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Klimiuk P, Łopuszyński W, Bulak K, Brzana A. Evaluation of the Proliferative Activity of Diffuse Large B-Cell Lymphoma (DLBCL) in Dogs with Respect to Patient Eligibility for Anthracycline-Based Chemotherapy. Animals (Basel) 2021; 11:ani11041183. [PMID: 33924252 PMCID: PMC8074745 DOI: 10.3390/ani11041183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/12/2021] [Accepted: 04/17/2021] [Indexed: 11/30/2022] Open
Abstract
Simple Summary Canine lymphomas usually have aggressive behavior, but respond well to chemotherapy. Despite proper diagnosis and numerous available therapeutic regimens, it is difficult to determine the prognosis and choose the optimal method of treatment in each individual patient. Diffuse large B-cell lymphoma is the most commonly diagnosed histological subtype of canine lymphoma and is treated with anthracyclines alone or in combination with other chemotherapeutics. A new diagnostic marker of prognostic and predictive value is topoisomerase IIα, which also constitutes a molecular target for anti-cancer drugs belonging to the group of topoisomerase IIα inhibitors including anthracyclines. Proliferative activity was estimated in samples of enlarged lymph nodes in dogs with diffuse large B-cell lymphoma based on mitotic count and immunohistochemical evaluation of topoisomerase IIα and Ki67 antigen expression with a view to qualifying patients for anthracycline-base chemotherapy. It has been shown that higher levels of topoisomerase IIα expression corresponded to a higher mitotic count but not to Ki67 index. These results indicate that an immunohistochemical evaluation of topoisomerase IIα expression can be used to develop a diagnostic-clinical protocol for the treatment of dogs with diffuse large B-cell lymphoma using anthracycline-based chemotherapy. Abstract Different types of canine lymphoma respond differently to chemotherapy and have different prognoses. Diffuse large B-cell lymphoma (DLBCL) is the most common lymphoma in dogs. Topoisomerase II alpha (TOPIIα) protein has been shown to be a proliferation marker associated with prognostic significance. The aim of the study was to determine the relationship between TOPIIα expression, mitotic count (MC), and Ki67 antigen index in DLBCL in dogs, taking into account the applicability of these parameters to select the chemotherapy protocol with emphasis on the use of anthracycline drugs. Samples of formalin-fixed paraffin-embedded lymph nodes from 34 dogs with DLBCL were immunohistochemically labelled with anti-TOPIIα and Ki67. The number of positive cells and the intensity of the reaction were taken into account in order to assess TOPIIα expression. MC was estimated in the hematoxylin and eosin-stained slides in the area of 2.37 mm2. Positive association between TOPIIα and MC, but no association between TOPIIα and Ki67 was found. It can be concluded that the immunohistochemical determination of TOPIIα as a molecular target for drugs from the anthracycline group may be used in association with MC to establish a diagnostic-clinical protocol for selecting dogs with DLBCL for treatment with anthracycline drugs.
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Affiliation(s)
- Paweł Klimiuk
- Veterinary Diagnostic Laboratory VetDiagnostyka, 20-418 Lublin, Poland
- Correspondence: ; Tel.: +48-510-141-271
| | - Wojciech Łopuszyński
- Sub-Department of Pathomorphology and Forensic Veterinary Medicine, Department and Clinic of Animal Internal Diseases, University of Life Sciences in Lublin, 20-601 Lublin, Poland; (W.Ł.); (K.B.)
| | - Kamila Bulak
- Sub-Department of Pathomorphology and Forensic Veterinary Medicine, Department and Clinic of Animal Internal Diseases, University of Life Sciences in Lublin, 20-601 Lublin, Poland; (W.Ł.); (K.B.)
