Carbon monoxide releasing molecule-3 alleviates neuron death after spinal cord injury via inflammasome regulationResearch in context

Gang Zheng; Yu Zhan; Haoli Wang; Zucheng Luo; Fanghong Zheng; Yifei Zhou; Yaosen Wu; Sheng Wang; Yan Wu; Guangheng Xiang; Cong Xu; Huazi Xu; Naifeng Tian; Xiaolei Zhang

EBioMedicine (Feb 2019)

Carbon monoxide releasing molecule-3 alleviates neuron death after spinal cord injury via inflammasome regulationResearch in context

Gang Zheng,
Yu Zhan,
Haoli Wang,
Zucheng Luo,
Fanghong Zheng,
Yifei Zhou,
Yaosen Wu,
Sheng Wang,
Yan Wu,
Guangheng Xiang,
Cong Xu,
Huazi Xu,
Naifeng Tian,
Xiaolei Zhang

Affiliations

Gang Zheng: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China
Yu Zhan: Department of Chemoradiation Oncology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
Haoli Wang: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China
Zucheng Luo: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China
Fanghong Zheng: The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
Yifei Zhou: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
Yaosen Wu: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
Sheng Wang: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
Yan Wu: Department of Orthopaedics, The Second Affiliated Hospital, School of Medicine, Zhejiang University, 310058 Zhejiang Province, China
Guangheng Xiang: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China
Cong Xu: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China
Huazi Xu: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Corresponding authors.
Naifeng Tian: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Corresponding authors.
Xiaolei Zhang: Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou 325000, Zhejiang Province, China; The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China; Chinese Orthopaedic Regenerative Medicine Society, Hangzhou 310058, Zhejiang Province, China; Corresponding authors.

Journal volume & issue: Vol. 40
pp. 643 – 654

Abstract

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Background: Genetic overexpression or pharmacological activation of heme oxygenase (HO) are identified as potential therapeutic target for spinal cord injury (SCI); however, the role of carbon monoxide (CO), which is a major product of haem degenerated by HO, in SCI remains unknown. Applying hemin or chemicals which may regulate HO expression or activity to increase CO production are inadequate to elaborate the direct role of CO. Here, we assessed the effect of CO releasing molecule-3 (CORM-3), the classical donor of CO, in SCI and explained its possible protective mechanism. Methods: Rat SCI model was performed with a vascular clip (30 g) compressing at T9 vertebral level for 1 min and CO was delivered immediately after SCI by CORM-3. The neurological deficits and neuron survival were assessed. Inflammasome and inositol-requiring enzyme 1 (IRE1) pathway were measured by western blot and immunofluorescence. For in vitro study, oxygen glucose deprivation (OGD) simulated the SCI-inflammasome change in cultured the primary neurons. Findings: CORM-3 suppressed inflammasome signaling and pyroptosis occurrence, which consequently alleviated neuron death and improved motor functional recovery following SCI. As a pivotal sensor involving in endoplasmic reticulum stress-medicated inflammasome signaling, IRE1 and its downstream X-box binding protein 1 (XBP1) were activated in SCI tissues as well as in OGD neurons; while inhibition of IRE1 by STF-083010 in SCI rats or by si-RNA in OGD neurons suppressed inflammasome signaling and pyroptosis. Interestingly, the SCI/OGD-stimulated IRE1 activation was attenuated by CORM-3 treatment. Interpretations: CO may alleviate neuron death and improve motor functional recovery in SCI through IRE1 regulation, and administration of CO could be a promising therapeutic strategy for SCI. Keywords: Spinal cord injury, Neuron death, Inflammasome, Carbon monoxide

Published in EBioMedicine

ISSN: 2352-3964 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Medicine: Medicine (General)
Website: http://www.journals.elsevier.com/ebiomedicine/

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