ArticleJournal of molecular neuroscience : MN2016
Activation of MEK/ERK Signaling by PACAP in Guinea Pig Cardiac Neurons.
Article in Journal of molecular neuroscience : MN, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 28 citations in OpenAlex.
- Targeting VIP and PACAP Receptor Signaling: New Insights into Designing Drugs for the PACAP Subfamily of Receptors.International journal of molecular sciences · 2022Review
- PAC1 Receptor Internalization and Endosomal MEK/ERK Activation Is Essential for PACAP-Mediated Neuronal Excitability.Journal of molecular neuroscience : MN · 2021Review
- Alzheimer's Disease Mouse as a Model of Testis Degeneration.International journal of molecular sciences · 2020Article
- The road to ERK activation: Do neurons take alternate routes?Cellular signalling · 2020Review
- Examination of Pituitary Adenylate Cyclase-Activating Polypeptide (PACAP) as a Potential Biomarker in Heart Failure Patients.Journal of molecular neuroscience : MN · 2019Article
- PACAP-Induced PAC1 Receptor Internalization and Recruitment of Endosomal Signaling Regulate Cardiac Neuron Excitability.Journal of molecular neuroscience : MN · 2019Review
- Pituitary Adenylate Cyclase-Activating Peptide (PACAP) Signaling and the Dark Side of Addiction.Journal of molecular neuroscience : MN · 2019Review
- Pituitary adenylate cyclase-activating polypeptide ameliorates radiation-induced cardiac injury.American journal of translational research · 2019Article
- Src family kinase inhibitors blunt PACAP-induced PAC1 receptor endocytosis, phosphorylation of ERK, and the increase in cardiac neuron excitability.American journal of physiology. Cell physiology · 2018Article
- β-Arrestin1 and 2 differentially regulate PACAP-induced PAC1 receptor signaling and trafficking.PloS one · 2018Article
- Recruitment of endosomal signaling mediates the forskolin modulation of guinea pig cardiac neuron excitability.American journal of physiology. Cell physiology · 2017Article
- Early Neurobehavioral Development of Mice Lacking Endogenous PACAP.Journal of molecular neuroscience : MN · 2017Article
- Passage through the Ocular Barriers and Beneficial Effects in Retinal Ischemia of Topical Application of PACAP1-38 in Rodents.International journal of molecular sciences · 2017Article
- PACAP Is Protective in a Rat Model of Retinopathy of Prematurity.Journal of molecular neuroscience : MN · 2016Article
- Activation of MEK/ERK signaling contributes to the PACAP-induced increase in guinea pig cardiac neuron excitability.American journal of physiology. Cell physiology · 2016Article
- The Protective Role of PAC1-Receptor Agonist Maxadilan in BCCAO-Induced Retinal Degeneration.Journal of molecular neuroscience : MN · 2016Article
- Expression of PACAP and PAC1 Receptor in Normal Human Thyroid Gland and in Thyroid Papillary Carcinoma.Journal of molecular neuroscience : MN · 2016Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
Pituitary adenylate cyclase-activating polypeptide (PACAP) signaling can increase guinea pig cardiac neuron excitability in part through extracellular signal-regulated kinase (ERK) activation. The present study examined the PACAP receptors and signaling cascades that stimulate guinea pig cardiac neuron ERK signaling using confocal microscopy to quantify PACAP-induced neuronal phosphorylated ERK (pERK) immunoreactivity. PACAP and maxadilan, but not vasoactive intestinal polypeptide (VIP), increased cardiac neuron pERK, implicating primary roles for PACAP-selective PAC1 receptor (Adcyap1r1) signaling rather than VPAC receptors (Vipr1 and Vipr2) in the generation of cardiac neuron pERK. The adenylyl cyclase (AC) activator forskolin, but not the protein kinase C (PKC) activator phorbol myristate acetate (PMA), increased pERK. Also, Bim1 did not blunt PACAP activation of pERK. Together, the results suggest PAC1 receptor signal transduction via Gs/adenylyl cyclase (AC)/cAMP rather than Gq/phospholipase C (PLC) generated neuronal pERK. Activator and inhibitor studies suggested that the PACAP-mediated pERK activation was PKA-dependent rather than an exchange protein directly activated by a cAMP (EPAC), PKA-independent mechanism. The PACAP-induced pERK was inhibited by the clathrin inhibitor Pitstop2 to block receptor internalization and endosomal signaling. We propose that the PACAP-mediated MEK/ERK activation in cardiac neurons involves both AC/cAMP/PKA signaling and PAC1 receptor internalization/activation of signaling endosomes.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.