01/11/2023] Open
Abstract
This Special Report presents a description of Geant4-DNA user applications dedicated to the simulation of track structures (TS) in liquid water and associated physical quantities (e.g., range, stopping power, mean free path…). These example applications are included in the Geant4 Monte Carlo toolkit and are available in open access. Each application is described and comparisons to recent international recommendations are shown (e.g., ICRU, MIRD), when available. The influence of physics models available in Geant4-DNA for the simulation of electron interactions in liquid water is discussed. Thanks to these applications, the authors show that the most recent sets of physics models available in Geant4-DNA (the so-called "option4" and "option 6" sets) enable more accurate simulation of stopping powers, dose point kernels, and W-values in liquid water, than the default set of models ("option 2") initially provided in Geant4-DNA. They also serve as reference applications for Geant4-DNA users interested in TS simulations.
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Affiliation(s)
- S Incerti
- University of Bordeaux, CENBG, UMR 5797, F-33170, Gradignan, France
- CNRS, IN2P3, CENBG, UMR 5797, F-33170, Gradignan, France
| | - I Kyriakou
- Medical Physics Laboratory, University of Ioannina Medical School, 45110, Ioannina, Greece
| | - M A Bernal
- Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - M C Bordage
- Université Toulouse III-Paul Sabatier, UMR1037 CRCT, Toulouse, France
- Inserm, UMR1037 CRCT, Toulouse, France
| | - Z Francis
- Department of Physics, Faculty of Sciences, Université Saint Joseph, Beirut, Lebanon
| | - S Guatelli
- Centre for Medical Radiation Physics, University of Wollongong, Wollongong, Australia
- Illawarra Health & Medical Research Institute, University of Wollongong, Wollongong, Australia
| | - V Ivanchenko
- Geant4 Associates International Ltd., Hebden Bridge, UK
- Tomsk State University, Tomsk, Russia
| | - M Karamitros
- Radiation Laboratory, University of Notre Dame, Notre Dame, IN 46556, USA
| | - N Lampe
- Vicinity Centres, Data Science & Insights, Office Tower One, 1341 Dandenong Rd, Chadstone, Victoria, 3148, Australia
| | - S B Lee
- Proton Therapy Center, National Cancer Center, 323, Ilsan-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do, Korea
| | - S Meylan
- SymAlgo Technologies, 75 rue Léon Frot, 75011, Paris, France
| | - C H Min
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, Korea
| | - W G Shin
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, Korea
| | | | - D Sakata
- University of Bordeaux, CENBG, UMR 5797, F-33170, Gradignan, France
- CNRS, IN2P3, CENBG, UMR 5797, F-33170, Gradignan, France
- Centre for Medical Radiation Physics, University of Wollongong, Wollongong, Australia
| | - N Tang
- IRSN, Institut de Radioprotection et de Sureté Nucléaire, 92262, Fontenay-aux-Roses, France
| | - C Villagrasa
- IRSN, Institut de Radioprotection et de Sureté Nucléaire, 92262, Fontenay-aux-Roses, France
| | - H N Tran
- Division of Nuclear Physics, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - J M C Brown
- Department of Radiation Science and Technology, Delft University of Technology, Delft, The Netherlands
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Gwark SC, Lee JW, Lee SB, Sohn G, Kim J, Chung IY, Kim HJ, Ko BS, Son BH, Ahn SH. Abstract P1-07-29: Clinicopathologic characteristics and prognostic factors of pure mucinous breast cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p1-07-29] [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: Mucinous carcinoma of the breast is a uncommon particular type of breast cancer and comprises approximately 4% of all invasive breast cancers. It is charactarized by abundant extracellular mucin production and present a more favorable prognosis than IDC-NOS. Pathologically, mucinous carcinoma is divided into two subtypes : pure and mixed. In this study, we reviewed the clinicopathologic characteristics and prognostic factors of pure mucinous carcinoma.
Methods: We reviewed the 23 years cumulative data of pure mucinous breast cancer patients from database of the Breast Cancer Center at ASAN medical center, Korea, between 1989-2011, retrospectively. Total 386 pure mucinous carcinoma cases were reviewed to analyze clinicopathologic characteristics and prognosis.
Result: Total of 386 patients with pure mucinous breast cancer were identified. Mean age was 46.7. 149 patients underwent modified radical mastectomy and 236 underwent breast-conserving therapy. The T-stage was T1 in 187 patients, T2 in 178 patients, T3 in 17 patient and T4 in 4 patients. Node negative was 325 and node positive was 61. Estrogen receptor was positive in 342 and negative in 29. Progesterone receptor was positive in 276 and negative in 95. HER-2 was positive in 47 and negative in 273. 152 patients received adjuvant chemotherapy and 240 patients received adjuvant radiotherapy. 351 patients received hormone therapy and among these patients, 231 patients were treated with Tamoxifen alone, 81 were Tamoxifen with ovarian function suppression, 37 were AI only and one patient was ovarian function suppression only. The 5 year disease free survival rate was 93.3%, 5 year cancer specific survival rate was 98.2% and 5 year overall survival rate was 96.6%. Univariate analysis showed that ER status, nodal status and Her2 status were appear to be prognostic factor of Disease free survival rate. Using Cox regression, result of multivariate analysis revealed that only nodal status is the most significant prognostic factor for survival rate.
Conclusions: Pure mucinous carcinoma of the breast is a rare subtype with a favorable prognosis. Nodal status rather than ER status, Her2 status are considered to be the most significant prognostic factor of pure mucinos breast cancer.
Citation Format: Gwark SC, Lee JW, Lee SB, Sohn G, Kim J, Chung IY, Kim HJ, Ko BS, Son BH, Ahn SH. Clinicopathologic characteristics and prognostic factors of pure mucinous breast cancer [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P1-07-29.
