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Li Z, Belitzky E, Blaha O, Cavaliere A, Katz SR, Aboian M, Melegari L, Rajabimoghadam K, Kurpiewski S, Zhu X, Marquez-Nostra B. ImmunoPET Imaging Identifies the Optimal Timepoint for Combination Therapy in Xenograft Models of Triple-Negative Breast Cancer. Cancers (Basel) 2023; 15:1589. [PMID: 36900378 PMCID: PMC10001369 DOI: 10.3390/cancers15051589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 02/24/2023] [Accepted: 02/26/2023] [Indexed: 03/08/2023] Open
Abstract
(1) Purpose: The glycoprotein non-metastatic melanoma B (gpNMB) is a type 1 transmembrane protein that is overexpressed in numerous cancers, including triple-negative breast cancer (TNBC). Its overexpression is associated with lower overall survival of patients with TNBC. Tyrosine kinase inhibitors such as dasatinib can upregulate gpNMB expression, which has the potential to enhance therapeutic targeting with anti-gpNMB antibody drug conjugates such as glembatumumab vedotin (CDX-011). Our primary aim is to quantify the degree and identify the timeframe of gpNMB upregulation in xenograft models of TNBC after treatment with the Src tyrosine kinase inhibitor, dasatinib, by longitudinal positron emission tomography (PET) imaging with the 89Zr-labeled anti-gpNMB antibody ([89Zr]Zr-DFO-CR011). The goal is to identify the timepoint at which to administer CDX-011 after treatment with dasatinib to enhance therapeutic efficacy using noninvasive imaging. (2) Methods: First, TNBC cell lines that either express gpNMB (MDA-MB-468) or do not express gpNMB (MDA-MB-231) were treated with 2 μM of dasatinib in vitro for 48 h, followed by Western blot analysis of cell lysates to determine differences in gpNMB expression. MDA-MB-468 xenografted mice were also treated with 10 mg/kg of dasatinib every other day for 21 days. Subgroups of mice were euthanized at 0-, 7-, 14-, and 21-days post treatment, and tumors were harvested for Western blot analysis of tumor cell lysates for gpNMB expression. In a different cohort of MDA-MB-468 xenograft models, longitudinal PET imaging with [89Zr]Zr-DFO-CR011 was performed before treatment at 0 (baseline) and at 14 and 28 days after treatment with (1) dasatinib alone (2) CDX-011 (10 mg/kg) alone, or (3) sequential treatment of dasatinib for 14 days then CDX-011 to determine changes in gpNMB expression in vivo relative to baseline. As a gpNMB-negative control, MDA-MB-231 xenograft models were imaged 21 days after treatment with dasatinib, combination of CDX-011 and dasatinib, and vehicle control. (3) Results: Western blot analysis of MDA-MB-468 cell and tumor lysates showed that dasatinib increased expression of gpNMB in vitro and in vivo at 14 days post treatment initiation. In PET imaging studies of different cohorts of MDA-MB-468 xenografted mice, [89Zr]Zr-DFO-CR011 uptake in tumors (SUVmean = 3.2 ± 0.3) was greatest at 14 days after treatment initiation with dasatinib (SUVmean = 4.9 ± 0.6) or combination of dasatinib and CDX-011 (SUVmean= 4.6 ± 0.2) compared with that at baseline (SUVmean = 3.2 ± 0.3). The highest tumor regression after treatment was observed in the combination-treated group with a percent change in tumor volume relative to baseline (%CTV) of -54 ± 13 compared with the vehicle control-treated group (%CTV = +102 ± 27), CDX-011 group (%CTV = -25 ± 9.8), and dasatinib group (%CTV = -23 ± 11). In contrast, the PET imaging of MDA-MB-231 xenografted mice indicated no significant difference in the tumor uptake of [89Zr]Zr-DFO-CR011 between treated (dasatinib alone or in combination with CDX-011) and vehicle-control groups. (4) Conclusions: Dasatinib upregulated gpNMB expression in gpNMB-positive MDA-MB-468 xenografted tumors at 14 days post treatment initiation, which can be quantified by PET imaging with [89Zr]Zr-DFO-CR011. Furthermore, combination therapy with dasatinib and CDX-011 appears to be a promising therapeutic strategy for TNBC and warrants further investigation.
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Affiliation(s)
- Ziqi Li
- Department of Nuclear Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA
| | - Erika Belitzky
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA
| | - Ondrej Blaha
- Yale Center for Analytical Sciences, Yale School of Public Health, Yale University, New Haven, CT 06520, USA
| | - Alessandra Cavaliere
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA
| | - Samantha R. Katz
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA
| | - Mariam Aboian
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA
| | - Lindy Melegari
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA
| | | | - Stephen Kurpiewski
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA
| | - Xiaohua Zhu
- Department of Nuclear Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Bernadette Marquez-Nostra
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT 06520, USA
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL 35233, USA
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Wu K, Rodrigues L, Post G, Harvey G, White M, Miller A, Lambert L, Lewis B, Lopes C, Zou J. Analyses of canine cancer mutations and treatment outcomes using real-world clinico-genomics data of 2119 dogs. NPJ Precis Oncol 2023; 7:8. [PMID: 36658200 PMCID: PMC9852553 DOI: 10.1038/s41698-023-00346-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 01/05/2023] [Indexed: 01/21/2023] Open
Abstract
Spontaneous tumors in canines share significant genetic and histological similarities with human tumors, positioning them as valuable models to guide drug development. However, current translational studies have limited real world evidence as cancer outcomes are dispersed across veterinary clinics and genomic tests are rarely performed on dogs. In this study, we aim to expand the value of canine models by systematically characterizing genetic mutations in tumors and their response to targeted treatments. In total, we collect and analyze survival outcomes for 2119 tumor-bearing dogs and the prognostic effect of genomic alterations in a subset of 1108 dogs. Our analysis identifies prognostic concordance between canines and humans in several key oncogenes, including TP53 and PIK3CA. We also find that several targeted treatments designed for humans are associated with a positive prognosis when used to treat canine tumors with specific genomic alterations, underscoring the value of canine models in advancing drug discovery for personalized oncology.
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Affiliation(s)
- Kevin Wu
- One Health Company, Palo Alto, CA US ,grid.168010.e0000000419368956Department of Biomedical Data Science, Stanford University, Stanford, US
| | | | | | | | | | | | | | | | | | - James Zou
- One Health Company, Palo Alto, CA US ,grid.168010.e0000000419368956Department of Biomedical Data Science, Stanford University, Stanford, US
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Tyrosine kinase SRC-induced YAP1-KLF5 module regulates cancer stemness and metastasis in triple-negative breast cancer. Cell Mol Life Sci 2023; 80:41. [PMID: 36633714 PMCID: PMC9837006 DOI: 10.1007/s00018-023-04688-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 12/06/2022] [Accepted: 01/03/2023] [Indexed: 01/13/2023]
Abstract
SRC is the first identified oncogene, and its aberrant activation has been implicated as a driving event in tumor initiation and progression. However, its role in cancer stemness regulation and the underlying regulatory mechanism are still elusive. Here, we identified a YAP1 tyrosine phosphorylation-dependent YAP1-KLF5 oncogenic module, as the key downstream mediator of SRC kinase regulating cancer stemness and metastasis in triple-negative breast cancer (TNBC). SRC was overexpressed in TNBC patient tissues and its expression level was highly correlated with the tumor malignancy. SRC activation induced, while inhibition of SRC kinase reduced the cancer stemness, tumor cell growth and metastasis in vitro and in vivo. Transcriptomic and proteomic analysis revealed that SRC-mediated YAP1 tyrosine phosphorylation induced its interaction with Kruppel-like factor 5 (KLF5) to form a YAP1/TEAD-KLF5 complex in TNBC cells. YAP1-KLF5 association further promoted TEAD-mediated transcriptional program independently of canonical Hippo kinases, which eventually gave rise to the enhanced cancer stemness and metastasis. Disruption of YAP1-KLF5 module in TNBC cells dramatically attenuated the SRC-induced cancer stemness and metastasis in vitro and in vivo. Accordingly, co-upregulations of SRC and YAP1-KLF5 module in TNBC tissues were significantly positively correlated with the tumor malignance. Altogether, our work presents a novel tyrosine phosphorylation-dependent YAP1-KLF5 oncogenic module governing SRC-induced cancer stemness and metastasis in TNBC. Therefore, targeting YAP1/KLF5-mediated transcription may provide a promising strategy for TNBC treatment with SRC aberrantly activation.
