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Sun J, Chen S, Zang D, Sun H, Sun Y, Chen J. Butyrate as a promising therapeutic target in cancer: From pathogenesis to clinic (Review). Int J Oncol 2024; 64:44. [PMID: 38426581 PMCID: PMC10919761 DOI: 10.3892/ijo.2024.5632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 02/19/2024] [Indexed: 03/02/2024] Open
Abstract
Cancer is one of the leading causes of mortality worldwide. The etiology of cancer has not been fully elucidated yet, and further enhancements are necessary to optimize therapeutic efficacy. Butyrate, a short‑chain fatty acid, is generated through gut microbial fermentation of dietary fiber. Studies have unveiled the relevance of butyrate in malignant neoplasms, and a comprehensive understanding of its role in cancer is imperative for realizing its full potential in oncological treatment. Its full antineoplastic effects via the activation of G protein‑coupled receptors and the inhibition of histone deacetylases have been also confirmed. However, the underlying mechanistic details remain unclear. The present study aimed to review the involvement of butyrate in carcinogenesis and its molecular mechanisms, with a particular emphasis on its association with the efficacy of tumor immunotherapy, as well as discussing relevant clinical studies on butyrate as a therapeutic target for neoplastic diseases to provide new insights into cancer treatment.
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Affiliation(s)
- Jinzhe Sun
- Department of Oncology, Division of Thoracic Neoplasms, Dalian, Liaoning 116000, P.R. China
| | - Shiqian Chen
- Department of Oncology, Division of Thoracic Neoplasms, Dalian, Liaoning 116000, P.R. China
| | - Dan Zang
- Department of Oncology, Division of Thoracic Neoplasms, Dalian, Liaoning 116000, P.R. China
| | - Hetian Sun
- Department of Ophthalmology, The Second Hospital of Dalian Medical University, Dalian, Liaoning 116000, P.R. China
| | - Yan Sun
- Department of Oncology, Division of Thoracic Neoplasms, Dalian, Liaoning 116000, P.R. China
| | - Jun Chen
- Department of Oncology, Division of Thoracic Neoplasms, Dalian, Liaoning 116000, P.R. China
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Xia Q, Lan J, Pan Y, Wang Y, Song T, Yang Y, Tian X, Chen L, Gu Z, Ding YY. Effects of Dityrosine on Lactic Acid Metabolism in Mice Gastrocnemius Muscle During Endurance Exercise via the Oxidative Stress-Induced Mitochondria Damage. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:5269-5282. [PMID: 38439706 DOI: 10.1021/acs.jafc.3c09649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
Dityrosine (Dityr) has been detected in commercial food as a product of protein oxidation and has been shown to pose a threat to human health. This study aims to investigate whether Dityr causes a decrease in lactic acid metabolism in the gastrocnemius muscle during endurance exercise. C57BL/6 mice were administered Dityr or saline by gavage for 13 weeks and underwent an endurance exercise test on a treadmill. Dityr caused a severe reduction in motion displacement and endurance time, along with a significant increase in lactic acid accumulation in the blood and gastrocnemius muscle in mice after exercise. Dityr induced significant mitochondrial defects in the gastrocnemius muscle of mice. Additionally, Dityr induced serious oxidative stress in the gastrocnemius muscle, accompanied by inflammation, which might be one of the causes of mitochondrial dysfunction. Moreover, significant apoptosis in the gastrocnemius muscle increased after exposure to Dityr. This study confirmed that Dityr induced oxidative stress in the gastrocnemius muscle, which further caused significant mitochondrial damage in the gastrocnemius muscle cell, resulting in decreased capacity of lactic acid metabolism and finally affected performance in endurance exercise. This may be one of the possible mechanisms by which highly oxidized foods cause a decreased muscle energy metabolism.
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Affiliation(s)
- Qiudong Xia
- Department of Physical Education, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Jinchi Lan
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Yuxiang Pan
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Yuxin Wang
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Tianyuan Song
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Ying Yang
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Xu Tian
- Beijing Competitor Sports Nutrition Research Institute, Beijing 100027, China
| | - Longjun Chen
- Huzhou Shengtao Biotechnology LLC, Huzhou 313000, China
| | - Zhenyu Gu
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Yin-Yi Ding
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
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Zhou XR, Wang XY, Sun YM, Zhang C, Liu KJ, Zhang FY, Xiang B. Glycyrrhizin Protects Submandibular Gland Against Radiation Damage by Enhancing Antioxidant Defense and Preserving Mitochondrial Homeostasis. Antioxid Redox Signal 2024. [PMID: 38069572 DOI: 10.1089/ars.2022.0183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Aims: Radiotherapy inevitably causes radiation damage to the salivary glands (SGs) in patients with head and neck cancers (HNCs). Excessive reactive oxygen species (ROS) levels and imbalanced mitochondrial homeostasis are serious consequences of ionizing radiation in SGs; however, there are few mitochondria-targeting therapeutic approaches. Glycyrrhizin is the main extract of licorice root and exhibits antioxidant activity to relieve mitochondrial damage in certain oxidative stress conditions. Herein, the effects of glycyrrhizin on irradiated submandibular glands (SMGs) and the related mechanisms were investigated. Results: Glycyrrhizin reduced radiation damage in rat SMGs at both the cell and tissue levels, and promoted saliva secretion in irradiated SMGs. Glycyrrhizin significantly downregulated high-mobility group box-1 protein (HMGB1) and toll-like receptor 5 (TLR5). Moreover, glycyrrhizin significantly suppressed the increases in malondialdehyde and glutathione disulfide (GSSG) levels; elevated the activity of some critical antioxidants, including superoxide dismutase, catalase, glutathione peroxidase, and glutathione (GSH); and increased the GSH/GSSG ratio in irradiated cells. Importantly, glycyrrhizin effectively enhanced thioredoxin-2 levels and scavenged mitochondrial ROS, inhibited the decline in mitochondrial membrane potential, improved adenosine triphosphate synthesis, preserved the mitochondrial ultrastructure, activated the proliferator-activated receptor-gamma coactivator-1alpha (PGC-1α)/nuclear respiratory factor 1/2 (NRF1/2)/mitochondrial transcription factor A (TFAM) signaling pathway, and inhibited mitochondria-related apoptosis in irradiated SMG cells and tissues. Innovation: Radiotherapy causes radiation sialadenitis in HNC patients. Our data suggest that glycyrrhizin could be a mitochondria-targeted antioxidant for the prevention of radiation damage in SGs. Conclusion: These findings demonstrate that glycyrrhizin protects SMGs from radiation damage by downregulating HMGB1/TLR5 signaling, maintaining intracellular redox balance, eliminating mitochondrial ROS, preserving mitochondrial homeostasis, and inhibiting apoptosis.
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Affiliation(s)
- Xin-Ru Zhou
- Laboratory of Oral and Maxillofacial Disease, Dalian, China
| | - Xin-Yue Wang
- Laboratory of Oral and Maxillofacial Disease, Dalian, China
| | - Yue-Mei Sun
- Laboratory of Oral and Maxillofacial Disease, Dalian, China
| | - Chong Zhang
- Laboratory of Oral and Maxillofacial Disease, Dalian, China
| | - Ke Jian Liu
- Stony Brook Cancer Center, Renaissance School of Medicine, Stony Brook University, Stony Brook, New York, USA
| | - Fu-Yin Zhang
- Department of Oral Surgery, Second Hospital of Dalian Medical University, Dalian, China
| | - Bin Xiang
- Laboratory of Oral and Maxillofacial Disease, Dalian, China
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He Y, Lu F, Jiang C, Gong F, Wu Z, Ostrikov K. Cold atmospheric plasma stabilizes mismatch repair for effective, uniform treatment of diverse colorectal cancer cell types. Sci Rep 2024; 14:3599. [PMID: 38351129 PMCID: PMC10864286 DOI: 10.1038/s41598-024-54020-0] [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: 09/28/2023] [Accepted: 02/07/2024] [Indexed: 02/16/2024] Open
Abstract
Mismatch Repair (MMR) mechanisms play a pivotal role in rectifying DNA replication errors and maintaining the stability of DNA microsatellite structure. Colorectal cancer (CRC) can be characterized into microsatellite stability (MSS) and microsatellite instability (MSI) subtypes based on the functionality of MMR. MSI CRC notably exhibits enhanced chemotherapy resistance, attributable to diminished MMR-related protein expression. Cold atmospheric plasma (CAP) has emerged as a promising treatment modality, demonstrating efficacy in inducing apoptosis in various cancer cells. However, the therapeutic impact of CAP on MSI colorectal cancer, and the underlying mechanisms remain elusive. In this study, we investigated the effects of CAP on MSI (MC38, HCT116, and LOVO) and MSS (CT26 and HT29) CRC cell lines. We are probing into the products of CAP treatment. Our findings indicate that CAP treatment induces comparable effects on apoptosis, reactive oxygen species (ROS), and reactive nitrogen species (RNS), as well as the expression of apoptosis-related proteins in both MSI and MSS cells. Mechanistically, CAP treatment led to an elevation in the expression of mismatch repair proteins (MLH1 and MSH2), particularly in MSI cells, which notably have been proven to facilitate the activation of apoptosis-related proteins. Collectively, our study reveals that CAP enhances apoptotic signaling and induces apoptosis in MSI colorectal cancer cells by upregulating the expression of MMR-related proteins, thereby reinforcing MMR stabilization.
