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Raposo TP, Pires I, Prada J, Queiroga FL, Argyle DJ. Exploring new biomarkers in the tumour microenvironment of canine inflammatory mammary tumours. Vet Comp Oncol 2016; 15:655-666. [PMID: 26778136 DOI: 10.1111/vco.12209] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Revised: 10/15/2015] [Accepted: 12/03/2015] [Indexed: 12/20/2022]
Abstract
Human inflammatory breast cancer (IBC) and canine inflammatory mammary cancer (CIMC) are the most aggressive forms of mammary cancer. Current research aims to identify new therapeutic targets. Here, we investigated gene expression levels of biomarkers associated with the inflammatory microenvironment. A total of 32 formalin-fixed paraffin-embedded samples of canine mammary carcinoma (CIMC = 26; non-CIMC = 6) were used and their cDNA subjected to quantitative polymerase chain reaction (qPCR) to establish gene expression levels for mediators commonly implicated in linking carcinogenesis with inflammation. Gene expression differences between CIMC and non-CIMC types were obtained for cyclooxygenase 2 (COX-2) (P = 0.004), synuclein gamma (SNCG) (P = 0.006), tribbles 1 (P = 0.025), vascular endothelial growth factor (VEGF) (P = 0.017) and CSF1R (P = 0.045). Among these biomarkers correlations were found, particularly between SNCG and tribbles 1 (r = 0.512, P = 0.001). The efficient metastasis of CIMC is intimately linked to components in the tumour microenvironment. This study suggests that upregulation and correlation of SNCG and tribbles 1 deserves to be further explored.
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Affiliation(s)
- T P Raposo
- Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal.,Centre for the Study of Animal Sciences, CECA-ICETA, University of Porto, Porto, Portugal
| | - I Pires
- Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal.,Animal and Veterinary Research Centre (CECAV), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
| | - J Prada
- Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal.,Animal and Veterinary Research Centre (CECAV), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
| | - F L Queiroga
- Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal.,Centre for the Study of Animal Sciences, CECA-ICETA, University of Porto, Porto, Portugal.,Centre for Research and Technology of Agro-Environment and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
| | - D J Argyle
- The Royal (Dick) School of Veterinary Studies and The Roslin Institute, University of Edinburgh, Edinburgh, UK
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2
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Zhuang Q, Liu C, Qu L, Shou C. Synuclein-γ promotes migration of MCF7 breast cancer cells by activating extracellular-signal regulated kinase pathway and breaking cell-cell junctions. Mol Med Rep 2015; 12:3795-3800. [PMID: 25997706 DOI: 10.3892/mmr.2015.3799] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Accepted: 04/10/2015] [Indexed: 11/06/2022] Open
Abstract
Synuclein-γ (SNCG), a synuclein family member, promotes migration, invasion and metastasis of tumor cells; however, the mechanism remains unclear. The present study investigated the effect of SNCG on malignant phenotypes of MCF7 cells using cell proliferation analysis, cell migration assays and wound healing assays, and verified its effects on extracellular‑signal regulated kinase (Erk) activation and epithelial to mesenchymal transition‑related markers using western blotting. The results indicated that SNCG increased migration (P<0.05) but not proliferation (P=0.711) of MCF7 cells. It was also demonstrated that SNCG activated the Erk pathway and an inhibitor of Erk signaling significantly counteracted SNCG‑induced migration. Furthermore, it was shown that SNCG downregulated levels of tight junctions‑associated factors E‑cadherin and ZO‑1, while inhibiting the Erk pathway did not affect their levels. In conclusion, SNCG may promote MCF7 cell migration through activating the Erk pathway and breaking cell-cell junctions.
