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Zhao S, Gu J, Tian Y, Wang R, Li W. Low levels of sex hormone-binding globulin predict an increased breast cancer risk and its underlying molecular mechanisms. Open Life Sci 2024; 19:20220822. [PMID: 38465341 PMCID: PMC10921478 DOI: 10.1515/biol-2022-0822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 12/13/2023] [Indexed: 03/12/2024] Open
Abstract
Sex hormone-binding globulin (SHBG) is a serum glycoprotein exhibiting the unique feature of binding sex steroids with high affinity and specificity. Over the past few decades, there have been significant breakthroughs in our understanding of the function and regulation of SHBG. The biological role of SHBG has expanded from being considered a simple sex hormone transporter to being associated with several complex physiological and pathological changes in a variety of target tissues. Many factors can affect the plasma SHBG levels, with fluctuations in circulating levels affecting the development of various diseases, such as increasing the risk of developing breast cancer. This article reviews the clinical significance of changes in circulating SHBG levels in the development of breast cancer and the possible influence of these levels on endocrine drug resistance in hormone receptor-positive breast cancer. Higher levels of plasma SHBG significantly reduce the risk of estrogen receptor-positive breast cancer, especially in postmenopausal women. Moreover, the molecular mechanisms by which SHBG affects breast cancer risk are also summarized in detail. Finally, transcriptomics and proteomics data revealed that SHBG expression in breast tissue can effectively distinguish breast cancer from normal tissue. Additionally, the association between SHBG expression levels and various classical tumor-related pathways was investigated.
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Affiliation(s)
- Shuhang Zhao
- Department of Breast Surgery, Zhengzhou University People's Hospital (Henan Provincial People's Hospital), Zhengzhou, 450003, China
| | - Jiaojiao Gu
- Department of Breast Surgery, Zhengzhou University People's Hospital (Henan Provincial People's Hospital), Zhengzhou, 450003, China
| | - Yu Tian
- Department of Breast Surgery, Zhengzhou University People's Hospital (Henan Provincial People's Hospital), Zhengzhou, 450003, China
| | - Ruoyan Wang
- Department of Breast Surgery, Henan Provincial People's Hospital, Zhengzhou, China
| | - Wentao Li
- Department of Breast Surgery, Zhengzhou University People's Hospital (Henan Provincial People's Hospital), Zhengzhou, 450003, China
- Department of Breast Surgery, Henan Provincial People's Hospital, Zhengzhou, China
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Ichikawa K, Ito S, Kato E, Abe N, Machida T, Iwasaki J, Tanaka G, Araki H, Wakayama K, Jona H, Sugimoto T, Miyadera K, Ohkubo S. TAS0612, a Novel RSK, AKT, and S6K Inhibitor, Exhibits Antitumor Effects in Preclinical Tumor Models. Mol Cancer Ther 2024; 23:174-186. [PMID: 37906695 DOI: 10.1158/1535-7163.mct-21-1037] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 11/18/2022] [Accepted: 10/27/2023] [Indexed: 11/02/2023]
Abstract
The MAPK and PI3K pathways are involved in cancer growth and survival; however, the clinical efficacy of single inhibitors of each pathway is limited or transient owing to resistance mechanisms, such as feedback signaling and/or reexpression of receptor-type tyrosine kinases (RTK). This study identified a potent and novel kinase inhibitor, TAS0612, and characterized its properties. We found that TAS0612 is a potent, orally available compound that can inhibit p90RSK (RSK), AKT, and p70S6K (S6K) as a single agent and showed a strong correlation with the growth inhibition of cancer cells with PTEN loss or mutations, regardless of the presence of KRAS and BRAF mutations. Additional RSK inhibitory activity may differentiate the sensitivity profile of TAS0612 from that of signaling inhibitors that target only the PI3K pathway. Moreover, TAS0612 demonstrated broad-spectrum activity against tumor models wherein inhibition of MAPK or PI3K pathways was insufficient to exert antitumor effects. TAS0612 exhibited a stronger growth-inhibitory activity against the cancer cell lines and tumor models with dysregulated signaling with the genetic abnormalities described above than treatment with inhibitors against AKT, PI3K, MEK, BRAF, and EGFR/HER2. In addition, TAS0612 demonstrated the persistence of blockade of downstream growth and antiapoptotic signals, despite activation of upstream effectors in the signaling pathway and FoxO-dependent reexpression of HER3. In conclusion, TAS0612 with RSK/AKT/S6K inhibitory activity may provide a novel therapeutic strategy for patients with cancer to improve clinical responses and overcome resistance mechanisms.
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Affiliation(s)
- Koji Ichikawa
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Satoshi Ito
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Emi Kato
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Naomi Abe
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Takumitsu Machida
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Junya Iwasaki
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Gotaro Tanaka
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Hikari Araki
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Kentaro Wakayama
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Hideki Jona
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Tetsuya Sugimoto
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Kazutaka Miyadera
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Shuichi Ohkubo
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co., Ltd., Tsukuba, Ibaraki, Japan
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Dong H, Jian Y, Yu T, Wang M, Zhang W, Peng Z. YB-1 Expression Is Associated with Lymph Node Metastasis and Drug Resistance to Adriamycin in Breast Cancer. Dis Markers 2023; 2023:4667089. [PMID: 36785738 DOI: 10.1155/2023/4667089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/26/2022] [Accepted: 11/24/2022] [Indexed: 02/05/2023]
Abstract
Background Breast cancer (BC) is the most common malignant tumor among females. Although there are multiple treatments for breast cancer, many patients still face the dilemma of drug resistance after multiline treatment. It would be greatly helpful for clinical work to identify additional and improved prognostic predictors. Y-box binding protein-1 (YB-1) is a member of the cold shock protein family, and patients with overexpression of YB-1 have a worse prognosis. Methods This study collected 48 specimens from 48 patients with breast cancer and analyzed the clinicopathological characteristics of the patients. Immunohistochemistry, immunofluorescence, cell viability analysis, tumor spheroid formation and cell morphology, cell invasion, cycle analysis, qRT-PCR, Western blot, and tumorigenicity in BALB/c nude mice were performed to verify the results. Results We found that patients with overexpression of YB-1 were related to lymph node metastasis and the patients' age tended to be young. Because of the short follow-up time, a survival analysis could not be performed. Based on the results of in vitro and in vivo experiments, this study indicated that breast cancer cells with overexpression of YB-1 had stronger proliferation, migration, and invasion abilities than cells with low expression of YB-1. Compared with cells with low expression of YB-1, the proliferation, migration, and invasion abilities of YB-1 overexpressed cells were not significantly affected by adriamycin. Conclusion This suggested that breast cancer cells with overexpression of YB-1 were resistant to adriamycin. Therefore, YB-1 is associated with lymph node metastasis of breast cancer cell. YB-1 could be a prognostic, predictive factor and a novel therapeutic target of BC.
