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Zou J, Kuang W, Hu J, Rao H. miR-216b promotes cell growth and enhances chemosensitivity of colorectal cancer by suppressing PDZ-binding kinase. Biochem Biophys Res Commun 2017; 488:247-252. [PMID: 28373071 DOI: 10.1016/j.bbrc.2017.03.162] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 03/30/2017] [Indexed: 12/27/2022]
Abstract
PDZ-binding kinase (PBK/TOPK) acts as oncogene in various cancers and correlates with drug response. However, few studies have examined the expression and roles of PBK in colonrectal cancer (CRC). In this study, we found a significant increase in the expression of PBK in CRC tissues and cell lines. While overexpression of PBK promoted cell growth and decreased the toxicity effect of oxaliplation (OXA), targeting PBK with short hairpin RNA (shRNA) or novel PBK inhibitor HI-TOPK-032 effectively suppressed tumor growth and potentiated chemosensitivity in vitro and in vivo. Furthermore, there was a significant inverse correlation between the expressions of miR-216b and PBK. Further found that miR-216b could down-regulate PBK levels by binding to the 3' untranslated region (3'UTR) of PBK. Notably, while miR-216b decreased cell proliferation and enhanced sensitivity of CRC cells to oxaliplation, re-expression of PBK dramatically reversed these events. Collectively, our data indicated that miR-216b may function as a tumor suppressor though regulating PBK expression, which provided promising targets and possible therapeutic strategies for CRC treatment.
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Affiliation(s)
- Jun Zou
- Department of Abdominal Surgery, Jiangxi Tumor Hospital, NanChang 330029, China
| | - Weihua Kuang
- Department of Abdominal Surgery, Jiangxi Tumor Hospital, NanChang 330029, China
| | - Jilong Hu
- Department of Abdominal Surgery, Jiangxi Tumor Hospital, NanChang 330029, China
| | - Huamin Rao
- Department of Abdominal Surgery, Jiangxi Tumor Hospital, NanChang 330029, China.
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52
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Liu Y, Niu Z, Lin X, Tian Y. MiR-216b increases cisplatin sensitivity in ovarian cancer cells by targeting PARP1. Cancer Gene Ther 2017; 24:208-214. [PMID: 28281524 DOI: 10.1038/cgt.2017.6] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Revised: 01/16/2017] [Accepted: 01/21/2017] [Indexed: 01/07/2023]
Abstract
Cisplatin resistance hinders the efficacy of chemotherapy in ovarian cancer. MicroRNAs (miRs) have been implicated in drug resistance in anti-cancer chemotherapy. We compared the expression profiles of miRs between cisplatin-resistant and cisplatin-sensitive ovarian cancer cells, and found that miR-216b was significantly downregulated in cisplatin-resistant ovarian cancer cells. To investigate its molecular mechanism, we performed cell viability and apoptosis assays in cisplatin-resistant ovarian cells, and found that miR-216b reduced cell viability and promoted apoptosis. Although 4 potential targets were obtained through bioinformatics, only the mRNA level of poly(ADP-ribose) polymerase (PARP)-1 was significantly regulated by miR-216b. Disruption of the complementary binding sequence of miR-216b on the 3'-untranslated region (3'-UTR) of the PARP1 led to the loss of miR-216b targeting. Spearman's correlation coefficient of the levels of miR-216b and PARP1 mRNA from 51 human ovarian cancer specimens also showed a significantly negative correlation between them. Importantly, the improved cisplatin sensitivity induced by miR-216b was markedly reversed by PARP1 overexpression. Tumor formation assay in nude mice further provided an evidence on the suppressive role of miR-216b in tumor growth. Taken together, this study demonstrated that a new miRNA, miR-216b, was involved in cisplatin resistance in ovarian cancer, which could be regarded as a potential sensitizer in cisplatin chemotherapy.
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Affiliation(s)
- Y Liu
- Department of Obstetrics and Gynecology, Provincial Hospital Affiliated to Shandong University, Jinan, China.,Department of Obstetrics and Gynecology, Liaocheng people's Hospital, Liaocheng, China
| | - Z Niu
- Department of Obstetrics and Gynecology, Liaocheng people's Hospital, Liaocheng, China
| | - X Lin
- Department of Obstetrics and Gynecology, Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Y Tian
- Department of Obstetrics and Gynecology, Provincial Hospital Affiliated to Shandong University, Jinan, China
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53
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Rodrigues CE, Capcha JMC, de Bragança AC, Sanches TR, Gouveia PQ, de Oliveira PAF, Malheiros DMAC, Volpini RA, Santinho MAR, Santana BAA, Calado RDT, Noronha IDL, Andrade L. Human umbilical cord-derived mesenchymal stromal cells protect against premature renal senescence resulting from oxidative stress in rats with acute kidney injury. Stem Cell Res Ther 2017; 8:19. [PMID: 28129785 PMCID: PMC5273809 DOI: 10.1186/s13287-017-0475-8] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 12/08/2016] [Accepted: 01/07/2017] [Indexed: 02/08/2023] Open
Abstract
Background Mesenchymal stromal cells (MSCs) represent an option for the treatment of acute kidney injury (AKI). It is known that young stem cells are better than are aged stem cells at reducing the incidence of the senescent phenotype in the kidneys. The objective of this study was to determine whether AKI leads to premature, stress-induced senescence, as well as whether human umbilical cord-derived MSCs (huMSCs) can prevent ischaemia/reperfusion injury (IRI)-induced renal senescence in rats. Methods By clamping both renal arteries for 45 min, we induced IRI in male rats. Six hours later, some rats received 1 × 106 huMSCs or human adipose-derived MSCs (aMSCs) intraperitoneally. Rats were euthanised and studied on post-IRI days 2, 7 and 49. Results On post-IRI day 2, the kidneys of huMSC-treated rats showed improved glomerular filtration, better tubular function and higher expression of aquaporin 2, as well as less macrophage infiltration. Senescence-related proteins (β-galactosidase, p21Waf1/Cip1, p16INK4a and transforming growth factor beta 1) and microRNAs (miR-29a and miR-34a) were overexpressed after IRI and subsequently downregulated by the treatment. The IRI-induced pro-oxidative state and reduction in Klotho expression were both reversed by the treatment. In comparison with huMSC treatment, the treatment with aMSCs improved renal function to a lesser degree, as well as resulting in a less pronounced increase in the renal expression of Klotho and manganese superoxide dismutase. Treatment with huMSCs ameliorated long-term kidney function after IRI, minimised renal fibrosis, decreased β-galactosidase expression and increased the expression of Klotho. Conclusions Our data demonstrate that huMSCs attenuate the inflammatory and oxidative stress responses occurring in AKI, as well as reducing the expression of senescence-related proteins and microRNAs. Our findings broaden perspectives for the treatment of AKI. Electronic supplementary material The online version of this article (doi:10.1186/s13287-017-0475-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Camila Eleuterio Rodrigues
- Division of Nephrology, University of São Paulo School of Medicine, Av. Dr. Arnaldo, 455, 01246-903, São Paulo, Brazil.
| | - José Manuel Condor Capcha
- Division of Nephrology, University of São Paulo School of Medicine, Av. Dr. Arnaldo, 455, 01246-903, São Paulo, Brazil
| | - Ana Carolina de Bragança
- Division of Nephrology, University of São Paulo School of Medicine, Av. Dr. Arnaldo, 455, 01246-903, São Paulo, Brazil
| | - Talita Rojas Sanches
- Division of Nephrology, University of São Paulo School of Medicine, Av. Dr. Arnaldo, 455, 01246-903, São Paulo, Brazil
| | - Priscila Queiroz Gouveia
- Division of Nephrology, University of São Paulo School of Medicine, Av. Dr. Arnaldo, 455, 01246-903, São Paulo, Brazil
| | | | | | - Rildo Aparecido Volpini
- Division of Nephrology, University of São Paulo School of Medicine, Av. Dr. Arnaldo, 455, 01246-903, São Paulo, Brazil
| | | | - Bárbara Amélia Aparecida Santana
- Department of Internal Medicine, Division of Haematology, University of São Paulo at Ribeirão Preto School of Medicine, Av. Bandeirantes, 3900, 14049-900, Ribeirão Preto, Brazil
| | - Rodrigo do Tocantins Calado
- Department of Internal Medicine, Division of Haematology, University of São Paulo at Ribeirão Preto School of Medicine, Av. Bandeirantes, 3900, 14049-900, Ribeirão Preto, Brazil
| | - Irene de Lourdes Noronha
- Division of Nephrology, University of São Paulo School of Medicine, Av. Dr. Arnaldo, 455, 01246-903, São Paulo, Brazil
| | - Lúcia Andrade
- Division of Nephrology, University of São Paulo School of Medicine, Av. Dr. Arnaldo, 455, 01246-903, São Paulo, Brazil
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54
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Liu C, Wang J, Hu Y, Xie H, Liu M, Tang H. Upregulation of kazrin F by miR-186 suppresses apoptosis but promotes epithelial-mesenchymal transition to contribute to malignancy in human cervical cancer cells. Chin J Cancer Res 2017; 29:45-56. [PMID: 28373753 PMCID: PMC5348475 DOI: 10.21147/j.issn.1000-9604.2017.01.06] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Objective Previous studies have identified that kazrin is a constituent of desmosome and influences intercellular adhesion, growing development and morphology. We previously cloned another new isoform, kazrin F and found that it has anti-apoptotic effects on human glioma cell line. To further explore whether kazrin F is involved in tumorigenesis, we investigated its expression and role in cervical cancer (CC) cells. Methods The role of kazrin F and miR-186 in CC was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, colony formation, transwell, and apoptosis assays. Using enhanced green fluorescent protein (EGFP) reporter assays, reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and western blot analysis, we identified kazrin F post-transcriptional regulation by miR-186. Results We demonstrate that kazrin F is highly expressed in CC tissues compared with the adjacent noncancerous tissues and promotes cell proliferation, colony formation, migration and invasion in HeLa and C33A cells by suppressing apoptosis and facilitating epithelial-to-mesenchymal transition (EMT). Furthermore, miR-186 was confirmed as a regulator of kazrin F dysregulation. An EGFP reporter assay proved that miR-186 directly targets the 3’-untranslated region (3’UTR) of kazrin F and downregulates its expression, and miR-186 expression showed an inverse correlation with kazrin F levels in CC tissues. In addition, overexpression of miR-186 suppressed the malignant behaviors of CC cells. The ectopic expression of kazrin F rescued the inhibitory effects of miR-186. Conclusions Our findings indicate that the upregulation of kazrin F due to downregulated miR-186 levels contributes to malignancy, and highlight the significance of kazrin F in CC tumorigenesis.
