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| Lignan found in bark of some magnolia species. Magnolol (MAG) — a bioactive biphenolic compound from Magnolia officinalis derived from the bark (roots and branches) of Magnolia species such as M. officinalis, M. obovata, and M. grandiflora The two main bioactive compounds isolated from these plants are MAG (5,5ʹ-diallyl-2,2ʹ-dihydroxybiphenyl) and Honokiol (3,5ʹ-diallyl-4,2ʹ-dihydroxybiphenyl) (Fig. 1) which are phenolic regioisomers. In the bark extracts of Magnolia plants, the composition of MAG ranges from 1 to 10%, while Honokiol comprises 1 to 5% Magnolol is a biphenolic neolignan isolated from the bark of Magnolia officinalis. It is structurally related to honokiol and is studied for anti-inflammatory, antioxidant, antimicrobial, and neuroactive effects. In preclinical oncology models, magnolol is reported to modulate NF-κB, STAT3, PI3K/AKT, MAPK, Wnt/β-catenin, and redox pathways, with downstream effects on cell-cycle arrest, apoptosis, invasion/EMT, and angiogenesis. Oral bioavailability is limited and many cytotoxic concentrations reported in vitro are in the tens of µM range, often above typical systemic levels from standard supplementation. major pathways and molecular targets involved in magnolol’s anticancer actions: -Apoptosis: ↑ Bax, ↓ Bcl-2, ↑ cytochrome c, ↑ caspase-9, ↑ caspase-3 -Arrests cell cycle at G0/G1 or G2/M phase:↓ Cyclin D1, CDK4, CDK6, Cyclin B1, CDK1 -Inhibits NF-κB activation: ↓ IκBα, COX-2, TNF-α -Inhibits PI3K, Akt, and mTOR phosphorylation -Suppresses angiogenesis: ↓ Bcl-XL, Mcl-1, VEGF, cyclin D1 -Inhibits β-catenin nuclear translocation -increase ROS production in tumor cells → triggers mitochondrial apoptosis -Magnolol activates Nrf2 in normal cells → upregulates HO-1, NQO1: Protects normal tissue from oxidative stress during chemotherapy or inflammation. Most in-vitro IC50 values fall in the 10–100 µM range, often above typical systemic exposure.
Time-Scale Flag (TSF): P / R / G
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| Caspases are a cysteine protease that speed up a chemical reaction via pointing their target substrates following an aspartic acid residue.1 They are grouped into apoptotic (caspase-2, 3, 6, 7, 8, 9 and 10) and inflammatory (caspase-1, 4, 5, 11 and 12) mediated caspases. Caspase-1 may have both tumorigenic or antitumorigenic effects on cancer development and progression, but it depends on the type of inflammasome, methodology, and cancer. Catalase is an enzyme found in nearly all living cells exposed to oxygen. Its primary role is to protect cells from oxidative damage by catalyzing the conversion of hydrogen peroxide (H₂O₂), a potentially damaging byproduct of metabolism, into water (H₂O) and oxygen (O₂). This detoxification process is crucial because excess H₂O₂ can lead to the formation of reactive oxygen species (ROS) that damage proteins, lipids, and DNA. Catalase and Cancer Oxidative Stress and Cancer: Cancer cells often experience increased levels of oxidative stress due to rapid proliferation and metabolic changes. This stress can lead to DNA damage, promoting tumorigenesis. Catalase helps mitigate oxidative stress, and its expression can influence the survival and proliferation of cancer cells. Expression Levels in Different Cancers: Overexpression: In some cancers, such as breast cancer and certain types of leukemia, catalase may be overexpressed. This overexpression can help cancer cells survive in oxidative environments, potentially leading to more aggressive tumor behavior. Downregulation: Conversely, in other cancers, such as colorectal cancer, reduced catalase expression has been observed. This downregulation can lead to increased oxidative stress, contributing to tumor progression and metastasis. Prognostic Implications: Survival Rates: Studies have shown that high levels of catalase expression can be associated with poor prognosis in certain cancers, as it may enable cancer cells to resist apoptosis (programmed cell death) induced by oxidative stress. Some types of cancer cells have been reported to exhibit lower catalase activity, possibly increasing their vulnerability to oxidative damage under certain conditions. This vulnerability has even been exploited in some therapeutic strategies (for example, approaches that generate excess H₂O₂ or other ROS specifically targeting cancer cells have been researched). |
| 4529- | MAG, | Effectiveness of Magnolol, a Lignan from Magnolia Bark, in Diabetes, Its Complications and Comorbidities—A Review |
| - | Review, | Diabetic, | NA |
Query results interpretion may depend on "conditions" listed in the research papers. Such Conditions may include : -low or high Dose -format for product, such as nano of lipid formations -different cell line effects -synergies with other products -if effect was for normal or cancerous cells
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