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Affiliation(s)
- Yuanyuan He
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230026, China
- Department of Geriatrics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, China
| | - Fu Lu
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230026, China
| | - Chenmin Jiang
- School of Pharmacy, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Fanwu Gong
- Department of Medical Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, China.
| | - Zhengwei Wu
- School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230026, China.
| | - Kostya Ostrikov
- School of Chemistry and Physics and QUT Centre for Biomedical Technologies, Queensland University of Technology (QUT), Brisbane, QLD, 4000, Australia
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Ding Y, Liu S, Zhang M, Su M, Shao B. Suppression of NLRP3 inflammasome activation by astragaloside IV via promotion of mitophagy to ameliorate radiation-induced renal injury in mice. Transl Androl Urol 2024; 13:25-41. [PMID: 38404552 PMCID: PMC10891390 DOI: 10.21037/tau-23-323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 10/24/2023] [Indexed: 02/27/2024] Open
Abstract
Background Irradiation (IR) promotes inflammation and apoptosis by inducing oxidative stress and/or mitochondrial dysfunction (MD). The kidneys are rich in mitochondria, and mitophagy maintains normal renal function by eliminating damaged mitochondria and minimizing oxidative stress. However, whether astragaloside IV (AS-IV) can play a protective role through the mitophagy pathway is not known. Methods We constructed a radiation injury model using hematoxylin and eosin (HE) staining, blood biochemical analysis, immunohistochemistry, TdT-mediated dUTP nick end labeling (TUNEL) staining, ultrastructural observation, and Western blot analysis to elucidate the AS-IV resistance mechanism for IR-induced renal injury. Results IR induced mitochondrial damage; the increase of creatinine (SCr), blood urea nitrogen (BUN) and uric acid (UA); and the activation of NOD-like receptor thermal protein domain-associated protein 3 (NLRP3) inflammasome and apoptosis in renal tissue. AS-IV administration attenuated the IR-induced MD and reactive oxygen species (ROS) levels in the kidney; enhanced the levels of mitophagy-associated protein [PTEN-induced putative kinase 1 (PINK1)], parkin proteins, and microtubule-associated protein 1 light 3 (LC3) II/I ratio in renal tissues; diminished NLRP3 inflammasome activation-mediated proteins [cleaved cysteinyl aspartate-specific proteinase-1 (caspase-1), interleukin-1β (IL-1β)] and apoptosis-related proteins [cleaved caspase-9, cleaved caspase-3, BCL2-associated X (Bax)]; reduced SCr, BUN, and UA levels; and attenuated the histopathological alterations in renal tissue. Conversely, mitophagy inhibitor cyclosporin A (CsA) suppressed the AS-IV-mediated protection of renal tissue. Conclusions AS-IV can strongly diminish the activation and apoptosis of NLRP3 inflammasome, thus attenuating the renal injury induced by radiation by promoting the PINK1/parkin-mediated mitophagy. These findings suggest that AS-IV is a promising drug for treating IR-induced kidney injury.
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Affiliation(s)
- Yanping Ding
- School of Life Science, Northwest Normal University, Lanzhou, China
| | - Shuning Liu
- School of Life Science, Northwest Normal University, Lanzhou, China
| | - Mengqing Zhang
- School of Life Science, Northwest Normal University, Lanzhou, China
| | - Meile Su
- School of Life Science, Northwest Normal University, Lanzhou, China
| | - Baoping Shao
- School of Life Science, Lanzhou University, Lanzhou, China
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Zhang H, Shangguan F, Zhang L, Ma N, Song S, Ma L, Liu C, Liu M, An J, Li H, Cao Q. A novel mechanism of 6-methoxydihydroavicine in suppressing ovarian carcinoma by disrupting mitochondrial homeostasis and triggering ROS/ MAPK mediated apoptosis. Front Pharmacol 2023; 14:1093650. [PMID: 37214469 PMCID: PMC10196025 DOI: 10.3389/fphar.2023.1093650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 04/24/2023] [Indexed: 05/24/2023] Open
Abstract
Introduction: Alkaloids derived from M. cordata (Papaveraceae family), have been found to display antineoplastic activity in several types of cancer. However, the antitumor effects and mechanisms of a new alkaloid extracted from the fruits of M. cordata, named 6-Methoxydihydroavicine (6-ME), remains unclear in the case of ovarian cancer (OC). Methods: CCK-8 assay was employed to analyze the cell viabilities of OC cells. RTCA, and colony-formation assays were performed to measure OC cell growth. Alterations in apoptosis and ROS levels were detected by flow cytometry in accordance with the instructions of corresponding assay kits. A Seahorse XFe96 was executed conducted to confirm the effects of 6-ME on cellular bioenergetics. Western blot and q-RT-PCR were conducted to detect alterations in target proteins. The subcutaneous xenografted tumor model of OC was used to further validate the anti-tumor activity of 6-ME in vivo. Results: Here, we reported for the first time that 6-ME inhibits OC cells growth in vitro and in vivo. Meanwhile, we found that 6-ME showed great antineoplastic activities by disrupting mitochondria homeostasis and promoting apoptosis in OC cells. Further investigation of the upstream signaling of apoptosis revealed that 6-ME-triggered apoptosis was induced by reactive oxygen species (ROS)-mediated mitogen-activated protein kinase (MAPK) activation and mitochondria dysfunction in OC cells. Furthermore, we found oxaloacetic acid (OAA), a crucial metabolite has been proved to be related to NADPH production, can block the cytotoxicity and accumulation of ROS caused by 6-ME in OC cells. Discussion: In summary, our data show that 6-ME exhibits cytotoxicity to OC cells in a ROS-dependent manner by interrupting mitochondrial respiration homeostasis and inducing MAPK-mediated apoptosis. This evidence suggests that 6-ME is a promising remedy for OC intervention.
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Affiliation(s)
- Huachang Zhang
- Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Yantai, Shandong, China
| | - Fugen Shangguan
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lan Zhang
- The Affiliated Taian City Central Hospital of Qingdao University, Taian, Shandong, China
| | - Nengfang Ma
- School of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Shuling Song
- School of Gerontology, Binzhou Medical University, Yantai, Shandong, China
| | - Li Ma
- Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Yantai, Shandong, China
| | - Chuntong Liu
- Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Yantai, Shandong, China
| | - Mengke Liu
- Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Yantai, Shandong, China
| | - Jing An
- Division of Infectious Diseases and Global Health, School of Medicine, University of California San Diego (UCSD), La Jolla, CA, United States
| | - Hua Li
- The Affiliated Taian City Central Hospital of Qingdao University, Taian, Shandong, China
| | - Qizhi Cao
- Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Yantai, Shandong, China
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Nan Z, Dou Y, Chen A, Wang K, Sun J, Meng Z, Neckenig M, Ai D, Liu S, Dong Z, Ma C, Cheng Y, Qu X. Identification and validation of a prognostic signature of autophagy, apoptosis and pyroptosis-related genes for head and neck squamous cell carcinoma: to imply therapeutic choices of HPV negative patients. Front Immunol 2023; 13:1100417. [PMID: 36703967 PMCID: PMC9872116 DOI: 10.3389/fimmu.2022.1100417] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 12/19/2022] [Indexed: 01/12/2023] Open
Abstract
Introduction An effective tool is needed to predict the prognosis of head and neck squamous cell carcinoma (HNSCC). Human papillomavirus (HPV) positive HNSCC patients generally have a favorable survival and a promising responsiveness to radiotherapy, chemoradiotherapy and checkpoint blockades. However, HPV negative patients, the majority of HNSCC patients, have been largely overlooked. Cell death has been involved in the therapeutic resistance of cancers. To this end, we aimed to identify the association of autophagy, apoptosis and pyroptosis-related genes with the prognosis of HNSCC, and construct a prognostic signature to predict the prognosis for HNSCC, especially for HPV negative HNSCC. Methods Autophagy and apoptosis-related genes were obtained from Gene Set Enrichment Analysis (GSEA) website, and pyroptosis-related genes were obtained from GSEA and Gene Ontology (GO) database. We established the cell death index (CDI) based on RNA sequencing (RNA-seq) data and clinicopathological information from The Cancer Genome Atlas (TCGA) dataset. The prognostic value of CDI was verified by Kaplan-Meier, receiver operating characteristic (ROC) and univariate and multivariate Cox regression analyses in TCGA dataset, and validated with the datasets from Gene Expression Omnibus (GEO) and Qilu Hospital of Shandong University. We further assessed the immune microenvironment of patients with high and low CDI scores. Moreover, the expression of the signature genes in HNSCC cell lines were explored. Results We found that CDI was an independent prognostic indicator for overall survival (hazard ratio 3.80, 95% confidential interval: 2.70-5.40, P < 0.001). Furthermore, HNSCC patients with high CDI scores obtained increased overall survival post radiation indicating benefits from radiotherapy of this subgroup. On the other hand, HPV negative HNSCC patients with low CDI exhibited increased checkpoint gene expressions, an inflamed tumor microenvironment and an enriched immune response-related functions, suggesting the potential benefits from checkpoint immunotherapies of this subgroup. Moreover, we validated the baseline and induced expressions of above 16 genes in two HPV negative HNSCC cell lines, CAL27 and SCC-15. Discussion We established a prognostic signature and emphasized its implements in the therapeutic choices of HPV negative HNSCC patients, the majority and the poor outcome population of HNSCC.
