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Effects of lysophosphatidic acid (LPA) signaling via LPA receptors on cellular functions associated with ATP reduction in osteosarcoma cells treated with ethidium bromide

Lysophosphatidic acid (LPA) signaling via LPA receptors (LPA 1 to LPA 6 ) exhibits a variety of malignant properties in cancer cells. Intracellular ATP depletion leads to the development of necrosis and apoptosis. The present study aimed to evaluate the effects of LPA receptor-mediated signaling on...

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Published in:Journal of bioenergetics and biomembranes 2022-04, Vol.54 (2), p.109-117
Main Authors: Kurisu, Rio, Takamoto, Miyu, Minami, Kanako, Ueda, Nanami, Yamada, Marina, Shima, Nanami, Otani, Tomoka, Sakai, Yuma, Kondo, Daisuke, Tsujiuchi, Toshifumi
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cited_by cdi_FETCH-LOGICAL-c375t-3538be848586024a4146ee7965c7b3ce39bbfe50bea98d7d38d6adbe03f9b463
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container_title Journal of bioenergetics and biomembranes
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creator Kurisu, Rio
Takamoto, Miyu
Minami, Kanako
Ueda, Nanami
Yamada, Marina
Shima, Nanami
Otani, Tomoka
Sakai, Yuma
Kondo, Daisuke
Tsujiuchi, Toshifumi
description Lysophosphatidic acid (LPA) signaling via LPA receptors (LPA 1 to LPA 6 ) exhibits a variety of malignant properties in cancer cells. Intracellular ATP depletion leads to the development of necrosis and apoptosis. The present study aimed to evaluate the effects of LPA receptor-mediated signaling on the regulation of cancer cell functions associated with ATP reduction. Long-term ethidium bromide (EtBr) treated (MG63-EtBr) cells were established from osteosarcoma MG-63 cells. The intracellular ATP levels of MG63-EtBr cells were significantly lower than that of MG-63 cells. LPAR2 , LPAR3 , LPAR4 and LPAR6 gene expressions were elevated in MG63-EtBr cells. The cell motile and invasive activities of MG63-EtBr cells were markedly higher than those of MG-63 cells. The cell motile activity of MG-63 cells was increased by LPA 4 and LPA 6 knockdowns. In cell survival assay, cells were treated with cisplatin (CDDP) every 24 h for 3 days. The cell survival to CDDP of MG63-EtBr cells was lower than that of MG-63 cells. LPA 2 knockdown decreased the cell survival to CDDP of MG-63 cells. The cell survival to CDDP of MG-63 cells was inhibited by (2 S)-OMPT (LPA 3 agonist). Moreover, the cell survival to CDDP of MG-63 cells was enhanced by LPA 4 and LPA 6 knockdowns. These results indicate that LPA signaling via LPA receptors is involved in the regulation of cellular functions associated with ATP reduction in MG-63 cells treated with EtBr.
doi_str_mv 10.1007/s10863-022-09933-8
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The cell survival to CDDP of MG-63 cells was inhibited by (2 S)-OMPT (LPA 3 agonist). Moreover, the cell survival to CDDP of MG-63 cells was enhanced by LPA 4 and LPA 6 knockdowns. 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Intracellular ATP depletion leads to the development of necrosis and apoptosis. The present study aimed to evaluate the effects of LPA receptor-mediated signaling on the regulation of cancer cell functions associated with ATP reduction. Long-term ethidium bromide (EtBr) treated (MG63-EtBr) cells were established from osteosarcoma MG-63 cells. The intracellular ATP levels of MG63-EtBr cells were significantly lower than that of MG-63 cells. LPAR2 , LPAR3 , LPAR4 and LPAR6 gene expressions were elevated in MG63-EtBr cells. The cell motile and invasive activities of MG63-EtBr cells were markedly higher than those of MG-63 cells. The cell motile activity of MG-63 cells was increased by LPA 4 and LPA 6 knockdowns. In cell survival assay, cells were treated with cisplatin (CDDP) every 24 h for 3 days. The cell survival to CDDP of MG63-EtBr cells was lower than that of MG-63 cells. LPA 2 knockdown decreased the cell survival to CDDP of MG-63 cells. The cell survival to CDDP of MG-63 cells was inhibited by (2 S)-OMPT (LPA 3 agonist). Moreover, the cell survival to CDDP of MG-63 cells was enhanced by LPA 4 and LPA 6 knockdowns. 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ispartof Journal of bioenergetics and biomembranes, 2022-04, Vol.54 (2), p.109-117
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subjects Adenosine Triphosphate - pharmacology
Animal Anatomy
Animal Biochemistry
Apoptosis
ATP
Biochemistry
Biomedical materials
Bioorganic Chemistry
Bone cancer
Bone Neoplasms - drug therapy
Bone Neoplasms - genetics
Cancer
Cell Movement
Cell survival
Chemistry
Chemistry and Materials Science
Cisplatin
Depletion
Ethidium - pharmacology
Ethidium bromide
Gene Expression Regulation, Neoplastic
Histology
Humans
Intracellular
Invasiveness
Lysophosphatidic acid
Lysophospholipids - metabolism
Morphology
Necrosis
Organic Chemistry
Osteosarcoma
Osteosarcoma - drug therapy
Osteosarcoma - genetics
Osteosarcoma cells
Receptor mechanisms
Receptors
Receptors, Lysophosphatidic Acid - genetics
Receptors, Lysophosphatidic Acid - metabolism
Reduction
Sarcoma
Signaling
Survival
title Effects of lysophosphatidic acid (LPA) signaling via LPA receptors on cellular functions associated with ATP reduction in osteosarcoma cells treated with ethidium bromide
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