1
|
Xia X, Tao C, Du K, Meng P, Hu L, Cheng D, Liu X, Bu Y, Fan X, Chen Q. SKA2-mediated transcriptional downregulation of the key enzyme of CoQ 10 biosynthesis PDSS2 in lung cancer cells. J Cancer 2023; 14:379-392. [PMID: 36860919 PMCID: PMC9969585 DOI: 10.7150/jca.79058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 12/22/2022] [Indexed: 02/05/2023] Open
Abstract
Lung cancer is the leading cause of cancer-associated mortality worldwide. SKA2 is a novel cancer-associated gene that plays critical roles in both cell cycle and tumorigenesis including lung cancer. However, the molecular mechanisms underlying its implication in lung cancer remains elusive. In this study, we first analyzed the gene expression profiling after SKA2 knockdown, and identified several candidate downstream target genes of SKA2, including PDSS2, the first key enzyme in CoQ10 biosynthesis pathway. Further experiments verified that SKA2 remarkably repressed PDSS2 gene expression at both mRNA and protein levels. Luciferase reporter assay showed that SKA2 repressed PDSS2 promoter activity through its Sp1-binding sites. Co-immunoprecipitation assay demonstrated that SKA2 associated with Sp1. Functional analysis revealed that PDSS2 remarkably suppressed lung cancer cell growth and motility. Furthermore, SKA2-induced malignant features can be also significantly attenuated by PDSS2 overexpression. However, CoQ10 treatment showed no obvious effects on lung cancer cell growth and motility. Of note, PDSS2 mutants with no catalytic activity exhibited comparable inhibitory effects on the malignant features of lung cancer cells and could also abrogate SKA2-promoted malignant phenotypes in lung cancer cells, highly suggesting a non-enzymatic tumor-suppressing activity of PDSS2 in lung cancer cells. The levels of PDSS2 expression were significantly decreased in lung cancer samples, and lung cancer patients with high expression of SKA2 and low expression of PDSS2 displayed remarkable poor prognosis. Collectively, our results demonstrated that PDSS2 is a novel downstream target gene of SKA2 in lung cancer cells, and the SKA2-PDSS2 transcriptional regulatory axis functionally contributes to human lung cancer cell malignant phenotypes and prognosis.
Collapse
Affiliation(s)
- Xing Xia
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China.,Molecular Medicine and Cancer Research Center, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Chuntao Tao
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China.,Molecular Medicine and Cancer Research Center, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Kailong Du
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China.,Molecular Medicine and Cancer Research Center, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Peixin Meng
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China.,Molecular Medicine and Cancer Research Center, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Lanyue Hu
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China.,Molecular Medicine and Cancer Research Center, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Dong Cheng
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China.,Molecular Medicine and Cancer Research Center, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Xianjun Liu
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China.,Molecular Medicine and Cancer Research Center, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Youquan Bu
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China.,Molecular Medicine and Cancer Research Center, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Xiaoyan Fan
- Department of Basic Medical Sciences, Taizhou University, Taizhou, Zhejiang 318000, China.,✉ Corresponding authors: Dr. Quanmei Chen, Department of Biochemistry and Molecular Biology, Chongqing Medical University, 1# Yixueyuan Road, Yuzhong District, Chongqing 400016, P. R. China. E-mail: (Q.C.); Phone: +86-23-6848-5991; Dr. Xiaoyan Fan, Department of Basic Medical Sciences, Taizhou University, 1139# Shifu Road, Jiaojiang Distrdict, Taizhou, Zhengjiang 318000, P. R. China. E-mail: (X. F.); Phone: +86 17816477567
| | - Quanmei Chen
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China.,Molecular Medicine and Cancer Research Center, College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China.,✉ Corresponding authors: Dr. Quanmei Chen, Department of Biochemistry and Molecular Biology, Chongqing Medical University, 1# Yixueyuan Road, Yuzhong District, Chongqing 400016, P. R. China. E-mail: (Q.C.); Phone: +86-23-6848-5991; Dr. Xiaoyan Fan, Department of Basic Medical Sciences, Taizhou University, 1139# Shifu Road, Jiaojiang Distrdict, Taizhou, Zhengjiang 318000, P. R. China. E-mail: (X. F.); Phone: +86 17816477567
| |
Collapse
|
2
|
Yuan Y, Liu Z, Li B, Gong Z, Piao C, Du Y, Zhan B, Zhang Z, Dong X. Integrated analysis of transcriptomics, proteomics and metabolomics data reveals the role of SLC39A1 in renal cell carcinoma. Front Cell Dev Biol 2022; 10:977960. [PMID: 36407113 PMCID: PMC9669761 DOI: 10.3389/fcell.2022.977960] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 10/19/2022] [Indexed: 12/10/2023] Open
Abstract
Purpose: Accumulating evidence suggests that solute carrier family 39 member 1 (SLC39A1) conceivably function as a tumor suppressor, but the underlying mechanism in renal cell carcinoma (RCC) is poorly understood. Methods: OSRC-2 renal cancer cells were first transfected with SLC39A1 overexpressed vectors and empty vectors and then used in transcriptomics, proteomics, and metabolomics integrated analyses. Results: SLC39A1 significantly altered several metabolisms at transcriptional, protein and metabolic levels, including purine and pyrimidine metabolism, amino acids and derivatives metabolism, lactose metabolism, and free fatty acid metabolism. Additionally, SLC39A1 could promote ferroptosis, and triggered significant crosstalk in PI3K-AKT signal pathway, cAMP signal pathway, and peroxisome proliferators-activated receptor (PPAR) signal pathway. Conclusion: We found SLC39A1 transfection impaired tumor metabolism and perturbed tumor metabolism-related pathways, which was a likely cause of the alteration in cell proliferation, migration, and cell cycle progression in RCC cells. These multi-omics analyses results provided both a macroscopic picture of molecular perturbation by SLC39A1 and novel insights into RCC tumorigenesis and development.
