1
|
Wang B, Liu Y, Liao Z, Wu H, Zhang B, Zhang L. EZH2 in hepatocellular carcinoma: progression, immunity, and potential targeting therapies. Exp Hematol Oncol 2023; 12:52. [PMID: 37268997 DOI: 10.1186/s40164-023-00405-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 04/15/2023] [Indexed: 06/04/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the leading cause of cancer-related death. The accumulation of genetic and epigenetic changes is closely related to the occurrence and development of HCC. Enhancer of zeste homolog 2 (EZH2, a histone methyltransferase) is suggested to be one of the principal factors that mediates oncogenesis by acting as a driver of epigenetic alternation. Recent studies show that EZH2 is widely involved in proliferation and metastasis of HCC cells. In this review, the functions of EZH2 in HCC progression, the role of EZH2 in tumor immunity and the application of EZH2-related inhibitors in HCC therapy are summarized.
Collapse
Affiliation(s)
- Bohan Wang
- Hepatic Surgery Center, Institute of Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yachong Liu
- Hepatic Surgery Center, Institute of Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Zhibin Liao
- Hepatic Surgery Center, Institute of Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Haofeng Wu
- Hepatic Surgery Center, Institute of Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Bixiang Zhang
- Hepatic Surgery Center, Institute of Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Lei Zhang
- Hepatic Surgery Center, Institute of Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
- Department of Hepatobiliary Surgery, Shanxi Tongji Hospital, Tongji Medical College, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Shanxi Medical University, Huazhong University of Science and Technology, Taiyuan, 030032, China.
- Key Laboratory of Hepatobiliary and Pancreatic Diseases of Shanxi Province (Preparatory), Shanxi Tongji Hospital, Tongji Medical College, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Shanxi Medical University, Huazhong University of Science and Technology, Taiyuan, 030032, China.
| |
Collapse
|
2
|
Mieczkowska IK, Pantelaiou-Prokaki G, Prokakis E, Schmidt GE, Müller-Kirschbaum LC, Werner M, Sen M, Velychko T, Jannasch K, Dullin C, Napp J, Pantel K, Wikman H, Wiese M, Kramm CM, Alves F, Wegwitz F. Decreased PRC2 activity supports the survival of basal-like breast cancer cells to cytotoxic treatments. Cell Death Dis 2021; 12:1118. [PMID: 34845197 PMCID: PMC8630036 DOI: 10.1038/s41419-021-04407-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 11/01/2021] [Accepted: 11/09/2021] [Indexed: 12/12/2022]
Abstract
Breast cancer (BC) is the most common cancer occurring in women but also rarely develops in men. Recent advances in early diagnosis and development of targeted therapies have greatly improved the survival rate of BC patients. However, the basal-like BC subtype (BLBC), largely overlapping with the triple-negative BC subtype (TNBC), lacks such drug targets and conventional cytotoxic chemotherapies often remain the only treatment option. Thus, the development of resistance to cytotoxic therapies has fatal consequences. To assess the involvement of epigenetic mechanisms and their therapeutic potential increasing cytotoxic drug efficiency, we combined high-throughput RNA- and ChIP-sequencing analyses in BLBC cells. Tumor cells surviving chemotherapy upregulated transcriptional programs of epithelial-to-mesenchymal transition (EMT) and stemness. To our surprise, the same cells showed a pronounced reduction of polycomb repressive complex 2 (PRC2) activity via downregulation of its subunits Ezh2, Suz12, Rbbp7 and Mtf2. Mechanistically, loss of PRC2 activity leads to the de-repression of a set of genes through an epigenetic switch from repressive H3K27me3 to activating H3K27ac mark at regulatory regions. We identified Nfatc1 as an upregulated gene upon loss of PRC2 activity and directly implicated in the transcriptional changes happening upon survival to chemotherapy. Blocking NFATc1 activation reduced epithelial-to-mesenchymal transition, aggressiveness, and therapy resistance of BLBC cells. Our data demonstrate a previously unknown function of PRC2 maintaining low Nfatc1 expression levels and thereby repressing aggressiveness and therapy resistance in BLBC.
Collapse
Affiliation(s)
- Iga K. Mieczkowska
- grid.411984.10000 0001 0482 5331Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany
| | - Garyfallia Pantelaiou-Prokaki
- grid.411984.10000 0001 0482 5331Department of Gynecology and Obstetrics, University Medical Center Göttingen, Göttingen, Germany ,grid.419522.90000 0001 0668 6902Translational Molecular Imaging, Max Planck Institute for Experimental Medicine, Göttingen, Germany
| | - Evangelos Prokakis
- grid.411984.10000 0001 0482 5331Department of Gynecology and Obstetrics, University Medical Center Göttingen, Göttingen, Germany
| | - Geske E. Schmidt
- grid.411984.10000 0001 0482 5331Department of Gastroenterology, GI-Oncology and Endocrinology, University Medical Center Göttingen, Göttingen, Germany
| | - Lukas C. Müller-Kirschbaum
- grid.411984.10000 0001 0482 5331Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany
| | - Marcel Werner
- grid.411984.10000 0001 0482 5331Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany
| | - Madhobi Sen
- grid.411984.10000 0001 0482 5331Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany
| | - Taras Velychko
- grid.411984.10000 0001 0482 5331Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany
| | - Katharina Jannasch
- grid.411984.10000 0001 0482 5331Clinic for Haematology and Medical Oncology, University Medical Center Göttingen, Göttingen, Germany
| | - Christian Dullin
- grid.419522.90000 0001 0668 6902Translational Molecular Imaging, Max Planck Institute for Experimental Medicine, Göttingen, Germany ,grid.411984.10000 0001 0482 5331Clinic for Haematology and Medical Oncology, University Medical Center Göttingen, Göttingen, Germany ,grid.411984.10000 0001 0482 5331Institute for Diagnostic and Interventional Radiology, University Medical Center Göttingen, Göttingen, Germany
| | - Joanna Napp
- grid.419522.90000 0001 0668 6902Translational Molecular Imaging, Max Planck Institute for Experimental Medicine, Göttingen, Germany ,grid.411984.10000 0001 0482 5331Institute for Diagnostic and Interventional Radiology, University Medical Center Göttingen, Göttingen, Germany
| | - Klaus Pantel
- grid.13648.380000 0001 2180 3484Institute of Tumor Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Harriet Wikman
- grid.13648.380000 0001 2180 3484Institute of Tumor Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Maria Wiese
- grid.411984.10000 0001 0482 5331Department of Pediatrics and Adolescent Medicine, Division of Pediatric Hematology and Oncology, University Medical Center Göttingen, Göttingen, Germany
| | - Christof M. Kramm
- grid.411984.10000 0001 0482 5331Department of Pediatrics and Adolescent Medicine, Division of Pediatric Hematology and Oncology, University Medical Center Göttingen, Göttingen, Germany
| | - Frauke Alves
- grid.419522.90000 0001 0668 6902Translational Molecular Imaging, Max Planck Institute for Experimental Medicine, Göttingen, Germany ,grid.411984.10000 0001 0482 5331Clinic for Haematology and Medical Oncology, University Medical Center Göttingen, Göttingen, Germany ,grid.411984.10000 0001 0482 5331Institute for Diagnostic and Interventional Radiology, University Medical Center Göttingen, Göttingen, Germany
| | - Florian Wegwitz
- Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany. .,Department of Gynecology and Obstetrics, University Medical Center Göttingen, Göttingen, Germany.
