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Ali M, Mishra D, Singh RP. Cancer Pathways Targeted by Berberine: Role of microRNAs. Curr Med Chem 2024; 31:5178-5198. [PMID: 38303534 DOI: 10.2174/0109298673275121231228124031] [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: 07/31/2023] [Revised: 11/26/2023] [Accepted: 12/06/2023] [Indexed: 02/03/2024]
Abstract
Cancer is a complex and heterogeneous malignant disease. Due to its multifactorial nature, including progressive changes in genetic, epigenetic, transcript, and protein levels, conventional therapeutics fail to save cancer patients. Evidence indicates that dysregulation of microRNA (miRNA) expression plays a crucial role in tumorigenesis, metastasis, cell proliferation, differentiation, metabolism, and signaling pathways. Moreover, miRNAs can be used as diagnostic and prognostic markers and therapeutic targets in cancer. Berberine, a naturally occurring plant alkaloid, has a wide spectrum of biological activities in different types of cancers. Inhibition of cell proliferation, metastasis, migration, invasion, and angiogenesis, as well as induction of cell cycle arrest and apoptosis in cancer cells, is reported by berberine. Recent studies suggested that berberine regulates many oncogenic and tumor suppressor miRNAs implicated in different phases of cancer. This review discussed how berberine inhibits cancer growth and propagation and regulates miRNAs in cancer cells. And how berberine-mediated miRNA regulation changes the landscape of transcripts and proteins that promote or suppress cancer progression. Overall, the underlying molecular pathways altered by berberine and miRNA influencing the tumor pathophysiology will enhance our understanding to combat the malignancy.
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Affiliation(s)
- Mansoor Ali
- Cancer Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Deepali Mishra
- Cancer Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Rana Pratap Singh
- Cancer Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
- Special Centre for Systems Medicine, Jawaharlal Nehru University, New Delhi, India
- Skaggs School of Pharmacy and Pharmaceutical Sciences, Department of Pharmaceutical Sciences, University of Colorado Denver, Aurora, CO, USA
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2
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ARID1A deficiency is targetable by AKT inhibitors in HER2-negative gastric cancer. Gastric Cancer 2023; 26:379-392. [PMID: 36811690 DOI: 10.1007/s10120-023-01373-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 02/10/2023] [Indexed: 02/24/2023]
Abstract
BACKGROUND The PI3K/AKT signaling pathway is frequently activated in gastric cancer (GC); however, AKT inhibitors are not effective in unselected GC patients in clinical trials. Mutations in AT-rich interactive domain 1A (ARID1A), which are found in approximately 30% of GC patients, activate PI3K/AKT signaling, suggesting that targeting the ARID1A deficiency-activated PI3K/AKT pathway is a therapeutic candidate for ARID1A-deficient GC. METHODS The effect of AKT inhibitors was evaluated using cell viability and colony formation assays in ARID1A-deficient and ARID1A knockdown ARID1A-WT GC cells as well as in HER2-positive and HER2-negative GC. The Cancer Genome Atlas cBioPortal and Gene Expression Omnibus microarray databases were accessed to determine the extent of dependence of GC cell growth on the PI3K/AKT signaling pathway. RESULTS AKT inhibitors decreased the viability of ARID1A-deficient cells and the inhibitory effect was greater in ARID1A-deficient/HER2-negative GC cells. Bioinformatics data suggested that PI3K/AKT signaling plays a greater role in proliferation and survival in ARID1A-deficient/HER2-negative GC cells than in ARID1A-deficient/HER2-positive cells, supporting the higher therapeutic efficacy of AKT inhibitors. CONCLUSIONS The effect of AKT inhibitors on cell proliferation and survival is affected by HER2 status, providing a rationale for exploring targeted therapy using AKT inhibitors in ARID1A-deficient/HER2-negative GC.
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Song F, Dai Q, Grimm MO, Steinbach D. The Antithetic Roles of IQGAP2 and IQGAP3 in Cancers. Cancers (Basel) 2023; 15:cancers15041115. [PMID: 36831467 PMCID: PMC9953781 DOI: 10.3390/cancers15041115] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/02/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023] Open
Abstract
The scaffold protein family of IQ motif-containing GTPase-activating proteins (IQGAP1, 2, and 3) share a high degree of homology and comprise six functional domains. IQGAPs bind and regulate the cytoskeleton, interact with MAP kinases and calmodulin, and have GTPase-related activity, as well as a RasGAP domain. Thus, IQGAPs regulate multiple cellular processes and pathways, affecting cell division, growth, cell-cell interactions, migration, and invasion. In the past decade, significant evidence on the function of IQGAPs in signal transduction during carcinogenesis has emerged. Compared with IQGAP1, IQGAP2 and IQGAP3 were less analyzed. In this review, we summarize the different signaling pathways affected by IQGAP2 and IQGAP3, and the antithetic roles of IQGAP2 and IQGAP3 in different types of cancer. IQGAP2 expression is reduced and plays a tumor suppressor role in most solid cancer types, while IQGAP3 is overexpressed and acts as an oncogene. In lymphoma, for example, IQGAPs have partially opposite functions. There is considerable evidence that IQGAPs regulate a multitude of pathways to modulate cancer processes and chemoresistance, but some questions, such as how they trigger this signaling, through which domains, and why they play opposite roles on the same pathways, are still unanswered.
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Affiliation(s)
- Fei Song
- Department of Urology, Jena University Hospital, 07740 Jena, Germany
| | - Qingqing Dai
- Department of Internal Medicine IV (Gastroenterology, Hepatology, and Infectious Diseases), Jena University Hospital, 07740 Jena, Germany
| | - Marc-Oliver Grimm
- Department of Urology, Jena University Hospital, 07740 Jena, Germany
| | - Daniel Steinbach
- Department of Urology, Jena University Hospital, 07740 Jena, Germany
- Correspondence:
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Xiang Z, Chen Y, Qiu J. An integrated chemical analysis and network pharmacology approach to identify quality markers of Actinidia eriantha Benth radix on gastric cancer. PHYTOCHEMICAL ANALYSIS : PCA 2022; 33:851-868. [PMID: 35570754 DOI: 10.1002/pca.3134] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/23/2022] [Accepted: 04/25/2022] [Indexed: 06/15/2023]
Abstract
INTRODUCTION Actinidia eriantha Benth radix (AEBR) is one of the most commonly used medicines by the She people in China, used primarily for the treatment of tumours of the digestive tract. There is currently limited to no data on the quality control of AEBR. OBJECTIVES The aim of this study was to identify quality markers of AEBR. MATERIAL AND METHODS An ultra-performance lquid chromatography quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS) method was used to identify and analyse the components of AEBR from water extracts. An ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method was also established for the simultaneous determination of 13 active components in the water extracts. The network pharmacology method was used to screen for quality markers of AEBR in gastric cancer. RESULTS This study tentatively identified 199 chemical constituents and isomers, including 67 pentacyclic triterpenoids, 20 flavonoids, 39 phenolic acids, 18 coumarins, and other compounds. The 13 active components in the water extracts were successfully determined using a validated UPLC-MS/MS method. Based on the network pharmacology method, four compounds were selected as quality markers of AEBR. CONCLUSION This study provides an important reference for the quality control of AEBR. Chemical analysis combined with network pharmacology provides an effective strategy for the discovery of quality markers in traditional Chinese/herb medicine.
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Affiliation(s)
- Zheng Xiang
- Medical School, Zhejiang University City College, Hangzhou, China
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Yuanyuan Chen
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Jieying Qiu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
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Spirina LV, Avgustinovich AV, Bakina OV, Afanas’ev SG, Volkov MY, Kebekbayeva AY. LC3B, mTOR, AMPK Are Molecular Targets for Neoadjuvant Chemotherapy in Gastric Cancers. Curr Issues Mol Biol 2022; 44:2772-2782. [PMID: 35877414 PMCID: PMC9315670 DOI: 10.3390/cimb44070190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 06/22/2022] [Accepted: 06/24/2022] [Indexed: 11/19/2022] Open
Abstract
Autophagy plays a dual role in oncogenesis processes. On one hand, autophagy enhances the cell resistance to oncogenic factors, and on the other hand, it participates in the tumor progression. The aim of the study was to find the associations between the effectiveness of the FLOT regimen in resectable gastric cancers (GCs) with the key autophagy-related proteins. Materials and Methods: The study included 34 patients with morphologically verified gastric cancer. All patients had FLOT neoadjunvant chemotherapy (NACT) (fluorouracil, leucovorin, oxaliplatin, and docetaxel) followed by gastrectomy. The studied tissue material was the non-transformed and tumor tissues obtained during diagnostic video gastroscopy in patients before the start of the combined treatment and after surgical treatment, frozen after collection. The LC3B, mTOR, and AMPK expression was determined by real-time PCR. The content of the LC3B protein was determined by Western blotting analysis. Results: The mRNA level and the content of the LC3B protein were associated with the tumor stage and the presence of signet ring cells. The AMPK mRNA level was increased in patients with the T4N0-2M0 stage by 37.7 and 7.33 times, which was consequently compared with patients with the T2N0M0 and T3N0-1M0 stages. The opposite changes in the mTOR and AMPK in the GCs before anti-cancer therapy were noted. The tumor size and regional lymph node affections were associated with a decrease in the mTOR mRNA level. A decrease in the mTOR expression was accompanied by an increase in the AMPK expression in the GCs. The mTOR expression was reduced in patients with a cancer spreading; in contrast, AMPK grew with the tumor size. There was an increase in the LC3B expression, which can probably determine the response to therapy. An increase in LC3B mRNA before the start of treatment and the protein content in cancers after NACT with a decrease in therapy effectiveness was recorded. There was an increase in the protein level in patients with partial regression and stabilization by 3.65 and 5.78 times, respectively, when compared with patients with complete tumor regression was noted. Conclusions: The anticancer effectiveness in GCS is down to the LC3B, mTOR, and AMPK expression. These were found to be entire molecular targets affecting the cancer progression and metastasis as well as the NACT effectiveness.
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Affiliation(s)
- Liudmila V. Spirina
- Biochemistry and Molecular Biology Department, Siberian State Medical University, 2, Moskovsky Trakt, Tomsk 634050, Russia; (O.V.B.); (A.Y.K.)
- Tomsk National Research Medical Center of the Russian Academy of Sciences, Cancer Research Institute, 5 Kooperativny Street, Tomsk 634050, Russia; (A.V.A.); (S.G.A.); (M.Y.V.)
- Correspondence:
| | - Alexandra V. Avgustinovich
- Tomsk National Research Medical Center of the Russian Academy of Sciences, Cancer Research Institute, 5 Kooperativny Street, Tomsk 634050, Russia; (A.V.A.); (S.G.A.); (M.Y.V.)
| | - Olga V. Bakina
- Biochemistry and Molecular Biology Department, Siberian State Medical University, 2, Moskovsky Trakt, Tomsk 634050, Russia; (O.V.B.); (A.Y.K.)
- Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences, 2/4, pr. Akademicheskii, Tomsk 634055, Russia
| | - Sergey G. Afanas’ev
- Tomsk National Research Medical Center of the Russian Academy of Sciences, Cancer Research Institute, 5 Kooperativny Street, Tomsk 634050, Russia; (A.V.A.); (S.G.A.); (M.Y.V.)
| | - Maxim Yu. Volkov
- Tomsk National Research Medical Center of the Russian Academy of Sciences, Cancer Research Institute, 5 Kooperativny Street, Tomsk 634050, Russia; (A.V.A.); (S.G.A.); (M.Y.V.)
| | - Amina Y. Kebekbayeva
- Biochemistry and Molecular Biology Department, Siberian State Medical University, 2, Moskovsky Trakt, Tomsk 634050, Russia; (O.V.B.); (A.Y.K.)
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Kang D, Kim IH. Molecular Mechanisms and Potential Rationale of Immunotherapy in Peritoneal Metastasis of Advanced Gastric Cancer. Biomedicines 2022; 10:biomedicines10061376. [PMID: 35740397 PMCID: PMC9220323 DOI: 10.3390/biomedicines10061376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/03/2022] [Accepted: 06/08/2022] [Indexed: 11/16/2022] Open
Abstract
Peritoneal metastasis (PM) is one of the most frequent metastasis patterns of gastric cancer (GC), and the prognosis of patients with PM is very dismal. According to Paget’s theory, disseminated free cancer cells are seeded and survive in the abdominal cavity, adhere to the peritoneum, invade the subperitoneal tissue, and proliferate through angiogenesis. In these sequential processes, several key molecules are involved. From a therapeutic point of view, immunotherapy with chemotherapy combination has become the standard of care for advanced GC. Several clinical trials of newer immunotherapy agents are ongoing. Understanding of the molecular process of PM and the potential rationale of immunotherapy for PM treatment is necessary. Beyond understanding of the molecular aspect of PM, many studies have been conducted on the modality of treatment of PM. Notably, intraperitoneal approaches, including chemotherapy or immunotherapy, have been conducted, because systemic treatment of PM has limitations. In this study, we reviewed the molecular mechanisms and immunologic aspects of PM, and intraperitoneal approaches under investigation for treating PM.
