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GEF-H1 upon microtubule destabilization drives ZBP1-dependent necroptosis

Abstract

It remains unclear for the role of microtubule-associated proteins or signaling in necroptosis. Here, we conducted high-throughput screening using a cytoskeleton compound library and identified that release of guanine nucleotide exchange factor-H1 (GEF-H1) upon microtubule destabilization triggers necroptosis. Immunoprecipitation and mass spectrometry revealed that GEF-H1 interacts with DExH-Box helicase 9 (DHX9) and protein-protein interaction network analysis indicated DHX9 is associated with necroptosis. Deficiency of either GEF-H1 or DHX9 significantly inhibits necroptosis. Mechanistically, upon microtubule destabilization, GEF-H1 is translocated to the nucleus and recruits DHX9 and RNA Pol II to the Z-DNA binding protein 1 (ZBP1) promoter region. Subsequently, increasing expression of ZBP1 drives necroptosis. In addition, GEF-H1 signaling upon microtubule destabilization also plays a positive role in lipopolysaccharide-induced cell death and inflammation. Collectively, these findings uncover an important role for GEF-H1 signaling in necroptosis and inflammation.

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Fig. 1: Microtubule destabilization triggers necroptosis.
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Fig. 2: Inhibition of GEF-H1 restrains microtubule destabilization-mediated cell death.
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Fig. 3: Knockout of GEF-H1 prominently inhibits necroptosis.
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Fig. 4: Crosstalk between GEF-H1 and DHX9 triggers necroptosis.
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Fig. 5: GEF-H1 interacts with DHX9 to synergistically upregulate ZBP1 expression.
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Fig. 6: PH and Zinc-finger domain are required for GEF-H1-mediated ZBP1 expression.
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Fig. 7: LPS activates GEF-H1 signaling and induces inflammation in vitro.
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Fig. 8: GEF-H1 deficiency alleviates tissue damage and lethality induced by LPS and hvKP.
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Data availability

Data supporting the findings of this study are available from the corresponding author upon reasonable request. Original uncropped western blots are available as Supplementary Material.

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Acknowledgements

We are grateful to Prof. Jiahuai Han (Xiamen University) for providing experimental materials.

Funding

National Natural Science Foundation of China (82272237, 82430083, 82072149), Basic Research Program of Jiangsu (BK20250108) and Natural Science Foundation of Jiangsu Province (CXZX202217).

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Authors

Contributions

XW Wu, JA Ren, Y Zhao, and XF Zhang designed this research; XF Zhang, XH Li, YY Yang, J Wu, and QJ Liu conducted the research; XF Zhang, LT Deng, and JJ Huang performed the statistical analysis; XF Zhang, XW Wu, JA Ren, and Y Zhao wrote and revised the paper.

Corresponding authors

Correspondence to Yun Zhao, Jianan Ren or Xiuwen Wu.

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The authors declare no competing interests.

Ethics approval and consent to participate

All procedures for animal experiments were approved by Jinling Hospital Animal Care Committee. The collection of human intestinal tissue was approved by the Institutional Review Board Ethics Committee at Jinling Hospital. Before collecting samples, informed consent was obtained from all human participants. All methods were performed in accordance with the relevant guidelines and regulations.

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Zhang, X., Li, X., Yang, Y. et al. GEF-H1 upon microtubule destabilization drives ZBP1-dependent necroptosis. Cell Death Differ (2026). https://doi.org/10.1038/s41418-026-01711-y

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