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Uptake of Flaxseed Dietary Linusorbs Modulates Regulatory Genes Including Induction of Heat Shock Proteins and Apoptosis. Foods 2022; 11:foods11233761. [PMID: 36496568 PMCID: PMC9741104 DOI: 10.3390/foods11233761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/17/2022] [Accepted: 11/18/2022] [Indexed: 11/24/2022] Open
Abstract
Flaxseed (Linum usitatissimum L.) is gaining popularity as a superfood due to its health-promoting properties. Mature flax grain includes an array of biologically active cyclic peptides or linusorbs (LOs, also known as cyclolinopeptides) that are synthesized from three or more ribosome-derived precursors. Two flaxseed orbitides, [1-9-NαC]-linusorb B3 and [1-9-NαC]-linusorb B2, suppress immunity, induce apoptosis in a cell line derived from human epithelial cancer cells (Calu-3), and inhibit T-cell proliferation, but the mechanism of LO action is unknown. LO-induced changes in gene expression in both nematode cultures and human cancer cell lines indicate that LOs promoted apoptosis. Specific evidence of LO bioactivity included: (1) distribution of LOs throughout the organism after flaxseed consumption; (2) induction of heat shock protein (HSP) 70A, an indicator of stress; (3) induction of apoptosis in Calu-3 cells; and (4) modulation of regulatory genes (determined by microarray analysis). In specific cancer cells, LOs induced apoptosis as well as HSPs in nematodes. The uptake of LOs from dietary sources indicates that these compounds might be suitable as delivery platforms for a variety of biologically active molecules for cancer therapy.
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2
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Kabakov AE, Gabai VL. HSP70s in Breast Cancer: Promoters of Tumorigenesis and Potential Targets/Tools for Therapy. Cells 2021; 10:cells10123446. [PMID: 34943954 PMCID: PMC8700403 DOI: 10.3390/cells10123446] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/25/2021] [Accepted: 12/03/2021] [Indexed: 12/20/2022] Open
Abstract
The high frequency of breast cancer worldwide and the high mortality among women with this malignancy are a serious challenge for modern medicine. A deeper understanding of the mechanisms of carcinogenesis and emergence of metastatic, therapy-resistant breast cancers would help development of novel approaches to better treatment of this disease. The review is dedicated to the role of members of the heat shock protein 70 subfamily (HSP70s or HSPA), mainly inducible HSP70, glucose-regulated protein 78 (GRP78 or HSPA5) and GRP75 (HSPA9 or mortalin), in the development and pathogenesis of breast cancer. Various HSP70-mediated cellular mechanisms and pathways which contribute to the oncogenic transformation of mammary gland epithelium are reviewed, as well as their role in the development of human breast carcinomas with invasive, metastatic traits along with the resistance to host immunity and conventional therapeutics. Additionally, intracellular and cell surface HSP70s are considered as potential targets for therapy or sensitization of breast cancer. We also discuss a clinical implication of Hsp70s and approaches to targeting breast cancer with gene vectors or nanoparticles downregulating HSP70s, natural or synthetic (small molecule) inhibitors of HSP70s, HSP70-binding antibodies, HSP70-derived peptides, and HSP70-based vaccines.
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Affiliation(s)
- Alexander E. Kabakov
- Department of Radiation Biochemistry, A. Tsyb Medical Radiological Research Center—Branch of the National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, Koroleva 4, 249036 Obninsk, Russia;
| | - Vladimir L. Gabai
- CureLab Oncology Inc., Dedham, MA 02026, USA
- Correspondence: ; Tel.: +1-617-319-7314
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3
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Ahmadi SE, Rahimi S, Zarandi B, Chegeni R, Safa M. MYC: a multipurpose oncogene with prognostic and therapeutic implications in blood malignancies. J Hematol Oncol 2021; 14:121. [PMID: 34372899 PMCID: PMC8351444 DOI: 10.1186/s13045-021-01111-4] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 06/12/2021] [Indexed: 12/17/2022] Open
Abstract
MYC oncogene is a transcription factor with a wide array of functions affecting cellular activities such as cell cycle, apoptosis, DNA damage response, and hematopoiesis. Due to the multi-functionality of MYC, its expression is regulated at multiple levels. Deregulation of this oncogene can give rise to a variety of cancers. In this review, MYC regulation and the mechanisms by which MYC adjusts cellular functions and its implication in hematologic malignancies are summarized. Further, we also discuss potential inhibitors of MYC that could be beneficial for treating hematologic malignancies.
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Affiliation(s)
- Seyed Esmaeil Ahmadi
- Department of Hematology and Blood Banking, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Samira Rahimi
- Department of Hematology and Blood Banking, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Bahman Zarandi
- Department of Hematology and Blood Banking, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Rouzbeh Chegeni
- Medical Laboratory Sciences Program, College of Health and Human Sciences, Northern Illinois University, DeKalb, IL, USA.
| | - Majid Safa
- Department of Hematology and Blood Banking, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran.
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran.