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Normann LS, Haugen MH, Hongisto V, Aure MR, Leivonen SK, Kristensen VN, Tahiri A, Engebraaten O, Sahlberg KK, Mælandsmo GM. High-throughput screen in vitro identifies dasatinib as a candidate for combinatorial treatment with HER2-targeting drugs in breast cancer. PLoS One 2023; 18:e0280507. [PMID: 36706086 PMCID: PMC9882887 DOI: 10.1371/journal.pone.0280507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 01/02/2023] [Indexed: 01/28/2023] Open
Abstract
Human epidermal growth factor receptor 2-positive (HER2+) breast cancer is an aggressive subtype of this disease. Targeted treatment has improved outcome, but there is still a need for new therapeutic strategies as some patients respond poorly to treatment. Our aim was to identify compounds that substantially affect viability in HER2+ breast cancer cells in response to combinatorial treatment. We performed a high-throughput drug screen of 278 compounds in combination with trastuzumab and lapatinib using two HER2+ breast cancer cell lines (KPL4 and SUM190PT). The most promising drugs were validated in vitro and in vivo, and downstream molecular changes of the treatments were analyzed. The screen revealed multiple drugs that could be used in combination with lapatinib and/or trastuzumab. The Src-inhibitor dasatinib showed the largest combinatorial effect together with lapatinib in the KPL4 cell line compared to treatment with dasatinib alone (p < 0.01). In vivo, only lapatinib significantly reduced tumor growth (p < 0.05), whereas dasatinib alone, or in combination with lapatinib, did not show significant effects. Protein analyses of the treated xenografts showed significant alterations in protein levels compared to untreated controls, suggesting that all drugs reached the tumor and exerted a measurable effect. In silico analyses suggested activation of apoptosis and reduced activity of survival pathways by all treatments, but the opposite pattern was observed for the combinatorial treatment compared to lapatinib alone.
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Affiliation(s)
- Lisa Svartdal Normann
- Department of Research and Innovation, Vestre Viken Hospital Trust, Drammen, Norway
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
- Department of Medical Genetics, Institute of Clinical Medicine, Faculty of Medicine, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Mads Haugland Haugen
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Vesa Hongisto
- Division of Toxicology, Misvik Biology, Turku, Finland
| | - Miriam Ragle Aure
- Department of Medical Genetics, Institute of Clinical Medicine, Faculty of Medicine, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Suvi-Katri Leivonen
- Applied Tumor Genomics Research Program, Medical Faculty, University of Helsinki, Helsinki, Finland
| | - Vessela N. Kristensen
- Department of Medical Genetics, Institute of Clinical Medicine, Faculty of Medicine, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Andliena Tahiri
- Department of Research and Innovation, Vestre Viken Hospital Trust, Drammen, Norway
| | - Olav Engebraaten
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
- Department of Oncology, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Kristine Kleivi Sahlberg
- Department of Research and Innovation, Vestre Viken Hospital Trust, Drammen, Norway
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
- * E-mail:
| | - Gunhild Mari Mælandsmo
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
- Institute for Medical Biology, Faculty of Health Sciences, UiT–The Arctic University of Norway, Tromsø, Norway
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Hou J, Chen Q, Huang Y, Wu Z, Ma D. Caudatin blocks the proliferation, stemness and glycolysis of non-small cell lung cancer cells through the Raf/MEK/ERK pathway. PHARMACEUTICAL BIOLOGY 2022; 60:764-773. [PMID: 35387566 PMCID: PMC9004493 DOI: 10.1080/13880209.2022.2050768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
CONTEXT The antitumor effects of caudatin have been explored in multiple cancers, but the research on lung cancer has not been fully understood. OBJECTIVE We explored the effects of caudatin on non-small cell lung cancer (NSCLC) in vitro and in vivo. MATERIALS AND METHODS In the in vitro experiments, 0, 25, 50 and 100 μM of caudatin were selected to examine the effects on stemness and glycolysis. Subcutaneous tumour xenografts were constructed by injecting the nude mice (BALB/C) with 5 × 106 H1299 cells. In the in vivo experiments, all nude mice were divided into the caudatin group (50 mg/kg/day, n = 5) and the sham group (equal amount of DMSO, n = 5). RESULTS The IC50 of caudatin for H1299 and H520 cells was 44.68 μM and 69.37 μM, respectively. Compared with caudatin 0 μM group, cell apoptosis rate was increased about 10 times and cell stemness was decreased by 75-85% in caudatin 100 μM group. Glucose uptake (65-80% reduction), lactic acid production (75-80% reduction), ATP level (70-80% reduction) and the expression of HK2 and LDHA (75-85% reduction) were decreased in caudatin 100 μM group. The expression of Raf/MEK/ERK pathway related proteins was decreased to 20-25% by caudatin. Tumour weight (about 70% reduction) and the expression of stemness, glycolysis and Raf/MEK/ERK pathway related proteins (about 50-75% reduction) were suppressed by caudatin in vivo. DISCUSSION AND CONCLUSIONS We revealed that caudatin blocked stemness and glycolysis in NSCLC for the first time. More experiments about exact dosage of caudatin in vivo should be conducted.
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Affiliation(s)
- Juan Hou
- Department of Oncology, Jingjiang People’s Hospital, Taizhou, Jiangsu, China
| | - Qing Chen
- Department of Oncology, Jingjiang People’s Hospital, Taizhou, Jiangsu, China
| | - Yufeng Huang
- Department of Oncology, Jingjiang People’s Hospital, Taizhou, Jiangsu, China
| | - Zhiwei Wu
- Department of Oncology, Jingjiang People’s Hospital, Taizhou, Jiangsu, China
| | - De Ma
- Department of Oncology, Jingjiang People’s Hospital, Taizhou, Jiangsu, China
- CONTACT De Ma Department of Oncology, Jingjiang People’s Hospital, No. 28 Zhongzhou Road, Jingjiang City, Jiangsu Province214500, China
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Bahman F, Pittalà V, Haider M, Greish K. Enhanced Anticancer Activity of Nanoformulation of Dasatinib against Triple-Negative Breast Cancer. J Pers Med 2021; 11:jpm11060559. [PMID: 34204015 PMCID: PMC8234460 DOI: 10.3390/jpm11060559] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/10/2021] [Accepted: 06/11/2021] [Indexed: 12/14/2022] Open
Abstract
Triple negative breast cancer (TNBC) is the most aggressive breast cancer accounting for around 15% of identified breast cancer cases. TNBC lacks human epidermal growth factor receptor 2 (HER2) amplification, is hormone independent estrogen (ER) and progesterone receptors (PR) negative, and is not reactive to current targeted therapies. Existing treatment relies on chemotherapeutic treatment, but in spite of an initial response to chemotherapy, the inception of resistance and relapse is unfortunately common. Dasatinib is an approved second-generation inhibitor of multiple tyrosine kinases, and literature data strongly support its use in the management of TNBC. However, dasatinib binds to plasma proteins and undergoes extensive metabolism through oxidation and conjugation. To protect dasatinib from fast pharmacokinetic degradation and to prolong its activity, it was encapsulated on poly(styrene-co-maleic acid) (SMA) micelles. The obtained SMA-dasatinib nanoparticles (NPs) were evaluated for their physicochemical properties, in vitro antiproliferative activity in different TNBC cell lines, and in vivo anticancer activity in a syngeneic model of breast cancer. Obtained results showed that SMA-dasatinib is more potent against 4T1 TNBC tumor growth in vivo compared to free drug. This enhanced effect was ascribed to the encapsulation of the drug protecting it from a rapid metabolism. Our finding highlights the often-overlooked value of nanoformulations in protecting its cargo from degradation. Overall, results may provide an alternative therapeutic strategy for TNBC management.
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Affiliation(s)
- Fatemah Bahman
- Department of Molecular Genetics, Kuwait Ministry of Health, Kuwait City 50000, Kuwait;
| | - Valeria Pittalà
- Department of Drug and Health Science, University of Catania, 95125 Catania, Italy
- Correspondence: (V.P.); (K.G.); Tel.: +39-0957-738-4269 (V.P.); +973-1723-7393 (K.G.); Fax: +973-1724-6022 (K.G.)
| | - Mohamed Haider
- Department of Pharmaceutics and Pharmaceutical Technology, College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates;
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo 71526, Egypt
| | - Khaled Greish
- Department of Molecular Medicine and Nanomedicine Unit, Princess Al-Jawhara Center for Molecular Medicine, College of Medicine and Medical Sciences, Arabian Gulf University, Manama 329, Bahrain
- Correspondence: (V.P.); (K.G.); Tel.: +39-0957-738-4269 (V.P.); +973-1723-7393 (K.G.); Fax: +973-1724-6022 (K.G.)