Collapse
Affiliation(s)
- Yulin Yuan
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Zimeng Liu
- Department of Anesthesiology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Bohan Li
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Zheng Gong
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Chiyuan Piao
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yang Du
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Bo Zhan
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Zhe Zhang
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xiao Dong
- Department of Urology, The First Hospital of China Medical University, Shenyang, Liaoning, China
| |
Collapse
|
3
|
Peng J, Miller M, Li BX, Xiao X. Design, Synthesis and Biological Evaluation of Prodrugs of 666-15 as Inhibitors of CREB-Mediated Gene Transcription. ACS Med Chem Lett 2022; 13:388-395. [PMID: 35300089 PMCID: PMC8919383 DOI: 10.1021/acsmedchemlett.1c00499] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 02/14/2022] [Indexed: 12/28/2022] Open
Abstract
cAMP-response element binding protein (CREB) is a transcription factor involved in multiple cancers. Chemical inhibitors of CREB represent potential anticancer agents. We previously identified 666-15 as a potent CREB inhibitor. While 666-15 showed efficacious anticancer activity in vivo through intraperitoneal (IP) injection, its oral bioavailability is limited. To increase its oral bioavailability, we describe synthesis and evaluation of prodrugs based on 666-15. The amino acid esters were attempted, but they were not stable for detailed characterization. The corresponding sulfate and phosphates were prepared. The sulfate of 666-15 was too stable to release 666-15 while the phosphates were converted into 666-15 with half-lives of ∼2 h. Phosphate 3 was also a potent CREB inhibitor with anti-breast cancer activity. Furthermore, compound 3 showed much improved oral bioavailability at 38%. These studies support that 3 can be used as an oral CREB inhibitor while IP administration of 666-15 is preferred for in vivo applications.
Collapse
Affiliation(s)
- Jiangling Peng
- Department of Chemical Physiology and Biochemistry, Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, United States
| | - Mark Miller
- Department of Chemical Physiology and Biochemistry, Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, United States
| | - Bingbing X Li
- Department of Chemical Physiology and Biochemistry, Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, United States
| | - Xiangshu Xiao
- Department of Chemical Physiology and Biochemistry, Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, United States
| |
Collapse
|
4
|
Wang B, Wang M, Jia S, Li T, Yang M, Ge F. Systematic Survey of the Regulatory Networks of the Long Noncoding RNA BANCR in Cervical Cancer Cells. J Proteome Res 2022; 21:1137-1152. [DOI: 10.1021/acs.jproteome.2c00009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Bing Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Min Wang
- The Analysis and Testing Center, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Shuzhao Jia
- The Analysis and Testing Center, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Tao Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Mingkun Yang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Feng Ge
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
5
|
Wang X, Xie Z, Lou Z, Chen Y, Huang S, Ren Y, Weng G, Zhang S. Regulation of the PTEN/PI3K/AKT pathway in RCC using the active compounds of natural products in vitro. Mol Med Rep 2021; 24:766. [PMID: 34490473 PMCID: PMC8430319 DOI: 10.3892/mmr.2021.12406] [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: 05/21/2021] [Accepted: 08/03/2021] [Indexed: 12/12/2022] Open
Abstract
Since Professor Tu Youyou won the 2015 Nobel Prize in Physiology and Medicine for the discovery of artemisinin, which is used to treat malaria, increased attention has been paid to the extracts obtained from plants, in order to analyze their biological activities, particularly with regard to their antitumor activity. Therefore, the present study explored the biochemical properties of seven natural plant extracts on renal cell carcinoma (RCC). 786-O and OS-RC-2 cells were cultured and treated with different concentrations of the extracts. Then, cell viability, the IC50 value and proliferation was determined using a Cell Counting Kit-8 assay. Apoptosis and cell cycle distribution were evaluated via flow cytometry. The expression levels of proteins were assessed using western blotting, and cellular morphology was observed using a light microscope. The results showed that sophoricoside, aucubin, notoginsenoside R1 and ginsenoside Rg1 did not exhibit a cytotoxic effect on RCC cells, whereas ginsenoside Re and allicin exhibited a very slight inhibitory effect. Naringenin possessed the highest activity of the analyzed extracts. The IC50 values of naringenin on 786-O and OS-RC-2 cells were 8.91±0.33 and 7.78±2.65 µM, respectively. In addition, naringenin notably inhibited the proliferation of RCC cells by decreasing Ki67 expression, blocked cell cycle progression in the G2 phase by regulating expression of cell cycle proteins, and increased apoptosis by upregulating caspase-8 expression, downregulating Bcl-2 expression and altering the cellular morphology. Furthermore, naringenin inhibited cell proliferation and promoted apoptosis by upregulating the expression of PTEN at the protein level, downregulated the expression of PI3K and phosphorylated-(p-)AKT, but did not affect the expression of AKT, mTOR or p-mTOR. The seven plant extracts analyzed showed differing degrees of anti-RCC activity. Sophoricoside, aucubin, notoginsenoside R1 and ginsenoside Rg1 did not exhibit notable anti-RCC activity, whereas the effect of ginsenoside Re and allicin on RCC was considerably weak. However, naringenin showed potent anti-proliferative, apoptosis inducing and cell cycle arresting activity on RCC cells via regulation of the PTEN/PI3K/AKT signaling pathway.
