Methylene blue / ECAR Cancer Research Results

M-Blu, Methylene blue: Click to Expand ⟱
Features:
Methylene blue (MB), also known as methylthioninium chloride, is a thiazine dye that can be used as a medication, and can be administered orally, subcutaneously or intravenously.
Mainly used to treat methemoglobinemia by chemically reducing the ferric iron in hemoglobin to ferrous iron
Methylene blue is commonly used in medical practice, especially as a dye in microbiological staining
Antidote in cyanide poisoning: an oxidation-reduction indicator: an antiseptic

Pathways:
- may increases the oxygen consumption of normal tissues having aerobic glycolysis, and of tumors
- generate reactive oxygen species (ROS) upon light activation
-effects on mitochondrial metabolism may contribute to modulation of apoptosis and energy metabolism in cancer cells.
-can affect the generation of reactive oxygen species.
-Historically, it was used in patients with urinary tract infection
-MB has also been used as a tracer for cancer diagnosis and as a photosensitizer for cancer treatment
-shifts redox balance and can promote OXPHOS over glycolysis in some models(reverse Warburg effect)
-can cross BBB and reach brain at concentrations 10 times higher than that in the circulation
-causes shift from shift from glycolysis to oxidative phosphorylation.
-reduces glutathione reductase GSR (an enzyme of glutathione metabolism), context- and concentration-dependent

Rank Pathway / Axis Cancer / Tumor Context Normal Tissue Context TSF Primary Effect Notes / Interpretation
1 Mitochondrial redox cycling (electron shuttle) Redox modulation; NADH oxidation ↑ (context) Mitochondrial efficiency ↑ at low doses (reported) P, R Bioenergetic modulation MB can accept electrons from NADH and donate downstream in the ETC; effects are dose-dependent and context-specific.
2 OXPHOS vs glycolysis balance Shift toward oxidative metabolism reported in some tumor models Improved mitochondrial coupling (low dose) R Metabolic reprogramming Sometimes described as “Warburg reversal,” but more accurately a redox/respiratory modulation that varies by system.
3 ROS modulation (biphasic) ROS ↑ at higher doses; apoptosis ↑ (reported) ROS ↓ or stabilized at lower doses P, R Redox destabilization (dose-dependent) Acts antioxidant at low concentrations; can become pro-oxidant as concentration increases.
4 Mitochondrial membrane potential (ΔΨm) ΔΨm collapse at higher doses (reported) Stabilization possible at low doses R Mitochondrial stress High-dose exposure can impair mitochondrial integrity and promote apoptosis.
5 Intrinsic apoptosis signaling Caspases ↑; apoptosis ↑ (reported in vitro) ↔ G Cell death execution Generally downstream of ROS and mitochondrial perturbation.
6 Photodynamic ROS generation (light-activated) ROS ↑↑ when photoactivated Localized ROS if illuminated P Photoactivated cytotoxicity Distinct mechanism: MB acts as a photosensitizer under light exposure.
7 Glutathione system modulation (GSR / redox enzymes) Redox enzyme modulation reported (model-dependent) Redox buffering alteration possible R Redox regulation Some reports show interaction with glutathione metabolism; not a dominant universal pathway.
8 Blood–brain barrier penetration — CNS accumulation (high tissue levels) P, R Pharmacokinetic property MB crosses the BBB and can accumulate in brain tissue at higher concentrations than plasma.
9 Monoamine oxidase (MAO) inhibition — MAO-A inhibition (clinically relevant) R Off-target pharmacology Important interaction risk with SSRIs/SNRIs (serotonin syndrome).
10 Safety constraints (G6PD deficiency; serotonin syndrome) — Hemolysis risk (G6PD); serotonin toxicity risk — Clinical risk management Well-established safety considerations in clinical use.

