Betulinic acid / AMPK Cancer Research Results

BetA, Betulinic acid: Click to Expand ⟱
Features:
Betulinic acid "buh-TOO-li-nik acid" is a natural compound with antiretroviral, anti malarial, anti-inflammatory and anticancer properties. It is found in the bark of several plants, such as white birch, ber tree and rosemary, and has a complex mode of action against tumor cells.
-Betulinic acid is a naturally occurring pentacyclic triterpenoid
-vitro concentrations range from 1–100 µM, in vivo studies in rodents have generally used doses from 10–100 mg/kg
Precursor: Betulin, via oxidation at C-28
Lipophilicity: High (poor aqueous solubility)

Betulinic acid — Betulinic acid is a naturally occurring lupane-type pentacyclic triterpenoid with broad experimental anticancer activity, especially against melanoma, neuroectodermal, glioma, breast, colorectal, and other solid-tumor models. It is a natural-product small molecule, usually abbreviated BA or BetA, and is found in several plants, classically birch bark, with semi-synthesis commonly starting from betulin. A distinguishing feature is preferential induction of tumor-cell death through direct mitochondrial injury with relative sparing of many non-neoplastic cells in preclinical systems. Its main translational limitation is very poor aqueous solubility with correspondingly weak oral/systemic developability unless formulation or derivatization is used.

Primary mechanisms (ranked):

  1. Direct mitochondrial membrane permeabilization with intrinsic apoptosis activation
  2. Mitochondrial ROS increase with collapse of mitochondrial membrane potential and cytochrome c release
  3. ER-stress and unfolded-protein-response activation, including GRP78-linked stress signaling
  4. Suppression of NF-κB and other pro-survival transcriptional programs, including Sp-family signaling in some models
  5. Cell-cycle arrest with reduced cyclin/CDK signaling
  6. Anti-migratory and anti-invasive effects via EMT, FAK, ROCK1, MMP, and cytoskeletal remodeling pathways
  7. Secondary metabolic suppression of aerobic glycolysis and hypoxia-response signaling in susceptible models
  8. Adjunct sensitization to chemo- or radiotherapy in selected preclinical settings

Bioavailability / PK relevance: Betulinic acid is highly lipophilic and poorly water-soluble, which strongly limits oral absorption and systemic exposure. PK behavior is formulation-dependent, and much of the translational literature focuses on nanoparticles, liposomes, micelles, conjugates, or topical delivery rather than conventional oral dosing.

In-vitro vs systemic exposure relevance: Many in-vitro anticancer studies use low-to-mid micromolar concentrations, which are often difficult to reproduce reliably in vivo with unformulated parent betulinic acid. Accordingly, mechanistic findings are useful biologically, but direct concentration matching to standard oral/systemic use is often poor unless enhanced-delivery systems are used.

Clinical evidence status: Strong preclinical and formulation-development literature; very limited human oncology evidence. Cancer-facing clinical development appears to remain early-phase/topical, with orphan designation for topical metastatic melanoma but no FDA approval for that indication. Betulinic acid itself is not an established approved anticancer drug.

-half-life reports vary 3-5 hrs?. Reported half-life varies by formulation and species; several studies report multi-hour systemic persistence.
BioAv -hydrophobic molecule with relatively poor water solubility. 
Main Cancer action
-Direct mitochondrial targeting in cancer cells
-Minimal effect on normal cells

Key pathways
-Mitochondrial membrane permeabilization
-ROS-mediated apoptosis
-Caspase-independent death

Chemo relevance: Generally compatible, Not a redox buffer

Pathways:
- often induce ROS production
- ROS↑ related: MMP↓(ΔΨm), ER Stress↑, UPR↑, GRP78↑, Ca+2↑, Cyt‑c↑, Caspases↑, DNA damage↑, cl-PARP↑, HSP↓
- Lowers AntiOxidant defense in Cancer Cells(Often associated with reduced redox buffering capacity in tumor cells (e.g., GSH depletion); NRF2 direction model-dependent.): NRF2↓, SOD↓, GSH↓
- May Raise AntiOxidant defense in Normal Cells: NRF2↑, SOD↑, GSH↑, Catalase↑ Reports suggest relative sparing of normal cells and preservation of antioxidant capacity in some models
- lowers Inflammation : NF-kB↓(typ), COX2↓, p38↓ (context-dependent; often stress-activated), Pro-Inflammatory Cytokines : IL-1β↓, TNF-α↓, IL-6↓, IL-8↓
- inhibit Growth/Metastases : , MMPs↓, MMP2↓, MMP9↓, TIMP2, IGF-1↓, VEGF↓, ROCK1↓, FAK↓, NF-κB↓, TGF-β↓, α-SMA↓, ERK↓
- reactivate genes thereby inhibiting cancer cell growth : P53↑, HSP↓(model-dependent), Sp proteins↓,
- cause Cell cycle arrest : TumCCA↑, cyclin D1↓, CDK2↓, CDK4↓,
- inhibits Migration/Invasion : TumCMig↓, TumCI↓, FAK↓, ERK↓, EMT↓, TOP1↓,
- inhibits glycolysis (secondary to mitochondrial stress) ATP depletion : HIF-1α↓, PKM2↓, cMyc↓, GLUT1↓, LDH↓, LDHA↓, HK2↓, PFKs↓, PDKs↓, HK2↓, ECAR↓, GRP78↑(ER stress), GlucoseCon↓
- inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, EGFR↓,
- inhibits Cancer Stem Cells in some studies : CSC↓, GLi1↓, β-catenin↓, OCT4↓,
- Others: PI3K↓(typ), AKT↓(typ), JAK↓, STAT↓, β-catenin↓, AMPK↓(AMPK is often activated during metabolic stress), ERK↓, JNK,
- Synergies: chemo-sensitization, chemoProtective, RadioSensitizer, Others(review target notes), Neuroprotective, Cognitive, Renoprotection, Hepatoprotective, CardioProtective,
- Selectivity: Cancer Cells vs Normal Cells

