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Updated: Aug 4, 2026

Analysis of SAMHD1 Restriction by Flow Cytometry in Human Myeloid U937 Cells
Published on: June 13, 2021
Gene editing of SAMHD1 in macrophage-like cells reveals complex relationships between SAMHD1 phospho-regulation,
Moritz Schüssler1, Kerstin Schott1, Nina Verena Fuchs1
1Host-Pathogen Interactions, Paul-Ehrlich-Institut , Langen, Germany.
Importance:
We introduce BLaER1 cells as an alternative myeloid cell model in combination with CRISPR/Cas9-mediated gene editing to study the influence of sterile α motif and HD domain-containing protein 1 (SAMHD1) T592 phosphorylation on anti-viral restriction and the control of cellular dNTP levels in an endogenous, physiologically relevant context. A proper understanding of the mechanism of the anti-viral function of SAMHD1 will provide attractive strategies aiming at selectively manipulating SAMHD1 without affecting other cellular functions. Even more, our toolkit may inspire further genetic analysis and investigation of restriction factors inhibiting retroviruses and their cellular function and regulation, leading to a deeper understanding of intrinsic anti-viral immunity.