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4
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Feng Y, Xia W, He G, Ke R, Liu L, Xie M, Tang A, Yi X. Accuracy Evaluation and Comparison of 14 Diagnostic Markers for Nasopharyngeal Carcinoma: A Meta-Analysis. Front Oncol 2020; 10:1779. [PMID: 33072558 PMCID: PMC7531263 DOI: 10.3389/fonc.2020.01779] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 08/11/2020] [Indexed: 12/14/2022] Open
Abstract
The aim of the present study was to collect published studies and compare the diagnostic accuracy of different markers for nasopharyngeal carcinoma (NPC). We systematically searched PubMed/MEDLINE, EMBASE, Cochrane Library, CNKI, and Wanfang for relevant studies until April 29, 2020. The revised Quality Assessment of Diagnostic Accuracy Studies (QUADAS-2) tool was used to evaluate the methodological quality of the studies. The sensitivity, specificity, positive likelihood ratio (PLR), negative likelihood ratio (NLR), diagnostic odds ratio (DOR), and area under the curve (AUC) values of the diagnostic markers were combined by a bivariate mixed effect model to compare their diagnostic accuracy. We explored heterogeneity through meta-regression. In total, 244 records from 101 articles were included, with 49,432 total study subjects (13,109 cases and 36,323 controls). EA-IgG, Zta-IgG, and Epstein-Barr virus (EBV) DNA load in non-invasive nasopharyngeal brushings (EBV-DNA brushings) have both high sensitivity and specificity, EBNA1-IgG and VCA-IgG have only high sensitivity, and EBNA1-IgA, VCA-IgA, Rta-IgG, Zta-IgA, HSP70, and serum sialic acid (SA) have only high specificity. The bivariate mixed effect model of EA-IgA had a significant threshold effect. Meta-regression analysis showed that ethnicity affected EBNA1-IgA, EBNA1-IgG, VCA-IgA, and EBV DNA load in plasma, test methods affected EBNA1-IgG, publication year affected VCA-IgA, and sample size affected Rta-IgG. There was significant publication bias for VCA-IgA and Rta-IgG (P < 0.05). EA-IgG, Zta-IgG, and EBV-DNA brushings are good diagnostic markers for NPC. The diagnostic accuracy was influenced by publication year, sample size, test methods, and ethnicity.
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Affiliation(s)
- Yiwei Feng
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, China
- First Clinical Medical College, Guangxi Medical University, Nanning, China
| | - Wei Xia
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, China
- First Clinical Medical College, Guangxi Medical University, Nanning, China
| | - Guangyao He
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Rongdan Ke
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Lei Liu
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Mao Xie
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Anzhou Tang
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Xiang Yi
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Nanning, China
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5
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Meshalkina DA, Shevtsov MA, Dobrodumov AV, Komarova EY, Voronkina IV, Lazarev VF, Margulis BA, Guzhova IV. Knock-down of Hdj2/DNAJA1 co-chaperone results in an unexpected burst of tumorigenicity of C6 glioblastoma cells. Oncotarget 2017; 7:22050-63. [PMID: 26959111 PMCID: PMC5008343 DOI: 10.18632/oncotarget.7872] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 02/20/2016] [Indexed: 01/04/2023] Open
Abstract
The chaperone system based on Hsp70 and proteins of the DnaJ family is known to protect tumor cells from a variety of cytotoxic factors, including anti-tumor therapy. To analyze whether this also functions in a highly malignant brain tumor, we knocked down the expression of Hsp70 (HSPA1A) and its two most abundant co-chaperones, Hdj1 (DNAJB1) and Hdj2 (DNAJA1) in a C6 rat glioblastoma cell line. As expected, tumor depletion of Hsp70 caused a substantial reduction in its growth rate and increased the survival of tumor-bearing animals, whereas the reduction of Hdj1 expression had no effect. Unexpectedly, a reduction in the expression of Hdj2 led to the enhanced aggressiveness of the C6 tumor, demonstrated by its rapid growth, metastasis formation and a 1.5-fold reduction in the lifespan of tumor-bearing animals. The in vitro reduction of Hdj2 expression reduced spheroid density and simultaneously enhanced the migration and invasion of C6 cells. At the molecular level, a knock-down of Hdj2 led to the relocation of N-cadherin and the enhanced activity of metalloproteinases 1, 2, 8 and 9, which are markers of highly malignant cancer cells. The changes in the actin cytoskeleton in Hdj2-depleted cells indicate that the protein is also important for prevention of the amoeboid-like transition of tumor cells. The results of this study uncover a completely new role for the Hdj2 co-chaperone in tumorigenicity and suggest that the protein is a potential drug target.
