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Hwang SH, Kim HG, Lee M. Paradoxical downregulation of LPAR3 exerts tumor-promoting activity through autophagy induction in Ras-transformed cells. BMC Cancer 2022; 22:969. [PMID: 36088312 PMCID: PMC9463806 DOI: 10.1186/s12885-022-10053-0] [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: 12/09/2021] [Accepted: 09/02/2022] [Indexed: 11/23/2022] Open
Abstract
Background Lysophosphatidic acid receptor 3 (LPAR3) is coupled to Gαi/o and Gα11/q signaling. Previously, we reported that LPAR3 is highly methylated in carcinogen-induced transformed cells. Here, we demonstrate that LPAR3 exhibits malignant transforming activities, despite being downregulated in transformed cells. Methods The LPAR3 knockout (KO) in NIH 3 T3 and Bhas 42 cells was established using the CRISPR/Cas9 system. Both RT-PCR and DNA sequencing were performed to confirm the KO of LPAR3. The cellular effects of LPAR3 KO were further examined by WST-1 assay, immunoblotting analysis, transwell migration assay, colony formation assay, wound scratch assday, in vitro cell transformation assay, and autophagy assay. Results In v-H-ras-transformed cells (Ras-NIH 3 T3) with LPAR3 downregulation, ectopic expression of LPAR3 significantly enhanced the migration. In particular, LPAR3 knockout (KO) in Bhas 42 (v-Ha-ras transfected Balb/c 3 T3) and NIH 3 T3 cells caused a decrease in cell survival, transformed foci, and colony formation. LPAR3 KO led to the robust accumulation of LC3-II and autophagosomes and inhibition of autophagic flux by disrupting autophagosome fusion with lysosome. Conversely, autolysosome maturation proceeded normally in Ras-NIH 3 T3 cells upon LPAR3 downregulation. Basal phosphorylation of MEK and ERK markedly increased in Ras-NIH 3 T3 cells, whereas being significantly lower in LPAR3 KO cells, suggesting that increased MEK signaling is involved in autophagosome–lysosome fusion in Ras-NIH 3 T3 cells. Conclusions Paradoxical downregulation of LPAR3 exerts cooperative tumor-promoting activity with MEK activation through autophagy induction in Ras-transformed cells. Our findings have implications for the development of cancer chemotherapeutic approaches. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-022-10053-0.
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Wang S, Chen J, Guo XZ. KAI1/CD82 gene and autotaxin-lysophosphatidic acid axis in gastrointestinal cancers. World J Gastrointest Oncol 2022; 14:1388-1405. [PMID: 36160748 PMCID: PMC9412925 DOI: 10.4251/wjgo.v14.i8.1388] [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] [Received: 11/11/2021] [Revised: 01/06/2022] [Accepted: 07/22/2022] [Indexed: 02/05/2023] Open
Abstract
The KAI1/CD82 gene inhibits the metastasis of most tumors and is remarkably correlated with tumor invasion and prognosis. Cell metabolism dysregulation is an important cause of tumor occurrence, development, and metastasis. As one of the important characteristics of tumors, cell metabolism dysregulation is attracting increasing research attention. Phospholipids are an indispensable substance in the metabolism in various tumor cells. Phospholipid metabolites have become important cell signaling molecules. The pathological role of lysophosphatidic acid (LPA) in tumors was identified in the early 1990s. Currently, LPA inhibitors have entered clinical trials but are not yet used in clinical treatment. Autotaxin (ATX) has lysophospholipase D (lysoPLD) activity and can regulate LPA levels in vivo. The LPA receptor family and ATX/lysoPLD are abnormally expressed in various gastrointestinal tumors. According to our recent pre-experimental results, KAI1/CD82 might inhibit the migration and metastasis of cancer cells by regulating the ATX-LPA axis. However, no relevant research has been reported. Clarifying the mechanism of ATX-LPA in the inhibition of cancer metastasis by KAI1/CD82 will provide an important theoretical basis for targeted cancer therapy. In this paper, the molecular compositions of the KAI1/CD82 gene and the ATX-LPA axis, their physiological functions in tumors, and their roles in gastrointestinal cancers and target therapy are reviewed.
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Affiliation(s)
- Shuo Wang
- Department of Gastroenterology, General Hospital of Northern Theater Command, Shenyang 110840, Liaoning Province, China
| | - Jiang Chen
- Department of Gastroenterology, General Hospital of Northern Theater Command, Shenyang 110840, Liaoning Province, China
| | - Xiao-Zhong Guo
- Department of Gastroenterology, General Hospital of Northern Theater Command, Shenyang 110840, Liaoning Province, China
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Xiang H, Lu Y, Shao M, Wu T. Lysophosphatidic Acid Receptors: Biochemical and Clinical Implications in Different Diseases. J Cancer 2020; 11:3519-3535. [PMID: 32284748 PMCID: PMC7150451 DOI: 10.7150/jca.41841] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 02/25/2020] [Indexed: 12/21/2022] Open
Abstract
Lysophosphatidic acid (LPA, 1-acyl-2-hemolytic-sn-glycerol-3-phosphate) extracted from membrane phospholipid is a kind of simple bioactive glycophospholipid, which has many biological functions such as stimulating cell multiplication, cytoskeleton recombination, cell survival, drug-fast, synthesis of DNA and ion transport. Current studies have shown that six G-coupled protein receptors (LPAR1-6) can be activated by LPA. They stimulate a variety of signal transduction pathways through heterotrimeric G-proteins (such as Gα12/13, Gαq/11, Gαi/o and GαS). LPA and its receptors play vital roles in cancers, nervous system diseases, cardiovascular diseases, liver diseases, metabolic diseases, etc. In this article, we discussed the structure of LPA receptors and elucidated their functions in various diseases, in order to better understand them and point out new therapeutic schemes for them.