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Wang X, Jiang W, Du Y, Zhu D, Zhang J, Fang C, Yan F, Chen ZS. Targeting feedback activation of signaling transduction pathways to overcome drug resistance in cancer. Drug Resist Updat 2022; 65:100884. [DOI: 10.1016/j.drup.2022.100884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 10/05/2022] [Accepted: 10/09/2022] [Indexed: 11/03/2022]
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Zhan Y, Chen X, Zheng H, Luo J, Yang Y, Ning Y, Wang H, Zhang Y, Zhou M, Wang W, Fan S. YB1 associates with oncogenetic roles and poor prognosis in nasopharyngeal carcinoma. Sci Rep 2022; 12:3699. [PMID: 35260638 DOI: 10.1038/s41598-022-07636-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 02/22/2022] [Indexed: 12/16/2022] Open
Abstract
Nasopharyngeal carcinoma (NPC) is the malignant tumor arising from the nasopharynx epithelium with ethnic and geographical distribution preference. Y-box binding protein-1 (YB1) is the highly expressed DNA/RNA-binding protein with cold shock domain, and enhanced YB1 expression was proved to be associated with many kinds of malignant tumors. There is no systematic study about the regulation of YB1 and cell proliferation, migration, invasion and stress granules (SGs) in NPC, and the relationship between YB1 expression and clinical characteristics and prognosis of NPC patients. We analyzed the mRNA expression of YBX1 in head and neck squamous carcinoma (HNSC) and NPC in databases, investigated the functions of YB1 in cell proliferation, migration and invasion and SGs formation of NPC cells, and detected expression of YB1 protein in a large scale of NPC samples and analyzed their association with clinicopathological features and prognostic significance of NPC patients. YBX1 mRNA was significantly high expression in HNSC and NPC by bioinformatic analysis, and higher expression of YBX1 mRNA indicated poorer prognosis of HNSC patients. Clinically, the expression of YB1 in NPC tissues was significantly higher than these in the control nasopharyngeal epithelial tissues. We further found that the expression of YB1 had an evidently positive relation with advanced clinical stages of patients with NPC. The overall survival rates (OS) were significantly lower for NPC patients with positive expression of YB1. Multivariate analysis confirmed that positive expression of YB1 was the independent poorer prognostic factor for patients with NPC. Moreover, compared with the immortalized nasopharyngeal epithelial cell line (NP69), the basal level of YB1 in NPC cell lines was significantly higher. Knocking down YB1 may inhibit Akt/mTOR pathway in NPC cells. Knocking down YB1 by small interfering RNAs can reduce the ability of proliferation, migration, invasion and SGs formation of NPC cells. The expression of YB1 in NPC cell lines or patients with NPC was significantly higher. The high expression of YB1 protein may act as one valuable independent biomarker to predict poor prognosis for patients with NPC. Knocking down YB1 may release the malignant phenotype of NPC cells.
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Li Y, Kong X, Xuan L, Wang Z, Huang YH. Prolactin and endocrine therapy resistance in breast cancer: The next potential hope for breast cancer treatment. J Cell Mol Med 2021; 25:10327-10348. [PMID: 34651424 PMCID: PMC8581311 DOI: 10.1111/jcmm.16946] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/21/2021] [Accepted: 09/19/2021] [Indexed: 12/20/2022] Open
Abstract
Breast cancer, a hormone‐dependent tumour, generally includes four molecular subtypes (luminal A, luminal B, HER2 enriched and triple‐negative) based on oestrogen receptor, progesterone receptor and human epidermal growth factor receptor‐2. Multiple hormones in the body regulate the development of breast cancer. Endocrine therapy is one of the primary treatments for hormone‐receptor‐positive breast cancer, but endocrine resistance is the primary clinical cause of treatment failure. Prolactin (PRL) is a protein hormone secreted by the pituitary gland, mainly promoting mammary gland growth, stimulating and maintaining lactation. Previous studies suggest that high PRL levels can increase the risk of invasive breast cancer in women. The expression levels of PRL and PRLR in breast cancer cells and breast cancer tissues are elevated in most ER+ and ER− tumours. PRL activates downstream signalling pathways and affects endocrine therapy resistance by combining with prolactin receptor (PRLR). In this review, we illustrated and summarized the correlations between endocrine therapy resistance in breast cancer and PRL, as well as the pathophysiological mechanisms and clinical practices. The study on PRL and its receptor would help explore reversing endocrine therapy‐resistance for breast cancer.
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Affiliation(s)
- Yuan Li
- Department of Breast Surgical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiangyi Kong
- Department of Breast Surgical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lixue Xuan
- Department of Breast Surgical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhongzhao Wang
- Department of Breast Surgical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yen-Hua Huang
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
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Abstract
Endocrine therapy is a standard treatment offered to patients with ERα (estrogen receptor α)-positive breast cancer. In endocrine therapy, ERα is either directly targeted by anti-estrogens or indirectly by aromatase inhibitors which cause estrogen deficiency. Resistance to these drugs (endocrine resistance) compromises the efficiency of this treatment and requires additional measures. Endocrine resistance is often caused by deregulation of the PI3K/AKT/mTOR pathway and/or cyclin-dependent kinase 4 and 6 activities allowing inhibitors of these factors to be used clinically to counteract endocrine resistance. The nuclear mechanisms involved in endocrine resistance are beginning to emerge. Exploring these mechanisms may reveal additional druggable targets, which could help to further improve patients' outcome in an endocrine resistance setting. This review intends to summarize our current knowledge on the nuclear mechanisms linked to endocrine resistance.
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Affiliation(s)
- Jürgen Dittmer
- Clinic for Gynecology, Martin Luther University Halle-Wittenberg, Halle, Germany
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Hamadneh L, Al-Lakkis L, Alhusban AA, Tarawneh S, Abu-Irmaileh B, Albustanji S, Al-Bawab AQ. Changes in Lactate Production, Lactate Dehydrogenase Genes Expression and DNA Methylation in Response to Tamoxifen Resistance Development in MCF-7 Cell Line. Genes (Basel) 2021; 12:genes12050777. [PMID: 34069745 PMCID: PMC8160872 DOI: 10.3390/genes12050777] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 05/13/2021] [Accepted: 05/18/2021] [Indexed: 12/25/2022] Open
Abstract
Lactate dehydrogenase (LDH) is a key enzyme in the last step of glycolysis, playing a role in the pyruvate-to-lactate reaction. It is associated with the prognosis and metastasis of many cancers, including breast cancer. In this study, we investigated the changes in LDH gene expression and lactate concentrations in the culture media during tamoxifen resistance development in the MCF-7 cell line, and examined LDHB promoter methylation levels. An upregulation of 2.9 times of LDHB gene expression was observed around the IC50 concentration of tamoxifen in treated cells, while fluctuation in LDHA gene expression levels was found. Furthermore, morphological changes in the cell shape accompanied the changes in gene expression. Bisulfate treatment followed by sequencing of the LDHB promoter was performed to track any change in methylation levels; hypomethylation of CpG areas was found, suggesting that gene expression upregulation could be due to methylation level changes. Changes in LDHA and LDHB gene expression were correlated with the increase in lactate concentration in the culture media of treated MCF-7 cells.
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Affiliation(s)
- Lama Hamadneh
- Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman 11733, Jordan; (L.A.-L.); (A.A.A.); (S.A.); (A.Q.A.-B.)
- Correspondence: ; Tel.: +96-277-777-1900
| | - Lara Al-Lakkis
- Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman 11733, Jordan; (L.A.-L.); (A.A.A.); (S.A.); (A.Q.A.-B.)
| | - Ala A. Alhusban
- Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman 11733, Jordan; (L.A.-L.); (A.A.A.); (S.A.); (A.Q.A.-B.)
| | - Shahd Tarawneh
- Faculty of Science, Mutah University, Karak 61710, Jordan;
| | - Bashaer Abu-Irmaileh
- Hamdi Mango Center for Scientific Research, The University of Jordan, Amman 11942, Jordan;
| | - Sokiyna Albustanji
- Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman 11733, Jordan; (L.A.-L.); (A.A.A.); (S.A.); (A.Q.A.-B.)
| | - Abdel Qader Al-Bawab
- Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman 11733, Jordan; (L.A.-L.); (A.A.A.); (S.A.); (A.Q.A.-B.)
