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Fei H, Jin Y, Jiang N, Zhou Y, Wei N, Liu Y, Miao J, Zhang L, Li R, Zhang A, Du S. Gint4.T-siHDGF chimera-capped mesoporous silica nanoparticles encapsulating temozolomide for synergistic glioblastoma therapy. Biomaterials 2024; 306:122479. [PMID: 38295649 DOI: 10.1016/j.biomaterials.2024.122479] [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: 09/18/2023] [Revised: 12/19/2023] [Accepted: 01/20/2024] [Indexed: 03/01/2024]
Abstract
Due to glioblastoma (GBM) being the most intractable brain tumor, the continuous improvement of effective treatment methods is indispensable. The combination of siRNA-based gene therapy and chemotherapy for GBM treatment has now manifested great promise. Herein, Gint4.T-siHDGF chimera-capped mesoporous silica nanoparticles (MSN) encapsulating chemotherapy drug temozolomide (TMZ), termed as TMSN@siHDGF-Gint4.T, is developed to co-deliver gene-drug siHDGF and TMZ for synergistic GBM therapy. TMSN@siHDGF-Gint4.T possesses spherical nucleic acid-like architecture that can improve the enzyme resistance of siHDGF and increase the blood-brain barrier (BBB) permeability of the nanovehicle. The aptamer Gint4.T of chimera endows the nanovehicle with GBM cell-specific binding ability. When administered systemically, TMSN@siHDGF-Gint4.T can traverse BBB and enter GBM cells. In the acidic lysosome environment, the cleavage of benzoic-imine bond on MSN surface leads to an initial rapid release of chimera, followed by a slow release of TMZ encapsulated in MSN. The sequential release of siHDGF and TMZ first allows siHDGF to exert its gene-silencing effect, and the downregulation of HDGF expression further enhances the cytotoxicity of TMZ. In vivo experimental results have demonstrated that TMSN@siHDGF-Gint4.T significantly inhibits tumor growth and extends the survival time of GBM-bearing mice. Thus, the as-developed TMSN@siHDGF-Gint4.T affords a potential approach for the combination treatment of GBM.
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Affiliation(s)
- Huaijun Fei
- School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Yang Jin
- School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Nan Jiang
- School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Yuhan Zhou
- School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Ningcheng Wei
- School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Yifan Liu
- School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Jiayi Miao
- School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Liying Zhang
- School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Rui Li
- School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, 211166, China.
| | - Aixia Zhang
- School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, 211166, China.
| | - Shuhu Du
- School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, 211166, China; Kangda College, Nanjing Medical University, Lianyungang, Jiangsu, 222000, China.
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Fu JL, Hao HF, Wang S, Jiao YN, Li PP, Han SY. Marsdenia tenacissima extract disturbs the interaction between tumor-associated macrophages and non-small cell lung cancer cells by targeting HDGF. JOURNAL OF ETHNOPHARMACOLOGY 2022; 298:115607. [PMID: 35973634 DOI: 10.1016/j.jep.2022.115607] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 07/29/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Marsdenia tenacissima (Roxb.) Wight et Arn. is a traditional Chinese herbal medicine, and its water-soluble ingredient Marsdenia tenacissima extract (MTE), was widely used for cancer treatment. The multi-pharmacological efficacies and mechanisms of MTE in directly inhibiting tumor cells have been extensively studied. However, the anti-tumor effects of MTE in the tumor-associated macrophages (TAMs) microenvironment remain unclear. AIM OF THE STUDY To uncover the role of hepatoma-derived growth factor (HDGF) in the interaction between TAMs and non-small cell lung cancer (NSCLC) cells. To evaluate the anti-tumor effects of MTE on the vicious crosstalk between TAMs and NSCLC by targeting HDGF. MATERIALS AND METHODS HDGF-overexpression PC-9 and H292 NSCLC cell lines were constructed and verified. RNA-sequencing (RNA-seq) was performed in HDGF-overexpression PC-9 cells to probe the differential expression of genes. THP-1-derived macrophages were characterized using specific markers after stimulation with phorbol-12-myristate 13-acetate (PMA) and rhIL-4 or rhHDGF. The role of HDGF both in NSCLC cells and TAMs was determined using approaches like Western blot, qRT-PCR, ELISA, and flow cytometry. The interaction between tumor cells and TAMs were assessed by indirect co-culture H1975, PC-9 cells with M2 type macrophages. The effects of MTE on anti-tumor and macrophage polarization were evaluated in vitro and in vivo. RESULTS RNA-seq results identified IL-4 as a critical response to HDGF in NSCLC. HDGF induced macrophages polarizing toward M2 type, and promoted NSCLC cells proliferation, migration and invasion in vitro. On the one hand, HDGF dose-dependently promoted IL-4 expression in NSCLC cells. On the other hand, HDGF induced M2 macrophage polarization through the IL-4/JAK1/STAT3 signaling pathway. MTE treatment significantly decreased the expression and secretion of HDGF in NSCLC cells. Meanwhile, MTE treatment led to M2 macrophage repolarization, as evidenced by decreased expression of M2 markers and increased levels of M1 markers. Importantly, MTE treatment significantly suppressed tumor development in C57BL/6 mice bearing Lewis lung cancer (LLC) cells in vivo, accompanied by decreased plasma HDGF levels, reduced M2 macrophages infiltration and increased M1 macrophages proportion in mice tumor tissues. CONCLUSIONS HDGF upregulated IL-4 expression in NSCLC cells, and promoted M2 polarization by the IL-4/JAK1/STAT3 signaling pathway in macrophages. MTE disturbed the interaction between NSCLC and TAMs in vitro, and inhibited tumor growth in vivo, at least in part, by suppressing HDGF. Therefore, our present study revealed a novel anti-tumor mechanism of MTE through inhibiting HDGF expression and enhancing macrophage polarization from M2 to M1 phenotype.
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Affiliation(s)
- Jia-Lei Fu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Integration of Chinese and Western Medicine, Peking University, Cancer Hospital and Institute, Beijing, 100142, PR China
| | - Hui-Feng Hao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Integration of Chinese and Western Medicine, Peking University, Cancer Hospital and Institute, Beijing, 100142, PR China
| | - Shan Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Integration of Chinese and Western Medicine, Peking University, Cancer Hospital and Institute, Beijing, 100142, PR China
| | - Yan-Na Jiao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Integration of Chinese and Western Medicine, Peking University, Cancer Hospital and Institute, Beijing, 100142, PR China
| | - Ping-Ping Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Integration of Chinese and Western Medicine, Peking University, Cancer Hospital and Institute, Beijing, 100142, PR China.
| | - Shu-Yan Han
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Integration of Chinese and Western Medicine, Peking University, Cancer Hospital and Institute, Beijing, 100142, PR China.
