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| Betulinic acid "buh-TOO-li-nik acid" is a natural compound with antiretroviral, anti malarial, anti-inflammatory and anticancer properties. It is found in the bark of several plants, such as white birch, ber tree and rosemary, and has a complex mode of action against tumor cells. -Betulinic acid is a naturally occurring pentacyclic triterpenoid -vitro concentrations range from 1–100 µM, in vivo studies in rodents have generally used doses from 10–100 mg/kg Precursor: Betulin, via oxidation at C-28 Lipophilicity: High (poor aqueous solubility) Betulinic acid — Betulinic acid is a naturally occurring lupane-type pentacyclic triterpenoid with broad experimental anticancer activity, especially against melanoma, neuroectodermal, glioma, breast, colorectal, and other solid-tumor models. It is a natural-product small molecule, usually abbreviated BA or BetA, and is found in several plants, classically birch bark, with semi-synthesis commonly starting from betulin. A distinguishing feature is preferential induction of tumor-cell death through direct mitochondrial injury with relative sparing of many non-neoplastic cells in preclinical systems. Its main translational limitation is very poor aqueous solubility with correspondingly weak oral/systemic developability unless formulation or derivatization is used. Primary mechanisms (ranked):
Bioavailability / PK relevance: Betulinic acid is highly lipophilic and poorly water-soluble, which strongly limits oral absorption and systemic exposure. PK behavior is formulation-dependent, and much of the translational literature focuses on nanoparticles, liposomes, micelles, conjugates, or topical delivery rather than conventional oral dosing. In-vitro vs systemic exposure relevance: Many in-vitro anticancer studies use low-to-mid micromolar concentrations, which are often difficult to reproduce reliably in vivo with unformulated parent betulinic acid. Accordingly, mechanistic findings are useful biologically, but direct concentration matching to standard oral/systemic use is often poor unless enhanced-delivery systems are used. Clinical evidence status: Strong preclinical and formulation-development literature; very limited human oncology evidence. Cancer-facing clinical development appears to remain early-phase/topical, with orphan designation for topical metastatic melanoma but no FDA approval for that indication. Betulinic acid itself is not an established approved anticancer drug. -half-life reports vary 3-5 hrs?. Reported half-life varies by formulation and species; several studies report multi-hour systemic persistence.BioAv -hydrophobic molecule with relatively poor water solubility. Main Cancer action -Direct mitochondrial targeting in cancer cells -Minimal effect on normal cells Key pathways -Mitochondrial membrane permeabilization -ROS-mediated apoptosis -Caspase-independent death Chemo relevance: Generally compatible, Not a redox buffer Pathways: - often induce ROS production - ROS↑ related: MMP↓(ΔΨm), ER Stress↑, UPR↑, GRP78↑, Ca+2↑, Cyt‑c↑, Caspases↑, DNA damage↑, cl-PARP↑, HSP↓ - Lowers AntiOxidant defense in Cancer Cells(Often associated with reduced redox buffering capacity in tumor cells (e.g., GSH depletion); NRF2 direction model-dependent.): NRF2↓, SOD↓, GSH↓ - May Raise AntiOxidant defense in Normal Cells: NRF2↑, SOD↑, GSH↑, Catalase↑ Reports suggest relative sparing of normal cells and preservation of antioxidant capacity in some models - lowers Inflammation : NF-kB↓(typ), COX2↓, p38↓ (context-dependent; often stress-activated), Pro-Inflammatory Cytokines : IL-1β↓, TNF-α↓, IL-6↓, IL-8↓ - inhibit Growth/Metastases : , MMPs↓, MMP2↓, MMP9↓, TIMP2, IGF-1↓, VEGF↓, ROCK1↓, FAK↓, NF-κB↓, TGF-β↓, α-SMA↓, ERK↓ - reactivate genes thereby inhibiting cancer cell growth : P53↑, HSP↓(model-dependent), Sp proteins↓, - cause Cell cycle arrest : TumCCA↑, cyclin D1↓, CDK2↓, CDK4↓, - inhibits Migration/Invasion : TumCMig↓, TumCI↓, FAK↓, ERK↓, EMT↓, TOP1↓, - inhibits glycolysis (secondary to mitochondrial stress) ATP depletion : HIF-1α↓, PKM2↓, cMyc↓, GLUT1↓, LDH↓, LDHA↓, HK2↓, PFKs↓, PDKs↓, HK2↓, ECAR↓, GRP78↑(ER stress), GlucoseCon↓ - inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, EGFR↓, - inhibits Cancer Stem Cells in some studies : CSC↓, GLi1↓, β-catenin↓, OCT4↓, - Others: PI3K↓(typ), AKT↓(typ), JAK↓, STAT↓, β-catenin↓, AMPK↓(AMPK is often activated during metabolic stress), ERK↓, JNK, - Synergies: chemo-sensitization, chemoProtective, RadioSensitizer, Others(review target notes), Neuroprotective, Cognitive, Renoprotection, Hepatoprotective, CardioProtective, - Selectivity: Cancer Cells vs Normal Cells Mechanistic profile
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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. |
| 2757- | BetA, | Betulinic Acid Inhibits Glioma Progression by Inducing Ferroptosis Through the PI3K/Akt and NRF2/HO-1 Pathways |
| - | in-vitro, | GBM, | U251 |
| 5591- | BetA, | Advances and challenges in betulinic acid therapeutics and delivery systems for breast cancer prevention and treatment |
| - | Review, | BC, | NA |
| 2729- | BetA, | Betulinic acid in the treatment of tumour diseases: Application and research progress |
| - | Review, | Var, | NA |
| 2719- | BetA, | Betulinic Acid Restricts Human Bladder Cancer Cell Proliferation In Vitro by Inducing Caspase-Dependent Cell Death and Cell Cycle Arrest, and Decreasing Metastatic Potential |
| - | in-vitro, | CRC, | T24/HTB-9 | - | in-vitro, | Bladder, | UMUC3 | - | in-vitro, | Bladder, | 5637 |
| 2742- | BetA, | Betulinic acid impairs metastasis and reduces immunosuppressive cells in breast cancer models |
| - | in-vitro, | BC, | MDA-MB-231 | - | in-vivo, | BC, | 4T1 | - | in-vitro, | BC, | MCF-7 |
| 2741- | BetA, | Betulinic acid triggers apoptosis and inhibits migration and invasion of gastric cancer cells by impairing EMT progress |
| - | in-vitro, | GC, | SNU16 | - | in-vitro, | GC, | NCI-N87 | - | in-vivo, | NA, | NA |
| 2738- | BetA, | Betulinic Acid Suppresses Breast Cancer Metastasis by Targeting GRP78-Mediated Glycolysis and ER Stress Apoptotic Pathway |
| - | in-vitro, | BC, | MDA-MB-231 | - | in-vitro, | BC, | BT549 | - | in-vivo, | NA, | 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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