PKM2 Cancer Research Results

PKM2, Pyruvate Kinase, Muscle 2: Click to Expand ⟱
Source:
Type: enzyme
PKM2 (Pyruvate Kinase, Muscle 2) is an enzyme that plays a crucial role in glycolysis, the process by which cells convert glucose into energy. PKM2 is a key regulatory enzyme in the glycolytic pathway, and it is primarily expressed in various tissues, including muscle, brain, and cancer cells.
-C-myc is a common oncogene that enhances aerobic glycolysis in the cancer cells by transcriptionally activating GLUT1, HK2, PKM2 and LDH-A
-PKM2 has been shown to be overexpressed in many types of tumors, including breast, lung, and colon cancer. This overexpression may contribute to the development and progression of cancer by promoting glycolysis and energy production in cancer cells.
-inhibition of PKM2 may cause ATP depletion and inhibiting glycolysis.
-PK exists in four isoforms: PKM1, PKM2, PKR, and PKL
-PKM2 plays a role in the regulation of glucose metabolism in diabetes.
-PKM2 is involved in the regulation of cell proliferation, apoptosis, and autophagy.
– Pyruvate kinase catalyzes the final, rate-limiting step of glycolysis, converting phosphoenolpyruvate (PEP) to pyruvate with the production of ATP.
– The PKM2 isoform is uniquely regulated and can exist in both highly active tetrameric and less active dimeric forms.
– Cancer cells often favor the dimeric form of PKM2 to slow pyruvate production, thereby accumulating upstream glycolytic intermediates that can be diverted into anabolic pathways to support cell growth and proliferation.
– Under low oxygen conditions, cancer cells rely on altered metabolic pathways in which PKM2 is a key player. – The shift to aerobic glycolysis (Warburg effect) orchestrated in part by PKM2 helps tumor cells survive and grow in hypoxic conditions.

– Elevated expression of PKM2 is frequently observed in many cancer types, including lung, breast, colorectal, and pancreatic cancers.
– High levels of PKM2 are often correlated with enhanced tumor aggressiveness, poor differentiation, and advanced clinical stage.

PKM2 in carcinogenesis and oncotherapy

Inhibitors of PKM2:
-Shikonin, Resveratrol, Baicalein, EGCG, Apigenin, Curcumin, Ursolic Acid, Citrate (best known as an allosteric inhibitor of phosphofructokinase-1 (PFK-1), a key rate-limiting enzyme in glycolysis) potential to directly inhibit or modulate PKM2 is less well established

Full List of PKM2 inhibitors from Database
-key connected observations: Glycolysis↓, lactateProd↓, ROS↑ in cancer cell, while some result for opposite effect on normal cells.
Tumor pyruvate kinase M2 modulators

Flavonoids effect on PKM2
Compounds name IC50/AC50uM Effect
Flavonols
1. Fisetin 0.90uM Inhibition
2. Rutin 7.80uM Inhibition
3. Galangin 8.27uM Inhibition
4. Quercetin 9.24uM Inhibition
5. Kaempferol 9.88uM Inhibition
6. Morin hydrate 37.20uM Inhibition
7. Myricetin 0.51uM Activation
8. Quercetin 3-b- D-glucoside 1.34uM Activation
9. Quercetin 3-D -galactoside 27-107uM Ineffective
Flavanons
10. Neoeriocitrin 0.65uM Inhibition
11. Neohesperidin 14.20uM Inhibition
12. Naringin 16.60uM Inhibition
13. Hesperidin 17.30uM Inhibition
14. Hesperitin 29.10uM Inhibition
15. Naringenin 70.80uM Activation
Flavanonols
16. (-)-Catechin gallateuM 0.85 Inhibition
17. (±)-Taxifolin 1.16uM Inhibition
18. (-)-Epicatechin 1.33uM Inhibition
19. (+)-Gallocatechin 4-16uM Ineffective
Phenolic acids
20. Ferulic 11.4uM Inhibition
21. Syringic and 13.8uM Inhibition
22. Caffeic acid 36.3uM Inhibition
23. 3,4-Dihydroxybenzoic acid 78.7uM Inhibition
24. Gallic acid 332.6uM Inhibition
25. Shikimic acid 990uM Inhibition
26. p-Coumaric acid 22.2uM Activation
27. Sinapinic acids 26.2uM Activation
28. Vanillic 607.9uM Activation


