In recent years, Professor Jia Wei's team has established a new pharmacokinetics-based approach to pharmacokinetics. At the molecular level, the multi-component Agents including compound Chinese medicine and natural products are described in the whole body. Metabolic and interaction processes. Recently, the team collaborated with Professor Liu Ping of Shanghai University of Traditional Chinese Medicine to develop a pharmacokinetic study of the compound Chinese medicine Huangqi Decoction using a high-throughput metabolomics platform and a multi-component drug bioinformatics data analysis method. The results of the study were recently published online in the journal International Pharmacology & Therapeutics (IF 7.266).
Pharmacokinetics (PK) are methods for characterizing the absorption, distribution, metabolism, and excretion (ADME) of drug molecules over time in vivo. The metabolic kinetics of multi-component drugs, including compound Chinese medicine, has always been a "bottleneck" due to the complexity of chemical composition and the diversity of medicinal ingredients in the body.
The “bottleneck†of this technology and methodology includes (1) lack of holisticity, with one or several components to represent and predict a compound drug system containing hundreds or thousands of chemical components; (2) Lack of dynamic changes, focusing only on the data of drug prototype molecules without involving drug interactions and the whole process of drug metabolism in vivo; (3) lack of biochemical effects, only focusing on chemical changes of drug molecules without organisms on drugs Metabolic response information.
The ADME of compound Chinese medicine in the body is a process of interaction between a multi-component chemical system and a multi-level multi-target biological system. This complex in vivo process cannot be simplified with one or several pharmaceutical ingredients under the reductionist thinking. reduction. Because it is impossible to break through the existing bottlenecks in theory and methodology, the current PK method for quantitative detection of a single compound is difficult to truly describe the intrinsic and dynamic metabolism of the Chinese medicine. Therefore, as a "black box", the compound Chinese medicine has not been able to obtain objective evaluation in vivo. The results obtained by simple reduction methods can not truly reflect the clinical value of the compound Chinese medicine with synergistic effect in the compatibility of traditional Chinese medicine prescriptions.
New strategies for multidrug pharmacokinetic research
Professor Jia Wei collaborated with Dr. Lan Lan from the West China College of Pharmacy, Sichuan University, and in 2010 jointly proposed a new strategy to simultaneously monitor multi-component pharmacokinetics using metabolomics - multidrug pharmacokinetic Poly-PK (poly- Pharmacokinetics). This new idea uses metabolomics technology to simultaneously qualitatively and quantitatively detect the chemical composition of the drug itself, the secondary metabolic components produced in the body, and the endogenous metabolites of the organism, combined with bioinformatics methods. By comparing and comparing the obtained data, it obtains far more drug metabolism information than traditional pharmacokinetic methods, and reflects the metabolic effects of the complex components. Under this new research strategy, the research team successfully applied Poly-PK to the study of the effects of Pu'er tea on human metabolism in 2012, and initially verified its effectiveness and feasibility. In 2015, Professor Jia Wei was invited to write and summarize the new strategy of Poly-PK in multi-component Chinese herbal medicine in the supplement of Science Journal on Traditional Medicine Research.
Application of Poly-PK in Traditional Chinese Medicine Research
In order to realize the true application of Poly-PK research method in traditional Chinese medicine, Professor Jia Wei teamed up with Professor Liu Ping, who is carrying out the phase I clinical study of compound Chinese medicine Huangqi Decoction, to take traditional Chinese medicine Huangqi Decoction (including Astragalus and Licorice) for healthy volunteers. The effects of various chemical components of the drug before and after the drug in the body, the metabolism process, and the impact on the body's metabolic network were systematically studied.
