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Skryabin GO, Komelkov AV, Zhordania KI, Bagrov DV, Enikeev AD, Galetsky SA, Beliaeva AA, Kopnin PB, Moiseenko AV, Senkovenko AM, Tchevkina EM. Integrated miRNA Profiling of Extracellular Vesicles from Uterine Aspirates, Malignant Ascites and Primary-Cultured Ascites Cells for Ovarian Cancer Screening. Pharmaceutics 2024; 16:902. [PMID: 39065600 PMCID: PMC11280431 DOI: 10.3390/pharmaceutics16070902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 07/01/2024] [Accepted: 07/03/2024] [Indexed: 07/28/2024] Open
Abstract
Extracellular vesicles (EVs) are of growing interest in the context of screening for highly informative cancer markers. We have previously shown that uterine aspirate EVs (UA EVs) are a promising source of ovarian cancer (OC) diagnostic markers. In this study, we first conducted an integrative analysis of EV-miRNA profiles from UA, malignant ascitic fluid (AF), and a conditioned medium of cultured ascites cells (ACs). Using three software packages, we identified 79 differentially expressed miRNAs (DE-miRNAs) in UA EVs from OC patients and healthy individuals. To narrow down this panel and select miRNAs most involved in OC pathogenesis, we aligned these molecules with the DE-miRNA sets obtained by comparing the EV-miRNA profiles from OC-related biofluids with the same control. We found that 76% of the DE-miRNAs from the identified panel are similarly altered (differentially co-expressed) in AF EVs, as are 58% in AC EVs. Interestingly, the set of miRNAs differentially co-expressed in AF and AC EVs strongly overlaps (40 out of 44 miRNAs). Finally, the application of more rigorous criteria for DE assessment, combined with the selection of miRNAs that are differentially co-expressed in all biofluids, resulted in the identification of a panel of 29 miRNAs for ovarian cancer screening.
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Affiliation(s)
- Gleb O. Skryabin
- N.N. Blokhin National Medical Research Center of Oncology, 24 Kashirskoye Highway, Moscow 115522, Russia; (G.O.S.); (A.V.K.); (K.I.Z.); (A.D.E.); (S.A.G.); (A.A.B.); (P.B.K.)
| | - Andrei V. Komelkov
- N.N. Blokhin National Medical Research Center of Oncology, 24 Kashirskoye Highway, Moscow 115522, Russia; (G.O.S.); (A.V.K.); (K.I.Z.); (A.D.E.); (S.A.G.); (A.A.B.); (P.B.K.)
| | - Kirill I. Zhordania
- N.N. Blokhin National Medical Research Center of Oncology, 24 Kashirskoye Highway, Moscow 115522, Russia; (G.O.S.); (A.V.K.); (K.I.Z.); (A.D.E.); (S.A.G.); (A.A.B.); (P.B.K.)
| | - Dmitry V. Bagrov
- Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow 119991, Russia; (D.V.B.); (A.V.M.); (A.M.S.)
| | - Adel D. Enikeev
- N.N. Blokhin National Medical Research Center of Oncology, 24 Kashirskoye Highway, Moscow 115522, Russia; (G.O.S.); (A.V.K.); (K.I.Z.); (A.D.E.); (S.A.G.); (A.A.B.); (P.B.K.)
| | - Sergey A. Galetsky
- N.N. Blokhin National Medical Research Center of Oncology, 24 Kashirskoye Highway, Moscow 115522, Russia; (G.O.S.); (A.V.K.); (K.I.Z.); (A.D.E.); (S.A.G.); (A.A.B.); (P.B.K.)
| | - Anastasiia A. Beliaeva
- N.N. Blokhin National Medical Research Center of Oncology, 24 Kashirskoye Highway, Moscow 115522, Russia; (G.O.S.); (A.V.K.); (K.I.Z.); (A.D.E.); (S.A.G.); (A.A.B.); (P.B.K.)
- Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow 119991, Russia; (D.V.B.); (A.V.M.); (A.M.S.)
| | - Pavel B. Kopnin
- N.N. Blokhin National Medical Research Center of Oncology, 24 Kashirskoye Highway, Moscow 115522, Russia; (G.O.S.); (A.V.K.); (K.I.Z.); (A.D.E.); (S.A.G.); (A.A.B.); (P.B.K.)
| | - Andey V. Moiseenko
- Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow 119991, Russia; (D.V.B.); (A.V.M.); (A.M.S.)
| | - Alexey M. Senkovenko
- Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, Moscow 119991, Russia; (D.V.B.); (A.V.M.); (A.M.S.)
| | - Elena M. Tchevkina
- N.N. Blokhin National Medical Research Center of Oncology, 24 Kashirskoye Highway, Moscow 115522, Russia; (G.O.S.); (A.V.K.); (K.I.Z.); (A.D.E.); (S.A.G.); (A.A.B.); (P.B.K.)
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Bian Z, Benjamin MM, Bialousow L, Tian Y, Hobbs GA, Karan D, Choo YM, Hamann MT, Wang X. Targeting sine oculis homeoprotein 1 (SIX1): A review of oncogenic roles and potential natural product therapeutics. Heliyon 2024; 10:e33204. [PMID: 39022099 PMCID: PMC11252760 DOI: 10.1016/j.heliyon.2024.e33204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 06/16/2024] [Accepted: 06/17/2024] [Indexed: 07/20/2024] Open
Abstract
Sine oculis homeoprotein 1 (SIX1), a prominent representative of the homeodomain transcription factors within the SIX family, has attracted significant interest owing to its role in tumorigenesis, cancer progression, and prognostic assessments. Initially recognized for its pivotal role in embryonic development, SIX1 has emerged as a resurgent factor across a diverse set of mammalian cancers. Over the past two decades, numerous investigations have emphasized SIX1's dual significance as a developmental regulator and central player in oncogenic processes. A mounting body of evidence links SIX1 to the initiation of diverse cancers, encompassing enhanced cellular metabolism and advancement. This review provides an overview of the multifaceted roles of SIX1 in both normal development and oncogenic processes, emphasizing its importance as a possible therapeutic target and prognostic marker. Additionally, this review discusses the natural product agents that inhibit various pro-oncogenic mechanisms associated with SIX1.
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Affiliation(s)
- Zhiwei Bian
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, Gansu, China
| | - Menny M. Benjamin
- Drug Discovery and Biomedical Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - Lucas Bialousow
- Drug Discovery and Biomedical Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - Yintai Tian
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, Gansu, China
| | - G. Aaron Hobbs
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, USA
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, Charleston, SC, USA
| | - Dev Karan
- Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Yeun-Mun Choo
- Chemistry Department, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Mark T. Hamann
- Drug Discovery and Biomedical Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - Xiaojuan Wang
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, Gansu, China
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Su F, Koeberle A. Regulation and targeting of SREBP-1 in hepatocellular carcinoma. Cancer Metastasis Rev 2024; 43:673-708. [PMID: 38036934 PMCID: PMC11156753 DOI: 10.1007/s10555-023-10156-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 11/10/2023] [Indexed: 12/02/2023]
Abstract
Hepatocellular carcinoma (HCC) is an increasing burden on global public health and is associated with enhanced lipogenesis, fatty acid uptake, and lipid metabolic reprogramming. De novo lipogenesis is under the control of the transcription factor sterol regulatory element-binding protein 1 (SREBP-1) and essentially contributes to HCC progression. Here, we summarize the current knowledge on the regulation of SREBP-1 isoforms in HCC based on cellular, animal, and clinical data. Specifically, we (i) address the overarching mechanisms for regulating SREBP-1 transcription, proteolytic processing, nuclear stability, and transactivation and (ii) critically discuss their impact on HCC, taking into account (iii) insights from pharmacological approaches. Emphasis is placed on cross-talk with the phosphatidylinositol-3-kinase (PI3K)-protein kinase B (Akt)-mechanistic target of rapamycin (mTOR) axis, AMP-activated protein kinase (AMPK), protein kinase A (PKA), and other kinases that directly phosphorylate SREBP-1; transcription factors, such as liver X receptor (LXR), peroxisome proliferator-activated receptors (PPARs), proliferator-activated receptor γ co-activator 1 (PGC-1), signal transducers and activators of transcription (STATs), and Myc; epigenetic mechanisms; post-translational modifications of SREBP-1; and SREBP-1-regulatory metabolites such as oxysterols and polyunsaturated fatty acids. By carefully scrutinizing the role of SREBP-1 in HCC development, progression, metastasis, and therapy resistance, we shed light on the potential of SREBP-1-targeting strategies in HCC prevention and treatment.
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Affiliation(s)
- Fengting Su
- Michael Popp Institute and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, 6020, Innsbruck, Austria
| | - Andreas Koeberle
- Michael Popp Institute and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, 6020, Innsbruck, Austria.
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Li X, He F, Hu S, Sun N, Huo C, Liu R. The culprits of superoxide dismutase inactivation under size-dependent stress of ultrafine carbon black: Superoxide anion, genotoxicity and protein corona. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 862:160770. [PMID: 36502967 DOI: 10.1016/j.scitotenv.2022.160770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/28/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
As a critical component of atmospheric ultrafine particulates, ultrafine carbon black (UFCB) brings great exposure risk to organisms. At present, the action pathway and activity regulation mechanism of UFCB on functional proteins in vivo are not clear, and the size-dependent effects of UFCB during this process need to be elucidated. Superoxide dismutase (SOD), one of the most applied biomarkers to assess the environmental impact of pollutants, plays crucial roles in resistance to oxidative stress. Here, based on the inactivation of SOD (84.79 %, 86.81 % and 91.70 %) in primary mouse hepatocytes exposed to UFCB (13 nm, 50 nm and 95 nm), oxidative stress, genotoxicity and protein molecular studies were employed to elucidate the inactivation mechanisms. Results showed that inhibition of UFCB-mediated superoxide anion (O2-) contributed to a decrease in SOD activity. Furthermore, the significant increase in 8-hydroxy-2-deoxyguanosine content and the comet tail formation indicated the occurrence of DNA damage, supporting that concomitant aberrant transcriptional and protein translational under gene regulation should be responsible for SOD inactivation. At the molecular level, the constricted backbone, reduced content of α-helix and fluorescence sensitization all demonstrated that the attachment-type binding of SOD on UFCB to form the 'protein corona' disrupted protein structure. Enzyme activity assays indicated that SOD backbone tightening and helix decay resulted in decreased activity, which should be another reason for intracellular SOD inactivation. More importantly, the particle sizes of UFCB exert powerful influences on SOD inactivation mechanisms. Smaller UFCB (13 nm) induced more severe O2- inhibition and DNA damage, while UFCB50nm with the best dispersity bound more SOD and induced stronger molecular toxicity, which are their different strengths in stressing SOD inactivation in hepatocytes. Our findings provide novel insights for exploring functional proteins activity and underscore a potentially size-dependent risk of nanoparticles.
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Affiliation(s)
- Xiangxiang Li
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Falin He
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Shaoyang Hu
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Ning Sun
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Chenqian Huo
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China.
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Zhu S, Li W, Zhang H, Yan Y, Mei Q, Wu K. Retinal determination gene networks: from biological functions to therapeutic strategies. Biomark Res 2023; 11:18. [PMID: 36750914 PMCID: PMC9906957 DOI: 10.1186/s40364-023-00459-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 01/28/2023] [Indexed: 02/09/2023] Open
Abstract
The retinal determinant gene network (RDGN), originally discovered as a critical determinator in Drosophila eye specification, has become an important regulatory network in tumorigenesis and progression, as well as organogenesis. This network is not only associated with malignant biological behaviors of tumors, such as proliferation, and invasion, but also regulates the development of multiple mammalian organs. Three members of this conservative network have been extensively investigated, including DACH, SIX, and EYA. Dysregulated RDGN signaling is associated with the initiation and progression of tumors. In recent years, it has been found that the members of this network can be used as prognostic markers for cancer patients. Moreover, they are considered to be potential therapeutic targets for cancer. Here, we summarize the research progress of RDGN members from biological functions to signaling transduction, especially emphasizing their effects on tumors. Additionally, we discuss the roles of RDGN members in the development of organs and tissue as well as their correlations with the pathogenesis of chronic kidney disease and coronary heart disease. By summarizing the roles of RDGN members in human diseases, we hope to promote future investigations into RDGN and provide potential therapeutic strategies for patients.
