Effects of Heat-sensitive Moxibustion Intervention on the Expression of PD-1 and PI3K/Akt/mTOR Signaling Pathway-related Proteins in Rats with Allergic Rhinitis
10.11969/j.issn.1673-548X.2025.09.012
- VernacularTitle:热敏灸干预对变应性鼻炎大鼠PD-1及PI3K/Akt/mTOR信号通路相关蛋白表达的影响
- Author:
Meng LIN
1
;
Jun XIONG
;
Yuxin LI
Author Information
1. 330004 南昌,江西中医药大学
- Publication Type:Journal Article
- Keywords:
Allergic rhinitis;
PI3K/Akt/mTOR;
PD-1;
Immunomodulation
- From:
Journal of Medical Research
2025;54(9):62-70
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effects of heat-sensitive moxibustion intervention on the expression of programmed death re-ceptor-1(PD-1)and its downstream PI3K/Akt/mTOR signaling pathway-related proteins in ovalbumin(OVA)-induced allergic rhinitis(AR)rats,and to elucidate the potential mechanism of its therapeutic treatment of AR.Methods Sixty SD rats were randomly divided into the blank group(n=10)and the modeling group(n=50),and AR models were prepared with normal saline and OVA,re-spectively.After successful modeling,the modeled rats were randomly divided into model group(n=10),moxibustion group(n=20),positive drug group(n=10)and PD-1 inhibitor group(n=10).The blank group had no intervention;the model group and the positive drug group were given normal saline/fluticasone propionate nasal spray nasal drops,8μl/side,once a day for 21 days;the PD-1 inhibitor group was blocked from the intervention for7days before sensitization was stimulated;the moxibustion group was treated with thermal mox-ibustion moxa strips suspended on the"feishu point"(once a day,40minutes each time),and the changes of the body and tail tempera-tures were recorded in the course of the intervention,for a total of 21 days.After the last treatment,the moxibustion group was divided into moxibustion group(n=9)and thermal moxibustion group(n=11)according to the changes in body and tail temperature.After the inter-vention,hematoxylin-eosin staining was used to observe the morphology of nasal mucosa,immunofluorescence and Western blot was used to detect the expressions of PD-1 and PI3K/Akt/mTOR-related proteins,and real-time fluorescence quantitative polymerase chain re-action(RT-qPCR)was used to detect the expression of related genes in spleen tissues.Results Compared with the blank group,the expression of PD-1 and PI3K,Akt,mTOR and their phosphorylation levels were significantly elevated in the rats of model group(P＜0.05).After the intervention of thermal moxibustion,the protein and mRNA expression of PD-1 and PI3K,Akt,mTOR,as well as the ratios of p-PI3K/PI3K,p-Akt/Akt,and p-mTOR/mTOR were significantly decreased compared with that of the model group(P＜0.05),and the down-regulation tendency was similar to that of the moxibustion group,the positive drug group and the PD-1 inhibitor group.Conclusion Thermal moxibustion at the"feishu point"can effectively improve nasal inflammation and tissue damage in AR rats,and its mechanism may be related to the down-regulation of PD-1 expression and the inhibition of downstream PI3 K/Akt/mTOR signa-ling pathway activation.
