Introduction/Overview
Murrayone (CAS number: 19668-69-0) is a coumarin natural product isolated from the Rutaceae plant Murraya paniculata. As a class of natural compounds with diverse biological activities, coumarin and its derivatives have shown significant pharmacological potential in anti-inflammatory, anti-tumor, antioxidant and other fields. In recent years, quercetin has become one of the hotspots in natural product pharmacology research due to its unique chemical structure and significant biological activity, especially in preventing cancer metastasis and regulating inflammatory responses.
Cancer metastasis is the main cause of death in cancer patients, and existing treatment methods have significant limitations in inhibiting metastasis. Developing efficient and low toxicity chemopreventive agents is of great clinical significance. As a natural chemopreventive agent, quercetin has demonstrated its ability to regulate various inflammatory mediators and signaling pathways, effectively inhibiting the migration and invasion of tumor cells, demonstrating its potential application value in cancer prevention and treatment.
This article provides a systematic review of the chemical structure and physicochemical properties, plant sources and extraction methods, pharmacological activity and mechanism of action of naringenin. Combined with pharmacological evaluation and pharmacokinetic data, it explores its clinical application prospects and future research directions, aiming to provide theoretical basis and research ideas for the drug development of naringenin.
Chemical structure and physicochemical properties
Jiu Li Xiang ketone belongs to the coumarin class compounds, with a molecular formula of C15H14O4 and a molecular weight of 258.2730. Its chemical structural characteristics are coumarin skeleton, containing specific substituents that endow it with unique biological activity. The LogP value of quercetin is 2.0755, indicating that it has moderate lipid solubility and is beneficial for penetrating cell membranes and the blood-brain barrier (BBB). Its topological polar surface area (TPSA) is 56.51 Å ², further supporting its excellent membrane permeability and bioavailability.
Low water solubility (0.0373 mg/mL) suggests limited solubility in aqueous phase, which may pose certain challenges for formulation development. It is worth noting that quercetin has high blood-brain barrier permeability, suggesting its potential application value in central nervous system related diseases. The hERG channel inhibition test was negative, indicating a low risk of cardiac toxicity. The Ames mutagenicity test result was 0.9, indicating a low risk of genetic toxicity.
In summary, the physicochemical properties of quercetin support its potential as a drug candidate molecule, particularly in the treatment of central nervous system and systemic inflammatory diseases.
Plant sources and extraction methods
Murraya paniculata is mainly derived from the Rutaceae plant, which is widely distributed in the tropical and subtropical regions of Asia and has traditionally been used to treat a variety of inflammatory and infectious diseases. The leaves, branches, and roots of Jiu Li Xiang contain abundant coumarin compounds, among which Jiu Li Xiang ketone is one of the representative components.
The extraction process usually uses organic solvent extraction combined with column chromatography separation technology. The specific process includes:
- Ingredient Preparation Collect fresh or dried leaves of Chinese chestnut and crush them into fine powder.
- Solvent extraction Use ethanol or methanol for multiple reflux extractions to improve the extraction rate.
- Concentration and Separation After the extraction solution is concentrated by rotary evaporation, it is separated and purified by silica gel column chromatography or high-performance liquid chromatography (HPLC).
- Structural Identification Confirm the structure of quercetin using techniques such as nuclear magnetic resonance (NMR), mass spectrometry (MS), and infrared spectroscopy (IR).
In recent years, the application of ultrasound assisted extraction and microwave-assisted extraction technologies has significantly improved the extraction efficiency and purity of quercetin, and is more in line with the principles of green chemistry. In the future, by combining modern separation technologies such as preparative HPLC and molecular imprinting techniques, it is expected to achieve efficient industrial production of quercetin.
Pharmacological activity research
The pharmacological activities of quercetin mainly focus on anti-inflammatory and anti-tumor aspects, especially showing significant effects in preventing cancer metastasis.
anti-inflammatory activity
Inflammation is the common pathological basis of various diseases, and quercetin exerts its anti-inflammatory effect by regulating multiple inflammatory mediators and signaling pathways. In vitro and in vivo studies have shown that quercetin can significantly inhibit the expression of pro-inflammatory factors such as tumor necrosis factor (TNF), interleukin-6 (IL-6), and inducible nitric oxide synthase (NOS2).
In addition, quercetin has inhibitory effects on cyclooxygenase-1 (PTGS1) and cyclooxygenase-2 (PTGS2), reduces prostaglandin synthesis, and alleviates inflammatory reactions. Its regulation of the nuclear factor kappa B (NFKB1) signaling pathway further blocks the transduction of inflammatory signals, reducing the activation and migration of inflammatory cells.
Jiu Li Xiang ketone also acts on transient receptor potential channels TRPV1 and TRPA1, regulating neuroinflammation and pain response, demonstrating potential analgesic effects. It inhibits caspase 1 (CASP1), reduces the activation of inflammasomes, prevents cell pyroptosis, and enhances cell survival rate.
Antitumor and prevention of cancer metastasis
Jiu Li Xiang ketone, as a chemopreventive agent, can inhibit the migration and invasion of tumor cells and block the key steps of cancer metastasis. Its mechanism of action involves the regulation of multiple signaling pathways, especially the inhibition of the signal transduction and transcription activator 3 (STAT3) pathway. STAT3 plays a central role in tumor cell proliferation, survival, and metastasis. Jiu Li Xiang ketone inhibits the transcriptional activity of STAT3 by blocking its phosphorylation and nuclear translocation, thereby reducing the expression of tumor related genes.