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Affiliation(s)
- Zhaodi Nan
- Laboratory of Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yu Dou
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, China,Shandong Key Laboratory of Oral Tissue Regeneration, Shandong University, Jinan, China,Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong University, Jinan, China,Shandong Provincial Clinical Research Center for Oral Diseases, Shandong University, Jinan, China,*Correspondence: Xun Qu, ; Yu Dou,
| | - Anwei Chen
- Department of Oral and Maxillofacial Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Ketao Wang
- Department of Oral and Maxillofacial Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jintang Sun
- Laboratory of Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Zhen Meng
- Precision Biomedical Laboratory, Liaocheng People’s Hospital, Medical College of Liaocheng University, Liaocheng, China
| | - Markus Neckenig
- School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Dan Ai
- Laboratory of Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Shaohua Liu
- Department of Oral and Maxillofacial Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Zuoqing Dong
- Department of Oral and Maxillofacial Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Chao Ma
- Laboratory of Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yufeng Cheng
- Department of Radiation Oncology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xun Qu
- Laboratory of Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China,*Correspondence: Xun Qu, ; Yu Dou,
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Wu ZX, Chen SS, Lu DY, Xue WN, Sun J, Zheng L, Wang YL, Li C, Li YJ, Liu T. Shenxiong glucose injection inhibits oxidative stress and apoptosis to ameliorate isoproterenol-induced myocardial ischemia in rats and improve the function of HUVECs exposed to CoCl 2. Front Pharmacol 2023; 13:931811. [PMID: 36686658 PMCID: PMC9849394 DOI: 10.3389/fphar.2022.931811] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 12/21/2022] [Indexed: 01/06/2023] Open
Abstract
Background: Shenxiong Glucose Injection (SGI) is a traditional Chinese medicine formula composed of ligustrazine hydrochloride and Danshen (Radix et rhizoma Salviae miltiorrhizae; Salvia miltiorrhiza Bunge, Lamiaceae). Our previous studies and others have shown that SGI has excellent therapeutic effects on myocardial ischemia (MI). However, the potential mechanisms of action have yet to be elucidated. This study aimed to explore the molecular mechanism of SGI in MI treatment. Methods: Sprague-Dawley rats were treated with isoproterenol (ISO) to establish the MI model. Electrocardiograms, hemodynamic parameters, echocardiograms, reactive oxygen species (ROS) levels, and serum concentrations of cardiac troponin I (cTnI) and cardiac troponin T (cTnT) were analyzed to explore the protective effect of SGI on MI. In addition, a model of oxidative damage and apoptosis in human umbilical vein endothelial cells (HUVECs) was established using CoCl2. Cell viability, Ca2+ concentration, mitochondrial membrane potential (MMP), apoptosis, intracellular ROS, and cell cycle parameters were detected in the HUVEC model. The expression of apoptosis-related proteins (Bcl-2, Caspase-3, PARP, cytoplasmic and mitochondrial Cyt-c and Bax, and p-ERK1/2) was determined by western blotting, and the expression of cleaved caspase-3 was analyzed by immunofluorescence. Results: SGI significantly reduced ROS production and serum concentrations of cTnI and cTnT, reversed ST-segment elevation, and attenuated the deterioration of left ventricular function in ISO-induced MI rats. In vitro, SGI treatment significantly inhibited intracellular ROS overexpression, Ca2+ influx, MMP disruption, and G2/M arrest in the cell cycle. Additionally, SGI treatment markedly upregulated the expression of anti-apoptotic protein Bcl-2 and downregulated the expression of pro-apoptotic proteins p-ERK1/2, mitochondrial Bax, cytoplasmic Cyt-c, cleaved caspase-3, and PARP. Conclusion: SGI could improve MI by inhibiting the oxidative stress and apoptosis signaling pathways. These findings provide evidence to explain the pharmacological action and underlying molecular mechanisms of SGI in the treatment of MI.
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Affiliation(s)
- Zhong-Xiu Wu
- State Key Laboratory of Functions and Applications of Medicinal Plants and Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China,School of Pharmacy, Guizhou Medical University, Guiyang, China
| | - Shuai-Shuai Chen
- Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) and State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China
| | - Ding-Yan Lu
- Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) and State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China
| | - Wei-Na Xue
- School of Medicine and Health Management, Guizhou Medical University, Guiyang, China
| | - Jia Sun
- State Key Laboratory of Functions and Applications of Medicinal Plants and Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China
| | - Lin Zheng
- State Key Laboratory of Functions and Applications of Medicinal Plants and Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China
| | - Yong-Lin Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants and Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China
| | - Chun Li
- School of Pharmacy, Guizhou Medical University, Guiyang, China
| | - Yong-Jun Li
- Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) and State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China,*Correspondence: Yong-Jun Li, ; Ting Liu,
| | - Ting Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants and Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, China,*Correspondence: Yong-Jun Li, ; Ting Liu,
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9
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Song M, Cui X, Zhang J, Li Y, Li J, Zang Y, Li Q, Yang Q, Chen Y, Cai W, Weng X, Wang Y, Zhu X. Shenlian extract attenuates myocardial ischaemia-reperfusion injury via inhibiting M1 macrophage polarization by silencing miR-155. PHARMACEUTICAL BIOLOGY 2022; 60:2011-2024. [PMID: 36239618 PMCID: PMC9578494 DOI: 10.1080/13880209.2022.2117828] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 08/11/2022] [Accepted: 08/19/2022] [Indexed: 06/16/2023]
Abstract
CONTEXT Shenlian extract (SL) is a combination of Salvia miltiorrhiza Bge. (Labiatae) and Andrographis paniculata (Burm. F.) Wall. Ex Nees (Acanthaceae) extracts, which promote blood circulation and clear endogenous heat toxins. Myocardial ischaemia-reperfusion injury (MI/RI) is aggravated myocardial tissue damage induced by reperfusion therapy after myocardial infarction. OBJECTIVES This study explores the effect of SL on MI/RI and the underlying mechanism. MATERIALS AND METHODS Primary peritoneal macrophages (pMACs) were treated with LPS and SL (5, 10 or 20 μg/mL) for 24 h. The myocardial ischaemia-reperfusion (MI/R) model was established after administration of different doses of SL (90, 180 or 360 mg/kg). Myocardial tissue injury was assessed by methylthiazolyl tetrazolium (TTC) staining and levels of creatine kinase (CK), lactate dehydrogenase (LDH) and superoxide dismutase (SOD) in mice. The double immunofluorescence staining of iNOS/F4/80 and CD86/F4/80 was used to detect macrophage M1 polarization. The levels of miR-155, inflammatory factors and chemokines were detected by qRT-PCR or ELISA. CD86, iNOS, SOCS3, JAK2, p-JAK2, STAT3 and p-STAT3 proteins expressions in macrophages were analyzed by western blotting. Conditioned medium transfer systems were designed to unite M1 macrophages with H/R cardiomyocytes, and cell apoptosis was detected by TUNEL staining, western blotting or immunohistochemistry. RESULTS SL reduced apoptosis, diminished CK and LDH levels, raised SOD concentration and decreased infarct size in the MI/R model. Meanwhile, SL decreased miR-155 level, inhibited M1 macrophage polarization and inflammation. Furthermore, SL promoted SOCS3 expression and blocked JAK2/STAT3 pathway in vitro. CONCLUSIONS SL may be a promising TCM candidate for MI/RI. The underlying mechanisms could be associated with inhibition of M1 macrophage polarization via down-regulating miR-155.
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Affiliation(s)
- Min Song
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Science, Beijing, China
| | - Xihe Cui
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Science, Beijing, China
| | - Jing Zhang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Science, Beijing, China
| | - Yujie Li
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Science, Beijing, China
| | - Jingjing Li
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Science, Beijing, China
| | - Yuanlong Zang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Science, Beijing, China
| | - Qi Li
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Science, Beijing, China
| | - Qing Yang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Science, Beijing, China
| | - Ying Chen
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Science, Beijing, China
| | - Weiyan Cai
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Science, Beijing, China
| | - Xiaogang Weng
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Science, Beijing, China
| | - Yajie Wang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Science, Beijing, China
| | - Xiaoxin Zhu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Science, Beijing, China
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Zhang F, Li Z, Gao P, Zou J, Cui Y, Qian Y, Gu R, Xu W, Hu J. HJ11 decoction restrains development of myocardial ischemia-reperfusion injury in rats by suppressing ACSL4-mediated ferroptosis. Front Pharmacol 2022; 13:1024292. [PMID: 36483736 PMCID: PMC9723372 DOI: 10.3389/fphar.2022.1024292] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 11/07/2022] [Indexed: 08/12/2023] Open
Abstract
HJ11 is a novel traditional Chinese medicine developed from the appropriate addition and reduction of Si-Miao-Yong-An decoction, which has been commonly used to treat ischemia-reperfusion (I/R) injury in the clinical setting. However, the mechanism of action of HJ11 components remains unclear. Ferroptosis is a critical factor that promotes myocardial I/R injury, and the pathophysiological ferroptosis-mediated lipid peroxidation causes I/R injury. Therefore, this study explored whether HJ11 decoction ameliorates myocardial I/R injury by attenuating ACSL4-mediated ferroptosis. This study also explored the effect of ACSL4 expression on iron-dependent programmed cell death by preparing a rat model of myocardial I/R injury and oxygen glucose deprivation/reperfusion (OGD/R)-induced H9c2 cells. The results showed that HJ11 decoction improved cardiac function; attenuated I/R injury, apoptosis, oxidative stress, mitochondrial damage, and iron accumulation; and reduced infarct size in the myocardial I/R injury rat model. Additionally, HJ11 decoction suppressed the expression of ferroptosis-promoting proteins [Acyl-CoA synthetase long-chain family member 4 (ACSL4) and cyclooxygenase-2 (COX2)] but promoted the expression of ferroptosis-inhibiting proteins [ferritin heavy chain 1 (FTH1) and glutathione-dependent lipid hydroperoxidase glutathione peroxidase 4 (GPX4)] in the myocardial tissues of the I/R injury rat model. Similar results were found with the OGD/R-induced H9c2 cells. Interestingly, ACSL4 knockdown attenuated iron accumulation, oxidative stress, and ferroptosis in the OGD/R-treated H9c2 cells. However, ACSL4 overexpression counteracted the inhibitory effect of the HJ11 decoction on OGD/R-triggered oxidative stress and ferroptosis in H9c2 cells. These findings suggest that HJ11 decoction restrained the development of myocardial I/R injury by regulating ACSL4-mediated ferroptosis. Thus, HJ11 decoction may be an effective medication to treat myocardial I/R injury.
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Affiliation(s)
- Fangyuan Zhang
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Ziyun Li
- School of Acupuncture and Tuina, School of Regimen and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, China
| | - Ping Gao
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jiaxi Zou
- School·of·Basic·Medical·Sciences Chengdu·University·of Traditional·Chinese Medicine, Chengdu, China
| | - Yuting Cui
- College of Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin, China
| | - Yi Qian
- The Third School of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Renjun Gu
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Weiming Xu
- China Science and Technology Development Center for Chinese Medicine, Beijing, China
- The First Affilliated Hospital of Henan University of CM, Zhengzhou, China
| | - Jingqing Hu
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
- China Science and Technology Development Center for Chinese Medicine, Beijing, China
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11
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Preclinical Study of Plasmodium Immunotherapy Combined with Radiotherapy for Solid Tumors. Cells 2022; 11:cells11223600. [PMID: 36429033 PMCID: PMC9688403 DOI: 10.3390/cells11223600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/26/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022] Open
Abstract
Immune checkpoint blockade therapy (ICB) is ineffective against cold tumors and, although it is effective against some hot tumors, drug resistance can occur. We have developed a Plasmodium immunotherapy (PI) that can overcome these shortcomings. However, the specific killing effect of PI on tumor cells is relatively weak. Radiotherapy (RT) is known to have strong specific lethality to tumor cells. Therefore, we hypothesized that PI combined with RT could produce synergistic antitumor effects. We tested our hypothesis using orthotopic and subcutaneous models of mouse glioma (GL261, a cold tumor) and a subcutaneous model of mouse non-small cell lung cancer (NSCLC, LLC, a hot tumor). Our results showed that, compared with each monotherapy, the combination therapy more significantly inhibited tumor growth and extended the life span of tumor-bearing mice. More importantly, the combination therapy could cure approximately 70 percent of glioma. By analyzing the immune profile of the tumor tissues, we found that the combination therapy was more effective in upregulating the perforin-expressing effector CD8+ T cells and downregulating the myeloid-derived suppressor cells (MDSCs), and was thus more effective in the treatment of cancer. The clinical transformation of PI combined with RT in the treatment of solid tumors, especially glioma, is worthy of expectation.