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7
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Ruiz-Saenz A, Zahedi F, Peterson E, Yoo A, Dreyer CA, Spassov DS, Oses-Prieto J, Burlingame A, Moasser MM. Proteomic Analysis of Src Family Kinase Phosphorylation States in Cancer Cells Suggests Deregulation of the Unique Domain. Mol Cancer Res 2021; 19:957-967. [PMID: 33727342 DOI: 10.1158/1541-7786.mcr-20-0825] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 02/03/2021] [Accepted: 03/10/2021] [Indexed: 11/16/2022]
Abstract
The Src family kinases (SFK) are homologs of retroviral oncogenes, earning them the label of proto-oncogenes. Their functions are influenced by positive and negative regulatory tyrosine phosphorylation events and inhibitory and activating intramolecular and extramolecular interactions. This regulation is disrupted in their viral oncogene counterparts. However, in contrast to most other proto-oncogenes, the genetic alteration of these genes does not seem to occur in human tumors and how and whether their functions are altered in human cancers remain to be determined. To look for proteomic-level alterations, we took a more granular look at the activation states of SFKs based on their two known regulatory tyrosine phosphorylations, but found no significant differences in their activity states when comparing immortalized epithelial cells with cancer cells. SFKs are known to have other less well-studied phosphorylations, particularly within their unstructured N-terminal unique domains (UD), although their role in cancers has not been explored. In comparing panels of epithelial cells with cancer cells, we found a decrease in S17 phosphorylation in the UD of Src in cancer cells. Dephosphorylated S17 favors the dimerization of Src that is mediated through the UD and suggests increased Src dimerization in cancers. These data highlight the important role of the UD of Src and suggest that a deeper understanding of proteomic-level alterations of the unstructured UD of SFKs may provide considerable insights into how SFKs are deregulated in cancers. IMPLICATIONS: This work highlights the role of the N-terminal UD of Src kinases in regulating their signaling functions and possibly in their deregulation in human cancers.
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Affiliation(s)
- Ana Ruiz-Saenz
- Departments of Cell Biology & Medical Oncology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Farima Zahedi
- Department of Medicine, University of California, San Francisco, San Francisco, California
| | - Elliott Peterson
- Department of Medicine, University of California, San Francisco, San Francisco, California
| | - Ashley Yoo
- Department of Medicine, University of California, San Francisco, San Francisco, California
| | - Courtney A Dreyer
- Department of Biochemistry and Molecular Medicine, University of California, Davis, Davis, California
| | | | - Juan Oses-Prieto
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, California
| | - Alma Burlingame
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, California.,Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, California
| | - Mark M Moasser
- Department of Medicine, University of California, San Francisco, San Francisco, California. .,Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, California
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Abdo GG, Gupta I, Kheraldine H, Rizeq B, Zagho MM, Khalil A, Elzatahry A, Al Moustafa AE. Mesoporous silica coated carbon nanofibers reduce embryotoxicity via ERK and JNK pathways. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 122:111910. [PMID: 33641906 DOI: 10.1016/j.msec.2021.111910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 01/19/2021] [Accepted: 01/21/2021] [Indexed: 11/19/2022]
Abstract
Carbon nanofibers (CNFs) have been implicated in biomedical applications, yet, they are still considered as a potential hazard. Conversely, mesoporous silica is a biocompatible compound that has been used in various biomedical applications. In this regard, we recently reported that CNFs induce significant toxicity on the early stage of embryogenesis in addition to the inhibition of its angiogenesis. Thus, we herein use mesoporous silica coating of CNFs (MCNFs) in order to explore their outcome on normal development and angiogenesis using avian embryos at 3 days and its chorioallantoic membrane (CAM) at 6 days of incubation. Our data show that mesoporous silica coating of CNFs significantly reduces embryotoxicity provoked by CNFs. However, MCNFs exhibit slight increase in angiogenesis inhibition in comparison with CNFs. Further investigation revealed that MCNFs slightly deregulate the expression patterns of key controller genes involved in cell proliferation, survival, angiogenesis, and apoptosis as compared to CNFs. We confirmed these data using avian primary normal embryonic fibroblast cells established in our lab. Regarding the molecular pathways, we found that MCNFs downregulate the expression of ERK1/ERK2, p-ERK1/ERK2 and JNK1/JNK2/JNK3, thus indicating a protective role of MCNFs via ERK and JNK pathways. Our data suggest that coating CNFs with a layer of mesoporous silica can overcome their toxicity making them suitable for use in biomedical applications. Nevertheless, further investigations are required to evaluate the effects of MCNFs and their mechanisms using different in vitro and in vivo models.
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Affiliation(s)
- Ghada G Abdo
- College of Pharmacy, QU Health, Qatar University, PO Box 2713, Doha, Qatar; Biomedical Research Centre, Qatar University, PO Box 2713, Doha, Qatar.
| | - Ishita Gupta
- Biomedical Research Centre, Qatar University, PO Box 2713, Doha, Qatar; College of Medicine, QU Health, Qatar University, PO Box 2713, Doha, Qatar.
| | - Hadeel Kheraldine
- Biomedical Research Centre, Qatar University, PO Box 2713, Doha, Qatar; College of Medicine, QU Health, Qatar University, PO Box 2713, Doha, Qatar.
| | - Balsam Rizeq
- Biomedical Research Centre, Qatar University, PO Box 2713, Doha, Qatar; College of Medicine, QU Health, Qatar University, PO Box 2713, Doha, Qatar.
| | - Moustafa M Zagho
- School of Polymer Science and Engineering, University of Southern Mississippi, Hattiesburg, MS 39406, United States of America.
| | - Ashraf Khalil
- College of Pharmacy, QU Health, Qatar University, PO Box 2713, Doha, Qatar.
| | - Ahmed Elzatahry
- Department of Materials Science and Technology Program, College of Arts and Sciences, Qatar University, PO Box 2713, Doha, Qatar.
| | - Ala-Eddin Al Moustafa
- Biomedical Research Centre, Qatar University, PO Box 2713, Doha, Qatar; College of Medicine, QU Health, Qatar University, PO Box 2713, Doha, Qatar.
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Al-Asmakh M, Bawadi H, Hamdan M, Gupta I, Kheraldine H, Jabeen A, Rizeq B, Al Moustafa AE. Dasatinib and PD-L1 inhibitors provoke toxicity and inhibit angiogenesis in the embryo. Biomed Pharmacother 2020; 134:111134. [PMID: 33341672 DOI: 10.1016/j.biopha.2020.111134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 12/07/2020] [Accepted: 12/10/2020] [Indexed: 12/20/2022] Open
Abstract
Dasatinib is a targeted cancer therapy, while programmed death ligand 1 (PD-L1) inhibitors are a form of immune checkpoint therapy used to treat various types of cancers. Several studies showed the potential efficacy of these drugs in the management of triple-negative breast cancer- an aggressive subtype of breast cancer, which can develop during pregnancy. Nevertheless, side effects of Dasatinib (DA) and PD-L1 drugs during pregnancy, especially in the early stages of embryogenesis are not explored yet. The aim of this study is to assess the individual and combined toxicity of DA and PD-L1 inhibitors during the early stages of embryogenesis and to evaluate their effect(s) on angiogenesis using the chorioallantoic membrane (CAM) model of the embryo. Our results show that embryos die at greater rates after exposure to DA and PD-L1 inhibitors as compared to their matched controls. Moreover, treatment with these drugs significantly inhibits angiogenesis of the CAM. To further elucidate key regulator genes of embryotoxicity induced by the actions of PD-L1 and DA, an RT-PCR analysis was performed for seven target genes that regulate cell proliferation, angiogenesis, and survival (ATF3, FOXA2, MAPRE2, RIPK1, INHBA, SERPINA4, and VEGFC). Our data revealed that these genes are significantly deregulated in the brain, heart, and liver tissues of exposed embryos, compared to matched control tissues. Nevertheless, further studies are necessary to evaluate the effects of these anti breast cancer drugs and elucidate their role during pregnancy.
