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- Title
A GUTLESS ADENOVIRAL VECTOR EXPRESSING FULL-LENGTH ANTI-Her2 ANTIBODY.
- Authors
Jiang, Ming-Hong; Chen, Lin; Li, Lin-Fang; Wu, Hong-Ping; Jiang, Li-Hua; Qian, Yan-Zhen; Fang, Guo-En; Xue, Xu-Chao
- Abstract
1. Therapeutic monoclonal antibodies are increasingly being used in clinical cancer treatment, but their complex technology and high cost limit their use. Helper-dependent (HD) adenoviruses are among the most efficient and safe gene therapy vectors capable of mediating long-term expression. 2. Using Gateway (Invitrogen, San Diego, CA, USA) cloning technology, we constructed an HD–trastuzumab (TAb) plasmid carrying the full-length anti-HER2 antibody gene. Using an efficient recombinase, namely in vitro-evolved Flippase-expressing recombinase, to excise the helper virus packaging signal in producer cells, we developed a scalable HD vector production method. Antibody expression of HD-TAb in vitro was detected by ELISA and western blot. 3. The full-length antibody gene delivery system allowed for continuous production of a full-length antibody at a high concentration. Bioactive antibody macromolecules were generated via gene transfer in vitro. 4. In conclusion, HD adenoviral vectors can stably express a full-length antibody for prolonged periods without the difficulties associated with sophisticated antibody manufacture techniques and at a much lower cost. As a promising tool for gene therapy, this novel system can shorten the duration and reduce the expense of antibody development.
- Subjects
CANCER treatment; GENETIC engineering; MONOCLONAL antibodies; GENE therapy; ANTINEOPLASTIC agents
- Publication
Clinical & Experimental Pharmacology & Physiology, 2009, Vol 36, Issue 9, pe26
- ISSN
0305-1870
- Publication type
Article
- DOI
10.1111/j.1440-1681.2009.05175.x