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Li K, Gao S, Ma L, Sun Y, Peng ZY, Wu J, Du N, Ren H, Tang SC, Sun X. Stimulation of Let-7 Maturation by Metformin Improved the Response to Tyrosine Kinase Inhibitor Therapy in an m6A Dependent Manner. Front Oncol 2022; 11:731561. [PMID: 35070958 PMCID: PMC8770959 DOI: 10.3389/fonc.2021.731561] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Accepted: 12/09/2021] [Indexed: 12/29/2022] Open
Abstract
The molecular mechanism of the tyrosine kinase inhibitor (TKI) resistant lung adenocarcinoma is currently unclear, and the role of methylated adenosine at the N6 position in the resistance of cancer stem cells (CSCs) therapy is unknown. This study identified a novel and effective strategy to enhance TKIs therapy response. We first confirmed the sensitization of Metformin enforcing on Osimertinib treatment and revealed the mature miRNAs signatures of the Osimertinib resistant H1975 and HCC827 cells. Let-7b expression was stimulated when adding Metformin and then increasing the therapy sensitivity by decreasing the stem cell groups expanding. Methyltransferase-like 3 (METTL3) increased the pri-Let-7b, decreased both the pre-Let-7b and mature Let-7b, attenuating the Let-7b controlling of stem cell renewal. The addition of Metformin increased the bindings of DNA methyltransferase-3a/b (DNMT3a/b) to the METTL3 promoter. With the help of the readers of NKAP and HNRNPA2B1, the cluster mediated m6A formation on pri-Let-7b processing increased the mature Let-7b, the key player in suppressing Notch signaling and re-captivating Osimertinib treatment. We revealed that the maturation processing signaling stimulated the methylation regulation of the miRNAs, and may determine the stemness control of the therapy resistance. Our findings may open up future drug development, targeting this pathway for lung cancer patients.
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Affiliation(s)
- Kai Li
- Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Shan Gao
- Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Lei Ma
- Department of Anesthesiology and Perioperative Medicine, Operating Centre, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Ye Sun
- Department of Anesthesiology and Operation, Operating Centre, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Zi-Yang Peng
- Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Jie Wu
- Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Ning Du
- Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Hong Ren
- Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
| | - Shou-Ching Tang
- University of Mississippi Medical Center, Cancer Center and Research Institute, University of Mississippi, Jackson, MS, United States
| | - Xin Sun
- Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, China
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Li K, Peng ZY, Gao S, Wang QS, Wang R, Li X, Xiao GD, Zhang J, Ren H, Tang SC, Sun X. M6A associated TSUC7 inhibition contributed to Erlotinib resistance in lung adenocarcinoma through a notch signaling activation dependent way. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2021; 40:325. [PMID: 34656164 PMCID: PMC8520306 DOI: 10.1186/s13046-021-02137-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 10/08/2021] [Indexed: 12/24/2022]
Abstract
Background The small tyrosine kinase inhibitors (TKIs) subversively altered the lung cancer treatments, but patients will inevitably face the therapy resistance and disease recurrence. We aim to explore the potential roles of non-coding RNAs in sensitizing the TKIs effects. Methods: Multiple cellular and molecular detections were applied to confirm the mechanistic regulations and intracellular connections. Results We explored the specific gene features of candidates in association with resistance, and found that m6A controlled the stemness of EMT features through METTL3 and YTHDF2. The miR-146a/Notch signaling was sustained highly activated in a m6A dependent manner, and the m6A regulator of YTHDF2 suppressed TUSC7, both of which contributed to the resistant features. Functionally, the sponge type of TUSC7 regulation of miR-146a inhibited Notch signaling functions, and affected the cancer progression and stem cells’ renewal in Erlotinib resistant PC9 cells (PC9ER) and Erlotinib resistant HCC827 cells (HCC827ER) cells. The Notch signaling functions manipulated the cMYC and DICER inner cytoplasm, and the absence of either cMYC or DICER1 lead to TUSC7 and miR-146a decreasing respectively, formed the closed circle to maintain the balance. Conclusion PC9ER and HCC827ER cells harbored much more stem-like cells, and the resistance could be reversed by Notch signaling inactivation. The intrinsic miR-146 and TUSC7 levels are monitored by m6A effectors, the alternation of either miR-146 or TUSC7 expression could lead to the circling loop to sustain the new homeostasis. Further in clinics, the combined delivery of TKIs and Notch specific inhibitory non-coding RNAs will pave the way for yielding the susceptibility to targeted therapy in lung cancer. Supplementary Information The online version contains supplementary material available at 10.1186/s13046-021-02137-9.
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Affiliation(s)
- Kai Li
- Department of Thoracic Surgery, the Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, the First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an City, 710061, Shaanxi Province, China
| | - Zi-Yang Peng
- Department of Thoracic Surgery, the Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, the First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an City, 710061, Shaanxi Province, China
| | - Shan Gao
- Department of Thoracic Surgery, the Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, the First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an City, 710061, Shaanxi Province, China
| | - Qing-Shi Wang
- Department of Thoracic Surgery, the Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, the First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an City, 710061, Shaanxi Province, China
| | - Rui Wang
- Department of Thoracic Surgery, the Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, the First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an City, 710061, Shaanxi Province, China
| | - Xiang Li
- Department of Thoracic Surgery, the Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, the First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an City, 710061, Shaanxi Province, China.,Department of Pathology, Anatomy & Cell Biology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Guo-Dong Xiao
- Oncology Department, the First Affiliated Hospital of Zhengzhou University, Zheng Zhou City, 450052, Henan Province, China
| | - Jing Zhang
- Department of Thoracic Surgery, the Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, the First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an City, 710061, Shaanxi Province, China
| | - Hong Ren
- Department of Thoracic Surgery, the Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, the First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an City, 710061, Shaanxi Province, China
| | - Shou-Ching Tang
- University of Mississippi Medical Center, Cancer Center and Research Institute, 2500 North State Street, Jackson, MS, 39216, USA.
| | - Xin Sun
- Department of Thoracic Surgery, the Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, the First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an City, 710061, Shaanxi Province, China.
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3
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Identification of miRNAs as diagnostic and prognostic markers in hepatocellular carcinoma. Aging (Albany NY) 2021; 13:6115-6133. [PMID: 33617479 PMCID: PMC7950227 DOI: 10.18632/aging.202606] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 10/27/2020] [Indexed: 12/24/2022]
Abstract
The development of high-throughput technologies has yielded a large amount of data from molecular and epigenetic analysis that could be useful for identifying novel biomarkers of cancers. We analyzed Gene Expression Omnibus (GEO) DataSet micro–ribonucleic acid (miRNA) profiling datasets to identify miRNAs that could have value as diagnostic and prognostic biomarkers in hepatocellular carcinoma (HCC). We adopted several computing methods to identify the functional roles of these miRNAs. Ultimately, via integrated analysis of three GEO DataSets, three differential miRNAs were identified as valuable markers in HCC. Combining the results of receiver operating characteristic (ROC) analyses and Kaplan–Meier Plotter (KM) survival analyses, we identified hsa-let-7e as a novel potential biomarker for HCC diagnosis and prognosis. Then, we found via quantitative reverse-transcription polymerase chain reaction (RT-qPCR) that let-7e was upregulated in HCC tissues and that such upregulation was significantly associated with poor prognosis in HCC. The results of functional analysis indicated that upregulated let-7e promoted tumor cell growth and proliferation. Additionally, via mechanistic analysis, we found that let-7e could regulate mitochondrial apoptosis and autophagy to adjust and control cancer cell proliferation. Therefore, the integrated results of our bioinformatics analyses of both clinical and experimental data showed that let-7e was a novel biomarker for HCC diagnosis and prognosis and might be a new treatment target.
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4
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Liu YD, Zhuang XP, Cai DL, Cao C, Gu QS, Liu XN, Zheng BB, Guan BJ, Yu L, Li JK, Ding HB, Yan DW. Let-7a regulates EV secretion and mitochondrial oxidative phosphorylation by targeting SNAP23 in colorectal cancer. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2021; 40:31. [PMID: 33446221 PMCID: PMC7807815 DOI: 10.1186/s13046-020-01813-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 12/11/2020] [Indexed: 12/24/2022]
Abstract
Background MicroRNAs (miRNAs) are abundant in tumor-derived extracellular vesicles (EVs) and the functions of extracellular miRNA to recipient cells have been extensively studied with tumorigenesis. However, the role of miRNA in EV secretion from cancer cells remains unknown. Methods qPCR and bioinformatics analysis were applied for determining extracellular let-7a expression from CRC patient serum and cells. Nanosight particle tracking analysis was performed for investigating the effect of let-7a on EV secretion. Luciferase reporter assays was used for identifying targeted genes synaptosome-associated protein 23 (SNAP23). In vitro and in vivo assays were used for exploring the function of let-7a/SNAP23 axis in CRC progression. Bioenergetic assays were performed for investigating the role of let-7a/SNAP23 in cellular metabolic reprogramming. Results let-7a miRNA was elevated in serum EVs from CRC patients and was enriched in CRC cell-derived EVs. We determined that let-7a could suppress EV secretion directly targeting SNAP23. In turn, SNAP23 promotes EV secretion of let-7a to downregulate the intracellular let-7a expression. In addition, we found a novel mechanism of let-7a/SNAP23 axis by regulating mitochondrial oxidative phosphorylation (OXPHOS) through Lin28a/SDHA signaling pathway. Conclusions Let-7a plays an essential role in not only inhibiting EV secretion, but also suppressing OXPHOS through SNAP23, resulting in the suppression of CRC progression, suggesting that let-7a/SNAP23 axis could provide not only effective tumor biomarkers but also novel targets for tumor therapeutic strategies. Supplementary Information The online version contains supplementary material available at 10.1186/s13046-020-01813-6.
