2022
DOI: 10.3390/ijms23021000
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Scaffolding of Mitogen-Activated Protein Kinase Signaling by β-Arrestins

Abstract: β-arrestins were initially identified to desensitize and internalize G-protein-coupled receptors (GPCRs). Receptor-bound β-arrestins also initiate a second wave of signaling by scaffolding mitogen-activated protein kinase (MAPK) signaling components, MAPK kinase kinase, MAPK kinase, and MAPK. In particular, β-arrestins facilitate ERK1/2 or JNK3 activation by scaffolding signal cascade components such as ERK1/2-MEK1-cRaf or JNK3-MKK4/7-ASK1. Understanding the precise molecular and structural mechanisms of β-arr… Show more

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Cited by 12 publications
(12 citation statements)
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“…In another scaffolding role, β-arrestin can assemble the entire extracellular signal-regulated kinase (ERK/MAPK [mitogenactivated protein kinase]) cascade. It has binding sites for sequentially acting cRaf (MAPK kinase kinase), MEK (MAPK kinase), and ERK (MAPK) that mediate a signaling cascade for cell proliferation, cell migration, and actin dynamics after activation of G-protein coupled receptors (Luttrell et al, 2001;Shenoy and Lefkowitz, 2011;Jung et al, 2017;Kim et al, 2022). In our work with optical probes and single-molecule total internal reflection fluorescence, we saw a recruitment and loose (reversible in seconds) association of β-arrestin with M 1 receptors developing in ∼5 s (half time) of agonist application, followed by a stable (reversible only in many minutes) receptor association with β-arrestin developing in 10 min, and phosphorylation of ERK accumulating slowly over 5-10 min (Jung et al, 2017;Jung and Hille, 2019).…”
Section: Examples Of Metabolic Controlmentioning
confidence: 99%
“…In another scaffolding role, β-arrestin can assemble the entire extracellular signal-regulated kinase (ERK/MAPK [mitogenactivated protein kinase]) cascade. It has binding sites for sequentially acting cRaf (MAPK kinase kinase), MEK (MAPK kinase), and ERK (MAPK) that mediate a signaling cascade for cell proliferation, cell migration, and actin dynamics after activation of G-protein coupled receptors (Luttrell et al, 2001;Shenoy and Lefkowitz, 2011;Jung et al, 2017;Kim et al, 2022). In our work with optical probes and single-molecule total internal reflection fluorescence, we saw a recruitment and loose (reversible in seconds) association of β-arrestin with M 1 receptors developing in ∼5 s (half time) of agonist application, followed by a stable (reversible only in many minutes) receptor association with β-arrestin developing in 10 min, and phosphorylation of ERK accumulating slowly over 5-10 min (Jung et al, 2017;Jung and Hille, 2019).…”
Section: Examples Of Metabolic Controlmentioning
confidence: 99%
“…Meanwhile, β-arrestins also interact with the intracellular signaling proteins ( 47 ). Mitogen-activated protein kinases (MAPK) cascade is an important signaling pathway for β-arrestin-activated intracellular signaling molecules ( 48 ).…”
Section: Ffa Receptorsmentioning
confidence: 99%
“…More recent evidence suggests that some internalized GPCR/ β-arrestin complexes result in sustained activation of adenylylcyclase and/or β-arrestin dependent activation of Src, extracellular signal regulated kinase (ERK1/2), c-Jun-Nterminal kinase (JNK), and p38 MAPK (Shenoy et al, 2006;Pakharukova et al, 2020;Kim et al, 2022). The extent of GRKmediated phosphorylation determines the stability of GPCR/βarrestin complexes.…”
Section: Relevance Of β-Arrestins As Negative and Positive Regulators...mentioning
confidence: 99%