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Fu Q, Liu P, Sun X, Huang S, Han F, Zhang L, Xu Y, Liu T. Ribonucleic acid interference knockdown of IL-6 enhances the efficacy of cisplatin in laryngeal cancer stem cells by down-regulating the IL-6/STAT3/HIF1 pathway. Cancer Cell Int 2017; 17:79. [PMID: 28878571 PMCID: PMC5584337 DOI: 10.1186/s12935-017-0448-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 08/29/2017] [Indexed: 12/26/2022] Open
Abstract
Background Cisplatin has been used in the treatment of many cancers, including laryngeal cancer; however, its efficacy can be reduced due to the development of drug resistance. This study aimed to investigate whether interleukin-6 (IL-6) knockdown may enhance the efficacy of cisplatin in laryngeal cancer stem cells (CSC) and the potential involvement of the signal transducer and activator of transcription 3 (STAT3) and hypoxia-inducible factor 1 (HIF1) in this effect. Methods The ALDH+ and CD44+ CSC in Hep2 human laryngeal squamous cancer cells were identified by the fluorescence-activated cell sorting technique. IL-6, STAT3 and HIF1 mRNA and protein expressions were examined with quantitative real-time polymerase chain reaction and Western blot, respectively. Cell proliferation was measured by MTT assay. Tumorigenicity was measured by a colony formation assay and invasion was determined by a cell invasion assay. Apoptotic cells were counted by flow cytometry. Immunohistochemistry was performed to detect immunoreactive IL-6, STAT3 and HIF1 cells in xenografts. Results The mRNA and protein levels of IL-6, STAT3 and HIF1 were significantly increased in Hep2-CSC as compared with those from Hep2 cells. Application of siRNA-IL-6 to knockdown IL-6 resulted in significantly decreased IL-6, STAT3 and HIF1 mRNA and protein levels. IL-6 knockdown reduced cell proliferation, tumorigenicity and invasion and increased apoptosis within CSC. Enhanced degrees of suppression in these parameters were observed when IL-6 knockdown was combined with cisplatin in these CSC. Results from the xenograft study showed that the combination of IL-6 knockdown and cisplatin further inhibited the growth of xenografts as compared with that obtained in the cisplatin-injected group alone. Immunoreactive IL-6, STAT3 and HIF1 cell numbers were markedly reduced in IL-6 knockdown tumor tissues. IL-6, STAT3 and HIF1 immunoreactive cell counts were further reduced in tissue where IL-6 knockdown was combined with cisplatin treatment as compared with tissue receiving cisplatin alone. Conclusions IL-6 knockdown can increase chemo-drug efficacy of cisplatin, inhibit tumor growth and reduce the potential for tumor recurrence and metastasis in laryngeal cancer. The IL-6/STAT3/HIF1 pathway may represent an important target for investigating therapeutic strategies for the treatment of laryngeal cancer.
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Affiliation(s)
- Qiang Fu
- College of Basic Medicine, Binzhou Medical University, Yantai, 264003 China
| | - Pengruofeng Liu
- Department of Stomatology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003 China
| | - Xiumei Sun
- Department of Otolaryngology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, 264003 China
| | - Shanshan Huang
- Department of Otolaryngology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, 264003 China
| | - Fengchan Han
- College of Basic Medicine, Binzhou Medical University, Yantai, 264003 China
| | - Lili Zhang
- Department of Otolaryngology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, 264003 China
| | - Yannan Xu
- Department of Otolaryngology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, 264003 China
| | - Tingyan Liu
- Department of Otolaryngology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, 264003 China
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202
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Margaryan NV, Seftor EA, Seftor RE, Hendrix MJ. Targeting the Stem Cell Properties of Adult Breast Cancer Cells: Using Combinatorial Strategies to Overcome Drug Resistance. CURRENT MOLECULAR BIOLOGY REPORTS 2017; 3:159-164. [PMID: 29152453 PMCID: PMC5687579 DOI: 10.1007/s40610-017-0067-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
PURPOSE OF REVIEW Cancer is a major public health problem worldwide. In aggressive cancers, which are heterogeneous in nature, there exists a paucity of targetable molecules that can be used to predict outcome and response to therapy in patients, especially those in the high risk category with a propensity to relapse following chemotherapy. This review addresses the challenges pertinent to treating aggressive cancer cells with inherent stem cell properties, with a special focus on triple-negative breast cancer (TNBC). RECENT FINDINGS Plasticity underlies the cancer stem cell (CSC) phenotype in aggressive cancers like TNBC. Progenitors and CSCs implement similar signaling pathways to sustain growth, and the convergence of embryonic and tumorigenic signaling pathways has led to the discovery of novel oncofetal targets, rigorously regulated during normal development, but aberrantly reactivated in aggressive forms of cancer. SUMMARY Translational studies have shown that Nodal, an embryonic morphogen, is reactivated in aggressive cancers, but not in normal tissues, and underlies tumor growth, invasion, metastasis and drug resistance. Front-line therapies do not inhibit Nodal, but when a combinatorial approach is used with an agent such as doxorubicin followed by anti-Nodal antibody therapy, significant decreases in cell growth and viability occur. These findings are of special interest in the development of new therapeutic interventions that target the stem cell properties of cancer cells to overcome drug resistance and metastasis.
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Affiliation(s)
- Naira V. Margaryan
- Department of Biochemistry, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV 26506 USA
- Cancer Institute, West Virginia University, Morgantown, WV 26506 USA
- Department of Biology, Shepherd University, Shepherdstown, WV 25443 USA
| | - Elisabeth A. Seftor
- Department of Biochemistry, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV 26506 USA
- Cancer Institute, West Virginia University, Morgantown, WV 26506 USA
- Department of Biology, Shepherd University, Shepherdstown, WV 25443 USA
| | - Richard E.B. Seftor
- Department of Biochemistry, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV 26506 USA
- Cancer Institute, West Virginia University, Morgantown, WV 26506 USA
- Department of Biology, Shepherd University, Shepherdstown, WV 25443 USA
| | - Mary J.C. Hendrix
- Department of Internal Medicine, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV 26506 USA
- Cancer Institute, West Virginia University, Morgantown, WV 26506 USA
- Department of Biology, Shepherd University, Shepherdstown, WV 25443 USA
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203
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Shen C, Ye B, Hu H, Nie C, Ma Y, Lv J, Wu H, Xiang M. Lentivirus-mediated RNA interference inhibits the tumorigenicity of cluster of differentiation 44 + tumor cells in hypopharyngeal cancer. Oncol Lett 2017; 14:5354-5360. [PMID: 29113169 PMCID: PMC5652143 DOI: 10.3892/ol.2017.6838] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 04/27/2017] [Indexed: 11/16/2022] Open
Abstract
The present study aimed to investigate whether the inhibition of cluster of differentiation (CD)44 expression reduces the tumorigenicity of CD44+ cancer stem cells in hypopharyngeal cancer. To assess this, effective recombinant CD44 short hairpin RNA-expressing lentiviruses were produced. Lentivirus-mediated RNA interference (RNAi) was then used to knockdown CD44 gene expression in the hypopharyngeal cancer FaDu cell line. The viability of FaDu cells in the two control groups and the RNAi group (RNAi-CD44 lentiviral vector) was detected using an MTT assay in vitro. Cells from each group were injected into non-obese diabetic/severe combined immunodeficiency mice and their tumorigenicity determined in vivo. Following lentivirus-mediated RNAi, an MTT assay indicated that cells from the RNAi group exhibited lower viability than the control group. The in vivo tumorigenicity study further revealed a significant difference in tumorigenic rates between the RNAi group and the control group (Fisher's exact test, P<0.05). In addition, tumors in the RNAi group of animals had a longer incubation period than those in the control groups, and the mean tumor volume was also significantly smaller (t=3.47, P<0.05). Pathological study confirmed that all tumors were poorly differentiated squamous cell carcinomas with cellular heterogeneity. The viability of the hypopharyngeal cancer FaDu cells in vitro and their tumorigenicity in vivo were markedly inhibited once CD44 was knocked down. The results of the present study therefore suggest that CD44 may confer tumorigenic characteristics upon CD44+ cancer stem cells in hypopharyngeal cancer.
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Affiliation(s)
- Chenling Shen
- Department of Otolaryngology and Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China
| | - Bin Ye
- Department of Otolaryngology and Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China.,Ear Institute, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China
| | - Haixia Hu
- Department of Otolaryngology and Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China.,Ear Institute, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China
| | - Chen Nie
- Department of Otolaryngology and Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China
| | - Yan Ma
- Department of Otolaryngology and Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China
| | - Jingrong Lv
- Department of Otolaryngology and Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China.,Ear Institute, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China
| | - Hao Wu
- Department of Otolaryngology and Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China.,Ear Institute, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China
| | - Mingliang Xiang
- Department of Otolaryngology and Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China.,Ear Institute, Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China
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204
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Nozaki Y, Tamori S, Inada M, Katayama R, Nakane H, Minamishima O, Onodera Y, Abe M, Shiina S, Tamura K, Kodama D, Sato K, Hara Y, Abe R, Takasawa R, Yoshimori A, Shinomiya N, Tanuma SI, Akimoto K. Correlation between c-Met and ALDH1 contributes to the survival and tumor-sphere formation of ALDH1 positive breast cancer stem cells and predicts poor clinical outcome in breast cancer. Genes Cancer 2017; 8:628-639. [PMID: 28966724 PMCID: PMC5620008 DOI: 10.18632/genesandcancer.148] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
c-Met is a receptor-type tyrosine kinase, which is involved in a wide range of cellular responses such as proliferation, motility, migration and invasion. It has been reported to be overexpressed in various cancers. However, the role of c-Met in breast cancer stem cells (CSCs) still remains unclear. We herein, show that c-Met expression is significantly elevated in Basal-like type of breast cancer in comparison with other subtypes. High expression of c-Met strongly correlated with the expression of two CSC markers, ALDH1A3 and CD133 in breast cancers. In addition, breast cancers at tumor stage III-IV expressing both c-Methigh and ALDH1A3high had poor prognosis. Furthermore, treatment with c-Met inhibitors (Crizotinib, Foretinib, PHA-665752 and Tivantinib) in MDA-MB157 cells with high c-Met protein expression resulted in significant suppression in cell viability, contrary to MDA-MB468 cells with low c-Met protein expression. These c-Met inhibitors also suppressed cell viability and tumor-sphere formation of ALDH1high breast cancer cells with high c-Met expression. These results suggest that c-Met in ALDH1 positive CSCs seems to play an important role in breast cancer repopulation. Therefore, we conclude that c-Met is a potential therapeutic target in ALDH1 positive breast CSCs.
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Affiliation(s)
- Yuka Nozaki
- Department of Medicinal and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan.,Translational Research Center, Research Institute for Science& Technology, Tokyo University of Science, Chiba, Japan
| | - Shoma Tamori
- Department of Medicinal and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan.,Translational Research Center, Research Institute for Science& Technology, Tokyo University of Science, Chiba, Japan
| | - Masahiro Inada
- Department of Medicinal and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Reika Katayama
- Department of Medicinal and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Hiromi Nakane
- Department of Medicinal and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Osamu Minamishima
- Department of Medicinal and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Yuka Onodera
- Department of Medicinal and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Makoto Abe
- Department of Medicinal and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Shota Shiina
- Department of Medicinal and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Kei Tamura
- Department of Medicinal and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Daichi Kodama
- Department of Medicinal and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Keiko Sato
- Department of Information Sciences, Faculty of Science and Technology, Tokyo University of Science, Chiba, Japan
| | - Yasushi Hara
- Research Institute for Biochemical Sciences, Tokyo University of Science, Chiba, Japan
| | - Ryo Abe
- Research Institute for Biochemical Sciences, Tokyo University of Science, Chiba, Japan
| | - Ryoko Takasawa
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | | | - Nariyoshi Shinomiya
- Department of Integrative Physiology and Bio-Nano Medicine, National Defense Medical College, Saitama, Japan
| | - Sei-Ichi Tanuma
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Kazunori Akimoto
- Department of Medicinal and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan.,Translational Research Center, Research Institute for Science& Technology, Tokyo University of Science, Chiba, Japan
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205
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Nilendu P, Kumar A, Kumar A, Pal JK, Sharma NK. Breast cancer stem cells as last soldiers eluding therapeutic burn: A hard nut to crack. Int J Cancer 2017; 142:7-17. [PMID: 28722143 DOI: 10.1002/ijc.30898] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 07/13/2017] [Indexed: 12/26/2022]
Abstract
Cancer stem cells (CSCs) are found in many cancer types, including breast carcinoma. Breast cancer stem cells (BCSCs) are considered as seed of cancer formation and they are associated with metastasis and genotoxic drug resistance. Several studies highlighted the presence of BCSCs in tumor microenvironment and they are accentuated with several carcinoma events including metastasis and resistance to genotoxic drugs and they also rebound after genotoxic burn. Stemness properties of a small population of cells in carcinoma have provided clues regarding the role of tumor microenvironment in tumor pathophysiology. Hence, insights in cancer stem cell biology with respect to molecular signaling, genetics and epigenetic behavior of CSCs have been used to modulate tumor drug resistance due to genotoxic drugs and signaling protein inhibitors. This review summarizes major scientific breakthroughs in understanding the contribution of BCSCs towards tumor's capability to endure destruction inflicted by molecular as well as genotoxic drugs.
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Affiliation(s)
- Pritish Nilendu
- Cancer and Translational Research Lab, Dr. D.Y. Patil Biotechnology & Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Pune, Maharashtra, 411033, India
| | - Ajay Kumar
- Cancer and Translational Research Lab, Dr. D.Y. Patil Biotechnology & Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Pune, Maharashtra, 411033, India
| | - Azad Kumar
- Cancer and Translational Research Lab, Dr. D.Y. Patil Biotechnology & Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Pune, Maharashtra, 411033, India
| | - Jayanta K Pal
- Cancer and Translational Research Lab, Dr. D.Y. Patil Biotechnology & Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Pune, Maharashtra, 411033, India
| | - Nilesh Kumar Sharma
- Cancer and Translational Research Lab, Dr. D.Y. Patil Biotechnology & Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Pune, Maharashtra, 411033, India
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206
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Bai S, Ingram P, Chen YC, Deng N, Pearson A, Niknafs YS, O'Hayer P, Wang Y, Zhang ZY, Boscolo E, Bischoff J, Yoon E, Buckanovich RJ. EGFL6 Regulates the Asymmetric Division, Maintenance, and Metastasis of ALDH+ Ovarian Cancer Cells. Cancer Res 2017; 76:6396-6409. [PMID: 27803106 DOI: 10.1158/0008-5472.can-16-0225] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 07/25/2016] [Indexed: 01/12/2023]
Abstract
Little is known about the factors that regulate the asymmetric division of cancer stem-like cells (CSC). Here, we demonstrate that EGFL6, a stem cell regulatory factor expressed in ovarian tumor cells and vasculature, regulates ALDH+ ovarian CSC. EGFL6 signaled at least in part via the oncoprotein SHP2 with concomitant activation of ERK. EGFL6 signaling promoted the migration and asymmetric division of ALDH+ ovarian CSC. As such, EGFL6 increased not only tumor growth but also metastasis. Silencing of EGFL6 or SHP2 limited numbers of ALDH+ cells and reduced tumor growth, supporting a critical role for EGFL6/SHP2 in ALDH+ cell maintenance. Notably, systemic administration of an EGFL6-neutralizing antibody we generated restricted tumor growth and metastasis, specifically blocking ovarian cancer cell recruitment to the ovary. Together, our results offer a preclinical proof of concept for EGFL6 as a novel therapeutic target for the treatment of ovarian cancer. Cancer Res; 76(21); 6396-409. ©2016 AACR.