Collapse
Affiliation(s)
- Xue Wang
- Urology and Nephrology Institute of Ningbo University, Ningbo Urology and Nephrology Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Zhenhua Xie
- Urology and Nephrology Institute of Ningbo University, Ningbo Urology and Nephrology Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Zhongguan Lou
- Urology and Nephrology Institute of Ningbo University, Ningbo Urology and Nephrology Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Yulu Chen
- Urology and Nephrology Institute of Ningbo University, Ningbo Urology and Nephrology Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Shuaishuai Huang
- Urology and Nephrology Institute of Ningbo University, Ningbo Urology and Nephrology Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Yu Ren
- Urology and Nephrology Institute of Ningbo University, Ningbo Urology and Nephrology Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Guobin Weng
- Urology and Nephrology Institute of Ningbo University, Ningbo Urology and Nephrology Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Shuwei Zhang
- Urology and Nephrology Institute of Ningbo University, Ningbo Urology and Nephrology Hospital, Ningbo, Zhejiang 315000, P.R. China
| |
Collapse
|
6
|
Meng XY, Zhang HZ, Ren YY, Wang KJ, Chen JF, Su R, Jiang JH, Wang P, Ma Q. Pinin promotes tumor progression via activating CREB through PI3K/AKT and ERK/MAPK pathway in prostate cancer. Am J Cancer Res 2021; 11:1286-1303. [PMID: 33948358 PMCID: PMC8085840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 01/28/2021] [Indexed: 06/12/2023] Open
Abstract
Pinin (PNN), a desmosome associated protein, was demonstrated to be over-expressed and act as a tumor-promoting factor in ovarian cancer, hepatocellular carcinoma and colorectal cancer. However, the precise role of PNN in prostate cancer is still unknown. In the study, we reported that PNN was upregulated in prostate cancer tissues and PNN expression was positively associated with Gleason score, tumor stage and tumor metastasis. PNN promoted cell growth and tumorigenicity in vitro and in vivo, and modulated cell growth through driving G1/S transition via CDK6, CDK2, and Cyclin D1 in prostate cancer cells. Furthermore, PNN accelerated cell invasion, migration and EMT processes of prostate cancer cells, accompanied with the up-regulation of MMP-2, MMP-9, N-cadherin, Vimentin and down-regulation of E-cadherin. Mechanism study demonstrated that the proliferation- and motility-promoting effects of PNN on prostate cancer cells dependent on the activation of CREB, which was reversed by CREB inhibition. More important, PNN activated CREB via PI3K/AKT and ERK/MAPK pathway. Collectively, these findings indicated that PNN plays important roles in prostate cancer tumorigenesis and progression and it is a potential therapeutic target for prostate cancer treatment.
Collapse
Affiliation(s)
- Xiang-Yu Meng
- Translational Research Laboratory for Urology, The Key Laboratory of Ningbo City, Ningbo First Hospital#59 Liuting Street, Ningbo 315010, China
- Ningbo Clinical Research Center for Urological Disease, Ningbo First Hospital#59 Liuting Street, Ningbo 315010, China
| | - Hui-Zhi Zhang
- Department of Pathology, Ningbo Diagnostic Pathology CenterNingbo 315010, China
| | - Yi-Yue Ren
- Department of General Surgery, Sir Run Run Shaw Hospital, School of Medicine and Innovation Center for Minimally Invasive Technique and Device, Zhejiang UniversityHangzhou 310058, China
| | - Ke-Jie Wang
- Translational Research Laboratory for Urology, The Key Laboratory of Ningbo City, Ningbo First Hospital#59 Liuting Street, Ningbo 315010, China
- Ningbo Clinical Research Center for Urological Disease, Ningbo First Hospital#59 Liuting Street, Ningbo 315010, China
| | - Jun-Feng Chen
- Translational Research Laboratory for Urology, The Key Laboratory of Ningbo City, Ningbo First Hospital#59 Liuting Street, Ningbo 315010, China
- Ningbo Clinical Research Center for Urological Disease, Ningbo First Hospital#59 Liuting Street, Ningbo 315010, China
| | - Rui Su
- Ningbo Clinical Research Center for Urological Disease, Ningbo First Hospital#59 Liuting Street, Ningbo 315010, China
- Comprehensive Urogenital Cancer Center, Ningbo First Hospital#59 Liuting Street, Ningbo 315010, China
- Department of Urology, Ningbo First Hospital#59 Liuting Street, Ningbo 315010, China
| | - Jun-Hui Jiang
- Ningbo Clinical Research Center for Urological Disease, Ningbo First Hospital#59 Liuting Street, Ningbo 315010, China
- Department of Urology, Ningbo First Hospital#59 Liuting Street, Ningbo 315010, China
| | - Ping Wang
- School of Medicine, Ningbo University#818 Fenghua Road, Ningbo 315211, China
| | - Qi Ma
- Translational Research Laboratory for Urology, The Key Laboratory of Ningbo City, Ningbo First Hospital#59 Liuting Street, Ningbo 315010, China
- Ningbo Clinical Research Center for Urological Disease, Ningbo First Hospital#59 Liuting Street, Ningbo 315010, China
- Comprehensive Urogenital Cancer Center, Ningbo First Hospital#59 Liuting Street, Ningbo 315010, China
- Department of Urology, Ningbo First Hospital#59 Liuting Street, Ningbo 315010, China
| |
Collapse
|
7
|
Steven A, Friedrich M, Jank P, Heimer N, Budczies J, Denkert C, Seliger B. What turns CREB on? And off? And why does it matter? Cell Mol Life Sci 2020; 77:4049-4067. [PMID: 32347317 PMCID: PMC7532970 DOI: 10.1007/s00018-020-03525-8] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 03/21/2020] [Accepted: 04/06/2020] [Indexed: 12/16/2022]
Abstract
Altered expression and function of the transcription factor cyclic AMP response-binding protein (CREB) has been identified to play an important role in cancer and is associated with the overall survival and therapy response of tumor patients. This review focuses on the expression and activation of CREB under physiologic conditions and in tumors of distinct origin as well as the underlying mechanisms of CREB regulation by diverse stimuli and inhibitors. In addition, the clinical relevance of CREB is summarized, including its use as a prognostic and/or predictive marker as well as a therapeutic target.
