Storage conditions：Short-term storage at 2~8℃, long-term storage at -20 ~ -80℃
Tenacissoside I is a C21 steroid natural product derived from the Chinese medicinal herb Marsdenia tenacissima. As an important medicinal plant in traditional Chinese medicine, Tongguan Vine has attracted much attention due to its significant anti-inflammatory, anti-tumor, and immune regulatory effects. Guanguan Vine Glycoside I, as one of its main active ingredients, has shown broad application potential in the field of pharmacology research in recent years. Its unique chemical structure and multi-target regulatory ability make it a potential candidate drug for anti-inflammatory disease 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, pharmacological evaluation, and clinical application prospects of Tongguan Tengzhi I. The aim is to provide theoretical basis and research direction for subsequent basic research and drug development.
Guanguan Vine Glycoside I belongs to the C21 steroid glycoside class, with a molecular formula of C41H62O16 and a molecular weight of 814.9660. Its structural core is a typical steroid skeleton, supplemented by multiple glycosidic groups, giving it high polarity and complex spatial conformation. The LogP value is 3.3123, indicating that it has moderate hydrophobicity, which is conducive to membrane penetration but not excessively hydrophobic and affects solubility. The topological polar surface area (TPSA) is 178.0400, indicating that the molecule contains more polar groups, especially hydroxyl and glycoside moieties, which enhance its ability to bind with biomolecules.
The low water solubility (0.0082 mg/mL) suggests that the solubility of Tongguan Tengzhi I in water is limited, which may affect its bioavailability and the choice of administration method. The low permeability of the blood-brain barrier indicates limited distribution in the central nervous system, which may reduce central nervous system side effects. The hERG channel inhibition test was negative, indicating a low risk of cardiac toxicity. The Ames mutagenicity test showed a value of 0.0, indicating a low risk of genotoxicity and high safety.
Guanguan Vine Glycoside I is mainly present in the whole plant of Marsdenia tenacissima, especially in the dry stem and leaf parts with higher content. Marsdenia tenacissima belongs to the Apocynaceae family and is widely distributed in southern China and Southeast Asia. It is the main source plant of the traditional Chinese medicine "Tongguan Teng". This plant has been used since ancient times to treat diseases such as asthma, rheumatoid arthritis, and tumors.
The common methods for extracting Tongguan Tengzhi I include solvent extraction, column chromatography separation, and high-performance liquid chromatography (HPLC) purification. Generally, ethanol or methanol is used as the extraction solvent to obtain the crude extract through reflux extraction. Subsequently, separation and purification were performed using silica gel column chromatography or reverse phase C18 column, and the purity and structure were confirmed by HPLC and mass spectrometry. In recent years, ultrasound assisted extraction and microwave-assisted extraction techniques have also been applied to improve extraction efficiency and purity. In addition, enzymatic hydrolysis and membrane separation technologies have shown potential in optimizing extraction processes, which can help achieve large-scale production.
The pharmacological activity research of Tongguan Tengzhi I mainly focuses on its anti-inflammatory effect. Multiple in vitro and in vivo experiments have shown that Tongguan Tengzhi I can significantly inhibit the production of inflammatory mediators and the activation of inflammatory signaling pathways, exhibiting good anti-inflammatory effects.
Guanguan Tengzhi I regulates various inflammation related factors, inhibits the expression of pro-inflammatory cytokines such as IL-6 and TNF - α, and reduces inflammation response. In animal models, Guantongteng I significantly reduced edema and cell infiltration at the site of inflammation, alleviating tissue damage. In addition, it has inhibitory effects on inflammation related enzymes such as cyclooxygenase (PTGS1, PTGS2) and inducible nitric oxide synthase (NOS2), reducing the excessive production of prostaglandins and nitric oxide.
Guanguan Tengzhi I can also regulate immune cell function, affect the activation status of macrophages and lymphocytes, and promote the maintenance of immune homeostasis. Its regulatory effect on inflammasomes (such as CASP1) helps to inhibit the inflammatory cascade, reduce cell apoptosis and tissue damage.
