condition found tbRes List
Part, Parthenolide: Click to Expand ⟱
Features:
Parthenolide is a naturally occurring sesquiterpene lactone derived from the medicinal plant feverfew (Tanacetum parthenium).
-Micheliolide (MCL) is converted readily from parthenolide (PTL), and has better stability and solubility than PTL
-Parthenolide is a natural compound used to treat migraines and arthritis and found to act as a potent NF-κB signaling inhibitor.

Main activities include:
-Inhibition of NF-κB Signaling:
-Induction of Oxidative Stress (ROS): oxidative stress can overwhelm the antioxidant defenses of the cancer cells, leading to cellular damage and death
-Parthenolide can interfere with STAT3 signaling, inhibiting the transcription of genes that favor tumor growth and resistance to apoptosis.
-Modulation of the MAPK/ERK Pathway:
-Impact on the JNK Pathway:
-Parthenolide has been shown to target cancer stem cells
Trx, Thioredoxin: Click to Expand ⟱
Source:
Type: protein
Trx is a small protein that acts as a reducing agent, donating electrons to reduce oxidized proteins and other molecules.
Trx is overexpressed in various types of cancer, including breast, lung, colon, and prostate cancer.

- Cytosolic thioredoxin (TRX-1) and mitochondrial thioredoxin (TRX-2).

- Thioredoxin is a pivotal redox regulator that protects cells from oxidative stress and supports survival and proliferation.

- There is interest in combining thioredoxin inhibitors with conventional chemotherapy or radiotherapy to sensitize tumors to oxidative stress and improve treatment efficacy.
Scientific Papers found: Click to Expand⟱
1985- Part,    KEAP1 Is a Redox Sensitive Target That Arbitrates the Opposing Radiosensitive Effects of Parthenolide in Normal and Cancer Cells
- in-vitro, Pca, LNCaP - in-vitro, Pca, DU145 - in-vitro, Nor, PrEC - in-vivo, NA, NA
ROS↑, parthenolide enhances ROS production in prostate cancer cells through activation of NADPH oxidase
NADPH↑,
RadioS↑, In vivo, parthenolide increases radiosensitivity of mouse xenograft tumors but protects normal prostate and bladder tissues against radiation-induced injury
radioP↑, DMAPT, the water soluble prodrug of parthenolide, is a promising agent for selectively enhancing the sensitivity of prostate cancer cells to radiation while protecting normal tissues from damage caused by radiation.
Trx↓, causes oxidation of thioredoxin (TrX) in prostate cancer cells
*ox-Keap1↑, three normal cell lines, parthenolide increased the oxidized form of Keap1 but decreased the reduced form of Keap1
ox-Keap1↓, results from the three cancer cell lines appeared to be completely opposite to results observed in normal cells treated with parthenolide
rd-Keap1↑, in vivo results show that parthenolide decreased the oxidized form of Keap1 but increased the reduced form of Keap1 in the tumors
*NRF2↑, Oxidization of Keap1 leads to activation of the Nrf2 pro-survival pathway in normal cells. Nrf2 pathway is a major mechanism by which parthenolide protects normal cells against radiation injury
NRF2∅, but no changes were observed in the three cancer cell lines.
NF-kB↓, It has been reported that parthenolide is a potent inhibitor of NF-κB

1986- Part,    Modulation of Cell Surface Protein Free Thiols: A Potential Novel Mechanism of Action of the Sesquiterpene Lactone Parthenolide
- in-vitro, NA, NA
JNK↑, parthenolide mediated activation of JNK
ROS↑, parthenolide induced generation of intracellular reactive oxygen species
eff↓, Parthenolide Cytotoxicity Is Blocked by Thiol Antioxidants
NF-kB↓, parthenolide has been shown to induce malignant cell death by inhibiting NFκB activation and/or activating JNK
Trx↓, thioredoxin pull-down

1987- Part,  Rad,    A NADPH oxidase dependent redox signaling pathway mediates the selective radiosensitization effect of parthenolide in prostate cancer cells
- in-vitro, Pca, PC3 - in-vitro, Nor, PrEC
selectivity↑, parthenolide (PN), a sesquiterpene lactone, selectively exhibits a radiosensitization effect on prostate cancer PC3 cells but not on normal prostate epithelial PrEC cells.
RadioS↑,
ROS↑, oxidative stress in PC3 cells but not in PrEC cells
*ROS∅, oxidative stress in PC3 cells but not in PrEC cells
NADPH↑, In PC3 but not PrEC cells, PN activates NADPH oxidase leading to a decrease in the level of reduced thioredoxin, activation of PI3K/Akt and consequent FOXO3a phosphorylation, which results in the downregulation of FOXO3a targets, MnSOD, CAT
Trx↓,
PI3K↑,
Akt↑,
p‑FOXO3↓, downregulation of FOXO3a targets, antioxidant enzyme manganese superoxide dismutase (MnSOD) and catalase
SOD2↓, MnSOD
Catalase↓,
radioP↑, when combined with radiation, PN further increases ROS levels in PC3 cells, while it decreases radiation-induced oxidative stress in PrEC cells
*NADPH∅, Parthenolide activates NADPH oxidase in PC3 cells but not in PrEC cells
*GSH↑, increases glutathione (GSH) in PrEC cells(normal cells)
*GSH/GSSG↑, GSH/GSSG ratio is not significantly changed by parthenolide in PC3 cells but is increased 2.4 fold in PrEC cells (normal cells)
*NRF2↑, The induction of GSH may be due to the activation of the Nrf2/ARE (antioxidant/electrophile response element) pathway


* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 3

Results for Effect on Cancer/Diseased Cells:
Akt↑,1,   Catalase↓,1,   eff↓,1,   p‑FOXO3↓,1,   JNK↑,1,   ox-Keap1↓,1,   rd-Keap1↑,1,   NADPH↑,2,   NF-kB↓,2,   NRF2∅,1,   PI3K↑,1,   radioP↑,2,   RadioS↑,2,   ROS↑,3,   selectivity↑,1,   SOD2↓,1,   Trx↓,3,  
Total Targets: 17

Results for Effect on Normal Cells:
GSH↑,1,   GSH/GSSG↑,1,   ox-Keap1↑,1,   NADPH∅,1,   NRF2↑,2,   ROS∅,1,  
Total Targets: 6

Scientific Paper Hit Count for: Trx, Thioredoxin
3 Parthenolide
1 Radiotherapy/Radiation
Filter Conditions: Pro/AntiFlg:%  IllCat:%  CanType:%  Cells:%  prod#:8  Target#:824  State#:%  Dir#:%
  wNotes=on  sortOrder:rid,rpid

 

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