2. Academic Validation
  3. Phagocyte extracellular traps formation contributes to host defense against Clostridium perfringens infection

Phagocyte extracellular traps formation contributes to host defense against Clostridium perfringens infection

  • Cytokine. 2023 Jun 18;169:156276. doi: 10.1016/j.cyto.2023.156276.
Yang Liu 1,  Jing Liang 2,  Jian-Wei Li 2,  Li-Hua Xing 2,  Fen-Xin Li 2,  Na Wang 2,  Yu-Jing Wu 2,  Yu-Ze Ma 2,  Zhao-Rui Xing 2,  Xue Jiang 2,  Xin-Yue Zhang 2,  Zheng-Xuan Lei 2,  Xiao Wang 3,  Shui-Xing Yu 4
Affiliations

Affiliations

  • 1 State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China; Animal Husbandry Institute, Agriculture and Animal Husbandry Academy of Inner Mongolia, Hohhot 010031, China.
  • 2 State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China.
  • 3 State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China. Electronic address: wangxiao@imu.edu.cn.
  • 4 State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot 010070, China. Electronic address: shuixingyu@imu.edu.cn.
PMID: 37339556 DOI: 10.1016/j.cyto.2023.156276
Abstract

Clostridium perfringens (C. perfringens) is an important Gram-positive anaerobic spore-forming pathogen that provokes life-threatening gas gangrene and acute enterotoxaemia, although it colonizes as a component of the symbiotic bacteria in humans and Animals. However, the mechanisms by which C. perfringens is cleared from the host remains poorly understood, thereby impeding the development of novel strategies for control this Infection. Here, we uncover a beneficial effect of extracellular traps (ETs) formation on Bacterial killing and clearance by phagocytes. C. perfringens strain ATCC13124, and wild-type isolates CP1 and CP3 markedly trigger ETs formation in macrophages and neutrophils. As expected, visualization of DNA decorated with histone, myeloperoxidase (MPO) and neutrophils Elastase (NE) in C. perfringens-triggered classical ETs structures. Notably, the bacteria-induced ETs formation is an ERK1/2-, P38 MAPK-, store-operated calcium entry (SOCE)-, NADPH oxidase-, histone-, NE-, and MPO-dependent process, and is independent of LDH activity. Meanwhile, the defect of bactericidal activity is mediated by impairing ETs formation in phagocytes. Moreover, In vivo studies indicated that degradation of ETs by DNase I administration leads to a defect in the protection against experimental gas gangrene, with higher mortality rates, exacerbated tissue damage, and more Bacterial colonization. Together, these results suggest that phagocyte ETs formation is essential for the host defense against C. perfringens Infection.

Keywords

Bacterial killing; Clostridium perfringens; Extracellular traps; Gas gangrene; Phagocytes.

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