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Affiliation(s)
- Darya A Meshalkina
- Institute of Cytology of Russian Academy of Sciences, St. Petersburg 194064, Russia
| | - Maxim A Shevtsov
- Institute of Cytology of Russian Academy of Sciences, St. Petersburg 194064, Russia.,First I.P. Pavlov State Medical University of St. Petersburg, St. Petersburg 197022, Russia
| | - Anatoliy V Dobrodumov
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, St. Petersburg 199004, Russia
| | - Elena Y Komarova
- Institute of Cytology of Russian Academy of Sciences, St. Petersburg 194064, Russia
| | - Irina V Voronkina
- Institute of Cytology of Russian Academy of Sciences, St. Petersburg 194064, Russia
| | - Vladimir F Lazarev
- Institute of Cytology of Russian Academy of Sciences, St. Petersburg 194064, Russia
| | - Boris A Margulis
- Institute of Cytology of Russian Academy of Sciences, St. Petersburg 194064, Russia
| | - Irina V Guzhova
- Institute of Cytology of Russian Academy of Sciences, St. Petersburg 194064, Russia
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6
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Grimmig T, Moll EM, Kloos K, Thumm R, Moench R, Callies S, Kreckel J, Vetterlein M, Pelz J, Polat B, Tripathi S, Rehder R, Ribas CM, Chandraker A, Germer CT, Waaga-Gasser AM, Gasser M. Upregulated Heat Shock Proteins After Hyperthermic Chemotherapy Point to Induced Cell Survival Mechanisms in Affected Tumor Cells From Peritoneal Carcinomatosis. CANCER GROWTH AND METASTASIS 2017; 10:1179064417730559. [PMID: 29403306 PMCID: PMC5791678 DOI: 10.1177/1179064417730559] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 08/07/2017] [Indexed: 01/06/2023]
Abstract
In patients with peritoneal carcinomatosis cytoreductive surgery combined with hyperthermic intraperitoneal chemotherapy (HIPEC) represents a promising treatment strategy. Here, we studied the role of hyperthermic chemotherapy on heat shock protein (HSP) expression and induction of tumor cell death and survival. HSP27, HSP70, and HSP90 combined with effects on tumor cell proliferation and chemosensitivity were analyzed in human colon cancer. Hyperthermic chemotherapy resulted in significant HSP27/HSP70 and HSP90 gene/protein overexpression in analyzed HT-29/SW480/SW620 colon cancer cells and peritoneal metastases from patients displaying amplified expression of proliferation markers, proliferating cell nuclear antigen and antiapoptotic protein Bcl-xL. Moreover, functionally increased chemoresistance against 5-fluorouracil/mitomycin C and oxaliplatin after hyperthermic chemotherapy points to induced survival mechanisms in cancer cells. In conclusion, the results indicate that intracellular HSP-associated antiapoptotic and proliferative effects after hyperthermic chemotherapy negatively influence beneficial effects of hyperthermic chemotherapy-induced cell death. Therefore, blocking HSPs could be a promising strategy to further improve the rate of tumor cell death and outcome of patients undergoing HIPEC therapy.
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Affiliation(s)
- Tanja Grimmig
- Department of Surgery I, Molecular Oncology and Immunology, University of Wuerzburg, Wuerzburg, Germany
| | - Eva-Maria Moll
- Department of Surgery I, Molecular Oncology and Immunology, University of Wuerzburg, Wuerzburg, Germany
| | - Kerstin Kloos
- Department of Surgery I, Molecular Oncology and Immunology, University of Wuerzburg, Wuerzburg, Germany
| | - Rebecca Thumm
- Department of Surgery I, Molecular Oncology and Immunology, University of Wuerzburg, Wuerzburg, Germany
| | - Romana Moench
- Department of Surgery I, Molecular Oncology and Immunology, University of Wuerzburg, Wuerzburg, Germany
| | - Simone Callies
- Department of Surgery I, Molecular Oncology and Immunology, University of Wuerzburg, Wuerzburg, Germany
| | - Jennifer Kreckel
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University of Wuerzburg, Wuerzburg, Germany
| | - Malte Vetterlein
- Department of Urology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Joerg Pelz
- Department of Surgery I, University of Wuerzburg, Wuerzburg, Germany
| | - Buelent Polat
- Department of Radiation Oncology, University of Wuerzburg, Wuerzburg, Germany
| | - Sudipta Tripathi
- Transplant Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Roberta Rehder
- Evangelical Medical School, Faculty University of Parana, Curitiba, Brazil
| | - Carmen M Ribas
- Evangelical Medical School, Faculty University of Parana, Curitiba, Brazil
| | - Anil Chandraker
- Transplant Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Ana Maria Waaga-Gasser
- Department of Surgery I, Molecular Oncology and Immunology, University of Wuerzburg, Wuerzburg, Germany.,Transplant Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Martin Gasser
- Department of Surgery I, University of Wuerzburg, Wuerzburg, Germany
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7
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Unrestrained AMPylation targets cytosolic chaperones and activates the heat shock response. Proc Natl Acad Sci U S A 2016; 114:E152-E160. [PMID: 28031489 DOI: 10.1073/pnas.1619234114] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Protein AMPylation is a conserved posttranslational modification with emerging roles in endoplasmic reticulum homeostasis. However, the range of substrates and cell biological consequences of AMPylation remain poorly defined. We expressed human and Caenorhabditis elegans AMPylation enzymes-huntingtin yeast-interacting protein E (HYPE) and filamentation-induced by cyclic AMP (FIC)-1, respectively-in Saccharomyces cerevisiae, a eukaryote that lacks endogenous protein AMPylation. Expression of HYPE and FIC-1 in yeast induced a strong cytoplasmic Hsf1-mediated heat shock response, accompanied by attenuation of protein translation, massive protein aggregation, growth arrest, and lethality. Overexpression of Ssa2, a cytosolic heat shock protein (Hsp)70, was sufficient to partially rescue growth. In human cell lines, overexpression of active HYPE similarly induced protein aggregation and the HSF1-dependent heat shock response. Excessive AMPylation also abolished HSP70-dependent influenza virus replication. Our findings suggest a mode of Hsp70 inactivation by AMPylation and point toward a role for protein AMPylation in the regulation of cellular protein homeostasis beyond the endoplasmic reticulum.
