The dual-function chemokine receptor CCR2 drives migration and chemokine scavenging through distinct mechanisms.
The dual-function chemokine receptor CCR2 drives migration and chemokine scavenging through distinct mechanisms.
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DOI:
10.1126/scisignal.abo4314
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发表时间:
2023-01-31
影响因子:
7.3
通讯作者:
中科院分区:
文献类型:
--
作者:
C-C chemokine receptor 2 (CCR2) is a dual function receptor. Like other G protein-coupled chemo receptors, it promotes monocyte infiltration into tissues in response to the chemokine CCL2, and like atypical chemokine receptors (ACKRs), it scavenges chemokine from the extracellular environment. CCR2 therefore mediates CCL2-dependent signaling as a G protein–coupled receptor (GPCR) and also limits CCL2 signaling as scavenger receptor. We investigated the mechanisms underlying CCR2 scavenging, including the involvement of intracellular proteins typically associated with GPCR signaling and internalization. Using CRISPR knockout cell lines, we showed that CCR2 scavenged by constitutively internalizing to remove CCL2 from the extracellular space and recycling back to the cell surface for further rounds of ligand sequestration. This process occurred independently of G proteins, GPCR kinases (GRKs), β-arrestins, and clathrin, which is distinct from other “professional” chemokine scavenger receptors that couple to GRKs, β-arrestins, or both. These findings set the stage for understanding the molecular regulators that determine CCR2 scavenging and may have implications for drug development targeting this therapeutically important receptor.
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影响因子:
7.8
作者:
Damke, H;Baba, T;Warnock, D E;Schmid, S L
通讯作者:
Schmid, S L
影响因子:
4.6
作者:
Dyer DP;Pallas K;Medina-Ruiz L;Schuette F;Wilson GJ;Graham GJ
通讯作者:
Graham GJ
影响因子:
7.3
作者:
Bonecchi R;Graham GJ
通讯作者:
Graham GJ
DOI:
10.1073/pnas.84.24.8879
发表时间:
1987-12-01
影响因子:
11.1
作者:
BENOVIC, JL;KUHN, H;LEFKOWITZ, RJ
通讯作者:
LEFKOWITZ, RJ
影响因子:
30.5
作者:
D'Amico, G;Frascaroli, G;Mantovani, A
通讯作者:
Mantovani, A