| |
Collapse
|
3
|
Cui Y, Li H, Zhan H, Han T, Dong Y, Tian C, Guo Y, Yan F, Dai D, Liu P. Identification of Potential Biomarkers for Liver Cancer Through Gene Mutation and Clinical Characteristics. Front Oncol 2021; 11:733478. [PMID: 34604069 PMCID: PMC8484954 DOI: 10.3389/fonc.2021.733478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/19/2021] [Indexed: 11/13/2022] Open
Abstract
Liver cancer is a common malignant tumor worldwide, which is a serious threat to the health of people. We try to investigate some mutations and clinical indicators as candidate markers for the development of liver cancer through targeted region capture technology combined with next-generation sequencing. We collected peripheral blood and liver cancer tissue samples from 32 liver patients concurrently. The SeqCap EZ Prime Choice Probe was used to perform the targeted enrichment; this probe captures 1,000 known cancer-associated genes. We calculated the tumor mutation burden (TMB) for each patient. The high-frequency mutations and these relative genes were identified. Eventually, survival analysis was performed based on the mutations and clinical indicators. In 32 liver patients, a total of 29 high-frequency mutations were investigated. They were located in 25 genes, which were enriched in 9 cellular components (CCs), 6 molecular functions (MFs), and 21 biological processes (BPs). Among them, EZH2 c.1544A>G and CCND1 c.839A>T had the highest mutation frequency (5/32). In the protein-protein interaction (PPI) network, EZH2-DNMT3A, NOTCH1-CCND1, and ABL1-CCND1 were the top three pairs. The survival analysis showed that there were significant differences in progression-free survival (PFS) and overall survival (OS) between the Karnofsky performance score (KPS) groups. The PFS and OS in the TMB high group were higher than those in the TMB low group. OS and tumor stage had a remarkable relationship. In conclusion, EZH2 c.1544A>G and CCND1 c.839A>T might be potential biomarkers of liver cancer. TMB might be used as a prognosis and survival indicator of liver cancer.
Collapse
Affiliation(s)
- Yunlong Cui
- Department of Hepatobiliary Oncology, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy of Tianjin, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Hua Li
- Department of Endoscopy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy of Tianjin, Tianjin's Clinical Research Center for Cancer, Tianjin, China
| | - Hongjie Zhan
- Department of Gastric Cancer, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy of Tianjin, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Tao Han
- College of Engineering, Peking University, Beijing, China
| | - Yixuan Dong
- Graduate School, Tianjin Academy of Traditional Chinese Medicine, Tianjin, China
| | - Caijuan Tian
- Tianjin Marvel Medical Laboratory, Tianjin Marvelbio Technology Co., Ltd., Tianjin, China
| | - Yixian Guo
- Tianjin Marvel Medical Laboratory, Tianjin Marvelbio Technology Co., Ltd., Tianjin, China
| | - Fang Yan
- Tianjin Marvel Medical Laboratory, Tianjin Marvelbio Technology Co., Ltd., Tianjin, China
| | - Dong Dai
- Department of Molecular Imaging and Nuclear Medicine, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy of Tianjin, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Pengfei Liu
- Department of Oncology, Tianjin Academy of Traditional Chinese Medicine Affiliated Hospital, Tianjin, China
| |
Collapse
|
4
|
Dou D, Ge X, Wang X, Xu X, Zhang Z, Seng J, Cao Z, Gu Y, Han M. EZH2 Contributes To Cisplatin Resistance In Breast Cancer By Epigenetically Suppressing miR-381 Expression. Onco Targets Ther 2019; 12:9627-9637. [PMID: 32009798 PMCID: PMC6859472 DOI: 10.2147/ott.s214104] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 09/23/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Emerging evidence reveals the vital role of enhancer of zeste homolog 2 (EZH2) in cancer chemoresistance. However, its function and molecular mechanisms in breast cancer chemoresistance remain largely unknown. METHODS Gene expression was evaluated using quantitative real-time PCR (qRT-PCR) and Western blot analysis. The functional roles of EZH2 and miR-381 in breast cancer were explored using cell MTT assay and flow cytometry analysis. The effect of EZH2 on miR-381 expression in transcriptional level was determined using Chromatin immunoprecipitation (ChIP) assay and Luciferase reporter assay. RESULTS In this study, we found that EZH2 was up-regulated in CDDP-resistant breast cancer tissues and cell lines. Breast cancer patients with high EZH2 expression had a poor prognosis. EZH2 silencing improved the sensitivity of MCF-7/CDDP and MDA-MB-231/CDDP cells towards CDDP. Moreover, EZH2 could epigenetically silence miR-381. miR-381 overexpression could overcome CDDP resistance in CDDP-resistant breast cancer cells. miR-381 knockdown weakened the inductive effect of EZH2 silencing on CDDP sensitivity of MCF-7/CDDP and MDA-MB-231/CDDP cells. Furthermore, EZH2 knockdown facilitated CDDP sensitivity of CDDP-resistant breast cancer cells in vivo. CONCLUSIONS Collectively, EZH2 depletion overcame CDDP resistance of breast cancer through epigenetically silencing miR-381, providing a novel therapeutic target for breast cancer chemoresistance.