| | - Adam Brzana
- Regional Veterinary Inspectorate in Opole, Regional Veterinary Laboratory, 45-836 Opole, Poland;
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Jain N, Zhu H, Khashab T, Ye Q, George B, Mathur R, Singh RK, Berkova Z, Wise JF, Braun FK, Wang X, Patel K, Xu-Monette ZY, Courty J, Young KH, Sehgal L, Samaniego F. Targeting nucleolin for better survival in diffuse large B-cell lymphoma. Leukemia 2018; 32:663-674. [PMID: 28690315 PMCID: PMC5829046 DOI: 10.1038/leu.2017.215] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 05/18/2017] [Accepted: 06/26/2017] [Indexed: 12/16/2022]
Abstract
Anthracyclines have been a cornerstone in the cure of diffuse large B-cell lymphoma (DLBCL) and other hematological cancers. The ability of anthracyclines to eliminate DLBCL depends on the presence of topoisomerase-II-alpha (TopIIA), a DNA repair enzyme complex. We identified nucleolin as a novel binding partner of TopIIA. Abrogation of nucleolin sensitized DLBCL cells to TopIIA targeting agents (doxorubicin/etoposide). Silencing nucleolin and challenging DLBCL cells with doxorubicin enhanced the phosphorylation of H2AX (γH2AX-marker of DNA damage) and allowed DNA fragmentation. Reconstitution of nucleolin expression in nucleolin-knockdown DLBCL cells prevented TopIIA targeting agent-induced apoptosis. Nucleolin binding to TopIIA was mapped to RNA-binding domain 3 of nucleolin, and this interaction was essential for blocking DNA damage and apoptosis. Nucleolin silencing decreased TopIIA decatenation activity, but enhanced formation of TopIIA-DNA cleavable complexes in the presence of etoposide. Moreover, combining nucleolin inhibitors: aptamer AS1411 or nucant N6L with doxorubicin reduced DLBCL cell survival. These findings are of clinical importance because low nucleolin levels versus high nucleolin levels in DLBCL predicted 90-month estimated survival of 70% versus 12% (P<0.0001) of patients treated with R-CHOP-based therapy.
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MESH Headings
- Antineoplastic Agents/pharmacology
- Antineoplastic Agents/therapeutic use
- Cell Line, Tumor
- DNA Damage
- DNA Topoisomerases, Type II/metabolism
- Female
- Gene Expression
- Humans
- Lymphoma, Large B-Cell, Diffuse/drug therapy
- Lymphoma, Large B-Cell, Diffuse/genetics
- Lymphoma, Large B-Cell, Diffuse/metabolism
- Lymphoma, Large B-Cell, Diffuse/mortality
- Male
- Molecular Targeted Therapy
- Phosphoproteins/antagonists & inhibitors
- Phosphoproteins/genetics
- Phosphoproteins/metabolism
- Poly-ADP-Ribose Binding Proteins/antagonists & inhibitors
- Poly-ADP-Ribose Binding Proteins/metabolism
- RNA-Binding Proteins/antagonists & inhibitors
- RNA-Binding Proteins/genetics
- RNA-Binding Proteins/metabolism
- Nucleolin
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Affiliation(s)
- Neeraj Jain
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
| | - Haifeng Zhu
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
| | - Tamer Khashab
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
- Department of Internal Medicine, Lankenau Medical Center, Wynnewood, Pennsylvania, USA
| | - Qing Ye
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
| | - Bhawana George
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
| | - Rohit Mathur
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
| | - Ram Kumar Singh
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
| | - Zuzana Berkova
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
| | - Jillian F. Wise
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
| | - Frank K. Braun
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
| | - Xin Wang
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
| | - Keyur Patel
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
| | - Zijun Y. Xu-Monette
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
| | - Jose Courty
- Laboratoire de Recherche sur la Croissance Cellulaire, la Réparation et la Régénération Tissulaires, CNRS, Université Paris-Est, 61 avenue du général De Gaulle, 94010 Créteil, France
| | - Ken H. Young
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
| | - Lalit Sehgal
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
| | - Felipe Samaniego
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030
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A systems medicine approach for finding target proteins affecting treatment outcomes in patients with non-Hodgkin lymphoma. PLoS One 2017; 12:e0183969. [PMID: 28892521 PMCID: PMC5593188 DOI: 10.1371/journal.pone.0183969] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Accepted: 08/15/2017] [Indexed: 02/07/2023] Open
Abstract
Autoantibody profiling with a systems medicine approach can help identify critical dysregulated signaling pathways (SPs) in cancers. In this way, immunoglobulins G (IgG) purified from the serum samples of 92 healthy controls, 10 pre-treated (PR) non-Hodgkin lymphoma (NHL) patients, and 20 NHL patients who underwent chemotherapy (PS) were screened with a phage-displayed random peptide library. Protein-protein interaction networks of the PR and PS groups were analyzed and visualized by Gephi. The results indicated AXIN2, SENP2, TOP2A, FZD6, NLK, HDAC2, HDAC1, and EHMT2, in addition to CAMK2A, PLCG1, PLCG2, GRM5, GRIN2B, GRIN2D, CACNA2D3, and SPTAN1 as hubs in 11 and 7 modules of PR and PS networks, respectively. PR- and PS-specific hubs were evaluated in the Kyoto Encyclopedia of Genes and Genomes (KEGG) and Reactome databases. The PR-specific hubs were involved in Wnt SP, signaling by Notch1 in cancer, telomere maintenance, and transcriptional misregulation. In contrast, glutamate receptor SP, Fc receptor-related pathways, growth factors-related SPs, and Wnt SP were statistically significant enriched pathways, based on the pathway analysis of PS hubs. The results revealed that the most PR-specific proteins were associated with events involved in tumor development, while chemotherapy in the PS group was associated with side effects of drugs and/or cancer recurrence. As the findings demonstrated, PR- and PS-specific proteins in this study can be promising therapeutic targets in future studies.