Pca, Prostate Cancer: Click to Expand ⟱
Prostate Cancer: Alterations in genes such as ERG, SPOP, MYC, androgen receptor (AR), and CHD1, drive PCa progression.
TP53 is the most commonly mutated gene in human cancer.
HH↑, GLI-1↑, SHH↑ P53↓
The loss of p53 and/or other tumor suppressor genes, reduced capacity for DNA repair, the dysfunction of telomerase activity, and changes in the pathways that govern the growth of cells also mediate the progression of Pca.
It has been well documented that Ca2+ influx and MDR1 upregulation are highly associated with GEM metabolism in human pancreatic carcinoma.
Increased Growth factor IGF-1/IGF-1R axis activation mediated by both PI3K/Akt or RAF/MEK/ERK system and AR expression remains important in the development and progression of prostate cancer.
It has been demonstrated that prostate cancer cells are relatively sensitive to heat stress.
Long non-coding RNA MALAT1 has been reported as an oncogenic target in multiple types of cancers, including PC.
Scientific Papers found: Click to Expand⟱
2304- CUR,    Curcumin decreases Warburg effect in cancer cells by down-regulating pyruvate kinase M2 via mTOR-HIF1α inhibition
- in-vitro, Lung, H1299 - in-vitro, BC, MCF-7 - in-vitro, Cerv, HeLa - in-vitro, Pca, PC3 - in-vitro, Nor, HEK293
Glycolysis↓, GlucoseCon↓, lactateProd↓, PKM2↓, mTOR↓, Hif1a↓, selectivity↑, Dose↝, tumCV↓,
2407- HCAs,    2'-hydroxycinnamaldehyde inhibits cancer cell proliferation and tumor growth by targeting the pyruvate kinase M2
- in-vitro, Pca, DU145 - in-vitro, Pca, LNCaP
p‑PKM2↓, TumCG↓,
2351- lamb,    Anti-Warburg effect via generation of ROS and inhibition of PKM2/β-catenin mediates apoptosis of lambertianic acid in prostate cancer cells
- in-vitro, Pca, DU145 - in-vitro, Pca, PC3
proCasp3↓, proPARP↓, LDHA↓, Glycolysis↓, HK2↓, PKM2↓, lactateProd↓, p‑STAT3↓, cycD1/CCND1↓, cMyc↓, β-catenin/ZEB1↓, p‑GSK‐3β↓, ROS↑, eff↓,
2404- SFN,    Prostate cancer chemoprevention by sulforaphane in a preclinical mouse model is associated with inhibition of fatty acid metabolism
- in-vitro, Pca, LNCaP - in-vitro, Pca, 22Rv1 - in-vivo, NA, NA
ACC1↓, FASN↓, CPT1A↓, β-oxidation↓, SREBP1?, HK2↓, PKM2↓, LDHA↓, Glycolysis↓,
2403- SFN,    Reversal of the Warburg phenomenon in chemoprevention of prostate cancer by sulforaphane
- in-vitro, Pca, LNCaP - in-vitro, Pca, 22Rv1 - in-vitro, Pca, PC3 - in-vivo, NA, NA
ECAR↓, HK2↓, PKM2↓, LDHA↓, Glycolysis↓, Warburg↓,
2406- SFN,    Sulforaphane and Its Protective Role in Prostate Cancer: A Mechanistic Approach
- Review, Pca, NA
HK2↓, PKM2↓, LDHA↓, Glycolysis↓, LAMP2↑, Hif1a↓, DNAdam↓, DNArepair↓, Dose↝,

Showing Research Papers: 1 to 6 of 6

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 6

Pathway results for Effect on Cancer / Diseased Cells:


Redox & Oxidative Stress ⓘ

ROS↑, 1,  

Core Metabolism/Glycolysis ⓘ

ACC1↓, 1,   cMyc↓, 1,   CPT1A↓, 1,   ECAR↓, 1,   FASN↓, 1,   GlucoseCon↓, 1,   Glycolysis↓, 5,   HK2↓, 4,   lactateProd↓, 2,   LDHA↓, 4,   PKM2↓, 5,   p‑PKM2↓, 1,   SREBP1?, 1,   Warburg↓, 1,   β-oxidation↓, 1,  

Cell Death ⓘ

proCasp3↓, 1,  

Transcription & Epigenetics ⓘ

tumCV↓, 1,  

Autophagy & Lysosomes ⓘ

LAMP2↑, 1,  

DNA Damage & Repair ⓘ

DNAdam↓, 1,   DNArepair↓, 1,   proPARP↓, 1,  

Cell Cycle & Senescence ⓘ

cycD1/CCND1↓, 1,  

Proliferation, Differentiation & Cell State ⓘ

p‑GSK‐3β↓, 1,   mTOR↓, 1,   p‑STAT3↓, 1,   TumCG↓, 1,  

Migration ⓘ

β-catenin/ZEB1↓, 1,  

Angiogenesis & Vasculature ⓘ

Hif1a↓, 2,  

Drug Metabolism & Resistance ⓘ

Dose↝, 2,   eff↓, 1,   selectivity↑, 1,  
Total Targets: 32

Pathway results for Effect on Normal Cells:


Total Targets: 0

Scientific Paper Hit Count for: PKM2, Pyruvate Kinase, Muscle 2
3 Sulforaphane (mainly Broccoli)
1 Curcumin
1 Hydroxycinnamic-acid
1 lambertianic acid
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:22  Cells:%  prod#:%  Target#:772  State#:%  Dir#:1
  wNotes=0  sortOrder:rid,rpid

 

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