Urolithin / HO-1 Cancer Research Results

Uro, Urolithin: Click to Expand ⟱
Features:
Urolithins are gut microbiota–derived dibenzopyran-6-one metabolites formed from ellagitannins → ellagic acid. They are the bioactive, systemically relevant forms responsible for most of the anticancer, mitochondrial, and signaling effects attributed to pomegranate and berry consumption.
Ellagic acid itself is largely confined to the gut lumen; urolithins are what reach circulation and tissues.

Urolithin A (UA), Most studied; mitophagy, anticancer, anti-inflammatory
Humans fall into urolithin metabotypes:
Metabotype	Description	            Approx. Population
A	        Produces UA (best profile)	~40%
B	        Produces UB ± UA	       ~25–30%
0	        Non-producer	                ~30%

ROS Modulation (Context-Dependent)
Cancer cells:
-Mild ROS ↑ or redox stress → apoptosis, growth arrest
Normal cells:
-ROS ↓, improved mitochondrial efficiency

This duality is why urolithins are less chemo-antagonistic than classic antioxidants.

Anticancer Signaling
↓ PI3K/AKT/mTOR
↓ Wnt/β-catenin
↓ NF-κB, STAT3
Cell-cycle arrest (G1/S)

Unlike sulforaphane or NAC, urolithins:
-Do not strongly upregulate NRF2 in cancer cells
-May normalize NRF2 signaling in normal cells
Direct Urolithin A Supplements: Bypass microbiome dependency

Urolithin A–type activity — Cancer vs Normal Cell Effects
Rank Pathway / Axis Cancer Cells Normal Cells Label Primary Interpretation Notes
1 Mitophagy / mitochondrial quality control (PINK1–Parkin axis) ↑ mitophagy → loss of mitochondrial reserve ↑ mitophagy → improved mitochondrial fitness Driver Mitochondrial pruning and quality enforcement Urolithins selectively stress cancer cells by removing dysfunctional mitochondria while rejuvenating normal-cell mitochondrial pools
2 Mitochondrial metabolism / bioenergetics ↓ metabolic flexibility; ↓ ATP resilience ↑ oxidative efficiency Driver Energy stress vs optimization Cancer cells are less able to compensate for enforced mitochondrial turnover
3 Reactive oxygen species (ROS) ↑ ROS (secondary to mitochondrial stress) ↓ ROS Secondary Metabolism-linked redox shift ROS changes arise from altered mitochondrial populations, not direct redox cycling
4 AMPK / mTOR nutrient-sensing axis ↑ AMPK; ↓ mTOR signaling ↑ AMPK (adaptive) Secondary Catabolic pressure and growth restraint Energy-sensing pathways reinforce growth suppression in metabolically stressed tumor cells
5 Cell cycle regulation ↓ proliferation / ↑ arrest ↔ spared Phenotypic Cytostatic growth limitation Growth inhibition reflects bioenergetic insufficiency rather than direct CDK inhibition
6 Inflammatory signaling (NF-κB / cytokines) ↓ pro-tumor inflammation ↓ inflammatory tone Secondary Anti-inflammatory modulation Reduced inflammation contributes to chemopreventive and microenvironmental effects
7 NRF2 antioxidant response ↑ NRF2 (adaptive, secondary) ↑ NRF2 (protective) Adaptive Redox homeostasis reinforcement NRF2 activation reflects improved mitochondrial quality and reduced oxidative burden rather than a cytotoxic mechanism
8 Apoptosis sensitivity ↑ sensitivity to apoptosis (stress-context dependent) ↓ apoptosis Phenotypic Threshold-dependent cell death Apoptosis occurs when mitochondrial and energetic stress exceed adaptive capacity


HO-1, HMOX1: Click to Expand ⟱
Source:
Type:
(Also known as Hsp32 and HMOX1)
HO-1 is the common abbreviation for the protein (heme oxygenase‑1) produced by the HMOX1 gene.
HO-1 is an enzyme that plays a crucial role in various cellular processes, including the breakdown of heme, a toxic molecule. Research has shown that HO-1 is involved in the development and progression of cancer.
-widely regarded as having antioxidant and cytoprotective effects
-The overall activity of HO‑1 helps to reduce the pro‐oxidant load (by degrading free heme, a pro‑oxidant) and to generate molecules (like bilirubin) that can protect cells from oxidative damage

Studies have found that HO-1 is overexpressed in various types of cancer, including lung, breast, colon, and prostate cancer. The overexpression of HO-1 in cancer cells can contribute to their survival and proliferation by:
  Reducing oxidative stress and inflammation
  Promoting angiogenesis (the formation of new blood vessels)
  Inhibiting apoptosis (programmed cell death)
  Enhancing cell migration and invasion
When HO-1 is at a normal level, it mainly exerts an antioxidant effect, and when it is excessively elevated, it causes an accumulation of iron ions.

