alexa Detection methods of possible prion contaminants in collagen and gelatin.


Journal of Microbial & Biochemical Technology

Author(s): Nemoto T, Horiuchi M, Ishiguro N, Shinagawa M

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Abstract We describe methods for the preparation of collagen and gelatin samples to detect possible prion contaminants using Western blotting of a major component of prions, PrPSc. A commercially available collagen solution containing 2\% athero-collagen was spiked with rodent adapted scrapie prion and used as the prion-contaminating collagen. The methods developed center on the enzymatic reduction of the collagen solution viscosity with protease treatments and on the concentration of the prion from the protease-digests with polyethylene glycol-#6000 and NaCl. Recovery of the spiked prion as a partially protease-resistant core fragment of PrPSc fluctuated from 30\% to 46\% of the input amount.
This article was published in Arch Virol and referenced in Journal of Microbial & Biochemical Technology

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