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8
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Sherman MY, Gabai VL. Hsp70 in cancer: back to the future. Oncogene 2015; 34:4153-61. [PMID: 25347739 PMCID: PMC4411196 DOI: 10.1038/onc.2014.349] [Citation(s) in RCA: 166] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 09/08/2014] [Accepted: 09/22/2014] [Indexed: 12/24/2022]
Abstract
Mechanistic studies from cell culture and animal models have revealed critical roles for the heat shock protein Hsp70 in cancer initiation and progression. Surprisingly, many effects of Hsp70 on cancer have not been related to its chaperone activity, but rather to its role(s) in regulating cell signaling. A major factor that directs Hsp70 signaling activity appears to be the co-chaperone Bag3. Here, we review these recent breakthroughs, and how these discoveries drive drug development efforts.
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Affiliation(s)
- Michael Y. Sherman
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, 02118, Tel 617-638-5971, Fax 617-638-5339
| | - Vladimir L. Gabai
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, 02118, Tel 617-638-5971, Fax 617-638-5339
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9
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Komarova EY, Meshalkina DA, Aksenov ND, Pchelin IM, Martynova E, Margulis BA, Guzhova IV. The discovery of Hsp70 domain with cell-penetrating activity. Cell Stress Chaperones 2015; 20:343-54. [PMID: 25387797 PMCID: PMC4326381 DOI: 10.1007/s12192-014-0554-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 10/21/2014] [Accepted: 10/28/2014] [Indexed: 12/19/2022] Open
Abstract
Chaperone Hsp70 can cross the plasma membrane of living cells using mechanisms that so far have not received much research attention. Searching the part of the molecule that is responsible for transport ability of Hsp70, we found a cationic sequence composed of 20 amino acid residues on its surface, KST peptide, which was used in further experiments. We showed that KST peptide enters living cells of various origins with the same efficiency as the full-length chaperone. KST peptide is capable of carrying cargo with a molecular weight 30 times greater than its own into cells. When we compared the membrane-crossing activity of KST peptide in complex with Avidin (KST-Av complex) with that of similarly linked canonical TAT peptide, we found that TAT peptide penetrated SK-N-SH human neuroblastoma cells at a similar rate and efficiency as the KST peptide. Furthermore, KST peptide can carry protein complexes consisting of a specific antibody coupled to the peptide through the Avidin bridge. An antibody to Hsp70 delivered to SK-N-SH cells with high expression level of Hsp70 reduced the protective power of the chaperone and sensitized the cells to the pro-apoptotic effect of staurosporine. We studied the mechanisms of penetration of KST-Av and full-length Hsp70 inside human neuroblastoma SK-N-SH and human erythroleukemia K-562 cells and found that both used an active intracellular transport mechanism that included vesicular structures and negatively charged lipid membrane domains. Competition analysis of intracellular transport showed that the chaperone reduced intracellular penetration of KST peptide and conversely KST peptide prevented Hsp70 transport in a dose-dependent manner.
