Cinnamon / ROS Cancer Research Results

Cin, Cinnamon: Click to Expand ⟱
Features:
Cinnamon is a spice from inner bark from several tree species.
Cinnamon refers primarily to bark extracts from Cinnamomum verum (Ceylon cinnamon) and Cinnamomum cassia. Bioactive constituents include cinnamaldehyde, cinnamic acid derivatives, procyanidins, and polyphenols. In cancer models, cinnamon extracts and cinnamaldehyde are most frequently reported to exert anti-proliferative, pro-apoptotic, anti-inflammatory, and anti-angiogenic effects. Mechanistic themes include suppression of NF-κB and PI3K/AKT signaling, modulation of MAPK pathways, induction of mitochondrial apoptosis, and context-dependent ROS elevation in tumor cells. Some studies report inhibition of HIF-1α and glycolytic signaling, though cinnamon is not a direct enzymatic Warburg inhibitor. Effects vary substantially depending on species (Ceylon vs Cassia), preparation (aqueous vs ethanol extract), and dose. Human oncology data remain limited and largely preclinical.

-Cinnamaldehyde (CA), an active compound derived from the natural plant cinnamon. CA is an aromatic aldehyde compound, constituting approximately 65% of cinnamon extract
- See also HCA, a derivative of CA

Biological activity, cinnamaldehyde from Ceylon cinnamon:
Antimicrobial activity: 10-50 μM
Antioxidant activity: 10-100 μM
Anti-inflammatory activity: 20-50 μM
Anticancer activity: 50-100 μM
Cardiovascular health: 20-50 μM

5 g of Ceylon cinnamon might contain roughly between 30 mg and 150 mg of cinnamaldehyde, with an approximate mid-range estimate of about 70 mg.
Assuming a moderate supplemental intake 50–200 mg of cinnamaldehyde, peak plasma levels might be anticipated in the vicinity of 1–10 μM.

Primary mechanisms (ranked):

  1. Suppression of inflammatory and survival signaling, especially NF-κB, AP-1, COX-2, PI3K/AKT, and related anti-apoptotic programs.
  2. Induction of mitochondrial apoptosis and cell-cycle arrest in cancer models.
  3. Anti-metastatic and anti-invasive effects linked to glycolysis/HK2 suppression, migration inhibition, and EMT-related signaling changes.
  4. Anti-angiogenic activity through VEGF/VEGFR2/HIF-1α and downstream MAPK signaling modulation.
  5. Redox modulation, with antioxidant/NRF2 activation in normal-cell stress contexts but ROS elevation and apoptosis in some tumor models.

Bioavailability / PK relevance: Cinnamon is compositionally variable; cinnamaldehyde is lipophilic, rapidly absorbed and metabolized, and systemic exposure after oral intake is likely much lower than many in-vitro anticancer concentrations. Extract formulation, species, dose, food matrix, and first-pass metabolism materially affect exposure.

In-vitro vs systemic exposure relevance: Many anticancer studies use extract concentrations or cinnamaldehyde levels that may exceed achievable free systemic exposure after ordinary oral intake. Local gastrointestinal exposure may be more plausible than systemic tumor exposure.

Clinical evidence status: Preclinical for oncology. Cinnamon has human RCT/meta-analysis literature mainly in metabolic/inflammatory endpoints, but no established clinical anticancer indication. Translational constraints include variable extract chemistry, cassia coumarin hepatotoxicity risk, CYP/herb-drug interaction potential, and uncertain tumor-achievable exposure.

