p(HGNC:MAPK1)
Recent studies have supported a role for ERK and CREB activity in neural plasticity associated with nicotine addiction (71, 381, 484). It has also been proposed that the ERK and JAK-2/STAT-3 signaling pathways contribute to the toxic effects of nicotine in skin cells (42), and other pathways contribute to the effects of nicotine and other nicotinic ligands on inflammatory responses as described below. PubMed:19126755
Recent studies have supported a role for ERK and CREB activity in neural plasticity associated with nicotine addiction (71, 381, 484). It has also been proposed that the ERK and JAK-2/STAT-3 signaling pathways contribute to the toxic effects of nicotine in skin cells (42), and other pathways contribute to the effects of nicotine and other nicotinic ligands on inflammatory responses as described below. PubMed:19126755
Abeta initiates intracellular signaling cascades via nAChRs (Fig. 3), including the MAPK kinase signaling pathway, resulting in cell death. In hippocampal slices, Abeta activates ERK-2 isoforms of the ERK MAPK. This is blocked by alpha7 antagonists, suggesting that Abeta evokes the cascade through alpha7 nAChRs (Dineley et al., 2001). PubMed:19293145
Since Erk1/2 activity has been shown to induce cdk5 (Harada et al, 2001), miR-125b-induced Erk1/2 activation through DUSP6 downregulation might ultimately stimulate aberrant cdk5/p35 activation and, consequently, enhance pathological tau phosphorylation at multiple sites PubMed:25001178
In primary neurons, overexpression of miR-125b causes tau hyperphosphorylation and an upregulation of p35, cdk5, and p44/42-MAPK signaling. In parallel, the phosphatases DUSP6 and PPP1CA and the anti-apoptotic factor Bcl-W are downregulated as direct targets of miR-125b. Knockdown of these phosphatases induces tau hyperphosphorylation, and overexpression of PPP1CA and Bcl-W prevents miR-125b-induced tau phosphorylation, suggesting that they mediate the effects of miR-125b on tau. Conversely, suppression of miR-125b in neurons by tough decoys reduces tau phosphorylation and kinase expression/activity. Injecting miR-125b into the hippocampus of mice impairs associative learning and is accompanied by downregulation of Bcl-W, DUSP6, and PPP1CA, resulting in increased tau phosphorylation in vivo. Importantly, DUSP6 and PPP1CA are also reduced in AD brains. PubMed:25001178
Since Erk1/2 activity has been shown to induce cdk5 (Harada et al, 2001), miR-125b-induced Erk1/2 activation through DUSP6 downregulation might ultimately stimulate aberrant cdk5/p35 activation and, consequently, enhance pathological tau phosphorylation at multiple sites PubMed:25001178
The highly vulnerable CA1 pyramidal neurons were characterized by age- and disease-unrelated increases in PRCKB levels and by age- and disease-related increases in MAPK1 levels. In contrast, low PRKCB levels were found in CA2 pyramidal neurons, and MAPK1 levels were elevated in controls and intermediate AD stages. Both PRKCB and MAPK1 were increased in the late AD stages. MAPK1 and PRKCB levels were low in the brainstem and cerebellum. PubMed:21910444
Recent studies have supported a role for ERK and CREB activity in neural plasticity associated with nicotine addiction (71, 381, 484). It has also been proposed that the ERK and JAK-2/STAT-3 signaling pathways contribute to the toxic effects of nicotine in skin cells (42), and other pathways contribute to the effects of nicotine and other nicotinic ligands on inflammatory responses as described below. PubMed:19126755
Recent studies have supported a role for ERK and CREB activity in neural plasticity associated with nicotine addiction (71, 381, 484). It has also been proposed that the ERK and JAK-2/STAT-3 signaling pathways contribute to the toxic effects of nicotine in skin cells (42), and other pathways contribute to the effects of nicotine and other nicotinic ligands on inflammatory responses as described below. PubMed:19126755
Abeta initiates intracellular signaling cascades via nAChRs (Fig. 3), including the MAPK kinase signaling pathway, resulting in cell death. In hippocampal slices, Abeta activates ERK-2 isoforms of the ERK MAPK. This is blocked by alpha7 antagonists, suggesting that Abeta evokes the cascade through alpha7 nAChRs (Dineley et al., 2001). PubMed:19293145
When combined with ERK2 catalyzed phosphorylation, the turn-like disrupting G207V mutation in TauF8 hence leads to fast aggregation that already occurs during the phosphorylation reaction. PubMed:28784767
When combined with ERK2 catalyzed phosphorylation, the turn-like disrupting G207V mutation in TauF8 hence leads to fast aggregation that already occurs during the phosphorylation reaction. PubMed:28784767
Since Erk1/2 activity has been shown to induce cdk5 (Harada et al, 2001), miR-125b-induced Erk1/2 activation through DUSP6 downregulation might ultimately stimulate aberrant cdk5/p35 activation and, consequently, enhance pathological tau phosphorylation at multiple sites PubMed:25001178
Since Erk1/2 activity has been shown to induce cdk5 (Harada et al, 2001), miR-125b-induced Erk1/2 activation through DUSP6 downregulation might ultimately stimulate aberrant cdk5/p35 activation and, consequently, enhance pathological tau phosphorylation at multiple sites PubMed:25001178
Furthermore, cytokine secretion depends on the coordinated iron in the porphyrin ring (Figueiredo et al, 2007), and nuclear factor-jB (NF-jB), MAPKs activation and ROS are essential for the increase in cytokine production induced by haem (Fernandez et al, 2010). PubMed:25307023
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If you find BEL Commons useful in your work, please consider citing: Hoyt, C. T., Domingo-Fernández, D., & Hofmann-Apitius, M. (2018). BEL Commons: an environment for exploration and analysis of networks encoded in Biological Expression Language. Database, 2018(3), 1–11.