Current Cancer Drug Targets

Ruiwen Zhang 
Texas Tech University Health Sciences Center
1300 Coulter Drive
Amarillo, TX 79106
USA

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Antitumor Effects of Interferon-Alpha on Cell Growth and Metastasis in Human Nasopharyngeal Carcinoma

Author(s): X. Liu, J. Lu, M.-L. He, Z. Li, B. Zhang, L.-H. Zhou, Q. Li, G. Li, L. Wang, W.-D. Tian, Y. Peng, X.-P. Li.

Abstract:

Nasopharyngeal carcinoma (NPC) is a highly malignant and frequently metastasized tumor, and the prognosis is very poor when distant metastases occur. Recently, immunotherapy is becoming a promising therapeutic approach. Interferon-α (IFN-α) represents the cytokines exhibiting the longest record of use in clinical oncology. In this study, we examined the antitumor effects of IFN-α1b on NPC. The results showed that recombinant human IFN-α1b (hIFN-α1b) suppressed cell growth, induced a G1-phase cell cycle arrest in vitro, increased the expression of p16 and pRb, and decreased the expression of CCND1 and CDK6. In vivo analyses showed that either recombinant adeno-associated virus (rAAV)-IFN-α1b or hIFN-α1b treatment inhibited tumor growth and metastasis, reduced intratumoral microvessel density, increased cell apoptosis and necrosis, and induced prolonged survival. Notably, rAAV-IFN-α1b or hIFN-α1b treatment led to significantly higher serum levels of IL-12 and GM-CSF in mice compared to respective controls. Our findings suggest that IFN-α1b acts as a multifunctional antitumor agent in NPC, which may have important therapeutic implications.

Keywords: Cell growth, cytokine, immunotherapy, interferon-α1b, metastasis, nasopharyngeal carcinoma

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Article Details

VOLUME: 12
ISSUE: 5
Year: 2012
Page: [561 - 570]
Pages: 10
DOI: 10.2174/156800912800673293
Price: $58