Collapse
Affiliation(s)
- Dongwei Dou
- Department of Breast Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou475000, People’s Republic of China
| | - Xin Ge
- Department of Breast Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou475000, People’s Republic of China
| | - Xinxing Wang
- Department of Breast Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou475000, People’s Republic of China
| | - Xiaodong Xu
- Department of Breast Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou475000, People’s Republic of China
| | - Zhe Zhang
- Department of Breast Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou475000, People’s Republic of China
| | - Jingjing Seng
- Department of Breast Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou475000, People’s Republic of China
| | - Zhang Cao
- Department of Breast Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou475000, People’s Republic of China
| | - Yuanting Gu
- Department of Breast Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou475000, People’s Republic of China
| | - Mingli Han
- Department of Breast Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou475000, People’s Republic of China
| |
Collapse
|
5
|
Wang C, Li X, Zhang J, Ge Z, Chen H, Hu J. EZH2 contributes to 5-FU resistance in gastric cancer by epigenetically suppressing FBXO32 expression. Onco Targets Ther 2018; 11:7853-7864. [PMID: 30464532 PMCID: PMC6225849 DOI: 10.2147/ott.s180131] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Background Increasing evidence suggests the involvement of enhancer of zeste homologue 2 (EZH2) in chemoresistance of cancer treatment. Nevertheless, its function and molecular mechanisms in gastric cancer (GC) chemoresistance are still not well elucidated. Materials and methods In the present study, we investigated the functional role of EZH2 in 5-fluorouracil (5-FU) resistance of GC cells and discovered the underlying molecular mechanism. Results Results revealed that EZH2 was upregulated in 5-FU-resistant GC tissues and cell lines. High ZEH2 expression was correlated with poor prognosis of GC patients. EZH2 knockdown enhanced 5-FU sensitivity of AGS/5-FU and SGC-7901/5-FU cells. Moreover, EZH2 could epigenetically suppress FBXO32 expression. FBXO32 overexpression could mimic the functional role of downregulated EZH2 in 5-FU resistance. FBXO32 knockdown counteracted the inductive effect of EZH2 inhibition on 5-FU sensitivity of AGS/5-FU and SGC-7901/5-FU cells. Furthermore, EZH2 knockdown facilitated 5-FU sensitivity of 5-FU-resistant GC cells in vivo. Conclusion In summary, EZH2 depletion overcame 5-FU resistance in GC by epigenetically silencing FBXO32, providing a novel therapeutic target for GC chemoresistance.
Collapse
Affiliation(s)
- Chenyu Wang
- Department of Anorectal, Huaihe Hospital of Henan University, Kaifeng, 475000, People's Republic of China,
| | - Xingwang Li
- Department of Anorectal, Huaihe Hospital of Henan University, Kaifeng, 475000, People's Republic of China,
| | - Junjie Zhang
- Department of Anorectal, Huaihe Hospital of Henan University, Kaifeng, 475000, People's Republic of China,
| | - Zheng Ge
- Department of Anorectal, Huaihe Hospital of Henan University, Kaifeng, 475000, People's Republic of China,
| | - Hejin Chen
- Department of Anorectal, Huaihe Hospital of Henan University, Kaifeng, 475000, People's Republic of China,
| | - Junhong Hu
- Department of Anorectal, Huaihe Hospital of Henan University, Kaifeng, 475000, People's Republic of China,
| |
Collapse
|
6
|
Jiang B, Li Y, Qu X, Zhu H, Tan Y, Fan Q, Jiang Y, Liao M, Wu X. Long noncoding RNA cancer susceptibility candidate 9 promotes doxorubicin‑resistant breast cancer by binding to enhancer of zeste homolog 2. Int J Mol Med 2018; 42:2801-2810. [PMID: 30106089 DOI: 10.3892/ijmm.2018.3812] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 07/24/2018] [Indexed: 11/06/2022] Open
Abstract
The present study aimed to investigate the effect of the long noncoding RNA cancer susceptibility candidate 9 (CASC9) on doxorubicin (DOX)‑resistant breast cancer and to reveal the potential underlying mechanisms. The expression of CASC9 in breast cancer tissues and cell lines, in addition to drug‑resistant breast cancer cells (MCF‑7/DOX), was detected by reverse transcription‑quantitative polymerase chain reaction. Subsequently, MCF‑7/DOX cells were transfected with the silencing vector pS‑CASC9, containing enhancer of zeste homolog 2 (EZH2), multidrug resistance protein 1 (MDR1) or control small interfering (si)RNAs. The viability, apoptosis, migration and invasion of the transfected cells were assessed via an MTT assay, flow cytometry and a Transwell assay, respectively. The expression levels of apoptosis‑associated proteins (apoptosis regulator Bcl‑2, apoptosis regulator BAX, caspase‑3 and caspase‑9) were determined by western blotting. An RNA pull‑down assay was performed to identify CASC9‑binding candidates. In addition, the expression levels of the MDR1 gene and its encoded protein, P‑glycoprotein, were detected. CASC9 expression was upregulated in breast cancer tissues and cell lines, and drug‑resistant breast cancer cells. CASC9 knockdown significantly inhibited the growth and metastasis of drug‑resistant breast cancer cells, and decreased the half‑maximal inhibitory concentration DOX in MCF‑7/DOX cells. The RNA pull‑down assay revealed that CASC9 engaged EZH2; EZH2 siRNA significantly inhibited the cell growth, metastasis and chemoresistance of MCF‑7/DOX cells. Additionally, EZH2 may regulate the MDR1 gene. The present study demonstrated the oncogenic role of CASC9 in drug‑resistant breast cancer by binding to EZH2 and regulating the MDR1 gene. Modulation of CASC9 expression may be a promising target in the therapy of breast cancer and drug‑resistant breast cancer.