Collapse
Affiliation(s)
- André Steven
- Institute for Medical Immunology, Martin Luther University Halle-Wittenberg, Magdeburger Str. 2, 06112, Halle (Saale), Germany
| | - Michael Friedrich
- Institute for Medical Immunology, Martin Luther University Halle-Wittenberg, Magdeburger Str. 2, 06112, Halle (Saale), Germany
| | - Paul Jank
- Institute of Pathology, Philipps University Marburg, 35043, Marburg, Germany
| | - Nadine Heimer
- Institute for Medical Immunology, Martin Luther University Halle-Wittenberg, Magdeburger Str. 2, 06112, Halle (Saale), Germany
| | - Jan Budczies
- Institute of Pathology, University Clinic Heidelberg, 69120, Heidelberg, Germany
| | - Carsten Denkert
- Institute of Pathology, Philipps University Marburg, 35043, Marburg, Germany
| | - Barbara Seliger
- Institute for Medical Immunology, Martin Luther University Halle-Wittenberg, Magdeburger Str. 2, 06112, Halle (Saale), Germany.
| |
Collapse
|
8
|
Mechanistic insights into the activation of ester prodrugs of 666-15. Bioorg Med Chem Lett 2020; 30:127455. [PMID: 32730943 DOI: 10.1016/j.bmcl.2020.127455] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/22/2020] [Accepted: 07/24/2020] [Indexed: 02/06/2023]
Abstract
cAMP-response element binding protein (CREB) is an oncogenic transcription factor implicated in many different types of cancer. We previously reported the discovery of 666-15 as a potent inhibitor of CREB-mediated gene transcription. In an effort to improve the aqueous solubility of 666-15, amino ester prodrugs 1 and 4 were designed and synthesized. Detailed chemical and biological studies of 1 and 4 revealed that a small portion of the prodrugs were converted into 666-15 through intermediate 3 instead of a long-range O,N-acyl transfer reaction that was initially proposed. These results provide unique insights into the activation of these ester prodrugs.
Collapse
|
9
|
Friedrich M, Stoehr C, Jasinski-Bergner S, Hartmann A, Wach S, Wullich B, Steven A, Seliger B. Characterization of the expression and immunological impact of the transcriptional activator CREB in renal cell carcinoma. J Transl Med 2020; 18:371. [PMID: 32993793 PMCID: PMC7526213 DOI: 10.1186/s12967-020-02544-0] [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: 07/23/2020] [Accepted: 09/22/2020] [Indexed: 12/27/2022] Open
Abstract
Background The non-classical human leukocyte antigen (HLA)-G is a strong immunomodulatory molecule. Under physiological conditions, HLA-G induces immunological tolerance in immune privileged tissues, while under pathophysiological situations it contributes to immune escape mechanisms. Therefore, HLA-G could act as a potential immune checkpoint for future anti-cancer immunotherapies. Recent data suggest an aberrant expression of the cAMP response element binding protein (CREB) in clear cell renal cell carcinoma (ccRCC), which is correlated with tumor grade and stage. Furthermore, preliminary reports demonstrated a connection of CREB as a control variable of HLA-G transcription due to CREB binding sites in the HLA-G promoter region. This study investigates the interaction between CREB and HLA-G in different renal cell carcinoma (RCC) subtypes and its correlation to clinical parameters. Methods The direct interaction of CREB with the HLA-G promoter was investigated by chromatin immunoprecipitation in RCC cell systems. Furthermore, the expression of CREB and HLA-G was determined by immunohistochemistry using a tissue microarray (TMA) consisting of 453 RCC samples of distinct subtypes. Staining results were assessed for correlations to clinical parameters as well as to the composition of the immune cell infiltrate. Results There exists a distinct expression pattern of HLA-G and CREB in the three main RCC subtypes. HLA-G and CREB expression were the lowest in chromophobe RCC lesions. However, the clinical relevance of CREB and HLA-G expression differed. Unlike HLA-G, high levels of CREB expression were positively associated to the overall survival of RCC patients. A slightly, but significantly elevated number of tumor infiltrating regulatory T cells was observed in tumors of high CREB expression. Whether this small increase is of clinical relevance has to be further investigated. Conclusions An interaction of CREB with the HLA-G promoter could be validated in RCC cell lines. Thus, for the first time the expression of CREB and its interaction with the HLA-G in human RCCs has been shown, which might be of clinical relevance.
Collapse
Affiliation(s)
- Michael Friedrich
- Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, Magdeburger Str. 2, 06110, Halle (Saale), Germany
| | - Christine Stoehr
- Institute of Pathology, Friedrich Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Simon Jasinski-Bergner
- Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, Magdeburger Str. 2, 06110, Halle (Saale), Germany
| | - Arndt Hartmann
- Institute of Pathology, Friedrich Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Sven Wach
- Department of Urology and Pediatric Urology, University Hospital Erlangen, Friedrich Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Bernd Wullich
- Department of Urology and Pediatric Urology, University Hospital Erlangen, Friedrich Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - André Steven
- Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, Magdeburger Str. 2, 06110, Halle (Saale), Germany
| | - Barbara Seliger
- Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, Magdeburger Str. 2, 06110, Halle (Saale), Germany.
| |
Collapse
|
10
|
Jiang J, Xu B, Zheng Y, Guo X, Chen F. Spindle and kinetochore-associated protein 2 facilitates the proliferation and invasion of hepatocellular carcinoma via the regulation of Wnt/β-catenin signaling. Exp Cell Res 2020; 395:112181. [PMID: 32682011 DOI: 10.1016/j.yexcr.2020.112181] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 07/10/2020] [Accepted: 07/13/2020] [Indexed: 02/07/2023]
Abstract
Recent studies have shown that spindle and kinetochore-associated protein 2 (SKA2) is dysregulated in multiple tumors and acts as a key regulator of tumor progression. However, whether SKA2 plays a role in hepatocellular carcinoma (HCC) has not been fully elucidated. The purpose of this study was to explore the expression, function and underlying molecular mechanism of SKA2 in HCC. We found that SKA2 was highly expressed in HCC tissues and cell lines. Knockdown of SKA2 caused marked reductions in the proliferative, colony-forming and invasive capacities of HCC cells, while SKA2 overexpression had opposite effects. Further experiments revealed that overexpression of SKA2 enhanced expression levels of phosphorylated glycogen synthase kinase-3β (GSK-3β) and active β-catenin in HCC cells. Moreover, SKA3 overexpression enhanced transcriptional activity mediated by Wnt/β-catenin signaling. Knockdown of SKA3 downregulated the activation of Wnt/β-catenin signaling, and the effect was significantly reversed by the inhibition of GSK-3β. Notably, inhibition of Wnt/β-catenin signaling markedly abrogated SKA2-mediated promotion effect on HCC proliferation and invasion. In addition, knockdown of SKA2 impeded tumor formation and growth in HCC cells in a nude mouse in vivo model. Overall, these findings indicate that SKA2 accelerates the progression of HCC through the upregulation of Wnt/β-catenin signaling. Our study highlights a potential role of SKA2 in HCC progression and suggests it as a possible target for HCC treatment.
