Lenalidomide improves H<sub>2</sub>O<sub>2</sub>‑induced PC12 cell injury by blocking the Notch signaling pathway

Lv,Zheng; Yin,Shao; Cheng,Ziguan; Wang,Kekai

doi:10.3892/etm.2022.11348

Lenalidomide improves H₂O₂‑induced PC12 cell injury by blocking the Notch signaling pathway

Authors:
- Zheng Lv
- Shao Yin
- Ziguan Cheng
- Kekai Wang
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Affiliations: Department of Orthopedics, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 610032, P.R. China, Anorectal Department, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 610032, P.R. China
Published online on: April 29, 2022 https://doi.org/10.3892/etm.2022.11348
Article Number: 421
Copyright: © Lv et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Lenalidomide (LEN) has been reported to exert antitumor, anti‑inflammatory, anti‑angiogenic and immunomodulatory activities. However, the effects of LEN in spinal cord injury (SCI) are yet to be fully elucidated. The present study was conducted to identify whether LEN has a healing effect on SCI and to determine the underlying mechanism of action. The viability of H₂O₂‑stimulated PC12 cells was detected using a Cell Counting Kit‑8 assay. The viability of PC12 cells treated with LEN was examined with an MTT assay. The level of lactate dehydrogenase (LDH) was measured using an LDH assay kit, while the levels of the oxidative stress‑related factors malondialdehyde, superoxide dismutase, glutathione peroxidase and catalase in PC12 cells were determined using commercial kits. Oxidative stress‑related proteins were examined via western blotting. PC12 cell apoptosis was observed using a TUNEL assay, while apoptosis markers and Notch signaling‑related proteins were examined via western blotting. The results of the present study demonstrated that H₂O₂ decreased PC12 cell viability in a dose‑dependent manner. However, treatment with LEN significantly improved the viability of H₂O₂‑stimulated PC12 cells and alleviated H₂O₂‑induced cytotoxic injury. Additionally, LEN treatment inhibited the oxidative stress and apoptosis induced by H₂O₂ in PC12 cells. Notch signaling‑related protein expression was downregulated after LEN treatment in H₂O₂‑stimulated PC12 cells. In addition, a Notch agonist reversed the effects of LEN on H₂O₂‑induced oxidative stress and PC12 cell apoptosis. In summary, it was demonstrated that LEN alleviated the H₂O₂‑induced injury of PC12 cells by blocking the Notch signaling pathway, suggesting the value of applying LEN to the treatment of SCI.

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