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miR-34c is down regulated in prostate cancer and exerts tumor suppressive functions.

Hagman, Zandra (författare)
Lund University,Lunds universitet,Klinisk kemi, Malmö,Forskargrupper vid Lunds universitet,Clinical Chemistry, Malmö,Lund University Research Groups
Larne, Olivia (författare)
Lund University,Lunds universitet,Klinisk kemi, Malmö,Forskargrupper vid Lunds universitet,Clinical Chemistry, Malmö,Lund University Research Groups
Edsjö, Anders (författare)
Lund University,Lunds universitet,Institutionen för translationell medicin,Medicinska fakulteten,Department of Translational Medicine,Faculty of Medicine
visa fler...
Bjartell, Anders (författare)
Lund University,Lunds universitet,Urologisk cancerforskning, Malmö,Forskargrupper vid Lunds universitet,Urological cancer, Malmö,Lund University Research Groups
Ehrnström, Roy (författare)
Lund University,Lunds universitet,Patologi, Malmö,Forskargrupper vid Lunds universitet,Pathology, Malmö,Lund University Research Groups
Ulmert, David (författare)
Lund University,Lunds universitet,Urologisk cancerforskning, Malmö,Forskargrupper vid Lunds universitet,Klinisk kemi, Malmö,Urological cancer, Malmö,Lund University Research Groups,Clinical Chemistry, Malmö
Lilja, Hans (författare)
Lund University,Lunds universitet,Klinisk kemi, Malmö,Forskargrupper vid Lunds universitet,Clinical Chemistry, Malmö,Lund University Research Groups
Ceder, Yvonne (författare)
Lund University,Lunds universitet,Klinisk kemi, Malmö,Forskargrupper vid Lunds universitet,Clinical Chemistry, Malmö,Lund University Research Groups
visa färre...
 (creator_code:org_t)
2010-02-16
2010
Engelska.
Ingår i: International Journal of Cancer. - : Wiley. - 0020-7136. ; 127:12, s. 2768-2776
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • MicroRNAs (miRNAs) are small non-coding RNAs that post-transcriptionally regulate gene expression. There have been several reports of miRNA deregulation in prostate cancer and the biological evidence for an involvement of miRNAs in prostate tumorigenesis is increasing. In this study, we show that miR-34c is downregulated in prostate cancer (p = 0.0005) by performing qRT-PCR on 49 TURPs from prostate cancer patients compared to 25 from patients with benign prostatic hyperplasia. The miR-34c expression was found to inversely correlate to aggressiveness of the tumour, WHO grade, PSA levels and occurrence of metastases. Furthermore, a Kaplan-Meier analysis of patient survival based on miR-34c expression levels divided into low (<50(th) percentile) and high (> 50(th) percentile) expression, significantly divides the patients into high risk and low risk patients (p = 0.0003, long-rank test). The phenotypic effects of miR-34c deregulation were studied in prostate cell lines, where ectopic expression of miR-34c decreased cell growth, due to both a decrease in cellular proliferation rate and an increase in apoptosis. In concordance to this, miR-34c was found to negatively regulate the oncogenes E2F3 and BCL-2, which stimulates proliferation and suppress apoptosis in prostate cancer cells respectively. Reversely, we could also show that blocking miR-34c in vitro increases cell growth. Further, ectopic expression of miR-34c was found to suppress migration and invasion. Our findings provide new insight into the role of miR-34c in the prostate, exhibiting tumor suppressing effects on proliferation, apoptosis and invasiveness. (c) 2010 UICC.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Cancer och onkologi (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Cancer and Oncology (hsv//eng)

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