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146.0400
2.5153
.1739
.0516
1.6211
3.5506
Low
85.1598
5.2746
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0.0
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Ganoderma lucidum, an important medicinal fungus in traditional Chinese medicine, has long been known as the "immortal herb" due to its broad pharmacological activity and good safety. Triterpenoids in Ganoderma lucidum are its main active components, possessing significant immunomodulatory, anti-tumor, anti-inflammatory, and antioxidant biological activities. 12-Hydroxyganoderic acid D (CAS No.: 942950-96-1) is an important triterpene secondary metabolite in Ganoderma lucidum and has attracted widespread attention in the field of natural product pharmacology in recent years. This paper systematically reviews the chemical structure and physicochemical properties, plant origin and extraction methods, pharmacological activity, mechanism of action, druggability evaluation, and clinical application prospects of 12-hydroxygazhid acid D, aiming to provide theoretical basis and reference for in-depth research and development of this compound.
12-Hydroxygazhi acid D belongs to the ganodera acid triterpene compound, with a molecular formula of C_30H_46O_7 and a molecular weight of 530.6580. Its structural feature is a typical triterpene backbone, with multiple hydroxyl and carboxyl functional groups, especially hydroxyl modification at the C-12 position, which gives it unique chemical properties. In terms of physicochemical properties, the LogP value of 12-hydroxygadolin acid D is 2.5153, indicating moderate lipid solubility that facilitates cell membrane penetration; the polar surface area (TPSA) is 146.0400, indicating high molecular polarity that may affect bioavailability and penetration ability. Low water solubility (0.0516 mg/mL) suggests limited solubility in the aqueous phase. The blood-brain barrier has a relatively low penetration ability, indicating that its main target may be limited to peripheral tissues. The hERG channel inhibition test was negative, indicating a low risk of cardiotoxicity. The Ames mutagenic test result was 0.0, indicating that the compound had no obvious genotoxicity.
12-Hydroxygaderma acid D is mainly extracted from the fruiting body and mycelium of Ganoderma lucidum. Ganoderma is a fungus of the genus Ganoderma in the Polypore family, widely distributed across many regions of Asia, with China, Japan, and South Korea being especially rich in wild and artificially cultivated resources. The triterpene content of Ganoderma lucidum is greatly affected by growth environment, variety, harvest time, and processing methods.
The extraction method typically uses organic solvent extraction combined with chromatography separation technology. Common extraction solvents include methanol, ethanol, and ethyl acetate. The general process is: first, dry and crush Ganoderma lucidum, then extract the crude triterpene mixture using ultrasound-assisted or reflux extraction methods; Subsequently, the process was separated and purified using silica gel column chromatography and reversed-phase high-performance liquid chromatography (RP-HPLC), ultimately yielding high-purity 12-hydroxygazhi acid D. In recent years, the application of supercritical CO_2 extraction and membrane separation technologies has improved extraction efficiency and purity, while reducing the use of organic solvents, aligning with the concept of green chemistry.
12-Hydroxygazhid acid D exhibits significant pharmacological activity in various in vitro and in vivo models, playing an especially important role in immunomodulation.
As a representative compound of Ganoderma triterpenes, 12-hydroxy-Ganoderium acid D can regulate the body's immune response and promote the balance of immune cell functions. Research shows that this compound can enhance the phagocytic ability of macrophages, promote the maturation of dendritic cells, and activate T cell proliferation and cytokine secretion. Its mechanism of action involves regulating various immune-related signaling pathways and key molecules, such as TLR4, STAT3, NFKB1, etc., to regulate inflammatory responses and immune tolerance.
12-Hydroxygazhid acid D reduces the expression of pro-inflammatory cytokines such as TNF-α and IL-6 by inhibiting the nuclear factor κB (NF-κB) signaling pathway, thereby alleviating inflammatory responses. It shows potential therapeutic effects for chronic inflammatory disease models such as arthritis and inflammatory bowel disease.
Some studies report that 12-hydroxygazhid acid D can inhibit the proliferation and migration of various tumor cells, induce apoptosis, and may influence immune escape mechanisms in the tumor microenvironment by regulating transcription factors such as STAT3 and FOXP3, thereby exerting anti-tumor immune effects.
In addition, 12-hydroxygazhi acid D also exhibits certain antioxidant activity, scavenging free radicals, reducing oxidative stress damage, and protecting tissue cell function.
