Laboratory of Applied Pharmacology, Faculty of Pharmaceutical Science, Tokyo University of Science.
Biol Pharm Bull. 2024;47(7):1307-1313. doi: 10.1248/bpb.b23-00843.
Airway ciliary cells are components of the mucociliary transport system and play an important role in sweeping out small particles, such as bacteria and viruses, towards the oropharynx by the action of beating cilia. Several lines of evidence have shown that the ciliary beat is under the regulation of the purinergic system; however, the subtype of receptor and the intracellular signaling pathways involved in the activation of ciliary movement remain to be elucidated. In addition, although the activity of ciliary movement comprises two parameters, the ciliary beat frequency (CBF) and ciliary bend angle (CBA), few reports have analyzed CBA. In this study, we examined the effects of ATP and other purinergic ligands on both CBF and CBA and demonstrated that the purinergic signaling requirements for CBF and CBA are different, with CBF mediated by P2Y receptor activation and CBA mediated by the P2X4 receptor.
气道纤毛细胞是黏液纤毛传输系统的组成部分,通过纤毛的摆动作用将小颗粒(如细菌和病毒)向口咽部清除。有几条证据表明纤毛的摆动受嘌呤能系统的调节;然而,参与纤毛运动激活的受体亚型和细胞内信号通路仍有待阐明。此外,尽管纤毛运动的活性包括两个参数,即纤毛摆动频率(CBF)和纤毛弯曲角度(CBA),但很少有报道分析 CBA。在这项研究中,我们研究了 ATP 和其他嘌呤能配体对 CBF 和 CBA 的影响,并表明 P2Y 受体激活介导 CBF,而 P2X4 受体介导 CBA。