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Wang C, Li YH, Yang ZT, Cheng NT, Tang HX, Xu M. The function and mechanism of microRNA-92a-3p in lipopolysaccharide-induced acute lung injury. Immunopharmacol Immunotoxicol 2021; 44:47-57. [PMID: 34783628 DOI: 10.1080/08923973.2021.2001497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVES Sepsis-associated acute lung injury (ALI) is a clinically severe respiratory disorder and remains the leading cause of multiple organ failure and mortality. Herein, we used lipopolysaccharide (LPS) to generate sepsis-induced ALI and try to explore the role and mechanism of microRNA-92a-3p (miR-92a-3p) in this process. METHODS Mice were intravenously injected with miR-92a-3p agomir, antagomir and negative controls for 3 consecutive days and then were intratracheally instillated by LPS (5 mg/kg) for 12 h. To knock down the endogenous A-kinase anchoring protein 1 (AKAP1), mice were intratracheally injected with recombinant adenovirus carrying the short hairpin RNA targeting AKAP1 (shAkap1) at 1 week before LPS administration. RESULTS miR-92a-3p level was significantly upregulated in the lungs by LPS injection. miR-92a-3p antagomir reduced LPS-induced intrapulmonary inflammation and oxidative stress, thereby preventing pulmonary injury and dysfunction. In contrast, miR-92a-3p agomir aggravated LPS-induced intrapulmonary inflammation, oxidative stress, pulmonary injury and dysfunction. Moreover, we reported that AKAP1 upregulation was required for the beneficial effects of miR-92a-3p antagomir, and that AKAP1 knockdown completely abolished the anti-inflammatory and antioxidant capacities of miR-92a-3p antagomir. CONCLUSION Our data identify that miR-92a-3p modulates LPS-induced intrapulmonary inflammation, oxidative stress and ALI via AKAP1 in mice.
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Affiliation(s)
- Cong Wang
- Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yang-Hao Li
- Department of Thoracic Surgery, Huangmei People's Hospital, Huanggang, China
| | - Ze-Tian Yang
- Department of Thoracic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Ni-Tao Cheng
- Department of Thoracic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - He-Xiao Tang
- Department of Thoracic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Ming Xu
- Department of Thoracic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
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MicroRNA-23a-5p Is Involved in the Regulation of Lipopolysaccharide-Induced Acute Lung Injury by Targeting HSP20/ASK1. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9942557. [PMID: 34422215 PMCID: PMC8376430 DOI: 10.1155/2021/9942557] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 07/19/2021] [Indexed: 12/12/2022]
Abstract
Inflammation and oxidative stress contribute to the progression of acute lung injury (ALI). MicroRNA-23a-5p (miR-23a-5p) has been reported to regulate inflammation and oxidative stress; however, its role in ALI is still poorly elucidated. Mice were intravenously treated with the miR-23a-5p antagomir, agomir, or the negative controls for 3 consecutive days and then received a single intratracheal injection of lipopolysaccharide (LPS, 5 mg/kg) to induce ALI. Pulmonary function, bronchoalveolar lavage fluids (BALFs), arterial blood gas, and molecular biomarkers associated with inflammation and oxidative stress were analyzed. In addition, murine peritoneal macrophages were isolated and treated with LPS to verify the role of miR-23a-5p in vitro. We detected an elevation of miR-23a-5p expression in the lungs from ALI mice. The miR-23a-5p antagomir was prevented, whereas the miR-23a-5p agomir aggravated inflammation, oxidative stress, lung tissue injury, and pulmonary dysfunction in LPS-treated mice. Besides, the miR-23a-5p antagomir also reduced the productions of proinflammatory cytokines and free radicals in LPS-treated primary macrophages, which were further augmented in cells following the miR-23a-5p agomir treatment. Additional findings demonstrated that the miR-23a-5p agomir exacerbated LPS-induced ALI via activating apoptosis signal-regulating kinase 1 (ASK1), and that pharmacological or genetic inhibition of ASK1 significantly repressed the deleterious effects of the miR-23a-5p agomir. Moreover, we proved that the miR-23a-5p agomir activated ASK1 via directly reducing heat shock protein 20 (HSP20) expression. miR-23a-5p is involved in the regulation of LPS-induced inflammation, oxidative stress, lung tissue injury, and pulmonary dysfunction by targeting HSP20/ASK1, and it is a valuable therapeutic candidate for the treatment of ALI.