Cinnamon Cancer Mechanism Table

Rank Pathway / Axis Cancer Cells Normal Cells TSF Primary Effect Notes / Interpretation
1 NF-κB AP-1 inflammatory survival signaling NF-κB ↓; AP-1 ↓; COX-2 ↓; Bcl-2 family survival tone ↓ Inflammatory tone ↓ R, G Anti-inflammatory and anti-survival signaling Core mechanism for cinnamon extract and cinnamaldehyde; model-dependent but repeatedly reported.
2 PI3K AKT mTOR growth signaling PI3K/AKT ↓; proliferation ↓; apoptosis ↑ ↔ or stress protection ↑ R, G Growth-signal suppression Most relevant for cinnamaldehyde-rich preparations; linked to colorectal and other cancer models.
3 Mitochondrial apoptosis Bax ↑; Bcl-2 ↓; mitochondrial dysfunction ↑; caspase activation ↑ ↔ at lower exposure; cytotoxicity risk at high exposure G Apoptotic induction Central anticancer mechanism but often requires concentrations above dietary exposure.
4 Glycolysis and HK2 driven invasion HK2 ↓; G6P/F6P production ↓; migration ↓; invasion ↓ ↔ G Anti-metastatic metabolic suppression Mechanistically important for metastatic dissemination models; not a broad direct Warburg enzyme inhibitor claim.
5 VEGF VEGFR2 HIF-1α angiogenesis axis VEGF ↓; HIF-1α ↓; angiogenesis ↓ Endothelial VEGFR2/MAPK signaling ↓ under angiogenic stimulation R, G Anti-angiogenic effect Supported by endothelial, tumor-cell, zebrafish, and mouse xenograft-style evidence.
6 ROS redox stress ROS ↑ and apoptosis ↑ in some tumor models (dose-dependent) ROS ↓ or antioxidant response ↑ at lower exposure P, R Context-dependent redox modulation Not simply antioxidant or pro-oxidant; direction depends on compound, dose, exposure time, and cell stress state.
7 NRF2 antioxidant response NRF2 ↑ may be protective or resistance-relevant (context-dependent) NRF2 ↑; cytoprotective gene expression ↑ R, G Stress-response activation Important safety/normal-cell protection axis; in cancer it may be double-edged if persistent NRF2 supports survival.
8 Cell-cycle regulation G1 or G2/M arrest ↑; cyclin/CDK signaling ↓ ↔ G Cytostasis Secondary to upstream growth and stress signaling changes.
9 MAPK stress signaling JNK/p38 modulation ↑; ERK modulation mixed ↔ or inflammatory MAPK ↓ P, R Signal reprogramming Direction varies by model and stimulus; best treated as contextual rather than primary.
10 Clinical Translation Constraint Systemic exposure uncertain; in-vitro dose gap likely Cassia coumarin hepatotoxicity risk; CYP interaction potential G Translation limitation Ceylon cinnamon is preferred for repeated higher intake because cassia generally has higher coumarin content.

TSF: P = 0–30 min (redox and early signaling effects), R = 30 min–3 hr (acute pathway modulation), G = >3 hr (apoptosis, angiogenesis, phenotype changes).



ROS, Reactive Oxygen Species: Click to Expand ⟱
Source: HalifaxProj (inhibit)
Type:
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)