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Affiliation(s)
- Hongjiao Xiang
- Center of Chinese Medical Therapy and Systems Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yifei Lu
- Center of Chinese Medical Therapy and Systems Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Mingmei Shao
- Center of Chinese Medical Therapy and Systems Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Tao Wu
- Center of Chinese Medical Therapy and Systems Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
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Jinru XMS, Yu YMS, Bo JMD, Linxue QMD, Xian-Quan SP. Identification of Key Genes Between Lung Adenocarcinoma and Lung Squamous Cell Carcinoma by Bioinformatics Analysis. ADVANCED ULTRASOUND IN DIAGNOSIS AND THERAPY 2020. [DOI: 10.37015/audt.2020.200011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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5
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Autotaxin-Lysophosphatidic Acid: From Inflammation to Cancer Development. Mediators Inflamm 2017; 2017:9173090. [PMID: 29430083 PMCID: PMC5753009 DOI: 10.1155/2017/9173090] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 11/22/2017] [Indexed: 12/13/2022] Open
Abstract
Lysophosphatidic acid (LPA) is a ubiquitous lysophospholipid and one of the main membrane-derived lipid signaling molecules. LPA acts as an autocrine/paracrine messenger through at least six G protein-coupled receptors (GPCRs), known as LPA1–6, to induce various cellular processes including wound healing, differentiation, proliferation, migration, and survival. LPA receptors and autotaxin (ATX), a secreted phosphodiesterase that produces this phospholipid, are overexpressed in many cancers and impact several features of the disease, including cancer-related inflammation, development, and progression. Many ongoing studies aim to understand ATX-LPA axis signaling in cancer and its potential as a therapeutic target. In this review, we discuss the evidence linking LPA signaling to cancer-related inflammation and its impact on cancer progression.
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Takahashi K, Fukushima K, Fukushima N, Honoki K, Tsujiuchi T. Enhanced cellular functions through induction of LPA 2 by cisplatin in fibrosarcoma HT1080 cells. Mol Cell Biochem 2017; 431:29-35. [PMID: 28205098 DOI: 10.1007/s11010-017-2971-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 02/02/2017] [Indexed: 10/20/2022]
Abstract
Lysophosphatidic acid (LPA) is a simple biophysical lipid which interacts with at least six subtypes of G protein-coupled LPA receptors (LPA1-LPA6). In cancer cells, LPA signaling via LPA receptors is involved in the regulation of malignant properties, such as cell growth, motility, and invasion. The aim of this study was to assess whether LPA receptors regulate cellular functions of fibrosarcoma cells treated with anticancer drug. HT1080 cells were maintained by the stepwise treatment of cisplatin (CDDP) at a range of 0.01 to 1.0 µM for approximately 6 months. The cell motile and invasive activities of long-term CDDP-treated (HT-CDDP) cells were significantly stimulated by LPA treatment, while HT-CDDP cells in the static state showed the low cell motile and invasive activities in comparison with HT1080 cells. Since the expression level of LPAR2 gene was markedly elevated in HT-CDDP cells, LPA2 knockdown cells were generated from HT-CDDP cells. The cell motile and invasive activities of HT-CDDP cells were reduced by LPA2 knockdown. In colony assay, large-sized colonies formed by long-term CDDP treatment were suppressed by LPA2 knockdown. In addition, LPA2 knockdown cells reduced LPA production by autotaxin (ATX), correlating with ATX expression level. These results suggest that LPA signaling via LPA2 may play an important role in the regulation of cellular functions in HT1080 cells treated with CDDP.
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Affiliation(s)
- Kaede Takahashi
- Division of Cancer Biology and Bioinformatics, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiōsaka, Osaka, 577-8502, Japan
| | - Kaori Fukushima
- Division of Cancer Biology and Bioinformatics, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiōsaka, Osaka, 577-8502, Japan
| | - Nobuyuki Fukushima
- Division of Molecular Neurobiology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiōsaka, Osaka, 577-8502, Japan
| | - Kanya Honoki
- Department of Orthopedic Surgery, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8521, Japan
| | - Toshifumi Tsujiuchi
- Division of Cancer Biology and Bioinformatics, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiōsaka, Osaka, 577-8502, Japan.
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Fukushima K, Takahashi K, Yamasaki E, Onishi Y, Fukushima N, Honoki K, Tsujiuchi T. Lysophosphatidic acid signaling via LPA 1 and LPA 3 regulates cellular functions during tumor progression in pancreatic cancer cells. Exp Cell Res 2017; 352:139-145. [PMID: 28189636 DOI: 10.1016/j.yexcr.2017.02.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 02/06/2017] [Accepted: 02/07/2017] [Indexed: 12/22/2022]
Abstract
Lysophosphatidic acid (LPA) signaling via G protein-coupled LPA receptors exhibits a variety of biological effects, such as cell proliferation, motility and differentiation. The aim of this study was to evaluate the roles of LPA1 and LPA3 in cellular functions during tumor progression in pancreatic cancer cells. LPA1 and LPA3 knockdown cells were generated from PANC-1 cells. The cell motile and invasive activities of PANC-1 cells were inhibited by LPA1 and LPA3 knockdown. In gelatin zymography, LPA1 and LPA3 knockdown cells indicated the low activation of matrix metalloproteinase-2 (MMP-2) in the presence of LPA. Next, to assess whether LPA1 and LPA3 regulate cellular functions induced by anticancer drug, PANC-1 cells were treated with cisplatin (CDDP) for approximately 6 months. The cell motile and invasive activities of long-term CDDP treated cells were markedly higher than those of PANC-1 cells, correlating with the expression levels of LPAR1 and LPAR3 genes. In soft agar assay, the long-term CDDP treated cells formed markedly large sized colonies. In addition, the cell motile and invasive activities enhanced by CDDP were significantly suppressed by LPA1 and LPA3 knockdown as well as colony formation. These results suggest that LPA signaling via LPA1 and LPA3 play an important role in the regulation of cellular functions during tumor progression in PANC-1 cells.