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Affiliation(s)
- Elena Y. Komarova
- />Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St. Petersburg, Russia 194064
| | - Darya A. Meshalkina
- />Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St. Petersburg, Russia 194064
| | - Nikolay D. Aksenov
- />Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St. Petersburg, Russia 194064
| | - Ivan M. Pchelin
- />Kashkin Research Institute of Medical Mycology, North-Western State Medical University named after I.I. Mechnikov, 1/28, Santiago-de-Cuba Str., St. Petersburg, Russia 194291
| | - Elena Martynova
- />Albert Einstein College of Medicine, 1300 Morris Park Avenue, Ullmann 123, Bronx, NY 10461 USA
| | - Boris A. Margulis
- />Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St. Petersburg, Russia 194064
| | - Irina V. Guzhova
- />Institute of Cytology, Russian Academy of Sciences, Tikhoretsky pr. 4, St. Petersburg, Russia 194064
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10
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Shiota M, Tanaka M. [Novel feature of the HSP70 family]. Nihon Yakurigaku Zasshi 2014; 143:310-312. [PMID: 24919558 DOI: 10.1254/fpj.143.310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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11
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Žáčková M, Moučková D, Lopotová T, Ondráčková Z, Klamová H, Moravcová J. Hsp90 — a potential prognostic marker in CML. Blood Cells Mol Dis 2013. [DOI: 10.1016/j.bcmd.2012.11.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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12
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Goloudina AR, Demidov ON, Garrido C. Inhibition of HSP70: a challenging anti-cancer strategy. Cancer Lett 2012; 325:117-24. [PMID: 22750096 DOI: 10.1016/j.canlet.2012.06.003] [Citation(s) in RCA: 165] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 06/11/2012] [Accepted: 06/18/2012] [Indexed: 12/15/2022]
Abstract
HSP70 is a chaperone that accumulates in the cells after many different stresses promoting cell survival in response to the adverse conditions. In contrast to normal cells, most cancer cells abundantly express HSP70 at the basal level to resist to various insults at different stages of tumorigenesis and during anti-cancer treatment. This cancer cells addiction for HSP70 is the rational for its targeting in cancer therapy. Much effort has been dedicated in the last years for the active search of HSP70 inhibitors. Additionally, the recent clinical trials on highly promising inhibitors of another stress protein, HSP90, showed compensatory increase in HSP70 levels and raised the question of necessity to combine HSP90 inhibitors with simultaneous inhibition of HSP70. Here we analyzed the recent advancement in creation of novel HSP70 inhibitors and different strategies for their use in anti-cancer therapy.
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Affiliation(s)
- Anastasia R Goloudina
- Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche, University of Burgundy, Dijon, France
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13
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Merhi F, Tang R, Piedfer M, Mathieu J, Bombarda I, Zaher M, Kolb JP, Billard C, Bauvois B. Hyperforin inhibits Akt1 kinase activity and promotes caspase-mediated apoptosis involving Bad and Noxa activation in human myeloid tumor cells. PLoS One 2011; 6:e25963. [PMID: 21998731 PMCID: PMC3188562 DOI: 10.1371/journal.pone.0025963] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Accepted: 09/14/2011] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND The natural phloroglucinol hyperforin HF displays anti-inflammatory and anti-tumoral properties of potential pharmacological interest. Acute myeloid leukemia (AML) cells abnormally proliferate and escape apoptosis. Herein, the effects and mechanisms of purified HF on AML cell dysfunction were investigated in AML cell lines defining distinct AML subfamilies and primary AML cells cultured ex vivo. METHODOLOGY AND RESULTS HF inhibited in a time- and concentration-dependent manner the growth of AML cell lines (U937, OCI-AML3, NB4, HL-60) by inducing apoptosis as evidenced by accumulation of sub-G1 population, phosphatidylserine externalization and DNA fragmentation. HF also induced apoptosis in primary AML blasts, whereas normal blood cells were not affected. The apoptotic process in U937 cells was accompanied by downregulation of anti-apoptotic Bcl-2, upregulation of pro-apoptotic Noxa, mitochondrial membrane depolarization, activation of procaspases and cleavage of the caspase substrate PARP-1. The general caspase inhibitor Z-VAD-fmk and the caspase-9- and -3-specific inhibitors, but not caspase-8 inhibitor, significantly attenuated apoptosis. HF-mediated apoptosis was associated with dephosphorylation of active Akt1 (at Ser(473)) and Akt1 substrate Bad (at Ser(136)) which activates Bad pro-apoptotic function. HF supppressed the kinase activity of Akt1, and combined treatment with the allosteric Akt1 inhibitor Akt-I-VIII significantly enhanced apoptosis of U937 cells. SIGNIFICANCE Our data provide new evidence that HF's pro-apoptotic effect in AML cells involved inhibition of Akt1 signaling, mitochondria and Bcl-2 members dysfunctions, and activation of procaspases -9/-3. Combined interruption of mitochondrial and Akt1 pathways by HF may have implications for AML treatment.