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Affiliation(s)
- Shuangli Zhu
- grid.412793.a0000 0004 1799 5032Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Wanling Li
- grid.412793.a0000 0004 1799 5032Department of Geriatrics, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China ,grid.470966.aCancer Center, Shanxi Bethune Hospital, Shanxi Academy of Medical Science, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, 030032 China
| | - Hao Zhang
- grid.412793.a0000 0004 1799 5032Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Yuheng Yan
- grid.412793.a0000 0004 1799 5032Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Qi Mei
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China. .,Cancer Center, Shanxi Bethune Hospital, Shanxi Academy of Medical Science, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, 030032, China.
| | - Kongming Wu
- Cancer Center, Shanxi Bethune Hospital, Shanxi Academy of Medical Science, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, 030032, China. .,Cancer Center, Tongji hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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Vazirabad AF, Noorolyai S, Baghbani E, Mahboob S, Zargari F, Rahmani S, Sorkhabi A, Montazami N, Sameti P, Baradaran B. Silencing of SiX-4 enhances the chemosensitivity of melanoma cells to Cisplatin. Pathol Res Pract 2022; 240:154194. [PMID: 36370483 DOI: 10.1016/j.prp.2022.154194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 10/23/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022]
Abstract
Melanoma is the riskiest type of skin cancer. Its prevalence has been rapidly increased over the last three decades. SIX1, SIX2, SIX3, SIX4, SIX5, and SIX6 are members of the sine oculis homeobox (SIX) homolog family. It is imperative to identify new melanoma biomarkers to improve the predictive value for melanoma prognosis, which could enhance our understanding of carcinogenesis and tumor progression. In this study, we investigated whether silencing of SIX4 in a melanoma cell line (A375 cells) in combination with Cisplatin can affect the apoptosis and suppression of cell cycle progression, migration of the melanoma cells. MTT test and colony formation assay was applied to determine the IC50 of Cisplatin and the combined effect of SIX4 siRNA and Cisplatin on the viability and clonogenesis of the A-375 cells. qRT-PCR was performed to determine the c-myc, BCL-2, BAX, MMP-9, CXCR4, and Rock genes expression. Furthermore, flow cytometry was applied to evaluate apoptosis, autophagy, and the cell cycle status in different groups. Finally, wound healing assay was employed to evaluate the effect of this combination therapy on migratory capacity. SIX4 suppression increased the chemosensitivity of A-375 cells to Cisplatin and decreased its efficient dose. Furthermore, SIX4 suppression alongside Cisplatin reduced cell migration rate, arrested the cell cycle at the G1 phase, induced apoptosis by modulating the expression of apoptotic target genes, induced autophagy, and also significantly inhibits clonogenesis of A-375 cells. SIX4 plays a significant role in the chemosensitivity and pathogenesis of melanoma. Therefore, SIX4 suppression, in combination with Cisplatin, may be a promising therapeutic approach in treating melanoma.
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Affiliation(s)
| | - Saeed Noorolyai
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elham Baghbani
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soltanali Mahboob
- Faculty of Health and Nutrition, Tabriz University of Medical Sciences, Department of Food and Nutrition Security, Iran; Department of Biochemistry, Higher Education Institute of Rab-Rashid, Tabriz, Iran
| | - Felor Zargari
- Department of Medical Science, Marand Branch, Islamic Azad University, Marand, Iran
| | - Shima Rahmani
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amin Sorkhabi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nooshin Montazami
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Pouriya Sameti
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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Hardy S, Choo YM, Hamann M, Cray J. Manzamine-A Alters In Vitro Calvarial Osteoblast Function. Mar Drugs 2022; 20:647. [PMID: 36286470 PMCID: PMC9604769 DOI: 10.3390/md20100647] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/07/2022] [Accepted: 10/14/2022] [Indexed: 11/17/2022] Open
Abstract
Manzamine-A is a marine-derived alkaloid which has anti-viral and anti-proliferative properties and is currently being investigated for its efficacy in the treatment of certain viruses (malaria, herpes, HIV-1) and cancers (breast, cervical, colorectal). Manzamine-A has been found to exert effects via modulation of SIX1 gene expression, a gene critical to craniofacial development via the WNT, NOTCH, and PI3K/AKT pathways. To date little work has focused on Manzamine-A and how its use may affect bone. We hypothesize that Manzamine-A, through SIX1, alters bone cell activity. Here, we assessed the effects of Manzamine-A on cells that are responsible for the generation of bone, pre-osteoblasts and osteoblasts. PCR, qrtPCR, MTS cell viability, Caspase 3/7, and functional assays were used to test the effects of Manzamine-A on these cells. Our data suggests Six1 is highly expressed in osteoblasts and their progenitors. Further, osteoblast progenitors and osteoblasts exhibit great sensitivity to Manzamine-A treatment exhibited by a significant decrease in cell viability, increase in cellular apoptosis, and decrease in alkaline phosphatase activity. In silico binding experiment showed that manzamine A potential as an inhibitor of cell proliferation and survival proteins, i.e., Iκb, JAK2, AKT, PKC, FAK, and Bcl-2. Overall, our data suggests Manzamine-A may have great effects on bone health overall and may disrupt skeletal development, homeostasis, and repair.
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Affiliation(s)
- Samantha Hardy
- Department of Biomedical Education and Anatomy, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Yeun-Mun Choo
- Chemistry Department, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Mark Hamann
- Departments of Drug Discovery and Biomedical Sciences and Public Health, Colleges of Pharmacy and Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
| | - James Cray
- Department of Biomedical Education and Anatomy, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
- Division of Biosciences, The Ohio State College of Dentistry, Columbus, OH 43210, USA
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C Andrade A, Freitas TR, Dornelas GG, Gomes LC, Barbosa BL, Araújo SS, Gomes KB, Sabino AP. miR-197, miR-26a and miR-27a analysis in chronic lymphocytic leukemia. Biomark Med 2022; 16:903-914. [PMID: 35833845 DOI: 10.2217/bmm-2021-0873] [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] [Indexed: 11/21/2022] Open
Abstract
Aims: Chronic lymphocytic leukemia (CLL) involves the proliferation and increase of B-lymphocytes in the peripheral blood, bone marrow and lymphoid organs. This study evaluated the microRNAs miR-197, miR-26a and miR-27a as potential biomarkers for CLL. Patients & Methods: Eighty-two patients with CLL and 62 control subjects (CT) were investigated for these targets, using quantitative PCR (qPCR). Results: A significant reduction of all microRNAs was observed in CLL compared to the controls (p < 0.001). Significant negative correlations were observed for the clinical staging groups. After adjusting for multiple logistic regression analysis, miR-197 and miR-26a remained as possible independent risk factors related to the CLL. Conclusions: Our data indicated good performance of this microRNAs as potential biomarkers in CLL.
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Affiliation(s)
- Ana C Andrade
- Department of Clinical & Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais, 6627, Presidente Antônio Carlos Ave, Pampulha, Belo Horizonte, MG, 31270901, Brazil
| | - Tulio R Freitas
- Department of Clinical & Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais, 6627, Presidente Antônio Carlos Ave, Pampulha, Belo Horizonte, MG, 31270901, Brazil
| | - Geovana G Dornelas
- Department of Clinical & Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais, 6627, Presidente Antônio Carlos Ave, Pampulha, Belo Horizonte, MG, 31270901, Brazil
| | | | | | - Sérgio Ss Araújo
- Clinical Hospital, Federal University of Minas Gerais, Presidente Antônio Carlos Ave, Pampulha, Belo Horizonte, MG, 31270901, Brazil
| | - Karina B Gomes
- Department of Clinical & Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais, 6627, Presidente Antônio Carlos Ave, Pampulha, Belo Horizonte, MG, 31270901, Brazil
| | - Adriano P Sabino
- Department of Clinical & Toxicological Analysis, Faculty of Pharmacy, Federal University of Minas Gerais, 6627, Presidente Antônio Carlos Ave, Pampulha, Belo Horizonte, MG, 31270901, Brazil
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9
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LIN28B inhibition sensitizes cells to p53-restoring PPI therapy through unleashed translational suppression. Oncogenesis 2022; 11:37. [PMID: 35780125 PMCID: PMC9250532 DOI: 10.1038/s41389-022-00412-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 06/16/2022] [Accepted: 06/21/2022] [Indexed: 11/17/2022] Open
Abstract
p53 is the most highly mutated tumor suppressor across multiple types of human cancers. The level and function of p53 are fine-tuned through multifaced mechanisms in which the protein–protein interaction between p53 and MDM2 is considered as a major circuit. Recent studies suggest therapeutic strategy attempts to restore p53 function by small molecule inhibitors targeting p53–MDM2 interaction can be a promising direction in treating cancers with wild-type or functional p53. Currently, clinical tests of the p53–MDM2 protein–protein interaction inhibitors (PPIs) are underway. However, it remains elusive about the biomarkers that may predict the therapeutic responses to those inhibitors. Here we report that RNA-binding protein LIN28B directly regulates p53 through binding to the 5′΄ untranslated region of p53 mRNA and blocks its translation by competing with a translation enhancer protein, ribosomal protein L26 (RPL26). This regulatory mechanism of LIN28B does not involve let-7 maturation or the canonical protein turnover pathway of p53. Furthermore, we show that inhibition of LIN28B unleashes the translational suppression of p53 through RPL26, and leads to enhanced sensitivities of cancer cells to inhibitors of p53–MDM2 interaction. Together, we demonstrate a competitive regulatory mechanism of p53 by LIN28B, which has important implications in developing biomarkers to the therapies aiming to reinstate p53 function.
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Yin A, Feng M, Zhang L, Cheng Z, Li Y, Qian L. Identification of a novel native peptide derived from 60S ribosomal protein L23a that translationally regulates p53 to reduce myocardial ischemia-reperfusion. Pharmacol Res 2022; 175:105988. [PMID: 34808368 DOI: 10.1016/j.phrs.2021.105988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/22/2021] [Accepted: 11/11/2021] [Indexed: 11/22/2022]
Abstract
Myocardial ischemia-reperfusion (I/R) is a severe disease,but its underlying mechanism is not fully elucidated and no effective clinical treatment is available. Utilizing intracellular peptidomics, we identified a novel native peptide PDRL23A (Peptide Derived from RPL23A), that is intimately related to hypoxic stress. We further show that PDRL23A effectively alleviates hypoxia-induced cardiomyocyte injury in vitro, along with improvements in mitochondrial function and redox homeostasis, including ROS accumulation, oxidative phosphorylation, and mitochondrial membrane potential. Strikingly, the in vivo results indicate that, short-term pretreatment with PDRL23A could effectively inhibit I/R-induced cardiomyocyte death, myocardial fibrosis and decreased cardiac function. Interestingly, PDRL23A was found to interact with 60 S ribosomal protein L26 (RPL26), hampering RPL26-governed p53 translation, and resulting in a reduction in the level of p53 protein, which in turn reduced p53-mediated apoptosis under hypoxic conditions. Collectively, a native peptide, PDRL23A, which translationally regulates p53 to protect against myocardial I/R injury, has been identified for the first time. Our findings provide insight into the adaptive mechanisms of hypoxia and present a potential new treatment for myocardial I/R.
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Affiliation(s)
- Anwen Yin
- Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200336, China
| | - Mengwen Feng
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Li Zhang
- Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200336, China
| | - Zijie Cheng
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Yun Li
- Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200336, China.
| | - Lingmei Qian
- Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200336, China; Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.
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11
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Rafiq A, Aashaq S, Jan I, Beigh MA. SIX1 transcription factor: A review of cellular functions and regulatory dynamics. Int J Biol Macromol 2021; 193:1151-1164. [PMID: 34742853 DOI: 10.1016/j.ijbiomac.2021.10.133] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 10/17/2021] [Accepted: 10/18/2021] [Indexed: 10/19/2022]
Abstract
Sine Oculis Homeobox 1 (SIX1) is a member of homeobox transcription factor family having pivotal roles in organismal development and differentiation. This protein functionally acts to regulate the expression of different proteins that are involved in organ development during embryogenesis and in disorders like cancer. Aberrant expression of this homeoprotein has therefore been reported in multiple pathological complexities like hearing impairment and renal anomalies during development and tumorigenesis in adult life. Most of the cellular effects mediated by it are mostly due to its role as a transcription factor. This review presents a concise narrative of its structure, interaction partners and cellular functions vis a vis its role in cancer. We thoroughly discuss the reported molecular mechanisms that govern its function in cellular milieu. Its post-translational regulation by phosphorylation and ubiquitination are also discussed with an emphasis on yet to be explored mechanistic insights regulating its molecular dynamics to fully comprehend its role in development and disease.