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Affiliation(s)
- You Dong Liu
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Xiao Peng Zhuang
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Dong Lan Cai
- Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Can Cao
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Qi Sheng Gu
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Xue Ni Liu
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Bin Bin Zheng
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Bing Jie Guan
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Liang Yu
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Ji Kun Li
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Hui Bin Ding
- Department of General Surgery, The People's Hospital of Rugao, Rugao, Jiangsu, 226500, China.
| | - Dong Wang Yan
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China.
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5
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Li X, Wang M, Du N, Liang T, Xiao GD, Li K, Wang JC, Xu CW, Peng ZY, Tang SC, Sun X. Matrine Inhibitory Effect on Self-renewal and Re-sensitization of 5-FU Resistant NSCLC Stem Cells were through Let-7b dependent Downregulation of CCND1. Cell Cycle 2020; 19:3249-3259. [PMID: 33164645 DOI: 10.1080/15384101.2020.1838791] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Matrine is one of the major alkaloids extracted from Sophora flavescens Ait of the traditional Chinese medicine, was the main chemical ingredient of compounds of Kushen injection. The Matrine is considered as a promising therapeutic agent for curing nonsmall cell lung cancer (NSCLC), used either alone or combined with chemotherapeutic agents. In the present study, we focused on the possible roles of Matrine exerted on the self-renewal ability of stem-like cells of the NSCLC group, as well as the cytotoxicity of chemotherapeutic agents, in vitro and in vivo. Here we reported that Matrine inhibits cancer stem-like cell (CSC) properties through upregulation of Let-7b and suppression of the Wnt pathway. Overexpression of Let-7b suppressed the ability of tumorsphere formation, decreased Wnt pathway activation through inhibiting its transcriptional activity in lung CSCs. Further studies revealed that Let-7b directly targeted CCND1 and decreased its expression, whereas Matrine increased Let-7b levels and followed by inactivation of the CCND1/Wnt signaling pathway and inhibition of EMT, which was characterized by loss of epithelial markers and acquisition of a mesenchymal phenotype in lung CSCs. What is more, we found that Matrine increased Let-7b level in an endoribonuclease DICER1-dependent manner. And xenografts in nude mice evidenced that Matrine increased the sensitivity of lung CSCs to 5-FU and inhibited the accumulation of CCND1 in tumor tissues induced by 5-FU. Taken together, these data illustrate the role of Let-7b in regulating lung CSCs traits and DICER1/let-7/CCND1 axis in Matrine or in combination with 5-FU intervention of lung CSCs' expansion, helping to fulfill the anti-cancer action of Matrine.
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Affiliation(s)
- Xiang Li
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, First Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi, P.R.China
| | - Meng Wang
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, First Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi, P.R.China
| | - Ning Du
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, First Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi, P.R.China
| | - Ting Liang
- Department of Radiology, The First Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi, P.R.China.,Department of Biomedical Engineering, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology , Xi'an, Shaanxi, P.R.China
| | - Guo-Dong Xiao
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, First Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi, P.R.China.,Department of Breast Surgery, The First Affiliated Hospital of Zhengzhou University , Zhengzhou, Henan, P.R.China
| | - Kai Li
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, First Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi, P.R.China
| | - Ji-Chang Wang
- Department of Vascular and Endovascular Surgery, First Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi, P.R.China
| | - Chong-Wen Xu
- Department of Otorhinolaryngology, First Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi, P.R.China
| | - Zi-Yang Peng
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, First Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi, P.R.China
| | - Shou-Ching Tang
- University of Mississippi Medical Center, Cancer Center and Research Institute, University of Mississippi , Jackson, Mississippi, USA
| | - Xin Sun
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, First Affiliated Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi, P.R.China
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6
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Fernández V, Martínez-Martínez MÁ, Prieto-Colomina A, Cárdenas A, Soler R, Dori M, Tomasello U, Nomura Y, López-Atalaya JP, Calegari F, Borrell V. Repression of Irs2 by let-7 miRNAs is essential for homeostasis of the telencephalic neuroepithelium. EMBO J 2020; 39:e105479. [PMID: 32985705 PMCID: PMC7604626 DOI: 10.15252/embj.2020105479] [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: 05/01/2020] [Revised: 08/21/2020] [Accepted: 08/28/2020] [Indexed: 01/01/2023] Open
Abstract
Structural integrity and cellular homeostasis of the embryonic stem cell niche are critical for normal tissue development. In the telencephalic neuroepithelium, this is controlled in part by cell adhesion molecules and regulators of progenitor cell lineage, but the specific orchestration of these processes remains unknown. Here, we studied the role of microRNAs in the embryonic telencephalon as key regulators of gene expression. By using the early recombiner Rx-Cre mouse, we identify novel and critical roles of miRNAs in early brain development, demonstrating they are essential to preserve the cellular homeostasis and structural integrity of the telencephalic neuroepithelium. We show that Rx-Cre;DicerF/F mouse embryos have a severe disruption of the telencephalic apical junction belt, followed by invagination of the ventricular surface and formation of hyperproliferative rosettes. Transcriptome analyses and functional experiments in vivo show that these defects result from upregulation of Irs2 upon loss of let-7 miRNAs in an apoptosis-independent manner. Our results reveal an unprecedented relevance of miRNAs in early forebrain development, with potential mechanistic implications in pediatric brain cancer.
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Affiliation(s)
- Virginia Fernández
- Instituto de Neurociencias, Consejo Superior de Investigaciones Científicas & Universidad Miguel Hernández, Sant Joan d'Alacant, Spain
| | - Maria Ángeles Martínez-Martínez
- Instituto de Neurociencias, Consejo Superior de Investigaciones Científicas & Universidad Miguel Hernández, Sant Joan d'Alacant, Spain
| | - Anna Prieto-Colomina
- Instituto de Neurociencias, Consejo Superior de Investigaciones Científicas & Universidad Miguel Hernández, Sant Joan d'Alacant, Spain
| | - Adrián Cárdenas
- Instituto de Neurociencias, Consejo Superior de Investigaciones Científicas & Universidad Miguel Hernández, Sant Joan d'Alacant, Spain
| | - Rafael Soler
- Instituto de Neurociencias, Consejo Superior de Investigaciones Científicas & Universidad Miguel Hernández, Sant Joan d'Alacant, Spain
| | - Martina Dori
- CRTD-Center for Regenerative Therapies, School of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Ugo Tomasello
- Instituto de Neurociencias, Consejo Superior de Investigaciones Científicas & Universidad Miguel Hernández, Sant Joan d'Alacant, Spain
| | - Yuki Nomura
- Instituto de Neurociencias, Consejo Superior de Investigaciones Científicas & Universidad Miguel Hernández, Sant Joan d'Alacant, Spain
| | - José P López-Atalaya
- Instituto de Neurociencias, Consejo Superior de Investigaciones Científicas & Universidad Miguel Hernández, Sant Joan d'Alacant, Spain
| | - Federico Calegari
- CRTD-Center for Regenerative Therapies, School of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Víctor Borrell
- Instituto de Neurociencias, Consejo Superior de Investigaciones Científicas & Universidad Miguel Hernández, Sant Joan d'Alacant, Spain
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7
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Khalife H, Skafi N, Fayyad-Kazan M, Badran B. MicroRNAs in breast cancer: New maestros defining the melody. Cancer Genet 2020; 246-247:18-40. [PMID: 32805688 DOI: 10.1016/j.cancergen.2020.08.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 07/07/2020] [Accepted: 08/03/2020] [Indexed: 02/06/2023]
Abstract
MicroRNAs, short non-coding single-stranded RNAs, are important regulators and gatekeepers of the coding genes in the human genome. MicroRNAs are highly conserved among species and expressed in different tissues and cell types. They are involved in almost all the biological processes as apoptosis, proliferation, cell cycle arrest and differentiation. Playing all these roles, it is not surprising that the deregulation of the microRNA profile causes a number of diseases including cancer. Breast cancer, the most commonly diagnosed malignancy in women, accounts for the highest cancer-related deaths worldwide. Different microRNAs were shown to be up or down regulated in breast cancer. MicroRNAs can function as oncogenes or tumor suppressors according to their targets. In this review, the most common microRNAs implicated in breast cancer are fully illustrated with their targets. Besides, the review highlights the effect of exosomal microRNA on breast cancer and the effect of microRNAs on drug and therapies resistance as well as the miRNA-based therapeutic strategies used until today.
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Affiliation(s)
- Hoda Khalife
- Laboratory of Cancer biology and Molecular Immunology, Faculty of Sciences-I, Lebanese University, Hadath, Beirut, Lebanon.
| | - Najwa Skafi
- Laboratory of Cancer biology and Molecular Immunology, Faculty of Sciences-I, Lebanese University, Hadath, Beirut, Lebanon.
| | - Mohammad Fayyad-Kazan
- Laboratory of Cancer biology and Molecular Immunology, Faculty of Sciences-I, Lebanese University, Hadath, Beirut, Lebanon; Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Beirut, Lebanon.
| | - Bassam Badran
- Laboratory of Cancer biology and Molecular Immunology, Faculty of Sciences-I, Lebanese University, Hadath, Beirut, Lebanon.
