Abstract
Our recent study showed that bradykinin increases cell cycling progression and migration of human cardiac c-Kit+ progenitor cells by activating pAkt and pERK1/2 signals. This study investigated whether bradykinin-mediated Ca2+ signalling participates in regulating cellular functions in cultured human cardiac c-Kit+ progenitor cells using laser scanning confocal microscopy and biochemical approaches. It was found that bradykinin increased cytosolic free Ca2+ ( ) by triggering a transient Ca2+ release from ER IP3Rs followed by sustained Ca2+ influx through store-operated Ca2+ entry (SOCE) channel. Blockade of B2 receptor with HOE140 or IP3Rs with araguspongin B or silencing IP3R3 with siRNA abolished both Ca2+ release and Ca2+ influx. It is interesting to note that the bradykinin-induced cell cycle progression and migration were not observed in cells with siRNA-silenced IP3R3 or the SOCE component TRPC1, Orai1 or STIM1. Also the bradykinin-induced increase in pAkt and pERK1/2 as well as cyclin D1 was reduced in these cells. These results demonstrate for the first time that bradykinin-mediated increase in free via ER-IP3R3 Ca2+ release followed by Ca2+ influx through SOCE channel plays a crucial role in regulating cell growth and migration via activating pAkt, pERK1/2 and cyclin D1 in human cardiac c-Kit+ progenitor cells.
Keywords:
bradykinin; cell cycle progression; human cardiac c-Kit+ progenitor cells; inositol 1,4,5-triphosphate receptor; migration; store-operated Ca2+ entry.
© 2018 The Authors. Journal of Cellular and Molecular Medicine published by John Wiley & Sons Ltd and Foundation for Cellular and Molecular Medicine.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Bradykinin / pharmacology*
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Calcium / metabolism*
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Calcium Signaling / drug effects*
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Cations, Divalent
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Cell Movement / drug effects
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Cell Proliferation / drug effects
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Cyclin D1 / genetics
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Cyclin D1 / metabolism
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Female
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Gene Expression Regulation
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Humans
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Inositol 1,4,5-Trisphosphate Receptors / genetics
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Inositol 1,4,5-Trisphosphate Receptors / metabolism
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Ion Transport / drug effects
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Male
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Middle Aged
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Mitogen-Activated Protein Kinase 1 / genetics
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Mitogen-Activated Protein Kinase 1 / metabolism
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Mitogen-Activated Protein Kinase 3 / genetics
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Mitogen-Activated Protein Kinase 3 / metabolism
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Myocardium / cytology
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Myocardium / metabolism
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Neoplasm Proteins / antagonists & inhibitors
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Neoplasm Proteins / genetics
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Neoplasm Proteins / metabolism
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ORAI1 Protein / antagonists & inhibitors
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ORAI1 Protein / genetics
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ORAI1 Protein / metabolism
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Primary Cell Culture
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Proto-Oncogene Proteins c-akt / genetics
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Proto-Oncogene Proteins c-akt / metabolism
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Proto-Oncogene Proteins c-kit / antagonists & inhibitors
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Proto-Oncogene Proteins c-kit / genetics*
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Proto-Oncogene Proteins c-kit / metabolism
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Quinolizines / pharmacology
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RNA, Small Interfering / genetics
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RNA, Small Interfering / metabolism
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Stem Cells / cytology
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Stem Cells / drug effects*
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Stem Cells / metabolism
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Stromal Interaction Molecule 1 / antagonists & inhibitors
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Stromal Interaction Molecule 1 / genetics
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Stromal Interaction Molecule 1 / metabolism
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TRPC Cation Channels / antagonists & inhibitors
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TRPC Cation Channels / genetics
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TRPC Cation Channels / metabolism
Substances
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CCND1 protein, human
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Cations, Divalent
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ITPR3 protein, human
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Inositol 1,4,5-Trisphosphate Receptors
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Neoplasm Proteins
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ORAI1 Protein
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ORAI1 protein, human
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Quinolizines
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RNA, Small Interfering
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STIM1 protein, human
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Stromal Interaction Molecule 1
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TRPC Cation Channels
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transient receptor potential cation channel, subfamily C, member 1
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Cyclin D1
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KIT protein, human
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Proto-Oncogene Proteins c-kit
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Proto-Oncogene Proteins c-akt
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MAPK1 protein, human
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MAPK3 protein, human
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Mitogen-Activated Protein Kinase 1
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Mitogen-Activated Protein Kinase 3
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Bradykinin
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Calcium