Emodin / Chk2 Cancer Research Results

EMD, Emodin: Click to Expand ⟱
Features:
Organic compound isolated from rhubarb, buckthorn, knotweed. It has laxative, anticancer, antibacterial, antiinflammatory, and antiviral activities, and is used in traditional Chinese medicine.
Emodin, an anthraquinone derivative found in various plants (e.g., rhubarb, Polygonum cuspidatum).

Pathways:
- Generation of Reactive Oxygen Species (ROS)
- Upregulation Bax downregulation of Bcl‑2, caspase activation and cyt_c release.
- Induce cell cycle arrest at various checkpoints (commonly G0/G1 or G2/M phases.
- Can inhibit NF‑κB activation
– MAPK Pathways
– PI3K/Akt Pathway
- Metalloproteinases (MMPs)

-ic50 cancer cells 10-50uM, normal cells higher(supports a therapeutic window)

Rank Pathway / Target Axis Direction Label Primary Effect Notes / Cancer Relevance Ref
1 Reactive oxygen species (ROS) ↑ ROS Driver Upstream cytotoxic trigger Emodin induces ROS in cancer cells; ROS increase is positioned upstream of mitochondrial dysfunction and death signaling. (ref)
2 Mitochondrial integrity (ΔΨm) ↓ ΔΨm Driver Mitochondrial dysfunction Emodin decreases mitochondrial membrane potential (ΔΨm), consistent with mitochondria-dependent killing. (ref)
3 Intrinsic apoptosis (caspase cascade) ↑ apoptosis (↑ caspases / ↑ PARP cleavage) Driver Execution-phase cell death Emodin activates caspase-dependent apoptosis with mitochondrial involvement in colon cancer models. (ref)
4 AMPK → AKT/mTOR axis ↑ AMPK / ↓ AKT-mTOR signaling Secondary Growth/metabolic suppression NSCLC study reports AMPK activation with inhibition of AKT/mTOR alongside apoptosis and ROS increase (consistent directionality). (ref)
5 NF-κB signaling ↓ NF-κB activation (↓ p65 nuclear translocation; ↓ IκBα phosphorylation/degradation) Secondary Reduced pro-survival/inflammatory transcription Emodin inhibits TNF-α–induced NF-κB activation by blocking IκBα phosphorylation/degradation and p65 nuclear activity. (ref)
6 STAT3 signaling ↓ STAT3 activation (↓ phosphorylation) Secondary Reduced survival/proliferation signaling HCC study shows emodin suppresses STAT3 activation (and discusses upstream kinase modulation), supporting directionality as STAT3↓. (ref)
7 HIF-1α hypoxia program ↓ HIF-1α (↓ biosynthesis; not via transcription/stability) Adaptive Reduced hypoxia tolerance Pancreatic cancer study: emodin decreases HIF-1α by decreasing biosynthesis (explicit mechanism stated). (ref)
8 Aerobic glycolysis (Warburg output) ↓ glycolysis (↓ ECAR / ↓ glycolytic dependence) Phenotypic Metabolic suppression Renal cancer paper reports emodin inhibits aerobic glycolysis (and links killing to a non-apoptotic death mode in that model). (ref)
9 HDAC inhibition (epigenetic enzyme activity) ↓ HDAC activity Secondary Epigenetic modulation Direct biochemical evidence: emodin inhibits HDAC activity in vitro (fast-on/slow-off kinetics reported). (ref)
10 NRF2 / HO-1 antioxidant response ↑ NRF2 / ↑ HO-1 (context-dependent stress response) Adaptive Counter-response to redox stress HCC model reports emodin increases NRF2 and HO-1 expression; interpret as adaptive/compensatory (not necessarily the cytotoxic driver). (ref)


Chk2, Checkpoint Kinase 2: Click to Expand ⟱
Source:
Type: protein
Chk2: a protein that plays a crucial role in the regulation of the cell cycle and the response to DNA damage. It is a tumor suppressor gene that helps to prevent cancer by ensuring that cells with damaged DNA do not divide and proliferate.
Chk2 is activated in response to DNA damage, such as that caused by ionizing radiation or certain chemicals. Once activated, Chk2 phosphorylates and activates other proteins that help to repair DNA damage or induce cell death (apoptosis) if the damage is too severe.
Decreased expression or loss of function of CHK2 is often associated with more aggressive tumor behavior, increased invasiveness, and poorer prognosis across various cancer types. CHK2 plays a crucial role in maintaining genomic stability, and its dysfunction can lead to increased susceptibility to DNA damage and tumorigenesis.
Scientific Papers found: Click to Expand⟱
1328- EMD,    Emodin induces apoptosis of human tongue squamous cancer SCC-4 cells through reactive oxygen species and mitochondria-dependent pathways
- in-vitro, Tong, SCC4
TumCCA↑, P21↑, Chk2↑, CycB/CCNB1↓, cDC2↓, Apoptosis↑, Cyt‑c↑, Casp9↑, Casp3↑, ROS↑, MMP↓, Bax:Bcl2↑, ER Stress↑,

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 ⓘ

MMP↓, 1,  

Cell Death ⓘ

Apoptosis↑, 1,   Bax:Bcl2↑, 1,   Casp3↑, 1,   Casp9↑, 1,   Chk2↑, 1,   Cyt‑c↑, 1,  

Protein Folding & ER Stress ⓘ

ER Stress↑, 1,  

Cell Cycle & Senescence ⓘ

CycB/CCNB1↓, 1,   P21↑, 1,   TumCCA↑, 1,  

Proliferation, Differentiation & Cell State ⓘ

cDC2↓, 1,  
Total Targets: 13

Pathway results for Effect on Normal Cells:


Total Targets: 0

Scientific Paper Hit Count for: Chk2, Checkpoint Kinase 2
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#:75  Target#:754  State#:%  Dir#:%
  wNotes=0  sortOrder:rid,rpid

 

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