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8
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Li X, Liang T, Chen SS, Wang M, Wang R, Li K, Wang JC, Xu CW, Du N, Qin S, Ren H. Matrine suppression of self-renewal was dependent on regulation of LIN28A/Let-7 pathway in breast cancer stem cells. J Cell Biochem 2019; 121:2139-2149. [PMID: 31595560 DOI: 10.1002/jcb.29396] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 08/28/2019] [Indexed: 12/26/2022]
Abstract
Matrine, a natural product extracted from the root of Sophora flavescens Ait, was the main chemical ingredient of compounds of Kushen injection, which has been widely used for its remarkable anticancer effects for years. The underlying mechanisms for Matrine regulations of human breast cancer stem cells (BrCSCs) are barely known. LIN28, a well-characterized suppressor of Let-7 microRNA biogenesis, playing vital roles in regulations of stem cells' renewal and tumorigenesis. Here we show that the compounds of Kushen injection derived Matrine could suppress the BrCSCs differentiation and self-renewal through downregulating the expression of Lin28A, resulting in the inactivation of Wnt pathway through a Let-7b-dependent way. In opposite to Matrine, Cisplatin treatment increases the ability of tumorsphere formation and the expression of BrCSCs markers, which was partially blocked by either Let-7b overexpression or CCND1 inhibition. Furthermore, Matrine sensitized BrCSCs to cisplatin's suppression of cancer expansion in vitro and in vivo. Our study uncovers the role of the LIN28A/Let-7 in BrCSCs renewal, and more importantly, elucidated a novel mechanism by which Matrine induces breast cancer involution.
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Affiliation(s)
- Xiang Li
- Department of Thoracic Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | | | - Si-Si Chen
- Department of Thoracic Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Meng Wang
- Department of Thoracic Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Rui Wang
- Department of Thoracic Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Kai Li
- Department of Thoracic Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Ji-Chang Wang
- Department of Vascular and Endovascular Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Chong-Wen Xu
- Department of Otorhinolaryngology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Ning Du
- Department of Thoracic Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Sida Qin
- Department of Thoracic Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Hong Ren
- Department of Thoracic Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
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9
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Qi Y, Wang D, Huang W, Wang B, Huang D, Xiong F, Chen X, Chen Y. CyclinD1 inhibits dicer and crucial miRNA expression by chromatin modification to promote the progression of intrahepatic cholangiocarcinoma. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2019; 38:413. [PMID: 31590696 PMCID: PMC6781400 DOI: 10.1186/s13046-019-1415-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 09/06/2019] [Indexed: 12/15/2022]
Abstract
Background CyclinD1 is crucial for cell cycling and can regulate the expression of Dicer, a crucial regulator of microRNA maturation. However, little is known on how CyclinD1 regulates Dicer and miRNA expression, and the progression of intrahepatic cholangiocarcinoma (ICC). Methods The expression of CyclinD1 and Dicer in non-tumor cholangiocytes, ICC cells and tissues as well as their association with clinicopathological characteristics and survival were examined. The potential mechanisms by which CyclinD1 regulates Dicer and relative miRNA expression were determined by immunoprecipitation, ChIP sequence, BSP and luciferase reporter assays following induction of CyclinD1 over-expression or silencing and Dicer silencing. The impact of CyclinD1 and/or Dicer silencing on the growth of ICC was tested in vivo. Results Up-regulated CyclinD1 was associated with down-regulated Dicer expression in ICC tissues and poorer overall survival in patients with ICC. CyclinD1 interacted with the nuclear H3K9me3 and SUV39H1 and bound to the Dicer promoter to increase its CpG island methylation in ICC cells. Functionally, CyclinD1 silencing inhibited the malignancy of ICC cells, which were mitigated partially by Dicer silencing in ICC cells. Dicer silencing down-regulated miR-1914-5p and miR-541-5p expression, which targeted and promoted CyclinD1 and CDK6 expression in ICC cells. Conclusions Our findings uncover that CyclinD1 inhibits Dicer expression by chromatin modification to reduce miR-1914-5p/miR-541-5p expression, which positively-feedback enhances CyclinD1 and CDK6 expression and progression of ICC. Electronic supplementary material The online version of this article (10.1186/s13046-019-1415-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yongqiang Qi
- Department of Biliary-Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Da Wang
- Department of Biliary-Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Wenhua Huang
- Department of Biliary-Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Bing Wang
- Department of Biliary-Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Di Huang
- Department of Biliary-Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Fei Xiong
- Department of Biliary-Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Xiaoping Chen
- Department of Hepatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China.
| | - Yongjun Chen
- Department of Biliary-Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China.
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10
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Huang G, Wang M, Li X, Wu J, Chen S, Du N, Li K, Wang J, Xu C, Ren H, Tang SC, Sun X. TUSC7 suppression of Notch activation through sponging MiR-146 recapitulated the asymmetric cell division in lung adenocarcinoma stem cells. Life Sci 2019; 232:116630. [PMID: 31279783 DOI: 10.1016/j.lfs.2019.116630] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 07/01/2019] [Accepted: 07/02/2019] [Indexed: 12/21/2022]
Abstract
AIMS Lung adenocarcinoma consists of multiple therapeutic targets, however, patients will inevitably progress to later stage diagnosis with Tyrosine Kinase Inhibitor treatment resistance. We aim to investigate the roles of non-coding TUSC7 in ordering the cell division tendency, helping to sensitize the resistance in a miRNA incorporating way. MATERIALS AND METHODS Online study of bioinformatics analysis, molecular experiments of luciferase test, immunofluorescence staining and qRT-PCR were applied to dig out the mechanistic regulations. KEY FINDINGS TUSC-7 inhibited the renewal ability of adenocarcinoma stem cells, yielding to asymmetric cell splitting. Informatics analysis and the luciferase testing confirmed the 3'UTR binding site, and revealed the post-transcriptional regulation of NUMB referring to miR-146. TUSC-7 sponged miR-146 and abolished its degradation toward to NUMB, and this integrated cascade made several genes become tangled to full functionality. SIGNIFICANCE TUSC-7 was proved to be one strong suppressive lnc-RNA in lung adenocarcinoma stem cells, functioning through inactivating NOTCH signaling, and the turbulence on division modes precisely pointed to the key mechanisms of stem cells' renewal. The decreasing of tumor suppressive miR-146 was necessary in TUSC-7 conducted renewal repression, despite it alone could also reduce the renewal efficiency, indicating that more complicated non-coding genes may be involved in its regulation.
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Affiliation(s)
- Guanglin Huang
- Department of Thoracic Surgery, The Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, Shaanxi Province 710061, China; Department of General Surgery, Xingyuan Hospital, Yulin City, Shaanxi Province 719000, China
| | - Meng Wang
- Department of Thoracic Surgery, The Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, Shaanxi Province 710061, China
| | - Xiang Li
- Department of Thoracic Surgery, The Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, Shaanxi Province 710061, China
| | - Jie Wu
- Department of Thoracic Surgery, The Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, Shaanxi Province 710061, China
| | - Sisi Chen
- Department of Thoracic Surgery, The Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, Shaanxi Province 710061, China
| | - Ning Du
- Department of Thoracic Surgery, The Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, Shaanxi Province 710061, China
| | - Kai Li
- Department of Thoracic Surgery, The Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, Shaanxi Province 710061, China
| | - Jichang Wang
- Department of Vascular and Endovascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, Shaanxi Province 710061, China
| | - Chongwen Xu
- Department of Otorhinolaryngology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, Shaanxi Province 710061, China
| | - Hong Ren
- Department of Thoracic Surgery, The Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, Shaanxi Province 710061, China
| | - Shou-Ching Tang
- University of Mississippi Medical Center, Cancer Center and Research Institute, 2500 North State Street, Jackson, MS 39216, USA.
| | - Xin Sun
- Department of Thoracic Surgery, The Second Department of Thoracic Surgery, Department of Thoracic Surgery and Oncology, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, Shaanxi Province 710061, China.
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11
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Chirshev E, Oberg KC, Ioffe YJ, Unternaehrer JJ. Let-7 as biomarker, prognostic indicator, and therapy for precision medicine in cancer. Clin Transl Med 2019; 8:24. [PMID: 31468250 PMCID: PMC6715759 DOI: 10.1186/s40169-019-0240-y] [Citation(s) in RCA: 154] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 08/16/2019] [Indexed: 12/23/2022] Open
Abstract
Abnormal regulation and expression of microRNAs (miRNAs) has been documented in various diseases including cancer. The miRNA let-7 (MIRLET7) family controls developmental timing and differentiation. Let-7 loss contributes to carcinogenesis via an increase in its target oncogenes and stemness factors. Let-7 targets include genes regulating the cell cycle, cell signaling, and maintenance of differentiation. It is categorized as a tumor suppressor because it reduces cancer aggressiveness, chemoresistance, and radioresistance. However, in rare situations let-7 acts as an oncogene, increasing cancer migration, invasion, chemoresistance, and expression of genes associated with progression and metastasis. Here, we review let-7 function as tumor suppressor and oncogene, considering let-7 as a potential diagnostic and prognostic marker, and a therapeutic target for cancer treatment. We explain the complex regulation and function of different let-7 family members, pointing to abnormal processes involved in carcinogenesis. Let-7 is a promising option to complement conventional cancer therapy, but requires a tumor specific delivery method to avoid toxicity. While let-7 therapy is not yet established, we make the case that assessing its tumor presence is crucial when choosing therapy. Clinical data demonstrate that let-7 can be used as a biomarker for rational precision medicine decisions, resulting in improved patient survival.
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Affiliation(s)
- Evgeny Chirshev
- Division of Anatomy, Department of Basic Sciences, Loma Linda University, Loma Linda, CA, USA
| | - Kerby C Oberg
- Division of Anatomy and Pediatric Pathology, Loma Linda University, Loma Linda, CA, USA
| | - Yevgeniya J Ioffe
- Gynecology and Obstetrics, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - Juli J Unternaehrer
- Division of Biochemistry, Department of Basic Sciences, Loma Linda University, 11085 Campus Street, Mortensen Hall 219, Loma Linda, CA, 92354, USA.