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Affiliation(s)
- Kaori Fukushima
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Kaede Takahashi
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Eri Yamasaki
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Yuka Onishi
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Nobuyuki Fukushima
- Division of Molecular Neurobiology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Kanya Honoki
- Department of Orthopedic Surgery, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan
| | - Toshifumi Tsujiuchi
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan.
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Takahashi K, Fukushima K, Onishi Y, Inui K, Node Y, Fukushima N, Honoki K, Tsujiuchi T. Lysophosphatidic acid (LPA) signaling via LPA 4 and LPA 6 negatively regulates cell motile activities of colon cancer cells. Biochem Biophys Res Commun 2016; 483:652-657. [PMID: 27993681 DOI: 10.1016/j.bbrc.2016.12.088] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 12/13/2016] [Indexed: 12/14/2022]
Abstract
Lysophosphatidic acid (LPA) is an extracellular biological lipid and interacts with six subtypes of G protein-coupled LPA receptors (LPA1 to LPA6). LPA receptors exhibit a variety of cellular functions, depending on types of cancer cells. In this study, to assess the roles of LPA4 and LPA6 in cell growth and motile activities of colon cancer cells, LPA4 and LPA6 knockdown cells were established from DLD1 and HCT116 cells. LPA treatment increased the cell growth activities of LPA4 and LPA6 knockdown cells, compared with control cells. The cell motile activities of LPA4 and LPA6 knockdown cells were significantly higher than those of control cells. To evaluate the effects of LPA4 and LPA6 on cell motile activity induced by anticancer drug, long-term fluorouracil (5-FU) treated (DLD-5FU) cells were generated. The expression levels of LPAR1, LPAR4 and LPAR6 genes were significantly increased in DLD-5FU cells. DLD-5FU cells showed the high cell motile activity, compared with DLD1 cells. The increased cell motile activity was markedly stimulated by LPA4 and LPA6 knockdown. In contrast, the cell motile activity enhanced by 5-FU treatment was suppressed by LPA1 knockdown. These results suggest that LPA signaling via LPA4 and LPA6 negatively regulates the cell motile activities of DLD1 and HCT116 cells as well as long-term 5-FU treated cells.
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Affiliation(s)
- Kaede Takahashi
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Kaori Fukushima
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Yuka Onishi
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Karin Inui
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Yusuke Node
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Nobuyuki Fukushima
- Division of Molecular Neurobiology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Kanya Honoki
- Department of Orthopedic Surgery, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan
| | - Toshifumi Tsujiuchi
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan.
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9
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Hirane M, Ishii S, Tomimatsu A, Fukushima K, Takahashi K, Fukushima N, Honoki K, Tsujiuchi T. Different induction of LPA receptors by chemical liver carcinogens regulates cellular functions of liver epithelial WB-F344 cells. Mol Carcinog 2015; 55:1573-1583. [DOI: 10.1002/mc.22410] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 08/17/2015] [Accepted: 08/31/2015] [Indexed: 01/22/2023]
Affiliation(s)
- Miku Hirane
- Division of Molecular Oncology; Department of Life Science; Faculty of Science and Engineering, Kinki University; Kowakae, Higashiosaka Osaka Japan
| | - Shuhei Ishii
- Division of Molecular Oncology; Department of Life Science; Faculty of Science and Engineering, Kinki University; Kowakae, Higashiosaka Osaka Japan
| | - Ayaka Tomimatsu
- Division of Molecular Oncology; Department of Life Science; Faculty of Science and Engineering, Kinki University; Kowakae, Higashiosaka Osaka Japan
| | - Kaori Fukushima
- Division of Molecular Oncology; Department of Life Science; Faculty of Science and Engineering, Kinki University; Kowakae, Higashiosaka Osaka Japan
| | - Kaede Takahashi
- Division of Molecular Oncology; Department of Life Science; Faculty of Science and Engineering, Kinki University; Kowakae, Higashiosaka Osaka Japan
| | - Nobuyuki Fukushima
- Division of Molecular Neurobiology; Department of Life Science; Faculty of Science and Engineering, Kinki University; Kowakae, Higashiosaka Osaka Japan
| | - Kanya Honoki
- Department of Orthopedic Surgery; Nara Medical University; Kashihara Nara Japan
| | - Toshifumi Tsujiuchi
- Division of Molecular Oncology; Department of Life Science; Faculty of Science and Engineering, Kinki University; Kowakae, Higashiosaka Osaka Japan
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Ishii S, Hirane M, Fukushima K, Tomimatsu A, Fukushima N, Tsujiuchi T. Diverse effects of LPA4, LPA5 and LPA6 on the activation of tumor progression in pancreatic cancer cells. Biochem Biophys Res Commun 2015; 461:59-64. [PMID: 25849892 DOI: 10.1016/j.bbrc.2015.03.169] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 03/29/2015] [Indexed: 01/05/2023]
Abstract
Lysophosphatidic acid (LPA) is an extracellular biological lipid which interacts with G protein-coupled LPA receptors (LPA1 to LPA6). LPA signaling via LPA receptors mediates several cellular responses. In the present study, to assess the roles of LPA4, LPA5 and LPA6 in cellular functions of pancreatic cancer cells, we generated LPA receptor knockdown cells from PANC-1 cells (PANC-sh4, PANC-sh5 and PANC-sh6 cells, respectively). In cell motility assay, PANC-sh4 and PANC-sh5 cells enhanced the cell motile activities, compared with control cells. In contrast, the cell motile activity of PANC-sh6 cells was suppressed. The invasive activities of PANC-sh4 and PANC-sh5 cells were markedly stimulated, while PANC-sh6 cells showed the low invasive activity. In colony assay, PANC-sh4 and PANC-sh5 cells formed the large sized colonies, but not PANC-sh6 cells. When endothelial cells were incubated with supernatants from PANC-sh4 and PANC-sh5 cells, the cell motility and tube formation of endothelial cells were significantly induced, but not PANC-sh6 cells. These results suggest that the diverse roles of LPA4, LPA5 and LPA6 are involved in the activation of tumor progression in pancreatic cancer cells.