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Affiliation(s)
- SC Gwark
- Asan Medical Center, Seoul, Republic of Korea
| | - JW Lee
- Asan Medical Center, Seoul, Republic of Korea
| | - SB Lee
- Asan Medical Center, Seoul, Republic of Korea
| | - G Sohn
- Asan Medical Center, Seoul, Republic of Korea
| | - J Kim
- Asan Medical Center, Seoul, Republic of Korea
| | - IY Chung
- Asan Medical Center, Seoul, Republic of Korea
| | - HJ Kim
- Asan Medical Center, Seoul, Republic of Korea
| | - BS Ko
- Asan Medical Center, Seoul, Republic of Korea
| | - BH Son
- Asan Medical Center, Seoul, Republic of Korea
| | - SH Ahn
- Asan Medical Center, Seoul, Republic of Korea
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Kang H, Oka S, Lee DY, Park J, Aponte AM, Jung YS, Bitterman J, Zhai P, He Y, Kooshapur H, Ghirlando R, Tjandra N, Lee SB, Kim MK, Sadoshima J, Chung JH. Sirt1 carboxyl-domain is an ATP-repressible domain that is transferrable to other proteins. Nat Commun 2017; 8:15560. [PMID: 28504272 PMCID: PMC5440690 DOI: 10.1038/ncomms15560] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 04/08/2017] [Indexed: 12/26/2022] Open
Abstract
Sirt1 is an NAD+-dependent protein deacetylase that regulates many physiological functions, including stress resistance, adipogenesis, cell senescence and energy production. Sirt1 can be activated by energy deprivation, but the mechanism is poorly understood. Here, we report that Sirt1 is negatively regulated by ATP, which binds to the C-terminal domain (CTD) of Sirt1. ATP suppresses Sirt1 activity by impairing the CTD's ability to bind to the deacetylase domain as well as its ability to function as the substrate recruitment site. ATP, but not NAD+, causes a conformational shift to a less compact structure. Mutations that prevent ATP binding increase Sirt1's ability to promote stress resistance and inhibit adipogenesis under high-ATP conditions. Interestingly, the CTD can be attached to other proteins, thereby converting them into energy-regulated proteins. These discoveries provide insight into how extreme energy deprivation can impact Sirt1 activity and underscore the complex nature of Sirt1 structure and regulation.
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Affiliation(s)
- Hyeog Kang
- Laboratory of Obesity and Aging Research, Genetics and Development Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Shinichi Oka
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers University, New Jersey Medical School, Newark, New Jersey 07101, USA
| | - Duck-Yeon Lee
- Biochemistry Core Facility, Biochemistry and Biophysics Center, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Junhong Park
- Tulane University School of Medicine, Department of Pathology, New Orleans, Louisiana 70112, USA
| | - Angel M. Aponte
- Proteomics Core Facility, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Young-Sang Jung
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seoul 120-140, Republic of Korea
| | - Jacob Bitterman
- Laboratory of Obesity and Aging Research, Genetics and Development Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Peiyong Zhai
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers University, New Jersey Medical School, Newark, New Jersey 07101, USA
| | - Yi He
- Laboratory of Molecular Biophysics, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Hamed Kooshapur
- Laboratory of Molecular Biophysics, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Rodolfo Ghirlando
- Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Nico Tjandra
- Laboratory of Molecular Biophysics, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Sean B. Lee
- Tulane University School of Medicine, Department of Pathology, New Orleans, Louisiana 70112, USA
| | - Myung K. Kim
- Laboratory of Obesity and Aging Research, Genetics and Development Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Junichi Sadoshima
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers University, New Jersey Medical School, Newark, New Jersey 07101, USA
| | - Jay H. Chung
- Laboratory of Obesity and Aging Research, Genetics and Development Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
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Lee SB, Kang C, Kim DH, Kim T, Lee SH, Jeong JH, Kim SC, Rhee DY, Lim D. Base deficit is a predictor of mortality in organophosphate insecticide poisoning. Hum Exp Toxicol 2017; 37:118-124. [PMID: 29233034 DOI: 10.1177/0960327117694073] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Organophosphate insecticide (OPI) self-poisoning is a major medical problem in many countries. Several studies have demonstrated that the base deficit (BD) is a prognostic tool that is correlated with the severity of injury and predicted mortality, particularly in trauma patients. Here, we aimed to investigate the prognostic significance of BD in OPI poisoning. METHODS This retrospective observational study was conducted between January 1, 2006, and January 31, 2015, at a single emergency department (ED). The BD values were divided into quartiles according to the number of patients: 3 mEq/L or less, 3-5.9 mEq/L, 6-9.9 mEq/L, and 10 mEq/L or greater. Survival at 30 days from ED admission was estimated using the Kaplan-Meier survival analysis. RESULTS Among 154 patients, 31 died, yielding a mortality of 20.1%. The highest BD quartile (≥ 10 mEq/L) and the 6-9.9 mEq/L group were associated with an increased risk of 30-day mortality. Patients with a BD of 10 mEq/L or greater had a 5.85-fold higher risk of 30-day mortality and patients with a BD of 6-9.9 mEq/L had a 5.40-fold higher risk of 30-day mortality compared to patients with a BD of 3 mEq/L or less. The area under the curves of the BD and the Acute Physiology and Chronic Health Evaluation II score for mortality were 0.748 (95% confidence interval (CI), 0.660-0.835) and 0.852 (95% CI, 0.789-0.915), respectively. CONCLUSIONS This study showed that the BD is a predictor of 30-day mortality in patients with OPI poisoning.
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Affiliation(s)
- S B Lee
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - C Kang
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - D H Kim
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - T Kim
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - S H Lee
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - J H Jeong
- 1 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - S C Kim
- 2 Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,3 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju and Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
| | - D Y Rhee
- 3 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju and Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
| | - D Lim
- 3 Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju and Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
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Chung IY, Lee JW, Lee JS, Park YR, Lee Y, Lee SB, Kim HJ, Ko BS, Son BH, Ahn SH. Abstract P6-09-38: Interaction between body mass index and hormone receptor status as a prognostic factor in node-positive breast cancer. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p6-09-38] [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
Purpose: The aim of this study was to investigate the interaction between BMI at breast cancer diagnosis and the various factors including hormone-receptor, menopausal and nodal status, and to find a specific subgroup where BMI has an effect on breast cancer prognosis.
Methods: We retrospectively analyzed the data of 8,763 non-metastatic invasive breast cancer patients from the Asan Medical Center's research database. Overall survival (OS) and breast cancer-specific survival (BCSS) among BMI groups were compared using the Kaplan-Meier method and Cox proportional hazard model with interaction term.