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12
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Huang J, Hong L, Shen B, Zhou Y, Lan J, Peng Y. FOXO1 represses MCL1 transcription to regulate the function of vascular smooth muscle cells in intracranial aneurysm. Exp Brain Res 2022; 240:2861-2870. [DOI: 10.1007/s00221-022-06461-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 09/03/2022] [Indexed: 11/04/2022]
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Wang J, Liu H, Wu X, Shi C, Li W, Yuan Y, Liu Y, Xing D. Induction of apoptosis in SGC-7901 cells by iridium(III) complexes via endoplasmic reticulum stress-mitochondrial dysfunction pathway. J Biol Inorg Chem 2022; 27:455-469. [PMID: 35817878 DOI: 10.1007/s00775-022-01943-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 05/20/2022] [Indexed: 11/26/2022]
Abstract
This study was intended to evaluate the anticancer activity of three newly synthesized iridium(III) complexes [Ir(ppy)2(PEIP)](PF6) (1) (ppy = 2-phenylpyridine, PEIP = 2-phenethyl-1H-imidazo[4,5-f][1,10]phenanthroline), [Ir(ppy)2(SIP)](PF6) (2) (SIP = (E)-2-styryl-1H-imidazo[4,5-f][1,10]phenanthroline) and [Ir(ppy)2(PEYIP)](PF6) (3) (PEYIP = 2-phenethynyl-1H-imidazo[4,5-f][1,10]phenanthroline). The cytotoxic activity in vitro against A549, SGC-7901, HepG2, HeLa and normal NIH3T3 cells was investigated by 3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) method. We found that the complexes 1, 2 and 3 significantly inhibited cell proliferation, in particular, complexes 2 and 3 show high cytotoxic effect on SGC-7901 cells with an IC50 value of 5.8 ± 0.7 and 4.4 ± 0.1 μM. Moreover, cell cycle assay revealed that the complexes could block G2/M phase of the cell cycle. Apoptotic evaluation by Annexin V/PI staining indicated that complexes 1-3 can induce apoptosis in SGC-7901 cells. In addition, microscopy detection suggested that disruption of mitochondrial functions, characterized by increased generation of intracellular ROS and Ca2+ as well as decrease of mitochondrial membrane potential. Western blot analysis shows that the complexes upregulate the expression of pro-apoptotic Bax and downregulate the expression of anti-apoptotic Bcl-2, which further activates caspase-3 and prompts the cleavage of PARP. Taken together, these results demonstrated that complexes 1-3 exert a potent anticancer effect on SGC-7901 cells via ROS-mediated endoplasmic reticulum stress-mitochondrial apoptotic pathway and have a potential to be developed as novel chemotherapeutic agents for human gastric cancer. Three new iridium(III) complexes [Ir(ppy)2(PEIP)](PF6) (1) (ppy = 2-phenylpyridine, PEIP = 2-phenethyl-1H-imidazo[4,5-f][1,10]phenanthroline), [Ir(ppy)2(SIP)](PF6) (2) (SIP = 2-styryl-1H-imidazo[4,5-f][1,10]phenanthroline) and [Ir(ppy)2(PEYIP)](PF6) (3) (PEYIP = 2-phenethynyl-1H-imidazo[4,5-f][1,10]phenanthroline) were synthesized and characterized. The anticancer activity in vitro was investigated by 3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) method. The results show that the complexes induce apoptosis via ROS-mediated endoplasmic reticulum stress-mitochondrial dysfunction pathway.
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Affiliation(s)
- Jiawen Wang
- School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Haimei Liu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Xiaoyun Wu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Chuanling Shi
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Wenlong Li
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Yuhan Yuan
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Yunjun Liu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China.
| | - Degang Xing
- School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China.
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Luteolin Improves Cyclophosphamide-Induced Cystitis through TXNIP/NLRP3 and NF- κB Pathways. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:1718709. [PMID: 34804174 PMCID: PMC8601811 DOI: 10.1155/2021/1718709] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 10/05/2021] [Accepted: 10/18/2021] [Indexed: 12/16/2022]
Abstract
Hemorrhagic cystitis is an important complication of cyclophosphamide chemotherapy, and current therapies for the disease are limited. The natural flavonoid luteolin (LUT) has significant anti-inflammatory and antioxidant properties, but its protective effect on cyclophosphamide (CYP)-induced bladder toxicity has yet to be evaluated. This study aims to explore the protective effect of LUT on CYP-induced acute cystitis in rats. Female Sprague-Dawley rats were randomly assigned to the control (CON) group, CON + LUT group, CYP group, and CYP + LUT group. A single intraperitoneal injection of CYP was administered to establish an acute hemorrhagic cystitis model. HE staining was performed to detect the degree of bladder tissue damage, and TUNEL staining was performed to count apoptotic cells. Oxidative stress indicators were measured using commercial kits, and bladder surgery was performed to assess urinary function. The levels of inflammatory cytokines, apoptosis-related indicators, TXNIP/NLRP3 pathway, and NF-κB pathway were detected by western blot. We found that LUT treatment reduced bladder bleeding, congestion, and edema caused by CYP. Compared with the CYP + LUT group, the level of apoptosis was more highly expressed in the CYP group. We also found that caspase-3, caspase-8, and Bax were significantly upregulated and Bcl-2 was downregulated after LUT treatment. In addition, LUT inhibited the activation of NF-κB signal pathway in the rat bladder tissue after CYP exposure. LUT treatment can also reduce the NLRP3 inflammasome (NLRP3, ASC, and caspase-1) and TXNIP in the bladder. Finally, LUT can reduce the increase in the urination frequency and maximum urination pressure caused by cystitis. These results indicate that LUT displays effective anti-inflammatory, antioxidant, and antiapoptotic properties in CYP-induced acute hemorrhagic cystitis rats by inhibiting the TXNIP/NLRP3 and NF-κB pathways. LUT may be a potent therapeutic agent for the prevention and treatment of hemorrhagic cystitis.
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15
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The Effect of A2E on the Uptake and Release of Calcium in the Lysosomes and Mitochondria of Human RPE Cells Exposed to Blue Light. J Ophthalmol 2021; 2021:5586659. [PMID: 34603771 PMCID: PMC8486552 DOI: 10.1155/2021/5586659] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 08/26/2021] [Accepted: 09/02/2021] [Indexed: 02/05/2023] Open
Abstract
We aimed to explore the effect of N-retinylidene-N-retinylethanolamine (A2E) on the uptake and release of calcium in lysosomes and mitochondria by establishing a model of human retinal pigment epithelial (RPE) cell injury induced by exposure to blue light. Primary human RPE cells were cultured from passages 4 to 6 and exposed to blue light at an intensity of 2000 ± 500 lux for 6 hours. After blue light exposure, the culture was maintained for 24 hours. A2E at a final concentration of 25 μM was added to the culture 2 hours before light exposure, and nifedipine at a final concentration of 10−4 M was added 1 hour before light exposure. The levels of Ca2+ in the cytosol (CaTM/2AM), mitochondria (Rhod/2AM), and lysosomes (LysoTracker Red and Fluo-3/AM) were determined. In order to measure the calcium levels in the different organelles, RPE were imaged using a laser scanning confocal microscope. Moreover, changes in the mitochondrial membrane potential were detected by flow cytometry analysis of JC-1-stained cells. The obtained results revealed that blue light illumination increased the calcium fluorescence intensity in the cytoplasm, mitochondria, and lysosomes of human RPE cells when compared with the control cells (P < 0.05). After A2E treatment, the fluorescence intensity of the calcium in the cytoplasm was further increased (P < 0.05), while that in the mitochondria and lysosomes decreased (P < 0.05). In addition, we observed that nifedipine reduced the fluorescence intensity of calcium in the RPE cells. Our results also showed that the mitochondrial membrane potential in the RPE treated with blue light and A2E was lower than that in the control, blue light, and A2E-treated cells (P < 0.05). Blue light increased calcium levels in the cytoplasm, lysosomes, and mitochondria of RPE cells. A2E damages the lysosomal and mitochondrial membranes, resulting in calcium release into the cytoplasm. Finally, our results demonstrated that both blue light and A2E treatments reduced mitochondrial membrane potential, increasing cytosolic Ca2+ levels, which can contribute to the activation of RPE death.
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Crous A, Abrahamse H. Aluminium (III) phthalocyanine chloride tetrasulphonate is an effective photosensitizer for the eradication of lung cancer stem cells. ROYAL SOCIETY OPEN SCIENCE 2021; 8:210148. [PMID: 34527268 PMCID: PMC8424323 DOI: 10.1098/rsos.210148] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 08/19/2021] [Indexed: 05/04/2023]
Abstract
Cancer stem cells (CSCs) are considered to contribute to the recurrence of lung cancer due to their stem-like nature and the involvement of genetic markers associated with drug efflux, regeneration and metastases. Photodynamic therapy (PDT) is a cost-effective and non-invasive therapeutic application that can act as an alternative therapy for lung cancer when considering CSC involvement. Stem-like cells derived from the A549 lung cancer cell line, positive for CD133, CD56 and CD44 antigen markers, were characterized, intracellular localization of aluminium (III) phthalocyanine chloride tetrasulphonate (AlPcS4Cl) determined and its anti-cancer PDT effects were evaluated. Results confirmed that isolated cells were stem cell-like and subcellular localization of AlPcS4Cl in integral organelles involved in cell homeostasis supported the destruction of CSC. AlPcS4Cl's effectivity was demonstrated with CSC eradication showing a significant increase in cytotoxicity and cell death via apoptosis, caused by a decrease in mitochondrial membrane potential. PDT could serve as a palliative treatment for lung cancer and improve prognosis by elimination of lung CSCs.
