Characterization of thrombin/factor Xa inhibitors in Rhizoma Chuanxiong through UPLC-MS-based multivariate statistical analysis.

Autor: Yang YY; School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331 People's Republic of China., Wu ZY; School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331 People's Republic of China., Xia FB; State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao SAR People's Republic of China., Zhang H; School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331 People's Republic of China., Wang X; School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331 People's Republic of China., Gao JL; Academy of Chinese Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053 Zhejiang People's Republic of China., Yang FQ; School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331 People's Republic of China., Wan JB; State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao SAR People's Republic of China.; College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan China.
Jazyk: angličtina
Zdroj: Chinese medicine [Chin Med] 2020 Aug 31; Vol. 15, pp. 93. Date of Electronic Publication: 2020 Aug 31 (Print Publication: 2020).
DOI: 10.1186/s13020-020-00376-0
Abstrakt: Background: The dry root and rhizome of Ligusticum chuanxiong Hort., or Chuanxiong, has been used as a blood-activating and stasis-removing traditional Chinese medicine for 1000 years. Our previous studies have shown the inhibitory activity on platelet and thrombin (THR) of Chuanxiong. THR and factor Xa (FXa) play significant roles in the coagulation cascade and their inhibitors are of valuable in the treatment of thromboembolic diseases. The aim of the present study is to screen THR and FXa inhibitors from Chuanxiong.
Methods: Four extracts [ethyl acetate (EA), butanol (BA) and remained extract (RE) from 75% ethanol extract, and water extract (WE)] of Chuanxiong were prepared, and their THR/FXa inhibitory activities were assessed in vitro. Following silica-gel column chromatography (SC), the active EA extract and BA extract was further partitioned, respectively. Their active fractions (EA-SC1 to EA-SC5; BA-SC1 to BA-SC5) were obtained and analyzed by LC-MS. After modeling by the principal component analysis (PCA) and orthogonal partial least squares discriminate analysis (OPLS-DA), the specific marker compounds were predicted and identified. Their enzyme inhibitory was assessed in vitro and interactions with THR/FXa were investigated by molecular docking analysis.
Results: Chuanxiong EA extract showed strong activity against THR and BA extract was more effective in inhibiting FXa activity, and their fractions exhibited obvious difference in enzyme inhibitory activity. Furthermore, marker compounds a - h were predicted by PCA and OPLS-DA, and their chemical structures were identified. Among them, senkyunolide A, Z -ligustilide, ferulic acid and senkyunolide I (IC 50 was determined as 0.77 mM) with potential THR inhibitory activity, as well as isochlorogenic acid A with FXa inhibitory activity were screened out. It was found that the four components could interact with the active site of THR, and the binding energy was lower than - 5 kcal/mol. Isochlorogenic acid A were bound to the active site of FXa, and the binding energy was - 9.39 kcal/mol. The IC 50 was determined as 0.56 mM.
Conclusions: THR/FXa inhibitory components in different extracts of Chuanxiong were successfully characterized by the method of enzyme inhibition activity assays with ultra performance liquid chromatography-quadrupole time of flight mass spectrometry-based multivariate statistical analysis.
Competing Interests: Competing interestsThe authors declare that they have no competing interests.
(© The Author(s) 2020.)
Databáze: MEDLINE
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