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Affiliation(s)
- Chang Liu
- Tianjin Life Science Research Center and Department of Pathogen, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Jinghua Wang
- Tianjin Life Science Research Center and Department of Pathogen, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Yang Hu
- Tianjin Life Science Research Center and Department of Pathogen, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Hong Xie
- Tianjin Life Science Research Center and Department of Pathogen, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Min Liu
- Tianjin Life Science Research Center and Department of Pathogen, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Hua Tang
- Tianjin Life Science Research Center and Department of Pathogen, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
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55
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Flores-Pérez A, Marchat LA, Rodríguez-Cuevas S, Bautista-Piña V, Hidalgo-Miranda A, Ocampo EA, Martínez MS, Palma-Flores C, Fonseca-Sánchez MA, Astudillo-de la Vega H, Ruíz-García E, González-Barrios JA, Pérez-Plasencia C, Streber ML, López-Camarillo C. Dual targeting of ANGPT1 and TGFBR2 genes by miR-204 controls angiogenesis in breast cancer. Sci Rep 2016; 6:34504. [PMID: 27703260 PMCID: PMC5050489 DOI: 10.1038/srep34504] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 09/15/2016] [Indexed: 12/22/2022] Open
Abstract
Deregulated expression of microRNAs has been associated with angiogenesis. Studying the miRNome of locally advanced breast tumors we unsuspectedly found a dramatically repression of miR-204, a small non-coding RNA with no previous involvement in tumor angiogenesis. Downregulation of miR-204 was confirmed in an independent cohort of patients and breast cancer cell lines. Gain-of-function analysis indicates that ectopic expression of miR-204 impairs cell proliferation, anchorage-independent growth, migration, invasion, and the formation of 3D capillary networks in vitro. Likewise, in vivo vascularization and angiogenesis were suppressed by miR-204 in a nu/nu mice model. Genome-wide profiling of MDA-MB-231 cells expressing miR-204 revealed changes in the expression of hundred cancer-related genes. Of these, we focused on the study of pro-angiogenic ANGPT1 and TGFβR2. Functional analysis using luciferase reporter and rescue assays confirmed that ANGPT1 and TGFβR2 are novel effectors downstream of miR-204. Accordingly, an inverse correlation between miR-204 and ANGPT1/TGFβR2 expression was found in breast tumors. Knockdown of TGFβR2, but not ANGPT1, impairs cell proliferation and migration whereas inhibition of both genes inhibits angiogenesis. Taken altogether, our findings reveal a novel role for miR-204/ANGPT1/TGFβR2 axis in tumor angiogenesis. We propose that therapeutic manipulation of miR-204 levels may represent a promising approach in breast cancer.
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Affiliation(s)
- Ali Flores-Pérez
- Posgrado en Ciencias Genómicas, Universidad Autónoma de la Ciudad de México, Ciudad de México, México
| | - Laurence A Marchat
- Programa en Biomedicina Molecular y Red de Biotecnología, Escuela Nacional de Medicina y Homeopatía, Instituto Politécnico Nacional, Ciudad de México, México
| | | | | | | | - Elena Aréchaga Ocampo
- Departamento de Ciencias Naturales, Universidad Autónoma Metropolitana, Ciudad de México, México
| | - Mónica Sierra Martínez
- Laboratorio de Genética y Diagnóstico Molecular, Hospital Juárez, Ciudad de México, México
| | - Carlos Palma-Flores
- Posgrado en Ciencias Genómicas, Universidad Autónoma de la Ciudad de México, Ciudad de México, México
| | - Miguel A Fonseca-Sánchez
- Departamento de Genética Humana, Hospital General de Mexico "Dr Eduardo Liceaga", Ciudad de México, México
| | - Horacio Astudillo-de la Vega
- Laboratorio de Investigación en Cáncer Translacional y Terapia Celular, Centro Médico Siglo XXI, Ciudad de México, México
| | - Erika Ruíz-García
- Laboratorio de Medicina Translacional, Instituto Nacional de Cancerología, Ciudad de México, México
| | | | - Carlos Pérez-Plasencia
- Laboratorio de Genómica, Instituto Nacional de Cancerología, Ciudad de México, México; Universidad Nacional Autónoma de México UNAM, FES-Iztacala, UBIMED, Tlalnepantla, Estado de México, México
| | - María L Streber
- Laboratorio de Investigación Experimental y Animal. Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México
| | - César López-Camarillo
- Posgrado en Ciencias Genómicas, Universidad Autónoma de la Ciudad de México, Ciudad de México, México
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56
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Jana S, Sengupta S, Biswas S, Chatterjee A, Roy H, Bhattacharyya A. miR-216b suppresses breast cancer growth and metastasis by targeting SDCBP. Biochem Biophys Res Commun 2016; 482:126-133. [PMID: 27720715 DOI: 10.1016/j.bbrc.2016.10.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 10/02/2016] [Indexed: 12/26/2022]
Abstract
Breast cancer is the most deadly cancer among women and the second leading cause of cancer death worldwide. Treatment effectiveness is complicated with tumor invasiveness/drug resistance. To tailor treatments more effectively to individual patients, it is important to define tumor growth and metastasis at molecular levels. SDCBP is highly overexpressed and associated with a strikingly poor prognosis in breast cancer. However the post transcriptional regulation of SDCBP overexpression remains to be an unexplored area. Our study reveals that miR-216b directly regulates SDCBP expression by binding to its 3'UTR region. miR-216b is a tumor suppressive miRNA and it is underexpressed during metastatic breast cancer. Consequently, overexpression of miR-216b resulted in decreased proliferation, migration and invasion in BC cell lines by modulating the expression of SDCBP. Inhibition of miR-216b divergent the tumor suppressive role by inducing the growth proliferation, migration and invasion in vitro. There is therefore a negative correlation between the expression of miR-216b and its target gene SDCBP in the BC tissue samples as well as cell lines. Simultaneous expression of miR-216b and SDCBP rescued the growth, migration and invasion effect suggesting that tumor suppressive action of miR-216b may be directly mediated by SDCBP. In summary, the study identifies miR-216b as a regulator of SDCBP expression in breast cancer which can potentially be targeted for developing newer therapies for the effective treatment of this killer disease.
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Affiliation(s)
- Samir Jana
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35. B.C.Road, Kolkata, 700019, India
| | - Suman Sengupta
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35. B.C.Road, Kolkata, 700019, India
| | - Subir Biswas
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35. B.C.Road, Kolkata, 700019, India
| | - Annesha Chatterjee
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35. B.C.Road, Kolkata, 700019, India
| | - Himansu Roy
- Department of Surgery, Medical College, Kolkata, India
| | - Arindam Bhattacharyya
- Immunology Laboratory, Department of Zoology, University of Calcutta, 35. B.C.Road, Kolkata, 700019, India.
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Xiang X, Mei H, Zhao X, Pu J, Li D, Qu H, Jiao W, Zhao J, Huang K, Zheng L, Tong Q. miRNA-337-3p suppresses neuroblastoma progression by repressing the transcription of matrix metalloproteinase 14. Oncotarget 2016; 6:22452-66. [PMID: 26084291 PMCID: PMC4673175 DOI: 10.18632/oncotarget.4311] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 06/03/2015] [Indexed: 02/06/2023] Open
Abstract
Recent evidence shows the emerging roles of endogenous microRNAs (miRNAs) in repressing gene transcription. However, the miRNAs inhibiting the transcription of matrix metalloproteinase 14 (MMP-14), a membrane-anchored MMP crucial for the tumorigenesis and aggressiveness, still remain largely unknown. In this study, through mining computational algorithm program and genome-wide Argonaute profiling dataset, we identified one binding site of miRNA-337-3p (miR-337-3p) within the MMP-14 promoter. We demonstrated that miR-337-3p was under-expressed and inversely correlated with MMP-14 expression in clinical specimens and cell lines of neuroblastoma (NB), the most common extracranial solid tumor in childhood. Patients with high miR-337-3p expression had greater survival probability. miR-337-3p suppressed the promoter activity, nascent transcription, and expression of MMP-14, resulting in decreased levels of vascular endothelial growth factor, in cultured NB cell lines. Mechanistically, miR-337-3p recognized its binding site and recruited Argonaute 2 to facilitate the enrichment of repressive epigenetic markers and decrease the binding of RNA polymerase II and specificity protein 1 on the MMP-14 promoter. Gain- and loss-of-function studies demonstrated that miR-337-3p suppressed the growth, invasion, metastasis, and angiogenesis of NB cells in vitro and in vivo. In addition, restoration of MMP-14 expression rescued the NB cells from changes in these biological features. Taken together, these data indicate that miR-337-3p directly binds the MMP-14 promoter to repress its transcription, thus suppressing the progression of NB.
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Affiliation(s)
- Xuan Xiang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Hong Mei
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Xiang Zhao
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Jiarui Pu
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Dan Li
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Hongxia Qu
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Wanju Jiao
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Jihe Zhao
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Kai Huang
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Liduan Zheng
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China.,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
| | - Qiangsong Tong
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China.,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P. R. China
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Qiu H, Yuan S, Lu X. miR-186 suppressed CYLD expression and promoted cell proliferation in human melanoma. Oncol Lett 2016; 12:2301-2306. [PMID: 27698793 PMCID: PMC5038478 DOI: 10.3892/ol.2016.5002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Accepted: 02/11/2016] [Indexed: 01/08/2023] Open
Abstract
Previous studies have shown that microRNA-186 (miR-186) is overexpressed in various human cancers and is associated with the regulation of the carcinogenic processes. However, the underlying mechanisms of this microRNA in melanoma remain largely unknown. In the present study, the overexpression of miR-186 was identified in melanoma tissues and melanoma cells compared to the expression of miR-186 in the matched tumor adjacent tissues and normal human epidermal melanocytes. Overexpression of miR-186 promoted the proliferation and anchorage-independent growth of melanoma cells, whereas inhibition of miR-186 reduced this effect. Bioinformatics analysis also revealed cylindromatosis (CYLD), a putative tumor suppressor, to be a potential target of miR-186. Luciferase reporter assays showed that miR-186 directly targeted the 3′-untranslated regions of CYLD messenger RNA. Additional experiments showed that overexpression of miR-186 promoted the proliferation of melanoma cells, which was consistent with the inhibitory effects induced by knockdown of CYLD. In summary, the present study indicated that miRNA-186 plays a crucial role in melanoma growth and its oncogenic effect is mediated chiefly through the direct suppression of CYLD expression.