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Affiliation(s)
- Maha Al-Asmakh
- Department of Biomedical Sciences, College of Health Sciences, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; Biomedical Research Centre, Qatar University, Doha, P.O. Box 2713, Qatar; Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Hiba Bawadi
- Department of Nutrition, College of Health Sciences, QU Health, Qatar University, P. O. Box 2713, Doha, Qatar.
| | - Munia Hamdan
- Department of Biomedical Sciences, College of Health Sciences, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; College of Health and Life Sciences, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar.
| | - Ishita Gupta
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; College of Medicine, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Hadeel Kheraldine
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; College of Medicine, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Ayesha Jabeen
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; College of Medicine, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Balsam Rizeq
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; College of Medicine, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Ala-Eddin Al Moustafa
- Biomedical Research Centre, Qatar University, Doha, P.O. Box 2713, Qatar; Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; College of Medicine, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar; Oncology Department, Faculty of Medicine, McGill University, Montreal, QC, Canada.
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Bellat V, Verchère A, Ashe SA, Law B. Transcriptomic insight into salinomycin mechanisms in breast cancer cell lines: synergistic effects with dasatinib and induction of estrogen receptor β. BMC Cancer 2020; 20:661. [PMID: 32678032 PMCID: PMC7364656 DOI: 10.1186/s12885-020-07134-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 07/02/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Tumors are heterogeneous in nature, composed of different cell populations with various mutations and/or phenotypes. Using a single drug to encounter cancer progression is generally ineffective. To improve the treatment outcome, multiple drugs of distinctive mechanisms but complementary anticancer activities (combination therapy) are often used to enhance antitumor efficacy and minimize the risk of acquiring drug resistance. We report here the synergistic effects of salinomycin (a polyether antibiotic) and dasatinib (a Src kinase inhibitor). METHODS Functionally, both drugs induce cell cycle arrest, intracellular reactive oxygen species (iROS) production, and apoptosis. We rationalized that an overlapping of the drug activities should offer an enhanced anticancer effect, either through vertical inhibition of the Src-STAT3 axis or horizontal suppression of multiple pathways. We determined the toxicity induced by the drug combination and studied the kinetics of iROS production by fluorescence imaging and flow cytometry. Using genomic and proteomic techniques, including RNA-sequencing (RNA-seq), reverse transcription-quantitative polymerase chain reaction (RT-qPCR), and Western Blot, we subsequently identified the responsible pathways that contributed to the synergistic effects of the drug combination. RESULTS Compared to either drug alone, the drug combination showed enhanced potency against MDA-MB-468, MDA-MB-231, and MCF-7 human breast cancer (BC) cell lines and tumor spheroids. The drug combination induces both iROS generation and apoptosis in a time-dependent manner, following a 2-step kinetic profile. RNA-seq data revealed that the drug combination exhibited synergism through horizontal suppression of multiple pathways, possibly through a promotion of cell cycle arrest at the G1/S phase via the estrogen-mediated S-phase entry pathway, and partially via the BRCA1 and DNA damage response pathway. CONCLUSION Transcriptomic analyses revealed for the first time, that the estrogen-mediated S-phase entry pathway partially contributed to the synergistic effect of the drug combination. More importantly, our studies led to the discoveries of new potential therapeutic targets, such as E2F2, as well as a novel drug-induced targeting of estrogen receptor β (ESR2) approach for triple-negative breast cancer treatment, currently lacking of targeted therapies.
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Affiliation(s)
- Vanessa Bellat
- Molecular Imaging Innovations Institute, Department of Radiology, Weill Cornell Medicine, New York, NY, USA
| | - Alice Verchère
- Department of Biochemistry, Weill Cornell Medicine, New York, NY, USA
| | - Sally A Ashe
- Molecular Imaging Innovations Institute, Department of Radiology, Weill Cornell Medicine, New York, NY, USA
| | - Benedict Law
- Molecular Imaging Innovations Institute, Department of Radiology, Weill Cornell Medicine, New York, NY, USA. .,Lead contact, New York, USA.
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Kessel SL, Chan LLY. A High-Throughput Image Cytometry Method for the Formation, Morphometric, and Viability Analysis of Drug-Treated Mammospheres. SLAS DISCOVERY 2020; 25:723-733. [PMID: 32396489 DOI: 10.1177/2472555220922817] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The nonadherent mammosphere assay has been commonly used to investigate cancer stem cell activities in breast cancers that have the ability to form tumorspheres and maintain tumor growth. The sphere formation step is critical, in that it enables the construction of the mammosphere models for downstream assays. The mammosphere assay has also been used to assess the effects of drug treatment on the tumorspheres formed from primary cancer cells or cell lines. Traditionally, the mammosphere formation has been evaluated by standard microscopy systems that required external software for additional analyses. However, this method can be time-consuming and low-throughput, thus impractical for high-throughput characterization of mammosphere models and screening for potential therapeutic cancer drugs. To overcome these challenges, we developed a plate-based high-throughput method to rapidly analyze mammospheres in whole wells using the Celigo Image Cytometer. The method is employed to characterize mammosphere formation and morphology for adherent and nonadherent propagation of four breast cancer cell lines (MCF7, MDA-MB-436, MDA-MB-231, and SKBR3). Next, the dose-dependent effects of four small molecule drugs (doxorubicin, paclitaxel, 8-quinolinol, and salinomycin) are characterized based on sphere formation and viability stained with calcein AM and propidium iodide. We observed growth and morphometric differences between adherent and nonadherent propagation of the four cell lines. Furthermore, drug treatments induced various effects on mammosphere formation, morphology, and viability. The proposed image cytometry method provides a useful tool suitable for high-throughput characterization and analysis of mammospheres, which can improve assay efficiency when investigating the formation capabilities and drug-induced cytotoxicity effects.
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Affiliation(s)
- Sarah L Kessel
- Department of Advanced Technology R&D, Nexcelom Bioscience LLC, Lawrence, MA, USA
| | - Leo Li-Ying Chan
- Department of Advanced Technology R&D, Nexcelom Bioscience LLC, Lawrence, MA, USA
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Bhummaphan N, Petpiroon N, Prakhongcheep O, Sritularak B, Chanvorachote P. Lusianthridin targeting of lung cancer stem cells via Src-STAT3 suppression. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 62:152932. [PMID: 31100681 DOI: 10.1016/j.phymed.2019.152932] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 04/11/2019] [Accepted: 04/15/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Cancer stem cells (CSCs) are well-recognized as a majority cause of treatment failure and can give rise to relapse. The discovery of compounds attenuating CSCs' properties is crucial for enabling advances in novel therapeutics to limit recurrence. CSCs' features in lung cancer are regulated through a reduction in Src-STAT3-c-Myc, which drives cancer progression, drug resistance, and metastasis. METHODS The effect of lusianthridin suppresses CSC-like phenotypes was determined by 3D culture and anchorage independent growth. The expression of CSC markers and associated proteins were determined by Western blot analyses. Protein ubiquitination and degradation were assessed using immunoprecipitation. RESULTS Herein, we report that lusianthridin, a pure compound from Dendrobium venustum, dramatically suppressed CSCs in lung cancer cells as verified by several CSC phenotype assessments and CSC markers. The CSC phenotypes in lusianthridin-treated cells were suppressed through downregulation of Src-STAT3-c-Myc pathways. Ectopic Src introduced by the transfection augmented CSC phenotypes in lung cancer cells through STAT3 (increased active p-STAT3Tyr705) and c-Myc signals, while the ShRNA-Src transfection or Src inhibitor dasatinib exhibited opposite results. Treatment of the Src-overexpressing cells with lusianthridin resulted in the reversal of active STAT3 (p-STAT3Tyr705) and c-Myc as well as the CSC marker CD133. Importantly, we confirmed the CSC-targeted activity of lusianthridin in CSC-rich primary lung cancer cells. The compound dramatically inhibited the formation of tumor spheres of primary lung cancer cells. Finally, we demonstrated that after CSC-attenuation by lusianthridin, the lung cancer cells exhibited significantly higher susceptibility to chemotherapeutic drugs. Such a sensitizing effect caused by pro-survival suppression and pro-apoptotic induction together with the abolishment of stemness indicated by the decrease in CSC markers CD133, ABCG2, and ALDH1A1. CONCLUSION These findings revealed a novel pharmacological action and the underlying mechanism of lusianthridin in negatively regulating CSC-like phenotypes and sensitizing resistant cancer cells to cemetery.