"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




Item ROS↑ NRF2 Condition Mechanism Class Remarks 



ROS">Piperlongumine
+++ ↓ [D][T] ROS-dominant






ROS">Shikonin
+++↓/±[D][T]ROS-dominant






ROS">Vitamin K3 (menadione)
+++↓[D]ROS-dominant






ROS">Copper (ionic / nano)
+++↓[Fe][F]ROS-dominant






ROS">Sodium Selenite
+++↓[D]ROS-dominant






ROS">Juglone
+++↓[D]ROS-dominant






ROS">Auranofin
+++↓[D]ROS-dominant






ROS">Photodynamic Therapy (PDT)
+++0[L][O₂]ROS-dominant






ROS">Radiotherapy / Radiation
+++0[O₂]ROS-dominant






ROS">Doxorubicin
+++↓[D]ROS-dominant






ROS">Cisplatin
++↓[D][T]ROS-dominant






ROS">Salinomycin
++↓[D][T]ROS-dominant






ROS">Artemisinin / DHA
++↓[Fe][T]ROS-dominant






ROS">Sulfasalazine
++↓[C][T]ROS-dominant






ROS">FMD / fasting
++↓[M][C][O₂]ROS-dominant






ROS">Vitamin C (pharmacologic)
++↓[Fe][D]ROS-dominant






ROS">Silver nanoparticles
++±[F][D]ROS-dominant






ROS">Gambogic acid
++↓[D][T]ROS-dominant






ROS">Parthenolide
++↓[D][T]ROS-dominant






ROS">Plumbagin
++↓[D]ROS-dominant






ROS">Allicin
++↓[D]ROS-dominant






ROS">Ashwagandha (Withaferin A)
++↓[D][T]ROS-dominant






ROS">Berberine
++↓[D][M]ROS-dominant






ROS">PEITC
++↓[D][C]ROS-dominant






ROS">Methionine restriction
+↓[M][C][T]ROS-secondary






ROS">DCA
+±[M][T]ROS-secondary






ROS">Capsaicin
+±[D][T]ROS-secondary






ROS">Galloflavin
+0[D]ROS-secondary






ROS">Piperine
+±[D][F]ROS-secondary






ROS">Propyl gallate
+↓[D]ROS-secondary






ROS">Scoulerine
+?[D][T]ROS-secondary






ROS">Thymoquinone
±±[D][T]Dual redox






ROS">Emodin
±±[D][T]Dual redox






ROS">Alpha-lipoic acid (ALA)
±↑[D][M]NRF2-dominant






ROS">Curcumin
±↑/↓[D][F]NRF2-dominant






ROS">EGCG
±↑/↓[D][O₂]NRF2-dominant






ROS">Quercetin
±↑/↓[D][Fe]NRF2-dominant






ROS">Resveratrol
±↑[D][M]NRF2-dominant






ROS">Sulforaphane
±↑↑[D]NRF2-dominant






ROS">Lycopene
0↑—Antioxidant






ROS">Rosmarinic acid
0↑—Antioxidant






ROS">Citrate
00—Neutral


Scientific Papers found: Click to Expand⟱
6141- Cin,    The role and mechanism of cinnamaldehyde in cancer
- Review, Var, NA
Apoptosis↑, Casp↑, mtDam↑, angioG↓, TumCP↓, *Inflam↓, *antiOx↑, *ROS↓, *DNAdam↓, ROS↑, *Bcl-2↑, *BAX↓, *NF-kB↓, ChemoSen↑, ICAM-1↓, VCAM-1↓, PI3K↓, Akt↓, mTOR↓, BioAv↝,
6140- Cin,  HCAs,    Cinnamaldehyde: Pharmacokinetics, anticancer properties and therapeutic potential (Review)
- Review, Var, NA
Dose↝, TumCP↓, TumCCA↑, Apoptosis↑, TumCMig↓, TumCI↓, angioG↓, *Inflam↓, *antiOx↑, *Bacteria↓, *AntiThr↑, *hepatoP↑, *AntiDiabetic↑, *neuroP↑, AntiCan↑, ChemoSen↑, *BioAv↝, *BioAv↑, eff↑, CDK1↓, CDK2↓, CDK4↓, cJun↓, cFos↓, Apoptosis↑, PI3K↓, Akt↓, E-cadherin↑, MMP2↓, MMP9↓, TOP1↓, BRCA1↓, ROS↑, BAX↑, Bcl-2↓, XIAP↓, MMP↓, STAT3↓, mTOR↓, NF-kB↓, eff↑, toxicity↓, cardioP↑,
3894- Cin,    Interaction of cinnamaldehyde and epicatechin with tau: implications of beneficial effects in modulating Alzheimer's disease pathogenesis
- in-vitro, AD, NA
*tau↓, *ROS↓,
3890- Cin,    The Therapeutic Roles of Cinnamaldehyde against Cardiovascular Diseases
- Review, NA, NA
*cardioP↑, *Inflam↓, *ROS↓, *lipid-P↓, *AntiAg↑, *angioG↑, *GutMicro↑, *ER Stress↓,
3888- Cin,    Cinnamon, a promising prospect towards Alzheimer's disease
- NA, AD, NA
*tau↓, *Aβ↓, *neuroP↑, *ROS↓, *Inflam↓, *cardioP↑, *antiOx↑, *cognitive↑, *BBB↑, *p‑GSK‐3β↑, *AChE↓,

