Britanin relieves ferroptosis-mediated myocardial ischaemia/reperfusion damage by upregulating GPX4 through activation of AMPK/GSK3β/Nrf2 signalling
Context Ferroptosis was described as an important contributor to the myocardial ischaemia/reperfusion (MIR) injury, and britanin (Bri) was reported to exert antitumor and anti-inflammatory activities. Objective Our study explores the effect and mechanism of Bri on MIR damage. Materials and methods T...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-01-01
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| Series: | Pharmaceutical Biology |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/13880209.2021.2007269 |
| _version_ | 1818459241907748864 |
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| author | Haoyang Lu Hui Xiao Manyu Dai Yangcheng Xue Ren Zhao |
| author_facet | Haoyang Lu Hui Xiao Manyu Dai Yangcheng Xue Ren Zhao |
| author_sort | Haoyang Lu |
| collection | DOAJ |
| description | Context Ferroptosis was described as an important contributor to the myocardial ischaemia/reperfusion (MIR) injury, and britanin (Bri) was reported to exert antitumor and anti-inflammatory activities. Objective Our study explores the effect and mechanism of Bri on MIR damage. Materials and methods The rat model of MIR was established by ligation of the left anterior descending coronary artery. Male Sprague–Dawley (SD) rats were divided into three groups: sham group (n = 6), MIR group (n = 6) and MIR + Bri group (n = 6; 50 mg/kg). Rats were intragastrically pre-treated with Bri or normal saline once daily for 3 days. To further verify the role and mechanism of Bri, H9C2 cells were subjected to hypoxia plus reoxygenation (H/R) to induce the in vitro model of MIR. Results Compared with MIR rats, Bri significantly decreased infarct area (22.50% vs. 38.67%), myocardial apoptosis (23.00% vs. 41.5%), creatine phosphokinase (0.57 U/mL vs. 0.76 U/mL), and lactate dehydrogenase levels (3.18 U/mL vs. 5.17 U/mL), concomitant with alleviation of ferroptosis. Mechanistically, Bri treatment induced the activation of the adenosine monophosphate activated protein kinase (AMPK)/glycogen synthase kinase 3β (GSK3β)/nuclear factor erythroid 2-related factor 2 (Nrf2) pathway in vivo. In addition, the AMPK/GSK3β/Nrf2 pathway participated in the regulation of glutathione peroxidase 4 (GPX4) expression, and silencing of Nrf2 attenuated the effect of Bri on H/R-induced cell injury. Discussion and conclusions Bri protected against ferroptosis-mediated MIR damage by upregulating GPX4 through activation of the AMPK/GSK3β/Nrf2 signalling, suggesting that Bri might become a novel therapeutic agent for MIR. |
| first_indexed | 2024-12-14T23:11:14Z |
| format | Article |
| id | doaj.art-266ab82e0a7545abb409d96536db1577 |
| institution | Directory Open Access Journal |
| issn | 1388-0209 1744-5116 |
| language | English |
| last_indexed | 2024-12-14T23:11:14Z |
| publishDate | 2022-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Pharmaceutical Biology |
| spelling | doaj.art-266ab82e0a7545abb409d96536db15772022-12-21T22:44:11ZengTaylor & Francis GroupPharmaceutical Biology1388-02091744-51162022-01-01601384510.1080/13880209.2021.20072692007269Britanin relieves ferroptosis-mediated myocardial ischaemia/reperfusion damage by upregulating GPX4 through activation of AMPK/GSK3β/Nrf2 signallingHaoyang Lu0Hui Xiao1Manyu Dai2Yangcheng Xue3Ren Zhao4Department of Cardiovascular Medicine, the First Affiliated Hospital of Anhui Medical UniversityDepartment of Cardiovascular Medicine, the First Affiliated Hospital of Anhui Medical UniversityDepartment of