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12
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Wang M, Wang X, Li Y, Xiao Q, Cui XH, Xiao GD, Wang JC, Xu CW, Ren H, Liu D. Nutlin-3-Induced Sensitization of Non-Small Cell Lung Cancer Stem Cells to Axitinib-Induced Apoptosis Through Repression of Akt1/Wnt Signaling. Oncol Res 2019; 27:987-995. [PMID: 30832755 PMCID: PMC7848271 DOI: 10.3727/096504018x15424918479652] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The aim of this study was to investigate the potential biological activities of nutlin-3 in the regulation of growth and proliferation of non-small cell lung cancer (NSCLC) stem cells (CSCs), which may help in sensitizing to axitinib-induced apoptosis. Nutlin-3 induction of p53 expression was used to test its role in controlling the cell division pattern and apoptosis of NSCLC cells. A549 cells and H460 cells were pretreated with nutlin-3 and then treated with either an Akt1 activator or shRNA-GSK3β, to investigate the potential role of p53 sensitization in the biological effects of axitinib. We also determined the expression levels of GSK3β and p-Akt1 in patients with NSCLC and determined their potential association with survival data using Kaplan-Meier plots and CBIOTAL. Increased p53 expression stimulated the induction of apoptosis by axitinib and promoted asymmetric cell division (ACD) of NSCLC CSCs. The repression of Akt phosphorylation induced by nutlin-3 promoted the ACD of lung CSCs, decreasing the proportion of the stem cell population. In addition to the induction of apoptosis by axitinib through inhibition of Wnt signaling, nutlin-3 treatment further enhanced axitinib-induced apoptosis by inhibiting Akt1/GSK3β/Wnt signaling. The low expression of GSK3β and increased expression of p-Akt in patients with NSCLC were closely associated with the development of NSCLC. TP53 stimulates the induction of apoptosis in NSCLC by axitinib and the ACD of lung CSCs through its regulatory effects on the p53/Akt/GSK3β pathways.
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Affiliation(s)
- Meng Wang
- Department of Thoracic Surgery and Oncology, the Second Department of Thoracic Surgery, Cancer Center, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, P.R. China
| | - Xin Wang
- Department of Gastroenterology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, P.R. China
| | - Yuan Li
- School of Humanities and Social Sciences, Xi'an Jiaotong University, Xi'an, Shaanxi Province, P.R. China
| | - Qiang Xiao
- Department of Medical Oncology, Cancer Center, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, P.R. China
| | - Xiao-Hai Cui
- Department of Thoracic Surgery and Oncology, the Second Department of Thoracic Surgery, Cancer Center, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, P.R. China
| | - Guo-Dong Xiao
- Department of Thoracic Surgery and Oncology, the Second Department of Thoracic Surgery, Cancer Center, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, P.R. China
| | - Ji-Chang Wang
- Department of Vascular and Endovascular Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, P.R. China
| | - Chong-Wen Xu
- Department of Otorhinolaryngology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, P.R. China
| | - Hong Ren
- Department of Thoracic Surgery and Oncology, the Second Department of Thoracic Surgery, Cancer Center, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, P.R. China
| | - Dapeng Liu
- Department of Thoracic Surgery and Oncology, the Second Department of Thoracic Surgery, Cancer Center, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, P.R. China
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13
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Liu JK, Liu HF, Ding Y, Gao GD. Predictive value of microRNA let-7a expression for efficacy and prognosis of radiotherapy in patients with lung cancer brain metastasis: A case-control study. Medicine (Baltimore) 2018; 97:e12847. [PMID: 30383637 PMCID: PMC6221706 DOI: 10.1097/md.0000000000012847] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND As a well-known cancer with high mortality, lung cancer has been implied to be closely associated with brain metastasis. Despite notable advances, effective treatment methods are still in urgent need. This study aims to investigate the value of serum microRNA-let-7a (miR-let-7a) expression in predicting efficacy and prognosis of radiotherapy in patients with lung cancer brain metastasis. METHODS To begin with, reverse transcription quantitative polymerase chain reaction (RT-qPCR) was performed for better understand of the correlation between miR-let-7a and lung cancer. Afterwards, the relationship between serum miR-let-7a expression and radiotherapy efficacy was analyzed by receiver operating characteristic curve analysis. Following successful transfection, RT-qPCR and Western blot assay were utilized for evaluating the involvement of miR-let-7a in regulation of DICER1 expression in lung cancer cell line. Then, whether miR-let-7a was implicated in proliferation and cell cycle distribution of lung cancer cells were confirmed by cell counting kit-8 assay and flow cytometry respectively. RESULTS Initially, it was revealed that serum miR-let-7a expression was decreased in lung cancer. Later, we found that decreased miR-let-7a displayed an unfavorable role in radiotherapy efficacy and overall survival rate of patients with lung cancer brain metastasis. After the successful transfection, the inverse relationship between miR-let-7a and DICER1 expression was uncovered. Meanwhile, biological behaviors of lung cancer cells were presented to be limited after transfection of overexpressed miR-let-7a. CONCLUSION Our findings demonstrated that the lower expression of miR-let-7a in patients with lung cancer brain metastasis was closely related to unfavorable efficacy and prognosis of radiotherapy, and it may be an important predictive biomarker by regulation of DICER1.
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Affiliation(s)
- Ji-Kuan Liu
- Department of Thoracic Surgery, Jining No.1 People's Hospital, Jining
| | - Hong-Feng Liu
- Department of Thoracic Surgery, Jining No.1 People's Hospital, Jining
| | - Yong Ding
- Department of Surgery, Weishan People's Hospital, Weishan, Shandong Province, P.R. China
| | - Guo-Dong Gao
- Department of Thoracic Surgery, Jining No.1 People's Hospital, Jining
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14
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Pang Y, Liu J, Li X, Xiao G, Wang H, Yang G, Li Y, Tang SC, Qin S, Du N, Zhang H, Liu D, Sun X, Ren H. MYC and DNMT3A-mediated DNA methylation represses microRNA-200b in triple negative breast cancer. J Cell Mol Med 2018; 22:6262-6274. [PMID: 30324719 PMCID: PMC6237581 DOI: 10.1111/jcmm.13916] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 07/09/2018] [Accepted: 08/26/2018] [Indexed: 12/16/2022] Open
Abstract
Triple‐negative breast cancer (TNBC) is the most aggressive breast cancer subtype with a poor prognosis. The microRNA‐200 (miR‐200) family has been associated with breast cancer metastasis. However, the epigenetic mechanisms underlying miR‐200b repression in TNBC are not fully elucidated. In this study, we found that MYC proto‐oncogene, bHLH transcription factor (MYC) and DNA methyltransferase 3A (DNMT3A) were highly expressed in TNBC tissues compared with other breast cancer subtypes, while miR‐200b expression was inhibited significantly. We demonstrated that MYC physically interacted with DNMT3A in MDA‐MB‐231 cells. Furthermore, we demonstrated that MYC recruited DNMT3A to the miR‐200b promoter, resulting in proximal CpG island hypermethylation and subsequent miR‐200b repression. MiR‐200b directly inhibited DNMT3A expression and formed a feedback loop in TNBC cells. MiR‐200b overexpression synergistically repressed target genes including zinc‐finger E‐box‐binding homeobox factor 1, Sex determining region Y‐box 2 (SOX2), and CD133, and inhibited the migration, invasion and mammosphere formation of TNBC cells. Our findings reveal that MYC can collaborate with DNMT3A on inducing promoter methylation and miR‐200b silencing, and thereby promotes the epithelial to mesenchymal transition and mammosphere formation of TNBC cells.
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Affiliation(s)
- Yamei Pang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Jian Liu
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Xiang Li
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Guodong Xiao
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Huangzhen Wang
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China.,Department of Surgical Oncology, Baoji Central Hospital, Baoji, Shaanxi Province, China
| | - Ganghua Yang
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Yanbo Li
- Department of Neurology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Shou-Ching Tang
- Breast Cancer Program and Interdisciplinary Translational Research Team, Georgia Regents University Cancer Center, Augusta, Georgia.,Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Sida Qin
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Ning Du
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Henggang Zhang
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China.,Department of Thoracic Surgery and Oncology, People's Hospital of Hanzhong City, Hanzhong, Shaanxi Province, China
| | - Dapeng Liu
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Xin Sun
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Hong Ren
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
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15
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Chang YC, Fong Y, Tsai EM, Chang YG, Chou HL, Wu CY, Teng YN, Liu TC, Yuan SS, Chiu CC. Exogenous C₈-Ceramide Induces Apoptosis by Overproduction of ROS and the Switch of Superoxide Dismutases SOD1 to SOD2 in Human Lung Cancer Cells. Int J Mol Sci 2018; 19:ijms19103010. [PMID: 30279365 PMCID: PMC6213533 DOI: 10.3390/ijms19103010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/25/2018] [Accepted: 09/27/2018] [Indexed: 02/07/2023] Open
Abstract
Ceramides, abundant sphingolipids on the cell membrane, can act as signaling molecules to regulate cellular functions including cell viability. Exogenous ceramide has been shown to exert potent anti-proliferative effects against cancer cells, but little is known about how it affects reactive oxygen species (ROS) in lung cancer cells. In this study, we investigated the effect of N-octanoyl-D-erythro-sphingosine (C₈-ceramide) on human non-small-cell lung cancer H1299 cells. Flow cytometry-based assays indicated that C₈-ceramide increased the level of endogenous ROS in H1299 cells. Interestingly, the ratio of superoxide dismutases (SODs) SOD1 and SOD2 seem to be regulated by C₈-ceramide treatment. Furthermore, the accumulation of cell cycle G1 phase and apoptotic populations in C₈-ceramide-treated H1299 cells was observed. The results of the Western blot showed that C₈-ceramide causes a dramatically increased protein level of cyclin D1, a critical regulator of cell cycle G1/S transition. These results suggest that C₈-ceramide acts as a potent chemotherapeutic agent and may increase the endogenous ROS level by regulating the switch of SOD1 and SOD2, causing the anti-proliferation, and consequently triggering the apoptosis of NSCLC H1299 cells. Accordingly, our works may give a promising strategy for lung cancer treatment in the future.
