1.中国中医科学院 中医基础理论研究所,北京 100700
2.中国中医科学院 中药研究所,道地药材与品质保障全国重点实验室,北京 100700
3.昆明理工大学 生命科学与技术学院,昆明 650500
4.昆明医科大学 云南省公共卫生与生物安全重点实验室,昆明 650500
田纪祥,硕士,从事中药新药及保健食品研发研究,E-mail:jxtian@icmm.ac.cn
夏雪山,博士,从事分子病毒学研究,E-mail:oliverxia2000@aliyun.com
张华敏,博士,从事经典名方考证及其现代科学内涵解析研究,E-mail:hmzhang@icmm.ac.cn
收稿:2024-09-06,
录用:2024-09-23,
网络出版:2024-09-29,
纸质出版:2024-12-05
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田纪祥,张彤彤,常雨宁等.百里香药茶对人冠状病毒OC43体内外增殖的影响[J].中国实验方剂学杂志,2024,30(23):81-89.
TIAN Jixiang,ZHANG Tongtong,CHANG Yuning,et al.Effect of Thyme Herbal Tea on Proliferation of Human Coronavirus OC43 in vitro and in vivo[J].Chinese Journal of Experimental Traditional Medical Formulae,2024,30(23):81-89.
田纪祥,张彤彤,常雨宁等.百里香药茶对人冠状病毒OC43体内外增殖的影响[J].中国实验方剂学杂志,2024,30(23):81-89. DOI: 10.13422/j.cnki.syfjx.20241504.
TIAN Jixiang,ZHANG Tongtong,CHANG Yuning,et al.Effect of Thyme Herbal Tea on Proliferation of Human Coronavirus OC43 in vitro and in vivo[J].Chinese Journal of Experimental Traditional Medical Formulae,2024,30(23):81-89. DOI: 10.13422/j.cnki.syfjx.20241504.
目的
2
探究百里香药茶(BLX)对人冠状病毒OC43(HCoV-OC43)的体内外抗病毒活性及作用机制。
方法
2
通过超高效液相色谱-质谱(UPLC-MS)分析BLX化学成分,利用HCoV-OC43细胞模型检测BLX的体外毒性及其对该病毒的抑制作用,采用时间差异给药法检测药物作用阶段,实时荧光定量聚合酶链式反应(Real-time PCR)法检测病毒基因拷贝数,利用HCoV-OC43小鼠模型检测BLX的体内毒性及其对小鼠体质量和生存周期变化的影响,通过免疫组化技术检测脑和肺组织中病毒蛋白表达。
结果
2
从BLX中鉴定出11种化合物;在HCoV-OC43感染的HRT-18细胞中,BLX的半数毒性浓度(CC
50
)为(13 859.56±319) mg·L
-1
,半数抑制浓度(IC
50
)为(1 439.09±200) mg·L
-1
,其选择指数范围为8.26~11.44。与病毒组比较,BLX在1 500、1 000、500 mg·L
-1
剂量下均可明显抑制病毒复制(
P<
0.05,
P<
0.01),该药物在病毒复制早期即可发挥抗病毒作用,且对病毒吸附过程的干扰大于对病毒入胞过程的干扰(
P<
0.05)。在HCoV-OC43感染的小鼠模型中,BLX在1 200、600 mg·kg
-1
·d
-1
剂量下可缓解被感染小鼠的症状、延长生存期并降低死亡率,有效抑制脑组织中(
P<
0.01)和肺组织(
P<
0.01)中病毒核衣壳mRNA表达水平;BLX在1 200 mg·kg
-1
剂量下可抑制脑组织(
P<
0.01)和肺组织(
P<
0.01)中病毒核衣壳蛋白的表达。
结论
2
BLX含有多种具有抗病毒活性的化学成分,可在体内外抑制HCoV-OC43复制,该药物可能通过干扰病毒吸附等方式发挥其抗病毒活性。该研究为冠状病毒感染治疗提供了候选药物,为BLX的进一步开发应用提供了理论参考。
Objective
2
To investigate the effects of thyme herbal tea (BLX) on the proliferation of human coronavirus OC43 (HCoV-OC43)
in vitro
and
in vivo
.
Method
2
The chemical composition of BLX was analyzed by UPLC-MS. The cytotoxicity of BLX in HRT-18 cells and the effect of BLX treatment on the proliferation of HCoV-OC43 in cells were analyzed. Copies of viral gene were detected by real-time PCR. The effect of BLX treatment on the life cycle of HCoV-OC43 was detected by time-of-addition assay. The maximum tolerated dose of BLX and the influences of BLX on the body weight and survival time of suckling mice infected with HCoV-OC43 were determined. The expression of viral protein in the brain and lung tissue was analyzed by immunohistochemistry.
Result
2
There were 11 chemical components identified in BLX by UPLC-MS. BLX showed the 50% cytotoxic concentration (CC
50
) of (13 859.56±319) mg·L
-1
, the median inhibitory concentration (IC
50
) of (1 439.09±200) mg·L
-1
, and the selection index of 8.26-11.44 for HCoV-OC43 in HRT-18 cells. Compared with the cells infected with HCoV-OC43, BLX at the concentrations of 1 500, 1 000, 500 mg·L
-1
inhibited the proliferation of this virus (
P<
0.05,
P<
0.01). BLX exhibited antiviral effect in the early stage of virus infection, and the inhibition role in the attachment stage was more significant than that in the entry stage (
P<
0.05). In the suckling mice infected with HCoV-OC43, BLX at 1200 and 600 mg·kg
-1
·d
-1
alleviated the symptoms, prolonged the survival period, reduced the death rate, and down-regulated the mRNA level of nucleocapsid protein in the mice. Moreover, BLX at 1 2
00 mg·kg
-1
·d
-1
down-regulated the expression of nucleocapsid protein in the brain (
P<
0.01) and the lung (
P<
0.01).
Conclusion
2
BLX contained multiple antiviral ingredients. It inhibited the proliferation of HCoV-OC43 both
in vitro
and
in vivo
by interference with viral attachment. This study provides theoretical reference for the treatment of acute respiratory tract infection with HCoV-OC43 and for further development and application of BLX.
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