The results showed that Huangqi Decoction contained 84 different chemical components. 292 kinds of metabolites were detected in volunteers before taking the drug, and 532 metabolites were detected after taking the drug. Comparing the metabolites at each time point before and after taking the drug, it was found that there were 485 metabolites, and this change was related to taking Huangqi Tang. According to bioinformatics analysis, 56 ingredients in Huangqi Decoction are absorbed into the blood in the form of prototype components, and 292 new ingredients (secondary metabolites of Huangqi Decoction) are the original ingredients in the Huangqi Decoction. Newly produced by metabolism. In addition, there are 166 kinds of metabolites (endogenous metabolites) in the body that have undergone significant changes due to the taking of jaundice. On this basis, the correlation of these three sets of data was systematically analyzed. At the same time, after the ingredients of Astragalus membranaceus are absorbed and metabolized in the body, it can significantly regulate dozens of endogenous metabolite pathways in the body, which means that the components in the Astragalus membranaceus can affect the metabolism of the body at the same time, that is, produce Pharmacodynamic effect.
Verification of Poly-PK research ideas in clinical trials
For the first time in this work, the validity and technical feasibility of the Poly-PK research ideas were verified in clinical trials. Comparing the Poly-PK results with the conventional drug PK results, the five drug components quantitatively detected by UPLC-TQMS (triple quadrupole) are identical to the corresponding results in Poly-PK, but the latter can provide information. Far beyond the former, the type and amount of compounds detected, the observed drug interactions, and the acquired metabolic information (pharmacodynamic information) are unmatched by traditional PK methods based on a single compound.
From the concept of Poly-PK, to the use of Pu'er tea in the proof of concept study in the population, to the true clinical pharmacokinetic study, this work is very meaningful. Poly-PK is also suitable for the study of compound chemical (Western medicine). Poly-PK integrates drug molecular profiling techniques and quantitative metabolomics techniques, using a series of multivariate statistical analysis methods to simultaneously systematically evaluate the metabolic changes of hundreds of pharmaceutical ingredients and the metabolic response (pharmacodynamics) of humans. The study demonstrated the complex (in yellow sputum soup) drug prototype components, the metabolic secondary components, the metabolic changes that occur under the influence of the drug (xanthine soup), and the interrelationship between the three, depicted at the system level. The whole process of ADME in vivo in complex drug systems.
Meite Mapping will use a new pharmacokinetic strategy based on metabolomics strategy established by the research team to assist customers in portraying the overall, dynamic metabolism and mutual metabolism of multi-component drugs (including chemicals and Chinese medicines) at the molecular level. The process of action, using high-throughput metabolomics platform and established multi-component drug bioinformatics data analysis methods, vigorously carry out multi-field pharmacokinetic studies.
main reference
1. Lan K, Jia W. An integrated metabolomics and pharmacokinetics strategy for multi-component drugs evaluation. Curr Drug Metab. 2010;11(1):105-14.
2. Xie G, Zhao A, Zhao L, Chen T, Chen H, Qi X, Zheng X, Ni Y, Cheng Y, Lan K, Yao C, Qiu M, Jia W. Metabolic fate of tea polyphenols in humans. J Proteome Res. 2012;11(6):3449-57.
3. Lan K, Xie G, Jia W. Towards polypharmacokinetics: pharmacokinetics of multicomponent drugs and herbal medicines using a metabolomics approach. Evidence-based complementary and alternative medicine. Evid Based Complement Alternat Med. 2013;2013:819147.
4. Jia W, Fang T, Wang X, Xie G. The polypharmacokinetics of herbal medicine. Science, The Art and Science of Traditional Medicine. 2015; S76. (URL link: https:// Publishing/collections/art-and-science-traditional-medicine-part-3-global-impact-traditional)
5. Xie G, Wang S, Zhang H, Zhao A, Liu J, Ma Y, Lan K, Ni Y, Liu C, Liu P, Chen T, Jia W. Poly-Pharmacokinetic Study of a Multicomponent Herbal Medicine in Healthy Chinese Volunteers. ClinPharmacolTher. 2017 Jul 4. doi: 10.1002/cpt.784. (Online Published)
The original text is reproduced from the blog of Professor Jia Wei Science Network. Please do not reprint without permission!
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