By tracking how cells handle nitrogen, scientists might be able to spot when and how they switch on different ways of building key genetic building blocks, depending on what state the cell is in.

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Nitrogen metabolism profiling reveals cell state-specific pyrimidine synthesis pathway choice

Cross-Sectional Study

Animal & In Vitro

The study shows that a new method for tracking nitrogen in cells can tell the difference between how different types of cells make DNA building blocks, depending on their state.

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Scientists found a new way to track 30 different building blocks in cells at once, helping them see how cells use nitrogen in real time — and they spotted new patterns in how cells build DNA parts depending on their state.

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Simple cells make their own pyrimidines from scratch or recycle them, but more mature cells mostly just recycle them—even though they could make new ones. This seems to be a basic rule in both animals and humans, including in tumors.

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