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Affiliation(s)
- Asma Rafiq
- Department of Nanotechnology, University of Kashmir, Hazratbal Campus, Srinagar JK-190006, India
| | - Sabreena Aashaq
- Department of Immunology and Molecular Medicine, Sher-i-Kashmir Institute of Medical Sciences, Soura, Srinagar JK-190011, India
| | - Iqra Jan
- Department of Nanotechnology, University of Kashmir, Hazratbal Campus, Srinagar JK-190006, India
| | - Mushtaq A Beigh
- Department of Nanotechnology, University of Kashmir, Hazratbal Campus, Srinagar JK-190006, India.
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12
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Mengozzi A, Pugliese NR, Taddei S, Masi S, Virdis A. Microvascular Inflammation and Cardiovascular Prevention: The Role of Microcirculation as Earlier Determinant of Cardiovascular Risk. High Blood Press Cardiovasc Prev 2021; 29:41-48. [PMID: 34855153 DOI: 10.1007/s40292-021-00493-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 11/20/2021] [Indexed: 12/18/2022] Open
Abstract
Healthcare systems encumbered by cardiovascular diseases demand adequate cardiovascular prevention. Indeed, even with the most novel therapies, the residual cardiovascular risk still fuels morbidity and mortality. Addressing inflammation as a putative mediator of this risk has brought along promising in vitro results, though large clinical trials have only in part confirmed them. To fully exploit the therapeutic potential between the inflammatory hypothesis, a change of viewpoint is required. Focus on microcirculation, whose dysfunction is the primary driver of cardiometabolic disease, is mandatory. Several factors play a pivotal role in the capacity of microvascular inflammation to promote a health-to-disease transition: the adipose tissue (in particular, perivascular and epicardial), the mitochondria function, the hyperglycemic damage and their epigenetic signature. Indeed, the low-grade inflammatory response, which is now an acknowledged hallmark of cardiometabolic disease, is promoted by these mediators and leaves a permanent epigenetic scar on the microvasculature. Even if a more profound knowledge about the mechanisms of metabolic memory has been brought to light by recent evidence, we still have to fully understand its mechanisms and clinical potential. Addressing the detrimental role of inflammation by targeting the microvascular phenotype and leveraging epigenetics is the road down which we must go to achieve satisfactory cardiovascular prevention, ultimately leading to disease-free ageing.
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Affiliation(s)
- Alessandro Mengozzi
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy.,Institute of Life Sciences, Sant'Anna School of Advanced Studies, Pisa, Italy
| | | | - Stefano Taddei
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Stefano Masi
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy.,Institute of Cardiovascular Science, University College London, London, UK
| | - Agostino Virdis
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy.
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13
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Meurer L, Ferdman L, Belcher B, Camarata T. The SIX Family of Transcription Factors: Common Themes Integrating Developmental and Cancer Biology. Front Cell Dev Biol 2021; 9:707854. [PMID: 34490256 PMCID: PMC8417317 DOI: 10.3389/fcell.2021.707854] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 06/28/2021] [Indexed: 01/19/2023] Open
Abstract
The sine oculis (SIX) family of transcription factors are key regulators of developmental processes during embryogenesis. Members of this family control gene expression to promote self-renewal of progenitor cell populations and govern mechanisms of cell differentiation. When the function of SIX genes becomes disrupted, distinct congenital defects develops both in animal models and humans. In addition to the embryonic setting, members of the SIX family have been found to be critical regulators of tumorigenesis, promoting cell proliferation, epithelial-to-mesenchymal transition, and metastasis. Research in both the fields of developmental biology and cancer research have provided an extensive understanding of SIX family transcription factor functions. Here we review recent progress in elucidating the role of SIX family genes in congenital disease as well as in the promotion of cancer. Common themes arise when comparing SIX transcription factor function during embryonic and cancer development. We highlight the complementary nature of these two fields and how knowledge in one area can open new aspects of experimentation in the other.
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Affiliation(s)
- Logan Meurer
- Department of Basic Sciences, NYIT College of Osteopathic Medicine at Arkansas State University, Jonesboro, AR, United States
| | - Leonard Ferdman
- Department of Basic Sciences, NYIT College of Osteopathic Medicine at Arkansas State University, Jonesboro, AR, United States
| | - Beau Belcher
- Department of Biological Sciences, Arkansas State University, Jonesboro, AR, United States
| | - Troy Camarata
- Department of Basic Sciences, NYIT College of Osteopathic Medicine at Arkansas State University, Jonesboro, AR, United States
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14
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Eichelmann AK, Mayne GC, Chiam K, Due SL, Bastian I, Butz F, Wang T, Sykes PJ, Clemons NJ, Liu DS, Michael MZ, Karapetis CS, Hummel R, Watson DI, Hussey DJ. Mutant p53 Mediates Sensitivity to Cancer Treatment Agents in Oesophageal Adenocarcinoma Associated with MicroRNA and SLC7A11 Expression. Int J Mol Sci 2021; 22:ijms22115547. [PMID: 34074015 PMCID: PMC8197322 DOI: 10.3390/ijms22115547] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/12/2021] [Accepted: 05/19/2021] [Indexed: 12/18/2022] Open
Abstract
TP53 gene mutations occur in 70% of oesophageal adenocarcinomas (OACs). Given the central role of p53 in controlling cellular response to therapy we investigated the role of mutant (mut-) p53 and SLC7A11 in a CRISPR-mediated JH-EsoAd1 TP53 knockout model. Response to 2 Gy irradiation, cisplatin, 5-FU, 4-hydroxytamoxifen, and endoxifen was assessed, followed by a TaqMan OpenArray qPCR screening for differences in miRNA expression. Knockout of mut-p53 resulted in increased chemo- and radioresistance (2 Gy survival fraction: 38% vs. 56%, p < 0.0001) and in altered miRNA expression levels. Target mRNA pathways analyses indicated several potential mechanisms of treatment resistance. SLC7A11 knockdown restored radiosensitivity (2 Gy SF: 46% vs. 73%; p = 0.0239), possibly via enhanced sensitivity to oxidative stress. Pathway analysis of the mRNA targets of differentially expressed miRNAs indicated potential involvement in several pathways associated with apoptosis, ribosomes, and p53 signaling pathways. The data suggest that mut-p53 in JH-EsoAd1, despite being classified as non-functional, has some function related to radio- and chemoresistance. The results also highlight the important role of SLC7A11 in cancer metabolism and redox balance and the influence of p53 on these processes. Inhibition of the SLC7A11-glutathione axis may represent a promising approach to overcome resistance associated with mut-p53.
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Affiliation(s)
- Ann-Kathrin Eichelmann
- Flinders Health and Medical Research Institute—Cancer Program, Flinders University, Bedford Park, Adelaide, SA 5042, Australia; (G.C.M.); (K.C.); (S.L.D.); (I.B.); (F.B.); (T.W.); (P.J.S.); (M.Z.M.); (C.S.K.); (D.I.W.)
- Department of General, Visceral and Transplant Surgery, University Hospital of Münster, Waldeyerstrasse 1, 48149 Münster, Germany
- Correspondence: (A.-K.E.); (D.J.H.)
| | - George C. Mayne
- Flinders Health and Medical Research Institute—Cancer Program, Flinders University, Bedford Park, Adelaide, SA 5042, Australia; (G.C.M.); (K.C.); (S.L.D.); (I.B.); (F.B.); (T.W.); (P.J.S.); (M.Z.M.); (C.S.K.); (D.I.W.)
- Department of Surgery, Flinders Medical Centre, Bedford Park, Adelaide, SA 5042, Australia
| | - Karen Chiam
- Flinders Health and Medical Research Institute—Cancer Program, Flinders University, Bedford Park, Adelaide, SA 5042, Australia; (G.C.M.); (K.C.); (S.L.D.); (I.B.); (F.B.); (T.W.); (P.J.S.); (M.Z.M.); (C.S.K.); (D.I.W.)
| | - Steven L. Due
- Flinders Health and Medical Research Institute—Cancer Program, Flinders University, Bedford Park, Adelaide, SA 5042, Australia; (G.C.M.); (K.C.); (S.L.D.); (I.B.); (F.B.); (T.W.); (P.J.S.); (M.Z.M.); (C.S.K.); (D.I.W.)
| | - Isabell Bastian
- Flinders Health and Medical Research Institute—Cancer Program, Flinders University, Bedford Park, Adelaide, SA 5042, Australia; (G.C.M.); (K.C.); (S.L.D.); (I.B.); (F.B.); (T.W.); (P.J.S.); (M.Z.M.); (C.S.K.); (D.I.W.)
| | - Frederike Butz
- Flinders Health and Medical Research Institute—Cancer Program, Flinders University, Bedford Park, Adelaide, SA 5042, Australia; (G.C.M.); (K.C.); (S.L.D.); (I.B.); (F.B.); (T.W.); (P.J.S.); (M.Z.M.); (C.S.K.); (D.I.W.)
| | - Tingting Wang
- Flinders Health and Medical Research Institute—Cancer Program, Flinders University, Bedford Park, Adelaide, SA 5042, Australia; (G.C.M.); (K.C.); (S.L.D.); (I.B.); (F.B.); (T.W.); (P.J.S.); (M.Z.M.); (C.S.K.); (D.I.W.)
| | - Pamela J. Sykes
- Flinders Health and Medical Research Institute—Cancer Program, Flinders University, Bedford Park, Adelaide, SA 5042, Australia; (G.C.M.); (K.C.); (S.L.D.); (I.B.); (F.B.); (T.W.); (P.J.S.); (M.Z.M.); (C.S.K.); (D.I.W.)
| | - Nicholas J. Clemons
- Peter MacCallum Cancer Centre, 305 Grattan St, Melbourne, VIC 3000, Australia; (N.J.C.); (D.S.L.)
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, VIC 3010, Australia
| | - David S. Liu
- Peter MacCallum Cancer Centre, 305 Grattan St, Melbourne, VIC 3000, Australia; (N.J.C.); (D.S.L.)
- Department of Surgery, Austin Health, Heidelberg, VIC 3084, Australia
| | - Michael Z. Michael
- Flinders Health and Medical Research Institute—Cancer Program, Flinders University, Bedford Park, Adelaide, SA 5042, Australia; (G.C.M.); (K.C.); (S.L.D.); (I.B.); (F.B.); (T.W.); (P.J.S.); (M.Z.M.); (C.S.K.); (D.I.W.)
- Department of Gastroenterology, Flinders Medical Centre, Bedford Park, Adelaide, SA 5042, Australia
| | - Christos S. Karapetis
- Flinders Health and Medical Research Institute—Cancer Program, Flinders University, Bedford Park, Adelaide, SA 5042, Australia; (G.C.M.); (K.C.); (S.L.D.); (I.B.); (F.B.); (T.W.); (P.J.S.); (M.Z.M.); (C.S.K.); (D.I.W.)
- Department of Medical Oncology, Flinders Medical Centre, Bedford Park, Adelaide, SA 5042, Australia
| | - Richard Hummel
- Department of Surgery, University Hospital of Schleswig-Holstein, Ratzeburger Allee 160, 23538 Lübeck, Germany;
| | - David I. Watson
- Flinders Health and Medical Research Institute—Cancer Program, Flinders University, Bedford Park, Adelaide, SA 5042, Australia; (G.C.M.); (K.C.); (S.L.D.); (I.B.); (F.B.); (T.W.); (P.J.S.); (M.Z.M.); (C.S.K.); (D.I.W.)
- Department of Surgery, Flinders Medical Centre, Bedford Park, Adelaide, SA 5042, Australia
| | - Damian J. Hussey
- Flinders Health and Medical Research Institute—Cancer Program, Flinders University, Bedford Park, Adelaide, SA 5042, Australia; (G.C.M.); (K.C.); (S.L.D.); (I.B.); (F.B.); (T.W.); (P.J.S.); (M.Z.M.); (C.S.K.); (D.I.W.)
- Department of Surgery, Flinders Medical Centre, Bedford Park, Adelaide, SA 5042, Australia
- Correspondence: (A.-K.E.); (D.J.H.)
