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| Curcumin is the main active ingredient in Turmeric. Member of the ginger family.Curcumin is a polyphenol extracted from turmeric with anti-inflammatory and antioxidant properties. - Has iron-chelating, iron-chelating properties. Ferritin. But still known to increase Iron in Cancer cells. - GSH depletion in cancer cells, exhaustion of the antioxidant defense system. But still raises GSH↑ in normal cells. - Higher concentrations (5-10 μM) of curcumin induce autophagy and ROS production - Inhibition of TrxR, shifting the enzyme from an antioxidant to a prooxidant - Strong inhibitor of Glo-I, , causes depletion of cellular ATP and GSH - Curcumin has been found to act as an activator of Nrf2, (maybe bad in cancer cells?), hence could be combined with Nrf2 knockdown -may suppress CSC: suppresses self-renewal and pathways (Wnt/Notch/Hedgehog). Curcumin — Curcumin is a turmeric-derived polyphenolic curcuminoid and diarylheptanoid from Curcuma longa, functionally best classified as a natural-product small molecule / nutraceutical candidate with pleiotropic redox, inflammatory, transcriptional, metabolic, and chemosensitizing activity. The standard abbreviation is CUR. It is the principal active pigment of turmeric rhizome, usually studied as purified curcumin, curcuminoid mixtures, turmeric extract, phytosomal curcumin, liposomal curcumin, nanoparticle curcumin, or piperine-enhanced formulations. Its oncology relevance is mechanistically broad but clinically constrained by poor aqueous solubility, rapid metabolism, low free systemic exposure, formulation variability, and insufficient well-powered cancer outcome trials. Primary mechanisms (ranked):
Bioavailability / PK relevance: Conventional oral curcumin has poor systemic bioavailability because of low solubility, low absorption, rapid conjugation, and rapid elimination. Oral trials have used doses up to gram-level daily dosing, but circulating free curcumin is typically low; measured plasma exposure often reflects conjugated curcumin. Piperine, phospholipid/phytosome, micellar, liposomal, nanoparticle, and other enhanced formulations can raise exposure, but each formulation should be treated as a distinct translational entity. Delivery constraints are central for oncology interpretation. In-vitro vs systemic exposure relevance: Common in-vitro anticancer concentrations, often in the low-to-mid micromolar range and sometimes higher, frequently exceed achievable free plasma exposure from standard oral curcumin. Therefore, direct systemic anticancer claims from cell culture should be weighted cautiously unless supported by tissue-local exposure, enhanced formulation data, local delivery, IV/liposomal delivery, or clinically measured pharmacodynamic biomarkers. Clinical evidence status: Preclinical evidence is extensive; human oncology evidence is mainly small human, biomarker, pilot, chemoprevention, adjunctive, symptom-management, and formulation trials. Current authoritative oncology summaries judge evidence inadequate to recommend curcumin-containing products as cancer treatment or as routine adjunct anticancer therapy, although symptom-support areas such as oral mucositis, radiation dermatitis, oxidative-status measures, and quality of life have more suggestive but still confirmatory-level evidence. Clinical studies testing curcumin in cancer patients have used a range of dosages, often between 500 mg and 8 g per