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Tiwari A, Iida M, Kosnopfel C, Abbariki M, Menegakis A, Fehrenbacher B, Maier J, Schaller M, Brucker SY, Wheeler DL, Harari PM, Rothbauer U, Schittek B, Zips D, Toulany M. Blocking Y-Box Binding Protein-1 through Simultaneous Targeting of PI3K and MAPK in Triple Negative Breast Cancers. Cancers (Basel) 2020; 12:cancers12102795. [PMID: 33003386 PMCID: PMC7601769 DOI: 10.3390/cancers12102795] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 09/25/2020] [Indexed: 12/22/2022] Open
Abstract
Simple Summary Triple-negative breast cancer (TNBC) is associated with the high rates of relapse and metastasis and poor survival. YB-1 is overexpressed in TNBC tumor tissues. In the present study, we demonstrated that S102 phosphorylation of YB-1 in TNBC cell lines depend on the mutation status of the components of the MAPK/ERK and PI3K/Akt pathways. Simultaneous targeting of MEK and PI3K was found to be the most effective approach to block YB-1 phosphorylation and to inhibit YB-1 dependent cell proliferation. YBX1 knockout was sufficient to block TNBC tumor growth. Abstract The multifunctional protein Y-box binding protein-1 (YB-1) regulates all the so far described cancer hallmarks including cell proliferation and survival. The MAPK/ERK and PI3K/Akt pathways are also the major pathways involved in cell growth, proliferation, and survival, and are the frequently hyperactivated pathways in human cancers. A gain of function mutation in KRAS mainly leads to the constitutive activation of the MAPK pathway, while the activation of the PI3K/Akt pathway occurs either through the loss of PTEN or a gain of function mutation of the catalytic subunit alpha of PI3K (PIK3CA). In this study, we investigated the underlying signaling pathway involved in YB-1 phosphorylation at serine 102 (S102) in KRAS(G13D)-mutated triple-negative breast cancer (TNBC) MDA-MB-231 cells versus PIK3CA(H1047R)/PTEN(E307K) mutated TNBC MDA-MB-453 cells. Our data demonstrate that S102 phosphorylation of YB-1 in KRAS-mutated cells is mainly dependent on the MAPK/ERK pathway, while in PIK3CA/PTEN-mutated cells, YB-1 S102 phosphorylation is entirely dependent on the PI3K/Akt pathway. Independent of the individual dominant pathway regulating YB-1 phosphorylation, dual targeting of MEK and PI3K efficiently inhibited YB-1 phosphorylation and blocked cell proliferation. This represents functional crosstalk between the two pathways. Our data obtained from the experiments, applying pharmacological inhibitors and genetic approaches, shows that YB-1 is a key player in cell proliferation, clonogenic activity, and tumor growth of TNBC cells through the MAPK and PI3K pathways. Therefore, dual inhibition of these two pathways or single targeting of YB-1 may be an effective strategy to treat TNBC.
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Affiliation(s)
- Aadhya Tiwari
- Division of Radiobiology and Molecular Environmental Research, Department of Radiation Oncology, University of Tuebingen, 72076 Tuebingen, Germany; (A.T.); (D.Z.)
- Department of Radiation Oncology, University of Tuebingen, 72076 Tuebingen, Germany;
- German Cancer Consortium (DKTK), Partner Site Tuebingen and German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Mari Iida
- Department of Human Oncology, University of Wisconsin, Madison, WI 53705, USA; (M.I.); (M.A.); (D.L.W.); (P.M.H.)
| | - Corinna Kosnopfel
- Department of Dermatology, University of Tuebingen, 72076 Tuebingen, Germany; (C.K.); (B.F.); (M.S.); (B.S.)
| | - Mahyar Abbariki
- Department of Human Oncology, University of Wisconsin, Madison, WI 53705, USA; (M.I.); (M.A.); (D.L.W.); (P.M.H.)
| | - Apostolos Menegakis
- Department of Radiation Oncology, University of Tuebingen, 72076 Tuebingen, Germany;
- German Cancer Consortium (DKTK), Partner Site Tuebingen and German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Birgit Fehrenbacher
- Department of Dermatology, University of Tuebingen, 72076 Tuebingen, Germany; (C.K.); (B.F.); (M.S.); (B.S.)
| | - Julia Maier
- Natural and Medical Sciences Institute, University of Tuebingen, 72770 Reutlingen, Germany; (J.M.); (U.R.)
- Pharmaceutical Biotechnology, University of Tuebingen, 72076 Tuebingen, Germany
| | - Martin Schaller
- Department of Dermatology, University of Tuebingen, 72076 Tuebingen, Germany; (C.K.); (B.F.); (M.S.); (B.S.)
| | - Sara Y. Brucker
- Department of Women’s Health, University of Tuebingen, 72076 Tuebingen, Germany;
| | - Deric L. Wheeler
- Department of Human Oncology, University of Wisconsin, Madison, WI 53705, USA; (M.I.); (M.A.); (D.L.W.); (P.M.H.)
| | - Paul M. Harari
- Department of Human Oncology, University of Wisconsin, Madison, WI 53705, USA; (M.I.); (M.A.); (D.L.W.); (P.M.H.)
| | - Ulrich Rothbauer
- Natural and Medical Sciences Institute, University of Tuebingen, 72770 Reutlingen, Germany; (J.M.); (U.R.)
- Pharmaceutical Biotechnology, University of Tuebingen, 72076 Tuebingen, Germany
| | - Birgit Schittek
- Department of Dermatology, University of Tuebingen, 72076 Tuebingen, Germany; (C.K.); (B.F.); (M.S.); (B.S.)
| | - Daniel Zips
- Division of Radiobiology and Molecular Environmental Research, Department of Radiation Oncology, University of Tuebingen, 72076 Tuebingen, Germany; (A.T.); (D.Z.)
- Department of Radiation Oncology, University of Tuebingen, 72076 Tuebingen, Germany;
- German Cancer Consortium (DKTK), Partner Site Tuebingen and German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Mahmoud Toulany
- Division of Radiobiology and Molecular Environmental Research, Department of Radiation Oncology, University of Tuebingen, 72076 Tuebingen, Germany; (A.T.); (D.Z.)
- Department of Radiation Oncology, University of Tuebingen, 72076 Tuebingen, Germany;
- German Cancer Consortium (DKTK), Partner Site Tuebingen and German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
- Correspondence: ; Tel.: +49-7071-29-85832
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Vellky JE, Ricke WA. Development and prevalence of castration-resistant prostate cancer subtypes. Neoplasia 2020; 22:566-575. [PMID: 32980775 PMCID: PMC7522286 DOI: 10.1016/j.neo.2020.09.002] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 09/01/2020] [Accepted: 09/03/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Castration-resistant prostate cancer (CRPC) occurs when prostate cancer (CaP) progresses under therapy-induced castrate conditions. Several mechanisms have been proposed to explain this acquired resistance, many of which are driven by androgen receptor (AR). Recent findings, however, sub-classified CRPC by downregulation/absence of AR in certain subtypes that consequently do not respond to anti-androgen therapies. To highlight the significance of CRPC sub-classification, we reviewed the development and treatment of CRPC, AR downregulation in CRPC, and summarized recent reports on the prevalence of CRPC subtypes. METHODS Using a medline-based literature search, we reviewed mechanisms of CRPC development, current treatment schemes, and assessed the prevalence of AR low/negative subtypes of CRPC. Additionally, we performed immunohistochemical staining on human CRPC specimens to quantify AR expression across CRPC subtypes. RESULTS In the majority of cases, CRPC continues to rely on AR signaling, which can be augmented in castrate-conditions through a variety of mechanisms. However, recently low/negative AR expression patterns were identified in a significant proportion of patient samples from a multitude of independent studies. In these AR low/negative cases, we postulated that AR protein may be downregulated by (1) promoter methylation, (2) transcriptional regulation, (3) post-transcriptional regulation by microRNA or RNA-binding-proteins, or (4) post-translational ubiquitination-mediated degradation. CONCLUSIONS Here, we discussed mechanisms of CRPC development and summarized the overall prevalence of CRPC subtypes; interestingly, AR low/negative CRPC represented a considerable proportion of diagnoses. Because these subtypes cannot be effectively treated with AR-targeted therapeutics, a better understanding of AR low/negative subtypes could lead to better treatment strategies and increased survival.