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Bao C, Zhang J, Xian SY, Chen F. MicroRNA-670-3p suppresses ferroptosis of human glioblastoma cells through targeting ACSL4. Free Radic Res 2021; 55:853-864. [PMID: 34323631 DOI: 10.1080/10715762.2021.1962009] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Glioblastoma is one of the most frequent malignant tumors derived from the brain in adults with very poor prognosis. Ferroptosis is implicated in the initiation and progression of various tumors, including the glioblastoma. The present study aims to investigate the function of microRNA (miR)-670-3p in glioblastoma, and tries to demonstrate whether ferroptosis is involved in this process. Human glioblastoma cell lines, U87MG and A172, were transfected with the inhibitor, mimic and matched negative controls of miR-670-3p to manipulate intracellular miR-670-3p level. To validate the involvement of ferroptosis in miR-670-3p inhibitor-mediated tumor suppressive effects, ferrostain-1 and liproxstatin-1 were used to inhibit ferroptosis in the presence of miR-670-3p inhibitor. In addition, the small interfering RNA against acyl-CoA synthase long chain family member 4 (ACSL4) was used to knock down endogenous ACSL4 expression. To validate the combined effects between miR-670-3p inhibitor and temozolomide (TMZ), cells were pretreated with TMZ and then transfected with or without miR-670-3p inhibitor. miR-670-3p level was elevated in human glioblastoma, but decreased upon ferroptotic stimulation. miR-670-3p inhibitor suppressed, while miR-670-3p mimic promoted glioblastoma cell growth through modulating ferroptosis. Mechanistically, ACSL4 was required for the regulation on ferroptosis and growth of glioblastoma cells by miR-670-3p. Moreover, U87MG and A172 cells treated with miR-670-3p inhibitor showed an increased chemosensitivity to TMZ. We prove that miR-670-3p suppresses ferroptosis of human glioblastoma cells through targeting ACSL4, and that inhibiting miR-670-3p can be an alternative, at least adjuvant strategy to treat glioblastoma.
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Affiliation(s)
- Chong Bao
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jing Zhang
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Shu-Yue Xian
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Feng Chen
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan, China
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Guo C, Ye FX, Jian YH, Liu CH, Tu ZH, Yang DP. MicroRNA-214-5p aggravates sepsis-related acute kidney injury in mice. Drug Dev Res 2021; 83:339-350. [PMID: 34370322 DOI: 10.1002/ddr.21863] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/15/2021] [Accepted: 07/20/2021] [Indexed: 12/29/2022]
Abstract
Acute kidney injury (AKI) is a devastating comorbidity in sepsis and correlates with a very poor prognosis and increased mortality. Currently, we use lipopolysaccharide (LPS) to establish sepsis-related AKI and try to demonstrate the pathophysiological role of microRNA-214-5p (miR-214-5p) in this process. Mice were intravenously injected with the miR-214-5p agomir, antagomir or negative controls for three consecutive days and then received a single intraperitoneal injection of LPS (10 mg/kg) for 24 h to induce AKI. Besides, the Boston University mouse proximal tubular cell lines were stimulated with LPS (10 μg/ml) for 8 h to investigate the role of miR-214-5p in vitro. To inhibit adenosine monophosphate-activated protein kinase (AMPK), compound C (CpC) was used in vivo. For glucagon-like peptide-1 receptor (GLP-1R) silence, cells were transfected with the small interfering RNA against GLP-1R. miR-214-5p level was upregulated in LPS-treated kidneys and proximal tubular cell lines. The miR-214-5p antagomir reduced LPS-induced renal inflammation and oxidative stress, thereby preventing renal damage and dysfunction. In contrast, the miR-214-5p agomir aggravated LPS-induced inflammation, oxidative stress and AKI in vivo and in vitro. Mechanistically, we found that the miR-214-5p antagomir prevented septic AKI via activating AMPK and that CpC treatment completely abrogated its renoprotective effect in mice. Further detection showed that miR-214-5p directly bound to the 3'-untranslational region of GLP-1R to inhibit GLP-1R/AMPK axis. Our data identify miR-214-5p as a promising therapeutic candidate to treat sepsis-related AKI.