Results: Only in node-positive breast cancer, there was a significant interaction between obesity (BMI ≥ 30.0 kg/m2) at diagnosis and positive hormone receptor which showed worse overall survival (OS) and breast cancer specific survival (BCSS) than normal weight patients (adjusted hazard ratio [HR] = 1.65, 95% confidence interval [CI] = 1.01 to 2.69 and HR = 1.90, 95% CI = 1.15 to 3.15, respectively). Underweight (BMI<18.50 kg/m2) which interacted with negative hormone receptor status in node-positive breast cancer was associated with decreased OS (HR = 2.01, 95% CI = 1.02 to 3.98) and BCSS (HR = 2.15, 95% CI = 1.08 to 4.26). There was no significant interaction between BMI and hormone receptor status in node-negative setting and BMI did not interact with menopausal status in any population.
Conclusions: BMI interacts with hormone receptor status in node positive setting, thereby playing a role in the breast cancer prognosis.
Citation Format: Chung IY, Lee JW, Lee JS, Park YR, Lee Y, Lee SB, Kim HJ, Ko BS, Son BH, Ahn SH. Interaction between body mass index and hormone receptor status as a prognostic factor in node-positive breast cancer [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P6-09-38.
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Affiliation(s)
- IY Chung
- Asan Medical Center, Seoul, Republic of Korea
| | - JW Lee
- Asan Medical Center, Seoul, Republic of Korea
| | - JS Lee
- Asan Medical Center, Seoul, Republic of Korea
| | - YR Park
- Asan Medical Center, Seoul, Republic of Korea
| | - Y Lee
- Asan Medical Center, Seoul, Republic of Korea
| | - SB Lee
- Asan Medical Center, Seoul, Republic of Korea
| | - HJ Kim
- Asan Medical Center, Seoul, Republic of Korea
| | - BS Ko
- Asan Medical Center, Seoul, Republic of Korea
| | - BH Son
- Asan Medical Center, Seoul, Republic of Korea
| | - SH Ahn
- Asan Medical Center, Seoul, Republic of Korea
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34
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Lee JS, Kim MJ, Park SH, Lee SB, Wang T, Jung US, Im J, Kim EJ, Lee KW, Lee HG. Effects of dietary mixture of garlic (Allium sativum), coriander (Coriandrum sativum) and probiotics on immune responses and caecal counts in young laying hens. J Anim Physiol Anim Nutr (Berl) 2016; 101:e122-e132. [PMID: 27678135 DOI: 10.1111/jpn.12573] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 12/30/2015] [Accepted: 06/16/2016] [Indexed: 11/27/2022]
Abstract
This study was conducted to evaluate the effects of a combined mixture of phytogenic extracts (garlic and coriander) and probiotics on growth performance and immune responses in laying hens based on the results of in vitro studies to screen for immunomodulatory potency of each ingredient. Several parameters of immunomodulatory potency were estimated using lamina propria leucocytes (LPLs) isolated from rat intestinal mucosa tissue. Results show that the combined mixture enhanced LPLs proliferation, increased LPL-mediated cytotoxicity against YAC-1 tumour cells, and decreased lipopolysaccharide (LPS)-induced cytokine production including tumour necrosis factor-α (TNF-α) and interferon-γ (IFN-γ) in LPLs. For in vivo study, laying hens (n = 50/each diet group) were fed with control diet, a diet containing antibiotics (0.01% per kg feed) or the combined mixture (0.02% per kg feed) for 21 days. The dietary combined mixture improved egg production (p < 0.05) but not growth performance and carcass traits. Interestingly, the patterns of suppressing plasma IFN-γ productions during inflammation by LPS injection and decreasing caecal E. coli counts in the combined mixture group were comparable to those in the antibiotics group. Taken together, our results suggested that the 0.02% of combined mixture of phytogenic extracts and probiotics as ingredients has potential immunomodulatory effects in laying hens.
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Affiliation(s)
- J S Lee
- Department of Animal Science and Technology, College of Animal Bioscience & Technology, Konkuk University, Gwangjin-gu, Seoul, Korea.,Team of An Educational Program for Specialists in Global Animal Science, Brain Korea 21 Plus Project, Konkuk University, Gwangjin-gu, Seoul, Korea
| | - M J Kim
- Department of Animal Science and Technology, College of Animal Bioscience & Technology, Konkuk University, Gwangjin-gu, Seoul, Korea
| | - S H Park
- Department of Animal Science, College of Natural Resources and Life Science, Pusan National University, Gyeongnam, Korea
| | - S B Lee
- Department of Animal Science and Technology, College of Animal Bioscience & Technology, Konkuk University, Gwangjin-gu, Seoul, Korea
| | - T Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - U S Jung
- Department of Animal Science and Technology, College of Animal Bioscience & Technology, Konkuk University, Gwangjin-gu, Seoul, Korea
| | - J Im
- Department of Medicine, University of Minnesota, Minneapolis, MN, USA
| | - E J Kim
- Division of Animal Husbandry, College of Chonan Yonam, Cheonan-si, Chungnam, Korea
| | - K W Lee
- Department of Animal Science and Technology, College of Animal Bioscience & Technology, Konkuk University, Gwangjin-gu, Seoul, Korea.,Team of An Educational Program for Specialists in Global Animal Science, Brain Korea 21 Plus Project, Konkuk University, Gwangjin-gu, Seoul, Korea
| | - H G Lee
- Department of Animal Science and Technology, College of Animal Bioscience & Technology, Konkuk University, Gwangjin-gu, Seoul, Korea.,Team of An Educational Program for Specialists in Global Animal Science, Brain Korea 21 Plus Project, Konkuk University, Gwangjin-gu, Seoul, Korea
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Kim CW, Park SN, Lee SB, Kim JJ, Lee HW, Kim YK, Yoon SS. Blue Emitters Based on Aryl End-Capped Pyrene Groups for OLEDs. J Nanosci Nanotechnol 2016; 16:2912-2915. [PMID: 27455733 DOI: 10.1166/jnn.2016.11092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We have synthesized four pyrene-derived blue emitting materials using Suzuki cross coupling reactions. All OLED devices using these materials as emitting materials showed efficient blue electroluminescence (EL). Particularly, a device using 1,1'-(9,9-dimethyl-9H-fluorene-2,7-diyl)bis-pyrene (1) showed best EL properties with the luminous efficiency of 4.32 cd/A, the power efficiency of 3.98 lm/W and the external quantum efficiency of 2.48% at 500 cd/m2.