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Affiliation(s)
- Donghoon Kang
- Division of Gastroenterology, Department of Internal Medicine, Seoul St. Mary’s Hospital, The Catholic University of Korea, Seoul 06591, Korea;
| | - In-Ho Kim
- Division of Medical Oncology, Department of Internal Medicine, Seoul St. Mary’s Hospital, The Catholic University of Korea, Seoul 06591, Korea
- Correspondence:
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Song S, Zhou J, Li Y, Liu J, Li J, Shu P. Network pharmacology and experimental verification based research into the effect and mechanism of Aucklandiae Radix-Amomi Fructus against gastric cancer. Sci Rep 2022; 12:9401. [PMID: 35672352 PMCID: PMC9174187 DOI: 10.1038/s41598-022-13223-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 05/23/2022] [Indexed: 12/19/2022] Open
Abstract
To investigate the mechanism of the Aucklandiae Radix–Amomi Fructus (AR–AF) herb pair in treating gastric cancer (GC) by using network pharmacology and experimental verification. Using the traditional Chinese medicine system pharmacology database and analysis platform (TCMSP), the major active components and their corresponding targets were estimated and screened out. Using Cytoscape 3.7.2 software, a visual network was established using the active components of AR–AF and the targets of GC. Based on STRING online database, the protein interaction network of vital targets was built and analyzed. With the Database for Annotation, Visualization, and Integrated Discovery (DAVID) server, the gene ontology (GO) biological processes and the Kyoto Encyclopedia of Genes and Genomes (KEGG) signaling pathways of the target enrichment were performed. AutoDock Vina was used to perform molecular docking and calculate the binding affinity. The mRNA and protein expression levels of the hub targets were analyzed by the Oncomine, GEPIA, HPA databases and TIMER online tool, and the predicted targets were verified by qRT–PCR in vitro. Eremanthin, cynaropicrin, and aceteugenol were identified as vital active compounds, and AKT1, MAPK3, IL6, MAPK1, as well as EGFR were considered as the major targets. These targets exerted therapeutic effects on GC by regulating the cAMP signaling pathway, and PI3K-Akt signaling pathway. Molecular docking revealed that these active compounds and targets showed good binding interactions. The validation in different databases showed that most of the results were consistent with this paper. The experimental results confirmed that eremanthin could inhibit the proliferation of AGS by reducing the mRNA expression of hub targets. As predicted by network pharmacology and validated by the experimental results, AR–AF exerts antitumor effects through multiple components, targets, and pathways, thereby providing novel ideas and clues for the development of preparations and the treatment of GC.
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Affiliation(s)
- Siyuan Song
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China.,Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China.,Jiangsu Provincial Hospital of Chinese Medicine, Nanjing, 210029, Jiangsu, China
| | - Jiayu Zhou
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China.,Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China.,Jiangsu Provincial Hospital of Chinese Medicine, Nanjing, 210029, Jiangsu, China
| | - Ye Li
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China.,Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China.,Jiangsu Provincial Hospital of Chinese Medicine, Nanjing, 210029, Jiangsu, China
| | - Jiatong Liu
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China.,Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China
| | - Jingzhan Li
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China.,Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China.,Jiangsu Provincial Hospital of Chinese Medicine, Nanjing, 210029, Jiangsu, China
| | - Peng Shu
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China. .,Nanjing University of Chinese Medicine, Nanjing, 210029, Jiangsu, China. .,Jiangsu Provincial Hospital of Chinese Medicine, Nanjing, 210029, Jiangsu, China.
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8
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Savino L, Di Marcantonio MC, Moscatello C, Cotellese R, Centurione L, Muraro R, Aceto GM, Mincione G. Effects of H 2O 2 Treatment Combined With PI3K Inhibitor and MEK Inhibitor in AGS Cells: Oxidative Stress Outcomes in a Model of Gastric Cancer. Front Oncol 2022; 12:860760. [PMID: 35372019 PMCID: PMC8966616 DOI: 10.3389/fonc.2022.860760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 02/21/2022] [Indexed: 11/13/2022] Open
Abstract
Gastric cancer is worldwide the fifth and third cancer for incidence and mortality, respectively. Stomach wall is daily exposed to oxidative stress and BER system has a key role in the defense from oxidation-induced DNA damage, whilst ErbB receptors have important roles in the pathogenesis of cancer. We used AGS cells as an aggressive gastric carcinoma cell model, treated with H2O2 alone or combined with ErbB signaling pathway inhibitors, to evaluate the effects of oxidative stress in gastric cancer, focusing on the modulation of ErbB signaling pathways and their eventual cross-talk with BER system. We showed that treatment with H2O2 combined with PI3K/AKT and MEK inhibitors influenced cell morphology and resulted in a reduction of cancer cell viability. Migration ability was reduced after H2O2 treatment alone or combined with MEK inhibitor and after PI3K/AKT inhibitor alone. Western blotting analysis showed that oxidative stress stimulated EGFR pathway favoring the MAPKs activation at the expense of PI3K/AKT pathway. Gene expression analysis by RT-qPCR showed ErbB2 and OGG1 increase under oxidative stress conditions. Therefore, we suggest that in AGS cells a pro-oxidant treatment can reduce gastric cancer cell growth and migration via a different modulation of PI3K and MAPKs pathways. Moreover, the observed ErbB2 and OGG1 induction is a cellular response to protect the cells from H2O2-induced cell death. In conclusion, to tailor specific combinations of therapies and to decide which strategy to use, administration of a chemotherapy that increases intracellular ROS to toxic levels, might not only be dependent on the tumor type, but also on the molecular targeting therapy used.
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Affiliation(s)
- Luca Savino
- Department of Innovative Technologies in Medicine and Dentistry, University 'G. d'Annunzio' of Chieti-Pescara, Chieti, Italy
| | - Maria Carmela Di Marcantonio
- Department of Innovative Technologies in Medicine and Dentistry, University 'G. d'Annunzio' of Chieti-Pescara, Chieti, Italy
| | - Carmelo Moscatello
- Department of Medical, Oral and Biotechnological Sciences, University 'G. d'Annunzio' of Chieti-Pescara, Chieti, Italy
| | - Roberto Cotellese
- Department of Medical, Oral and Biotechnological Sciences, University 'G. d'Annunzio' of Chieti-Pescara, Chieti, Italy
| | - Lucia Centurione
- Department of Medicine and Aging Sciences, University 'G. d'Annunzio' of Chieti-Pescara, Chieti, Italy
| | - Raffaella Muraro
- Department of Innovative Technologies in Medicine and Dentistry, University 'G. d'Annunzio' of Chieti-Pescara, Chieti, Italy
| | - Gitana Maria Aceto
- Department of Medical, Oral and Biotechnological Sciences, University 'G. d'Annunzio' of Chieti-Pescara, Chieti, Italy
| | - Gabriella Mincione
- Department of Innovative Technologies in Medicine and Dentistry, University 'G. d'Annunzio' of Chieti-Pescara, Chieti, Italy
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Azuma Y, Uchiyama K, Sugaya T, Yasuda T, Hashimoto H, Kajiwara-Kubota M, Sugino S, Kitae H, Torii T, Mizushima K, Doi T, Inoue K, Dohi O, Yoshida N, Kamada K, Ishikawa T, Takagi T, Konishi H, Naito Y, Itoh Y. Deoxycholic acid delays the wound healing of colonic epithelial cells via transmembrane G-protein-coupled receptor 5. J Gastroenterol Hepatol 2022; 37:134-143. [PMID: 34477242 DOI: 10.1111/jgh.15676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 08/24/2021] [Accepted: 08/30/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIM Efficient intestinal wound healing is essential for good prognoses of ulcerative colitis (UC). Although bile acids and the transmembrane G-protein-coupled receptor (TGR) 5 have been reported to affect wound healing in intestinal epithelial cells, the detailed underlying mechanisms are unclear. Here, we investigated the role of TGR5 in wound healing in the context of colonic epithelial cells in the presence of bile acids. METHODS The expression of TGR5 in the colonic epithelium of both a dextran sulfate sodium (DSS)-induced colitis mouse model (recovery phase), and UC patients in clinical remission, was evaluated. Young adult mouse colonic epithelial (YAMC) cells were then used to evaluate wound healing after treatment with deoxycholic acid (DCA); TGR5 was silenced in YAMC cells via shRNA-transfection, and a wound-healing assay in the presence of DCA was performed. Furthermore, we investigated the role of the activation of AKT in the context of wound healing. RESULTS The expression of TGR5 was decreased in the colonic epithelium of both mice with DSS-induced colitis and UC patients. Additionally, DCA significantly delayed wound healing in YAMC cells but not in TGR5 silenced ones. Of note, the DCA-induced activation of AKT signaling in YAMC cells was inhibited by TGR5 silencing, and AKT inhibitors prevented the wound healing delay induced by DCA. CONCLUSIONS Overall, we show that DCA delays wound healing in the context of colonic epithelial cells through AKT activation. These results may support the development of new therapeutic approaches for epithelial regeneration in UC.
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Affiliation(s)
- Yuka Azuma
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Kazuhiko Uchiyama
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takeshi Sugaya
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takeshi Yasuda
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hikaru Hashimoto
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Mariko Kajiwara-Kubota
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Satoshi Sugino
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hiroaki Kitae
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takashi Torii
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Katsura Mizushima
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Toshifumi Doi
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Ken Inoue
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Osamu Dohi
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Naohisa Yoshida
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Kazuhiro Kamada
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takeshi Ishikawa
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Tomohisa Takagi
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hideyuki Konishi
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yuji Naito
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yoshito Itoh
- Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Matus MF, Malola S, Häkkinen H. Ligand Ratio Plays a Critical Role in the Design of Optimal Multifunctional Gold Nanoclusters for Targeted Gastric Cancer Therapy. ACS NANOSCIENCE AU 2021; 1:47-60. [PMID: 37102116 PMCID: PMC10125177 DOI: 10.1021/acsnanoscienceau.1c00008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Nanodrug delivery systems (NDDSs) based on water-soluble and atomically precise gold nanoclusters (AuNCs) are under the spotlight due to their great potential in cancer theranostics. Gastric cancer (GC) is one of the most aggressive cancers with a low early diagnosis rate, with drug therapy being the primary means to overcome its increasing incidence. In this work, we designed and characterized a set of 28 targeted nanosystems based on Au144(p-MBA)60 (p-MBA = para-mercaptobenzoic acid) nanocluster to be potentially employed as combination therapy in GC treatment. The proposed multifunctional AuNCs are functionalized with cytotoxic drugs (5-fluorouracil and epirubicin) or inhibitors of different signaling pathways (phosphatidylinositol 3-kinases (PI3K)/protein kinase B (Akt)/mammalian target of the rapamycin (mTOR), vascular endothelial growth factor (VEGF), and hypoxia-inducible factor (HIF)) and RGD peptides as targeting ligands, and we studied the role of ligand ratio in their optimal structural conformation using peptide-protein docking and all-atom molecular dynamics (MD) simulations. The results reveal that the peptide/drug ratio is a crucial factor influencing the potential targeting ability of the nanosystem. The most convenient features were observed when the peptide amount was favored over the drug in most cases; however, we demonstrated that the system composition and the intermolecular interactions on the ligand shell are crucial for achieving the desired effect. This approach helps guide the experimental stage, providing essential information on the size and composition of the nanosystem at the atomic level for ligand tuning in order to increase the desired properties.