Cardiovascular Medicine, the First Affiliated Hospital of Anhui Medical UniversityDepartment of Cardiovascular Medicine, the First Affiliated Hospital of Anhui Medical UniversityDepartment of Cardiovascular Medicine, the First Affiliated Hospital of Anhui Medical UniversityContext Ferroptosis was described as an important contributor to the myocardial ischaemia/reperfusion (MIR) injury, and britanin (Bri) was reported to exert antitumor and anti-inflammatory activities. Objective Our study explores the effect and mechanism of Bri on MIR damage. Materials and methods The rat model of MIR was established by ligation of the left anterior descending coronary artery. Male Sprague–Dawley (SD) rats were divided into three groups: sham group (n = 6), MIR group (n = 6) and MIR + Bri group (n = 6; 50 mg/kg). Rats were intragastrically pre-treated with Bri or normal saline once daily for 3 days. To further verify the role and mechanism of Bri, H9C2 cells were subjected to hypoxia plus reoxygenation (H/R) to induce the in vitro model of MIR. Results Compared with MIR rats, Bri significantly decreased infarct area (22.50% vs. 38.67%), myocardial apoptosis (23.00% vs. 41.5%), creatine phosphokinase (0.57 U/mL vs. 0.76 U/mL), and lactate dehydrogenase levels (3.18 U/mL vs. 5.17 U/mL), concomitant with alleviation of ferroptosis. Mechanistically, Bri treatment induced the activation of the adenosine monophosphate activated protein kinase (AMPK)/glycogen synthase kinase 3β (GSK3β)/nuclear factor erythroid 2-related factor 2 (Nrf2) pathway in vivo. In addition, the AMPK/GSK3β/Nrf2 pathway participated in the regulation of glutathione peroxidase 4 (GPX4) expression, and silencing of Nrf2 attenuated the effect of Bri on H/R-induced cell injury. Discussion and conclusions Bri protected against ferroptosis-mediated MIR damage by upregulating GPX4 through activation of the AMPK/GSK3β/Nrf2 signalling, suggesting that Bri might become a novel therapeutic agent for MIR.http://dx.doi.org/10.1080/13880209.2021.2007269myocardial infarctionhypoxia-reoxygenation injuryironapoptosisoxidative stress |
| spellingShingle | Haoyang Lu Hui Xiao Manyu Dai Yangcheng Xue Ren Zhao Britanin relieves ferroptosis-mediated myocardial ischaemia/reperfusion damage by upregulating GPX4 through activation of AMPK/GSK3β/Nrf2 signalling Pharmaceutical Biology myocardial infarction hypoxia-reoxygenation injury iron apoptosis oxidative stress |
| title | Britanin relieves ferroptosis-mediated myocardial ischaemia/reperfusion damage by upregulating GPX4 through activation of AMPK/GSK3β/Nrf2 signalling |
| title_full | Britanin relieves ferroptosis-mediated myocardial ischaemia/reperfusion damage by upregulating GPX4 through activation of AMPK/GSK3β/Nrf2 signalling |
| title_fullStr | Britanin relieves ferroptosis-mediated myocardial ischaemia/reperfusion damage by upregulating GPX4 through activation of AMPK/GSK3β/Nrf2 signalling |
| title_full_unstemmed | Britanin relieves ferroptosis-mediated myocardial ischaemia/reperfusion damage by upregulating GPX4 through activation of AMPK/GSK3β/Nrf2 signalling |
| title_short | Britanin relieves ferroptosis-mediated myocardial ischaemia/reperfusion damage by upregulating GPX4 through activation of AMPK/GSK3β/Nrf2 signalling |
| title_sort | britanin relieves ferroptosis mediated myocardial ischaemia reperfusion damage by upregulating gpx4 through activation of ampk gsk3β nrf2 signalling |
| topic | myocardial infarction hypoxia-reoxygenation injury iron apoptosis oxidative stress |
| url | http://dx.doi.org/10.1080/13880209.2021.2007269 |
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