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Kim YS, Lee JW, Kim J, Lee SB, Yu J, Ko BS, Kim HJ, Son BH, Ahn SH. Abstract P1-11-03: Patient reporting pain intensity immediately after surgery can be associated with underlying depression in women with breast cancer. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p1-11-03] [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
Objective
The aims of this study were to determine the prevalence of severe, definite depression symptoms, as measured using the Center for Epidemiological Studies Depression Scale (CES-D), and the association between high CES-D scores (i.e., ≥25) and sociodemographic and perioperative factors during perioperative period.
Methods
Among 1690 consecutive breast cancer patients who were admitted for definitive breast surgery during the study period, 1499 patients were included in this study. Patients with a past medical history of psychiatric medication or support, a plan for elective surgery due to locoregional recurrence or any metastatic disease were excluded. The CES-D score was checked 1 day before definitive surgeries. The sociodemographic data and perioperative data were analyzed.
Results
The mean CES-D score was 18.5, with 24.1% (362/1499) and 56.7% (850/1499) having high CES-D scores of ≥25 and ≥16, respectively. Multivariate analysis revealed that the number of family members with any malignancy (≥2 vs 0), sedative medication (yes vs no) and postoperative numeric rating scale (NRS) scores (persistent, severe pain vs stably mild pain) were significant associated factors for severe, definite depression symptoms [CES-D score of ≥25: adjusted odds ratio (OR)=1.56, 95% confidence interval (CI)=1.10–2.21, P=0.013; adjusted OR=1.65, 95% CI=1.00–2.71, P=0.048; and adjusted OR=2.14, 95% CI=1.15–3.95, P=0.016, respectively].
Conclusion
Depression may increase the intensity of postoperative acute pain. Self-reporting of persistent postoperative pain intensity is potentially useful in detecting hidden depression symptoms in breast cancer patients during the perioperative period.
Citation Format: Kim YS, Lee JW, Kim J, Lee SB, Yu J, Ko BS, Kim HJ, Son BH, Ahn SH. Patient reporting pain intensity immediately after surgery can be associated with underlying depression in women with breast cancer. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P1-11-03.
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Affiliation(s)
- YS Kim
- Chosun University College of Medicine, Gwangju, Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - JW Lee
- Chosun University College of Medicine, Gwangju, Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - J Kim
- Chosun University College of Medicine, Gwangju, Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - SB Lee
- Chosun University College of Medicine, Gwangju, Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - J Yu
- Chosun University College of Medicine, Gwangju, Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - BS Ko
- Chosun University College of Medicine, Gwangju, Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - HJ Kim
- Chosun University College of Medicine, Gwangju, Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - BH Son
- Chosun University College of Medicine, Gwangju, Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - SH Ahn
- Chosun University College of Medicine, Gwangju, Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Lee JM, Lee SH, Hwang JW, Oh SJ, Kim B, Jung S, Shim SH, Lin PW, Lee SB, Cho MY, Koh YJ, Kim SY, Ahn S, Lee J, Kim KM, Cheong KH, Choi J, Kim KA. Novel strategy for a bispecific antibody: induction of dual target internalization and degradation. Oncogene 2016; 35:4437-46. [PMID: 26853467 DOI: 10.1038/onc.2015.514] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 12/07/2015] [Accepted: 12/14/2015] [Indexed: 02/07/2023]
Abstract
Activation of the extensive cross-talk among the receptor tyrosine kinases (RTKs), particularly ErbB family-Met cross-talk, has emerged as a likely source of drug resistance. Notwithstanding brilliant successes were attained while using small-molecule inhibitors or antibody therapeutics against specific RTKs in multiple cancers over recent decades, a high recurrence rate remains unsolved in patients treated with these targeted inhibitors. It is well aligned with multifaceted properties of cancer and cross-talk and convergence of signaling pathways of RTKs. Thereby many therapeutic interventions have been actively developed to overcome inherent or acquired resistance. To date, no bispecific antibody (BsAb) showed complete depletion of dual RTKs from the plasma membrane and efficient dual degradation. In this manuscript, we report the first findings of a target-specific dual internalization and degradation of membrane RTKs induced by designed BsAbs based on the internalizing monoclonal antibodies and the therapeutic values of these BsAbs. Leveraging the anti-Met mAb able to internalize and degrade by a unique mechanism, we generated the BsAbs for Met/epidermal growth factor receptor (EGFR) and Met/HER2 to induce an efficient EGFR or HER2 internalization and degradation in the presence of Met that is frequently overexpressed in the invasive tumors and involved in the resistance against EGFR- or HER2-targeted therapies. We found that Met/EGFR BsAb ME22S induces dissociation of the Met-EGFR complex from Hsp90, followed by significant degradation of Met and EGFR. By employing patient-derived tumor models we demonstrate therapeutic potential of the BsAb-mediated dual degradation in various cancers.