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Papoudou-Bai A, Hatzimichael E, Barbouti A, Kanavaros P. Expression patterns of the activator protein-1 (AP-1) family members in lymphoid neoplasms. Clin Exp Med 2016; 17:291-304. [PMID: 27600282 DOI: 10.1007/s10238-016-0436-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Accepted: 08/23/2016] [Indexed: 12/22/2022]
Abstract
The activator protein-1 (AP-1) is a dimeric transcription factor composed of proteins belonging to the Jun (c-Jun, JunB and JunD), Fos (c-Fos, FosB, Fra1 and Fra2) and activating transcription factor protein families. AP-1 is involved in various cellular events including differentiation, proliferation, survival and apoptosis. Deregulated expression of AP-1 transcription factors is implicated in the pathogenesis of various lymphomas such as classical Hodgkin lymphomas, anaplastic large cell lymphomas, diffuse large B cell lymphomas and adult T cell leukemia/lymphoma. The main purpose of this review is the analysis of the expression patterns of AP-1 transcription factors in order to gain insight into the histophysiology of lymphoid tissues and the pathology of lymphoid malignancies.
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Affiliation(s)
| | | | - Alexandra Barbouti
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, University of Ioannina, Ioannina, Greece
| | - Panagiotis Kanavaros
- Department of Anatomy-Histology-Embryology, Faculty of Medicine, University of Ioannina, Ioannina, Greece.
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Choi YW, Ahn MS, Choi JH, Lee HW, Kang SY, Jeong SH, Park JS, Han JH, Kim JH, Sheen SS. High expression of Bcl-2 predicts poor outcome in diffuse large B-cell lymphoma patients with low international prognostic index receiving R-CHOP chemotherapy. Int J Hematol 2015; 103:210-8. [PMID: 26586460 DOI: 10.1007/s12185-015-1911-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 11/11/2015] [Accepted: 11/12/2015] [Indexed: 11/24/2022]
Abstract
The prognostic significance of Bcl-2, Bcl-6, p53, topoisomerase II, and β-tubulin expression was evaluated in diffuse large B-cell lymphoma (DLBCL) patients treated with cyclophosphamide, doxorubicin, vincristine, prednisolone, and rituximab. Eight-year progression-free survival (PFS, P = 0.006) and overall survival (OS, P = 0.001) of patients with high Bcl-2 expression were significantly inferior to those of patients with low expression without prognostic significance of Bcl-6, p53, topoisomerase II, and β-tubulin expression. High expression of Bcl-2 was associated with poor PFS (P = 0.045) and OS (P = 0.004) only in patients with low international prognostic index (IPI). In multivariate analysis, high expression of Bcl-2 was a significant independent prognostic factor of poor PFS (P = 0.026) and OS (P = 0.007) along with high IPI. In conclusion, the expression of Bcl-2 may be a useful prognostic factor, especially in DLBCL patients with low IPI.
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Affiliation(s)
- Yong Won Choi
- Department of Hematology-Oncology, Ajou University School of Medicine, 164 Worldcup-ro, Yeongtong-Gu, Suwon, 16499, Republic of Korea
| | - Mi Sun Ahn
- Department of Hematology-Oncology, Ajou University School of Medicine, 164 Worldcup-ro, Yeongtong-Gu, Suwon, 16499, Republic of Korea
| | - Jin-Hyuk Choi
- Department of Hematology-Oncology, Ajou University School of Medicine, 164 Worldcup-ro, Yeongtong-Gu, Suwon, 16499, Republic of Korea
| | - Hyun Woo Lee
- Department of Hematology-Oncology, Ajou University School of Medicine, 164 Worldcup-ro, Yeongtong-Gu, Suwon, 16499, Republic of Korea.