Collapse
Affiliation(s)
- Baohong Jiang
- Department of Pharmacy, The First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, P.R. China
| | - Yuehua Li
- Department of Medical Oncology, The First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, P.R. China
| | - Xiaofei Qu
- Department of Medical Oncology, The First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, P.R. China
| | - Hongbo Zhu
- Department of Medical Oncology, The First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, P.R. China
| | - Yeru Tan
- Department of Medical Oncology, The First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, P.R. China
| | - Qun Fan
- Department of Medical Oncology, The First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, P.R. China
| | - Yiling Jiang
- Department of Medical Oncology, The First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, P.R. China
| | - Mingchu Liao
- Department of Medical Oncology, The First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, P.R. China
| | - Xiaoping Wu
- Department of Medical Oncology, The First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, P.R. China
| |
Collapse
|
7
|
Zhou JJ, Cheng D, He XY, Meng Z, Ye HL, Chen RF. Knockdown of long non-coding RNA HOTAIR sensitizes hepatocellular carcinoma cell to cisplatin by suppressing the STAT3/ABCB1 signaling pathway. Oncol Lett 2017; 14:7986-7992. [PMID: 29250186 PMCID: PMC5727641 DOI: 10.3892/ol.2017.7237] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 08/22/2017] [Indexed: 12/29/2022] Open
Abstract
Long non-coding RNA HOX transcript antisense RNA (HOTAIR) has been demonstrated to exhibit oncogenic activity in several types of cancer, including hepatocellular carcinoma (HCC). However, the association between HOTAIR and HCC multidrug resistance remains uncertain. The present study aimed to investigate the role of HOTAIR in HCC chemoresistance; it was found that knockdown of HOTAIR expression in HCC Huh7 cells resulted in decreased cell proliferation and increased chemosensitivity to cisplatin. Furthermore, expression levels of ATP binding cassette subfamily B member 1 (ABCB1) mRNA and protein were decreased in Huh7 cells upon HOTAIR-knockdown. In addition, HOTAIR-knockdown reduced the levels of phosphorylated signal transducer and activator of transcription 3 (STAT3), and inhibition of STAT3 phosphorylation reduced HOTAIR-mediated ABCB1 expression. Together, these findings indicated that knockdown of HOTAIR in Huh7 cells decreased STAT3 activity and ABCB1 expression, and increased chemosensitivity to cisplatin. Thus HOTAIR could serve as a novel potential therapeutic target to reverse multidrug resistance in HCC.
Collapse
Affiliation(s)
- Jia-Jia Zhou
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Di Cheng
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Xiao-Yu He
- Laboratory of Biomechanics and Physiology, Guangdong Provincial Institute of Sports Science, Guangzhou, Guangdong 510663, P.R. China
| | - Zhe Meng
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Hui-Lin Ye
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| | - Ru-Fu Chen
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong 510120, P.R. China
| |
Collapse
|
8
|
Peng Y, Zhang X, Feng X, Fan X, Jin Z. The crosstalk between microRNAs and the Wnt/β-catenin signaling pathway in cancer. Oncotarget 2017; 8:14089-14106. [PMID: 27793042 PMCID: PMC5355165 DOI: 10.18632/oncotarget.12923] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 10/21/2016] [Indexed: 12/16/2022] Open
Abstract
Mounting evidence has indicated microRNA (miR) dysregulation and the Wnt/β-catenin signaling pathway jointly drive carcinogenesis, cancer metastasis, and drug-resistance. The current review will focus on the role of the crosstalk between miRs and the Wnt/β-catenin signaling pathway in cancer development. MiRs were found to activate or inhibit the canonical Wnt pathway at various steps. On the other hand, Wnt activation increases expression of miR by directly binding to its promoter and activating transcription. Moreover, there are mutual feedback loops between some miRs and the Wnt/β-catenin signaling pathway. Clinical trials of miR-based therapeutic agents are investigated for solid and hematological tumors, however, challenges concerning low bioavailability and possible side effects must be overcome before the final clinical application. This review will describe current understanding of miR crosstalk with the Wnt/β-catenin signaling cascade. Better understanding of the regulatory network will provide insight into miR-based therapeutic development.
Collapse
Affiliation(s)
- Yin Peng
- Department of Pathology, The Shenzhen University School of Medicine, Shenzhen, Guangdong, People's Republic of China.,Department of Pathology, Wuhan University School of Basic Medical Sciences, Hubei, People's Republic of China
| | - Xiaojing Zhang
- Department of Pathology, The Shenzhen University School of Medicine, Shenzhen, Guangdong, People's Republic of China.,Shenzhen Key Laboratory of Translational Medicine in Tumors, The Shenzhen University School of Medicine, Shenzhen, Guangdong, People's Republic of China
| | - Xianling Feng
- Department of Pathology, The Shenzhen University School of Medicine, Shenzhen, Guangdong, People's Republic of China
| | - Xinmim Fan
- Department of Pathology, The Shenzhen University School of Medicine, Shenzhen, Guangdong, People's Republic of China
| | - Zhe Jin
- Department of Pathology, The Shenzhen University School of Medicine, Shenzhen, Guangdong, People's Republic of China.,Shenzhen Key Laboratory of Micromolecule Innovatal Drugs, The Shenzhen University School of Medicine, Shenzhen, Guangdong, People's Republic of China.,Shenzhen Key Laboratory of Translational Medicine in Tumors, The Shenzhen University School of Medicine, Shenzhen, Guangdong, People's Republic of China
| |
Collapse
|
9
|
Wu R, Nie Q, Tapper EE, Jerde CR, Dunlap GS, Shrestha S, Elraiyah TA, Offer SM, Diasio RB. Histone H3K27 Trimethylation Modulates 5-Fluorouracil Resistance by Inhibiting PU.1 Binding to the DPYD Promoter. Cancer Res 2016; 76:6362-6373. [PMID: 27578004 PMCID: PMC5093042 DOI: 10.1158/0008-5472.can-16-1306] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Accepted: 08/10/2016] [Indexed: 12/20/2022]
Abstract
The antimetabolite 5-fluorouracil (5-FU) is one of the most widely used chemotherapy drugs. Dihydropyrimidine dehydrogenase (DPD) is a major determinant of 5-FU response and toxicity. Although DPYD variants may affect 5-FU metabolism, they do not completely explain the reported variability in DPD function or the resultant differences in treatment response. Here, we report that H3K27 trimethylation (H3K27me3) at the DPYD promoter regulated by Ezh2 and UTX suppresses DPYD expression by inhibiting transcription factor PU.1 binding, leading to increased resistance to 5-FU. Enrichment of H3K27me3 at the DPYD promoter was negatively correlated with both DPYD expression and DPD enzyme activity in peripheral blood specimens from healthy volunteers. Lastly, tumor expression data suggest that DPYD repression by Ezh2 predicts poor survival in 5-FU-treated cancers. Collectively, the findings of the present article suggest that a previously uncharacterized mechanism regulates DPD expression and may contribute to tumor resistance to 5-FU. Cancer Res; 76(21); 6362-73. ©2016 AACR.