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Li Y, Dittmann NL, Watson AES, de Almeida MMA, Footz T, Voronova A. Hepatoma Derived Growth Factor Enhances Oligodendrocyte Genesis from Subventricular Zone Precursor Cells. ASN Neuro 2022; 14:17590914221086340. [PMID: 35293825 PMCID: PMC8943302 DOI: 10.1177/17590914221086340] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Oligodendrocytes, the myelinating cells of the central nervous system (CNS), perform vital functions in neural protection and communication, as well as cognition. Enhanced production of oligodendrocytes has been identified as a therapeutic approach for neurodegenerative and neurodevelopmental disorders. In the postnatal brain, oligodendrocytes are generated from the neural stem and precursor cells (NPCs) in the subventricular zone (SVZ) and parenchymal oligodendrocyte precursor cells (OPCs). Here, we demonstrate exogenous Hepatoma Derived Growth Factor (HDGF) enhances oligodendrocyte genesis from murine postnatal SVZ NPCs in vitro without affecting neurogenesis or astrogliogenesis. We further show that this is achieved by increasing proliferation of both NPCs and OPCs, as well as OPC differentiation into oligodendrocytes. In vivo results demonstrate that intracerebroventricular infusion of HDGF leads to increased oligodendrocyte genesis from SVZ NPCs, as well as OPC proliferation. Our results demonstrate a novel role for HDGF in regulating SVZ precursor cell proliferation and oligodendrocyte differentiation.
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Affiliation(s)
- Yutong Li
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2H7, Canada
| | - Nicole Leanne Dittmann
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2H7, Canada
- Neuroscience and Mental Health Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2E1, Canada
| | - Adrianne Eve Scovil Watson
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2H7, Canada
| | - Monique Marylin Alves de Almeida
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2H7, Canada
- Neuroscience and Mental Health Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2E1, Canada
| | - Tim Footz
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2H7, Canada
| | - Anastassia Voronova
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2H7, Canada
- Neuroscience and Mental Health Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2E1, Canada
- Women and Children’s Health Research Institute, 5-083 Edmonton Clinic Health Academy, University of Alberta, 11405 87 Avenue NW Edmonton, Alberta, Canada, T6G 1C9
- Department of Cell Biology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2H7, Canada
- Multiple Sclerosis Centre, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2H7, Canada
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Chen Z, Xie Y, Luo H, Song Y, Que T, Hu R, Huang H, Luo K, Li C, Qin C, Zheng C, Fang W, Liu L, Long H, Luo Q. NAP1L1 promotes proliferation and chemoresistance in glioma by inducing CCND1/CDK4/CDK6 expression through its interaction with HDGF and activation of c-Jun. Aging (Albany NY) 2021; 13:26180-26200. [PMID: 34959221 PMCID: PMC8751585 DOI: 10.18632/aging.203805] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 12/13/2021] [Indexed: 02/06/2023]
Abstract
The prognosis of glioma is poor as its pathogenesis and mechanisms underlying cisplatin chemoresistance remain unclear. Nucleosome assembly protein 1 like 1 (NAP1L1) is regarded as a hallmark of malignant tumors. However, the role of NAP1L1 in glioma remains unknown. In this study, we aimed to investigate the molecular functions of NAP1L1 in glioma and its involvement in cisplatin chemoresistance, if any. NAP1L1 was found to be upregulated in samples from The Cancer Genome Atlas (TCGA) database. Immunohistochemistry indicated that NAP1L1 and hepatoma-derived growth factor (HDGF) were enhanced in glioma as compared to the para-tumor tissues. High expressions of NAP1L1 and HDGF were positively correlated with the WHO grade, KPS, Ki-67 index, and recurrence. Moreover, NAP1L1 expression was also positively correlated with the HDGF expression in glioma tissues. Functional studies suggested that knocking down NAP1L1 could significantly inhibit glioma cell proliferation both in vitro and in vivo, as well as enhance the sensitivity of glioma cells to cisplatin (cDDP) in vitro. Mechanistically, NAP1L1 could interact with HDGF at the protein level and they co-localize in the cytoplasm. HDGF knockdown in NAP1L1-overexpressing glioma cells significantly inhibited cell proliferation. Furthermore, HDGF could interact with c-Jun, an oncogenic transcription factor, which eventually induced the expressions of cell cycle promoters, CCND1/CDK4/CDK6. This finding suggested that NAP1L1 could interact with HDGF, and the latter recruited c-Jun, a key oncogenic transcription factor, that further induced CCND1/CDK4/CDK6 expression, thereby promoting proliferation and chemoresistance in glioma cells. High expression of NAP1L1 in glioma tissues indicated shorter overall survival in glioma patients.
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Affiliation(s)
- Zigui Chen
- Neuroscience Center, Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China.,Southern Medical University, Guangzhou, Guangdong 510000, China
| | - Yingying Xie
- Neuroscience Center, Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China.,Southern Medical University, Guangzhou, Guangdong 510000, China
| | - Hongcheng Luo
- Department of Laboratory Medicine, Affiliated Hospital of Youjiang Medical University for Nationalities, Guangxi, Baise 53300, China
| | - Ye Song
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Tianshi Que
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Rentong Hu
- Department of Laboratory Medicine, Affiliated Hospital of Youjiang Medical University for Nationalities, Guangxi, Baise 53300, China
| | - Huatuo Huang
- Department of Laboratory Medicine, Affiliated Hospital of Youjiang Medical University for Nationalities, Guangxi, Baise 53300, China
| | - Kunxiang Luo
- Department of Neurosurgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Guangxi, Baise 53300, China
| | - Chuanyu Li
- Department of Neurosurgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Guangxi, Baise 53300, China
| | - Chengjian Qin
- Department of Neurosurgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Guangxi, Baise 53300, China
| | - Chuanhua Zheng
- Department of Neurosurgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Guangxi, Baise 53300, China
| | - Weiyi Fang
- Neuroscience Center, Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China.,Southern Medical University, Guangzhou, Guangdong 510000, China
| | - Longyang Liu
- Neuroscience Center, Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China.,Southern Medical University, Guangzhou, Guangdong 510000, China
| | - Hao Long
- Neuroscience Center, Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China.,Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Qisheng Luo
- Neuroscience Center, Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510315, China.,Department of Neurosurgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Guangxi, Baise 53300, China
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Xu W, Che DD, Liu Q, Pan YW, Lv SQ, Chen BD. The inhibitory effect of miR-345 on glioma progression is closely related to circRNA-hsa_circ_0073237 and HDGF. Cells Tissues Organs 2021; 210:368-379. [PMID: 34348265 DOI: 10.1159/000518667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 07/21/2021] [Indexed: 11/19/2022] Open
Affiliation(s)
- Wu Xu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
- Department of Neurosurgery, The Affiliated Hospital of Jiujiang University, Jiujiang, China
| | - Dan-Dan Che
- Department of Intensive Care Unit, The Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Qing Liu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Ya-Wen Pan
- Department of Neurosurgery, The Second Hospital of Lanzhou University, Lanzhou, China
| | - Sheng-Qing Lv
- Department of Neurosurgery, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Bao-Dong Chen
- Department of Neurosurgery, Shenzhen Hospital, Peking University, Shenzhen, China
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Wang X, Zhang Y, Li W, Liu X. Knockdown of cir_RNA PVT1 Elevates Gastric Cancer Cisplatin Sensitivity via Sponging miR-152-3p. J Surg Res 2021; 261:185-195. [PMID: 33444948 DOI: 10.1016/j.jss.2020.12.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 11/08/2020] [Accepted: 12/04/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Cisplatin (DDP) resistance is a key problem for effective treatment of gastric cancer (GC). Circular RNA PVT1 (circPVT1) acts as a vital regulator in the progression and development of various cancers. However, the in-depth mechanism of circPVT1 in GC resistance to DDP is still unclear. MATERIALS AND METHODS Quantitative real-time polymerase chain reaction was executed for the detection of the expression of circPVT1, miR-152-3p, and hepatoma-derived growth factor (HDGF) mRNA in GC tissues and cells. Western blot was used to detect the levels of HDGF protein, Bax, cleaved-casp-3, Bcl-2, p-PI3K, and p-AKT in tissue samples and/or cells. 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and flow cytometry assays were performed to determine the viability, proliferation, and apoptosis of DDP-resistant GC cells. The relationship between miR-152-3p and circPVT1 or HDGF was confirmed by dual-luciferase reporter assay. The biological role of circPVT1 in vivo was confirmed with a xenograft tumor model. RESULTS CircPVT1 and HDGF mRNA were upregulated while miR-152-3p was downregulated in chemoresistance tissues and DDP-resistant GC cells. Both circPVT1 and HDGF inhibition elevated cell sensitivity to DDP, suppressed cell viability, proliferation, and induced cell apoptosis in DDP-resistant GC cells. The MiR-152-3p inhibitor reversed the influence of circPVT1 silencing on DDP sensitivity, viability, proliferation, and apoptosis of DDP-resistant GC cells. Moreover, circPVT1 regulated the HDGF/PI3K/AKT pathway through sponging miR-152-3p. In addition, circPVT1 knockdown reduced the malignancy of DDP-resistant GC cells in vivo. CONCLUSIONS CircPVT1 regulated the chemoresistance and malignancy of GC through modulating HDGF expression via sponging miR-152-3p, providing a theoretical basis for the development of effective therapeutic strategies for GC.