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Affiliation(s)
- Haijiang Qiu
- Department of Ophthalmology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510180, P.R. China
| | - Suirong Yuan
- Department of Ophthalmology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510180, P.R. China
| | - Xiaohe Lu
- Department of Ophthalmology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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59
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CRNDE affects the malignant biological characteristics of human glioma stem cells by negatively regulating miR-186. Oncotarget 2016; 6:25339-55. [PMID: 26231038 PMCID: PMC4694835 DOI: 10.18632/oncotarget.4509] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 07/02/2015] [Indexed: 01/18/2023] Open
Abstract
The long non-coding RNA Colorectal neoplasia differentially expressed (CRNDE) is a novel gene that activated early in colorectal neoplasia, but it is also up-regulated in many other solid tumors. Herein, the function and underlying mechanism of CRNDE in regulating glioma stem cells (GSCs) were investigated. We found that CRNDE expression was up-regulated while miR-186 expression was down-regulated in GSCs. Overexpression of CRNDE could promote the cellular proliferation, migration, invasion and inhibit the apoptosis in GSCs. Overexpression of miR-186 exerted functions of inhibiting the proliferation, migration and invasion of GSCs and promoting apoptosis. And CRNDE decreased the expression levels of XIAP and PAK7 by binding to miR-186 and negatively regulating it. In addition, miR-186 binded to XIAP and PAK7 3′UTR region, and decrease the expression of them, thus regulating the expression levels of downstream target proteins such as caspase 3, BAD, cyclin D1 and MARK2. The in vivo effect of CRNDE and miR-186 showed that the tumor formation rate was minimum in tumor-bearing nude mice with the knockdown of CRNDE and the overexpression of miR-186. In conclusion, CRNDE played an oncogenic role of GSCs through the negative regulation of miR-186. Both CRNDE and miR-186 could be regarded as potential targets in the glioma therapy.
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60
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Guo Y, An R, Zhao R, Sun Y, Liu M, Tian L. miR-375 exhibits a more effective tumor-suppressor function in laryngeal squamous carcinoma cells by regulating KLF4 expression compared with simple co-transfection of miR-375 and miR-206. Oncol Rep 2016; 36:952-60. [PMID: 27279635 DOI: 10.3892/or.2016.4852] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 02/26/2016] [Indexed: 11/06/2022] Open
Abstract
MicroRNAs (miRNAs) are reported to be important regulators of cancer-related processes, and function either as oncogenes or as tumor-suppressor genes. It was found that miR-375 was downregulated in samples of laryngeal squamous cell carcinomas (LSCCs) as compared to the level noted in adjacent non-tumor tissues, and it was inversely correlated with T grade, lymph node metastases and clinical tumor stage. Overexpression of miR-375 led to a decreased protein level of Krüppel-like factor 4 (KLF4) and marked suppression of the proliferation and invasion, and induced apoptosis of LSCC cell line Hep-2 using Cell Counting Kit-8, Transwell chamber and cell cycle assays. In addition, we examined the influence of the upregulation of miR-206 alone and upregulation of both miR-375 and miR-206 on the expression of KLF4 and Hep-2 cell behavior. The results showed that compared with the function of miR-375 in tumor suppression by regulating KLF4, co-transfection of miR-375 and miR-206 exhibited a less effective inhibitory effect not only on tumor cell proliferation and invasion, but also on tumor cell apoptosis. Taken together, miR-375 is possibly a tumor suppressor in LSCC by regulating KLF4. In addition, simple overexpression of several miRNAs did not entail higher efficacy than a single miRNA, similar to co-transfecions of miR-375 and miR-206.
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Affiliation(s)
- Yan Guo
- Service of Head and Neck Surgery, Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Ran An
- Service of Head and Neck Surgery, Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Rui Zhao
- Service of Laryngology, Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Yanan Sun
- Service of Head and Neck Surgery, Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Ming Liu
- Service of Head and Neck Surgery, Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Linli Tian
- Service of Head and Neck Surgery, Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
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Xu Z, Bu Y, Chitnis N, Koumenis C, Fuchs SY, Diehl JA. miR-216b regulation of c-Jun mediates GADD153/CHOP-dependent apoptosis. Nat Commun 2016; 7:11422. [PMID: 27173017 PMCID: PMC4869177 DOI: 10.1038/ncomms11422] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 03/24/2016] [Indexed: 01/04/2023] Open
Abstract
The ability of the unfolded protein response, UPR, to regulate cell homeostasis through both gene expression and protein synthesis has been well documented. One primary pro-apoptotic protein that responds to both PERK and Ire1 signalling is the CHOP/GADD153 transcription factor. Although CHOP deficiency delays onset of cell death, questions remain regarding how CHOP regulates apoptosis. Here, we provide evidence demonstrating that CHOP/GADD153-dependent apoptosis reflects expression of micro-RNA, miR-216b. MiR-216b accumulation requires PERK-dependent induction of CHOP/GADD153, which then directly regulates miR-216b expression. As maximal expression of miR-216b is antagonized by Ire1, miR-216b accumulation reflects the convergence of PERK and Ire1 activities. Functionally, miR-216b directly targets c-Jun, thereby reducing AP-1-dependent transcription and sensitizing cells to ER stress-dependent apoptosis. These results provide direct insight into the molecular mechanisms of CHOP/GADD153-dependent cell death. The transcription factor CHOP/GADD153 regulates apoptosis in response to the unfolded protein response. Here the authors show that CHOP/GADD153 regulates the expression of miR-216b, which targets c-Jun and sensitizes cells to ER stress-dependent apoptosis.
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Affiliation(s)
- Zhenhua Xu
- Department of Biochemistry, Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, 3400, Charleston, South Carolina 29425, USA
| | - Yiwen Bu
- Department of Biochemistry, Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, 3400, Charleston, South Carolina 29425, USA
| | - Nilesh Chitnis
- Department of Biochemistry, Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, 3400, Charleston, South Carolina 29425, USA
| | - Costas Koumenis
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Serge Y Fuchs
- Department of Animal Biology, School of Veterinary Medicine, 380 S. University Avenue, Philadelphia, Pennsylvania 19104, USA
| | - J Alan Diehl
- Department of Biochemistry, Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas Street, 3400, Charleston, South Carolina 29425, USA
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62
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Ben Halima S, Siegel G, Rajendran L. miR-186 in Alzheimer's disease: a big hope for a small RNA? J Neurochem 2016; 137:308-11. [DOI: 10.1111/jnc.13573] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 02/09/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Saoussen Ben Halima
- Systems and Cell Biology of Neurodegeneration; University of Zurich, Switzerland; Schlieren Switzerland
| | - Gabriele Siegel
- Systems and Cell Biology of Neurodegeneration; University of Zurich, Switzerland; Schlieren Switzerland
| | - Lawrence Rajendran
- Systems and Cell Biology of Neurodegeneration; University of Zurich, Switzerland; Schlieren Switzerland
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63
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Alteration of Pituitary Tumor Transforming Gene-1 Regulates Trophoblast Invasion via the Integrin/Rho-Family Signaling Pathway. PLoS One 2016; 11:e0149371. [PMID: 26900962 PMCID: PMC4764760 DOI: 10.1371/journal.pone.0149371] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 02/01/2016] [Indexed: 11/23/2022] Open
Abstract
Trophoblast invasion ability is an important factor in early implantation and placental development. Recently, pituitary tumor transforming gene 1 (PTTG1) was shown to be involved in invasion and proliferation of cancer. However, the role of PTTG1 in trophoblast invasion remains unknown. Thus, in this study we analyzed PTTG1 expression in trophoblasts and its effect on trophoblast invasion activity and determined the mechanism through which PTTG1 regulates trophoblast invasion. Trophoblast proliferation and invasion abilities, regardless of PTTG1 expression, were analyzed by quantitative real-time polymerase chain reaction, fluorescence-activated cell sorting analysis, invasion assay, western blot, and zymography after treatment with small interfering RNA against PTTG1 (siPTTG1). Additionally, integrin/Rho-family signaling in trophoblasts by PTTG1 alteration was analyzed. Furthermore, the effect of PTTG1 on trophoblast invasion was evaluated by microRNA (miRNA) mimic and inhibitor treatment. Trophoblast invasion was significantly reduced through decreased matrix metalloproteinase (MMP)-2 and MMP-9 expression when PTTG1 expression was inhibited by siPTTG1 (p < 0.05). Furthermore, knockdown of PTTG1 increased expression of integrin alpha 4 (ITGA4), ITGA5, and integrin beta 1 (ITGB1); otherwise, RhoA expression was significantly decreased (p < 0.05). Treatment of miRNA-186-5p mimic and inhibitor controlled trophoblast invasion ability by altering PTTG1 and MMP expression. PTTG1 can control trophoblast invasion ability via regulation of MMP expression through integrin/Rho-family signaling. In addition, PTTG1 expression and its function were regulated by miRNA-186-5p. These results help in understanding the mechanism through which PTTG1 regulates trophoblast invasion and thereby implantation and placental development.
