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Jo MY, Jeong YJ, Song KH, Choi YH, Kwon TK, Chang YC. 4-O-Methylascochlorin Synergistically Enhances 5-Fluorouracil-Induced Apoptosis by Inhibiting the Wnt/β-Catenin Signaling Pathway in Colorectal Cancer Cells. Int J Mol Sci 2024; 25:5746. [PMID: 38891932 PMCID: PMC11172374 DOI: 10.3390/ijms25115746] [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: 04/22/2024] [Revised: 05/20/2024] [Accepted: 05/22/2024] [Indexed: 06/21/2024] Open
Abstract
4-O-Methyl-ascochlorin (MAC), a derivative of the prenyl-phenol antibiotic ascochlorin extracted from the fungus Ascochyta viciae, shows anticarcinogenic effects on various cancer cells. 5-Fluorouracil (5-FU) is used to treat colorectal cancer (CRC); however, its efficacy must be enhanced. In this study, we investigated the molecular mechanisms by which MAC acts synergistically with 5-FU to inhibit cell proliferation and induce apoptosis in CRC cells. MAC enhanced the cytotoxic effects of 5-FU by suppressing the Akt/mTOR/p70S6K and Wnt/β-catenin signaling pathways. It also reduced the viability of 5-FU-resistant (5-FU-R) cells. Furthermore, expression of anti-apoptosis-related proteins and cancer stem-like cell (CSC) markers by 5-FU-R cells decreased in response to MAC. Similar to MAC, the knockdown of CTNNB1 induced apoptosis and reduced expression of mRNA encoding CRC markers in 5-FU-R cells. In summary, these results suggest that MAC and other β-catenin modulators may be useful in overcoming the 5-FU resistance of CRC cells.
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Affiliation(s)
- Min-Young Jo
- Research Institute of Biomedical Engineering and Department of Cell Biology, Daegu Catholic University School of Medicine, Daegu 42472, Republic of Korea
| | - Yun-Jeong Jeong
- Research Institute of Biomedical Engineering and Department of Cell Biology, Daegu Catholic University School of Medicine, Daegu 42472, Republic of Korea
| | - Kwon-Ho Song
- Research Institute of Biomedical Engineering and Department of Cell Biology, Daegu Catholic University School of Medicine, Daegu 42472, Republic of Korea
| | - Yung Hyun Choi
- Department of Biochemistry, College of Korean Medicine, Dong-Eui University, Busan 47227, Republic of Korea
| | - Taeg Kyu Kwon
- Department of Immunology, School of Medicine, Keimyung University, Daegu 42601, Republic of Korea
| | - Young-Chae Chang
- Research Institute of Biomedical Engineering and Department of Cell Biology, Daegu Catholic University School of Medicine, Daegu 42472, Republic of Korea
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2
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Liu C, Rokavec M, Huang Z, Hermeking H. Salicylate induces AMPK and inhibits c-MYC to activate a NRF2/ARE/miR-34a/b/c cascade resulting in suppression of colorectal cancer metastasis. Cell Death Dis 2023; 14:707. [PMID: 37898661 PMCID: PMC10613307 DOI: 10.1038/s41419-023-06226-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 10/12/2023] [Accepted: 10/17/2023] [Indexed: 10/30/2023]
Abstract
Aspirin and its active metabolite salicylate have emerged as promising agents for the chemoprevention of colorectal cancer (CRC). Moreover, aspirin suppresses the progression of established CRCs. However, the underlying molecular mechanisms are not completely understood. Here we found that salicylate induces the expression of the miR-34a and miR-34b/c genes, which encode tumor suppressive microRNAs, in a p53-independent manner. Salicylate activated AMPK, thereby activating NRF2, which directly induced miR-34a/b/c expression via ARE motifs. In addition, salicylate suppressed c-MYC, a known repressor of NRF2-mediated transactivation, via activating AMPK. The suppression of c-MYC by salicylate was necessary for NRF2-mediated activation of miR-34a/b/c. Inactivation of miR-34a/b/c largely abrogated the inhibitory effects of salicylate on migration, invasion and metastasis formation by CRC cells. In the future, aspirin and its derivates may be used therapeutically to activate miR-34a and miR-34b/c in tumors that have lost p53.
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Affiliation(s)
- Chunfeng Liu
- Experimental and Molecular Pathology, Institute of Pathology, Faculty of Medicine, Ludwig-Maximilians-Universität München, Thalkirchner Strasse 36, D-80337, Munich, Germany
| | - Matjaz Rokavec
- Experimental and Molecular Pathology, Institute of Pathology, Faculty of Medicine, Ludwig-Maximilians-Universität München, Thalkirchner Strasse 36, D-80337, Munich, Germany
| | - Zekai Huang
- Experimental and Molecular Pathology, Institute of Pathology, Faculty of Medicine, Ludwig-Maximilians-Universität München, Thalkirchner Strasse 36, D-80337, Munich, Germany
| | - Heiko Hermeking
- Experimental and Molecular Pathology, Institute of Pathology, Faculty of Medicine, Ludwig-Maximilians-Universität München, Thalkirchner Strasse 36, D-80337, Munich, Germany.
- German Cancer Consortium (DKTK), Partner site Munich, D-80336, Munich, Germany.
- German Cancer Research Center (DKFZ), D-69210, Heidelberg, Germany.