Collapse
Affiliation(s)
- Jiong Jiang
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, No.157 Xi Wu Road, Xi'an, Shaanxi Province, 710004, China.
| | - Bing Xu
- State Key Laboratory of Cancer Biology & Institute of Digestive Diseases, Xijing Hospital, The Air Force Military Medical University, No.15 Changle West Road, Xi'an, Shaanxi Province, 710032, China
| | - Ying Zheng
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, No.157 Xi Wu Road, Xi'an, Shaanxi Province, 710004, China
| | - Xiaoyan Guo
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, No.157 Xi Wu Road, Xi'an, Shaanxi Province, 710004, China
| | - Fenrong Chen
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, No.157 Xi Wu Road, Xi'an, Shaanxi Province, 710004, China
| |
Collapse
|
11
|
Friedrich M, Heimer N, Stoehr C, Steven A, Wach S, Taubert H, Hartmann A, Seliger B. CREB1 is affected by the microRNAs miR-22-3p, miR-26a-5p, miR-27a-3p, and miR-221-3p and correlates with adverse clinicopathological features in renal cell carcinoma. Sci Rep 2020; 10:6499. [PMID: 32300145 PMCID: PMC7162877 DOI: 10.1038/s41598-020-63403-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 03/11/2020] [Indexed: 12/21/2022] Open
Abstract
The transcription factor cAMP response element-binding protein (CREB1) has been shown to be involved in diverse biological pathways including the regulation of cell proliferation, apoptosis, cell cycle progression, and metastasis. In this context, aberrant expression of CREB1 and the functional consequences are well investigated in a number of hematopoietic and solid tumors. However, CREB1 expression and underlying control mechanisms are only poorly analyzed in renal cell carcinoma (RCC). The present study confirmed a deregulation of CREB1 protein in the clear cell type of RCC (ccRCC) and analysis of in-house ccRCC cell lines suggested a post-transcriptional control. The combination of miRNA enrichment assay, in silico analysis and molecular biological approaches revealed four novel CREB1-regulating miRNAs, namely miR-22-3p, miR-26a-5p, miR-27a-3p, and miR-221-3p. Categorizing RCC samples as CREB1 negative or positive, respectively, the expression of these miRNAs was found to be inversely correlated with CREB1 protein levels. Analyzing 453 consecutive RCC tumors by immunohistochemistry, weakly negative, but significant correlations of CREB1 with tumor stage and grade, vascular invasion (V1) and lymphovascular invasion (L1) were found. In this respect, ccRCC might differ from other solid tumors like esophageal squamous-cell carcinoma or glioma.
Collapse
Affiliation(s)
- Michael Friedrich
- Institute for Medical Immunology, Martin Luther University Halle-Wittenberg, 06112, Halle (Saale), Germany
| | - Nadine Heimer
- Institute for Medical Immunology, Martin Luther University Halle-Wittenberg, 06112, Halle (Saale), Germany
| | - Christine Stoehr
- Institute of Pathology, University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - André Steven
- Institute for Medical Immunology, Martin Luther University Halle-Wittenberg, 06112, Halle (Saale), Germany
| | - Sven Wach
- Institute of Urology, University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Helge Taubert
- Institute of Urology, University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Arndt Hartmann
- Institute of Pathology, University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Barbara Seliger
- Institute for Medical Immunology, Martin Luther University Halle-Wittenberg, 06112, Halle (Saale), Germany.
| |
Collapse
|
12
|
Xie F, Fan Q, Li BX, Xiao X. Discovery of a Synergistic Inhibitor of cAMP-Response Element Binding Protein (CREB)-Mediated Gene Transcription with 666- 15. J Med Chem 2019; 62:11423-11429. [PMID: 31765143 DOI: 10.1021/acs.jmedchem.9b01207] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
CREB is a transcription factor implicated in the pathogenesis of multiple cancers. Targeting CREB is a promising strategy to develop potential cancer therapeutics. Previously, we identified 666-15 as a potent CREB inhibitor. Herein, we designed an ester prodrug of 666-15 through a long-range O,N-acyl transfer reaction for improved aqueous solubility. Unexpectedly, we discovered a small molecule 11 (653-47) that can potentiate the CREB inhibitory activity of 666-15 although 653-47 alone does not inhibit CREB.
Collapse
|
13
|
Su H, Ren F, Jiang H, Chen Y, Fan X. Upregulation of microRNA-520a-3p inhibits the proliferation, migration and invasion via spindle and kinetochore associated 2 in gastric cancer. Oncol Lett 2019; 18:3323-3330. [PMID: 31452811 DOI: 10.3892/ol.2019.10663] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 06/05/2019] [Indexed: 12/12/2022] Open
Abstract
MicroRNAs (miR) serve important roles in the development and progression of tumors by targeting different genes. miR-520a-3p reported in lung and breast cancers as a tumor suppressor gene. However, the expression and functional significance of miR-520a-3p is not completely understood in gastric cancer (GC). In the present study, it was demonstrated that the expression levels of miR-520a-3p were significantly downregulated in GC tissues and cells using RT-qPCR. In addition, downregulated expression of miR-520a-3p was associated with the clinical stage of the tumor and invasion in patients with GC. Furthermore, overexpression of miR-520a-3p significantly inhibited cell proliferation, invasion and migration in SGC-7901 and MGC-803 GC cell lines using proliferation, wound healing and cell invasion assays. Spindle and kinetochore associated 2 (SKA2) was upregulated in GC cells using western blot analysis and a target gene of miR-520a-3p; miR-520a-3p mimics significantly reduced SKA2 expression. In addition, upregulation of SKA2 protein expression SKA2 reversed the miR-520a-3p-mediated inhibition of SGC-7901 cell proliferation, migration and invasion. In conclusion, miR-520a-3p functioned as a tumor suppressor gene by targeting SKA2 in GC cell lines, and may serve as a novel prognostic and potential therapeutic marker.