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64
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Predictive Value of Plasma MicroRNA-216a/b in the Diagnosis of Esophageal Squamous Cell Carcinoma. DISEASE MARKERS 2016; 2016:1857067. [PMID: 26989293 PMCID: PMC4775814 DOI: 10.1155/2016/1857067] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Accepted: 01/20/2016] [Indexed: 12/23/2022]
Abstract
Esophageal squamous cell carcinoma (ESCC) is a common human malignancy with poor survival, which was usually diagnosed at an advanced stage. MicroRNAs (miRNAs), a class of single stranded noncoding RNAs with only 17–25 ribonucleotides, were demonstrated to play an important role in lots of cancers. In the recent years, increasing evidence revealed that circulating miRNAs exhibited great potential in the diagnosis of various types of cancers. The present study was designed to evaluate the diagnostic value of plasma miRNA-216a/b for ESCC. Our results showed that the expression level of plasma miRNA-216a/b was significantly lower in ESCC patients compared with that of healthy controls. The receiver operating characteristic (ROC) curve analysis yielded an area under the ROC curve (AUC) value of 0.877 [95% CI (confidence interval): 0.818–0.922] for miRNA-216a and 0.756 (95% CI: 0.685–0.819) for miRNA-216b. Clinical data indicated that plasma miRNA-216a/b were inversely correlated with lymph node metastasis and TNM stage. Additionally, the plasma miRNA-216b expression level was significantly upregulated in postoperative samples compared to preoperative samples. Our study, for the first time, demonstrated that plasma miRNA-216a/b might serve as potential biomarkers for the diagnosis of ESCC and dysregulation of miRNA-216a/b might be involved in the progression of ESCC.
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65
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Autophagy regulates resistance of non-small cell lung cancer cells to paclitaxel. Tumour Biol 2016; 37:10539-44. [PMID: 26852748 DOI: 10.1007/s13277-016-4929-x] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 01/28/2016] [Indexed: 10/22/2022] Open
Abstract
Paclitaxel is a chemotherapeutic drug that is effective for treating non-small cell lung cancer (NSCLC). However, some NSCLCs are not sensitive to paclitaxel treatment with undetermined underlying molecular mechanisms. In this study, we found that paclitaxel dose-dependently activated Beclin-1 in 2 NSCLC cell lines, A549 and Calu-3. Inhibition of autophagy significantly increased the paclitaxel-induced NSCLC cell death in a cell counting kit-8 (CCK-8) assay. Moreover, microRNA (miR)-216b levels were significantly downregulated in paclitaxel-treated NSCLC cells. Bioinformatics study showed that miR-216b targeted the 3'-UTR of Beclin-1 mRNA to inhibit its translation, which was confirmed by luciferase reporter assay. Together, these data suggest that paclitaxel may decrease miR-216b levels in NSCLC cells, which subsequently upregulates Beclin-1 to increase NSCLC cell autophagy to antagonize paclitaxel-induced cell death. Strategies that increase miR-216b levels or inhibit cell autophagy may improve the outcome of paclitaxel treatment in NSCLC therapy.
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66
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Liu Z, Zhang G, Yu W, Gao N, Peng J. miR-186 inhibits cell proliferation in multiple myeloma by repressing Jagged1. Biochem Biophys Res Commun 2015; 469:692-7. [PMID: 26679605 DOI: 10.1016/j.bbrc.2015.11.136] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 11/30/2015] [Indexed: 01/09/2023]
Abstract
MicroRNAs (miRNAs) are small, noncoding ribonucleic acids that regulate gene expression by targeting mRNAs for translational repression and degradation. Accumulating experimental evidence supports a causal role of miRNAs in hematology tumorigenesis. However, the specific functions of miRNAs in the pathogenesis of multiple myeloma (MM) remain to be established. In this study, we demonstrated that miR-186 is commonly downregulated in MM cell lines and patient MM cells. Ectopic expression of miR-186 significantly inhibited cell growth, both in vitro and in vivo, and induced cell cycle G0/G1 arrest. Furthermore, miR-186 induced downregulation of Jagged1 protein expression by directly targeting its 3'-untranslated region (3'-UTR). Conversely, overexpression of Jagged1 rescued cells from miR-186-induced growth inhibition. Our collective results clearly indicate that miR-186 functions as a tumor suppressor in MM, supporting its potential as a therapeutic target for the disease.
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Affiliation(s)
- Zengyan Liu
- Department of Hematology, Qilu Hospital, Shandong University, 107 Wenhuaxi Road, Jinan, Shandong 250012, China; Department of Hematology, Hospital Affiliated to Binzhou Medical University, 661 Second Huanghe Street, Binzhou 256603, China
| | - Guoqiang Zhang
- Department of Thyroid and Breast Surgery, Hospital Affiliated to Binzhou Medical University, 661 Second Huanghe Street, Binzhou 256603, China
| | - Wenzheng Yu
- Department of Hematology, Hospital Affiliated to Binzhou Medical University, 661 Second Huanghe Street, Binzhou 256603, China
| | - Na Gao
- Department of Hematology, Hospital Affiliated to Binzhou Medical University, 661 Second Huanghe Street, Binzhou 256603, China
| | - Jun Peng
- Department of Hematology, Qilu Hospital, Shandong University, 107 Wenhuaxi Road, Jinan, Shandong 250012, China.
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67
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Mousa L, Salem ME, Mikhail S. Biomarkers of Angiogenesis in Colorectal Cancer. BIOMARKERS IN CANCER 2015; 7:13-9. [PMID: 26543385 PMCID: PMC4624093 DOI: 10.4137/bic.s25250] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 09/17/2015] [Accepted: 09/23/2015] [Indexed: 12/18/2022]
Abstract
Colorectal cancer (CRC) is the third most common cancer worldwide and accounts for 10% of all new cancer diagnoses. Angiogenesis is a tightly regulated process that is mediated by a group of angiogenic factors such as vascular endothelial growth factor and its receptors. Given the widespread use of antiangiogenic agents in CRC, there has been considerable interest in the development of methods to identify novel markers that can predict outcome in the treatment of this disease with angiogenesis inhibitors. Multiple biomarkers are in various phases of development and include tissue, serum, and imaging biomarkers. The complexity of the angiogenesis pathway and the overlap between the various angiogenic factors present a significant challenge to biomarker discovery. In our review, we discuss the angiogenesis pathway and the most promising evolving concepts in biomarker discovery, as well as highlight the landmark studies that identify subgroups of patients with CRC who may preferentially benefit from angiogenesis inhibitors.
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Affiliation(s)
- Luay Mousa
- The Medstar Ohio State University Comprehensive Cancer Center-James Cancer Hospital and Solove Research Institute, Columbus, OH, USA
| | - Mohamed E Salem
- Medstar Georgetown University Hospital, Lombardi Comprehensive Cancer Center, Washington, DC, USA
| | - Sameh Mikhail
- The Medstar Ohio State University Comprehensive Cancer Center-James Cancer Hospital and Solove Research Institute, Columbus, OH, USA
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68
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Abdelmohsen K, Gorospe M. Noncoding RNA control of cellular senescence. WILEY INTERDISCIPLINARY REVIEWS-RNA 2015; 6:615-29. [PMID: 26331977 DOI: 10.1002/wrna.1297] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 07/19/2015] [Accepted: 07/20/2015] [Indexed: 12/23/2022]
Abstract
Senescent cells accumulate in normal tissues with advancing age and arise by long-term culture of primary cells. Senescence develops following exposure to a range of stress-causing agents and broadly influences the physiology and pathology of tissues, organs, and systems in the body. While many proteins are known to control senescence, numerous noncoding (nc)RNAs are also found to promote or repress the senescent phenotype. Here, we review the regulatory ncRNAs (primarily microRNAs and lncRNAs) identified to-date as key modulators of senescence. We highlight the major senescent pathways (p53/p21 and pRB/p16), as well as the senescence-associated secretory phenotype (SASP) and other senescence-associated events governed by ncRNAs, and discuss the importance of understanding comprehensively the ncRNAs implicated in cell senescence.
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Affiliation(s)
- Kotb Abdelmohsen
- Laboratory of Genetics, National Institute on Aging-Intramural Research Program, National Institutes of Health, Baltimore, MD, USA
| | - Myriam Gorospe
- Laboratory of Genetics, National Institute on Aging-Intramural Research Program, National Institutes of Health, Baltimore, MD, USA
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69
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Neuronal Differentiation of Human Mesenchymal Stem Cells Using Exosomes Derived from Differentiating Neuronal Cells. PLoS One 2015; 10:e0135111. [PMID: 26248331 PMCID: PMC4527703 DOI: 10.1371/journal.pone.0135111] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 07/17/2015] [Indexed: 12/17/2022] Open
Abstract
Exosomes deliver functional proteins and genetic materials to neighboring cells, and have potential applications for tissue regeneration. One possible mechanism of exosome-promoted tissue regeneration is through the delivery of microRNA (miRNA). In this study, we hypothesized that exosomes derived from neuronal progenitor cells contain miRNAs that promote neuronal differentiation. We treated mesenchymal stem cells (MSCs) daily with exosomes derived from PC12 cells, a neuronal cell line, for 1 week. After the treatment with PC12-derived exosomes, MSCs developed neuron-like morphology, and gene and protein expressions of neuronal markers were upregulated. Microarray analysis showed that the expression of miR-125b, which is known to play a role in neuronal differentiation of stem cells, was much higher in PC12-derived exosomes than in exosomes from B16-F10 melanoma cells. These results suggest that the delivery of miRNAs contained in PC12-derived exosomes is a possible mechanism explaining the neuronal differentiation of MSC.
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70
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Sun P, Hu JW, Xiong WJ, Mi J. miR-186 regulates glycolysis through Glut1 during the formation of cancer-associated fibroblasts. Asian Pac J Cancer Prev 2015; 15:4245-50. [PMID: 24935378 DOI: 10.7314/apjcp.2014.15.10.4245] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Emerging evidence has suggested that glycolysis is enhanced in cancer-associated fibroblasts (CAF), and miR-186 is downregulated during the CAF formation. However, it is not clear whether miR-186 is involved in the regulation of glycolysis and what the role of miR-186 plays during the CAF formation. In this study, quantitative PCR analysises show miR-186 is downregulated during the CAF formation. Moreover, miR-186 targets the 3' UTR of Glut1, and its overexpression results in the degradation of Glut1 mRNA, which eventually reduces the level of Glut1 protein. On the other hand, knockdown of miR-186 increased the expression of Glut1. Both time course and dose response experiments also demonstrated that the protein and mRNA levels of Glut1 increase during CAF formation, according to Western blot and quantitative PCR analyses, respectively. Most importantly, besides the regulation on cell cycle progression, miR-186 regulates glucose uptake and lactate production which is mediated by Glut1. These observations suggest that miR-186 plays important roles in glycolysis regulation as well as cell cycle checkpoint activation.