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3
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Cho Y, Jeong YJ, Song KH, Chung IK, Magae J, Kwon TK, Choi YH, Kwak JY, Chang YC. 4-O-Methylascochlorin-Mediated BNIP-3 Expression Controls the Balance of Apoptosis and Autophagy in Cervical Carcinoma Cells. Int J Mol Sci 2022; 23:ijms232315138. [PMID: 36499465 PMCID: PMC9736141 DOI: 10.3390/ijms232315138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/25/2022] [Accepted: 11/29/2022] [Indexed: 12/03/2022] Open
Abstract
4-O-methylascochlorin (MAC) is a 4-fourth carbon-substituted derivative of ascochlorin, a compound extracted from a phytopathogenic fungus Ascochyta viciae. MAC induces apoptosis and autophagy in various cancer cells, but the effects of MAC on apoptosis and autophagy in cervical cancer cells, as well as how the interaction between apoptosis and autophagy mediates the cellular anticancer effects are not known. Here, we investigated that MAC induced apoptotic cell death of cervical cancer cells without regulating the cell cycle and promoted autophagy by inhibiting the phosphorylation of serine-threonine kinase B (Akt), mammalian target of rapamycin (mTOR), and 70-kDa ribosomal protein S6 kinase (p70S6K). Additional investigations suggested that Bcl-2/adenovirus E1B 19 kDa protein-interacting protein 3 (BNIP-3), but not Hypoxia-inducible factor 1 alpha (HIF-1α), is a key regulator of MAC-induced apoptosis and autophagy. BNIP-3 siRNA suppressed MAC-induced increases in cleaved- poly (ADP-ribose) polymerase (PARP) and LC3II expression. The pan-caspase inhibitor Z-VAD-FMK suppressed MAC-induced cell death and enhanced MAC-induced autophagy. The autophagy inhibitor chloroquine (CQ) enhanced MAC-mediated cell death by increasing BNIP-3 expression. These results indicate that MAC induces apoptosis to promote cell death and stimulates autophagy to promote cell survival by increasing BNIP-3 expression. This study also showed that co-treatment of cells with MAC and CQ further enhanced the death of cervical cancer cells.
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Affiliation(s)
- Yuna Cho
- Research Institute of Biomedical Engineering and Department of Cell Biology, School of Medicine, Catholic University of Daegu, Daegu 42472, Republic of Korea
| | - Yun-Jeong Jeong
- Research Institute of Biomedical Engineering and Department of Cell Biology, School of Medicine, Catholic University of Daegu, Daegu 42472, Republic of Korea
| | - Kwon-Ho Song
- Research Institute of Biomedical Engineering and Department of Cell Biology, School of Medicine, Catholic University of Daegu, Daegu 42472, Republic of Korea
| | - Il-Kyung Chung
- Department of Biotechnology, Catholic University of Daegu, Gyeongsan-Si 38430, Republic of Korea
| | - Junji Magae
- Magae Bioscience Institute, 49-4 Fujimidai, Tsukuba 300-1263, Japan
| | - Taeg Kyu Kwon
- Department of Immunology, School of Medicine, Keimyung University, Daegu 42601, Republic of Korea
| | - Yung-Hyun Choi
- Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan 47227, Republic of Korea
| | - Jong-Young Kwak
- Department of Pharmacology, School of Medicine, Ajou University, Suwon 16499, Republic of Korea
| | - Young-Chae Chang
- Research Institute of Biomedical Engineering and Department of Cell Biology, School of Medicine, Catholic University of Daegu, Daegu 42472, Republic of Korea
- Correspondence:
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Shiau JP, Chuang YT, Tang JY, Yang KH, Chang FR, Hou MF, Yen CY, Chang HW. The Impact of Oxidative Stress and AKT Pathway on Cancer Cell Functions and Its Application to Natural Products. Antioxidants (Basel) 2022; 11:1845. [PMID: 36139919 PMCID: PMC9495789 DOI: 10.3390/antiox11091845] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/14/2022] [Accepted: 09/16/2022] [Indexed: 01/10/2023] Open
Abstract
Oxidative stress and AKT serine-threonine kinase (AKT) are responsible for regulating several cell functions of cancer cells. Several natural products modulate both oxidative stress and AKT for anticancer effects. However, the impact of natural product-modulating oxidative stress and AKT on cell functions lacks systemic understanding. Notably, the contribution of regulating cell functions by AKT downstream effectors is not yet well integrated. This review explores the role of oxidative stress and AKT pathway (AKT/AKT effectors) on ten cell functions, including apoptosis, autophagy, endoplasmic reticulum stress, mitochondrial morphogenesis, ferroptosis, necroptosis, DNA damage response, senescence, migration, and cell-cycle progression. The impact of oxidative stress and AKT are connected to these cell functions through cell function mediators. Moreover, the AKT effectors related to cell functions are integrated. Based on this rationale, natural products with the modulating abilities for oxidative stress and AKT pathway exhibit the potential to regulate these cell functions, but some were rarely reported, particularly for AKT effectors. This review sheds light on understanding the roles of oxidative stress and AKT pathway in regulating cell functions, providing future directions for natural products in cancer treatment.
