Modernatx, Inc.

Yuxun Wang

Stephane Bancel

Susan Whoriskey

William Joseph Issa

Divakar Ramakrishnan

Antonin De Fougerolles

The present invention describes methods of removing DNA from an RNA transcript during the mRNA production process. The method embodies procedures for obtaining an in vitro transcription product, and removing any DNA from the product. The DNA can be removed by adding either free DNase or a resin containing immobilized DNase to the product, and recovering the RNA transcript. Alternatively, the DNA template used in the in vitro transcription reaction is labeled. After transcription, the product is applied to a resin that is configured to bind the label, and the RNA transcript is recovered. To detect whether any residual impurities are left in the RNA transcript product, the product is subjected to nuclease digestion and subsequently to liquid chromatography-tandem mass spectrometry analysis to quantitate any residual DNA. The present invention demonstrates efficient and effective methods of isolating an RNA transcript from an in vitro transcription product.

Removal of DNA fragments in mRNA production process

The invention relates to compositions and methods for the design, evolution, preparation, and/or manufacture of enzymes for use with polynucleotides, primary transcripts and mmRNA molecules.

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Cambridge, MA, United States of America

Yuxun Wang