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Affiliation(s)
- Pan Sun
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, China E-mail : ,
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Liu FY, Zhou SJ, Deng YL, Zhang ZY, Zhang EL, Wu ZB, Huang ZY, Chen XP. MiR-216b is involved in pathogenesis and progression of hepatocellular carcinoma through HBx-miR-216b-IGF2BP2 signaling pathway. Cell Death Dis 2015; 6:e1670. [PMID: 25741595 PMCID: PMC4385924 DOI: 10.1038/cddis.2015.46] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 01/01/2015] [Accepted: 01/21/2015] [Indexed: 02/06/2023]
Abstract
This study aims to investigate the expression status of miRNA-216b in familial hepatocellular carcinoma (HCC) and the correlation between miRNA-216b expression and pathogenesis, as well as the progression of HCC. The expression profile of miRNAs in plasma of peripheral blood between HCC patients with HCC family history and healthy volunteers without HCC family history was determined by microarray. Using real-time quantitative PCR to detect the expression in paired tissues from 150 patients with HCC, miR-216b was selected as its expression value in HCC patients was significantly lower compared with healthy volunteers. Next, miR-216b expression and the clinicopathological features of HCC were evaluated. The effect of miR-216b expression on tumor cells was investigated by regulating miR-216b expression in SMMC-7721 and HepG2 in vitro and in vivo. Finally, we explored mRNA targets of miR-216b. In 150 HCC, 37 (75%) tumors showed reduced miR-216b expression comparing with their adjacent liver tissues. The decreased expression of miR-216b was significantly correlated with tumor volume (P=0.044), HBV infection (P=0.026), HBV DNA quantitative (P=0.001) and vascular invasion (P=0.032). The 5-year disease-free survival and overall rates after liver resection in low expression and high expression groups of miR-216b are 62% and 54%, 25% and 20%, respectively. MiR-216b overexpression inhibited cell proliferation, migration and invasion, and miR-216b inhibition did the opposite. The expression of hepatitis B virus x protein (HBx) has tight correlation with downregulation of miR-216b. Furthermore, miR-216b downregulated the expression of insulin-like growth factor 2 mRNA-binding protein 2 (IGF2BP2) and exerted its tumor-suppressor function through inhibition of protein kinase B and extracellular signal-regulated kinase signaling downstream of IGF2. MiR-216b inhibits cell proliferation, migration and invasion of HCC by regulating IGF2BP2 and it is regulated by HBx.
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Affiliation(s)
- F-y Liu
- 1] Department of Surgery, Wuhan Center Hospital, Wuhan, Hubei, China [2] Research Laboratory and Hepatic Surgical Center, Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, HuBei, China
| | - S-j Zhou
- Research Laboratory and Hepatic Surgical Center, Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, HuBei, China
| | - Y-l Deng
- Department of Gastroenterology, Wuhan Center Hospital, Wuhan, Hubei, China
| | - Z-y Zhang
- Research Laboratory and Hepatic Surgical Center, Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, HuBei, China
| | - E-l Zhang
- Research Laboratory and Hepatic Surgical Center, Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, HuBei, China
| | - Z-b Wu
- Research Laboratory and Hepatic Surgical Center, Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, HuBei, China
| | - Z-y Huang
- Research Laboratory and Hepatic Surgical Center, Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, HuBei, China
| | - X-p Chen
- Research Laboratory and Hepatic Surgical Center, Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, HuBei, China
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Zhang ZL, Bai ZH, Wang XB, Bai L, Miao F, Pei HH. miR-186 and 326 predict the prognosis of pancreatic ductal adenocarcinoma and affect the proliferation and migration of cancer cells. PLoS One 2015; 10:e0118814. [PMID: 25742499 PMCID: PMC4351009 DOI: 10.1371/journal.pone.0118814] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 01/06/2015] [Indexed: 01/26/2023] Open
Abstract
MicroRNAs can function as key tumor suppressors or oncogenes and act as biomarkers for cancer diagnosis or prognosis. Although high-throughput assays have revealed many miRNA biomarkers for pancreatic ductal adenocarcinoma (PDAC), only a few have been validated in independent populations or investigated for functional significance in PDAC pathogenesis. In this study, we correlated the expression of 36 potentially prognostic miRNAs within PDAC tissue with clinico-pathological features and survival in 151 Chinese patients. We then analyzed the functional roles and target genes of two miRNAs in PDAC development. We found that high expression of miR-186 and miR-326 predict poor and improved survival, respectively. miR-186 was over-expressed in PDAC patients compared with controls, especially in patients with large tumors (>2 cm), lymph node metastasis, or short-term survival (< 24 months). In contrast, miR-326 was down-regulated in patients compared with controls and displayed relatively increased expression in the patients with long-term survival or without venous invasion. Functional experiments revealed that PDAC cell proliferation and migration was decreased following inhibition and enhanced following over-expression of miR-186. In contrast, it was enhanced following inhibition and decreased after over-expression of miR-326. A luciferase assay indicated that miR-186 can bind directly to the 3′-UTR of NR5A2 to repress gene expression. These findings suggest that miR-186 over-expression contributes to the invasive potential of PDAC, likely via suppression of NR5A2, thereby leading to a poor prognosis; high miR-326 expression prolongs survival likely via the decreasing invasive potential of PDAC cells. These two miRNAs can be used as markers for clinical diagnosis and prognosis, and they represent therapeutic targets for PDAC.
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Affiliation(s)
- Zheng-liang Zhang
- Emergency Department, The Second Affiliated Hospital of Xi’an Jiaotong University, 710004, Xi’an, Shaan Xi, Peoples’ Republic of China
| | - Zheng-hai Bai
- Emergency Department, The Second Affiliated Hospital of Xi’an Jiaotong University, 710004, Xi’an, Shaan Xi, Peoples’ Republic of China
| | - Xiao-bo Wang
- Emergency Department, The Second Affiliated Hospital of Xi’an Jiaotong University, 710004, Xi’an, Shaan Xi, Peoples’ Republic of China
| | - Ling Bai
- Emergency Department, The Second Affiliated Hospital of Xi’an Jiaotong University, 710004, Xi’an, Shaan Xi, Peoples’ Republic of China
| | - Fei Miao
- Emergency Department, The Second Affiliated Hospital of Xi’an Jiaotong University, 710004, Xi’an, Shaan Xi, Peoples’ Republic of China
| | - Hong-hong Pei
- Emergency Department, The Second Affiliated Hospital of Xi’an Jiaotong University, 710004, Xi’an, Shaan Xi, Peoples’ Republic of China
- * E-mail:
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73
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Bhajun R, Guyon L, Pitaval A, Sulpice E, Combe S, Obeid P, Haguet V, Ghorbel I, Lajaunie C, Gidrol X. A statistically inferred microRNA network identifies breast cancer target miR-940 as an actin cytoskeleton regulator. Sci Rep 2015; 5:8336. [PMID: 25673565 PMCID: PMC5389139 DOI: 10.1038/srep08336] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 01/14/2015] [Indexed: 01/21/2023] Open
Abstract
MiRNAs are key regulators of gene expression. By binding to many genes, they create a complex network of gene co-regulation. Here, using a network-based approach, we identified miRNA hub groups by their close connections and common targets. In one cluster containing three miRNAs, miR-612, miR-661 and miR-940, the annotated functions of the co-regulated genes suggested a role in small GTPase signalling. Although the three members of this cluster targeted the same subset of predicted genes, we showed that their overexpression impacted cell fates differently. miR-661 demonstrated enhanced phosphorylation of myosin II and an increase in cell invasion, indicating a possible oncogenic miRNA. On the contrary, miR-612 and miR-940 inhibit phosphorylation of myosin II and cell invasion. Finally, expression profiling in human breast tissues showed that miR-940 was consistently downregulated in breast cancer tissues
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Affiliation(s)
- Ricky Bhajun
- 1] Univ. Grenoble Alpes, iRTSV-BGE, F-38000 Grenoble, France [2] CEA, iRTSV-BGE, F-38000 Grenoble, France [3] INSERM, BGE, F-38000 Grenoble, France
| | - Laurent Guyon
- 1] Univ. Grenoble Alpes, iRTSV-BGE, F-38000 Grenoble, France [2] CEA, iRTSV-BGE, F-38000 Grenoble, France [3] INSERM, BGE, F-38000 Grenoble, France
| | - Amandine Pitaval
- 1] Univ. Grenoble Alpes, iRTSV-BGE, F-38000 Grenoble, France [2] CEA, iRTSV-BGE, F-38000 Grenoble, France [3] INSERM, BGE, F-38000 Grenoble, France
| | - Eric Sulpice
- 1] Univ. Grenoble Alpes, iRTSV-BGE, F-38000 Grenoble, France [2] CEA, iRTSV-BGE, F-38000 Grenoble, France [3] INSERM, BGE, F-38000 Grenoble, France
| | - Stéphanie Combe
- 1] Univ. Grenoble Alpes, iRTSV-BGE, F-38000 Grenoble, France [2] CEA, iRTSV-BGE, F-38000 Grenoble, France [3] INSERM, BGE, F-38000 Grenoble, France
| | - Patricia Obeid
- 1] Univ. Grenoble Alpes, iRTSV-BGE, F-38000 Grenoble, France [2] CEA, iRTSV-BGE, F-38000 Grenoble, France [3] INSERM, BGE, F-38000 Grenoble, France
| | - Vincent Haguet
- 1] Univ. Grenoble Alpes, iRTSV-BGE, F-38000 Grenoble, France [2] CEA, iRTSV-BGE, F-38000 Grenoble, France [3] INSERM, BGE, F-38000 Grenoble, France
| | - Itebeddine Ghorbel
- 1] Univ. Grenoble Alpes, iRTSV-BGE, F-38000 Grenoble, France [2] CEA, iRTSV-BGE, F-38000 Grenoble, France [3] INSERM, BGE, F-38000 Grenoble, France
| | - Christian Lajaunie
- 1] Center for Computational Biology - CBIO, Mines ParisTech, F-77300 Fontainebleau, France [2] Institut Curie, F-75248 Paris, France [3] INSERM, U900, F-75248 Paris, France
| | - Xavier Gidrol
- 1] Univ. Grenoble Alpes, iRTSV-BGE, F-38000 Grenoble, France [2] CEA, iRTSV-BGE, F-38000 Grenoble, France [3] INSERM, BGE, F-38000 Grenoble, France
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74
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Lv J, Fu Z, Shi M, Xia K, Ji C, Xu P, Lv M, Pan B, Dai L, Xie H. Systematic analysis of gene expression pattern in has-miR-760 overexpressed resistance of the MCF-7 human breast cancer cell to doxorubicin. Biomed Pharmacother 2014; 69:162-9. [PMID: 25661353 DOI: 10.1016/j.biopha.2014.11.028] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 11/12/2014] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND/AIMS Chemoresistance of breast cancer is a growing problem and still a major clinical obstacle to successful treatment in clinical patients. miR-760 was significantly downregulated in chemoresistance breast cancer tissues compared to chemo-sensitive tissues in our previous study. However, the role of miR-760 in modulating drug resistance remains largely unexplored. In this study, we sought to determine the expression pattern of miR-760 targeted mRNAs, and explore their potential functions and participated-pathways in breast cancer drug resistance cells. RESULTS Compared to parental cell line MCF-7, miR-760 was downregulated by 6.15 folds in MCF-7/Adr cells. The qRT-PCR result showed that compared to miR-760 negative control cells group, miR-760 was up-regulated 15.817 folds after miR-760 lentiviral transfection in miR-760 mimics group. The microarray data showed that 270 genes were dysregulated over 2-fold change in MCF-7/Adr cells after miR-760 overexpressed, including 241 up-regulated and 29 downregulated genes. GO analysis result appeared that the predicted target genes of miR-760 mainly regulated DNA binding, protein binding, molecular function, nucleic acid binding, and so on; the pathway analysis data demonstrated that these target genes mainly involved in cell cycle, TGF-beta signaling pathway, mRNA processing reactome, G protein signaling, apoptosis, Wnt signaling pathway, and other signaling pathways. There were 3 predicted target genes (RHOB, ANGOTL4, ABCA1) of miR-760 were selected at a P value<0.05 and the fold enrichment was>40. CONCLUSION Our study explored the genes expression pattern after miR-760 overexpresssed, and confirmed 3 dominantly dysregulated genes, which could expand the insights into the miR-760 function and molecular mechanisms in drug resistance of breast cancer. This study might afford a comprehensive understanding of miR-760 as prognostic biomarkers during clinical treatment, and we supposed that the miR-760 expression levels in drug resistance carcinoma tissues could be pursued to develop new strategies for targeted therapies in chemoresistant breast cancer patients.