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15
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Yan HH, Zhang Q, Cheng R, Zhu F, Liu JJ, Gao PF, Zou HY, Liang GL, Huang CZ, Wang J. Size-Dependent Plasmonic Resonance Scattering Characteristics of Gold Nanorods for Highly Sensitive Detection of microRNA-27a. ACS APPLIED BIO MATERIALS 2021; 4:3469-3475. [DOI: 10.1021/acsabm.1c00029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hui Hong Yan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P. R. China
| | - Qiang Zhang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P. R. China
| | - Ru Cheng
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P. R. China
| | - Fu Zhu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P. R. China
| | - Jia Jun Liu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P. R. China
| | - Peng Fei Gao
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P. R. China
| | - Hong Yan Zou
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P. R. China
| | - Gao Lin Liang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing, Jiangsu 210096, P. R. China
| | - Cheng Zhi Huang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P. R. China
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Chongqing Science and Technology Bureau, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Jian Wang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P. R. China
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16
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Li W, Qin Y, Zhou R, Liu Y, Zhang G. High expression of SIX1 is an independent predictor of poor prognosis in endometrial cancer. Am J Transl Res 2021; 13:2840-2848. [PMID: 34017447 PMCID: PMC8129400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 01/24/2021] [Indexed: 06/12/2023]
Abstract
Objective: The overexpression of transcription factor Sine oculis homeobox 1 (SIX1) is discovered in various malignant tumors and has been known to be closely associated with tumorigenesis, progression and prognosis. This study aims to determine the role of SIX1 in endometrial cancer (EC). Methods: In this study, we analyzed the SIX1 expression profile and the correlation with the corresponding clinical characteristics of EC samples from the Cancer Genome Atlas (TCGA), Gene Expression Omnibus (GEO) and Clinical Proteomic Tumor Analysis Consortium (CPTAC) databases. Wilcoxon signed-rank test was applied to analyze the difference between tumor group and control group. The potential biological processes or signaling pathways related to SIX1 activity in EC was also assessed. Results: The results showed that SIX1 was overexpressed in EC tissues compared to normal tissues (P=2.029e-15, P=6.25e-6). The SIX1 level was correlated with tumor grade (P=2.91e-4), peritoneal cytology (P=0.005), and the subsequent tumor surgery (P=1.169e-4). SIX1 expression was negatively associated with overall survival rate (P=4.241e-4, P=0.000241) and served as an independent factor that affected EC overall survival rate (P=0.005063), similar to other factors such as age, Figo stage, and tumor (T) stage. SIX1 participates in cancer pathogenesis through gene regulation that involves PI3K/AKT/MTOR signaling, mitotic spindle, G2M checkpoint, E2F targets, NOTCH signaling, glycolysis, cholesterol homeostasis, DNA repair and early estrogen response. Conclusions: Our data demonstrate that SIX1 is overexpressed in EC and associated with adverse clinicopathological outcomes, which can function as an independent factor for EC prognosis.
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Affiliation(s)
- Wenxue Li
- Department of Obstetrics and Gynecology, Qilu Hospital, Cheeloo College of Medicine, Shandong UniversityJi’nan 250012, Shandong, China
- Department of Obstetrics and Gynecology, The Affiliated Weihai Second Municipal Hospital of Qingdao UniversityWeihai 264200, Shandong, China
| | - Yujing Qin
- Department of Obstetrics and Gynecology, The Affiliated Weihai Second Municipal Hospital of Qingdao UniversityWeihai 264200, Shandong, China
| | - Ruiqi Zhou
- Department of Obstetrics and Gynecology, Qilu Hospital, Cheeloo College of Medicine, Shandong UniversityJi’nan 250012, Shandong, China
| | - Yao Liu
- Department of Obstetrics and Gynecology, Qilu Hospital, Cheeloo College of Medicine, Shandong UniversityJi’nan 250012, Shandong, China
| | - Guiyu Zhang
- Department of Obstetrics and Gynecology, Qilu Hospital, Cheeloo College of Medicine, Shandong UniversityJi’nan 250012, Shandong, China
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17
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Shuai T, Khan MR, Zhang XD, Li J, Thorne RF, Wu M, Shao F. lncRNA TRMP-S directs dual mechanisms to regulate p27-mediated cellular senescence. MOLECULAR THERAPY-NUCLEIC ACIDS 2021; 24:971-985. [PMID: 34094715 PMCID: PMC8141606 DOI: 10.1016/j.omtn.2021.04.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 04/05/2021] [Indexed: 01/10/2023]
Abstract
Long noncoding RNAs (lncRNAs) undergo extensive alternative splicing, but little is known about isoform functions. A prior investigation of lncRNA RP11-369C8.1 reported that its splice variant TRMP suppressed p27 translation through PTBP1. Here we characterize a second major splice variant, TRMP-S (short variant), whose enforced loss promotes cancer cell-cycle arrest and p27-dependent entry into cellular senescence. Remarkably, despite sharing a single common exon with TRMP, TRMP-S restrains p27 expression through distinct mechanisms. First, TRMP-S stabilizes UHRF1 protein levels, an epigenetic inhibitor of p27, by promoting interactions between UHRF1 and its deubiquitinating enzyme USP7. Alternatively, binding interactions between TRMP-S and FUBP3 prevent p53 mRNA interactions with RPL26 ribosomal protein, the latter essential for promoting p53 translation with ensuing suppression of p53 translation limiting p27 expression. Significantly, as TRMP-S is itself transactivated by p53, this identifies negative feedback regulation between p53 and TRMP-S. Different splicing variants of the RP11-369C8.1 gene thereby exert distinct roles that converge on the homeostatic control of p27 expression, providing an important precedent for understanding the actions of alternatively spliced lncRNAs.
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Affiliation(s)
- Tian Shuai
- Translational Research Institute, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou 450003, China
| | - Muhammad Riaz Khan
- Translational Research Institute, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou 450003, China
| | - Xu Dong Zhang
- Translational Research Institute, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou 450003, China.,School of Biomedical Sciences & Pharmacy, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Jingmin Li
- Translational Research Institute, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou 450003, China
| | - Rick Francis Thorne
- Translational Research Institute, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou 450003, China.,School of Environmental & Life Sciences, The University of Newcastle, Callaghan, NSW 2258, Australia
| | - Mian Wu
- Translational Research Institute, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou 450003, China.,CAS Key Laboratory of Innate Immunity and Chronic Disease, CAS Centre for Excellence in Molecular Cell Science, the First Affiliated Hospital of University of Science and Technology of China, Hefei 230027, China
| | - Fengmin Shao
- Translational Research Institute, Henan Provincial People's Hospital, School of Clinical Medicine, Henan University, Zhengzhou 450003, China
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18
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Baumann C, Zhang X, De La Fuente R. Loss of CBX2 induces genome instability and senescence-associated chromosomal rearrangements. J Cell Biol 2021; 219:152063. [PMID: 32870972 PMCID: PMC7594495 DOI: 10.1083/jcb.201910149] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 06/08/2020] [Accepted: 08/02/2020] [Indexed: 01/05/2023] Open
Abstract
The polycomb group protein CBX2 is an important epigenetic reader involved in cell proliferation and differentiation. While CBX2 overexpression occurs in a wide range of human tumors, targeted deletion results in homeotic transformation, proliferative defects, and premature senescence. However, its cellular function(s) and whether it plays a role in maintenance of genome stability remain to be determined. Here, we demonstrate that loss of CBX2 in mouse fibroblasts induces abnormal large-scale chromatin structure and chromosome instability. Integrative transcriptome analysis and ATAC-seq revealed a significant dysregulation of transcripts involved in DNA repair, chromocenter formation, and tumorigenesis in addition to changes in chromatin accessibility of genes involved in lateral sclerosis, basal transcription factors, and folate metabolism. Notably, Cbx2−/− cells exhibit prominent decondensation of satellite DNA sequences at metaphase and increased sister chromatid recombination events leading to rampant chromosome instability. The presence of extensive centromere and telomere defects suggests a prominent role for CBX2 in heterochromatin homeostasis and the regulation of nuclear architecture.
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Affiliation(s)
- Claudia Baumann
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, GA.,Regenerative Bioscience Center, University of Georgia, Athens, GA
| | - Xiangyu Zhang
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, GA.,Regenerative Bioscience Center, University of Georgia, Athens, GA
| | - Rabindranath De La Fuente
- Department of Physiology and Pharmacology, College of Veterinary Medicine, University of Georgia, Athens, GA.,Regenerative Bioscience Center, University of Georgia, Athens, GA
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19
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Kong D, Zhou H, Neelakantan D, Hughes CJ, Hsu JY, Srinivasan RR, Lewis MT, Ford HL. VEGF-C mediates tumor growth and metastasis through promoting EMT-epithelial breast cancer cell crosstalk. Oncogene 2021; 40:964-979. [PMID: 33299122 PMCID: PMC7867573 DOI: 10.1038/s41388-020-01539-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 10/07/2020] [Accepted: 10/22/2020] [Indexed: 12/19/2022]
Abstract
It is well established that a subset of cells within primary breast cancers can undergo an epithelial-to-mesenchymal transition (EMT), although the role of EMT in metastasis remains controversial. We previously demonstrated that breast cancer cells that had undergone an oncogenic EMT could increase metastasis of neighboring cancer cells via non-canonical paracrine-mediated activation of GLI activity that is dependent on SIX1 expression in the EMT cancer cells. However, the mechanism by which these SIX1-expressing EMT cells activate GLI signaling remained unclear. In this study, we demonstrate a novel mechanism for activation of GLI-mediated signaling in epithelial breast tumor cells via EMT cell-induced production and secretion of VEGF-C. We show that VEGF-C, secreted by breast cancer cells that have undergone an EMT, promotes paracrine-mediated increases in proliferation, migration, and invasion of epithelial breast cancer cells, via non-canonical activation of GLI-signaling. We further show that the aggressive phenotypes, including metastasis, imparted by EMT cells on adjacent epithelial cancer cells can be disrupted by either inhibiting VEGF-C in EMT cells or by knocking down NRP2, a receptor which interacts with VEGF-C, in neighboring epithelial cancer cells. Interrogation of TCGA and GEO public datasets supports the relevance of this pathway in human breast cancer, demonstrating that VEGF-C strongly correlates with activation of Hedgehog signaling and EMT in the human disease. Our study suggests that the VEGF-C/NRP2/GLI axis is a novel and conserved paracrine means by which EMT cells enhance metastasis, and provides potential targets for therapeutic intervention in this heterogeneous disease.
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Affiliation(s)
- Deguang Kong
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Department of General Surgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Hengbo Zhou
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Program in Cancer Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Deepika Neelakantan
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Program in Molecular Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Connor J Hughes
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Program in Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Medical Scientist Training Program, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Jessica Y Hsu
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Program in Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | | | - Michael T Lewis
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX, USA
| | - Heide L Ford
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
- Program in Cancer Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
- Program in Molecular Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
- Program in Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
- Medical Scientist Training Program, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
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20
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D'Souza LC, Mishra S, Chakraborty A, Shekher A, Sharma A, Gupta SC. Oxidative Stress and Cancer Development: Are Noncoding RNAs the Missing Links? Antioxid Redox Signal 2020; 33:1209-1229. [PMID: 31891666 DOI: 10.1089/ars.2019.7987] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Significance: It is now clear that genetic changes underlie the basis of cancer, and alterations in functions of multiple genes are responsible for the process of tumorigenesis. Besides the classical genes that are usually implicated in cancer, the role of noncoding RNAs (ncRNAs) and reactive oxygen species (ROS) as independent entitites has also been investigated. Recent Advances: The microRNAs and long noncoding RNAs (lncRNAs), two main classes of ncRNAs, are known to regulate many aspects of tumor development. ROS, generated during oxidative stress and pathological conditions, are known to regulate every step of tumor development. Conversely, oxidative stress and ROS producing agents can suppress tumor development. The malignant cells normally produce high levels of ROS compared with normal cells. The interaction between ROS and ncRNAs regulates the expression of multiple genes and pathways implicated in cancer, suggesting a unique mechanistic relationship among ncRNA-ROS-cancer. The mechanistic relationship has been reported in hepatocellular carcinoma, glioma, and malignancies of blood, breast, colorectum, esophagus, kidney, lung, mouth, ovary, pancreas, prostate, and stomach. The ncRNA-ROS regulate several cancer-related cell signaling pathways, namely, protein kinase B (AKT), epidermal growth factor receptor (EGFR), forkhead box O3 (FOXO3), kelch-like ECH-associated protein 1 (Keap1), nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), nuclear factor erythroid 2-related factor 2 (Nrf2), p53, phosphatase and tensin homologue (PTEN), and wingless-related integration site (Wnt)/glycogen synthase kinase-3 beta (GSK3β). Critical Issues: To date, most of the reports about ncRNA-oxidative stress-carcinogenesis relationships are based on cell lines. The mechanistic basis for this relationship has not been completely elucidated. Future Directions: Attempts should be made to explore the association of lncRNAs with ROS. The significance of the ncRNA-oxidative stress-carcinogenesis interplay should also be explored through studies in animal models.
