Our Scientific Applications Support team has assembled a list of frequently asked questions to help you find answers quickly. Filter using one or more categories to focus on specific topics, or use the search bar to perform a text search.
Do modifications affect the stability or shelf life of oligos?
For the modifications tested at this point, the pattern of degradation seen for modified oligos is similar to that for standard oligos. Those are:
For optimal stability, oligos that are to be stored long term should be stored frozen, at –20°C. If the oligos are going to be resuspended, storage in a TE buffer (10 mM Tris, 0.1 mM EDTA, pH 7.5–8.0; such as IDTE) is better than using water (non-DEPC treated). The impact from the type of storage medium used is marginal at -20°C, but becomes more important at higher temperatures. It is ideal to store oligos in the dark. Exposure to UV light should be avoided, and ambient lab light should be minimized, particularly for some types of modified oligos.
Please see the Technical Report, Oligonucleotide Stability Studyfor data on oligonucleotide storage and a more thorough explanation.
Studies are currently in progress with selected modifications and further specific information will be available in the future.