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Affiliation(s)
- Jordan E Vellky
- Department of Urology, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave., Madison, WI 53705, USA; Cancer Biology Graduate Program, University of Wisconsin-Madison, Wisconsin Institute for Medical Research, 1111 Highland Ave., Madison, WI 53705, USA; Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave., Madison, WI 53705, USA
| | - William A Ricke
- Department of Urology, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave., Madison, WI 53705, USA; Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave., Madison, WI 53705, USA; George M. O'Brien Research Center of Excellence, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave., Madison, WI 53705, USA.
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11
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Luo Y, Kishi S, Sasaki T, Ohmori H, Fujiwara-Tani R, Mori S, Goto K, Nishiguchi Y, Mori T, Kawahara I, Kondoh M, Kuniyasu H. Targeting claudin-4 enhances chemosensitivity in breast cancer. Cancer Sci 2020; 111:1840-1850. [PMID: 32086991 PMCID: PMC7226188 DOI: 10.1111/cas.14361] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 02/05/2020] [Accepted: 02/16/2020] [Indexed: 12/11/2022] Open
Abstract
Triple negative breast cancer (TNBC) is characterized by highly aggressive phenotype, limited treatment options and a poor prognosis. In the present study, we examined the therapeutic effect of anti–claudin (CLDN)‐4 extracellular domain antibody, 4D3, on TNBC. When the expression of CLDN4 and CLDN1 in invasive ductal carcinoma (IDC) was examined in 114 IDC (78 cases from 2004 to 2009 in a single center and 36 cases of tissues array), CLDN1 had lower expression than CLDN4 and was correlated with histological grade. In contrast, expression of CLDN4 was correlated with histological grade, receptor subtype, and stage. CLDN4 expression in human IDC cell lines MCF‐7 (luminal subtype) and MDA‐468 (TNBC) was at the same level. In both cells, paclitaxel (PTX)‐induced growth suppression was enhanced by 4D3. Furthermore, 4D3 increased both intracellular PTX concentration (in both cells) and apoptosis. In the mouse model, 4D3 promoted the antitumor effect of PTX on subcutaneous tumors and reduced lung metastasis. The combination of PTX and 4D3 reduced M2 macrophages and mesenchymal stem cells in the tumor. 4D3 also reduced stemness of the tumors and increased the intratumoral pH. Moreover, concurrent treatment with 4D3, PTX and tamoxifen, or with PTX and tamoxifen in MDA‐468 also showed the same level of antitumor activity and survival as MCF‐7. Furthermore, in a bone metastasis model, combination of PTX and bisphosphonate with 4D3 promoted tumor growth in both cells. Thus, CLDN4 targeting of the antibody facilitated existing therapeutic effects.
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Affiliation(s)
- Yi Luo
- Department of Molecular Pathology, Nara Medical University, Nara, Japan.,Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Japan
| | - Shingo Kishi
- Department of Molecular Pathology, Nara Medical University, Nara, Japan
| | - Takamitsu Sasaki
- Department of Molecular Pathology, Nara Medical University, Nara, Japan
| | - Hitoshi Ohmori
- Department of Molecular Pathology, Nara Medical University, Nara, Japan
| | | | - Shiori Mori
- Department of Molecular Pathology, Nara Medical University, Nara, Japan
| | - Kei Goto
- Department of Molecular Pathology, Nara Medical University, Nara, Japan
| | - Yukiko Nishiguchi
- Department of Molecular Pathology, Nara Medical University, Nara, Japan
| | - Takuya Mori
- Department of Molecular Pathology, Nara Medical University, Nara, Japan
| | - Isao Kawahara
- Department of Molecular Pathology, Nara Medical University, Nara, Japan
| | - Masuo Kondoh
- Drug Innovation Center, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan
| | - Hiroki Kuniyasu
- Department of Molecular Pathology, Nara Medical University, Nara, Japan
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12
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Watari K, Shibata T, Fujita H, Shinoda A, Murakami Y, Abe H, Kawahara A, Ito H, Akiba J, Yoshida S, Kuwano M, Ono M. NDRG1 activates VEGF-A-induced angiogenesis through PLCγ1/ERK signaling in mouse vascular endothelial cells. Commun Biol 2020; 3:107. [PMID: 32144393 PMCID: PMC7060337 DOI: 10.1038/s42003-020-0829-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 02/12/2020] [Indexed: 12/15/2022] Open
Abstract
Many diseases, including cancer, have been associated with impaired regulation of angiogenesis, of which vascular endothelial growth factor (VEGF)-A is a key regulator. Here, we test the contribution of N-myc downstream regulated gene 1 (NDRG1) to VEGF-A-induced angiogenesis in vascular endothelial cells (ECs). Ndrg1−/− mice exhibit impaired VEGF-A-induced angiogenesis in corneas. Tumor angiogenesis induced by cancer cells that express high levels of VEGF-A was also reduced in a mouse dorsal air sac assay. Furthermore, NDRG1 deficiency in ECs prevented angiogenic sprouting from the aorta and the activation of phospholipase Cγ1 (PLCγ1) and ERK1/2 by VEGF-A without affecting the expression and function of VEGFR2. Finally, we show that NDRG1 formed a complex with PLCγ1 through its phosphorylation sites, and the inhibition of PLCγ1 dramatically suppressed VEGF-A-induced angiogenesis in the mouse cornea, suggesting an essential role of NDRG1 in VEGF-A-induced angiogenesis through PLCγ1 signaling. Kosuke Watari et al. show that N-myc downstream-regulated gene 1 (NDRG1) stimulates new blood vessel formation that is induced by VEGF-A, using Ndrg1 knockout mice. They find that PLCγ1/ERK signaling mediates this regulation, providing mechanistic insights into how vascular endothelial cells form new vessels.
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Affiliation(s)
- Kosuke Watari
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Tomohiro Shibata
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Hideaki Fujita
- Faculty of Pharmaceutical Sciences, Nagasaki International University, Sasebo, 859-3243, Japan
| | - Ai Shinoda
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Yuichi Murakami
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan.,Cancer Translational Research Center, St. Mary's Institute of Health Sciences, Kurume, 830-8543, Japan
| | - Hideyuki Abe
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, 830-0011, Japan
| | - Akihiko Kawahara
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, 830-0011, Japan
| | - Hiroshi Ito
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan.,Department of Neurosurgery, Faculty of Medicine, Saga University, Saga, 849-8501, Japan
| | - Jun Akiba
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, 830-0011, Japan
| | - Shigeo Yoshida
- Department of Ophthalmology, Kurume University School of Medicine, Kurume, 830-0011, Japan
| | - Michihiko Kuwano
- Cancer Translational Research Center, St. Mary's Institute of Health Sciences, Kurume, 830-8543, Japan
| | - Mayumi Ono
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan.
