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  • TINCR suppresses proliferation and invasion through regulating miR-544a/FBXW7 axis in lung cancer. 29324317

    Long noncoding RNAs (LncRNAs) play critical roles in multiple biological processes implicated in the development and progression of cancers. Terminal differentiation-induced lncRNA (TINCR) has been demonstrated to be associated with the carcinogenesis of several cancers. However, little is known about the function and mechanism of TINCR in lung cancer.qRT-PCR was performed to measure the expression of TINCR, miR-544a or FBXW7 mRNA in lung cancer tissues or cells. FBXW7 protein level was detected via western blot analysis. Cell Counting Kit-8 (CCK-8) and transwell invasion analysis were used to assess the proliferative and invasive ability of lung cancer cells. Bioinformatic softwares, luciferase reporter assay, and RNA immunoprecipitation (RIP) were employed to explore the relationship between TINCR, miR-544a and FBXW7.TINCR expression was downregulated while miR-544a expression was upregulated in lung cancer tissues and cells. TINCR overexpression suppressed proliferation and invasion in lung cancer cells. Moreover, TINCR was confirmed as a molecular sponge of miR-544a. We further validated that miR-544a facilitated proliferation and invasion, and miR-544a could reverse TINCR-mediated anti-proliferation and anti-invasion effect in lung cancer cells. TINCR acted as a competing endogenous RNA (ceRNA) to sequester miR-544a from its target gene FBXW7. Finally, FBXW7 suppressed proliferation and invasion, and FBXW7 knockdown abolished the inhibition of TINCR on proliferation and invasion in lung cancer cells.TINCR suppressed proliferation and invasion through regulating miR-544a/FBXW7 axis in lung cancer, indicating that it might be a potential target for the therapy of lung cancer.
    Dokumententyp:
    Referenz
    Produkbestellnummer:
    17-700
    Produktbezeichnung:
    Magna RIP™ RNA-Binding Protein Immunoprecipitation Kit

  • Pre-clinical efficacy of PU-H71, a novel HSP90 inhibitor, alone and in combination with bortezomib in Ewing sarcoma. 24388362

    Ewing sarcoma is characterized by multiple deregulated pathways that mediate cell survival and proliferation. Heat shock protein 90 (HSP90) is a critical component of the multi-chaperone complexes that regulate the disposition and activity of a large number of proteins involved in cell-signaling systems. We tested the efficacy of PU-H71, a novel HSP90 inhibitor in Ewing sarcoma cell lines, primary samples, benign mesenchymal stromal cells and hematopoietic stem cells. We performed cell cycle analysis, clonogenic assay, immunoblot analysis and reverse phase protein array in Ewing cell lines and in vivo experiments in NSG and nude mice using the A673 cell line. We noted a significant therapeutic window in the activity of PU-H71 against Ewing cell lines and benign cells. PU-H71 treatment resulted in G2/M phase arrest. Exposure to PU-H71 resulted in depletion of critical proteins including AKT, pERK, RAF-1, c-MYC, c-KIT, IGF1R, hTERT and EWS-FLI1 in Ewing cell lines. Our results indicated that Ewing sarcoma tumor growth and the metastatic burden were significantly reduced in the mice injected with PU-H71 compared to the control mice. We also investigated the effects of bortezomib, a proteasome inhibitor, alone and in combination with PU-H71 in Ewing sarcoma. Combination index (CI)-Fa plots and normalized isobolograms indicated synergism between PU-H71 and bortezomib. Ewing sarcoma xenografts were significantly inhibited when mice were treated with the combination compared to vehicle or either drug alone. This provides a strong rationale for clinical evaluation of PU-H71 alone and in combination with bortezomib in Ewing sarcoma.
    Dokumententyp:
    Referenz
    Produkbestellnummer:
    05-184

  • Long non-protein coding RNA DANCR functions as a competing endogenous RNA to regulate osteoarthritis progression via miR-577/SphK2 axis. 29678573

    Long noncoding RNAs (lncRNAs) have been known to be involved in multiple diverse diseases, including osteoarthritis (OA). This study aimed to explore the role of differentiation antagonizing non-protein coding RNA (DANCR) in OA and identify the potential molecular mechanisms. The expression of DANCR in cartilage samples from patients with OA was detected using quantitative reverse transcription-polymerase chain reaction. The effects of DANCR on the viability of OA chondrocytes and apoptosis were explored using cell counting kit 8 assay and flow cytometry assay, respectively. Additionally, the interaction among DANCR, miR-577, and SphK2 was explored using dual-luciferase reporter and RIP assays. The present study found that DANCR was significantly upregulated in patients with OA. Functional assays demonstrated that DANCR inhibition suppressed the proliferation of OA chondrocytes and induced cell apoptosis. The study also showed that DANCR acted as a competitive endogenous RNA to sponge miR-577, which targeted the mRNA of SphK2 to regulate the survival of OA chondrocytes. In conclusion, the study revealed that lncRNA DANCR might promote the proliferation of OA chondrocytes and reduce apoptosis through the miR-577/SphK2 axis. Thus, lncRNA DANCR might be considered as a potential therapeutic target for OA treatment.
    Dokumententyp:
    Referenz
    Produkbestellnummer:
    17-701
    Produktbezeichnung:
    EZ-Magna RIP™ RNA-Binding Protein Immunoprecipitation Kit

  • Development and evaluation of NucliSens basic kit NASBA for diagnosis of parainfluenza virus infection with 'end-point' and 'real-time' detection. 12609681

    New methods for the detection of human parainfluenza viruses (HPIVs) were developed. These were based on nucleic acid sequence-based amplification (NASBA) and utilised the NucliSens Basic Kit. Primers and probes were selected from the haemagglutinin neuraminidase (HN) gene of HPIV1, HPIV2 and HPIV3, and from the phosphoprotein (P) of HPIV4a and -4b. Synthetic RNA, titrated control virus stocks and respiratory specimens (n=44) were utilised to evaluate performance of the assays. Detection of NASBA products was by probe hybridisation and electrochemiluminescence (ECL) ('end-point' detection) or using molecular beacons ('real-time' detection). The assays using ECL detection proved to be both sensitive and specific. Typically, less than or equal to 100 RNA copies or one TCID(50) input was detectable with no cross-reaction between the specific HPIV assays and other respiratory viruses. Results for clinical samples were concordant with those obtained by 'conventional' procedures by classical viral diagnostic methods. 'Real-time' detection utilised probes specific for either HPIV1 or HPIV3 with similar performance characteristics to the assays with 'end-point' detection. The feasibility of multiplexing targets together was confirmed using a combined HPIV1 and HPIV3 assay with good results for ECL and molecular beacon detection on control material and clinical samples.
    Dokumententyp:
    Referenz
    Produkbestellnummer:
    5004
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