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Affiliation(s)
- Anine Crous
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, PO Box 17011, Johannesburg 2028, South Africa
| | - Heidi Abrahamse
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, PO Box 17011, Johannesburg 2028, South Africa
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Tian L, Zhang Y, Zhang H, Zhou Y, Li W, Yuan Y, Hao J, Yang L, Liu Y. Synthesis and evaluation of iridium(III) complexes on antineoplastic activity against human gastric carcinoma SGC-7901 cells. J Biol Inorg Chem 2021; 26:705-714. [PMID: 34448071 DOI: 10.1007/s00775-021-01895-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 07/19/2021] [Indexed: 12/24/2022]
Abstract
The study was intended to determine the antineoplastic effects of two new iridium(III) complexes [Ir(ppy)2(PTTP)](PF6) (1) (ppy = 2-phenylpyridine) and [Ir(piq)2(PTTP)](PF6) (2) (piq = 1-phenylisoquinoline, PTTP = 2-phenoxy-1,4,8,9-tetraazatriphenylene). In MTT assay, the ligand PTTP displayed ineffective inhibition on cell growth in SGC-7901, BEL-7402, HepG2 as well as NIH3T3 cell lines, while complexes 1 and 2 showed high cytotoxic activity on SGC-7901 cells with an IC50 value of 0.5 ± 0.1 µM and 4.4 ± 0.6 µM, respectively. Cellular uptake, cell cloning experiments, wound healing assay and cell cycle arrest indicated that the two complexes can inhibit the cell proliferation in SGC-7901 and induce cell cycle arrest at G0/G1 phase. Additionally, reactive oxygen species (ROS) and mitochondrial membrane potential suggested that the two complexes induced cell apoptosis through disrupting mitochondrial functions. Further, western blot analysis illustrated that the two complexes caused apoptosis via regulating expression levels of Bcl-2 family proteins. Moreover, complex 1 could suppress tumor growth in vivo with an inhibitory rate of 49.41%. Altogether, these results demonstrated that complexes 1 and 2 exert a potent anticancer effect against SGC-7901 cells via mitochondrial apoptotic pathway and have a potential to be developed as antineoplastic drug candidates for human gastric cancer.
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Affiliation(s)
- Li Tian
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Yuanyuan Zhang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Huiwen Zhang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Yi Zhou
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Wenlong Li
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Yuhan Yuan
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Jing Hao
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Linlin Yang
- Department of Pediatrics, Guangdong Women and Children Hospital, Guangzhou, 510010, People's Republic of China.
| | - Yunjun Liu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China.
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Li Y, Zhang Y, Wang X, Yang Q, Zhou X, Wu J, Yang X, Zhao Y, Lin R, Xie Y, Yuan J, Zheng X, Wang S. Bufalin induces mitochondrial dysfunction and promotes apoptosis of glioma cells by regulating Annexin A2 and DRP1 protein expression. Cancer Cell Int 2021; 21:424. [PMID: 34376212 PMCID: PMC8353806 DOI: 10.1186/s12935-021-02137-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 08/03/2021] [Indexed: 12/24/2022] Open
Abstract
Background Glioma is a common primary central nervous system tumour, and therapeutic drugs that can effectively improve the survival rate of patients in the clinic are lacking. Bufalin is effective in treating various tumours, but the mechanism by which it promotes the apoptosis of glioma cells is unclear. The aim of this study was to investigate the drug targets of bufalin in glioma cells and to clarify the apoptotic mechanism. Methods Cell viability and proliferation were evaluated by CCK-8 and colony formation assays. Then, the cell cycle and apoptosis, intracellular ion homeostasis, oxidative stress levels and mitochondrial damage were assessed after bufalin treatment. DARTS-PAGE technology was employed and LC–MS/MS was performed to explore the drug targets of bufalin in U251 cells. Molecular docking and western blotting were performed to identify potential targets. siRNA targeting Annexin A2 and the DRP1 protein inhibitor Mdivi-1 were used to confirm the targets of bufalin. Results Bufalin upregulated the expression of cytochrome C, cleaved caspase 3, p-Chk1 and p-p53 proteins to induce U251 cell apoptosis and cycle arrest in the S phase. Bufalin also induced oxidative stress in U251 cells, destroyed intracellular ion homeostasis, and caused mitochondrial damage. The expression of mitochondrial division-/fusion-related proteins in U251 cells was abnormal, the Annexin A2 and DRP1 proteins were translocated from the cytoplasm to mitochondria, and the MFN2 protein was released from mitochondria into the cytoplasm after bufalin treatment, disrupting the mitochondrial division/fusion balance in U251 cells. Conclusions Our research indicated that bufalin can cause Annexin A2 and DRP1 oligomerization on the surface of mitochondria and disrupt the mitochondrial division/fusion balance to induce U251 cell apoptosis. Graphic Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12935-021-02137-x.
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Affiliation(s)
- Yao Li
- Faculty of Life Science & Medicine, Key Laboratory Resource Biology & Biotechnology in Western China, Ministry of Education, Northwest University, Xi'an, 710069, Shaanxi, China
| | - Yan Zhang
- Department of Acupuncture, Xi'an Hospital of Traditional Chinese Medicine, Xi'an, 710021, Shaanxi, China
| | - Xufang Wang
- Faculty of Life Science & Medicine, Key Laboratory Resource Biology & Biotechnology in Western China, Ministry of Education, Northwest University, Xi'an, 710069, Shaanxi, China
| | - Qian Yang
- Department of Chinese Materia Medica and Natural Medicines, Air Force Medical University, Xi'an, 710032, Shaanxi, China
| | - Xuanxuan Zhou
- Department of Chinese Materia Medica and Natural Medicines, Air Force Medical University, Xi'an, 710032, Shaanxi, China
| | - Junsheng Wu
- Faculty of Life Science & Medicine, Key Laboratory Resource Biology & Biotechnology in Western China, Ministry of Education, Northwest University, Xi'an, 710069, Shaanxi, China
| | - Xu Yang
- Faculty of Life Science & Medicine, Key Laboratory Resource Biology & Biotechnology in Western China, Ministry of Education, Northwest University, Xi'an, 710069, Shaanxi, China
| | - Yani Zhao
- Department of Acupuncture, Xi'an Hospital of Traditional Chinese Medicine, Xi'an, 710021, Shaanxi, China
| | - Rui Lin
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Yanhua Xie
- Faculty of Life Science & Medicine, Key Laboratory Resource Biology & Biotechnology in Western China, Ministry of Education, Northwest University, Xi'an, 710069, Shaanxi, China
| | - Jiani Yuan
- Air Force Hospital of Western Theater Command, Chengdu, 610083, Sichuan, China.
| | - Xiaohui Zheng
- Faculty of Life Science & Medicine, Key Laboratory Resource Biology & Biotechnology in Western China, Ministry of Education, Northwest University, Xi'an, 710069, Shaanxi, China.
| | - Siwang Wang
- Faculty of Life Science & Medicine, Key Laboratory Resource Biology & Biotechnology in Western China, Ministry of Education, Northwest University, Xi'an, 710069, Shaanxi, China.
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Mitochondrial Dysfunction in Chronic Respiratory Diseases: Implications for the Pathogenesis and Potential Therapeutics. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5188306. [PMID: 34354793 PMCID: PMC8331273 DOI: 10.1155/2021/5188306] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/30/2021] [Accepted: 07/16/2021] [Indexed: 02/07/2023]
Abstract
Mitochondria are indispensable for energy metabolism and cell signaling. Mitochondrial homeostasis is sustained with stabilization of mitochondrial membrane potential, balance of mitochondrial calcium, integrity of mitochondrial DNA, and timely clearance of damaged mitochondria via mitophagy. Mitochondrial dysfunction is featured by increased generation of mitochondrial reactive oxygen species, reduced mitochondrial membrane potential, mitochondrial calcium imbalance, mitochondrial DNA damage, and abnormal mitophagy. Accumulating evidence indicates that mitochondrial dysregulation causes oxidative stress, inflammasome activation, apoptosis, senescence, and metabolic reprogramming. All these cellular processes participate in the pathogenesis and progression of chronic respiratory diseases, including chronic obstructive pulmonary disease, pulmonary fibrosis, and asthma. In this review, we provide a comprehensive and updated overview of the impact of mitochondrial dysfunction on cellular processes involved in the development of these respiratory diseases. This not only implicates mechanisms of mitochondrial dysfunction for the pathogenesis of chronic lung diseases but also provides potential therapeutic approaches for these diseases by targeting dysfunctional mitochondria.
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Pink1/PARK2/mROS-Dependent Mitophagy Initiates the Sensitization of Cancer Cells to Radiation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5595652. [PMID: 34306311 PMCID: PMC8279859 DOI: 10.1155/2021/5595652] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 05/26/2021] [Accepted: 06/20/2021] [Indexed: 01/10/2023]
Abstract
Autophagy plays a double-edged sword for cancer; particularly, mitophagy plays important roles in the selective degradation of damaged mitochondria. However, whether mitophagy is involved in killing effects of tumor cells by ionizing radiation (IR) and its underlying mechanism remain elusive. The purpose is to evaluate the effects of mitochondrial ROS (mROS) on autophagy after IR; furthermore, we hypothesized that KillerRed (KR) targeting mitochondria could induce mROS generation, subsequent mitochondrial depolarization, accumulation of Pink1, and recruitment of PARK2 to promote the mitophagy. Thereby, we would achieve a new strategy to enhance mROS accumulation and clarify the roles and mechanisms of radiosensitization by KR and IR. Our data demonstrated that IR might cause autophagy of both MCF-7 and HeLa cells, which is related to mitochondria and mROS, and the ROS scavenger N-acetylcysteine (NAC) could reduce the effects. Based on the theory, mitochondrial targeting vector sterile α- and HEAT/armadillo motif-containing protein 1- (Sarm1-) mtKR has been successfully constructed, and we found that ROS levels have significantly increased after light exposure. Furthermore, mitochondrial depolarization of HeLa cells was triggered, such as the decrease of Na+K+ ATPase, Ca2+Mg2+ ATPase, and mitochondrial respiratory complex I and III activities, and mitochondrial membrane potential (MMP) has significantly decreased, and voltage-dependent anion channel 1 (VDAC1) protein has significantly increased in the mitochondria. Additionally, HeLa cell proliferation was obviously inhibited, and the cell autophagic rates dramatically increased, which referred to the regulation of the Pink1/PARK2 pathway. These results indicated that mitophagy induced by mROS can initiate the sensitization of cancer cells to IR and might be regulated by the Pink1/PARK2 pathway.
