Axl, a tyrosine kinase receptor, was recently identified as an essential component regulating innate immune response. Suppressor of cytokine signaling 1 and suppressor of cytokine signaling 3 are potent Axl-inducible negative inflammatory regulators. This study investigated the role of Axl signaling pathway in immune restoration in an autologous blood-injection mouse model of intracerebral hemorrhage. Recombinant growth arrest-specific 6 (Gas6) and R428 were administrated as specific agonist and antagonist. In vivo knockdown of Axl or suppressor of cytokine signaling 1 and suppressor of cytokine signaling 3 by siRNA was applied. After intracerebral hemorrhage, the expression of endogenous Axl, soluble Axl, and Gas6 was increased, whereas the expression of suppressor of cytokine signaling 1 and suppressor of cytokine signaling 3 was inhibited. Recombinant growth arrest-specific 6 administration alleviated brain edema and improved neurobehavioral performances. Moreover, enhanced Axl phosphorylation with cleavage of soluble Axl (sAxl), and an upregulation of suppressor of cytokine signaling 1 and suppressor of cytokine signaling 3 were observed. In vivo knockdown of Axl and R428 administration both abolished the effect of recombinant growth arrest-specific 6 on brain edema and also decreased the expression suppressor of cytokine signaling 1 and suppressor of cytokine signaling 3. In vivo knockdown of suppressor of cytokine signaling 1 and suppressor of cytokine signaling 3 aggravated cytokine releasing despite of recombinant growth arrest-specific 6. In conclusion, Axl plays essential role in immune restoration after intracerebral hemorrhage. And recombinant growth arrest-specific 6 attenuated brain injury after intracerebral hemorrhage, probably by enhancing Axl phosphorylation and production of suppressor of cytokine signaling 1 and suppressor of cytokine signaling 3.
基金:
National Institute of Health [NS082184]; National Natural Science Foundation of China (NSFC) [81500991]
第一作者单位:[1]Loma Linda Univ, Sch Med, Dept Anesthesiol, Loma Linda, CA 92350 USA[2]Zhejiang Univ, Affiliated Hosp 2, Sch Med, Dept Neurol, Hangzhou 310009, Zhejiang, Peoples R China
通讯作者:
通讯机构:[1]Loma Linda Univ, Sch Med, Dept Anesthesiol, Loma Linda, CA 92350 USA[*1]Loma Linda Univ, Dept Anesthesiol, 11041 Campus St,Risley Hall, Loma Linda, CA 92354 USA
推荐引用方式(GB/T 7714):
Tong Lu-sha,Shao An-wen,Ou Yi-bo,et al.Recombinant Gas6 augments Axl and facilitates immune restoration in an intracerebral hemorrhage mouse model[J].JOURNAL OF CEREBRAL BLOOD FLOW AND METABOLISM.2017,37(6):1971-1981.doi:10.1177/0271678X16658490.
APA:
Tong, Lu-sha,Shao, An-wen,Ou, Yi-bo,Guo, Zhen-ni,Manaenko, Anatol...&Zhang, John H..(2017).Recombinant Gas6 augments Axl and facilitates immune restoration in an intracerebral hemorrhage mouse model.JOURNAL OF CEREBRAL BLOOD FLOW AND METABOLISM,37,(6)
MLA:
Tong, Lu-sha,et al."Recombinant Gas6 augments Axl and facilitates immune restoration in an intracerebral hemorrhage mouse model".JOURNAL OF CEREBRAL BLOOD FLOW AND METABOLISM 37..6(2017):1971-1981