Collapse
Affiliation(s)
- Hui Su
- Department of General Surgery, Ningbo No. 2 Hospital, Zhejiang 315010, P.R. China
| | - Feng Ren
- Department of General Surgery, Ningbo No. 2 Hospital, Zhejiang 315010, P.R. China
| | - Haitao Jiang
- Department of General Surgery, Ningbo No. 2 Hospital, Zhejiang 315010, P.R. China
| | - Yunjie Chen
- Department of General Surgery, Ningbo No. 2 Hospital, Zhejiang 315010, P.R. China
| | - Xiaoxiang Fan
- Department of Interventional Therapy, Ningbo No. 2 Hospital, Zhejiang 315010, P.R. China
| |
Collapse
|
14
|
ILF2 Directly Binds and Stabilizes CREB to Stimulate Malignant Phenotypes of Liver Cancer Cells. Anal Cell Pathol (Amst) 2019; 2019:1575031. [PMID: 30881868 PMCID: PMC6387701 DOI: 10.1155/2019/1575031] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 10/12/2018] [Accepted: 10/20/2018] [Indexed: 12/14/2022] Open
Abstract
Cyclic adenosine monophosphate (cAMP) response element-binding protein (CREB) is overexpressed and has an oncogenic role in hepatocellular carcinoma (HCC). Interleukin enhancer binding factor 2 (ILF2) has become research hotspot in liver cancer recently. However, it is still unclear whether and how CREB and ILF2 interact with each other. And how this interaction exerts its role in occurrence and development of liver cancer is still unclear. Here, we found that ILF2 directly bound with CREB, and this binding was essential for the malignant phenotypes of liver cancer cells. Moreover, we found that ILF2 acted as one of the upstream proteins of CREB and promoted CREB only in the protein level, whereas ILF2 expression was not regulated by CREB. Mechanistically, ILF2 bound to the pKID domain of CREB and stimulated its phosphorylation at Ser133. Taken together, our study finds a novel interaction between CREB and ILF2 in liver cancer, and this interaction might play a role in the diagnosis and remedy of liver cancer.
Collapse
|
15
|
SKA2/FAM33A: A novel gene implicated in cell cycle, tumorigenesis, and psychiatric disorders. Genes Dis 2018; 6:25-30. [PMID: 30906829 PMCID: PMC6411626 DOI: 10.1016/j.gendis.2018.11.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 11/07/2018] [Indexed: 12/13/2022] Open
Abstract
SKA2 (spindle and KT associated 2), also referred to as FAM33A (family with sequence similarity 33, member A), is a recently identified gene involved in cell cycle regulation, and growing evidence is implicating its roles in tumorigenesis and psychiatric disorders. It has been demonstrated that SKA2, along with its coworkers SKA1 and SKA3, constitutes the SKA complex which plays a critical role in the maintenance of the metaphase plate and/or spindle checkpoint silencing during mitosis. SKA2 is over-expressed both in cancer cell lines and clinical samples including small cell lung cancer and breast cancer, whereas downregulation of SKA2 is associated with depression and suicidal ideation. The expression of SKA2 is regulated by transcription factors including NF-κΒ and CREB, miRNAs as well as DNA methylation. In this review, we provide an overview of studies that reveal SKA2 gene and protein characteristics as well as physiological function, with a special focus on its transcription regulatory mechanisms, and also provide a summary regarding the translational opportunity of the SKA2 gene as a clinical biomarker for cancers and psychiatric disorders.
Collapse
|
16
|
Ren Z, Yang T, Zhang P, Liu K, Liu W, Wang P. SKA2 mediates invasion and metastasis in human breast cancer via EMT. Mol Med Rep 2018; 19:515-523. [PMID: 30387823 DOI: 10.3892/mmr.2018.9623] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 10/02/2018] [Indexed: 11/06/2022] Open
Abstract
Spindle and kinetochore‑associated protein 2 (SKA2) is essential for regulating the progression of mitosis. In recent years, SKA2 upregulation has been detected in various human malignancies and the role of SKA2 in tumorigenesis has received increasing attention. However, the expression and functional significance of SKA2 in breast cancer are not completely understood. To study the effects of SKA2 on breast cancer, the expression levels of SKA2 in breast cancer tissues and cell lines were evaluated by western blotting, reverse transcription‑quantitative polymerase chain reaction and immunohistochemical staining. The results demonstrated that SKA2 expression was increased in breast cancer tissues and cells, and SKA2 overexpression was associated with clinical stage and lymph node metastasis. Functional investigations revealed that SKA2 knockdown in breast cancer cells significantly reduced migration and invasion, and resulted in the decreased expression levels of matrix metalloproteinase (MMP)2 and MMP9. Furthermore, the typical microtubule arrangement was altered in SKA2 small interfering RNA (siSKA2)‑transfected cells. Reduced levels of SKA2 also downregulated the expression of epithelial‑mesenchymal transition proteins, including fibronectin, N‑cadherin and vimentin, whereas there were no alterations in the protein expression levels of E‑cadherin. Conversely, upregulation of SKA2 decreased the expression levels of E‑cadherin, and increased N‑cadherin, fibronectin and vimentin levels. Notably, it was demonstrated that E‑cadherin was translocated from the cytoplasm to the nucleus in siSKA2‑transfected cells. These results demonstrated that SKA2 may be associated with breast cancer metastasis, and siSKA2 inhibited the invasion and metastasis of breast cancer via translocation of E‑cadherin from the cytoplasm to the nucleus.