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Affiliation(s)
- Cheng Guo
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Fang-Xiong Ye
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yong-Hong Jian
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Chun-Hua Liu
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhi-Hui Tu
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Ding-Ping Yang
- Department of Nephrology, Renmin Hospital of Wuhan University, Wuhan, China
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Wei D, Ke YQ, Duan P, Zhou L, Wang CY, Cao P. MicroRNA-302a-3p induces ferroptosis of non-small cell lung cancer cells via targeting ferroportin. Free Radic Res 2021; 55:821-830. [PMID: 34181495 DOI: 10.1080/10715762.2021.1947503] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Ferroptosis is a newly described regulated form of cell death that contributes to the progression of non-small cell lung cancers (NSCLCs). MicroRNA-302a-3p (miR-302a-3p) plays critical roles in the tumorigenicity of different cancers; however, its function and underlying mechanism in ferroptosis and NSCLCs remain unclear. Human NSCLCs cells were incubated with miR-302a-3pmimic or inhibitor in the presence or absence of erastin or RSL3. Cell viability, colony numbers, lactate dehydrogenase (LDH) releases, lipid peroxidation and intracellular iron level were measured. Besides, the synergistic effects of cisplatin and paclitaxel with miR-302a-3p were determined. miR-302a-3p level was reduced in human NSCLCs cells and tissues. ThemiR-302a-3p mimic induced lipid peroxidation, iron overload and ferroptosis, thereby inhibiting cell growth and colony formation of NSCLCs cells. Conversely, the miR-302a-3p inhibitor block ederastin- or RSL3-related ferroptosis and tumor suppression. Additionally, we found that miR-302a-3p directly bound to the 3'-untranslational region of ferroportin to decrease its protein expression, and that ferroportin overexpression significantly prevented miR-302a-3p mimic-induced ferroptosis and tumor inhibition. Moreover, the miR-302a-3p mimic sensitized NSCLCs cells to cisplatin and paclitaxel chemotherapy. miR-302a-3p functions as a tumor inhibitor, at least partly, via targeting ferroportin to induce ferroptosis of NSCLCs.
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Affiliation(s)
- Dong Wei
- Department of Cardio-Thoracic Surgery, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei province, P.R.C
| | - Yao-Qi Ke
- Department of Respiratory Medicine, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, Hubei province, P.R.C
| | - Peng Duan
- Department of Obstetrics and Gynaecology, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei province, P.R.C
| | - Lei Zhou
- Department of Cardio-Thoracic Surgery, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei province, P.R.C
| | - Chang-Ying Wang
- Department of Oncology, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei Province, P.R.C
| | - Ping Cao
- Department of Oncology, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei Province, P.R.C
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Li W, Hou G, Lv J, Lin F, Song G, Li R. MicroRNA-30d-5p ameliorates lipopolysaccharide-induced acute lung injury via activating AMPKα. Immunopharmacol Immunotoxicol 2021; 43:431-442. [PMID: 34157933 DOI: 10.1080/08923973.2021.1933517] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVES Acute lung injury (ALI) is a devastating lung disease characterized by uncontrolled pulmonary inflammation and oxidative stress. Currently, no effective therapeutic strategies are available for ALI and its prognosis remains poor. The present study aims to investigate the role and potential mechanism of microRNA-30d-5p (miR-30d-5p) in the progression of ALI. METHODS Mice were intravenously treated with miR-30d-5p agomir, antagomir or their respective controls for 3 consecutive days and then were exposed to a single intratracheal injection of lipopolysaccharide (LPS) for 12 h at a dosage of 5 mg/kg to induce ALI. To inhibit adenosine monophosphate-activated protein kinase α (AMPKα) or phosphodiesterase 4 D (PDE4D), compound C (CpC) and rolipram were used. RESULTS miR-30d-5p expression in the lungs was significantly inhibited by LPS treatment. miR-30d-5p agomir significantly alleviated, while miR-30d-5p antagomir aggravated pulmonary inflammation, oxidative damage, and dysfunction in ALI mice. Besides, we found that miR-30d-5p agomir ameliorated LPS-induced ALI via activating AMPKα and that the inhibition of AMPKα by CpC completely abolished these beneficial effects of miR-30d-5p agomir. Further findings validated that PDE4D downregulation was required for the activation of AMPKα by miR-30d-5p agomir. CONCLUSION miR-30d-5p ameliorates LPS-induced ALI via activating AMPKα and it is a valuable therapeutic candidate in the treatment of ALI.