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Affiliation(s)
- Jun-Ping Shiau
- Division of Breast Oncology and Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan or
| | - Ya-Ting Chuang
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Jen-Yang Tang
- School of Post-Baccalaureate Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Radiation Oncology, Kaohsiung Medical University Hospital, Kaoshiung Medical University, Kaohsiung 80708, Taiwan
| | - Kun-Han Yang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Ming-Feng Hou
- Division of Breast Oncology and Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan or
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Ching-Yu Yen
- Department of Oral and Maxillofacial Surgery, Chi-Mei Medical Center, Tainan 71004, Taiwan
- School of Dentistry, Taipei Medical University, Taipei 11031, Taiwan
| | - Hsueh-Wei Chang
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
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Liu G, Li D, Zhang L, Xu Q, Zhuang D, Liu P, Hu L, Deng H, Sun J, Wang S, Zheng B, Guo J, Wu X. Phenformin Down-Regulates c-Myc Expression to Suppress the Expression of Pro-Inflammatory Cytokines in Keratinocytes. Cells 2022; 11:cells11152429. [PMID: 35954273 PMCID: PMC9368166 DOI: 10.3390/cells11152429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/27/2022] [Accepted: 08/02/2022] [Indexed: 11/16/2022] Open
Abstract
The treatment of many skin inflammation diseases, such as psoriasis and atopic dermatitis, is still a challenge and inflammation plays important roles in multiple stages of skin tumor development, including initiation, promotion and metastasis. Phenformin, a biguanide drug, has been shown to play a more efficient anti-tumor function than another well-known biguanide drug, metformin, which has been reported to control the expression of pro-inflammatory cytokines; however, little is known about the effects of phenformin on skin inflammation. This study used a mouse acute inflammation model, ex vivo skin organ cultures and in vitro human primary keratinocyte cultures to demonstrate that phenformin can suppress acute skin inflammatory responses induced by 12-O-tetradecanoylphorbol-13-acetate (TPA) in vivo and significantly suppresses the pro-inflammatory cytokines IL-1β, IL-6 and IL-8 in human primary keratinocytes in vitro. The suppression of pro-inflammatory cytokine expression by phenformin was not directly through regulation of the MAPK or NF-κB pathways, but by controlling the expression of c-Myc in human keratinocytes. We demonstrated that the overexpression of c-Myc can induce pro-inflammatory cytokine expression and counteract the suppressive effect of phenformin on cytokine expression in keratinocytes. In contrast, the down-regulation of c-Myc produces effects similar to phenformin, both in cytokine expression by keratinocytes in vitro and in skin inflammation in vivo. Finally, we showed that phenformin, as an AMPK activator, down-regulates the expression of c-Myc through regulation of the AMPK/mTOR pathways. In summary, phenformin inhibits the expression of pro-inflammatory cytokines in keratinocytes through the down-regulation of c-Myc expression to play an anti-inflammation function in the skin.
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Affiliation(s)
- Guanyi Liu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
| | - Dingyang Li
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, Savaid Stomatology School, Hangzhou Medical College, Ningbo 315000, China
| | - Liwei Zhang
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, Savaid Stomatology School, Hangzhou Medical College, Ningbo 315000, China
| | - Qiuping Xu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
| | - Dexuan Zhuang
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
| | - Panpan Liu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Department of Pediatrics Dentistry, Department of Preventive Dentistry, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
| | - Ling Hu
- Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, Savaid Stomatology School, Hangzhou Medical College, Ningbo 315000, China
| | - Huiting Deng
- Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, Savaid Stomatology School, Hangzhou Medical College, Ningbo 315000, China
| | - Jianfeng Sun
- Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, Savaid Stomatology School, Hangzhou Medical College, Ningbo 315000, China
| | - Shuangshuang Wang
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
| | - Bin Zheng
- Cutaneous Biology Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02129, USA
| | - Jing Guo
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, Savaid Stomatology School, Hangzhou Medical College, Ningbo 315000, China
- Correspondence: (J.G.); (X.W.)
| | - Xunwei Wu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, Savaid Stomatology School, Hangzhou Medical College, Ningbo 315000, China
- Correspondence: (J.G.); (X.W.)
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4-O-methylascochlorin-stimulated HIF-1α expression induces the epithelial mesenchymal transition and cell survival in breast cancer cells. Toxicol In Vitro 2022; 81:105342. [DOI: 10.1016/j.tiv.2022.105342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 02/14/2022] [Accepted: 02/26/2022] [Indexed: 11/24/2022]
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You R, Hou D, Wang B, Liu J, Wang X, Xiao Q, Pan Z, Li D, Feng X, Kang L, Chen P, Huang H. Bone marrow microenvironment drives AML cell OXPHOS addiction and AMPK inhibition to resist chemotherapy. J Leukoc Biol 2021; 112:299-311. [PMID: 34927743 PMCID: PMC9544716 DOI: 10.1002/jlb.6a0821-409rr] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 11/19/2021] [Accepted: 12/02/2021] [Indexed: 12/17/2022] Open
Abstract
The stromal niche plays a pivotal role in AML chemoresistance and energy metabolism reprogramming is a hallmark of a tumor. 5′‐Adenosine monophosphate‐activated protein kinase (AMPK) is an important energy sensor suppressing mammalian target of rapamycin complex 1 (mTORC1) activity. However, the role of AMPK‐mTORC1 pathway on connecting AML cell energy metabolism reprogramming and chemoresistance induced by the bone marrow microenvironment (BMM) is not defined. Here, with a co‐culture system that simulates the interaction between BMM and AML cells, it is shown that stromal contact led to a decreased sensitivity to chemotherapy accompanied by an increase of oxidative phosphorylation (OXPHOS) activity and mitochondrial ATP synthesis in AML cells. The increased OXPHOS activity and excessive ATP production promoted chemoresistance of AML cells through inhibiting AMPK activity and in turn activating mTORC1 activity. In an in vivo AML mouse model, depletion of AMPK activity with genetic targeting promoted AML progression and reduced their sensitivity to chemotherapeutic drugs. Collectively, AML cells’ acquired increased OXPHOS activity as well as AMPK inhibition could be therapeutically exploited in an effort to overcome BMM‐mediated chemoresistance.