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Affiliation(s)
- Xiaojie Wang
- Department of Oncology, Dongying People's Hospital, Dongying, Shandong Province, China
| | - Ying Zhang
- Department of Blood Transfusion, Dongying People's Hospital, Dongying, Shandong Province, China
| | - Wei Li
- Department of Clinical Laboratory, Dongying People's Hospital, Dongying, Shandong Province, China
| | - Xiaolei Liu
- Department of Clinical Laboratory, Dongying People's Hospital, Dongying, Shandong Province, China.
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Shi L, Sun G, Zhang Y. Demethoxycurcumin analogue DMC-BH exhibits potent anticancer effects on orthotopic glioblastomas. Aging (Albany NY) 2020; 12:23795-23807. [PMID: 33221748 PMCID: PMC7762498 DOI: 10.18632/aging.103981] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 07/30/2020] [Indexed: 12/23/2022]
Abstract
Demethoxycurcumin (DMC) has anti-glioma effects in vitro and in subcutaneous xenotransplanted tumors. Our previous study confirmed that the molecule also has mild anti-glioma effects on orthotopic glioblastomas in vivo. In this study, we found that DMC-BH, a DMC analogue, exhibited more potent in vitro and in vivo activities than did DMC. DMC-BH was cytotoxic against various glioma cells including SHG-44, C6, U251, U87, A172 and primary glioma cells. DMC-BH activity was characterized by low acute toxicity and an appropriate pharmacokinetic profile. We evaluated the anti-tumor effects of DMC-BH in an ectopic xenograft model, an orthotopic glioblastoma xenograft model and a patient-derived tumor xenograft (PDTX) model. DMC-BH exhibited potent anti-tumor activity in both the ectopic xenograft and PDTX models. Indeed, bioluminescence measurements showed that DMC-BH exerted a significantly greater anti-tumor effect on orthotopic glioma growth than DMC. Immunohistochemical analysis revealed that DMC-BH inhibited expression of Ki67 and increased the incidence of TUNEL-positive cells. Western blotting showed that DMC-BH significantly decreased p-Akt and p-mTOR expression in orthotopic glioma tissues. These results suggest that the DMC analogue DMC-BH has potent anti-tumor properties that warrant further study.
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Affiliation(s)
- Lei Shi
- Department of Neurosurgery, Affiliated Kunshan Hospital of Jiangsu University, Suzhou 215300, P.R. China
| | - Guan Sun
- Department of Neurosurgery, The Fourth Affiliated Hospital of Nantong University, Yancheng City First People's Hospital, Yancheng 224000, P. R. China
| | - Yong Zhang
- Department of Neurosurgery, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing 210029, P.R. China
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da Silva AB, Cerqueira Coelho PL, das Neves Oliveira M, Oliveira JL, Oliveira Amparo JA, da Silva KC, Soares JRP, Pitanga BPS, Dos Santos Souza C, de Faria Lopes GP, da Silva VDA, de Fátima Dias Costa M, Junier MP, Chneiweiss H, Moura-Neto V, Costa SL. The flavonoid rutin and its aglycone quercetin modulate the microglia inflammatory profile improving antiglioma activity. Brain Behav Immun 2020; 85:170-185. [PMID: 31059805 DOI: 10.1016/j.bbi.2019.05.003] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 05/01/2019] [Accepted: 05/02/2019] [Indexed: 12/16/2022] Open
Abstract
Microglia cells are the immune effector in the Central Nervous System (CNS). However, studies have showed that they contribute more to glioma progression than to its elimination. Rutin and its aglycone quercetin are flavonoids present in many fruits as well as plants and have been demonstrated to bear anti-inflammatory, antioxidant and antitumor properties also to human glioblastoma cell lines. Previous studies also demonstrated that rutin, isolated from the Brazilian plant Dimorphandra mollis Bent., presents immunomodulatory effect on astrocytes and microglia. In this study, we investigate the antitumor and immunomodulatory properties of rutin and its aglycone quercetin on the viability of glioma cells alone and under direct and indirect interaction with microglia. Flavonoid treatment of rat C6 glioma cells induced inhibition of proliferation and migration, and also induced microglia chemotaxis that was associated to the up regulation of tumor necrosis factor (TNF) and the down regulation of Interleukin 10 (IL-10) at protein and mRNA expression levels, regulation of mRNA expression for chemokines CCL2, CCL5 and CX3CL1, and Heparin Binding Growth Factor (HDGF), Insulin-like growth factor (IGF) and Glial cell-derived neurotrophic factor (GDNF) growth factors. Treatment of human U251 and TG1 glioblastoma cells with both flavonoids also modulated negatively the expression of mRNA for IL-6 and IL-10 and positively the expression of mRNA for TNF characterizing changes to the immune regulatory profile. Treatment of microglia and C6 cells either in co-cultures or during indirect interaction, via conditioned media from glioma cells treated with flavonoids or via conditioned media from microglia treated with flavonoids reduced proliferation and migration of glioma cells. It also directed microglia towards an inflammatory profile with increased expression of mRNA for IL-1β, IL-6, IL-18 and decreased expression of mRNA for nitric oxide synthase 2 (NOS2) and prostaglandin-endoperoxide synthase 2 (PTGS2), arginase and transforming growth factor beta (TGF-β), as well as Insulin-like growth factor (IGF). Treatment of U251 cells with flavonoids also reduced tumorigenesis when the cells were xenotransplanted in rat brains, and directed microglia and also astrocytes in the microenvironment of tumor cell implantation as well as in the brain parenchyma to a not favorable molecular inflammatory profile to the glioma growth, as observed in cultures. Together these results demonstrate that the flavonoid rutin and its aglycone quercetin present antiglioma effects related to the property of modulating the microglial inflammatory profile and may be considered for molecular and preclinical studies as adjuvant molecules for treatment of gliomas.