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Affiliation(s)
- Shoumei Bai
- Division of Hematology-Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Patrick Ingram
- Department of Electrical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Yu-Chih Chen
- Department of Electrical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Ning Deng
- Division of Hematology-Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Alex Pearson
- Division of Hematology-Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Yashar S Niknafs
- Division of Hematology-Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Patrick O'Hayer
- Division of Hematology-Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Yun Wang
- Division of Hematology-Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Zhong-Yin Zhang
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Elisa Boscolo
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Joyce Bischoff
- Department of Surgery, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Euisik Yoon
- Department of Electrical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Ronald J Buckanovich
- Division of Hematology-Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan. .,Division of Gynecologic-Oncology, Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan
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207
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Kakar SS, Parte S, Carter K, Joshua IG, Worth C, Rameshwar P, Ratajczak MZ. Withaferin A (WFA) inhibits tumor growth and metastasis by targeting ovarian cancer stem cells. Oncotarget 2017; 8:74494-74505. [PMID: 29088802 PMCID: PMC5650357 DOI: 10.18632/oncotarget.20170] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 06/26/2017] [Indexed: 12/19/2022] Open
Abstract
Ovarian cancer is the fifth leading cause of deaths due to cancer among women in the United States. In 2017, 22,440 women are expected to be diagnosed with ovarian cancer and 14,080 women will die with it. Currently used chemotherapies (Cisplatin or platinum/taxane combination) targets cancer cells, but spares cancer stem cells (CSCs), which are responsible for tumor relapse leading to recurrence of cancer. Aldehyde dehydrogenase I (ALDH1) positive cancer stem cells are one of the major populations in ovarian tumor and have been related to tumor progression and metastasis. In our studies, we observed expression of ALDH1 in both ovarian surface epithelium (OSE) and cortex with high levels of expression in OSE in normal ovary and benign (BN) tumor, compared to borderline (BL) and high grade (HG) ovarian tumors. In contrast, high levels of expression of ALDH1 were observed in cortex in BL and HG tumors compared to normal ovary and BN tumor. Withaferin A (WFA) alone or in combination with cisplatin (CIS) significantly inhibited the spheroid formation (tumorigenic potential) of isolated ALDH1 CSCs in vitro and significantly reduced its expression in tumors collected from mice bearing orthotopic ovarian tumor compared to control. Treatment of animals with CIS alone significantly increased the ALDH1 CSC population in tumors, suggesting that CIS targets cancer cells but spares cancer stem cells, which undergo amplification. WFA and CIS combination suppresses the expression of securin an “oncogene”, suggesting that securin may serve as a downstream signaling gene to mediate the antitumor effects of WFA.
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Affiliation(s)
- Sham S Kakar
- Department of Physiology, University of Louisville, Louisville, KY 40202, USA.,James Graham Brown Cancer Center, University of Louisville, Louisville, KY 40202, USA
| | - Seema Parte
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY 40202, USA
| | - Kelsey Carter
- Department of Physiology, University of Louisville, Louisville, KY 40202, USA
| | - Irving G Joshua
- Department of Physiology, University of Louisville, Louisville, KY 40202, USA
| | - Christopher Worth
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY 40202, USA
| | - Pranela Rameshwar
- Department of Medicine, Hematology/Oncology, Rutgers, New Jersey Medical School, Newark, NJ 07103, USA
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208
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MacDonagh L, Gallagher MF, Ffrench B, Gasch C, Breen E, Gray SG, Nicholson S, Leonard N, Ryan R, Young V, O'Leary JJ, Cuffe S, Finn SP, O'Byrne KJ, Barr MP. Targeting the cancer stem cell marker, aldehyde dehydrogenase 1, to circumvent cisplatin resistance in NSCLC. Oncotarget 2017; 8:72544-72563. [PMID: 29069808 PMCID: PMC5641151 DOI: 10.18632/oncotarget.19881] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 07/03/2017] [Indexed: 12/15/2022] Open
Abstract
Non-small cell lung cancer (NSCLC) accounts for a large proportion of cancer deaths and is characterized by low treatment response rates and poor overall prognosis. In the absence of specific treatable mutations, cisplatin-based chemotherapy plays an important role in the treatment of this disease. Unfortunately, the development of resistance has become a major therapeutic challenge in the use of this cytotoxic drug. Elucidating the mechanisms underlying this resistance phenotype, may result in the development of novel agents that enhance sensitivity to cisplatin in lung cancer patients. In this study, targeting the cancer stem cell activity of aldehyde dehydrogenase 1 (ALDH1) was investigated as a strategy to overcome chemoresistance in NSCLC. Tumors from NSCLC patients showed an increase in their profile of pluripotent stemness genes. Cisplatin exposure induced the emergence or expansion of an ALDH1-positive subpopulation in cisplatin sensitive and resistant NSCLC cell lines, respectively, further enhancing cisplatin resistance. Using the Aldefluor assay and FACS analysis, ALDH1 subpopulations were isolated and evaluated in terms of stem cell characteristics. Only ALDH1-positive cells exhibited asymmetric division, cisplatin resistance and increased expression of stem cell factors in vitro. Xenograft studies in NOD/SCID mice demonstrated efficient tumorigenesis from low cell numbers of ALDH1-positive and ALDH1-negative subpopulations. Targeting ALDH1 with Diethylaminobenzaldehyde (DEAB) and Disulfiram, significantly re-sensitized resistant lung cancer cells to the cytotoxic effects of cisplatin. Our data demonstrate the existence of a lung CSC population and suggest a role for targeting ALDH1 as a potential therapeutic strategy in re-sensitizing NSCLC cells to the cytotoxic effects of cisplatin.
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Affiliation(s)
- Lauren MacDonagh
- Thoracic Oncology Research Group, School of Clinical Medicine, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, St. James's Hospital & Trinity College, Dublin, Ireland
| | - Michael F Gallagher
- Histopathology Department, Trinity College Dublin, Sir Patrick Dun Laboratories & Central Pathology Laboratory, St. James's Hospital, Pathology Research Laboratory, Coombe Women and Infant's University Hospital, Dublin, Ireland
| | - Brendan Ffrench
- Histopathology Department, Trinity College Dublin, Sir Patrick Dun Laboratories & Central Pathology Laboratory, St. James's Hospital, Pathology Research Laboratory, Coombe Women and Infant's University Hospital, Dublin, Ireland
| | - Claudia Gasch
- Histopathology Department, Trinity College Dublin, Sir Patrick Dun Laboratories & Central Pathology Laboratory, St. James's Hospital, Pathology Research Laboratory, Coombe Women and Infant's University Hospital, Dublin, Ireland
| | - Eamon Breen
- Flow Cytometry Facility, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, St. James's Hospital & Trinity College, Dublin, Ireland
| | - Steven G Gray
- Thoracic Oncology Research Group, School of Clinical Medicine, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, St. James's Hospital & Trinity College, Dublin, Ireland
| | | | - Niamh Leonard
- Histopathology Department, St. James's Hospital, Dublin, Ireland
| | - Ronan Ryan
- Department of Cardiothoracic Surgery, St. James's Hospital, Dublin, Ireland
| | - Vincent Young
- Department of Cardiothoracic Surgery, St. James's Hospital, Dublin, Ireland
| | - John J O'Leary
- Histopathology Department, Trinity College Dublin, Sir Patrick Dun Laboratories & Central Pathology Laboratory, St. James's Hospital, Pathology Research Laboratory, Coombe Women and Infant's University Hospital, Dublin, Ireland
| | - Sinead Cuffe
- Thoracic Oncology Research Group, School of Clinical Medicine, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, St. James's Hospital & Trinity College, Dublin, Ireland
| | - Stephen P Finn
- Thoracic Oncology Research Group, School of Clinical Medicine, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, St. James's Hospital & Trinity College, Dublin, Ireland.,Histopathology Department, St. James's Hospital, Dublin, Ireland
| | - Kenneth J O'Byrne
- Thoracic Oncology Research Group, School of Clinical Medicine, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, St. James's Hospital & Trinity College, Dublin, Ireland.,Cancer & Ageing Research Program, Queensland University of Technology, Brisbane, Australia
| | - Martin P Barr
- Thoracic Oncology Research Group, School of Clinical Medicine, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, St. James's Hospital & Trinity College, Dublin, Ireland
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209
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He J, Xiong L, Li Q, Lin L, Miao X, Yan S, Hong Z, Yang L, Wen Y, Deng X. 3D modeling of cancer stem cell niche. Oncotarget 2017; 9:1326-1345. [PMID: 29416698 PMCID: PMC5787442 DOI: 10.18632/oncotarget.19847] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 07/25/2017] [Indexed: 02/06/2023] Open
Abstract
Cancer stem cells reside in a distinct microenvironment called niche. The reciprocal interactions between cancer stem cells and niche contribute to the maintenance and enrichment of cancer stem cells. In order to simulate the interactions between cancer stem cells and niche, three-dimensional models have been developed. These in vitro culture systems recapitulate the spatial dimension, cellular heterogeneity, and the molecular networks of the tumor microenvironment and show great promise in elucidating the pathophysiology of cancer stem cells and designing more clinically relavant treatment modalites.
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Affiliation(s)
- Jun He
- Department of General Surgery, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Li Xiong
- Department of General Surgery, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qinglong Li
- Department of General Surgery, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Liangwu Lin
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan, China
| | - Xiongying Miao
- Department of General Surgery, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Shichao Yan
- Department of Pathology, Hunan Normal University Medical College, Changsha, Hunan, China
| | - Zhangyong Hong
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin, China
| | - Leping Yang
- Department of General Surgery, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yu Wen
- Department of General Surgery, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiyun Deng
- Department of Pathology, Hunan Normal University Medical College, Changsha, Hunan, China
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210
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Suarez CD, Wu J, Badve SS, Sparano JA, Kaliney W, Littlepage LE. The AKT inhibitor triciribine in combination with paclitaxel has order-specific efficacy against Zfp217-induced breast cancer chemoresistance. Oncotarget 2017; 8:108534-108547. [PMID: 29312549 PMCID: PMC5752462 DOI: 10.18632/oncotarget.19308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Accepted: 02/02/2017] [Indexed: 12/17/2022] Open
Abstract
We previously identified the transcription factor ZNF217 (human) / Zfp217 (mouse) as an oncogene and prognostic indicator of reduced survival, increased metastasis, and reduced response to therapy in breast cancer patients. Here we investigated the role of Zfp217 in chemotherapy resistance. Preclinical animal models of Zfp217 overexpression were treated with a combination therapy of the microtubule inhibitor epothilone B, doxorubicin (Adriamycin), and cyclophosphamide (EAC). Tumors overexpressing Zfp217 increased their tumor burden compared to control tumors after treatment and accumulated a mammary gland progenitor cell population (K8+K14+). To overcome this chemoresistance after ZNF217 overexpression, we treated tumors ± Zfp217 overexpression with paclitaxel and triciribine, a nucleoside analog and AKT inhibitor that kills cells that overexpress ZNF217. Treatment order critically impacted the efficacy of the therapy. Combination treatment of triciribine followed by paclitaxel (TCN→PAC) inhibited tumor burden and increased survival in tumors that overexpressed Zfp217, whereas single agent or combination treatment in the reverse order (PAC→TCN) did not improve response. Analysis of these tumors and patient-derived tumor xenograft tumors treated with the same therapies suggested that Zfp217 overexpression in tumors contributes both to decreased microvessel density and vessel maturity, while TCN→PAC tumors overexpressing Zfp217 showed improved vessel maturity.
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Affiliation(s)
- Christopher D Suarez
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA.,Harper Cancer Research Institute, South Bend, IN 46617, USA
| | - Junmin Wu
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA.,Harper Cancer Research Institute, South Bend, IN 46617, USA
| | - Sunil S Badve
- Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Joseph A Sparano
- Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | | | - Laurie E Littlepage
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA.,Harper Cancer Research Institute, South Bend, IN 46617, USA
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211
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Wang X, Reyes ME, Zhang D, Funakoshi Y, Trape AP, Gong Y, Kogawa T, Eckhardt BL, Masuda H, Pirman DA, Yang P, Reuben JM, Woodward WA, Bartholomeusz C, Hortobagyi GN, Tripathy D, Ueno NT. EGFR signaling promotes inflammation and cancer stem-like activity in inflammatory breast cancer. Oncotarget 2017; 8:67904-67917. [PMID: 28978083 PMCID: PMC5620223 DOI: 10.18632/oncotarget.18958] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 06/17/2017] [Indexed: 12/17/2022] Open
Abstract
Inflammatory breast cancer (IBC) is the most lethal and aggressive type of breast cancer, with a strong proclivity to metastasize, and IBC-specific targeted therapies have not yet been developed. Epidermal growth factor receptor (EGFR) has emerged as an important therapeutic target in IBC. However, the mechanism behind the therapeutic effect of EGFR targeted therapy is not well defined. Here, we report that EGFR regulates the IBC cell population that expresses cancer stem-like cell (CSC) markers through COX-2, a key mediator of inflammation whose expression correlates with worse outcome in IBC. The COX-2 pathway promoted IBC cell migration and invasion and the CSC marker-bearing population in vitro, and the inhibition of this pathway reduced IBC tumor growth in vivo. Mechanistically, we identified Nodal, a member of the TGFβ superfamily, as a potential driver of COX-2-regulated invasive capacity and the CSC phenotype of IBC cells. Our data indicate that the EGFR pathway regulates the expression of COX-2, which in turn regulates the expression of Nodal and the activation of Nodal signaling. Together, our findings demonstrate a novel connection between the EGFR/COX-2/Nodal signaling axis and CSC regulation in IBC, which has potential implications for new combination approaches with EGFR targeted therapy for patients with IBC.
