Why the study?
Does genetic deletion of β-arrestins prevent β2AR-mediated ERK activation in cell models?
Does genetic deletion of β-arrestins prevent β2AR-mediated ERK activation in cell models?
The study provides genetic evidence that β-arrestins are dispensable for β2AR-mediated ERK activation, which instead relies on Gαs and Gβγ signaling.
Challenges β-arrestin requirement for β2AR ERK activation in animal models; leaves open relevance to human cardiovascular signaling.
AR signaling through β-arrestin-independent pathways in key physiological functions and under pathological conditions.
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O’Hayre et al. (2017) studied this question.
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