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Cao RZ, Min L, Liu S, Tian RY, Jiang HY, Liu J, Shao LL, Cheng R, Zhu ST, Guo SL, Li P. Rictor Activates Cav 1 Through the Akt Signaling Pathway to Inhibit the Apoptosis of Gastric Cancer Cells. Front Oncol 2021; 11:641453. [PMID: 34540654 PMCID: PMC8442624 DOI: 10.3389/fonc.2021.641453] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/08/2021] [Indexed: 01/01/2023] Open
Abstract
Background Rapamycin-insensitive companion of mammalian target of rapamycin (Rictor) protein is a core subunit of mammalian target of rapamycin complex 2, and is associated with cancer progression. However, the biological function of Rictor in cancer, particularly its clinical relevance in gastric cancer (GC) remains largely unknown. Methods Rictor expression and its association with clinicopathologic characteristics in GC were analyzed by immunohistochemistry. Effect of Rictor and Caveolin-1 (Cav 1) on GC cells apoptosis was evaluated via overexpression experiment in vitro. Mechanisms of Rictor and Cav 1 in GC were explored through overexpression and knockdown, by immunofluorescence and western blot analyses. Results Rictor was upregulated in GC, and mainly located in the cytoplasm of cancer cells. Moreover, higher Rictor levels were associated with worse prognosis. Rictor could inhibit GC cell apoptosis and promote cell growth in vitro. The results of immunofluorescence revealed that Cav 1 localized in GC cell membrane but did not co-localize with Rictor. Further, Rictor regulated apoptosis-related proteins, long non-coding RNAs and also activated cellular signaling, thereby positively regulating Cav 1 expression. This effect was attenuated by the Akt inhibitor ly294002. Cav 1 did not significantly affect the ability of Rictor to inhibit tumor cell apoptosis. Conclusions Rictor is upregulated in GC and associated with worse prognosis. It inhibits tumor apoptosis and activates Cav 1 through the Akt signaling pathway to inhibit the apoptosis of GC cells. Rictor is, therefore, a promising prognostic biomarker and possible therapeutic target in GC patients.
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Affiliation(s)
- Rui-Zhen Cao
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Beijing, China.,Department of Gastroenterology, Ordos Central Hospital, National Clinical Research Center for Digestive Disease-Ordos Subcenter, Ordos, China
| | - Li Min
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Beijing, China
| | - Si Liu
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Beijing, China
| | - Ru-Yue Tian
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Beijing, China
| | - Hai-Yan Jiang
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Beijing, China.,Department of Gastroenterology, Beijing University of Chinese Medicine Third Affiliated Hospital, Beijing, China
| | - Juan Liu
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Beijing, China.,Department of Gastroenterology, Shanxi Province Cancer Hospital, Shanxi Medical University, Taiyuan, China
| | - Lin-Lin Shao
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Beijing, China
| | - Rui Cheng
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Beijing, China
| | - Sheng-Tao Zhu
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Beijing, China
| | - Shui-Long Guo
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Beijing, China
| | - Peng Li
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing Digestive Disease Center, Beijing Key Laboratory for Precancerous Lesion of Digestive Disease, Beijing, China
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12
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Lin DC, Zheng SY, Zhang ZG, Luo JH, Zhu ZL, Li L, Chen LS, Lin X, Sham JSK, Lin MJ, Zhou RX. TRPC3 promotes tumorigenesis of gastric cancer via the CNB2/GSK3β/NFATc2 signaling pathway. Cancer Lett 2021; 519:211-225. [PMID: 34311033 DOI: 10.1016/j.canlet.2021.07.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 07/10/2021] [Accepted: 07/22/2021] [Indexed: 01/27/2023]
Abstract
The transient receptor potential canonical (TRPC) channels have been implicated in various types of malignancies including gastric cancer (GC). However, the detailed mechanisms of TRPC channels underlying cell proliferation and apoptosis of GC cells remain largely unknown. Here, we report that TRPC3 was highly expressed in clinical GC specimens and correlated with GC malignant progression and poor prognosis. Forced expression of TRPC3 in GC cells enhanced both receptor-operated Ca2+ entry (ROCE) and store-operated Ca2+ entry (SOCE) and promoted the nuclear factor of activated T cell 2 (NFATc2) nuclear translocation by AKT/GSK-3β and CNB2 signaling. Pharmacological inhibition of TRPC3 or CRISPR/Cas9-mediated TRPC3 knockout effectively inhibited the growth of GC cells both in vitro and in vivo. These effects were reversible by the rescue of TRPC3 expression. Furthermore, we confirmed the role of TRPC3 and the ROCE-AKT/GSK3β-CNB2/NFATc2 signaling cascade in regulating cell cycle checkpoint, apoptosis cascade, and intracellular ROS production in GC. Overall, our findings suggest an oncogenic role of TRPC3 in GC and may highlight a potential target of TRPC3 for therapeutic intervention of GC and its malignant progression.
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Affiliation(s)
- Da-Cen Lin
- The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China; Key Laboratory of Gastrointestinal Cancer (Fujian Medical University), Ministry of Education, Fuzhou, China; Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Fujian Medical University, Fuzhou, China
| | - Si-Yi Zheng
- The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China; Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Fujian Medical University, Fuzhou, China
| | - Zhi-Guang Zhang
- The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China; Key Laboratory of Gastrointestinal Cancer (Fujian Medical University), Ministry of Education, Fuzhou, China
| | - Jian-Hua Luo
- The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China; Key Laboratory of Gastrointestinal Cancer (Fujian Medical University), Ministry of Education, Fuzhou, China
| | - Zhuang-Li Zhu
- The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China; Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Fujian Medical University, Fuzhou, China
| | - Li Li
- The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China; Key Laboratory of Gastrointestinal Cancer (Fujian Medical University), Ministry of Education, Fuzhou, China
| | - Lu-Shan Chen
- The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China; Key Laboratory of Gastrointestinal Cancer (Fujian Medical University), Ministry of Education, Fuzhou, China
| | - Xinjian Lin
- The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China; Key Laboratory of Gastrointestinal Cancer (Fujian Medical University), Ministry of Education, Fuzhou, China
| | - James S K Sham
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| | - Mo-Jun Lin
- The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China; Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, Fujian Medical University, Fuzhou, China.
| | - Rui-Xiang Zhou
- The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China; Key Laboratory of Gastrointestinal Cancer (Fujian Medical University), Ministry of Education, Fuzhou, China.
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13
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Gao HS, Lin SY, Han X, Xu HZ, Gao YL, Qin ZY. Casein kinase 1 (CK1) promotes the proliferation and metastasis of glioma cells via the phosphatidylinositol 3 kinase-matrix metalloproteinase 2 (AKT-MMP2) pathway. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:659. [PMID: 33987357 PMCID: PMC8106055 DOI: 10.21037/atm-21-935] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Background Glioma is a type of tumor that usually occurs in the adult central nervous system. Protein kinases have become important targets for oncotherapy since they are closely correlated with signal transduction. The role of the casein kinase 1 (CK1) gene in glioma remains to be fully elucidated. Methods The mRNA and protein expression of CK1 were analyzed by Realtime PCR, Western blot and immunohistochemistry. The cell behavior was assayed by MTT, Transwell and cell scratch methods. Cell cycle and cell apoptosis were performed by flow cytometer. Construction of stable cell line was completed by lentivirus infection. The nude mouse model was used for in vivo analysis on the role of CK1 by injecting the cells into subcutaneous tissue, tail vein and cerebral cortex. The prognostic role of CK1 in glioma was evaluated using Kaplan-Meier and Cox regression analyses. Results immunohistochemical staining demonstrated that the expression of CK1 in glioma samples was correlated with the grade of glioma. Survival analysis using Kaplan-Meier and multivariate analysis by Cox regression indicated that CK1 could be used as an independent prognostic marker for glioma. The methyl thiazolyl tetrazolium (MTT), transwell, and cell scratch assays demonstrated that the CK1 gene promoted cell proliferation and invasion through the phosphatidylinositol 3 kinase/matrix metalloproteinase 2 (AKT-MMP2) signaling pathway. In vivo experiments in mice also confirmed the ability of CK1 to enhance tumor proliferation and metastasis, with the metastatic site being the small intestine. Conclusions the expression of CK1 was correlated with glioma grade and patient survival and it may enhance glioma proliferation and metastasis via AKT-MMP2 pathway.
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Affiliation(s)
- Hua-Song Gao
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - She-Yu Lin
- Department of Biological Sciences, School of Life Sciences, Nantong University, Nantong, China
| | - Xi Han
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Hong-Zhi Xu
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yi-Lu Gao
- Department of Neurosurgery, Affiliated Hospital of Nantong University, Nantong, China
| | - Zhi-Yong Qin
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
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14
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Overexpression of TGR5 alleviates myocardial ischemia/reperfusion injury via AKT/GSK-3β mediated inflammation and mitochondrial pathway. Biosci Rep 2021; 40:221795. [PMID: 31909787 PMCID: PMC6981096 DOI: 10.1042/bsr20193482] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/26/2019] [Accepted: 12/28/2019] [Indexed: 12/31/2022] Open
Abstract
Ischemia/reperfusion (I/R) injury reduces cell proliferation, triggers inflammation, promotes cell apoptosis and necrosis, which are the leading reasons of morbidity and mortality in patients with cardiac disease. TGR5 is shown to express in hearts, but its functional role in I/R-induced myocardial injury is unclear. In the present study, we aimed to explore the underlying molecular mechanism of TGR5 in hypoxia/reoxygenation (H/R)-induced cardiomyocyte injury in vitro. The results showed that TGR5 was significantly up-regulated in H9C2 (rat cardiomyocyte cells) and human cardiomyocytes (HCMs) after H/R. Overexpression of TGR5 significantly improved cell proliferation, alleviated apoptosis rate, the activities of caspase-3, cleaved caspases-3 and Bax protein expression levels, and increased Bcl-2 level. Overexpression of TGR5 significantly up-regulated ROS generation, stabilized the mitochondrial membrane potential (MMP), and reduced the concentration of intracellular Ca2+ as well as cytosolic translocation of mitochondrial cytochrome c (cyto-c). Meanwhile, overexpressed TGR5 also enhanced the mRNA and protein levels of interleukin (IL)-10, and decreased the mRNA and protein levels of IL-6 and tumor necrosis factor α (TNF-α). The shTGR5+H/R group followed opposite trends. In addition, overexpressed TGR5 induced an increase in the levels of p-AKT and p-GSK-3β. The protective effects of TGR5 were partially reversed by AKT inhibitor MK-2206. Taken together, these results suggest that TGR5 attenuates I/R-induced mitochondrial dysfunction and cell apoptosis as well as inflammation, and these protections may through AKT/GSK-3β pathway.
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15
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Study of the active ingredients and mechanism of Sparganii rhizoma in gastric cancer based on HPLC-Q-TOF-MS/MS and network pharmacology. Sci Rep 2021; 11:1905. [PMID: 33479376 PMCID: PMC7820434 DOI: 10.1038/s41598-021-81485-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 01/05/2021] [Indexed: 12/21/2022] Open
Abstract
Sparganii rhizoma (SL) has potential therapeutic effects on gastric cancer (GC), but its main active ingredients and possible anticancer mechanism are still unclear. In this study, we used HPLC-Q-TOF–MS/MS to comprehensively analyse the chemical components of the aqueous extract of SL. On this basis, a network pharmacology method incorporating target prediction, gene function annotation, and molecular docking was performed to analyse the identified compounds, thereby determining the main active ingredients and hub genes of SL in the treatment of GC. Finally, the mRNA and protein expression levels of the hub genes of GC patients were further analysed by the Oncomine, GEPIA, and HPA databases. A total of 41 compounds were identified from the aqueous extract of SL. Through network
analysis, we identified seven main active ingredients and ten hub genes: acacetin, sanleng acid, ferulic acid, methyl 3,6-dihydroxy-2-[(2-hydroxyphenyl) ethynyl]benzoate, caffeic acid, adenine nucleoside, azelaic acid and PIK3R1, PIK3CA, SRC, MAPK1, AKT1, HSP90AA1, HRAS, STAT3, FYN, and RHOA. The results indicated that SL might play a role in GC treatment by controlling the PI3K-Akt and other signalling pathways to regulate biological processes such as proliferation, apoptosis, migration, and angiogenesis in tumour cells. In conclusion, this study used HPLC-Q-TOF–MS/MS combined with a network pharmacology approach to provide an essential reference for identifying the chemical components of SL and its mechanism of action in the treatment of GC.
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16
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Spirina LV, Avgustinovich AV, Afanas'ev SG, Kondakova IV, Volkov MY, Dobrodeev AY, Boronkina AI. AKT/mTOR Signal Cascade and Expression of PD-1, PD-L1, and PD-L2 in Gastric Cancer. Bull Exp Biol Med 2020; 170:75-78. [PMID: 33231797 DOI: 10.1007/s10517-020-05007-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Indexed: 01/21/2023]
Abstract
The peculiarities of gastric cancer development associated with the expression levels of components of the AKT/mTOR signaling cascade and PD, PD-L1, PD-L2 have not yet been identified. We revealed the fundamental changes in the expression AKT/mTOR and PD receptors and their ligands associated with dissemination of gastric cancer. An increase in the mRNA level of all components of this cascade was demonstrated. The expression of mTOR and AKT decreased against the background of enhanced expression of PTEN phosphatase. The increase in the expression of PD-1 receptors and PD-L1 and PD-L2 ligands was most pronounced in patients with distant metastases.