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Affiliation(s)
- Xiaoping Wang
- Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Section of Translational Breast Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Monica E Reyes
- Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Section of Translational Breast Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Dongwei Zhang
- Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Section of Translational Breast Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Yohei Funakoshi
- Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Section of Translational Breast Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Adriana P Trape
- Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Section of Translational Breast Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Yun Gong
- Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Takahiro Kogawa
- Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Section of Translational Breast Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Bedrich L Eckhardt
- Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Section of Translational Breast Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Hiroko Masuda
- Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Section of Translational Breast Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - David A Pirman
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Peiying Yang
- Department of General Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - James M Reuben
- Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Wendy A Woodward
- Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Chandra Bartholomeusz
- Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Section of Translational Breast Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Gabriel N Hortobagyi
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Debu Tripathy
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Naoto T Ueno
- Morgan Welch Inflammatory Breast Cancer Research Program and Clinic, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Section of Translational Breast Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.,Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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212
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Taylor WF, Jabbarzadeh E. The use of natural products to target cancer stem cells. Am J Cancer Res 2017; 7:1588-1605. [PMID: 28744407 PMCID: PMC5523038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 06/27/2017] [Indexed: 06/07/2023] Open
Abstract
The cancer stem cell hypothesis has been used to explain many cancer complications resulting in poor patient outcomes including induced drug resistance, metastases to distant organs, and tumor recurrence. While the validity of the cancer stem cell model continues to be the cause of much scientific debate, a number of putative cancer stem cell markers have been identified making studies concerning the targeting of cancer stem cells possible. In this review, a number of identifying properties of cancer stem cells have been outlined including properties contributing to the drug resistance and metastatic potential commonly observed in supposed cancer stem cells. Due to cancer stem cells' numerous survival mechanisms, the diversity of cancer stem cell markers between cancer types and tissues, and the prevalence of cancer stem cell markers among healthy stem and somatic cells, it is likely that currently utilized treatments will continue to fail to eradicate cancer stem cells. The successful treatment of cancer stem cells will rely upon the development of anti-neoplastic drugs capable of influencing many cellular mechanisms simultaneously in order to prevent the survival of this evasive subpopulation. Natural compounds represent a historically rich source of novel, biologically active compounds which are able to interact with a large number of cellular targets while limiting the painful side-effects commonly associated with cancer treatment. A brief review of select natural products that have been demonstrated to diminish the clinically devastating properties of cancer stem cells or to induce cancer stem cell death is also presented.
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Affiliation(s)
- Wesley F Taylor
- Department of Chemical Engineering, University of South CarolinaColumbia 29208, SC, USA
| | - Ehsan Jabbarzadeh
- Department of Chemical Engineering, University of South CarolinaColumbia 29208, SC, USA
- Biomedical Engineering Program, University of South CarolinaColumbia 29208, SC, USA
- Department of Orthopedic Surgery, School of Medicine, University of South CarolinaColumbia 29209, SC, USA
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213
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1-(Benzenesulfonyl)-1,5-dihydro-4,1-benzoxazepine as a new scaffold for the design of antitumor compounds. Future Med Chem 2017; 9:1129-1140. [DOI: 10.4155/fmc-2017-0006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Aim: Bozepinib is a potent and selective anticancer compound which chemical structure is made up of a benzofused seven-membered ring and a purine moiety. We previously demonstrated that the purine fragment does not exert antiproliferative effect per se. Methodology: A series of 1-(benzenesulfonyl)-4,1-benzoxazepine derivatives were synthesized in order to study the influence of the benzofused seven-membered ring in the biological activity of bozepinib by means of antiproliferative, cell cycle and apoptosis studies. Results & conclusion: Our results show that the methyleneoxy enamine sulfonyl function is essential in the antitumor activity of the structures and thus, it is a scaffold suitable for further modification with a view to obtain more potent antitumor compounds.
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214
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Momtazi-borojeni AA, Abdollahi E, Ghasemi F, Caraglia M, Sahebkar A. The novel role of pyrvinium in cancer therapy. J Cell Physiol 2017; 233:2871-2881. [DOI: 10.1002/jcp.26006] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 05/11/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Amir A. Momtazi-borojeni
- Nanotechnology Research Center; Bu-Ali Research Institute; Mashhad University of Medical Sciences; Mashhad Iran
- Faculty of Medicine; Department of Medical Biotechnology; Student Research Committee; Mashhad University of Medical Sciences; Mashhad Iran
| | - Elham Abdollahi
- Department of Medical Immunology; School of Medicine; Mashhad University of Medical Sciences; Mashhad Iran
- Student Research Committee; Mashhad University of Medical Sciences; Mashhad Iran
| | - Faezeh Ghasemi
- Faculty of Medicine; Department of Medical Biotechnology; Arak University of Medical Sciences; Arak Iran
| | - Michele Caraglia
- Department of Biochemistry; Biophysics and General Pathology; University of Campania “L. Vanvitelli”; Via L. De Crecchio; Naples Italy
| | - Amirhossein Sahebkar
- Biotechnology Research Center; Mashhad University of Medical Sciences; Mashhad Iran
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215
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Caria P, Pillai R, Dettori T, Frau DV, Zavattari P, Riva G, Romano G, Pani F, Bentivegna A, Giovannoni R, Pagni F, Sogos V, Vanni R. Thyrospheres from B-CPAP Cell Line with BRAF and TERT Promoter Mutations have Different Functional and Molecular Features than Parental Cells. J Cancer 2017; 8:1629-1639. [PMID: 28775782 PMCID: PMC5535718 DOI: 10.7150/jca.18855] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 03/29/2017] [Indexed: 12/14/2022] Open
Abstract
Human thyroid cancer derived cell lines are widely used to study the mechanisms involved in thyroid carcinogenesis. However, there is limited availability of non-cross-contaminated cancer cell lines derived from papillary thyroid carcinoma (PTC), and the B-CPAP cell line is one of the few such lines. B-CPAP cells have been genetically and cytogenetically well-characterized, but details of their stemness features remain uncertain. Considering that this cell line is extensively used for in vitro studies on thyroid tumorigenesis, we broaden its functional and molecular profiles as well as the tumorigenic capacity. We used functional assays (sphere-forming capacity and efficiency), assessed self-renewal and propagation efficiency and tested in vivo tumorigenicity in Hsd:Athymic Nude-Foxn1nu mice. Expression of markers of stemness, differentiation, and epithelial-mesenchymal transition were estimated at RNA and protein levels in adherent parental cells and sphere-forming cells. Functional aspects and stemness features were compared with normal thyrocytes. Protein expression of xenograft tumors was evaluated by immunohistochemistry. B-CPAP sphere-forming cells were able to form thyrospheres theoretically indefinitely in an appropriate serum-free medium, reverting to the adherent parental cell phenotype when cultured in differentiation medium. Different expression of ALDH1-A1 and CD44 stemness markers and TTF-1 and CK19 differentiation markers allowed discrimination between isolated sphere-forming cells and adherent parental cells, indicating that sphere-forming cells retained stem-like features. In keeping with these observations, tumorigenicity assays confirmed that, relative to parental adherent cells, thyrospheres had enhanced capacity to initiate xenograft tumors. Thyrospheres from normal cell line retained very low functional capacity, as well as different stemness markers expression compared to tumor thyrospheres. Our findings may constitute a useful background to develop an in vitro model for assessing the origin and progression of papillary thyroid carcinoma bearing BRAFV600E and TERT promoter mutations.
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Affiliation(s)
- Paola Caria
- Department of Biomedical Sciences, University of Cagliari, Italy
| | - Rita Pillai
- Department of Biomedical Sciences, University of Cagliari, Italy
| | - Tinuccia Dettori
- Department of Biomedical Sciences, University of Cagliari, Italy
| | | | | | - Gabriele Riva
- School of Medicine and Surgery, University of Milano-Bicocca, Italy
| | - Gabriele Romano
- School of Medicine and Surgery, University of Milano-Bicocca, Italy
| | - Fabiana Pani
- Department of Medical Sciences, University of Cagliari, Italy
| | | | | | - Fabio Pagni
- School of Medicine and Surgery, University of Milano-Bicocca, Italy
| | - Valeria Sogos
- Department of Biomedical Sciences, University of Cagliari, Italy
| | - Roberta Vanni
- Department of Biomedical Sciences, University of Cagliari, Italy
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216
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Gonçalves A, Monneur A, Viens P, Bertucci F. The use of systemic therapies to prevent progression of inflammatory breast cancer: which targeted therapies to add on cytotoxic combinations? Expert Rev Anticancer Ther 2017; 17:593-606. [PMID: 28506194 DOI: 10.1080/14737140.2017.1330655] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
INTRODUCTION Inflammatory breast cancer is a rare but frequently fatal disease, essentially because of its high ability to develop distant metastases. Even though the prognosis of IBC was significantly improved by multimodal management, including the systematic use of cytotoxic-based induction, the prognosis remains largely dismal. Areas covered: This review presents the main achievements in the systemic treatment of IBC during the past 30 years. It focuses more specifically on recent results obtained with targeted therapies, including anti-HER2 and anti-angiogenic agents. Novel approaches under investigation are presented. Expert commentary: Current management of IBC is subtype-specific and the largest benefit has been achieved in HER2-positive disease. The identification of breakthrough therapeutic advances is eagerly awaited and will require the development of IBC-specific clinical trials. Future clinical investigations should not only aim to increase the pathological response rate but also to eradicate distant metastases, which ultimately lead to patient death.
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Affiliation(s)
- Anthony Gonçalves
- a Department of Medical Oncology, Institut Paoli-Calmettes, Aix Marseille Univ , CNRS U7258, INSERM U1068, CRCM , Marseille , France
| | - Audrey Monneur
- a Department of Medical Oncology, Institut Paoli-Calmettes, Aix Marseille Univ , CNRS U7258, INSERM U1068, CRCM , Marseille , France
| | - Patrice Viens
- a Department of Medical Oncology, Institut Paoli-Calmettes, Aix Marseille Univ , CNRS U7258, INSERM U1068, CRCM , Marseille , France
| | - François Bertucci
- a Department of Medical Oncology, Institut Paoli-Calmettes, Aix Marseille Univ , CNRS U7258, INSERM U1068, CRCM , Marseille , France
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217
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Mishra AK, Parish CR, Wong ML, Licinio J, Blackburn AC. Leptin signals via TGFB1 to promote metastatic potential and stemness in breast cancer. PLoS One 2017; 12:e0178454. [PMID: 28542577 PMCID: PMC5444832 DOI: 10.1371/journal.pone.0178454] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 05/12/2017] [Indexed: 01/05/2023] Open
Abstract
Epidemiological studies have shown obesity to be linked with poorer outcomes in breast cancer patients. The molecular mechanisms responsible for the increased risk of invasive/metastatic disease with obesity are complex, but may include elevated levels of adipokines such as leptin. Using physiological levels of leptin found in obesity in a novel chronic in vitro treatment model (≤200 ng/ml for 14 days), we confirmed the occurrence of leptin-mediated changes in growth, apoptosis and metastatic behavior, and gene expression changes representing epithelial-to-mesenchymal transition (EMT) and a cancer stem cell (CSC) like phenotype in breast epithelial and cancer cell lines (MCF10A, MCF10AT1, MCF7 and MDA-MB-231). Further, we have discovered that these effects were accompanied by increased expression of TGFB1, and could be significantly reduced by co-treatment with neutralizing antibody against TGFB1, indicating that the induction of these characteristics was mediated via TGFB1. Occurring in both MCF7 and MCF10AT1 cells, it suggests these actions of leptin to be independent of estrogen receptor status. By linking leptin signalling to the established TGFB1 pathway of metastasis / EMT, this study gives a direct mechanism by which leptin can contribute to the poorer outcomes of obese cancer patients. Inhibitors of TGFB1 are in currently in phase III clinical trials in other malignancies, thus identifying the connection between leptin and TGFB1 will open new therapeutic opportunities for improving outcomes for obese breast cancer patients.
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Affiliation(s)
- Ameet K. Mishra
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT Australia
| | - Christopher R. Parish
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT Australia
| | - Ma-Li Wong
- Mind and Brain Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- School of Medicine, Flinders University, Bedford Park, Adelaide, SA, Australia
| | - Julio Licinio
- Mind and Brain Theme, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
- School of Medicine, Flinders University, Bedford Park, Adelaide, SA, Australia
| | - Anneke C. Blackburn
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT Australia
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218
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Amey CL, Karnoub AE. Targeting Cancer Stem Cells-A Renewed Therapeutic Paradigm. ONCOLOGY & HEMATOLOGY REVIEW 2017; 13:45-55. [PMID: 33959299 PMCID: PMC8098671 DOI: 10.17925/ohr.2017.13.01.45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Metastasis is often accompanied by radio- and chemotherapeutic resistance to anticancer treatments and is the major cause of death in cancer patients. Better understanding of how cancer cells circumvent therapeutic insults and how disseminated cancer clones generate life-threatening metastases would therefore be paramount to the development of effective therapeutic approaches for clinical management of malignant disease. Mounting reports over the past two decades have provided evidence for the existence of a minor population of highly malignant cells within liquid and solid tumors, which are capable of self-renewing and of regenerating secondary growths with the heterogeneity of the primary tumors from which they derive. These cells, called tumor-initiating cells or cancer stem cells (CSCs) exhibit increased resistance to standard radio- and chemotherapies and appear to have mechanisms that enable them to evade immune surveillance. CSCs are therefore considered to be responsible for systemic residual disease after cancer therapy, as well as for disease relapse. How CSCs develop, the nature of the interactions they establish with their microenvironment, their phenotypic and functional characteristics, as well as their molecular dependencies have all taken center stage in cancer therapy. Indeed, improved understanding of CSC biology is critical to the development of important CSC-based anti-neoplastic approaches that have the potential to radically improve cancer management. Here, we summarize some of the most pertinent elements regarding CSC development and properties, and highlight some of the clinical modalities in current development as anti-CSC therapeutics.