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Affiliation(s)
- Jianxin Lv
- Yangzhou Maternal and Child Health Hospital, Affiliated with Yangzhou Medical University, Yangzhou 225002, China
| | - Ziyi Fu
- Nanjing Maternal and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, Nanjing 210004, China
| | - Min Shi
- Yangzhou Maternal and Child Health Hospital, Affiliated with Yangzhou Medical University, Yangzhou 225002, China
| | - Kai Xia
- The Affiliated Jiangyin Hospital of Southeast University Medical College, Jiangyin 214400, China
| | - Chenbo Ji
- Nanjing Maternal and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, Nanjing 210004, China
| | - Pengfei Xu
- Nanjing Maternal and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, Nanjing 210004, China
| | - Mingming Lv
- Nanjing Maternal and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, Nanjing 210004, China
| | - Bo Pan
- Yangzhou Maternal and Child Health Hospital, Affiliated with Yangzhou Medical University, Yangzhou 225002, China
| | - Luxian Dai
- Yangzhou Maternal and Child Health Hospital, Affiliated with Yangzhou Medical University, Yangzhou 225002, China
| | - Hui Xie
- Nanjing Maternal and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, Nanjing 210004, China; The People's Hospital of Jiangsu Province/The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
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Lv J, Xia K, Xu P, Sun E, Ma J, Gao S, Zhou Q, Zhang M, Wang F, Chen F, Zhou P, Fu Z, Xie H. miRNA expression patterns in chemoresistant breast cancer tissues. Biomed Pharmacother 2014; 68:935-42. [PMID: 25451164 DOI: 10.1016/j.biopha.2014.09.011] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 09/21/2014] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND/AIMS Breast cancer chemoresistance is a major obstacle to the successful treatment of patients. miRNAs perform critical roles in biological processes, including tumorigenesis and chemoresistance. However, little clinical data are available regarding the relationship between miRNA expression patterns and breast cancer chemoresistance. METHODS We created a doxorubicin-resistant MCF-7 (MCF-/Adr) cell line using a pulse-selection method; then verified the resistance of the MCF-7/Adr cell line to doxorubicin by using the methyl thiazolyl tetrazolium (MTT) assay, terminal deoxyribonucleotidyl transferase (TdT)-mediated dUTP nick-end labeling (TUNEL) staining, and Intracellular doxorubicin accumulation assay. Then, we performed qRT-PCR to detect the expression patterns of 14 selected miRNAs (which are related to breast cancer resistance) in both cell lines. Subsequently, we performed a bioinformatics analysis, including Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses, to determine the putative functions of 13 differentially expressed miRNA-targeted genes. Finally, we tested the expression levels of these 13 miRNAs in 10 chemotherapy non-responder breast cancer tissues and 29 responder tissues. All statistical analyses were performed by a two-tailed Student's t-test, and a P value less than 0.05 was considered statistically significant. RESULTS The results of the MTT assay showed that the MCF-7/Adr cell line was significantly more resistant to doxorubicin compared to the MCF-7 cells The results of the TUNEL assay indicated that doxorubicin induced an increase in the number apoptotic cells in the MCF-7 group. Additionally, the accumulation of doxorubicin was higher in MCF-7 cells compared to MCF-7/Adr cells, which was consistent with the MTT and TUNEL results. The qRT-PCR results demonstrated that compared to the parental MCF-7 cell line, miR-200a, miR-141, miR-200c, miR-31, miR-429, and miR-196b were over-expressed, and let-7e, miR-576-3p, miR-125b-1, miR-370, miR-145, miR-765, and miR-760 were significantly down-regulated in MCF-7/Adr cells. The GO analysis results revealed that the predicted target genes of these 14 miRNAs primarily regulated protein binding, zinc ion binding, DNA binding, and transcription factor activity. The KEGG data demonstrated that these target genes are mainly involved in the MAPK signaling pathway, regulation of the actin cytoskeleton, cytokine-cytokine receptor interaction, and other signaling pathways. Compared to the breast cancer tissues from chemotherapy responders, 10 miRNAs were identified to be dysregulated in the chemoresistant breast cancer tissues. Three of these miRNAs were up-regulated (miR-141, miR-200c, and miR-31), and 7 were down-regulated (let-7e, miR-576-3p, miR-125b-1, miR-370, miR-145, miR-765, and miR-760). CONCLUSION In this study, we identified 10 dysregulated miRNAs in both breast cancer cells and chemoresistant tissues, which might be biomarkers for the prognosis of breast cancer chemoresistance. Our study contributes to a comprehensive understanding of prognostic biomarkers during clinical treatment, and we hypothesize that the miRNA signatures of drug-resistant carcinoma tissues could be useful for developing new strategies for targeted therapies in patients with chemoresistant breast cancer.
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Affiliation(s)
- Jianxin Lv
- Yangzhou Maternal and Child Health Hospital, Affiliated with Yangzhou Medical University, 225002 Yangzhou, China
| | - Kai Xia
- The Affiliated Jiangyin Hospital of Southeast University Medical College, 214400 Jiangyin, China
| | - Pengfei Xu
- Nanjing Maternity and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, 210004 Nanjing, China
| | - Erhu Sun
- Nanjing Maternity and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, 210004 Nanjing, China
| | - Jingjing Ma
- Nanjing Maternity and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, 210004 Nanjing, China
| | - Sheng Gao
- Nanjing Maternity and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, 210004 Nanjing, China
| | - Qian Zhou
- Nanjing Maternity and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, 210004 Nanjing, China
| | - Min Zhang
- Nanjing Maternity and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, 210004 Nanjing, China
| | - Fengliang Wang
- Nanjing Maternity and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, 210004 Nanjing, China
| | - Fei Chen
- Nanjing Maternity and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, 210004 Nanjing, China
| | - Ping Zhou
- Nanjing Maternity and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, 210004 Nanjing, China
| | - Ziyi Fu
- Nanjing Maternity and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, 210004 Nanjing, China.
| | - Hui Xie
- Nanjing Maternity and Child Health Medical Institute, Affiliated Nanjing Maternal and Child Health Hospital, Nanjing Medical University, 210004 Nanjing, China
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Zhang R, Leng H, Huang J, Du Y, Wang Y, Zang W, Chen X, Zhao G. miR-337 regulates the proliferation and invasion in pancreatic ductal adenocarcinoma by targeting HOXB7. Diagn Pathol 2014; 9:171. [PMID: 25183455 PMCID: PMC4164712 DOI: 10.1186/s13000-014-0171-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 08/19/2014] [Indexed: 12/12/2022] Open
Abstract
Background miRNAs are involved in coordinating a variety of cellular processes by regulating their target genes. Aberrant expression of miRNAs is correlated with various cancers. Previous studies have shown that miR-337 is significantly down-regulated in pancreatic ductal adenocarcinoma (PDAC) and that its expression is negatively correlated to the expression of HOXB7. Both miR-337 and HOXB7 are associated with the prognosis of PDAC patients. The purpose of this study was to identify the molecular mechanisms by which miR-337 acts as a tumor suppressor in PDAC. Methods Synthetic miR-337 mimics were transfected into PANC-1 and As-PC-1 cells using Lipofectamine™ 2000. The expression of HOXB7 protein was analyzed by Western blot. Luciferase reporter plasmids were constructed to confirm that HOXB7 3′UTR was the target of miR-337. The effect of miR-337 on cell proliferation was evaluated by CCK8 assay and colony formation assay, and cell invasion was evaluated by wound healing assay and transwell assay. Results Western blot and luciferase activity assays identified HOXB7 as the target of miR-337. A CCK-8 assay showed the absorbance of cells transfected with miR-337 mimics to be less than that of control cells, and that the number of cell clones was significantly decreased by miR-337 expression. A wound healing assay showed the invasion rate of cells transfected with miR-337 mimics at 36 h to be markedly lower than in controls. The average number of cells penetrating the Matrigel was significantly lower than the controls. Conclusion These findings suggest that miR-337 targets HOXB7 and effects significant suppression of PDAC cell proliferation and invasion. Virtual Slides The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/13000_2014_171
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Affiliation(s)
- Rui Zhang
- Department of emergency, the First Affiliated Hospital of Zhengzhou University, No,1 Jianshe Road, Zhengzhou 450052, Henan, China.
