TCA Cancer Research Results

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⟱
2259- MFrot,  MF,    Method and apparatus for oncomagnetic treatment
- in-vitro, GBM, NA
MMP↓, Oncomagnetic patent Fig 2
Bcl-2↓,
BAX↑,
Bak↑,
Cyt‑c↑,
Casp3↑, caspase staining rises progressively until after 30 min most of the cells fluoresce positive for caspase, revealing activation of this enzyme
Casp9↑,
DNAdam↑,
ROS↑, applying the oscillating magnetic field to the tissue increases the production of reactive oxygen species (ROS )
lactateProd↑,
Apoptosis↑,
MPT↑, opening of the mitochondrial membrane permeability transition pore
*selectivity↑, repetitive magnetic stimulation has shown decreased apoptosis in non -cancerous cells .
eff↑, oncomagnetic therapy may be performed in conjunction with other forms of therapy such as with chemotherapy, other forms of radiative therapy, with drugs and prescriptions, etc
MMP↓, OMF which in turn produces rapidly fluctuating or sustained depolarizations of the mitochondrial membrane potential (MMP) in the tissue .
selectivity↑, Because normal cells have a larger amount of mitochondria, have lower demand for ATP, and are not under stress, disruption of electron flow and small amount of ROS formation and MMP depolarization does not trigger apoptosis
TCA?, decrease in Krebs cycle metabolites
H2O2↑, increase in peroxide levels in GBM cells following stimulation by the system 100 using a rotating magnet
eff↑, combine the administration of BHB , or acetoacetate , or free fatty acid, or branched chain amino acid, or cryptochrome agonist , or MGMT inhibitor, or DNA alkylating agent, or DNA methylating agent, and OMF as a more effective treatment of cancer
*antiOx↑, upregulation of antioxidant mechanisms due to the application of OMFs further protects non -cancerous cells from any ROS -mediated apoptosis
H2O2↑, The experiments showed rapid increases in the levels of superoxide and H2O2 in GBM cells
eff↓, To test whether cell death is caused by the OMF - induced increase in ROS , a potent antioxidant Trolox was used to counteract it, while measuring the decrease in GBM cell count due to 4 h exposure to OMF.
GSH/GSSG↓, GSH/GSSG ratio almost exactly half that seen in control cells
*toxicity∅, No Cytotoxic Effect in Normal Cells
OS↑, OMF -Induced Prolongation of Survival in a Mouse Xenograft Model of GBM


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 ⓘ

GSH/GSSG↓, 1,   H2O2↑, 2,   ROS↑, 1,  

Mitochondria & Bioenergetics ⓘ

MMP↓, 2,   MPT↑, 1,  

Core Metabolism/Glycolysis ⓘ

lactateProd↑, 1,   TCA?, 1,  

Cell Death ⓘ

Apoptosis↑, 1,   Bak↑, 1,   BAX↑, 1,   Bcl-2↓, 1,   Casp3↑, 1,   Casp9↑, 1,   Cyt‑c↑, 1,  

DNA Damage & Repair ⓘ

DNAdam↑, 1,  

Drug Metabolism & Resistance ⓘ

eff↓, 1,   eff↑, 2,   selectivity↑, 1,  

Functional Outcomes ⓘ

OS↑, 1,  
Total Targets: 19

Pathway results for Effect on Normal Cells:


Redox & Oxidative Stress ⓘ

antiOx↑, 1,  

Drug Metabolism & Resistance ⓘ

selectivity↑, 1,  

Functional Outcomes ⓘ

toxicity∅, 1,  
Total Targets: 3

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#:%  Target#:818  State#:%  Dir#:0
  wNotes=on  sortOrder:rid,rpid

 

Home Page