day; however, many studies note that doses on the lower end may not achieve sufficient plasma concentrations for a therapeutic anticancer effect in humans. • Formulations designed to improve curcumin absorption (like curcumin combined with piperine, nanoparticle formulations, or liposomal curcumin) are often employed in clinical trials to enhance its bioavailability. -Note half-life 6 hrs. BioAv is poor, use piperine or other enhancers Pathways: - induce ROS production at high concentration. Lowers ROS at lower concentrations curcumin can act as a pro-oxidant when blue light is applied - ROS↑ related: MMP↓(ΔΨm), ER Stress↑, UPR↑, GRP78↑, Cyt‑c↑, Caspases↑, DNA damage↑, cl-PARP↑, HSP↓ - Lowers AntiOxidant defense in Cancer Cells: GSH↓ Catalase↓ HO1↓ GPx↓ but conversely is known as a NRF2↑ activator in cancer - Raises AntiOxidant defense in Normal Cells: ROS↓, NRF2↑, SOD↑, GSH↑, Catalase↑, - lowers Inflammation : NF-kB↓, COX2↓, p38↓, Pro-Inflammatory Cytokines : TNF-α↓, IL-6↓, IL-8↓ - inhibit Growth/Metastases : TumMeta↓, TumCG↓, EMT↓, MMPs↓, MMP2↓, MMP9↓, uPA↓, VEGF↓, NF-κB↓, CXCR4↓, SDF1↓, TGF-β↓, α-SMA↓, ERK↓ - reactivate genes thereby inhibiting cancer cell growth : HDAC↓, DNMT1↓, DNMT3A↓, EZH2↓, P53↑, HSP↓, Sp proteins↓, - cause Cell cycle arrest : TumCCA↑, cyclin D1↓, CDK2↓, CDK4↓, CDK6↓, - inhibits Migration/Invasion : TumCMig↓, TumCI↓, ERK↓, EMT↓, TOP1↓, TET1↓, - inhibits glycolysis /Warburg Effect and ATP depletion : HIF-1α↓, PKM2↓, cMyc↓, GLUT1↓, LDHA↓, HK2↓, PFKs↓, PDKs↓, HK2↓, ECAR↓, OXPHOS↓, GRP78↑, GlucoseCon↓ - inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, Notch↓, FGF↓, PDGF↓, EGFR↓, Integrins↓, - inhibits Cancer Stem Cells : CSC↓, CK2↓, Hh↓, GLi1↓, CD133↓, CD24↓, β-catenin↓, n-myc↓, sox2↓, OCT4↓, - Others: PI3K↓, AKT↓, JAK↓, STAT↓, Wnt↓, β-catenin↓, AMPK↓, ERK↓, JNK, TrxR**, - Synergies: chemo-sensitization, chemoProtective, RadioSensitizer, RadioProtective, Others(review target notes), Neuroprotective, Cognitive, Renoprotection, Hepatoprotective, CardioProtective, - Selectivity: Cancer Cells vs Normal Cells Curcumin Cancer Mechanism Ranking
TSF legend: P: 0–30 min R: 30 min–3 hr G: >3 hr |
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| Cancer Stem Cells Phytochemicals (natural plant-derived compounds) that may affect CSCs: Curcumin — suppresses self-renewal and pathways (Wnt/Notch/Hedgehog). Resveratrol — shown to reduce CSC populations and sphere formation in multiple models. Sulforaphane (from broccoli sprouts) — reported to inhibit CSC properties and pathways; active in vitro and in vivo. EGCG (epigallocatechin-3-gallate, green tea) — reduces CSC markers and sphere formation in several cancer types. Quercetin — reported to inhibit CSC proliferation, self-renewal and invasiveness (breast, endometrial, others). Berberine — shown to suppress CSC “stemness” and reduce tumorigenic properties in multiple models. Genistein (soy isoflavone) — decreases CSC markers, sphere formation and stemness signaling in prostate/breast/other models. Honokiol (Magnolia bark) — shown to eliminate or suppress CSC-like populations in oral, colon, glioma models. Luteolin — inhibits stemness/EMT and reduces CSC markers and self-renewal in breast, prostate and other models. Withaferin A (from Withania somnifera / ashwagandha) — multiple preclinical reports show WA targets CSCs and reduces tumor growth/metastasis in models. Circadian disruption in cancer and regulation of cancer stem cells by circadian clock genes: An updated review Potential Role of the Circadian Clock in the Regulation of Cancer Stem Cells and Cancer Therapy Can we utilise the circadian clock to target cancer stem cells? |
