Increasing the Tumoricidal Activity of Daunomycin-pHPMA Conjugates Using Vitamin B12 as a Targeting Agent


  • Gregory Russell-Jones Access Pharmaceuticals Australia Pty Ltd. Roseville, NSW, Australia 2069
  • Kirsten McTavish Access Pharmaceuticals Australia Pty Ltd. Roseville, NSW, Australia 2069
  • John McEwan Access Pharmaceuticals Australia Pty Ltd. Roseville, NSW, Australia 2069
  • Bruce Thurmond Access Pharmaceuticals Inc, Dallas, Tx



Vitamin B12, cyanocobalamin, cancer targeting, HPMA, daunomycin.


 Many different types of tumour have previously been shown to over-express cell-surface receptors involved in the uptake of Vitamin B12 (VB12). We have examined the potential of using VB12 as a targeting agent for the delivery of pHPMA-conjugated daunomycin in four murine tumour models. VB12-targeted-duanomycin-HPMA conjugates were found to increase both the number of survivors and the survival time of tumour-bearing mice. The data indicate that VB12 may be highly effective in enhancing the efficacy of polymer-bound cytotoxins, particularly in those tumours that over-express receptors involved in vitamin B12 uptake.


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How to Cite

Gregory Russell-Jones, Kirsten McTavish, John McEwan, & Bruce Thurmond. (2012). Increasing the Tumoricidal Activity of Daunomycin-pHPMA Conjugates Using Vitamin B12 as a Targeting Agent . Journal of Cancer Research Updates, 1(2), 203–211.