Time-Scale Flag (TSF): P / R / G

  • P: 0–30 min (rapid redox cycling; photoactivation)
  • R: 30 min–3 hr (mitochondrial and redox signaling shifts)
  • G: >3 hr (apoptosis/autophagy outcomes)
ECAR, Extracellular Acidification Rate: Click to Expand ⟱
Source:
Type:
ECAR (Extracellular Acidification Rate) is a measure of the rate at which cells release acidic byproducts, such as lactic acid, into the extracellular environment. In the context of cancer, ECAR is often used as a proxy for glycolytic activity, as cancer cells often exhibit increased glycolysis, even in the presence of oxygen.

Studies have shown that cancer cells often have a higher ECAR compared to normal cells, indicating that they are producing more acidic byproducts. This is thought to be due to the fact that cancer cells often rely more heavily on glycolysis for energy production, even in the presence of oxygen.
-ECAR reflects the glycolysis activity
Scientific Papers found: Click to Expand⟱
2540- M-Blu,    Alternative mitochondrial electron transfer for the treatment of neurodegenerative diseases and cancers: Methylene blue connects the dots
- Review, Var, NA - Review, AD, NA
*OCR↑, *Glycolysis↓, *GlucoseCon↑, neuroP↑, Warburg↓, mt-OXPHOS↑, TumCCA↑, TumCP↓, ROS⇅, *cognitive↑, *mTOR↓, *mt-antiOx↑, *memory↑, *BBB↑, *eff↝, *ECAR↓, eff↑, lactateProd↓, NADPH↓, OXPHOS↑, AMPK↑, selectivity↑,
2545- M-Blu,    Reversing the Warburg Effect as a Treatment for Glioblastoma
- in-vitro, GBM, U87MG - NA, AD, NA - in-vitro, GBM, A172 - in-vitro, GBM, T98G
Warburg↓, OCR↑, lactateProd↓, TumCP↓, TumCCA↑, AMPK↑, ACC↓, Cyc↓, neuroP↑, Cyt‑c↝, Glycolysis↓, ECAR↓, TumCG↓, other↓,

Showing Research Papers: 1 to 2 of 2

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 2

Pathway results for Effect on Cancer / Diseased Cells:


Redox & Oxidative Stress ⓘ

OXPHOS↑, 1,   mt-OXPHOS↑, 1,   ROS⇅, 1,  

Mitochondria & Bioenergetics ⓘ

OCR↑, 1,  

Core Metabolism/Glycolysis ⓘ

ACC↓, 1,   AMPK↑, 2,   ECAR↓, 1,   Glycolysis↓, 1,   lactateProd↓, 2,   NADPH↓, 1,   Warburg↓, 2,  

Cell Death ⓘ

Cyt‑c↝, 1,  

Transcription & Epigenetics ⓘ

other↓, 1,  

Cell Cycle & Senescence ⓘ

Cyc↓, 1,   TumCCA↑, 2,  

Proliferation, Differentiation & Cell State ⓘ

TumCG↓, 1,  

Migration ⓘ

TumCP↓, 2,  

Drug Metabolism & Resistance ⓘ

eff↑, 1,   selectivity↑, 1,  

Functional Outcomes ⓘ

neuroP↑, 2,  
Total Targets: 20

Pathway results for Effect on Normal Cells:


Redox & Oxidative Stress ⓘ

mt-antiOx↑, 1,  

Mitochondria & Bioenergetics ⓘ

OCR↑, 1,  

Core Metabolism/Glycolysis ⓘ

ECAR↓, 1,   GlucoseCon↑, 1,   Glycolysis↓, 1,  

Proliferation, Differentiation & Cell State ⓘ

mTOR↓, 1,  

Barriers & Transport ⓘ

BBB↑, 1,  

Drug Metabolism & Resistance ⓘ

eff↝, 1,  

Functional Outcomes ⓘ

cognitive↑, 1,   memory↑, 1,  
Total Targets: 10

Scientific Paper Hit Count for: ECAR, Extracellular Acidification Rate
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#:12  Target#:847  State#:%  Dir#:1
  wNotes=0  sortOrder:rid,rpid

 

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