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  3. Single-cell transcriptomics reveals BMP4-BMPR2 signaling promotes radiation resistance in hematopoietic stem cells following injury

Single-cell transcriptomics reveals BMP4-BMPR2 signaling promotes radiation resistance in hematopoietic stem cells following injury

  • Nat Commun. 2025 Jul 1;16(1):5470. doi: 10.1038/s41467-025-60557-z.
Yanhua Li # 1 2,  Yunxing Li # 3,  Bowen Zhang # 3,  Jiahui Zhao # 3 4,  Jinhua Qin 3,  Siao Jiang 3 4,  Yunqiao Li 3,  Yanzhou Chen 3,  Jisheng Li 3,  Keyi Chen 3 4,  Yang Lv 3,  Tao Fan 3,  Zuyin Yu 3,  Hao Lu 3,  Cheng Quan 3,  Yiming Lu 5 6 7,  Xuetao Pei 8,  Gangqiao Zhou 9 10 11 12 13
Affiliations

Affiliations

  • 1 Beijing Institute of Radiation Medicine, Beijing, P.R. China. shirlylyh@126.com.
  • 2 College of Chemistry & Materials Science, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Hebei University, Baoding, Hebei Province, P.R. China. shirlylyh@126.com.
  • 3 Beijing Institute of Radiation Medicine, Beijing, P.R. China.
  • 4 College of Chemistry & Materials Science, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Hebei University, Baoding, Hebei Province, P.R. China.
  • 5 Beijing Institute of Radiation Medicine, Beijing, P.R. China. luymnet@126.com.
  • 6 College of Chemistry & Materials Science, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Hebei University, Baoding, Hebei Province, P.R. China. luymnet@126.com.
  • 7 State Key Laboratory of Medical Proteomics, National Center for Protein Sciences at Beijing, Beijing Institute of Radiation Medicine, Beijing, P.R. China. luymnet@126.com.
  • 8 Beijing Institute of Radiation Medicine, Beijing, P.R. China. peixt@nic.bmi.ac.cn.
  • 9 Beijing Institute of Radiation Medicine, Beijing, P.R. China. zhougq114@126.com.
  • 10 College of Chemistry & Materials Science, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Hebei University, Baoding, Hebei Province, P.R. China. zhougq114@126.com.
  • 11 State Key Laboratory of Medical Proteomics, National Center for Protein Sciences at Beijing, Beijing Institute of Radiation Medicine, Beijing, P.R. China. zhougq114@126.com.
  • 12 Collaborative Innovation Center for Personalized Cancer Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu Province, P.R. China. zhougq114@126.com.
  • 13 College of Life Sciences, Anhui Medical University, Hefei, Anhui Province, P.R. China. zhougq114@126.com.
  • # Contributed equally.
PMID: 40595466 DOI: 10.1038/s41467-025-60557-z
Abstract

High doses of ionizing radiation (IR) cause severe damage to the hematopoietic system. However, the heterogeneity of hematopoietic stem and progenitor cells (HSPCs) in response to IR stress remains largely uncharacterized. Here, we present a dynamic single cell transcriptomic landscape and elucidate the complex crosstalk between HSPCs and the bone marrow (BM) microenvironment during IR-induced regeneration process. We reveal that BMP4 signaling in HSPCs confers IR resistance, and a single administration of BMP4 or SB4 can rescue mice from the IR-induced mortality. Furthermore, we identify BMPR2+ HSCs as a radiation resistant subset, displaying distinct epigenetic landscapes from BMPR2- HSCs under radiation stress. BMPR2+ HSCs sustain a strong self-renewal capacity primarily by reducing the H3K27me3 modification on the Nrf2 gene in response to radiation stress. In Nrf2 knockout mice, we demonstrate that Nrf2 is a critical downstream functional gene for BMP4-BMPR2 signaling on HSCs to resist IR-induced damage. Collectively, we provide insights into the molecular intricacies underlying HSPC heterogeneity and BM niche after radiation exposure, and we uncover that BMP4-BMPR2 signaling may serve as a promising target for developing innovative and effective intervention strategies to mitigate IR-induced hematopoietic injury.

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