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Affiliation(s)
- Yuli C Chang
- Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Yao Fong
- Chest Surgery, Chi-Mei Medical Center, Yung Kang City, Tainan 901, Taiwan.
| | - Eing-Mei Tsai
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
| | - Ya-Gin Chang
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Han Lin Chou
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Chang-Yi Wu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan;.
| | - Yen-Ni Teng
- Department of Biological Sciences and Technology, National University of Tainan, Tainan 700, Taiwan.
| | - Ta-Chih Liu
- Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
| | - Shyng-Shiou Yuan
- Translational Research Center, Cancer Center, Department of Medical Research, Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Chien-Chih Chiu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan;.
- Translational Research Center, Cancer Center, Department of Medical Research, Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Research Center for Environment Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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16
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Liang R, Li Y, Wang M, Tang SC, Xiao G, Sun X, Li G, Du N, Liu D, Ren H. MiR-146a promotes the asymmetric division and inhibits the self-renewal ability of breast cancer stem-like cells via indirect upregulation of Let-7. Cell Cycle 2018; 17:1445-1456. [PMID: 29954239 DOI: 10.1080/15384101.2018.1489176] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
MiR-146a could stimulate tumor growth or block tumor proliferation in systemic malignancies, referring to the specific downstream targeted gene. However, its roles in breast cancer stem-like cells (BrCSCs) are barely known. To dig out its mechanistic functions, we explored the indicative roles of miR-146 in preclinical study, regardless of the hormone receptor status, and the positive correlation between miR-146 and better prognosis was proved, as its correlation to Let-7c was. To uncover the implicated mechanisms, we first identified the suppressive role of miR-146a in stem cells' renewal, which was achieved by promoting the asymmetric division of BrCSCs. Let-7c was previously revealed with its suppressive functions in stem-like cells expansion, and miR-146 was predicated and successfully proved to bind to and degrade the 3'UTR of LIN28, a maturation blocker of Let-7 family. Results further showed that miR-146a increased the Let-7c level through degrading LIN28, and LIN28 inhibition is required for miR-146a induction of asymmetric stem cells' division. Moreover, Let-7 controlled Wnt signaling pathway activity could be strengthened due to the miR146 inhibition of H19, later of which was often activated in stem cells group with functional existence of Wnt signaling. H19 itself in turn formed the positive feedback regulation with Let-7. Our results suggested the miR-146a/LIN28/Wnt signaling circle in restraining the symmetric cells division, which was specifically referred to the controlling of the small circle of Let-7c and H19, and together, this dual axis could help to prohibit the stem cells expansion.
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Affiliation(s)
- Rui Liang
- a Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery , Cancer Center of the First Affiliated Hospital of Xi'an Jiaotong University , Xi'an , China.,b Department of Hepatobiliary Chest Surgery , Shaanxi Provincial Corps Hospital of Chinese People's Armed Police Force , Xi'an , China
| | - Yuan Li
- c School of Humanities & Social Sciences , Xi'an Jiaotong University , Xi'an , China
| | - Meng Wang
- a Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery , Cancer Center of the First Affiliated Hospital of Xi'an Jiaotong University , Xi'an , China
| | - Shou-Ching Tang
- d Breast Cancer Program and Interdisciplinary Translational Research Team , Georgia Regents University Cancer Center , Augusta , GA , USA.,e Cancer Institute and Hospital , Tianjin Medical University , Tianjin , China
| | - Guodong Xiao
- a Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery , Cancer Center of the First Affiliated Hospital of Xi'an Jiaotong University , Xi'an , China
| | - Xin Sun
- a Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery , Cancer Center of the First Affiliated Hospital of Xi'an Jiaotong University , Xi'an , China
| | - Gang Li
- a Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery , Cancer Center of the First Affiliated Hospital of Xi'an Jiaotong University , Xi'an , China
| | - Ning Du
- a Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery , Cancer Center of the First Affiliated Hospital of Xi'an Jiaotong University , Xi'an , China
| | - Dapeng Liu
- a Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery , Cancer Center of the First Affiliated Hospital of Xi'an Jiaotong University , Xi'an , China
| | - Hong Ren
- a Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery , Cancer Center of the First Affiliated Hospital of Xi'an Jiaotong University , Xi'an , China
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17
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CCAT1 stimulation of the symmetric division of NSCLC stem cells through activation of the Wnt signalling cascade. Gene Ther 2018; 25:4-12. [DOI: 10.1038/gt.2017.98] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 11/15/2017] [Accepted: 11/22/2017] [Indexed: 01/17/2023]
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18
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Sun X, Xu C, Xiao G, Meng J, Wang J, Tang SC, Qin S, Du N, Li G, Ren H, Liu D. Breast cancer stem-like cells are sensitized to tamoxifen induction of self-renewal inhibition with enforced Let-7c dependent on Wnt blocking. Int J Mol Med 2018; 41:1967-1975. [PMID: 29336465 PMCID: PMC5810214 DOI: 10.3892/ijmm.2018.3388] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 12/04/2017] [Indexed: 01/04/2023] Open
Abstract
Let-7 microRNAs have been reported to have tumor suppressive functions; however, the effect of Let-7 when used in combination with chemotherapies is uncertain, but may have potential for use in clinical practice. In this study, we used RT-qPCR, western blot analysis, cell proliferation assay, flow cytometry analysis, immunohistochemistry (IHC) staining, luciferase assays, cell sorting analysis and xenografted tumor model to explore the role of Let-7 in the chemotherapy sensitivity of breast cancer stem cells. The findings of the current study indicated that Let‑7 enhances the effects of endocrine therapy potentially by regulating the self‑renewal of cancer stem cells. Let‑7c increased the anticancer functions of tamoxifen and reduced the ratio of cancer stem‑like cells (CSCs), sensitizing cells to therapy-induced repression in an estrogen receptor (ER)‑dependent manner. Notably, Let‑7 decreased the tumor formation ability of estrogen‑treated breast CSCs in vivo and suppressed Wnt signaling, which further consolidated the previously hypothesis that Let‑7 decreases the self‑renewal ability, contributing to reduced tumor formation ability of stem cells. The suppressive effects exerted by Let‑7 on stem‑like cells involved Let‑7c/ER/Wnt signaling, and the functions of Let‑7c exerted with tamoxifen were dependent on ER. Taken together, the findings identified a biochemical and functional link between Let‑7 and endocrine therapy in breast CSCs, which may facilitate clinical treatment in the future using delivery of suppressive Let-7.
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Affiliation(s)
- Xin Sun
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Chongwen Xu
- Department of Otorhinolaryngology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Guodong Xiao
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Jinying Meng
- Department of Surgery Oncology, The First People's Hospital of Xianyang City, Xianyang, Shaanxi 712000, P.R. China
| | - Jichang Wang
- Department of Vascular and Endovascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Shou-Ching Tang
- Solid Tumor Clinical Trials, Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| | - Sida Qin
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Ning Du
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Gang Li
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Hong Ren
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Dapeng Liu
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
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Xiao G, Li X, Li G, Zhang B, Xu C, Qin S, Du N, Wang J, Tang SC, Zhang J, Ren H, Chen K, Sun X. MiR-129 blocks estrogen induction of NOTCH signaling activity in breast cancer stem-like cells. Oncotarget 2017; 8:103261-103273. [PMID: 29262559 PMCID: PMC5732725 DOI: 10.18632/oncotarget.21143] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 08/08/2017] [Indexed: 01/01/2023] Open
Abstract
Stem-like cells in tumor group featured the major role in the chemotherapy resistance of breast cancer, and the reduction of stem-like cells helped to perish the tumor when receiving chemotherapy. Smaller stem cells number indicated better therapeutic effect in vitro and in clinics, but how did miR-129 and Notch signaling function in breast cancer stem-like cells (BrCSCs) were unclear yet. Through using sphere forming assay and FACS sorting, we found that miR-129 decreased the proportion of stem-like cells in breast cancer cells. Results further indicated that miR-129 degraded the Estrogen Receptor 1 (ESR1) mRNA through a post-translational manner and contributed to the decline of stem-like cells number, preventing tumor regeneration. Cyclin d1 and DICER 1 were proved to promote Let-7 maturation, and in present study, we proved that miR-129 exhibited inhibition on ESR1 and halted the cyclin d1/DICER 1 sustaining of Let-7, which consequently released the Let-7 degradation of NUMB. The restoration of suppressive NUMB by upregulating miR-129 resulted in NOTCH signaling inhibition. In conclusion, we demonstrated the negative regulation of miR-129 on NOTCH signaling activation in BrCSCs' renewal, which was achieved via continuous suppression on cyclin d1/DICER1 sustaining of Let-7 level, and eventually rescued the targeted inhibition of NUMB. The miR-129/ESR1 signaling played pivotal role in controlling DICER1/Let-7/NOTCH cascade via cyclin d1, revealing the novel mechanism of dual Let-7 in non-coding genes network.