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Affiliation(s)
- L V Spirina
- Cancer Research Institute, Tomsk National Research Medical Center, Tomsk, Russia. .,Siberian State Medical University, Ministry of Health of the Russian Federation, Tomsk, Russia.
| | - A V Avgustinovich
- Cancer Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - S G Afanas'ev
- Cancer Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - I V Kondakova
- Cancer Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - M Yu Volkov
- Cancer Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - A Yu Dobrodeev
- Cancer Research Institute, Tomsk National Research Medical Center, Tomsk, Russia
| | - A I Boronkina
- Siberian State Medical University, Ministry of Health of the Russian Federation, Tomsk, Russia
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17
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Liu P, Xue Y, Zheng B, Liang Y, Zhang J, Shi J, Chu X, Han X, Chu L. Crocetin attenuates the oxidative stress, inflammation and apoptosisin arsenic trioxide-induced nephrotoxic rats: Implication of PI3K/AKT pathway. Int Immunopharmacol 2020; 88:106959. [PMID: 32919218 DOI: 10.1016/j.intimp.2020.106959] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/13/2020] [Accepted: 08/28/2020] [Indexed: 12/11/2022]
Abstract
Arsenic trioxide (ATO)-induced renal toxicity through oxidative stress and apoptosis restricts the therapeutic action of acute myelogenous leukemia. Crocetin (Crt) possesses antioxidant and antiapoptosis properties, and has certain renal protective effects, but it has not been reported that it has protective effect on renal injury caused by ATO. The current study explored the effects and mechanisms of Crt on kidney damage induced by ATO. Fifty Sprague-Dawley rats were randomly divided into five groups. Adult rats were given Crt concurrently with ATO for 1 week. On the 8th day, rats were killed and blood and kidney tissues were collected. Histopathological changes were measured, and kidneytissues and serum were used to determine renal function and antioxidant enzyme activity. In addition, the protein expression levels of P-PI3K, PI3K, P-AKT, AKT, CytC, Bax, Bcl-2 and Caspase-3 were determined via western blot analysis. Results revealed ATO induced renal morphological alterations and activated serum BUN and CRE. Compared with the control group, ROS, MDA, IL-1β, TNF-α, protein carbonyls (PC), lipid hydroperoxides (LOOH) and arsenic concentration levels were found to be significantly increased and SOD, CAT, GSH-Px, GSH and total sulphydryl groups (TSH) levels were attenuated in the ATO group. Crt markedly reduced oxidative stress in ATO-induced nephrotoxicity. Further, ATO induced apoptosis by significantly enhancing CytC, Bax and Caspase-3 and inhibiting Bcl-2. Administration with Crt markedly improved the expression of apoptosis factor. Moreover, Crt treatment stimulated the expressions of P-PI3K, PI3K, P-AKT, AKT induced by ATO. This study indicates Crt could prevent renal injury caused by ATO through inhibiting oxidative stress, inflammation and apoptosis, and its mechanism may be related to activation of PI3K/Akt signaling pathway.
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Affiliation(s)
- Panpan Liu
- School of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang 050200, Hebei, China
| | - Yurun Xue
- School of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang 050200, Hebei, China
| | - Bin Zheng
- School of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang 050200, Hebei, China
| | - Yingran Liang
- School of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang 050200, Hebei, China
| | - Jianping Zhang
- School of Basic Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050200, Hebei, China
| | - Jing Shi
- The Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, Hebei, China
| | - Xi Chu
- The Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, Hebei, China.
| | - Xue Han
- School of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang 050200, Hebei, China.
| | - Li Chu
- School of Pharmacy, Hebei University of Chinese Medicine, Shijiazhuang 050200, Hebei, China.
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18
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ZiYinHuaTan Recipe Inhibits Cell Proliferation and Promotes Apoptosis in Gastric Cancer by Suppressing PI3K/AKT Pathway. BIOMED RESEARCH INTERNATIONAL 2020; 2020:2018162. [PMID: 32382534 PMCID: PMC7193275 DOI: 10.1155/2020/2018162] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/15/2019] [Accepted: 07/25/2019] [Indexed: 01/26/2023]
Abstract
In recent years, traditional Chinese medicine has played an important role in the treatment of gastric cancer in China. ZiYinHuaTan (ZYHT) recipe was developed for advanced gastric cancer and had shown its promising value in the clinic. In this study, we explore the effect of ZYHT on gastric cancer in vitro and in vivo. ZYHT can inhibit tumor growth and improve the general condition of mice in subcutaneous transplantation nude mice models of gastric cancer. And ZYHT can also inhibit cell proliferation and blocked the cells in G0/G1 to induce cell apoptosis in HGC27 and MGC803 cells. Then, network pharmacology analysis showed that ZYHT may exert antitumor effect mainly through PI3K/AKT signaling pathway. Furthermore, the expression of PI3K, p-Akt, CyclinD1, and Bcl-2 was detected in vitro and in vivo. The results showed that ZYHT could decrease the expression of PI3K, CyclinD1, and Bcl-2 both in vitro and in vivo. These results suggested that ZYHT could be used as a method for the treatment of developed gastric cancer.
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19
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Xu L, Shao Y, Ren L, Liu X, Li Y, Xu J, Ye Y. IQGAP2 Inhibits Migration and Invasion of Gastric Cancer Cells via Elevating SHIP2 Phosphatase Activity. Int J Mol Sci 2020; 21:ijms21061968. [PMID: 32183047 PMCID: PMC7139352 DOI: 10.3390/ijms21061968] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 03/09/2020] [Accepted: 03/12/2020] [Indexed: 12/30/2022] Open
Abstract
Previous studies have shown reduced expression of Src homology 2-containing inositol 5-phosphatase 2 (SHIP2) and its tumor-suppressive role in gastric cancer (GC). However, the precise role of SHIP2 in the migration and invasion of GC cells remains unclear. Here, an IQ motif containing the GTPase-activating protein 2 (IQGAP2) as a SHIP2 binding partner, was screened and identified by co-immunoprecipitation and mass spectrometry studies. While IQGAP2 ubiquitously expressed in GC cells, IQGAP2 and SHIP2 co-localized in the cytoplasm of GC cells, and this physical association was confirmed by the binding of IQGAP2 to PRD and SAM domains of SHIP2. The knockdown of either SHIP2 or IQGAP2 promoted cell migration and invasion by inhibiting SHIP2 phosphatase activity, activating Akt and subsequently increasing epithelial–mesenchymal transition (EMT). Furthermore, knockdown of IQGAP2 in SHIP2-overexpressing GC cells reversed the inhibition of cell migration and invasion by SHIP2 induction, which was associated with the suppression of elevated SHIP2 phosphatase activity. Moreover, the deletion of PRD and SAM domains of SHIP2 abrogated the interaction and restored cell migration and invasion. Collectively, these results indicate that IQGAP2 interacts with SHIP2, leading to the increment of SHIP2 phosphatase activity, and thereby inhibiting the migration and invasion of GC cells via the inactivation of Akt and reduction in EMT.
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Affiliation(s)
| | | | | | | | | | | | - Yan Ye
- Correspondence: ; Tel.: +86-551-65161139
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20
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Wang Z, Xu H, Zhang J, Jin H, Wei P. Basic fibroblast growth factor blockade enhances lung cancer cell invasion by activating the AKT/MMP-2/VEGF pathway. Basic Clin Pharmacol Toxicol 2020; 126:43-50. [PMID: 31314153 DOI: 10.1111/bcpt.13290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 07/08/2019] [Indexed: 01/19/2023]
Abstract
Basic fibroblast growth factor (bFGF) can stimulate cancer cell growth and invasion; however, the influence of bFGF blockade remains unclear. Therefore, we aimed to explore the effects of bFGF blockade on the growth and invasion in A549 (high bFGF expression) and H2122 (low bFGF expression) lung cancer cells. We found that the blocking of bFGF by a neutralizing monoclonal antibody suppressed the growth of A549 cells but not of H2122 cells, as well as strongly induced the invasiveness of A549 cancer cells. Furthermore, bFGF blockade activated the AKT pathway and enhanced the expression levels of matrix metalloproteinase (MMP)-2 and vascular endothelial growth factor (VEGF) in A549 cells. These responses could be reversed by treatment with AKT inhibitor and siMMP-2, thus indicating the involvement of the AKT/MMP-2/VEGF-positive feedback loop. Finally, we confirmed that the anti-bFGF-induced invasion of cancer cells could be rescued by inhibiting the AKT/MMP-2/VEGF loop. Our results revealed that bFGF blockade suppresses cell growth but promotes cell invasion in lung cancer cells with high bFGF expression levels. Our data further reinforced the importance of the AKT/MMP-2/VEGF loop in regulating anti-bFGF-induced tumour cell invasion and suggested the limitations of the bFGF-targeting strategy in lung cancer treatment.
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Affiliation(s)
- Zhiyong Wang
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, China.,Department of Immunology, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| | - Huan Xu
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, China
| | - Junai Zhang
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, China
| | - Hua Jin
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, China
| | - Pei Wei
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, China
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21
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Lu Z, Luo T, Pang T, Du Z, Yin X, Cui H, Fang G, Xue X. MALAT1 promotes gastric adenocarcinoma through the MALAT1/miR-181a-5p/AKT3 axis. Open Biol 2019; 9:190095. [PMID: 31480991 PMCID: PMC6769293 DOI: 10.1098/rsob.190095] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 08/01/2019] [Indexed: 12/13/2022] Open
Abstract
Gastric adenocarcinoma, which originates from the gastric mucosal epithelium, has the highest incidence among various malignant tumours in China. As a crucial long non-coding RNA, metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) has been suggested to play an important role in many tumours. Here, we aimed to investigate the role and underlying mechanism of MALAT1 in gastric adenocarcinoma. Quantitative reverse transcription polymerase chain reaction was applied to determine the expression levels of MALAT1 in serum and cell lines. A CCK-8 assay and a clonogenic survival assay were used to examine cell proliferation and apoptosis. The protein level of RAC-γ serine/threonine-specific protein kinase (AKT3) was determined by western blot. Our results showed that MALAT1 was highly expressed in the serum of patients with gastric adenocarcinoma and in cell lines. Downregulating MALAT1 inhibited proliferation and promoted apoptosis of MGC-803 cells. In addition, MALAT1 directly targeted and decreased the expression of miR-181a-5p, which in turn upregulated the expression of AKT3. Further, overexpressing miR-181a-5p or directly inhibiting the AKT pathway with the inhibitor ipatasertib exhibited similar effects to MALAT1 knockdown. Our research proposes a novel mechanism where the role of MALAT1 is dependent on the MALAT1/miR-181a-5p/AKT3 axis. MALAT1 competes with AKT3 for miR-181a-5p binding, thereby upregulating the AKT3 protein level and ultimately promoting the growth of gastric adenocarcinoma.
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Affiliation(s)
- Zhengmao Lu
- Department of General Surgery, Changhai Hospital, the Second Military Medical University, SMMU, No. 168 Changhai Road, Yangpu District, Shanghai 200433, People's Republic of China
| | - Tianhang Luo
- Department of General Surgery, Changhai Hospital, the Second Military Medical University, SMMU, No. 168 Changhai Road, Yangpu District, Shanghai 200433, People's Republic of China
| | - Tao Pang
- Department of General Surgery, Changhai Hospital, the Second Military Medical University, SMMU, No. 168 Changhai Road, Yangpu District, Shanghai 200433, People's Republic of China
| | - Zongxin Du
- The People's Hospital of Gongliu, No. 71 East Ring Road, Gongliu County, Yili 835400, Xingjiang, People's Republic of China
| | - Xiaoyi Yin
- Department of General Surgery, Changhai Hospital, the Second Military Medical University, SMMU, No. 168 Changhai Road, Yangpu District, Shanghai 200433, People's Republic of China
| | - Hangtian Cui
- Department of General Surgery, Changhai Hospital, the Second Military Medical University, SMMU, No. 168 Changhai Road, Yangpu District, Shanghai 200433, People's Republic of China
| | - Guoen Fang
- Department of General Surgery, Changhai Hospital, the Second Military Medical University, SMMU, No. 168 Changhai Road, Yangpu District, Shanghai 200433, People's Republic of China
| | - Xuchao Xue
- Department of General Surgery, Changhai Hospital, the Second Military Medical University, SMMU, No. 168 Changhai Road, Yangpu District, Shanghai 200433, People's Republic of China
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22
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Cheng JY, Yang JB, Liu Y, Xu M, Huang YY, Zhang JJ, Cao P, Lyu JX, Shen Y. Profiling and targeting of cellular mitochondrial bioenergetics: inhibition of human gastric cancer cell growth by carnosine. Acta Pharmacol Sin 2019; 40:938-948. [PMID: 30560903 DOI: 10.1038/s41401-018-0182-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 10/07/2018] [Indexed: 01/24/2023] Open
Abstract
L-Carnosine (β-alanyl-L-histidine) is a naturally occurring dipeptide distributed in various organs of mammalians. We previously showed that carnosine inhibited proliferation of human gastric cancer cells through targeting both mitochondrial bioenergetics and glycolysis pathway. But the mechanism underlying carnosine action on mitochondrial bioenergetics of tumor cells remains unclear. In the current study we investigated the effect of carnosine on the growth of human gastric cancer SGC-7901 cells in vitro and in vivo. We firstly showed that hydrolysis of carnosine was not a prerequisite for its anti-gastric cancer effect. Treatment of SGC-7901 cells with carnosine (20 mmol/L) significantly decreased the activities of mitochondrial respiratory chain complexes I-IV and mitochondrial ATP production, and downregulated 13 proteins involved in mitochondrial bioenergetics. Furthermore, carnosine treatment significantly suppressed the phosphorylation of Akt, while inhibition of Akt activation with GSK690693 significantly reduced the localization of prohibitin-1 (PHB-1) in the mitochondria of SGC-7901 and BGC-823 cells. In addition, we showed that silencing of PHB-1 gene with shRNA markedly reduced the mitochondrial PHB-1 in SGC-7901 cells, and significantly decreased the colony formation capacity and growth rate of the cells. In SGC-7901 cell xenograft nude mice, administration of carnosine (250 mg kg/d, ip, for 3 weeks) significantly inhibited the tumor growth and decreased the expression of mitochondrial PHB-1 in tumor tissue. Taken together, these results suggest that carnosine may act on multiple mitochondrial proteins to down-regulate mitochondrial bioenergetics and then to inhibit the growth and proliferation of SGC-7901 and BGC-823 cells.