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Affiliation(s)
- Alessandra Bispo da Silva
- Laboratory of Neurochemistry and Cell Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, 40110-100 Salvador, Bahia, Brazil
| | - Paulo Lucas Cerqueira Coelho
- Laboratory of Neurochemistry and Cell Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, 40110-100 Salvador, Bahia, Brazil
| | - Mona das Neves Oliveira
- Laboratory of Neurochemistry and Cell Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, 40110-100 Salvador, Bahia, Brazil
| | - Joana Luz Oliveira
- Laboratory of Neurochemistry and Cell Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, 40110-100 Salvador, Bahia, Brazil
| | - Jéssika Alves Oliveira Amparo
- Laboratory of Neurochemistry and Cell Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, 40110-100 Salvador, Bahia, Brazil
| | - Karina Costa da Silva
- Laboratory of Neurochemistry and Cell Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, 40110-100 Salvador, Bahia, Brazil
| | - Janaina Ribeiro Pereira Soares
- Laboratory of Neurochemistry and Cell Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, 40110-100 Salvador, Bahia, Brazil
| | - Bruno Penas Seara Pitanga
- Laboratory of Neurochemistry and Cell Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, 40110-100 Salvador, Bahia, Brazil
| | - Cleide Dos Santos Souza
- Laboratory of Neurochemistry and Cell Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, 40110-100 Salvador, Bahia, Brazil
| | - Giselle Pinto de Faria Lopes
- Laboratory of Neurochemistry and Cell Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, 40110-100 Salvador, Bahia, Brazil; Department of Marine Biotechnology, Institute of Studies of the Sea Studies Institute Admiral Paulo Moreira (IEAPM), 28930-000 Arraial do Cabo, Rio de Janeiro and Brazilian National Cancer Institute (INCA), Rio de Janeiro, Brazil
| | - Victor Diogenes Amaral da Silva
- Laboratory of Neurochemistry and Cell Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, 40110-100 Salvador, Bahia, Brazil
| | - Maria de Fátima Dias Costa
- Laboratory of Neurochemistry and Cell Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, 40110-100 Salvador, Bahia, Brazil; INCT/CNPq-Neurociência Translacional (INNT), ICB/UFRJ, Av. Carlos Chagas Filho 373, CEP 21941-902 Rio de Janeiro, Brazil
| | - Marie Pierre Junier
- INSERM, UMR-S 1130, Neuroscience Paris Seine-IBPS, Campus Pierre et Marie Curie, 75005 Paris, France
| | - Hervé Chneiweiss
- INSERM, UMR-S 1130, Neuroscience Paris Seine-IBPS, Campus Pierre et Marie Curie, 75005 Paris, France
| | - Vivaldo Moura-Neto
- State Institute of the Brain Paulo Niemeyer, 20230-024 Rio de Janeiro, Rio de Janeiro, Brazil; INCT/CNPq-Neurociência Translacional (INNT), ICB/UFRJ, Av. Carlos Chagas Filho 373, CEP 21941-902 Rio de Janeiro, Brazil
| | - Silvia Lima Costa
- Laboratory of Neurochemistry and Cell Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, 40110-100 Salvador, Bahia, Brazil; INCT/CNPq-Neurociência Translacional (INNT), ICB/UFRJ, Av. Carlos Chagas Filho 373, CEP 21941-902 Rio de Janeiro, Brazil.
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Xu Y, Wang H, Gao W. MiRNA-610 acts as a tumour suppressor to depress the cisplatin resistance in hepatocellular carcinoma through targeted silencing of hepatoma-derived growth factor. Arch Med Sci 2020; 16:1394-1401. [PMID: 33224339 PMCID: PMC7667417 DOI: 10.5114/aoms.2019.87938] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 10/22/2017] [Indexed: 12/29/2022] Open
Abstract
INTRODUCTION Hepatic malignancy is one of the most common malignant neoplasms around the globe, and hepatocellular carcinoma (HCC) is the most common type. In this study, the roles and mechanisms of MiRNA-610 in the chemo resistance of HCC will be discussed. MATERIAL AND METHODS The expression of MiRNA-610 and hepatoma-derived growth factor (HDGF) in HCC tissues and cell line was detected by quantitative real-time PCR. The proliferation and chemo resistance were analysed by MTT assay. Flow cytometry was used to examine the apoptosis rate. Luciferase reporter assay was used to verify the correlation between MiRNA-610 and HDGF. HDGF protein expression was detected by Western blot. RESULTS Our study confirmed the low-expression of MiRNA-610 in HCC tissues and cell line. Its low expression was related to high T stages and poor differentiation of HCC, and was a prognostic factor for HCC. MiRNA-610 upregulation inhibited cell proliferation and induced apoptosis of HepG2 cells. MiRNA-610 enhancement decreased the half maximal inhibitory concentration for cisplatin (DDP) and depressed the DDP resistance in HepG2 cells. The specific correlation between MiRNA-610 and HDGF was tested by luciferase reporter assay and western blot. The transfection with HDGF expression vector up-regulated the expression of HDGF protein silenced by MiRNA-610 enhancement. HDGF overexpression was found to reverse partly the regulatory roles of MiRNA-610 on malignancy and DDP resistance. CONCLUSIONS MiRNA-610 not only played a tumour suppressor role in HCC but also affected chemo resistance to DDP. This role is mainly mediated through targeted silencing of the HDGF gene, which may offer a new potential therapeutic target and improve the clinical therapeutic effect for HCC.
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Affiliation(s)
- Yongqing Xu
- Department of The Twelfth General Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Helin Wang
- Department of The Twelfth General Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Weike Gao
- Department of The Twelfth General Surgery, Shengjing Hospital of China Medical University, Shenyang, China
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Ni Q, Fan Y, Zhang X, Fan H, Li Y. In vitro and in vivo Study on Glioma Treatment Enhancement by Combining Temozolomide with Calycosin and Formononetin. JOURNAL OF ETHNOPHARMACOLOGY 2019; 242:111699. [PMID: 31005632 DOI: 10.1016/j.jep.2019.01.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 01/17/2019] [Accepted: 01/20/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Astragalina alpestris is a traditional Chinese herbal medicine with anti-inflammatory, anti-immune, anti-tumor and other pharmacological effects. Calycosin and formononetin (FMN) are two natural compounds isolated from astragalus. It has been shown that calycosin and FMN are active anti-tumor ingredient. AIM OF THE STUDY The aim of this current work was to study the therapeutic enhancement of temozolomide (TMZ) on gliomavia combining with calycosin and FMN. MATERIALS AND METHODS The effect of co-administration via hematoxylin-eosin staining (HE staining) was determined by measuring cell proliferation toxicity with the 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide, Thiazolyl Blue Tetrazolium Bromide (MTT) assay and sequentially observing the cell morphology. To synchronously explore the effect of migration on C6, transwell assay and wound healing assay were performed. Apoptosis was measured by Annexin V/propidium iodide (PI) staining. Meanwhile, western blot was used to investigate proteins involved in the mechanisms for migration and apoptosis. Furthermore, HE staining and immunohistochemistry were also analyzed for curative effect in vivo. RESULTS The efficacy of TMZ on glioma could be enhanced by combining with calycosin and FMN through inhibiting the proliferation and migration of glioma cells and promoting their apoptosis. Western blot assays indicated that expression of apoptotic proteins (Bcl-2 Associated XProtein (Bax), Cleaved Caspase-3, Cleaved Caspase-9) were up-regulated. Anti-apoptotic protein (B-cell lymphoma-2,Bcl-2) was down-regulated. The migratory proteins (Matrix metallopeptidase 2, 9, MMP-2, MMP-9) was downregulated. In vivo study, this kind of co-administration (calycosin, FMN, and TMZ) exhibited the marked therapeutic effect on glioma. CONCLUSIONS This study has identified that calycosin and FMN can increase the treatment effect of TMZ in vitro and in vivo. These attractive features substantially broadened the application range of TMZ as a glioma treatment medicine.