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Affiliation(s)
- Ruolan You
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Diyu Hou
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Bin Wang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Jingru Liu
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Xiaoting Wang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Qirong Xiao
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Zhipeng Pan
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Dongliang Li
- Department of Hepatobiliary Disease, The 900th Hospital of the People's Liberation Army Joint Service Support Force, Fuzhou, Fujian, China
| | - Xiaoming Feng
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Lixia Kang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Ping Chen
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Huifang Huang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
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De Smedt E, Devin J, Muylaert C, Robert N, Requirand G, Vlummens P, Vincent L, Cartron G, Maes K, Moreaux J, De Bruyne E. G9a/GLP targeting in MM promotes autophagy-associated apoptosis and boosts proteasome inhibitor-mediated cell death. Blood Adv 2021; 5:2325-2338. [PMID: 33938943 PMCID: PMC8114552 DOI: 10.1182/bloodadvances.2020003217] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 02/24/2021] [Indexed: 12/16/2022] Open
Abstract
Multiple myeloma (MM) is an (epi)genetic highly heterogeneous plasma cell malignancy that remains mostly incurable. Deregulated expression and/or genetic defects in epigenetic-modifying enzymes contribute to high-risk disease and MM progression. Overexpression of the histone methyltransferase G9a was reported in several cancers, including MM, correlating with disease progression, metastasis, and poor prognosis. However, the exact role of G9a and its interaction partner G9a-like protein (GLP) in MM biology and the underlying mechanisms of action remain poorly understood. Here, we report that high G9a RNA levels are associated with a worse disease outcome in newly diagnosed and relapsed MM patients. G9a/GLP targeting using the specific G9a/GLP inhibitors BIX01294 and UNC0638 induces a G1-phase arrest and apoptosis in MM cell lines and reduces primary MM cell viability. Mechanistic studies revealed that G9a/GLP targeting promotes autophagy-associated apoptosis by inactivating the mTOR/4EBP1 pathway and reducing c-MYC levels. Moreover, genes deregulated by G9a/GLP targeting are associated with repressive histone marks. G9a/GLP targeting sensitizes MM cells to the proteasome inhibitors (PIs) bortezomib and carfilzomib, by (further) reducing mTOR signaling and c-MYC levels and activating p-38 and SAPK/JNK signaling. Therapeutic treatment of 5TGM1 mice with BIX01294 delayed in vivo MM tumor growth, and cotreatment with bortezomib resulted in a further reduction in tumor burden and a significantly prolonged survival. In conclusion, we provide evidence that the histone methyltransferases G9a/GLP support MM cell growth and survival by blocking basal autophagy and sustaining high c-MYC levels. G9a/GLP targeting represents a promising strategy to improve PI-based treatment in patients with high G9a/GLP levels.
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Affiliation(s)
- Eva De Smedt
- Department of Hematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
| | - Julie Devin
- IGH, CNRS, University of Montpellier, Montpellier, France
| | - Catharina Muylaert
- Department of Hematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
| | - Nicolas Robert
- IGH, CNRS, University of Montpellier, Montpellier, France
- Laboratory for Monitoring Innovative Therapies, Department of Biological Hematology, CHU Montpellier, Montpellier, France
| | - Guilhem Requirand
- IGH, CNRS, University of Montpellier, Montpellier, France
- Laboratory for Monitoring Innovative Therapies, Department of Biological Hematology, CHU Montpellier, Montpellier, France
| | - Philip Vlummens
- Department of Hematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
- Hematology, Department of Internal Medicine, Ghent University Hospital, Ghent, Belgium
| | - Laure Vincent
- Department of Clinical Hematology, CHU Montpellier, Montpellier, France
| | - Guillaume Cartron
- Department of Clinical Hematology, CHU Montpellier, Montpellier, France
- Institut de Génétique Moléculaire de Montpellier, CNRS, University of Montpellier, Montpellier, France; and
| | - Ken Maes
- Department of Hematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
| | - Jerome Moreaux
- IGH, CNRS, University of Montpellier, Montpellier, France
- Laboratory for Monitoring Innovative Therapies, Department of Biological Hematology, CHU Montpellier, Montpellier, France
- Institut Universitaire de France, Paris, France
| | - Elke De Bruyne
- Department of Hematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
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Abdelwahab EMM, Bovari-Biri J, Smuk G, Fillinger J, McPhail D, Krymskaya VP, Pongracz JE. Activated p53 in the anti-apoptotic milieu of tuberous sclerosis gene mutation induced diseases leads to cell death if thioredoxin reductase is inhibited. Apoptosis 2021; 26:253-260. [PMID: 33860865 PMCID: PMC8197715 DOI: 10.1007/s10495-021-01670-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/04/2021] [Indexed: 12/17/2022]
Abstract
Tuberous sclerosis, angiomyolipoma and lymphangioleiomyomatosis are a group of diseases characterized by mutation in tuberous sclerosis genes (TSC 1-2). TSC mutation leads to continuous activation of the mTOR pathway that requires adaptation to increased ATP requirement. With limited treatment options, there is an increasing demand to identify novel therapeutic targets and to understand the correlations between mTOR pathway activation and the lack of cell death in the presence of TSC mutation. In the current study, we demonstrate deregulation of p53 controlled and mitochondria associated cell death processes. The study also reveals that treatment of TSC mutant cells with the drug candidate Proxison combined with reduced concentration of rapamycin can increase production of reactive oxygen species (ROS), can modify miRNA expression pattern associated with p53 regulation and can reduce cell viability.