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Affiliation(s)
- J M Lee
- Open Innovation Team, Samsung Bioepis Co., Ltd., Incheon, South Korea
| | - S H Lee
- Samsung Biomedical Research Institute, Samsung Advanced Institute of Technology (SAIT), Gyeonggi-do, South Korea
| | - J-W Hwang
- Bioassay Group, Quality Evaluation Team, Samsung Bioepis Co., Ltd., Incheon, South Korea
| | - S J Oh
- Open Innovation Team, Samsung Bioepis Co., Ltd., Incheon, South Korea
| | - B Kim
- Open Innovation Team, Samsung Bioepis Co., Ltd., Incheon, South Korea
| | - S Jung
- Open Innovation Team, Samsung Bioepis Co., Ltd., Incheon, South Korea
| | - S-H Shim
- Samsung Biomedical Research Institute, Samsung Advanced Institute of Technology (SAIT), Gyeonggi-do, South Korea
| | - P W Lin
- Cell Engineering Team, Samsung Bioepis Co., Ltd., Incheon, South Korea
| | - S B Lee
- Cell Engineering Team, Samsung Bioepis Co., Ltd., Incheon, South Korea
| | - M-Y Cho
- Samsung Advanced Institute of Technology (SAIT), Gyeonggi-do, South Korea
| | - Y J Koh
- Samsung Advanced Institute of Technology (SAIT), Gyeonggi-do, South Korea
| | - S Y Kim
- Department of Medicine, Division of Hematology-Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - S Ahn
- Department of Pathology and Translational Genomics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - J Lee
- Department of Medicine, Division of Hematology-Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - K-M Kim
- Department of Medicine, Division of Hematology-Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - K H Cheong
- Samsung Advanced Institute of Technology (SAIT), Gyeonggi-do, South Korea
| | - J Choi
- Samsung Biomedical Research Institute, Samsung Advanced Institute of Technology (SAIT), Gyeonggi-do, South Korea
| | - K-A Kim
- Open Innovation Team, Samsung Bioepis Co., Ltd., Incheon, South Korea
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Kim KH, Kim JB, Ji JH, Lee SB, Bae GN. Nanoparticle formation in a chemical storage room as a new incidental nanoaerosol source at a nanomaterial workplace. J Hazard Mater 2015; 298:36-45. [PMID: 26001622 DOI: 10.1016/j.jhazmat.2015.05.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 04/27/2015] [Accepted: 05/01/2015] [Indexed: 06/04/2023]
Abstract
Chemical storage rooms located near engineered nanomaterials (ENMs) workplaces can be a significant source of unintentional nanoaerosol generation. A new incidental nanoparticle source was identified and characterized in a chemical storage room located at an ENMs workplace. Stationary and mobile measurements using on-line instruments and chemical analysis of volatile organic compounds (VOCs) were carried out to identify the source. The number of nanoaerosols emitted from the chemical storage room was found to be several orders of magnitude higher than that existing in the ENMs workplace. VOC analysis showed that the accumulated precursors and oxygenated VOCs in the chemical storage room could be attributed to incidental particle formation via gas-to-particle conversion. We stress the importance of identification of the incidental nanoaerosols to allow characterization of the nanoaerosols at ENMs workplaces, and to estimate additional nanoaerosols exposure, which was previously unknown. Hazardous chemical substances in the workplace have been regulated in many countries; however, most of the regulations are focused on gas-phase or liquid-phase substances. The present study emphasizes the importance of secondary pollutants in particulate form that can be generated from the gas or liquid phase of hazardous chemical substances.
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Affiliation(s)
- K H Kim
- Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
| | - J B Kim
- Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea; Green School (Graduate School of Energy and Environment), Korea University, Seoul 136-713, Republic of Korea
| | - J H Ji
- EcoPictures Co., Ltd., Seoul 137-865, Republic of Korea; Research & Business Foundation, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - S B Lee
- Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
| | - G N Bae
- Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea; Green School (Graduate School of Energy and Environment), Korea University, Seoul 136-713, Republic of Korea.
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Lee S, Kim H, Shin TJ, Tsai E, Richardson JM, Korblova E, Walba DM, Clark NA, Lee SB, Yoon DK. Physico-chemical confinement of helical nanofilaments. Soft Matter 2015; 11:3653-3659. [PMID: 25812081 DOI: 10.1039/c5sm00417a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Helical nanofilaments (HNFs) have attracted much interest because of their unique optical properties, but there have been many hurdles to overcome in using them for the practical applications due to their structural complexity. Here we demonstrate that the molecular configuration and layer conformation of a modulated HNF (HNFs(mod)) can be studied using a physicochemical confinement system. The layer directions affected by the chemical affinity between the mesogen and surface were drastically controlled in surface-modified nanochannels. Furthermore, an in situ experiment using grazing-incidence X-ray diffraction (GIXD) was carried out to investigate in detail the structural evolution through thermal transitions. The results demonstrate that the HNF(mod) structure can be perfectly controlled for functional HNF device applications, and a combined system with chemical and physical confinement effects will be helpful to better understand the fundamentals of soft matter.
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Affiliation(s)
- S Lee
- Graduate School of Nanoscience and Technology and KINC, KAIST, Daejeon, 305-701, Republic of Korea.
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Kim DS, Kang C, Kim DH, Kim SC, Lee SH, Jeong JH, Kang TS, Jung SM, Lee SB, Lee KW, Kim RB. External validation of the prognostic index in acute paraquat poisoning. Hum Exp Toxicol 2015; 35:366-70. [PMID: 25977258 DOI: 10.1177/0960327115586821] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Some studies have evaluated the prognostic indicators associated with acute paraquat (PQ) poisoning. In this study, we externally validated the Yamaguchi index, which showed a good prognostic relevance in predicting the outcome of PQ poisoning. METHODS A retrospective analysis of 297 patients was performed. The Yamaguchi index was calculated using the following equation: Eq1 = (K(+) × HCO3(-))/(Creatinine × 0.088)(mEq/L) against time from PQ ingestion (T). The patients were divided into three groups: group A: Eq1 > 1500 - 399 × log T, group B: 930 - 399 × log T < Eq1 ≤ 1500 - 399 × log T, and group C: Eq1 ≤ 930 - 399 × log T). RESULTS The overall mortality rate was 65.3% (194 of 297). The mortality rates of the three groups stratified by the Yamaguchi index were 7.1% (2 of 28), 22.4% (15 of 67), and 87.6% (177 of 202). The area under the receiver-operating characteristic curve for predicting mortality from the external validation of the Yamaguchi index was 0.842 (95% confidence interval: 0.795-0.882). CONCLUSION The Yamaguchi index is a reliable prognostic factor and could be helpful in predicting mortality due to PQ poisoning.