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Affiliation(s)
- Guodong Xiao
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China
| | - Xiang Li
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China
| | - Gang Li
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China
| | - Boxiang Zhang
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China
| | - Chongwen Xu
- Department of Otorhinolaryngology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China
| | - Sida Qin
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China
| | - Ning Du
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China
| | - Jichang Wang
- Department of Vascular and Endovascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi’an 710061, China
| | - Shou-Ching Tang
- Breast Cancer Program and Interdisciplinary Translational Research Team, Georgia Regents University Cancer Center, Augusta, Georgia 30912, United States
- Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - Jing Zhang
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China
| | - Hong Ren
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China
| | - Ke Chen
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xin Sun
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China
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20
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Hassan N, Zhao JT, Sidhu SB. The role of microRNAs in the pathophysiology of adrenal tumors. Mol Cell Endocrinol 2017; 456:36-43. [PMID: 28007658 DOI: 10.1016/j.mce.2016.12.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 11/29/2016] [Accepted: 12/12/2016] [Indexed: 12/16/2022]
Abstract
MicroRNAs (miRNAs) are small noncoding RNAs that regulate gene expression in a sequence-specific manner. Due to its association with an assortment of diseases, miRNAs have been extensively studied in the last decade. In this review, the current understanding of the role of miRNAs in the pathophysiology of adrenal tumors is discussed. The recent contributions of high-throughput miRNA profiling studies have identified miRNAs that have functional and molecular roles in adrenal tumorigenesis. With respect to the biological heterogeneity of adrenal tumors and the limitations of the current treatments, an improved understanding of miRNAs may hold potential diagnostic and therapeutic value to facilitate better clinical management.
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Affiliation(s)
- Nunki Hassan
- Cancer Genetics Laboratory, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Australia; Sydney Medical School Northern, Royal North Shore Hospital, University of Sydney, Australia
| | - Jing Ting Zhao
- Cancer Genetics Laboratory, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Australia; Sydney Medical School Northern, Royal North Shore Hospital, University of Sydney, Australia
| | - Stan B Sidhu
- Cancer Genetics Laboratory, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Australia; Sydney Medical School Northern, Royal North Shore Hospital, University of Sydney, Australia; University of Sydney Endocrine Surgery Unit, Royal North Shore Hospital, Sydney, St Leonards, Sydney, NSW, Australia.
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21
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Wang J, Zhang B, Meng J, Xiao G, Li X, Li G, Qin S, Du N, Zhang J, Zhang J, Xu C, Tang SC, Liang R, Ren H, Sun X. Analysis of risk factors for post-operative complications and prognostic predictors of disease recurrence following definitive treatment of patients with esophageal cancer from two medical centers in Northwest China. Exp Ther Med 2017; 14:2584-2594. [PMID: 28962198 PMCID: PMC5609247 DOI: 10.3892/etm.2017.4835] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 06/02/2017] [Indexed: 02/06/2023] Open
Abstract
Evaluating the clinicopathological features of patients receiving definitive treatment for esophageal cancer may facilitate the identification of patterns and factors associated with post-operative complications, and enable the development of a surveillance strategy for surviving patients at a higher risk of disease recurrence. In the present study, clinical data from 579 patients with esophageal cancer that underwent radical resection of esophagus were collected. These patients were admitted to two medical centers in Northwest China, and information regarding the presence or absence of basic chronic diseases and post-operative results were retrospectively analyzed. The level of selected stem cell markers, including aldehyde dehydrogenase 1, CD133, integrin subunit α 6, integrin subunit β 4 and T-cell factor-4, were determined in esophageal cancer tissue samples in order to determine whether these markers may be useful predictors of disease prognosis and recurrence. Post-operative complications in patients receiving radical resection of the esophagus included respiratory system complications, cardiovascular abnormalities and esophageal anastomotic fistulae. Diabetes, basic respiratory disease and lower pre-surgical serum albumin levels were observed to be individual risk factors associated with post-operative complications, including respiratory system complications of acute respiratory failure and pulmonary infection, cardiovascular abnormalities of atrial fibrillation and arrhythmia, as well as the development of esophageal anastomotic fistulae. Diagnosis of esophageal cancer at later stage was significantly correlated with anastomotic fistula. Molecular detection of stem cell markers for prognosis prediction was achieved by immunohistochemical and immunofluorescence staining assays. The results demonstrated that the presence of stem-like cells in cancer tissues was associated with poor disease prognosis and a high recurrence ratio. In conclusion, the results of the current study suggested that post-operative complications were more likely to occur in patients with diabetes, basic respiratory disease or lower serum albumin levels prior to surgery. Therefore, sufficient intensive peri-operative care, rigorous operative risk assessments, and the selection of the patients with early or mid-stage esophageal cancer, may decrease the risk of post-surgical complications in patients receiving radical resection of the esophagus. In addition, a high ratio of esophageal cancer stem-like cells was associated with cancer recurrence. These results suggest that an intensive surveillance strategy should be implemented in order to facilitate early detection of disease recurrence and improve the clinical management of these patients post-surgery.
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Affiliation(s)
- Jichang Wang
- Department of Vascular and Endovascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Boxiang Zhang
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Jinying Meng
- Department of Surgery Oncology, The First People's Hospital of Xianyang, Xianyang, Shaanxi 712000, P.R. China
| | - Guodong Xiao
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Xiang Li
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Gang Li
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Sida Qin
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Ning Du
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Jia Zhang
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Jing Zhang
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Chongwen Xu
- Department of Otorhinolaryngology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Shou-Ching Tang
- Solid Tumor Clinical Trials, Georgia Cancer Center, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA.,Department of Cancer Biology, Cancer Institute and Hospial, Tianjin Medical University, Tianjin, Hebei 300060, P.R. China
| | - Rui Liang
- Department of Hepatobiliary Chest Surgery, Shaanxi Provincial Corps Hospital of Chinese People's Armed Police Force, Xi'an, Shaanxi 710066, P.R. China
| | - Hong Ren
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Xin Sun
- Department of Thoracic Surgery and Oncology, The Second Department of Thoracic Surgery, Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
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22
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Xiao G, Gao X, Sun X, Yang C, Zhang B, Sun R, Huang G, Li X, Liu J, Du N, Liu D, Liang R, Ren H, Qin S. miR-367 promotes tumor growth by inhibiting FBXW7 in NSCLC. Oncol Rep 2017; 38:1190-1198. [PMID: 28656290 DOI: 10.3892/or.2017.5755] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 06/12/2017] [Indexed: 11/06/2022] Open
Abstract
miR-367 is one of the most abundant miRNAs in human embryonic stem cells (hESCs) and is mainly involved in maintaining the pluripotency of stem cells. However, its role in cancer development remains poorly understood. In the present study, we explored the function and mechanism of the endogenous miR-367 in non-small cell lung cancer (NSCLC). In the present study, we demonstrated that the level of miR-367 in NSCLC was significantly higher than that in adjacent normal tissues, and its upregulation was positively correlated with tumor size, tumor differentiation and tumor-node-metastasis (TNM) stage. miR-367 was an indicator of a poorer prognosis in NSCLC patients. Furthermore, overexpression of miR-367 significantly inhibited apoptosis and enhanced proliferation by promoting cell cycle transition from G1 to S phase. In contrast, knockdown of miR-367 markedly reversed the cellular events observed with miR-367 overexpression. Moreover, we identified that F-box and WD repeat domain-containing 7 (FBXW7) is a novel target of miR-367. It reverses the oncogenic effects of miR-367 by downregulating its substrates, c-Myc and c-Jun, in NSCLC cells. Finally, studies in vivo revealed that knockdown of miR-367 inhibited the growth of xenografts in the nude mice by increasing the expression of FBXW7. In summary, our findings indicate that miR-367 exerts tumor-promoting effect by negatively regulating FBXW7 in NSCLC, and it could become a potential therapeutic target for NSCLC intervention.
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Affiliation(s)
- Guodong Xiao
- Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China
| | - Xiao Gao
- Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China
| | - Xin Sun
- Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China
| | - Chengcheng Yang
- Department of Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China
| | - Boxiang Zhang
- Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China
| | - Ruiying Sun
- Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China
| | - Guanghong Huang
- Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China
| | - Xiang Li
- Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China
| | - Jian Liu
- Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China
| | - Ning Du
- Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China
| | - Dapeng Liu
- Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China
| | - Rui Liang
- Department of Hepatobiliary Chest Surgery, Shaanxi Provincial Corps Hospital of Chinese People's Armed Police Force, Taiyuan, Shanxi, P.R. China
| | - Hong Ren
- Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China
| | - Sida Qin
- Second Department of Thoracic Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China
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23
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Chen C, Wang Y, Wang S, Liu Y, Zhang J, Xu Y, Zhang Z, Bao W, Wu S. LSD1 sustains estrogen-driven endometrial carcinoma cell proliferation through the PI3K/AKT pathway via di-demethylating H3K9 of cyclin D1. Int J Oncol 2017; 50:942-952. [PMID: 28098854 DOI: 10.3892/ijo.2017.3849] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 12/19/2016] [Indexed: 11/05/2022] Open
Abstract
A recent study reported that histone lysine specific demethylase 1 (LSD1, KDM1A) is overexpressed in endometrioid endometrial carcinoma (EEC) and associated with tumor progression as well as poor prognosis. However, the physiological function and mechanism of LSD1 in endometrial cancer (EC) remains largely unknown. In this study, we demonstrate that β-estradiol (E2) treatment increased LSD1 expression via the GPR30/PI3K/AKT pathway in endometrial cancer cells. Both siGPR30 and the PI3K inhibitor LY294002 block this effect. RNAi-mediated silencing of LSD1 abolished estrogen-driven endometrial cancer cell (ECC) proliferation, and induced G1 cell arrest and apoptosis. Mechanistically, we find that LSD1 silencing results in PI3K/AKT signal inactivation, but without the elevation of PTEN expression as expected. This is because the inhibition of LSD1 induces dimethylation of lysine 9 on histone H3 (H3K9m2) accumulation at the promoter region of cyclin D1. Interfering with cyclin D1 leads to PI3K/AKT signal suppression. Re-overexpression of cyclin D1 in LSD1-knockdown ECCs reverses the LSD1 inhibitory action. Our finding connects estrogen signaling with epigenetic regulation in EEC and provides novel experimental support for LSD1 as a potential target for endometrial cancer therapeutics.
