Cited by 68Effects of Radiation ExposureHematopoietic Stem Cell TransplantationMesenchymal stem cell research

Mn(III) meso-tetrakis-(N-ethylpyridinium-2-yl) porphyrin mitigates total body irradiation-induced long-term bone marrow suppression.

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Li, Hongliang, Wang, Yong, Pazhanisamy, Senthil K., Shao, Lijian, Batinic-Haberle, Ines, Meng, Aimin, Zhou, Daohong·2011·Free Radical Biology and Medicine

Abstract

Our recent studies showed that total body irradiation (TBI) induces long-term bone marrow (BM) suppression in part by induction of hematopoietic stem cell (HSC) senescence through reactive oxygen species (ROS). In this study, we examined if Mn(III) meso-tetrakis-(N-ethylpyridinium-2-yl) porphyrin (MnTE), a superoxide dismutase mimetic and potent antioxidant, can mitigate TBI-induced long-term BM injury in a mouse model. Our results showed that post-TBI treatment with MnTE significantly inhibited the increases in ROS production and DNA damage in HSCs and the reduction in HSC frequency and clonogenic function induced by TBI. In fact, the clonogenic function of HSCs from irradiated mice after MnTE treatment was comparable to that of HSCs from normal controls on a per-HSC basis, suggesting that MnTE treatment inhibited the induction of HSC senescence by TBI. This suggestion is supported by the finding that MnTE treatment also reduced the expression of p16(Ink4a) (p16) mRNA in HSCs induced by TBI and improved the long-term and multilineage engraftment of irradiated HSCs after transplantation. Therefore, the results from this study demonstrate that MnTE has the potential to be used as a therapeutic agent to mitigate TBI-induced long-term BM suppression by inhibiting ionizing radiation-induced HSC senescence through the ROS-p16 pathway.

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  1. [35]Jackson IL G.-F.B.B.-H.I.P.S.Z.Y.D.M.a.V.Z Hyperthermia enhances the antiangiogenic effect of metalloporphyrin mimetic of superoxide dismutase 2007 24th Annual Meeting of the European Society for Hyperthermic Oncology Prague, Czech Republic. Ref Type: Conference Proceeding

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Authors
Li, H., Wang, Y., Pazhanisamy, S. K., Shao, L., Batinic-Haberle, I., Meng, A., & Zhou, D.
Affiliations
  • Medical University of South Carolina (US)
  • Chinese Academy of Medical Sciences & Peking Union Medical College (CN)
Corresponding author
Zhou, Daohong
Venue
Free Radical Biology and Medicine
Publisher
Elsevier BV
Published
2011-07
Volume
51
Issue
1
Pages
30-37
ISSN
0891-5849 (ISSN-L)
OpenAlex
W2058302375
Cited by
68
References
46
Citations by year
2025: 3 · 2024: 1 · 2023: 2 · 2022: 2 · 2021: 2 · 2020: 2 · 2019: 9 · 2018: 6 · 2017: 6 · 2016: 3 · 2015: 10 · 2014: 7 · 2013: 7 · 2012: 5
FWCI
5.38
Type
journal article
Language
en
Open access
Locations
  • Free Radical Biology and Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Medical University of South Carolina
  • National Cancer Institute (R01CA122023, R01CA086860)
  • National Institute of Allergy and Infectious Diseases (R01AI080421)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Effects of Radiation Exposure
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
Keywords
MnTe, total body irradiation, myelosuppression, reactive oxygen species, p16INK4a, superoxide dismutase mimetic, antioxidants, DNA damage, engraftment
MeSH terms
Animals, Antioxidants, Bone Marrow, Flow Cytometry, Hematopoietic Stem Cells, Male, Metalloporphyrins, Mice, Inbred C57BL, Whole-Body Irradiation, Bone Marrow Transplantation, Cellular Senescence, Reactive Oxygen Species, Oxidative Stress, Cyclin-Dependent Kinase Inhibitor p16, Mice

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