Collapse
Affiliation(s)
- Zhouhui Ren
- Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, Zhejiang 315211, P.R. China
| | - Tong Yang
- Department of Oncology Surgery, Ningbo No. 2 Hospital, Ningbo, Zhejiang 315010, P.R. China
| | - Pingping Zhang
- Department of Gynaecology, Ningbo Women and Children's Hospital, Ningbo, Zhejiang 315012, P.R. China
| | - Kaitai Liu
- Department of Oncology, Ningbo Medical Center, Li Huili Hospital, Ningbo, Zhejiang 315041, P.R. China
| | - Weihong Liu
- Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, Zhejiang 315211, P.R. China
| | - Ping Wang
- Zhejiang Provincial Key Laboratory of Pathophysiology, Ningbo University School of Medicine, Ningbo, Zhejiang 315211, P.R. China
| |
Collapse
|
17
|
Fang Q, Zhu Y, Wang Q, Song M, Gao G, Zhou Z. Suppression of cyclooxygenase 2 increases chemosensitivity to sesamin through the Akt‑PI3K signaling pathway in lung cancer cells. Int J Mol Med 2018; 43:507-516. [PMID: 30365050 DOI: 10.3892/ijmm.2018.3939] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 10/01/2018] [Indexed: 01/17/2023] Open
Abstract
Safe, affordable and efficacious agents are urgently required for cancer prevention. Sesamin, a lipid‑soluble lignan from sesame (Sesamum indicum) displays anticancer activities through an unknown mechanism. In the present study, the anticancer activity of sesamin via cyclooxygenase 2 (COX2) was investigated in lung cancer. Quantitative polymerase chain reaction was performed to determine the mRNA expression levels of COX2 in cells, while western blot analysis was used to determine its protein expression levels. Cell proliferation was evaluated by Cell Counting Kit‑8 assay, while apoptosis and cell cycle analyses were conducted by flow cytometry. The results indicated that COX2 expression was upregulated in lung cancer cell lines compared with human normal lung epithelial cell line BEAS‑2B and sesamin was demonstrated to decrease the levels of COX2, inhibit the proliferation of lung cancer cells and promote their apoptosis in a concentration‑dependent manner. Furthermore, decreased COX2 expression potentiated sesamin‑induced apoptosis and G1‑phase arrest, which was correlated with the suppression of gene products associated with cell apoptosis (Bcl‑2 and Bax) and the cell cycle (cyclin E1). In addition, cotreatment with the COX2 inhibitor CAY10404 and sesamin downregulated the expression of downstream molecules of COX2 [including interleukin (IL)1β, IL6 and tumor necrosis factor α] compared with CAY10404 or sesamin alone. Furthermore, cotreatment with sesamin and CAY10404 markedly reduced the levels of phosphorylated protein kinase B (pAkt) and phosoinositide 3 kinase (PI3K) in three lung cancer cell lines. PI3K expression was observed to be under the control of COX2, possibly forming a negative feedback loop. In addition, PI3K depletion induced apoptosis and G1‑phase arrest in A549 cells. These results suggested that sesamin blocked the pAkt‑PI3K signaling pathway by downregulating the expression of COX2, therefore resulting in cell cycle arrest and increased apoptosis in vitro. In conclusion, inhibition of COX2 increased the sensitivity of lung cancer cells to sesamin by modulating pAkt‑PI3K signaling. These results may aid the development of more selective agents to overcome cancer.
Collapse
Affiliation(s)
- Qing Fang
- Department of Pulmonary Medicine, Ningbo No. 2 Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Yuyin Zhu
- Department of Pulmonary Medicine, Ningbo No. 2 Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Qilai Wang
- Department of Pulmonary Medicine, Ningbo No. 2 Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Meijun Song
- Department of Emergency Medicine, Ningbo No. 2 Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Guosheng Gao
- Department of Laboratory, Ningbo No. 2 Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Zhiming Zhou
- Department of Pulmonary Medicine, Ningbo No. 2 Hospital, Ningbo, Zhejiang 315000, P.R. China
| |
Collapse
|
18
|
Ren Z, Yang T, Ding J, Liu W, Meng X, Zhang P, Liu K, Wang P. MiR-520d-3p antitumor activity in human breast cancer via post-transcriptional regulation of spindle and kinetochore associated 2 expression. Am J Transl Res 2018; 10:1097-1108. [PMID: 29736203 PMCID: PMC5934569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 02/05/2018] [Indexed: 06/08/2023]
Abstract
MicroRNAs (miRNAs) play an important role in human tumorigenesis as oncogenes or tumor suppressors by directly binding to the 3'-untranslated region of their target mRNAs. MiR-520d-3p has been reported as a tumor suppressor gene in ovarian cancer and gastric cancer, while the function of miR-520d-3p in human breast cancers is still uninvolved. In this study, we initially identified that the expression of miR-520d-3p was significantly reduced in breast cancer specimens and cell lines. The restoration of miR-520d-3p expression not only reduced breast cancer cell viability by causing the accumulation of G2 phase and cell apoptosis, but also inhibited tumorigenicity in vivo. In addition, as a critical target of miR-520d-3p, the activity of spindle and kinetochore associated 2 (SKA2) was greatly inhibited by miR-520d-3p, and overexpression of miR-520d-3p decreased the expression of SKA2. SKA2 downregulation suppressed cell viability, whereas restoration of SKA2 expression significantly reversed the inhibitory effects of miR-520d-3p antitumor activity. Furthermore, SKA2 was frequently overexpressed in clinical specimens and cell lines, and the expression levels were statistically inversely correlated with miR-520d-3p expression. In conclusion, our data demonstrated that miR-520d-3p antitumor activity is achieved by targeting the SKA2 in human breast cancer cells, suggesting that miR-520d-3p may be a potential target molecule for the therapy.
