Parthenolide / Apoptosis Cancer Research Results

PTL, 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

Rank Pathway / Target Axis Direction Primary Effect Notes / Cancer Relevance Ref
1 NF-κB DNA-binding (p65/RelA Cys38 alkylation) ↓ NF-κB DNA binding Suppresses pro-survival transcription Direct mechanism: parthenolide inhibits NF-κB most likely by alkylating p65 at Cys38, reducing DNA binding (ref)
2 Thioredoxin reductase (TrxR1 / TrxR2) ↓ TrxR activity Redox buffering collapse Parthenolide directly targets TrxR1/TrxR2 (selenocysteine-containing enzymes) and inhibits function (ref)
3 ROS accumulation (superoxide / oxidative stress) ↑ ROS Upstream cytotoxic trigger Same TrxR-targeting study shows TrxR inhibition shifts redox state and drives ROS accumulation leading to apoptosis (ref)
4 Mitochondrial integrity (ΔΨm) ↓ ΔΨm Mitochondrial dysfunction Parthenolide increases ROS and is reported with a combined ΔΨm reduction accompanying apoptosis across cancer cell lines (ref)
5 Intrinsic apoptosis (caspase-3 activation) ↑ caspase-3 Programmed cell death Parthenolide treatment associated with mitochondrial membrane depolarization and caspase-3 activation in cancer cells (ref)
6 STAT3 signaling (via JAK2 covalent inhibition) ↓ STAT3 phosphorylation/signaling Reduced survival / migration programs Parthenolide covalently modifies JAK2 cysteines, suppressing kinase activity and inhibiting STAT3 signaling (ref)
7 AML stem cell targeting (LSC vulnerability; regimen context) ↓ AML stem cell survival Stem/progenitor depletion Parthenolide-based regimen (parthenolide + 2DG + temsirolimus) demonstrates potent targeting of AML stem cells (ref)
8 In vivo anti-tumor effect (xenograft; parthenolide analog evidence) ↓ tumor growth Demonstrated efficacy (derivative) Note: this is for an orally bioavailable parthenolide analog (DMAPT), not native parthenolide (ref)


Apoptosis, Apoptosis: Click to Expand ⟱
Source:
Type: type of cell death
Situation in which a cell actively pursues a course toward death upon receiving certain stimuli.
Cancer is one of the scenarios where too little apoptosis occurs, resulting in malignant cells that will not die.
Scientific Papers found: Click to Expand⟱
1992- PTL,    Parthenolide induces ROS-dependent cell death in human gastric cancer cell
- in-vitro, BC, MGC803
TumCCA↑, Casp↑, Apoptosis↑, Necroptosis↑, RIP1↓, RIP3↑, MLKL↑, ROS↑, eff↓,
1996- PTL,    Critical roles of intracellular thiols and calcium in parthenolide-induced apoptosis in human colorectal cancer cells
- in-vitro, CRC, COLO205
Apoptosis↑, GSH↓, ROS↑, Ca+2↑, GRP78/BiP↑, ER Stress↑, eff↓, eff↑, Thiols↓,
1991- PTL,    A novel SLC25A1 inhibitor, parthenolide, suppresses the growth and stemness of liver cancer stem cells with metabolic vulnerability
- in-vitro, Liver, HUH7
TumCCA↑, Apoptosis↑, CSCs↓, ROS↑, OXPHOS↓, MMP↓, SLC25A1↓, IDH2↓,
1984- PTL,    Targeting Thioredoxin Reductase by Parthenolide Contributes to Inducing Apoptosis of HeLa Cells
- in-vitro, Cerv, HeLa
AntiCan↑, TrxR1↓, TrxR2↓, ROS↑, Apoptosis↑, eff↓, eff↑,

Showing Research Papers: 1 to 4 of 4

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 4

Pathway results for Effect on Cancer / Diseased Cells:


Redox & Oxidative Stress ⓘ

GSH↓, 1,   OXPHOS↓, 1,   ROS↑, 4,   Thiols↓, 1,   TrxR1↓, 1,   TrxR2↓, 1,  

Mitochondria & Bioenergetics ⓘ

MMP↓, 1,  

Core Metabolism/Glycolysis ⓘ

IDH2↓, 1,   SLC25A1↓, 1,  

Cell Death ⓘ

Apoptosis↑, 4,   Casp↑, 1,   MLKL↑, 1,   Necroptosis↑, 1,   RIP1↓, 1,  

Protein Folding & ER Stress ⓘ

ER Stress↑, 1,   GRP78/BiP↑, 1,  

Cell Cycle & Senescence ⓘ

TumCCA↑, 2,  

Proliferation, Differentiation & Cell State ⓘ

CSCs↓, 1,  

Migration ⓘ

Ca+2↑, 1,   RIP3↑, 1,  

Drug Metabolism & Resistance ⓘ

eff↓, 3,   eff↑, 2,  

Functional Outcomes ⓘ

AntiCan↑, 1,  
Total Targets: 23

Pathway results for Effect on Normal Cells:


Total Targets: 0

Scientific Paper Hit Count for: Apoptosis, Apoptosis
4 Parthenolide
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#:8  Target#:14  State#:%  Dir#:2
  wNotes=0  sortOrder:rid,rpid

 

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