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23
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Long non-coding RNA RP11-6O2.4 indicates poor prognosis and suppresses cell cycle progression through the p38-MAPK signaling pathway in gastric cancer. Mol Cell Toxicol 2019. [DOI: 10.1007/s13273-019-0037-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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24
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Zhang L, Wu Q, He C, Liang D, Yi Q, Shi J, Wan B, Yang R, Li L, Sha S, Chang Q. HOXB9 inhibits proliferation in gastric carcinoma cells via suppression of phosphorylated-Akt and NF-κB-dependent Snail expression. Dig Liver Dis 2019; 51:157-165. [PMID: 30314948 DOI: 10.1016/j.dld.2018.08.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 07/27/2018] [Accepted: 08/14/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND HOXB9 is a homeobox transcription factor which plays an important role in carcinoma development. This protein has been shown to inhibit cancer cell proliferation. However, the mechanisms that underpin HOXB9-mediated inhibition of cellular proliferation remain to be elucidated. METHODS In this study, two gastric cancer cell lines, SGC7901 and MKN45, were transfected with plasmids pLVX-HOXB9 and shHOXB9. These transfections resulted in the over-expression of the HOXB9 gene in the SGC7901/HOXB9 cells and knockdown of the HOXB9 gene in the MKN45/shHOXB9 cells. RESULTS Over-expression of the HOXB9 gene in the SGC7901/HOXB9 cells caused an increase in the apoptotic rate and a concomitant reduction in metastatic ability compared with the knocked-down MKN45/shHOXB9 cells. Moreover, a reduction in the expression of the phosphorylated-Akt protein was observed in the SGC7901/HOXB9 cells, while an increase in expression of the same protein was observed in the MKN45/shHOXB9 cells. We also observed that HOXB9 mediated a reduction in both NF-κB and N-cadherin and Snail protein expression. Conversely, HOXB9 caused an increase in the expression of E-cadherin. CONCLUSIONS In summary, this study reports that HOXB9 can suppress both phosphorylated-Akt expression and NF-κB activity. The latter phenomenon affects Snail protein expression and the inhibition of gastric carcinoma proliferation.
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Affiliation(s)
- Li Zhang
- Department of General Surgery, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Qinghua Wu
- Department of General Surgery, Ruijin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Changyu He
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Digestive Surgery, and Shanghai Key Laboratory of Gastric Neoplasms, Shanghai, China
| | - Dongyu Liang
- Clinical Research Center, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Qingqing Yi
- Clinical Research Center, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Junfeng Shi
- Shanghai Key Laboratory for Molecular Imaging, Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Boshun Wan
- Department of General Surgery, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Rong Yang
- Department of Pathology, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Luyi Li
- Clinical Research Center, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Shuang Sha
- Shanghai Key Laboratory for Molecular Imaging, Shanghai University of Medicine & Health Sciences, Shanghai, China.
| | - Qing Chang
- Clinical Research Center, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China.
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25
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Yu H, Sun J, Jiang S, Xu Y. MicroRNA-490-3p regulates cell proliferation and apoptosis in gastric cancer via direct targeting of AKT1. Exp Ther Med 2018; 17:1330-1336. [PMID: 30680010 PMCID: PMC6327659 DOI: 10.3892/etm.2018.7042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 08/31/2018] [Indexed: 12/20/2022] Open
Abstract
microRNA (miRNA) expression profiles of gastric cancer (GC) and adjacent healthy gastric mucosa tissue were used to search for differentially expressed miRNAs, identifying downregulated miRNA-490-3p in GC. The present study aimed to investigate the cellular function of miRNA-490-3p and its underlying mechanism in the occurrence and progression of GC. Reverse transcription-quantitative polymerase chain reaction was used to measure miRNA-490-3p expression levels in GC tissue and adjacent healthy tissue samples. The regulatory effect of miRNA-490-3p on the proliferation and apoptosis of GC cells was detected by cell counting kit-8, colony formation assay and flow cytometry. Bioinformatic methods were used to predict AKT1 as the target of miRNA-490-3p and this was verified by a dual-luciferase reporter assay. Furthermore, western blot analysis was used to measure protein expression of AKT1 in GC cells following overexpression or knockdown of miRNA-490-3p. The present study demonstrated that miRNA-490-3p expression was downregulated in GC tissue, compared with adjacent healthy tissue. In particular, miRNA-490-3p expression levels were significantly decreased in GC tissue samples from patients with advanced cancer (stage III+IV) compared with samples from patients with early-stage (stage I+II) cancer. Additionally, miRNA-490-3p expression levels were significantly decreased in GC tissue samples from patients whose tumor size was >3 cm, compared with those <3 cm. In vitro, downregulation of miRNA-490-3p promoted cell proliferation and suppressed apoptosis. In addition, rescue experiments demonstrated that overexpression of AKT1 partially reversed the effect of miRNA-490-3p on cell proliferation and apoptosis. The present study demonstrated that miRNA-490-3p regulated proliferation and apoptosis in gastric cancer cells via direct targeting of AKT1.
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Affiliation(s)
- Hong Yu
- Department of Gastroenterology, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Jianying Sun
- Department of Internal Medicine, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Shaochang Jiang
- Department of Rehabilitation Medicine, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Ying Xu
- Department of Gastroenterology, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
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26
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Liu X, Wu J, Zhang D, Wang K, Duan X, Meng Z, Zhang X. Network Pharmacology-Based Approach to Investigate the Mechanisms of Hedyotis diffusa Willd. in the Treatment of Gastric Cancer. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2018; 2018:7802639. [PMID: 29853970 PMCID: PMC5954954 DOI: 10.1155/2018/7802639] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 03/27/2018] [Accepted: 04/01/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Hedyotis diffusa Willd. (HDW) is one of the renowned herbs often used in the treatment of gastric cancer (GC). However, its curative mechanism has not been fully elucidated. OBJECTIVE To systematically investigate the mechanisms of HDW in GC. METHODS A network pharmacology approach mainly comprising target prediction, network construction, and module analysis was adopted in this study. RESULTS A total of 353 targets of the 32 bioactive compounds in HDW were obtained. The network analysis showed that CA isoenzymes, p53, PIK3CA, CDK2, P27Kip1, cyclin D1, cyclin B1, cyclin A2, AKT1, BCL2, MAPK1, and VEGFA were identified as key targets of HDW in the treatment of GC. The functional enrichment analysis indicated that HDW probably produced the therapeutic effects against GC by synergistically regulating many biological pathways, such as nucleotide excision repair, apoptosis, cell cycle, PI3K/AKT/mTOR signaling pathway, VEGF signaling pathway, and Ras signaling pathway. CONCLUSIONS This study holistically illuminates the fact that the pharmacological mechanisms of HDW in GC might be strongly associated with its synergic modulation of apoptosis, cell cycle, differentiation, proliferation, migration, invasion, and angiogenesis.
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Affiliation(s)
- Xinkui Liu
- Department of Clinical Chinese Pharmacy, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Jiarui Wu
- Department of Clinical Chinese Pharmacy, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Dan Zhang
- Department of Clinical Chinese Pharmacy, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Kaihuan Wang
- Department of Clinical Chinese Pharmacy, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Xiaojiao Duan
- Department of Clinical Chinese Pharmacy, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Ziqi Meng
- Department of Clinical Chinese Pharmacy, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Xiaomeng Zhang
- Department of Clinical Chinese Pharmacy, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China
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27
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Xiao F, Cheng Z, Wang P, Gong B, Huang H, Xing Y, Liu F. MicroRNA-28-5p inhibits the migration and invasion of gastric cancer cells by suppressing AKT phosphorylation. Oncol Lett 2018; 15:9777-9785. [PMID: 29928352 PMCID: PMC6004724 DOI: 10.3892/ol.2018.8603] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Accepted: 09/13/2017] [Indexed: 12/17/2022] Open
Abstract
Gastric cancer is a polygenic disease with a high mortality rate worldwide. Although a number of dysregulated genes have been confirmed to be involved in development and progression of gastric cancer, the molecular mechanisms by which this occurs remain unclear. The present study identified that microRNA (miR-28-5p) was involved in the migration and invasion of gastric cancer cells, and was able to affect the prognosis of patients with gastric cancer. Reverse transcription-quantitative polymerase chain reaction analysis indicated that the expression of miR-28-5p was significantly downregulated in gastric cancer tissues, and that patients with higher expression had a good prognosis. miR-28-5p expression was significantly associated with depth of invasion, lymph node metastasis and pathological stage. Gastric cancer cells overexpressing miR-28-5p exhibited a marked reduction of migration and invasion by Transwell and wound scratch assay. The phosphorylation of RAC serine/threonine-protein kinase (AKT), which affected cellular invasion and metastasis, was significantly inhibited by overexpression of miR-28-5p. In conclusion, miR-28-5p is a tumor suppressor that inhibits gastric cancer cell migration and invasion through repressing AKT phosphorylation. miR-28-5p may therefore represent a potential biomarker for the prognosis of gastric cancer and a novel therapeutic target in advanced gastric cancer.
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Affiliation(s)
- Fangtao Xiao
- Department of Surgical Oncology and General Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Zhenguo Cheng
- Department of Cell Biology, Key Laboratory of Cell Biology, Ministry of Public Health, and Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Pengliang Wang
- Department of Surgical Oncology and General Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Baoheng Gong
- Department of Surgical Oncology and General Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Hanwei Huang
- Department of Surgical Oncology and General Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yanan Xing
- Department of Surgical Oncology and General Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Funan Liu
- Department of Surgical Oncology and General Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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28
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Long non-coding RNAs: crucial regulators of gastrointestinal cancer cell proliferation. Cell Death Discov 2018; 4:50. [PMID: 29736267 PMCID: PMC5919979 DOI: 10.1038/s41420-018-0051-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 03/14/2018] [Accepted: 03/19/2018] [Indexed: 12/13/2022] Open
Abstract
Studies of long non-coding RNAs (lncRNAs) have been prevalent in the field of non-coding RNA regulation in recent years. LncRNAs exert crucial effects on malignant cell processes in the gastrointestinal system, including proliferation. Aberrant lncRNA expression, through both oncogenes and tumor suppressor genes, is instrumental to tumor cell proliferation. Here, we summarize the different molecular mechanisms and relevant signaling pathways through which multifarious lncRNAs regulate cell proliferation and we show that lncRNAs are potential biomarkers for gastrointestinal cancers.
