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Zhao S, Meng Y, Cai W, Luo Q, Gao H, Shen Q, Shi D. Docosahexaenoic Acid Coordinating with Sodium Selenite Promotes Paraptosis in Colorectal Cancer Cells by Disrupting the Redox Homeostasis and Activating the MAPK Pathway. Nutrients 2024; 16:1737. [PMID: 38892670 PMCID: PMC11174406 DOI: 10.3390/nu16111737] [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: 05/13/2024] [Revised: 05/27/2024] [Accepted: 05/30/2024] [Indexed: 06/21/2024] Open
Abstract
Tumor cells are characterized by a delicate balance between elevated oxidative stress and enhanced antioxidant capacity. This intricate equilibrium, maintained within a threshold known as redox homeostasis, offers a unique perspective for cancer treatment by modulating reactive oxygen species (ROS) levels beyond cellular tolerability, thereby disrupting this balance. However, currently used chemotherapy drugs require larger doses to increase ROS levels beyond the redox homeostasis threshold, which may cause serious side effects. How to disrupt redox homeostasis in cancer cells more effectively remains a challenge. In this study, we found that sodium selenite and docosahexaenoic acid (DHA), a polyunsaturated fatty acid extracted from marine fish, synergistically induced cytotoxic effects in colorectal cancer (CRC) cells. Physiological doses of DHA simultaneously upregulated oxidation and antioxidant levels within the threshold range without affecting cell viability. However, it rendered the cells more susceptible to reaching the upper limit of the threshold of redox homeostasis, facilitating the elevation of ROS levels beyond the threshold by combining with low doses of sodium selenite, thereby disrupting redox homeostasis and inducing MAPK-mediated paraptosis. This study highlights the synergistic anticancer effects of sodium selenite and DHA, which induce paraptosis by disrupting redox homeostasis in tumor cells. These findings offer a novel strategy for more targeted and less toxic cancer therapies for colorectal cancer treatment.
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Affiliation(s)
- Sheng Zhao
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Yuzhou Meng
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Wenxun Cai
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Qiwen Luo
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Hongyang Gao
- Institute of Electronmicroscopy, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Qiang Shen
- Institute of Electronmicroscopy, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Dongyun Shi
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
- Free Radical Regulation and Application Research Center of Fudan University, Shanghai 200032, China
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O’Neill EJ, Sze NSK, MacPherson REK, Tsiani E. Carnosic Acid against Lung Cancer: Induction of Autophagy and Activation of Sestrin-2/LKB1/AMPK Signalling. Int J Mol Sci 2024; 25:1950. [PMID: 38396629 PMCID: PMC10888478 DOI: 10.3390/ijms25041950] [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: 12/10/2023] [Revised: 01/27/2024] [Accepted: 02/03/2024] [Indexed: 02/25/2024] Open
Abstract
Non-small cell lung cancer (NSCLC) represents 80% of all lung cancer cases and is characterized by low survival rates due to chemotherapy and radiation resistance. Novel treatment strategies for NSCLC are urgently needed. Liver kinase B1 (LKB1), a tumor suppressor prevalently mutated in NSCLC, activates AMP-activated protein kinase (AMPK) which in turn inhibits mammalian target of rapamycin complex 1 (mTORC1) and activates unc-51 like autophagy activating kinase 1 (ULK1) to promote autophagy. Sestrin-2 is a stress-induced protein that enhances LKB1-dependent activation of AMPK, functioning as a tumor suppressor in NSCLC. In previous studies, rosemary (Rosmarinus officinalis) extract (RE) activated the AMPK pathway while inhibiting mTORC1 to suppress proliferation, survival, and migration, leading to the apoptosis of NSCLC cells. In the present study, we investigated the anticancer potential of carnosic acid (CA), a bioactive polyphenolic diterpene compound found in RE. The treatment of H1299 and H460 NSCLC cells with CA resulted in concentration and time-dependent inhibition of cell proliferation assessed with crystal violet staining and 3H-thymidine incorporation, and concentration-dependent inhibition of survival, assessed using a colony formation assay. Additionally, CA induced apoptosis of H1299 cells as indicated by decreased B-cell lymphoma 2 (Bcl-2) levels, increased cleaved caspase-3, -7, poly (ADP-ribose) polymerase (PARP), Bcl-2-associated X protein (BAX) levels, and increased nuclear condensation. These antiproliferative and proapoptotic effects coincided with the upregulation of sestrin-2 and the phosphorylation/activation of LKB1 and AMPK. Downstream of AMPK signaling, CA increased levels of autophagy marker light chain 3 (LC3), an established marker of autophagy; inhibiting autophagy with 3-methyladenine (3MA) blocked the antiproliferative effect of CA. Overall, these data indicate that CA can inhibit NSCLC cell viability and that the underlying mechanism of action of CA involves the induction of autophagy through a Sestrin-2/LKB1/AMPK signaling cascade. Future experiments will use siRNA and small molecule inhibitors to better elucidate the role of these signaling molecules in the mechanism of action of CA as well as tumor xenograft models to assess the anticancer properties of CA in vivo.
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Affiliation(s)
| | | | | | - Evangelia Tsiani
- Department of Health Sciences, Faculty of Applied Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada; (E.J.O.); (N.S.K.S.); (R.E.K.M.)
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3
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Jayathilake AG, Luwor RB, Nurgali K, Su XQ. Molecular Mechanisms Associated with the Inhibitory Role of Long Chain n-3 PUFA in Colorectal Cancer. Integr Cancer Ther 2024; 23:15347354241243024. [PMID: 38708673 PMCID: PMC11072084 DOI: 10.1177/15347354241243024] [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: 10/13/2023] [Revised: 02/14/2024] [Accepted: 03/11/2024] [Indexed: 05/07/2024] Open
Abstract
Colorectal cancer (CRC) is the third leading cause of cancer-related death in the world. Multiple evidence suggests that there is an association between excess fat consumption and the risk of CRC. The long chain n-3 polyunsaturated fatty acids (LC n-3 PUFA), especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are essential for human health, and both in vitro and in vivo studies have shown that these fatty acids can prevent CRC development through various molecular mechanisms. These include the modulation of arachidonic acid (AA) derived prostaglandin synthesis, alteration of growth signaling pathways, arrest of the cell cycle, induction of cell apoptosis, suppression of angiogenesis and modulation of inflammatory response. Human clinical studies found that LC n-3 PUFA combined with chemotherapeutic agents can improve the efficacy of treatment and reduce the dosage of chemotherapy and associated side effects. In this review, we discuss comprehensively the anti-cancer effects of LC n-3 PUFA on CRC, with a main focus on the underlying molecular mechanisms.
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Affiliation(s)
| | - Rodney Brain Luwor
- The University of Melbourne, Melbourne, VIC, Australia
- Fiona Elsey Cancer Research Institute, Ballarat, VIC, Australia
| | - Kulmira Nurgali
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
- The University of Melbourne, Melbourne, VIC, Australia
- Australian Institute for Muscular Skeletal Science (AIMSS), Melbourne, VIC, Australia
| | - Xiao Qun Su
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
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Fan R, Wang S, Wu Y, Feng Y, Gao M, Cao Y, Ma X, Xie S, Wang C, Gao L, Wang Y, Dai F. Activation of endoplasmic reticulum stress by harmine suppresses the growth of esophageal squamous cell carcinoma. Phytother Res 2023; 37:4655-4673. [PMID: 37525965 DOI: 10.1002/ptr.7933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 05/16/2023] [Accepted: 06/21/2023] [Indexed: 08/02/2023]
Abstract
The worldwide overall 5-year survival rate of esophageal squamous cell carcinoma (ESCC) patients is less than 20%, and novel therapeutic strategies for these patients are urgently needed. Harmine is a natural β-carboline alkaloid, which received great interest in cancer research because of its biological and anti-tumor activities. The aim of this study is to examine the effects of harmine on ESCC and its mechanism. We investigated the effects of harmine on proliferation, cell cycle, apoptosis, and tumor growth in vivo. RNA sequencing (RNA-seq), real-time PCR, and western blotting were used to detect the mechanism. Harmine inhibited ESCC cell growth in vitro and tumor growth in vivo. Differentially expressed genes in harmine-treated ESCC cells were mainly involved in protein processing in the endoplasmic reticulum (ER). Real-time PCR and western blotting confirmed harmine-induced cellular ER stress. CRISPR-Cas9 knockout of C/EBP homologous protein (CHOP) abolished harmine-induced expression of death receptor 5 and apoptosis. Harmine also induced the expression of CHOP-mediated sestrin-2, which in turn contributes to autophagosome formation via suppressing the AMP-activated protein kinase-protein kinase B-mammalian target of rapamycin signaling pathway. In conclusion, our results demonstrate that harmine inhibits the growth of ESCC through its regulation of ER stress, suggesting that it is a promising candidate for ESCC treatment.