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Affiliation(s)
- Qi Ni
- Department of Clinical Pharmacology Lab, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu 210006, China
| | - Yani Fan
- Department of Clinical Pharmacology Lab, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu 210006, China
| | - Xiong Zhang
- Department of Clinical Pharmacology Lab, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu 210006, China
| | - Hongwei Fan
- Department of Clinical Pharmacology Lab, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu 210006, China.
| | - Yingbin Li
- Department of Neurosurgery, the Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210011, China.
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11
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Zhou M, Jiang N, Fan J, Fu S, Luo H, Su P, Zhang M, Shi H, Zeng J, Huang Y, Li Y, Shen H, Zhang A, Li R. H 7K(R 2) 2-modified pH-sensitive self-assembled nanoparticles delivering small interfering RNA targeting hepatoma-derived growth factor for malignant glioma treatment. J Control Release 2019; 310:24-35. [PMID: 31404556 DOI: 10.1016/j.jconrel.2019.08.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 08/03/2019] [Accepted: 08/08/2019] [Indexed: 12/12/2022]
Abstract
The lack of effective glioma therapeutics mandates the development of novel treatment strategies. Hepatoma-derived growth factor (HDGF) has been considered as a potential glioma therapeutic target, and its expression level in gliomas is positively related to the malignant grade. Although there are no effective and specific inhibitors against this target, small interfering RNA targeting HDGF (siHDGF)-mediated RNA interference (RNAi) can inhibit the target protein function by knockdown of HDGF expression. However, the application of siHDGF in glioma research and therapy is hampered by the challenge to safe and effective in vivo systemic delivery of siHDGF to gliomas. To address this question, we develop the peptide H7K(R2)2-modified pH-sensitive self-assembled hybrid nanoparticles encapsulating siHDGF (H7K(R2)2-PSNPs (siHDGF)). The acidic glioma microenvironment is beneficial to the membrane penetration of H7K(R2)2-PSNPs and the encapsulated siHDGF. Following systemic administration, H7K(R2)2-PSNPs (siHDGF) can effectively deliver siHDGF into the brain and malignant glioma cells, and therefore can significantly downregulate HDGF expression, inhibit malignant phenotypes of glioma cells, result in reduced tumor volumes and prolonged survival times in nude mice bearing U251 human glioblastoma. Thus, systemic administration of H7K(R2)2-PSNPs (siHDGF) offers an effective way for the targeted delivery of siHDGF and may serve as a practical malignant glioma therapy.
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Affiliation(s)
- Meiling Zhou
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Nan Jiang
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Junting Fan
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Song Fu
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Honghua Luo
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Ping Su
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Mingwan Zhang
- Department of Pharmacy, Tongde Hospital of Zhejiang Province, Hangzhou 310012, China
| | - Huihui Shi
- Kangda College of Nanjing Medical university, Lianyungang 222000, China
| | - Jiaqi Zeng
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Yuan Huang
- Department of Pharmacy, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi 214023, China
| | - Yang Li
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Hong Shen
- Neuro-psychiatric Institute, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Aixia Zhang
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China.
| | - Rui Li
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China.
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Liu C, Wang L, Jiang Q, Zhang J, Zhu L, Lin L, Jiang H, Lin D, Xiao Y, Fang W, Guo S. Hepatoma-Derived Growth Factor and DDX5 Promote Carcinogenesis and Progression of Endometrial Cancer by Activating β-Catenin. Front Oncol 2019; 9:211. [PMID: 31032220 PMCID: PMC6470266 DOI: 10.3389/fonc.2019.00211] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 03/11/2019] [Indexed: 12/13/2022] Open
Abstract
Background: Our previous work determined the correlation between high nuclear expression of hepatoma-derived growth factor (HDGF) and clinicopathological data of endometrial cancer (EC); however, the modulatory mechanisms and biological role of HDGF in EC have not been reported. Methods: Lentiviral particles carrying human HDGF short hairpin RNA (shHDGF-1, -2, and -3) vector and plasmids for HDGF, DDX5, and β-catenin expression were, respectively introduced into EC cells to evaluate the effects and molecular mechanisms underlying EC cell proliferation, migration, invasion, and metastasis. Quantitative real time reverse transcription polymerase chain reaction (qRT-PCR) and western blotting were used to determine HDGF and DDX5 expression. Co-immunoprecipitation (co-IP), mass spectrometry, and an immunofluorescence co-localization study were conducted to explore the relationship between HDGF, DDX5, and β-catenin. Immunohistochemistry was used to analyze the clinical associations between HDGF and DDX5 in EC. Results: Knocking down HDGF expression significantly decreased EC cellular proliferation, migration, invasion in vitro, as well as tumorigenesis and metastasis in vivo. Conversely, HDGF overexpression reversed these effects. Stable knockdown-based HDGF suppression activated the PI3K/AKT signaling pathway, along with downstream β-catenin-mediated cell cycle and epithelial-mesenchymal transition signaling. Furthermore, co-IP combined with mass spectrometry and an immunofluorescence co-localization study indicated that HDGF interacts with DDX5, whereas β-catenin was associated with DDX5 but not HDGF. Overexpression of DDX5 reversed the suppression of shHDGF. Immunohistochemistry analysis showed that high expression of DDX5 constituted an unfavorable factor with respect to the clinicopathological characteristics of EC tissues and that HDGF and DDX5 high expression (HDGF+/DDX5+) led to a worse prognosis for patients with EC (P < 0.001). In addition, we found that the expression of HDGF and DDX5 was positively correlated in EC tissues (r = 0.475, P < 0.001). Conclusion: Our results provide novel evidence that HDGF interacts with DDX5 and promotes the progression of EC through the induction of β-catenin.
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Affiliation(s)
- Chunhua Liu
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
| | - Lijing Wang
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
| | - Qingping Jiang
- Department of Pathology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Junyi Zhang
- Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Litong Zhu
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
| | - Li Lin
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
| | - Huiping Jiang
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
| | - Dan Lin
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
| | - Yanyi Xiao
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
| | - Weiyi Fang
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.,Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Suiqun Guo
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China
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Xu X, Bao Z, Liu Y, Jiang K, Zhi T, Wang D, Fan L, Liu N, Ji J. PBX3/MEK/ERK1/2/LIN28/let-7b positive feedback loop enhances mesenchymal phenotype to promote glioblastoma migration and invasion. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:158. [PMID: 30016974 PMCID: PMC6050701 DOI: 10.1186/s13046-018-0841-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 05/02/2018] [Indexed: 01/19/2023]
Abstract
BACKGROUND Brain invasion by glioblastoma (GBM) determines recurrence and prognosis in patients, which is, in part, attributed to increased mesenchymal transition. Here, we report evidence favoring such a role for the Pre-B-cell leukemia homebox (PBX) family member PBX3. METHODS Western blot, immunohistochemistry, qRT-PCR and datasets mining were used to determined proteins or genes expression levels. Wound-healing and transwell assays were used to examine the invasive abilities of GBM cells. Dual-luciferase reporter assays were used to determine how let-7b regulates PBX3. Chromatin-immunoprecipitation (ChIP) and rescue experiments were performed to investigate the involved molecular mechanisms. Orthotopic mouse models were used to assess the role of PBX3 in vivo. RESULTS We found that PBX3 expression levels positively correlated with glioma mesenchymal markers. Ectopic expression of PBX3 promoted invasive phenotypes and triggered the expression of mesenchymal markers, whereas depletion of PBX3 reduced GBM cell invasive abilities and decreased the expression of mesenchymal markers. In addition, inhibition of PBX3 attenuated transforming growth factor-β (TGFβ)-induced GBM mesenchymal transition. Mechanistic studies revealed that PBX3 mediated GBM mesenchymal transition through activation of MEK/ERK1/2, leading to increased expression of LIN28 by c-myc. Increased LIN28 inhibited let-7b biogenesis, which then promoted the pro-invasive genes, such as HMGA2 and IL-6. Furthermore, let-7b suppressed PBX3 by directly targeting 3'-UTR of PBX3. Thus, repressed let-7b by PBX3 amplifies PBX3 signaling and forms a positive feedback loop to promote GBM mesenchymal transition. CONCLUSIONS These data highlight the importance of PBX3 as a key driver of mesenchymal transition and potential therapeutic target.