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29
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Zhang YZ, Wang CF, Zhang LF. Cucurbitacin D impedes gastric cancer cell survival via activation of the iNOS/NO and inhibition of the Akt signalling pathway. Oncol Rep 2018; 39:2595-2603. [PMID: 29658590 PMCID: PMC5983931 DOI: 10.3892/or.2018.6361] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 03/21/2018] [Indexed: 12/19/2022] Open
Abstract
Cucurbitacin D (CuD), isolated from plants from the Cucurbitaceae family, is a potential antitumour agent since it inhibits proliferation, migration and metastasis of cancer cells. Despite CuD antitumour activity in cancer cells, the effects of CuD on gastric cancer cell lines remain unclear. The present study aimed to investigate the effects of CuD on gastric cancer cell growth and death. Human gastric cancer cell lines (AGS, SNU1 and Hs746T) were cultured and treated with different concentrations of CuD (0, 0.25, 0.5, 1 and 2 µM). Cell proliferation was assessed using Cell Counting Kit-8 assay. Oxidative stress was evaluated by generation of reactive oxygen species (ROS). Cell apoptosis was assessed by terminal deoxynucleotidyl transferase 2′-deoxyuridine-5′-triphosphate nick-end labelling (TUNEL) staining. Levels of intracellular Ca2+ and adenosine triphosphate (ATP) were also assessed. In the present study, CuD effectively inhibited cell proliferation, triggered ROS generation and induced apoptosis in gastric cancer cells (AGS, SNU1 and Hs746T). Treatment with CuD increased intracellular Ca2+ and ATP levels. CuD also stimulated the expression of inducible nitric oxide synthase (iNOS), which augmented nitric oxide production. In addition, CuD activated the mitochondrial apoptosis pathway, which increased the expression of Bax and the release of cleaved caspace-9 (C-caspase-9) and cytochrome c, decreased the expression of B-cell lymphoma 2 (Bcl-2). The mechanism of action of CuD involved the regulation of the protein kinase B/mechanistic target of rapamycin (Akt/mTOR) pathway. We confirmed the effects of CuD on gastric tumours via an in vivo xenograft gastric tumour model. In conclusion, CuD inhibited Akt and activated the iNOS pathway, leading to higher ROS and nitric oxide production, which accelerated gastric cancer cell apoptosis.
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Affiliation(s)
- Yan Zhen Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Chun Feng Wang
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Lian Feng Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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30
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He X, Liu Z, Xia Y, Xu J, Lv G, Wang L, Ma T, Jiang L, Mou Y, Jiang X, Ma J, Zhao Z, Ni H, Xu W, Ru G, Huang D, Tao H. HOXB7 overexpression promotes cell proliferation and correlates with poor prognosis in gastric cancer patients by inducing expression of both AKT and MARKs. Oncotarget 2018; 8:1247-1261. [PMID: 27901487 PMCID: PMC5352052 DOI: 10.18632/oncotarget.13604] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 11/11/2016] [Indexed: 12/23/2022] Open
Abstract
Increased expression of HOXB7 has been reported to correlate with the progression in many cancers. However, the specific mechanism by which it promotes the evolution of gastric cancer (GC) is poorly understood.In this study, we sought to investigate the role of HOXB7 in GC by assessing HOXB7 expression in patient tissue and its correlation to clinical characteristics. We found that GC tissues showed increased expression of HOXB7 and that the HOXB7 expression was significantly associated with Lauren classification, invasion depth, lymphatic metastasis and poor prognosis, and could serve as an independent prognostic factor. To further investigate the role of HOXB7 in GC, we generated stable GC cell lines and both over-expressed and knocked down HOXB7 expression. Over-expression of HOXB7 in GC cell lines enhanced cell proliferation, colony formation, migration and invasion ability, whereas the opposite trends were observed upon reduction of HOXB7 expression by knockdown. These findings were further supported by our in vivo studies which show that HOXB7 expression can affect the GC cells' subcutaneous growth and lung metastases. A Phospho-MAPK Array Kit was used to explore the possible mechanism of HOXB7-induced cell proliferation and invasion. We found that the AKT signaling pathway and the two members of the MAPK pathway, were involved in those promoting effects. In conclusion, our results showed that increased expression of HOXB7 might play an important role in promoting GC proliferation, migration and invasion by inducing both AKT and MAPK pathways, thus resulting in progression of, and poor prognosis in GC patients.
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Affiliation(s)
- Xujun He
- Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou, 310014, China
| | - Zhengchuang Liu
- Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou, 310014, China
| | - Yingjie Xia
- Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou, 310014, China
| | - Ji Xu
- Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou, 310014, China.,Department of Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China
| | - Guocai Lv
- Department of Laboratory Medicine, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China.,Key Laboratory of Clinical In vitro Diagnostic Techniques of Zhejiang Province, Hangzhou 310003, China
| | - Lu Wang
- Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou, 310014, China
| | - Tonghui Ma
- Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou, 310014, China
| | - Liping Jiang
- Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou, 310014, China
| | - Yiping Mou
- Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou, 310014, China.,Department of Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China
| | - Xiaoting Jiang
- Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou, 310014, China
| | - Jie Ma
- Department of Pathology, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China.,Department of Cardiothoracic Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China
| | - Zhongkuo Zhao
- Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou, 310014, China.,Department of Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China
| | - Haibin Ni
- Department of Surgery, Tongde Hospital of Zhejiang Province, Hangzhou 310012, Zhejiang, China
| | - Wenjuan Xu
- Department of Pathology, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China.,Department of Cardiothoracic Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China
| | - Guoqing Ru
- Department of Pathology, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China.,Department of Cardiothoracic Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China
| | - Dongsheng Huang
- Department of Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China
| | - Houquan Tao
- Key Laboratory of Gastroenterology of Zhejiang Province, Hangzhou, 310014, China.,Department of Surgery, Zhejiang Provincial People's Hospital, Hangzhou 310014, Zhejiang, China
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31
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Cai H, Chen X, Zhang J, Wang J. 18β-glycyrrhetinic acid inhibits migration and invasion of human gastric cancer cells via the ROS/PKC-α/ERK pathway. J Nat Med 2017; 72:252-259. [DOI: 10.1007/s11418-017-1145-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 10/17/2017] [Indexed: 12/11/2022]
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32
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Chiappini PBO, de Medeiros IUD, Lima LGC, Fregnani JH, Nonogaki S, da Costa WL, Coimbra FJF, Silva MJDBE, de Mello CAL, Pinto CAL, Begnami MD. Prognostic implications of phosphatidylinositol 3-kinase/AKT signaling pathway activation in gastric carcinomas. Arch Med Sci 2017; 13:1262-1268. [PMID: 29181056 PMCID: PMC5701681 DOI: 10.5114/aoms.2016.60394] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 01/20/2016] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION Activation of the phosphatidylinositol 3-kinase (PI3K)/AKT pathway plays a critical role in carcinogenesis and resistance to anticancer drugs. In this study, gastric carcinomas (GC) were investigated and statistical analyses were performed concerning the correlation between the clinicopathological features and activation of the PI3K/AKT pathway. MATERIAL AND METHODS Immunohistochemistry for p-AKT, p-mTOR and PTEN was performed in 239 GC and 200 non-neoplastic gastric tissues. The clinicopathological parameters were recorded from the medical charts. Statistical significance was defined by a p-value < 0.05. RESULTS High p-AKT expression was observed in 10% of the normal gastric tissue and in 90% of GC, and it was significantly associated with tumor size (p < 0.001), T3/T4 tumors (p < 0.001), and presence of metastases (p = 0.02). Similarly, p-mTOR positivity was found in GC cells, but not in the normal gastric mucosa, and was correlated with perineural invasion (p = 0.02) and T3/T4 tumors (p = 0.03). On the other hand, PTEN expression was weak and focal in the tumor cells, while in the normal gastric tissue this staining was strong and diffuse. Importantly, the expression of p-mTOR and PTEN was associated with overall survival. CONCLUSIONS The results of the present study, characterized by the loss of PTEN expression and higher expression of p-AKT and p-mTOR in the majority of tumor cells, apparently are implicated in the carcinogenesis and progression of GC. The identification of p-mTOR and PTEN expression as prognostic factors corroborates the identification and use of potential target drugs that could be more efficient for the treatment of these patients.
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33
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Liu Y, Zhang C, Zhao L, Du N, Hou N, Song T, Huang C. APPL1 promotes the migration of gastric cancer cells by regulating Akt2 phosphorylation. Int J Oncol 2017; 51:1343-1351. [PMID: 28902365 DOI: 10.3892/ijo.2017.4121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 08/25/2017] [Indexed: 11/06/2022] Open
Abstract
As a multifunctional adaptor protein, APPL1 (adaptor protein containing pleckstrin homology domain, phosphotyrosine binding domain and a leucine zipper motif 1) is overexpressed in many cancers, and has been implicated in tumorigenesis and tumor progression. The present study investigated the expression of APPL1 in gastric carcinoma and the function in regulating cell migration. We investigated the expression of APPL1 in gastric carcinoma based upon The Cancer Genome Atlas (TCGA) database. The expression of APPL1 in collected gastric carcinoma tissues and cultured cells was measured by qRT-PCR and western blot analysis. Transwell assay and wound healing assay were used to analyze the effects of APPL1 on tumor cell migration. The statistical results based upon TCGA database showed significantly higher expression of APPL1 in gastric carcinoma compared to adjacent normal tissues, and we confirmed these findings by measuring APPL1 expression in collected gastric carcinoma tissues and cultured cells. The results of transwell assay and wound healing assay showed that when APPL1 was silenced by siRNA, cell migration was inhibited and overexpression of APPL1 promoted migration. Western blot results demonstrated that changes in several mesenchymal markers were consistent with the observed reduction or enhancement of cell migration. Importantly, the expression of APPL1 significantly affected the phosphorylation of Akt2. In addition, MMP2 and MMP9, downstream effectors of Akt2 changed accordingly, which is a critical requirement for Akt2-mediated cell migration. The results demonstrate an important new function of APPL1 in regulating cell migration through a mechanism that depends on Akt2 phosphorylation.
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Affiliation(s)
- Yingxun Liu
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, P.R. China
| | - Chunli Zhang
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, P.R. China
| | - Lingyu Zhao
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, P.R. China
| | - Ning Du
- Department of Oncology Surgery, The First Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Ni Hou
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, P.R. China
| | - Tusheng Song
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, P.R. China
| | - Chen Huang
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, P.R. China
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Zhuang S, Jian YM, Sun YN. Inhibition of N-methyl-N-nitrosourea-induced gastric tumorigenesis by Liuwei Dihuang Pill in db/db mice. World J Gastroenterol 2017; 23:4233-4242. [PMID: 28694663 PMCID: PMC5483497 DOI: 10.3748/wjg.v23.i23.4233] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/30/2017] [Accepted: 05/09/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the inhibitory effect of Liuwei Dihuang Pill (LDP) on gastric tumorigenesis induced by N-methyl-N-nitrosourea (MNU) in diabetic mice.
METHODS Four-week-old mice were divided into four groups: A, 12 db/m mice treated with MNU and saline, as the non-diabetic control; B, 12 db/db mice treated with MNU and saline, as the diabetic control; C, 12 db/db mice treated with MNU and metformin, as the positive control; and D, 12 db/db mice treated with MNU and LDP. MNU was administrated for 20 wk to induce gastric carcinogenesis. LDP was administrated for 10 wk for improvement of insulin resistance. Body weight and food intake were measured every week. Blood samples were collected for assays of fasting blood glucose, insulin, insulin-like growth factor (IGF)-1, adiponectin and leptin. Stomach tissues were collected for histopathological analysis, immunohistochemical staining of Ki67, quantitative reverse transcription-polymerase chain reaction and western blotting.
RESULTS The incidence of MNU-induced gastric dysplasia was significantly elevated in diabetic (db/db) mice relative to the control (db/m) mice. The incidence of gastric dysplasia was significantly reduced by LDP with suppression of cell proliferation, as demonstrated by a decrease in Ki67 staining. Hyperglycemia, hyperinsulinemia and serum IGF-1 were inhibited by LDP. Expression of IGF-1 and insulin receptor mRNAs was decreased, phosphorylation of IGF-1 receptor and AKT protein was reduced in the stomach tissues by LDP. In addition, adiponectin was increased and leptin was decreased in the serum by LDP.
CONCLUSION LDP decreased risk of gastric dysplasia in type 2 diabetic mice by down-regulation of IGF and insulin activity and correction of adipokines disorders.
