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N. Gankhuyag



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    MA16 - Novel Strategies in Targeted Therapy (ID 407)

    • Event: WCLC 2016
    • Type: Mini Oral Session
    • Track: Chemotherapy/Targeted Therapy/Immunotherapy
    • Presentations: 1
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      MA16.01 - Targeted Gene Therapy for Tobacco Carcinogen-Induced Lung Cancer (ID 3968)

      14:20 - 14:26  |  Author(s): N. Gankhuyag

      • Abstract
      • Presentation
      • Slides

      Background:
      Rab25, a member of Rab family of small GTPases, is associated with progression of various types of human cancer including lung cancer that is the leading cause of cancer-associated deaths around the globe.

      Methods:
      Figure 1In this study, we report the gene therapeutic effect of short hairpin Rab25 (shRab25) on 4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK)-induced lung tumorgenesis in female A/J mice. Initially, Mice (six-week-old) were injected with single dose of NNK (2 mg/0.1 ml saline/mouse) by intraperitoneal injection to induce the tumor. 8 weeks later, shRab25 was delivered with GPT-SPE (glycerol propoxylate triacrylate (GPT) and spermine) complex into tobacco-induced lung cancer models through a nose-only inhalation system twice a week for 2 month.



      Results:
      Figure 1Remarkably, aerosol-delivered shRab25 significantly decreased the expression level of Rab25 and other prominent apoptosis related proteins in female A/J mice. The apoptosis in these mice were determined by detecting the expression level of Bcl-2, PCNA, Bax and further confirmed by TUNEL assay.



      Conclusion:
      Our results strongly confirm the tumorigenic role of Rab25 in tobacco carcinogen induced-lung cancer and hence demonstrate aerosol delivery of shRab25 as a therapeutic target for lung cancer treatment.

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