Nuclear NAD+ homeostasis governed by NMNAT1 prevents apoptosis of acute myeloid leukemia stem cells

Xiangguo Shi, Yajian Jiang, Ayumi Kitano, Tianyuan Hu, Rebecca L. Murdaugh, Yuan Li, Kevin A. Hoegenauer, Rui Chen, Koichi Takahashi, Daisuke Nakada

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Metabolic dysregulation underlies malignant phenotypes attributed to cancer stem cells, such as unlimited proliferation and differentiation blockade. Here, we demonstrate that NAD+ metabolism enables acute myeloid leukemia (AML) to evade apoptosis, another hallmark of cancer stem cells. We integrated whole-genome CRISPR screening and pan-cancer genetic dependency mapping to identify NAMPT and NMNAT1 as AML dependencies governing NAD+ biosynthesis. While both NAMPT and NMNAT1 were required for AML, the presence of NAD+ precursors bypassed the dependence of AML on NAMPT but not NMNAT1, pointing to NMNAT1 as a gatekeeper of NAD+ biosynthesis. Deletion of NMNAT1 reduced nuclear NAD+, activated p53, and increased venetoclax sensitivity. Conversely, increased NAD+ biosynthesis promoted venetoclax resistance. Unlike leukemia stem cells (LSCs) in both murine and human AML xenograft models, NMNAT1 was dispensable for hematopoietic stem cells and hematopoiesis. Our findings identify NMNAT1 as a previously unidentified therapeutic target that maintains NAD+ for AML progression and chemoresistance.

Original languageEnglish (US)
Article numbereabf3895
JournalScience Advances
Issue number30
StatePublished - Jul 2021

All Science Journal Classification (ASJC) codes

  • General

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