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13
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Yang F, Chen S, He S, Huo Q, Hu Y, Xie N. YB-1 interplays with ERα to regulate the stemness and differentiation of ER-positive breast cancer stem cells. Am J Cancer Res 2020; 10:3816-3832. [PMID: 32206124 PMCID: PMC7069074 DOI: 10.7150/thno.41014] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 01/21/2020] [Indexed: 02/06/2023] Open
Abstract
Background: Some stemness-associated transcription factors consistently play essential roles in the maintenance of pluripotency or induce the differentiation of cancer stem cells (CSCs). However, the regulatory mechanism of CSC stemness mediated by transcription factors has not been extensively explored. Here, we show that two transcription factors (YB-1 and ERα), which are simultaneously highly expressed in estrogen receptor (ER)-positive CSCs, interact with each other to regulate the stemness and differentiation of ER-positive CSCs. Methods: The expression of YB-1 was examined in ER-positive CSCs and patient specimens. Western blot, real-time PCR, cell viability analysis, tumorsphere formation assay and subcutaneous tumorigenesis assays were used to study the stemness functions of YB-1 and ERα in CSCs. The relationship between YB-1 and ERα in cells was studied by promoter activity analysis, the electrophoretic mobility shift assay (EMSA) and the Co-IP assay. The mechanisms and functional significance of YB-1 in the sensitivity of CSCs to tamoxifen were further investigated with both in vitro and in vivo models. Results: YB-1 was aberrantly upregulated in the cancerous tissue of ER-positive breast cancer patients and in CSCs. Knockdown of YB-1 in ER-positive CSCs significantly inhibited cell stemness and induced differentiation, and the expression of YB-1 could be regulated by estrogen signaling and ERα in ER-positive breast CSCs. The Co-IP results showed that YB-1 interacted directly with ERα specifically in ER-positive non-CSCs and that YB-1 induced ERα degradation by ubiquitination via direct interaction in differentiated cells. Cell differentiation induced by FBS could inhibit YB-1 phosphorylation and promote YB-1 protein transfer from the nucleus to the cytoplasm. Moreover, cell differentiation induced by targeting inhibited the expression of YB-1 in ER-positive CSCs, which increased the sensitivity of cells to tamoxifen in vitro and in vivo. Conclusion: The ERα/YB-1 axis has an important role in the regulation of ER-positive breast cancer stemness. The dephosphorylation of YB-1 and the interaction between YB-1 and ERα may be the switch that initiates the differentiation of ER-positive CSCs. Targeting YB-1 to sensitize ER-positive CSCs to antiestrogen therapy might represent a new therapeutic strategy that warrants further exploration.
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14
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Shibata T, Watari K, Kawahara A, Sudo T, Hattori S, Murakami Y, Izumi H, Itou J, Toi M, Akiba J, Akagi Y, Tanaka M, Kuwano M, Ono M. Targeting Phosphorylation of Y-Box-Binding Protein YBX1 by TAS0612 and Everolimus in Overcoming Antiestrogen Resistance. Mol Cancer Ther 2019; 19:882-894. [PMID: 31879363 DOI: 10.1158/1535-7163.mct-19-0690] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 10/16/2019] [Accepted: 12/18/2019] [Indexed: 11/16/2022]
Abstract
Nuclear expression of Y-box-binding protein (YBX1) is closely correlated with clinical poor outcomes and drug resistance in breast cancer. Nuclear translocation of YBX1 is facilitated by YBX1 phosphorylation at serine 102 by AKT, p70S6K, and p90RSK, and the phosphorylated YBX1 (pYBX1) promotes expression of genes related to drug resistance and cell growth. A forthcoming problem to be addressed is whether targeting the phosphorylation of YBX1 overcomes antiestrogen resistance by progressive breast cancer. Here, we found that increased expression of pYBX1 was accompanied by acquired resistance to antiestrogens, fulvestrant and tamoxifen. Forced expression of YBX1/S102E, a constitutive phosphorylated form, resulted in acquired resistance to fulvestrant. Inversely, YBX1 silencing specifically overcame antiestrogen resistance. Furthermore, treatment with everolimus, an mTORC1 inhibitor, or TAS0612, a novel multikinase inhibitor of AKT, p70S6K, and p90RSK, suppressed YBX1 phosphorylation and overcame antiestrogen resistance in vitro and in vivo IHC analysis revealed that expression of pYBX1 and YBX1 was augmented in patients who experienced recurrence during treatment with adjuvant endocrine therapies. Furthermore, pYBX1 was highly expressed in patients with triple-negative breast cancer compared with other subtypes. TAS0612 also demonstrated antitumor effect against triple-negative breast cancer in vivo Taken together, our findings suggest that pYBX1 represents a potential therapeutic target for treatment of antiestrogen-resistant and progressive breast cancer.
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Affiliation(s)
- Tomohiro Shibata
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Kosuke Watari
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Akihiko Kawahara
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Japan
| | - Tomoya Sudo
- Department of Surgery, Kurume University School of Medicine, Kurume, Japan
| | - Satoshi Hattori
- Department of Integrated Medicine, Biomedical Statistics, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yuichi Murakami
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan.,Cancer Translational Research Center, St. Mary's Institute of Health Sciences, Kurume, Japan
| | - Hiroto Izumi
- Department of Occupational Pneumology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Junji Itou
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masakazu Toi
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Jun Akiba
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Japan
| | - Yoshito Akagi
- Department of Surgery, Kurume University School of Medicine, Kurume, Japan
| | - Maki Tanaka
- Kurume General Hospital, Japan Community Health Care Organization (JCHO), Kurume, Japan
| | - Michihiko Kuwano
- Cancer Translational Research Center, St. Mary's Institute of Health Sciences, Kurume, Japan
| | - Mayumi Ono
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan.
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15
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Tsuboi K, Uematsu C, Yamaguchi Y, Niwa T, Hayashi SI. Tumor microenvironmental growth factors induce long-term estrogen deprivation resistance in breast cancer. Breast Cancer 2019; 26:748-57. [PMID: 31119683 DOI: 10.1007/s12282-019-00978-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 05/17/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND Hormonal therapy is an effective treatment for luminal-like breast cancer. Aromatase inhibitor (AI) is widely used for estrogen receptor-positive, postmenopausal breast cancers. However, resistance is occurred and becomes a serious clinical concern. In general, progression of cancer strongly depends on tumor microenvironment, which may, therefore, also contribute to the development of AI resistance. METHODS We evaluated tumor microenvironment-derived factors with respect to AI resistance using typical estrogen receptor-positive breast cancer cell lines. We established tumor microenvironment-dependent AI-resistant models and elucidated the underlying mechanisms. RESULTS T-47D cells had a higher dependence on microenvironment-derived factors, such as estrogen or growth factors, for survival than MCF-7 cells. We, therefore, evaluated tumor microenvironment growth factors with respect to AI resistance using T-47D cells. We established three resistant cell lines (V1, V2, and V3) that survived estrogen deprivation and growth factor-supplemented conditions. These cell lines were deficient in estrogen receptor α expression and estrogen-dependent growth. Among six representative growth factors, epidermal growth factor was the most influential. In these models, HER2 protein was overexpressed without gene amplification and intracellular phosphorylation pathways were activated compared to parental cell lines. Molecular targeting inhibitors revealed that V1 and V2 primarily rely on the PI3 K pathway for survival, whereas V3 relies on the MAPK pathway. CONCLUSIONS This study demonstrates the importance of tumor microenvironment-derived factors for the development of AI resistance. These resistant models did not utilize the same resistance mechanism, suggesting that flexible strategies are essential in conquering resistance.