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Affiliation(s)
- Weixin Li
- Department of Pulmonary and Critical Care Medicine, The First People' s Hospital of Jiangxia District, Wuhan, China
| | - Guoqiang Hou
- Department of Thoracic Surgery, Yangxin People's Hospital, Huangshi, China
| | - Jianfa Lv
- Department of Thoracic Surgery, Hanchuan People's Hospital, Hanchuan, China
| | - Feng Lin
- Department of Thoracic Surgery, Macheng People's Hospital, Macheng, China
| | - Gan Song
- Department of Thoracic Surgery, Macheng People's Hospital, Macheng, China
| | - Ruiyun Li
- Department of Pulmonary and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, China
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Xiao Z, Zheng YB, Dao WX, Luo JF, Deng WH, Yan RC, Liu JS. MicroRNA-328-3p facilitates the progression of gastric cancer via KEAP1/NRF2 axis. Free Radic Res 2021; 55:720-730. [PMID: 34160338 DOI: 10.1080/10715762.2021.1923705] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Gastric cancer is a common lethal malignancy and causes great cancer-related mortality worldwide. MicroRNA (miR)-328-3p is implicated in the progression of various human cancers; however, its role and mechanism in the progression of gastric cancer remain unclear.Human gastric cancer cells were incubated with miR-328-3p mimic, inhibitor or the matched negative control. Cell viability, colony formation, migrative and invasive capacity, cell apoptosis and oxidative stress were measured. To clarify the involvement of nuclear factor-E2-related factor 2 (NRF2) and kelch-like ECH-associated protein 1 (KEAP1), small interfering RNA was used. miR-328-3p was upregulated in human gastric cancer cells and tissues, and its level positively correlated with the progression of gastric cancer. miR-328-3p promoted cell viability, colony formation, migration and invasion, thereby facilitating the progression of gastric cancer. miR-328-3p mimic reduced, while miR-328-3p inhibitor increased apoptosis and oxidative stress of human gastric cancer cells. Mechanistically, miR-328-3p upregulated NRF2 via targeting KEAP1to attenuate excessive free radical production and cell apoptosis. miR-328-3p functions as an oncogenic gene and inhibiting miR-328-3p may help to develop novel therapeutic strategies of human gastric cancer.
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Affiliation(s)
- Zhe Xiao
- Department of Gastrointestinal Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Yong-Bin Zheng
- Department of Gastrointestinal Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Wen-Xin Dao
- Department of Gastrointestinal Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Jian-Fei Luo
- Department of Gastrointestinal Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Wen-Hong Deng
- Department of Gastrointestinal Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Rui-Cheng Yan
- Department of Gastrointestinal Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Jia-Sheng Liu
- Department of Gastrointestinal Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
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Zhang X, Hu C, Yuan XP, Yuan YP, Song P, Kong CY, Teng T, Hu M, Xu SC, Ma ZG, Tang QZ. Osteocrin, a novel myokine, prevents diabetic cardiomyopathy via restoring proteasomal activity. Cell Death Dis 2021; 12:624. [PMID: 34135313 PMCID: PMC8209005 DOI: 10.1038/s41419-021-03922-2] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 06/08/2021] [Accepted: 06/09/2021] [Indexed: 02/06/2023]
Abstract
Proteasomal activity is compromised in diabetic hearts that contributes to proteotoxic stresses and cardiac dysfunction. Osteocrin (OSTN) acts as a novel exercise-responsive myokine and is implicated in various cardiac diseases. Herein, we aim to investigate the role and underlying molecular basis of OSTN in diabetic cardiomyopathy (DCM). Mice received a single intravenous injection of the cardiotrophic adeno-associated virus serotype 9 to overexpress OSTN in the heart and then were exposed to intraperitoneal injections of streptozotocin (STZ, 50 mg/kg) for consecutive 5 days to generate diabetic models. Neonatal rat cardiomyocytes were isolated and stimulated with high glucose to verify the role of OSTN in vitro. OSTN expression was reduced by protein kinase B/forkhead box O1 dephosphorylation in diabetic hearts, while its overexpression significantly attenuated cardiac injury and dysfunction in mice with STZ treatment. Besides, OSTN incubation prevented, whereas OSTN silence aggravated cardiomyocyte apoptosis and injury upon hyperglycemic stimulation in vitro. Mechanistically, OSTN treatment restored protein kinase G (PKG)-dependent proteasomal function, and PKG or proteasome inhibition abrogated the protective effects of OSTN in vivo and in vitro. Furthermore, OSTN replenishment was sufficient to prevent the progression of pre-established DCM and had synergistic cardioprotection with sildenafil. OSTN protects against DCM via restoring PKG-dependent proteasomal activity and it is a promising therapeutic target to treat DCM.