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Affiliation(s)
| | - Antoine E Karnoub
- Department of Pathology, Beth Israel Deaconess Cancer Center and Harvard Medical School, Boston, Massachusetts, US; Harvard Stem Cell Institute, Cambridge, Massachusetts, US; Broad Institute of MIT and Harvard, Cambridge, Massachusetts, US
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219
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Manupati K, Dhoke NR, Debnath T, Yeeravalli R, Guguloth K, Saeidpour S, De UC, Debnath S, Das A. Inhibiting epidermal growth factor receptor signalling potentiates mesenchymal–epithelial transition of breast cancer stem cells and their responsiveness to anticancer drugs. FEBS J 2017; 284:1830-1854. [DOI: 10.1111/febs.14084] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 03/27/2017] [Accepted: 04/07/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Kanakaraju Manupati
- Centre for Chemical Biology CSIR‐Indian Institute of Chemical Technology Hyderabad India
- Academy of Scientific & Innovative Research New Delhi India
| | - Neha R. Dhoke
- Centre for Chemical Biology CSIR‐Indian Institute of Chemical Technology Hyderabad India
- Academy of Scientific & Innovative Research New Delhi India
| | - Tanusree Debnath
- Department of Chemistry Maharaja Bir Bikram College Agartala Tripura India
| | - Ragini Yeeravalli
- Centre for Chemical Biology CSIR‐Indian Institute of Chemical Technology Hyderabad India
- Academy of Scientific & Innovative Research New Delhi India
| | - Kalpana Guguloth
- Centre for Chemical Biology CSIR‐Indian Institute of Chemical Technology Hyderabad India
| | - Shahrzad Saeidpour
- Centre for Chemical Biology CSIR‐Indian Institute of Chemical Technology Hyderabad India
| | - Utpal Chandra De
- Department of Chemistry Tripura University Agartala Tripura India
| | - Sudhan Debnath
- Department of Chemistry Maharaja Bir Bikram College Agartala Tripura India
| | - Amitava Das
- Centre for Chemical Biology CSIR‐Indian Institute of Chemical Technology Hyderabad India
- Academy of Scientific & Innovative Research New Delhi India
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220
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VEGFA links self-renewal and metastasis by inducing Sox2 to repress miR-452, driving Slug. Oncogene 2017; 36:5199-5211. [PMID: 28504716 PMCID: PMC5596211 DOI: 10.1038/onc.2017.4] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 12/21/2016] [Accepted: 12/23/2016] [Indexed: 02/08/2023]
Abstract
Cancer stem cells (CSC) appear to have increased metastatic potential, but mechanisms underlying this are poorly defined. Here we show that VEGFA induction of Sox2 promotes EMT and tumor metastasis. In breast lines and primary cancer culture, VEGFA rapidly upregulates SOX2 expression, leading to SNAI2 induction, EMT, increased invasion and metastasis. We show Sox2 downregulates miR-452, which acts as a novel metastasis suppressor to directly target the SNAI2 3′-untranslated region (3′-UTR). VEGFA stimulates Sox2- and Slug-dependent cell invasion. VEGFA increases lung metastasis in vivo, and this is abrogated by miR-452 overexpression. Furthermore, SNAI2 transduction rescues metastasis suppression by miR-452. Thus, in addition to its angiogenic action, VEGFA upregulates Sox2 to drive stem cell expansion, together with miR-452 loss and Slug upregulation, providing a novel mechanism whereby cancer stem cells acquire metastatic potential. Prior work showed EMT transcription factor overexpression upregulates CSC. Present work indicates that stemness and metastasis are a two-way street: Sox2, a major mediator of CSC self-renewal, also governs the metastatic process.
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221
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NMI inhibits cancer stem cell traits by downregulating hTERT in breast cancer. Cell Death Dis 2017; 8:e2783. [PMID: 28492540 PMCID: PMC5520720 DOI: 10.1038/cddis.2017.200] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 03/24/2017] [Accepted: 03/27/2017] [Indexed: 12/21/2022]
Abstract
N-myc and STAT interactor (NMI) has been proved to bind to different transcription factors to regulate a variety of signaling mechanisms including DNA damage, cell cycle and epithelial–mesenchymal transition. However, the role of NMI in the regulation of cancer stem cells (CSCs) remains poorly understood. In this study, we investigated the regulation of NMI on CSCs traits in breast cancer and uncovered the underlying molecular mechanisms. We found that NMI was lowly expressed in breast cancer stem cells (BCSCs)-enriched populations. Knockdown of NMI promoted CSCs traits while its overexpression inhibited CSCs traits, including the expression of CSC-related markers, the number of CD44+CD24− cell populations and the ability of mammospheres formation. We also found that NMI-mediated regulation of BCSCs traits was at least partially realized through the modulation of hTERT signaling. NMI knockdown upregulated hTERT expression while its overexpression downregulated hTERT in breast cancer cells, and the changes in CSCs traits and cell invasion ability mediated by NMI were rescued by hTERT. The in vivo study also validated that NMI knockdown promoted breast cancer growth by upregulating hTERT signaling in a mouse model. Moreover, further analyses for the clinical samples demonstrated that NMI expression was negatively correlated with hTERT expression and the low NMI/high hTERT expression was associated with the worse status of clinical TNM stages in breast cancer patients. Furthermore, we demonstrated that the interaction of YY1 protein with NMI and its involvement in NMI-mediated transcriptional regulation of hTERT in breast cancer cells. Collectively, our results provide new insights into understanding the regulatory mechanism of CSCs and suggest that the NMI-YY1-hTERT signaling axis may be a potential therapeutic target for breast cancers.
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Zakaria N, Satar NA, Abu Halim NH, Ngalim SH, Yusoff NM, Lin J, Yahaya BH. Targeting Lung Cancer Stem Cells: Research and Clinical Impacts. Front Oncol 2017; 7:80. [PMID: 28529925 PMCID: PMC5418222 DOI: 10.3389/fonc.2017.00080] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Accepted: 04/11/2017] [Indexed: 12/26/2022] Open
Abstract
Lung cancer is the most common cancer worldwide, accounting for 1.8 million new cases and 1.6 million deaths in 2012. Non-small cell lung cancer (NSCLC), which is one of two types of lung cancer, accounts for 85–90% of all lung cancers. Despite advances in therapy, lung cancer still remains a leading cause of death. Cancer relapse and dissemination after treatment indicates the existence of a niche of cancer cells that are not fully eradicated by current therapies. These chemoresistant populations of cancer cells are called cancer stem cells (CSCs) because they possess the self-renewal and differentiation capabilities similar to those of normal stem cells. Targeting the niche of CSCs in combination with chemotherapy might provide a promising strategy to eradicate these cells. Thus, understanding the characteristics of CSCs has become a focus of studies of NSCLC therapies.
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Affiliation(s)
- Norashikin Zakaria
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Kepala Batas, Penang, Malaysia
| | - Nazilah Abdul Satar
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Kepala Batas, Penang, Malaysia
| | - Noor Hanis Abu Halim
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Kepala Batas, Penang, Malaysia
| | - Siti Hawa Ngalim
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Kepala Batas, Penang, Malaysia
| | - Narazah Mohd Yusoff
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Kepala Batas, Penang, Malaysia
| | - Juntang Lin
- College of Life Science and Technology, Xinxiang Medical University (XXMU), Xinxiang, China.,College of Biomedical Engineering, Xinxiang Medical University (XXMU), Xinxiang, China
| | - Badrul Hisham Yahaya
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, Kepala Batas, Penang, Malaysia
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Tiran V, Stanzer S, Heitzer E, Meilinger M, Rossmann C, Lax S, Tsybrovskyy O, Dandachi N, Balic M. Genetic profiling of putative breast cancer stem cells from malignant pleural effusions. PLoS One 2017; 12:e0175223. [PMID: 28423035 PMCID: PMC5396869 DOI: 10.1371/journal.pone.0175223] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 03/22/2017] [Indexed: 12/31/2022] Open
Abstract
A common symptom during late stage breast cancer disease is pleural effusion, which is related to poor prognosis. Malignant cells can be detected in pleural effusions indicating metastatic spread from the primary tumor site. Pleural effusions have been shown to be a useful source for studying metastasis and for isolating cells with putative cancer stem cell (CSC) properties. For the present study, pleural effusion aspirates from 17 metastatic breast cancer patients were processed to propagate CSCs in vitro. Patient-derived aspirates were cultured under sphere forming conditions and isolated primary cultures were further sorted for cancer stem cell subpopulations ALDH1+ and CD44+CD24-/low. Additionally, sphere forming efficiency of CSC and non-CSC subpopulations was determined. In order to genetically characterize the different tumor subpopulations, DNA was isolated from pleural effusions before and after cell sorting, and compared with corresponding DNA copy number profiles from primary tumors or bone metastasis using low-coverage whole genome sequencing (SCNA-seq). In general, unsorted cells had a higher potential to form spheres when compared to CSC subpopulations. In most cases, cell sorting did not yield sufficient cells for copy number analysis. A total of five from nine analyzed unsorted pleura samples (55%) showed aberrant copy number profiles similar to the respective primary tumor. However, most sorted subpopulations showed a balanced profile indicating an insufficient amount of tumor cells and low sensitivity of the sequencing method. Finally, we were able to establish a long term cell culture from one pleural effusion sample, which was characterized in detail. In conclusion, we confirm that pleural effusions are a suitable source for enrichment of putative CSC. However, sequencing based molecular characterization is impeded due to insufficient sensitivity along with a high number of normal contaminating cells, which are masking genetic alterations of rare cancer (stem) cells.
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MESH Headings
- Aged
- Aged, 80 and over
- Bone Neoplasms/diagnosis
- Bone Neoplasms/genetics
- Bone Neoplasms/metabolism
- Bone Neoplasms/secondary
- Breast Neoplasms/diagnosis
- Breast Neoplasms/genetics
- Breast Neoplasms/metabolism
- Breast Neoplasms/pathology
- Carcinoma, Ductal, Breast/diagnosis
- Carcinoma, Ductal, Breast/genetics
- Carcinoma, Ductal, Breast/metabolism
- Carcinoma, Ductal, Breast/secondary
- Cell Separation/instrumentation
- Cell Separation/methods
- DNA Copy Number Variations
- DNA, Neoplasm/genetics
- Female
- Flow Cytometry
- Humans
- Microsatellite Repeats
- Middle Aged
- Neoplastic Stem Cells/metabolism
- Neoplastic Stem Cells/pathology
- Pleural Effusion, Malignant/diagnosis
- Pleural Effusion, Malignant/genetics
- Pleural Effusion, Malignant/metabolism
- Pleural Effusion, Malignant/pathology
- Primary Cell Culture
- Prospective Studies
- Spheroids, Cellular/metabolism
- Spheroids, Cellular/pathology
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Affiliation(s)
- Verena Tiran
- Department of Internal Medicine, Division of Oncology, Medical University of Graz, Graz, Austria
| | - Stefanie Stanzer
- Department of Internal Medicine, Division of Oncology, Medical University of Graz, Graz, Austria
| | - Ellen Heitzer
- Institute of Human Genetics, Medical University of Graz, Graz, Austria
| | - Michael Meilinger
- Department of Internal Medicine, Division of Pulmonology, Medical University of Graz, Graz, Austria
- Second Internal Division of Pulmonology, Otto Wagner Spital, Vienna, Austria
| | - Christopher Rossmann
- Department of Internal Medicine, Division of Oncology, Medical University of Graz, Graz, Austria
| | - Sigurd Lax
- Institute of Pathology, LKH Graz West, Graz, Austria
| | | | - Nadia Dandachi
- Department of Internal Medicine, Division of Oncology, Medical University of Graz, Graz, Austria
- Research Unit Epigenetic and Genetic Cancer Biomarkers, Medical University of Graz, Graz, Austria
- * E-mail: (ND); (MB)
| | - Marija Balic
- Department of Internal Medicine, Division of Oncology, Medical University of Graz, Graz, Austria
- Research Unit Circulating Tumor Cells and Cancer Stem Cells, Medical University of Graz, Graz, Austria
- * E-mail: (ND); (MB)
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224
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Guo T, Kong J, Liu Y, Li Z, Xia J, Zhang Y, Zhao S, Li F, Li J, Gu C. Transcriptional activation of NANOG by YBX1 promotes lung cancer stem-like properties and metastasis. Biochem Biophys Res Commun 2017; 487:153-159. [PMID: 28400280 DOI: 10.1016/j.bbrc.2017.04.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 04/07/2017] [Indexed: 01/11/2023]
Abstract
Aberrant overexpression of the transcription/translation factor Y-box-binding protein-1 (YBX1) is associated with non-small cell lung cancer (NSCLC) aggressiveness. Cancer stem cells (CSCs) contribute to the tumorigenesis and metastasis of NSCLC. Hitherto, the mechanism by which YBX1 regulates CSCs and metastasis in NSCLC remains unclear. Here, we demonstrated that YBX1 levels were elevated in NSCLC tissues and cell lines. Enforced expression of YBX1 promoted NSCLC cells invasion, sphere forming ability and ALDH1+ population. Conversely, reduced YBX1 impaired CSC properties of NSCLC cells in vitro and tumor-initiating frequencies, as well as metastasis in vivo. Importantly, we described a mechanism whereby YBX1 directly promoted NANOG, a transcription factor, transcriptional activation. Depletion of NANOG abolished the enhanced ability of invasion and sphere formation in YBX1 elevated-A549 cells. Collectively, these findings demonstrate a novel role of YBX1 in maintaining the stemness of CSCs and metastasis, unveiling YBX1 as promising therapeutic target for NSCLC treatments.
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Affiliation(s)
- Tao Guo
- Department of Thoracic Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China; Lung Cancer Diagnosis and Treatment Center of Dalian, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China
| | - Jing Kong
- College of Stomatology, Dalian Medical University, Dalian, 116044, China
| | - Yang Liu
- Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China
| | - Zhuoshi Li
- Department of Thoracic Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China; Lung Cancer Diagnosis and Treatment Center of Dalian, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China
| | - Jianglong Xia
- Department of Thoracic Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China
| | - Yan Zhang
- Department of Radiation Oncology, Qianfoshan Hospital Affiliated to Shandong University, Jinan, 250000, China
| | - Shilei Zhao
- Department of Thoracic Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China; Lung Cancer Diagnosis and Treatment Center of Dalian, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China
| | - Fengzhou Li
- Department of Thoracic Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China; Lung Cancer Diagnosis and Treatment Center of Dalian, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China
| | - Jinxiu Li
- Lung Cancer Diagnosis and Treatment Center of Dalian, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China.
| | - Chundong Gu
- Department of Thoracic Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China; Lung Cancer Diagnosis and Treatment Center of Dalian, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China.
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225
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Ma F, Li H, Li Y, Ding X, Wang H, Fan Y, Lin C, Qian H, Xu B. Aldehyde dehydrogenase 1 (ALDH1) expression is an independent prognostic factor in triple negative breast cancer (TNBC). Medicine (Baltimore) 2017; 96:e6561. [PMID: 28383433 PMCID: PMC5411217 DOI: 10.1097/md.0000000000006561] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Triple negative breast cancer (TNBC) is a subset of breast cancer that is highly aggressive and has a poor prognosis. Meanwhile, cancer stem cells (CSCs) are also characterized by a strong tumorigenic potential, which might be partly responsible for the aggressive behavior of TNBC. We previously showed that CSCs are enriched in TNBC cell lines and tissues. Further experiments in animal models revealed higher tumorigenicity of CSCs sorted from TNBC cell lines. In this study, we aimed to determine the clinical relationship between CSCs and TNBC by exploring the expression of aldehyde dehydrogenase 1 (ALDH1), which is a putative marker of breast CSCs, in TNBC tissues.ALDH1 levels in paraffin-embedded tumor tissues from 158 TNBC patients were evaluated by immunohistochemistry staining using an ALDH1A1 primary antibody. Staining evaluation was performed independently by two pathologists, and the expression level of ALDH1 was evaluated in terms of the percentage and intensity of positive cells. The association of immunohistochemistry staining of ALDH1 expression with clinical parameters was also analyzed.ALDH1 expression in tumor cells was observed in 88 out of 158 cases (55.7%). Analysis of clinicopathological parameters showed that the immunohistochemistry staining of ALDH1 was significantly correlated with tumor size (P = 0.02) and stage (P = 0.04). Survival analysis in patients with ALDH1 expression demonstrated shorter relapse-free survival (RFS) and overall survival (OS) times (P = 0.01; P = 0.001). Moreover, Cox multivariate analysis revealed that ALDH1 expression was an independent prognostic indicator of RFS and OS (P = 0.04; P = 0.04).Immunohistochemistry staining of ALDH1 in tumor cells is an independent prognostic indicator of RFS and OS in TNBC patients.
