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Li G, Zhou C, Wang L, Zheng Y, Zhou B, Li G, Ma Z, Sun P, Deng Y, Su L, Wang J, Cui H. MitoCur-1 induces ferroptosis to reverse vemurafenib resistance in melanoma through inhibition of USP14. Pigment Cell Melanoma Res 2024; 37:316-328. [PMID: 37985430 DOI: 10.1111/pcmr.13150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 09/23/2023] [Accepted: 10/23/2023] [Indexed: 11/22/2023]
Abstract
Melanoma is an aggressive malignant tumor with a poor prognosis. Vemurafenib (PLX4032, vem) is applied to specifically treat BRAF V600E-mutated melanoma patients. However, prolonged usage of vem makes patients resistant to the drug and finally leads to clinical failure. We previously tested the combination regimen of tubulin inhibitor VERU-111 with vem, as well as USP14 selective inhibitor b-AP15 in combination with vem, both of which have showed profound therapeutic effects in overcoming vem resistance in vitro and in vivo. Most importantly, we discovered that vem-resistant melanoma cell lines highly expressed E3 ligase SKP2 and DUB enzyme USP14, and we have demonstrated that USP14 directly interacts and stabilizes SKP2, which contributes to vem resistance. These works give us a clue that USP14 might be a promising target to overcome vem resistance in melanoma. MitoCur-1 is a curcumin derivative, which was originally designed to specifically target tumor mitochondria inducing redox imbalance, thereby promoting tumor cell death. In this study, we have demonstrated that it can work as a novel USP14 inhibitor, and thus bears great potential in providing an anti-tumor effect and sensitizing vem-resistant cells by inducing ferroptosis in melanoma. Application of MitoCur-1 dramatically induces USP14 inhibition and inactivation of GPX4 enzyme, meanwhile, increases the depletion of GSH and decreases SLC7A11 expression level. As a result, ferrous iron-dependent lipid ROS accumulated in the cell, inducing ferroptosis, thus sensitizes the vem-resistant melanoma cell. Interestingly, overexpression of USP14 antagonized all the ferroptosis cascade events induced by MitoCur-1, therefore, we conclude that MitoCur-1 induces ferroptosis through inhibition of USP14. We believe that by inhibition of USP14, vem resistance can be reversed and will finally benefit melanoma patients in future.
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Affiliation(s)
- Gege Li
- School of Public Health, Institute of Toxicology, Lanzhou University, Lanzhou, China
| | - Changlong Zhou
- School of Public Health, Institute of Toxicology, Lanzhou University, Lanzhou, China
| | - Lu Wang
- Nuclear Medicine Department, Lanzhou University Second Hospital, Lanzhou, Gansu, China
- Second Clinical School, Lanzhou University, Lanzhou, China
| | - Yalong Zheng
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, Gansu, China
| | - Bo Zhou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, Gansu, China
| | - Guoyan Li
- School of Public Health, Institute of Toxicology, Lanzhou University, Lanzhou, China
| | - Zhongyu Ma
- School of Public Health, Institute of Toxicology, Lanzhou University, Lanzhou, China
| | - Peng Sun
- Second Department of Cardio-Thoracic Surgery, Gansu Cancer Hospital, Lanzhou, China
| | - Yuantao Deng
- Department of Anesthesiology, Gansu Cancer Hospital, Lanzhou, China
| | - Li Su
- School of Public Health, Institute of Toxicology, Lanzhou University, Lanzhou, China
| | - Junling Wang
- School of Public Health, Institute of Toxicology, Lanzhou University, Lanzhou, China
| | - Hongmei Cui
- School of Public Health, Institute of Toxicology, Lanzhou University, Lanzhou, China
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2
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Shi TM, Chen XF, Ti H. Ferroptosis-Based Therapeutic Strategies toward Precision Medicine for Cancer. J Med Chem 2024; 67:2238-2263. [PMID: 38306267 DOI: 10.1021/acs.jmedchem.3c01749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2024]
Abstract
Ferroptosis is a type of iron-dependent programmed cell death characterized by the dysregulation of iron metabolism and the accumulation of lipid peroxides. This nonapoptotic mode of cell death is implicated in various physiological and pathological processes. Recent findings have underscored its potential as an innovative strategy for cancer treatment, particularly against recalcitrant malignancies that are resistant to conventional therapies. This article focuses on ferroptosis-based therapeutic strategies for precision cancer treatment, covering the molecular mechanisms of ferroptosis, four major types of ferroptosis inducers and their inhibitory effects on diverse carcinomas, the detection of ferroptosis by fluorescent probes, and their implementation in image-guided therapy. These state-of-the-art tactics have manifested enhanced selectivity and efficacy against malignant carcinomas. Given that the administration of ferroptosis in cancer therapy is still at a burgeoning stage, some major challenges and future perspectives are discussed for the clinical translation of ferroptosis into precision cancer treatment.