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16
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Kuwano M, Shibata T, Watari K, Ono M. Oncogenic Y-box binding protein-1 as an effective therapeutic target in drug-resistant cancer. Cancer Sci 2019; 110:1536-1543. [PMID: 30903644 PMCID: PMC6500994 DOI: 10.1111/cas.14006] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 03/13/2019] [Accepted: 03/18/2019] [Indexed: 12/30/2022] Open
Abstract
Y-box binding protein-1 (YBX1), a multifunctional oncoprotein containing an evolutionarily conserved cold shock domain, dysregulates a wide range of genes involved in cell proliferation and survival, drug resistance, and chromatin destabilization by cancer. Expression of a multidrug resistance-associated ATP binding cassette transporter gene, ABCB1, as well as growth factor receptor genes, EGFR and HER2/ErbB2, was initially discovered to be transcriptionally activated by YBX1 in cancer cells. Expression of other drug resistance-related genes, MVP/LRP, TOP2A, CD44, CD49f, BCL2, MYC, and androgen receptor (AR), is also transcriptionally activated by YBX1, consistently indicating that YBX1 is involved in tumor drug resistance. Furthermore, there is strong evidence to support that nuclear localization and/or overexpression of YBX1 can predict poor outcomes in patients with more than 20 different tumor types. YBX1 is phosphorylated by kinases, including AKT, p70S6K, and p90RSK, and translocated into the nucleus to promote the transcription of resistance- and malignancy-related genes. Phosphorylated YBX1, therefore, plays a crucial role as a potent transcription factor in cancer. Herein, a novel anticancer therapeutic strategy is presented by targeting activated YBX1 to overcome drug resistance and malignant progression.
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Affiliation(s)
- Michihiko Kuwano
- Cancer Translational Research Center, St. Mary's Institute of Health Sciences, Kurume, Japan
| | - Tomohiro Shibata
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Kosuke Watari
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Mayumi Ono
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
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17
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Shindo N, Fuchida H, Sato M, Watari K, Shibata T, Kuwata K, Miura C, Okamoto K, Hatsuyama Y, Tokunaga K, Sakamoto S, Morimoto S, Abe Y, Shiroishi M, Caaveiro JMM, Ueda T, Tamura T, Matsunaga N, Nakao T, Koyanagi S, Ohdo S, Yamaguchi Y, Hamachi I, Ono M, Ojida A. Selective and reversible modification of kinase cysteines with chlorofluoroacetamides. Nat Chem Biol 2019; 15:250-258. [PMID: 30643284 DOI: 10.1038/s41589-018-0204-3] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 11/16/2018] [Indexed: 01/27/2023]
Abstract
Irreversible inhibition of disease-associated proteins with small molecules is a powerful approach for achieving increased and sustained pharmacological potency. Here, we introduce α-chlorofluoroacetamide (CFA) as a novel warhead of targeted covalent inhibitor (TCI). Despite weak intrinsic reactivity, CFA-appended quinazoline showed high reactivity toward Cys797 of epidermal growth factor receptor (EGFR). In cells, CFA-quinazoline showed higher target specificity for EGFR than the corresponding Michael acceptors in a wide concentration range (0.1-10 μM). The cysteine adduct of the CFA derivative was susceptible to hydrolysis and reversibly yielded intact thiol but was stable in solvent-sequestered ATP-binding pocket of EGFR. This environment-dependent hydrolysis can potentially reduce off-target protein modification by CFA-based drugs. Oral administration of CFA quinazoline NS-062 significantly suppressed tumor growth in a mouse xenograft model. Further, CFA-appended pyrazolopyrimidine irreversibly inhibited Bruton's tyrosine kinase with higher target specificity. These results demonstrate the utility of CFA as a new class warheads for TCI.
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Affiliation(s)
- Naoya Shindo
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Hirokazu Fuchida
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Mami Sato
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Kosuke Watari
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Tomohiro Shibata
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Keiko Kuwata
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Nagoya, Japan
| | - Chizuru Miura
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Kei Okamoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Yuji Hatsuyama
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Keisuke Tokunaga
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Seiichi Sakamoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Satoshi Morimoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshito Abe
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Mitsunori Shiroishi
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Jose M M Caaveiro
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Tadashi Ueda
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Tomonori Tamura
- Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Naoya Matsunaga
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Takaharu Nakao
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Satoru Koyanagi
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Shigehiro Ohdo
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Yasuchika Yamaguchi
- Faculty of Pharmaceutical Sciences, Nagasaki International University, Sasebo, Japan
| | - Itaru Hamachi
- Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - Mayumi Ono
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Akio Ojida
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan.
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18
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Shibata T, Tokunaga E, Hattori S, Watari K, Murakami Y, Yamashita N, Oki E, Itou J, Toi M, Maehara Y, Kuwano M, Ono M. Y-box binding protein YBX1 and its correlated genes as biomarkers for poor outcomes in patients with breast cancer. Oncotarget 2018; 9:37216-37228. [PMID: 30647855 PMCID: PMC6324687 DOI: 10.18632/oncotarget.26469] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 12/05/2018] [Indexed: 01/10/2023] Open
Abstract
The enhanced expression of the Y-box binding protein YBX1 is consistently correlated with poor outcomes or reduced survival of breast cancer patients. However, the mechanism underlying the association between increased YBX1 expression and poor outcomes has yet to be revealed. We searched a database for the top 500 genes that are positively or negatively correlated with YBX1 and with ESR1 in breast cancer patients. We further examined the association between YBX1-correlated genes and breast cancer outcomes in patients at Kyushu University Hospital. More than 60% of genes that are positively correlated with YBX1 are also negatively correlated with ESR1. The enhanced expression levels of the top 20 positively correlated genes mostly predict negative outcomes, while the enhanced expression levels of the top 20 negatively correlated genes mostly predict positive outcomes. Furthermore, in breast cancer patients at Kyushu University Hospital, the expression levels of YBX1 and YBX1-positively correlated genes were significantly higher and the expression levels of genes negatively correlated with YBX1 were significantly lower in patients who relapsed after their primary surgery than in those who did not relapse. The expression of YBX1 together with the expression of its positively or negatively correlated genes may help to predict outcomes as well as resistance to endocrine therapies in breast cancer patients. Determining the expression of YBX1 and its closely correlated genes will contribute to the development of precision therapeutics for breast cancer.
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Affiliation(s)
- Tomohiro Shibata
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Eriko Tokunaga
- National Hospital Organization Kyushu Cancer Center, Fukuoka, Japan
| | - Satoshi Hattori
- Department of Integrated Medicine, Biomedical Statistics, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kosuke Watari
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Yuichi Murakami
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan.,Cancer Translational Research Center, St. Mary's Institute of Health Sciences, Kurume, Japan
| | - Nami Yamashita
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Eiji Oki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Junji Itou
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masakazu Toi
- Department of Breast Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yoshihiko Maehara
- Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Michihiko Kuwano
- Cancer Translational Research Center, St. Mary's Institute of Health Sciences, Kurume, Japan
| | - Mayumi Ono
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
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19
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Ponnusamy L, Mahalingaiah PKS, Chang YW, Singh KP. Reversal of epigenetic aberrations associated with the acquisition of doxorubicin resistance restores drug sensitivity in breast cancer cells. Eur J Pharm Sci 2018; 123:56-69. [DOI: 10.1016/j.ejps.2018.07.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 06/04/2018] [Accepted: 07/12/2018] [Indexed: 12/20/2022]
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20
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Abstract
Homeobox genes are critical in tumor development. An isoform protein of DLX4 called BP1 is expressed in 80% of invasive ductal breast carcinomas. BP1 overexpression is implicated in an aggressive phenotype and poor prognosis. BP1 upregulation is associated with estrogen receptor negativity so those tumors do not respond to antiestrogens. Breast cancer is the second leading cause of death in women. BP1 could serve as both a novel prognostic biomarker for breast cancer and a therapeutic target. In this review, we address the role of BP1 protein in tumorigenesis of breast cancer and four other malignancies. A number of functions of BP1 in cancer are also discussed.