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Yoo JK, Kim CH, Jung HY, Lee DR, Kim JK. Discovery and characterization of miRNA during cellular senescence in bone marrow-derived human mesenchymal stem cells. Exp Gerontol 2014; 58:139-45. [PMID: 25087724 DOI: 10.1016/j.exger.2014.07.020] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 07/24/2014] [Accepted: 07/25/2014] [Indexed: 12/18/2022]
Abstract
Cellular senescence is an irreversible cell cycle arrest in which specific mRNAs and miRNAs are involved in senescence progression. miRNAs interact with specific mRNAs to regulate various cellular mechanisms, including metabolism, proliferation, apoptosis, senescence and differentiation. In this study, we identify and characterize miRNAs during cellular senescence in mesenchymal stem cells (MSCs). Using previously reported miRNAs, expression profiling of 23 miRNAs was performed using real-time PCR analysis. Among these miRNAs, 19 miRNAs showed upregulated expression patterns in senescent MSCs compared with young MSCs, and 5 miRNAs were downregulated. These miRNAs have not been previously identified as being related to cellular senescence but seem to be related. miR-103-2*, miR-140-5p and miR-330-5p are highly upregulated, while miR-29b and miR-199b-5p are significantly downregulated in senescent MSCs. We identify unique functions of 5 miRNAs and predict putative target genes of 5 miRNAs using our previous report. Among them, miR-199b-5p directly suppressed LAMC1 expression, as shown in a luciferase assay. miR-199b-5p significantly regulates translational activity but does not control post-transcriptional activity. Likewise, miR-199b-5p modulates LAMC networks, which demonstrates the resulting phenomenon during cellular senescence, namely, that miR-199b-5p indirectly regulates cellular senescence in MSCs.
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Affiliation(s)
- Jung Ki Yoo
- Department of Pharmacy, College of Pharmacy, CHA University, 222 Yatap-dong, Bundang-gu, Seongnam-si, Gyeonggi-do 463-836, Republic of Korea
| | - Chang-Hyun Kim
- College of Medicine, Dongguk Ilsan Hospital, Gyeonggi-do 410-773, Republic of Korea
| | - Ho Yong Jung
- Department of Pharmacy, College of Pharmacy, CHA University, 222 Yatap-dong, Bundang-gu, Seongnam-si, Gyeonggi-do 463-836, Republic of Korea
| | - Dong Ryul Lee
- Fertility Center of CHA Gangnam Medical Center, College of Medicine, CHA University, 606-5 Yeoksam-dong, Gangnam-gu, Seoul 135-081, Republic of Korea.
| | - Jin Kyeoung Kim
- Department of Pharmacy, College of Pharmacy, CHA University, 222 Yatap-dong, Bundang-gu, Seongnam-si, Gyeonggi-do 463-836, Republic of Korea.
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78
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Lee YH, Kim SY, Bae YS. Upregulation of miR-760 and miR-186 is associated with replicative senescence in human lung fibroblast cells. Mol Cells 2014; 37:620-7. [PMID: 25139266 PMCID: PMC4145374 DOI: 10.14348/molcells.2014.0157] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 07/14/2014] [Accepted: 07/22/2014] [Indexed: 12/30/2022] Open
Abstract
We have previously shown that microRNAs (miRNAs) miR-760, miR-186, miR-337-3p, and miR-216b stimulate premature senescence through protein kinase CK2 (CK2) down-regulation in human colon cancer cells. Here, we examined whether these four miRNAs are involved in the replicative senescence of human lung fibroblast IMR-90 cells. miR-760 and miR-186 were significantly upregulated in replicatively senescent IMR-90 cells, and their joint action with both miR-337-3p and miR-216b was necessary for efficient downregulation of the α subunit of CK2 (CK2α) in IMR-90 cells. A mutation in any of the four miRNA-binding sequences within the CK2α 3'-untranslated region (UTR) indicated that all four miRNAs should simultaneously bind to the target sites for CK2α downregulation. The four miRNAs increased senescence-associated β-galactosidase (SA-β-gal) staining, p53 and p21(Cip1/WAF1) expression, and reactive oxygen species (ROS) production in proliferating IMR-90 cells. CK2α over-expression almost abolished this event. Taken together, the present results suggest that the upregulation of miR-760 and miR-186 is associated with replicative senescence in human lung fibroblast cells, and their cooperative action with miR-337-3p and miR-216b may induce replicative senescence through CK2α downregulation-dependent ROS generation.
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Affiliation(s)
- Young-Hoon Lee
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 702-701,
Korea
| | - Soo Young Kim
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 702-701,
Korea
| | - Young-Seuk Bae
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 702-701,
Korea
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Zheng L, Zhang X, Yang F, Zhu J, Zhou P, Yu F, Hou L, Xiao L, He Q, Wang B. Regulation of the P2X7R by microRNA-216b in human breast cancer. Biochem Biophys Res Commun 2014; 452:197-204. [PMID: 25078617 DOI: 10.1016/j.bbrc.2014.07.101] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 07/22/2014] [Indexed: 12/21/2022]
Abstract
Breast cancer is the most common cancer in women around the world. However, the molecular mechanisms underlying breast cancer pathogenesis are only partially understood. Here, in this study, we found that P2X7R was up-regulated and miR-216b was down-regulated in breast cancer cell lines and tissues. Using bioinformatic analysis and 3'UTR luciferase reporter assay, we determined P2X7R can be directly targeted by miR-216b, which can down-regulate endogenous P2X7R mRNA and protein levels. Ectopic expression of miR-216b mimics leads to inhibited cell growth and apoptosis, while blocking expression of the miR-216b results in increased cell proliferation. Furthermore, our findings demonstrate that knockdown of P2X7R promotes apoptosis in breast cancer cells through down-regulating Bcl-2 and increasing the cleavage caspase-3 protein level. Finally, we confirmed that down-regulation of miR-216b in breast cancer is inversely associated with P2X7R expression level. Together, these findings establish miR-216b as a novel regulator of P2X7R and a potential therapeutic target for breast cancer.
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Affiliation(s)
- Luming Zheng
- Department of Breast and Thyroid, Jinan Military General Hospital, Jinan 250031, Shandong Province, China
| | - Xukui Zhang
- Department of General Surgery, Jinan Military General Hospital, Jinan 250031, Shandong Province, China
| | - Feng Yang
- Department of General Surgery, Shanghai Ninth People's Hospital, Shanghai 200011, China
| | - Jian Zhu
- Department of Breast and Thyroid, Jinan Military General Hospital, Jinan 250031, Shandong Province, China
| | - Peng Zhou
- Department of Breast and Thyroid, Jinan Military General Hospital, Jinan 250031, Shandong Province, China
| | - Fang Yu
- Department of Breast and Thyroid, Jinan Military General Hospital, Jinan 250031, Shandong Province, China
| | - Lei Hou
- Department of Breast and Thyroid, Jinan Military General Hospital, Jinan 250031, Shandong Province, China
| | - Lei Xiao
- Department of Breast and Thyroid, Jinan Military General Hospital, Jinan 250031, Shandong Province, China
| | - Qingqing He
- Department of Breast and Thyroid, Jinan Military General Hospital, Jinan 250031, Shandong Province, China
| | - Baocheng Wang
- Department of Oncology, Jinan Military General Hospital, Jinan 250031, Shandong Province, China.
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Xu X, Fu Y, Tong J, Fan S, Xu K, Sun H, Liang Y, Yan C, Yuan Z, Ge Y. MicroRNA-216b/Beclin 1 axis regulates autophagy and apoptosis in human Tenon's capsule fibroblasts upon hydroxycamptothecin exposure. Exp Eye Res 2014; 123:43-55. [DOI: 10.1016/j.exer.2014.03.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 03/17/2014] [Accepted: 03/20/2014] [Indexed: 10/25/2022]
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Ye JJ, Cao J. MicroRNAs in colorectal cancer as markers and targets: Recent advances. World J Gastroenterol 2014; 20:4288-4299. [PMID: 24764666 PMCID: PMC3989964 DOI: 10.3748/wjg.v20.i15.4288] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 01/02/2014] [Accepted: 01/20/2014] [Indexed: 02/06/2023] Open
Abstract
MicroRNAs are evolutionarily conserved small non-coding RNA molecules encoded by eukaryotic genomic DNA, and function in post-transcriptional regulation of gene expression via base-pairing with complementary sequences in target mRNAs, resulting in translational repression or degradation of target mRNAs. They represent one of the major types of epigenetic modification and play important roles in all aspects of cellular activities. Altered expression of microRNAs has been found in various human diseases including cancer. Many efforts have been made to discover the characteristic microRNA expression profiles, to understand the roles of aberrantly expressed microRNAs and underlying mechanisms in different cancers. With the application of DNA microarray, real-time quantitative polymerase chain reaction and other molecular biology techniques, increasing evidence has been accumulated which reveal that aberrant microRNAs can be detected not only intracellularly within the cancer cells, but also extracellularly in plasma of patients, postulating the potential of aberrant microRNAs as promising diagnostic/prognostic markers and attracting therapeutic targets. This review is intended to provide the most recent advances in microRNA studies in one of the most common cancers, colorectal cancer, especially the identification of those specifically altered microRNAs in colorectal cancer, validation for their relevance to clinical pathological parameters of patients, functional analyses and potential applications of these microRNAs.