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Affiliation(s)
- Qing Zhuang
- Department of Biochemistry and Molecular Biology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing 100142, P.R. China
| | - Caiyun Liu
- Department of Biochemistry and Molecular Biology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing 100142, P.R. China
| | - Like Qu
- Department of Biochemistry and Molecular Biology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing 100142, P.R. China
| | - Chengchao Shou
- Department of Biochemistry and Molecular Biology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing 100142, P.R. China
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3
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Goh KW, Say YH. γ-Synuclein confers both pro-invasive and doxorubicin-mediated pro-apoptotic properties to the colon adenocarcinoma LS 174T cell line. Tumour Biol 2015; 36:7947-60. [PMID: 25956278 DOI: 10.1007/s13277-015-3455-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 04/10/2015] [Indexed: 11/28/2022] Open
Abstract
γ-synuclein, a neuronal protein of the synuclein family, is involved in carcinogenesis. To investigate its role in colorectal cancer carcinogenesis, we overexpressed γ-synuclein in LS 174T colon adenocarcinoma cell line (termed LS 174T-γsyn). When compared with untransfected/mock transfectants, LS 174T-γsyn had higher mobility in scratch wound assay, tend to scatter more in cell-scattering assay, and had enhanced lamellipodia and filopodia formation in cell-spreading assay. Enhanced adhesion of LS 174T-γsyn to fibronectin and collagen and significantly higher proliferation rate showed that γ-synuclein was able to increase extracellular matrix interaction and promoted proliferation of LS 174T. Higher invasiveness of LS 174T-γsyn was evidenced by enhanced invasion to the bottom of the basement membrane in Boyden chamber assay. However, LS 174T-γsyn were significantly more vulnerable to doxorubicin, vincristine and hydrogen peroxide insults, via apoptotic cell death. LS 174T-γsyn also had reduced anchorage-independent growth as shown by reduced colony formation and reduced anoikis resistance. We found that overexpression of γ-synuclein confers both pro-invasive and doxorubicin-mediated pro-apoptotic properties to LS 174T, where the former was mediated through enhanced cyclic adenosine monophosphate response element binding protein (CREB) phosphorylation, while the latter involved hepatocyte growth factor (HGF) downregulation and subsequent downstream signalling pathways possibly involving extracellular signal-regulated kinases (ERK)1/2, p38α, c-Jun N-terminal kinase (JNK) pan and Signal Transducers and Activators of Transcription (STATs). This unexpected contrasting finding as compared to other similar studies on colon cancer cell lines might be correlated with the degree of tumour advancement from which the cell lines were derived from.
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Affiliation(s)
- Kai-Wey Goh
- Department of Science and Engineering, Centre for Foundation Studies, Universiti Tunku Abdul Rahman (UTAR) Perak Campus, Kampar, Perak, Malaysia
| | - Yee-How Say
- Department of Biomedical Science, Faculty of Science, Universiti Tunku Abdul Rahman (UTAR) Perak Campus, Jalan Universiti, Bandar Barat, 31900, Kampar, Perak, Malaysia.
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4
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De Ricco R, Valensin D, Dell’Acqua S, Casella L, Dorlet P, Faller P, Hureau C. Remote His50 Acts as a Coordination Switch in the High-Affinity N-Terminal Centered Copper(II) Site of α-Synuclein. Inorg Chem 2015; 54:4744-51. [DOI: 10.1021/acs.inorgchem.5b00120] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Riccardo De Ricco
- CNRS, LCC (Laboratoire
de Chimie de Coordination), 205 route
de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
- Université
de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France
- Department
of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Daniela Valensin
- Department
of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Simone Dell’Acqua
- Department
of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Luigi Casella
- Department
of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Pierre Dorlet
- Institute
for Integrative Biology of the Cell (I2BC), Laboratoire Stress Oxydant
et Détoxication, CNRS UMR9198, Université Paris-Saclay, 91191 Gif sur Yvette Cedex, France
| | - Peter Faller
- CNRS, LCC (Laboratoire
de Chimie de Coordination), 205 route
de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
- Université
de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France
| | - Christelle Hureau
- CNRS, LCC (Laboratoire
de Chimie de Coordination), 205 route
de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
- Université
de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France
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5
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De Ricco R, Valensin D, Dell'Acqua S, Casella L, Gaggelli E, Valensin G, Bubacco L, Mangani S. Differences in the binding of copper(I) to α- and β-synuclein. Inorg Chem 2014; 54:265-72. [PMID: 25495902 DOI: 10.1021/ic502407w] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder characterized by the presence of abnormal α-synuclein (αS) deposits in the brain. Alterations in homeostasis and metal-induced oxidative stress may play a crucial role in the progression of αS amyloid assembly and pathogenesis of PD. Contrary to αS, β-synuclein (βS) is not involved in the PD etiology. However, it has been suggested that the βS/αS ratio is altered in PD, indicating that a correct balance of these two proteins is implicated in the inhibition of αS aggregation. αS and βS share similar abilities to coordinate Cu(II). In this study, we investigated and compared the interaction of Cu(I) with the N-terminal portion of βS and αS by means of NMR, circular dichroism, and X-ray absorption spectroscopies. Our data show the importance of M10K mutation, which induces different Cu(I) chemical environments. Coordination modes 3S1O and 2S2O were identified for βS and αS, respectively. These new insights into the bioinorganic chemistry of copper and synuclein proteins are a basis to understand the molecular mechanism by which βS might inhibit αS aggregation.
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Affiliation(s)
- Riccardo De Ricco
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena , Via Aldo Moro 2, Siena, Italy
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