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Affiliation(s)
- Shuhei Ishii
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Miku Hirane
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Kaori Fukushima
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Ayaka Tomimatsu
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Nobuyuki Fukushima
- Division of Molecular Neurobiology, Department of Life Science, Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Toshifumi Tsujiuchi
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan.
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Araki M, Kitayoshi M, Dong Y, Hirane M, Ozaki S, Mori S, Fukushima N, Honoki K, Tsujiuchi T. Inhibitory effects of lysophosphatidic acid receptor-5 on cellular functions of sarcoma cells. Growth Factors 2014; 32:117-22. [PMID: 24798396 DOI: 10.3109/08977194.2014.911294] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Lysophosphatidic acid (LPA) is a bioactive lipid that interacts with G protein-coupled LPA receptors (LPA receptor-1 (LPA1) to LPA6). Here, we investigated the effects of LPA signaling via LPA5 on cellular functions of sarcoma cells by generating Lpar5 overexpressing and Lpar5 knockdown cells from rat osteosarcoma and malignant fibrous histiocytoma cells, respectively. The cell motility activity of Lpar5 overexpressing cells was significantly lower, while Lpar5 knockdown cells showed high cell motility, compared with respective controls. Gelatin zymography showed that LPA5 suppressed the activation of matrix metalloproteinase-2. LPA5 also inhibited the cell motility activity of endothelial cells, correlating with the expression levels of vascular endothelial growth factor genes. These results suggest that LPA signaling via LPA5 negatively regulates the cellular functions of rat sarcoma cells.
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12
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Lysophosphatidic acid receptor-5 negatively regulates cell motile and invasive activities of human sarcoma cell lines. Mol Cell Biochem 2014; 393:17-22. [DOI: 10.1007/s11010-014-2042-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 03/14/2014] [Indexed: 01/02/2023]
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13
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Dong Y, Hirane M, Araki M, Fukushima N, Tsujiuchi T. Lysophosphatidic acid receptor-5 negatively regulates cellular responses in mouse fibroblast 3T3 cells. Biochem Biophys Res Commun 2014; 446:585-9. [PMID: 24632199 DOI: 10.1016/j.bbrc.2014.03.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 03/04/2014] [Indexed: 12/27/2022]
Abstract
Lysophosphatidic acid (LPA) signaling via G protein-coupled LPA receptors (LPA1-LPA6) mediates a variety of biological functions, including cell migration. Recently, we have reported that LPA1 inhibited the cell motile activities of mouse fibroblast 3T3 cells. In the present study, to evaluate a role of LPA5 in cellular responses, Lpar5 knockdown (3T3-L5) cells were generated from 3T3 cells. In cell proliferation assays, LPA markedly stimulated the cell proliferation activities of 3T3-L5 cells, compared with control cells. In cell motility assays with Cell Culture Inserts, the cell motile activities of 3T3-L5 cells were significantly higher than those of control cells. The activity levels of matrix metalloproteinases (MMPs) were measured by gelatin zymography. 3T3-L5 cells stimulated the activation of Mmp-2, correlating with the expression levels of Mmp-2 gene. Moreover, to assess the co-effects of LPA1 and LPA5 on cell motile activities, Lpar5 knockdown (3T3a1-L5) cells were also established from Lpar1 over-expressing (3T3a1) cells. 3T3a1-L5 cells increased the cell motile activities of 3T3a1 cells, while the cell motile activities of 3T3a1 cells were significantly lower than those of control cells. These results suggest that LPA5 may act as a negative regulator of cellular responses in mouse fibroblast 3T3 cells, similar to the case for LPA1.
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Affiliation(s)
- Yan Dong
- Division of Cancer Biology and Bioinformatics, Department of Life Science, Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Miku Hirane
- Division of Cancer Biology and Bioinformatics, Department of Life Science, Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Mutsumi Araki
- Division of Cancer Biology and Bioinformatics, Department of Life Science, Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Nobuyuki Fukushima
- Division of Molecular Neurobiology, Department of Life Science, Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Toshifumi Tsujiuchi
- Division of Cancer Biology and Bioinformatics, Department of Life Science, Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan.
