Galloflavin / TCA Cancer Research Results

Gallo, Galloflavin: Click to Expand ⟱
Features:
Galloflavin is a flavonoid compound found in certain plants, such as the Galphimia gracilis. Studies have demonstrated that galloflavin can inhibit the growth of cancer cells and induce apoptosis (cell death) in various types of cancer, including breast, lung, and colon cancer. Galloflavin's anti-cancer effects are thought to be due to its ability to modulate various cellular signaling pathways, including the PI3K/Akt and NF-κB pathways, which are involved in cell survival and proliferation. Additionally, galloflavin has been shown to have antioxidant and anti-inflammatory properties, which may also contribute to its anti-cancer effects.

Galloflavin has been reported to be a lactate dehydrogenase (LDH) inhibitor. LDH is an enzyme that plays a crucial role in the metabolism of cancer cells, particularly in the process of glycolysis, which is the breakdown of glucose to produce energy.
Galloflavin's LDH inhibitory activity has been demonstrated in various studies, which have shown that it can inhibit LDH activity in cancer cells, leading to a decrease in lactate production and an increase in the production of reactive oxygen species (ROS). The increase in ROS can lead to cell death, making galloflavin a potential therapeutic agent for the treatment of cancer.
Galloflavin is unusually clean mechanistically:
-LDH-A inhibition is the primary molecular target
-Everything else (↓ lactate, NAD⁺ stress, ROS, mitochondrial dependence) is downstream
-Apoptosis and tumor suppression are consequences, not drivers
This makes galloflavin one of the best-defined Warburg-effect inhibitors.

Not use if antitumor effect extends to in vivo?
Rank Pathway / Target Axis Direction Primary Effect Notes / Cancer Relevance Ref
1 Lactate dehydrogenase (LDH-A and LDH-B) ↓ LDH activity Warburg glycolysis inhibition Galloflavin directly inhibits both isoforms of LDH, blocking the conversion of pyruvate to lactate and impairing glycolytic flux in tumor cells. :contentReference[oaicite:1]{index=1} (ref)
2 Glycolysis output / ATP synthesis ↓ lactate production & ATP Reduced cancer cell energy Galloflavin blocks aerobic glycolysis in multiple tumor cell lines, reducing lactate and ATP, and thus limiting energy available for proliferation. :contentReference[oaicite:2]{index=2} (ref)
3 Cell proliferation ↓ proliferation / growth Growth suppression Galloflavin inhibits proliferation across several cancer cell models (breast cancer MCF-7, MDA-MB-231, and tamoxifen-resistant cells), independent of glycolytic phenotype. :contentReference[oaicite:3]{index=3} (ref)
4 Apoptosis induction ↑ apoptosis (caspase activation) Programmed cell death Breast cancer work shows galloflavin induces apoptosis as the main mode of cell death, with signaling differences depending on glycolytic status. :contentReference[oaicite:4]{index=4} (ref)
5 Reactive oxygen species (ROS) ↑ ROS Oxidative stress Endometrial cancer cells treated with galloflavin show increased ROS production, potentially contributing to cytotoxicity and DNA damage. :contentReference[oaicite:5]{index=5} (ref)
6 Mitochondrial apoptosis axis (Bcl-2/MCL-1 changes) ↑ mitochondrial apoptosis Execution-phase cell death In endometrial cancer cells, galloflavin increases markers of mitochondrial apoptosis (e.g., cleaved caspase-3) while lowering anti-apoptotic proteins Bcl-2 and Mcl-1. :contentReference[oaicite:6]{index=6} (ref)
7 Cell cycle regulation ↑ cell-cycle arrest Proliferation blockade GF induces cell-cycle changes in endometrial cancer models (e.g., G2 arrest in some lines), indicating impacts on proliferation checkpoints. :contentReference[oaicite:7]{index=7} (ref)
8 Metastasis-related markers (E-cadherin / Slug) ↑ E-cadherin / ↓ Slug Reduced invasive phenotype Galloflavin treatment increases E-cadherin and decreases Slug in endometrial cancer cells, consistent with reduced migratory/invasive capacity. :contentReference[oaicite:8]{index=8} (ref)
9 LDH-A binding to ssDNA & RNA synthesis ↓ LDH-A-ssDNA binding & ↓ RNA synthesis Transcription/stress axis Galloflavin prevents LDHA binding to single-stranded DNA and inhibits RNA synthesis independently of glycolysis. :contentReference[oaicite:9]{index=9} (ref)
10 Combinatorial metabolic inhibition (in vitro) ↑ metabolic stress when combined Enhanced anti-proliferative effect In vitro work shows galloflavin enhances antiproliferative and apoptotic effects in combination with other metabolic inhibitors (e.g., CPI-613) in pancreatic cancer cells. :contentReference[oaicite:10]{index=10} (ref)


