title: MDA-7/IL-24 inhibits cell survival by inducing apoptosis in nasopharyngeal carcinoma.
abstract: OBJECTIVE
  Nasopharyngeal carcinoma (NPC) is the most common primary malignancy of the nasopharynx. Due to its local recurrence and distant metastasis, conventional therapy is usually ineffective. MDA-7/IL-24 (melanoma differentiation associated gene 7), a member of the IL10 family of cytokines, inhibits growth of various human cancer cells, but the underlying mechanism is largely unknown. There is no report of mda-7 in nasopharyngeal carcinoma. We aimed to investigate the role of MDA-7/IL-24 in NPC.
  
  
  METHODS
  Immune defective adenoviral vector carrying the gene was produced, infected NPC CNE cells and observed its growth, cell proliferation, apoptosis and the effect of combination with chemotherapy.
  
  
  RESULTS
  The results showed that (1) MDA-7/IL-24 inhibited NPC CNE cell growth and survival; (2) mda-7 induced cell apoptosis and death; (3) MDA-7/IL-24 in collaboration with chemotherapy induced cell apoptosis significantly; (4) MDA-7/IL-24 induced cell apoptosis by down-regulation of anti-apoptosis molecules such as Bcl-2 and Bcl-xl and up-regulation of caspase 3.
  
  
  CONCLUSIONS
  The results suggested that MDA-7/IL-24 had obvious therapeutic effect in NPC cells. It is verified that adenovirus mediated MDA-7/IL-24 represents a potentially important new approach to NPC therapy.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, No. 452 Hospital 1 Chengdu 610021, China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Lin
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Changzheng Hospital, Second Military Medical University Shanghai 200003, China.
authors.forename: Haibin
authors.initials: H
authors.lastname: Liu
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Changzheng Hospital, Second Military Medical University Shanghai 200003, China.
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Changzheng Hospital, Second Military Medical University Shanghai 200003, China.
authors.forename: Qiubei
authors.initials: Q
authors.lastname: Zhu
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Changzheng Hospital, Second Military Medical University Shanghai 200003, China.
authors.forename: Huanhai
authors.initials: H
authors.lastname: Liu
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Changzheng Hospital, Second Military Medical University Shanghai 200003, China.
authors.forename: Zhenghua
authors.initials: Z
authors.lastname: Ji
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Changzheng Hospital, Second Military Medical University Shanghai 200003, China.
authors.forename: Jianchun
authors.initials: J
authors.lastname: Liao
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Changzheng Hospital, Second Military Medical University Shanghai 200003, China.
authors.forename: Juntian
authors.initials: J
authors.lastname: Lang
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Changzheng Hospital, Second Military Medical University Shanghai 200003, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Wu
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Changzheng Hospital, Second Military Medical University Shanghai 200003, China.
authors.forename: Jingping
authors.initials: J
authors.lastname: Fan
keywords: MDA-7/IL-24; cell survival; nasopharyngeal carcinoma