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Affiliation(s)
- Ronghui Fan
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan, China
- School of Life Sciences, Henan University, Kaifeng, Henan, China
| | - Senzhen Wang
- School of Life Sciences, Henan University, Kaifeng, Henan, China
| | - Yalan Wu
- School of Biomedical Sciences, Heart and Vascular Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Histology and Embryology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Yongli Feng
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan, China
| | - Mengke Gao
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan, China
| | - Yue Cao
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan, China
| | - Xiaoxuan Ma
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan, China
| | - Songqiang Xie
- School of Pharmacy, Henan University, Kaifeng, Henan, China
| | - Chaojie Wang
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan, China
| | - Lei Gao
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan, China
- Joint International Research Laboratory of Food & Medicine Resource Function, Henan University, Kaifeng, Henan, China
| | - Yanming Wang
- School of Life Sciences, Henan University, Kaifeng, Henan, China
| | - Fujun Dai
- Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan, China
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Amiri M, Molavi O, Sabetkam S, Jafari S, Montazersaheb S. Stimulators of immunogenic cell death for cancer therapy: focusing on natural compounds. Cancer Cell Int 2023; 23:200. [PMID: 37705051 PMCID: PMC10500939 DOI: 10.1186/s12935-023-03058-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 09/07/2023] [Indexed: 09/15/2023] Open
Abstract
A growing body of evidence indicates that the anticancer effect of the immune system can be activated by the immunogenic modulation of dying cancer cells. Cancer cell death, as a result of the activation of an immunomodulatory response, is called immunogenic cell death (ICD). This regulated cell death occurs because of increased immunogenicity of cancer cells undergoing ICD. ICD plays a crucial role in stimulating immune system activity in cancer therapy. ICD can therefore be an innovative route to improve anticancer immune responses associated with releasing damage-associated molecular patterns (DAMPs). Several conventional and chemotherapeutics, as well as preclinically investigated compounds from natural sources, possess immunostimulatory properties by ICD induction. Natural compounds have gained much interest in cancer therapy owing to their low toxicity, low cost, and inhibiting cancer cells by interfering with different mechanisms, which are critical in cancer progression. Therefore, identifying natural compounds with ICD-inducing potency presents agents with promising potential in cancer immunotherapy. Naturally derived compounds are believed to act as immunoadjuvants because they elicit cancer stress responses and DAMPs. Acute exposure to DAMP molecules can activate antigen-presenting cells (APCs), such as dendritic cells (DCs), which leads to downstream events by cytotoxic T lymphocytes (CTLs) and natural killer cells (NKs). Natural compounds as inducers of ICD may be an interesting approach to ICD induction; however, parameters that determine whether a compound can be used as an ICD inducer should be elucidated. Here, we aimed to discuss the impact of multiple ICD inducers, mainly focusing on natural agents, including plant-derived, marine molecules, and bacterial-based compounds, on the release of DAMP molecules and the activation of the corresponding signaling cascades triggering immune responses. In addition, the potential of synthetic agents for triggering ICD is also discussed.
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Affiliation(s)
- Mina Amiri
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ommoleila Molavi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shahnaz Sabetkam
- Department of Anatomy, Faculty of Medicine, university of Kyrenia, Kyrenia, Northern Cyprus
- Department of Anatomy and histopathology, Faculty of medicine, Tabriz medical sciences, Islamic Azad University, Tabriz, Iran
| | - Sevda Jafari
- Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Soheila Montazersaheb
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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Grigorova N, Ivanova Z, Vachkova E, Petrova V, Penev T. DHA-Provoked Reduction in Adipogenesis and Glucose Uptake Could Be Mediated by Gps2 Upregulation in Immature 3T3-L1 Cells. Int J Mol Sci 2023; 24:13325. [PMID: 37686130 PMCID: PMC10487817 DOI: 10.3390/ijms241713325] [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: 08/04/2023] [Revised: 08/24/2023] [Accepted: 08/26/2023] [Indexed: 09/10/2023] Open
Abstract
The signaling pathway of fatty acids in the context of obesity is an extensively explored topic, yet their primary mechanism of action remains incompletely understood. This study aims to examine the effect of docosahexaenoic acid (DHA) on some crucial aspects of adipogenesis in differentiating 3T3-L1 cells, using palmitic acid-treated (PA), standard differentiated, and undifferentiated adipocytes as controls. Employing 60 µM DHA or PA, 3T3-L1 preadipocytes were treated from the onset of adipogenesis, with negative and positive controls included. After eight days, we performed microscopic observations, cell viability assays, the determination of adiponectin concentration, intracellular lipid accumulation, and gene expression analysis. Our findings demonstrated that DHA inhibits adipogenesis, lipolysis, and glucose uptake by suppressing peroxisome proliferator-activated receptor gamma (Pparg) and G-protein coupled receptor 120 (Gpr120) gene expression. Cell cytotoxicity was ruled out as a causative factor, and β-oxidation involvement was suspected. These results challenge the conventional belief that omega-3 fatty acids, acting as Pparg and Gpr120 agonists, promote adipogenesis and enhance insulin-dependent glucose cell flux. Moreover, we propose a novel hypothesis suggesting the key role of the co-repressor G protein pathway suppressor 2 in mediating this process. Additional investigations are required to elucidate the molecular mechanisms driving DHA's anti-adipogenic effect and its broader health implications.
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Affiliation(s)
- Natalia Grigorova
- Department of Pharmacology, Animal Physiology, Biochemistry and Chemistry, Faculty of Veterinary Medicine, Trakia University, 6000 Stara Zagora, Bulgaria; (Z.I.); (E.V.); (V.P.)
| | - Zhenya Ivanova
- Department of Pharmacology, Animal Physiology, Biochemistry and Chemistry, Faculty of Veterinary Medicine, Trakia University, 6000 Stara Zagora, Bulgaria; (Z.I.); (E.V.); (V.P.)
| | - Ekaterina Vachkova
- Department of Pharmacology, Animal Physiology, Biochemistry and Chemistry, Faculty of Veterinary Medicine, Trakia University, 6000 Stara Zagora, Bulgaria; (Z.I.); (E.V.); (V.P.)
| | - Valeria Petrova
- Department of Pharmacology, Animal Physiology, Biochemistry and Chemistry, Faculty of Veterinary Medicine, Trakia University, 6000 Stara Zagora, Bulgaria; (Z.I.); (E.V.); (V.P.)
| | - Toncho Penev
- Department of Ecology and Animal Hygiene, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria;
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7
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Peña M, Mesas C, Perazzoli G, Martínez R, Porres JM, Doello K, Prados J, Melguizo C, Cabeza L. Antiproliferative, Antioxidant, Chemopreventive and Antiangiogenic Potential of Chromatographic Fractions from Anemonia sulcata with and without Its Symbiont Symbiodinium in Colorectal Cancer Therapy. Int J Mol Sci 2023; 24:11249. [PMID: 37511009 PMCID: PMC10379856 DOI: 10.3390/ijms241411249] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/06/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
Anemonia sulcata may be a source of marine natural products (MNPs) due to the antioxidant and antitumor activity of its crude homogenates shown in vitro in colon cancer cells. A bioguided chromatographic fractionation assay of crude Anemonia sulcata homogenates with and without its symbiont Symbiodinium was performed to characterize their bioactive composition and further determine their biological potential for the management of colorectal cancer (CRC). The 20% fractions retained the in vitro antioxidant activity previously reported for homogenates. As such, activation of antioxidant and detoxifying enzymes was also evaluated. The 40% fractions showed the greatest antiproliferative activity in T84 cells, synergistic effects with 5-fluoruracil and oxaliplatin, overexpression of apoptosis-related proteins, cytotoxicity on tumorspheres, and antiangiogenic activity. The predominantly polar lipids and toxins tentatively identified in the 20% and 40% fractions could be related to their biological activity in colon cancer cells although further characterizations of the active fractions are necessary to isolate and purify the bioactive compounds.
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Affiliation(s)
- Mercedes Peña
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Biosanitary Institute of Granada (ibs.GRANADA), SAS-University of Granada, 18014 Granada, Spain
| | - Cristina Mesas
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Biosanitary Institute of Granada (ibs.GRANADA), SAS-University of Granada, 18014 Granada, Spain
| | - Gloria Perazzoli
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Biosanitary Institute of Granada (ibs.GRANADA), SAS-University of Granada, 18014 Granada, Spain
| | - Rosario Martínez
- Department of Physiology, Institute of Nutrition and Food Technology (INyTA), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
| | - Jesús M Porres
- Department of Physiology, Institute of Nutrition and Food Technology (INyTA), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
| | - Kevin Doello
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Biosanitary Institute of Granada (ibs.GRANADA), SAS-University of Granada, 18014 Granada, Spain
- Medical Oncology Service, Virgen de las Nieves Hospital, 18016 Granada, Spain
| | - Jose Prados
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Biosanitary Institute of Granada (ibs.GRANADA), SAS-University of Granada, 18014 Granada, Spain
| | - Consolación Melguizo
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Biosanitary Institute of Granada (ibs.GRANADA), SAS-University of Granada, 18014 Granada, Spain
| | - Laura Cabeza
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Biosanitary Institute of Granada (ibs.GRANADA), SAS-University of Granada, 18014 Granada, Spain
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Ke X, Yu S, Situ S, Lin Z, Yuan Y. Morroniside inhibits Beclin1-dependent autophagic death and Bax-dependent apoptosis in cardiomyocytes through repressing BCL2 phosphorylation. In Vitro Cell Dev Biol Anim 2023:10.1007/s11626-023-00768-0. [PMID: 37155079 DOI: 10.1007/s11626-023-00768-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 04/13/2023] [Indexed: 05/10/2023]
Abstract
Morroniside can prevent myocardial injury caused by ischemia and hypoxia, which can be used to treat acute myocardial infarction (AMI). Hypoxia can cause apoptosis and autophagic death of cardiomyocytes. Morroniside has the ability to inhibit apoptosis and autophagy. However, the relationship between Morroniside-protected cardiomyocytes and two forms of death is unclear. The effects of Morroniside on the proliferation, apoptosis level, and autophagic activity of rat cardiomyocyte line H9c2 under hypoxia were first observed. Next, the roles of Morroniside in the phosphorylation of JNK and BCL2, BCL2-Beclin1, and BCL2-Bax complexes as well as mitochondrial membrane potential in H9c2 cells were evaluated upon hypoxia. Finally, the significance of BCL2 or JNK in Morroniside-regulated autophagy, apoptosis, and proliferation in H9c2 cells was assessed by combining Morroniside and BCL2 competitive inhibitor (ABT-737) or JNK activator (Anisomycin). Our results showed that hypoxia promoted autophagy and apoptosis of H9c2 cells, and inhibited their proliferation. However, Morroniside could block the effect of hypoxia on H9c2 cells. In addition, Morroniside could inhibit JNK phosphorylation, BCL2 phosphorylation at the Ser70 and Ser87 sites, and the dissociation of BCL2-Beclin1 and BCL2-Bax complexes in H9c2 cells upon hypoxia. Moreover, the reduction of mitochondrial membrane potential in H9c2 cells caused by hypoxia was improved by Morroniside administration. Importantly, the inhibited autophagy, apoptosis, and promoted proliferation in H9c2 cells by Morroniside were reversed by the application of ABT-737 or Anisomycin. Overall, Morroniside inhibits Beclin1-dependent autophagic death and Bax-dependent apoptosis via JNK-mediated BCL2 phosphorylation, thereby improving the survival of cardiomyocytes under hypoxia.
