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Sert Y, Mahendra M, Keskinoğlu S, Srikantamurthy N, Umesha KB, Çırak Ç. FT-IR, Laser-Raman spectra and computational analysis of 5-Methyl-3-phenylisoxazole-4-carboxylic acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 139:145-155. [PMID: 25554964 DOI: 10.1016/j.saa.2014.12.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Revised: 10/16/2014] [Accepted: 12/09/2014] [Indexed: 06/04/2023]
Abstract
In this study the experimental and theoretical vibrational frequencies of a newly synthesized anti-tumor, antiviral, hypoglycemic, antifungal and anti-HIV agent namely, 5-Methyl-3-phenylisoxazole-4-carboxylic acid has been investigated. The experimental FT-IR (4000-400 cm(-1)) and Laser-Raman spectra (4000-100 cm(-1)) of the molecule in solid phase have been recorded. The theoretical vibrational frequencies and optimized geometric parameters (bond lengths, bond angles and torsion angles) have been calculated by using density functional theory (DFT/B3LYP: Becke, 3-parameter, Lee-Yang-Parr and DFT/M06-2X: highly parametrized, empirical exchange correlation function) with 6-311++G(d,p) basis set by Gaussian 09W software, for the first time. The assignments of the vibrational frequencies have been done by potential energy distribution (PED) analysis by using VEDA 4 software. The theoretical optimized geometric parameters and vibrational frequencies have been found to be in good agreement with the corresponding experimental data and results in the literature. In addition, the highest occupied molecular orbital (HOMO) energy, the lowest unoccupied molecular orbital (LUMO) energy and the other related molecular energy values of the compound have been investigated by using the same theoretical calculations.
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Affiliation(s)
- Yusuf Sert
- Department of Physics, Faculty of Art & Sciences, Bozok University, Yozgat 66100, Turkey; Sorgun Vocational School, Bozok University, Yozgat 66100, Turkey.
| | - M Mahendra
- Department of Studies in Physics, Manasagangotri, University of Mysore, Mysore 570006, India
| | - S Keskinoğlu
- Department of Physics, Faculty of Art & Sciences, Bozok University, Yozgat 66100, Turkey
| | - N Srikantamurthy
- Department of Chemistry, Yuvaraja's College, University of Mysore, Mysore 570005, India
| | - K B Umesha
- Department of Chemistry, Yuvaraja's College, University of Mysore, Mysore 570005, India
| | - Ç Çırak
- Department of Physics, Faculty of Art & Sciences, Erzincan University, Erzincan 24100, Turkey
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52
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Sun X, Ou Z, Xie M, Kang R, Fan Y, Niu X, Wang H, Cao L, Tang D. HSPB1 as a novel regulator of ferroptotic cancer cell death. Oncogene 2015; 34:5617-25. [PMID: 25728673 PMCID: PMC4640181 DOI: 10.1038/onc.2015.32] [Citation(s) in RCA: 413] [Impact Index Per Article: 45.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 01/24/2015] [Accepted: 01/24/2015] [Indexed: 12/12/2022]
Abstract
Ferroptosis is an iron-dependent form of non-apoptotic cell death, but its molecular mechanism remains largely unknown. Here, we demonstrate that heat shock protein beta-1 (HSPB1) is a negative regulator of ferroptotic cancer cell death. Erastin, a specific ferroptosis-inducing compound, stimulates heat shock factor 1 (HSF1)-dependent HSPB1 expression in cancer cells. Knockdown of HSF1 and HSPB1 enhances erastin-induced ferroptosis, whereas heat shock pretreatment and overexpression of HSPB1 inhibits erastin-induced ferroptosis. Protein kinase C-mediated HSPB1 phosphorylation confers protection against ferroptosis by reducing iron-mediated production of lipid reactive oxygen species. Moreover, inhibition of the HSF1-HSPB1 pathway and HSPB1 phosphorylation increases the anticancer activity of erastin in human xenograft mouse tumor models. Our findings reveal an essential role for HSPB1 in iron metabolism with important effects on ferroptosis-mediated cancer therapy.
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Affiliation(s)
- X Sun
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Z Ou
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - M Xie
- Department of Pediatrics, Xiangya Hospital, Central South University, Changsha, China
| | - R Kang
- Department of Surgery, University of Pittsburgh Cancer Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Y Fan
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - X Niu
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - H Wang
- Department of Emergency Medicine, North Shore University Hospital, The Feinstein Institute for Medical Research, Manhasset, NY, USA
| | - L Cao
- Department of Pediatrics, Xiangya Hospital, Central South University, Changsha, China
| | - D Tang
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Surgery, University of Pittsburgh Cancer Institute, University of Pittsburgh, Pittsburgh, PA, USA
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53
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De K, Bhaumik A, Banerjee B, Mukhopadhyay C. An expeditious and efficient synthesis of spiro-pyrazolo[3,4-b]pyridines catalysed by recyclable mesoporous aluminosilicate nanoparticles in aqueous-ethanol. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.01.163] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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54
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Feng J, Zhao J, Xie H, Yin Y, Luo G, Zhang J, Feng Y, Li Z. Involvement of NEDD9 in the invasion and migration of gastric cancer. Tumour Biol 2015; 36:3621-8. [PMID: 25577245 DOI: 10.1007/s13277-014-2999-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 12/18/2014] [Indexed: 01/04/2023] Open
Abstract
Recent studies have demonstrated that neural precursor cell expressed, developmentally downregulated 9 (NEDD9) is highly expressed in various tumor tissues and cell lines. However, research on the role of NEDD9 in gastric cancer (GC) is rare, and the potential mechanism in tumor progression has not yet been explored. In this study, we investigated the role and mechanism of NEDD9 in GC. The expression of NEDD9 in GC tissues and cell lines was measured by immunohistochemistry, qRT-PCR, and Western blot, respectively. Inhibiting NEDD9 expression was carried out by siRNA transfection, and upregulating of NEDD9 was via NEDD9 overexpression plasmid. The ability of proliferation, migration, and invasion was detected by MTT assay, scratch wound assay, and transwell assay, respectively. The expression of vimentin, E-cadherin, Zeb1, and Zeb2 was measured by Western blot and qRT-PCR. We found that NEDD9 expression was dramatically increased both in GC tissues and cell lines, and the expression was significantly related to GC development. Knockdown of NEDD9 in SGC-7901 strongly inhibited its malignant capacity in vitro. Meanwhile, upregulation of NEDD9 in GES-1 increased the malignant capacity. In addition, the expression of vimentin, Zeb1, and Zeb2 was positively correlated with NEDD9, while E-cadherin was opposite. Collectively, our findings suggest that NEDD9 acts as an oncogene and promotes GC metastasis via EMT.
