DKC1 serves as a potential prognostic biomarker for human clear cell renal cell carcinoma and promotes its proliferation, migration and invasion via the NF‑κB pathway

  • Authors:
    • Meng Zhang
    • Yu Pan
    • Ranran Jiang
    • Pingfu Hou
    • Haixia Shan
    • Fang Chen
    • Tao Jiang
    • Jin Bai
    • Junnian Zheng
  • View Affiliations

  • Published online on: June 11, 2018     https://doi.org/10.3892/or.2018.6484
  • Pages: 968-978
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

DKC1, an X‑linked gene encoding dyskerin at Xq28, is a crucial component of the telomerase complex and is indispensable for normal telomere function and the post‑­transcriptional modification of precursor rRNA. It has been revealed to exert diverse biological functions and prognostic values in numerous types of cancers. Our present study was aimed at examining DKC1 expression in normal renal tissues and clear cell renal cell carcinoma (ccRCC) samples and the prognostic value of DKC1 in ccRCC. We examined DKC1 protein expression levels in tissue microarrays including 307 cases of ccRCC tissues and in 75 pairs of ccRCC and paracancerous tissues with immunohistochemistry. The percentage of DKC1 expression in ccRCC (61.3%) was markedly higher than that in paracancerous tissues (34.7%) (P=0.001). Positive DKC1 expression tends to significantly be associated with unfavorable clinicopathological characteristics such as tumor diameter >7 cm (P=0.002) and tumor‑node‑metastasis (TNM) stage III or IV (P<0.001). Multivariate COX analysis revealed that positive DKC1 expression was an independent unfavorable factor for prognosis of ccRCC patients [hazard ratio (HR)=1.932, 95% CI, 1.290‑2.893, P=0.001 for 5‑year overall survival; HR=1.778, 95% CI,1.150‑2.748, P=0.010 for disease‑free survival]. In the PROGgeneV2 platform, we also found that ccRCC patients with high DKC1 mRNA expression had a poorer prognosis than patients with low DKC1 expression in The Cancer Genome Atlas (TCGA). Furthermore, we found that knockdown of DKC1 inhibited proliferation, migration and invasion of ccRCC through regulation of the NF‑κB/MMP‑2 signaling pathway in vitro. We also demonstrated that DKC1 regulated ccRCC proliferation and the expression of NF‑κB‑p65 and MMP‑2 in vivo. In summary, the expression of DKC1 was upregulated in ccRCC, which was associated with unfavorable clinicopathological characteristics and DKC1 may act as an independent prognostic indicator of ccRCC patients.
View Figures
View References

Related Articles

Journal Cover

August-2018
Volume 40 Issue 2

Print ISSN: 1021-335X
Online ISSN:1791-2431

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Zhang M, Pan Y, Jiang R, Hou P, Shan H, Chen F, Jiang T, Bai J and Zheng J: DKC1 serves as a potential prognostic biomarker for human clear cell renal cell carcinoma and promotes its proliferation, migration and invasion via the NF‑κB pathway. Oncol Rep 40: 968-978, 2018
APA
Zhang, M., Pan, Y., Jiang, R., Hou, P., Shan, H., Chen, F. ... Zheng, J. (2018). DKC1 serves as a potential prognostic biomarker for human clear cell renal cell carcinoma and promotes its proliferation, migration and invasion via the NF‑κB pathway. Oncology Reports, 40, 968-978. https://doi.org/10.3892/or.2018.6484
MLA
Zhang, M., Pan, Y., Jiang, R., Hou, P., Shan, H., Chen, F., Jiang, T., Bai, J., Zheng, J."DKC1 serves as a potential prognostic biomarker for human clear cell renal cell carcinoma and promotes its proliferation, migration and invasion via the NF‑κB pathway". Oncology Reports 40.2 (2018): 968-978.
Chicago
Zhang, M., Pan, Y., Jiang, R., Hou, P., Shan, H., Chen, F., Jiang, T., Bai, J., Zheng, J."DKC1 serves as a potential prognostic biomarker for human clear cell renal cell carcinoma and promotes its proliferation, migration and invasion via the NF‑κB pathway". Oncology Reports 40, no. 2 (2018): 968-978. https://doi.org/10.3892/or.2018.6484