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Tsujiuchi T, Hirane M, Dong Y, Fukushima N. Diverse effects of LPA receptors on cell motile activities of cancer cells. J Recept Signal Transduct Res 2014; 34:149-53. [DOI: 10.3109/10799893.2013.876042] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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15
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Dong Y, Araki M, Hirane M, Tanabe E, Fukushima N, Tsujiuchi T. Effects of bisphenol A and 4-nonylphenol on cellular responses through the different induction of LPA receptors in liver epithelial WB-F344 cells. J Recept Signal Transduct Res 2014; 34:201-4. [PMID: 24460192 DOI: 10.3109/10799893.2013.876040] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Lysophosphatidic acid (LPA) signaling via G protein-coupled transmembrane LPA receptors (LPA1 to LPA6) mediates a variety of cellular functions, including cell proliferation, migration, morphogenesis, and differentiation. Recently, we demonstrated that the different induction of LPA receptors by estrogens regulates cell motile activity of rat liver epithelial WB-F344 cells. In the present study, to assess whether endocrine disruptors (EDs) are involved in cellular functions through LPA signaling, we measured cell motile activity and LPA receptor expressions in WB-F344 cells treated with bisphenol A (BPA) and 4-nonylphenol (4-NP). Using quantitative real time RT-PCR analysis, the Lpar1 expression was elevated in BPA-treated cells, whereas the Lpar3 expression was decreased. In contrast, 4-NP increased the Lpar3 expression, but not the Lpar1 and Lpar2. For cell motility assay with a Cell Culture Insert, cell motile activity of BPA-treated cells was significantly lower than that of untreated cells. In contrast, 4-NP markedly enhanced cell motile activity. The effects of BPA and 4-NP on cell motility were inhibited by the Lpar1 or Lpar3 knockdown. These results suggest that BPA and 4-NP may regulate cell motile activity through the different induction of LPA receptors in WB-F344 cells.
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Affiliation(s)
- Yan Dong
- Division of Cancer Biology and Bioinformatics
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16
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Tsujiuchi T, Nakae D, Konishi Y. Multi-step lung carcinogenesis model induced by oral administration of N-nitrosobis(2-hydroxypropyl)amine in rats. ACTA ACUST UNITED AC 2013; 66:81-8. [PMID: 24377951 DOI: 10.1016/j.etp.2013.11.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 11/25/2013] [Accepted: 11/27/2013] [Indexed: 12/12/2022]
Abstract
N-Nitrosobis(2-hydroxypropyl)amine (BHP) was first synthesized by Krüger et al. (1974), and has been shown to primarily induce pancreatic duct adenocarcinomas by a subcutaneous injection in Syrian hamsters. By contrast, the carcinogenic effect of BHP has been indicated at the different target organs in rats, namely the lung. When rats are received by an oral administration of BHP in drinking water for 25 weeks, a high incidence of lung carcinomas are induced, which include adenocarcinomas, squamous cell carcinomas and combined squamous cell and adenocarcinomas. So many similarities are observed in terms of not only histological appearances but also gene alterations between human and BHP-induced rat lung cancers. Moreover, the step by step development of lung lesions, from preneoplastic lesions to cancers in rat lung carcinogenesis by BHP offers a good model to investigate the mechanisms underlying the pathogenesis of lung cancers. Because data for genetic and epigenetic alterations have indeed been accumulated during the BHP-induced rat lung carcinogenesis, we will introduce them in this review and hence demonstrate that this lung carcinogenesis model provides a useful opportunity for the research on the pathogenesis of lung cancers of both humans and rats.
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Affiliation(s)
- Toshifumi Tsujiuchi
- Division of Cancer Biology and Bioinformatics, Department of Life Science, Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan.
| | - Dai Nakae
- Department of Pharmaceutical and Environmental Sciences, Tokyo Metropolitan Institute of Public Health, 3-24-1 Hyakunin-cho, Shinjuku-ku, Tokyo 169-0073, Japan
| | - Yoichi Konishi
- Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8501, Japan; Oklahoma Medical Research Foundation, 825 N.E. 13th Street, Oklahoma City, OK 73104, USA
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17
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Magkrioti C, Aidinis V. Autotaxin and lysophosphatidic acid signalling in lung pathophysiology. World J Respirol 2013; 3:77-103. [DOI: 10.5320/wjr.v3.i3.77] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 10/03/2013] [Accepted: 11/19/2013] [Indexed: 02/06/2023] Open
Abstract
Autotaxin (ATX or ENPP2) is a secreted glycoprotein widely present in biological fluids. ATX primarily functions as a plasma lysophospholipase D and is largely responsible for the bulk of lysophosphatidic acid (LPA) production in the plasma and at inflamed and/or malignant sites. LPA is a phospholipid mediator produced in various conditions both in cells and in biological fluids, and it evokes growth-factor-like responses, including cell growth, survival, differentiation and motility, in almost all cell types. The large variety of LPA effector functions is attributed to at least six G-protein coupled LPA receptors (LPARs) with overlapping specificities and widespread distribution. Increased ATX/LPA/LPAR levels have been detected in a large variety of cancers and transformed cell lines, as well as in non-malignant inflamed tissues, suggesting a possible involvement of ATX in chronic inflammatory disorders and cancer. In this review, we focus exclusively on the role of the ATX/LPA axis in pulmonary pathophysiology, analysing the effects of ATX/LPA on pulmonary cells and leukocytes in vitro and in the context of pulmonary pathophysiological situations in vivo and in human diseases.