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21
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Tu Y, Zhou Y, Zhang D, Yang J, Li X, Ji K, Wu X, Liu R, Zhang Q. Light-Induced Reactive Oxygen Species (ROS) Generator for Tumor Therapy through an ROS Burst in Mitochondria and AKT-Inactivation-Induced Apoptosis. ACS APPLIED BIO MATERIALS 2021; 4:5222-5230. [PMID: 35007004 DOI: 10.1021/acsabm.1c00386] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Mitochondria are identified as a valuable target for cancer therapy owing to their primary function in energy supply and cellular signal regulation. Mitochondria in tumor cells are depicted by excess reactive oxygen species (ROS), which lead to numerous detrimental results. Hence, mitochondria-targeting ROS-associated therapy is an optional therapeutic strategy for cancer. In this contribution, a light-induced ROS generator (TBTP) is developed for evaluation of the efficacy of mitochondria-targeting ROS-associated therapy and investigation of the mechanism underlying mitochondrial-injure-mediated therapy of tumors. TBTP serves as an efficient ROS generator with low cytotoxicity, favorable biocompatibility, excellent photostability, mitochondria-targeted properties, and NIR emission. In vivo and in vitro experiments reveal that TBTP exhibits effective anticancer potential. ROS generated from TBTP could destroy the integrity of mitochondria, downregulate ATP, decrease the mitochondrial membrane potential, secrete Cyt-c into cytoplasm, activate Caspase-3/9, and induce cell apoptosis. Moreover, RNA-seq analysis highlights that an ROS burst in mitochondria can kill tumor cells via inhibition of the AKT pathway. All these results prove that mitochondrial-targeted ROS-associated therapy hold great potential in cancer therapy.
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Affiliation(s)
- Yinuo Tu
- Affiliated Caner Hospital & Institute of Guangzhou Medical University, Guangzhou, Guangdong 510095, China.,Department of Thoracic Surgery, Huiqiao Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Yuping Zhou
- Guangdong Provincial Key Laboratory of Medical Image Processing, School of Biomedical Engineering, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Di Zhang
- Guangdong Provincial Key Laboratory of Medical Image Processing, School of Biomedical Engineering, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Jinghong Yang
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Xiang Li
- Department of Thoracic Surgery, Huiqiao Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Kaiyuan Ji
- The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong 518033, China
| | - Xu Wu
- Department of Thoracic Surgery, Huiqiao Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Ruiyuan Liu
- Guangdong Provincial Key Laboratory of Medical Image Processing, School of Biomedical Engineering, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Qianbing Zhang
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
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22
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Zhan S, Wang W, Kong L. Protective effects and mechanism of action of ruscogenin in a mouse model of ovalbumin-induced asthma. J Asthma 2021; 59:1079-1086. [PMID: 33780307 DOI: 10.1080/02770903.2021.1901914] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Ruscogenin is a natural product exhibiting anti-inflammatory, antioxidant, and anti-apoptotic effects; however, its effectiveness for asthma management has not yet been reported. The aim of this study was to explore the role of ruscogenin in airway inflammation and apoptosis in asthma. METHODS In vivo, female 6- to 8-week-old CL57 mice were sensitized to ovalbumin and challenged intranasally for 7 days. One group was gavaged with ruscogenin before ovalbumin challenge. At the end of the challenge period, airway hyperresponsiveness and airway inflammation were evaluated. Enzyme-linked immunosorbent assay was used to estimate the oxidative stress levels. A terminal deoxynucleotidyl transferase dUDP nick-end labeling assay was used to determine the extent of apoptosis. Immunohistochemistry and western blotting were performed to examine VDAC1 expression. In vitro, human bronchial epithelial (HBE) cells were treated with H2O2, ruscogenin, or disulfonate salt, and flow cytometry was used to calculate the apoptosis ratio and detect mitochondrial calcium levels. RESULTS In vivo, ruscogenin improved airway hyperresponsiveness and airway inflammation, while reducing oxidative stress, the apoptosis ratio and VDAC1 expression in asthmatic lungs. In vitro, ruscogenin attenuated apoptosis in HBE cells by decreasing the levels of VDAC1 expression and mitochondrial calcium. CONCLUSION Ruscogenin reduced oxidative stress and apoptosis in the airway epithelium by inhibiting VDAC1 expression and mitochondrial handling of calcium.
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Affiliation(s)
- Shanshan Zhan
- Department of Respiratory and Critical Care Medicine, Institute of Respiratory Diseases, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Wei Wang
- Department of Respiratory and Critical Care Medicine, Institute of Respiratory Diseases, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Lingfei Kong
- Department of Respiratory and Critical Care Medicine, Institute of Respiratory Diseases, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
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23
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Han J, Mei Z, Lu C, Qian J, Liang Y, Sun X, Pan Z, Kong D, Xu S, Liu Z, Gao Y, Qi G, Shou Y, Chen S, Cao Z, Zhao Y, Lin C, Zhao Y, Geng Y, Chen J, Yan X, Ma W, Yang G. Ultra-High Dose Rate FLASH Irradiation Induced Radio-Resistance of Normal Fibroblast Cells Can Be Enhanced by Hypoxia and Mitochondrial Dysfunction Resulting From Loss of Cytochrome C. Front Cell Dev Biol 2021; 9:672929. [PMID: 33996831 PMCID: PMC8121317 DOI: 10.3389/fcell.2021.672929] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 04/08/2021] [Indexed: 01/15/2023] Open
Abstract
Ultra-high dose rate FLASH irradiation (FLASH-IR) has got extensive attention since it may provide better protection on normal tissues while maintain tumor killing effect compared with conventional dose rate irradiation. The FLASH-IR induced protection effect on normal tissues is exhibited as radio-resistance of the irradiated normal cells, and is suggested to be related to oxygen depletion. However, the detailed cell death profile and pathways are still unclear. Presently normal mouse embryonic fibroblast cells were FLASH irradiated (∼109 Gy/s) at the dose of ∼10–40 Gy in hypoxic and normoxic condition, with ultra-fast laser-generated particles. The early apoptosis, late apoptosis and necrosis of cells were detected and analyzed at 6, 12, and 24 h post FLASH-IR. The results showed that FLASH-IR induced significant early apoptosis, late apoptosis and necrosis in normal fibroblast cells, and the apoptosis level increased with time, in either hypoxic or normoxic conditions. In addition, the proportion of early apoptosis, late apoptosis and necrosis were significantly lower in hypoxia than that of normoxia, indicating that radio-resistance of normal fibroblast cells under FLASH-IR can be enhanced by hypoxia. To further investigate the apoptosis related profile and potential pathways, mitochondria dysfunction cells resulting from loss of cytochrome c (cyt c–/–) were also irradiated. The results showed that compared with irradiated normal cells (cyt c+/+), the late apoptosis and necrosis but not early apoptosis proportions of irradiated cyt c–/– cells were significant decreased in both hypoxia and normoxia, indicating mitochondrial dysfunction increased radio-resistance of FLASH irradiated cells. Taken together, to our limited knowledge, this is the first report shedding light on the death profile and pathway of normal and cyt c–/– cells under FLASH-IR in hypoxic and normoxic circumstances, which might help us improve the understanding of the FLASH-IR induced protection effect in normal cells, and thus might potentially help to optimize the future clinical FLASH treatment.
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Affiliation(s)
- Jintao Han
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Zhusong Mei
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Chunyang Lu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Jing Qian
- Teaching and Research Section of Nuclear Medicine, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Yulan Liang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Xiaoyi Sun
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Zhuo Pan
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Defeng Kong
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Shirui Xu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Zhipeng Liu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Ying Gao
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Guijun Qi
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Yinren Shou
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Shiyou Chen
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Zhengxuan Cao
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Ye Zhao
- Teaching and Research Section of Nuclear Medicine, School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Chen Lin
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Yanying Zhao
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Yixing Geng
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Jiaer Chen
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Xueqing Yan
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China.,Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, China
| | - Wenjun Ma
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
| | - Gen Yang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics and CAPT, Peking University, Beijing, China
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24
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Hu XM, Li ZX, Lin RH, Shan JQ, Yu QW, Wang RX, Liao LS, Yan WT, Wang Z, Shang L, Huang Y, Zhang Q, Xiong K. Guidelines for Regulated Cell Death Assays: A Systematic Summary, A Categorical Comparison, A Prospective. Front Cell Dev Biol 2021; 9:634690. [PMID: 33748119 PMCID: PMC7970050 DOI: 10.3389/fcell.2021.634690] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 02/08/2021] [Indexed: 12/11/2022] Open
Abstract
Over the past few years, the field of regulated cell death continues to expand and novel mechanisms that orchestrate multiple regulated cell death pathways are being unveiled. Meanwhile, researchers are focused on targeting these regulated pathways which are closely associated with various diseases for diagnosis, treatment, and prognosis. However, the complexity of the mechanisms and the difficulties of distinguishing among various regulated types of cell death make it harder to carry out the work and delay its progression. Here, we provide a systematic guideline for the fundamental detection and distinction of the major regulated cell death pathways following morphological, biochemical, and functional perspectives. Moreover, a comprehensive evaluation of different assay methods is critically reviewed, helping researchers to make a reliable selection from among the cell death assays. Also, we highlight the recent events that have demonstrated some novel regulated cell death processes, including newly reported biomarkers (e.g., non-coding RNA, exosomes, and proteins) and detection techniques.