TCA, Krebs/Tricarboxylic Acid Cycle: Click to Expand ⟱
Source:
Type: enzymes
Tricarboxylic Acid (TCA) cycle, also known as the Citric Acid cycle or Krebs cycle, is a key metabolic pathway that plays a central role in cellular energy production.
The TCA cycle is a series of chemical reactions that occur in the mitochondria and involve the breakdown of acetyl-CoA, a molecule produced from the breakdown of carbohydrates, fats, and proteins. The TCA cycle produces:
1. NADH and FADH2
2. ATP
3. GTP
Expression of TCA cycle enzymes is often downregulated in cancer cells.

Since cancer cells often exhibit rewired metabolism, including alterations in the use of the TCA cycle, researchers are exploring potential therapeutic interventions that target metabolic enzymes or pathways.
TCA cycle is essential for normal cellular metabolism, its role in cancer is multifaceted. Cancer cells often reprogram their metabolism—including the TCA cycle—to support rapid growth, adapt to hypoxia, and manage oxidative stress. Mutations in key TCA cycle enzymes generate oncometabolites that further contribute to cancer progression by disrupting normal cellular regulation.

Rather than saying the TCA cycle is globally over- or underexpressed in cancer, it is more accurate to say that cancer cells reprogram the cycle—with selective upregulation of parts important for biosynthesis and survival and mutations or downregulation of other parts—to best support their growth and survival in a challenging microenvironment.

Oncometabolites
-Some metabolites in the Krebs cycle, when accumulated to abnormal levels due to genetic mutations or enzyme deficiencies, are termed “oncometabolites” because they can promote tumorigenesis.
-Mutations in succinate dehydrogenase (SDH) can lead to accumulation of succinate.
-Mutations in fumarate hydratase (FH) result in an accumulation of fumarate.
-Mutations in isocitrate dehydrogenase (IDH1 and IDH2) result in a neomorphic enzyme activity that converts α-ketoglutarate (α-KG) to 2-hydroxyglutarate:
Scientific Papers found: Click to Expand⟱
5205- Gallo,    Evaluation of the anti-tumor effects of lactate dehydrogenase inhibitor galloflavin in endometrial cancer cells
- in-vitro, Endo, ISH
LDH↓, TumCG↓, LDHA↓, Apoptosis↑, cl‑Casp3↑, Mcl-1↓, Bcl-2↓, TumCCA↑, ROS↑, mt-DNAdam↑, GlucoseCon↓, ATP↓, PDH↑, Pyruv↑, Glycolysis↓, TCA↑, cMyc↓, E-cadherin↑, Slug↓,

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:


Redox & Oxidative Stress ⓘ

ROS↑, 1,  

Mitochondria & Bioenergetics ⓘ

ATP↓, 1,  

Core Metabolism/Glycolysis ⓘ

cMyc↓, 1,   GlucoseCon↓, 1,   Glycolysis↓, 1,   LDH↓, 1,   LDHA↓, 1,   PDH↑, 1,   Pyruv↑, 1,   TCA↑, 1,  

Cell Death ⓘ

Apoptosis↑, 1,   Bcl-2↓, 1,   cl‑Casp3↑, 1,   Mcl-1↓, 1,  

DNA Damage & Repair ⓘ

mt-DNAdam↑, 1,  

Cell Cycle & Senescence ⓘ

TumCCA↑, 1,  

Proliferation, Differentiation & Cell State ⓘ

TumCG↓, 1,  

Migration ⓘ

E-cadherin↑, 1,   Slug↓, 1,  

Clinical Biomarkers ⓘ

LDH↓, 1,  
Total Targets: 20

Pathway results for Effect on Normal Cells:


Total Targets: 0

Scientific Paper Hit Count for: TCA, Krebs/Tricarboxylic Acid Cycle
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#:177  Target#:818  State#:%  Dir#:2
  wNotes=0  sortOrder:rid,rpid

 

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