| 4676- | CUR, | Curcumin suppresses stem-like traits of lung cancer cells via inhibiting the JAK2/STAT3 signaling pathway |
| - | vitro+vivo, | Lung, | H460 |
| 4653- | CUR, | Curcumin: a promising agent targeting cancer stem cells |
| - | Review, | Var, | NA |
| 4651- | CUR, | Targeting cancer stem cells by curcumin and clinical applications |
| - | Review, | Var, | NA |
| 4652- | CUR, | Anticancer effect of curcumin on breast cancer and stem cells |
| - | Review, | BC, | NA |
| 4675- | CUR, | Curcumin improves the efficacy of cisplatin by targeting cancer stem-like cells through p21 and cyclin D1-mediated tumour cell inhibition in non-small cell lung cancer cell lines |
| - | in-vitro, | NSCLC, | A549 |
| 4655- | CUR, | Inhibition of Cancer Stem-like Cells by Curcumin and Other Polyphenol Derivatives in MDA-MB-231 TNBC Cells |
| - | in-vitro, | BC, | NA |
| 4656- | CUR, | EGCG, | Curcumin and epigallocatechin gallate inhibit the cancer stem cell phenotype via down-regulation of STAT3-NFκB signaling |
| - | in-vitro, | BC, | MDA-MB-231 | - | in-vitro, | BC, | MCF-7 |
| 4671- | CUR, | Targeting colorectal cancer stem cells using curcumin and curcumin analogues: insights into the mechanism of the therapeutic efficacy |
| - | in-vitro, | CRC, | NA |
| 4672- | CUR, | An old spice with new tricks: Curcumin targets adenoma and colorectal cancer stem-like cells associated with poor survival outcomes |
| - | vitro+vivo, | CRC, | HCT116 |
| 4674- | CUR, | Curcumin Shows Promise in Targeting Colorectal Cancer Stem-like Cells: Mechanistic Insights and Clinical Implications |
| - | Review, | CRC, | NA |
| 6216- | CUR, | Role of Turmeric and Curcumin in Prevention and Treatment of Chronic Diseases: Lessons Learned from Clinical Trials |
| - | Review, | Var, | NA |
| 5397- | CUR, | SFN, | RES, | EGCG, | Ash | Targeting Cancer Stem Cells with Phytochemicals: Molecular Mechanisms and Therapeutic Potential |
| - | Review, | Var, | NA |
| 2688- | CUR, | Effects of resveratrol, curcumin, berberine and other nutraceuticals on aging, cancer development, cancer stem cells and microRNAs |
| - | Review, | Var, | NA | - | Review, | AD, | NA |
| 437- | CUR, | Anti-cancer activity of amorphous curcumin preparation in patient-derived colorectal cancer organoids |
| - | vitro+vivo, | CRC, | TCO1 | - | vitro+vivo, | CRC, | TCO2 |
| 450- | CUR, | Curcumin may be a potential adjuvant treatment drug for colon cancer by targeting CD44 |
| - | in-vitro, | CRC, | HCT116 | - | in-vitro, | CRC, | HCT8 |
| 10- | CUR, | Curcumin Suppresses Lung Cancer Stem Cells via Inhibiting Wnt/β-catenin and Sonic Hedgehog Pathways |
| - | in-vitro, | Lung, | A549 | - | in-vitro, | Lung, | H1299 |
| 4664- | GEN, | CUR, | RES, | EGCG, | SFN | Targeting cancer stem cells by nutraceuticals for cancer therapy |
| - | Review, | Var, | NA |
| 4667- | RES, | CUR, | SFN, | Physiological modulation of cancer stem cells by natural compounds: Insights from preclinical models |
| - | Review, | Var, | NA |
| 4904- | Sal, | CUR, | Co-delivery of Salinomycin and Curcumin for Cancer Stem Cell Treatment by Inhibition of Cell Proliferation, Cell Cycle Arrest, and Epithelial–Mesenchymal Transition |
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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