A proper cellular level of HMOX1 plays an antioxidative function to protect cells from ROS toxicity. However, its overexpression has pro-oxidant effects to induce ferroptosis of cells, which is dependent on intracellular iron accumulation and increased ROS content upon excessive activation of HMOX1.

-Curcumin   Activates the Nrf2 pathway leading to HO‑1 induction; known for its anti‑inflammatory and antioxidant effects.
-Resveratrol  Induces HO‑1 via activation of SIRT1/Nrf2 signaling; exhibits antioxidant and cardioprotective properties.
-Quercetin   Activates Nrf2 and related antioxidant pathways; contributes to anti‑oxidative and anti‑inflammatory responses.
-EGCG     Promotes HO‑1 expression through activation of the Nrf2/ARE pathway; also exhibits anti‑inflammatory and anticancer properties.
-Sulforaphane One of the most potent natural HO‑1 inducers; triggers Nrf2 nuclear translocation and upregulates a battery of phase II detoxifying enzymes.
-Luteolin    Induces HO‑1 via Nrf2 activation; may also exert anti‑inflammatory and neuroprotective effects in various cell models.
-Apigenin   Has been reported to induce HO‑1 expression partly via the MAPK and Nrf2 pathways; also known for anti‑inflammatory and anticancer activities.
Scientific Papers found: Click to Expand⟱
4869- Uro,    Urolithin A in Central Nervous System Disorders: Therapeutic Applications and Challenges
- Review, AD, NA - Review, Park, NA - Review, Stroke, NA
*MitoP↑, *Inflam↓, *antiOx↑, *Risk↓, *Aβ↓, *p‑tau↓, *p62↓, *PARK2↑, *MMP↑, *ROS↓, *Strength↑, *CRP↓, *IL1β↓, *IL6↓, *TNF-α↓, *AMPK↑, *NF-kB↓, *MAPK↓, *p62↑, *NRF2↑, *SOD↑, *Catalase↑, *HO-1↑, *Ferroptosis↓, *lipid-P↓, *Cartilage↑, *PI3K↓, *Akt↓, *mTOR↓, *Apoptosis↓, *neuroP↑, *Bcl-2↓, *BAX↑, *Casp3↑, *ATP↑, *eff↑, *motorD↑, *NLRP3↓, *radioP↑, *BBB↑,

Showing Research Papers: 1 to 1 of 1

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 1

Pathway results for Effect on Cancer / Diseased Cells:


Total Targets: 0

Pathway results for Effect on Normal Cells:


Redox & Oxidative Stress ⓘ

antiOx↑, 1,   Catalase↑, 1,   Ferroptosis↓, 1,   HO-1↑, 1,   lipid-P↓, 1,   NRF2↑, 1,   PARK2↑, 1,   ROS↓, 1,   SOD↑, 1,  

Mitochondria & Bioenergetics ⓘ

ATP↑, 1,   MMP↑, 1,  

Core Metabolism/Glycolysis ⓘ

AMPK↑, 1,  

Cell Death ⓘ

Akt↓, 1,   Apoptosis↓, 1,   BAX↑, 1,   Bcl-2↓, 1,   Casp3↑, 1,   Ferroptosis↓, 1,   MAPK↓, 1,  

Autophagy & Lysosomes ⓘ

MitoP↑, 1,   p62↓, 1,   p62↑, 1,  

Proliferation, Differentiation & Cell State ⓘ

mTOR↓, 1,   PI3K↓, 1,  

Migration ⓘ

Cartilage↑, 1,  

Barriers & Transport ⓘ

BBB↑, 1,  

Immune & Inflammatory Signaling ⓘ

CRP↓, 1,   IL1β↓, 1,   IL6↓, 1,   Inflam↓, 1,   NF-kB↓, 1,   TNF-α↓, 1,  

Synaptic & Neurotransmission ⓘ

p‑tau↓, 1,  

Protein Aggregation ⓘ

Aβ↓, 1,   NLRP3↓, 1,  

Drug Metabolism & Resistance ⓘ

eff↑, 1,  

Clinical Biomarkers ⓘ

CRP↓, 1,   IL6↓, 1,  

Functional Outcomes ⓘ

motorD↑, 1,   neuroP↑, 1,   radioP↑, 1,   Risk↓, 1,   Strength↑, 1,  
Total Targets: 43

Scientific Paper Hit Count for: HO-1, HMOX1
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#:383  Target#:597  State#:%  Dir#:2
  wNotes=0  sortOrder:rid,rpid

 

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