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Affiliation(s)
- Xueping Ke
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, China
- The Sixth Affiliated Hospital, School of Medicine, South China University of Technology, Foshan, 528200, China
| | - Shicheng Yu
- Department of Medicine, Liwan Central Hospital of Guangzhou, Guangzhou, 510145, China
| | - Shubiao Situ
- Department of Medicine, Liwan Central Hospital of Guangzhou, Guangzhou, 510145, China
| | - Zhenqian Lin
- Department of Cardiology, Henan Provincial Chest Hospital, Zhengzhou, 450008, Henan, China
| | - Yiqiang Yuan
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, China.
- Department of Cardiology, Zheng Zhou NO.7 People's Hospital, No.17, Jingnan 5th Road, Zhengzhou Economic and Technological Development Zone, Zhengzhou, 450016, China.
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A cross-talk between sestrins, chronic inflammation and cellular senescence governs the development of age-associated sarcopenia and obesity. Ageing Res Rev 2023; 86:101852. [PMID: 36642190 DOI: 10.1016/j.arr.2023.101852] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 12/20/2022] [Accepted: 01/10/2023] [Indexed: 01/15/2023]
Abstract
The rapid increase in both the lifespan and proportion of older adults is accompanied by the unprecedented rise in age-associated chronic diseases, including sarcopenia and obesity. Aging is also manifested by increased susceptibility to multiple endogenous and exogenous stresses enabling such chronic conditions to develop. Among the main physiological regulators of cellular adaption to various stress stimuli, such as DNA damage, hypoxia, and oxidative stress, are sestrins (Sesns), a family of three evolutionarily conserved proteins, Sesn1, 2, and 3. Age-associated sarcopenia and obesity are characterized by two key processes: (i) accumulation of senescent cells in the skeletal muscle and adipose tissue and (ii) creation of a systemic, chronic, low-grade inflammation (SCLGI). Presumably, failed SCLGI resolution governs the development of these chronic conditions. Noteworthy, Sesns activate senolytics, which are agents that selectively eliminate senescent cells, as well as specialized pro-resolving mediators, which are factors that physiologically provide inflammation resolution. Sesns reveal clear beneficial effects in pre-clinical models of sarcopenia and obesity. Based on these observations, we propose a novel treatment strategy for age-associated sarcopenia and obesity, complementary to the conventional therapeutic modalities: Sesn activation, SCLGI resolution, and senescent cell elimination.
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SESN2 Could Be a Potential Marker for Diagnosis and Prognosis in Glioma. Genes (Basel) 2023; 14:genes14030701. [PMID: 36980973 PMCID: PMC10048065 DOI: 10.3390/genes14030701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 02/27/2023] [Accepted: 03/09/2023] [Indexed: 03/18/2023] Open
Abstract
(1) Background: Glioma is among the most common brain tumors, and is difficult to eradicate with current therapeutic strategies due to its highly invasive and aggressive characteristics. Sestrin2 (SESN2) is an autophagy inducer. The effect of SESN2 on glioma is controversial and unclear. (2) Methods: We downloaded related RNA-seq data from the TCGA and GTEx databases. Bioinformatic analyses including differential gene expression analysis, KM survival curve analysis, univariate and multivariate Cox regression analyses, nomogram analysis, ROC curve analysis, gene function enrichment analysis, and immune cell infiltration analysis were conducted. In addition, data from the Human Protein Atlas (HPA) database were collected to validate SESN2 expression in glioma. (3) Results: In comparison with normal tissue, expression of SESN2 in glioma tissue was higher, and those with higher expressions had significantly lower overall survival rates. The results of univariate Cox regression analyses showed that SESN2 can be a disadvantageous factor in poor glioma prognosis. Both nomograms and ROC curves confirmed these findings. Meanwhile, according to gene function analysis, SESN2 may be involved in immune responses and the tumor microenvironment (TME). Based on the HPA database results, SESN2 is localized in the cytosol and shows high expression in glioma. (4) Conclusions: The expression of SESN2 in gliomas was positively relevant to a poorer prognosis, suggesting that SESN2 could be used as a prognostic gene.
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Qian T, Yu X, Xu A, Li H, Chen W, Zhong S. tRF-20-S998LO9D inhibits endometrial carcinoma by upregulating SESN2. Epigenomics 2022; 14:1563-1577. [PMID: 36803014 DOI: 10.2217/epi-2022-0349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
Aim: To explore the roles of transfer RNA-derived small RNAs (tsRNAs) in endometrial carcinoma (EC). Materials & methods: tsRNA profiles for EC from TCGA were analyzed. The functions and mechanisms of tsRNA were explored using in vitro experiments. Results: 173 dysregulated tsRNAs were identified. After validating in EC tissues and serumal exosome samples from EC patients, a downregulated tsRNA in both EC tissues and serumal exosomes (i.e., tRF-20-S998LO9D) was observed. Exosomal tRF-20-S998LO9D had an area under the curve of 0.768. tRF-20-S998LO9D overexpression inhibited proliferation, migration and invasion and promoted apoptosis of EC cells and tRF-20-S998LO9D knockdown further confirmed its effects. Further analyses showed that tRF-20-S998LO9D upregulated SESN2 in protein levels. Conclusion: tRF-20-S998LO9D inhibits EC cells by upregulating SESN2.
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Affiliation(s)
- Tianye Qian
- Department of Gynecologic Oncology, The Affiliated Cancer Hospital of Nanjing Medical University & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research, Nanjing, 210009, China
| | - Xinnian Yu
- Department of Internal Medicine, The Affiliated Cancer Hospital of Nanjing Medical University & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research, Nanjing, 210009, China
| | - Andi Xu
- Department of Pathology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Huixin Li
- Department of Gynecology, Women's Hospital of Nanjing Medical University, Nanjing Maternity & Child Health Care Hospital, Nanjing, 210004, China
| | - Wei Chen
- Department of Head & Neck Surgery, The Affiliated Cancer Hospital of Nanjing, Medical University & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research, Nanjing, 210009, China
| | - Shanliang Zhong
- Center of Clinical Laboratory Science, The Affiliated Cancer Hospital of Nanjing Medical University & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research, Nanjing, 210009, China
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12
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Abstract
Background Pyroptosis has been attracting much attention recently. We have briefly compared its differences and similarities with other programmed deaths and the process of its study. With further exploration of the caspase family, including caspase-1/3/4/5/8/11, new insights into the molecular pathways of action of pyroptosis have been gained. It is also closely related to the development of many cancers, which at the same time provides us with new ideas for the treatment of cancer. Scope of Review We describe what is known regarding the impact of pyroptosis on anticancer immunity and give insight into the potential of harnessing pyroptosis as a tool and applying it to novel or existing anticancer strategies. Major Conclusions Pyroptosis, a caspase-dependent cell death, causes pore formation, cell swelling, rupture of the plasma membrane, and release of all intracellular contents. The role of pyroptosis in cancer is an extremely complex issue. There is growing evidence that tumor pyroptosis has anti-tumor and pro-tumor roles. It should be discussed in different cancer periods according to the characteristics of cancer occurrence and development. In cancer treatment, pyroptosis provides us with some potential new targets. For the existing drugs, the study of pyroptosis also helps us make better use of existing drugs for anticancer treatment. Immunotherapy is a hot research direction in the field of cancer treatment.
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Affiliation(s)
- Chen Huang
- Department of Abdominal Oncology, Cancer Center and Laboratory of Molecular Targeted Therapy in Oncology, West China Hospital, Sichuan University, China
| | - Jian Li
- West China School of Medicine, Sichuan University, Chengdu, China
| | - Chenliang Zhang
- Laboratory of Molecular Targeted Therapy in Oncology, West China Hospital, Sichuan University, Chengdu, China.