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Affiliation(s)
- Leonard Clinton D'Souza
- Division of Environmental Health and Toxicology, Nitte University Centre for Science Education and Research (NUCSER), Mangaluru, India
| | - Shruti Mishra
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Anirban Chakraborty
- Division of Molecular Genetics and Cancer, Nitte University Centre for Science Education and Research (NUCSER), Mangaluru, India
| | - Anusmita Shekher
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Anurag Sharma
- Division of Environmental Health and Toxicology, Nitte University Centre for Science Education and Research (NUCSER), Mangaluru, India
| | - Subash Chandra Gupta
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, India
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21
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Zanjirband M, Rahgozar S. Targeting p53-MDM2 Interaction Using Small Molecule Inhibitors and the Challenges Needed to be Addressed. Curr Drug Targets 2020; 20:1091-1111. [PMID: 30947669 DOI: 10.2174/1389450120666190402120701] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/25/2019] [Accepted: 03/26/2019] [Indexed: 12/16/2022]
Abstract
MDM2 protein is the core negative regulator of p53 that maintains the cellular levels of p53 at a low level in normal cells. Mutation of the TP53 gene accounts for 50% of all human cancers. In the remaining malignancies with wild-type TP53, p53 function is inhibited through other mechanisms. Recently, synthetic small molecule inhibitors have been developed which target a small hydrophobic pocket on MDM2 to which p53 normally binds. Given that MDM2-p53 antagonists have been undergoing clinical trials for different types of cancer, this review illustrates different aspects of these new cancer targeted therapeutic agents with the focus on the major advances in the field. It emphasizes on the p53 function, regulation of p53, targeting of the p53-MDM2 interaction for cancer therapy, and p53-dependent and -independent effects of inhibition of p53-MDM2 interaction. Then, representatives of small molecule MDM2-p53 binding antagonists are introduced with a focus on those entered into clinical trials. Furthermore, the review discusses the gene signatures in order to predict sensitivity to MDM2 antagonists, potential side effects and the reasons for the observed hematotoxicity, mechanisms of resistance to these drugs, their evaluation as monotherapy or in combination with conventional chemotherapy or with other targeted therapeutic agents. Finally, it highlights the certainly intriguing questions and challenges which would be addressed in future studies.
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Affiliation(s)
- Maryam Zanjirband
- Department of Cellular and Molecular Biology, Faculty of Science, University of Isfahan, Azadi Square, Isfahan, Iran
| | - Soheila Rahgozar
- Department of Cellular and Molecular Biology, Faculty of Science, University of Isfahan, Azadi Square, Isfahan, Iran
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22
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Karan D, Dubey S, Pirisi L, Nagel A, Pina I, Choo YM, Hamann MT. The Marine Natural Product Manzamine A Inhibits Cervical Cancer by Targeting the SIX1 Protein. JOURNAL OF NATURAL PRODUCTS 2020; 83:286-295. [PMID: 32022559 PMCID: PMC7161578 DOI: 10.1021/acs.jnatprod.9b00577] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Indexed: 06/10/2023]
Abstract
Natural products remain an important source of drug leads covering unique chemical space and providing significant therapeutic value for the control of cancer and infectious diseases resistant to current drugs. Here, we determined the antiproliferative activity of a natural product manzamine A (1) from an Indo-Pacific sponge following various in vitro cellular assays targeting cervical cancer (C33A, HeLa, SiHa, and CaSki). Our data demonstrated the antiproliferative effects of 1 at relatively low and non-cytotoxic concentrations (up to 4 μM). Mechanistic investigations confirmed that 1 blocked cell cycle progression in SiHa and CaSki cells at G1/S phase and regulated cell cycle-related genes, including restoration of p21 and p53 expression. In apoptotic assays, HeLa cells showed the highest sensitivity to 1 as compared to other cell types (C33A, SiHa, and CaSki). Interestingly, 1 decreased the levels of the oncoprotein SIX1, which is associated with oncogenesis in cervical cancer. To further investigate the structure-activity relationship among manzamine A (1) class with potential antiproliferative activity, molecular networking facilitated the efficient identification, dereplication, and assignment of structures from the manzamine class and revealed the significant potential in the design of optimized molecules for the treatment of cervical cancer. These data suggest that this sponge-derived natural product class warrants further attention regarding the design and development of novel manzamine analogues, which may be efficacious for preventive and therapeutic treatment of cancer. Additionally, this study reveals the significance of protecting fragile marine ecosystems from climate change-induced loss of species diversity.
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Affiliation(s)
- Dev Karan
- Department
of Pathology, MCW Cancer Center and Prostate Cancer Center of Excellence, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, Wisconsin, United States
| | - Seema Dubey
- Department
of Pathology, MCW Cancer Center and Prostate Cancer Center of Excellence, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, Wisconsin, United States
| | - Lucia Pirisi
- Department
of Pathology, Microbiology and Immunology, University of South Carolina School of Medicine, Columbia, South Carolina, United States
| | - Alexis Nagel
- Department
of Drug Discovery and Biomedical Sciences, Medical University of South Carolina, Charleston, South Carolina, United States
| | - Ivett Pina
- Department
of Drug Discovery and Biomedical Sciences, Medical University of South Carolina, Charleston, South Carolina, United States
| | - Yeun-Mun Choo
- Department
of Chemistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Mark T Hamann
- Department
of Drug Discovery and Biomedical Sciences, Medical University of South Carolina, Charleston, South Carolina, United States
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MicroRNA-27a-3p aggravates renal ischemia/reperfusion injury by promoting oxidative stress via targeting growth factor receptor-bound protein 2. Pharmacol Res 2020; 155:104718. [PMID: 32084559 DOI: 10.1016/j.phrs.2020.104718] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 01/28/2020] [Accepted: 02/18/2020] [Indexed: 12/24/2022]
Abstract
Renal ischemia-reperfusion (RI/R) injury with high morbidity and mortality is one common clinical disease. Development of drug targets to treat the disorder is critical important. MiR-27a-3p plays important roles in regulating oxidative stress. However, its effects on RI/R injury have not been reported. In this paper, hypoxia/reoxygenation (H/R) models on NRK-52E and HK-2 cells, and RI/R model in C57BL/6 mice were established. The results showed that H/R in vitro decreased cell viability and increased ROS levels in cells, and RI/R caused renal injury and oxidative damage in mice. The expression levels of miR-27a-3p were up-regulated based on real-time PCR and FISH assays in model groups compared with control groups, which directly targeted Grb2 based on dual luciferase reporter assay and co-transfaction test. In addition, miR-27a- 3p markedly reduced Grb2 expression to down-regulate the expression levels of p-PI3K, p-AKT, Nrf2, HO-1, and up-regulate Keap1 expression in model groups. MiR-27a-3p mimics in vitro enhanced H/R-caused oxidative stress via increasing ROS levels and decreasing Grb2 expression to down-regulate PI3K-AKT signal. In contrary, miR-27a-3p inhibitor in vitro significantly reduced H/R-caused oxidative damage via decreasing ROS levels and increasing Grb2 expression to up-regulate PI3K-AKT signal. In vivo, miR-27a- 3p agomir exacerbated RI/R-caused renal damage by decreasing SOD level and increasing Cr, BUN, MDA levels via suppressing Grb2 expression to down-regulate PI3K- AKT signal. However, miR-27a -3p antagomir alleviated RI/R-caused oxidative damage via increasing Grb2 expression to up-regulate PI3k-AKT signal. Grb2siRNA in mice further enhanced RI/R-caused renal injury by increasing Cr, BUN, MDA levels and decreasing SOD level via inhibiting the expression levels of Grb2, Nrf2, HO-1, and increasing Keap1 expression. Our data showed that miR-27a-3p aggravated RI/R injury by promoting oxidative stress via targeting Grb2, which should be considered as one new drug target to treat RI/R injury.
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TIP5 primes prostate luminal cells for the oncogenic transformation mediated by PTEN-loss. Proc Natl Acad Sci U S A 2020; 117:3637-3647. [PMID: 32024754 PMCID: PMC7035629 DOI: 10.1073/pnas.1911673117] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The cell of origin and the temporal order of oncogenic events in tumors play important roles for disease state. This is of particular interest for PCa due to its highly variable clinical outcome. However, these features are difficult to analyze in tumors. We established an in vitro murine PCa organoid model taking into account the cell of origin and the temporal order of events. We found that TIP5 primes luminal prostate cells for Pten-loss mediated oncogenic transformation whereas it is dispensable once the transformation is established. Cross-species transcriptomic analyses revealed a PTEN-loss gene signature that identified a set of aggressive tumors with PTEN-del, or low PTEN expression, and high-TIP5 expression. This paper provides a powerful tool to elucidate PCa mechanisms. Prostate cancer (PCa) is the second leading cause of cancer death in men. Its clinical and molecular heterogeneities and the lack of in vitro models outline the complexity of PCa in the clinical and research settings. We established an in vitro mouse PCa model based on organoid technology that takes into account the cell of origin and the order of events. Primary PCa with deletion of the tumor suppressor gene PTEN (PTEN-del) can be modeled through Pten-down-regulation in mouse organoids. We used this system to elucidate the contribution of TIP5 in PCa initiation, a chromatin regulator that is implicated in aggressive PCa. High TIP5 expression correlates with primary PTEN-del PCa and this combination strongly associates with reduced prostate-specific antigen (PSA) recurrence-free survival. TIP5 is critical for the initiation of PCa of luminal origin mediated by Pten-loss whereas it is dispensable once Pten-loss mediated transformation is established. Cross-species analyses revealed a PTEN gene signature that identified a group of aggressive primary PCas characterized by PTEN-del, high-TIP5 expression, and a TIP5-regulated gene expression profile. The results highlight the modeling of PCa with organoids as a powerful tool to elucidate the role of genetic alterations found in recent studies in their time orders and cells of origin, thereby providing further optimization for tumor stratification to improve the clinical management of PCa.
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25
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Kong D, Li A, Liu Y, Cui Q, Wang K, Zhang D, Tang J, Du Y, Liu Z, Wu G, Wu K. SIX1 Activates STAT3 Signaling to Promote the Proliferation of Thyroid Carcinoma via EYA1. Front Oncol 2019; 9:1450. [PMID: 31921695 PMCID: PMC6933607 DOI: 10.3389/fonc.2019.01450] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 12/04/2019] [Indexed: 11/17/2022] Open
Abstract
As a critical member of the Retinal Determination Gene Network (RDGN), SIX1 has been regarded as a tumor promoter in various types of cancer. However, its role in papillary thyroid carcinoma (PTC) has never been investigated. In this study, thyroid carcinoma tissue microarray staining was employed to identify the expression patterns of SIX1 and its co-activator EYA1. Papillary thyroid cancer cell lines, BCPAP, and TPC-1 cells were used to investigate the potential mechanism of SIX1 in vitro and in vivo. Flow cytometry analysis, MTT assay, the growth curve assay, colony formation assay, EdU incorporation and xenograft assay were performed to demonstrate the role of SIX1 in the malignant change of PTC cells. Western blot and Real-time PCR were used to detect the interaction among the SIX1, EYA1, and STAT3 signaling. In comparison with normal tissue, high expressions of SIX1 and EYA1 were associated with a malignant tumor. Importantly, SIX1 strongly correlated with EYA1 in thyroid carcinoma tissue microarray. Functional assays indicated SIX1 increased EYA1 expression by stabilizing EYA1 at the post-transcriptional level. Besides, SIX1 promoted the proliferation and invasion of thyroid carcinoma via activation of STAT3 signaling and its downstream targets in an EYA1-dependent manner. SIX1 can integrate with EYA1 to contribute to PTC development via activation of the classical STAT3 signaling. These data suggested targeting the abnormal activation of the SIX1/EYA1 complex may represent a novel therapeutic strategy for advanced PTC patients.