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Affiliation(s)
- Narumol Bhummaphan
- Inter-Department Program of Biomedical Sciences, Faculty of Graduate School, Chulalongkorn University, Bangkok 10330, Thailand; Cell-Based Drug and Health Product Development Research Unit, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Nalinrat Petpiroon
- Cell-Based Drug and Health Product Development Research Unit, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand; Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand
| | - Ornjira Prakhongcheep
- Cell-Based Drug and Health Product Development Research Unit, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand; Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand
| | - Boonchoo Sritularak
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Pithi Chanvorachote
- Cell-Based Drug and Health Product Development Research Unit, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand; Department of Pharmacology and Physiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand.
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Dasatinib sensitises triple negative breast cancer cells to chemotherapy by targeting breast cancer stem cells. Br J Cancer 2018; 119:1495-1507. [PMID: 30482914 PMCID: PMC6288167 DOI: 10.1038/s41416-018-0287-3] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 08/21/2018] [Accepted: 09/12/2018] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Patients with triple negative breast cancer (TNBC) exhibit poor prognosis and are at high risk of tumour relapse, due to the resistance to chemotherapy. These aggressive phenotypes are in part attributed to the presence of breast cancer stem cells (BCSCs). Therefore, targeting BCSCs is a priority to overcoming chemotherapy failure in TNBCs. METHODS We generated paclitaxel (pac)-resistant TNBC cells which displayed higher sphere forming potential and percentage of BCSC subpopulations compared to the parental cells. A screen with various kinase inhibitors revealed dasatinib, a Src kinase family inhibitor, as a potent suppressor of BCSC expansion/sphere formation in pac-resistant TNBC cells. RESULTS We found dasatinib to block pac-induced BCSC enrichment and Src activation in both parental and pac-resistant TNBC cells. Interestingly, dasatinib induced an epithelial differentiation of the pac-resistant mesenchymal cells, resulting in their enhanced sensitivity to paclitaxel. The combination treatment of dasatinib and paclitaxel not only decreased the BCSCs numbers and their sphere forming capacity but also synergistically reduced cell viability of pac-resistant cells. Preclinical models of breast cancer further demonstrated the efficiency of the dasatinib/paclitaxel combination treatment in inhibiting tumour growth. CONCLUSIONS Dasatinib is a promising anti-BCSC drug that could be used in combination with paclitaxel to overcome chemoresistance in TNBC.
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Cytokeratin 19 (KRT19) has a Role in the Reprogramming of Cancer Stem Cell-Like Cells to Less Aggressive and More Drug-Sensitive Cells. Int J Mol Sci 2018; 19:ijms19051423. [PMID: 29747452 PMCID: PMC5983664 DOI: 10.3390/ijms19051423] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 05/04/2018] [Accepted: 05/07/2018] [Indexed: 02/08/2023] Open
Abstract
Cytokeratin 19 (KRT19) is a cytoplasmic intermediate filament protein, which is responsible for structural rigidity and multipurpose scaffolds. In several cancers, KRT19 is overexpressed and may play a crucial role in tumorigenic transformation. In our previous study, we revealed the role of KRT19 as signaling component which mediated Wnt/NOTCH crosstalk through NUMB transcription in breast cancer. Here, we investigated the function of KRT19 in cancer reprogramming and drug resistance in breast cancer cells. We found that expression of KRT19 was attenuated in several patients-derived breast cancer tissues and patients with a low expression of KRT19 were significantly correlated with poor prognosis in breast cancer patients. Consistently, highly aggressive and drug-resistant breast cancer patient-derived cancer stem cell-like cells (konkuk university-cancer stem cell-like cell (KU-CSLCs)) displayed higher expression of cancer stem cell (CSC) markers, including ALDH1, CXCR4, and CD133, but a much lower expression of KRT19 than that is seen in highly aggressive triple negative breast cancer MDA-MB231 cells. Moreover, we revealed that the knockdown of KRT19 in MDA-MB231 cells led to an enhancement of cancer properties, such as cell proliferation, sphere formation, migration, and drug resistance, while the overexpression of KRT19 in KU-CSLCs resulted in the significant attenuation of cancer properties. KRT19 regulated cancer stem cell reprogramming by modulating the expression of cancer stem cell markers (ALDH1, CXCR4, and CD133), as well as the phosphorylation of Src and GSK3β (Tyr216). Therefore, our data may imply that the modulation of KRT19 expression could be involved in cancer stem cell reprogramming and drug sensitivity, which might have clinical implications for cancer or cancer stem cell treatment.
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EMP2 is a novel therapeutic target for endometrial cancer stem cells. Oncogene 2017; 36:5793-5807. [PMID: 28604744 PMCID: PMC5648618 DOI: 10.1038/onc.2017.142] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 03/21/2017] [Accepted: 03/25/2017] [Indexed: 12/12/2022]
Abstract
Previous studies have suggested that overexpression of the oncogenic protein epithelial membrane protein-2 (EMP2) correlates with endometrial carcinoma progression and ultimately poor survival from disease. To understand the role of EMP2 in the etiology of disease, gene analysis was performed to show transcripts that are reciprocally regulated by EMP2 levels. In particular, EMP2 expression correlates with and helps regulate the expression of several cancer stem cell associated markers including aldehyde dehydrogenase 1 (ALDH1). ALDH expression significantly promotes tumor initiation and correlates with the levels of EMP2 expression in both patient samples and tumor cell lines. As therapy against CSCs in endometrial cancer is lacking, the ability of anti-EMP2 IgG1 therapy to reduce primary and secondary tumor formation using xenograft HEC1A models was determined. Anti-EMP2 IgG1 reduced the expression and activity of ALDH and correspondingly reduced both primary and secondary tumor load. Our results collectively suggest that anti-EMP2 therapy may be a novel method of reducing endometrial cancer stem cells.
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16
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Cadherins Associate with Distinct Stem Cell-Related Transcription Factors to Coordinate the Maintenance of Stemness in Triple-Negative Breast Cancer. Stem Cells Int 2017; 2017:5091541. [PMID: 28392805 PMCID: PMC5368378 DOI: 10.1155/2017/5091541] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 01/05/2017] [Accepted: 01/17/2017] [Indexed: 12/27/2022] Open
Abstract
Triple-negative breast cancer (TNBC) is an aggressive type of breast cancer with poor prognosis and is enriched in cancer stem cells (CSCs). However, it is not completely understood how the CSCs were maintained in TNBC. In this study, by analyzing The Cancer Genome Atlas (TCGA) provisional datasets and several small-size breast datasets, we found that cadherins (CDHs) 2, 4, 6, and 17 were frequently amplified/overexpressed in 47% of TNBC while E-cadherin (CDH1) was downregulated/mutated at 10%. The alterations of CDH2/4/6/17 were strongly associated with the elevated levels of several stem cell-related transcription factors (SC-TFs) including FOXM1, MCM2, WWTR1, SNAI1, and SOX9. CDH2/4/6/17-enriched genes including FOXM1 and MCM2 were also clustered and regulated by NFY (nuclear transcription factor Y) and/or EVI1/MECOM. Meanwhile, these SC-TFs including NFYA were upregulated in TNBC cells, but they were downregulated in luminal type of cells. Furthermore, small compounds might be predicted via the Connectivity Map analysis to target TNBC with the alterations of CDH2/4/6/17 and SC-TFs. Together with the important role of these SC-TFs in the stem cell regulation, our data provide novel insights into the maintenance of CSCs in TNBC and the discovery of these SC-TFs associated with the alterations of CDH2/4/6/17 has an implication in targeted therapy of TNBC.