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13
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Boo SJ, Piao MJ, Kang KA, Zhen AX, Fernando PDSM, Herath HMUL, Lee SJ, Song SE, Hyun JW. Comparative Study of Autophagy in Oxaliplatin-Sensitive and Resistant SNU-C5 Colon Cancer Cells. Biomol Ther (Seoul) 2022; 30:447-454. [PMID: 35611548 PMCID: PMC9424339 DOI: 10.4062/biomolther.2022.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 04/12/2022] [Accepted: 04/13/2022] [Indexed: 11/29/2022] Open
Abstract
Few studies have evaluated the role of autophagy in the development of oxaliplatin (OXT) resistance in colon cancer cells. In this study, we compared the role of autophagy between SNU-C5 colon cancer cells and OXT-resistant SNU-C5 (SNU-C5/OXTR) cells. At the same concentration of OXT, the cytotoxicity of OXT or apoptosis was significantly reduced in SNU-C5/OXTR cells compared with that in SNU-C5 cells. Compared with SNU-C5 cells, SNU-C5/OXTR cells exhibited low levels of autophagy. The expression level of important autophagy proteins, such as autophagy-related protein 5 (Atg5), beclin-1, Atg7, microtubule-associated proteins 1A/1B light chain 3B I (LC3-I), and LC3-II, was significantly lower in SNU-C5/OXTR cells than that in SNU-C5 cells. The expression level of the autophagy-essential protein p62 was also lower in SNU-C5/OXTR cells than in SNU-C5 cells. In SNU-C5/OXTR cells, the production of intracellular reactive oxygen species (ROS) was significantly higher than that in SNU-C5 cells, and treatment with the ROS scavenger N-acetylcysteine restored the reduced autophagy levels. Furthermore, the expression of antioxidant-related nuclear factor erythroid 2-related factor 2 transcription factor, heme oxygenase-1, and Cu/Zn superoxide dismutase were also significantly increased in SNU-C5/OXTR cells. These findings suggest that autophagy is significantly reduced in SNU-C5/OXTR cells compared with SNU-C5 cells, which may be related to the production of ROS in OXT-resistant cells.
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Affiliation(s)
- Sun-Jin Boo
- Department of Internal Medicine, Jeju National University Hospital, College of Medicine, Jeju National University, Jeju 63241, Republic of Korea
| | - Mei Jing Piao
- Department of Biochemistry, College of Medicine, Jeju National University, Jeju 63243, Republic of Korea.,Jeju Natural Medicine Research Center, Jeju National University, Jeju 63243, Republic of Korea
| | - Kyoung Ah Kang
- Department of Biochemistry, College of Medicine, Jeju National University, Jeju 63243, Republic of Korea.,Jeju Natural Medicine Research Center, Jeju National University, Jeju 63243, Republic of Korea
| | - Ao Xuan Zhen
- Department of Biochemistry, College of Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | | | | | - Seung Joo Lee
- Department of Biochemistry, College of Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Seung Eun Song
- Department of Anesthesiology, Jeju National University Hospital, College of Medicine, Jeju National University, Jeju 63241, Republic of Korea
| | - Jin Won Hyun
- Department of Biochemistry, College of Medicine, Jeju National University, Jeju 63243, Republic of Korea.,Jeju Natural Medicine Research Center, Jeju National University, Jeju 63243, Republic of Korea
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14
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Abstract
AbstractSestrin2 is a conserved antioxidant, metabolism regulator, and downstream of P53. Sestrin2 can suppress oxidative stress and inflammation, thereby preventing the development and progression of cancer. However, Sestrin2 attenuates severe oxidative stress by activating nuclear factor erythroid 2-related factor 2 (Nrf2), thereby enhancing cancer cells survival and chemoresistance. Sestrin2 inhibits endoplasmic reticulum stress and activates autophagy and apoptosis in cancer cells. Attenuation of endoplasmic reticulum stress and augmentation of autophagy hinders cancer development but can either expedite or impede cancer progression under specific conditions. Furthermore, Sestrin2 can vigorously inhibit oncogenic signaling pathways through downregulation of mammalian target of rapamycin complex 1 (mTORC1) and hypoxia-inducible factor 1-alpha (HIF-1α). Conversely, Sestrin2 decreases the cytotoxic activity of T cells and natural killer cells which helps tumor cells immune evasion. Sestrin2 can enhance tumor cells viability in stress conditions such as glucose or glutamine deficiency. Cancer cells can also upregulate Sestrin2 during chemotherapy or radiotherapy to attenuate severe oxidative stress and ER stress, augment autophagy and resist the treatment. Recent studies unveiled that Sestrin2 is involved in the development and progression of several types of human cancer. The effect of Sestrin2 may differ depending on the type of tumor, for instance, several studies revealed that Sestrin2 protects against colorectal cancer, whereas results are controversial regarding lung cancer. Furthermore, Sestrin2 expression correlates with metastasis and survival in several types of human cancer such as colorectal cancer, lung cancer, and hepatocellular carcinoma. Targeted therapy for Sestrin2 or regulation of its expression by new techniques such as non-coding RNAs delivery and vector systems may improve cancer chemotherapy and overcome chemoresistance, metastasis and immune evasion that should be investigated by future trials.
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15
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Chen Y, Huang T, Yu Z, Yu Q, Wang Y, Hu J, Shi J, Yang G. The functions and roles of sestrins in regulating human diseases. Cell Mol Biol Lett 2022; 27:2. [PMID: 34979914 PMCID: PMC8721191 DOI: 10.1186/s11658-021-00302-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 12/21/2021] [Indexed: 12/12/2022] Open
Abstract
Sestrins (Sesns), highly conserved stress-inducible metabolic proteins, are known to protect organisms against various noxious stimuli including DNA damage, oxidative stress, starvation, endoplasmic reticulum (ER) stress, and hypoxia. Sesns regulate metabolism mainly through activation of the key energy sensor AMP-dependent protein kinase (AMPK) and inhibition of mammalian target of rapamycin complex 1 (mTORC1). Sesns also play pivotal roles in autophagy activation and apoptosis inhibition in normal cells, while conversely promoting apoptosis in cancer cells. The functions of Sesns in diseases such as metabolic disorders, neurodegenerative diseases, cardiovascular diseases, and cancer have been broadly investigated in the past decades. However, there is a limited number of reviews that have summarized the functions of Sesns in the pathophysiological processes of human diseases, especially musculoskeletal system diseases. One aim of this review is to discuss the biological functions of Sesns in the pathophysiological process and phenotype of diseases. More significantly, we include some new evidence about the musculoskeletal system. Another purpose is to explore whether Sesns could be potential biomarkers or targets in the future diagnostic and therapeutic process.
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Affiliation(s)
- Yitong Chen
- Department of Orthodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006, Zhejiang, China
| | - Tingben Huang
- Department of Implantology, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006, Zhejiang, China
| | - Zhou Yu
- Department of Implantology, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006, Zhejiang, China
| | - Qiong Yu
- Department of Implantology, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006, Zhejiang, China
| | - Ying Wang
- Department of Oral Medicine, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006, Zhejiang, China
| | - Ji'an Hu
- Department of Oral Pathology, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006, Zhejiang, China.
| | - Jiejun Shi
- Department of Orthodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006, Zhejiang, China.
| | - Guoli Yang
- Department of Implantology, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006, Zhejiang, China.
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16
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Wen R, Chen C, Zhong X, Hu C. PAX6 upstream antisense RNA (PAUPAR) inhibits colorectal cancer progression through modulation of the microRNA (miR)-17-5p / zinc finger protein 750 (ZNF750) axis. Bioengineered 2021; 12:3886-3899. [PMID: 34288812 PMCID: PMC8806802 DOI: 10.1080/21655979.2021.1940071] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Researchers have demonstrated that long non-coding RNAs (lncRNAs) are vital in colorectal cancer (CRC) progression. Here, we aimed to explore the function of lncRNA PAX6 upstream antisense RNA (PAUPAR) in the development of CRC. In the present study, PAUPAR and microRNA (miR)-17-5p expression levels in CRC tissues and cells were examined using quantitative real-time polymerase chain reaction (qRT-PCR). Western blot analysis was adopted to examine ZNF750 expression at the protein level in CRC cells. CRC cell proliferation was examined by colony formation experiment and 5-Bromo-2-deoxyUridine (BrdU) experiment. CRC cell migration and invasion were assessed by Transwell experiments. Apoptosis was measured using the TUNEL experiment. The targeting relationship between PAUPAR and miR-17-5p was confirmed using dual-luciferase reporter gene and RNA immunoprecipitation (RIP) experiments. We demonstrated that PAUPAR was markedly down-modulated in CRC, and its low expression was significantly related to increased T stage and local lymph node metastasis. Knockdown of PAUPAR enhanced CRC cell proliferation, migration and invasion, and restrained apoptosis relative to controls, whereas PAUPAR overexpression caused the opposite effects. Moreover, rescue experiments showed that miR-17-5p inhibitor could reverse the role of PAUPAR knockdown on the malignant phenotypes of CRC cells. Additionally, PAUPAR could positively regulate the expression of ZNF750 via repressing miR-17-5p. Taken together, these findings suggest that PAUPAR/miR-17-5p/ZNF750 axis is a novel mechanism implicated in CRC progression.
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Affiliation(s)
- Ruhui Wen
- Department of Gastrointestinal Surgery, Huizhou Municipal Central Hospital, Huizhou, Guangdong, China
- CONTACT Ruhui Wen Department of Gastrointestinal Surgery, Huizhou Municipal Central Hospital, NO. 41 Erling North Road, Huicheng District, Huizhou, Guangdong516000, China
| | - Chao Chen
- Department of Gastrointestinal Surgery, Huizhou Municipal Central Hospital, Huizhou, Guangdong, China
| | - Xiaohua Zhong
- Department of Gastrointestinal Surgery, Huizhou Municipal Central Hospital, Huizhou, Guangdong, China
| | - Chen Hu
- Department of Gastrointestinal Surgery, Huizhou Municipal Central Hospital, Huizhou, Guangdong, China
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17
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Zhao X, Cui D, Yan F, Yang L, Huang B. Circ_0007919 exerts an anti-tumor role in colorectal cancer through targeting miR-942-5p/TET1 axis. Pathol Res Pract 2021; 229:153704. [PMID: 34906917 DOI: 10.1016/j.prp.2021.153704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 10/19/2021] [Accepted: 11/20/2021] [Indexed: 02/07/2023]
Abstract
Circular RNAs (circRNAs) are key regulators in the development of many cancers. The present study was aimed to investigate the mechanism by which circ_0007919 affected colorectal cancer (CRC) progression.The differentially expressed circRNA was screened out by analyzing the expression profile of circRNAs of CRC tissues. Quantitative real-time polymerase chain reaction (qRT-PCR) was performed for detecting the expressions of circ_0007919, miR-942-5p, and ten-eleven translocation 1 (TET1) mRNA in CRC tissues and cell lines. Cell growth and migration were assessed by cell counting kit-8 (CCK-8) 5-bromo-2'-deoxyuridine (BrdU) and scratch assays. Bioinformatics analysis and dual-luciferase reporter assay were conducted to predict and validate the targeted relationships between circ_0007919 and miR-942-5p, as well as between miR-942-5p and TET1 mRNA. Besides, Western blot was conducted for detecting TET1 protein expression in CRC cells. It was revealed that, in CRC tissues and cell lines, circ_0007919 and TET1 expressions were reduced whereas miR-942-5p expression was enhanced. It was also revealed that circ_0007919 overexpression markedly suppressed CRC cell growth and migration. In addition, circ_0007919 could competitively bind with miR-942-5p to increase the expression of miR-942-5p's target gene TET1. Collectively, circ_0007919 inhibits CRC cell growth and migration via regulating the miR-942-5p/TET1 axis. This study helps to better understand the molecular mechanism of CRC progression.
