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| Licochalcone A - Licorice-Derived Chalcone Type: Natural chalcone / flavonoid-related phytochemical Sources: Found primarily in licorice species including Glycyrrhiza inflata and related Glycyrrhiza plants. Function: Licochalcone A is a bioactive chalcone with anticancer, anti-inflammatory, antioxidant, antimicrobial, and metabolic effects. Reported mechanisms include modulation of PI3K/AKT, MAPK, NF-κB, STAT3, ROS, apoptosis, autophagy, and cell-cycle regulatory pathways. Cancer: Preclinical studies demonstrate inhibition of cancer-cell proliferation, migration, invasion, and metastasis, together with induction of apoptosis, autophagy, oxidative stress, and cell-cycle arrest. LCA has shown anticancer activity in breast, lung, gastric, colorectal, prostate, liver, ovarian, and other experimental cancer models. Alzheimer's Disease: Preclinical evidence suggests neuroprotective and anti-inflammatory effects relevant to neurodegeneration, including suppression of oxidative stress and inflammatory signaling, although the Alzheimer's-specific evidence is less developed than the cancer literature. Licochalcone A — a naturally occurring prenylated chalcone and phenolic phytochemical found principally in licorice species, especially Glycyrrhiza inflata. It is classified as a natural chalcone/flavonoid-related small molecule and is commonly abbreviated LCA, LicA, or Lico A. Its experimental pharmacology is strongly context-dependent: in many cancer models LCA promotes oxidative stress, mitochondrial dysfunction, apoptosis, autophagy, cell-cycle arrest, and suppression of proliferative and inflammatory signaling, whereas in non-malignant injury models it can activate NRF2-dependent antioxidant defenses. Anticancer development remains preclinical. Primary mechanisms (ranked):
Bioavailability / PK relevance: Free oral LCA has poor systemic exposure; a rat pharmacokinetic study reported absolute oral bioavailability of approximately 3.3%. Poor aqueous solubility, limited permeability, intestinal first-pass metabolism, glucuronidation, and other metabolic pathways constrain exposure. Formulation materially changes PK: a self-microemulsifying drug-delivery system increased oral bioavailability approximately 2.36-fold in rats, while nanoparticle approaches have produced still larger increases experimentally. LCA also inhibits P-glycoprotein and several CYP enzymes, particularly CYP3A and CYP2C9 in experimental systems, creating a potential drug-interaction concern. In-vitro vs systemic exposure relevance: Many anticancer experiments use approximately 10–100 μM LCA, with several reported IC50 values in the tens of micromolar range. These concentrations are difficult to reconcile with the low systemic exposure of unformulated oral LCA, so direct translation of conventional cell-culture concentrations to achievable human systemic exposure is uncertain. Delivery systems, local exposure, metabolites, and combination strategies may alter this limitation. Clinical evidence status: Cancer: preclinical only, with cell-culture and animal xenograft evidence but no established anticancer efficacy in humans. Human exposure evidence is substantially stronger for topical dermatologic/cosmetic use: randomized or prospective studies have evaluated LCA-containing formulations for acne, dermatitis, erythema, and rosacea. LCA is not an established systemic oncology drug. Current translational priorities are exposure optimization, human PK, dose-limiting safety characterization, and controlled oncology trials. Licochalcone A Cancer Mechanisms
P: 0–30 min R: 30 min–3 hr G: >3 hr Alzheimer's disease relevance: Licochalcone A now has meaningful disease-specific preclinical evidence rather than only general neuroprotective plausibility. Studies in transgenic AD mouse models report improved cognition together with reduced Aβ burden, reduced neuroinflammation, improved insulin/glucose signaling, inhibition of ER-stress-mediated neuronal apoptosis, and NRF2-associated protection. A 2026 APP/PS1 study reported improved memory, increased synaptic markers, reduced Aβ42 and plaque burden, improved glucose handling, and reduced glial activation after 15 mg/kg/day intraperitoneal LCA for four weeks. A separate transgenic mouse study found inhibition of PERK/eIF2α/ATF4/CHOP ER-stress signaling and neuronal apoptosis. Evidence remains preclinical; there is no established human AD efficacy. Primary AD mechanisms (ranked):
Clinical evidence status: Preclinical. Evidence includes cell studies and multiple transgenic mouse AD models, including disease-specific studies published in 2025 and 2026. Human efficacy, optimal systemic dose, CNS pharmacokinetics, and long-term safety have not been established. Licochalcone A Alzheimer Mechanisms
