Heregulin β-1 induces loss of cell-cell contact and enhances expression of MUC1 at the cell surface in HCC2998 and MKN45-1 cells. [PDF]
Signal transduction and cell responses after stimulation with heregulin β-1 (HRG) are examined in HCC2998 and MKN45-1 cells, which have been used for a model system to study the formation of signet ring carcinomas, one of poorly differentiated ...
Rintaro Okoshi +3 more
doaj +1 more source
Coordinating the balance between development and stress responses is critical for organismal survival. However, the cellular signaling controlling this mechanism is not well understood.
Rose Aria Malinow +3 more
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HAM-5 functions as a MAP kinase scaffold during cell fusion in Neurospora crassa. [PDF]
Cell fusion in genetically identical Neurospora crassa germlings and in hyphae is a highly regulated process involving the activation of a conserved MAP kinase cascade that includes NRC-1, MEK-2 and MAK-2. During chemotrophic growth in germlings, the MAP
Wilfried Jonkers +8 more
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A Caenorhabditis elegans MAP kinase kinase, MEK‐1, is involved in stress responses [PDF]
The c-Jun N-terminal kinase (JNK), a member of the mitogen-activated protein kinase (MAPK) family, was shown to be involved in the response to various stresses in cultured cells. However, there is little in vivo evidence indicating a role for a JNK pathway in the stress response of an organism. We identified the Caenorhabditis elegans mek-1 gene, which
Koga, Makoto +4 more
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Regulation of the MAP kinase cascade in PC12 cells: B‐Raf activates MEK‐1 (MAP kinase or ERK kinase) and is inhibited by cAMP [PDF]
In PC12 cells, cAMP stimulates the MAP kinase pathway by an unknown mechanism. Firstly, we examined the role of calcium ion mobilization and of protein kinase C in cAMP‐stimulated MAP kinase activation. We show that cAMP stimulates p44mapk independently of these events. Secondly, we studied the role of B‐Raf in this process.
Peraldi, P +7 more
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Insulin signaling inhibits the 5-HT2C receptor in choroid plexus via MAP kinase
Background G protein-coupled receptors (GPCRs) interact with heterotrimeric GTP-binding proteins (G proteins) to modulate acute changes in intracellular messenger levels and ion channel activity.
Guan Kunliang +7 more
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Nuclear hormone receptor regulation of microRNAs controls innate immune responses in C. elegans. [PDF]
Nuclear hormone receptors respond to small molecules such as retinoids or steroids and regulate development. Signaling in the conserved p38/PMK-1 MAP kinase pathway regulates innate immunity. In this study, we show that the Caenorhabditis elegans nuclear
Feng Liu +9 more
doaj +1 more source
The germinal center kinase GCK-1 is a negative regulator of MAP kinase activation and apoptosis in the C. elegans germline. [PDF]
The germinal center kinases (GCK) constitute a large, highly conserved family of proteins that has been implicated in a wide variety of cellular processes including cell growth and proliferation, polarity, migration, and stress responses.
Katherine R Schouest +5 more
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Background: Methyl lucidone (ML), a methyl derivative of lucidone, has anti-inflammatory properties. However, the molecular mechanisms that reduce the inflammatory effect of ML in human lung epithelial cells remain unkown.
Eun Sol Oh +13 more
doaj +1 more source
Identification of the sites in MAP kinase kinase‐1 phosphorylated by p74raf‐1.
Many growth factors whose receptors are protein tyrosine kinases stimulate the MAP kinase pathway by activating first the GTP-binding protein Ras and then the protein kinase p74raf-1. p74raf-1 phosphorylates and activates MAP kinase kinase (MAPKK). To understand the mechanism of activation of MAPKK, we have identified Ser217 and Ser221 of MAPKK1 as the
Alessi, D. R. +8 more
openaire +3 more sources