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Affiliation(s)
- Xiupeng Xu
- Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, Jiangsu, China
| | - Zhongyuan Bao
- Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, Jiangsu, China
| | - Yinlong Liu
- Department of Neurosurgery, Suzhou Municipal Hospital, Suzhou, Jiangsu, China
| | - Kuan Jiang
- Department of Neurosurgery, Yixing People's Hospital, Yixing, Jiangsu, China
| | - Tongle Zhi
- Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, Jiangsu, China
| | - Dong Wang
- Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, Jiangsu, China
| | - Liang Fan
- Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, Jiangsu, China
| | - Ning Liu
- Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, Jiangsu, China
| | - Jing Ji
- Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University, Guangzhou Road 300, Nanjing, Jiangsu, China.
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14
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Zeng Y, Wang X, Wang J, Yi R, Long H, Zhou M, Luo Q, Zhai Z, Song Y, Qi S. The Tumorgenicity of Glioblastoma Cell Line U87MG Decreased During Serial In Vitro Passage. Cell Mol Neurobiol 2018; 38:1245-1252. [PMID: 29948550 DOI: 10.1007/s10571-018-0592-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 05/17/2018] [Indexed: 02/08/2023]
Abstract
Established cancer cell lines are routinely used to study cancer. Several factors such as serial passage may affect the reproducibility of experiments with cancer cell lines, but few researches focused on these changes. In the present study, different morphology and decreased tumorigenicity were observed in late passage U87MG cells. In vitro experiments further revealed that late passage U87MG cells possessed lower invasion properties than early passage, whereas no significant differences of proliferation and migration were found between early and late passage U87MG cells. In particular, we confirmed that late passage U87MG cells exhibited more epithelial phenotype with decreased PI3K/Akt pathway and TGF-β pathway expressions at protein level. In summary, our results focused on the changes of U87MG cells during serial in vitro passage, suggested that passage-induced changes may lead to notable changes of biological characteristics and several molecular transitions in cancer cell lines, indicating the necessity to shorten experiment-span and accomplish experiments with the same or similar passage cancer cell strains.
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Affiliation(s)
- Yu Zeng
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China
| | - Xizhao Wang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China
| | - Jizhou Wang
- Department of Neurosurgery, The Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, 519000, Guangdong, People's Republic of China
| | - Renhui Yi
- Gannan Medical University, Ganzhou, 341000, Jiangxi, People's Republic of China.,Department of Neurosurgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, Jiangxi, People's Republic of China
| | - Hao Long
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China
| | - Mingfeng Zhou
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China
| | - Qisheng Luo
- Department of Neurosurgery, Affiliated Hospital of Youjiang Medical College for Nationalities, Baise, 533000, Guangxi, People's Republic of China
| | - Zhihao Zhai
- Department of Neurosurgery, The Eighth Affiliated Hospital, Sun Yat-Sen University, Futian, Shenzhen, 518000, People's Republic of China
| | - Ye Song
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China.
| | - Songtao Qi
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, People's Republic of China.
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15
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Yang Y, Liang S, Li Y, Gao F, Zheng L, Tian S, Yang P, Li L. Hepatoma-derived growth factor functions as an unfavorable prognostic marker of human gliomas. Oncol Lett 2018; 14:7179-7184. [PMID: 29344149 PMCID: PMC5754909 DOI: 10.3892/ol.2017.7180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 09/05/2017] [Indexed: 01/28/2023] Open
Abstract
Hepatoma-derived growth factor (HDGF) regulates various cellular processes involved in the onset and development of tumors. To evaluate the role of HDGF in human gliomas, western blotting analysis, immunohistochemistry staining and reverse transcription-quantitative polymerase chain reaction were performed to detect HDGF protein and mRNA expression levels in glioma and intractable epileptic brain tissue. Various clinicopathological characteristics, including age, gender, World health Organization grade, HDGF expression level, Karnofsky performance Status (KPS) and Ki-67 index were obtained from medical records. The correlation between HDGF expression and these clinicopathological characteristics was statistically evaluated. Following this, multivariate liner regression was used to evaluate their effect on patient survival time. HDGF expression, at the protein and mRNA levels, was observed to be more upregulated in glioma tissues compared with intractable epileptic brain tissue without tumor. Furthermore, the level of HDGF expression was positively associated with the grade of malignancy [grades II~IV, Ki-67 index ≥20% or KPS <80 (P<0.05)] and poor prognosis in glioma patients. Notably, the univariate survival analysis identified a negative correlation between HDGF-expression and survival time (P<0.01) and multivariate liner regression demonstrated that HDGF expression is an independent prognostic factor for gliomas (P=0.01). Overall, HDGF upregulation may be a crucial step in the development and invasion of glioma. Further survival analysis highlighted its prognostic value for this malignancy, implying its potential as a promising therapeutic target for gliomas.
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Affiliation(s)
- Yang Yang
- Department of Neurosurgery, The 451st Hospital of Chinese People's Liberation Army, Xi'an, Shaanxi 710054, P.R. China
| | - Shengru Liang
- Department of Gynaecology and Obstetrics, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China
| | - Yuqian Li
- Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China
| | - Fei Gao
- Department of Neurosurgery, The 3rd Hospital of Chinese People's Liberation, Army, Baoji, Shaanxi 721000, P.R. China
| | - Longlong Zheng
- Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China
| | - Shilai Tian
- Department of Neurosurgery, Donggang Branch of The First Hospital of Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Pu Yang
- Department of Neurosurgery, The 451st Hospital of Chinese People's Liberation Army, Xi'an, Shaanxi 710054, P.R. China
| | - Lihong Li
- Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China
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Zhang WF, Yang Y, Li X, Xu DY, Yan YL, Gao Q, Jia AL, Duan MH. Angelica polysaccharides inhibit the growth and promote the apoptosis of U251 glioma cells in vitro and in vivo. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2017; 33:21-27. [PMID: 28887916 DOI: 10.1016/j.phymed.2017.06.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 05/23/2017] [Accepted: 06/11/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Angelica sinensis (Oliv) Diels (Apiaceae) is a traditional medicine that has been used for more than 2000 years in China. It exhibits various therapeutic effects including neuroprotective, anti-oxidant, anti-inflammatory, and immunomodulatory activities. Angelica polysaccharides (APs), bioactive constituents of Angelica have been shown to be responsible for these effects; however, the utility of APs for the treatment of glioma and their mechanism of action remain to be elucidated. PURPOSE In this study, we investigated the inhibitory effects of APs on a glioma cell line and their molecular mechanism of action. STUDY DESIGN U251 cells were utilized to confirm the effects of APs on glioma. METHODS The human glioblastoma cell line U251 was utilized for both in vitro and in vivo models, in which we tested the effects of APs. Flow cytometry, gene expression analysis, western blotting, and MTT assays were used to elucidate the effects of APs on cell proliferation, cell cycle, and apoptosis. RESULTS The results demonstrated that APs significantly inhibited the growth and proliferation of U251 cells and induced their apoptosis. Furthermore, APs effectively reduced the expression of several cell cycle regulators: cyclins D1, B, and E. The apoptosis suppressor protein Bcl-2 was also downregulated, and the expression of pro-apoptotic proteins Bax and cleaved-caspase-3 increased. Additionally, APs inhibited the transforming growth factor (TGF)-β signaling pathway and stimulated the expression of E-cadherin, thus prohibiting cell growth. CONCLUSION In conclusion, the results indicate that APs attenuate the tumorigenicity of glioma cells and promote their apoptosis by suppressing the TGF-β signaling pathway. The present study therefore provides evidence of the inhibitory effects of APs against glioma progression, and proposes their potential application as alternative therapeutic agents for glioma.