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Affiliation(s)
- Fei Ma
- Department of Medical Oncology, National Cancer Center/Cancer Hospital,Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Huihui Li
- Department of Medical Oncology, Shandong Cancer Hospital/Institute, Jinan, Shandong
| | - Yiqun Li
- Department of Medical Oncology, National Cancer Center/Cancer Hospital,Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Xiaoyan Ding
- Department of Medical Oncology, Beijing Ditan Hospital, Capital Medical University
| | - Haijuan Wang
- State Key Laboratory of Molecular Oncology, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ying Fan
- Department of Medical Oncology, National Cancer Center/Cancer Hospital,Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Chen Lin
- State Key Laboratory of Molecular Oncology, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Haili Qian
- State Key Laboratory of Molecular Oncology, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Binghe Xu
- Department of Medical Oncology, National Cancer Center/Cancer Hospital,Chinese Academy of Medical Sciences and Peking Union Medical College
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226
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Bredemeier M, Kasimir-Bauer S, Kolberg HC, Herold T, Synoracki S, Hauch S, Edimiris P, Bankfalvi A, Tewes M, Kimmig R, Aktas B. Comparison of the PI3KCA pathway in circulating tumor cells and corresponding tumor tissue of patients with metastatic breast cancer. Mol Med Rep 2017; 15:2957-2968. [PMID: 28358430 PMCID: PMC5428904 DOI: 10.3892/mmr.2017.6415] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 12/19/2016] [Indexed: 12/16/2022] Open
Abstract
The aim of the present study was to compare the phosphatidylinositol 3-kinase (PI3KCA)-AKT serine/threonine kinase (AKT) pathway in circulating tumor cells (CTCs) and corresponding cancerous tissues. Stemness-like circulating tumor cells (slCTCs) and CTCs in epithelial-mesenchymal transition (EMT) have been implicated as the active source of metastatic spread in breast cancer (BC). In this regard, the PI3KCA-AKT signaling pathway was demonstrated to be implicated in and to be frequently mutated in BC. The present study compared this pathway in slCTCs/CTCs in EMT and the corresponding tumor tissues of 90 metastatic BC patients (pts). slCTCs and CTCs in EMT were isolated using the AdnaTest EMT-1/StemCell for the detection of aldehyde dehydrogenase 1 family member A1 (ALDH1) (singleplex PCR) and PI3KCA, AKT2 and twist family bHLH transcription factor 1 (multiplex PCR). Tumor tissue was investigated for PI3KCA hotspot mutations using Sanger sequencing of genomic DNA from micro-dissected formalin-fixed paraffin-embedded tissue, and for the expression of ALDH1 and phosphorylated AKT (pAKT), and phosphatase and tensin homolog (PTEN) loss, by immunohistochemistry. slCTCs were identified in 23% of pts (21/90 pts) and CTCs in EMT in 56% (50/90 pts) of pts. pAKT and ALDH1 positivity in tumor tissue was identified in 47 and 9% of cases, respectively, and a PTEN loss was observed in 18% of pts. A significant association was detected between pAKT expression in cancerous tissue and AKT2 expression in CTCs (P=0.037). PI3KCA mutations were detected in 32% of pts, most frequently on exons 21 (55%) and 10 (45%). Pts with PI3KCA mutations in tumor tissue had a significantly longer overall survival than pts with wild-type PI3KCA expression (P=0.007). Similar results were obtained for pts with aberrant PI3KCA signaling in CTCs and/or aberrant signaling in cancerous tissue (P=0.009). Therapy-resistant CTCs, potentially derived from the primary tumor or metastatic tissue, may be eliminated with specific PI3K pathway inhibitors, alone or in combination, to improve the prognosis of metastatic BC pts.
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Affiliation(s)
- Maren Bredemeier
- Department of Gynecology and Obstetrics, University Hospital Essen, University of Duisburg‑Essen, D‑45122 Essen, Germany
| | - Sabine Kasimir-Bauer
- Department of Gynecology and Obstetrics, University Hospital Essen, University of Duisburg‑Essen, D‑45122 Essen, Germany
| | - Hans-Christian Kolberg
- Department of Gynecology and Obstetrics, Marienhospital Bottrop, D‑46236 Bottrop, Germany
| | - Thomas Herold
- Institute of Pathology, University Hospital Essen, University of Duisburg‑Essen, D‑45122 Essen, Germany
| | - Sarah Synoracki
- Institute of Pathology, University Hospital Essen, University of Duisburg‑Essen, D‑45122 Essen, Germany
| | | | - Philippos Edimiris
- Department of Gynecology and Obstetrics, University Hospital Essen, University of Duisburg‑Essen, D‑45122 Essen, Germany
| | - Agnes Bankfalvi
- Institute of Pathology, University Hospital Essen, University of Duisburg‑Essen, D‑45122 Essen, Germany
| | - Mitra Tewes
- Department of Medical Oncology, West German Cancer Center, University Hospital Essen, University of Duisburg‑Essen, D‑45122 Essen, Germany
| | - Rainer Kimmig
- Department of Gynecology and Obstetrics, University Hospital Essen, University of Duisburg‑Essen, D‑45122 Essen, Germany
| | - Bahriye Aktas
- Department of Gynecology and Obstetrics, University Hospital Essen, University of Duisburg‑Essen, D‑45122 Essen, Germany
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227
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A CD44v + subpopulation of breast cancer stem-like cells with enhanced lung metastasis capacity. Cell Death Dis 2017; 8:e2679. [PMID: 28300837 PMCID: PMC5386565 DOI: 10.1038/cddis.2017.72] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 01/20/2017] [Accepted: 01/30/2017] [Indexed: 12/11/2022]
Abstract
Cancer stem-like cells (CSCs) are a subpopulation of cancer cells responsible for tumor growth, and recent evidence suggests that CSCs also contribute to cancer metastasis. However, the heterogeneity of CSCs in metastasis capacities is still unclear in breast cancer. Here we show that among the CD24−/CD44+ breast CSCs, a subset expressing the variant isoform of CD44 (CD44v) displays significantly higher capacity of lung metastasis than that expressing the standard CD44 isoform CD44s. Increasing or reducing the CD44v/CD44s ratio of breast cancer cells by regulating the expression of epithelial splicing regulatory protein 1 (ESRP1) leads to promotion or suppression of lung metastasis without influencing cancer cell stemness. Directly suppressing CD44v expression significantly alleviates the metastasis burden in lungs. Mechanically, CD44v, but not CD44s, responds to osteopontin (OPN) in the lung environment to enhance cancer cell invasiveness and promote lung metastasis. In clinical samples expression of ESRP1 and CD44v, rather than CD44s or total CD44, positively correlates with distant metastasis. Overall, our data identify a subset of metastatic breast CSCs characterized by CD44v expression, and suggest that CD44v and ESRP1 might be better prognosis markers and therapeutic targets for breast cancer metastasis.
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228
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Ibrahim SA, Gadalla R, El-Ghonaimy EA, Samir O, Mohamed HT, Hassan H, Greve B, El-Shinawi M, Mohamed MM, Götte M. Syndecan-1 is a novel molecular marker for triple negative inflammatory breast cancer and modulates the cancer stem cell phenotype via the IL-6/STAT3, Notch and EGFR signaling pathways. Mol Cancer 2017; 16:57. [PMID: 28270211 PMCID: PMC5341174 DOI: 10.1186/s12943-017-0621-z] [Citation(s) in RCA: 176] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 02/22/2017] [Indexed: 12/15/2022] Open
Abstract
Background Inflammatory breast cancer (IBC), a particularly aggressive form of breast cancer, is characterized by cancer stem cell (CSC) phenotype. Due to a lack of targeted therapies, the identification of molecular markers of IBC is of major importance. The heparan sulfate proteoglycan Syndecan-1 acts as a coreceptor for growth factors and chemokines, modulating inflammation, tumor progression, and cancer stemness, thus it may emerge as a molecular marker for IBC. Methods We characterized expression of Syndecan-1 and the CSC marker CD44, Notch-1 & -3 and EGFR in carcinoma tissues of triple negative IBC (n = 13) and non-IBC (n = 17) patients using qPCR and immunohistochemistry. Impact of siRNA-mediated Syndecan-1 knockdown on the CSC phenotype of the human triple negative IBC cell line SUM-149 and HER-2-overexpressing non-IBC SKBR3 cells employing qPCR, flow cytometry, Western blotting, secretome profiling and Notch pharmacological inhibition experiments. Data were statistically analyzed using Student’s t-test/Mann-Whitney U-test or one-way ANOVA followed by Tukey’s multiple comparison tests. Results Our data indicate upregulation and a significant positive correlation of Syndecan-1 with CD44 protein, and Notch-1 & -3 and EGFR mRNA in IBC vs non-IBC. ALDH1 activity and the CD44(+)CD24(-/low) subset as readout of a CSC phenotype were reduced upon Syndecan-1 knockdown. Functionally, Syndecan-1 silencing significantly reduced 3D spheroid and colony formation. Intriguingly, qPCR results indicate downregulation of the IL-6, IL-8, CCL20, gp130 and EGFR mRNA upon Syndecan-1 suppression in both cell lines. Moreover, Syndecan-1 silencing significantly downregulated Notch-1, -3, -4 and Hey-1 in SUM-149 cells, and downregulated only Notch-3 and Gli-1 mRNA in SKBR3 cells. Secretome profiling unveiled reduced IL-6, IL-8, GRO-alpha and GRO a/b/g cytokines in conditioned media of Syndecan-1 knockdown SUM-149 cells compared to controls. The constitutively activated STAT3 and NFκB, and expression of gp130, Notch-1 & -2, and EGFR proteins were suppressed upon Syndecan-1 ablation. Mechanistically, gamma-secretase inhibition experiments suggested that Syndecan-1 may regulate the expression of IL-6, IL-8, gp130, Hey-1, EGFR and p-Akt via Notch signaling. Conclusions Syndecan-1 acts as a novel tissue biomarker and a modulator of CSC phenotype of triple negative IBC via the IL-6/STAT3, Notch and EGFR signaling pathways, thus emerging as a promising therapeutic target for IBC. Electronic supplementary material The online version of this article (doi:10.1186/s12943-017-0621-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | - Ramy Gadalla
- Department of Zoology, Faculty of Science, Cairo University, 12613, Giza, Egypt
| | - Eslam A El-Ghonaimy
- Department of Zoology, Faculty of Science, Cairo University, 12613, Giza, Egypt
| | - Omnia Samir
- Department of Zoology, Faculty of Science, Cairo University, 12613, Giza, Egypt
| | - Hossam Taha Mohamed
- Department of Zoology, Faculty of Science, Cairo University, 12613, Giza, Egypt
| | - Hebatallah Hassan
- Department of Zoology, Faculty of Science, Cairo University, 12613, Giza, Egypt
| | - Burkhard Greve
- Department of Radiotherapy-Radiooncology, University Hospital Münster, Münster, Germany
| | - Mohamed El-Shinawi
- Department of General Surgery, Faculty of Medicine, Ain Shams University, 11566, Cairo, Egypt
| | | | - Martin Götte
- Department of Gynecology and Obstetrics, Münster University Hospital, Albert-Schweitzer-Campus 1, D11, 48149, Münster, Germany.
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229
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Shiraishi A, Tachi K, Essid N, Tsuboi I, Nagano M, Kato T, Yamashita T, Bando H, Hara H, Ohneda O. Hypoxia promotes the phenotypic change of aldehyde dehydrogenase activity of breast cancer stem cells. Cancer Sci 2017; 108:362-372. [PMID: 28012234 PMCID: PMC5378271 DOI: 10.1111/cas.13147] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 12/15/2016] [Accepted: 12/20/2016] [Indexed: 12/21/2022] Open
Abstract
Stable breast cancer cell (BCC) lines are valuable tools for the identification of breast cancer stem cell (BCSC) phenotypes that develop in response to several stimuli as well as for studying the basic mechanisms associated with the initiation and maintenance of BCSCs. However, the characteristics of individual, BCC‐derived BCSCs varies and these cells show distinct phenotypes depending on the different BCSC markers used for their isolation. Aldehyde dehydrogenase (ALDH) activity is just such a recognized biomarker of BCSCs with a CD44+/CD24− phenotype. We isolated BCSCs with high ALDH activity (CD44+/CD24−/Aldefluorpos) from a primary culture of human breast cancer tissue and observed that the cells had stem cell properties compared to BCSCs with no ALDH activity (CD44+/CD24−/Aldefluorneg). Moreover, we found AldefluorposBCSCs had a greater hypoxic response and subsequent induction of HIF‐1α expression compared to the AldefluornegBCSCs. We also found that knocking down HIF‐1α, but not HIF‐2α, in AldefluorposBCSCs led to a significant reduction of the stem cell properties through a decrease in the mRNA levels of genes associated with the epithelial‐mesenchymal transition. Indeed, HIF‐1α overexpression in AldefluornegBCSCs led to Slug and Snail mRNA increase and the associated repression of E‐cadherin and increase in Vimentin. Of note, prolonged hypoxic stimulation promoted the phenotypic changes of AldefluornegBCSCs including ALDH activity, tumorigenesis and metastasis, suggesting that hypoxia in the tumor environment may influence BCSC fate and breast cancer clinical outcomes.
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Affiliation(s)
- Akira Shiraishi
- Department of Regenerative Medicine and Stem Cell Biology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Kana Tachi
- Department of Regenerative Medicine and Stem Cell Biology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.,Department of Breast-Thyroid-Endocrine Surgery, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Nesrine Essid
- Department of Regenerative Medicine and Stem Cell Biology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Ikki Tsuboi
- Department of Regenerative Medicine and Stem Cell Biology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Masumi Nagano
- Department of Regenerative Medicine and Stem Cell Biology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Toshiki Kato
- Department of Regenerative Medicine and Stem Cell Biology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.,Ph.D. Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Toshiharu Yamashita
- Department of Regenerative Medicine and Stem Cell Biology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Hiroko Bando
- Department of Breast-Thyroid-Endocrine Surgery, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Hisato Hara
- Department of Breast-Thyroid-Endocrine Surgery, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Osamu Ohneda
- Department of Regenerative Medicine and Stem Cell Biology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
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Da C, Wu L, Liu Y, Wang R, Li R. Effects of irradiation on radioresistance, HOTAIR and epithelial-mesenchymal transition/cancer stem cell marker expression in esophageal squamous cell carcinoma. Oncol Lett 2017; 13:2751-2757. [PMID: 28454462 DOI: 10.3892/ol.2017.5774] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 09/22/2016] [Indexed: 12/29/2022] Open
Abstract
Radiotherapy is a common therapeutic strategy used to treat esophageal squamous cell carcinoma (ESCC). However, tumor cells often develop radioresistance, thereby reducing treatment efficacy. Here, we aimed to identify the mechanisms through which ESCC cells develop radioresistance and identify associated biomarkers. Eca109 cells were exposed to repeated radiation at 2 Gy/fraction for a total dose of 60 Gy (Eca109R60/2Gy cells). MTT and colony formation assays were performed to measure cell proliferation and compare the radiation biology parameters of Eca109 and Eca109R60/2Gy cells. Cell cycle distributions and apoptosis were assessed by flow cytometry. Reverse transcription-quantitative polymerase chain reaction and western blotting were employed to analyze the expression of HOX transcript antisense RNA (HOTAIR), in addition to biomarkers of the epithelial-mesenchymal transition (EMT) and cancer stem cells (CSCs). Eca109R60/2Gy cells exhibited increased cell proliferation and clone formation, with significantly higher radiobiological parameters compared with the parental Eca109 cells. The Eca109R60/2Gy cells also exhibited significantly decreased accumulation in G2 phase and increased accumulation in S phase. Additionally, the apoptosis rate was significantly lower in Eca109R60/2Gy cells than in parental Eca109 cells. Finally, HOTAIR expression levels and SNAI1 and β-catenin mRNA and protein expression levels were significantly higher, whereas E-cadherin levels were significantly lower in Eca109R60/2Gy cells than in Eca109 cells. Therefore, our findings demonstrated that radioresistance was affected by the expression of HOTAIR and biomarkers of the EMT and CSCs.
