Can any of you tell me of a source other than Alfacell Corporation for the 12 kDa protein homologous to pancreatic RNase A that is isolated from amphibian oocytes and is known by several names, including P-30 Protein, Pannon and Onconase? I would like to use this protein in my research because it can block cell cycle progression at a point that is well-defined. That is, it halts progression at the Cdk4/6 restriction point by causing reduced cyclin D and increased Cdk inhibitor expression. Alfacell Corporation is currently using what they call onconase in Phase III clinical trials for cancer therapy. Getting a compound that is being tested in IND research would require more steps than just purchasing from an alternative source, so I am asking if anyone out there knows of one. Dr. Kevin G. Waddick Hughes Institute 2657 Patton Road St. Paul, MN 55113
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