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Key Words
- AS, angelica sinensis (oliv.) diels
- Abbreviations: MTT, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
- Angelica polysaccharides
- Apoptosis
- Aps, angelica polysaccharides
- Cell cycle
- Cell proliferation
- Cis, cisplatin
- EMT, esenchymal transition
- Glioma
- PBS, phosphate-buffered saline
- TGF, transforming growth factor
- TUNEL, terminal deoxynucleotidyl transferase dUTP nick-end labeling
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Affiliation(s)
- Wen-Feng Zhang
- Changchun University of Chinese Medicine, Changchun 130117, Jilin, China
| | - Yan Yang
- Changchun University of Chinese Medicine, Changchun 130117, Jilin, China
| | - Xin Li
- Changchun University of Chinese Medicine, Changchun 130117, Jilin, China
| | - Da-Yan Xu
- Changchun University of Chinese Medicine, Changchun 130117, Jilin, China
| | - Yu-Li Yan
- Changchun University of Chinese Medicine, Changchun 130117, Jilin, China
| | - Qiao Gao
- Changchun University of Chinese Medicine, Changchun 130117, Jilin, China
| | - Ai-Ling Jia
- Changchun University of Chinese Medicine, Changchun 130117, Jilin, China
| | - Ming-Hua Duan
- Changchun University of Chinese Medicine, Changchun 130117, Jilin, China.
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Nüße J, Blumrich EM, Mirastschijski U, Kappelmann L, Kelm S, Dietz F. Intra- or extra-exosomal secretion of HDGF isoforms: the extraordinary function of the HDGF-A N-terminal peptide. Biol Chem 2017; 398:793-811. [DOI: 10.1515/hsz-2016-0315] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 12/05/2016] [Indexed: 12/25/2022]
Abstract
Abstract
Hepatoma-derived growth factor (HDGF) is a protein with diverse intracellular functions. Moreover, after non-conventional secretion, extracellular HDGF is able to influence different signaling pathways, leading for example to induction of processes like epithelial-mesenchymal transition (EMT) and cell migration. Intriguingly, in recent proteome studies, HDGF was also found secreted by special microvesicles called exosomes. Recently, we demonstrated the existence of two new HDGF isoforms (B and C). These isoforms are involved in different cellular processes than HDGF-A. Along this line, in the present study we discovered that full length HDGF-A clearly is located inside of exosomes, whereas the isoforms HDGF-B and HDGF-C are found exclusively on the outer surface. Furthermore, while HDGF-B and HDGF-C seem to use exosomes mediated pathway exclusively, HDGF-A was found also as unbound protein in the conditioned media. The new finding of an intra- or extra-exosomal localisation of protein splice variants opens a fascinating new perspective concerning functional diversity of HDGF isoforms. Dysregulation of HDGF expression during cancer development and tumor progression is a commonly known fact. With our new findings, unraveling the potential functional impact according to physiological versus pathophysiologically altered levels and compositions of intra- and extra-exosomal HDGF has to be addressed in future studies.
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Lian J, Tang J, Shi H, Li H, Zhen T, Xie W, Zhang F, Yang Y, Han A. Positive feedback loop of hepatoma-derived growth factor and β-catenin promotes carcinogenesis of colorectal cancer. Oncotarget 2016; 6:29357-74. [PMID: 26296979 PMCID: PMC4745732 DOI: 10.18632/oncotarget.4982] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Accepted: 07/17/2015] [Indexed: 01/24/2023] Open
Abstract
To clarify the role of hepatoma-derived growth factor (HDGF) and β-catenin in carcinogenesis of colorectal cancer (CRC), our results showed that high HDGF expression was found in CRC cells and tissues and significantly related to histological differentiation (p = 0.035) and lymph node metastasis (p = 0.000). Significant positive correlation between HDGF expression and β-catenin abnormal expression was found in CRC tissues. High HDGF and lymph node metastasis were the strong independent prognostic indicators for reduced overall survival in CRC patients. HDGF knockdown dramatically inhibited cellular proliferation, migration, invasion, and tumorigenesis, both in vitro and in vivo, but induced G1 phase arrest and apoptosis in CRC cells. HDGF knock-down dramatically suppressed β-catenin and its down-stream genes expression in CRC cells. Intriguingly, β-catenin knock-down dramatically suppressed HDGF expression in CRC cells. Human recombinant Wnt3a and DKK1 treatment increased and decreased HDGF, β-catenin, c-Myc, cyclin D1, MMP9, and phos-GSK-3β (Ser9) protein expression in nuclear and cytoplasmic fraction of CRC cells upon β-catenin knock-down, respectively. Three HDGF-binding elements in β-catenin promoter were found and specific for transcriptional activation of β-catenin in CRC cells. In conclusion, our results first suggest that HDGF and β-catenin interacts as a positive feedback loop, which plays an important role in carcinogenesis and progression of CRC.
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Affiliation(s)
- Jiayan Lian
- Department of Pathology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jianming Tang
- Department of Pathology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Huijuan Shi
- Department of Pathology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Hui Li
- Department of Pathology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Tiantian Zhen
- Department of Pathology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Wenlin Xie
- Department of Pathology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Fenfen Zhang
- Department of Pathology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yang Yang
- Department of Pathology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Anjia Han
- Department of Pathology, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
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Bao CH, Liu K, Wang XT, Ma W, Wang JB, Wang C, Jia YB, Wang NN, Tan BX, Song QX, Cheng YF. Prognostic role of hepatoma-derived growth factor in solid tumors of Eastern Asia: a systematic review and meta- analysis. Asian Pac J Cancer Prev 2016; 16:1803-11. [PMID: 25773828 DOI: 10.7314/apjcp.2015.16.5.1803] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Hepatoma-derived growth factor (HDGF) is a novel jack-of-all-trades in cancer. Here we quantify the prognostic impact of this biomarker and assess how consistent is its expression in solid tumors. A comprehensive search strategy was used to search relevant literature updated on October 3, 2014 in PubMed, EMBASE and WEB of Science. Correlations between HDGF expression and clinicopathological features or cancer prognosis was analyzed. All pooled HRs or ORs were derived from random-effects models. Twenty-six studies, primarily in Eastern Asia, covering 2,803 patients were included in the analysis, all of them published during the past decade. We found that HDGF overexpression was significantly associated with overall survival (OS) (HROS=2.35, 95%CI=2.04-2.71, p<0.001) and disease free survival (DFS) (HRDFS=2.25, 95%CI =1.81-2.79, p<0.001) in solid tumors, especially in non-small cell lung cancer, hepatocellular carcinoma and cholangiocarcinoma (CCA). Moreover, multivariate survival analysis showed that HDGF overexpression was an independent predictor of poor prognosis (HROS=2.41, 95%CI: 2.02-2.81, p<0.001; HRDFS=2.39, 95%CI: 1.77-3.24, p<0.001). In addition, HDGF overexpression was significantly associated with tumor category (T3-4 versus T1-2, OR=2.12, 95%CI: 1.17-3.83, p=0.013) and lymph node status (N+ versus N-, OR=2.37, 95%CI: 1.31-4.29, p=0.03) in CCA. This study provides a comprehensive examination of the literature available on the association of HDGF overexpression with OS, DFS and some clinicopathological features in solid tumors. Meta-analysis results provide evidence that HDGF may be a new indicator of poor cancer prognosis. Considering the limitations of the eligible studies, other large-scale prospective trials must be conducted to clarify the prognostic value of HDGF in predicting cancer survival.