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Affiliation(s)
- Chunli Da
- Radiotherapy Center, Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830000, P.R. China
| | - Li Wu
- Radiotherapy Center, Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830000, P.R. China
| | - Yuting Liu
- Department of Anesthesiology, Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830000, P.R. China
| | - Ruozheng Wang
- Radiotherapy Center, Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830000, P.R. China
| | - Ruiguang Li
- Endoscopic Diagnosis and Treatment Center, Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830000, P.R. China
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McCauley HA, Chevrier V, Birnbaum D, Guasch G. De-repression of the RAC activator ELMO1 in cancer stem cells drives progression of TGFβ-deficient squamous cell carcinoma from transition zones. eLife 2017; 6:e22914. [PMID: 28219480 PMCID: PMC5319840 DOI: 10.7554/elife.22914] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 01/27/2017] [Indexed: 01/18/2023] Open
Abstract
Squamous cell carcinomas occurring at transition zones are highly malignant tumors with poor prognosis. The identity of the cell population and the signaling pathways involved in the progression of transition zone squamous cell carcinoma are poorly understood, hence representing limited options for targeted therapies. Here, we identify a highly tumorigenic cancer stem cell population in a mouse model of transitional epithelial carcinoma and uncover a novel mechanism by which loss of TGFβ receptor II (Tgfbr2) mediates invasion and metastasis through de-repression of ELMO1, a RAC-activating guanine exchange factor, specifically in cancer stem cells of transition zone tumors. We identify ELMO1 as a novel target of TGFβ signaling and show that restoration of Tgfbr2 results in a complete block of ELMO1 in vivo. Knocking down Elmo1 impairs metastasis of carcinoma cells to the lung, thereby providing insights into the mechanisms of progression of Tgfbr2-deficient invasive transition zone squamous cell carcinoma.
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Affiliation(s)
- Heather A McCauley
- Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, United States
| | - Véronique Chevrier
- Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm, U1068, F-13009, CNRS, UMR7258, F-13009, Institut Paoli-Calmettes, F-13009, Aix-Marseille University, UM 105, F-13284, Marseille, France
| | - Daniel Birnbaum
- Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm, U1068, F-13009, CNRS, UMR7258, F-13009, Institut Paoli-Calmettes, F-13009, Aix-Marseille University, UM 105, F-13284, Marseille, France
| | - Géraldine Guasch
- Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, United States
- Centre de Recherche en Cancérologie de Marseille (CRCM), Inserm, U1068, F-13009, CNRS, UMR7258, F-13009, Institut Paoli-Calmettes, F-13009, Aix-Marseille University, UM 105, F-13284, Marseille, France
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Ma Z, Parris AB, Xiao Z, Howard EW, Kosanke SD, Feng X, Yang X. Short-term early exposure to lapatinib confers lifelong protection from mammary tumor development in MMTV-erbB-2 transgenic mice. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2017; 36:6. [PMID: 28061785 PMCID: PMC5217213 DOI: 10.1186/s13046-016-0479-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 12/16/2016] [Indexed: 02/04/2023]
Abstract
BACKGROUND Although chemopreventative agents targeting the estrogen/estrogen receptor (ER) pathway have been effective for ER+ breast cancers, prevention of hormone receptor-negative breast cancers, such as Her2/erbB-2+ breast cancers, remains a significant issue. Previous studies have demonstrated that administration of EGFR/erbB-2-targeting lapatinib to MMTV-erbB-2 transgenic mice inhibited mammary tumor development. The prevention, however, was achieved by prolonged high dose exposure. The tolerance to high dose/long-term drug administration may hinder its potential in clinical settings. Therefore, we aimed to test a novel, short-term chemopreventative strategy using lapatinib during the premalignant risk window in MMTV-erbB-2 mice. METHODS We initially treated cultured cells with lapatinib to explore the anti-proliferative effects of lapatinib in vitro. We used a syngeneic tumor graft model to begin exploring the in vivo anti-tumorigenic effects of lapatinib in MMTV-erbB-2 mice. Then, we tested the efficacy of brief exposure to lapatinib (100 mg/kg/day for 8 weeks), beginning at 16 weeks of age, in the prevention of mammary tumor development in MMTV-erbB-2 mice. RESULTS In the syngeneic tumor transplant model, we determined that lapatinib significantly inhibited tumor cell proliferation. Furthermore, we demonstrated that short-term lapatinib exposure resulted in life-long protective effects, as supported by increased tumor latency in lapatinib-treated mice compared to the control mice. We further established that delayed tumor development in the treated mice was preceded by decreased BrdU nuclear incorporation and inhibited mammary morphogenesis. Molecular analysis indicated that lapatinib inhibited phosphorylation and expression of EGFR, erbB-3, erbB-2, Akt1, and Erk1/2 in premalignant mammary tissues. Also, lapatinib drastically inhibited the phosphorylation and expression of ERα and the transcription of ER target genes in premalignant mammary tissues. We also determined that lapatinib suppressed the stemness of breast cancer cell lines, as evidenced by decreased tumorsphere formation and ALDH+ cell populations. CONCLUSIONS Taken together, these data demonstrate that brief treatment with EGFR/erbB-2-targeting agents before the onset of tumors may provide lifelong protection from mammary tumors, through the concurrent inhibition of erbB-2 and ER signaling pathways and consequential reprogramming. Our findings support further clinical testing to explore the benefit of shorter lapatinib exposure in the prevention of erbB-2-mediated carcinogenesis.
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Affiliation(s)
- Zhikun Ma
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, 500 Laureate Way, Room 4301, Kannapolis, NC, 28081, USA.,Department of Oncology, First Affiliated Hospital of Henan University of Sciences and Technology, Luoyang, China
| | - Amanda B Parris
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, 500 Laureate Way, Room 4301, Kannapolis, NC, 28081, USA
| | - Zhengzheng Xiao
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, 500 Laureate Way, Room 4301, Kannapolis, NC, 28081, USA
| | - Erin W Howard
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, 500 Laureate Way, Room 4301, Kannapolis, NC, 28081, USA
| | - Stanley D Kosanke
- Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA
| | - Xiaoshan Feng
- Department of Oncology, First Affiliated Hospital of Henan University of Sciences and Technology, Luoyang, China
| | - Xiaohe Yang
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, 500 Laureate Way, Room 4301, Kannapolis, NC, 28081, USA. .,Department of Oncology, First Affiliated Hospital of Henan University of Sciences and Technology, Luoyang, China.
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Dias K, Dvorkin-Gheva A, Hallett RM, Wu Y, Hassell J, Pond GR, Levine M, Whelan T, Bane AL. Claudin-Low Breast Cancer; Clinical & Pathological Characteristics. PLoS One 2017; 12:e0168669. [PMID: 28045912 PMCID: PMC5207440 DOI: 10.1371/journal.pone.0168669] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 12/05/2016] [Indexed: 12/18/2022] Open
Abstract
Claudin-low breast cancer is a molecular type of breast cancer originally identified by gene expression profiling and reportedly associated with poor survival. Claudin-low tumors have been recognised to preferentially display a triple-negative phenotype, however only a minority of triple-negative breast cancers are claudin-low. We sought to identify an immunohistochemical profile for claudin-low tumors that could facilitate their identification in formalin fixed paraffin embedded tumor material. First, an in silico collection of ~1600 human breast cancer expression profiles was assembled and all claudin-low tumors identified. Second, genes differentially expressed between claudin-low tumors and all other molecular subtypes of breast cancer were identified. Third, a number of these top differentially expressed genes were tested using immunohistochemistry for expression in a diverse panel of breast cancer cell lines to determine their specificity for claudin-low tumors. Finally, the immunohistochemical panel found to be most characteristic of claudin-low tumors was examined in a cohort of 942 formalin fixed paraffin embedded human breast cancers with >10 years clinical follow-up to evaluate the clinico-pathologic and survival characteristics of this tumor subtype. Using this approach we determined that claudin-low breast cancer is typically negative for ER, PR, HER2, claudin 3, claudin 4, claudin 7 and E-cadherin. Claudin-low tumors identified with this immunohistochemical panel, were associated with young age of onset, higher tumor grade, larger tumor size, extensive lymphocytic infiltrate and a circumscribed tumor margin. Patients with claudin-low tumors had a worse overall survival when compared to patients with luminal A type breast cancer. Interestingly, claudin-low tumors were associated with a low local recurrence rate following breast conserving therapy. In conclusion, a limited panel of antibodies can facilitate the identification of claudin-low tumors. Furthermore, claudin-low tumors identified in this manner display similar clinical, pathologic and survival characteristics to claudin-low tumors identified from fresh frozen tumor material using gene expression profiling.
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Affiliation(s)
- Kay Dias
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada
- Department of Oncology, McMaster University, Hamilton, Ontario, Canada
| | - Anna Dvorkin-Gheva
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Robin M. Hallett
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Ying Wu
- Department of Oncology, McMaster University, Hamilton, Ontario, Canada
| | - John Hassell
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Gregory R. Pond
- Department of Oncology, McMaster University, Hamilton, Ontario, Canada
| | - Mark Levine
- Department of Oncology, McMaster University, Hamilton, Ontario, Canada
| | - Tim Whelan
- Department of Oncology, McMaster University, Hamilton, Ontario, Canada
| | - Anita L. Bane
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada
- Department of Oncology, McMaster University, Hamilton, Ontario, Canada
- * E-mail:
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Cavaco MC, Pereira C, Kreutzer B, Gouveia LF, Silva-Lima B, Brito AM, Videira M. Evading P-glycoprotein mediated-efflux chemoresistance using Solid Lipid Nanoparticles. Eur J Pharm Biopharm 2017; 110:76-84. [DOI: 10.1016/j.ejpb.2016.10.024] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 09/21/2016] [Accepted: 10/30/2016] [Indexed: 01/10/2023]
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Espada J, Martín-Pérez J. An Update on Src Family of Nonreceptor Tyrosine Kinases Biology. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2017; 331:83-122. [DOI: 10.1016/bs.ircmb.2016.09.009] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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236
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Bhat MA, Al-Dhfyan A, Al-Omar MA. Targeting Cancer Stem Cells with Novel 4-(4-Substituted phenyl)-5-(3,4,5-trimethoxy/3,4-dimethoxy)-benzoyl-3,4-dihydropyrimidine-2(1H)-one/thiones. Molecules 2016; 21:molecules21121746. [PMID: 27999374 PMCID: PMC6272899 DOI: 10.3390/molecules21121746] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 12/12/2016] [Accepted: 12/13/2016] [Indexed: 01/16/2023] Open
Abstract
Novel 4-(4-substituted phenyl)-5-(3,4,5-trimethoxy/3,4-dimethoxy)-benzoyl-3,4-dihydropyrimidine-2(1H)-one/thione derivatives (DHP1–9) were designed, synthesized, characterized and evaluated for antitumor activity against cancer stem cells. The compounds were synthesized in one pot. Enaminones E1 and E2 were reacted with substituted benzaldehydes and urea/thiourea in the presence of glacial acetic acid. The synthesized compounds were characterized by spectral analysis. The compounds were screened in vitro against colon cancer cell line (LOVO) colon cancer stem cells. Most of the compounds were found to be active against side population cancer stem cells with an inhibition of >50% at a 10 μM concentration. Compounds DHP-1, DHP-7 and DHP-9 were found to be inactive. Compound DHP-5 exhibited an in vitro anti-proliferative effect and arrested cancer cells at the Gap 2 phase (G2) checkpoint and demonstrated an inhibitory effect on tumor growth for a LOVO xenograft in a nude mouse experiment.
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Affiliation(s)
- Mashooq Ahmad Bhat
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Abdullah Al-Dhfyan
- Stem Cell & Tissue Re-Engineering Program, Research Center, King Faisal Specialized Hospital & Research Center, MBC-03, P.O. Box 3354, Riyadh 11211, Saudi Arabia.
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Mohamed A Al-Omar
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia.
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Smit L, Berns K, Spence K, Ryder WD, Zeps N, Madiredjo M, Beijersbergen R, Bernards R, Clarke RB. An integrated genomic approach identifies that the PI3K/AKT/FOXO pathway is involved in breast cancer tumor initiation. Oncotarget 2016; 7:2596-610. [PMID: 26595803 PMCID: PMC4823058 DOI: 10.18632/oncotarget.6354] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 10/18/2015] [Indexed: 12/26/2022] Open
Abstract
Therapy resistance is one of the major impediments to successful cancer treatment. In breast cancer, a small subpopulation of cells with stem cell features, named breast cancer stem cells (BCSC), is responsible for metastasis and recurrence of the tumor. BCSC have the unique ability to grow under non-adherent conditions in "mammospheres". To prevent breast cancer recurrence and metastasis it will be crucial to eradicate BCSC.We used shRNA genetic screening to identify genes that upon knockdown enhance mammosphere formation in breast cancer cells. By integration of these results with gene expression profiles of mammospheres and NOTCH-activated cells, we identified FOXO3A. Modulation of FOXO3A activity results in a change in mammosphere formation, expression of mammary stem cell markers and breast cancer initiating potential. Importantly, lack of FOXO3A expression in breast cancer patients is associated with increased recurrence rate. Our findings provide evidence for a role for FOXO3A downstream of NOTCH and AKT that may have implications for therapies targeting BCSCs.