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Affiliation(s)
- ElHusseiny M M Abdelwahab
- Department of Pharmaceutical Biotechnology, University of Pecs, Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, 20 Ifjusag Str., Pecs, 7624, Hungary
| | - Judit Bovari-Biri
- Department of Pharmaceutical Biotechnology, University of Pecs, Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, 20 Ifjusag Str., Pecs, 7624, Hungary
| | - Gabor Smuk
- Department of Pathology, University of Pecs, Pecs, Hungary
| | - Janos Fillinger
- Department of Pathology, Semmelweis University, Budapest, Hungary
- National Koranyi Institute of Pulmonology, Budapest, Hungary
| | | | - Vera P Krymskaya
- Pulmonary, Allergy and Critical Care Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - Judit E Pongracz
- Department of Pharmaceutical Biotechnology, University of Pecs, Pecs, Hungary.
- Szentagothai Research Centre, University of Pecs, 20 Ifjusag Str., Pecs, 7624, Hungary.
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, University of Pecs, 2 Rokus Str, Pecs, 7624, Hungary.
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10
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Digiacomo G, Fumarola C, La Monica S, Bonelli MA, Cretella D, Alfieri R, Cavazzoni A, Galetti M, Bertolini P, Missale G, Petronini PG. Simultaneous Combination of the CDK4/6 Inhibitor Palbociclib With Regorafenib Induces Enhanced Anti-tumor Effects in Hepatocarcinoma Cell Lines. Front Oncol 2020; 10:563249. [PMID: 33072590 PMCID: PMC7539564 DOI: 10.3389/fonc.2020.563249] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 08/20/2020] [Indexed: 12/28/2022] Open
Abstract
Advanced hepatocarcinoma (HCC) is an aggressive malignancy with poor prognosis and limited treatment options. Alterations of the cyclin D-CDK4/6-Rb pathway occur frequently in HCC, providing the rationale for its targeting at least in a molecular subset of HCC. In a panel of HCC cell lines, we investigated whether the CDK4/6 inhibitor palbociclib might improve the efficacy of regorafenib, a powerful multi-kinase inhibitor approved as second-line treatment for advanced HCC after sorafenib failure and currently under clinical investigation as first-line therapy in combination with immunotherapy. In Rb-proficient cells, the simultaneous drug combination, but not the sequential schedules, inhibited cell proliferation, either in short or in long-term experiments, and induced cell death more strongly than individual treatments. Moreover, the combination significantly reduced spheroid cell growth and inhibited cell migration/invasion. The superior efficacy of palbociclib plus regorafenib emerged also under hypoxia and was associated with a significant down-regulation of CDK4/6-Rb-myc and mTORC1/p70S6K signaling. Moreover, regorafenib suppressed palbociclib-induced expression of cyclin D1 contributing to the cytotoxic effects of the combination. Besides these inhibitory effects on cell viability/proliferation, palbociclib and regorafenib reduced glucose uptake, although this effect was dependent on the cell model and on the oxygen availability (normoxia or hypoxia). Palbociclib and regorafenib combination impaired glucose uptake and utilization, down-regulating basal and hypoxia-induced expression of HIF-1α, HIF-2α, GLUT-1, and MCT4 proteins as well as the activity/expression of glycolytic enzymes (HK2, PFKP, aldolase A, PKM2). In addition, regorafenib alone reduced mitochondrial respiration. The combined treatment impaired glucose metabolism and respiration without enhancing the effects of the single agents. Our findings provide pre-clinical evidence for the effectiveness of palbociclib and regorafenib combination in HCC cell models.
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Affiliation(s)
| | - Claudia Fumarola
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Silvia La Monica
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Mara A Bonelli
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Daniele Cretella
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Roberta Alfieri
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Andrea Cavazzoni
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Maricla Galetti
- Istituto Nazionale per l'Assicurazione contro gli Infortuni sul Lavoro (INAIL) Research, Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, Rome, Italy
| | - Patrizia Bertolini
- Paediatric Hematology Oncology Unit, University Hospital of Parma, Parma, Italy
| | - Gabriele Missale
- Department of Medicine and Surgery, University of Parma, Parma, Italy.,Unit of Infectious Diseases and Hepatology, University Hospital of Parma, Parma, Italy
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11
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Hwang SK, Han SY, Jeong YJ, Magae J, Bae YS, Chang YC. 4-O-methylascochlorin activates autophagy by activating AMPK and suppressing c-Myc in glioblastoma. J Biochem Mol Toxicol 2020; 34:e22552. [PMID: 32562591 DOI: 10.1002/jbt.22552] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 04/24/2020] [Accepted: 06/05/2020] [Indexed: 12/25/2022]
Abstract
A prior study identified that 4-O-methylascochlorin (MAC), a methylated derivative of ascochlorin (ASC) from the fungus Ascochyta viciae, activates autophagy in leukemia cells by suppressing c-Myc phosphorylation. However, the effects of MAC on autophagy in other cancer cells remain unknown. In the present study, we demonstrated that MAC activated autophagy in human glioblastoma. MAC increased expression of autophagy-related proteins, such as LC3-II and Beclin-1. Moreover, MAC stimulated AMP-activated protein kinase (AMPK) phosphorylation and suppressed phosphorylation of the mTOR, p70S6K, and 4EBP1. The well-known AMPK activator metformin increased LC3-II levels, which were augmented by MAC cotreatment. AMPK knockdown decreased LC3-II levels and inhibited MAC activation of autophagy. Furthermore, MAC suppression of c-Myc expression activated autophagy. Treatment with the c-MYC inhibitor, 10058-FA, induced autophagy, as did c-Myc small interfering RNA knockdown. These effects were augmented by MAC cotreatment. Taken together, these findings indicated that MAC induces autophagy in human glioblastoma by activating AMPK signaling and inhibiting c-Myc protein expression in human glioblastoma.