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Koike Y, Ohta Y, Saitoh W, Yamashita T, Kanomata N, Moriya T, Kurebayashi J. Anti-cell growth and anti-cancer stem cell activities of the non-canonical hedgehog inhibitor GANT61 in triple-negative breast cancer cells. Breast Cancer 2017; 24:683-693. [DOI: 10.1007/s12282-017-0757-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 01/23/2017] [Indexed: 12/21/2022]
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18
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Kinoshita Y, Yoshizawa K, Hamazaki K, Emoto Y, Yuri T, Yuki M, Kawashima H, Shikata N, Tsubura A. Dietary effects of mead acid on N-methyl- N-nitrosourea-induced mammary cancers in female Sprague-Dawley rats. Biomed Rep 2015; 4:33-39. [PMID: 26870330 DOI: 10.3892/br.2015.530] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 09/30/2015] [Indexed: 12/25/2022] Open
Abstract
The effect of mead acid (MA; 5,8,11-eicosatrienoic acid) on the suppression of the development and growth of N-methyl-N-nitrosourea (MNU)-induced mammary cancer in female Sprague-Dawley rats was examined. The MA diet (2.4% MA) or control (CTR) diet (0% MA) was started at 6 weeks of age, MNU was injected intraperitoneally at 7 weeks of age, and the rats were maintained on the respective diets for the whole experimental period (until 19 weeks of age). All induced mammary tumors were luminal A subtype carcinomas (estrogen and progesterone receptor positive and HER2/neu negative). The MA diet significantly suppressed the initiation and promotion phases of mammary carcinogenesis; MA suppressed the development (incidence, 61.5 vs. 100%; multiplicity, 2.1 vs. 4.5) and the growth (final tumor weight, 427.1 vs. 1,796.3 mg) of mammary cancers by suppressing cell proliferation, but not by accelerating cell death. There were evident changes in the major fatty acid composition of n-3, n-6, and n-9 fatty acids in the serum of the MA diet group; there was a significant increase in MA and significant decreases in oleic acid (OA), linoleic acid, arachidonic acid and docosahexaenoic acid. In non-tumorous mammary tissue, there was a significant increase in MA and a significant decrease in OA in the MA diet group. The n-6/n-3 ratios in serum and mammary tissue of the MA diet group were significantly decreased. The MA diet suppressed MNU-induced luminal A mammary cancer by lowering cancer cell proliferation. Therefore, MA may be a chemopreventive and chemotherapeutic agent. In addition to hormone therapy, MA supplementation may be a beneficial chemotherapeutic agent for the luminal A subtype of breast cancer.
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Affiliation(s)
- Yuichi Kinoshita
- Department of Pathology II, Kansai Medical University, Hirakata, Osaka 537-1010, Japan; Division of Diagnostic Cytopathology and Histopathology, Kansai Medical University Takii Hospital, Moriguchi, Osaka 570-8507, Japan
| | - Katsuhiko Yoshizawa
- Department of Pathology II, Kansai Medical University, Hirakata, Osaka 537-1010, Japan
| | - Kei Hamazaki
- Department of Public Health, Faculty of Medicine, University of Toyama, Sugitani, Toyama 930-0194, Japan
| | - Yuko Emoto
- Department of Pathology II, Kansai Medical University, Hirakata, Osaka 537-1010, Japan
| | - Takashi Yuri
- Department of Pathology II, Kansai Medical University, Hirakata, Osaka 537-1010, Japan
| | - Michiko Yuki
- Department of Pathology II, Kansai Medical University, Hirakata, Osaka 537-1010, Japan
| | - Hiroshi Kawashima
- Institute for Health Care Science, Suntory Wellness Ltd., Seika-cho, Kyoto 619-0284, Japan
| | - Nobuaki Shikata
- Division of Diagnostic Cytopathology and Histopathology, Kansai Medical University Takii Hospital, Moriguchi, Osaka 570-8507, Japan
| | - Airo Tsubura
- Department of Pathology II, Kansai Medical University, Hirakata, Osaka 537-1010, Japan
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Thakur R, Trivedi R, Rastogi N, Singh M, Mishra DP. Inhibition of STAT3, FAK and Src mediated signaling reduces cancer stem cell load, tumorigenic potential and metastasis in breast cancer. Sci Rep 2015; 5:10194. [PMID: 25973915 PMCID: PMC4431480 DOI: 10.1038/srep10194] [Citation(s) in RCA: 143] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 04/02/2015] [Indexed: 12/26/2022] Open
Abstract
Cancer stem cells (CSCs) are responsible for aggressive tumor growth, metastasis and therapy resistance. In this study, we evaluated the effects of Shikonin (Shk) on breast cancer and found its anti-CSC potential. Shk treatment decreased the expression of various epithelial to mesenchymal transition (EMT) and CSC associated markers. Kinase profiling array and western blot analysis indicated that Shk inhibits STAT3, FAK and Src activation. Inhibition of these signaling proteins using standard inhibitors revealed that STAT3 inhibition affected CSCs properties more significantly than FAK or Src inhibition. We observed a significant decrease in cell migration upon FAK and Src inhibition and decrease in invasion upon inhibition of STAT3, FAK and Src. Combined inhibition of STAT3 with Src or FAK reduced the mammosphere formation, migration and invasion more significantly than the individual inhibitions. These observations indicated that the anti-breast cancer properties of Shk are due to its potential to inhibit multiple signaling proteins. Shk also reduced the activation and expression of STAT3, FAK and Src in vivo and reduced tumorigenicity, growth and metastasis of 4T1 cells. Collectively, this study underscores the translational relevance of using a single inhibitor (Shk) for compromising multiple tumor-associated signaling pathways to check cancer metastasis and stem cell load.
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Affiliation(s)
- Ravi Thakur
- Cell Death Research Laboratory, Endocrinology Division, CSIR-CDRI, Lucknow, INDIA
| | - Rachana Trivedi
- Cell Death Research Laboratory, Endocrinology Division, CSIR-CDRI, Lucknow, INDIA
| | - Namrata Rastogi
- Cell Death Research Laboratory, Endocrinology Division, CSIR-CDRI, Lucknow, INDIA
| | - Manisha Singh
- Cell Death Research Laboratory, Endocrinology Division, CSIR-CDRI, Lucknow, INDIA
| | - Durga Prasad Mishra
- Cell Death Research Laboratory, Endocrinology Division, CSIR-CDRI, Lucknow, INDIA
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Yuri T, Tsubura A. Relation between parity and pregnancy-related hormones and breast cancer control. BREAST CANCER MANAGEMENT 2015. [DOI: 10.2217/bmt.14.52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
SUMMARY Epidemiological research has indicated the beneficial effects of full-term pregnancy at an early age for a reduction in breast cancer risk. Experimental data have shown that pregnancy and pregnancy-related hormones, such as estrogen plus progesterone, estrogen alone and human chorionic gonadotropin, are involved in parity-induced protection. Pregnancy and short-duration treatment of a young host with pregnancy-related hormones to mimic the pregnancy environment provide mammary cancer protection by making cells refractory to carcinogenic stimuli and causing growth arrest and programmed cell death. Experimental data concerning pregnancy and pregnancy-related hormones are reviewed in relation to intrinsic subtypes of mammary cancer.
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Affiliation(s)
- Takashi Yuri
- Department of Pathology II, Kansai Medical University, Hirakata, Osaka, Japan
| | - Airo Tsubura
- Department of Pathology II, Kansai Medical University, Hirakata, Osaka, Japan
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Antitumor and anticancer stem cell activities of eribulin mesylate and antiestrogens in breast cancer cells. Breast Cancer 2015; 23:425-36. [PMID: 25552385 DOI: 10.1007/s12282-014-0580-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 12/23/2014] [Indexed: 02/08/2023]
Abstract
BACKGROUND Eribulin mesylate (eribulin), a non-taxane microtubule dynamic inhibitor, has been widely used in the treatment of patients with advanced or metastatic breast cancer. The combined antitumor and anticancer stem cell (CSC) activities of eribulin with endocrine therapeutic agents have not yet been examined in breast cancer cells. We herein investigated the combined effects of eribulin and antiestrogens. METHODS A panel of eight breast cancer cell lines, including five estrogen receptor (ER)-positive and three ER-negative cell lines, was used. These cells were treated with eribulin and/or the antiestrogen, 4-hydroxytamoxifen or fulvestrant. Their growth inhibitory activities and effects on cell cycle progression, apoptosis, and the CSC population were investigated. CSCs were detected using the CD44/CD24/EpCAM, Aldefluor, and mammosphere assays. RESULTS The 50% growth inhibitory concentrations of eribulin were 0.38-2.64 nM for the eight cell lines tested. Eribulin exhibited significant antitumor activity under estrogen-supplemented conditions in ER-positive breast cancer cells. The combined antitumor activity of eribulin with an antiestrogen was evaluated using the combination index. The combination index was 0.43-1.46 for ER-positive cell lines. The additive antitumor effect of eribulin with 4-OHT was only significant in MCF-7 cells. Eribulin induced the accumulation of G2/M and apoptosis, while antiestrogens induced the retardation of G1-S cell cycle and apoptosis, respectively. Estrogen markedly increased the proportion of CSCs, whereas antiestrogens inhibited increases in ER-positive cell lines. Moreover, eribulin decreased the proportion of CSCs in either ER-positive or ER-negative cell lines. The combined treatment of eribulin with an antiestrogen did not additively decrease the proportion of CSCs in ER-positive cell lines. DISCUSSION The results of the present study demonstrated that eribulin had potent antitumor effects on estrogen-stimulated ER-positive breast cancer cells and the combined treatment of eribulin with an antiestrogen resulted in a weakly additive antitumor effect. We herein suggested for the first time that eribulin exhibited anti-CSC effects on either ER-positive or ER-negative breast cancer cells.