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Affiliation(s)
- Tong-Mei Shi
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, P. R. China
| | - Xiao-Fei Chen
- Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology, Institute of Analysis, Guangdong Academy of Sciences, China National Analytical Center, Guangzhou, Guangzhou 510070, P. R. China
| | - Huihui Ti
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou 510006, P. R. China
- Guangdong Province Precise Medicine Big Data of Traditional Chinese Medicine Engineering Technology Research Center, Guangdong Pharmaceutical University, Guangzhou 510006, P. R. China
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3
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Fu Q, Yang X, Wang M, Zhu K, Wang Y, Song J. Activatable Probes for Ratiometric Imaging of Endogenous Biomarkers In Vivo. ACS NANO 2024; 18:3916-3968. [PMID: 38258800 DOI: 10.1021/acsnano.3c10659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Dynamic variations in the concentration and abnormal distribution of endogenous biomarkers are strongly associated with multiple physiological and pathological states. Therefore, it is crucial to design imaging systems capable of real-time detection of dynamic changes in biomarkers for the accurate diagnosis and effective treatment of diseases. Recently, ratiometric imaging has emerged as a widely used technique for sensing and imaging of biomarkers due to its advantage of circumventing the limitations inherent to conventional intensity-dependent signal readout methods while also providing built-in self-calibration for signal correction. Here, the recent progress of ratiometric probes and their applications in sensing and imaging of biomarkers are outlined. Ratiometric probes are classified according to their imaging mechanisms, and ratiometric photoacoustic imaging, ratiometric optical imaging including photoluminescence imaging and self-luminescence imaging, ratiometric magnetic resonance imaging, and dual-modal ratiometric imaging are discussed. The applications of ratiometric probes in the sensing and imaging of biomarkers such as pH, reactive oxygen species (ROS), reactive nitrogen species (RNS), glutathione (GSH), gas molecules, enzymes, metal ions, and hypoxia are discussed in detail. Additionally, this Review presents an overview of challenges faced in this field along with future research directions.
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Affiliation(s)
- Qinrui Fu
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, Shandong 266021, China
| | - Xiao Yang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, Shandong 266021, China
| | - Mengzhen Wang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, Shandong 266021, China
| | - Kang Zhu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yin Wang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, Shandong 266021, China
| | - Jibin Song
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
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4
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Liu X, Cui H, Li M, Chai Z, Wang H, Jin X, Dai F, Liu Y, Zhou B. Tumor killing by a dietary curcumin mono-carbonyl analog that works as a selective ROS generator via TrxR inhibition. Eur J Med Chem 2023; 250:115191. [PMID: 36758308 DOI: 10.1016/j.ejmech.2023.115191] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 02/03/2023] [Accepted: 02/04/2023] [Indexed: 02/08/2023]
Abstract
In comparison with normal cells, cancer cells feature intrinsic oxidative stress, thereby being more vulnerable to further production of reactive oxygen species (ROS) by pro-oxidative anticancer agents (PAAs). However, PAAs also inevitably generate ROS in normal cells, resulting in their narrow therapeutic window and toxic side effects that greatly limit their clinical application. To develop PAAs that generate ROS selectively in cancer cells over in normal cells, we rationally designed three series of 21 dietary curcumin 5-carbon mono-carbonyl analogs differentiated by either placement of the cyclohexanone, piperidone, and methylpiperidone linkers, or introduction of electron-withdrawing trifluoromethyl and electron-donating methoxyl groups on its two aromatic rings in the ortho, meta, or para position to the linkers. From the designed molecules, 2c, characterized of the presence of the meta-CF3-substituted mode and the piperidone linker, was identified as a potent selective ROS-generating agent, allowing its ability to kill selectively human non-small cell lung cancer NCI-H460 (IC50 = 0.44 μM) over human normal lung MRC-5 cells with a selectivity index of 32.0. Additionally, it was more potent and selective than the conventional chemotherapeutic agents (5-fluorouracil and camptothecin) did. Mechanistical investigation reveals that by means of its Michael acceptor unit and structure characteristics as described above, 2c could covalently modify the Sec-498 residue of intracellular thioredoxin reductase (TrxR) to generate ROS selectively, resulting in ROS-dependent apoptosis and ferroptosis of NCI-H460 cells. Noticeably, 2c inhibited significantly the growth of NCI-H460 cell xenograft tumor in nude mice without obvious toxicity to liver and kidney. Together, this work highlights a practical strategy of targeting TrxR overexpressed in cancer cells to develop PAAs capable of generating ROS selectively, as evidenced by the example of 2c.