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Affiliation(s)
- Xin Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University, 430060, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, 430060, Wuhan, China
| | - Can Hu
- Department of Cardiology, Renmin Hospital of Wuhan University, 430060, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, 430060, Wuhan, China
| | - Xiao-Pin Yuan
- Department of Cardiology, Renmin Hospital of Wuhan University, 430060, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, 430060, Wuhan, China
| | - Yu-Pei Yuan
- Department of Cardiology, Renmin Hospital of Wuhan University, 430060, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, 430060, Wuhan, China
| | - Peng Song
- Department of Cardiology, Renmin Hospital of Wuhan University, 430060, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, 430060, Wuhan, China
| | - Chun-Yan Kong
- Department of Cardiology, Renmin Hospital of Wuhan University, 430060, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, 430060, Wuhan, China
| | - Teng Teng
- Department of Cardiology, Renmin Hospital of Wuhan University, 430060, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, 430060, Wuhan, China
| | - Min Hu
- Department of Cardiology, Renmin Hospital of Wuhan University, 430060, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, 430060, Wuhan, China
| | - Si-Chi Xu
- Department of Cardiology, Renmin Hospital of Wuhan University, 430060, Wuhan, China
- Hubei Key Laboratory of Metabolic and Chronic Diseases, 430060, Wuhan, China
| | - Zhen-Guo Ma
- Department of Cardiology, Renmin Hospital of Wuhan University, 430060, Wuhan, China.
- Hubei Key Laboratory of Metabolic and Chronic Diseases, 430060, Wuhan, China.
| | - Qi-Zhu Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, 430060, Wuhan, China.
- Hubei Key Laboratory of Metabolic and Chronic Diseases, 430060, Wuhan, China.
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Tang Z, Jiang W, Mao M, Zhao J, Chen J, Cheng N. Deubiquitinase USP35 modulates ferroptosis in lung cancer via targeting ferroportin. Clin Transl Med 2021; 11:e390. [PMID: 33931967 PMCID: PMC8087931 DOI: 10.1002/ctm2.390] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 03/29/2021] [Accepted: 04/07/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Ferroptosis is essential to regulate tumor growth and serves as a promising therapeutic target to lung cancer. Ubiquitin-specific protease 35 (USP35) belongs to the deubiquitinases family that is associated with cell proliferation and mitosis. In this research, we aim to elucidate the potential role and molecular basis of USP35 in lung cancer. METHODS Lung cancer cells were infected with lentiviral vectors to silence or overexpress USP35. Cell viability, colony formation, lipid reactive oxygen species production, intracellular iron metabolism, and other ferroptotic markers were detected. The role of USP35 on ferroptosis and tumor progression were also tested in mouse tumor xenograft models in vivo. RESULTS USP35 was abundant in human lung cancer tissues and cell lines. USP35 knockdown promoted ferroptosis, and inhibited cell growth, colony formation, and tumor progression in lung cancer cells. USP35 overexpression did not affect tumorigenesis and ferroptosis under basal conditions, but reduced erastin/RSL3-triggered iron disturbance and ferroptosis, thereby facilitating lung cancer cell growth and tumor progression. Further studies determined that USP35 directly interacted with ferroportin (FPN) and functioned as a deubiquitinase to maintain its protein stability. More importantly, we observed that USP35 knockdown sensitized lung cancer cells to cisplatin and paclitaxel chemotherapy. CONCLUSION USP35 modulates ferroptosis in lung cancer via targeting FPN, and it is a promising therapeutic target to lung cancer.
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Affiliation(s)
- Zheng Tang
- Department of Thoracic SurgeryZhongnan Hospital of Wuhan UniversityWuhanChina
| | - Wanli Jiang
- Department of Thoracic SurgeryRenmin Hospital of Wuhan UniversityWuhanChina
| | - Ming Mao
- Department of Thoracic SurgeryZhongnan Hospital of Wuhan UniversityWuhanChina
| | - Jinping Zhao
- Department of Thoracic SurgeryZhongnan Hospital of Wuhan UniversityWuhanChina
| | - Jiakuan Chen
- Department of Thoracic SurgeryZhongnan Hospital of Wuhan UniversityWuhanChina
| | - Nitao Cheng
- Department of Thoracic SurgeryZhongnan Hospital of Wuhan UniversityWuhanChina
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