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Affiliation(s)
- Jin Feng
- Department of General Surgery, The First People's Hospital of Changzhou, the Third Affiliated Hospital of Soochow University, Changzhou, 213000, China
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55
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Guilbert SM, Varlet AA, Fuchs M, Lambert H, Landry J, Lavoie JN. Regulation of Actin-Based Structure Dynamics by HspB Proteins and Partners. HEAT SHOCK PROTEINS 2015. [DOI: 10.1007/978-3-319-16077-1_18] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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56
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Study of Three-Component Reactions Between 5-Amino-3-Methylisoxazole, N-Arylamides of Acetoacetic Acid, and Aromatic Aldehydes. Chem Heterocycl Compd (N Y) 2014. [DOI: 10.1007/s10593-014-1578-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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57
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Singh S, Suri A. Targeting the testis-specific heat-shock protein 70-2 (HSP70-2) reduces cellular growth, migration, and invasion in renal cell carcinoma cells. Tumour Biol 2014; 35:12695-706. [PMID: 25213699 DOI: 10.1007/s13277-014-2594-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 09/03/2014] [Indexed: 01/24/2023] Open
Abstract
Renal cell carcinoma (RCC) represents one of the most resistant tumors to radiotherapy and chemotherapy. Current therapies for the RCC patients are limited owing to lack of diagnosis and therapeutic treatments. Testis-specific heat-shock protein 70-2 (HSP70-2), a member of HSP70 chaperone family, has been shown to be associated with various cancers. In the present study, we investigated the putative role of HSP70-2 in various malignant properties of the RCC cells. HSP70-2 messenger RNA (mRNA) and protein expression was investigated in A704, ACHN, and Caki-1 cells derived from the RCC patients. We assessed the expression of HSP70-2 gene and protein by reverse transcription-polymerase chain reaction (RT-PCR) and Western blotting, respectively. The expression of HSP70-2 protein was further validated by performing indirect immunofluorescence (IIF) and flow cytometry. The malignant properties of high-grade invasive A704 and Caki-1 cells, such as cellular proliferation, colony formation, migration, invasion, and wound healing, were evaluated by silencing the expression of HSP70-2 gene in these cells. Statistical significance was defined using Student's t test. Our RT-PCR and Western blotting data showed the expression of HSP70-2 in all RCC cells. Our results showed that HSP70-2 was predominantly expressed in cytoplasm and found to be colocalized with endoplasmic reticulum, mitochondria, Golgi body, and plasma membrane but not the nuclear envelope. Knockdown of HSP70-2 expression with specific short hairpin RNA (shRNA) demonstrated significant reduction in cell growth and colony formation. Further, a marked reduction in cell migration and invasion was also observed, indicating the potential role of HSP70-2 in metastasis. Collectively, our data suggest that HSP70-2 plays a key role in cancerous growth and invasive potential of RCC cells. Thus, HSP70-2 could serve as a novel potential therapeutic target for the RCC.
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Affiliation(s)
- Swarnendra Singh
- Cancer Microarray, Genes and Proteins Laboratory, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110 067, India
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58
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Moreno-Domínguez A, El-Yazbi AF, Zhu HL, Colinas O, Zhong XZ, Walsh EJ, Cole DM, Kargacin GJ, Walsh MP, Cole WC. Cytoskeletal reorganization evoked by Rho-associated kinase- and protein kinase C-catalyzed phosphorylation of cofilin and heat shock protein 27, respectively, contributes to myogenic constriction of rat cerebral arteries. J Biol Chem 2014; 289:20939-52. [PMID: 24914207 PMCID: PMC4110300 DOI: 10.1074/jbc.m114.553743] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 06/03/2014] [Indexed: 12/31/2022] Open
Abstract
Our understanding of the molecular events contributing to myogenic control of diameter in cerebral resistance arteries in response to changes in intravascular pressure, a fundamental mechanism regulating blood flow to the brain, is incomplete. Myosin light chain kinase and phosphatase activities are known to be increased and decreased, respectively, to augment phosphorylation of the 20-kDa regulatory light chain subunits (LC20) of myosin II, which permits cross-bridge cycling and force development. Here, we assessed the contribution of dynamic reorganization of the actin cytoskeleton and thin filament regulation to the myogenic response and serotonin-evoked constriction of pressurized rat middle cerebral arteries. Arterial diameter and the levels of phosphorylated LC(20), calponin, caldesmon, cofilin, and HSP27, as well as G-actin content, were determined. A decline in G-actin content was observed following pressurization from 10 mm Hg to between 40 and 120 mm Hg and in three conditions in which myogenic or agonist-evoked constriction occurred in the absence of a detectable change in LC20 phosphorylation. No changes in thin filament protein phosphorylation were evident. Pressurization reduced G-actin content and elevated the levels of cofilin and HSP27 phosphorylation. Inhibitors of Rho-associated kinase and PKC prevented the decline in G-actin; reduced cofilin and HSP27 phosphoprotein content, respectively; and blocked the myogenic response. Furthermore, phosphorylation modulators of HSP27 and cofilin induced significant changes in arterial diameter and G-actin content of myogenically active arteries. Taken together, our findings suggest that dynamic reorganization of the cytoskeleton involving increased actin polymerization in response to Rho-associated kinase and PKC signaling contributes significantly to force generation in myogenic constriction of cerebral resistance arteries.
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Affiliation(s)
| | - Ahmed F. El-Yazbi
- From the Smooth Muscle Research Group, Departments of Physiology & Pharmacology and
| | - Hai-Lei Zhu
- From the Smooth Muscle Research Group, Departments of Physiology & Pharmacology and
| | - Olaia Colinas
- From the Smooth Muscle Research Group, Departments of Physiology & Pharmacology and
| | - X. Zoë Zhong
- From the Smooth Muscle Research Group, Departments of Physiology & Pharmacology and
| | - Emma J. Walsh
- From the Smooth Muscle Research Group, Departments of Physiology & Pharmacology and
| | - Dylan M. Cole
- From the Smooth Muscle Research Group, Departments of Physiology & Pharmacology and
| | - Gary J. Kargacin
- From the Smooth Muscle Research Group, Departments of Physiology & Pharmacology and
| | - Michael P. Walsh
- Biochemistry & Molecular Biology, Libin Cardiovascular Institute and Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta T2N 4N1, Canada
| | - William C. Cole
- From the Smooth Muscle Research Group, Departments of Physiology & Pharmacology and
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59
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Quercetin sensitizes human glioblastoma cells to temozolomide in vitro via inhibition of Hsp27. Acta Pharmacol Sin 2014; 35:832-8. [PMID: 24902789 DOI: 10.1038/aps.2014.22] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Accepted: 02/26/2014] [Indexed: 12/22/2022] Open
Abstract
AIM Quercetin is an effective Hsp27 inhibitor and has been reported to facilitate tumor cell apoptosis. The aim of this study was to investigate whether quercetin could sensitize human glioblastoma cells to temozolomide (TMZ) in vitro. METHODS Both U251 and U87 human glioblastoma cells were treated with quercetin and/or TMZ for 48 h. Cell viability was detected using the MTT assay. Cell apoptosis was analyzed with caspase-3 activity kits and flow cytometry. Hsp27 expression and phosphorylation were examined using Western blot analysis. RNA interference using Hsp27 siRNA oligos was performed to knock down the gene expression of Hsp27. RESULTS TMZ (200 or 400 μmol/L) alone effectively inhibited the viability of U251 and U87 cells. When combined with quercetin (30 μmol/L), TMZ (100 μmol/L) significantly inhibited the cell viability, and the inhibition of TMZ (200 and 400 μmol/L) was enhanced. TMZ or quercetin anole did not affect caspase-3 activity and cell apoptosis, while TMZ combined with quercetin significantly increased caspase-3 activity and induced cell apoptosis. TMZ anole significantly increased Hsp27 phosphorylation in U251 and U87 cells, while quercetin or Hsp27 siRNA oligos combined with TMZ attenuated TMZ-induced Hsp27 phosphorylation and significantly inhibited Hsp27 expression. CONCLUSION Combined treatment with TMZ and quercetin efficiently suppressed human glioblastoma cell survival in vitro.