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Affiliation(s)
- Chunqin Chen
- Department of Obstetrics and Gynecology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Yanan Wang
- Department of Obstetrics and Gynecology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Shiyu Wang
- Department of Obstetrics and Gynecology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Yuan Liu
- Department of Obstetrics and Gynecology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Jiawen Zhang
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital, Shanghai Tongji University, Shanghai, P.R. China
| | - Yuyao Xu
- Department of Obstetrics and Gynecology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Zhenbo Zhang
- Department of Obstetrics and Gynecology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Wei Bao
- Department of Obstetrics and Gynecology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Sufang Wu
- Department of Obstetrics and Gynecology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
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Jin B, Wang W, Meng XX, Du G, Li J, Zhang SZ, Zhou BH, Fu ZH. Let-7 inhibits self-renewal of hepatocellular cancer stem-like cells through regulating the epithelial-mesenchymal transition and the Wnt signaling pathway. BMC Cancer 2016; 16:863. [PMID: 27821157 PMCID: PMC5100284 DOI: 10.1186/s12885-016-2904-y] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 10/27/2016] [Indexed: 12/16/2022] Open
Abstract
Background Tumor suppressive let-7 miRNAs are universally down-regulated in human hepatocellular carcinoma (HCC) versus normal tissues; however, the roles and related molecular mechanisms of let-7 in HCC stem cells are poorly understood. Methods We examined the inhibitory effect of let-7 miRNAs on the proliferation of MHCC97-H and HCCLM3 hepatic cancer cells by using MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay, which was further confirmed by apoptosis and cell cycle studies. The sphere-forming assay was used to study the effects of let-7a on stem like cells. Through western blot, immunofluorescence and the luciferase-reporter assay, we explored the activity of epithelial-mesenchymal transition (EMT) signaling factors in HCC cells. qRT-PCR was applied to detect miRNA expression levels in clinical tissues. Results Let-7a effectively repressed cell proliferation and viability, and in stem-like cells, also let-7a decreased the efficiency of sphere formation.in stem-like cells. The suppression of EMT signaling factors in HCC cells contributed to let-7’s induced tumor viability repression and Wnt activation repression. Besides, Wnt1 is critical and essential for let-7a functions, and the rescue with recombinant Wnt1 agent abolished the suppressive roles of let-7a on hepatospheres. In clinical HCC and normal tissues, let-7a expression was inversely correlated with Wnt1 expression. Conclusions Let-7 miRNAs, especially let-7a, will be a promising therapeutic strategy in the treatment of HCC through eliminating HCC stem cells, which could be achieved by their inhibitory effect on the Wnt signaling pathway.
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Affiliation(s)
- Bin Jin
- Department of General Surgery, Qilu Hospital of Shandong University, 107 Wenhua West Road, Lixia District, Jinan, Shandong Province, 250012, China.
| | - Wei Wang
- Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University, Jinan, Shandong Province, 250012, China
| | - Xiang-Xin Meng
- Department of General Surgery, The People's Hospital of LingCheng, Dezhou, 253500, China
| | - Gang Du
- Department of General Surgery, Qilu Hospital of Shandong University, 107 Wenhua West Road, Lixia District, Jinan, Shandong Province, 250012, China
| | - Jia Li
- Department of General Surgery, Qilu Hospital of Shandong University, 107 Wenhua West Road, Lixia District, Jinan, Shandong Province, 250012, China
| | - Shi-Zhe Zhang
- Department of General Surgery, Qilu Hospital of Shandong University, 107 Wenhua West Road, Lixia District, Jinan, Shandong Province, 250012, China
| | - Bing-Hai Zhou
- Department of General Surgery, Qilu Hospital of Shandong University, 107 Wenhua West Road, Lixia District, Jinan, Shandong Province, 250012, China
| | - Zhi-Hao Fu
- Department of General Surgery, Qilu Hospital of Shandong University, 107 Wenhua West Road, Lixia District, Jinan, Shandong Province, 250012, China
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25
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Role of let-7 family microRNA in breast cancer. Noncoding RNA Res 2016; 1:77-82. [PMID: 30159414 PMCID: PMC6096426 DOI: 10.1016/j.ncrna.2016.10.003] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 10/29/2016] [Accepted: 10/29/2016] [Indexed: 02/06/2023] Open
Abstract
Metastasis and resistance to therapy significantly contribute to cancer-related deaths. Growing body of evidence suggest that altered expression of microRNAs (miRNAs) is one of the root cause of adverse clinical outcome. miRNAs such as let-7 are the new fine tuners of signaling cascade and cellular processes which regulates the genes in post-transcriptional manner. In this review, we described the regulation of let-7 expression and the involvement of molecular factors in this process. We discussed the mechanism by which let-7 alter the expression of genes involved in the process of tumorigenesis. Further, we listed the pathways targeted by let-7 to reduce the burden of the tumor. In addition, we described the role of let-7 in breast cancer metastasis and stemness properties. This article will provide the in-depth insight into the biology of let-7 miRNA and its role in the breast cancer progression.
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Sun H, Ding C, Zhang H, Gao J. Let‑7 miRNAs sensitize breast cancer stem cells to radiation‑induced repression through inhibition of the cyclin D1/Akt1/Wnt1 signaling pathway. Mol Med Rep 2016; 14:3285-92. [PMID: 27574028 DOI: 10.3892/mmr.2016.5656] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Accepted: 07/12/2016] [Indexed: 11/06/2022] Open
Abstract
The tumor-suppressive let-7 family of microRNAs (miRNAs) has been previously identified to induce cell apoptosis, proliferation‑inhibition and suppression of the self‑renewal capacities of cancer stem cells (CSCs). However, let‑7‑mediated sensitization of tumors to radiation treatment remains to be investigated fully in triple negative breast cancer (TNBC), of which the clinical treatment is challenging. The inhibitory effect of let‑7 miRNAs on the self‑renewal ability of CSCs from TNBC was investigated. It was identified that radiation inhibited the self‑renewal ability of TNBC stem cells by inhibiting cyclin D1 and protein kinase B (Akt1) phosphorylation. Let‑7d stimulates radiation‑induced tumor repression, exerting synergistic effects with radiotherapy on stem cell renewal. Through western blotting, immunofluorescence and a luciferase assay, it was identified that reduced cyclin D1/Akt1/wingless type MMTV integration site family member 1 (Wnt1) signaling activity accounts for the let‑7‑induced radiation sensitization. Let‑7 directly inhibits cyclin D1 expression, resulting in low phosphorylation of Akt1, which is critical for the let‑7‑induced inhibition of mammosphere numbers. The let‑7d‑induced Akt1 inhibition contributed to tumor repression, with similar results to those obtained with Akt inhibitors. Furthermore, it was identified that the inhibition of Wnt1 is critical for the functioning of let‑7d, and that addition of recombinant Wnt1 abolished the effects of let‑7d on sensitization to radiotherapy. Let‑7d is suggested to be a promising therapeutic agent in the treatment of TNBC by targeting CSCs and sensitizing tumors to radiotherapy via inhibition of cyclin D1/Akt1/Wnt1 signaling.
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Affiliation(s)
- Huifang Sun
- Department of Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Changmao Ding
- Department of Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Huiyu Zhang
- Department of Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Jianbo Gao
- Department of Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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Sun X, Jiang S, Liu J, Wang H, Zhang Y, Tang SC, Wang J, Du N, Xu C, Wang C, Qin S, Zhang J, Liu D, Zhang Y, Li X, Wang J, Dong J, Wang X, Xu S, Tao Z, Xu F, Zhou J, Wang T, Ren H. MiR-208a stimulates the cocktail of SOX2 and β-catenin to inhibit the let-7 induction of self-renewal repression of breast cancer stem cells and formed miR208a/let-7 feedback loop via LIN28 and DICER1. Oncotarget 2016; 6:32944-54. [PMID: 26460550 PMCID: PMC4741741 DOI: 10.18632/oncotarget.5079] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 07/28/2015] [Indexed: 12/23/2022] Open
Abstract
MiR-208a stimulates cardiomyocyte hypertrophy, fibrosis and β-MHC (β-myosin heavy chain) expression, being involved in cardiovascular diseases. Although miR-208a is known to play a role in cardiovascular diseases, its role in cancer and cancer stem cells (CSCs) remains uncertain. We identified an inverse relationship between miR-208a and let-7a in breast cancer specimens, and found that SOX2, β-catenin and LIN28 are highly expressed in patients with advanced breast cancer opposed to lesser grades. Further, we isolated ALDH1+ CSCs from ZR75–1 and MDA-MB-231 (MM-231) breast cancer cell lines to test the role of miR-208a in breast CSCs (BrCSCs). Our studies showed that overexpression of miR-208a in these cells strongly promoted the proportion of ALDH1+ BrCSCs and continuously stimulated the self-renewal ability of BrCSCs. By using siRNAs of SOX2 and/or β-catenin, we found that miR-208a increased LIN28 through stimulation of both SOX2 and β-catenin. The knockdown of either SOX2 or β-catenin only partially attenuated the functions of miR-208a. Let-7a expression was strongly inhibited in miR-208a overexpressed cancer cells, which was achieved by miR-208a induction of LIN28, and the restoration of let-7a significantly inhibited the miR-208a induction of the number of ALDH1+ cells, inhibiting the propagations of BrCSCs. In let-7a overexpressed ZR75–1 and MM-231 cells, DICER1 activity was significantly inhibited with decreased miR-208a. Let-7a failed to decrease miR-208a expression in ZR75–1 and MM-231 cells with DICER1 knockdown. Our research revealed the mechanisms through which miR-208a functioned in breast cancer and BrCSCs, and identified the miR-208a-SOX2/β-catenin-LIN28-let-7a-DICER1 regulatory feedback loop in regulations of stem cells renewal.