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Affiliation(s)
- Linda Smit
- Division of Molecular Carcinogenesis and Cancer Genomics Center Netherlands, The Netherlands Cancer Institute, Plesmanlaan, CX, Amsterdam, The Netherlands.,Department of Hematology, VU University Medical Center, Cancer Center Amsterdam, De Boelelaan, Amsterdam, The Netherlands
| | - Katrien Berns
- Division of Molecular Carcinogenesis and Cancer Genomics Center Netherlands, The Netherlands Cancer Institute, Plesmanlaan, CX, Amsterdam, The Netherlands
| | - Katherine Spence
- Breast Biology Group, Breast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Manchester, UK
| | - W David Ryder
- Department of Medical Statistics, The Christie NHS Trust, Manchester, UK
| | - Nik Zeps
- St John of God Subiaco Hospital, Subiaco, Perth, WA, Australia
| | - Mandy Madiredjo
- Division of Molecular Carcinogenesis and Cancer Genomics Center Netherlands, The Netherlands Cancer Institute, Plesmanlaan, CX, Amsterdam, The Netherlands
| | - Roderick Beijersbergen
- Division of Molecular Carcinogenesis and Cancer Genomics Center Netherlands, The Netherlands Cancer Institute, Plesmanlaan, CX, Amsterdam, The Netherlands
| | - René Bernards
- Division of Molecular Carcinogenesis and Cancer Genomics Center Netherlands, The Netherlands Cancer Institute, Plesmanlaan, CX, Amsterdam, The Netherlands
| | - Robert B Clarke
- Breast Biology Group, Breast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Manchester, UK
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Roy S, Lu K, Nayak MK, Bhuniya A, Ghosh T, Kundu S, Ghosh S, Baral R, Dasgupta PS, Basu S. Activation of D2 Dopamine Receptors in CD133+ve Cancer Stem Cells in Non-small Cell Lung Carcinoma Inhibits Proliferation, Clonogenic Ability, and Invasiveness of These Cells. J Biol Chem 2016; 292:435-445. [PMID: 27920206 DOI: 10.1074/jbc.m116.748970] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 12/03/2016] [Indexed: 12/22/2022] Open
Abstract
Lung carcinoma is the leading cause of cancer-related death worldwide, and among this cancer, non-small cell lung carcinoma (NSCLC) comprises the majority of cases. Furthermore, recurrence and metastasis of NSCLC correlate well with CD133+ve tumor cells, a small population of tumor cells that have been designated as cancer stem cells (CSC). We have demonstrated for the first time high expression of D2 dopamine (DA) receptors in CD133+ve adenocarcinoma NSCLC cells. Also, activation of D2 DA receptors in these cells significantly inhibited their proliferation, clonogenic ability, and invasiveness by suppressing extracellular signal-regulated kinases 1/2 (ERK1/2) and AKT, as well as down-regulation of octamer-binding transcription factor 4 (Oct-4) expression and matrix metalloproteinase-9 (MMP-9) secretion by these cells. These results are of significance as D2 DA agonists that are already in clinical use for treatment of other diseases may be useful in combination with conventional chemotherapy and radiotherapy for better management of NSCLC patients by targeting both tumor cells and stem cell compartments in the tumor mass.
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Affiliation(s)
- Soumyabrata Roy
- From the Department of Immunoregulation and Immunodiagnostics, Chittaranjan National Cancer Institute, Kolkata 700026, India
| | - Kai Lu
- the Department of Pathology, Ohio State University, Columbus, Ohio 43210
| | - Mukti Kant Nayak
- the Division of Virology, National Institute of Cholera and Enteric Diseases, Kolkata 700010, India
| | - Avishek Bhuniya
- From the Department of Immunoregulation and Immunodiagnostics, Chittaranjan National Cancer Institute, Kolkata 700026, India
| | - Tithi Ghosh
- From the Department of Immunoregulation and Immunodiagnostics, Chittaranjan National Cancer Institute, Kolkata 700026, India
| | - Suman Kundu
- the Cancer Biology and Inflammatory Disorder Division, Indian Institute of Chemical Biology, Kolkata 700032, India, and
| | - Sarbari Ghosh
- From the Department of Immunoregulation and Immunodiagnostics, Chittaranjan National Cancer Institute, Kolkata 700026, India
| | - Rathindranath Baral
- From the Department of Immunoregulation and Immunodiagnostics, Chittaranjan National Cancer Institute, Kolkata 700026, India
| | - Partha Sarathi Dasgupta
- From the Department of Immunoregulation and Immunodiagnostics, Chittaranjan National Cancer Institute, Kolkata 700026, India,
| | - Sujit Basu
- the Department of Pathology, Ohio State University, Columbus, Ohio 43210, .,the Division of Medical Oncology, Department of Internal Medicine, Ohio State University, Columbus, Ohio 43210
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Lee JH, Kim JY, Kim SY, Choi SI, Kim KC, Cho EW, Kim IG. APBB1 reinforces cancer stem cell and epithelial-to-mesenchymal transition by regulating the IGF1R signaling pathway in non-small-cell lung cancer cells. Biochem Biophys Res Commun 2016; 482:35-42. [PMID: 27836546 DOI: 10.1016/j.bbrc.2016.11.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 11/07/2016] [Indexed: 01/16/2023]
Abstract
Amyloid β precursor protein binding family B member 1(APBB1) was first identified as a binding partner of amyloid precursor protein during brain development, but its function in the context of cancer remain unclear. Here we show for the first time that APBB1 is partly associated with intensifying cancer stem cell(CSC) and epithelial-to-mesenchymal transition (EMT) and enhancing radiation-resistant properties of lung cancer cells. We found that APBB1 was highly expressed in ALDH1high CSC-like cells sorted from A549 lung cancer cells. In APBB1-deficient H460 cells with forced overexpression of APBB1, the protein directly interacted with IGF1Rβ, enhanced phosphorylation of IGF1Rβ/PI3K/AKT pathway(activation) and subsequently induced the phosphorylation of GSK3β(inactivation). This phosphorylation stabilized Snail1, a negative regulator of E-cadherin expression, and regulated β-catenin-mediated ALDH1 expression, which are representative markers for EMT and CSCs, respectively. In contrast, suppression of APBB1 expression with siRNA yielded the opposite effects in APBB1-rich A549 cells. We concluded that APBB1 partly regulates the expression of ALDH1. We also found that APBB1 regulates activation of nuclear factor-κB, which is involved in reducing various stresses including oxidative stress, which suggests that APBB1 is associated with γ-radiation sensitivity. Our findings imply that APBB1 plays an important role in the maintenance of EMT-associated CSC-like properties and γ-radiation resistance via activation of IGF1Rβ/AKT/GSK3β pathway in lung cancer cells, highlighting APBB1 as a potential target for therapeutic cancer treatment.
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Affiliation(s)
- Jei Ha Lee
- Department of Radiation Biology, Environmental Radiation Research Group, Korea Atomic Energy Research Institute, 111, Daedeok-Daero 989 Beon-Gil, Yuseong-Gu, Daejeon, South Korea; Department of Radiation Biotechnology and Applied Radioisotope, Korea University of Science and Technology (UST), 989-111 Daedeok-Daero, Yuseong-Gu, Daejeon 305-353, South Korea
| | - Jung Yul Kim
- Department of Radiation Biology, Environmental Radiation Research Group, Korea Atomic Energy Research Institute, 111, Daedeok-Daero 989 Beon-Gil, Yuseong-Gu, Daejeon, South Korea; Department of Radiation Biotechnology and Applied Radioisotope, Korea University of Science and Technology (UST), 989-111 Daedeok-Daero, Yuseong-Gu, Daejeon 305-353, South Korea
| | - Seo Yeon Kim
- Department of Radiation Biology, Environmental Radiation Research Group, Korea Atomic Energy Research Institute, 111, Daedeok-Daero 989 Beon-Gil, Yuseong-Gu, Daejeon, South Korea
| | - Soo Im Choi
- Department of Radiation Biology, Environmental Radiation Research Group, Korea Atomic Energy Research Institute, 111, Daedeok-Daero 989 Beon-Gil, Yuseong-Gu, Daejeon, South Korea
| | - Kuk Chan Kim
- Department of Radiation Biology, Environmental Radiation Research Group, Korea Atomic Energy Research Institute, 111, Daedeok-Daero 989 Beon-Gil, Yuseong-Gu, Daejeon, South Korea
| | - Eun Wie Cho
- Rare Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, 25 Gwahak-ro, Yuseong-gu, Daejeon 34141, South Korea
| | - In Gyu Kim
- Department of Radiation Biology, Environmental Radiation Research Group, Korea Atomic Energy Research Institute, 111, Daedeok-Daero 989 Beon-Gil, Yuseong-Gu, Daejeon, South Korea; Department of Radiation Biotechnology and Applied Radioisotope, Korea University of Science and Technology (UST), 989-111 Daedeok-Daero, Yuseong-Gu, Daejeon 305-353, South Korea.
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240
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Pal D, Kolluru V, Chandrasekaran B, Baby BV, Aman M, Suman S, Sirimulla S, Sanders MA, Alatassi H, Ankem MK, Damodaran C. Targeting aberrant expression of Notch-1 in ALDH + cancer stem cells in breast cancer. Mol Carcinog 2016; 56:1127-1136. [PMID: 27753148 DOI: 10.1002/mc.22579] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 08/25/2016] [Accepted: 10/12/2016] [Indexed: 12/20/2022]
Abstract
We have previously reported that high aldehyde dehydrogenase (ALDH) enzyme activity in breast cancer cells results in breast cancer stem cell (BCSC) properties by upregualting Notch-1 and epithelial mesenchymal markers. This results in chemoresistance in breast cancer. Here, we examined the functional and clinical significance of ALDH expression by measuring the ALDH levels in breast cancer tissues by immunohistochemistry. There was a significantly higher ALDH expression in higher grade breast cancer tumor tissues (Grade- II and III) versus normal breast tissues. Injection of BCSC (ALDH+ and CD44+ /CD22- ) cells resulted in aggressive tumor growth in athymic mice versus ALDH- cells. The ALDH+ and CD44+ /CD22- tumors grow rapidly and are larger than ALDH- tumors which were slow growing and smaller. Molecularly, ALDH+ tumors expressed higher expression of Notch-1 and EMT markers than ALDH- tumors. Oral administration of the naturally occurring Psoralidin (Pso, 25 mg/kg of body weight) significantly inhibited the growth in ALDH+ and ALDH- tumors as well. Psoralidin inhibited Notch-1 mediated EMT activation in ALDH+ and ALDH- tumors-this confirms our in vitro findings. Our results suggest that Notch-1 could be an attractive target and inhibition of Notch-1 by Psoralidin may prevent pathogenesis of breast cancer as well as metastasis. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Deeksha Pal
- Department of Urology, University of Louisville, Kentucky
| | | | | | - Becca V Baby
- Department of Urology, University of Louisville, Kentucky
| | - Masarath Aman
- Department of Urology, University of Louisville, Kentucky
| | - Suman Suman
- Department of Urology, University of Louisville, Kentucky
| | | | | | - Houda Alatassi
- Department of Pathology, University of Louisville, Kentucky
| | - Murali K Ankem
- Department of Urology, University of Louisville, Kentucky
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Antiangiogenic therapy using endostatin increases the number of ALDH+ lung cancer stem cells by generating intratumor hypoxia. Sci Rep 2016; 6:34239. [PMID: 27703219 PMCID: PMC5050420 DOI: 10.1038/srep34239] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 09/09/2016] [Indexed: 02/05/2023] Open
Abstract
Antiangiogenic therapy is becoming a promising option for cancer treatment. However, many investigations have recently indicated that these therapies may have limited efficacy, and the cancers in most patients eventually develop resistance to these therapies. There is considerable recently acquired evidence for an association of such resistance with cancer stem-like cells (CSLCs). Here, we used xenograft tumor murine models to further suggest that antiangiogenic agents actually increase the invasive and metastatic properties of lung cancer cells. In our experiments with murine lung cancer xenografts, we found that the antiangiogenic agent endostatin increased the population of ALDH+ cells, and did so by generating intratumoral hypoxia in the xenografts. We further showed endostatin to cause an increase in the CSLC population by accelerating the generation of tumor hypoxia and by recruiting TAMs, MDSCs and Treg cells, which are inflammatory and immunosuppressive cells and which can secrete cytokines and growth factors such as IL-6, EGF, and TGF-β into the tumor microenvironment. All these factors are related with increased CSLC population in tumors. These results imply that improving the clinical efficacy of antiangiogenic treatments will require the concurrent use of CSLC-targeting agents.
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242
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Hu Y, Yu X, Xu G, Liu S. Metastasis: an early event in cancer progression. J Cancer Res Clin Oncol 2016; 143:745-757. [DOI: 10.1007/s00432-016-2279-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 09/22/2016] [Indexed: 01/15/2023]
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243
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Mansour SF, Atwa MM. Clinicopathological Significance of CD133 and ALDH1 Cancer Stem Cell Marker Expression in Invasive Ductal Breast Carcinoma. Asian Pac J Cancer Prev 2016; 16:7491-6. [PMID: 26625750 DOI: 10.7314/apjcp.2015.16.17.7491] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Biomarkers in breast neoplasms provide invaluable information regarding prognosis and help determining the optimal treatment. We investigated the possible correlation between cancer stem cell (CSC) markers (CD133, and ALDH1) in invasive ductal breast carcinomas with some clinicopathological parameters. AIM To assess the correlation between expression of cancer stem cell (CSC) markers (CD133, and ALDH1) and clinicopathological parameters of invasive ductal breast carcinomas. MATERIALS AND METHODS Immunohistochemical analysis of CD133 and ALDH1 was performed on a series of 120 modified radical mastectomy (MRM) specimens diagnosed as invasive ductal breast carcinoma. RESULTS Expression of both CD133 and ALDH1 was significantly changed and related to tumor size, tumor stage (TNM), and lymph node metastasis. A negative correlation between CD133 and ALDH1 was found. CONCLUSIONS Detecting the expression of CD133 and ALDH1 in invasive ductal breast carcinomas may be of help in more accurately predicting the aggressive properties and determining the optimal treatment.