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| Reactive oxygen species (ROS) are highly reactive molecules that contain oxygen and can lead to oxidative stress in cells. They play a dual role in cancer biology, acting as both promoters and suppressors of cancer. ROS can cause oxidative damage to DNA, leading to mutations that may contribute to cancer initiation and progression. So normally you want to inhibit ROS to prevent cell mutations. However excessive ROS can induce apoptosis (programmed cell death) in cancer cells, potentially limiting tumor growth. Chemotherapy typically raises ROS. -mitochondria is the main source of reactive oxygen species (ROS) (and the ETC is heavily related) ROS Homeostasis in Cancer Cells and Its Potential as a Therapeutic Target "Reactive oxygen species (ROS) are two electron reduction products of oxygen, including superoxide anion, hydrogen peroxide, hydroxyl radical, lipid peroxides, protein peroxides and peroxides formed in nucleic acids 1. They are maintained in a dynamic balance by a series of reduction-oxidation (redox) reactions in biological systems and act as signaling molecules to drive cellular regulatory pathways." "During different stages of cancer formation, abnormal ROS levels play paradoxical roles in cell growth and death 8. A physiological concentration of ROS that maintained in equilibrium is necessary for normal cell survival. Ectopic ROS accumulation promotes cell proliferation and consequently induces malignant transformation of normal cells by initiating pathological conversion of physiological signaling networks. Excessive ROS levels lead to cell death by damaging cellular components, including proteins, lipid bilayers, and chromosomes. Therefore, both scavenging abnormally elevated ROS to prevent early neoplasia and facilitating ROS production to specifically kill cancer cells are promising anticancer therapeutic strategies, in spite of their contradictoriness and complexity." "ROS are the collection of derivatives of molecular oxygen that occur in biology, which can be categorized into two types, free radicals and non-radical species. The non-radical species are hydrogen peroxide (H 2O 2 ), organic hydroperoxides (ROOH), singlet molecular oxygen ( 1 O 2 ), electronically excited carbonyl, ozone (O3 ), hypochlorous acid (HOCl, and hypobromous acid HOBr). Free radical species are super-oxide anion radical (O 2•−), hydroxyl radical (•OH), peroxyl radical (ROO•) and alkoxyl radical (RO•) [130]. Any imbalance of ROS can lead to adverse effects. H2 O 2 and O 2 •− are the main redox signalling agents. The cellular concentration of H2 O 2 is about 10−8 M, which is almost a thousand times more than that of O2 •−". "Radicals are molecules with an odd number of electrons in the outer shell [393,394]. A pair of radicals can be formed by breaking a chemical bond or electron transfer between two molecules." Recent investigations have documented that polyphenols with good antioxidant activity may exhibit pro-oxidant activity in the presence of copper ions, which can induce apoptosis in various cancer cell lines but not in normal cells. "We have shown that such cell growth inhibition by polyphenols in cancer cells is reversed by copper-specific sequestering agent neocuproine to a significant extent whereas iron and zinc chelators are relatively ineffective, thus confirming the role of endogenous copper in the cytotoxic action of polyphenols against cancer cells. Therefore, this mechanism of mobilization of endogenous copper." > Ions could be one of the important mechanisms for the cytotoxic action of plant polyphenols against cancer cells and is possibly a common mechanism for all plant polyphenols. In fact, similar results obtained with four different polyphenolic compounds in this study, namely apigenin, luteolin, EGCG, and resveratrol, strengthen this idea. Interestingly, the normal breast epithelial MCF10A cells have earlier been shown to possess no detectable copper as opposed to breast cancer cells [24], which may explain their resistance to polyphenols apigenin- and luteolin-induced growth inhibition as observed here (Fig. 1). We have earlier proposed [25] that this preferential cytotoxicity of plant polyphenols toward cancer cells is explained by the observation made several years earlier, which showed that copper levels in cancer cells are significantly elevated in various malignancies. Thus, because of higher intracellular copper levels in cancer cells, it may be predicted that the cytotoxic concentrations of polyphenols required would be lower in these cells as compared to normal cells." Majority of ROS are produced as a by-product of oxidative phosphorylation, high levels of ROS are detected in almost all cancers. -It is well established that during ER stress, cytosolic calcium released from the ER is taken up by the mitochondrion to stimulate ROS overgeneration and the release of cytochrome c, both of which lead to apoptosis. Note: Products that may raise ROS can be found using this database, by: Filtering on the target of ROS, and selecting the Effect Direction of ↑ Targets to raise ROS (to kill cancer cells): • NADPH oxidases (NOX): NOX enzymes are involved in the production of ROS. -Targeting NOX enzymes can increase ROS levels and induce cancer cell death. -eNOX2 inhibition leads to a high NADH/NAD⁺ ratio which can lead to increased ROS • Mitochondrial complex I: Inhibiting can increase