Research Institute, Children's Hospital of Philadelphia, Suite 1208, 3615 Civic Center Boulevard, Philadelphia, PA 19104, USA.
J Neurovirol. 2013 Jun;19(3):219-27. doi: 10.1007/s13365-013-0166-x. Epub 2013 Jun 14.
The associations between the neurokinin-1 receptor (NK-1R), substance P (SP), and HIV-1 were investigated in neurosphere-derived cultures of microglial-depleted human fetal brain cells (HFBC). Full-length NK-1R was identified in HFBC cultures. SP treatment of the HFBC increased intracellular calcium mobilization and decreased electrical impedance, both of which were blocked by the NK-1R antagonist aprepitant. SP treatment of HIV-1-infected HFBC upregulated HIV-1 expression. These data show that human neural cells grown from neurospheres express functional full length NK-1R that is responsive to SP, and that SP enhanced HIV-1 infection in HBFC.
研究人员调查了神经激肽-1 受体(NK-1R)、P 物质(SP)与 HIV-1 之间的关联,研究对象是从小鼠大脑细胞中分离出的少突胶质细胞神经球衍生培养物。研究人员在 HFBC 培养物中鉴定出全长 NK-1R。SP 处理 HFBC 会增加细胞内钙动员,并降低电阻抗,这两种反应均被 NK-1R 拮抗剂 aprepitant 阻断。SP 处理 HIV-1 感染的 HFBC 会上调 HIV-1 的表达。这些数据表明,从神经球中生长的人神经细胞表达功能性全长 NK-1R,对 SP 有反应,并且 SP 增强了 HBFC 中的 HIV-1 感染。