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Zhang X, Shen D, Lü ZR, Zhan Y, Si N, Li MM, Yang JM, Zhou HM, Park YD, Zhang Q, Lee J. Effects of hydroxysafflor yellow A on ALDH1: Inhibition kinetics and molecular dynamics simulation. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.06.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Lu G, Zhang Q, Huang Y, Song J, Tomaino R, Ehrenberger T, Lim E, Liu W, Bronson RT, Bowden M, Brock J, Krop IE, Dillon DA, Gygi SP, Mills GB, Richardson AL, Signoretti S, Yaffe MB, Kaelin WG. Phosphorylation of ETS1 by Src family kinases prevents its recognition by the COP1 tumor suppressor. Cancer Cell 2014; 26:222-34. [PMID: 25117710 PMCID: PMC4169234 DOI: 10.1016/j.ccr.2014.06.026] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 05/09/2014] [Accepted: 06/27/2014] [Indexed: 12/12/2022]
Abstract
Oncoproteins and tumor suppressors antagonistically converge on critical nodes governing neoplastic growth, invasion, and metastasis. We discovered that phosphorylation of the ETS1 and ETS2 transcriptional oncoproteins at specific serine or threonine residues creates binding sites for the COP1 tumor suppressor protein, which is an ubiquitin ligase component, leading to their destruction. In the case of ETS1, however, phosphorylation of a neighboring tyrosine residue by Src family kinases disrupts COP1 binding, thereby stabilizing ETS1. Src-dependent accumulation of ETS1 in breast cancer cells promotes anchorage-independent growth in vitro and tumor growth in vivo. These findings expand the list of potential COP1 substrates to include proteins whose COP1-binding sites are subject to regulatory phosphorylation and provide insights into transformation by Src family kinases.
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Affiliation(s)
- Gang Lu
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Qing Zhang
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Ying Huang
- Center for Molecular Oncologic Pathology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Jiaxi Song
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Ross Tomaino
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Tobias Ehrenberger
- Department of Biology, Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Elgene Lim
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA
| | - Wenbin Liu
- Department of Systems Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Roderick T Bronson
- Rodent Histopathology Core, Dana Farber/Harvard Cancer Center, Harvard Medical School, Boston, MA 02115, USA
| | - Michaela Bowden
- Center for Molecular Oncologic Pathology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Jane Brock
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Ian E Krop
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Deborah A Dillon
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Steven P Gygi
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Gordon B Mills
- Department of Systems Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Andrea L Richardson
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Cancer Cell Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Sabina Signoretti
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Michael B Yaffe
- Department of Biology, Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - William G Kaelin
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Howard Hughes Medical Institute, Chevy Chase, MD 20815, USA.
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KINOSHITA YUICHI, YOSHIZAWA KATSUHIKO, HAMAZAKI KEI, EMOTO YUKO, YURI TAKASHI, YUKI MICHIKO, SHIKATA NOBUAKI, KAWASHIMA HIROSHI, TSUBURA AIRO. Mead acid inhibits the growth of KPL-1 human breast cancer cells in vitro and in vivo. Oncol Rep 2014; 32:1385-94. [DOI: 10.3892/or.2014.3390] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 07/17/2014] [Indexed: 11/05/2022] Open
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Yori JL, Lozada KL, Seachrist DD, Mosley JD, Abdul-Karim FW, Booth CN, Flask CA, Keri RA. Combined SFK/mTOR inhibition prevents rapamycin-induced feedback activation of AKT and elicits efficient tumor regression. Cancer Res 2014; 74:4762-71. [PMID: 25023728 DOI: 10.1158/0008-5472.can-13-3627] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Resistance to receptor tyrosine kinase (RTK) blockade in breast cancer is often mediated by activation of bypass pathways that sustain growth. Src and mammalian target of rapamycin (mTOR) are two intrinsic targets that are downstream of most RTKs. To date, limited clinical efficacy has been observed with either Src or mTOR inhibitors when used as single agents. Resistance to mTOR inhibitors is associated with loss of negative feedback regulation, resulting in phosphorylation and activation of AKT. Herein, we describe a novel role for Src in contributing to rapalog-induced AKT activation. We found that dual activation of Src and the mTOR pathway occurs in nearly half of all breast cancers, suggesting potential cross-talk. As expected, rapamycin inhibition of mTOR results in feedback activation of AKT in breast cancer cell lines. Addition of the Src/c-Abl inhibitor, dasatinib, completely blocks this feedback activation, confirming convergence between Src and the mTOR pathway. Analysis in vivo revealed that dual Src and mTOR inhibition is highly effective in two mouse models of breast cancer. In a luminal disease model, combined dasatinib and rapamycin is more effective at inducing regression than either single agent. Furthermore, the combination of dasatinib and rapamycin delays tumor recurrence following the cessation of treatment. In a model of human EGFR-2-positive (HER2(+)) disease, dasatinib alone is ineffective, but potentiates the efficacy of rapamycin. These data suggest that combining mTOR and Src inhibitors may provide a new approach for treating multiple breast cancer subtypes that may circumvent resistance to targeted RTK therapies.
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Affiliation(s)
- Jennifer L Yori
- Department of Pharmacology, Case Western Reserve University, School of Medicine, Cleveland, Ohio
| | - Kristen L Lozada
- Department of Pharmacology, Case Western Reserve University, School of Medicine, Cleveland, Ohio
| | - Darcie D Seachrist
- Department of Pharmacology, Case Western Reserve University, School of Medicine, Cleveland, Ohio
| | - Jonathan D Mosley
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Fadi W Abdul-Karim
- Department of Anatomic Pathology, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Christine N Booth
- Department of Anatomic Pathology, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Chris A Flask
- Department of Radiology, Case Western Reserve University, School of Medicine, Cleveland, Ohio. Department of Biomedical Engineering, Case Western Reserve University, School of Medicine, Cleveland, Ohio. Department of Pediatrics, Case Western Reserve University, School of Medicine, Cleveland, Ohio
| | - Ruth A Keri
- Department of Pharmacology, Case Western Reserve University, School of Medicine, Cleveland, Ohio. Department of Genetics and Division of General Medical Sciences-Oncology, Case Western Reserve University, School of Medicine, Cleveland, Ohio.
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26
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Duong HQ, Yi YW, Kang HJ, Bae I, Jang YJ, Kwak SJ, Seong YS. Combination of dasatinib and gemcitabine reduces the ALDH1A1 expression and the proliferation of gemcitabine-resistant pancreatic cancer MIA PaCa-2 cells. Int J Oncol 2014; 44:2132-8. [PMID: 24676703 PMCID: PMC4063532 DOI: 10.3892/ijo.2014.2357] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 02/13/2014] [Indexed: 01/03/2023] Open
Abstract
Gemcitabine-based chemotherapy is the standard for treatment of pancreatic cancer; however, intrinsic and acquired resistance to gemcitabine commonly occurs. Aldehyde dehydrogenase 1A1 (ALDH1A1), one of the characteristic features of tumor-initiating and/or cancer stem cell (CSC) properties, is important in both intrinsic and acquired resistance to gemcitabine. In this study, we investigated the effectiveness of dasatinib, an SRC inhibitor, and gemcitabine combination to inhibit the survivals of parental (MIA PaCa-2/P) and gemcitabine-resistant (MIA PaCa-2/GR) cell lines. In MIA PaCa-2/GR cells, the levels of phospho-SRC and ALDH1A1 were increased compared to MIA PaCa-2/P cells. Inhibition of SRC by dasatinib or siRNA synergistically enhanced gemcitabine-induced anti-proliferative effects and induced apoptotic cell death in these cells. Furthermore, combination of SRC inhibition (either by dasatinib or siRNA) and gemcitabine significantly decreased the levels of ALDH1A1 expression. These results suggest that dasatinib and gemcitabine combination may be a potential therapeutic strategy to overcome gemcitabine resistance by decreasing the levels of ALDH1A1 expression.