ROS production • P53: Activating p53 can increase ROS levels(by inducing the expression of pro-oxidant genes) • Nrf2 inhibition: regulates the expression of antioxidant genes. Inhibiting Nrf2 can increase ROS levels • Glutathione (GSH): an antioxidant. Depleting GSH can increase ROS levels • Catalase: Catalase converts H2O2 into H2O+O. Inhibiting catalase can increase ROS levels • SOD1: converts superoxide into hydrogen peroxide. Inhibiting SOD1 can increase ROS levels • PI3K/AKT pathway: regulates cell survival and metabolism. Inhibiting can increase ROS levels • HIF-1α inhibition: regulates genes involved in metabolism and angiogenesis. Inhibiting HIF-1α can increase ROS • Glycolysis: Inhibiting glycolysis can increase ROS levels • Fatty acid oxidation: Cancer cells often rely on fatty acid oxidation for energy production. -Inhibiting fatty acid oxidation can increase ROS levels • ER stress: Endoplasmic reticulum (ER) stress can increase ROS levels • Autophagy: process by which cells recycle damaged organelles and proteins. -Inhibiting autophagy can increase ROS levels and induce cancer cell death. • KEAP1/Nrf2 pathway: regulates the expression of antioxidant genes. -Inhibiting KEAP1 or activating Nrf2 can increase ROS levels and induce cancer cell death. • DJ-1: regulates the expression of antioxidant genes. Inhibiting DJ-1 can increase ROS levels • PARK2: regulates the expression of antioxidant genes. Inhibiting PARK2 can increase ROS levels • SIRT1 inhibition:regulates the expression of antioxidant genes. Inhibiting SIRT1 can increase ROS levels • AMPK activation: regulates energy metabolism and can increase ROS levels when activated. • mTOR inhibition: regulates cell growth and metabolism. Inhibiting mTOR can increase ROS levels • HSP90 inhibition: regulates protein folding and can increase ROS levels when inhibited. • Proteasome: degrades damaged proteins. Inhibiting the proteasome can increase ROS levels • Lipid peroxidation: a process by which lipids are oxidized, leading to the production of ROS. -Increasing lipid peroxidation can increase ROS levels • Ferroptosis: form of cell death that is regulated by iron and lipid peroxidation. -Increasing ferroptosis can increase ROS levels • Mitochondrial permeability transition pore (mPTP): regulates mitochondrial permeability. -Opening the mPTP can increase ROS levels • BCL-2 family proteins: regulate apoptosis and can increase ROS levels when inhibited. • Caspase-independent cell death: a form of cell death that is regulated by ROS. -Increasing caspase-independent cell death can increase ROS levels • DNA damage response: regulates the repair of DNA damage. Increasing DNA damage can increase ROS • Epigenetic regulation: process by which gene expression is regulated. -Increasing epigenetic regulation can increase ROS levels -PKM2, but not PKM1, can be inhibited by direct oxidation of cysteine 358 as an adaptive response to increased intracellular reactive oxygen species (ROS) ProOxidant Strategy:(inhibit the Mevalonate Pathway (likely will also inhibit GPx) -HydroxyCitrate (HCA) found as supplement online and typically used in a dose of about 1.5g/day or more -Atorvastatin typically 40-80mg/day, -Dipyridamole typically 200mg 2x/day Combined effect research -Lycopene typically 100mg/day range (note debatable as it mainly lowers NRF2) Dual Role of Reactive Oxygen Species and their Application in Cancer Therapy ROS-Inducing Interventions in Cancer — Canonical + Mechanistic Reference -generated from AI and Cancer database ROS rating: +++ strong | ++ moderate | + weak | ± mixed | 0 none NRF2: ↓ suppressed | ↑ activated | ± mixed | 0 none Conditions: [D] dose [Fe] metal [M] metabolic [O₂] oxygen [L] light [F] formulation [T] tumor-type [C] combination
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| 8242- | LCA, | Nrf2 signaling and autophagy are complementary in protecting lipopolysaccharide/d-galactosamine-induced acute liver injury by licochalcone A |
| - | in-vivo, | LiverDam, | NA |
| 8245- | LCA, | Licochalcone A Upregulates Nrf2 Antioxidant Pathway and Thereby Alleviates Acetaminophen-Induced Hepatotoxicity |
| - | in-vivo, | LiverDam, | NA |
| 8223- | LCA, | Lico A Enhances Nrf2-Mediated Defense Mechanisms against t-BHP-Induced Oxidative Stress and Cell Death via Akt and ERK Activation in RAW 264.7 Cells |
| - | in-vitro, | Nor, | RAW264.7 |
| 8224- | LCA, | 3,3',4,4'-Tetrahydroxy-2-methoxychalcone from Glycyrrhiza uralensis roots inhibits HIF-1α and Nrf2, suppressing hypoxia-induced angiogenesis |
| - | in-vitro, | CRC, | HCT116 |
| 8225- | LCA, | Cisplatin, | Licochalcone A protects against cisplatin-induced acute kidney injury via the modulation of Nrf2/Keap1-mediated ferroptosis and apoptosis |
| - | in-vivo, | Nor, | NA |
| 8230- | LCA, | The Ameliorative Role of Lico A on Aflatoxin B1-Triggered Hepatotoxicity Partially by Activating Nrf2 Signal Pathway |
| - | vitro+vivo, | Nor, | 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
Filter Conditions: Pro/AntiFlg:% IllCat:% CanType:% Cells:% prod#:447 Target#:275 State#:% Dir#:1
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