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Affiliation(s)
- Xuefeng Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China; School of Pharmacy, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China; College of Pharmacy, Gansu University of Chinese Medicine, 35 Dingxi East Road, Lanzhou, Gansu, 730000, China
| | - Hongmei Cui
- School of Public Health, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Mi Li
- College of Pharmacy, Gansu University of Chinese Medicine, 35 Dingxi East Road, Lanzhou, Gansu, 730000, China; Gansu University Key Laboratory for Molecular Medicine & Chinese Medicine Prevention and Treatment of Major Diseases, Gansu University of Chinese Medicine, 35 Dingxi East Road, Lanzhou, Gansu, 730000, China
| | - Zuohu Chai
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Haibo Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Xiaojie Jin
- College of Pharmacy, Gansu University of Chinese Medicine, 35 Dingxi East Road, Lanzhou, Gansu, 730000, China; Gansu University Key Laboratory for Molecular Medicine & Chinese Medicine Prevention and Treatment of Major Diseases, Gansu University of Chinese Medicine, 35 Dingxi East Road, Lanzhou, Gansu, 730000, China
| | - Fang Dai
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China.
| | - Yongqi Liu
- Gansu University Key Laboratory for Molecular Medicine & Chinese Medicine Prevention and Treatment of Major Diseases, Gansu University of Chinese Medicine, 35 Dingxi East Road, Lanzhou, Gansu, 730000, China.
| | - Bo Zhou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China.
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A new 1,3,4-thiadiazole-based ESIPT probe for detection of Hcy/Cys and GSH by two-channel fluorescent procedure and its potential applications. RESEARCH ON CHEMICAL INTERMEDIATES 2023. [DOI: 10.1007/s11164-023-04975-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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6
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Sun G, Fang H. Heteroatom substitution controlled luminescent property and excited state intramolecular proton transfer (ESIPT) process of novel benzothiazole-based fluorophore: A TD-DFT investigation. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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7
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Bag R, Sikdar Y, Sahu S, Das Mukhopadhyay C, Drew MG, Goswami S. Benzimidazole based ESIPT active chemosensors enable nano–molar detection of Cu2+ in 90% aqueous solution, MCF–7 cells, and plants. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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8
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Insight into the probe BTFMB responses to hydrogen peroxide switching on ESIPT reaction. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.140067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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9
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Qin J, Tian H, Kong F, Zhao QQ, Zhang C, Gu H, Li Y. A novel long excitation/emission wavelength fluorophore as platform utilized to construct NIR probes for bioimaging and biosensing. Bioorg Chem 2022; 127:105954. [PMID: 35753118 DOI: 10.1016/j.bioorg.2022.105954] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/22/2022] [Accepted: 06/08/2022] [Indexed: 11/25/2022]
Abstract
Near-infrared (NIR) fluorophores, especially dicyano-based fluorophores and xanthene-based hemicyanines, have beenput high expectation in bioimaging application due to their excellent optical properties. However, they suffer from inherentshortagessuch as short excitation/emission wavelength (less than 700 nm) or small Stokes shift (20-50 nm). Herein, we constructed a novel NIR dicyano-based fluorophore (DCO-HBTN). Toourknowledge, it is the first reported dicyano-based fluorophore of which the excitation/emission wavelength is more than 650 nm and Stokes shift is more than 100 nm. To demonstrate the feasibility of our efforts, we developed two NIR fluorescent probes (Probe-Cys and Probe-H2S) based on the fluorophore, Probe-Cys displayed good selective and highly sensitive (LOD = 0.28 μM) recognition of Cys over Hcy and GSH, which was used to visualize endogenous Cys in tumor tissue. Probe-H2S exhibited an. excellent specific and sensitive (LOD = 0.11 μM) response to H2S, which was applied in monitoring H2S releasing from the prodrug in vitro and in vivo.