Showing Research Papers: 1 to 5 of 5

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 5

Pathway results for Effect on Cancer / Diseased Cells:


Redox & Oxidative Stress ⓘ

ROS↑, 2,  

Mitochondria & Bioenergetics ⓘ

MMP↓, 1,   mtDam↑, 1,   XIAP↓, 1,  

Cell Death ⓘ

Akt↓, 2,   Apoptosis↑, 3,   BAX↑, 1,   Bcl-2↓, 1,   Casp↑, 1,  

Transcription & Epigenetics ⓘ

cJun↓, 1,  

DNA Damage & Repair ⓘ

BRCA1↓, 1,  

Cell Cycle & Senescence ⓘ

CDK1↓, 1,   CDK2↓, 1,   CDK4↓, 1,   TumCCA↑, 1,  

Proliferation, Differentiation & Cell State ⓘ

cFos↓, 1,   mTOR↓, 2,   PI3K↓, 2,   STAT3↓, 1,   TOP1↓, 1,  

Migration ⓘ

E-cadherin↑, 1,   MMP2↓, 1,   MMP9↓, 1,   TumCI↓, 1,   TumCMig↓, 1,   TumCP↓, 2,   VCAM-1↓, 1,  

Angiogenesis & Vasculature ⓘ

angioG↓, 2,  

Immune & Inflammatory Signaling ⓘ

ICAM-1↓, 1,   NF-kB↓, 1,  

Drug Metabolism & Resistance ⓘ

BioAv↝, 1,   ChemoSen↑, 2,   Dose↝, 1,   eff↑, 2,  

Clinical Biomarkers ⓘ

BRCA1↓, 1,  

Functional Outcomes ⓘ

AntiCan↑, 1,   cardioP↑, 1,   toxicity↓, 1,  
Total Targets: 38

Pathway results for Effect on Normal Cells:


Redox & Oxidative Stress ⓘ

antiOx↑, 3,   lipid-P↓, 1,   ROS↓, 4,  

Cell Death ⓘ

BAX↓, 1,   Bcl-2↑, 1,  

Transcription & Epigenetics ⓘ

AntiThr↑, 1,  

Protein Folding & ER Stress ⓘ

ER Stress↓, 1,  

DNA Damage & Repair ⓘ

DNAdam↓, 1,  

Proliferation, Differentiation & Cell State ⓘ

p‑GSK‐3β↑, 1,  

Migration ⓘ

AntiAg↑, 1,  

Angiogenesis & Vasculature ⓘ

angioG↑, 1,  

Barriers & Transport ⓘ

BBB↑, 1,  

Immune & Inflammatory Signaling ⓘ

Inflam↓, 4,   NF-kB↓, 1,  

Synaptic & Neurotransmission ⓘ

AChE↓, 1,   tau↓, 2,  

Protein Aggregation ⓘ

Aβ↓, 1,  

Drug Metabolism & Resistance ⓘ

BioAv↑, 1,   BioAv↝, 1,  

Clinical Biomarkers ⓘ

GutMicro↑, 1,  

Functional Outcomes ⓘ

AntiDiabetic↑, 1,   cardioP↑, 2,   cognitive↑, 1,   hepatoP↑, 1,   neuroP↑, 2,  

Infection & Microbiome ⓘ

Bacteria↓, 1,  
Total Targets: 26

Scientific Paper Hit Count for: ROS, Reactive Oxygen Species
5 Cinnamon
1 Hydroxycinnamic-acid
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#:62  Target#:275  State#:%  Dir#:%
  wNotes=0  sortOrder:rid,rpid

 

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