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60
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Inhibition of STAT3 activation by KT-18618 via the disruption of the interaction between JAK3 and STAT3. Biochem Pharmacol 2014; 89:62-73. [DOI: 10.1016/j.bcp.2014.02.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 02/10/2014] [Accepted: 02/19/2014] [Indexed: 01/02/2023]
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61
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Wang X, Chen M, Zhou J, Zhang X. HSP27, 70 and 90, anti-apoptotic proteins, in clinical cancer therapy (Review). Int J Oncol 2014; 45:18-30. [PMID: 24789222 DOI: 10.3892/ijo.2014.2399] [Citation(s) in RCA: 185] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Accepted: 02/27/2014] [Indexed: 12/16/2022] Open
Abstract
Among the heat shock proteins (HSP), HSP27, HSP70 and HSP90 are the most studied stress-inducible HSPs, and are induced in response to a wide variety of physiological and environmental insults, thus allowing cells to survive to lethal conditions based on their powerful cytoprotective functions. Different functions of HSPs have been described to explain their cytoprotective functions, including their most basic role as molecular chaperones, that is to regulate protein folding, transport, translocation and assembly, especially helping in the refolding of misfolded proteins, as well as their anti-apoptotic properties. In cancer cells, the expression and/or activity of the three HSPs is abnormally high, and is associated with increased tumorigenicity, metastatic potential of cancer cells and resistance to chemotherapy. Associating with key apoptotic factors, they are powerful anti-apoptotic proteins, having the capacity to block the cell death process at different levels. Altogether, the properties suggest that HSP27, HSP70 and HSP90 are appropriate targets for modulating cell death pathways. In this review, we summarize the role of HSP90, HSP70 and HSP27 in apoptosis and the emerging strategies that have been developed for cancer therapy based on the inhibition of the three HSPs.
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Affiliation(s)
- Xiaoxia Wang
- College of Basic Medicine, Nanjing University of Chinese Medicine, Nanjing 210046, P.R. China
| | - Meijuan Chen
- College of Basic Medicine, Nanjing University of Chinese Medicine, Nanjing 210046, P.R. China
| | - Jing Zhou
- College of Basic Medicine, Nanjing University of Chinese Medicine, Nanjing 210046, P.R. China
| | - Xu Zhang
- College of Basic Medicine, Nanjing University of Chinese Medicine, Nanjing 210046, P.R. China
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62
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Han L, Zhang B, Zhu M, Yan J. An environmentally benign synthesis of isoxazolines and isoxazoles mediated by potassium chloride in water. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.02.118] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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63
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Rao W, Li H, Song F, Zhang R, Yin Q, Wang Y, Xi Y, Ge H. OVA66 increases cell growth, invasion and survival via regulation of IGF-1R–MAPK signaling in human cancer cells. Carcinogenesis 2014; 35:1573-81. [DOI: 10.1093/carcin/bgu070] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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64
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Arrigo AP, Gibert B. HspB1, HspB5 and HspB4 in Human Cancers: Potent Oncogenic Role of Some of Their Client Proteins. Cancers (Basel) 2014; 6:333-65. [PMID: 24514166 PMCID: PMC3980596 DOI: 10.3390/cancers6010333] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 01/03/2014] [Accepted: 01/17/2014] [Indexed: 12/20/2022] Open
Abstract
Human small heat shock proteins are molecular chaperones that regulate fundamental cellular processes in normal unstressed cells as well as in many cancer cells where they are over-expressed. These proteins are characterized by cell physiology dependent changes in their oligomerization and phosphorylation status. These structural changes allow them to interact with many different client proteins that subsequently display modified activity and/or half-life. Nowdays, the protein interactomes of small Hsps are under intense investigations and will represent, when completed, key parameters to elaborate therapeutic strategies aimed at modulating the functions of these chaperones. Here, we have analyzed the potential pro-cancerous roles of several client proteins that have been described so far to interact with HspB1 (Hsp27) and its close members HspB5 (αB-crystallin) and HspB4 (αA-crystallin).
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Affiliation(s)
- André-Patrick Arrigo
- Apoptosis, Cancer and Development Laboratory, Lyon Cancer Research Center, INSERM U1052-CNRS UMR5286, Claude Bernard University Lyon 1, Lyon 69008, France.
| | - Benjamin Gibert
- Apoptosis, Cancer and Development Laboratory, Lyon Cancer Research Center, INSERM U1052-CNRS UMR5286, Claude Bernard University Lyon 1, Lyon 69008, France.
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65
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Filone CM, Caballero IS, Dower K, Mendillo ML, Cowley GS, Santagata S, Rozelle DK, Yen J, Rubins KH, Hacohen N, Root DE, Hensley LE, Connor J. The master regulator of the cellular stress response (HSF1) is critical for orthopoxvirus infection. PLoS Pathog 2014; 10:e1003904. [PMID: 24516381 PMCID: PMC3916389 DOI: 10.1371/journal.ppat.1003904] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 12/12/2013] [Indexed: 12/17/2022] Open
Abstract
The genus Orthopoxviridae contains a diverse group of human pathogens including monkeypox, smallpox and vaccinia. These viruses are presumed to be less dependent on host functions than other DNA viruses because they have large genomes and replicate in the cytoplasm, but a detailed understanding of the host factors required by orthopoxviruses is lacking. To address this topic, we performed an unbiased, genome-wide pooled RNAi screen targeting over 17,000 human genes to identify the host factors that support orthopoxvirus infection. We used secondary and tertiary assays to validate our screen results. One of the strongest hits was heat shock factor 1 (HSF1), the ancient master regulator of the cytoprotective heat-shock response. In investigating the behavior of HSF1 during vaccinia infection, we found that HSF1 was phosphorylated, translocated to the nucleus, and increased transcription of HSF1 target genes. Activation of HSF1 was supportive for virus replication, as RNAi knockdown and HSF1 small molecule inhibition prevented orthopoxvirus infection. Consistent with its role as a transcriptional activator, inhibition of several HSF1 targets also blocked vaccinia virus replication. These data show that orthopoxviruses co-opt host transcriptional responses for their own benefit, thereby effectively extending their functional genome to include genes residing within the host DNA. The dependence on HSF1 and its chaperone network offers multiple opportunities for antiviral drug development.