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Affiliation(s)
- Faten Merhi
- INSERM U872, Université Pierre et Marie Curie, Université Paris Descartes, Centre de Recherche des Cordeliers, Paris, France
| | - Ruoping Tang
- INSERM U872, Université Pierre et Marie Curie, Université Paris Descartes, Centre de Recherche des Cordeliers, Paris, France
- AP-HP, Département d'Hématologie, Hôpital St Antoine, Paris, France
| | - Marion Piedfer
- INSERM U872, Université Pierre et Marie Curie, Université Paris Descartes, Centre de Recherche des Cordeliers, Paris, France
| | | | - Isabelle Bombarda
- ISM2-AD2M, UMR CNRS 6263, Université Paul Cézanne, Marseille, France
| | - Murhaf Zaher
- INSERM U872, Université Pierre et Marie Curie, Université Paris Descartes, Centre de Recherche des Cordeliers, Paris, France
| | - Jean-Pierre Kolb
- INSERM U872, Université Pierre et Marie Curie, Université Paris Descartes, Centre de Recherche des Cordeliers, Paris, France
| | - Christian Billard
- INSERM U872, Université Pierre et Marie Curie, Université Paris Descartes, Centre de Recherche des Cordeliers, Paris, France
| | - Brigitte Bauvois
- INSERM U872, Université Pierre et Marie Curie, Université Paris Descartes, Centre de Recherche des Cordeliers, Paris, France
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14
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Sasaki N, Kuroda J, Nagoshi H, Yamamoto M, Kobayashi S, Tsutsumi Y, Kobayashi T, Shimura Y, Matsumoto Y, Taki T, Nishida K, Horiike S, Akao Y, Taniwaki M. Bcl-2 is a better therapeutic target than c-Myc, but attacking both could be a more effective treatment strategy for B-cell lymphoma with concurrent Bcl-2 and c-Myc overexpression. Exp Hematol 2011; 39:817-28.e1. [PMID: 21640157 DOI: 10.1016/j.exphem.2011.05.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Revised: 04/30/2011] [Accepted: 05/02/2011] [Indexed: 12/30/2022]
Abstract
OBJECTIVE The prognosis for diffuse large B-cell lymphomas with concomitant overexpression of c-Myc and Bcl-2 remains dismal; there is an urgent need to clarify the significance of these two oncogenes as therapeutic targets for a more effective treatment strategy. MATERIALS AND METHODS We established two novel cell lines, KPUM-MS3 and KPUM-UH1, from two chemoresistant patients with diffuse large B-cell lymphomas with concomitant overexpression of c-Myc and Bcl-2, and investigated the significance of c-Myc and Bcl-2 as therapeutic targets. RESULTS KPUM-MS3 possesses t(14;18)(q32;q21) chromosomal translocation and KPUM-UH1 bcl-2 gene amplification, both of which account for Bcl-2 overexpression. Chromosomal translocation t(8;14)(q24;q34) was found to coexist only in KPUM-UH1, overexpression of pvt-1 messenger RNA was detected only in KPUM-MS3, and reduced expression of miR-143 and miR-145 was identified in both. Working together, these abnormalities can contribute to c-Myc overexpression. Using ABT-263, an inhibitor for Bcl-2, and 10058-F4, an inhibitor for c-Myc, we found that both cell lines were more highly sensitive to cell death as a result of Bcl-2 inhibition than of c-Myc inhibition. When combined with genotoxic agents, ABT-263 exerted additive and/or synergistic cell-killing effects, while 10058-F4 showed, at most, a modest combinatory effect. Importantly, the combination of ABT-263 and 10058-F4 had a synergistic cell-killing effect on both cell lines. CONCLUSIONS Our data suggest that Bcl-2 is a better therapeutic target than c-Myc, but attacking both Bcl-2 and c-Myc would be an even more effective treatment strategy for diffuse large B-cell lymphomas with concurrent Bcl-2 and c-Myc overexpression.
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MESH Headings
- Aniline Compounds/pharmacology
- Antineoplastic Agents/pharmacology
- Blotting, Western
- Cell Line, Tumor
- Cell Survival/drug effects
- Chromosomes, Human, Pair 14/genetics
- Chromosomes, Human, Pair 18/genetics
- Cytarabine/pharmacology
- Dose-Response Relationship, Drug
- Doxorubicin/pharmacology
- Drug Synergism
- Etoposide/pharmacology
- Gene Expression Regulation, Neoplastic
- Humans
- Lymphoma, Large B-Cell, Diffuse/genetics
- Lymphoma, Large B-Cell, Diffuse/metabolism
- Lymphoma, Large B-Cell, Diffuse/pathology
- MicroRNAs/genetics
- Proto-Oncogene Proteins c-bcl-2/antagonists & inhibitors
- Proto-Oncogene Proteins c-bcl-2/genetics
- Proto-Oncogene Proteins c-bcl-2/metabolism
- Proto-Oncogene Proteins c-myc/antagonists & inhibitors
- Proto-Oncogene Proteins c-myc/genetics
- Proto-Oncogene Proteins c-myc/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Spectral Karyotyping
- Sulfonamides/pharmacology
- Thiazoles/pharmacology
- Translocation, Genetic
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Affiliation(s)
- Nana Sasaki
- Division of Hematology and Oncology, Department of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
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15
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Yang X, He H, Yang W, Song T, Guo C, Zheng X, Liu Q. Effects of HSP70 antisense oligonucleotide on the proliferation and apoptosis of human hepatocellular carcinoma cells. ACTA ACUST UNITED AC 2010; 30:337-43. [PMID: 20556578 DOI: 10.1007/s11596-010-0353-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Indexed: 12/19/2022]
Abstract
The study investigated the effects of heat shock protein 70 (HSP70) antisense oligonucleotide (ASODN) on the proliferation and apoptosis of a human hepatocellular carcinoma cell line (SMMC-7721 cells) in vitro. HSP70 oligonucleotide was transfected into SMMC-7721 cells by the mediation of Sofast transfection reagent. Inhibition rate of SMMC-7721 cells was determined by using MTT method. Apoptosis rate and cell cycle distribution were measured by flow cytometry. Immunocytochemistry staining was used to observe the expression of HSP70, Bcl-2 and Bax. The results showed that HSP70 ASODN at various concentrations could significantly inhibit the growth of SMMC-7721 cells, and the inhibition effect peaked 48 h after transfection with 400-nmol/L HSP70 ASODN. Cytometric analysis showed the apoptotic rate was increased in a dose- and time-dependent manner in the HSP70 ASODN-treated cells. The percentage of cells in the G2/M and S phases was significantly decreased and that in the G0/G1 phase increased as the HSP70 ASODN concentration was elevated and the exposure time prolonged. Immunocytochemistry showed that treatment of SMMC-7721 cells with HSP70 ASODN resulted in decreased expressions of HSP70 and Bcl-2 proteins, and an increased expression of Bax protein. It was concluded that the HSP70 ASODN can inhibit the growth of the SMMC-7721 cells and increase cell apoptosis by down-regulating the expression of HSP70. HSP70 ASODN holds promise for the treatment of hepatocellular carcinoma.