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Affiliation(s)
- Jingcan Qin
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200233, People's Republic of China
| | - Hao Tian
- Department of Imaging, Affiliated Hospital of Nantong University, Nantong 226001, People's Republic of China
| | - Fei Kong
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
| | - Qian Qian Zhao
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200233, People's Republic of China
| | - Chuan Zhang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
| | - Hongmei Gu
- Department of Imaging, Affiliated Hospital of Nantong University, Nantong 226001, People's Republic of China.
| | - Yuehua Li
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200233, People's Republic of China.
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10
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Liu X, Wang Y, Zheng Y, Duan D, Dai F, Zhou B. Michael acceptor-dependent pro-oxidative intervention against angiogenesis by [6]-dehydroshogaol, a pungent constituent of ginger. Eur J Pharmacol 2022; 925:174990. [PMID: 35500643 DOI: 10.1016/j.ejphar.2022.174990] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 04/23/2022] [Accepted: 04/26/2022] [Indexed: 11/30/2022]
Abstract
Accumulating evidence suggests that ginger and its pungent constituents harbor a wealth of biological activities including cancer chemopreventive activity. However, relatively few researches focus on [6]-dehydroshogaol (6-DHS) compared with other ginger pungent constituents such as [6]-shogaol (6S). In this work, we selected three ginger compounds, 6-DHS, 6S and [6]-paradol (6P) differentiated by the presence and number of the Michael acceptor units, to probe structural basis and mechanism of 6-DHS in inhibiting angiogenesis, a key step for tumor growth and metastasis. It was found that their antiangiogenic activity is significantly dependent on the presence and number of Michael acceptor units. Benefiting from its two Michael acceptor units, 6-DHS is the most potent inhibitor of thioredoxin reductase and depletor of glutathione, thereby being the most active generator of reactive oxygen species, which is responsible for its strongest ability to inhibit angiogenesis. This work highlights 6-DHS being a Michael acceptor-dependent pro-oxidative angiogenesis inhibitor.
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Affiliation(s)
- Xuefeng Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China; School of Pharmacy, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Yihua Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Yalong Zheng
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Dechen Duan
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Fang Dai
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Bo Zhou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China.
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11
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Design of an ICT-based fluorescent probe with excellent sensitivity for visualizing GSH levels in live cells. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02196-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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12
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Zheng YL, Tu ZS, Cui HM, Yan S, Duan DC, Tang W, Dai F, Zhou B. Redox-Based Strategy for Selectively Inducing Energy Crisis Inside Cancer Cells: An Example of Modifying Dietary Curcumin to Target Mitochondria. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:2898-2910. [PMID: 35213152 DOI: 10.1021/acs.jafc.1c07690] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Reprograming of energy metabolism is a major hallmark of cancer, but its effective intervention is still a challenging task due to metabolic heterogeneity and plasticity of cancer cells. Herein, we report a general redox-based strategy for meeting the challenge. The strategy was exemplified by a dietary curcumin analogue (MitoCur-1) that was designed to target mitochondria (MitoCur-1). By virtue of its electrophilic and mitochondrial-targeting properties, MitoCur-1 generated reactive oxygen species (ROS) more effectively and selectively in HepG2 cells than in L02 cells via the inhibition of mitochondrial antioxidative thioredoxin reductase 2 (TrxR2). The ROS generation preferentially mediated the energy crisis of HepG2 cells in a dual-inhibition fashion against both mitochondrial and glycolytic metabolisms, which could hit the metabolic plasticity of HepG2 cells. The ROS-dependent energy crisis also allowed its preferential killing of HepG2 cells (IC50 = 1.4 μM) over L02 cells (IC50 = 9.1 μM), via induction of cell-cycle arrest, apoptosis and autophagic death, and its high antitumor efficacy in vivo, in nude mice bearing HepG2 tumors (15 mg/kg). These results highlight that inhibiting mitochondrial TrxR2 to produce ROS by electrophiles is a promising redox-based strategy for the effective intervention of cancer cell energy metabolic reprograming.