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Affiliation(s)
- Claire Marie Filone
- Department of Microbiology, Boston University School of Medicine, Boston, Massachusetts, United States of America
- United States Army Medical Research Institute of Infectious Diseases, Virology Division, Fort Detrick, Maryland, United States of America
- * E-mail:
| | - Ignacio S. Caballero
- Department of Microbiology, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Ken Dower
- Department of Microbiology, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Marc L. Mendillo
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, United States of America
| | - Glenn S. Cowley
- The Broad Institute, Cambridge Massachusetts, United States of America
| | - Sandro Santagata
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, United States of America
| | - Daniel K. Rozelle
- Department of Microbiology, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Judy Yen
- Department of Microbiology, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Kathleen H. Rubins
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, United States of America
| | - Nir Hacohen
- The Broad Institute, Cambridge Massachusetts, United States of America
| | - David E. Root
- The Broad Institute, Cambridge Massachusetts, United States of America
| | - Lisa E. Hensley
- United States Army Medical Research Institute of Infectious Diseases, Virology Division, Fort Detrick, Maryland, United States of America
| | - John Connor
- Department of Microbiology, Boston University School of Medicine, Boston, Massachusetts, United States of America
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Thakrar S, Bavishi A, Radadiya A, Vala H, Parekh S, Bhavsar D, Chaniyara R, Shah A. An Efficient Microwave-Assisted Synthesis and Antimicrobial Activity of Novel 2-Amino 3-Cyano Pyridine Derivatives using Two Reusable Solid Acids as Catalysts. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1641] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shailesh Thakrar
- Department of Chemistry; Saurashtra University; Rajkot 360005 India
| | - Abhay Bavishi
- Department of Chemistry; Saurashtra University; Rajkot 360005 India
| | - Ashish Radadiya
- Department of Chemistry; Saurashtra University; Rajkot 360005 India
| | - Hardevsinh Vala
- Department of Chemistry; Saurashtra University; Rajkot 360005 India
| | - Shrey Parekh
- Department of Chemistry; Saurashtra University; Rajkot 360005 India
| | - Dhairya Bhavsar
- Department of Chemistry; Saurashtra University; Rajkot 360005 India
| | - Ravi Chaniyara
- Department of Chemistry; Saurashtra University; Rajkot 360005 India
| | - Anamik Shah
- Department of Chemistry; Saurashtra University; Rajkot 360005 India
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Fucosylated TGF-β receptors transduces a signal for epithelial-mesenchymal transition in colorectal cancer cells. Br J Cancer 2013; 110:156-63. [PMID: 24253505 PMCID: PMC3887298 DOI: 10.1038/bjc.2013.699] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 09/11/2013] [Accepted: 10/08/2013] [Indexed: 02/06/2023] Open
Abstract
Background: Transforming growth factor-β (TGF-β) is a major inducer of epithelial–mesenchymal transition (EMT) in different cell types. TGF-β-mediated EMT is thought to contribute to tumour cell spread and metastasis. Sialyl Lewis antigens synthesised by fucosyltransferase (FUT) 3 and FUT6 are highly expressed in patients with metastatic colorectal cancer (CRC) and are utilised as tumour markers for cancer detection and evaluation of treatment efficacy. However, the role of FUT3 and FUT6 in augmenting the malignant potential of CRC induced by TGF-β is unclear. Methods: Colorectal cancer cell lines were transfected with siRNAs for FUT3/6 and were examined by cell proliferation, invasion and migration assays. The expression and phosphorylation status of TGF-β downstream molecules were analysed by western blot. Fucosylation of TGF-β receptor (TβR) was examined by lectin blot analysis. Results: Inhibition of FUT3/6 expression by siRNAs suppressed the fucosylation of type I TβR and phosphorylation of the downstream molecules, thereby inhibiting the invasion and migration of CRC cells by EMT. Conclusion: Fucosyltransferase 3/6 has an essential role in cancer cell adhesion to endothelial cells by upregulation of sialyl Lewis antigens and also by enhancement of cancer cell migration through TGF-β-mediated EMT.
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68
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Azarifar D, Khosravi K. Oxidative Aromatization of 1,3,5-Trisubstituted 4,5-Dihydro-1H-Pyrazoles Efficiently by Tetrabromine-1,3,5,7-Tetrazatricyclo[3.3.1.13,7]Decane Complex, Br4-Tatcd, as a Novel Reagent both Under Microwave Irradiation and at Room Temperature. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200900007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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69
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Inaba H, Sugita H, Kuboniwa M, Iwai S, Hamada M, Noda T, Morisaki I, Lamont RJ, Amano A. Porphyromonas gingivalis promotes invasion of oral squamous cell carcinoma through induction of proMMP9 and its activation. Cell Microbiol 2013; 16:131-45. [PMID: 23991831 DOI: 10.1111/cmi.12211] [Citation(s) in RCA: 150] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 08/02/2013] [Accepted: 08/15/2013] [Indexed: 02/06/2023]
Abstract
Recent epidemiological studies have revealed a significant association between periodontitis and oral squamous cell carcinoma (OSCC). Furthermore, matrix metalloproteinase 9 (MMP9) is implicated in the invasion and metastasis of tumour cells. We examined the involvement of Porphyromonas gingivalis, a periodontal pathogen, in OSCC invasion through induced expression of proMMP and its activation. proMMP9 was continuously secreted from carcinoma SAS cells, while P. gingivalis infection increased proenzyme expression and subsequently processed it to active MMP9 in culture supernatant, which enhanced cellular invasion. In contrast, Fusobacterium nucleatum, another periodontal organism, failed to demonstrate such activities. The effects of P. gingivalis were observed with highly invasive cells, but not with the low invasivetype. P. gingivalis also stimulated proteinase-activated receptor 2 (PAR2) and enhanced proMMP9 expression, which promoted cellular invasion. P. gingivalis mutants deficient in gingipain proteases failed to activate MMP9. Infected SAS cells exhibited activation of ERK1/2, p38, and NF-kB, and their inhibitors diminished both proMMP9-overexpression and cellular invasion. Together, our results show that P. gingivalis activates the ERK1/2-Ets1, p38/HSP27, and PAR2/NF-kB pathways to induce proMMP9 expression, after which the proenzyme is activated by gingipains to promote cellular invasion of OSCC cell lines. These findings suggest a novel mechanism of progression and metastasis of OSCC associated with periodontitis.
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Affiliation(s)
- Hiroaki Inaba
- Department of Oral Frontier Biology, Center for Frontier Oral Science, Osaka University Graduate School of Dentistry, Suita, Osaka, 565-0871, Japan
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70
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Gaamoussi I, Fichtali I, Ben Tama A, El Hadrami EM, Armentano D, De Munno G, Julve M, Stiriba SE. Synthesis, characterization and X-ray structure of glycosyl-1,2-isoxazoles and glycosyl-1,2-isoxazolines prepared via 1,3-dipolar cycloaddition. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.05.043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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71
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Synthesis and antioxidant activity of pyrazolyl-oxazolines/thiazolines and isoxazolyl-oxazolines/thiazolines. Med Chem Res 2013. [DOI: 10.1007/s00044-013-0688-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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72
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Copper-doped silica cuprous sulfate (CDSCS) as a highly efficient heterogeneous nano catalyst for synthesis of 3,5-disubstituted isoxazoles. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0307-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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73
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Brazilein suppresses migration and invasion of MDA-MB-231 breast cancer cells. Chem Biol Interact 2013; 204:105-15. [DOI: 10.1016/j.cbi.2013.05.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 04/15/2013] [Accepted: 05/02/2013] [Indexed: 12/21/2022]
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74
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Chandra, Srikantamurthy N, Vishalakshi GJ, Jeyaseelan S, Umesha KB, Mahendra M. 5-Methyl-3-phenyl-isoxazole-4-carb-oxy-lic acid. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o897. [PMID: 23795073 PMCID: PMC3685054 DOI: 10.1107/s1600536813011410] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 04/26/2013] [Indexed: 11/22/2022]
Abstract
In the title compound, C11H9NO3, the phenyl and isoxazole rings form a dihedral angle of 56.64 (8)°. The carboxy group is almost in the same plane as the isoxazole ring with a C—C—C—O torsion angle of −3.3 (2)°. In the crystal, pairs of O—H⋯O hydrogen bonds link the molecules into head-to-head dimers. C—H⋯N hydrogen bonds and π–π stacking interactions between phenyl rings [centroid–centroid distance = 3.9614 (17)Å] link the dimers into a three-dimensional network.