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Affiliation(s)
- Xue Yang
- Department of Hepatobiliary Surgery, the First Affiliated Hospital, Medical School of Xi'an Jiaotong University, Xi'an, 710061, China.
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16
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Larsson LG, Henriksson MA. The Yin and Yang functions of the Myc oncoprotein in cancer development and as targets for therapy. Exp Cell Res 2010; 316:1429-37. [PMID: 20382143 DOI: 10.1016/j.yexcr.2010.03.025] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2010] [Accepted: 03/31/2010] [Indexed: 12/21/2022]
Abstract
The Myc proto-oncoprotein coordinates a number of normal physiological processes necessary for growth and expansion of somatic cells by controlling the expression of numerous target genes. Deregulation of MYC as a consequence of carciogenic events enforces cells to undergo a transition to a hyperproliferative state. This increases the risk of additional oncogenic mutations that in turn can result in further tumor progression. However, Myc activation also provokes intrinsic tumor suppressor mechanisms including apoptosis, cellular senescence and DNA damage responses that act as barriers for tumor development and therefore needs to be overcome during tumorigenesis. Myc thus possesses two seemingly contradictory "faces" here referred to as "Yin and Yang". Observations that many tumor suppressor pathways remain intact but are latent in tumor cells opens the possibility that pharmacological inhibition of the Yin or activation of the Yang functions can prevail and offer new attractive approaches for treating diverse types of cancer.
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Affiliation(s)
- Lars-Gunnar Larsson
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Box 280, 171 77 Stockholm, Sweden.
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17
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Han DY, Kang SR, Park OS, Cho JH, Won CK, Park HS, Park KI, Kim EH, Kim GS. Polychlorinated biphenyls have inhibitory effect on testicular steroidogenesis by downregulation of P45017α and P450scc. Toxicol Ind Health 2010; 26:287-96. [DOI: 10.1177/0748233710364961] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Polychlorinated biphenyls (PCBs) are environmental pollutants that are quite toxic to biological systems. This study examined the inhibitory effect of PCB126 and PCB114 on testicular steroidogenesis in male rats. Male Sprague Dawley rats received weekly intraperitoneal injections of PCB126 (0.2 mg/kg) or PCB114 (20 mg/kg) or vehicle (corn oil). Animals from each group were sacrificed at 2, 5 and 8 weeks after the injections. Blood and testis tissue samples were collected for the hormone assay, Western blotting and reverse transcriptase polymerase chain reaction (RT-PCR). The testosterone, luteinizing hormone (LH) and follicle-stimulating hormone (FSH) levels were assayed, and the expression levels of the mRNA and proteins associated with the testosterone biosynthesis pathway were measured to determine the effect of PCB126 and PCB114 on testicular steroidogenesis. The results showed that the testis weight was significantly higher in the PCB126-treated rats given eight shots. Moreover, the serum testosterone levels were significantly lower in the PCB126 and PCB114-treated groups than the control. The transcription and translation levels of P45017α and P450scc were significantly lower in the PCB126-treated groups than the control. These results suggest that PCB126 may affect testicular steroidogenesis by downregulating P45017α, P450 scc and have inhibitory effect on the testicular functions.