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Affiliation(s)
- Xun Zhao
- Department of Gastroenterology, Guizhou Provincial People's Hospital, Medical College of Guizhou University, Guiyang 550002, Guizhou, China
| | - Dejun Cui
- Department of Gastroenterology, Guizhou Provincial People's Hospital, Medical College of Guizhou University, Guiyang 550002, Guizhou, China
| | - Fang Yan
- Department of Gastroenterology, Guizhou Provincial People's Hospital, Medical College of Guizhou University, Guiyang 550002, Guizhou, China
| | - Liuchan Yang
- Department of Gastroenterology, Guizhou Provincial People's Hospital, Medical College of Guizhou University, Guiyang 550002, Guizhou, China
| | - Bo Huang
- Department of Gastroenterology, Guizhou Provincial People's Hospital, Medical College of Guizhou University, Guiyang 550002, Guizhou, China.
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18
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Tang Z, Wei X, Li T, Wang W, Wu H, Dong H, Liu Y, Wei F, Shi L, Li X, Guo Z, Xiao X. Sestrin2-Mediated Autophagy Contributes to Drug Resistance via Endoplasmic Reticulum Stress in Human Osteosarcoma. Front Cell Dev Biol 2021; 9:722960. [PMID: 34646824 PMCID: PMC8502982 DOI: 10.3389/fcell.2021.722960] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 08/30/2021] [Indexed: 01/29/2023] Open
Abstract
One contributor to the high mortality of osteosarcoma is its reduced sensitivity to chemotherapy, but the mechanism involved is unclear. Improving the sensitivity of osteosarcoma to chemotherapy is urgently needed to improve patient survival. We found that chemotherapy triggered apoptosis of human osteosarcoma cells in vitro and in vivo; this was accompanied by increased Sestrin2 expression. Importantly, autophagy was also enhanced with increased Sestrin2 expression. Based on this observation, we explored the potential role of Sestrin2 in autophagy of osteosarcoma. We found that Sestrin2 inhibited osteosarcoma cell apoptosis by promoting autophagy via inhibition of endoplasmic reticulum stress, and this process is closely related to the PERK-eIF2α-CHOP pathway. In addition, our study showed that low Sestrin2 expression can effectively reduce autophagy of human osteosarcoma cells after chemotherapy, increase p-mTOR expression, decrease Bcl-2 expression, promote osteosarcoma cell apoptosis, and slow down tumour progression in NU/NU mice. Sestrin2 activates autophagy by inhibiting mTOR via the PERK-eIF2α-CHOP pathway and inhibits apoptosis via Bcl-2. Therefore, our results explain one underlying mechanism of increasing the sensitivity of osteosarcoma to chemotherapy and suggest that Sestrin2 is a promising gene target.
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Affiliation(s)
- Zhen Tang
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Xinghui Wei
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Tian Li
- School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Wei Wang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Hao Wu
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Hui Dong
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yichao Liu
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Feilong Wei
- Department of Orthopaedics, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Lei Shi
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Xiaokang Li
- Department of Orthopaedics, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Zheng Guo
- Department of Orthopaedics, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Xin Xiao
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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19
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Potential Roles of Sestrin2 in Alzheimer's Disease: Antioxidation, Autophagy Promotion, and Beyond. Biomedicines 2021; 9:biomedicines9101308. [PMID: 34680426 PMCID: PMC8533411 DOI: 10.3390/biomedicines9101308] [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: 07/29/2021] [Revised: 09/14/2021] [Accepted: 09/16/2021] [Indexed: 11/17/2022] Open
Abstract
Alzheimer’s disease (AD) is the most common age-related neurodegenerative disease. It presents with progressive memory loss, worsens cognitive functions to the point of disability, and causes heavy socioeconomic burdens to patients, their families, and society as a whole. The underlying pathogenic mechanisms of AD are complex and may involve excitotoxicity, excessive generation of reactive oxygen species (ROS), aberrant cell cycle reentry, impaired mitochondrial function, and DNA damage. Up to now, there is no effective treatment available for AD, and it is therefore urgent to develop an effective therapeutic regimen for this devastating disease. Sestrin2, belonging to the sestrin family, can counteract oxidative stress, reduce activity of the mammalian/mechanistic target of rapamycin (mTOR), and improve cell survival. It may therefore play a crucial role in neurodegenerative diseases like AD. However, only limited studies of sestrin2 and AD have been conducted up to now. In this article, we discuss current experimental evidence to demonstrate the potential roles of sestrin2 in treating neurodegenerative diseases, focusing specifically on AD. Strategies for augmenting sestrin2 expression may strengthen neurons, adapting them to stressful conditions through counteracting oxidative stress, and may also adjust the autophagy process, these two effects together conferring neuronal resistance in cases of AD.
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20
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Al-Bari MAA, Ito Y, Ahmed S, Radwan N, Ahmed HS, Eid N. Targeting Autophagy with Natural Products as a Potential Therapeutic Approach for Cancer. Int J Mol Sci 2021; 22:9807. [PMID: 34575981 PMCID: PMC8467030 DOI: 10.3390/ijms22189807] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/06/2021] [Accepted: 09/07/2021] [Indexed: 02/07/2023] Open
Abstract
Macro-autophagy (autophagy) is a highly conserved eukaryotic intracellular process of self-digestion caused by lysosomes on demand, which is upregulated as a survival strategy upon exposure to various stressors, such as metabolic insults, cytotoxic drugs, and alcohol abuse. Paradoxically, autophagy dysfunction also contributes to cancer and aging. It is well known that regulating autophagy by targeting specific regulatory molecules in its machinery can modulate multiple disease processes. Therefore, autophagy represents a significant pharmacological target for drug development and therapeutic interventions in various diseases, including cancers. According to the framework of autophagy, the suppression or induction of autophagy can exert therapeutic properties through the promotion of cell death or cell survival, which are the two main events targeted by cancer therapies. Remarkably, natural products have attracted attention in the anticancer drug discovery field, because they are biologically friendly and have potential therapeutic effects. In this review, we summarize the up-to-date knowledge regarding natural products that can modulate autophagy in various cancers. These findings will provide a new position to exploit more natural compounds as potential novel anticancer drugs and will lead to a better understanding of molecular pathways by targeting the various autophagy stages of upcoming cancer therapeutics.
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Affiliation(s)
| | - Yuko Ito
- Department of General and Gastroenterological Surgery, Osaka Medical and Pharmaceutical University, 2–7 Daigaku-machi, Takatsuki 569-8686, Osaka, Japan;
| | - Samrein Ahmed
- Department of Biosciences and Chemistry, College of Health and Wellbeing and Life Sciences, Sheffield Hallam University, City Campus, Howard Street, Sheffield S1 1WB, UK;
| | - Nada Radwan
- Department of Anatomy, College of Medicine & Health Sciences, United Arab Emirates University, Al Ain 17666, United Arab Emirates;
| | - Hend S. Ahmed
- Department of Hematology and Blood Transfusion, Faculty of Medical Laboratory Science, Omdurman Ahlia University, Khartoum 786, Sudan;
| | - Nabil Eid
- Department of Anatomy, College of Medicine & Health Sciences, United Arab Emirates University, Al Ain 17666, United Arab Emirates;
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21
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Mao G, Zhou B, Xu W, Jiao N, Wu Z, Li J, Liu Y. Hsa_circ_0040809 regulates colorectal cancer development by upregulating methyltransferase DNMT1 via targeting miR-515-5p. J Gene Med 2021; 23:e3388. [PMID: 34438465 DOI: 10.1002/jgm.3388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/29/2021] [Accepted: 08/22/2021] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) are key regulators in the progression of various cancers. Abnormal DNA methylation patterns feature prominently in the regulation of the expression of tumor-related genes. This study is aimed at investigating the molecular mechanism of circ_0040809 affecting colorectal cancer (CRC) progression by regulating DNA methyltransferase 1 (DNMT1). METHODS circ_0040809 was selected from the circRNA microarray datasets (GSE142837 and GSE138589). Quantitative real-time polymerase chain reaction (qRT-PCR) was conducted to examine the expression of circ_0040809, miR-515-5p, and DNMT1 mRNA in paired cancerous and paracancerous tissues of 40 CRC patients, as well as in cell lines. Western blotting was conducted for detecting DNMT1 protein expression in CRC cells. Cell proliferation, migration, and apoptosis were assessed through CCK-8, Transwell, and flow cytometry assays. Bioinformatics and dual-luciferase gene assay were conducted to predict and verify, respectively, the targeted relationships between circ_0040809 and miR-515-5p, as well as between miR-515-5p and DNMT1 mRNA. RESULTS In CRC tissues and cells, circ_0040809 and DNMT1 expression are markedly increased, whereas miR-515-5p expression is decreased. Also, high circ_0040809 expression is significantly linked to shorter overall survival. Cell function compensation experiments reveal that circ_0040809 silencing inhibits CRC cell proliferation and migration and promotes apoptosis, while circ_0040809 overexpression has the opposite effects. Mechanistically, circ_0040809 competitively binds to miR-515-5p to elevate DNMT1 expression. Rescue assay reveals that overexpressed miR-515-5p partly counteracts the tumor-facilitating impact of circ_0040809. CONCLUSIONS circ_0040809 facilitates CRC cell proliferation and migration, and inhibits apoptosis, through modulating miR-515-5p/DNMT1 axis. Our study implies that targeting circ_0040809 may be a therapy strategy for CRC treatment.