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Affiliation(s)
- Chandra
- Department of Studies in Physics, Manasagangotri, University of Mysore, Mysore 570 006, India
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75
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Samai S, Chanda T, Ila H, Singh MS. One-Pot Three-Component Heteroannulation of β-Oxo Dithioesters, Amines and Hydroxylamine: Regioselective, Facile and Straightforward Entry to 5-Substituted 3-Aminoisoxazoles. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300038] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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76
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Oskay Halacli S, Halacli B, Altundag K. The significance of heat shock proteins in breast cancer therapy. Med Oncol 2013; 30:575. [PMID: 23606238 DOI: 10.1007/s12032-013-0575-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Accepted: 04/04/2013] [Indexed: 12/16/2022]
Abstract
The evalutionary conserved heat shock proteins are involved basically life protecting mechanisms against harmful extracellular effects such as primarily heat shock response. Normally, the expression of these proteins is increased for cellular adaptation to high temperature. This increase is also important in the etiology of breast cancer. Overexpression of heat shock proteins is associated with reduced disease-free survival in breast cancer. However, increased expression of these proteins is related to acquired resistance of traditional chemotherapeutic drugs in use in breast cancer treatment. In this review, we discuss the multiple roles of heatshock proteins in resistance and where we are to overcome this in clinical practice.
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Affiliation(s)
- Sevil Oskay Halacli
- Department of Medical Oncology, Hacettepe University Cancer Institute, Sihhiye, Ankara 06100, Turkey
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77
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Chandra, Raghu K, Srikantamurthy N, Umesha KB, Palani K, Mahendra M. 3-(4-Meth-oxy-phen-yl)-5-methylisoxazole-4-carb-oxy-lic acid. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o388. [PMID: 23476573 PMCID: PMC3588455 DOI: 10.1107/s1600536813004029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 02/09/2013] [Indexed: 11/10/2022]
Abstract
In the title compound, C12H11NO4, the dihedral angle between the benzene and isoxazole rings is 42.52 (8)°. The carb-oxy-lic acid group is close to being coplanar with the isoxazole ring [dihedral angle = 5.3 (2)°]. In the crystal, inversion dimers linked by pairs of O-H⋯O hydrogen bonds generate R2(2)(8) loops.
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Affiliation(s)
- Chandra
- Department of Studies in Physics, Manasagangotri, University of Mysore, Mysore 570 006, India
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78
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Methyl Antcinate A suppresses the population of cancer stem-like cells in MCF7 human breast cancer cell line. Molecules 2013; 18:2539-48. [PMID: 23442930 PMCID: PMC6270214 DOI: 10.3390/molecules18032539] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Revised: 01/22/2013] [Accepted: 02/19/2013] [Indexed: 12/13/2022] Open
Abstract
Methyl antcinate A (MAA) is an ergostane-type triterpenoid extracted from the fruiting bodies of Antrodia camphorate that has been reported to be a cytotoxic agent towards some types of cancer cells, such as oral cancer and liver cancer. Cancer stem cells (CSCs) are a particular population within cancer cells which are responsible for tumor initiation, drug resistance and metastasis and targeting CSCs is an emerging area in cancer therapy. In this study, we examine the effect of MAA on cancer stem-like cells in the MCF7 human breast cancer cell line. Although MAA displayed very low cytotoxic effect towards MCF7 under normal culture conditions, it did show good inhibitory effects on the self-renewal capability which was examined by mammosphere culture including primary and secondary sphere. MAA also inhibited cell migration ability of MCF7 sphere cells. By western blot analysis, MAA was shown to suppress the expression of heat shock protein 27 and increase the expression of IkBα and p53. In conclusion, our data demonstrate that MAA has anti-CSC activity and is worthy of future development of potent anticancer agents.
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79
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Thakrar S, Bavishi A, Radadiya A, Parekh S, Bhavsar D, Vala H, Pandya N, Shah A. Microwave-Assisted Rapid Synthesis of Novel 1,5-Benzodiazepine Derivatives as Potent Antimicrobial Agent. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1065] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shailesh Thakrar
- Department of Chemistry; Saurashtra University; Rajkot; 360005; India
| | - Abhay Bavishi
- Department of Chemistry; Saurashtra University; Rajkot; 360005; India
| | - Ashish Radadiya
- Department of Chemistry; Saurashtra University; Rajkot; 360005; India
| | - Shrey Parekh
- Department of Chemistry; Saurashtra University; Rajkot; 360005; India
| | - Dhairya Bhavsar
- Department of Chemistry; Saurashtra University; Rajkot; 360005; India
| | - Hardevsinh Vala
- Department of Chemistry; Saurashtra University; Rajkot; 360005; India
| | - Nilay Pandya
- Department of Chemistry; Saurashtra University; Rajkot; 360005; India
| | - Anamik Shah
- Department of Chemistry; Saurashtra University; Rajkot; 360005; India
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80
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McConnell JR, McAlpine SR. Heat shock proteins 27, 40, and 70 as combinational and dual therapeutic cancer targets. Bioorg Med Chem Lett 2013; 23:1923-8. [PMID: 23453837 DOI: 10.1016/j.bmcl.2013.02.014] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 01/28/2013] [Accepted: 02/04/2013] [Indexed: 12/23/2022]
Abstract
The heat shock proteins are essential players in the development of cancer and they are prime therapeutic targets. Targeting multiple hsps in dual therapies decreases the likelihood of drug resistance compared to utilizing mono-therapies. Further, employing an hsp inhibitor in combination with another therapy has proven clinically successful. Examples of efficacious strategies include the inhibition of hsp27, which prevents protein aggregation, controlling hsp40's role as an ATPase modulator, and inhibiting hsp70 from acting as a molecular chaperone. While hsp40 therapies are just in the beginning stages, hsp27 and hsp70 therapies have been successfully used in dual inhibition treatments with hsp90 inhibitors and in combinational therapy with antineoplastic drugs. Both dual and combinatorial therapies show encouraging results when used in treating chemotherapeutically resistant diseases.