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Affiliation(s)
- Yaoxian Lou
- Department of Biochemistry & Molecular Medicine, George Washington University, Washington, DC 20037, USA
| | - Yassi Fallah
- Department of Oncology, Georgetown University Medical Center, Lombardi Comprehensive Cancer Center, Washington, DC 20057, USA
| | - Kellie Yamane
- NantOmics, Diagnostic Center in Montgomery County, Rockville, MD 20850, USA
| | - Patricia E Berg
- Department of Biochemistry & Molecular Medicine, George Washington University, Washington, DC 20037, USA
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21
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Kundu N, Brekman A, Kim JY, Xiao G, Gao C, Bargonetti J. Estrogen-activated MDM2 disrupts mammary tissue architecture through a p53-independent pathway. Oncotarget 2018; 8:47916-47930. [PMID: 28615518 PMCID: PMC5564615 DOI: 10.18632/oncotarget.18147] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 04/29/2017] [Indexed: 01/10/2023] Open
Abstract
The Cancer Genome Atlas (TCGA) data indicate that high MDM2 expression correlates with all subtypes of breast cancer. Overexpression of MDM2 drives breast oncogenesis in the presence of wild-type or mutant p53 (mtp53). Importantly, estrogen-receptor positive (ER+) breast cancers overexpress MDM2 and estrogen mediates this expression. We previously demonstrated that this estrogen-MDM2 axis activates the proliferation of breast cancer cell lines T47D (mtp53 L194F) and MCF7 (wild-type p53) in a manner independent of increased degradation of wild-type p53 (ie, p53-independently). Herein we present data supporting the role of the estrogen-MDM2 axis in regulating cell proliferation and mammary tissue architecture of MCF7 and T47D cells in a p53-independent manner. Inducible shRNA mediated MDM2 knockdown inhibited colony formation in soft agar, decreased mass size and induced lumen formation in matrigel and also significantly reduced mitosis as seen by decreased phospho-histone H3 positive cells. The knockdown of MDM2 in both cell lines decreased Rb phosphorylation and the level of E2F1 protein. This signaling was through the estrogen receptor because fulvestrant (a selective estrogen receptor degrader) decreased MDM2 protein levels and decreased phosphorylation of Rb. Taken together these data indicate that in some ER+ breast cancers the estrogen-MDM2-Rb-E2F1 axis is a central hub for estrogen-mediated p53-independent signal transduction. This is the first indication that estrogen signaling utilizes the estrogen-MDM2 axis to provoke phosphorylation of Rb and increase E2F1 while promoting abnormal mammary architecture.
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Affiliation(s)
- Nandini Kundu
- The Department of Biological Sciences Hunter College, City University of New York, New York, NY 10065, USA.,PhD Program in Biology, The Graduate Center, City University of New York, New York, NY 10016, USA
| | - Angelika Brekman
- The Department of Biological Sciences Hunter College, City University of New York, New York, NY 10065, USA.,PhD Program in Biochemistry, The Graduate Center, City University of New York, New York, NY 10016, USA
| | - Jun Yeob Kim
- The Department of Biological Sciences Hunter College, City University of New York, New York, NY 10065, USA
| | - Gu Xiao
- The Department of Biological Sciences Hunter College, City University of New York, New York, NY 10065, USA
| | - Chong Gao
- The Department of Biological Sciences Hunter College, City University of New York, New York, NY 10065, USA.,PhD Program in Biology, The Graduate Center, City University of New York, New York, NY 10016, USA
| | - Jill Bargonetti
- The Department of Biological Sciences Hunter College, City University of New York, New York, NY 10065, USA.,PhD Program in Biology, The Graduate Center, City University of New York, New York, NY 10016, USA.,PhD Program in Biochemistry, The Graduate Center, City University of New York, New York, NY 10016, USA.,Department of Cell and Developmental Biology, Weill Cornell Medical College of Cornell University, New York, NY 10065, USA
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22
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Chen J, Zhou C, Li J, Xiang X, Zhang L, Deng J, Xiong J. miR‑21‑5p confers doxorubicin resistance in gastric cancer cells by targeting PTEN and TIMP3. Int J Mol Med 2018; 41:1855-1866. [PMID: 29393355 PMCID: PMC5810196 DOI: 10.3892/ijmm.2018.3405] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 01/04/2018] [Indexed: 12/13/2022] Open
Abstract
Drug resistance and disease recurrence are major obstacles to the effective treatment of cancer, including gastric cancer (GC). However, the mechanisms of drug resistance remain to be fully elucidated. The present study investigated the roles of microRNA (miR)-21-5p in the doxorubicin (DOX) resistance of GC cells and the underlying mechanisms. miR-21-5p expression levels were identified to be inversely correlated with two well-known tumor suppressor genes, phosphatase and tensin homologue and tissue inhibitor of matrix metalloproteinases 3, and were upregulated in GC cell lines in proportion to their degree of resistance. Suppressing miR-21-5p expression partially sensitized SGC7901/DOX cells to DOX, suggesting that knockdown of miR-21-5p expression may be used as a therapeutic strategy to improve GC cell resistance. Importantly, increased miR-21-5p expression levels at diagnosis were correlated with clinicopathological characteristics including advanced stage and poor prognosis, further implying that a relapse of GC may be a consequence of miR-21-5p upregulation, thus providing evidence for the potential utility of miR-21-5p antagonism to sensitize GC cells to DOX chemotherapy.
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Affiliation(s)
- Jun Chen
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Chao Zhou
- Department of Neurology, Jiangxi Provincial People's Hospital, Nanchang, Jiangxi 330006, P.R. China
| | - Junhe Li
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Xiaojun Xiang
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Ling Zhang
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Jun Deng
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Jianping Xiong
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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23
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Campbell TM, Castro MAA, de Oliveira KG, Ponder BAJ, Meyer KB. ERα Binding by Transcription Factors NFIB and YBX1 Enables FGFR2 Signaling to Modulate Estrogen Responsiveness in Breast Cancer. Cancer Res 2017; 78:410-421. [PMID: 29180470 DOI: 10.1158/0008-5472.can-17-1153] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 09/22/2017] [Accepted: 11/06/2017] [Indexed: 01/02/2023]
Abstract
Two opposing clusters of transcription factors (TF) have been associated with the differential risks of estrogen receptor positive or negative breast cancers, but the mechanisms underlying the opposing functions of the two clusters are undefined. In this study, we identified NFIB and YBX1 as novel interactors of the estrogen receptor (ESR1). NFIB and YBX1 are both risk TF associated with progression of ESR1-negative disease. Notably, they both interacted with the ESR1-FOXA1 complex and inhibited the transactivational potential of ESR1. Moreover, signaling through FGFR2, a known risk factor in breast cancer development, augmented these interactions and further repressed ESR1 target gene expression. We therefore show that members of two opposing clusters of risk TFs associated with ESR1-positive and -negative breast cancer can physically interact. We postulate that this interaction forms a toggle between two developmental pathways affected by FGFR2 signaling, possibly offering a junction to exploit therapeutically.Significance: Binding of the transcription factors NFIB and YBX1 to the estrogen receptor can promote an estrogen-independent phenotype that can be reverted by inhibiting FGFR2 signaling. Cancer Res; 78(2); 410-21. ©2017 AACR.