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RIES JUTTA, VAIRAKTARIS ELEFTHERIOS, AGAIMY ABBAS, KINTOPP RITA, BARAN CHRISTOPH, NEUKAM FRIEDRICHW, NKENKE EMEKA. miR-186, miR-3651 and miR-494: Potential biomarkers for oral squamous cell carcinoma extracted from whole blood. Oncol Rep 2014; 31:1429-36. [DOI: 10.3892/or.2014.2983] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 12/02/2013] [Indexed: 11/05/2022] Open
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83
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LIU XIA, GAO YUTAO, LU YI, ZHANG JIAN, LI LI, YIN FUQIANG. Upregulation of NEK2 is associated with drug resistance in ovarian cancer. Oncol Rep 2013; 31:745-54. [DOI: 10.3892/or.2013.2910] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Accepted: 11/22/2013] [Indexed: 11/06/2022] Open
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Madhavan S, Gusev Y, Natarajan TG, Song L, Bhuvaneshwar K, Gauba R, Pandey A, Haddad BR, Goerlitz D, Cheema AK, Juhl H, Kallakury B, Marshall JL, Byers SW, Weiner LM. Genome-wide multi-omics profiling of colorectal cancer identifies immune determinants strongly associated with relapse. Front Genet 2013; 4:236. [PMID: 24312117 PMCID: PMC3834519 DOI: 10.3389/fgene.2013.00236] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 10/23/2013] [Indexed: 12/12/2022] Open
Abstract
The use and benefit of adjuvant chemotherapy to treat stage II colorectal cancer (CRC) patients is not well understood since the majority of these patients are cured by surgery alone. Identification of biological markers of relapse is a critical challenge to effectively target treatments to the ~20% of patients destined to relapse. We have integrated molecular profiling results of several "omics" data types to determine the most reliable prognostic biomarkers for relapse in CRC using data from 40 stage I and II CRC patients. We identified 31 multi-omics features that highly correlate with relapse. The data types were integrated using multi-step analytical approach with consecutive elimination of redundant molecular features. For each data type a systems biology analysis was performed to identify pathways biological processes and disease categories most affected in relapse. The biomarkers detected in tumors urine and blood of patients indicated a strong association with immune processes including aberrant regulation of T-cell and B-cell activation that could lead to overall differences in lymphocyte recruitment for tumor infiltration and markers indicating likelihood of future relapse. The immune response was the biologically most coherent signature that emerged from our analyses among several other biological processes and corroborates other studies showing a strong immune response in patients less likely to relapse.
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Affiliation(s)
- Subha Madhavan
- Department of Oncology, Innovation Center for Biomedical Informatics, Georgetown University Medical CenterWashington, DC, USA
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical CenterWashington DC, USA
| | - Yuriy Gusev
- Department of Oncology, Innovation Center for Biomedical Informatics, Georgetown University Medical CenterWashington, DC, USA
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical CenterWashington DC, USA
| | - Thanemozhi G. Natarajan
- Department of Oncology, Innovation Center for Biomedical Informatics, Georgetown University Medical CenterWashington, DC, USA
| | - Lei Song
- Department of Oncology, Innovation Center for Biomedical Informatics, Georgetown University Medical CenterWashington, DC, USA
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical CenterWashington DC, USA
| | - Krithika Bhuvaneshwar
- Department of Oncology, Innovation Center for Biomedical Informatics, Georgetown University Medical CenterWashington, DC, USA
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical CenterWashington DC, USA
| | - Robinder Gauba
- Department of Oncology, Innovation Center for Biomedical Informatics, Georgetown University Medical CenterWashington, DC, USA
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical CenterWashington DC, USA
| | - Abhishek Pandey
- Department of Oncology, Innovation Center for Biomedical Informatics, Georgetown University Medical CenterWashington, DC, USA
| | - Bassem R. Haddad
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical CenterWashington DC, USA
| | - David Goerlitz
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical CenterWashington DC, USA
| | - Amrita K. Cheema
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical CenterWashington DC, USA
| | | | - Bhaskar Kallakury
- Department of Pathology, Lombardi Comprehensive Cancer Center, Georgetown University Medical CenterWashington DC, USA
| | - John L. Marshall
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical CenterWashington DC, USA
| | - Stephen W. Byers
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical CenterWashington DC, USA
| | - Louis M. Weiner
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical CenterWashington DC, USA
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Iwaya T, Fukagawa T, Suzuki Y, Takahashi Y, Sawada G, Ishibashi M, Kurashige J, Sudo T, Tanaka F, Shibata K, Endo F, Katagiri H, Ishida K, Kume K, Nishizuka S, Iinuma H, Wakabayashi G, Mori M, Sasako M, Mimori K. Contrasting expression patterns of histone mRNA and microRNA 760 in patients with gastric cancer. Clin Cancer Res 2013; 19:6438-49. [PMID: 24097871 DOI: 10.1158/1078-0432.ccr-12-3186] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
PURPOSE Recent studies revealed that both disseminated tumor cells and noncancerous cells contributed to cancer progression cooperatively in the bone marrow. Here, RNA-seq analysis of bone marrow from gastric cancer patients was performed to identify prognostic markers for gastric cancer. EXPERIMENTAL DESIGN Bone marrow samples from eight gastric cancer patients (stages I and IV: n = 4 each) were used for RNA-seq analysis. Results were validated through quantitative real-time PCR (qRT-PCR) analysis of HIST1H3D expression in 175 bone marrow, 92 peripheral blood, and 115 primary tumor samples from gastric cancer patients. miR-760 expression was assayed using qRT-PCR in 105 bone marrow and 96 primary tumor samples. Luciferase reporter assays were performed to confirm whether histone mRNAs were direct targets of miR-760. miR-760 expression was also evaluated in noncancerous cells from gastric cancer patients. RESULTS RNA-seq analysis of bone marrow samples from gastric cancer patients revealed higher expression of multiple histone mRNAs in stage IV patients. HIST1H3D expression in the bone marrow, peripheral blood, and primary tumor of stage IV patients was higher than that in stage I patients (P = 0.0284, 0.0243, and 0.0006, respectively). In contrast, miR-760 was downregulated in the bone marrow and primary tumor of stage IV patients compared with stage I patients (P = 0.0094 and 0.0018, respectively). Histone mRNA and miR-760 interacted directly. Furthermore, miR-760 was downregulated in noncancerous mucosa in stage IV gastric cancer patients. CONCLUSION Histone mRNA was upregulated, whereas miR-760 was downregulated in the bone marrow and primary tumor of advanced gastric cancer patients, suggesting that the histone mRNA/miR-760 axis had a crucial role in the development of gastric cancer.
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Affiliation(s)
- Takeshi Iwaya
- Authors' Affiliations: Department of Surgery, Kyushu University Beppu Hospital, Beppu; Department of Surgery, Iwate Medical University, Morioka; Department of Gastric Surgery Division, National Cancer Center Hospital; Department of Medical Genome Sciences, Graduate School of Frontier Sciences, University of Tokyo, Kashiwa-shi, Chiba; Department of Surgery, Teikyo University School of Medicine, Tokyo; Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka, University, Suita; and Department of Digestive Surgery, Hyogo Medical College, Japan
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Li H, Yin C, Zhang B, Sun Y, Shi L, Liu N, Liang S, Lu S, Liu Y, Zhang J, Li F, Li W, Liu F, Sun L, Qi Y. PTTG1 promotes migration and invasion of human non-small cell lung cancer cells and is modulated by miR-186. Carcinogenesis 2013; 34:2145-55. [PMID: 23671127 DOI: 10.1093/carcin/bgt158] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Deeper mechanistic understanding of non-small cell lung cancer (NSCLC), a leading cause of total cancer-related deaths, may facilitate the establishment of more effective therapeutic strategies. In this study, pituitary tumor transforming gene (PTTG1) expression was associated with lymph node and distant metastasis in patients with NSCLC and was correlated with patient survival. Reduction of PTTG1 by small interfering RNA (siRNA) inhibits the migration and invasion of NSCLC cells by mediating matrix metalloproteinases expression. To the best of our knowledge, this study is the first to report that PTTG1 promotes epidermal growth factor (EGF) induced the phosphorylation of LIN-11, Isl1 and MEC-3 protein domain kinase and cofilin, a critical step in cofilin recycling and actin polymerization. Additionally, EGF-induced Akt phosphorylation was suppressed through knockdown of PTTG1. Interestingly, miR-186 can modulate PTTG1 protein expression. As observed from the animal experiment in this study, knockdown of PTTG1 through siRNA and overexpression of miR-186 inhibited invasive activity of NSCLC cells toward the SCID mice lung. In summary, our in vitro and in vivo results indicate that PTTG1 modulated by miR-186 has an important function in NSCLC invasion/metastasis. This study identified both PTTG1 and miR-186 as potential anti-invasion targets for therapeutic intervention in NSCLC.
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Affiliation(s)
- Hongli Li
- Department of Pathology, Weifang Medical University, Weifang 261053, China
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Park JH, Kim JJ, Bae YS. Involvement of PI3K-AKT-mTOR pathway in protein kinase CKII inhibition-mediated senescence in human colon cancer cells. Biochem Biophys Res Commun 2013; 433:420-5. [PMID: 23523798 DOI: 10.1016/j.bbrc.2013.02.108] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Accepted: 02/23/2013] [Indexed: 10/27/2022]
Abstract
Cellular senescence is a tumor suppression mechanism. We previously reported that CKII downregulation induces senescence in human lung fibroblast IMR-90 and colon cancer HCT116 cells. In this study, potential longevity drugs, including rapamycin, vitamin C, and vitamin E, blocked CKII downregulation-mediated senescence through reduction of reactive oxygen species (ROS) production in HCT116 cells. Since rapamycin is a mammalian target of rapamycin (mTOR) inhibitor, we examined the roles of mTOR and its upstream regulators phosphatidylinositol 3-kinase (PI3K) and AKT in CKII inhibition-mediated senescence. CKIIα knock-down or CKII inhibitor treatment strikingly increased phosphorylation of mTOR, p70S6K, an mTOR substrate, and AKT, whereas CKIIα overexpression reduced this phosphorylation event. This result indicated that CKII inhibition activated the PI3K-AKT-mTOR pathway. Further, pharmacological inhibition of PI3K and AKT attenuated ROS production and senescence in CKII-downregulated cells. Taken together, these results demonstrate, for the first time, that the PI3K-AKT-mTOR-ROS pathway is necessary for CKII inhibition-mediated cellular senescence.
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Affiliation(s)
- Ji Hye Park
- School of Life Sciences and Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu 702-701, Republic of Korea
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