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Affiliation(s)
- Guoliang Mao
- Department of Pathology, First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Wuhu, Anhui, China
| | - Bing Zhou
- Department of Pathology, First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Wuhu, Anhui, China
| | - Wuqin Xu
- Department of Pathology, First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Wuhu, Anhui, China
| | - Nanlin Jiao
- Department of Pathology, First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Wuhu, Anhui, China
| | - Zhihao Wu
- Research Laboratory of Tumor Microenvironment, Wannan Medical College, Wuhu, Anhui, China
| | - Jiajia Li
- Department of Pathology, First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Wuhu, Anhui, China
| | - Yinhua Liu
- Department of Pathology, First Affiliated Hospital of Wannan Medical College, Yijishan Hospital, Wuhu, Anhui, China
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Yu J, Yang Y, Li S, Meng P. Salinomycin triggers prostate cancer cell apoptosis by inducing oxidative and endoplasmic reticulum stress via suppressing Nrf2 signaling. Exp Ther Med 2021; 22:946. [PMID: 34306210 PMCID: PMC8281384 DOI: 10.3892/etm.2021.10378] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 03/11/2021] [Indexed: 12/12/2022] Open
Abstract
Salinomycin is a polyether antiprotozoal antibiotic that is widely used as an animal food additive. Some antifungal, antiparasitic, antiviral and anti-inflammatory activities have been reported for salinomycin. Recently, the anti-cancer effect of salinomycin has been demonstrated in breast cancer; however, the underlying mechanism remains unknown. The present study aimed to investigate the functional roles of salinomycin in the progression of prostate cancer cells using the DU145 and PC-3 cell lines. Western blotting and reverse transcription-quantitative polymerase chain reaction were performed to detect the expression of oxidative stress and endoplasmic reticulum stress-related molecules, and flow cytometry was performed to detect the apoptosis rate of DU145 and PC-3 cells after salinomycin treatment. The results demonstrated that salinomycin inhibited the viability and induced the apoptosis of PC-3 and DU145 cells in a dose-dependent manner. Furthermore, salinomycin increased the production of reactive oxygen species (ROS) and 8-hydroxy-2'-deoxyguanosine (8-OH-dG) and the lipid peroxidation. In addition, salinomycin induced the activation of unfolded protein response and endoplasmic reticulum stress in DU145 and PC-3 cells, as indicated by the elevated expression of binding immunoglobulin protein, activating transcription factor 4, phosphorylated eukaryotic initiation factor 2α, phosphorylated protein kinase RNA-like endoplasmic reticulum kinase and C/EBP homologous protein. In addition, salinomycin significantly downregulated the expression of nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase-1, NAD(P)H quinone dehydrogenase 1 and glutamate-cysteine ligase catalytic subunit and decreased the activity of the antioxidant enzymes superoxide dismutase, catalase and glutathione peroxidase in PC-3 and DU145 cells. Furthermore, the Nrf2 activator, tert-butylhydroquinone, significantly reversed the therapeutic effects of salinomycin by stimulating the Nrf2 pathway and increasing the activity of antioxidant enzymes. Taken together, these findings demonstrated that salinomycin may trigger apoptosis by inducing oxidative and ER stress in prostate cancer cells via suppressing Nrf2 signaling.
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Affiliation(s)
- Jianyong Yu
- Department of Urology, Yantai Hospital of Traditional Chinese Medicine, Yantai, Shandong 264001, P.R. China
| | - Yang Yang
- Department of Urology, Haiyang People's Hospital, Yantai, Shandong 264001, P.R. China
| | - Shan Li
- The Fourth Department of Oncology, Yantai Hospital of Traditional Chinese Medicine, Yantai, Shandong 264001, P.R. China
| | - Peng Meng
- The Fourth Department of Oncology, Yantai Hospital of Traditional Chinese Medicine, Yantai, Shandong 264001, P.R. China
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23
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Shao YM, Wu Y. Inhibitory effects of piperine on proliferation, migration, and invasion of human colon cancer SW480 cells. Shijie Huaren Xiaohua Zazhi 2021; 29:639-646. [DOI: 10.11569/wcjd.v29.i12.639] [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: 02/06/2023] Open
Abstract
BACKGROUND Many recent reports have shown that piperine has anticancer activity, but the specific roles and biological mechanisms of piperine in colon cancer are not well studied.
AIM To investigate the effects and potential mechanisms of piperine on the proliferation, migration, and invasion of human colon cancer SW480 cells.
METHODS SW480 cells were treated with 0 (blank control), 5, 10, and 20 μg/mL piperine for 24 h, respectively. Cell viability was detected by cell counting kit-8 (CCK-8) assay. Proliferation was detected by 5-ethynyl-2'-deoxyuridine (EDU) staining. Cell migration and invasion were detected by Transwell assay. The protein expression levels of microtubule-associated light chain 3 (LC3), p53, B cell lymphoma/lewkmia-2 (Bcl-2), Bcl-2 associated X protein (Bax), and cleaved cysteine aspartate proteinase-3 (Cleaved caspase 3) were detected by Western blotting.
RESULTS Piperine inhibited cell viability, proliferation, migration, and invasion in a concentration-dependent manner. Western blot analysis showed that piperine increased the expression of p53, Bax, and Cleaved caspase 3 but decreased the expression of Bcl-2 in SW480 cells compared with control cells.
CONCLUSION Piperine can inhibit the proliferation, migration, and invasion of SW480 cells, and the mechanism may be related to the up-regulation of p53 signaling pathway and the induction of autophagic cell death.
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Affiliation(s)
- Yi-Min Shao
- Department of Pharmacy, Tonglu Traditional Chinese Medicine Hospital, Hangzhou 311500, Zhejiang Province, China
| | - Yong Wu
- Department of Pharmacy, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou 31006, Zhejiang Province, China
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24
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DE Almeida DCN, DE Souza MPC, Amorim CKN, DA Silva MauÉs JH, DO E Santo Sagica F, Moreira-Nunes CA, DE Oliveira EHC. Copy Number Alterations in Papillary Thyroid Carcinomas: Does Loss of SESN2 Have a Role in Age-related Different Prognoses? Cancer Genomics Proteomics 2021; 17:643-648. [PMID: 32859642 DOI: 10.21873/cgp.20220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 07/01/2020] [Accepted: 07/07/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND/AIM Thyroid cancer is the only tumor in which age is an important prognostic factor. In papillary thyroid carcinomas (PTC), 45 years of age seems to be a key point that divides adult patients into two groups, with different clinical features. The aim of the study was to perform a microarray-based analysis in two groups of patients (<45 and ≥45 years old), in order to verify the occurrence of specific copy number alterations (CNAs) that could be associated to different patient behaviors associated with age. PATIENTS AND METHODS In order to search and compare genomic alterations that may be related to age, we evaluated the occurrence of CNAs in the genome of 24 PTC samples, divided in two groups (<45 and ≥45 years old). RESULTS We identified only one region showing a statistically significant difference between the groups (p=0.00357): a deletion of approximately 537 kps in 1p35.3., which was more frequent in patients aged 45 years or older. This is the region where, among others, the gene SESN2 is located, which is activated under oxidative stress and plays an antioxidant role, in addition to protecting the genetic material from damage generated by reactive oxygen species (ROS). CONCLUSION This is the first time that a CNA involving the deletion of the SESN2 gene is associated with papillary thyroid carcinomas, particularly in patients aged 45 years and older, indicating that this deletion would lead to a more malignant and prominent tumoral behavior associated to a worst prognosis.
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Affiliation(s)
| | | | | | - Jersey Heitor DA Silva MauÉs
- Laboratory of Human Cytogenetics, Institute of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
| | | | - Caroline Aquino Moreira-Nunes
- Pharmacogenetics Laboratory, Drug Research and Development Center (NPDM), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Edivaldo Herculano C DE Oliveira
- Laboratory of Tissue Culture and Cytogenetics, SAMAM, Instituto Evandro Chagas, Ananindeua, PA, Brazil.,Faculty of Natural Sciences, ICEN, UFPA, Belém, PA, Brazil
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25
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Tu M, Wang W, Zhang G, Hammock BD. ω-3 Polyunsaturated Fatty Acids on Colonic Inflammation and Colon Cancer: Roles of Lipid-Metabolizing Enzymes Involved. Nutrients 2020; 12:nu12113301. [PMID: 33126566 PMCID: PMC7693568 DOI: 10.3390/nu12113301] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/22/2020] [Accepted: 10/24/2020] [Indexed: 02/06/2023] Open
Abstract
Substantial human and animal studies support the beneficial effects of ω-3 polyunsaturated fatty acids (PUFAs) on colonic inflammation and colorectal cancer (CRC). However, there are inconsistent results, which have shown that ω-3 PUFAs have no effect or even detrimental effects, making it difficult to effectively implement ω-3 PUFAs for disease prevention. A better understanding of the molecular mechanisms for the anti-inflammatory and anticancer effects of ω-3 PUFAs will help to clarify their potential health-promoting effects, provide a scientific base for cautions for their use, and establish dietary recommendations. In this review, we summarize recent studies of ω-3 PUFAs on colonic inflammation and CRC and discuss the potential roles of ω-3 PUFA-metabolizing enzymes, notably the cytochrome P450 monooxygenases, in mediating the actions of ω-3 PUFAs.