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Inhibitory effects of LPA1 on cell motile activities stimulated by hydrogen peroxide and 2,3-dimethoxy-1,4-naphthoquinone in fibroblast 3T3 cells. Biochem Biophys Res Commun 2013; 441:47-52. [DOI: 10.1016/j.bbrc.2013.10.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 10/04/2013] [Indexed: 01/14/2023]
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19
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Tanabe E, Kitayoshi M, Hirane M, Araki M, Dong Y, Fukushima N, Tsujiuchi T. Downregulation of activation factors of endothelia and fibroblasts via lysophosphatidic acid signaling in a mouse lung cancer LL/2 cell line. J Recept Signal Transduct Res 2013; 33:286-90. [PMID: 23909436 DOI: 10.3109/10799893.2013.823998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Angiogenesis stimulates the invasive and metastatic process of cancer cells. It is also known that activated fibroblasts promote cancer cell growth and enhance invasive and metastatic potential. Lysophosphatidic acid (LPA) is a biological mediator and interacts with G protein-coupled transmembrane LPA receptors (LPA1 to LPA6). In this study, to assess an involvement of LPA3 on angiogenesis and fibroblast activation, the Lpar3-expressing cells were generated from mouse lung cancer LL/2 cells, which unexpressed LPA3. The Lpar3-expressing cells were maintained in serum-free Dulbecco's modified Eagle's medium for 48 h, and cell motility assay was performed with a cell culture Insert. When endothelial F-2 cells and 3T3 fibroblasts were cultured with conditioned medium from the Lpar3-expressing cells, their cell motile activities were significantly lower than the Lpar3-unexpressing (control) cells. Expression levels of vascular endothelial growth factor (Vegf) and fibroblast growth factor (Fgf) genes in the Lpar3-expressing cells were measured by quantitative real time reverse transcription polymerase chain reaction analysis. The expressions of Vegf-A. Fgfa and Fgfb genes in the Lpar3-expressing cells were significantly lower than those in control cells, correlating with the effects on cell motile activities of F-2 and 3T3 cells. These results suggest that LPA signaling through LPA3 may inhibit angiogenesis and fibroblast activation in mouse lung cancer cells.
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Affiliation(s)
- Eriko Tanabe
- Division of Cancer Biology and Bioinformatics and
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Inoue S, Tanabe E, Shibata A, Hirane M, Araki M, Dong Y, Fukushima N, Tsujiuchi T. Ethionine regulates cell motile activity through LPA receptor-3 in liver epithelial WB-F344 cells. Mol Cell Biochem 2013; 383:173-7. [DOI: 10.1007/s11010-013-1765-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2013] [Accepted: 07/10/2013] [Indexed: 01/14/2023]
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21
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Shibata A, Tanabe E, Inoue S, Kitayoshi M, Okimoto S, Hirane M, Araki M, Fukushima N, Tsujiuchi T. Hydrogen peroxide stimulates cell motile activity through LPA receptor-3 in liver epithelial WB-F344 cells. Biochem Biophys Res Commun 2013; 433:317-21. [DOI: 10.1016/j.bbrc.2013.02.100] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Accepted: 02/26/2013] [Indexed: 11/25/2022]
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22
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Tanabe E, Kitayoshi M, Yoshikawa K, Shibata A, Honoki K, Fukushima N, Tsujiuchi T. Loss of lysophosphatidic acid receptor-3 suppresses cell migration activity of human sarcoma cells. J Recept Signal Transduct Res 2012; 32:328-34. [DOI: 10.3109/10799893.2012.738689] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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23
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Tanabe E, Shibata A, Inoue S, Kitayoshi M, Fukushima N, Tsujiuchi T. Regulation of cell motile activity through the different induction of LPA receptors by estrogens in liver epithelial WB-F344 cells. Biochem Biophys Res Commun 2012; 428:105-9. [PMID: 23058922 DOI: 10.1016/j.bbrc.2012.10.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Accepted: 10/02/2012] [Indexed: 01/15/2023]
Abstract
Lysophosphatidic acid (LPA) interacts with G protein-coupled transmembrane LPA receptors (LPA receptors; LPA(1)-LPA(6)). Recently, we demonstrated that each LPA receptor acts as a positive or negative regulator of cell migration ability. It is known that estrogens indicate a variety of biological functions, including cell motility. In the present study, to assess whether LPA signaling is involved in cell motile activity stimulated by estrogens, we measured cell motile activity and LPA receptor expressions of rat liver epithelial WB-F344 cells treated with 17β-estradiol (E(2)), ethinyl estradiol (EE) and diethylstilbestrol (DES) at concentrations of 0.1 and 1.0 μM for 48 h. The cell motility of E(2) and EE treated cells was significantly higher than that of untreated cells. By contrast, DES markedly inhibited cell motile activity. Using quantitative real time RT-PCR analysis, Lpar1 and Lpar3 expressions in E(2) treated cells were significantly higher than those in untreated cells. In EE treated cells, Lpar3 expression was markedly elevated, whereas Lpar1 expression was decreased. On the other hand, Lpar1 expression was significantly increased in DES treated cells. Interestingly, the effects of E(2), EE and DES on cell motility were suppressed by Lpar1 or Lpar3 knockdown. These results suggest that the different induction of LPA receptors by estrogens may regulate cell motile activity of WB-F344 cells.
