
Introduction
Results and Discussion
如圖1所示,與對照組比較,ox-LDL顯著促進HUVECs增殖、遷移、成管;與模型組比較,TMP-PF或辛伐他汀顯著抑制HUVECs增殖、遷移、成管。然而,與TMP-PF組比較,TMP-PF + miR-126抑制劑組HUVECs增殖、遷移顯著增加;與模型組比較,TMP-PF + miR-126抑制劑組HUVECs成管未被抑制,提示miR-126 抑制劑可能抵消了TMP-PF對HUVECs增殖、遷移、成管的抑制作用。因此,TMP-PF可能通過調(diào)節(jié)miR-126而抑制ox-LDL誘導的血管新生。


如圖2所示,與對照組比較,ox-LDL誘導的HUVECs中miR-126表達顯著降低,細胞上清中VEGF水平顯著升高;與模型組比較,TMP-PF組miR-126表達顯著升高,VEGF水平顯著降低。與TMP-PF組比較,TMP-PF + miR-126抑制劑組VEGF水平升高。研究提示,在ox-LDL誘導的HUVECs中,TMP-PF可能通過上調(diào)miR-126表達而降低VEGF水平。

如圖3所示,與對照組比較,ox-LDL誘導的HUVECs中VEGF、VEGFR2、bFGF和FGFR1蛋白表達顯著升高;與模型組比較,TMP-PF顯著降低VEGF、VEGFR2、bFGF和FGFR1蛋白表達,辛伐他汀顯著降低了VEGFR2和bFGF蛋白表達。然而,與模型組比較,TMP-PF + miR-126 抑制劑組 VEGF、VEGFR2蛋白表達未顯著降低,提示miR-126 抑制劑可能抵消了TMP-PF對VEGF、VEGFR2的抑制作用。因此,在ox-LDL誘導的HUVECs中,TMP-PF可能通過上調(diào)miR-126表達而抑制VEGF、VEGFR2蛋白表達。

Conclusion

圖4 TMP-PF通過調(diào)節(jié)miR-126/VEGF/VEGFR2信號通路抑制ox-LDL誘導的血管新生
第一作者簡介


通信作者


高蕊,女,醫(yī)學博士,主任醫(yī)師,博士生導師,國家中醫(yī)局中藥臨床藥理重點學科學科帶頭人,國家藥監(jiān)局中藥臨床研究與評價重點實驗室主任,中國中醫(yī)科學院臨床藥理研究所副所長,全國中醫(yī)臨床優(yōu)秀人才、中國中醫(yī)科學院中青年名中醫(yī)。
Yahui Yuana,b,1, Rong Yuana,b,1, Qiqi Xina,b, Yu Miaoa,b, Ying Chenc, Rui Gaod,e,*, Weihong Conga,b,*
a Laboratory of Cardiovascular Diseases, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing 100091, China
b National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing 100091, China
c School of Health Economics and Management, Nanjing University of Chinese Medicine, Nanjing 210023, China
d Institution of Clinical Pharmacology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing 100091, China
e Key Laboratory for Clinical Research and Evaluation of Traditional Chinese Medicine, National Medical Products Administration, Beijing 100091, China
1 These authors contributed equally and listed as co-first authors.
*Corresponding authors.
Abstract
Angiogenesis in atherosclerosis (AS) promotes plaque destabilization. miR-126 has a significant role in angiogenesis. Tetramethylpyrazine (TMP) and paeoniflorin (PF) have anti-atherosclerotic effects. However, the miR-126-related mechanisms of TMP and PF combination (TMP-PF) on angiogenesis in AS have not been understood. To explore the mechanism of TMP-PF on angiogenesis in AS targeting miR-126. Human umbilical vein endothelial cells (HUVECs) were assigned into the control, model, TMP-PF, TMP-PF?+?miR-126 inhibitor, and simvastatin groups. HUVECs were transfected with miR-126 inhibitor or negative control, incubated with oxidized low-density lipoprotein (ox-LDL) to establish AS model, and then treated with TMP-PF or simvastatin. Cell proliferation, migration, and tube formation assays are conducted, and the expression of angiogenesis-related factors were detected by enzyme-linked immunosorbent assay (ELISA) and Western blotting. The expression level of miR-126 was confirmed by polymerase chain reaction (PCR).
ox-LDL promoted HUVECs proliferation, migration, and tube formation, downregulated miR-126 expression, and increased the expression of VEGF, VEGFR2, bFGF, and FGFR1. TMP-PF inhibited proliferation, migration, and tube formation, upregulated miR-126 expression and decreased the expression of VEGF, VEGFR2, bFGF, and FGFR1 in ox-LDL-induced HUVECs. However, the effects of TMP-PF on angiogenesis and the expression of miR-126, VEGF, VEGFR2, and FGFR1 were abolished by miR-126 inhibitor. TMP-PF suppressed angiogenesis in AS by regulating miR-126/VEGF/VEGFR2 pathway, which might elucidate the underlying mechanism of TMP-PF in alleviating AS.
YUAN Y H, YUAN R, XIN Q Q, et al. Tetramethylpyrazine and paeoniflorin combination (TMP-PF) inhibits angiogenesis in atherosclerosis via miR-126/VEGF/VEGFR2 signaling pathway[J]. Journal of Future Foods, 2024, 4(3): 280-287. DOI:10.1016/j.jfutfo.2023.07.010.
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