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南京中医药大学 附属医院,南京 210029
Received:14 June 2025,
Revised:2025-08-30,
Accepted:05 September 2025,
Online First:12 September 2025,
Published:05 June 2026
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林思湉,刘元杰,殷艺等.健脾养正消癥方调控USP51抑制低黏附性胃癌进展的机制[J].中国实验方剂学杂志,2026,32(11):97-111.
LIN Sitian,LIU Yuanjie,YIN Yi,et al.Mechanisms of Jianpi Yangzheng Xiaozheng Prescription in Regulating USP51 to Inhibit Progression of Poorly Cohesive Gastric Carcinoma[J].Chinese Journal of Experimental Traditional Medical Formulae,2026,32(11):97-111.
林思湉,刘元杰,殷艺等.健脾养正消癥方调控USP51抑制低黏附性胃癌进展的机制[J].中国实验方剂学杂志,2026,32(11):97-111. DOI: 10.13422/j.cnki.syfjx.20251924.
LIN Sitian,LIU Yuanjie,YIN Yi,et al.Mechanisms of Jianpi Yangzheng Xiaozheng Prescription in Regulating USP51 to Inhibit Progression of Poorly Cohesive Gastric Carcinoma[J].Chinese Journal of Experimental Traditional Medical Formulae,2026,32(11):97-111. DOI: 10.13422/j.cnki.syfjx.20251924.
目的
2
探讨健脾养正消癥方(JPYZXZ)通过调控泛素化特异性蛋白酶51(USP51)治疗低黏附性胃癌(PC-GC)的作用机制。
方法
2
体外实验:采用细胞增殖与活性检测(CCK-8)法和平板克隆形成实验检测不同浓度JPYZXZ(2,4,6 g·L
-1
)对PC-GC细胞系细胞(MKN-45和HGC-27)活力及增殖能力的影响;通过划痕实验和Transwell实验评估细胞迁移能力。利用实时荧光定量聚合酶链式反应(Real-time PCR)和蛋白免疫印迹法(Western blot)分别检测细胞中USP51 mRNA及蛋白水平、锌指E盒结合同源异形盒1(ZEB1)和上皮间充质转化(EMT)标志物[上皮钙黏蛋白(E-cadherin)等]的表达。随后,构建USP51敲减(sh-USP51)和过表达(oe-USP51)的MKN-45及HGC-27稳转细胞株,通过划痕、Transwell实验和Western blot评估其迁移能力及EMT相关蛋白的变化。体内实验:建立MKN-45人胃癌裸鼠皮下移植瘤模型。将30只BALB/c裸鼠随机分为6组[空白(NC)、NC+JPYZXZ、sh-USP51、sh-USP51+JPYZXZ、oe-USP51、oe-USP51+JPYZXZ],每组5只。造模成功后,给药组给予JPYZXZ(30 g·kg
-1
)灌胃干预28 d。期间监测裸鼠体质量及瘤体体积。采用Western blot和免疫组化(IHC)检测瘤组织USP51及EMT相关蛋白表达情况。
结果
2
与空白组比较,JPYZXZ各组和5-FU组的MKN-45和HGC-27细胞克隆形成率、划痕愈合率及Transwell穿膜数显著降低(
P
<
0.05),USP51 mRNA及蛋白表达下降(
P
<
0.05),ZEB1和间质表型蛋白表达降低(如间质钙黏蛋白,波形蛋白)(
P
<
0.05),而上皮表型标志物E-cadherin表达明显升高(
P
<
0.05)。与正常组比较,sh-USP51组USP51的表达下降,oe-USP51组USP51表达明显升高(
P
<
0.05)。与NC组比较,USP51敲减后,胃癌
细胞的迁移和增殖能力显著下降(
P
<
0.01),ZEB1和EMT相关蛋白的表达减少,E-cadherin表达明显升高(
P
<
0.05)。体内实验结果表明JPYZXZ干预能有效抑制裸鼠移植瘤生长(
P
<
0.05),并显著逆转瘤组织中EMT相关蛋白的异常表达(
P
<
0.05)。
结论
2
JPYZXZ治疗低黏附胃癌的机制可能与调控USP51-ZEB1信号抑制EMT进程有关。
Objective
2
To investigate the mechanisms by which Jianpi Yangzheng Xiaozheng prescription (JPYZXZ) treats poorly cohesive gastric carcinoma (PC-GC) through regulation of ubiquitin-specific peptidase 51 (USP51).
Methods
2
In vitro
experiments: Cell viability and proliferation of PC-GC cell lines (MKN-45 and HGC-27) treated with different concentrations of JPYZXZ (2, 4, 6 g·L
-1
) were assessed using Cell Counting Kit-8 (CCK-8) and colony formation assays. Cell migration was evaluated by wound healing (scratch) and Transwell assays. The mRNA and protein expression levels of USP51, zinc finger E-box-binding homeobox 1 (ZEB1), and epithelial-mesenchymal transition (EMT)-related markers (
e.g
., E-cadherin) were detected by quantitative real-time PCR (Real-time PCR) and Western blot, respectively. Subsequently, stable MKN-45 and HGC-27 cell lines with USP51 knockdown (sh-USP51) and overexpression (oe-USP51) were constructed. Their migration ability and EMT-related protein expression were further evaluated by scratch assay, Transwell assay, and Western blot.
In vivo
experiments: A subcutaneous xenograft model of MKN-45 human gastric cancer was established in BALB/c nude mice. Thirty mice were randomly divided into six groups (NC, NC + JPYZXZ, sh-USP51, sh-USP51 + JPYZXZ, oe-USP51, and oe-USP51 + JPYZXZ), with five mice in each group. After successful modeling, mice in the treatment groups were administered JPYZXZ (30 g·kg
-1
) by gavage for 28 days. Body weight and tumor volume were monitored during the experiment. The expression levels of US
P51 and EMT-related proteins in tumor tissues were detected by Western blot and immunohistochemistry (IHC).
Results
2
Compared with the blank group, the colony formation rate, wound healing rate, and number of migrated cells in MKN-45 and HGC-27 cells were significantly reduced in all JPYZXZ groups and the 5-fluorouracil (5-FU) group (
P
<
0.05). The mRNA and protein expression levels of USP51 were decreased (
P
<
0.05). The expression of ZEB1 and mesenchymal phenotype proteins (
e.g
., N-cadherin and vimentin) was reduced (
P
<
0.05), whereas the expression of the epithelial marker E-cadherin was increased (
P
<
0.05). Compared with the control group, USP51 expression was decreased in the sh-USP51 group and increased in the oe-USP51 group (
P
<
0.05). Compared with the NC group, USP51 knockdown significantly reduced the migration and proliferation of gastric cancer cells (
P
<
0.01), decreased the expression of ZEB1 and EMT-related proteins, and increased E-cadherin expression (
P
<
0.05).
In vivo
results showed that JPYZXZ significantly inhibited the growth of xenograft tumors in nude mice (
P
<
0.05) and markedly reversed the abnormal expression of EMT-related proteins in tumor tissues (
P
<
0.05).
Conclusion
2
The therapeutic mechanisms of JPYZXZ in PC-GC may be associated with inhibition of the EMT process via regulation of the USP51-ZEB1 signaling pathway.
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