Although anti-inflammatory is the main research direction of Guantongteng I, some studies also indicate that it has certain anti-tumor activity, which may inhibit tumor cell proliferation and migration by regulating the STAT3 signaling pathway. In addition, the regulation of pain receptors TRPV1 and TRPA1 suggests their potential application value in alleviating inflammatory pain.
The anti-inflammatory effect of Tongguan Tengzhi I involves multiple signaling pathways and molecular targets, reflecting its characteristics of multi-target and multi pathway synergistic regulation.
IL-6, as a key pro-inflammatory cytokine, promotes inflammatory response and immune regulation by activating the STAT3 signaling pathway. Guanguan Tengzhi I can inhibit the secretion of IL-6 and the phosphorylation of STAT3, block the transcriptional expression of downstream pro-inflammatory genes, and thereby alleviate inflammatory reactions.
NF - κ B is the core transcription factor of inflammatory response, regulating the expression of various inflammatory mediators. Guanguan Tengzhi I exerts anti-inflammatory effects by inhibiting the activation of NF - κ B, reducing the production of pro-inflammatory cytokines (such as TNF - α, IL-6) and inflammatory enzymes (PTGS2, NOS2).
CASP1, as a key component of inflammasomes, participates in the maturation and release of pro-inflammatory cytokines. Guanguan Tengzhi I can inhibit CASP1 activity, reduce the release of inflammatory factors such as IL-1 β, and lower the inflammatory cascade reaction.
TRPV1 and TRPA1 are ion channels that sense inflammatory pain, and Tongtongteng I reduces inflammation related pain and neuroinflammation by regulating these two targets.
Tongguan Tengzhi I inhibits the expression of PTGS1 and PTGS2, reduces prostaglandin synthesis, and alleviates inflammation and pain. At the same time, inhibiting NOS2 reduces excessive nitric oxide production, alleviates oxidative stress and inflammatory damage.
In summary, Tongguan Tengzhi I exhibits significant anti-inflammatory effects by regulating the inflammatory signaling network through multi-target synergistic effects.
The pharmacological evaluation of Guanguan Tengzhi I shows that it has certain potential for drug development, but there are also certain challenges.
The high molecular weight (814.9660) and polarity (TPSA 178.0400) may limit its oral absorption and cell membrane penetration ability. The LogP value of 3.3123 is moderate, which is beneficial for the balance of lipid solubility and water solubility, but low water solubility (0.0082 mg/mL) may affect bioavailability.
The hERG channel inhibition test was negative and the Ames mutagenicity test was 0.0, indicating that the risk of cardiotoxicity and genotoxicity of Guantongteng I is low and the safety is good.
At present, there are few pharmacokinetic studies on Guantongteng I, and preliminary data indicate that its blood-brain barrier permeability is low, which limits its distribution in the central nervous system. Further systematic research is needed on its metabolic pathways and half-life in order to guide dosage form design and optimize dosing regimens.
Due to its poor water solubility, the bioavailability of oral formulations may be limited, and new formulation technologies such as nanocarriers, liposomes, or solid dispersions need to be considered to improve solubility and absorption. Intravenous injection or local administration may also be effective routes.
Guanguan Tengzhi I, as a multi-target anti-inflammatory natural product, has broad clinical application prospects. Its potential therapeutic effects in chronic inflammatory diseases such as rheumatoid arthritis, inflammatory bowel disease, and certain autoimmune diseases are worthy of further exploration. In addition, adjuvant therapy for inflammation related tumors also has certain application value.
Future research should focus on the following aspects:
As a C21 steroidal glycoside natural product with abundant content and significant anti-inflammatory activity in Marsdenia tenacissima, Guanguan Vine Glycoside I exhibits unique advantages in multi-target and multi pathway regulation of inflammatory response. Its good safety and potential clinical application value make it a research hotspot in the fields of natural product pharmacology and new drug development. Although the research on its pharmacokinetics and clinical efficacy is still in its preliminary stage, with the continuous advancement of extraction and purification technology and modern drug development methods, Tongguan Tengzhi I is expected to become a new candidate drug for anti-inflammatory disease treatment. Future systematic research and clinical validation will lay a solid foundation for its clinical translation and promote its widespread application in the field of natural medicine.