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Affiliation(s)
- Deguang Kong
- Department of General Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Anping Li
- Department of Medical Oncology, The Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Zhengzhou, China
| | - Yu Liu
- Department of Geriatrics, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qiuxia Cui
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Kun Wang
- Department of Thyroid and Breast Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dan Zhang
- Department of Thyroid and Breast Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jianing Tang
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yaying Du
- Department of Thyroid and Breast Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhisu Liu
- Department of General Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Gaosong Wu
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Kongming Wu
- Department of Medical Oncology, The Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Zhengzhou, China
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26
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Yang F, Zhai Z, Luo X, Luo G, Zhuang L, Zhang Y, Li Y, Sun E, He Y. Bioinformatics identification of key candidate genes and pathways associated with systemic lupus erythematosus. Clin Rheumatol 2019; 39:425-434. [PMID: 31673979 DOI: 10.1007/s10067-019-04751-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 07/13/2019] [Accepted: 08/15/2019] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Systemic lupus erythematosus (SLE) is a complex autoimmune disease characterized by autoantibody production and multi-system involvement, but the etiology is largely unclear. This study aimed to elucidate candidate genes and pathways involved in SLE. METHODS Three original datasets GSE72509, GSE20864, and GSE39088 were downloaded from Gene Expression Omnibus (GEO) and the data were further integrated and analyzed. Subsequently, differentially expressed genes (DEGs) between SLE patients and healthy people were identified. And then we performed gene ontology (GO) function and pathway enrichment analyses of common DEGs, and constructed a protein-protein interaction (PPI) network with STRING database. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was carried out to validate the expression levels of candidate genes in blood samples from SLE patients and healthy controls. RESULTS In total, 321 common DEGs were identified in SLE patients compared with healthy controls, including 231 upregulated and 90 downregulated genes. GO function analysis revealed that 321 common DEGs were mainly enriched in innate immune response, defense response, cytokine-mediated signaling pathway, response to interferon-alpha, and I-kappaB kinase/NF-kappaB signaling. Additionally, pathway enrichment analysis indicated that DEGs were mainly enriched in several signaling pathways associated with immune system and apoptosis, including RIG-I-like receptor signaling pathway, antigen processing and presentation, and p53 signaling pathway. The expression levels of candidate genes RPL26L1, FBXW11, FOXO1, and SMAD7 were validated by RT-qPCR analysis. CONCLUSIONS The four hub genes including RPL26L1, FBXW11, FOXO1, and SMAD7 may play key roles in the pathogenesis and development of SLE. RIG-I-like receptor signaling pathway, antigen processing and presentation pathway, and p53 signaling pathway may be closely implicated in SLE pathogenesis. Collectively, these results may provide valuable novel markers or targets for the diagnosis and treatment of SLE.Key Points• Integrated bioinformatics analysis of three profile datasets based on SLE patients and healthy controls was performed and 321 common DEGs were identified.• The 321 common DEGs were mainly enriched in biological processes related to immune responses and inflammatory responses, including innate immune response, defense response, cytokine-mediated signaling pathway, response to interferon-alpha, I-kappaB kinase/NF-kappaB signaling, whereas the three most significant cellular components were oxidoreductase complex, AIM2 inflammasome complex, and ubiquitin ligase complex.• KEGG pathway enrichment analysis indicated that common DEGs were mainly enriched in several signaling pathways associated with immune system and apoptosis, including RIG-I-like receptor signaling pathway, antigen processing and presentation, and p53 signaling pathway.• Candidate genes RPL26L1, FBXW11, FOXO1, and SMAD7 may be closely involved in the pathogenesis and development of SLE and may provide valuable novel markers or targets for the diagnosis and treatment of SLE.
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Affiliation(s)
- Fangyuan Yang
- Department of Rheumatology and Immunology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.,Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, Guangzhou, China
| | - Zeqing Zhai
- Department of Rheumatology and Immunology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.,Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, Guangzhou, China
| | - Xiaoqing Luo
- Department of Rheumatology and Immunology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.,Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, Guangzhou, China
| | - Guihu Luo
- Department of Rheumatology and Immunology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.,Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, Guangzhou, China
| | - Lili Zhuang
- Department of Rheumatology and Immunology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.,Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, Guangzhou, China
| | - Yanan Zhang
- Department of Rheumatology and Immunology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.,Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, Guangzhou, China
| | - Yehao Li
- Department of Rheumatology and Immunology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.,Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, Guangzhou, China
| | - Erwei Sun
- Department of Rheumatology and Immunology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China. .,Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, Guangzhou, China.
| | - Yi He
- Department of Rheumatology and Immunology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China. .,Institute of Clinical Immunology, Academy of Orthopedics, Guangdong Province, Guangzhou, China.
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27
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Zhu Z, Rong Z, Luo Z, Yu Z, Zhang J, Qiu Z, Huang C. Circular RNA circNHSL1 promotes gastric cancer progression through the miR-1306-3p/SIX1/vimentin axis. Mol Cancer 2019; 18:126. [PMID: 31438963 PMCID: PMC6704702 DOI: 10.1186/s12943-019-1054-7] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 08/14/2019] [Indexed: 12/14/2022] Open
Abstract
Background Mounting evidences indicate that circular RNAs (circRNAs) play vital roles in the development and progression of various cancers. However, the detail functions and underlying mechanisms of circRNAs in gastric cancer remain largely unknown. Methods The expression profile of metastasis-related circRNAs was screened by RNA-seq analysis. qRT-PCR was used to determine the level and prognostic values of circNHSL1 in gastric cancer tissues. In vitro cell wound healing and transwell (migration and invasion) and in vivo tumorigenesis and metastasis assays were performed to evaluate the functions of circNHSL1. Luciferase reporter, RNA immunoprecipitation (RIP) and rescued assays were employed to confirm the interactions between circNHSL1, miR-1306-3p and SIX1. It’s widely accepted that as a mesenchymal marker, Vimentin promotes invasion and metastasis in various cancers. Luciferase reporter assay was used to determine the regulation of SIX1 on Vimentin. In addition, In situ hybridization (ISH) was performed to detect the level and prognostic values of miR-1306-3p. Results We found that the level of circNHSL1 was significantly up-regulated in gastric cancer, and positively correlated with clinicopathological features and poor prognosis of patients with gastric cancer. Functionally, circNHSL1 promoted cell mobility and invasion, as well as in vivo tumorgenesis and metastasis. Mechanistically, circNHSL1 acted as a miR-1306-3p sponge to relieve the repressive effect of miR-1306-3p on its target SIX1. Moreover, SIX1 enhanced Vimentin expression in the transcriptional level through directly binding to the promoter domain of Vimentin, thereby promoting cell migration and invasion. In addition, miR-1306-3p was down-regulated and negatively correlated with pathological features and poor prognosis in gastric cancer. Conclusions CircNHSL1 promotes gastric cancer progression through miR-1306-3p/SIX1/Vimentin axis, and may serve as a novel diagnostic marker and target for treatment of gastric cancer patients. Electronic supplementary material The online version of this article (10.1186/s12943-019-1054-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Zhonglin Zhu
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 650 Xinsongjiang Road, Songjiang District, Shanghai, 201600, China
| | - Zeyin Rong
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 650 Xinsongjiang Road, Songjiang District, Shanghai, 201600, China
| | - Zai Luo
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 650 Xinsongjiang Road, Songjiang District, Shanghai, 201600, China
| | - Zhilong Yu
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 650 Xinsongjiang Road, Songjiang District, Shanghai, 201600, China
| | - Jing Zhang
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 650 Xinsongjiang Road, Songjiang District, Shanghai, 201600, China
| | - Zhengjun Qiu
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 650 Xinsongjiang Road, Songjiang District, Shanghai, 201600, China
| | - Chen Huang
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, 650 Xinsongjiang Road, Songjiang District, Shanghai, 201600, China.
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Cui M, Yao X, Lin Y, Zhang D, Cui R, Zhang X. Interactive functions of microRNAs in the miR-23a-27a-24-2 cluster and the potential for targeted therapy in cancer. J Cell Physiol 2019; 235:6-16. [PMID: 31192453 DOI: 10.1002/jcp.28958] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 05/23/2019] [Accepted: 05/24/2019] [Indexed: 12/18/2022]
Abstract
MicroRNAs (miRNAs) are small noncoding RNAs about 19-22 nucleotides in length. Growing evidence has reported the significant role of miRNAs in various cancer-associated biological processes, such as proliferation, differentiation, apoptosis, metabolism, invasion, metastasis, and drug resistance. However, most studies focus on the targets of some individual miRNAs; the interactive and global functions of diverse miRNAs are still unclear and the phenomenon of the gathering of miRNAs in clusters has always been ignored. On the other hand, the fact that a single miRNA may regulate many genes and that numerous mRNAs are regulated by the same miRNA also makes it imperative to further study the cooperating characteristics of miRNAs in cancer. MiR-23a-27a-24-2 is located in the human chromosome 9q22, forming three mature miRNAs: miR-23a, miR27a, and miR-24, which are expressed abnormally in many malignant tumors. This review aims to summarize the interactive functions of miRNAs in miR-23a-27a-24-2 clusters in cancer from the perspectives of the regulation network, tumor microenvironment, and targeted therapy.
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Affiliation(s)
- Mengying Cui
- Department of Hepatobiliary and Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, P. R. China
| | - Xiaoxiao Yao
- Department of Hepatobiliary and Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, P. R. China
| | - Yang Lin
- Department of Hepatobiliary and Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, P. R. China
| | - Dan Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, P. R. China
| | - Ranji Cui
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, The Second Hospital of Jilin University, Changchun, P. R. China
| | - Xuewen Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Hospital of Jilin University, Changchun, P. R. China
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29
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Wan J, Yang J, Qiao C, Sun X, Di A, Zhang L, Wang D, Zhao G. MicroRNA-362 Inhibits Cell Proliferation and Invasion by Directly Targeting SIX1 in Colorectal Cancer. Yonsei Med J 2019; 60:414-422. [PMID: 31016902 PMCID: PMC6479121 DOI: 10.3349/ymj.2019.60.5.414] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/27/2019] [Accepted: 03/07/2019] [Indexed: 12/24/2022] Open
Abstract
PURPOSE Colorectal cancer (CRC) is the third most common cancer in China and poses high morbidity and mortality. In recent years, increasing evidence has indicated that microRNAs played important functions in the occurrence and development of tumors. The purpose of this study was to identify the biological mechanisms of miR-362 in CRC. MATERIALS AND METHODS Quantitative real-time PCR was carried out to assess the expression of miR-362 and SIX1. The Kaplan-Meier method was employed to evaluate the 5-year overall survival of CRC patients. The proliferative and invasive abilities of CRC cells were assessed by MTT and transwell assays. RESULTS miR-362 was significantly decreased in CRC tissues and cell lines, compared to the normal tissues and normal cells. A significant connection was confirmed between the overall survival of 53 CRC patients and low expression of miR-362. Downregulation of miR-362 inhibited the proliferation and invasion through binding to the 3'-UTR of SIX1 mRNA in CRC. Additionally, we discovered that SIX1 was a direct target gene of miR-362 and that the expression of miR-362 had a negative connection with SIX1 expression in CRC. SIX1 could reverse partial functions in the proliferation and invasion in CRC cells. CONCLUSION miR-362 may be a prognostic marker in CRC and suppress CRC cell proliferation and invasion in part through targeting the 3'-UTR of SIX1 mRNA. The newly identified miR-362/SIX1 axis provides insight into the progression of CRC.
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Affiliation(s)
- Jin'e Wan
- Department of Hyperbaric Oxygen, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jian Yang
- Department of Oncology, Zouping Centre Hospital, Binzhou, China
| | - Cuixia Qiao
- Department of Anorectal Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaomei Sun
- Department of Anorectal Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Aiting Di
- Department of Anorectal Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Lize Zhang
- Department of Anorectal Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Dandan Wang
- Department of Anorectal Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Gang Zhao
- Department of Anorectal Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China.
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30
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Song W, Ma J, Lei B, Yuan X, Cheng B, Yang H, Wang M, Feng Z, Wang L. Sine oculis homeobox 1 promotes proliferation and migration of human colorectal cancer cells through activation of Wnt/β-catenin signaling. Cancer Sci 2019; 110:608-616. [PMID: 30548112 PMCID: PMC6361609 DOI: 10.1111/cas.13905] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 11/29/2018] [Accepted: 12/02/2018] [Indexed: 12/11/2022] Open
Abstract
Sine oculis homeobox 1 (Six1) is a homeodomain transcription factor that is aberrantly expressed in a variety of human cancers, including colorectal cancer (CRC). Six1 has been reported to play a key role in the proliferation and migration of CRC cells but the underlying molecular mechanisms are still poorly characterized. In the present study, we found that Six1 overexpression promoted the proliferation and migration of CRC cells. Consistently, Six1 knockdown (KD) significantly inhibited proliferation and migration of CRC cells. In addition, we showed that Six1 promoted proliferation and migration of CRC cells through activation of Wnt/β‐catenin signaling, as evidenced by promotion of nuclear localization of β‐catenin. Silencing of β‐catenin expression with siRNA or inhibiting Wnt signaling with a specific inhibitor, xav939, significantly blocked Six1‐induced nuclear localization of β‐catenin and mitigated Six1‐promoted proliferation and migration of CRC cells. We further confirmed the involvement of β‐catenin in Six1‐promoted proliferation and migration of CRC cells by activation of Wnt signaling with lithium chloride (LiCl) in Six1 KD CRC cells and results showed that LiCl restores defective β‐catenin nuclear localization and proliferation and migration of CRC cells. Taken together, these results suggest that Six1 homeoprotein promotes the proliferation and migration of CRC cells by activating the Wnt/β‐catenin signaling pathway, and strategies targeting Six1 may be promising for the treatment of CRC.