Collapse
Affiliation(s)
- Rentian Wu
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic Cancer Center, Rochester, Minnesota
| | - Qian Nie
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic Cancer Center, Rochester, Minnesota
| | - Erin E Tapper
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic Cancer Center, Rochester, Minnesota
| | - Calvin R Jerde
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic Cancer Center, Rochester, Minnesota
| | - Garrett S Dunlap
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic Cancer Center, Rochester, Minnesota
| | - Shikshya Shrestha
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic Cancer Center, Rochester, Minnesota
| | - Tarig A Elraiyah
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic Cancer Center, Rochester, Minnesota
- Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Steven M Offer
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic Cancer Center, Rochester, Minnesota.
- Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Robert B Diasio
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic Cancer Center, Rochester, Minnesota.
- Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota
| |
Collapse
|
10
|
Gu YJ, Li HD, Zhao L, Zhao S, He WB, Rui L, Su C, Zheng HC, Su RJ. GRP78 confers the resistance to 5-FU by activating the c-Src/LSF/TS axis in hepatocellular carcinoma. Oncotarget 2016; 6:33658-74. [PMID: 26378040 PMCID: PMC4741793 DOI: 10.18632/oncotarget.5603] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 08/26/2015] [Indexed: 11/25/2022] Open
Abstract
5-FU is a common first-line chemotherapeutic drug for the treatment of hepatocellular carcinoma. However the development of acquired resistance to 5-FU confines its clinical usages. Although this phenomenon has been the subject of intense investigation, the exact mechanism of acquired resistance to 5-FU remains elusive. Here, we report that over-expression of GRP78 contributes to acquired resistance to 5-FU in HCC by up-regulating the c-Src/LSF/TS axis. Moreover, we found that the resistance to 5-FU conferred by GRP78 is mediated by its ATPase domain. The ATPase domain differentially increased the expression of LSF, TS and promoted the phosphorylation of ERK and Akt. We further identified that GRP78 interacts physically with c-Src through its ATPase domain and promotes the phosphorylation of c-Src, which in turn increases the expression of LSF in the nucleus. Together, GRP78 confers the resistance to 5-FU by up-regulating the c-Src/LSF/TS axis via its ATPase domain.
Collapse
Affiliation(s)
- Yan-jiao Gu
- Pathology Department, The First Affiliated Hospital of Liaoning Medical College, Jinzhou, China
| | - Hong-dan Li
- Central Laboratory, Liaoning Medical College, Jinzhou, China
| | - Liang Zhao
- Central Laboratory, Liaoning Medical College, Jinzhou, China
| | - Song Zhao
- Pharmacy Department, Liaoning Medical College, Jinzhou, China
| | - Wu-bin He
- Pathology Department, The First Affiliated Hospital of Liaoning Medical College, Jinzhou, China
| | - Li Rui
- Pathology Department, The First Affiliated Hospital of Liaoning Medical College, Jinzhou, China
| | - Chang Su
- Veterinary Medicine Department, Liaoning Medical College, Jinzhou, China
| | - Hua-chuan Zheng
- Cancer Research Center, Key Laboratory of Brain and Spinal Cord Injury of Liaoning Province and Laboratory Animal Center, The First Affiliated Hospital of Liaoning Medical College, Jinzhou, China
| | - Rong-jian Su
- Central Laboratory, Liaoning Medical College, Jinzhou, China
| |
Collapse
|
11
|
Zhang Y, Lin C, Liao G, Liu S, Ding J, Tang F, Wang Z, Liang X, Li B, Wei Y, Huang Q, Li X, Tang B. MicroRNA-506 suppresses tumor proliferation and metastasis in colon cancer by directly targeting the oncogene EZH2. Oncotarget 2016; 6:32586-601. [PMID: 26452129 PMCID: PMC4741714 DOI: 10.18632/oncotarget.5309] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 09/21/2015] [Indexed: 01/19/2023] Open
Abstract
Increasing evidence reveals that aberrant expression of microRNA contributes to the development and progression of colon cancer, but the roles of microRNA-506 (miR-506) in colon cancer remain elusive. Here, we demonstrated that miR-506 was down-regulated in colon cancer tissue and cells and that miR-506 expression was inversely correlated with EZH2 expression, tumor size, lymph node invasion, TNM stage and metastasis. A high level of miR-506 identified patients with a favorable prognosis. In vitro and in vivo experiments confirmed that miR-506 inhibits the proliferation and metastasis of colon cancer, and a luciferase reporter assay confirmed that EZH2 is a direct and functional target of miR-506 via the 3′UTR of EZH2. The restoration of EZH2 expression partially reversed the proliferation and invasion of miR-506-overexpressing colon cancer cells. Moreover, we confirmed that the miR-506-EZH2 axis inhibits proliferation and metastasis by activating/suppressing specific downstream tumor-associated genes and the Wnt/β-catenin signaling pathway. Taking together, our study sheds light on the role of miR-506 as a suppressor for tumor growth and metastasis and raises the intriguing possibility that miR-506 may serve as a new potential marker for monitoring and treating colon cancer.
