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Published September 28, 2004 | public
Journal Article

Association of antigens to ISCOMATRIX™ adjuvant using metal chelation leads to improved CTL responses

Abstract

The association of antigen with ISCOMATRIX™ adjuvant has been shown to be important for the optimal induction of cytotoxic T lymphocyte (CTL) responses. Here, we describe a simple broadly applicable method for associating recombinant proteins with hexa-histidine tags to ISCOMATRIX™ adjuvant utilising metal-affinity chelating interactions. The metal chelation binding step can be performed in a wide range of buffers, including commonly used denaturants such as urea, which makes it an ideal strategy for formulating proteins which are otherwise insoluble. Following association of protein with the chelating ISCOMATRIX™ adjuvant, the denaturant can be removed. Further, we show enhanced CTL responses with a protein-associated chelating ISCOMATRIX™ vaccine compared to a non-associated ISCOMATRIX™ vaccine.

Additional Information

© 2004 Elsevier Ltd. Received 22 December 2003, Revised 4 February 2004, Accepted 31 March 2004, Available online 27 April 2004. The authors thank H. Elmer and P. Schoofs for the provision of E6E7HH.We also thank R. Harris, J. Yanni, A. Coulter and S. Camuglia for assistance with formulation analysis, R. Hamilton who performed the electron microscopy and D. Airey who prepared graphs.

Additional details

Created:
August 22, 2023
Modified:
October 18, 2023