Collapse
Affiliation(s)
- Zhouhui Ren
- Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo UniversityNingbo 315211, China
- Ningbo NO. 2 HospitalNingbo 315010, China
| | - Tong Yang
- Ningbo NO. 2 HospitalNingbo 315010, China
| | - Jie Ding
- Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo UniversityNingbo 315211, China
| | - Weihong Liu
- Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo UniversityNingbo 315211, China
| | - Xiangyu Meng
- Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo UniversityNingbo 315211, China
| | - Pingping Zhang
- Ningbo Women and Children’s HospitalNingbo 315012, China
| | - Kaitai Liu
- Ningbo Medical Treatment Center, Lihuili HospitalNingbo 315041, China
| | - Ping Wang
- Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo UniversityNingbo 315211, China
| |
Collapse
|
19
|
Wang X, Cui H, Lou Z, Huang S, Ren Y, Wang P, Weng G. Cyclic AMP responsive element-binding protein induces metastatic renal cell carcinoma by mediating the expression of matrix metallopeptidase-2/9 and proteins associated with epithelial-mesenchymal transition. Mol Med Rep 2017; 15:4191-4198. [PMID: 28487942 DOI: 10.3892/mmr.2017.6519] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 01/10/2017] [Indexed: 11/06/2022] Open
Abstract
Renal cell carcinoma (RCC) is the most frequently occurring malignancy of the kidney worldwide. Anti-angiogenic targeted therapies inhibit the progression of RCC, however, limited effects on the invasion or metastasis of tumor cells have been observed. Cyclic AMP responsive element‑binding protein (CREB) is a serine/threonine kinase that has been implicated in the regulation of cell proliferation, apoptosis, cycle progression and metastasis, amongst others. Our previous research demonstrated that phosphorylated CREB (pCREB) was upregulated in human renal cancer cell lines and tissues, and decreased pCREB at the Ser133 site inhibited the growth and metastatic activity of OS‑RC‑2 cells. However, the role of CREB in RCC metastasis requires further investigation. Thus, the present study further investigated the role of CREB in RCC metastasis. The present study demonstrated that knockdown of CREB using small interfering RNA (siRNA) that targeted CREB (siCREB) significantly inhibited the migration and invasion of 786‑O and OS‑RC‑2 cells, however, the opposite effect was observed in ACHN cells. In addition, knockdown of CREB suppressed the expression of matrix metallopeptidase (MMP)‑2/9 and proteins associated with epithelial‑mesenchymal transition (EMT) in 786‑O and OS‑RC‑2 cells, and promoted expression in ACHN cells. Furthermore, the chromatin immunoprecipitation assay indicated that pCREB (Ser133) had a direct interaction with the fibronectin promoter, however, pCREB (Ser133) did not target the vimentin promoter in RCC. Therefore, the results of the present study indicate that CREB regulated metastatic RCC by mediating the expression of MMP‑2/9 and EMT‑associated proteins, however, CREB‑mediated MMP‑2/9 and EMT‑associated protein expression may be induced by different pathways in different RCC cells.
Collapse
Affiliation(s)
- Xue Wang
- Department of Urologic Surgery, Ningbo Urology and Nephrology Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Hui Cui
- Department of Urologic Surgery, Ningbo Urology and Nephrology Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Zhongguan Lou
- Department of Urologic Surgery, Ningbo Urology and Nephrology Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Shuaishuai Huang
- Department of Urologic Surgery, Ningbo Urology and Nephrology Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Yu Ren
- Department of Urologic Surgery, Ningbo Urology and Nephrology Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Ping Wang
- Laboratory of Kidney Carcinoma, Urology and Nephrology Institute of Ningbo University, Ningbo, Zhejiang 315000, P.R. China
| | - Guobin Weng
- Department of Urologic Surgery, Ningbo Urology and Nephrology Hospital, Ningbo, Zhejiang 315000, P.R. China
| |
Collapse
|
20
|
Li BX, Gardner R, Xue C, Qian DZ, Xie F, Thomas G, Kazmierczak SC, Habecker BA, Xiao X. Systemic Inhibition of CREB is Well-tolerated in vivo. Sci Rep 2016; 6:34513. [PMID: 27694829 PMCID: PMC5046085 DOI: 10.1038/srep34513] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 09/15/2016] [Indexed: 11/30/2022] Open
Abstract
cAMP-response element binding protein (CREB) is a nuclear transcription factor activated by multiple extracellular signals including growth factors and hormones. These extracellular cues activate CREB through phosphorylation at Ser133 by various protein serine/threonine kinases. Once phosphorylated, it promotes its association with transcription coactivators CREB-binding protein (CBP) and its paralog p300 to activate CREB-dependent gene transcription. Tumor tissues of different origins have been shown to present overexpression and/or overactivation of CREB, indicating CREB as a potential cancer drug target. We previously identified 666-15 as a potent inhibitor of CREB with efficacious anti-cancer activity both in vitro and in vivo. Herein, we investigated the specificity of 666-15 and evaluated its potential in vivo toxicity. We found that 666-15 was fairly selective in inhibiting CREB. 666-15 was also found to be readily bioavailable to achieve pharmacologically relevant concentrations for CREB inhibition. Furthermore, the mice treated with 666-15 showed no evidence of changes in body weight, complete blood count, blood chemistry profile, cardiac contractility and tissue histologies from liver, kidney and heart. For the first time, these results demonstrate that pharmacological inhibition of CREB is well-tolerated in vivo and indicate that such inhibitors should be promising cancer therapeutics.
Collapse
Affiliation(s)
- Bingbing X Li
- Program in Chemical Biology, Department of Physiology and Pharmacology, Oregon Health &Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Ryan Gardner
- Program in Chemical Biology, Department of Physiology and Pharmacology, Oregon Health &Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Changhui Xue
- Knight Cancer Institute, Oregon Health &Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - David Z Qian
- Knight Cancer Institute, Oregon Health &Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Fuchun Xie
- Program in Chemical Biology, Department of Physiology and Pharmacology, Oregon Health &Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - George Thomas
- Knight Cancer Institute, Oregon Health &Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Steven C Kazmierczak
- Department of Pathology, Oregon Health &Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Beth A Habecker
- Program in Chemical Biology, Department of Physiology and Pharmacology, Oregon Health &Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA.,Knight Cardiovascular Institute, Department of Medicine, Oregon Health &Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Xiangshu Xiao
- Program in Chemical Biology, Department of Physiology and Pharmacology, Oregon Health &Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA.,Knight Cancer Institute, Oregon Health &Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA.,Knight Cardiovascular Institute, Department of Medicine, Oregon Health &Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| |
Collapse
|