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Affiliation(s)
- Wenxin Song
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, China.,Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
| | - Jian Ma
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, China
| | - Bingbing Lei
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, China
| | - Xin Yuan
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, China
| | - Binfeng Cheng
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, China
| | - Haijie Yang
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, China
| | - Mian Wang
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, China
| | - Zhiwei Feng
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, China.,Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang, China
| | - Lei Wang
- School of Life Sciences and Technology, Xinxiang Medical University, Xinxiang, China
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31
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Kingsbury TJ, Kim M, Civin CI. Regulation of cancer stem cell properties by SIX1, a member of the PAX-SIX-EYA-DACH network. Adv Cancer Res 2019; 141:1-42. [PMID: 30691681 DOI: 10.1016/bs.acr.2018.12.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The PAX-SIX-EYA-DACH network (PSEDN) is a central developmental transcriptional regulatory network from Drosophila to humans. The PSEDN is comprised of four conserved protein families; including paired box (PAX), sine oculis (SIX), eyes absent (EYA), and dachshund (DACH). Aberrant expression of PSEDN members, particularly SIX1, has been observed in multiple human cancers, where SIX1 expression correlates with increased aggressiveness and poor prognosis. In conjunction with its transcriptional activator EYA, the SIX1 transcription factor increases cancer stem cell (CSC) numbers and induces epithelial-mesenchymal transition (EMT). SIX1 promotes multiple hallmarks and enabling characteristics of cancer via regulation of cell proliferation, senescence, apoptosis, genome stability, and energy metabolism. SIX1 also influences the tumor microenvironment, enhancing recruitment of tumor-associated macrophages and stimulating angiogenesis, to promote tumor development and progression. EYA proteins are multifunctional, possessing a transcriptional activation domain and tyrosine phosphatase activity, that each contributes to cancer stem cell properties. DACH proteins function as tumor suppressors in solid cancers, opposing the actions of SIX-EYA and reducing CSC prevalence. Multiple mechanisms can lead to increased SIX1 expression, including loss of SIX1-targeting tumor suppressor microRNAs (miRs), whose expression correlates inversely with SIX1 expression in cancer patient samples. In this review, we discuss the major mechanisms by which SIX1 confers CSC and EMT features and other important cancer cell characteristics. The roles of EYA and DACH in CSCs and cancer progression are briefly highlighted. Finally, we summarize the clinical significance of SIX1 in cancer to emphasize the potential therapeutic benefits of effective strategies to disrupt PSEDN protein interactions and functions.
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32
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Tao H, Xiong Q, Ji Z, Zhang F, Liu Y, Chen M. NFAT5 is Regulated by p53/miR-27a Signal Axis and Promotes Mouse Ovarian Granulosa Cells Proliferation. Int J Biol Sci 2019; 15:287-297. [PMID: 30745821 PMCID: PMC6367550 DOI: 10.7150/ijbs.29273] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 11/13/2018] [Indexed: 12/13/2022] Open
Abstract
MicroRNAs (miRNAs) play key roles in mammalian folliculogenesis (a complex process in which primordial follicles develop into mature oocytes) by inhibiting mRNA translation or by inducing its degradation, while the role of miRNA in folliculogenesis and regulation mechanism remain unclear. In this study, we explored the role of the p53/miR-27a/nuclear factor of activated T-cells 5 (NFAT5) signaling axis in mouse ovarian granulosa cell proliferation. Luciferase reporter assay, overexpression, site-directed mutagenesis, and chromatin immunoprecipitation (ChIP) assay results showed that the transcription factor p53 significantly decreased the expression level of miR-27a by binding to sites 4 (-646 to -637 bp) and 10 (-50 to -41 bp) of the miR-27a promoter. Moreover, miR-27a directly targeted the 3′-untranslated region of the target gene, NFAT5, to regulate its expression levels. p53 also upregulated the expression of NFAT5. Meanwhile, overexpression of NFAT5 strongly upregulated the mRNA and protein levels of the Wnt signaling genes, β-catenin and B-Cell CLL/Lymphoma 2 (Bcl-2). In addition, NFAT5 promoted mouse granulosa cell proliferation; this was confirmed by EdU/Hoechst immunostaining. Taken together, our findings define a novel pathway p53/miR-27a/NFAT5, and NFAT5 regulates mouse granulosa cell functions via activating Wnt signaling pathway.
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Affiliation(s)
- Hu Tao
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Qi Xiong
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Ziyun Ji
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Feng Zhang
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Yang Liu
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Mingxin Chen
- Hubei Key Laboratory of Animal Embryo Engineering and Molecular Breeding, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
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33
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Molavi G, Samadi N, Hosseingholi EZ. The roles of moonlight ribosomal proteins in the development of human cancers. J Cell Physiol 2018; 234:8327-8341. [PMID: 30417503 DOI: 10.1002/jcp.27722] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 09/23/2018] [Indexed: 12/13/2022]
Abstract
"Moonlighting protein" is a term used to define a single protein with multiple functions and different activities that are not derived from gene fusions, multiple RNA splicing, or the proteolytic activity of promiscuous enzymes. Different proteinous constituents of ribosomes have been shown to have important moonlighting extra-ribosomal functions. In this review, we introduce the impact of key moonlight ribosomal proteins and dependent signal transduction in the initiation and progression of various cancers. As a future perspective, the potential role of these moonlight ribosomal proteins in the diagnosis, prognosis, and development of novel strategies to improve the efficacy of therapies for human cancers has been suggested.
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Affiliation(s)
- Ghader Molavi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Molecular Medicine, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nasser Samadi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Molecular Medicine, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Biochemistry, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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MicroRNA-27a controls the intracellular survival of Mycobacterium tuberculosis by regulating calcium-associated autophagy. Nat Commun 2018; 9:4295. [PMID: 30327467 PMCID: PMC6191460 DOI: 10.1038/s41467-018-06836-4] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 09/27/2018] [Indexed: 01/20/2023] Open
Abstract
Tuberculosis (TB) caused by Mycobacterium tuberculosis (Mtb) kills millions every year, and there is urgent need to develop novel anti-TB agents due to the fast-growing of drug-resistant TB. Although autophagy regulates the intracellular survival of Mtb, the role of calcium (Ca2+) signaling in modulating autophagy during Mtb infection remains largely unknown. Here, we show that microRNA miR-27a is abundantly expressed in active TB patients, Mtb-infected mice and macrophages. The target of miR-27a is the ER-located Ca2+ transporter CACNA2D3. Targeting of this transporter leads to the downregulation of Ca2+ signaling, thus inhibiting autophagosome formation and promoting the intracellular survival of Mtb. Mice lacking of miR-27a and mice treated with an antagomir to miR-27a are more resistant to Mtb infection. Our findings reveal a strategy for Mtb to increase intracellular survival by manipulating the Ca2+-associated autophagy, and may also support the development of host-directed anti-TB therapeutic approaches. How Mycobacterium tuberculosis (Mtb) escapes autophagy-mediated clearance is poorly understood. Here, Liu et al. show that Mtb-induced MicroRNA-27a targets the ER-associated calcium transporter CACNA2D3, leading to suppression of antimicrobial autophagy and to enhanced intracellular survival of Mtb.
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35
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The retinal determination gene network: from developmental regulator to cancer therapeutic target. Oncotarget 2018; 7:50755-50765. [PMID: 27203207 PMCID: PMC5226618 DOI: 10.18632/oncotarget.9394] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 04/28/2016] [Indexed: 11/25/2022] Open
Abstract
Although originally identified for its function in Drosophila melanogaster eye specification, the Retinal Determination Gene Network (RDGN) is essential for the development of multiple organs in mammals. The RDGN regulates proliferation, differentiation and autocrine signaling, and interacts with other key signaling pathways. Aberrant expression of RDGN members such as DACH, EYA and SIX contributes to tumor initiation and progression; indeed, the levels of RDGN members are clinically prognostic factors in various cancer types. Stimulation or suppression of the activities of these crucial components can block cancer cell proliferation, prevent cancer stem cell expansion and even reverse the EMT process, thereby attenuating malignant phenotypes. Thus, cancer therapeutic interventions targeting RDGN members should be pursued in future studies.
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Chae D, Ban E, Yoo YS, Kim EE, Baik J, Song EJ. MIR‐27a regulates the TGF‐β signaling pathway by targeting
SMAD2
and
SMAD4
in lung cancer. Mol Carcinog 2017; 56:1992-1998. [DOI: 10.1002/mc.22655] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Accepted: 03/24/2017] [Indexed: 01/12/2023]
Affiliation(s)
- Dong‐Kyu Chae
- Molecular Recognition Research CenterKorea Institute of Science and TechnologySeongbuk‐gu, SeoulSouth Korea
- School of Life Sciences and BiotechnologyKorea UniversitySeoulSouth Korea
| | - Eunmi Ban
- Molecular Recognition Research CenterKorea Institute of Science and TechnologySeongbuk‐gu, SeoulSouth Korea
| | - Young Sook Yoo
- Molecular Recognition Research CenterKorea Institute of Science and TechnologySeongbuk‐gu, SeoulSouth Korea
| | - Eunice EunKyeong Kim
- Biomedical Research InstituteKorea Institute of Science and TechnologySeongbuk‐gu, SeoulSouth Korea
| | - Ja‐Hyun Baik
- School of Life Sciences and BiotechnologyKorea UniversitySeoulSouth Korea
| | - Eun Joo Song
- Molecular Recognition Research CenterKorea Institute of Science and TechnologySeongbuk‐gu, SeoulSouth Korea
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37
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Arginine Methylation by PRMT1 Regulates Muscle Stem Cell Fate. Mol Cell Biol 2017; 37:MCB.00457-16. [PMID: 27849571 PMCID: PMC5247616 DOI: 10.1128/mcb.00457-16] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 11/04/2016] [Indexed: 11/20/2022] Open
Abstract
Quiescent muscle stem cells (MSCs) become activated in response to skeletal muscle injury to initiate regeneration. Activated MSCs proliferate and differentiate to repair damaged fibers or self-renew to maintain the pool and ensure future regeneration. The balance between self-renewal, proliferation, and differentiation is a tightly regulated process controlled by a genetic cascade involving determinant transcription factors such as Pax7, Myf5, MyoD, and MyoG. Recently, there have been several reports about the role of arginine methylation as a requirement for epigenetically mediated control of muscle regeneration. Here we report that the protein arginine methyltransferase 1 (PRMT1) is expressed in MSCs and that conditional ablation of PRMT1 in MSCs using Pax7CreERT2 causes impairment of muscle regeneration. Importantly, PRMT1-deficient MSCs have enhanced cell proliferation after injury but are unable to terminate the myogenic differentiation program, leading to regeneration failure. We identify the coactivator of Six1, Eya1, as a substrate of PRMT1. We show that PRMT1 methylates Eya1 in vitro and that loss of PRMT1 function in vivo prevents Eya1 methylation. Moreover, we observe that PRMT1-deficient MSCs have reduced expression of Eya1/Six1 target MyoD due to disruption of Eya1 recruitment at the MyoD promoter and subsequent Eya1-mediated coactivation. These findings suggest that arginine methylation by PRMT1 regulates muscle stem cell fate through the Eya1/Six1/MyoD axis.
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Maeda R, Tamashiro H, Takano K, Takahashi H, Suzuki H, Saito S, Kojima W, Adachi N, Ura K, Endo T, Tamura TA. TBP-like Protein (TLP) Disrupts the p53-MDM2 Interaction and Induces Long-lasting p53 Activation. J Biol Chem 2017; 292:3201-3212. [PMID: 28082682 DOI: 10.1074/jbc.m116.763318] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 01/08/2017] [Indexed: 11/06/2022] Open
Abstract
Stress-induced activation of p53 is an essential cellular response to prevent aberrant cell proliferation and cancer development. The ubiquitin ligase MDM2 promotes p53 degradation and limits the duration of p53 activation. It remains unclear, however, how p53 persistently escapes MDM2-mediated negative control for making appropriate cell fate decisions. Here we report that TBP-like protein (TLP), a member of the TBP family, is a new regulatory factor for the p53-MDM2 interplay and thus for p53 activation. We found that TLP acts to stabilize p53 protein to ensure long-lasting p53 activation, leading to potentiation of p53-induced apoptosis and senescence after genotoxic stress. Mechanistically, TLP interferes with MDM2 binding and ubiquitination of p53. Moreover, single cell imaging analysis shows that TLP depletion accelerates MDM2-mediated nuclear export of p53. We further show that a cervical cancer-derived TLP mutant has less p53 binding ability and lacks a proliferation-repressive function. Our findings uncover a role of TLP as a competitive MDM2 blocker, proposing a novel mechanism by which p53 escapes the p53-MDM2 negative feedback loop to modulate cell fate decisions.
