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Dai Z, Jiang P, Zhang P, Wai PT, Bao Y, Gao X, Xia J, Haryono A. Multiwalled carbon nanotubes/castor‐oil–based waterborne polyurethane nanocomposite prepared using a solvent‐free method. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.5151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Zhuding Dai
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education Jiangnan University Wuxi China
- International Joint Research Laboratory for Biomass Conversion Technology, School of Chemical and Material Engineering Jiangnan University Wuxi China
| | - Pingping Jiang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education Jiangnan University Wuxi China
- International Joint Research Laboratory for Biomass Conversion Technology, School of Chemical and Material Engineering Jiangnan University Wuxi China
| | - Pingbo Zhang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education Jiangnan University Wuxi China
- International Joint Research Laboratory for Biomass Conversion Technology, School of Chemical and Material Engineering Jiangnan University Wuxi China
| | - Phyu T. Wai
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education Jiangnan University Wuxi China
- International Joint Research Laboratory for Biomass Conversion Technology, School of Chemical and Material Engineering Jiangnan University Wuxi China
| | - Yanmin Bao
- Jiangsu Caihua Packaging Group Company Kunshan China
| | - Xuewen Gao
- Jiangsu Caihua Packaging Group Company Kunshan China
| | - Jialiang Xia
- Jiangsu Caihua Packaging Group Company Kunshan China
| | - Agus Haryono
- Research Center for Chemistry Indonesian Institute of Sciences Serpong Indonesia
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Natrajan RC, Leonidou A, Brough R, Frankum J, Wai PT, Ng CK, Reis-Filho JS, Lord CJ, Ashworth A. Abstract S4-02: Integrated genomic analyses of members of protein kinase C family identifies subtype specific alterations as novel therapeutic targets. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-s4-02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction
Members of the protein kinase C family are serine/threonine kinases that are involved in proliferation, apoptosis, cell survival and migration, and have been implicated in tumorigenesis. Recently PRKCE has been found to be up-regulated in triple-negative (TN) breast cancers and has been proposed as a target for therapeutic intervention. The aims of this study were to determine i) whether different members of the PKC family are dysregulated and/ or mutated in specific subtypes of breast cancer, ii) to investigate the impact of silencing or overexpression of members of the PKC family in cell line models representative of the different breast cancer subtypes.
Material and methods:
We obtained expression and mutational data from the cancer genome atlas (TCGA) project from 567 and 640 samples subjected to microarray-based gene expression profiling and whole exome sequencing, respectively. Pair-wise SAM analysis of TCGA gene expression data was performed to identify differential expression between subgroups (ER+, HER2+ and TN). Potential driver mutations were identified through the algorithm CHASM. Subtype specific dependencies were identified from the re-analysis of publicly available siRNA kinome-wide screens in a panel of 20 breast cancer cell lines. In vitro assessment of gene overexpression was assessed in MCF10A cells by wound healing scratch assays and 3D growth in Matrigel.
Results
PRKCA, B, I and Q were expressed at significantly higher levels in TN breast cancers. Higher expression of PRKCE was significantly associated with ER-negativity, whereas high PRKCD expression was associated with ER-positivity. Analysis of siRNA kinome-wide screen data resulted in a significant reduction in survival associated with PRKCI and PRKCE in ER-negative cells, PRKCQ in triple-negative cells, and PRKCD in ER-positive cells. Furthermore meta-analysis of published exome and whole genome sequencing data identified potentially activating recurrent kinase domain mutations in PRKCB (0.93%), Q (1.25%) and Z (0.93%), with mutations in PRKCZ being associated with higher gene expression. Forced expression of wild-type PRKCQ and PRKCZ in MCF10A cells resulted in the formation of irregular acini in 3D cell culture and expression of wild-type PRKCZ resulted in increased migration.
Conclusions
Differential expression of members of the protein kinase C family, are associated with different molecular subtypes of breast cancer. Furthermore, we have shown that breast cancer cells are dependent upon expression of these family members in vitro, which are associated with different cellular phenotypes.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr S4-02.
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Affiliation(s)
- RC Natrajan
- The Institute of Cancer Research, London, United Kingdom; Memorial Sloan-Kettering Cancer Center, New York, NY
| | - A Leonidou
- The Institute of Cancer Research, London, United Kingdom; Memorial Sloan-Kettering Cancer Center, New York, NY
| | - R Brough
- The Institute of Cancer Research, London, United Kingdom; Memorial Sloan-Kettering Cancer Center, New York, NY
| | - J Frankum
- The Institute of Cancer Research, London, United Kingdom; Memorial Sloan-Kettering Cancer Center, New York, NY
| | - PT Wai
- The Institute of Cancer Research, London, United Kingdom; Memorial Sloan-Kettering Cancer Center, New York, NY
| | - CK Ng
- The Institute of Cancer Research, London, United Kingdom; Memorial Sloan-Kettering Cancer Center, New York, NY
| | - JS Reis-Filho
- The Institute of Cancer Research, London, United Kingdom; Memorial Sloan-Kettering Cancer Center, New York, NY
| | - CJ Lord
- The Institute of Cancer Research, London, United Kingdom; Memorial Sloan-Kettering Cancer Center, New York, NY
| | - A Ashworth
- The Institute of Cancer Research, London, United Kingdom; Memorial Sloan-Kettering Cancer Center, New York, NY
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