condition found tbRes List
GamB, Gambogic Acid: Click to Expand ⟱
Features:
Gambogic acid is a naturally occurring xanthonoid extracted from the resin of trees belonging to the Garcinia genus—most notably, Garcinia hanburyi. This tree is native to regions in Southeast Asia, particularly found in areas of China, India, and neighboring countries.
Gambogic acid (GA; C38H44O8, MW: 628.76), a polyprenylated xanthone and a widely used coloring agent, is the main active ingredient of gamboges secreted from the Garcinia hanburyi tree ([3, 4], which mainly grows in Southeast Asia.
GA has been approved by the Chinese FDA for the treatment of solid cancers in Phase II clinical trials.

Pathways:
-evidence suggesting that it can inhibit thioredoxin reductase (TrxR).
-can indeed lead to an increase in reactive oxygen species (ROS) levels
-Gambogic acid can trigger mitochondrial dysfunction, leading to cytochrome c release
-influences death receptors
-Inhibition of NF-κB Signaling
-Inhibition of VEGF Pathway
-Cell Cycle Arrest:
-p53 Activation
TrxR, Thioredoxin Reductase: Click to Expand ⟱
Source:
Type:
TrxR is an enzyme that reduces Trx, allowing it to perform its reducing functions. It has been shown to have a role in cancer cell metabolism and survival.
TrxR is overexpressed in various types of cancer, including breast, lung, colon, and prostate cancer.

- Part of the thioredoxin system, which regulates reactive oxygen species (ROS).
- TrxR is a major antioxidant systems that maintains the intracellular redox homeostasis.
- Inhibition causes an increase in ROS.
- TrxR is often upregulated in cancer cells to help manage increased oxidative stress, it is seen as a potential therapeutic target. Inhibiting TrxR may result in increased ROS in cancer cells, pushing them toward apoptosis.
- TrxR is a selenoprotein—meaning it incorporates the trace element selenium in the form of the amino acid selenocysteine.

TrxR inhibitors:
-Piperlongumine
-Withania somnifera (Ashwagandha)
-Parthenolide
-EGCG
-Curcumin
-Myricetin
-Gambogic Acid
Scientific Papers found: Click to Expand⟱
1954- GamB,    Gambogic acid induces apoptosis in hepatocellular carcinoma SMMC-7721 cells by targeting cytosolic thioredoxin reductase
- in-vitro, HCC, SMMC-7721 cell
AntiTum↑, Gambogic acid (GA), a natural product that has been used in traditional Chinese medicine for centuries, demonstrates potent anticancer activity in numerous types of human cancer cells and has entered phase II clinical trials
TrxR↓, GA may interact with TrxR1 to elicit oxidative stress
TrxR1↓,
ROS↑,
Apoptosis↑, eventually induce apoptosis in human hepatocellular carcinoma SMMC-7721 cells.
Dose∅, GA effectively inhibited TrxR1 with an IC 50 around 1.2 uM,
Dose?, Under our experimental conditions, GA with concentration less than 5 uM gives only marginal inhibition of Trx

1955- GamB,    Gambogic acid inhibits thioredoxin activity and induces ROS-mediated cell death in castration-resistant prostate cancer
- in-vitro, Pca, NA
ROS↑, GA disrupted cellular redox homeostasis, observed as elevated reactive oxygen species (ROS), leading to apoptotic and ferroptotic death.
Apoptosis↑,
Ferroptosis↑,
Trx↓, GA inhibited thioredoxin
eff↑, Auranofin (AUR), a thioredoxin reductase (TrxR) inhibitor was the one compound that demonstrated additive growth inhibition together with GA when both were combined at sub-thresh hold concentrations
TrxR↓, GA may inhibit the thioredoxin (Trx) system, which mainly composes NADPH, TrxR, and Trx.
Dose∅, GA demonstrated sub-micromolar activity (IC50 = 185nM) which was 50 times more potent than the next most active compounds, curcumin and tanshinone (CT)
MMP↓, GA treatment showed increasing loss of membrane polarity at 4 and 6 hours in PCAP-1 cells
eff↑, GA enhanced the cell killing observed for either docetaxel (DOX) or enzalutamide (ENZA)


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

Results for Effect on Cancer/Diseased Cells:
AntiTum↑,1,   Apoptosis↑,2,   Dose?,1,   Dose∅,2,   eff↑,2,   Ferroptosis↑,1,   MMP↓,1,   ROS↑,2,   Trx↓,1,   TrxR↓,2,   TrxR1↓,1,  
Total Targets: 11

Results for Effect on Normal Cells:

Total Targets: 0

Scientific Paper Hit Count for: TrxR, Thioredoxin Reductase
Filter Conditions: Pro/AntiFlg:%  IllCat:%  CanType:%  Cells:%  prod#:302  Target#:825  State#:%  Dir#:%
  wNotes=on  sortOrder:rid,rpid

 

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