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Affiliation(s)
- Soon-Kyung Hwang
- Department of Medicine, Research Institute of Biomedical Engineering, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
| | - Si-Yoon Han
- Department of Medicine, Research Institute of Biomedical Engineering, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
| | - Yun-Jeong Jeong
- Department of Medicine, Research Institute of Biomedical Engineering, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
| | | | - Young-Seuk Bae
- BK21 Plus KNU Creative BioResearch Group, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Young-Chae Chang
- Department of Medicine, Research Institute of Biomedical Engineering, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
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12
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Challenges and Opportunities for High-grade B-Cell Lymphoma With MYC and BCL2 and/or BCL6 Rearrangement (Double-hit Lymphoma). Am J Clin Oncol 2019; 42:304-316. [PMID: 29419530 DOI: 10.1097/coc.0000000000000427] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The most common subtype of non-Hodgkin lymphoma, diffuse large B-cell lymphoma, is cured in approximately two thirds of patients after initial therapy. The remaining one-third of patients who suffer relapse or become refractory have very poor survival outcomes despite salvage chemotherapy with or without stem cell transplantation. A considerable proportion of relapsed or refractory large B cells belong to the WHO subtype known as high-grade B-cell lymphoma with rearrangement of MYC and BCL2 and/or BCL6, also known as double-hit lymphoma (DHL). Most DHL patients present with Ann Arbor's stage III/IV, a comparatively higher rate of extranodal involvement including bone marrow and central nervous system infiltration, high levels of lactate dehydrogenase, and an elevated Ki67 expression in the tumor cells. Newer therapeutic approaches, including targeted therapy against BCL2, MYC, or other associated pathways, are needed. In addition, recent therapies that harness the immune system, such as checkpoint inhibitors and chimeric antigen receptor T-cell therapy, are changing the paradigm of treatment for non-Hodgkin lymphoma and could impact the outcome of DHL.
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13
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Jia X, Zheng Y, Guo Y, Chen K. Sodium butyrate and panobinostat induce apoptosis of chronic myeloid leukemia cells via multiple pathways. Mol Genet Genomic Med 2019; 7:e613. [PMID: 30891950 PMCID: PMC6503025 DOI: 10.1002/mgg3.613] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 01/05/2019] [Accepted: 02/10/2019] [Indexed: 12/19/2022] Open
Abstract
Purpose Histone deacetylase inhibitor (HDACI) is a novel therapeutic option for cancer. However, the effects of HDACIs on chronic myeloid leukemia (CML) and the underlying mechanisms are still unknown. The aim of this study was to investigate the effect and the mechanism‐of‐action of two HDACI members, sodium butyrate (NaBu) and panobinostat (LBH589) in K562 and the adriamycin–resistant cell line K562/ADR. Methods Cell viability was assessed using MTT assay. Cell apoptosis was detected with flow cytometry. Cell cycle analysis and western blot were performed to explore the possible molecules related to HDACIs effects. Results The effect of NaBu was more powerful on K562/ADR than on K562 cells. LBH589 triggered apoptosis and inhibited the growth of K562 cells. Both HDACIs inhibited K562 and K562/ADR cells via activation of intrinsic/extrinsic apoptotic pathways and inhibition of AKT‐mTOR pathway while NaBu also activated endoplasmic reticulum stress (ERS) mediated apoptotic pathway in K562/ADR cells. LBH589 reduced the expression of drug–resistant related proteins in K562 cells. However, neither NaBu nor LBH589 could significantly influence the expression of the drug–resistant related proteins in K562/ADR cells. Conclusion The combination of HDACI and other therapeutic strategies are likely required to overcome drug resistance in CML therapy.
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Affiliation(s)
- Xiaoyuan Jia
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yinsuo Zheng
- Department of Hematology, Baoji Central Hospital, Baoji, China
| | - Yanzi Guo
- The Second Affiliated Hospital of Shaanxi Traditional University, Xianyang, China
| | - Kan Chen
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, China
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14
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Zheng GD, Hu PJ, Chao YX, Zhou Y, Yang XJ, Chen BZ, Yu XY, Cai Y. Nobiletin induces growth inhibition and apoptosis in human nasopharyngeal carcinoma C666-1 cells through regulating PARP-2/SIRT1/AMPK signaling pathway. Food Sci Nutr 2019; 7:1104-1112. [PMID: 30918653 PMCID: PMC6418462 DOI: 10.1002/fsn3.953] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 12/29/2018] [Accepted: 01/06/2019] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND/AIM Nobiletin, a major polymethoxyflavones (PMFs) from citri reticulatae pericarpium (CRP), can inhibit several forms of cancer proliferation. However, the effects of nobiletin on nasopharyngeal carcinoma (NPC) C666-1 cells remain largely unknown. MATERIALS AND METHODS Cell counting kit 8 (CCK8) assay was used to measure cell vitality. Flow cytometry was performed to measure the apoptosis rate. Quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot analysis were applied to determine the expression of mRNA and protein, respectively. RESULTS We showed that the proliferation rate of C666-1 cells was inhibited and the apoptosis rate was raised after treating with nobiletin. Moreover, nobiletin inhibited the expression of poly(ADP-ribose)polymerase-2 (PARP-2), and the tumor suppression effect of nobiletin on C666-1 is associated with PARP-2-dependent pathway. CONCLUSION We demonstrated for the first time that nobiletin inhibited the growth of C666-1 cells, which may be relative to its regulation on PARP-2/SIRT1/AMPK signaling pathway. Our result implied that nobiletin may serve as a strategy to treat nasopharyngeal carcinoma.
