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  • 1
    Keywords: APOPTOSIS ; CANCER ; CANCER CELLS ; CELLS ; EXPRESSION ; INHIBITOR ; carcinoma ; CELL ; Germany ; INHIBITION ; THERAPY ; LUNG-CANCER ; GENE ; PROTEIN ; SAMPLE ; SAMPLES ; TISSUE ; kidney ; FAMILY ; tumour ; ALPHA ; TARGET ; ISOFORM ; immunohistochemistry ; DIFFERENCE ; resistance ; CANCER-CELLS ; BETA ; STRATEGIES ; IMMUNOTHERAPY ; NORMAL TISSUE ; sensitivity ; OVEREXPRESSION ; CANCER-THERAPY ; protein expression ; TRANSCRIPTS ; CELL CARCINOMA ; renal cell carcinoma ; ONCOLOGY ; ADULT ; RE ; THERAPIES ; INCREASE ; cancer therapy ; REAL-TIME ; SURVIVIN ; NUCLEAR ; ML-IAP ; inhibitor of apoptosis ; apoptotic ; quantitative ; livin/ML-IAP ; APOPTOSIS PROTEIN ; CYTOPLASM ; tumour therapy ; Livin/ML-IAP/KIAP ; MELANOMA INHIBITOR
    Abstract: The antiapoptotic Livin/ML-IAP gene has recently gained much attention as a potential new target for cancer therapy. Reports indicating that livin is expressed almost exclusively in tumours, but not in the corresponding normal tissue, suggested that the targeted inhibition of livin may present a novel tumour-specific therapeutic strategy. Here, we compared the expression of livin in renal cell carcinoma and in non-tumorous adult kidney tissue by quantitative real-time reverse transcription-PCR, immunoblotting, and immunohistochemistry. We found that livin expression was significantly increased in tumours (P=0.0077), but was also clearly detectable in non-tumorous adult kidney. Transcripts encoding Livin isoforms alpha and beta were found in both renal cell carcinoma and normal tissue, without obvious qualitative differences. Livin protein in renal cell carcinoma samples exhibited cytoplasmic and/or nuclear staining. In non-tumorous kidney tissue, Livin protein expression was only detectable in specific cell types and restricted to the cytoplasm. Thus, whereas the relative overexpression of livin in renal cell carcinoma indicates that it may still represent a therapeutic target to increase the apoptotic sensitivity of kidney cancer cells, this strategy is likely to be not tumour-specific
    Type of Publication: Journal article published
    PubMed ID: 17968430
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  • 2
    Keywords: APOPTOSIS ; CANCER ; CELLS ; EXPRESSION ; proliferation ; tumor ; carcinoma ; CELL ; CELL-PROLIFERATION ; Germany ; human ; INHIBITION ; THERAPY ; HEPATOCELLULAR-CARCINOMA ; GENE ; RNA ; SAMPLE ; SAMPLES ; TISSUE ; LINES ; kidney ; primary ; CELL-LINES ; TARGET ; virus ; MALIGNANCIES ; resistance ; CARCINOMA CELLS ; PROSTATE-CANCER ; CELL-LINE ; CARCINOMA-CELLS ; HOMOLOG ; STRATEGIES ; METHYLTRANSFERASE ACTIVITY ; CANCER-THERAPY ; CELL CARCINOMA ; renal cell carcinoma ; MALIGNANCY ; ONCOLOGY ; ENHANCER ; ADULT ; RE ; INTERFERENCE ; RNA INTERFERENCE ; THERAPIES ; cancer therapy ; cell proliferation ; TUMOR TISSUE ; LEVEL ; RNAi ; USA ; tumor therapy ; RENAL-CELL ; GROUP PROTEIN EZH2 ; POLYCOMB REPRESSION ; HISTONE H3 ; AGGRESSIVE BREAST-CANCER ; enhancer of zeste homolog 2 (EZH2) ; ZESTE HOMOLOG-2
    Abstract: The enhancer of zeste homolog 2 (EZH2) gene has been recently linked to human malignancies where it may serve as a new target for cancer therapy. Here, we analyzed EZH2 expression in primary renal cell carcinoma (RCC) specimens and in nontumorous tissue samples from adult kidney. EZH2 transcripts were detectable in all RCC specimens examined. Expression levels were significantly higher in tumor tissue (p 〈= 0.0001) than in samples from normal adult kidney. Moreover, inhibition of endogenous EZH2 expression in RCC cell lines by RNA interference (RNAi) led to reduced proliferation and increased apoptosis in RCC cells. These data show that EZH2 is overexpressed in RCC. Furthermore, they indicate that the EZH2 gene plays a role for both the proliferation and the apoptosis resistance of RCC cells. Targeted inhibition of EZH2 could therefore represent a novel strategy to improve the therapeutic response of RCC. (C) 2008 Wilely-Liss, Inc
    Type of Publication: Journal article published
    PubMed ID: 18623083
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