Expression of neddylation‑related proteins in melanoma cell lines and the effect of neddylation on melanoma proliferation

Cheng,Fang; He,Runzhi; Zhang,Lei; Li,Hui; Zhang,Wei; Ji,Xiaolin; Kong,Fanting; Sun,Jianfang; Chen,Shubo

doi:10.3892/ol.2014.1953

Expression of neddylation‑related proteins in melanoma cell lines and the effect of neddylation on melanoma proliferation

Authors:
- Fang Cheng
- Runzhi He
- Lei Zhang
- Hui Li
- Wei Zhang
- Xiaolin Ji
- Fanting Kong
- Jianfang Sun
- Shubo Chen
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Affiliations: Department of Dermatology, Affiliated Xingtai People's Hospital of Hebei Medical University, Xingtai, Hebei 054001, P.R. China, Department of Neurosurgery, Affiliated Xingtai People's Hospital of Hebei Medical University, Xingtai, Hebei 054001, P.R. China, Dermatology Hospital of Jiangxi Province, Nanchang, Jiangxi 330000, P.R. China, Department of Neurosurgery, Affiliated Xingtai People's Hospital of Hebei Medical University, Xingtai, Hebei 054001, P.R. China, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, Jiangsu 210042, P.R. China, Department of Surgical Urology, Affiliated Xingtai People's Hospital of Hebei Medical University, Xingtai, Hebei 054001, P.R. China
Published online on: March 7, 2014 https://doi.org/10.3892/ol.2014.1953
Pages: 1645-1650

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Abstract

Neddylation promotes the process of ubiquitination, which plays a critical role in the degradation of numerous proteins, including cell cycle and apoptosis regulators. In our previous study, an increase in neddylation was identified in melanoma cell lines. In the present study, the upregulation of neddylation was detected in melanoma tissues which confirmed the results of our previous study on melanoma cell lines. To explore the mechanism by which the process of neddylation was increased, the enzymes that regulate the process were investigated. These neddylation‑related regulatory enzymes are potential targets for melanoma therapy. Downregulation of UBA3, a subunit of the E1 enzyme, by RNA interference caused cell cycle arrest at G0/G1 in the M14 cell line. In addition, cyclin D expression declined, whereas p27, p21 and bax expression increased. These findings suggest that interfering with the neddylation pathway may decrease the proliferation of melanoma through the modulation of cell cycle regulators and apoptosis promoters.

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