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Barat S, Chen X, Cuong Bui K, Bozko P, Götze J, Christgen M, Krech T, Malek NP, Plentz RR. Gamma-Secretase Inhibitor IX (GSI) Impairs Concomitant Activation of Notch and Wnt-Beta-Catenin Pathways in CD44 + Gastric Cancer Stem Cells. Stem Cells Transl Med 2017; 6:819-829. [PMID: 28186678 PMCID: PMC5442767 DOI: 10.1002/sctm.16-0335] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 09/19/2016] [Accepted: 10/05/2016] [Indexed: 02/06/2023] Open
Abstract
Cancer stem cells (CSC) are associated with tumor resistance and are characterized in gastric cancer (GC). Studies have indicated that Notch and wnt-beta-catenin pathways are crucial for CSC development. Using CD44+ CSCs, we investigated the role of these pathways in GC carcinogenesis. We performed cell proliferation, wound healing, invasion, tumorsphere, and apoptosis assays. Immunoblot analysis of downstream signaling targets of Notch and wnt-beta-catenin were tested after gamma-secretase inhibitor IX (GSI) treatment. Immunohistochemistry, immunofluorescence, and Fluorescence activated cell sorting (FACS) were used to determine CD44 and Hairy enhancer of split-1 (Hes1) expression in human GC tissues. CD44+ CSCs were subcutaneously injected into NMR-nu/nu mice and treated with vehicle or GSI. GC patients with expression of CD44 and Hes1 showed overall reduced survival. CD44+ CSCs showed high expression of Hes1. GSI treatment showed effective inhibition of cell proliferation, migration, invasion, tumor sphere formation of CD44+ CSCs, and induced apoptosis. Importanly, Notch1 was found to be important in mediating a crosstalk between Notch and wnt-beta-catenin in CD44+ CSCs. Our study highlights a crosstalk between Notch and wnt-beta-catenin in gastric CD44+ CSCs. Expression of CD44 and Hes1 is associated with patient overall survival. GSI could be an alternative drug to treat GC. Stem Cells Translational Medicine 2017;6:819-829.
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Affiliation(s)
- Samarpita Barat
- Department of Internal Medicine I, Medical University Hospital, Tübingen, Germany
| | - Xi Chen
- Department of Internal Medicine I, Medical University Hospital, Tübingen, Germany
| | - Khac Cuong Bui
- Department of Internal Medicine I, Medical University Hospital, Tübingen, Germany
| | - Przemyslaw Bozko
- Department of Internal Medicine I, Medical University Hospital, Tübingen, Germany
| | - Julian Götze
- Department of Internal Medicine I, Medical University Hospital, Tübingen, Germany
| | | | - Till Krech
- Institute of Pathology, Universitötsklinik Hamburg Eppendorf, Hamburg, Germany
| | - Nisar P Malek
- Department of Internal Medicine I, Medical University Hospital, Tübingen, Germany
| | - Ruben R Plentz
- Department of Internal Medicine I, Medical University Hospital, Tübingen, Germany
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Guo C, Chen WD, Wang YD. TGR5, Not Only a Metabolic Regulator. Front Physiol 2016; 7:646. [PMID: 28082913 PMCID: PMC5183627 DOI: 10.3389/fphys.2016.00646] [Citation(s) in RCA: 146] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 12/09/2016] [Indexed: 12/29/2022] Open
Abstract
G-protein-coupled bile acid receptor, Gpbar1 (TGR5), is a member of G-protein-coupled receptor (GPCR) superfamily. High levels of TGR5 mRNA were detected in several tissues such as small intestine, stomach, liver, lung, especially in placenta and spleen. TGR5 is not only the receptor for bile acids, but also the receptor for multiple selective synthetic agonists such as 6α-ethyl-23(S)-methyl-cholic acid (6-EMCA, INT-777) and a series of 4-benzofuranyloxynicotinamde derivatives to regulate different signaling pathways such as nuclear factor κB (NF-κB), AKT, and extracellular signal-regulated kinases (ERK). TGR5, as a metabolic regulator, is involved in energy homeostasis, bile acid homeostasis, as well as glucose metabolism. More recently, our group and others have extended the functions of TGR5 to more than metabolic regulation, which include inflammatory response, cancer and liver regeneration. These findings highlight TGR5 as a potential drug target for different diseases. This review summarizes the basic information of TGR5 and its new functions.
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Affiliation(s)
- Cong Guo
- State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology Beijing, China
| | - Wei-Dong Chen
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan UniversityKaifeng, China; Key Laboratory of Molecular Pathology, School of Basic Medical Science, Inner Mongolia Medical UniversityHohhot, China
| | - Yan-Dong Wang
- State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology Beijing, China
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Shi J, Zhang Y, Jin N, Li Y, Wu S, Xu L. MicroRNA-221-3p Plays an Oncogenic Role in Gastric Carcinoma by Inhibiting PTEN Expression. Oncol Res 2016; 25:523-536. [PMID: 27712596 PMCID: PMC7841127 DOI: 10.3727/096504016x14756282819385] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Gastric carcinoma is one of the most common malignancies in men, and microRNA plays a critical role in regulating the signaling networks of gastric carcinoma tumorigenesis and metastasis. We first report the functional characteristics of miR-221-3p in gastric carcinoma. Quantification in gastric carcinoma cell lines and tumor samples reveals significantly increasing miR-221-3p expression. Moreover, a high level of miR-221-3p is correlated with a poor prognosis for gastric carcinoma patients. Ectopic miR-221-3p expression significantly promotes gastric carcinoma cell proliferation, invasion, and sphere formation, while silencing miR-221-3p significantly inhibits these abilities in gastric carcinoma cells. Tests in vivo showed that miR-221-3p significantly promotes tumor growth in xenograft mouse models. In this study, we reveal that miR-221-3p targets PTEN mRNA and downregulates PTEN, which is the possible mechanism of miR-221-3p-induced oncogenic properties. Collectively, we reveal a critical role for miR-221-3p in gastric carcinoma development and progression.
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Affiliation(s)
- Jianping Shi
- Department of Digestion, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, P.R. China
| | - Yi Zhang
- Department of Digestion, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, P.R. China
| | - Nuyun Jin
- Department of Digestion, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, P.R. China
| | - Yuqin Li
- Department of Digestion, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, P.R. China
| | - Shengtian Wu
- Department of Digestion, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, P.R. China
| | - Leiming Xu
- Department of Digestion, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, P.R. China
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Berberine suppressed epithelial mesenchymal transition through cross-talk regulation of PI3K/AKT and RARα/RARβ in melanoma cells. Biochem Biophys Res Commun 2016; 479:290-296. [DOI: 10.1016/j.bbrc.2016.09.061] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 09/13/2016] [Indexed: 11/24/2022]
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Gastrointestinal Factor GDDR Attenuates Epithelial-Mesenchymal Transition in Gastric Cancer via Inhibiting AKT Signal. Dig Dis Sci 2016; 61:1941-9. [PMID: 27017226 DOI: 10.1007/s10620-016-4115-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 03/04/2016] [Indexed: 12/09/2022]
Abstract
BACKGROUND The gastric dramatic down-related gene (GDDR) is an abundantly expressed secretory protein in normal gastric epithelia, while its expression is distinctly decreased in gastric cancer. However, the role of GDDR in gastric cancer remains poorly understood. AIMS This study aims to detect the expression and clinical significance of GDDR in gastric cancer and investigate its effects on epithelial-mesenchymal transition. METHODS The expression of GDDR in gastric cancer was examined by immunohistochemistry, immunoblotting, and Western blotting. The relationships between GDDR expression and clinicopathological factors were evaluated. The effects of GDDR on epithelial-mesenchymal transition of gastric cancer cells were investigated in vitro. RESULTS GDDR was absent in gastric cancer tissue or dramatically downregulated in gastric cancer cell lines. Loss of GDDR expression in gastric cancer was strongly correlated with clinicopathological factors, such as tumor differentiation (p = 0.037), T stage (p < 0.001), lymph node metastasis (p = 0.008) and TNM stage (p < 0.001). Patients with decreased GDDR expression presented shortened overall survival (p = 0.033). Functional studies demonstrated that GDDR elevation augmented cell-cell adhesion and suppressed cell motility, concomitant with increased expression of E-cadherin and decreased expression of β-catenin and vimentin. Conversely, GDDR depletion increased cell motility, concomitant with decreased expression of E-cadherin and increased expression of β-catenin and vimentin. Moreover, GDDR had an inhibitory effect on PI3K/Akt signaling pathway. CONCLUSIONS Our findings suggested that GDDR expression was significantly associated with the progression of gastric cancer and GDDR may function as a tumor suppressor via inhibiting the epithelial-mesenchymal transition.
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Zhao H, Zhao D, Jin H, Li H, Yang X, Zhuang L, Liu T. Bufalin reverses intrinsic and acquired drug resistance to cisplatin through the AKT signaling pathway in gastric cancer cells. Mol Med Rep 2016; 14:1817-22. [PMID: 27357249 DOI: 10.3892/mmr.2016.5426] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Accepted: 04/07/2016] [Indexed: 11/06/2022] Open
Abstract
Cisplatin is the most common chemotherapeutic agent for gastric cancer (GC), however it activates AKT, which contributes to intrinsic and acquired resistance. Bufalin, a traditional Chinese medicine, shows significant anticancer activity by inhibiting the AKT pathway. It was therefore hypothesized that bufalin could counteract cisplatin resistance in GC cells. SGC7901, MKN‑45 and BGC823 human GC cells were cultured under normoxic and hypoxic conditions. Effects of cisplatin and bufalin on GC cells were measured by a cell counting kit, apoptosis was analyzed by flow cytometry, and immunoblotting was used to detect proteins associated with the AKT signaling pathway. It was demonstrated that bufalin synergized with cisplatin to inhibit proliferation and promote apoptosis of GC cells by diminishing the activation of cisplatin-induced AKT under normoxic and hypoxic conditions. Bufalin also inhibits cisplatin-activated molecules downstream of AKT that affect proliferation and apoptosis, including glycogen synthase kinase, mammalian target of rapamycin, ribosomal protein S6 Kinase and eukaryotic translation initiation factor-4E-binding protein-1. To investigate acquired cisplatin resistance, a cisplatin‑resistant cell line SGC7901‑CR was used. It was demonstrated that bufalin reversed acquired cisplatin resistance and significantly induced apoptosis through the AKT pathway. These results imply that bufalin could extend the therapeutic effect of cisplatin on GC cells when administered in combination.
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Affiliation(s)
- Hongyan Zhao
- Department of Gastroenterology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Dali Zhao
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Huilin Jin
- Department of Gastroenterology, The Fourth Hospital of Harbin, Harbin, Heilongjiang 150026, P.R. China
| | - Hongwei Li
- Department of Gastroenterology, The Fourth Hospital of Harbin, Harbin, Heilongjiang 150026, P.R. China
| | - Xiaoying Yang
- Department of Gastroenterology, The Fourth Hospital of Harbin, Harbin, Heilongjiang 150026, P.R. China
| | - Liwei Zhuang
- Department of Gastroenterology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Tiefu Liu
- Department of Gastroenterology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
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Hu QL, Wang HB, Yang M. Significance of expression of INPP4B in gastric cancer. Shijie Huaren Xiaohua Zazhi 2016; 24:2478-2484. [DOI: 10.11569/wcjd.v24.i16.2478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the expression of inositol polyphosphate-4-phosphatase, type II (INPP4B) in gastric cancer, and to analyze its relationship with clinical and pathological characteristics.
METHODS: The expression of INPP4B mRNA and protein in 50 gastric cancer tissues and matched tumor-adjacent normal tissues was detected by quantitative real-time PCR (qRT-PCR) and immunohistochemistry (IHC), respectively. The relationship between INPP4B expression and clinical and pathological characteristics was then analyzed.
RESULTS: INPP4B mRNA expression was significantly lower in gastric cancer tissue than in adjacent normal tissues (P < 0.01). The expression of INPP4B protein in gastric cancer tissues was also significantly lower compared with adjacent normal tissues (28.0% vs 82.0%, P < 0.01). The expression of INPP4B mRNA and protein was significantly related to tumor differentiation, lymph node metastasis and TNM stage in GC (P < 0.05), but not to gender, age or tumor size (P > 0.05).
CONCLUSION: Both INPP4B protein and mRNA are down-regulated in gastric cancer, and its expression significantly correlates with tumor differentiation, lymph node metastasis and TNM stage. INPP4B may be a tumor suppressor gene for gastric cancer.
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Zhai JS, Song JG, Zhu CH, Wu K, Yao Y, Li N. Expression of APPL1 is correlated with clinicopathologic characteristics and poor prognosis in patients with gastric cancer. ACTA ACUST UNITED AC 2016; 23:e95-e101. [PMID: 27122990 DOI: 10.3747/co.23.2775] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Although appl1 is overexpressed in many cancers, its status in gastric cancer (gc) is not known. In the present study, we used relevant pathologic and clinical data to investigate appl1 expression in patients with gc. METHODS In 47 gc and 27 non-gc surgical specimens, immunohistochemistry was used to detect the expression of appl1, and reverse-transcriptase polymerase chain reaction (rt-pcr) was used to detect messenger rna (mrna). A scatterplot visualized the relationship between survival time and mrna expression in gc patients. The log-rank test and other survival statistics were used to determine the association of appl1 expression with the pathologic features of the cancer and clinical outcomes. RESULTS In gc, appl1 was expressed in 28 of 47 specimens (59.6%), and in non-gc, it was expressed in 7 of 23 specimens (30.4%, p < 0.05). The expression of mrna in gc was 0.82 [95% confidence interval (ci): 0.78 to 0.86], and in non-gc, it was 0.73 (95% ci: 0.69 to 0.77; p < 0.05). Immunohistochemistry demonstrated that, in gc, appl1 expression was correlated with depth of infiltration (p = 0.005), lymph node metastasis (p = 0.017), and TNM stage (p = 0.022), but not with pathologic type (p = 0.41). Testing by rt-pcr demonstrated that, in gc, appl1 mrna expression was correlated with depth of infiltration (p = 0.042), lymph node metastasis (p = 0.031), and TNM stage (p = 0.04), but again, not with pathologic type (p = 0.98). The correlation coefficient between survival time and mrna expression was -0.83 (p < 0.01). Overexpression of appl1 protein (hazard ratio: 3.88; 95% ci: 1.07 to 14.09) and mrna (hazard ratio: 4.23; 95% ci: 3.09 to 15.11) was a risk factor for death in patients with gc. CONCLUSIONS Expression of appl1 is increased in gc. Overexpression is prognostic for a lethal outcome.