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Affiliation(s)
- Thomas M Campbell
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
| | - Mauro A A Castro
- Bioinformatics and Systems Biology Lab, Federal University of Paraná (UFPR), Polytechnic Center, Curitiba, Brazil
| | - Kelin Gonçalves de Oliveira
- Bioinformatics and Systems Biology Lab, Federal University of Paraná (UFPR), Polytechnic Center, Curitiba, Brazil
| | - Bruce A J Ponder
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
| | - Kerstin B Meyer
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom.
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24
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Ogburn RN, Jin L, Meng H, Fitzgerald MC. Discovery of Tamoxifen and N-Desmethyl Tamoxifen Protein Targets in MCF-7 Cells Using Large-Scale Protein Folding and Stability Measurements. J Proteome Res 2017; 16:4073-4085. [PMID: 28927269 DOI: 10.1021/acs.jproteome.7b00442] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The proteins in an MCF-7 cell line were probed for tamoxifen (TAM) and n-desmethyl tamoxifen (NDT) induced stability changes using the Stability of Proteins from Rates of Oxidation (SPROX) technique in combination with two different quantitative proteomics strategies, including one based on SILAC and one based on isobaric mass tags. Over 1000 proteins were assayed for TAM- and NDT-induced protein stability changes, and a total of 163 and 200 protein hits were identified in the TAM and NDT studies, respectively. A subset of 27 high-confidence protein hits were reproducibly identified with both proteomics strategies and/or with multiple peptide probes. One-third of the high-confidence hits have previously established experimental links to the estrogen receptor, and nearly all of the high-confidence hits have established links to breast cancer. One high-confidence protein hit that has known estrogen receptor binding properties, Y-box binding protein 1 (YBX1), was further validated as a direct binding target of TAM using both the SPROX and pulse proteolysis techniques. Proteins with TAM- and/or NDT-induced expression level changes were also identified in the SILAC-SPROX experiments. These proteins with expression level changes included only a small fraction of those with TAM- and/or NDT-induced stability changes.
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Affiliation(s)
- Ryenne N Ogburn
- Department of Chemistry, Duke University , Durham, North Carolina 27708, United States
| | - Lorrain Jin
- Department of Chemistry, Duke University , Durham, North Carolina 27708, United States
| | - He Meng
- Department of Chemistry, Duke University , Durham, North Carolina 27708, United States
| | - Michael C Fitzgerald
- Department of Chemistry, Duke University , Durham, North Carolina 27708, United States
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25
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Abstract
Breast cancer remains a worldwide public health dilemma and is currently the most common tumour in the globe. Awareness of breast cancer, public attentiveness, and advancement in breast imaging has made a positive impact on recognition and screening of breast cancer. Breast cancer is life-threatening disease in females and the leading cause of mortality among women population. For the previous two decades, studies related to the breast cancer has guided to astonishing advancement in our understanding of the breast cancer, resulting in further proficient treatments. Amongst all the malignant diseases, breast cancer is considered as one of the leading cause of death in post menopausal women accounting for 23% of all cancer deaths. It is a global issue now, but still it is diagnosed in their advanced stages due to the negligence of women regarding the self inspection and clinical examination of the breast. This review addresses anatomy of the breast, risk factors, epidemiology of breast cancer, pathogenesis of breast cancer, stages of breast cancer, diagnostic investigations and treatment including chemotherapy, surgery, targeted therapies, hormone replacement therapy, radiation therapy, complementary therapies, gene therapy and stem-cell therapy etc for breast cancer.
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Affiliation(s)
- Muhammad Akram
- Department of Eastern Medicine and Surgery, Directorate of Medical Sciences, GC University Faisalabad, Old Campus, Allam Iqbal Road, Faisalabad, 38000, Pakistan.
| | - Mehwish Iqbal
- Faculty of Eastern Medicine, Hamdard University Karachi, Main Campus, Sharea Madinat al-Hikmah, Mohammad Bin Qasim Avenue, Karachi, 74600, Sindh, Pakistan
| | - Muhammad Daniyal
- Faculty of Eastern Medicine, Hamdard University Karachi, Main Campus, Sharea Madinat al-Hikmah, Mohammad Bin Qasim Avenue, Karachi, 74600, Sindh, Pakistan
| | - Asmat Ullah Khan
- Laboratory of Neuroanatomy & Neuropsychobiology, Department of Pharmacology, RibeirãoPreto Medical School of the University of São Paulo, AV. Bandeirantes, 3900, RibeirãoPreto, 14049-900, São Paulo, Brazil.,Department of Eastern Medicine and Surgery, School of Medical and Health Sciences, University of Poonch Rawalakot, Hajira Road, Shamsabad, Rawalakot, 12350, Azad Jammu and Kashmir, Pakistan
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26
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Lee S, Lee H, Jeong D, Ham J, Park S, Choi EH, Kim SJ. Cold atmospheric plasma restores tamoxifen sensitivity in resistant MCF-7 breast cancer cell. Free Radic Biol Med 2017; 110:280-290. [PMID: 28666851 DOI: 10.1016/j.freeradbiomed.2017.06.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 06/09/2017] [Accepted: 06/26/2017] [Indexed: 12/23/2022]
Abstract
Cancer recurrence, which is frequently accompanied by chemotherapy, has been a challenge in cancer treatment. This study was carried out to examine the potential applications of the reactive oxygen species (ROS)-producing cold atmospheric plasma (CAP) to overcome the cancer cells' drug resistance, which has been emerging as an alternative therapeutic tool for cancer. For this, we developed a tamoxifen (Tam)-resistant MCF-7 (MCF-7/TamR) breast cancer cell model and examined the effect of CAP on the recovery of Tam sensitivity at the cellular and molecular level. The ROS level was increased 1.9-fold in CAP-treated MCF-7/TamR cells compared to the non-treated cell. CAP was proven to restore sensitivity by up to 50% for MCF-7/TamR cells against Tam after CAP treatment. The comparison of genome-wide expression between the acquisition of Tam resistance and CAP treatment identified 20 genes that commonly showed significant expression changes. Notably, all the genes except two have been oppositely dysregulated in the two cellular statuses, and the majority of them are known to contribute to the acquisition of Tam resistance. The protein expression of selected genes, MX1 and HOXC6, was recovered to that of their parental cell by CAP. Furthermore, the dysregulation of MX1 and HOXC6 in MCF-7/TamR alleviated the drug sensitivity recovery effect of CAP. Taken together, CAP inhibited the growth of Tam-resistant MCF-7 cancer cells and reset it to the Tam-sensitive status by restoring the expression of drug resistance-related genes. These findings may lend credence to CAP as an alternative or complementary tool in the treatment or prevention of Tam-resistant cancer.
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Affiliation(s)
- Seungyeon Lee
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Hyunkyung Lee
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Dawoon Jeong
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Juyeon Ham
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Sungbin Park
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea
| | - Eun Ha Choi
- Plasma Bioscience Research Center, Kwangwoon University, Seoul, Republic of Korea
| | - Sun Jung Kim
- Department of Life Science, Dongguk University-Seoul, Goyang 10326, Republic of Korea.
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