Collapse
Affiliation(s)
- Yi Zhang
- Department of Gastrointestinal Surgery, Xiangya Hospital, Central South University, 410008, PR China.,Department of Oncological Surgery, Affiliated Hospital of Xuzhou Medical College, 221000, PR China
| | - Changwei Lin
- Department of Gastrointestinal Surgery, Third Xiangya Hospital, Central South University, 410008, PR China
| | - Guoqing Liao
- Department of Gastrointestinal Surgery, Xiangya Hospital, Central South University, 410008, PR China
| | - Sheng Liu
- Department of Gastrointestinal Surgery, Xiangya Hospital, Central South University, 410008, PR China
| | - Jie Ding
- Department of Gastrointestinal Surgery, Guizhou Provincial People's Hospital, 550000, PR China
| | - Fang Tang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
| | - Zhenran Wang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
| | - Xingsi Liang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
| | - Bo Li
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
| | - Yangchao Wei
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
| | - Qi Huang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
| | - Xuan Li
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
| | - Bo Tang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guilin Medical University, 541000, PR China
| |
Collapse
|
12
|
Cai L, Wang Z, Liu D. Interference with endogenous EZH2 reverses the chemotherapy drug resistance in cervical cancer cells partly by up-regulating Dicer expression. Tumour Biol 2015; 37:6359-69. [DOI: 10.1007/s13277-015-4416-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 11/09/2015] [Indexed: 10/22/2022] Open
|
13
|
Chang JW, Gwak SY, Shim GA, Liu L, Lim YC, Kim JM, Jung MG, Koo BS. EZH2 is associated with poor prognosis in head-and-neck squamous cell carcinoma via regulating the epithelial-to-mesenchymal transition and chemosensitivity. Oral Oncol 2015; 52:66-74. [PMID: 26604082 DOI: 10.1016/j.oraloncology.2015.11.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 10/26/2015] [Accepted: 11/04/2015] [Indexed: 01/11/2023]
Abstract
OBJECTIVES Increasing evidence suggests that epigenetic regulation is responsible for tumor initiation and progression in head and neck squamous cell carcinoma (HNSCC). Although the polycomb group protein enhancer zeste homolog 2 (EZH2) is upregulated and a key epigenetic modifier implicated in various cancers, its molecular mechanism in HNSCC remains unknown. Herein, we investigated the role of EZH2 in HNSCC progression and its clinical implication as an HNSCC risk predictor. MATERIALS AND METHOD A retrospective analysis was performed on 90 HNSCC patients who had curative surgery between 1999 and 2011. Patients with high and low EZH2 expression were compared by the various clinicopathological factors. Survival rates were estimated by the Kaplan-Meier method and log-rank test was used to determine significance. For functional in vitro analysis, migration/invasion assay and Western blotting were performed after EZH2 knockdown using siRNA. In addition, cell proliferation was measured to clarify the role of EZH2 on cisplatin chemotherapy. RESULTS In patients with HNSCC, high EZH2 expression was correlated with advanced T stage and poor survival outcome. RNAi analysis revealed that EZH2 silencing increased E-cadherin expression while decreasing that of N-cadherin and Vimentin without altering Snail/Slug signaling, which led to decreased cell migration/invasion. EZH2 is also associated with tumor aggressiveness via regulating the epithelial-to-mesenchymal transition. Furthermore, we show that high EZH2 expression decreases sensitivity to cisplatin-based chemotherapy. CONCLUSION Our results indicate that EZH2 may not be only a predictive and prognostic biomarker but also a potential personalized therapeutic target for the treatment of HNSCC.
Collapse
Affiliation(s)
- Jae Won Chang
- Department of Otolaryngology-Head and Neck Surgery, Research Institute for Medical Science, Chungnam National University College of Medicine, Daejeon, Republic of Korea
| | - Seo Young Gwak
- Department of Otolaryngology-Head and Neck Surgery, Research Institute for Medical Science, Chungnam National University College of Medicine, Daejeon, Republic of Korea
| | - Geun-Ae Shim
- Department of Otolaryngology-Head and Neck Surgery, Research Institute for Medical Science, Chungnam National University College of Medicine, Daejeon, Republic of Korea
| | - Lihua Liu
- Department of Otolaryngology-Head and Neck Surgery, Research Institute for Medical Science, Chungnam National University College of Medicine, Daejeon, Republic of Korea
| | - Young Chang Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Jin Man Kim
- Research Institute for Medical Sciences and Pathology, Chungnam National University College of Medicine, Daejeon, Republic of Korea
| | - Min Gyu Jung
- Research Institute for Medical Sciences and Pathology, Chungnam National University College of Medicine, Daejeon, Republic of Korea
| | - Bon Seok Koo
- Department of Otolaryngology-Head and Neck Surgery, Research Institute for Medical Science, Chungnam National University College of Medicine, Daejeon, Republic of Korea.
| |
Collapse
|
14
|
Abstract
Post-translational modifications of histones (so-called epigenetic modifications) play a major role in transcriptional control and normal development, and are tightly regulated. Disruption of their control is a frequent event in disease. In particular, the methylation of lysine 27 on histone H3 (H3K27), induced by the methylase EZH2, emerges as a key control of gene expression and a major regulator of cell physiology. The identification of driver mutations in EZH2 has already led to new prognostic and therapeutic advances, and new classes of potent and specific inhibitors for EZH2 show promising results in preclinical trials. This review examines the roles of histone lysine methylases and demethylases in cells and focuses on the recent knowledge and developments about EZH2.
Collapse
|
15
|
Zhou W, Wang J, Man WY, Zhang QW, Xu WG. siRNA silencing EZH2 reverses cisplatin-resistance of human non-small cell lung and gastric cancer cells. Asian Pac J Cancer Prev 2015; 16:2425-30. [PMID: 25824776 DOI: 10.7314/apjcp.2015.16.6.2425] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Clinical resistance to chemotherapeutic agents is one of the major hindrances in the treatment of human cancers. EHZ2 is involved in drug resistance and is overexpressed in drug-resistant cancer cell lines. In this study, we investigated the effects of EHZ2 on cisplatin -resistance in A549/DDP and AGS/DDP cells. EHZ2 mRNA and protein were found to be significantly overexpressed in A549/DDP and AGS/DDP cells, compared to parental cells. EHZ2 siRNA successfully silenced EHZ2 mRNA and protein expression. Proliferation was inhibited and drug resistance to cisplatin was improved. Flow cytometry showed that silencing of EHZ2 arrested A549/DDP and AGS/DDP cells in the G0/G1 phase, increasing apoptosis, rh-123 fluorescence intensity and caspase-3/8 activities. Silencing of EHZ2 also significantly reduced the mRNA and protein expression levels of cyclin D1 and MDR1,while up-regulating p15, p21, p27 and miR-218 in A549/DPP cells. Furthermore, silencing of EHZ2 also significantly increased the expression level of tumor suppressor factor miR-218. We also found down-regulating EHZ2 expression increased methylation in A549/DDP and AGS/DDP cells. This study demonstrates that drug resistance can be effectively reversed in human cisplatin-resistant lung and gastric cancer cells through delivery of siRNAs targeting EHZ2.
