Raf kinase inhibitory protein reduces bradykinin receptor desensitization.
Raf kinase inhibitory protein reduces bradykinin receptor desensitization.
复制标题
Raf激酶抑制蛋白减少缓激肽受体脱敏。
DOI:
10.1111/jnc.15614
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发表时间:
2022-07
影响因子:
4.7
通讯作者:
中科院分区:
文献类型:
--
作者:
Inflammatory hyperalgesia represents a nociceptive phenotype that can become persistent in nature through dynamic protein modifications. However, a large gap in knowledge exists concerning how the integration of intracellular signaling molecules coordinates a persistent inflammatory phenotype. Herein, we demonstrate that Raf Kinase Anchoring Protein (RKIP) interrupts a vital canonical desensitization pathway to maintain bradykinin (BK) receptor activation in primary afferent neurons. Biochemical analyses of primary neuronal cultures indicate bradykinin‐stimulated PKC phosphorylation of RKIP at Ser153. Furthermore, BK exposure increases G‐protein Receptor Kinase 2 (GRK2) binding to RKIP, inhibiting pharmacological desensitization of the BK receptor. Additional studies found that molecular RKIP down‐regulation increases BK receptor desensitization in real‐time imaging of primary afferent neurons, identifying a key pathway integrator in the desensitization process that controls multiple GRK2‐sensitive G‐protein coupled receptors. Therefore, RKIP serves as an integral scaffolding protein that inhibits BK receptor desensitization. In this study, we investigated unknown biochemical modulators that may contribute to persistent inflammation. We identified that small, physiological concentrations of bradykinin can stimulate protein kinase C (PKC) activity, to increase phosphorylation of Raf Kinase Inhibitory Protein (RKIP) and its association with GPCR Receptor Kinase 2 (GRK2). Experimental results indicate that the scaffolding protein RKIP coordinates GRK2 availability for GPCR desensitization in sensory neurons. Our findings identify a new role for RKIP in regulating inflammatory GPCR responsivity.
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影响因子:
8.8
作者:
Brackley, Allison Doyle;Gomez, Ruben;Jeske, Nathaniel A.
通讯作者:
Jeske, Nathaniel A.
DOI:
10.1073/pnas.95.6.2985
发表时间:
1998-03-17
影响因子:
11.1
作者:
Aragay, AM;Mellado, M;Mayor, F
通讯作者:
Mayor, F
DOI:
10.1073/pnas.95.12.7151
发表时间:
1998-06-09
影响因子:
11.1
作者:
Cruzblanca, H;Koh, DS;Hille, B
通讯作者:
Hille, B
影响因子:
64.8
作者:
Lorenz, K;Lohse, MJ;Quitterer, U
通讯作者:
Quitterer, U
影响因子:
7.4
作者:
Gomez R;Por ED;Berg KA;Clarke WP;Glucksman MJ;Jeske NA
通讯作者:
Jeske NA