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Affiliation(s)
- J S Zhai
- Postgraduate Team, Chinese pla General Hospital, Medical School of Chinese pla, Beijing, P.R.C.;; Department of Gastroenterology, Chinese pla 309 Hospital, Beijing, P.R.C
| | - J G Song
- Department of Gastroenterology, Chinese pla 309 Hospital, Beijing, P.R.C
| | - C H Zhu
- Department of Gastroenterology, Chinese pla 309 Hospital, Beijing, P.R.C
| | - K Wu
- Department of Gastroenterology, Chinese pla 309 Hospital, Beijing, P.R.C
| | - Y Yao
- Department of Gastroenterology, Chinese pla 309 Hospital, Beijing, P.R.C
| | - N Li
- Postgraduate Team, Chinese pla General Hospital, Medical School of Chinese pla, Beijing, P.R.C.;; Department of Gastroenterology, Chinese pla 309 Hospital, Beijing, P.R.C
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Wang J, Hu W, Wu X, Wang K, Yu J, Luo B, Luo G, Wang W, Wang H, Li J, Wen J. CXCR1 promotes malignant behavior of gastric cancer cells in vitro and in vivo in AKT and ERK1/2 phosphorylation. Int J Oncol 2016; 48:2184-96. [PMID: 26983663 DOI: 10.3892/ijo.2016.3428] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 02/24/2016] [Indexed: 02/07/2023] Open
Abstract
CXCR1 is a member of the chemokine receptor family, which was reported to play an important role in several cancers. The present study investigated the influence of CXCR1 stable knockdown or overexpression on the malignant behavior of gastric cancer cells in vitro and in vivo and the potential mechanisms. MKN45 and BGC823 cells were stably transfected with plasmid pYr-1.1-CXCR1-shRNA (knockdown) and pIRES2-ZsGreen1-CXCR1 (overexpression), respectively. Malignant behavior was evaluated in vitro for changes in proliferation by MTT and colony forming assays; cell cycle and apoptosis by flow cytometry; and migration and invasion using transwell and wound-healing assays. Proliferation, cell cycle, apoptosis, migration and invasion-related signaling molecule expression were measured by real-time RT-PCR and western blot analysis. CXCR1 knockdown and overexpressing xenografts were monitored for in vivo tumor growth. Stable knockdown of CXCR1 inhibited MKN45 cell proliferation, migration and invasion, but were reversed in BGC823 cells stably overexpressing CXCR1. In addition, MKN45 cells stably transfected with CXCR1 shRNA inhibited AKT and ERK1/2 phosphorylation, protein expression of cyclin D1, EGFR, VEGF, MMP-9, MMP-2 and Bcl-2, and increased protein expression of Bax and E-cadherin (all P<0.05). In vivo CXCR1-shRNA-MKN45 cells transplanted into nude mice formed smaller tumors than non-transfected or scrambled-shRNA cells (both P<0.05). In contrast BGC823 cells overexpressing CXCR1 formed larger tumors in mice than cells carrying an empty expression plasmid or non-transfected cells (both P<0.05). CXCR1 promoted gastric cancer cell proliferation, migration and invasion. The present study provides preclinical data to support CXCR1 as a novel therapeutic target for gastric cancer.
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Affiliation(s)
- Junpu Wang
- Department of Pathology, Xiang-ya Hospital, Central South University, Changsha, Hunan 410083, P.R. China
| | - Wanming Hu
- Department of Pathology, School of Basic Medicine, Central South University, Changsha, Hunan 410083, P.R. China
| | - Xiaoying Wu
- Department of Pathology, Xiang-ya Hospital, Central South University, Changsha, Hunan 410083, P.R. China
| | - Kuansong Wang
- Department of Pathology, Xiang-ya Hospital, Central South University, Changsha, Hunan 410083, P.R. China
| | - Jun Yu
- Department of Neurology, Third Xiang-ya Hospital, Central South University, Changsha, Hunan 410083, P.R. China
| | - Baihua Luo
- Department of Pathology, Xiang-ya Hospital, Central South University, Changsha, Hunan 410083, P.R. China
| | - Gengqiu Luo
- Department of Pathology, Xiang-ya Hospital, Central South University, Changsha, Hunan 410083, P.R. China
| | - Weiyuan Wang
- Department of Pathology, School of Basic Medicine, Central South University, Changsha, Hunan 410083, P.R. China
| | - Huiling Wang
- Department of Pathology, School of Basic Medicine, Central South University, Changsha, Hunan 410083, P.R. China
| | - Jinghe Li
- Department of Pathology, Xiang-ya Hospital, Central South University, Changsha, Hunan 410083, P.R. China
| | - Jifang Wen
- Department of Pathology, Xiang-ya Hospital, Central South University, Changsha, Hunan 410083, P.R. China
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Ye Y, Ge YM, Xiao MM, Guo LM, Li Q, Hao JQ, Da J, Hu WL, Zhang XD, Xu J, Zhang LJ. Suppression of SHIP2 contributes to tumorigenesis and proliferation of gastric cancer cells via activation of Akt. J Gastroenterol 2016. [PMID: 26201869 DOI: 10.1007/s00535-015-1101-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND The Src homology 2-containing inositol 5-phosphatase 2 (SHIP2) is implicated in diabetes, arthrosclerosis, and cancer. However, the role of SHIP2 in human gastric cancer remains unclear. METHODS The expression levels of SHIP2 in gastric cancer tissues, a panel of gastric cancer cell lines, and normal gastric epithelial cells were analyzed by immunohistochemistry (IHC), Western blot, and real-time quantitative RT-PCR (qRT-PCR). Gastric cancer cells with either overexpressed SHIP2 or co-overexpressed SHIP2 and Akt were analyzed to determine cell proliferation, colony formation, apoptosis, cell migration, and invasion assays. Normal gastric epithelial cells with knockdown SHIP2 or co-knockdown SHIP2 and Akt were subjected by anchorage-independent growth assays. The effect of SHIP2 on tumor growth in vivo was detected by xenograft tumorigenesis assays. RESULTS SHIP2 was commonly downregulated in gastric cancer compared with normal gastric mucosa, and overexpression of SHIP2 inhibited cell proliferation, induced apoptosis, suppressed cell motility and invasion in gastric cancer cells in vitro, and retarded the growth of xenograft gastric tumors in vivo, while knockdown of SHIP2 in normal gastric epithelial cells promoted anchorage-independent growth. Moreover, overexpression of SHIP2 inactivated Akt, and upregulated p21, p27, and the pro-apoptotic protein Bim. Restoring Akt activation in gastric cancer cells largely blocked the inhibition of PI3K/Akt signaling by SHIP2 and reversed the inhibitory effect of SHIP2 on tumorigenesis and proliferation. CONCLUSIONS This study demonstrates, for the first time, that SHIP2 is frequently downregulated in gastric cancer, and reduced SHIP2 expression promotes tumorigenesis and proliferation of gastric cancer via activation of the PI3K/Akt signaling.
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Affiliation(s)
- Yan Ye
- Department of Immunology, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Yan Mei Ge
- Department of Immunology, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Miao Miao Xiao
- Department of Immunology, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Li Mei Guo
- Department of Immunology, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Qun Li
- Department of Immunology, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Ji Qing Hao
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
| | - Jie Da
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
| | - Wang Lai Hu
- Department of Immunology, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Xu Dong Zhang
- School of Medicine and Public Health, The University of Newcastle, Newcastle, NSW, 2308, Australia
| | - Jiegou Xu
- Department of Immunology, Anhui Medical University, Hefei, 230032, Anhui, China.
| | - Lin Jie Zhang
- Department of Immunology, Anhui Medical University, Hefei, 230032, Anhui, China.
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Tu CC, Huang CY, Cheng WL, Hung CS, Chang YJ, Wei PL. Silencing A7-nAChR levels increases the sensitivity of gastric cancer cells to ixabepilone treatment. Tumour Biol 2016; 37:9493-501. [PMID: 26790437 DOI: 10.1007/s13277-015-4751-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 12/29/2015] [Indexed: 12/26/2022] Open
Abstract
Gastric cancer is an important health issue worldwide. Currently, improving the therapeutic efficacy of chemotherapy drugs is an important goal of cancer research. Alpha-7 nicotine acetylcholine receptor (A7-nAChR) is the key molecule that mediates gastric cancer progression, metastasis, and therapy responses; however, the role of A7-nAChR in the therapeutic efficacy of ixabepilone remains unclear. A7-nAChR expression was silenced by small interfering RNA (siRNA) technology. The cytotoxicity of ixabepilone was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and ixabepilone-induced apoptosis was analyzed by flow cytometry and annexin V/propidium iodide (PI) apoptotic assay. The expression patterns of anti-apoptotic proteins (AKT, phospho-AKT, Mcl-1, and Bcl-2) and pro-apoptotic proteins (Bad and Bax) were determined by western blot. Our study found that A7-nAChR knockdown (A7-nAChR-KD) AGS cells were more sensitive to ixabepilone administration than scrambled control AGS cells. We found that A7-nAChR knockdown enhanced ixabepilone-induced cell death as evidenced by the increased number of annexin V-positive (apoptotic) cells. After scrambled control and A7-nAChR-KD cells were treated with ixabepilone, we found that pAKT and AKT levels were significantly reduced in both groups of cells. The levels of Bcl-2 and the anti-apoptotic Mcl-1 isoform increased dramatically after ixabepilone treatment in scrambled control cells but not in A7-nAChR-KD cells. Bad and Bax levels did not change between the treatment group and vehicle group in both A7-nAChR-KD and scrambled control cells, whereas cleaved PARP levels dramatically increased in ixabepilone-treated A7-nAChR-KD cells. Our results demonstrated that knockdown of A7-nAChR enhanced the sensitivity of gastric cancer cells to ixabepilone administration. Thus, the A7-nAChR expression level in patients with gastric cancer may be a good indicator of ixabepilone sensitivity.
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Affiliation(s)
- Chao-Chiang Tu
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Division of General Surgery, Department of Surgery, New Taipei Hospital, Taipei, Taiwan
| | - Chien-Yu Huang
- Division of General Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan
| | - Wan-Li Cheng
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chin-Sheng Hung
- Cancer Research Center, Taipei Medical University Hospital, Taipei Medical University, 250 Wu-Xin Street, Taipei City, 110, Taiwan
| | - Yu-Jia Chang
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
- Cancer Research Center, Taipei Medical University Hospital, Taipei Medical University, 250 Wu-Xin Street, Taipei City, 110, Taiwan.
| | - Po-Li Wei
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
- Division of General Surgery, Department of Surgery, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan.
- Cancer Research Center, Taipei Medical University Hospital, Taipei Medical University, 250 Wu-Xin Street, Taipei City, 110, Taiwan.
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Interactions between Autophagy and Bacterial Toxins: Targets for Therapy? Toxins (Basel) 2015; 7:2918-58. [PMID: 26248079 PMCID: PMC4549733 DOI: 10.3390/toxins7082918] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 07/27/2015] [Accepted: 07/28/2015] [Indexed: 01/07/2023] Open
Abstract
Autophagy is a physiological process involved in defense mechanisms for clearing intracellular bacteria. The autophagic pathway is finely regulated and bacterial toxins interact with this process in a complex manner. Bacterial toxins also interact significantly with many biochemical processes. Evaluations of the effects of bacterial toxins, such as endotoxins, pore-forming toxins and adenylate cyclases, on autophagy could support the development of new strategies for counteracting bacterial pathogenicity. Treatment strategies could focus on drugs that enhance autophagic processes to improve the clearance of intracellular bacteria. However, further in vivo studies are required to decipher the upregulation of autophagy and potential side effects limiting such approaches. The capacity of autophagy activation strategies to improve the outcome of antibiotic treatment should be investigated in the future.
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