Collapse
Affiliation(s)
- Wen Zhou
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, China E-mail :
| | | | | | | | | |
Collapse
|
16
|
Ito D, Childress M, Mason N, Winter A, O'Brien T, Henson M, Borgatti A, Lewellen M, Krick E, Stewart J, Lahrman S, Rajwa B, Scott MC, Seelig D, Koopmeiners J, Ruetz S, Modiano J. A double blinded, placebo-controlled pilot study to examine reduction of CD34 +/CD117 +/CD133 + lymphoma progenitor cells and duration of remission induced by neoadjuvant valspodar in dogs with large B-cell lymphoma. F1000Res 2015; 4:42. [PMID: 28357033 PMCID: PMC5357040 DOI: 10.12688/f1000research.6055.3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/13/2017] [Indexed: 01/15/2023] Open
Abstract
We previously described a population of lymphoid progenitor cells (LPCs) in canine B-cell lymphoma defined by retention of the early progenitor markers CD34 and CD117 and “slow proliferation” molecular signatures that persist in the xenotransplantation setting. We examined whether valspodar, a selective inhibitor of the ATP binding cassette B1 transporter (ABCB1, a.k.a., p-glycoprotein/multidrug resistance protein-1) used in the neoadjuvant setting would sensitize LPCs to doxorubicin and extend the length of remission in dogs with therapy naïve large B-cell lymphoma. Twenty dogs were enrolled into a double-blinded, placebo controlled study where experimental and control groups received oral valspodar (7.5 mg/kg) or placebo, respectively, twice daily for five days followed by five treatments with doxorubicin 21 days apart with a reduction in the first dose to mitigate the potential side effects of ABCB1 inhibition. Lymph node and blood LPCs were quantified at diagnosis, on the fourth day of neoadjuvant period, and 1-week after the first chemotherapy dose. Valspodar therapy was well tolerated. There were no differences between groups in total LPCs in lymph nodes or peripheral blood, nor in event-free survival or overall survival. Overall, we conclude that valspodar can be administered safely in the neoadjuvant setting for canine B-cell lymphoma; however, its use to attenuate ABCB1
+ cells does not alter the composition of lymph node or blood LPCs, and it does not appear to be sufficient to prolong doxorubicin-dependent remissions in this setting.
Collapse
Affiliation(s)
- Daisuke Ito
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Michael Childress
- Department of Veterinary Clinical Sciences, Purdue University College of Veterinary Medicine, West Lafayette, IN, 47907, USA
| | - Nicola Mason
- Department of Clinical Studies, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19104, USA.,Department of Pathology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19104, USA
| | - Amber Winter
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Clinical Investigation Center, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA
| | - Timothy O'Brien
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA.,Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Stem Cell Institute, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Michael Henson
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Antonella Borgatti
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Mitzi Lewellen
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Erika Krick
- Department of Clinical Studies, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19104, USA
| | - Jane Stewart
- Department of Veterinary Clinical Sciences, Purdue University College of Veterinary Medicine, West Lafayette, IN, 47907, USA
| | - Sarah Lahrman
- Department of Veterinary Clinical Sciences, Purdue University College of Veterinary Medicine, West Lafayette, IN, 47907, USA
| | - Bartek Rajwa
- Department of Basic Medical Sciences, Purdue University College of Veterinary Medicine, West Lafayette, IN, 47907, USA
| | - Milcah C Scott
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Davis Seelig
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Joseph Koopmeiners
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA.,Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, MN, 55455, USA
| | | | - Jaime Modiano
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA.,Stem Cell Institute, University of Minnesota, Minneapolis, MN, 55455, USA.,Center for Immunology, University of Minnesota, Minneapolis, MN, 55455, USA
| |
Collapse
|
17
|
Ito D, Childress M, Mason N, Winter A, O'Brien T, Henson M, Borgatti A, Lewellen M, Krick E, Stewart J, Lahrman S, Rajwa B, Scott MC, Seelig D, Koopmeiners J, Ruetz S, Modiano J. A double blinded, placebo-controlled pilot study to examine reduction of CD34 +/CD117 +/CD133 + lymphoma progenitor cells and duration of remission induced by neoadjuvant valspodar in dogs with large B-cell lymphoma. F1000Res 2015; 4:42. [PMID: 28357033 DOI: 10.12688/f1000research.6055.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/09/2015] [Indexed: 01/30/2023] Open
Abstract
We previously described a population of lymphoid progenitor cells (LPCs) in canine B-cell lymphoma defined by retention of the early progenitor markers CD34 and CD117 and "slow proliferation" molecular signatures that persist in the xenotransplantation setting. We examined whether valspodar, a selective inhibitor of the ATP binding cassette B1 transporter (ABCB1, a.k.a., p-glycoprotein/multidrug resistance protein-1) used in the neoadjuvant setting would sensitize LPCs to doxorubicin and extend the length of remission in dogs with therapy naïve large B-cell lymphoma. Twenty dogs were enrolled into a double-blinded, placebo controlled study where experimental and control groups received oral valspodar (7.5 mg/kg) or placebo, respectively, twice daily for five days followed by five treatments with doxorubicin 21 days apart with a reduction in the first dose to mitigate the potential side effects of ABCB1 inhibition. Lymph node and blood LPCs were quantified at diagnosis, on the fourth day of neoadjuvant period, and 1-week after the first chemotherapy dose. Valspodar therapy was well tolerated. There were no differences between groups in total LPCs in lymph nodes or peripheral blood, nor in event-free survival or overall survival. Overall, we conclude that valspodar can be administered safely in the neoadjuvant setting for canine B-cell lymphoma; however, its use to attenuate ABCB1 + cells does not alter the composition of lymph node or blood LPCs, and it does not appear to be sufficient to prolong doxorubicin-dependent remissions in this setting.