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Affiliation(s)
- Maolin Tu
- Department of Food Science, University of Massachusetts, Amherst, MA 01002, USA; (M.T.); (G.Z.)
- Department of Food Science and Technology, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Weicang Wang
- Department of Entomology and Comprehensive Cancer Center, University of California, Davis, CA 95616, USA;
| | - Guodong Zhang
- Department of Food Science, University of Massachusetts, Amherst, MA 01002, USA; (M.T.); (G.Z.)
- Molecular and Cellular Biology Graduate Program, University of Massachusetts, Amherst, MA 01002, USA
| | - Bruce D. Hammock
- Department of Entomology and Comprehensive Cancer Center, University of California, Davis, CA 95616, USA;
- Correspondence: ; Tel.: +1-530-752-7519
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26
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Ding W, Zhang H, Mei G. Synergistic antitumor activity of DHA and JQ1 in colorectal carcinoma. Eur J Pharmacol 2020; 885:173500. [PMID: 32861663 DOI: 10.1016/j.ejphar.2020.173500] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 08/19/2020] [Accepted: 08/21/2020] [Indexed: 11/19/2022]
Abstract
Colon cancer is still a major disease plaguing humans. In this study, we evaluated the synergistic antitumor effects of the combination of BRD4 inhibitor JQ1 and docosahexaenoic acid (DHA) in colon cancer. We demonstrated that simultaneous exposure to JQ1 and DHA resulted in strong synergistic antiproliferative and proapoptotic effects related to inhibition of expression of c-Myc and activation of NF-κB in colon cancer cell lines. At the same time, the synergetic anticancer effect had been confirmed in vivo. For in vivo experiments, JQ1 and DHA resulted in more significant tumor growth inhibition (53.7%) in a human colon cancer HCT116 xenograft model, comparing with the moderate inhibition in JQ1-treated (31.9%) or DHA-treated groups (20.3%). Because DHA is the predominant component of fish oil, our data suggest that this nontoxic dietary supplement could be administered with BRD4 inhibitor during therapy for CRC, which lay an important foundation for the development of therapeutic regimens for CRC.
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Affiliation(s)
- Wanjing Ding
- Institute of Marine Biology& Pharmacology, Ocean College, Zhejiang University, Zhoushan, Zhejiang, 316021, China.
| | - Haojian Zhang
- Institute of Marine Biology& Pharmacology, Ocean College, Zhejiang University, Zhoushan, Zhejiang, 316021, China
| | - Guangming Mei
- Marine Fishery Research Institute of Zhejiang Province, Zhoushan, Zhejiang, 316021, China
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27
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Bojková B, Winklewski PJ, Wszedybyl-Winklewska M. Dietary Fat and Cancer-Which Is Good, Which Is Bad, and the Body of Evidence. Int J Mol Sci 2020; 21:ijms21114114. [PMID: 32526973 PMCID: PMC7312362 DOI: 10.3390/ijms21114114] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/27/2020] [Accepted: 06/02/2020] [Indexed: 12/13/2022] Open
Abstract
A high-fat diet (HFD) induces changes in gut microbiota leading to activation of pro-inflammatory pathways, and obesity, as a consequence of overnutrition, exacerbates inflammation, a known risk factor not only for cancer. However, experimental data showed that the composition of dietary fat has a greater impact on the pathogenesis of cancer than the total fat content in isocaloric diets. Similarly, human studies did not prove that a decrease in total fat intake is an effective strategy to combat cancer. Saturated fat has long been considered as harmful, but the current consensus is that moderate intake of saturated fatty acids (SFAs), including palmitic acid (PA), does not pose a health risk within a balanced diet. In regard to monounsaturated fat, plant sources are recommended. The consumption of plant monounsaturated fatty acids (MUFAs), particularly from olive oil, has been associated with lower cancer risk. Similarly, the replacement of animal MUFAs with plant MUFAs decreased cancer mortality. The impact of polyunsaturated fatty acids (PUFAs) on cancer risk depends on the ratio between ω-6 and ω-3 PUFAs. In vivo data showed stimulatory effects of ω-6 PUFAs on tumour growth while ω-3 PUFAs were protective, but the results of human studies were not as promising as indicated in preclinical reports. As for trans FAs (TFAs), experimental data mostly showed opposite effects of industrially produced and natural TFAs, with the latter being protective against cancer progression, but human data are mixed, and no clear conclusion can be made. Further studies are warranted to establish the role of FAs in the control of cell growth in order to find an effective strategy for cancer prevention/treatment.
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Affiliation(s)
- Bianka Bojková
- Department of Animal Physiology, Institute of Biology and Ecology, Faculty of Science, P.J. Šafárik University in Košice, 041 54 Košice, Slovakia;
| | - Pawel J. Winklewski
- Department of Human Physiology, Medical University of Gdansk, 80-210 Gdansk, Poland;
- Department of Anatomy and Physiology, Pomeranian University of Slupsk, 76-200 Slupsk, Poland
- Correspondence: ; Tel./Fax: +48-58-3491515
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28
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Transcriptomic Response of Breast Cancer Cells MDA-MB-231 to Docosahexaenoic Acid: Downregulation of Lipid and Cholesterol Metabolism Genes and Upregulation of Genes of the Pro-Apoptotic ER-Stress Pathway. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17103746. [PMID: 32466294 PMCID: PMC7277693 DOI: 10.3390/ijerph17103746] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 05/20/2020] [Accepted: 05/22/2020] [Indexed: 12/18/2022]
Abstract
Despite considerable efforts in prevention and therapy, breast cancer remains a major public health concern worldwide. Numerous studies using breast cancer cell lines have shown the antiproliferative and pro-apoptotic effects of docosahexaenoic acid (DHA). Some studies have also demonstrated the inhibitory effect of DHA on the migration and invasion of breast cancer cells, making DHA a potential anti-metastatic agent. Thus, DHA has shown its potential as a chemotherapeutic adjuvant. However, the molecular mechanisms triggering DHA effects remain unclear, and the aim of this study was to provide a transcriptomic basis for further cellular and molecular investigations. Therefore, MDA-MB-231 cells were treated with 100 µM DHA for 12 h or 24 h before RNA-seq analysis. The results show the great impact of DHA-treatment on the transcriptome, especially after 24 h of treatment. The impact of DHA is particularly visible in genes involved in the cholesterol biosynthesis pathway that is strongly downregulated, and the endoplasmic reticulum (ER)-stress response that is, conversely, upregulated. This ER-stress and unfolded protein response could explain the pro-apoptotic effect of DHA. The expression of genes related to migration and invasion (especially SERPINE1, PLAT, and MMP11) is also impacted by DHA. In conclusion, this transcriptomic analysis supports the antiproliferative, pro-apoptotic and anti-invasive effects of DHA, and provides new avenues for understanding its molecular mechanisms.
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29
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Yang Z, Pu M, Dong X, Ji F, Priya Veeraraghavan V, Yang H. Piperine loaded zinc oxide nanocomposite inhibits the PI3K/AKT/mTOR signaling pathway via attenuating the development of gastric carcinoma: In vitroandin vivostudies. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.03.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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30
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Ma Q, Liao H, Xu L, Li Q, Zou J, Sun R, Xiao D, Liu C, Pu W, Cheng J, Zhou X, Huang G, Yao L, Zhong X, Guo X. Autophagy-dependent cell cycle arrest in esophageal cancer cells exposed to dihydroartemisinin. Chin Med 2020; 15:37. [PMID: 32351616 PMCID: PMC7183693 DOI: 10.1186/s13020-020-00318-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 04/14/2020] [Indexed: 12/19/2022] Open
Abstract
Background Dihydroartemisinin (DHA), a derivate of artemisinin, is an effective antimalarial agent. DHA has been shown to exert anticancer activities to numerous cancer cells in the past few years, while the exact molecular mechanisms remain to be elucidated, especially in esophageal cancer. Methods Crystal violet assay was conducted to determine the cell viability of human esophageal cancer cell line Eca109 treated with DHA. Tumor-bearing nude mice were employed to evaluate the anticancer effect of DHA in vivo. Soft agar and crystal violet assays were used to measure the tumorigenicity of Eca109 cells. Flow cytometry was performed to evaluate ROS or cell cycle distribution. GFP-LC3 plasmids were delivered into Eca109 cells to visualize autophagy induced by DHA under a fluorescence microscope. The mRNA and protein levels of each gene were tested by qRT-PCR and western blot, respectively. Results Our results proved that DHA significantly reduced the viability of Eca109 cells in a dose- and time-dependent manner. Further investigation showed that DHA evidently induced cell cycle arrest at the G2/M phase in Eca109 cells. Mechanistically, DHA induced intracellular ROS generation and autophagy in Eca109 cells, while blocking ROS by an antioxidant NAC obviously inhibited autophagy. Furthermore, we found that telomere shelterin component TRF2 was down-regulated in Eca109 cells exposed to DHA through autophagy-dependent degradation, which could be rescued after autophagy was blocked by ROS inhibition. Moreover, the DNA damage response (DDR) was induced obviously in DHA treated cells. To further explore whether ROS or autophagy played a vital role in DHA induced cell cycle arrest, the cell cycle distribution of Eca109 cells was evaluated after ROS or autophagy blocking, and the results showed that autophagy, but not ROS, was essential for cell cycle arrest in DHA treated cells. Conclusion Taken together, DHA showed anticancer effect on esophageal cancer cells through autophagy-dependent cell cycle arrest at the G2/M phase, which unveiled a novel mechanism of DHA as a chemotherapeutic agent, and the degradation of TRF2 followed by DDR might be responsible for this cell phenotype.
