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60Coγ induction improves the protective effect of Acetobacter pasteurianus against ionizing radiation in mice

  • Applied Microbial and Cell Physiology
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Abstract

Exposure to ionizing radiation (IR) tends to cause serious health concerns. Thus, radioprotective agents are vital for the population exposed to radiation. As microorganisms have the advantages of fast reproduction and no geographical restrictions, direct microbe-based and environmental induction compounds are thriving radioprotectants resources. Oxidative system and oxidase in Acetobacter pasteurianus are unique and intriguing, the radioprotective effect of the cell-free extract from A. pasteurianus (APE) and 60Coγ-treated extract (IRE) were comparatively investigated in the present study. The survival rate of A. pasteurianus with IRE addition was 149.1% in H2O2 damage test, while that with APE was only 10.4%. The viability of 60Coγ-treated AML-12 cells was increased by 18.8% with IRE addition, yet APE showed no significant radioprotective effect. Moreover, in 60Coγ-treated mice, IRE could significantly protect the white blood cell, improve the liver index, and attenuate the injuries of immune organs in mice. Administration of IRE significantly raised the activities of superoxide dismutase (SOD) and reduced the products of lipid peroxidation. These results clarified that gavage with APE and IRE presented notable antioxidant and radioprotective efficacy. A. pasteurianus showed appealing potential to be novel radioprotective bioagents and 60Coγ treatment on microbe could be a new method for the development of better radioprotectant.

Key points

60Coγ induction could improve the radioprotective effect of APE.

• IRE protected white blood cell in mice under IR.

• IRE products have broad application prospects in radioprotection based on microbes.

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All data generated or analyzed during this study are included in this published article (and its supplementary information files).

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Funding

We are grateful for the Natural Science Foundation of Henan Province for Outstanding Youth (202300410365), the Program for Science & Technology Innovation Talents in Universities of Henan Province (22HASTIT037), the Key Scientific Research Projects of Higher Education Institutions in Henan Province (21A530006), the National Natural Science Foundation of China (81870093, 31900296), the Research Project of People’s Liberation Army (BX115C007, BFP20C006).

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Contributions

Z.J.Q and L.J.K designed and supervised the research, analyzed the data, and revised the manuscript. G.Y.H performed the experiments, analyzed the data, and wrote the manuscript. Y.J.J, Z.C.C, K.Q.Z, H.L.M, L.L.Z and J.S.R contributed new materials or analytical tools.

Corresponding authors

Correspondence to Jiaqing Zhu or Jike Lu.

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The authors declare no competing interests.

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All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.

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Gao, Y., Zhu, J., Zhao, C. et al. 60Coγ induction improves the protective effect of Acetobacter pasteurianus against ionizing radiation in mice. Appl Microbiol Biotechnol 105, 9285–9295 (2021). https://doi.org/10.1007/s00253-021-11664-6

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  • DOI: https://doi.org/10.1007/s00253-021-11664-6

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