Collapse
Affiliation(s)
- Daisuke Ito
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Michael Childress
- Department of Veterinary Clinical Sciences, Purdue University College of Veterinary Medicine, West Lafayette, IN, 47907, USA
| | - Nicola Mason
- Department of Clinical Studies, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19104, USA.,Department of Pathology, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19104, USA
| | - Amber Winter
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Clinical Investigation Center, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA
| | - Timothy O'Brien
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA.,Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Stem Cell Institute, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Michael Henson
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Antonella Borgatti
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Mitzi Lewellen
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Erika Krick
- Department of Clinical Studies, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, 19104, USA
| | - Jane Stewart
- Department of Veterinary Clinical Sciences, Purdue University College of Veterinary Medicine, West Lafayette, IN, 47907, USA
| | - Sarah Lahrman
- Department of Veterinary Clinical Sciences, Purdue University College of Veterinary Medicine, West Lafayette, IN, 47907, USA
| | - Bartek Rajwa
- Department of Basic Medical Sciences, Purdue University College of Veterinary Medicine, West Lafayette, IN, 47907, USA
| | - Milcah C Scott
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Davis Seelig
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Joseph Koopmeiners
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA.,Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, MN, 55455, USA
| | | | - Jaime Modiano
- Animal Cancer Care and Research Program, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, MN, 55455, USA.,Stem Cell Institute, University of Minnesota, Minneapolis, MN, 55455, USA.,Center for Immunology, University of Minnesota, Minneapolis, MN, 55455, USA
| |
Collapse
|
18
|
Li Z, Wang Y, Qiu J, Li Q, Yuan C, Zhang W, Wang D, Ye J, Jiang H, Yang J, Cheng J. The polycomb group protein EZH2 is a novel therapeutic target in tongue cancer. Oncotarget 2014; 4:2532-49. [PMID: 24345883 PMCID: PMC3926847 DOI: 10.18632/oncotarget.1503] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
EZH2, a core member of the Polycomb Repressor Complex 2 (PRC2), mediates transcriptional silencing by catalyzing the trimethylation of histone 3 lysine 27 (H3K27), which plays key roles in cancer initiation and progression. Here, we investigated the expression pattern and biological roles of EZH2 in tongue tumorigenesis by loss-of-function assays using small interference RNA and EZH2 inhibitor DZNep. Also we determined the therapeutic efficiency of DZNep against tongue cancer in vivo. We found that aberrantly overexpressed EZH2 was associated with pathological grade, cervical nodes metastasis and Ki-67 expression in tongue cancers. Elevated EZH2 correlated with shorter overall survival and showed significant and independent prognostic importance in patients with tongue cancer. Both genetic and pharmacological depletion of EZH2 inhibited cell proliferation, migration, invasion and colony formation and decreased CD44+ subpopulation probably in part through modulating p16, p21 and E-caherin. Moreover, DZNep enhanced the anticancer effects of 5-Fluorouracil. Furthermore, intratumoral EZH2 inhibition induced by DZNep intraperitoneal administration significantly attenuated tumor growth in a tongue cancer xenograft model. Taken together, our results indicate that EZH2 serves as a key driver with multiple oncogenic functions during tongue tumorigenesis and a new biomarker for tongue cancer diagnosis and prognostic prediction. These findings open up possibilities for therapeutic intervention against EZH2 in tongue cancer.
Collapse
Affiliation(s)
- Zhongwu Li
- Head Neck Cancer Center, Institute of Stomatology, Affiliated Stomatological Hospital, Nanjing Medical University, Jiangsu, China PRC
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Ling S, Tian Y, Zhang H, Jia K, Feng T, Sun D, Gao Z, Xu F, Hou Z, Li Y, Wang L. Metformin reverses multidrug resistance in human hepatocellular carcinoma Bel‑7402/5‑fluorouracil cells. Mol Med Rep 2014; 10:2891-7. [PMID: 25310259 PMCID: PMC4227430 DOI: 10.3892/mmr.2014.2614] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 07/09/2014] [Indexed: 12/30/2022] Open
Abstract
Metformin exhibits anti‑proliferative effects in tumor cells in vitro and in vivo. The present study investigated the ability of metformin to reverse multidrug resistance (MDR) in human hepatocellular carcinoma Bel‑7402/5‑fluorouracil (5‑Fu; Bel/Fu) cells. The synergistic anti‑proliferative effect of metformin combined with 5‑Fu was evaluated using a Cell Counting kit‑8 assay. The variation in apoptotic rates and cell cycle distribution were evaluated using a flow cytometric assay and variations in target gene and protein expression were monitored using reverse transcription‑polymerase chain reaction and western blot analysis. The results demonstrated that metformin had a synergistic anti‑proliferative effect with 5‑Fu in the Bel/Fu cells. The variations in the number of apoptotic cells and distribution of the cell cycle were consistent with the variability in cell viability. Metformin targeted the AMP-activated protein kinase (AMPK)/mammalian target of rapamycin (mTOR) pathway, suppressed the expression of hypoxia‑inducible factor‑1α (HIF‑1α) and transcriptionally downregulated the expression of multidrug resistance protein 1/P‑glycoprotein (P‑gp) and multidrug resistance‑associated protein 1 (MRP1). Collectively, these findings suggested that metformin may target the AMPK/mTOR/HIF‑1α/P‑gp and MRP1 pathways to reverse MDR in hepatocellular carcinoma.
Collapse
Affiliation(s)
- Sunbin Ling
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Yu Tian
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Haiquan Zhang
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Kaiqi Jia
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Tingting Feng
- Department of Intergrative Medicine, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, P.R. China
| | - Deguang Sun
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Zhenming Gao
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| | - Fei Xu
- College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Zhaoyuan Hou
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Yan Li
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Liming Wang
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116027, P.R. China
| |
Collapse
|