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Efficient Chromatin Removal in Viral Vector Manufacturing using Salt-Active Nucleases

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Introduction

Is your DNA Really Gone?

Most DNA removal strategies measure DNA concentration.

Studies suggest large chromatin structures can remain even when DNA digestion appears complete, creating hidden downstream processing challenges.

Assumption Reality
DNA digested ?Chromatin may still remain
DNA levels reduced ?Purification becomes more difficult
Process complete ?DSP burden increases
DNA removal confirmed ?Process efficiency can still suffer

The Impact of Residual Chromatin

Residual chromatin can remain after DNA digestion, creating purification challenges that may not be apparent from DNA concentration measurements alone. Research suggests that effective chromatin fragmentation can help simplify downstream processing and improve manufacturing efficiency.

The question is not just whether DNA has been digested, but whether chromatin has been removed.

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