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Affiliation(s)
- Xin Sun
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
| | - Shiwen Jiang
- Department of Obstetrics and Gynecology, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, 325027, China
| | - Jian Liu
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
| | - Huangzhen Wang
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
| | - Yiwen Zhang
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
| | - Shou-Ching Tang
- Breast Cancer Program and Interdisciplinary Translational Research Team, Georgia Regents University Cancer Center, Augusta, Georgia, 30912, United States.,Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
| | - Jichang Wang
- Neurosurgery Department of the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
| | - Ning Du
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
| | - Chongwen Xu
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
| | - Chenguang Wang
- Institute of Radiation Medicine, the Chinese Academy of Medical Sciences, Nankai District, Tianjing 300192, China
| | - Sida Qin
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
| | - Jia Zhang
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
| | - Dapeng Liu
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
| | - Yunfeng Zhang
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
| | - Xiaojun Li
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
| | - Jiansheng Wang
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
| | - Jun Dong
- Department of Orthopaedics, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
| | - Xin Wang
- Department of Gastroenterology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
| | - Shaohua Xu
- Department of Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, 201204, China
| | - Zhen Tao
- Department of Radiation Oncology, Tianjin Cancer Institute and Hospital Affiliated to Tianjin Medical University, Tianjin, 300060, China
| | - Fei Xu
- Department of Radiation Oncology, Shanghai Cancer Center, Fudan University, Shanghai, 200032, China
| | - Jie Zhou
- Department of Breast Oncology, Affiliated Cancer Hospital of Guangzhou Medical University, Guangzhou, Guangdong Province, 510182, China
| | - Tao Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, 430030, China
| | - Hong Ren
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, China
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28
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Pencik J, Pham HTT, Schmoellerl J, Javaheri T, Schlederer M, Culig Z, Merkel O, Moriggl R, Grebien F, Kenner L. JAK-STAT signaling in cancer: From cytokines to non-coding genome. Cytokine 2016; 87:26-36. [PMID: 27349799 DOI: 10.1016/j.cyto.2016.06.017] [Citation(s) in RCA: 155] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Accepted: 06/15/2016] [Indexed: 12/13/2022]
Abstract
In the past decades, studies of the Janus kinases (JAKs) and signal transducers and activators of transcription (STATs) signaling have uncovered highly conserved programs linking cytokine signaling to the regulation of essential cellular mechanisms such as proliferation, invasion, survival, inflammation and immunity. Inhibitors of the JAK/STAT pathway are used for treatment of autoimmune diseases, such as rheumatoid arthritis or psoriasis. Aberrant JAK/STAT signaling has been identified to contribute to cancer progression and metastatic development. Targeting of JAK/STAT pathway is currently one of the most promising therapeutic strategies in prostate cancer (PCa), hematopoietic malignancies and sarcomas. Notably, newly identified regulators of JAK/STAT signaling, the non-coding RNAs transcripts and their role as important targets and potential clinical biomarkers are highlighted in this review. In addition to the established role of the JAK/STAT signaling pathway in traditional cytokine signaling the non-coding RNAs add yet another layer of hidden regulation and function. Understanding the crosstalk of non-coding RNA with JAK/STAT signaling in cancer is of critical importance and may result in better patient stratification not only in terms of prognosis but also in the context of therapy.
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Affiliation(s)
- Jan Pencik
- Clinical Institute of Pathology, Medical University of Vienna, 1090 Vienna, Austria; Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy, 1090 Vienna, Austria; Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria.
| | - Ha Thi Thanh Pham
- Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Medical University of Vienna, 1210 Vienna, Austria
| | - Johannes Schmoellerl
- Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria
| | - Tahereh Javaheri
- Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Medical University of Vienna, 1210 Vienna, Austria
| | - Michaela Schlederer
- Clinical Institute of Pathology, Medical University of Vienna, 1090 Vienna, Austria; Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; Department for Pathology of Laboratory Animals, University of Veterinary Medicine Vienna, 1210 Vienna, Austria
| | - Zoran Culig
- Department of Urology, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Olaf Merkel
- Clinical Institute of Pathology, Medical University of Vienna, 1090 Vienna, Austria
| | - Richard Moriggl
- Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Medical University of Vienna, 1210 Vienna, Austria
| | - Florian Grebien
- Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria
| | - Lukas Kenner
- Clinical Institute of Pathology, Medical University of Vienna, 1090 Vienna, Austria; Ludwig Boltzmann Institute for Cancer Research, Medical University of Vienna, 1090 Vienna, Austria; Department for Pathology of Laboratory Animals, University of Veterinary Medicine Vienna, 1210 Vienna, Austria.
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29
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Sun X, Liu J, Xu C, Tang SC, Ren H. The insights of Let-7 miRNAs in oncogenesis and stem cell potency. J Cell Mol Med 2016; 20:1779-88. [PMID: 27097729 PMCID: PMC4988292 DOI: 10.1111/jcmm.12861] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Accepted: 03/02/2016] [Indexed: 12/18/2022] Open
Abstract
The ability of the classic tumour‐suppressive let‐7 family to inhibit carcinogenesis, tumour progression, recurrence and pluripotency of cancer stem cells has generated significant interest in the field of cancer research. Through suppressing and degrading downstream‐targeted mRNAs, let‐7 affected most aspects of cell biology. It is perplexing how let‐7 affects oncogenesis, as the large influx of new miRNAs and other kinds of non‐coding RNAs are continuously defined. In this review, we delineate the complex functions of let‐7 and discuss the future direction of let‐7 research.
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Affiliation(s)
- Xin Sun
- Department of Thoracic Surgery and Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Jian Liu
- Department of Thoracic Surgery and Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Chongwen Xu
- Department of Otorhinolaryngology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - Shou-Ching Tang
- Georgia Regents University Cancer Center, Augusta, GA, USA.,Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Hong Ren
- Department of Thoracic Surgery and Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
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30
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Let-7c blocks estrogen-activated Wnt signaling in induction of self-renewal of breast cancer stem cells. Cancer Gene Ther 2016; 23:83-9. [PMID: 26987290 DOI: 10.1038/cgt.2016.3] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 02/01/2016] [Accepted: 02/02/2016] [Indexed: 01/09/2023]
Abstract
Let-7 miRNAs are involved in carcinogenesis and tumor progression through their roles in maintaining differentiation and normal development. However, there is little research focusing on the effects of let-7 on Wnt-activated self-renewal of breast cancer stem cells. By analyzing the expression levels of let-7 family members in clinical tissues, we found that higher expression levels of let-7b and let-7c were correlated with better clinical prognosis of patients with estrogen receptor (ER)α-positive breast tumor. Further, we found that only let-7c was inversely correlated with ERα expression, and there is corelationship between let-7c and Wnt signaling in clinical tissues. Aldehyde dehydrogenase (ALDH)1 sorting and mammosphere formation assays showed that let-7c inhibited the self-renewal of stem cells in ERα-positive breast cancer. Let-7c decreased ERα expression through directly binding to the 3'UTR (untranslated region), and let-7c inhibited the estrogen-induced activation of Wnt signaling. Depletion of ERα abolished let-7c functions in stem cell signatures, which further confirmed that let-7c inhibited estrogen-induced Wnt activity through decreasing ERα expression. Taken together, our findings identified a biochemical and functional link between let-7c with ERα/Wnt signaling in breast cancer stem cells.
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31
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Lai Y, Yu X, Lin X, He S. Inhibition of mTOR sensitizes breast cancer stem cells to radiation-induced repression of self-renewal through the regulation of MnSOD and Akt. Int J Mol Med 2015; 37:369-77. [PMID: 26707081 PMCID: PMC4716789 DOI: 10.3892/ijmm.2015.2441] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 12/09/2015] [Indexed: 12/13/2022] Open
Abstract
The sensitization of breast cancer stem cells (BrCSCs) to the inhibitive effects of radiotherapy through adjuvant therapy which targets oncogenic pathways represents a prospective strategy for improving the effect of radiation in patients with triple-negative breast cancer (TNBC). Mammalian target of rapamycin (mTOR) activation is one of the most frequent events in human malignancies, and is critical for sustaining the self-renewing ability of cancer stem cells (CSCs); inhibition by rapamycin is an effective and promising strategy in anticancer treatments. In the present study, we found that mTOR activity was closely related to the self-renewal ability of BrCSCs, and in triple negative MDA-MB-453 and MDA-MB-468 cells, rapamycin repression of mTOR phosphorylation decreased the number of mammospheres and helped to sensitize the resistant CSCs to low-dose radiation therapy. By inhibiting mTOR and mitochondrial manganese superoxide dismutase (MnSOD), we confirmed that rapamycin functioned through the mTOR/MnSOD/reactive oxygen species (ROS) signaling pathway, and the existence of Akt governed the rapamycin-induced asymmetric division (AD) of stem cells in cases of radiation-treated breast cancer. The synergic effects of rapamycin and low-dose radiation induced the AD of stem cells, which then resulted in a decrease in the number of mammospheres, and both were mediated by MnSOD. Governed by Akt, the consequent inhibition of ROS formation and oxidative stress preserved the AD mode of stem cells, which is critical for an improved radiotherapy response in clinical treatment, as the tumor group is thus easier to eliminate with radiation therapy. We posit that an in-depth understanding of the interaction of radiation with CSCs has enormous potential and will make radiation even better and more effective.
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Affiliation(s)
- Yuanhui Lai
- Department of Thyroid and Breast Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510700, P.R. China
| | - Xinpei Yu
- Department of Geriatric Infection and Organ Function Support Laboratory, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China
| | - Xiaohong Lin
- Department of Thyroid and Breast Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510700, P.R. China
| | - Shanyang He
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510700, P.R. China
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