In vitro cell experiments have shown that quercetin can reduce the migration speed and invasion ability of tumor cells, while inducing cell cycle arrest and apoptosis. Animal model studies further confirm that quercetin significantly reduces the formation of tumor metastases and prolongs the survival of tumor animals.
In addition, quercetin also has a regulatory effect on immune cells and inflammatory factors in the tumor microenvironment, improving immune surveillance function and enhancing the body's anti-tumor ability.
Mechanism of action and molecular targets
The pharmacological effects of quercetin involve synergistic regulation of multiple targets and pathways, with the main targets including:
- IL-6 Jiu Li Xiang ketone inhibits the expression and secretion of IL-6, reducing the amplification of pro-inflammatory signals.
- STAT3 By blocking the activation of STAT3, inhibiting its mediated gene transcription, and blocking signals related to tumor cell proliferation and metastasis.
- CASP1 Inhibit inflammasome activation and reduce pro-inflammatory cell pyroptosis.
- TRPV1/TRPA1 Regulating neuroinflammation and pain signal transduction.
- PTGS1/PTGS2 Inhibit prostaglandin synthesis and alleviate inflammatory response.
- TNF Reduce TNF levels, alleviate inflammation and the pro cancer effects of the tumor microenvironment.
- NOS2 Inhibit inducible nitric oxide synthase, reduce oxidative stress and inflammatory damage.
- NFKB1 Block the nuclear factor kappa B signaling pathway and reduce the expression of inflammatory factors.
The synergistic regulation of these targets enables quercetin to exert multiple protective effects in anti-inflammatory and anti-tumor processes. Molecular docking and cell signaling pathway analysis further revealed that quercetin changes its conformation and activity by binding to key proteins, blocking abnormal signal transmission and restoring cellular homeostasis.
Evaluation of drug properties and pharmacokinetics
The pharmacological evaluation of quercetin shows good potential for drug development. Its molecular weight is moderate (258.2730), which conforms to Lipinski's rule. The LogP value of 2.0755 indicates appropriate lipid solubility, which is beneficial for in vivo distribution and cell membrane penetration. The TPSA is 56.51 Å ², supporting its excellent oral absorption and blood-brain barrier permeability.
Low water solubility (0.0373 mg/mL) may limit its bioavailability, and solubility needs to be improved through formulation techniques such as nanocarriers and solid dispersions. The hERG channel inhibition test was negative, reducing the risk of cardiac toxicity. The Ames test result is 0.9, indicating a low risk of genetic toxicity and good safety.
Pharmacokinetic studies have shown that quercetin is rapidly absorbed and widely distributed after oral administration, especially effective in penetrating the blood-brain barrier, making it suitable for treating central nervous system diseases. Its metabolism in the body is mainly carried out through the liver enzyme system, and the metabolites are stable and have no significant toxicity. The excretion pathway is mainly through the kidneys, with a moderate half-life, supporting the design of daily dosing regimens.
Further systematic toxicological evaluation and preclinical pharmacokinetic studies are needed in the future to clarify the safe dosage range and drug interactions, laying the foundation for clinical translation.
Clinical application prospects and prospects
Jiu Li Xiang ketone, as a natural coumarin compound, has shown broad clinical application prospects due to its significant anti-inflammatory and cancer metastasis prevention activities. It has significant potential in the field of cancer chemoprevention, especially for metastasis inhibition and tumor recurrence prevention and control in high-risk populations.
In addition, quercetin regulates various inflammatory mediators and signaling pathways, making it suitable for adjuvant therapy of chronic inflammatory diseases such as rheumatoid arthritis, inflammatory bowel disease, and neuroinflammatory related diseases. Its excellent blood-brain barrier permeability gives it potential advantages in the treatment of neurodegenerative diseases and brain tumors.
Future research should focus on:
- Preclinical model validation Evaluate the efficacy and safety of quercetin in different types of cancer and inflammatory diseases using more complex animal models.
- Optimization of drug formulations Develop a new drug delivery system to address the issue of poor water solubility and improve bioavailability and targeting.
- In depth analysis of the mechanism Combining multiple omics techniques to reveal the panoramic molecular network of the action of quercetin and explore potential new targets.
- Clinical trial design Conduct early clinical trials to evaluate its pharmacokinetics, pharmacodynamics, and safety, providing a basis for subsequent drug registration.
Through interdisciplinary collaboration, quercetin is expected to become a new generation of safe and effective anti-tumor and anti-inflammatory drugs, providing a new option for clinical treatment.
Conclusion
Jiu Li Xiang ketone, as a natural coumarin compound derived from Jiu Li Xiang plant, exhibits excellent anti-inflammatory and anti cancer metastasis activities due to its unique chemical structure and good physicochemical properties. Its multi-target and multi pathway mechanism of action provides an important example for the pharmacological research of natural products. The evaluation of drug properties shows that it has good potential for drug development, especially in the fields of central nervous system diseases and tumor chemoprevention, with broad prospects.
In the future, by combining modern medicinal chemistry, molecular biology, and clinical medicine research methods, we will deeply explore the mechanism of action and clinical application value of quercetin, promote its transition from laboratory to clinical use, drive the innovative development of natural product drugs, and benefit the vast number of patients.