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Affiliation(s)
- D S Kim
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - C Kang
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - D H Kim
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - S C Kim
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - S H Lee
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - J H Jeong
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - T S Kang
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - S M Jung
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - S B Lee
- Department of Emergency Medicine, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - K W Lee
- Department of Emergency Medicine, Catholic University of Daegu, Daegu, Republic of Korea
| | - R B Kim
- Department of Preventive Medicine, Dong-A University, Busan, Republic of Korea
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Affiliation(s)
- K H Lee
- Department of Pharmacology, Catholic University Medical College, Seoul, Korea
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Ong YSP, Chen LL, Wong JA, Gunawan Y, Goh WJ, Tan MC, Lee SB. Evaluating the Impact of Drug Dispensing Systems on the Safety and Efficacy in a Singapore Outpatient Pharmacy. Value Health 2014; 17:A791-A792. [PMID: 27202953 DOI: 10.1016/j.jval.2014.08.440] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- Y S P Ong
- SINGAPORE GENERAL HOSPITAL, Singapore
| | - L L Chen
- Singapore General Hospital, Singapore
| | - J A Wong
- SINGAPORE GENERAL HOSPITAL, Singapore
| | - Y Gunawan
- SINGAPORE GENERAL HOSPITAL, Singapore
| | - W J Goh
- SINGAPORE GENERAL HOSPITAL, Singapore
| | - M C Tan
- SINGAPORE GENERAL HOSPITAL, Singapore
| | - S B Lee
- SINGAPORE GENERAL HOSPITAL, Singapore
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Sarangerel O, Kang K, Lee SB, Yun JH, Batsuren D, Tunsag J, Nho CW. Hepatoprotective effects of Paeonia anomala against acetaminophen-induced cell damage through activation of anti-oxidant system. Mong J Chem 2014. [DOI: 10.5564/mjc.v14i0.190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Overdose of the analgesic and anti-pyretic acetaminophen causes a potentially fatal hepatic necrosis due to a high toxicity and depletion of cellular defense mechanisms. In the present work, the potential hepatoprotective effect of the fruit extract of Paeonia anomala against acetaminophen induced cell damages was evaluated in cultured HepG2 cells and compared to the root extract. The fruit extract showed a potent protection against acetaminophen induced cell death, while the root extract showed a weak protection. Particularly, the pre-treatment of lower doses of the fruit extract, 10 μg/ mL and 20 μg/mL, significantly enhanced cell viability. The level of total glutathione in HepG2 cells treated with the fruit extract prior to the treatment of 40 mM acetaminophen was enhanced, however, the root extract failed for this activity. In addition, activities of quinone reductase, glutathione peroxidase and glutathione reductase were increased and protein levels of glutathione peroxidase 1 and superoxide dismutase 1 were enhanced in the cells treated with 10-20 μg/mL of the fruit extract. Furthermore, the protein level of Nrf2, a crucial regulator for detoxifying and antioxidant systems, was increased by the fruit extract treatment. These results suggest that the fruit extract of P. anomala exerts protective effects against acetaminophen-induced toxicity through activation of key antioxidant systems.DOI: http://dx.doi.org/10.5564/mjc.v14i0.190 Mongolian Journal of Chemistry 14 (40), 2013, p.5-11
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Lee SB, Choi CW, Jin YC, Wang T, Lee KH, Ku MB, Hwang JH, Kim KH, Vega RSA, Lee HG. Effect of Oral Administration of Intact Casein on Gastrointestinal Hormone Secretion and Pancreatic α-Amylase Activity in Korean Native Steer. Asian-Australas J Anim Sci 2014; 26:654-60. [PMID: 25049835 PMCID: PMC4093330 DOI: 10.5713/ajas.2012.12510] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [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: 09/18/2012] [Revised: 02/14/2013] [Accepted: 11/15/2012] [Indexed: 11/27/2022]
Abstract
Three Korean native steers (779±24 kg) fitted with duodenal cannulas were used in a 3×3 Latin square design to investigate the influence of oral administration of soluble proteins, intact casein (IC) and acid hydrolyzed casein (AHC), on gastrointestinal hormone (GIH) secretion in the blood and pancreatic α-amylase activity in the duodenum. Oral treatment consisted of a basic diet (control), IC (C+100% protein), or AHC (C+80% amino acid, 20% peptide) for 21 d. Blood and duodenum samples were collected for measurement of serum GI hormones, and pancreatic α-amylase activity was determined at 900, 1030, 1330, 1630, and 1930 h after feeding on d 21 of treatment. The levels of serum cholecystokinin (CCK) and secretin in the IC treatment group were higher compared to the other treatment groups (p<0.05). In addition to the changes in CCK and secretin levels upon IC treatment, the pancreatic α-amylase activity in the duodenum was higher in the IC group compared to the control diet group (p<0.05). The response of serum ghrelin to IC and AHC treatment was in accordance with the response of serum secretin. The level of peptide fragments flowing in the duodenum was higher in the IC treatment group than the other treatment groups (p<0.05). In conclusion, this study demonstrated that an increase in duodenal CCK and secretin upon IC oral administration increased pancreatic α-amylase secretion. In addition, ghrelin may be associated with GI hormone secretion in Korean native steers.
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Affiliation(s)
- S B Lee
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - C W Choi
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - Y C Jin
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - T Wang
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - K H Lee
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - M B Ku
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - J H Hwang
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - K H Kim
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - R S A Vega
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
| | - H G Lee
- Department of Animal Science and Technology, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, Korea
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Kim B, Wang S, Lee JM, Jeong Y, Ahn T, Son DS, Park HW, Yoo HS, Song YJ, Lee E, Oh YM, Lee SB, Choi J, Murray JC, Zhou Y, Song PH, Kim KA, Weiner LM. Synthetic lethal screening reveals FGFR as one of the combinatorial targets to overcome resistance to Met-targeted therapy. Oncogene 2014; 34:1083-93. [PMID: 24662823 DOI: 10.1038/onc.2014.51] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 12/30/2013] [Accepted: 01/14/2014] [Indexed: 12/28/2022]
Abstract
Met is a receptor tyrosine kinase that promotes cancer progression. In addition, Met has been implicated in resistance of tumors to various targeted therapies such as epidermal growth factor receptor inhibitors in lung cancers, and has been prioritized as a key molecular target for cancer therapy. However, the underlying mechanism of resistance to Met-targeting drugs is poorly understood. Here, we describe screening of 1310 genes to search for key regulators related to drug resistance to an anti-Met therapeutic antibody (SAIT301) by using a small interfering RNA-based synthetic lethal screening method. We found that knockdown of 69 genes in Met-amplified MKN45 cells sensitized the antitumor activity of SAIT301. Pathway analysis of these 69 genes implicated fibroblast growth factor receptor (FGFR) as a key regulator for antiproliferative effects of Met-targeting drugs. Inhibition of FGFR3 increased target cell apoptosis through the suppression of Bcl-xL expression, followed by reduced cancer cell growth in the presence of Met-targeting drugs. Treatment of cells with the FGFR inhibitors substantially restored the efficacy of SAIT301 in SAIT301-resistant cells and enhanced the efficacy in SAIT301-sensitive cells. In addition to FGFR3, integrin β3 is another potential target for combination treatment with SAIT301. Suppression of integrin β3 decreased AKT phosphorylation in SAIT301-resistant cells and restored SAIT301 responsiveness in HCC1954 cells, which are resistant to SAIT301. Gene expression analysis using CCLE database shows that cancer cells with high levels of FGFR and integrin β3 are resistant to crizotinib treatment, suggesting that FGFR and integrin β3 could be used as predictive markers for Met-targeted therapy and provide a potential therapeutic option to overcome acquired and innate resistance for the Met-targeting drugs.