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Affiliation(s)
- Jeanette R McConnell
- Department of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
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81
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Inhibition of EGF/EGFR activation with naphtho[1,2-b]furan-4,5-dione blocks migration and invasion of MDA-MB-231 cells. Toxicol In Vitro 2013; 27:1-10. [DOI: 10.1016/j.tiv.2012.10.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 07/26/2012] [Accepted: 10/02/2012] [Indexed: 12/30/2022]
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82
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Niu TF, Lv MF, wang L, Yi WB, Cai C. Chemoselective preparation of 1,2,3-triazole–isoxazole bisfunctional derivatives and their application in peptidomimetic synthesis. Org Biomol Chem 2013; 11:1040-8. [DOI: 10.1039/c2ob26990b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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83
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Survival of cancer stem cells under hypoxia and serum depletion via decrease in PP2A activity and activation of p38-MAPKAPK2-Hsp27. PLoS One 2012. [PMID: 23185379 PMCID: PMC3502468 DOI: 10.1371/journal.pone.0049605] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Hypoxia and serum depletion are common features of solid tumors that occur upon antiangiogenesis, irradiation and chemotherapy across a wide variety of malignancies. Here we show that tumor cells expressing CD133, a marker for colorectal cancer initiating or stem cells, are enriched and survive under hypoxia and serum depletion conditions, whereas CD133− cells undergo apoptosis. CD133+ tumor cells increase cancer stem cell and epithelial-mesenchymal transition properties. Moreover, via screening a panel of tyrosine and serine/threonine kinase pathways, we identified Hsp27 is constitutively activated in CD133+ cells rather than CD133− cell under hypoxia and serum depletion conditions. However, there was no difference in Hsp27 activation between CD133+ and CD133− cells under normal growth condition. Hsp27 activation, which was mediated by the p38MAPK-MAPKAPK2-Hsp27 pathway, is required for CD133+ cells to inhibit caspase 9 and 3 cleavage. In addition, inhibition of Hsp27 signaling sensitizes CD133+ cells to hypoxia and serum depletion -induced apoptosis. Moreover, the antiapoptotic pathway is also activated in spheroid culture-enriched CD133+ cancer stem cells from a variety of solid tumor cells including lung, brain and oral cancer, suggesting it is a common pathway activated in cancer stem cells from multiple tumor types. Thus, activation of PP2A or inactivation of the p38MAPK-MAPKAPK2-Hsp27 pathway may develop new strategies for cancer therapy by suppression of their TIC population.
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84
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Li X, Wang Z, Liu J, Tang C, Duan C, Li C. Proteomic analysis of differentially expressed proteins in normal human thyroid cells transfected with PPFP. Endocr Relat Cancer 2012; 19:681-94. [PMID: 22903648 DOI: 10.1530/erc-12-0156] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The fusion gene encoding the thyroid-specific transcription factor PAX8 and peroxisome proliferator-activated receptor γ (PPARγ (PPARG)) (designated as the PPFP gene) is oncogenic and implicated in the development of follicular thyroid carcinoma (FTC). The effects of PPFP transfection on the biological characteristics of Nthy-ori 3-1 cells were studied by MTT assay, colony formation, soft-agar colony formation, and scratch wound-healing assays as well as by flow cytometry. Furthermore, the differentially expressed proteins were analyzed on 2-DE maps and identified by MALDI-TOF-MS. Validation of five identified proteins (prohibitin, galectin-1, cytokeratin 8 (CK8), CK19, and HSP27) was determined by western blot analysis. PPFP not only significantly increased the viability, proliferation, and mobility of the Nthy-ori 3-1 cells but also markedly inhibited cellular apoptosis. Twenty-eight differentially expressed proteins were identified, among which 19 proteins were upregulated and nine proteins were downregulated in Nthy-ori 3-1(PPFP) (Nthy-ori 3-1 cells transfected with PPFP). The western blot results, which were consistent with the proteome analysis results, showed that prohibitin was downregulated, whereas galectin-1, CK8, CK19, and HSP27 were upregulated in Nthy-ori 3-1(PPFP). Our results suggest that PPFP plays an important role in malignant thyroid transformation. Proteomic analysis of the differentially expressed proteins in PPFP-transfected cells provides important information for further study of the carcinogenic mechanism of PPFP in FTCs.
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Affiliation(s)
- Xinying Li
- Key Laboratory of Cancer Proteomics of Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha, People's Republic of China
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85
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Nakajima K, Yanagawa T, Watanabe H, Takagishi K. Hyperthermia reduces migration of osteosarcoma by suppression of autocrine motility factor. Oncol Rep 2012; 28:1953-8. [PMID: 23027359 PMCID: PMC3583516 DOI: 10.3892/or.2012.2066] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Accepted: 08/27/2012] [Indexed: 01/20/2023] Open
Abstract
Autocrine motility factor (AMF) plays an important role in the development of metastasis by regulating tumor cell motility. The expression of AMF is associated with metastasis in malignant musculoskeletal tumors including osteosarcoma. Recent studies indicated that hyperthermia contributes to the improvement of the prognosis of patients with soft tissue sarcomas; however, few reports have evaluated the impact of hyperthermia on tumor cell motility, which is an important factor of metastasis. The purpose of this study was to evaluate the effect of hyperthermia with or without heat shock protein (HSP) inhibitors on the motility and AMF expression in an osteosarcoma cell line. Hyperthermia was carried out at 41°C for 24 h. According to microarray results, HSP90, HSP70 and HSP27 expression was upregulated in osteosarcoma cells under hyperthermia. The intracellular, secreted AMF, mRNA of AMF and cell motility were evaluated by western blotting, ELISA, RT-PCR, wound healing and phagokinetic track assays, respectively. The protein secretion and mRNA levels of AMF and tumor cell motility were significantly decreased by hyperthermia. Of note, the downregulated AMF expression and motility were recovered by the addition of an HSP27 inhibitor. By contrast, the HSP90 and HSP70/72/105 inhibitors had no effect on AMF expression and motility downregulated by hyperthermia. In conclusion, hyperthermia reduced AMF expression and tumor cell motility via HSP27 and may therefore be applied as osteosarcoma treatment.
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Affiliation(s)
- Kosei Nakajima
- Department of Orthopedic Surgery, Graduate School of Medicine, Gunma University, Maebashi, Gunma, Japan
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86
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Zoubeidi A, Gleave M. Small heat shock proteins in cancer therapy and prognosis. Int J Biochem Cell Biol 2012; 44:1646-56. [DOI: 10.1016/j.biocel.2012.04.010] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 02/27/2012] [Accepted: 04/11/2012] [Indexed: 01/05/2023]
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87
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Abstract
PURPOSE The 27-kDa heat shock protein (HSP27) has been implicated in wound healing in multiple tissues. We investigated the expression and localization of phosphorylated HSP27 during epithelial wound healing in the murine cornea. METHODS Corneas of 8- to 10-week-old C57BL6 mice were wounded by epithelial debridement (n = 40). Unwounded corneas served as controls (n = 3). After 3, 7, and 14 days, phosphorylated HSP27 localization in wounded corneas was observed by confocal immunohistochemistry and double immunogold labeling transmission immunoelectron microscopy. Western blot analysis was performed to determine expression levels of phosphorylated HSP27 in scraped epithelia. Phosphorylated HSP27 localization was also separately performed with confocal immunohistochemistry 8 hours after epithelial debridement to investigate the early epithelial wound-healing process. RESULTS In unwounded corneas, phosphorylated HSP27 was localized only to the superficial epithelium. In contrast, phosphorylated HSP27 was localized in the basal and superficial epithelia 3 days after corneal epithelial wounding. After 7 and 14 days, HSP27 localization was similar to that in unwounded controls. Expression levels of phosphorylated HSP27 were greater in wounded corneal epithelia on day 3 than in unwounded controls and on day 14. After 8 hours, phosphorylated HSP27 expression was prominent in the leading edge of migrating corneal epithelium. CONCLUSIONS Constitutive expression of phosphorylated HSP27 is limited to the superficial corneal epithelium in unwounded murine corneas. Changes in HSP27 epithelial distribution and expression levels after corneal epithelial wounding suggest that phosphorylated HSP27 plays a role in early phase of corneal epithelial wound healing.