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Affiliation(s)
- Xi-Min Hu
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Zhi-Xin Li
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Rui-Han Lin
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Jia-Qi Shan
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Qing-Wei Yu
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Rui-Xuan Wang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Lv-Shuang Liao
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Wei-Tao Yan
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Zhen Wang
- Wuxi School of Medicine, Jiangnan University, Wuxi, China
| | - Lei Shang
- Jiangxi Research Institute of Ophthalmology and Visual Sciences, Affiliated Eye Hospital of Nanchang University, Nanchang, China
| | - Yanxia Huang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Qi Zhang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Kun Xiong
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China
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25
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Shi Y, Zhao W, Liu G, Ali T, Chen P, Liu Y, Kastelic JP, Han B, Gao J. Bacteriophages isolated from dairy farm mitigated Klebsiella pneumoniae-induced inflammation in bovine mammary epithelial cells cultured in vitro. BMC Vet Res 2021; 17:37. [PMID: 33468111 PMCID: PMC7814619 DOI: 10.1186/s12917-020-02738-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 12/29/2020] [Indexed: 12/02/2022] Open
Abstract
Background Klebsiella pneumoniae, an environmental pathogen causing mastitis in dairy cattle, is often resistant to antibiotics. K. pneumoniae was used as the host bacteria to support bacteriophage replication; 2 bacteriophages, CM8-1 and SJT-2 were isolated and considered to have therapeutic potential. In the present study, we determined the ability of these 2 bacteriophages to mitigate cytotoxicity, pathomorphological changes, inflammatory responses and apoptosis induced by K. pneumoniae (bacteriophage to K. pneumoniae MOI 1:10) in bovine mammary epithelial cells (bMECs) cultured in vitro. Results Bacteriophages reduced bacterial adhesion and invasion and cytotoxicity (lactate dehydrogenase release). Morphological changes in bMECs, including swelling, shrinkage, necrosis and hematoxylin and eosin staining of cytoplasm, were apparent 4 to 8 h after infection with K. pneumoniae, but each bacteriophage significantly suppressed damage and decreased TNF-α and IL-1β concentrations. K. pneumoniae enhanced mRNA expression of TLR4, NF-κB, TNF-α, IL-1β, IL-6, IL-8, caspase-3, caspase-9 and cyt-c in bMECs and increased apoptosis of bMECs, although these effects were mitigated by treatment with either bacteriophage for 8 h. Conclusions Bacteriophages CM8-1 and SJT-2 mitigated K. pneumoniae-induced inflammation in bMECs cultured in vitro. Therefore, the potential of these bacteriophages for treating mastitis in cows should be determined in clinical trials.
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Affiliation(s)
- Yuxiang Shi
- College of Veterinary Medicine, China Agricultural University, Yuan Ming Yuan West Road No. 2, Haidian District, 100193, Beijing, P. R. China.,College of Life Sciences and Food Engineering, Hebei University of Engineering, 056038, Handan, Hebei, P.R. China
| | - Wenpeng Zhao
- College of Veterinary Medicine, China Agricultural University, Yuan Ming Yuan West Road No. 2, Haidian District, 100193, Beijing, P. R. China
| | - Gang Liu
- College of Veterinary Medicine, China Agricultural University, Yuan Ming Yuan West Road No. 2, Haidian District, 100193, Beijing, P. R. China
| | - Tariq Ali
- College of Veterinary Medicine, China Agricultural University, Yuan Ming Yuan West Road No. 2, Haidian District, 100193, Beijing, P. R. China.,Center of Microbiology & Biotechnology, Veterinary Research Institute, Peshawar, Pakistan
| | - Peng Chen
- College of Veterinary Medicine, China Agricultural University, Yuan Ming Yuan West Road No. 2, Haidian District, 100193, Beijing, P. R. China
| | - Yongxia Liu
- College of Veterinary Medicine, Shandong Agricultural University, 271018, Taìan, China
| | - John P Kastelic
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, T2N 4N1, Calgary, AB, Canada
| | - Bo Han
- College of Veterinary Medicine, China Agricultural University, Yuan Ming Yuan West Road No. 2, Haidian District, 100193, Beijing, P. R. China.
| | - Jian Gao
- College of Veterinary Medicine, China Agricultural University, Yuan Ming Yuan West Road No. 2, Haidian District, 100193, Beijing, P. R. China.
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26
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Klein K, He K, Younes AI, Barsoumian HB, Chen D, Ozgen T, Mosaffa S, Patel RR, Gu M, Novaes J, Narayanan A, Cortez MA, Welsh JW. Role of Mitochondria in Cancer Immune Evasion and Potential Therapeutic Approaches. Front Immunol 2020; 11:573326. [PMID: 33178201 PMCID: PMC7596324 DOI: 10.3389/fimmu.2020.573326] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 09/18/2020] [Indexed: 11/13/2022] Open
Abstract
The role of mitochondria in cancer formation and progression has been studied extensively, but much remains to be understood about this complex relationship. Mitochondria regulate many processes that are known to be altered in cancer cells, from metabolism to oxidative stress to apoptosis. Here, we review the evolving understanding of the role of mitochondria in cancer cells, and highlight key evidence supporting the role of mitochondria in cancer immune evasion and the effects of mitochondria-targeted antitumor therapy. Also considered is how knowledge of the role of mitochondria in cancer can be used to design and improve cancer therapies, particularly immunotherapy and radiation therapy. We further offer critical insights into the mechanisms by which mitochondria influence tumor immune responses, not only in cancer cells but also in immune cells. Given the central role of mitochondria in the complex interactions between cancer and the immune system, high priority should be placed on developing rational strategies to address mitochondria as potential targets in future preclinical and clinical studies. We believe that targeting mitochondria may provide additional opportunities in the development of novel antitumor therapeutics.
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Affiliation(s)
- Katherine Klein
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States.,McGovern Medical School at UTHealth, Houston, TX, United States
| | - Kewen He
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States.,Department of Radiation Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Jinan, China
| | - Ahmed I Younes
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Hampartsoum B Barsoumian
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Dawei Chen
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States.,Department of Radiation Oncology, Shandong Cancer Hospital Affiliated to Shandong University, Jinan, China
| | - Tugce Ozgen
- Ankara University Faculty of Medicine, Ankara, Turkey
| | - Sara Mosaffa
- Department of Molecular Biosciences, The University of Texas at Austin, Houston, TX, United States
| | - Roshal R Patel
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Meidi Gu
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Jose Novaes
- Department of Internal Medicine, Jacobi Medical Center/Albert Einstein College of Medicine, The Bronx, NY, United States
| | - Aarthi Narayanan
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Maria Angelica Cortez
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - James W Welsh
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
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27
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Pathak GA, Polimanti R, Silzer TK, Wendt FR, Chakraborty R, Phillips NR. Genetically-regulated transcriptomics & copy number variation of proctitis points to altered mitochondrial and DNA repair mechanisms in individuals of European ancestry. BMC Cancer 2020; 20:954. [PMID: 33008348 PMCID: PMC7530964 DOI: 10.1186/s12885-020-07457-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 09/23/2020] [Indexed: 02/08/2023] Open
Abstract
Background Proctitis is an inflammation of the rectum and may be induced by radiation treatment for cancer. The genetic heritability of developing radiotoxicity and prior role of genetic variants as being associated with side-effects of radiotherapy necessitates further investigation for underlying molecular mechanisms. In this study, we investigated gene expression regulated by genetic variants, and copy number variation in prostate cancer survivors with radiotoxicity. Methods We investigated proctitis as a radiotoxic endpoint in prostate cancer patients who received radiotherapy (n = 222). We analyzed the copy number variation and genetically regulated gene expression profiles of whole-blood and prostate tissue associated with proctitis. The SNP and copy number data were genotyped on Affymetrix® Genome-wide Human SNP Array 6.0. Following QC measures, the genotypes were used to obtain gene expression by leveraging GTEx, a reference dataset for gene expression association based on genotype and RNA-seq information for prostate (n = 132) and whole-blood tissue (n = 369). Results In prostate tissue, 62 genes were significantly associated with proctitis, and 98 genes in whole-blood tissue. Six genes - CABLES2, ATP6AP1L, IFIT5, ATRIP, TELO2, and PARD6G were common to both tissues. The copy number analysis identified seven regions associated with proctitis, one of which (ALG1L2) was also associated with proctitis based on transcriptomic profiles in the whole-blood tissue. The genes identified via transcriptomics and copy number variation association were further investigated for enriched pathways and gene ontology. Some of the enriched processes were DNA repair, mitochondrial apoptosis regulation, cell-to-cell signaling interaction processes for renal and urological system, and organismal injury. Conclusions We report gene expression changes based on genetic polymorphisms. Integrating gene-network information identified these genes to relate to canonical DNA repair genes and processes. This investigation highlights genes involved in DNA repair processes and mitochondrial malfunction possibly via inflammation. Therefore, it is suggested that larger studies will provide more power to infer the extent of underlying genetic contribution for an individual’s susceptibility to developing radiotoxicity.
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Affiliation(s)
- Gita A Pathak
- Department of Microbiology, Immunology & Genetics, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd, Fort Worth, TX, 76107, USA
| | - Renato Polimanti
- Department of Psychiatry, Yale School of Medicine, Yale University, New Haven, CT, USA.,Veteran Affairs Connecticut Healthcare System, West Haven, CT, USA
| | - Talisa K Silzer
- Department of Microbiology, Immunology & Genetics, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd, Fort Worth, TX, 76107, USA
| | - Frank R Wendt
- Department of Psychiatry, Yale School of Medicine, Yale University, New Haven, CT, USA.,Veteran Affairs Connecticut Healthcare System, West Haven, CT, USA
| | - Ranajit Chakraborty
- Department of Microbiology, Immunology & Genetics, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd, Fort Worth, TX, 76107, USA
| | - Nicole R Phillips
- Department of Microbiology, Immunology & Genetics, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd, Fort Worth, TX, 76107, USA.