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Affiliation(s)
- Eriko Tanabe
- Division of Cancer Biology and Bioinformatics, Department of Life Science, Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
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Yoshikawa K, Tanabe E, Shibata A, Inoue S, Kitayoshi M, Okimoto S, Fukushima N, Tsujiuchi T. Involvement of oncogenic K-ras on cell migration stimulated by lysophosphatidic acid receptor-2 in pancreatic cancer cells. Exp Cell Res 2012; 319:105-12. [PMID: 23041208 DOI: 10.1016/j.yexcr.2012.09.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Revised: 09/25/2012] [Accepted: 09/27/2012] [Indexed: 12/30/2022]
Abstract
Lysophosphatidic acid (LPA) mediates a variety of cellular responses with atleast six G protein-coupled transmembrane receptors (LPA receptor-1 (LPA(1)-LPA(6))). The interaction between LPA receptors and other cellular molecules on the biological function is not fully understood. Recently, we have reported that LPA(1) suppressed and LPA(3) stimulated cell migration of pancreatic cancer cells. In the present study, to evaluate the function of LPA(2) on motile and invasive activities of pancreatic cancer cells, we generated Lpar2 knockdown (HPD-sh2) cells from hamster pancreatic cancer cells and measured their cell migration ability. In cell motility and invasive assays with an uncoated Cell Culture Insert, HPD-sh2 cells showed significantly lower intrinsic activity than control (HPD-GFP) cells. Since K-ras mutations were frequently detected in pancreatic cancer, we next investigated whether oncogenic K-ras is involved in cell migration induced by LPA(2) using K-ras knockdown (HPD-K2) cells. The cell motile ability of HPD-K2 cells was significantly lower than that of control cells. To confirm LPA(2) increases cell migration activity, cells were pretreated with dioctylglycerol pyrophosphate (DGPP) which is the antagonist of LPA(1)/LPA(3). The cell motile and invasive abilities of DGPP -treated HPD-GFP cells were markedly higher than those of untreated cells, but DGPP did not stimulate cell migration of HPD-K2 cells. These results suggest that cell migration activity of pancreatic cancer cells stimulated by LPA(2) may be enhanced by oncogenic K-ras.
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Affiliation(s)
- Kyohei Yoshikawa
- Division of Cancer Biology and Bioinformatics, Department of Life Science, Faculty of Science and Engineering, Kinki University, Higashiosaka, Osaka, Japan
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25
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Fukui R, Kato K, Okabe K, Kitayoshi M, Tanabe E, Fukushima N, Tsujiuchi T. Enhancement of Drug Resistance by Lysophosphatidic Acid Receptor-3 in Mouse Mammary Tumor FM3A Cells. J Toxicol Pathol 2012; 25:225-8. [PMID: 22988342 PMCID: PMC3434339 DOI: 10.1293/tox.25.225] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 05/01/2012] [Indexed: 11/19/2022] Open
Abstract
Lysophosphatidic acid (LPA) acts as a simple phospholipid that interacts with G protein-coupled transmembrane LPA receptors. Recently, it has been reported that each LPA receptor plays different biological roles in acquisition of the malignant property of tumor cells. In this study, to assess the involvement of LPA receptor-3 (LPA(3)) in cell survival after treatment with anticancer drugs, we generated Lpar3-expressing FM3A-a3A9 cells from mouse mammary tumor FM3A cells and examined the cell survival rate after treatment with anticancer drugs compared with Lpar3-unexpressing cells. Cells were treated with 0.005 to 10 μM of cisplatin (CDDP) or doxorubicin (DOX) for 3 days. For the CDDP and DOX treatments, the cell survival rate of FM3A-a3A9 cells was significantly higher than that of Lpar3-unexpressing cells. The expression level of the Mdr1a gene in FM3A-a3A9 cells was higher than that of Lpar3-unexpressing cells, whereas no significant difference in multidrug resistance 1b (Mdr1b) and glutathione S-transferase mu1 (Gstm1) expressions was found. These results suggest that LPA(3) may enhance the cell survival rate after treatment with anticancer drugs in mouse mammary tumor cells, correlating with increased expression of the Mdr1 gene.
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Affiliation(s)
- Rie Fukui
- Division of Cancer Biology and Bioinformatics, Department of Life Science, Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashiosaka, Osaka 577-8502, Japan
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26
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Gong YL, Tao CJ, Hu M, Chen JF, Cao XF, Lv GM, Li P. Expression of lysophosphatidic acid receptors and local invasiveness and metastasis in Chinese pancreatic cancers. ACTA ACUST UNITED AC 2012; 19:eS15-21. [PMID: 22876164 DOI: 10.3747/co.19.1138] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND OBJECTIVES The present study evaluated the potential role of lysophosphatidic acid receptors (lpars) in processes leading to local invasiveness and metastasis in Chinese pancreatic carcinoma. METHODS Real-time reverse-transcriptase polymerase chain reaction and Western blot analysis were used to detect expression of lpars in tumour and adjacent non-tumour tissues from patients with surgically resected pancreatic carcinoma. Surgical specimens from 50 patients were examined for relative expression of each receptor's messenger rna (mrna) and protein. Findings were analyzed for correlations with tumour size, pathologic classification, clinical stage, and infiltration of capsule and lymphonodi. RESULTS Increased levels of mrna of lpars (lpar1 ≈ lpar3 < lpar2) were found in the pancreatic cancer tissues examined. Low levels of transcripts for lpar1, lpar2, and lpar3 receptors were detectable in adjacent non-tumour tissues. The difference in lpar1 protein expression between tumour and adjacent non-tumour tissues does not seem significant, but the signals of lpar2 expression in pancreatic cancer tumour tissues were significantly amplified compared with those in adjacent non-tumour tissues. Tumour and adjacent non-tumour tissues both weakly expressed lpar3 protein with no statistical difference. However, expression of lpar1, lpar2, and lpar3 showed an obvious correlation with infiltration of capsule cells, surrounding lymphonodi, and specific histopathologic features. CONCLUSIONS Lysophosphatidic acid receptor is a promising indicator for pancreatic cancer, and our findings suggested that lpar2 might be a potential target for clinical treatment of pancreatic cancer.