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88
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Abstract
Traditionally, proteomics is the high-throughput characterization of the global complement of proteins in a biological system using cutting-edge technologies (robotics and mass spectrometry) and bioinformatics tools (Internet-based search engines and databases). As the field of proteomics has matured, a diverse range of strategies have evolved to answer specific problems. Chemical proteomics is one such direction that provides the means to enrich and detect less abundant proteins (the 'hidden' proteome) from complex mixtures of wide dynamic range (the 'deep' proteome). In pharmacology, chemical proteomics has been utilized to determine the specificity of drugs and their analogues, for anticipated known targets, only to discover other proteins that bind and could account for side effects observed in preclinical and clinical trials. As a consequence, chemical proteomics provides a valuable accessory in refinement of second- and third-generation drug design for treatment of many diseases. However, determining definitive affinity capture of proteins by a drug immobilized on soft gel chromatography matrices has highlighted some of the challenges that remain to be addressed. Examples of the different strategies that have emerged using well-established drugs against pharmaceutically important enzymes, such as protein kinases, metalloproteases, PDEs, cytochrome P450s, etc., indicate the potential opportunity to employ chemical proteomics as an early-stage screening approach in the identification of new targets.
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Affiliation(s)
- Chris W Sutton
- Institute of Cancer Therapeutics, University of Bradford, Tumbling Hill Street, Bradford, West Yorkshire, UK.
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89
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Gamapwar SV, Tale NP, Karade NN. Dess–Martin Periodinane–Mediated Oxidative Aromatization of 1,3,5-Trisubstituted Pyrazolines. SYNTHETIC COMMUN 2012. [DOI: 10.1080/00397911.2011.563449] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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90
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Raji Reddy C, Vijaykumar J, Jithender E, Reddy GPK, Grée R. One-Pot Synthesis of 3,5-Disubstituted Isoxazoles from Propargylic Alcohols through PropargylicN-Hydroxylamines. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200628] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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91
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Thakrar S, Bavishi A, Bhavsar D, Parekh S, Vala H, Radadiya A, Parmar M, Savant M, Shah A. Efficient and Rapid Synthesis of Highly Functionalized Novel Symmetric 1,4-Dihydropyridines Using Glacial Acetic Acid as Solvent. SYNTHETIC COMMUN 2012. [DOI: 10.1080/00397911.2011.576448] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Shailesh Thakrar
- a Department of Chemistry , Saurashtra University , Rajkot , India
| | - Abhay Bavishi
- a Department of Chemistry , Saurashtra University , Rajkot , India
| | - Dhairya Bhavsar
- a Department of Chemistry , Saurashtra University , Rajkot , India
| | - Shrey Parekh
- a Department of Chemistry , Saurashtra University , Rajkot , India
| | - Hardev Vala
- a Department of Chemistry , Saurashtra University , Rajkot , India
| | - Ashish Radadiya
- a Department of Chemistry , Saurashtra University , Rajkot , India
| | - Manisha Parmar
- a Department of Chemistry , Saurashtra University , Rajkot , India
| | - Mahesh Savant
- a Department of Chemistry , Saurashtra University , Rajkot , India
| | - Anamik Shah
- a Department of Chemistry , Saurashtra University , Rajkot , India
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92
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Udaya Sri N, Chaitanya K, Prasad M, Veeraiah V, Veeraiah A. Experimental (FT-IR, FT-Raman and UV–Vis spectra) and density functional theory calculations of diethyl 1H-pyrazole-3,5-dicarboxylate. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.03.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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93
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Padmavathi V, Venkatesh BC, Muralikrishna A, Padmaja A. Synthesis and Antioxidant Activity of a New Class of Bis and Tris Heterocycles. Arch Pharm (Weinheim) 2012; 345:745-52. [DOI: 10.1002/ardp.201100361] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Revised: 03/31/2012] [Accepted: 04/12/2012] [Indexed: 11/09/2022]
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94
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Coffman KC, Hartley TP, Dallas JL, Kurth MJ. Isoxazolodihydropyridinones: 1,3-dipolar cycloaddition of nitrile oxides onto 2,4-dioxopiperidines. ACS COMBINATORIAL SCIENCE 2012; 14:280-4. [PMID: 22352295 DOI: 10.1021/co200200u] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Practical and efficient methods have been developed for the diversity-oriented synthesis of isoxazolodihydropyridinones via the 1,3-dipolar cycloaddition of nitrile oxides onto 2,4-dioxopiperidines. A select few of these isoxazolodihydropyridinones were further elaborated with triazoles by copper-catalyzed azide-alkyne cycloaddition reactions. A total of 70 compounds and intermediates were synthesized and analyzed for drug likeness. Sixty-four of these novel compounds were submitted to the NIH Molecular Libraries Small Molecule Repository for high-throughput biological screening.