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Affiliation(s)
- Guo Dong Zheng
- Key Laboratory of Molecular Target & Clinical PharmacologyState Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhou 511436China
| | - Ping Jun Hu
- Key Laboratory of Molecular Target & Clinical PharmacologyState Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhou 511436China
| | - Ying Xin Chao
- Key Laboratory of Molecular Target & Clinical PharmacologyState Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhou 511436China
| | - Ying Zhou
- Key Laboratory of Molecular Target & Clinical PharmacologyState Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhou 511436China
| | - Xiu Juan Yang
- Key Laboratory of Molecular Target & Clinical PharmacologyState Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhou 511436China
| | - Bai Zhong Chen
- Guangdong Xinbaotang Biological Technology Co, LtdJiangmenChina
| | - Xi Yong Yu
- Key Laboratory of Molecular Target & Clinical PharmacologyState Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhou 511436China
| | - Yi Cai
- Key Laboratory of Molecular Target & Clinical PharmacologyState Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhou 511436China
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15
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4-O-Methylascochlorin inhibits the prolyl hydroxylation of hypoxia-inducible factor-1α, which is attenuated by ascorbate. J Antibiot (Tokyo) 2019; 72:271-281. [PMID: 30796332 DOI: 10.1038/s41429-019-0157-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 01/14/2019] [Accepted: 01/31/2019] [Indexed: 12/27/2022]
Abstract
4-O-Methylascochlorin (MAC), a methylated derivative of ascochlorin, was previously shown to promote the accumulation of hypoxia-inducible factor (HIF)-1α in human breast adenocarcinoma MCF-7 cells. In the present study, we further investigated the effects of MAC on the expression and function of HIF-1α in human fibrosarcoma HT-1080 cells. MAC promoted the accumulation of the HIF-1α protein without affecting its constitutive mRNA expression and augmented the transcriptional activation of HIF target genes. Ascorbate, but not N-acetylcysteine, attenuated MAC-mediated HIF-1α accumulation. MAC-induced increases in HIF-1α transcriptional activity were also attenuated by ascorbate. MAC inhibited the hydroxylation of HIF-1α at the proline 564 residue, while it was reversed by ascorbate. MAC slightly decreased the intracellular concentration of ascorbate. The present results demonstrated that MAC promoted the accumulation of HIF-1α by preventing prolyl hydroxylation, and ascorbate attenuated the MAC-mediated inhibition of HIF-1α prolyl hydroxylation.
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16
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Xu XH, Zhang SJ, Hu QB, Song XY, Pan W. Retracted: Effects of microRNA-494 on proliferation, migration, invasion, and apoptosis of medulloblastoma cells by mediating c-myc through the p38 MAPK signaling pathway. J Cell Biochem 2019; 120:2594-2606. [PMID: 30304554 DOI: 10.1002/jcb.27559] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 08/06/2018] [Indexed: 02/02/2023]
Abstract
Medulloblastoma (MB) is the most prevalent brain tumor that occurs during childhood and originates from cerebellar granule cell precursors. Based on recent studies, the differential expression of several microRNAs is involved in MB, while the role of microRNA-494 (miR-494) in MB remains unclear. Therefore, we conducted this study to investigate the regulative role of miR-494 in MB cells via the p38 mitogen-activated protein kinase (MAPK) signaling pathway by mediating c-myc. In the current study, MB cells were collected and transfected with miR-494 mimic, miR-494 inhibitor, siRNA- c-myc, and miR-494 inhibitor + siRNA-c-myc. The expressions of miR-494, c-myc, p38 MAPK, B-cell lymphoma-2 (Bcl-2), Bcl-2-associated X protein (Bax), interleukin-6 (IL-6), metadherin (MTDH), phosphatase and tensin homolog (PTEN) and survivin were determined. Cell proliferation, cell-cycle distribution, apoptosis, migration, and invasion were evaluated. The results revealed that there was a poor expression of miR-494 and high expression of c-myc in MB tissues. C-myc was determined as the target gene of miR-494. In response to miR-494 mimic, MB cells were found to have increased Bax and PTEN expressions, as well as cell number in G1 phase and cell apoptosis and decreased c-myc, p38 MAPK, Bcl-2, MTDH, IL-6, and survivin expression and cell number count in the S phase, cell proliferation, migration, and invasion. In conclusion, the results demonstrated that the upregulation of miR-494 results in the suppression of cell proliferation, migration, and invasion, while it promotes apoptosis of MB cells through the negative mediation of c-myc, which in turn inactivates the p38 MAPK pathway.