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Affiliation(s)
- Y L Gong
- Department of Oncology, Nanjing Hospital Affiliated to Nanjing Medical University, Nanjing, PR China
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27
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Fukui R, Tanabe E, Kitayoshi M, Yoshikawa K, Fukushima N, Tsujiuchi T. Negative regulation of cell motile and invasive activities by lysophosphatidic acid receptor-3 in colon cancer HCT116 cells. Tumour Biol 2012; 33:1899-905. [DOI: 10.1007/s13277-012-0450-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Accepted: 06/22/2012] [Indexed: 01/11/2023] Open
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28
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Kitayoshi M, Fukui R, Tanabe E, Kato K, Yoshikawa K, Fukushima N, Tsujiuchi T. Different effects on cell proliferation and migration abilities of endothelial cells by LPA1and LPA3in mammary tumor FM3A cells. J Recept Signal Transduct Res 2012; 32:209-13. [DOI: 10.3109/10799893.2012.692121] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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29
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Opposite roles of LPA1 and LPA3 on cell motile and invasive activities of pancreatic cancer cells. Tumour Biol 2012; 33:1739-44. [DOI: 10.1007/s13277-012-0433-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Accepted: 05/28/2012] [Indexed: 12/30/2022] Open
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30
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Differential function of lysophosphatidic acid receptors in cell proliferation and migration of neuroblastoma cells. Cancer Lett 2012; 316:91-6. [DOI: 10.1016/j.canlet.2011.10.030] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 09/15/2011] [Accepted: 10/20/2011] [Indexed: 01/24/2023]
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31
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Okabe K, Hayashi M, Kato K, Okumura M, Fukui R, Honoki K, Fukushima N, Tsujiuchi T. Lysophosphatidic acid receptor-3 increases tumorigenicity and aggressiveness of rat hepatoma RH7777 cells. Mol Carcinog 2011; 52:247-54. [DOI: 10.1002/mc.21851] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Revised: 10/15/2011] [Accepted: 11/11/2011] [Indexed: 11/10/2022]
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32
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Okumura M, Kato K, Fukui R, Fukushima N, Tsujiuchi T. No Involvement of Lysophosphatidic Acid Receptor-3 in Cell Migration of Mouse Lung Tumor Cells Stimulatedby 12-O-Tetradecanoylphorbol-13-acetate. J Toxicol Pathol 2011; 24:183-6. [PMID: 22272060 PMCID: PMC3234596 DOI: 10.1293/tox.24.183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Accepted: 05/30/2011] [Indexed: 11/20/2022] Open
Abstract
The tumor promoting agent 12-O-tetradecanoylphorbol-13-acetate (TPA) stimulates cell
migration of several tumor cells. Recently, we reported that loss of lysophosphatidic acid
(LPA) receptor-3 (LPA3) enhanced cell migration of murine lung tumor LL/2
cells. In the present study, we investigated whether LPA3 is involved in cell
migration of mouse lung tumor cells stimulated by TPA. Exogenous LPA3 gene
(Lpar3)-expressing (LL/2-a3) cells and LL/2-AB cells as a vector
control generated from LL/2 cells were used. In a cell migration assay, TPA treatment
significantly stimulated cell migration of LL/2-AB and LL/2-a3 cells, while the cell
migration abilities of LL/2-a3 were markedly lower than those of LL/2-AB cells. Using
quantitative real-time reverse transcription (RT)-polymerase chain reaction (PCR)
analysis, no effect of TPA treatment on the expression levels of LPA1,
LPA2 and LPA3 genes was detected in either type of cells. These
results suggest that the LPA3 may not be involved in the enhanced migration
ability by TPA in mouse lung tumor cells.
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Affiliation(s)
- Mai Okumura
- Division of Cancer Biology and Bioinformatics, Department of Life Science,
Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka
577-8502, Japan
| | - Kohei Kato
- Division of Cancer Biology and Bioinformatics, Department of Life Science,
Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka
577-8502, Japan
| | - Rie Fukui
- Division of Cancer Biology and Bioinformatics, Department of Life Science,
Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka
577-8502, Japan
| | - Nobuyuki Fukushima
- Division of Molecular Neurobiology, Department of Life Science, Faculty of
Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502,
Japan
| | - Toshifumi Tsujiuchi
- Division of Cancer Biology and Bioinformatics, Department of Life Science,
Faculty of Science and Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka, Osaka
577-8502, Japan
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Okabe K, Kato K, Teranishi M, Okumura M, Fukui R, Mori T, Fukushima N, Tsujiuchi T. Induction of lysophosphatidic acid receptor-3 by 12-O-tetradecanoylphorbol-13-acetate stimulates cell migration of rat liver cells. Cancer Lett 2011; 309:236-42. [DOI: 10.1016/j.canlet.2011.06.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 06/09/2011] [Accepted: 06/14/2011] [Indexed: 12/20/2022]
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34
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LV G, Li P, Wang W, Wang S, Chen J, Gong Y. Lysophosphatidic acid (LPA) and endothelial differentiation gene (Edg) receptors in human pancreatic cancer. J Surg Oncol 2011; 104:685-91. [DOI: 10.1002/jso.22016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Accepted: 06/09/2011] [Indexed: 11/06/2022]
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