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Affiliation(s)
- B Kim
- BioTherapeutics Lab, Samsung Advanced Institute of Technology (SAIT), Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - S Wang
- Lombardi Comprehensive Cancer Center, Department of Oncology, Georgetown University Medical Center, Washington, DC, USA
| | - J M Lee
- BioTherapeutics Lab, Samsung Advanced Institute of Technology (SAIT), Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - Y Jeong
- BioTherapeutics Lab, Samsung Advanced Institute of Technology (SAIT), Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - T Ahn
- BioTherapeutics Lab, Samsung Advanced Institute of Technology (SAIT), Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - D-S Son
- BioTherapeutics Lab, Samsung Advanced Institute of Technology (SAIT), Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - H W Park
- BioTherapeutics Lab, Samsung Advanced Institute of Technology (SAIT), Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - H-s Yoo
- BioTherapeutics Lab, Samsung Advanced Institute of Technology (SAIT), Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - Y-J Song
- BioTherapeutics Lab, Samsung Advanced Institute of Technology (SAIT), Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - E Lee
- BioTherapeutics Lab, Samsung Advanced Institute of Technology (SAIT), Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - Y M Oh
- BioTherapeutics Lab, Samsung Advanced Institute of Technology (SAIT), Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - S B Lee
- BioTherapeutics Lab, Samsung Advanced Institute of Technology (SAIT), Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - J Choi
- BioTherapeutics Lab, Samsung Advanced Institute of Technology (SAIT), Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - J C Murray
- Lombardi Comprehensive Cancer Center, Department of Oncology, Georgetown University Medical Center, Washington, DC, USA
| | - Y Zhou
- Biostatistics and Bioinformatics Facility, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - P H Song
- BioTherapeutics Lab, Samsung Advanced Institute of Technology (SAIT), Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - K-A Kim
- BioTherapeutics Lab, Samsung Advanced Institute of Technology (SAIT), Giheung-gu, Yongin-si, Gyeonggi-do, South Korea
| | - L M Weiner
- Lombardi Comprehensive Cancer Center, Department of Oncology, Georgetown University Medical Center, Washington, DC, USA
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Koo BS, Lee HR, Jeon EO, Jang HS, Han MS, Min KC, Lee SB, Kim JJ, Mo IP. An outbreak of lymphomas in a layer chicken flock previously infected with fowlpox virus containing integrated reticuloendotheliosis virus. Avian Dis 2014; 57:812-7. [PMID: 24597128 DOI: 10.1637/10551-041113-case.r1] [Citation(s) in RCA: 11] [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: 11/05/2022]
Abstract
Visceral lymphomas occurred in a 236-day-old layer flock previously diagnosed with reticuloendotheliosis virus (REV)-integrated fowlpox virus (FPV) infection at the age of 77 days. Common pathologic lesions were multiple neoplastic nodules of homogeneous lymphocytes in the livers and spleens of all submitted chickens. All neoplastic tissues were positive for the REV envelope (env) gene by PCR. In a retrospective molecular study of FPV-infected 77-day-old chickens from the same flock, we identified nearly full-length REV provirus integrated into the genome of FPV as well as the REV env gene in trachea samples, whereas only the REV LTR region was present in the FPV strain used to vaccinate this flock. The 622-bp REV env gene nucleotide sequence derived from the trachea and neoplastic tissues was identical. Commercial ELISA of serum samples revealed that all chickens aged between 17 and 263 days in this flock were positive for REV but not for avian leukosis virus. Taken together, the evidence suggests that the visceral lymphomas were caused by a REV-integrated FPV field strain. FPV infections of commercial chickens should be followed up by careful monitoring for manifestations of REV infection, including lymphomas and immune depression, considering the ease with which the REV provirus appears to be able to integrate into the FPV genome.
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Affiliation(s)
- B S Koo
- Avian Disease Laboratory, College of Veterinary Medicine, Chungbuk National University, Cheongju, 361-763, Korea
| | - H R Lee
- Avian Disease Laboratory, College of Veterinary Medicine, Chungbuk National University, Cheongju, 361-763, Korea
| | - E O Jeon
- Avian Disease Laboratory, College of Veterinary Medicine, Chungbuk National University, Cheongju, 361-763, Korea
| | - H S Jang
- Avian Disease Laboratory, College of Veterinary Medicine, Chungbuk National University, Cheongju, 361-763, Korea
| | - M S Han
- Avian Disease Laboratory, College of Veterinary Medicine, Chungbuk National University, Cheongju, 361-763, Korea
| | - K C Min
- Avian Disease Laboratory, College of Veterinary Medicine, Chungbuk National University, Cheongju, 361-763, Korea
| | - S B Lee
- Avian Disease Laboratory, College of Veterinary Medicine, Chungbuk National University, Cheongju, 361-763, Korea
| | - J J Kim
- Avian Disease Laboratory, College of Veterinary Medicine, Chungbuk National University, Cheongju, 361-763, Korea
| | - I P Mo
- Avian Disease Laboratory, College of Veterinary Medicine, Chungbuk National University, Cheongju, 361-763, Korea
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Ko HR, Kim CK, Lee SB, Song J, Lee KH, Kim KK, Park KW, Cho SW, Ahn JY. P42 Ebp1 regulates the proteasomal degradation of the p85 regulatory subunit of PI3K by recruiting a chaperone-E3 ligase complex HSP70/CHIP. Cell Death Dis 2014; 5:e1131. [PMID: 24651434 PMCID: PMC3973206 DOI: 10.1038/cddis.2014.79] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 01/29/2014] [Accepted: 01/30/2014] [Indexed: 01/28/2023]
Abstract
The short isoform of ErbB3-binding protein 1 (Ebp1), p42, is considered to be a potent tumor suppressor in a number of human cancers, although the mechanism by which it exerts this tumor-suppressive activity is unclear. Here, we report that p42 interacts with the cSH2 domain of the p85 subunit of phosphathidyl inositol 3-kinase (PI3K), leading to inhibition of its lipid kinase activity. Importantly, we found that p42 induces protein degradation of the p85 subunit and further identified HSP70/CHIP complex as a novel E3 ligase for p85 that is responsible for p85 ubiquitination and degradation. In this process, p42 couples p85 to the HSP70/CHIP-mediated ubiquitin–proteasomal system (UPS), thereby promoting a reduction of p85 levels both in vitro and in vivo. Thus, the tumor-suppressing effects of p42 in cancer cells are driven by negative regulation of the p85 subunit of PI3K.
