MicroRNAs make for safer cancer treatments

Sunday, October 26, 2008 - 14:28 in Biology & Nature

Viruses -- long regarded solely as disease agents -- now are being used in therapies for cancer. Concerns over the safety of these so-called oncolytic viruses stem from their potential to damage healthy tissues. Now Mayo Clinic researchers have discovered a way of controlling the viruses behind potential cancer therapeutics. They are engineering the virus's genetic sequence, using microRNAs to restrict them to specific tissues. The microRNAs destabilize the virus's genome, making it impossible for the virus to run amok. The discovery is reported in the current issue of Nature Medicine.

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