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Affiliation(s)
- Qiang Ma
- 1Department of Clinical Laboratory, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,2Translational Medicine Research Center, North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,3Department of Laboratory Medicine, North Sichuan Medical College, Nanchong, 637000 People's Republic of China
| | - Hebin Liao
- 2Translational Medicine Research Center, North Sichuan Medical College, Nanchong, 637000 People's Republic of China
| | - Lei Xu
- 2Translational Medicine Research Center, North Sichuan Medical College, Nanchong, 637000 People's Republic of China
| | - Qingrong Li
- 1Department of Clinical Laboratory, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,2Translational Medicine Research Center, North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,3Department of Laboratory Medicine, North Sichuan Medical College, Nanchong, 637000 People's Republic of China
| | - Jiang Zou
- 1Department of Clinical Laboratory, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,2Translational Medicine Research Center, North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,3Department of Laboratory Medicine, North Sichuan Medical College, Nanchong, 637000 People's Republic of China
| | - Ru Sun
- 3Department of Laboratory Medicine, North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,4Department of Blood Transfusion, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000 People's Republic of China
| | - Dan Xiao
- 1Department of Clinical Laboratory, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,2Translational Medicine Research Center, North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,3Department of Laboratory Medicine, North Sichuan Medical College, Nanchong, 637000 People's Republic of China
| | - Chang Liu
- 1Department of Clinical Laboratory, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,2Translational Medicine Research Center, North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,3Department of Laboratory Medicine, North Sichuan Medical College, Nanchong, 637000 People's Republic of China
| | - Wenjie Pu
- 1Department of Clinical Laboratory, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,2Translational Medicine Research Center, North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,3Department of Laboratory Medicine, North Sichuan Medical College, Nanchong, 637000 People's Republic of China
| | - Jibing Cheng
- 1Department of Clinical Laboratory, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,2Translational Medicine Research Center, North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,3Department of Laboratory Medicine, North Sichuan Medical College, Nanchong, 637000 People's Republic of China
| | - Xi Zhou
- 1Department of Clinical Laboratory, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,2Translational Medicine Research Center, North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,3Department of Laboratory Medicine, North Sichuan Medical College, Nanchong, 637000 People's Republic of China
| | - Guangcheng Huang
- 1Department of Clinical Laboratory, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,2Translational Medicine Research Center, North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,3Department of Laboratory Medicine, North Sichuan Medical College, Nanchong, 637000 People's Republic of China
| | - Lihua Yao
- 1Department of Clinical Laboratory, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,2Translational Medicine Research Center, North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,3Department of Laboratory Medicine, North Sichuan Medical College, Nanchong, 637000 People's Republic of China
| | - Xiaowu Zhong
- 1Department of Clinical Laboratory, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,2Translational Medicine Research Center, North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,3Department of Laboratory Medicine, North Sichuan Medical College, Nanchong, 637000 People's Republic of China
| | - Xiaolan Guo
- 1Department of Clinical Laboratory, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,2Translational Medicine Research Center, North Sichuan Medical College, Nanchong, 637000 People's Republic of China.,3Department of Laboratory Medicine, North Sichuan Medical College, Nanchong, 637000 People's Republic of China
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31
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Pei FL, Cao MZ, Li YF. Circ_0000218 plays a carcinogenic role in colorectal cancer progression by regulating miR-139-3p/RAB1A axis. J Biochem 2020; 167:55-65. [PMID: 31598673 DOI: 10.1093/jb/mvz078] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 09/16/2019] [Indexed: 12/16/2022] Open
Abstract
Accumulating researches have confirmed that circRNA abnormal expression plays a prominent role in the progression of colorectal cancer (CRC). The role of circ_0000218 in CRC and its potential mechanism are not clear. In this study, real-time polymerase chain reaction (RT-PCR) was employed to measure the circ_0000218, miR-139-3p and RAB1A mRNA expression in CRC tissues and cells. Immunohistochemistry and western blot were conducted to determine the RAB1A expression in CRC tissues and cells, respectively. Colony formation assay and BrdU method were employed to monitor the effect of circ_0000218 on cell proliferation. Transwell assay was adopted to detect cell migration and invasion. Dual luciferase reporter assay and RNA immunoprecipitation assay were adopted to confirm the targeting relationship between circ_0000218 and miR-139-3p, miR-139-3p and RAB1A. We demonstrated that circ_0000218 was notably upregulated in CRC tissues and cell lines, and its high expression level was markedly linked to the increase of T staging and local lymph node metastasis. Circ_0000218 overexpression enhanced the proliferation and metastasis of CRC cells while knocking down circ_0000218 caused the opposite effects. We also observed that miR-139-3p was negatively regulated by circ_0000218, while RAB1A was positively regulated by it. Collectively, this study suggested that circ_0000218 upregulated RAB1A and promoted CRC proliferation and metastasis via sponging miR-139-3p.
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Affiliation(s)
- Fu-Lai Pei
- Department of Oncology, Linyi Central Hospital, No. 17 Jiankang Road, Linyi, Shandong, China
| | - Ming-Zheng Cao
- Department of General Surgery, Linyi Central Hospital, No. 17 Jiankang Road, Linyi, Shandong, China
| | - Yue-Feng Li
- Department of Oncology, Linyi Central Hospital, No. 17 Jiankang Road, Linyi, Shandong, China
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32
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Ruan J, Wang S, Wang J. Mechanism and regulation of pyroptosis-mediated in cancer cell death. Chem Biol Interact 2020; 323:109052. [PMID: 32169591 DOI: 10.1016/j.cbi.2020.109052] [Citation(s) in RCA: 154] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 02/29/2020] [Accepted: 03/09/2020] [Indexed: 12/18/2022]
Abstract
Pyroptosis, a form of programmed cell death, has garnered increasing attention as it relates to innate immunity and diseases. The discovery of caspase-1/3/4/5/8/11 function in sensing various challenges expands the spectrum of pyroptosis mediators and also reveals that pyroptosis is not cell type specific. Recent studies have identified that pyroptosis has become a new topic in cancer research because it may affect all stages of carcinogenesis. In this mini-review, we provided a primer on pyroptosis, discussed the induction of pyroptosis in cancer and its implications in cancer management. Moreover, its two important executioners, the gasdermin D (GSDMD) and gasdermin E (GSDME), the functions and mechanisms of them involved in the regulation of cancer therapy were focused on. Small molecules-mediated pyroptosis were found to effectively inhibit various tumor cells. In brief, the findings of pyroptosis-dependent cancer progression, new drugs and therapeutic targets may lead to a promising, novel therapeutic approach for cancer patients.
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Affiliation(s)
- Jianwei Ruan
- Municipal Hospital Affiliated to Medical School of Taizhou University, Taizhou, 318000, China.
| | - Shijian Wang
- Municipal Hospital Affiliated to Medical School of Taizhou University, Taizhou, 318000, China
| | - Jiabing Wang
- Municipal Hospital Affiliated to Medical School of Taizhou University, Taizhou, 318000, China.
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Ye X, Liang T, Deng C, Li Z, Yan D. MSRB3 promotes the progression of clear cell renal cell carcinoma via regulating endoplasmic reticulum stress. Pathol Res Pract 2019; 216:152780. [PMID: 31889586 DOI: 10.1016/j.prp.2019.152780] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/29/2019] [Accepted: 12/01/2019] [Indexed: 11/24/2022]
Abstract
BACKGROUND Renal cancer represents about 3 % of all human cancers. Clear cell renal cell carcinoma (ccRCC) is the main type of renal cancer. Methionine sulfoxide reductase B3 (MSRB3) is a protein repair enzyme that specifically catalyzes the reduction of methionine-R-sulfoxide residues and has an antioxidant function. However, MSRB3's role in ccRCC is still obscure. METHODS Immunohistochemical staining and Real-time PCR were used to compare the expression level of MSRB3 in ccRCC tissues and adjacent tissues. Western blot was used to detect the expression of MSRB3 in cell lines. Chi-square test were applied to evaluate the potential of MSRB3 to function as a cancer biomarker. RNA interference was used to inhibit MSRB3 expression in ccRCC cells, followed by detecting cell proliferation, apoptosis, migration and invasion. The markers of endoplasmic reticulum stress were then detected by western blot. RESULTS In this study, we validated that MSRB3 was significantly up-regulated in ccRCC samples and cell lines. It was also demonstrated that the up-regulation of MSRB3 was associated with several clinicopathologic features. Knockdown of MSRB3 remarkably arrested the proliferation, migration and invasion, while promoted apoptosis, and induced the changes of markers of endoplasmic reticulum stress. CONCLUSION In conclusion, we demonstrated that MSRB3 was an oncogene of ccRCC associated with patients' pathological characteristics and modulated endoplasmic reticulum stress of cancer cells.
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Affiliation(s)
- Xuxiao Ye
- Department of Urology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Science, Shanghai, 201306, China
| | - Tao Liang
- Department of Urology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Science, Shanghai, 201306, China
| | - Chao Deng
- Department of Urology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Science, Shanghai, 201306, China
| | - Zuowei Li
- Department of Urology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Science, Shanghai, 201306, China
| | - Dongliang Yan
- Department of Urology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Science, Shanghai, 201306, China.
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