The pharmacological effects of 12-hydroxygazhid acid D are mainly achieved through multi-target and multi-pathway coordinated regulation. Its key targets and mechanisms of action include:
TLR4 (Toll-like receptor 4): As a key receptor in innate immunity, TLR4 recognizes pathogen-associated molecular patterns (PAMPs) and activates downstream signaling pathways. 12-Hydroxygazhi acid D modulates TLR4-mediated signaling to affect immune cell activation and regulate inflammatory responses.
STAT3 (Signal Transduction and Transcription Activator 3): STAT3 plays a central role in immune regulation, cell proliferation, and tumorigenesis. 12-Hydroxygadermic acid D can inhibit abnormal activation of STAT3, restore immune cell function, and suppress tumor cell growth.
NFKB1 (nuclear factor κB subunit): The NF-κB signaling pathway is a key regulatory node for inflammation and immune responses. 12-Hydroxygazhi acid D reduces pro-inflammatory cytokine expression by inhibiting NFKB1 activation, thereby alleviating inflammatory states.
IL2, IL10, IFNG (cytokines): regulate various cytokines secreted by T cells, promoting immune response balance. 12-Hydroxygazhi acid D can regulate the expression of these cytokines, enhancing the adaptive response of the immune system.
TGFB1 (transforming growth factor β1) and FOXP3 (regulatory T cell transcription factor): involved in immune tolerance and autoimmune regulation. 12-Hydroxygadermic acid D regulates these factors, helping to maintain immune homeostasis and prevent immune disorders.
CTLA4 (cytotoxic T lymphocyte-associated antigen 4) and STAT4: regulate T cell activity and differentiation. 12-Hydroxygazhid acid D modulates immune cell function by affecting these targets.
In summary, 12-hydroxygazhi acid D achieves its combined immunomodulatory and anti-inflammatory and anti-tumor pharmacological effects through the synergistic action of multiple targets and pathways.
The druggability parameters of 12-hydroxygazhid acid D indicate that it has certain potential for drug development. Although the molecular weight of 530.6580 is slightly higher than the 500 Da recommended by the Lipinski rule, it is still within an acceptable range. A LogP value of 2.5153 indicates moderate lipid solubility, which is beneficial for cell membrane penetration. The TPSA value of 146.0400 is relatively high, indicating strong polarity and possibly affecting oral bioavailability.
Its low water solubility (0.0516 mg/mL) is a major challenge in its development, potentially limiting its absorption and distribution in the body. The low blood-brain barrier penetration rate means its role in the central nervous system is limited, but it also reduces the risk of CNS toxicity. hERG channel inhibition is negative, and Ames tests show no mutagenicity, indicating high safety.
Currently, pharmacokinetic studies on 12-hydroxygazhid acid D are limited. Preliminary data suggest poor oral absorption, good metabolic stability in vivo, and mainly processing by hepatic metabolic enzyme systems. In the future, further systematic ADME (Absorption, Distribution, Metabolism, Excretion) and toxicological assessments are needed to optimize dosage forms and administration regimens.
Based on the significant activity of 12-hydroxygazhi acid D in immunoregulation, anti-inflammatory, and antitumor effects, its clinical application prospects are broad. First, in immune-related diseases such as autoimmune diseases, allergic diseases, and immunodeficiency states, 12-hydroxygazhi acid D is expected to act as an immunomodulator to restore immune balance and alleviate symptoms. Second, its anti-inflammatory properties make it a potential therapeutic drug for chronic inflammatory diseases such as rheumatoid arthritis and inflammatory bowel disease. Moreover, its antitumor activity offers new possibilities in the field of adjuvant therapy, especially in regulating the tumor immune microenvironment.
However, current clinical research is still in its early stages and lacks systematic clinical trial data. Future research should focus on its pharmacokinetic characteristics, formulation optimization, and safety evaluation, while integrating modern molecular biology techniques to deeply explore its mechanisms of action and target regulation. Multidisciplinary collaboration is promoting 12-hydroxygazhi acid D from the laboratory to clinical applications, which will greatly promote innovation in natural product drugs.
12-Hydroxygazhi acid D, as an important triterpene active ingredient in Ganoderma lucidum, demonstrates broad pharmacological activity and good safety due to its unique chemical structure and multi-target immunomodulatory effects. Its potential in immunomodulation, anti-inflammation, and anti-tumor fields provides valuable resources for the development of natural product drugs. Although there are still certain challenges in druggability and clinical application, with the advancement of extraction and purification techniques, pharmacokinetic research, and clinical evaluation, 12-hydroxygazhi acid D is expected to become an important representative of the new generation of immunomodulators and natural medicines. Future research should strengthen the elucidation of its mechanisms of action and its clinical translation, promoting its widespread application in modern medicine.
Shenshuai
Wenjing
Hedandan
