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Targeting NRF2 Sensitizes Esophageal Adenocarcinoma Cells to Cisplatin through Induction of Ferroptosis and Apoptosis

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单位: [1]Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA. [2]Sylvester Comprehensive Cancer Center, Miami, FL 33136, USA. [3]Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China. [4]Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232, USA. [5]Department of Veterans Affairs, Miami Healthcare System, Miami, FL 33136, USA.
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关键词: esophageal adenocarcinoma NRF2 Brusatol lipid peroxidation ferroptosis

摘要:
Esophageal adenocarcinoma (EAC), the predominant type of esophageal cancer in the United States, develops through Barrett's esophagus (BE)-dysplasia-carcinoma cascade. Gastroesophageal reflux disease, where acidic bile salts refluxate into the esophagus, is the main risk factor for the development of BE and its progression to EAC. The NFE2-related factor 2 (NRF2) is the master cellular antioxidant regulator. We detected high NRF2 protein levels in the EAC cell lines and primary tissues. Knockdown of NRF2 significantly enhanced acidic bile salt-induced oxidative stress, DNA damage, and inhibited EAC cell growth. Brusatol, an NRF2 inhibitor, significantly inhibited NRF2 transcriptional activity and downregulated the NRF2 target genes. We discovered that in addition to inducing apoptosis, Brusatol alone or in combination with cisplatin (CDDP) induced significant lipid peroxidation and ferroptosis, as evidenced by reduced xCT and GPX4 expression, two known ferroptosis markers. The combination of Brusatol and CDDP significantly inhibited EAC tumor xenograft growth in vivo and confirmed the in vitro data showing ferroptosis as an important mechanism in the tumors treated with Brusatol or Brusatol and CDDP combination. Our data support the role of NRF2 in protecting against stress-induced apoptosis and ferroptosis in EACs. Targeting NRF2 in combination with platinum therapy can be an effective strategy for eliminating cancer cells in EAC.

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出版当年[2021]版:
大类 | 2 区 医学
小类 | 2 区 生化与分子生物学 2 区 药物化学 2 区 食品科技
最新[2025]版:
大类 | 2 区 医学
小类 | 2 区 生化与分子生物学 2 区 药物化学 2 区 食品科技
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出版当年[2020]版:
Q1 CHEMISTRY, MEDICINAL Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Q1 FOOD SCIENCE & TECHNOLOGY
最新[2023]版:
Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Q1 CHEMISTRY, MEDICINAL Q1 FOOD SCIENCE & TECHNOLOGY

影响因子: 最新[2023版] 最新五年平均[2021-2025] 出版当年[2020版] 出版当年五年平均[2016-2020] 出版前一年[2019版] 出版后一年[2021版]

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第一作者单位: [1]Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
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通讯机构: [1]Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA. [2]Sylvester Comprehensive Cancer Center, Miami, FL 33136, USA. [5]Department of Veterans Affairs, Miami Healthcare System, Miami, FL 33136, USA.
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