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Affiliation(s)
- Ryo Maeda
- Department of Biology, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
| | - Hiroyuki Tamashiro
- Department of Biology, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - Kazunori Takano
- Department of Biology, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - Hiro Takahashi
- Graduate School of Horticulture, Chiba University, Chiba 271-8510, Japan
| | - Hidefumi Suzuki
- Department of Biology, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - Shinta Saito
- Graduate School of Nanobioscience, Yokohama City University, Yokohama 236-0027, Japan
| | - Waka Kojima
- Department of Biology, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - Noritaka Adachi
- Graduate School of Nanobioscience, Yokohama City University, Yokohama 236-0027, Japan; Advanced Medical Research Center, Yokohama City University, Yokohama 236-0004, Japan
| | - Kiyoe Ura
- Department of Biology, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - Takeshi Endo
- Department of Biology, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - Taka-Aki Tamura
- Department of Biology, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
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39
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Liu Q, Li A, Tian Y, Liu Y, Li T, Zhang C, Wu JD, Han X, Wu K. The expression profile and clinic significance of the SIX family in non-small cell lung cancer. J Hematol Oncol 2016; 9:119. [PMID: 27821176 PMCID: PMC5100270 DOI: 10.1186/s13045-016-0339-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 10/06/2016] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The SIX family homeobox genes have been demonstrated to be involved in the tumor initiation and progression, but their clinicopathological features and prognostic values in non-small cell lung cancer (NSCLC) have not been well defined. We analyzed relevant datasets and performed a systemic review and a meta-analysis to assess the profile of SIX family members in NSCLC and evaluate their importance as biomarkers for diagnosis and prediction of NSCLC. METHODS This meta-analysis included 17 studies with 2358 patients. Hazard ratio (HR) and 95 % confidence interval (CI) were calculated to represent the prognosis of NSCLC with expression of the SIX family genes. Heterogeneity of the ORs and HRs was assessed and quantified using the Cochrane Q and I 2 test. Begg's rank correlation method and Egger's weighted regression method were used to screen for potential publication bias. Bar graphs of representative datasets were plotted to show the correlation between the SIX expression and clinicopathological features of NSCLC. Kaplan-Meier survival curves were used to validate our prognostic analysis by pooled HR. RESULTS The systematic meta-analysis unveiled that the higher expressions of SIX1-5 were associated with the greater possibility of the tumorigenesis. SIX4 and SIX6 were linked to the lymph node metastasis (LNM). SIX2, SIX3, and SIX4 were correlated with higher TNM stages. Furthermore, the elevated expressions of SIX2, SIX4, and SIX6 predicted poor overall survival (OS) in NSCLC (SIX2: HR = 1.14, 95 % CI, 1.00-1.31; SIX4: HR = 1.39, 95 % CI, 1.16-1.66; SIX6: HR = 1.18, 95 % CI, 1.00-1.38) and poor relapse-free survival (RFS) in lung adenocarcinoma (ADC) (SIX2: HR = 1.42, 95 % CI, 1.14-1.77; SIX4: HR = 1.52, 95 % CI, 1.09-2.11; SIX6: HR = 1.25, 95 % CI, 1.01-1.56). CONCLUSIONS Our report demonstrated that the SIX family members play distinct roles in the tumorigenesis of NSCLC and can be potential biomarkers in predicting prognosis of NSCLC patients.
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Affiliation(s)
- Qian Liu
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Anping Li
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Yijun Tian
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yu Liu
- Department of Geriatric, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Tengfei Li
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Cuntai Zhang
- Department of Geriatric, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jennifer D Wu
- Department of Microbiology and Immunology, Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, USA
| | - Xinwei Han
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
| | - Kongming Wu
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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40
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Cai Q, Wang T, Yang WJ, Fen X. Protective mechanisms of microRNA-27a against oxygen-glucose deprivation-induced injuries in hippocampal neurons. Neural Regen Res 2016; 11:1285-92. [PMID: 27651777 PMCID: PMC5020828 DOI: 10.4103/1673-5374.189194] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Hypoxic injuries during fetal distress have been shown to cause reduced expression of microRNA-27a (miR-27a), which regulates sensitivity of cortical neurons to apoptosis. We hypothesized that miR-27a overexpression attenuates hypoxia- and ischemia-induced neuronal apoptosis by regulating FOXO1, an important transcription factor for regulating the oxidative stress response. miR-27a mimic was transfected into hippocampal neurons to overexpress miR-27a. Results showed increased hippocampal neuronal viability and decreased caspase-3 expression. The luciferase reporter gene system demonstrated that miR-27a directly binded to FOXO1 3'UTR in hippocampal neurons and inhibited FOXO1 expression, suggesting that FOXO1 was the target gene for miR-27a. These findings confirm that miR-27a protects hippocampal neurons against oxygen-glucose deprivation-induced injuries. The mechanism might be mediated by modulation of FOXO1 and apoptosis-related gene caspase-3 expression.
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Affiliation(s)
- Qun Cai
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Ting Wang
- Department of Emergency, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province, China
| | - Wen-Jie Yang
- Medical College of Nantong University, Nantong, Jiangsu Province, China
| | - Xing Fen
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, Jiangsu Province, China
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41
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Suen AA, Jefferson WN, Wood CE, Padilla-Banks E, Bae-Jump VL, Williams CJ. SIX1 Oncoprotein as a Biomarker in a Model of Hormonal Carcinogenesis and in Human Endometrial Cancer. Mol Cancer Res 2016; 14:849-58. [PMID: 27259717 PMCID: PMC5025359 DOI: 10.1158/1541-7786.mcr-16-0084] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 05/16/2016] [Indexed: 11/16/2022]
Abstract
UNLABELLED The oncofetal protein sine oculis-related homeobox 1 (SIX1) is a developmental transcription factor associated with carcinogenesis in several human cancer types but has not been investigated in human endometrial cancer. In a model of hormonal carcinogenesis, mice neonatally exposed to the soy phytoestrogen genistein (GEN) or the synthetic estrogen diethylstilbestrol (DES) develop endometrial cancer as adults. Previously, we demonstrated that SIX1 becomes aberrantly expressed in the uteri of these mice. Here, we used this mouse model to investigate the role of SIX1 expression in endometrial carcinoma development and used human tissue microarrays to explore the utility of SIX1 as a biomarker in human endometrial cancer. In mice neonatally exposed to GEN or DES, the Six1 transcript level increased dramatically over time in uteri at 6, 12, and 18 months of age and was associated with development of endometrial carcinoma. SIX1 protein localized within abnormal basal cells and all atypical hyperplastic and neoplastic lesions. These findings indicate that developmental estrogenic chemical exposure induces persistent endometrial SIX1 expression that is strongly associated with abnormal cell differentiation and cancer development. In human endometrial tissue specimens, SIX1 was not present in normal endometrium but was expressed in a subset of endometrial cancers in patients who were also more likely to have late-stage disease. These findings identify SIX1 as a disease biomarker in a model of hormonal carcinogenesis and suggest that SIX1 plays a role in endometrial cancer development in both mice and women. IMPLICATIONS The SIX1 oncoprotein is aberrantly expressed in the endometrium following developmental exposure to estrogenic chemicals, correlates with uterine cancer, and is a biomarker in human endometrial cancers. Mol Cancer Res; 14(9); 849-58. ©2016 AACR.
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Affiliation(s)
- Alisa A. Suen
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709
- Curriculum in Toxicology, UNC Chapel Hill, Chapel Hill, NC 27599
| | - Wendy N. Jefferson
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709
| | - Charles E. Wood
- Office of Research and Development, U.S. Environmental Protection Agency, RTP, NC 27709
| | - Elizabeth Padilla-Banks
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709
| | - Victoria L. Bae-Jump
- Division of Gynecologic Oncology and Lineberger Comprehensive Cancer Center, UNC Chapel Hill, Chapel Hill, NC 27514
| | - Carmen J. Williams
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709
- Curriculum in Toxicology, UNC Chapel Hill, Chapel Hill, NC 27599
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42
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Post-transcriptional regulation of the tumor suppressor p53 by a novel miR-27a, with implications during hypoxia and tumorigenesis. Biochem J 2016; 473:3597-3610. [PMID: 27531966 DOI: 10.1042/bcj20160359] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 08/15/2016] [Indexed: 12/21/2022]
Abstract
The tumor suppressor protein p53 is intricately regulated by various signaling molecules, including non-coding small RNAs, called microRNAs (miRNAs). The in silico analysis and the inverse expression status in various cell lines raised the possibility of miR-27a being a new regulator of p53. Using luciferase reporter assay and various mutational and functional analysis, we identified two putative binding sites of miR-27a on the 3'-UTR of p53. The overexpression of miR-27a in the human colorectal cancer cell line HCT-116+/+ resulted in the decreased expression of the endogenous p53 protein levels. During hypoxia of the HCT-116+/+ cells, p53 showed increased accumulation after 3 h, and the levels were significantly up-regulated until 24 h of hypoxia. The p53 expression dynamics during hypoxia of the HCT-116+/+ cells were found to be inversely regulated by miR-27a expression. Moreover, using a cell viability assay, we established that after 3 h of hypoxia, the accumulation of p53 results in a decreased number of the viable HCT-116+/+ cells and the overexpression of miR-27a resulted in an increased number of viable HCT-116+/+ cells with a concomitant decrease in p53 expression. Additionally, our data indicated that miR-27a and p53 depict inverse expression dynamics in 50% of the human colorectal cancer samples studied, when compared with that in the adjacent normal samples. Our data established that miR-27a and the tumor suppressor protein p53 are part of the same signaling network that has important implications during hypoxia and tumorigenesis.
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Chen X, Li Y, Chen W, Nong Z, Huang J, Chen C. Protective Effect of Hyperbaric Oxygen on Cognitive Impairment Induced by D-Galactose in Mice. Neurochem Res 2016; 41:3032-3041. [PMID: 27485714 DOI: 10.1007/s11064-016-2022-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 07/22/2016] [Accepted: 07/28/2016] [Indexed: 12/30/2022]
Abstract
Memory decline is characteristic of aging and age-related neurodegenerative disorders. This study was designed to investigate the protective effect of hyperbaric oxygen (HBO) against cognitive impairment induced by D-galactose (D-gal) in mice. D-gal was intraperitoneally injected into mice daily for 8 weeks to establish the aging model. HBO was simultaneously administered once daily. The results indicate that HBO significantly reversed D-gal-induced learning and memory impairments. Studies on the potential mechanisms of this action showed that HBO significantly reduced oxidative stress by increasing superoxide dismutase, glutathione peroxidase, and catalase levels, as well as the total anti-oxidation capability, while decreasing the content of malondialdehyde, nitric oxide, and nitric oxide synthase in the hippocampal CA1 region. HBO also inhibited advanced glycation end-product formation and decreased levels of tumor necrosis factor-α and interleukin-6. Moreover, HBO significantly attenuated D-gal-induced pathological injury in the hippocampus, as well as β-amyloid protein1-42 expression and retained BDNF expression. Furthermore, HBO decreased p16, p21 and p53 gene and protein expression in the hippocampus of D-gal-treated mice. In conclusion, the protective effect of HBO against D-gal-induced cognitive impairment was mainly due to its ability to reduce oxidative damage, suppress inflammatory responses, and regulate aging-related gene expression.
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Affiliation(s)
- Xiaoyu Chen
- Department of Pharmacology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, 530021, China
| | - Yaoxuan Li
- Department of Neurology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, 530021, China
| | - Wan Chen
- Department of Emergency, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, 530021, China
| | - Zhihuan Nong
- Department of Pharmacology, Guangxi Institute of Chinese Medicine and Pharmaceutical Science, Nanning, 530022, China
| | - Jianping Huang
- Department of Hyperbaric oxygen, The People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Nanning, Guangxi, 530021, China
| | - Chunxia Chen
- Department of Hyperbaric oxygen, The People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Nanning, Guangxi, 530021, China.
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Towers CG, Ford HL. A tale of two ends. Cell Cycle 2016; 15:1523-4. [PMID: 27101085 DOI: 10.1080/15384101.2016.1171652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- Christina G Towers
- a Department of Pharmacology , University of Colorado, Denver, Anschutz Medical Campus , Aurora , CO , USA
| | - Heide L Ford
- a Department of Pharmacology , University of Colorado, Denver, Anschutz Medical Campus , Aurora , CO , USA
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