| | - Seok Yun Kang
- Department of Hematology-Oncology, Ajou University School of Medicine, 164 Worldcup-ro, Yeongtong-Gu, Suwon, 16499, Republic of Korea
| | - Seong Hyun Jeong
- Department of Hematology-Oncology, Ajou University School of Medicine, 164 Worldcup-ro, Yeongtong-Gu, Suwon, 16499, Republic of Korea
| | - Joon Seong Park
- Department of Hematology-Oncology, Ajou University School of Medicine, 164 Worldcup-ro, Yeongtong-Gu, Suwon, 16499, Republic of Korea
| | - Jae Ho Han
- Department of Pathology, Ajou University School of Medicine, 164 Worldcup-ro, Yeongtong-Gu, Suwon, 16499, Republic of Korea.
| | - Jang-Hee Kim
- Department of Pathology, Ajou University School of Medicine, 164 Worldcup-ro, Yeongtong-Gu, Suwon, 16499, Republic of Korea
| | - Seung Soo Sheen
- Department of Pulmonary and Critical Care Medicine, Ajou University School of Medicine, Suwon, Republic of Korea
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Papoudou-Bai A, Goussia A, Batistatou A, Stefanou D, Malamou-Mitsi V, Kanavaros P. The expression levels of JunB, JunD and p-c-Jun are positively correlated with tumor cell proliferation in diffuse large B-cell lymphomas. Leuk Lymphoma 2015; 57:143-50. [PMID: 25813203 DOI: 10.3109/10428194.2015.1034704] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We analyzed the expression of Jun family in relation to CD30 expression, cell proliferation and B-cell differentiation immunophenotypes [Germinal Center and non-Germinal Center] in diffuse large B-cell lymphomas (DLBCL). Expression and high expression of phosphorylated-c-Jun (p-c-Jun), JunB, JunD and CD30 (cut-off scores 20% and 50%, respectively) was found in 18/103, 49/103, 72/101 and 26/102 cases, respectively, and in 6/103, 27/103, 60/101 and 21/102 cases, respectively. The following significant positive correlations were observed: (a) JunB with cyclin A (p = 0.046), cyclin B1 (p = 0.033), cyclin E (p = 0.003), MUM-1 (p = 0.002) and CD30 (p < 0.001), (b) JunD with Ki67 (p = 0.002) and cyclin E (p = 0.014), (c) p-c-Jun with CD30 (p = 0.015), and (d) high p-c-Jun with cyclin A (p = 0.034). The positive correlation between expression of JunB, JunD and p-c-Jun and tumor cell proliferation in DLBCL, suggests that increased JunB, JunD and p-c-Jun expression may be involved in the pathogenesis of DLBCL by increasing tumor cell proliferation.
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Affiliation(s)
| | - Anna Goussia
- a Department of Pathology , Medical Faculty , University of Ioannina, Ioannina , Greece
| | - Anna Batistatou
- a Department of Pathology , Medical Faculty , University of Ioannina, Ioannina , Greece
| | - Dimitrios Stefanou
- a Department of Pathology , Medical Faculty , University of Ioannina, Ioannina , Greece
| | | | - Panagiotis Kanavaros
- b Department of Anatomy-Histology-Embryology , Medical Faculty , University of Ioannina, Ioannina , Greece
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Lack of topoisomerase copy number changes in patients with de novo and relapsed diffuse large B-cell lymphoma. Exp Hematol 2015; 43:534-6. [PMID: 25931012 DOI: 10.1016/j.exphem.2015.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 04/20/2015] [Indexed: 11/22/2022]
Abstract
Topoisomerase (TOP) gene copy number changes may predict response to treatment with TOP-targeting drugs in cancer treatment. This was first described in patients with breast cancer and is currently being investigated in other malignant diseases. TOP-targeting drugs may induce TOP gene copy number changes at relapse, with possible implications for relapse therapy efficacy. TOP gene alterations in lymphoma are poorly investigated. In this study, TOP1 and TOP2A gene alterations were investigated in patients with de novo diffuse large B-cell lymphoma (DLBCL) (n = 33) and relapsed DLBCL treated with chemotherapy regimens including TOP2-targeting drugs (n = 16). No TOP1 or TOP2A copy number changes were found. Polysomy of chromosomes 20 and 17 was seen in 3 of 25 patients (12%) and 2 of 32 patients (6%) with de novo DLBCL. Among relapsed patients, chromosome polysomy was more frequently observed in 5 of 13 patients (38%) and 4 of 16 patients (25%) harboring chromosome 20 and 17 polysomy, respectively; however, these differences only tended to be significant (p = 0.09 and p = 0.09, respectively). The results suggest that TOP gene copy number changes are very infrequent in DLBCL and not likely induced by TOP2-targeting drugs. Increased polyploidy of chromosomes 17 and 20 among patients with relapsed DLBCL may reflect genetic compensation in the tumor cells after TOP2 inhibition, but is more likely due to the increased genetic instability often seen in progressed cancers. Therefore, it is unlikely that TOP1 and TOP2A gene alterations can be used as predictive markers for response to treatment with TOP2-targeting drugs in patients with DLBCL.