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Affiliation(s)
- Keith C. Coffman
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616,
United States
| | - Timothy P. Hartley
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616,
United States
| | - Jerry L. Dallas
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616,
United States
| | - Mark J. Kurth
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616,
United States
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Yi X, Zhong B, Smith KM, Geldenhuys WJ, Feng Y, Pink JJ, Dowlati A, Xu Y, Zhou A, Su B. Identification of a Class of Novel Tubulin Inhibitors. J Med Chem 2012; 55:3425-35. [DOI: 10.1021/jm300100d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | | | | | - Werner J. Geldenhuys
- Department
of Pharmaceutical Sciences, Northeast Ohio Medical University, 4209 State Route 44, Rootstown, Ohio 44272, United States
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Lee HK, Yun E, Min JH, Yoon KS, Choung DH, Lee S. Convenient Synthesis of an Isoxazole Compound, KRIBB3, as an Anticancer Agent. SYNTHETIC COMMUN 2012. [DOI: 10.1080/00397911.2010.546551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Hyeong Kyu Lee
- a Biotherapeutics Research Center, KRIBB , Daejeon , Republic of Korea
| | - Eunju Yun
- a Biotherapeutics Research Center, KRIBB , Daejeon , Republic of Korea
| | - Ji Hye Min
- a Biotherapeutics Research Center, KRIBB , Daejeon , Republic of Korea
| | - Kab Seog Yoon
- a Biotherapeutics Research Center, KRIBB , Daejeon , Republic of Korea
| | - Dong-Ho Choung
- a Biotherapeutics Research Center, KRIBB , Daejeon , Republic of Korea
| | - Sangku Lee
- a Biotherapeutics Research Center, KRIBB , Daejeon , Republic of Korea
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97
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Bernard Y, Ribeiro N, Thuaud F, Türkeri G, Dirr R, Boulberdaa M, Nebigil CG, Désaubry L. Flavaglines alleviate doxorubicin cardiotoxicity: implication of Hsp27. PLoS One 2011; 6:e25302. [PMID: 22065986 PMCID: PMC3204970 DOI: 10.1371/journal.pone.0025302] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Accepted: 08/31/2011] [Indexed: 12/31/2022] Open
Abstract
Background Despite its effectiveness in the treatment of various cancers, the use of doxorubicin is limited by a potentially fatal cardiomyopathy. Prevention of this cardiotoxicity remains a critical issue in clinical oncology. We hypothesized that flavaglines, a family of natural compounds that display potent neuroprotective effects, may also alleviate doxorubicin-induced cardiotoxicity. Methodology/Principal Findings Our in vitro data established that a pretreatment with flavaglines significantly increased viability of doxorubicin-injured H9c2 cardiomyocytes as demonstrated by annexin V, TUNEL and active caspase-3 assays. We demonstrated also that phosphorylation of the small heat shock protein Hsp27 is involved in the mechanism by which flavaglines display their cardioprotective effect. Furthermore, knocking-down Hsp27 in H9c2 cardiomyocytes completely reversed this cardioprotection. Administration of our lead compound (FL3) to mice attenuated cardiomyocyte apoptosis and cardiac fibrosis, as reflected by a 50% decrease of mortality. Conclusions/Significance These results suggest a prophylactic potential of flavaglines to prevent doxorubicin-induced cardiac toxicity.
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Affiliation(s)
- Yohann Bernard
- Therapeutic Innovation Laboratory, UMR7200, CNRS/Université de Strasbourg, Illkirch, France
- Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg, FRE 3211, CNRS/Université de Strasbourg, Illkirch, France
| | - Nigel Ribeiro
- Therapeutic Innovation Laboratory, UMR7200, CNRS/Université de Strasbourg, Illkirch, France
| | - Frédéric Thuaud
- Therapeutic Innovation Laboratory, UMR7200, CNRS/Université de Strasbourg, Illkirch, France
| | - Gülen Türkeri
- Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg, FRE 3211, CNRS/Université de Strasbourg, Illkirch, France
| | - Ronan Dirr
- Therapeutic Innovation Laboratory, UMR7200, CNRS/Université de Strasbourg, Illkirch, France
| | - Mounia Boulberdaa
- Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg, FRE 3211, CNRS/Université de Strasbourg, Illkirch, France
| | - Canan G. Nebigil
- Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg, FRE 3211, CNRS/Université de Strasbourg, Illkirch, France
- * E-mail: (CGN); (LD)
| | - Laurent Désaubry
- Therapeutic Innovation Laboratory, UMR7200, CNRS/Université de Strasbourg, Illkirch, France
- * E-mail: (CGN); (LD)
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98
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Wei L, Liu TT, Wang HH, Hong HM, Yu AL, Feng HP, Chang WW. Hsp27 participates in the maintenance of breast cancer stem cells through regulation of epithelial-mesenchymal transition and nuclear factor-κB. Breast Cancer Res 2011; 13:R101. [PMID: 22023707 PMCID: PMC3262214 DOI: 10.1186/bcr3042] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 10/03/2011] [Accepted: 10/24/2011] [Indexed: 12/14/2022] Open
Abstract
Introduction Heat shock proteins (HSPs) are normally induced under environmental stress to serve as chaperones for maintenance of correct protein folding but they are often overexpressed in many cancers, including breast cancer. The expression of Hsp27, an ATP-independent small HSP, is associated with cell migration and drug resistance of breast cancer cells. Breast cancer stem cells (BCSCs) have been identified as a subpopulation of breast cancer cells with markers of CD24-CD44+ or high intracellular aldehyde dehydrogenase activity (ALDH+) and proved to be associated with radiation resistance and metastasis. However, the involvement of Hsp27 in the maintenance of BCSC is largely unknown. Methods Mitogen-activated protein kinase antibody array and Western blot were used to discover the expression of Hsp27 and its phosphorylation in ALDH + BCSCs. To study the involvement of Hsp27 in BCSC biology, siRNA mediated gene silencing and quercetin treatment were used to inhibit Hsp27 expression and the characters of BCSCs, which include ALDH+ population, mammosphere formation and cell migration, were analyzed simultaneously. The tumorigenicity of breast cancer cells after knockdown of Hsp27 was analyzed by xenograftment assay in NOD/SCID mice. The epithelial-mesenchymal transition (EMT) of breast cancer cells was analyzed by wound-healing assay and Western blot of snail, vimentin and E-cadherin expression. The activation of nuclear factor kappa B (NF-κB) was analyzed by luciferase-based reporter assay and nuclear translocation. Results Hsp27 and its phosphorylation were increased in ALDH+ BCSCs in comparison with ALDH- non-BCSCs. Knockdown of Hsp27 in breast cancer cells decreased characters of BCSCs, such as ALDH+ population, mammosphere formation and cell migration. In addition, the in vivo CSC frequency could be diminished in Hsp27 knockdown breast cancer cells. The inhibitory effects could also be observed in cells treated with quercetin, a plant flavonoid inhibitor of Hsp27, and it could be reversed by overexpression of Hsp27. Knockdown of Hsp27 also suppressed EMT signatures, such as decreasing the expression of snail and vimentin and increasing the expression of E-cadherin. Furthermore, knockdown of Hsp27 decreased the nuclear translocation as well as the activity of NF-κB in ALDH + BCSCs, which resulted from increasing expression of IκBα. Restored activation of NF-κB by knockdown of IκBα could reverse the inhibitory effect of Hsp27 siRNA in suppression of ALDH+ cells. Conclusions Our data suggest that Hsp27 regulates the EMT process and NF-κB activity to contribute the maintenance of BCSCs. Targeting Hsp27 may be considered as a novel strategy in breast cancer therapy.
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Affiliation(s)
- Li Wei
- Department of Neurosurgery, Taipei Medical University-Shuang Ho Hospital, Jhongjheng Rd., No.291, New Taipei City, 23561, Taiwan
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Ablajan K, Xiamuxi H. Efficient One-Pot Synthesis of β-Unsaturated Isoxazol-5-ones and Pyrazol-5-ones Under Ultrasonic Irradiation. SYNTHETIC COMMUN 2011. [DOI: 10.1080/00397911.2010.535949] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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100
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Padmaja A, Rajasekhar C, Muralikrishna A, Padmavathi V. Synthesis and antioxidant activity of oxazolyl/thiazolylsulfonylmethyl pyrazoles and isoxazoles. Eur J Med Chem 2011; 46:5034-8. [DOI: 10.1016/j.ejmech.2011.08.010] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Revised: 08/02/2011] [Accepted: 08/05/2011] [Indexed: 10/17/2022]
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