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Affiliation(s)
- Hong-Quan Duong
- Department of Nanobiomedical Science and BK21 PLUS Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea
| | - Yong Weon Yi
- Department of Nanobiomedical Science and BK21 PLUS Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea
| | - Hyo Jin Kang
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC 20057, USA
| | - Insoo Bae
- Department of Nanobiomedical Science and BK21 PLUS Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea
| | - Young-Joo Jang
- Department of Nanobiomedical Science and BK21 PLUS Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea
| | - Sahng-June Kwak
- Department of Biochemistry, College of Medicine, Dankook University, Cheonan 330-714, Republic of Korea
| | - Yeon-Sun Seong
- Department of Nanobiomedical Science and BK21 PLUS Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea
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27
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Targeted therapies of metastatic breast cancer: relationships with cancer stem cells. Biomed Pharmacother 2013; 67:543-55. [PMID: 23643355 DOI: 10.1016/j.biopha.2013.03.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 03/10/2013] [Indexed: 12/15/2022] Open
Abstract
In the last years, many targeted agents have been developed for metastatic breast cancer (MBC) treatment and are being tested in clinical trials. In spite of this, apart from epidermal growth factor receptor 2 (HER2) positive subset, no significant increase in the median overall survival (OS) has been reported. Similarly to conventional chemo- and radiotherapy, the cancer stem cell theory has been evoked to explain the frustrating results often obtained with this emerging category of drugs. This review examines the results in MBC of the approved targeted therapies or those currently under evaluation in experimental studies or in clinical trials, in the light of their relationships with breast CSCs and of the efforts to circumvent the development of resistance. In the next, there is the principal need to investigate if the effects on CSCs may be used to overcome cancer resistance and it will be opportune to consider whether molecular targeted therapies should be used alone or combined with conventional therapy, or with a different target drug specific for CSCs.
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28
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Early detection biomarkers for ovarian cancer. JOURNAL OF ONCOLOGY 2012; 2012:709049. [PMID: 23319948 PMCID: PMC3540796 DOI: 10.1155/2012/709049] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 11/19/2012] [Indexed: 12/12/2022]
Abstract
Despite the widespread use of conventional and contemporary methods to detect ovarian cancer development, ovarian cancer remains a common and commonly fatal gynecological malignancy. The identification and validation of early detection biomarkers highly specific to ovarian cancer, which would permit development of minimally invasive screening methods for detecting early onset of the disease, are urgently needed. Current practices for early detection of ovarian cancer include transvaginal ultrasonography, biomarker analysis, or a combination of both. In this paper we review recent research on novel and robust biomarkers for early detection of ovarian cancer and provide specific details on their contributions to tumorigenesis. Promising biomarkers for early detection of ovarian cancer include KLK6/7, GSTT1, PRSS8, FOLR1, ALDH1, and miRNAs.
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Duffy MJ, McGowan PM, Crown J. Targeted therapy for triple-negative breast cancer: where are we? Int J Cancer 2012; 131:2471-7. [PMID: 22581656 DOI: 10.1002/ijc.27632] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Accepted: 04/05/2012] [Indexed: 12/29/2022]
Abstract
Breast cancers that are negative for estrogen receptor (ER), progesterone receptors (PR) and HER2, using standard clinical assays, have been dubbed triple-negative (TN). Unlike other molecular subtypes of invasive breast cancer, validated targeted therapies are currently unavailable for patients with TN breast cancer. Preclinical studies however, have identified several potential targets such as epidermal growth factor receptor (EGFR), SRC, MET and poly ADP ribose polymerase 1/2 (PARP1/2). Because of tumor heterogeneity, it is unlikely that any single targeted therapy will be efficacious in all patients with TN breast cancer. The rational way forward for treating these patients is likely to be biomarker-driven, combination targeted therapies or combination of targeted therapy with cytotoxic chemotherapy.
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Affiliation(s)
- Michael J Duffy
- UCD Clinical Research Centre, St. Vincent's University Hospital, Dublin, Ireland.
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30
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Prognostic impact of the cancer stem cell related markers ALDH1 and EZH2 in triple negative and basal-like breast cancers. Pathology 2012; 44:303-12. [DOI: 10.1097/pat.0b013e3283534bcb] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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31
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Shimo T, Kurebayashi J, Kanomata N, Yamashita T, Kozuka Y, Moriya T, Sonoo H. Antitumor and anticancer stem cell activity of a poly ADP-ribose polymerase inhibitor olaparib in breast cancer cells. Breast Cancer 2012; 21:75-85. [DOI: 10.1007/s12282-012-0356-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Accepted: 03/07/2012] [Indexed: 01/01/2023]
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32
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Engreitz JM, Chen R, Morgan AA, Dudley JT, Mallelwar R, Butte AJ. ProfileChaser: searching microarray repositories based on genome-wide patterns of differential expression. ACTA ACUST UNITED AC 2011; 27:3317-8. [PMID: 21967760 DOI: 10.1093/bioinformatics/btr548] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
SUMMARY We introduce ProfileChaser, a web server that allows for querying the Gene Expression Omnibus based on genome-wide patterns of differential expression. Using a novel, content-based approach, ProfileChaser retrieves expression profiles that match the differentially regulated transcriptional programs in a user-supplied experiment. This analysis identifies statistical links to similar expression experiments from the vast array of publicly available data on diseases, drugs, phenotypes and other experimental conditions. AVAILABILITY http://profilechaser.stanford.edu CONTACT abutte@stanford.edu SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Jesse M Engreitz
- Division of Systems Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA 94305, USA
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33
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Inhibition of aldehyde dehydrogenase (ALDH) activity reduces chemotherapy and radiation resistance of stem-like ALDHhiCD44+ human breast cancer cells. Breast Cancer Res Treat 2011; 133:75-87. [DOI: 10.1007/s10549-011-1692-y] [Citation(s) in RCA: 187] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Accepted: 07/19/2011] [Indexed: 12/23/2022]
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34
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Montero JC, Seoane S, Ocaña A, Pandiella A. Inhibition of SRC family kinases and receptor tyrosine kinases by dasatinib: possible combinations in solid tumors. Clin Cancer Res 2011; 17:5546-52. [PMID: 21670084 DOI: 10.1158/1078-0432.ccr-10-2616] [Citation(s) in RCA: 209] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Dasatinib is a small molecule tyrosine kinase inhibitor that targets a wide variety of tyrosine kinases implicated in the pathophysiology of several neoplasias. Among the most sensitive dasatinib targets are ABL, the SRC family kinases (SRC, LCK, HCK, FYN, YES, FGR, BLK, LYN, and FRK), and the receptor tyrosine kinases c-KIT, platelet-derived growth factor receptor (PDGFR) α and β, discoidin domain receptor 1 (DDR1), c-FMS, and ephrin receptors. Dasatinib inhibits cell duplication, migration, and invasion, and it triggers apoptosis of tumoral cells. As a consequence, dasatinib reduces tumoral mass and decreases the metastatic dissemination of tumoral cells. Dasatinib also acts on the tumoral microenvironment, which is particularly important in the bone, where dasatinib inhibits osteoclastic activity and favors osteogenesis, exerting a bone-protecting effect. Several preclinical studies have shown that dasatinib potentiates the antitumoral action of various drugs used in the oncology clinic, paving the way for the initiation of clinical trials of dasatinib in combination with standard-of-care treatments for the therapy of various neoplasias. Trials using combinations of dasatinib with ErbB/HER receptor antagonists are being explored in breast, head and neck, and colorectal cancers. In hormone receptor-positive breast cancer, trials using combinations of dasatinib with antihormonal therapies are ongoing. Dasatinib combinations with chemotherapeutic agents are also under development in prostate cancer (dasatinib plus docetaxel), melanoma (dasatinib plus dacarbazine), and colorectal cancer (dasatinib plus oxaliplatin plus capecitabine). Here, we review the preclinical evidence that supports the use of dasatinib in combination for the treatment of solid tumors and describe various clinical trials developed following a preclinical rationale.
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Affiliation(s)
- Juan Carlos Montero
- Instituto de Biología Molecular y Celular del Cáncer-Centro de Investigación del Cáncer (CIC), Consejo Superior de Investigaciones Cientificas (CSIC)-Universidad de Salamanca, Salamanca, Spain
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