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Rund D. Targeting drug resistance to close the gap in diffuse large B-cell lymphoma. Leuk Lymphoma 2014; 55:1966-7. [PMID: 24588736 DOI: 10.3109/10428194.2014.898762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Deborah Rund
- Hematology Department, Hebrew University-Hadassah Medical Organization , Jerusalem , Israel
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9
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Nobili S, Napoli C, Puccini B, Landini I, Perrone G, Brugia M, Benelli G, Doria M, Martelli M, Finolezzi E, Di Rocco A, Del Fava E, Rigacci L, Di Lollo S, Bosi A, Mini E. Identification of pharmacogenomic markers of clinical efficacy in a dose-dense therapy regimen (R-CHOP14) in diffuse large B-cell lymphoma. Leuk Lymphoma 2014; 55:2071-8. [DOI: 10.3109/10428194.2013.866665] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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10
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Taniai E, Hayashi H, Yafune A, Watanabe M, Akane H, Suzuki K, Mitsumori K, Shibutani M. Cellular distribution of cell cycle-related molecules in the renal tubules of rats treated with renal carcinogens for 28 days: relationship between cell cycle aberration and carcinogenesis. Arch Toxicol 2012; 86:1453-64. [DOI: 10.1007/s00204-012-0829-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Accepted: 02/27/2012] [Indexed: 01/08/2023]
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Chen Z, Wang J, Zhang H, Liu D, Li Y, Xu Y, Tan D, Chen D, Zhao X, Wang G. Topo IIα gene alterations correlated with survival in patients with diffuse large B-cell lymphoma. Eur J Clin Invest 2012; 42:310-20. [PMID: 21880040 DOI: 10.1111/j.1365-2362.2011.02585.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Topoisomerase IIα (topo IIα) protein expression has prognostic significance in many cancers. However, it is still unclear whether topo IIα protein expression and gene alterations play roles as prognostic factors in diffuse large B-cell lymphoma (DLBCL). MATERIALS AND METHODS We selected 102 patients with DLBCL who were homogeneously treated with CHOP chemotherapy and followed up. Using tissue microarray technology, all of the cases, consisting of 25 germinal centre B-cell-like (GCB) and 77 nongerminal centre B-cell-like (non-GCB) types, were studied. Topo IIα protein expression was detected by immunohistochemistry. Gene copy number of topo IIα was analysed by chromogenic in situ hybridization. Cox regression, chi-square test and Kaplan-Meier statistics were performed using SPSS 15·0. RESULTS Topo IIα protein overexpression was found in 91 (91/102, 89·2%) cases, while topo IIα gene amplification was absent in all cases. Chromosome 17 deletion was identified in 3 (3/102, 2·9%) cases, diploid in 66 (66/102, 64·7%) cases and aneuploidy in 33 (33/102, 32·4%) cases. By multivariate analysis, no significant differences in progression-free survival (PFS) and overall survival (OS) were observed in patients with topo IIα protein overexpression (P > 0·05), while chromosome 17 aneuploidy predicted worse PFS and OS (P < 0·001). CONCLUSIONS These results suggested that chromosome 17 aneuploidy, but not topo IIα protein expression, could predict worse survival in patients with DLBCL.
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Affiliation(s)
- Zhenwen Chen
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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12
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Taniai E, Yafune A, Hayashi H, Itahashi M, Hara-Kudo Y, Suzuki K, Mitsumori K, Shibutani M. Aberrant activation of ubiquitin D at G 2 phase and apoptosis by carcinogens that evoke cell proliferation after 28-day administration in rats. J Toxicol Sci 2012. [DOI: 10.2131/jts.37.1093] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Eriko Taniai
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
- Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University
| | - Atsunori Yafune
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
- Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University
- Gotemba Laboratory, Bozo Research Center Inc
| | - Hitomi Hayashi
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
- Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University
| | - Megu Itahashi
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
- Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University
| | | | - Kazuhiko Suzuki
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
| | - Kunitoshi Mitsumori
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
| | - Makoto Shibutani
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
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Novel acridine-based agents with topoisomerase II inhibitor activity suppress mesothelioma cell proliferation and induce apoptosis. Invest New Drugs 2011; 30:1443-8. [DOI: 10.1007/s10637-011-9720-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Accepted: 07/07/2011] [Indexed: 10/18/2022]
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