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28
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Ilimaquinone Induces the Apoptotic Cell Death of Cancer Cells by Reducing Pyruvate Dehydrogenase Kinase 1 Activity. Int J Mol Sci 2020; 21:ijms21176021. [PMID: 32825675 PMCID: PMC7504051 DOI: 10.3390/ijms21176021] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/07/2020] [Accepted: 08/20/2020] [Indexed: 12/11/2022] Open
Abstract
In cancer cells, aerobic glycolysis rather than oxidative phosphorylation (OxPhos) is generally preferred for the production of ATP. In many cancers, highly expressed pyruvate dehydrogenase kinase 1 (PDK1) reduces the activity of pyruvate dehydrogenase (PDH) by inducing the phosphorylation of its E1α subunit (PDHA1) and subsequently, shifts the energy metabolism from OxPhos to aerobic glycolysis. Thus, PDK1 has been regarded as a target for anticancer treatment. Here, we report that ilimaquinone (IQ), a sesquiterpene quinone isolated from the marine sponge Smenospongia cerebriformis, might be a novel PDK1 inhibitor. IQ decreased the cell viability of human and murine cancer cells, such as A549, DLD-1, RKO, and LLC cells. The phosphorylation of PDHA1, the substrate of PDK1, was reduced by IQ in the A549 cells. IQ decreased the levels of secretory lactate and increased oxygen consumption. The anticancer effect of IQ was markedly reduced in PDHA1-knockout cells. Computational simulation and biochemical assay revealed that IQ interfered with the ATP binding pocket of PDK1 without affecting the interaction of PDK1 and the E2 subunit of the PDH complex. In addition, similar to other pyruvate dehydrogenase kinase inhibitors, IQ induced the generation of mitochondrial reactive oxygen species (ROS) and depolarized the mitochondrial membrane potential in the A549 cells. The apoptotic cell death induced by IQ treatment was rescued in the presence of MitoTEMPO, a mitochondrial ROS inhibitor. In conclusion, we suggest that IQ might be a novel candidate for anticancer therapeutics that act via the inhibition of PDK1 activity.
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29
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Yu P, Ma S, Dai X, Cao F. Elabela alleviates myocardial ischemia reperfusion-induced apoptosis, fibrosis and mitochondrial dysfunction through PI3K/AKT signaling. Am J Transl Res 2020; 12:4467-4477. [PMID: 32913520 PMCID: PMC7476165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 06/26/2020] [Indexed: 06/11/2023]
Abstract
Myocardial ischemia/reperfusion (I/R) injury is a common cardiovascular disease with high morbidity and mortality globally, which derives from acute myocardial infarction and coronary artery disease. Elabela has been proved to bind to apelin receptors in the heart. The present study aimed to investigate the protective effects of Elabela in myocardial I/R injury and illustrating the potential mechanisms. In this study, the rat I/R model was established in vivo. Following treatment with Elabela, the histopathological changes of heart tissue were evaluated by the hematoxylin and eosin- or Masson's trichrome staining. Apoptosis of heart tissue was examined using TUNEL staining. The expression of type I or III collagen and apoptosis-associated proteins was measured using western blotting. Moreover, myocardial ultrastructure in myocardium was detected via electron microscopy analysis. H9c2 cells were treated with hypoxia/reoxygenation (H/R) to mimic the myocardial I/R injury in vitro. After treatment with Elabela or Elabela combined with LY294002, the levels of oxidative stress and apoptosis were examined. The results revealed that Elabela significantly improved the pathological changes of rat myocardial tissues induced by I/R. Additionally, Elabela treatment reduced cardiomyocyte I/R induced fibrosis and apoptosis as well as ameliorated mitochondrial dysfunction in animal and cells. Within inhibition of PI3K pathway, the protective effects of Elabela was reversed. Taken together, these findings demonstrated that Elabela could protect against fibrosis, apoptosis and oxidative stress via PI3K/ATK signaling pathway in cardiac ischemia reperfusion.
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Affiliation(s)
- Peng Yu
- Department of Cardiology, Xijing Hospital, Air Force Medical UniversityXi’an 710032, China
| | - Sicong Ma
- Department of Cardiology, Xijing Hospital, Air Force Medical UniversityXi’an 710032, China
| | - Xinchun Dai
- Department of Cardiology, Xijing Hospital, Air Force Medical UniversityXi’an 710032, China
| | - Feng Cao
- National Clinical Research Center for Geriatric Diseases, 2nd Medical Center, Chinese PLA General HospitalBeijing 100853, China
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Effective Gold Nanoparticle-Antibody-Mediated Drug Delivery for Photodynamic Therapy of Lung Cancer Stem Cells. Int J Mol Sci 2020; 21:ijms21113742. [PMID: 32466428 PMCID: PMC7311980 DOI: 10.3390/ijms21113742] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/19/2020] [Accepted: 05/21/2020] [Indexed: 12/12/2022] Open
Abstract
Cancer stem cells (CSCs) are a leading contributor to lung cancer mortality rates. CSCs are responsible for tumor growth and recurrence through inhibition of drug-induced cell death, decreasing the effect of traditional cancer therapy and photodynamic therapy (PDT). PDT can be improved to successfully treat lung cancer by using gold nanoparticles (AuNPs), due to their size and shape, which have been shown to facilitate drug delivery and retention, along with the targeted antibody (Ab) mediated selection of CSCs. In this study, a nanobioconjugate (NBC) was constructed, using a photosensitizer (PS) (AlPcS4Cl), AuNPs and Abs. The NBC was characterized, using spectroscopy techniques. Photodynamic effects of the NBC on lung CSCs was evaluated, using biochemical assays 24 h post-irradiation, in order to establish its anticancer effect. Results showed successful conjugation of the nanocomposite. Localization of the NBC was seen to be in integral organelles involved in cell homeostasis. Biochemical responses of lung CSCs treated using AlPcS4Cl-AuNP and AlPcS4Cl-AuNP-Ab showed significant cell toxicity and cell death, compared to free AlPcS4Cl. The PDT effects were enhanced when using the NBC, showing significant lung CSC destruction to the point of eradication.
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Wang W, Wang J, Zhang J, Taq W, Zhang Z. miR‑222 induces apoptosis in human intervertebral disc nucleus pulposus cells by targeting Bcl‑2. Mol Med Rep 2019; 20:4875-4882. [PMID: 31638197 PMCID: PMC6854584 DOI: 10.3892/mmr.2019.10732] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 08/06/2019] [Indexed: 12/14/2022] Open
Abstract
Intervertebral disc degeneration (IDD) is characterized by abnormal induction of apoptosis in intervertebral disc nucleus pulposus (NP) cells. Previous studies indicated that miR-222 was upregulated in patients with rheumatoid arthritis. However, the effects of miR-222 in IDD remain unclear. The present study aimed to demonstrate the role of miR-222 in NP cells. The levels of miR-222 in patients with IDD were measured by reverse transcription-quantitative PCR. Cell Counting Kit-8 and western blotting assays were used to detect cell proliferation and apoptosis-associated protein levels, respectively. In addition, luciferase reporter assays were performed to validate the predicted target genes of miR-222. miR-222 was significantly upregulated in patients with IDD. Overexpression of miR-222 inhibited cell proliferation and induced cell apoptosis. Moreover, overexpression of miR-222 resulted in an upregulation in the levels of Bax and cleaved caspase 3, and a downregulation in the levels of Bcl-2 in NP cells. The luciferase reporter assays demonstrated that Bcl-2 is a target of miR-222. Furthermore, overexpression of miR-222 increased the levels of cytochrome c, apoptotic protease activating factor-1 and cleaved caspase 9 in NP cells. Conversely, downregulation of miR-222 could promote the proliferation of NP cells. The present data demonstrated that miR-222 induced apoptosis in NP cells by directly targeting Bcl-2. Therefore, miR-222 may act as a potential therapeutic target for the treatment of IDD.
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Affiliation(s)
- Wei Wang
- Department of Rehabilitation, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121000, P.R. China
| | - Jian Wang
- Department of Orthopedics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121000, P.R. China
| | - Jiayi Zhang
- Department of Orthopedics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121000, P.R. China
| | - Wei Taq
- Department of General Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121000, P.R. China
| | - Zhenxing Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning 121000, P.R. China
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Ma RD, Zhou GJ, Qu M, Yi JH, Tang YL, Yang XY, Nie YX, Gu HF. Corticosterone induces neurotoxicity in PC12 cells via disrupting autophagy flux mediated by AMPK/mTOR signaling. CNS Neurosci Ther 2019; 26:167-176. [PMID: 31423743 PMCID: PMC6978254 DOI: 10.1111/cns.13212] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/31/2019] [Accepted: 08/04/2019] [Indexed: 12/14/2022] Open
Abstract
Aims Our previous study indicated that chronic stress caused autophagy impairment and subsequent neuron apoptosis in hippocampus. However, the mechanism underlying the stress‐induced damage to neurons is unclear. In present work, we investigated whether stress‐level glucocorticoids (GCs) GCs promoted PC12 cell damage via AMPK/mTOR signaling‐mediated autophagy. Methods Chronic stress‐induced PC12 cell injury model was built by treatment with high level corticosterone (CORT). Cell injury was evaluated by flow cytometry assay and transmission electron microscopy observation. Results Autophagy flux was measured based on the changes in LC3‐II and P62 protein expressions, and the color alteration of mCherry‐GFP‐LC3‐II transfection. Our results showed that CORT not only increased cell injury and apoptosis, but also dysregulated AMPK/mTOR signaling‐mediated autophagy flux, as indicated by the upregulated expression of LC3‐II and P62 proteins, and the lowered ration of autolysosomes to autophagosomes. Mechanistically, our results demonstrated that autophagy activation by AMPK activator metformin or mTOR inhibitor rapamycin obviously promotes cell survival and autophagy flux, improved mitochondrial ultrastructure, and reduced expression of Cyt‐C and caspase‐3 in CORT‐induced PC12 cells. Conclusion These results indicate that high CORT triggers PC12 cell damage through disrupting AMPK/mTOR‐mediated autophagy flux. Targeting this signaling may be a promising approach to protect against high CORT and chronic stress‐induced neuronal impairment.
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Affiliation(s)
- Run-Dong Ma
- Department of Neurology of the First Affiliated Hospital, University of South China, Hengyang, China
| | - Gui-Juan Zhou
- Department of Neurology of the First Affiliated Hospital, University of South China, Hengyang, China
| | - Miao Qu
- Department of Physiology & Institute of Neuroscience, University of South China, Hengyang, China
| | - Ji-Hong Yi
- Institute of Neuroscience of the First Affiliated Hospital, University of South China, Hengyang, China
| | - Ya-Ling Tang
- Department of Physiology & Institute of Neuroscience, University of South China, Hengyang, China
| | - Xiang-Yi Yang
- Department of Neurology of the First Affiliated Hospital, University of South China, Hengyang, China
| | - Ya-Xiong Nie
- Department of Neurology of the First Affiliated Hospital, University of South China, Hengyang, China
| | - Hong-Feng Gu
- Department of Physiology & Institute of Neuroscience, University of South China, Hengyang, China
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