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1.上海中医药大学 附属曙光医院,上海 201203
2.上海中医药大学 中西医结合研究院,上海 201203
刘静雯,硕士,从事中西医结合防治大肠癌的研究,E-mail:15538191501@163.com
李琦,博士,教授,主任医师,从事中西医结合防治肿瘤的研究,E-mail:Lzwf@hotmail.com
收稿日期:2021-12-24,
网络出版日期:2022-03-30,
纸质出版日期:2022-09-05
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刘静雯,王瑜,冯媛媛等.补肾解毒方调控肿瘤相关巨噬细胞M2极化对大肠癌转移的影响[J].中国实验方剂学杂志,2022,28(17):60-66.
LIU Jingwen,WANG Yu,FENG Yuanyuan,et al.Bushen Jiedu Prescription Inhibits Metastasis of Colorectal Cancer by Regulating Polarization of M2-TAMs in Vivo[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(17):60-66.
刘静雯,王瑜,冯媛媛等.补肾解毒方调控肿瘤相关巨噬细胞M2极化对大肠癌转移的影响[J].中国实验方剂学杂志,2022,28(17):60-66. DOI: 10.13422/j.cnki.syfjx.20221025.
LIU Jingwen,WANG Yu,FENG Yuanyuan,et al.Bushen Jiedu Prescription Inhibits Metastasis of Colorectal Cancer by Regulating Polarization of M2-TAMs in Vivo[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(17):60-66. DOI: 10.13422/j.cnki.syfjx.20221025.
目的
2
探讨补肾解毒方调控肿瘤相关巨噬细胞(TAMs)极化对大肠癌转移的影响。
方法
2
构建C57BL/6小鼠大肠癌皮下移植瘤模型,随机分为正常组、补肾解毒方低、高剂量(11.2、22.4 g·kg
-1
)组,待肿瘤生长至1.5~2.0 cm
3
时剥离瘤体。剥离瘤体28 d后处死小鼠,观察小鼠肺转移情况。苏木素-伊红(HE)染色观察小鼠肺组织病理学变化,免疫荧光(IF)染色检测肺转移灶肿瘤细胞缺氧、凋亡变化;流式细胞术检测肿瘤组织中M1型和M2型巨噬细胞分群比;实时荧光定量聚合酶链式反应(Real-time PCR)检测肿瘤组织中M2型巨噬细胞(M2-TAMs)极化相关基因(Arg1、CD206、CD163)的表达。
结果
2
正常组、补肾解毒方低、高剂量组小鼠转移率分别为70%、40%、10%。与正常组比较,补肾解毒方低、高剂量组转移率均降低,证明补肾解毒方抑制小鼠肺转移;HE染色表明,与正常组比较,补肾解毒方低、高剂量组肺转移灶中肿瘤细胞浸润显著减少(
P
<
0.01);免疫荧光染色结果表明,与正常组比较,补肾解毒方低、高剂量组肺转移灶中肿瘤细胞凋亡增多、缺氧环境改善;Real-time PCR结果显示,与正常组比较,补肾解毒方低、高剂量组肿瘤组织中M2型巨噬细胞极化基因(Arg1、CD206、CD163)表达显著下降(
P
<
0.01);流式细胞术显示,与正常组M2型巨噬细胞分群率为34.867%,补肾解毒方低、高剂量组M2型巨噬细胞分群率分别为22.033%、11.633%,显著降低(
P
<
0.01);与补肾解毒方低剂量组比较,补肾解毒方高剂量组M2型巨噬细胞分群率显著降低(
P
<
0.01), 证明补肾解毒方显著抑制肿瘤组织内M2型巨噬细胞激活,且呈剂量依赖性。
结论
2
补肾解毒方通过抑制肿瘤组织中M2型巨噬细胞激活抑制小鼠大肠癌肺转移。
Objective
2
To explore the inhibitory effect of Bushen Jiedu prescription (BSJDP) on the metastasis of colorectal cancer (CRC) via activation of M2 tumor-associated macrophages (M2-TAMs)
in vivo
.
Method
2
The model of xenograft tumor was established with C57BL/6 mice, and then the model mice were randomly assigned into blank control group, Bushen Jiedu recipe-low dose (11.2 g·kg
-1
) group (BSJDP-L), and Bushen Jiedu Recipe-high dose (22.4 g·kg
-1
) group (BSJDP-H). Tumors were abolished when the volume reached 1.5-2.0 cm
3
. The mice were sacrificed 28 days post tumor abolishing and then the lung metastasis was observed. Histopathological changes in lung metastasis were examined by hematoxylin-eosin (HE) staining of metastasis tissues, and immunofluorescence (IF) staining was employed to observe the effect of BSJDP on tumor apoptosis and hypoxia. Flow cytometry was performed to analyze the macrophages M1/M2 ratio of tumor tissue. The expression levels of the genes (Arg1, CD206, and CD163) associated with the polarization of M2-TAMs were determined by Real-time fluorescent quantitative polymerase chain reaction (Real-time PCR).
Result
2
The metastasis rate was 70%, 40%, and 10% in the blank control group, BSJDP-L group, and BSJDP-H group, respectively. The lower metastasis rates of BSJDP-L and BSJDP-H groups proved that BSJDP significantly inhibited lung metastasis of CRC. Compared with the blank control group, BSJDP-L and BSJDP-H reduced the tumor cell infiltration in tumor tissue (
P
<
0.01), increased the apoptosis of tumor cells, alleviated the hypoxic environment, and down-regulated the expression of Arg1, CD206, and CD163 in the tumor tissue (
P
<
0.01). In addition, the ratio of M2 macrophages ranked in a descending order of blank control group (34.867%)
>
BSJDP-L group (22.033%)
>
BSJDP-H group (11.633%) (
P
<
0.01).
Conclusion
2
BSJDP inhibits the lung metastasis of CRC by inhibiting the activation of M2-TAMs in the tumor microenvironment.
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