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Affiliation(s)
- Ci-Hang Bao
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Shandong University, Jinan, China E-mail :
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Tang J, Shi H, Li H, Zhen T, Dong Y, Zhang F, Yang Y, Han A. The interaction of hepatoma-derived growth factor and β-catenin promotes tumorigenesis of synovial sarcoma. Tumour Biol 2016; 37:10287-301. [DOI: 10.1007/s13277-016-4905-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 01/22/2016] [Indexed: 01/14/2023] Open
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Wang G, Wang J, Zhao H, Wang J, Tony To SS. The role of Myc and let-7a in glioblastoma, glucose metabolism and response to therapy. Arch Biochem Biophys 2015; 580:84-92. [PMID: 26151775 DOI: 10.1016/j.abb.2015.07.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 07/02/2015] [Accepted: 07/03/2015] [Indexed: 02/06/2023]
Abstract
Glioblastoma multiforme (GBM) is thought to result from an imbalance between glucose metabolism and tumor growth. The Myc oncogene and lethal-7a microRNA (let-7a miRNA) have been suggested to cooperatively regulate multiple downstream targets leading to changes in chromosome stability, gene mutations, and/or modulation of tumor growth. Here, we review the roles of Myc and let-7a in glucose metabolism and tumor growth and addresses their future potential as prognostic markers and therapeutic tools in GBM. We focus on the functions of Myc and let-7a in glucose uptake, tumor survival, proliferation, and mobility of glioma cells. In addition, we discuss how regulation of different pathways by Myc or let-7a may be useful for future GBM therapies. A large body of evidence suggests that targeting Myc and let-7a may provide a selective mechanism for the deregulation of glucose metabolic pathways in glioma cells. Indeed, Myc and let-7a are aberrantly expressed in GBM and have been linked to the regulation of cell growth and glucose metabolism in GBM. This article is part of a Special Issue entitled "Targeting alternative glucose metabolism and regulate pathways in GBM cells for future glioblastoma therapies".
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Affiliation(s)
- Gang Wang
- Department of Pharmaceutics, Shanghai Eighth People's Hospital, Shanghai 200235, China; Hubei University of Medicine, No. 30 People South Road, Shiyan City, Hubei Province 442000, China.
| | - JunJie Wang
- Department of Pharmaceutics, Shanghai Eighth People's Hospital, Shanghai 200235, China; Hubei University of Medicine, No. 30 People South Road, Shiyan City, Hubei Province 442000, China
| | - HuaFu Zhao
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region
| | - Jing Wang
- Department of Neurosurgery/Neuro-oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, China
| | - Shing Shun Tony To
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region
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22
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Zhong D, He G, Zhao S, Li J, Lang Y, Ye W, Li Y, Jiang C, Li X. LRG1 modulates invasion and migration of glioma cell lines through TGF-β signaling pathway. Acta Histochem 2015; 117:551-8. [PMID: 26049667 DOI: 10.1016/j.acthis.2015.05.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 05/06/2015] [Accepted: 05/07/2015] [Indexed: 12/20/2022]
Abstract
Studies have shown that the abnormal expression of leucine-rich α2 glycoprotein 1 (LRG1) is associated with multiple malignancies, yet its role in glioma pathology remains to be elucidated. In this study, we investigated the role of LRG1 in regulating proliferation, migration and invasion of glioma cells by establishing glioma cell strains with constitutively silenced or elevated LRG1 expression. LRG1 overexpression and silenced cell lines demonstrated modulation of glioma cellular proliferation, migration and invasion through MTT, cell scratching and Transwell assays. Furthermore, overexpression of LRG1 led to augmented activation of transforming growth factor-β (TGF-β) signaling pathway as well as downregulation of E-cadherin and resultant enhanced invasiveness, which was reversed by TGF-β signaling pathway inhibitor SB431542. In summary, our findings suggest that LRG1 promotes invasion and migration of glioma cells through TGF-β signaling pathway.
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Mu Q, Wang L, Yu F, Gao H, Lei T, Li P, Liu P, Zheng X, Hu X, Chen Y, Jiang Z, Sayari AJ, Shen J, Huang H. Imp2 regulates GBM progression by activating IGF2/PI3K/Akt pathway. Cancer Biol Ther 2015; 16:623-33. [PMID: 25719943 DOI: 10.1080/15384047.2015.1019185] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Glioblastomas multiforme (GBM) are the most frequently occurring malignant brain cancers. Treatment for GBM consists of surgical resection and subsequent adjuvant radiation therapy and chemotherapy. Despite this, GBM patient survival is limited to 12-15 months, and researchers are continually trying to develop improved therapy options. Insulin-like growth factor 2 mRNA-binding protein 2 (Imp2) is known to be upregulated in many cancers and is known to regulate the signaling activity of insulin-like growth factor 2 (IGF2). However, relatively little is known about its role in malignant development of GBM. In this study, we first found Imp2 is upregulated in GBM tissues by using clinical samples and public database search. Studies with loss and gain of Imp2 expression in in vitro GBM cell culture system demonstrated the role of Imp2 in promoting GBM cell proliferation, migration, invasion and epithelial-to-mesenchymal transition (EMT). Additionally, our results show that Imp2 regulates the activity of IGF2, which further activates PI3K/Akt signaling, thereby to promote GBM malignancy. Inhibition of Imp2 was also found to sensitize GBM to temozolomide treatment. These observations add to the current knowledge of GBM biology, and may prove useful in development of more effective GBM therapy.
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Key Words
- Akt
- E-cadherin
- EMT
- EMT, epithelial-mesenchymal transition
- GBM
- GBM, glioblastomas multiforme
- GBM-P, semi-established GBM primary cells
- GBM-RE, semi-established recurrent TMZ-resistant GBM primary cells
- IGF2
- IGF2, insulin-like growth factor 2
- Imp2
- Imp2, insulin-like growth factor 2 mRNA-binding protein 2
- KD, knockdown
- N-cadherin
- OE, overexpressing
- PI3K
- PI3K, phosphatidyl inositol 3-kinase
- TMZ, temozolomide
- Temozolomide
- Vimentin
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Affiliation(s)
- Qingchun Mu
- a Department of Neurosurgery; The First Hospital of Jilin University ; Changchun , Jilin , China
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