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Affiliation(s)
- Xiao-Heng Xu
- Department of Pediatrics, The Second Hospital of Jilin University, Changchun, China
| | - Si-Jin Zhang
- Department of Pediatrics, The Second Hospital of Jilin University, Changchun, China
| | - Qi-Bo Hu
- Department of Pediatrics, The Second Hospital of Jilin University, Changchun, China
| | - Xing-Yu Song
- Department of Pediatrics, The Second Hospital of Jilin University, Changchun, China
| | - Wei Pan
- Department of Pediatrics, The Second Hospital of Jilin University, Changchun, China
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18
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Min-Wen JC, Yan-Jiang BC, Mishra S, Dai X, Magae J, Shyh-Chang N, Kumar AP, Sethi G. Molecular Targets of Ascochlorin and Its Derivatives for Cancer Therapy. STRESS AND INFLAMMATION IN DISORDERS 2017; 108:199-225. [DOI: 10.1016/bs.apcsb.2017.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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19
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Magaye R, Gu Y, Wang Y, Su H, Zhou Q, Mao G, Shi H, Yue X, Zou B, Xu J, Zhao J. In vitro and in vivo evaluation of the toxicities induced by metallic nickel nano and fine particles. J Mol Histol 2016. [PMID: 27010930 DOI: 10.1007/s10735‐016‐9671‐6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Nickel nanoparticles (Ni NPs) have been applied in various fields along with the rapid development of nanotechnology. However, the potential adverse health effects of the Ni NPs are unclear. To investigate the cyto- and genotoxicity and compare the differences between the Ni NPs and the nickel fine particles (Ni FPs), Sprague-Dawley (SD) rats and A549 cells were treated with different doses of Ni NPs or FPs. Intra-tracheal instillation of Ni NPs and FPs caused acute toxicity in the lungs, liver and kidneys of the SD rats. Even though the histology of the lungs showed hyperplastic changes and the protein expression of HO-1 and Nrf2 detected by western blot showed lung burden overload, no significant increase was observed to the expression level of oncoprotein C-myc. The results from cell titer-Glo assay and comet assay indicated that Ni NPs were more potent in causing cell toxicity and genotoxicity in vitro than Ni FPs. In addition, Ni NPs increased the expression of C-myc in vitro, but these increases may not have been due to oxidative stress since no significant dose-dependent changes were seen in HO-1 and Nrf2 expressions. Although Ni NPs have the potential to cause DNA damage in A549 cells in vitro, the molecular mechanisms that led to these changes and their tumorigenic potential is still debatable. In short, Ni NPs were more potent in causing cell toxicity and genotoxicity in vitro than Ni FPs, and intra-tracheal instillation of Ni NPs and FPs caused toxicity in organs of the SD rats, while it showed similar to the effects for both particle types. These results suggested that both Ni NPs and FPs have the potential to be harmful to human health, and Ni NPs may have higher cyto- and genotoxic effects than Ni FPs under the same treatment dose.
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Affiliation(s)
- Ruth Magaye
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Yuanliang Gu
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Yafei Wang
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Hong Su
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Qi Zhou
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Guochuan Mao
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Hongbo Shi
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Xia Yue
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Baobo Zou
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Jin Xu
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Jinshun Zhao
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China.
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20
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Magaye R, Gu Y, Wang Y, Su H, Zhou Q, Mao G, Shi H, Yue X, Zou B, Xu J, Zhao J. In vitro and in vivo evaluation of the toxicities induced by metallic nickel nano and fine particles. J Mol Histol 2016; 47:273-86. [PMID: 27010930 DOI: 10.1007/s10735-016-9671-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 03/11/2016] [Indexed: 11/27/2022]
Abstract
Nickel nanoparticles (Ni NPs) have been applied in various fields along with the rapid development of nanotechnology. However, the potential adverse health effects of the Ni NPs are unclear. To investigate the cyto- and genotoxicity and compare the differences between the Ni NPs and the nickel fine particles (Ni FPs), Sprague-Dawley (SD) rats and A549 cells were treated with different doses of Ni NPs or FPs. Intra-tracheal instillation of Ni NPs and FPs caused acute toxicity in the lungs, liver and kidneys of the SD rats. Even though the histology of the lungs showed hyperplastic changes and the protein expression of HO-1 and Nrf2 detected by western blot showed lung burden overload, no significant increase was observed to the expression level of oncoprotein C-myc. The results from cell titer-Glo assay and comet assay indicated that Ni NPs were more potent in causing cell toxicity and genotoxicity in vitro than Ni FPs. In addition, Ni NPs increased the expression of C-myc in vitro, but these increases may not have been due to oxidative stress since no significant dose-dependent changes were seen in HO-1 and Nrf2 expressions. Although Ni NPs have the potential to cause DNA damage in A549 cells in vitro, the molecular mechanisms that led to these changes and their tumorigenic potential is still debatable. In short, Ni NPs were more potent in causing cell toxicity and genotoxicity in vitro than Ni FPs, and intra-tracheal instillation of Ni NPs and FPs caused toxicity in organs of the SD rats, while it showed similar to the effects for both particle types. These results suggested that both Ni NPs and FPs have the potential to be harmful to human health, and Ni NPs may have higher cyto- and genotoxic effects than Ni FPs under the same treatment dose.
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Affiliation(s)
- Ruth Magaye
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Yuanliang Gu
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Yafei Wang
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Hong Su
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Qi Zhou
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Guochuan Mao
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Hongbo Shi
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Xia Yue
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Baobo Zou
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Jin Xu
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China
| | - Jinshun Zhao
- Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, 818 Fenghua Road, Jiangbei District, Ningbo, 315211, China.
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