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| Carnosic acid (CA) is a rosemary- and sage-derived phenolic diterpene that functions as a redox-active, pro-electrophilic phytochemical. It is best classified as a natural product / nutraceutical lead rather than an approved anticancer drug. Standard abbreviation: CA. Its most defensible mechanistic identity is bifunctional redox modulation: oxidation-enabled KEAP1 sensing with NRF2 activation in stress-responsive normal tissues, but context-dependent ROS elevation and stress-pathway disruption in cancer cells. At present, its oncology relevance is predominantly experimental, with no established regulatory deployment as a cancer therapeutic. Primary mechanisms (ranked):
Bioavailability / PK relevance: CA is lipophilic and orally bioavailable in animal studies, but exposure is formulation-dependent and strongly shaped by oxidation, metabolism, and matrix effects. Brain distribution has been reported after rosemary-extract administration in rodents, supporting CNS relevance more than robust systemic oncology exposure. Translation is constrained by chemical lability and by the likelihood that many direct anticancer in-vitro concentrations are difficult to sustain clinically without optimized delivery. In-vitro vs systemic exposure relevance: Much of the anticancer literature uses roughly 10–50 µM, sometimes higher. That range is mechanistically useful but often above plausible exposure from ordinary dietary rosemary intake, and likely above many supplement-level free-plasma exposures. Accordingly, cancer-cell killing data should be interpreted as lead-compound pharmacology, not as proof that culinary or standard nutraceutical exposure reproduces the same tumor effects in humans. Clinical evidence status: Preclinical. There are cell-line and animal data across multiple tumor types, plus combination studies suggesting chemosensitization in selected models, but no robust human RCT evidence establishing CA as a stand-alone or standard adjunct anticancer therapy. Carnosic acid (CA) natural antioxidant diterpene found in rosemary and sage.-used in the food industry as a flavouring agent and to provide a major source of natural antioxidants Pathways: -Inhibit the PI3K/Akt pathway, which is typically overactivated in many cancers. -inhibits ERK activation, reducing cell proliferation. -JNK and p38 MAPK: Activation of these kinases by carnosic acid may contribute to stress responses leading to cell cycle arrest or apoptosis. -Block the activation of NF-κB, -Induce apoptosis by disturbing mitochondrial membrane potential, leading to the release of cytochrome c and activation of caspases. -Dual role: as an antioxidant under normal conditions and, in the context of cancer cells, it can induce ROS production beyond a critical threshold. -Interfere with STAT3 activation, -AMPK Activation -Inhibition of Angiogenesis and Metastasis -Induction of endoplasmic reticulum (ER) stress -At lower concentrations, carnosic acid might exhibit antioxidant activity, protecting cells by scavenging free radicals. However, cancer cells often have altered redox balances which can make them more vulnerable to further ROS increases. -While carnosic acid has antioxidant properties in some contexts, it is typically observed to have a prooxidant effect in cancer cells under specific conditions, particularly at concentrations that favor ROS accumulation and the subsequent induction of apoptotic cell death -10-100uM, or 10–100 mg/kg for achieving anticancer effects. -Typically available in standardized rosemary extracts. Carnosic Acid (CA) — Pathway / Axis Effects (Cancer vs Normal)
TSF legend: P: 0–30 min (primary/rapid effects; direct redox interactions) · R: 30 min–3 hr (acute signaling + stress responses) · G: >3 hr (gene-regulatory adaptation; phenotype outcomes) AD and Carnosic AcidCarnosic acid (CA) is a rosemary- and sage-derived phenolic diterpene with significant Alzheimer’s disease relevance, chiefly as a pro-electrophilic neuroprotective agent rather than as a direct anti-amyloid drug. It is best classified in AD as a pleiotropic small-molecule neuroprotective natural product that is oxidatively activated under conditions of cellular stress, enabling selective KEAP1/NRF2 pathway engagement. Standard abbreviation: CA. The strongest AD rationale is reduction of oxidative stress, neuroinflammation, amyloidogenic processing, and downstream neuronal injury, with supporting animal and cell data and recent prodrug work, but no established human efficacy standard or approved AD deployment. Primary mechanisms (ranked):
Bioavailability / PK relevance: Oral rosemary-extract studies in rodents detected small quantities of CA and trace CA metabolites in brain, supporting BBB-relevant exposure, but absolute brain exposure appears limited and formulation-sensitive. This is one reason newer prodrug strategies such as diAcCA are being explored to improve brain delivery and disease-modifying potential. In-vitro vs systemic exposure relevance: Much of the mechanistic AD literature uses low-micromolar cell exposure, often in pretreatment paradigms. Those concentrations are pharmacologically informative, but they should not be assumed to arise from ordinary dietary rosemary intake. The AD case is therefore strongest as a brain-directed lead-compound / prodrug platform rather than proof that routine dietary exposure is sufficient. Clinical evidence status: Preclinical. There are multiple cell and animal studies supporting neuroprotection, anti-inflammatory effects, reduced amyloid-related pathology, and cognitive benefit, but there is no robust human RCT evidence establishing CA as an approved or standard AD therapy. AD mechanistic interpretation
TSF legend: P: 0–30 min · R: 30 min–3 hr · G: >3 hr |
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| Tumor cell invasion is a critical process in cancer progression and metastasis, where cancer cells spread from the primary tumor to surrounding tissues and distant organs. This process involves several key steps and mechanisms: 1.Epithelial-Mesenchymal Transition (EMT): Many tumors originate from epithelial cells, which are typically organized in layers. During EMT, these cells lose their epithelial characteristics (such as cell-cell adhesion) and gain mesenchymal traits (such as increased motility). This transition is crucial for invasion. 2.Degradation of Extracellular Matrix (ECM): Tumor cells secrete enzymes, such as matrix metalloproteinases (MMPs), that degrade the ECM, allowing cancer cells to invade surrounding tissues. This degradation facilitates the movement of cancer cells through the tissue. 3.Cell Migration: Once the ECM is degraded, cancer cells can migrate. They often use various mechanisms, including amoeboid movement and mesenchymal migration, to move through the tissue. This migration is influenced by various signaling pathways and the tumor microenvironment. 4.Angiogenesis: As tumors grow, they require a blood supply to provide nutrients and oxygen. Tumor cells can stimulate the formation of new blood vessels (angiogenesis) through the release of growth factors like vascular endothelial growth factor (VEGF). This not only supports tumor growth but also provides a route for cancer cells to enter the bloodstream. 5.Invasion into Blood Vessels (Intravasation): Cancer cells can invade nearby blood vessels, allowing them to enter the circulatory system. This step is crucial for metastasis, as it enables cancer cells to travel to distant sites in the body. 6.Survival in Circulation: Once in the bloodstream, cancer cells must survive the immune response and the shear stress of blood flow. They can form clusters with platelets or other cells to evade detection. 7.Extravasation and Colonization: After traveling through the bloodstream, cancer cells can exit the circulation (extravasation) and invade new tissues. They may then establish secondary tumors (metastases) in distant organs. 8.Tumor Microenvironment: The surrounding microenvironment plays a significant role in tumor invasion. Factors such as immune cells, fibroblasts, and signaling molecules can either promote or inhibit invasion and metastasis. |
| 5869- | CA, | Carnosic Acid Induces Antiproliferation and Anti-Metastatic Property of Esophageal Cancer Cells via MAPK Signaling Pathways |
| - | in-vitro, | ESCC, | KYSE150 |
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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