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Affiliation(s)
- H R Ko
- Department of Molecular Cell Biology, Center for Molecular Medicine, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Korea
| | - C K Kim
- Department of Molecular Cell Biology, Center for Molecular Medicine, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Korea
| | - S B Lee
- Department of Molecular Cell Biology, Center for Molecular Medicine, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Korea
| | - J Song
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, Korea
| | - K-H Lee
- Department of Anatomy, Sungkyunkwan University School of Medicine, Suwon, Korea
| | - K K Kim
- Department of Molecular Cell Biology, Center for Molecular Medicine, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Korea
| | - K W Park
- Department of Food Science and Biotechnology, Sungkyunkwan University, Suwon, Korea
| | - S-W Cho
- Department of Biochemistry and Molecular Biology, University of Ulsan, College of Medicine, Seoul, Korea
| | - J-Y Ahn
- Department of Molecular Cell Biology, Center for Molecular Medicine, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Korea
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Koo BS, Lee HR, Jeon EO, Han MS, Min KC, Lee SB, Mo IP. Molecular survey of enteric viruses in commercial chicken farms in Korea with a history of enteritis. Poult Sci 2013; 92:2876-85. [PMID: 24135590 PMCID: PMC7194588 DOI: 10.3382/ps.2013-03280] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Several enteric viruses have increasingly received attention as potential causative agents of runting-stunting syndrome (RSS) in chickens. A molecular survey was performed to determine the presence of a broad range of enteric viruses, namely chicken astrovirus (CAstV), avian nephritis virus (ANV), chicken parvovirus (ChPV), infectious bronchitis virus (IBV), avian rotavirus (AvRV), avian reovirus (ARV), and fowl adenovirus (FAdV), in intestinal samples derived from 34 commercial chicken flocks that experienced enteritis outbreaks between 2010 and 2012. Using techniques such as PCR and reverse-transcription PCR, enteric viruses were identified in a total of 85.3% of investigated commercial chicken flocks in Korea. Furthermore, diverse combinations of 2 or more enteric viruses were simultaneously identified in 51.7% of chicken farms positive for enteric viruses. The rank order of positivity for enteric viruses was as follows: ANV (44.1%), CAstV (38.2%), ChPV (26.5%), IBV (20.6%), ARV (8.8%), AvRV (5.9%), and FAdV (2.9%). Additionally, other pathogens such as Escherichia coli, Salmonella spp., Eimeria spp., and FAdV were detected in 79% of chicken flocks positive for enteric viruses using PCR, bacterial isolation, and microscopic examination. The results of our study indicate the presence of several enteric viruses with various combinations in commercial chicken farms that experienced enteritis outbreaks. Experimental studies are required to further understand the roles of enteric viruses in RSS in commercial chickens.
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Affiliation(s)
- B S Koo
- College of Veterinary Medicine, Chungbuk National University, 410 SungBong-Ro, Cheongju-si, Chungbuk, 361-763, Korea
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Jin GH, Choi GR, Park HH, Lee TS, Lee SB. Defining gross tumor volume using positron emission tomography/computed tomography phantom studies. Annu Int Conf IEEE Eng Med Biol Soc 2013; 2013:2473-6. [PMID: 24110228 DOI: 10.1109/embc.2013.6610041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Tumor volume and standard uptake value (SUV) calculated from positron emission tomography/computed tomography (PET/CT) images differ from their real values. Besides errors introduced by scintillation materials, photomultiplier tubes, and image reconstruction algorithms, measurements are affected by patients' prostheses, body movements, and body shape. To address these problems, we calculated tumor volume and SUV using the standard phantom (PET Phantom-NEMA IEC/2001) and obtained calibration constants. We found that while tumor volume increases with increasing SUV and tumor diameter, it also increases with increasing SUV and decreasing tumor diameter. Conversely, tumor volume decreases with decreasing SUV and tumor diameter and with decreasing SUV and increasing diameter. These results suggest that a correction factor should be applied to SUV and tumor volume obtained from PET/CT images.
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Wei LL, Shang DS, Sun JR, Lee SB, Sun ZG, Shen BG. Gradual electroforming and memristive switching in Pt/CuO(x)/Si/Pt systems. Nanotechnology 2013; 24:325202. [PMID: 23867151 DOI: 10.1088/0957-4484/24/32/325202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report a memristive switching effect in Pt/CuOx/Si/Pt devices prepared by the rf sputtering technique at room temperature. Differently from other Cu-based metal filament switching systems, a gradual electroforming process, marked by a gradual increase of the device resistance and a gradual decrease of the device capacitance, was observed in the current-voltage and capacitance characteristics. After the gradual electroforming, the devices show a uniform memristive switching behavior. By Auger electron spectroscopy analysis, a model based on the thickness change of the SiOx layer at the CuOx/Si interface and Cu ion migration is proposed for the gradual electroforming and uniform memristive switching, respectively. This work should be meaningful for the preparation of forming-free and homogeneous memristive devices.
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Affiliation(s)
- L L Wei
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, People's Republic of China
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