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Affiliation(s)
- Sahar F Mansour
- Pathology Department, Faculty of Medicine, Suez Canal University, Ismailia, Egypt E-mail :
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244
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Wang X, Wang C, Zhang X, Hua R, Gan L, Huang M, Zhao L, Ni S, Guo W. Bmi-1 regulates stem cell-like properties of gastric cancer cells via modulating miRNAs. J Hematol Oncol 2016; 9:90. [PMID: 27644439 PMCID: PMC5029045 DOI: 10.1186/s13045-016-0323-9] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 09/09/2016] [Indexed: 12/18/2022] Open
Abstract
Background B cell-specific Moloney murine leukemia virus integration site 1 (Bmi-1) plays an important role in regulating stemness in some kinds of cancer. However, the mechanisms remain unclear. This study was to investigate whether and how Bmi-1 regulates stemness of gastric cancer. Methods We firstly explored the role of Bmi-1 in regulating stem cell-like features in gastric cancer. Secondly, we screened out its downstream miRNAs and clarified whether these miRNAs are involved in the regulation of stemness. Finally, we investigated the mechanisms how Bmi-1 regulates miRNAs. Results Bmi-1 positively regulates stem cell-like properties of gastric cancer and upregulates miR-21 and miR-34a. There was a positive correlation between Bmi-1 and miR-21 expression in gastric cancer tissues. MiR-21 mediated the function of Bmi-1 in regulating stem cell-like properties, while miR-34a negatively regulates stem cell-like characteristics via downregulating Bmi-1. Bmi-1 binds to PTEN promoter and directly inhibits PTEN and thereafter activates AKT. Bmi-1 also regulates p53 and PTEN via miR-21. Bmi-1 activated NF-kB via AKT and enhanced the binding of NF-kB to the promoter of miR-21 and miR-34a and increased their expression. Conclusions Bmi-1 positively regulates stem cell-like properties via upregulating miR-21, and miR-34a negatively regulates stem cell-like characteristics by negative feedback regulation of Bmi-1 in gastric cancer. Bmi-1 upregulates miR-21 and miR-34a by activating AKT-NF-kB pathway. Electronic supplementary material The online version of this article (doi:10.1186/s13045-016-0323-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xiaofeng Wang
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Chang Wang
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xiaowei Zhang
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Ruixi Hua
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Lu Gan
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Mingzhu Huang
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Liqin Zhao
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Sujie Ni
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Weijian Guo
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China. .,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
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245
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Dandawate PR, Subramaniam D, Jensen RA, Anant S. Targeting cancer stem cells and signaling pathways by phytochemicals: Novel approach for breast cancer therapy. Semin Cancer Biol 2016; 40-41:192-208. [PMID: 27609747 DOI: 10.1016/j.semcancer.2016.09.001] [Citation(s) in RCA: 204] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 09/01/2016] [Accepted: 09/03/2016] [Indexed: 02/07/2023]
Abstract
Breast cancer is the most common form of cancer diagnosed in women worldwide and the second leading cause of cancer-related deaths in the USA. Despite the development of newer diagnostic methods, selective as well as targeted chemotherapies and their combinations, surgery, hormonal therapy, radiotherapy, breast cancer recurrence, metastasis and drug resistance are still the major problems for breast cancer. Emerging evidence suggest the existence of cancer stem cells (CSCs), a population of cells with the capacity to self-renew, differentiate and be capable of initiating and sustaining tumor growth. In addition, CSCs are believed to be responsible for cancer recurrence, anticancer drug resistance, and metastasis. Hence, compounds targeting breast CSCs may be better therapeutic agents for treating breast cancer and control recurrence and metastasis. Naturally occurring compounds, mainly phytochemicals have gained immense attention in recent times because of their wide safety profile, ability to target heterogeneous populations of cancer cells as well as CSCs, and their key signaling pathways. Therefore, in the present review article, we summarize our current understanding of breast CSCs and their signaling pathways, and the phytochemicals that affect these cells including curcumin, resveratrol, tea polyphenols (epigallocatechin-3-gallate, epigallocatechin), sulforaphane, genistein, indole-3-carbinol, 3, 3'-di-indolylmethane, vitamin E, retinoic acid, quercetin, parthenolide, triptolide, 6-shogaol, pterostilbene, isoliquiritigenin, celastrol, and koenimbin. These phytochemicals may serve as novel therapeutic agents for breast cancer treatment and future leads for drug development.
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Affiliation(s)
- Prasad R Dandawate
- Department of Surgery, The University of Kansas Medical Center, Kansas City, KS 66160, USA; Department of Molecular and Integrative Physiology, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Dharmalingam Subramaniam
- Department of Surgery, The University of Kansas Medical Center, Kansas City, KS 66160, USA; Department of Molecular and Integrative Physiology, The University of Kansas Medical Center, Kansas City, KS 66160, USA; The University of Kansas Cancer Center, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Roy A Jensen
- Department of Pathology and Laboratory Medicine, The University of Kansas Medical Center, Kansas City, KS 66160, USA; The University of Kansas Cancer Center, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Shrikant Anant
- Department of Surgery, The University of Kansas Medical Center, Kansas City, KS 66160, USA; Department of Molecular and Integrative Physiology, The University of Kansas Medical Center, Kansas City, KS 66160, USA; The University of Kansas Cancer Center, The University of Kansas Medical Center, Kansas City, KS 66160, USA.
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246
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Different Biological Action of Oleic Acid in ALDHhigh and ALDHlow Subpopulations Separated from Ductal Carcinoma In Situ of Breast Cancer. PLoS One 2016; 11:e0160835. [PMID: 27589390 PMCID: PMC5010246 DOI: 10.1371/journal.pone.0160835] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 07/26/2016] [Indexed: 12/24/2022] Open
Abstract
The mechanisms underlying breast cancer progression of ductal carcinoma in situ (DCIS) associated with fatty acids are largely unknown. In the present study, we compared the action of oleic acid (OA) on two human DCIS cell lines, MCF10DCIS.COM (ER/PR/HER2-negative) and SUM225 (HER2 overexpressed). OA led to a significant increase in proliferation, migration, lipid accumulation and the expression of lipogenic proteins, such as SREBP-1, FAS and ACC-1, in MCF10DCIS.COM cells but not SUM225 cells. The ALDHhigh subpopulation analyzed by the ALDEFLUOR assay was approximately 39.2±5.3% of MCF10DCIS.COM cells but was small (3.11±0.9%) in SUM225 cells. We further investigated the different biological action of OA in the distinct ALDHlow and ALDHhigh subpopulations of MCF10DCIS.COM cells. OA led to an increase in the expression of ALDH1A1, ALDH1A2 and ALDH1A3 in MCF10DCIS.COM cells. SREBP-1 and ACC-1 were highly expressed in ALDHhigh cells relative to ALDHlow cells, whereas FAS was higher in ALDHlow cells. In the presence of OA, ALDHhigh cells were more likely to proliferate and migrate and displayed significantly high levels of SREBP-1 and FAS and strong phosphorylation of FAK and AKT relative to ALDHlow cells. This study suggests that OA could be a critical risk factor to promote the proliferation and migration of ALDHhigh cells in DCIS, leading to breast cancer progression.
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247
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Stromal expression of ALDH1 in human breast carcinomas indicates reduced tumor progression. Oncotarget 2016; 6:26789-803. [PMID: 26305673 PMCID: PMC4694953 DOI: 10.18632/oncotarget.4628] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 07/06/2015] [Indexed: 12/25/2022] Open
Abstract
Interactions between cancer cells and microenvironment are emerging issue in tumor progression. Aldehyde dehydrogenase 1 (ALDH1) is a recognized cancer stem cell marker but little is known about its role in intratumoral stroma. Therefore, we focused on ALDH1 expression in tumor-associated stroma of breast carcinomas (BrCa). Stromal and tumoral ALDH1 expression was evaluated immunohistochemically in BrCa and their lymph node metastases (LNMs), and related to clinico-pathological characteristics, patients’ outcome, presence of CD68, HLADR, retinoic acid (RA) in stroma, and selected proteins in tumor cells. ALDH1(+) stromal cells were detected in 53% of 374 BrCa and 61% of 102 LNMs. ALDH1(+) stroma in primary tumor correlated to longer disease-free (p = 0.030), metastasis-free (p = 0.024), and overall survival (p = 0.043) having an independent prognostic impact on DFS (multivariate analysis, p = 0.047). It was associated with concomitant presence of HLA-DR(+) stromal cells and RA in tumor cells (both p < 0.001), and inversely associated with vimentin expression in tumor cells (p = 0.036). ALDH1(+) stroma in LNMs correlated inversely to presence of disseminated tumor cells in patients’ bone marrow (p = 0.014) and was independent prognosticator of shorter DFS and MFS (multivariate analysis, p = 0.004 and p = 0.002, respectively). In conclusion, ALDH1 expression in tumor-associated stromal cells indicates reduced BrCa progression, possibly via RA secretion.
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248
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Bleau AM, Zandueta C, Redrado M, Martínez-Canarias S, Larzábal L, Montuenga LM, Calvo A, Lecanda F. Sphere-derived tumor cells exhibit impaired metastasis by a host-mediated quiescent phenotype. Oncotarget 2016; 6:27288-303. [PMID: 26318423 PMCID: PMC4694990 DOI: 10.18632/oncotarget.4803] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 07/27/2015] [Indexed: 12/18/2022] Open
Abstract
The spread of lung cancer cells to distant sites represents a common event associated with poor prognosis. A fraction of tumor cells named cancer stem cells (CSCs) have the ability to overcome therapeutic stress and remain quiescent. However, whether these CSCs have also the capacity to initiate and sustain metastasis remains unclear. Here, we used tumor sphere cultures (TSC) isolated from mouse and human lung cancer models to enrich for CSCs, and assessed their metastatic potential as compared to non-CSCs. As expected, TSC overexpressed a variety of stem cell markers and displayed chemoresistance. The CSC phenotype of TSC was confirmed by their higher growth ability in soft agar and tumorigenic potential in vivo, despite their reduced in vitro cell growth kinetics. Surprisingly, the appearance of spontaneous lung metastases was strongly delayed in mice injected with TSC as compared to non-TSC cells. Similarly, this finding was confirmed in several other models of metastasis, an effect associated with a retarded colonization activity. Interestingly, such delay correlated with a quiescent phenotype whose underlined mechanisms included an increase in p27 protein and lower phospho-ERK1/2 levels. Thus, these data suggest that cells enriched for CSC properties display an impaired metastatic activity, a finding with potential clinical implications.
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Affiliation(s)
- Anne-Marie Bleau
- Program in Solid Tumors and Biomarkers, Division of Oncology, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| | - Carolina Zandueta
- Program in Solid Tumors and Biomarkers, Division of Oncology, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| | - Miriam Redrado
- Program in Solid Tumors and Biomarkers, Division of Oncology, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| | - Susana Martínez-Canarias
- Program in Solid Tumors and Biomarkers, Division of Oncology, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| | - Leyre Larzábal
- Program in Solid Tumors and Biomarkers, Division of Oncology, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
| | - Luis M Montuenga
- Program in Solid Tumors and Biomarkers, Division of Oncology, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain.,Department of Histology and Pathology, School of Medicine, University of Navarra, Pamplona, Spain.,IdiSNA, Navarra Institute for Health Research, Pamplona, Spain
| | - Alfonso Calvo
- Program in Solid Tumors and Biomarkers, Division of Oncology, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain.,Department of Histology and Pathology, School of Medicine, University of Navarra, Pamplona, Spain.,IdiSNA, Navarra Institute for Health Research, Pamplona, Spain
| | - Fernando Lecanda
- Program in Solid Tumors and Biomarkers, Division of Oncology, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain.,Department of Histology and Pathology, School of Medicine, University of Navarra, Pamplona, Spain.,IdiSNA, Navarra Institute for Health Research, Pamplona, Spain
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249
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Habib JG, O'Shaughnessy JA. The hedgehog pathway in triple-negative breast cancer. Cancer Med 2016; 5:2989-3006. [PMID: 27539549 PMCID: PMC5083752 DOI: 10.1002/cam4.833] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 05/26/2016] [Accepted: 06/30/2016] [Indexed: 12/11/2022] Open
Abstract
Treatment of triple‐negative breast cancer (TNBC) remains challenging due to the underlying heterogeneity of this disease coupled with the lack of predictive biomarkers and effective targeted therapies. Intratumoral heterogeneity, particularly enrichment for breast cancer stem cell‐like subpopulations, has emerged as a leading hypothesis for systemic therapy resistance and clinically aggressive course of poor prognosis TNBC. A growing body of literature supports the role of the stem cell renewal Hedgehog (Hh) pathway in breast cancer. Emerging preclinical data also implicate Hh signaling in TNBC pathogenesis. Herein, we review the evidence for a pathophysiologic role of Hh signaling in TNBC and explore mechanisms of crosstalk between the Hh pathway and other key signaling networks as well as their potential implications for Hh‐targeted interventions in TNBC.
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Affiliation(s)
- Joyce G Habib
- Baylor Charles A. Sammons Cancer Center, Dallas, Texas
| | - Joyce A O'Shaughnessy
- Baylor Charles A. Sammons Cancer Center, Dallas, Texas.
- Texas Oncology, Dallas, Texas.
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250
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Farnie G, Sotgia F, Lisanti MP. High mitochondrial mass identifies a sub-population of stem-like cancer cells that are chemo-resistant. Oncotarget 2016; 6:30472-86. [PMID: 26421710 PMCID: PMC4741545 DOI: 10.18632/oncotarget.5401] [Citation(s) in RCA: 157] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 09/17/2015] [Indexed: 12/15/2022] Open
Abstract
Chemo-resistance is a clinical barrier to more effective anti-cancer therapy. In this context, cancer stem-like cells (CSCs) are thought to be chemo-resistant, resulting in tumor recurrence and distant metastasis. Our hypothesis is that chemo-resistance in CSCs is driven, in part, by enhanced mitochondrial function. Here, we used breast cell lines and metastatic breast cancer patient samples to begin to dissect the role of mitochondrial metabolism in conferring the CSC phenotype. More specifically, we employed fluorescent staining with MitoTracker (MT) to metabolically fractionate these cell lines into mito-high and mito-low sub-populations, by flow-cytometry. Interestingly, cells with high mitochondrial mass (mito-high) were specifically enriched in a number of known CSC markers, such as aldehyde dehydrogenase (ALDH) activity, and they were ESA+/CD24-/low and formed mammospheres with higher efficiency. Large cell size is another independent characteristic of the stem cell phenotype; here, we observed a >2-fold increase in mitochondrial mass in large cells (>12-μm), relative to the smaller cell population (4–8-μm). Moreover, the mito-high cell population showed a 2.4-fold enrichment in tumor-initiating cell activity, based on limiting dilution assays in murine xenografts. Importantly, primary human breast CSCs isolated from patients with metastatic breast cancer or a patient derived xenograft (PDX) also showed the co-enrichment of ALDH activity and mitochondrial mass. Most significantly, our investigations demonstrated that mito-high cells were resistant to paclitaxel, resulting in little or no DNA damage, as measured using the comet assay. In summary, increased mitochondrial mass in a sub-population of breast cancer cells confers a stem-like phenotype and chemo-resistance. As such, our current findings have important clinical implications for over-coming drug resistance, by therapeutically targeting the mito-high CSC population.
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Affiliation(s)
- Gillian Farnie
- Cancer Stem Cell Research, Institute of Cancer Sciences, University of Manchester, Manchester, UK
| | - Federica Sotgia
- The Breast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Manchester, UK.,The Manchester Centre for Cellular Metabolism (MCCM), Institute of Cancer Sciences, University of Manchester, Manchester, UK
| | - Michael P Lisanti
- The Breast Cancer Now Research Unit, Institute of Cancer Sciences, University of Manchester, Manchester, UK.,The Manchester Centre for Cellular Metabolism (MCCM), Institute of Cancer Sciences, University of Manchester, Manchester, UK
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