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Affiliation(s)
- Ya-Long Zheng
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Zhi-Shan Tu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Hong-Mei Cui
- School of Public Health, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Shuai Yan
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - De-Chen Duan
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Wei Tang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Fang Dai
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Bo Zhou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
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13
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Du YT, Long Y, Tang W, Liu XF, Dai F, Zhou B. Prooxidative inhibition against NF-κB-mediated inflammation by pharmacological vitamin C. Free Radic Biol Med 2022; 180:85-94. [PMID: 35038551 DOI: 10.1016/j.freeradbiomed.2022.01.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/11/2021] [Accepted: 01/11/2022] [Indexed: 10/19/2022]
Abstract
Vitamin C (VC), widely found in vegetables and fruits, operates as an electron donor to perform various biological functions including anti-inflammatory activity. However, the mechanisms by which VC inhibits inflammation remain insufficiently understood. Accordingly, we performed a detail mechanistic study on anti-inflammatory activity of VC at millimolar (pharmacological) concentrations in lipopolysaccharides-stimulated RAW264.7 cells. It was found that VC and its two-electron oxidative product, dehydroascorbate (DHA) constructs an efficient redox cycle with the aid of intracellular glutathione and copper ions, thereby facilitating the generation of reactive oxygen species (ROS) and the ROS-dependent inhibition against the NF-κB-mediated inflammation.
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Affiliation(s)
- Yu-Ting Du
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China; Department of Chemistry, Xinzhou Teachers University, Xinzhou, Shanxi, 034000, China
| | - Ying Long
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Wei Tang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Xue-Feng Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China; School of Pharmacy, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Fang Dai
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Bo Zhou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China.
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14
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A new simple ESIPT-based fluorescent probe for rapid detection of cysteine with high sensitivity and specificity and bioimaging in living cells. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131865] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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15
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NCL-based mitochondrial-targeting fluorescent probe for the detection of Glutathione in living cells. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.06.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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16
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Zhang HC, Tian DH, Zheng YL, Dai F, Zhou B. Designing an ESIPT-based fluorescent probe for imaging of hydrogen peroxide during the ferroptosis process. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 248:119264. [PMID: 33310274 DOI: 10.1016/j.saa.2020.119264] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 06/12/2023]
Abstract
Hydrogen peroxide (H2O2), depending on its levels, plays a crucial role in either modulating various biological processes as a signal molecule, or mediating oxidative damage as a toxin. Therefore, monitoring intracellular H2O2 levels is pivotal for exploring its physiological and pathological roles. Using a modified 2-(2'-hydroxyphenyl) benzothiazole (HBT) as the fluorophore, and a pinacol phenylborate ester as the responsive group, herein we developed an excited-state intramolecular proton transfer (ESIPT)-based probe BTFMB. The probe exhibited turn-on fluorescence response, large Stokes shift (162 nm) and low detection limit (109 nM) toward H2O2, and was successfully applied for monitoring exogenous and endogenous production of H2O2, and identifying accumulation of H2O2 during the ferroptosis process.
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Affiliation(s)
- Han-Chen Zhang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Di-Hua Tian
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Ya-Long Zheng
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Fang Dai
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Bo Zhou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China.
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