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Affiliation(s)
- Dae-Yong Han
- Research Institute of Life Science and College of Veterinary Medicine, Gyeongsang National University, Jinju, Korea
| | - Sang-Rim Kang
- Research Institute of Life Science and College of Veterinary Medicine, Gyeongsang National University, Jinju, Korea
| | - Oh-Sung Park
- Research Institute of Life Science and College of Veterinary Medicine, Gyeongsang National University, Jinju, Korea
| | - Jae-Hyeon Cho
- Research Institute of Life Science and College of Veterinary Medicine, Gyeongsang National University, Jinju, Korea
| | - Chung-Kil Won
- Research Institute of Life Science and College of Veterinary Medicine, Gyeongsang National University, Jinju, Korea
| | - Hyeon-Soo Park
- Research Institute of Life Science and College of Veterinary Medicine, Gyeongsang National University, Jinju, Korea
| | - Kwang-Il Park
- Research Institute of Life Science and College of Veterinary Medicine, Gyeongsang National University, Jinju, Korea
| | - Eun-Hee Kim
- Department of Physical Therapy, International University of Korea, Jinju, Korea
| | - Gon-Sup Kim
- Research Institute of Life Science and College of Veterinary Medicine, Gyeongsang National University, Jinju, Korea,
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18
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Guerra L, Albihn A, Tronnersjö S, Yan Q, Guidi R, Stenerlöw B, Sterzenbach T, Josenhans C, Fox JG, Schauer DB, Thelestam M, Larsson LG, Henriksson M, Frisan T. Myc is required for activation of the ATM-dependent checkpoints in response to DNA damage. PLoS One 2010; 5:e8924. [PMID: 20111719 PMCID: PMC2811743 DOI: 10.1371/journal.pone.0008924] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2009] [Accepted: 01/05/2010] [Indexed: 01/20/2023] Open
Abstract
Background The MYC protein controls cellular functions such as differentiation, proliferation, and apoptosis. In response to genotoxic agents, cells overexpressing MYC undergo apoptosis. However, the MYC-regulated effectors acting upstream of the mitochondrial apoptotic pathway are still unknown. Principal Findings In this study, we demonstrate that expression of Myc is required to activate the Ataxia telangiectasia mutated (ATM)-dependent DNA damage checkpoint responses in rat cell lines exposed to ionizing radiation (IR) or the bacterial cytolethal distending toxin (CDT). Phosphorylation of the ATM kinase and its downstream effectors, such as histone H2AX, were impaired in the myc null cell line HO15.19, compared to the myc positive TGR-1 and HOmyc3 cells. Nuclear foci formation of the Nijmegen Breakage Syndrome (Nbs) 1 protein, essential for efficient ATM activation, was also reduced in absence of myc. Knock down of the endogenous levels of MYC by siRNA in the human cell line HCT116 resulted in decreased ATM and CHK2 phosphorylation in response to irradiation. Conversely, cell death induced by UV irradiation, known to activate the ATR-dependent checkpoint, was similar in all the cell lines, independently of the myc status. Conclusion These data demonstrate that MYC contributes to the activation of the ATM-dependent checkpoint responses, leading to cell death in response to specific genotoxic stimuli.
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Affiliation(s)
- Lina Guerra
- Departments of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Ami Albihn
- Departments of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Susanna Tronnersjö
- Departments of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Qinzi Yan
- Departments of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Riccardo Guidi
- Departments of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Bo Stenerlöw
- Division of Biomedical Radiation Sciences, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Torsten Sterzenbach
- Institute for Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Hannover, Germany
| | - Christine Josenhans
- Institute for Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Hannover, Germany
| | - James G. Fox
- Department of Biological Engineering, Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - David B. Schauer
- Department of Biological Engineering, Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Monica Thelestam
- Departments of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Lars-Gunnar Larsson
- Departments of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
- Department of Plant Biology and Forest Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Marie Henriksson
- Departments of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Teresa Frisan
- Departments of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
- * E-mail:
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19
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Tang FQ, Duan CJ, Huang DM, Wang WW, Xie CL, Meng JJ, Wang L, Jiang HY, Feng DY, Wu SH, Gu HH, Li MY, Deng FL, Gong ZJ, Zhou H, Xu YH, Tan C, Zhang X, Cao Y. HSP70 and mucin 5B: novel protein targets of N,N'-dinitrosopiperazine-induced nasopharyngeal tumorigenesis. Cancer Sci 2009; 100:216-24. [PMID: 19068094 PMCID: PMC11159833 DOI: 10.1111/j.1349-7006.2008.01028.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
N,N'-Dinitrosopiperazine (DNP) induces nasopharyngeal carcinoma (NPC) and shows organ specificity to the nasopharyngeal epithelium. To investigate its mechanism, the rat NPC model was induced using DNP. Rat NPC and normal nasopharyngeal cells were obtained from the NPC model using laser capture. The total proteins from these cell samples were separated with two-dimension polyacrylamide gel electrophoresis techniques, and highly expressed proteins (> five-fold) were analyzed using matrix-assisted laser desorption/ionization time of flight and bioinformatics. The results showed that HSP70 and mucin 5B expression increased not only in rat NPC but also in atypical hyperplasia nasopharyngeal tissues, a precancer stage of NPC. High-expression of heat shock protein 70 (HSP70) and mucin 5B was further supported by western blot analysis. The immunofluorescence and western-blotting studies further showed that DNP induced the expression of HSP70 and mucin 5B in a dosage-dependent manner in normal nasopharyngeal epithelia cells. Our data indicate that DNP triggers over-expression of HSP70 and mucin 5B, and is involved in nasopharyngeal tumorigenesis. HSP70 and mucin 5B may be important targets in nasopharyngeal tumorigenesis induced by DNP.
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Affiliation(s)
- Fa-Qing Tang
- Xiangya Hospital, Department of Pathology, Xiangya School of Medicine, Central South University,Changsha, Hunan, China.
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