Mechanistic profile

Rank Pathway / Axis Cancer Cells Normal Cells TSF Primary Effect Notes / Interpretation
1 Mitochondrial permeabilization ↑ MOMP, ↓ ΔΨm, ↑ cytochrome c release, ↑ apoptosis ↔ / milder effect P-R Core tumor-selective death trigger Best-supported central mechanism; helps explain activity in apoptosis-competent but therapy-resistant tumors.
2 Mitochondrial ROS increase ↑ ROS ↔ / possible antioxidant sparing (context-dependent) P-R Amplifies mitochondrial stress and death signaling ROS appears mechanistically relevant in many tumor models, but not every study makes it the dominant initiating event.
3 Caspase axis and caspase-independent death ↑ caspase-9, ↑ caspase-3, ↑ PARP cleavage; caspase-independent death also reported ↔ R-G Executes apoptosis after mitochondrial injury BA can still kill some tumor cells when classical caspase execution is partly blocked, indicating non-canonical death contribution.
4 ER stress / UPR / GRP78 ↑ ER stress, ↑ UPR, ↑ GRP78 stress signaling ↔ R-G Links proteostatic stress to apoptosis and metastasis suppression Especially relevant in breast and gastric cancer models; may also connect to metabolic suppression and chemosensitization.
5 NF-κB survival signaling ↓ NF-κB ↔ / ↓ inflammatory tone R-G Reduces survival, inflammatory, and resistance programs Common downstream convergence node across several tumor types.
6 Cell-cycle machinery ↓ cyclin D1, ↓ CDK2, ↓ CDK4, ↑ cell-cycle arrest ↔ G Slows proliferation Usually supportive rather than primary; often follows stress and survival-pathway disruption.
7 EMT / invasion / matrix remodeling ↓ EMT, ↓ FAK, ↓ ROCK1, ↓ MMP2, ↓ MMP9, ↓ migration, ↓ invasion ↔ G Antimetastatic effect Consistent with reduced motility and invasive phenotype in multiple solid-tumor models.
8 Glycolysis ↓ glucose uptake, ↓ lactate, ↓ ECAR, ↓ HK2, ↓ PKM2, ↓ LDHA ↔ G Secondary metabolic suppression Not the universal initiating mechanism; appears important in selected breast-cancer and GRP78-linked systems.
9 HIF-1α hypoxia axis ↓ HIF-1α, ↓ VEGF, ↓ GLUT1, ↓ PDK1 ↔ G Reduces hypoxic adaptation and angiogenic drive Relevant in hypoxic tumor biology and helps explain antiangiogenic/metabolic effects in some models.
10 NRF2 / antioxidant buffering ↓ NRF2 or ↓ redox buffering (model-dependent) ↔ / possible preservation of antioxidant tone (context-dependent) R-G May widen tumor redox vulnerability Direction is not uniform across all models; safer to treat this as contextual rather than universally core.
11 Ca²⁺ stress ↑ Ca²⁺ (context-dependent) ↔ P-R Supports organelle stress and apoptotic signaling Usually part of the broader mitochondrial/ER stress network rather than a stand-alone primary target.
12 Radiosensitization or Chemosensitization ↑ sensitivity to radiation or selected drugs Unclear G Adjunct leverage Preclinical evidence supports additive or sensitizing effects with irradiation and with some chemotherapy settings, but this is not yet clinically established.
13 Clinical Translation Constraint Poor solubility and limited systemic exposure constrain reproducibility Same formulation constraint G Delivery bottleneck Main barrier is not lack of mechanistic richness but drug-like exposure; translation currently depends heavily on formulation, derivatization, or topical/local use.

Time-Scale Flag (TSF): P / R / G

  • P: 0–30 min (primary/physical-chemical effects; rapid kinase/redox signaling)
  • R: 30 min–3 hr (acute redox and stress-response activation)
  • G: >3 hr (gene-regulatory adaptation and phenotypic outcomes)
AMPK, adenosine monophosphate-activated protein kinase: Click to Expand ⟱
Source:
Type:
AMPK: guardian of metabolism and mitochondrial homeostasis; Upon changes in the ATP-to-AMP ratio, AMPK is activated. (AMPK) is a key metabolic sensor that is pivotal for the maintenance of cellular energy homeostasis. It is well documented that AMPK possesses a suppressor role in the context of tumor development and progression by modulating the inflammatory and metabolic pathways.

-Activating AMPK can inhibit anabolic processes and the PI3K/Akt/mTOR pathway reducing glycolysis shifting toward Oxidative Phosphorlylation.


AMPK activators:
-metformin or AICAR
-Resveratrol: activate AMPK indirectly
-Berberine
-Quercetin: may stimulate AMPK
-EGCG: thought to activate AMPK
-Curcumin: may activate AMPK

-Ginsenosides: Some ginsenosides have been associated with AMPK activation -Beta-Lapachone: A natural naphthoquinone compound found in the bark of Tabebuia avellanedae (also known as lapacho or taheebo). It has been observed to activate AMPK in certain models.
-Alpha-Lipoic Acid (ALA): associated with AMPK activation
Scientific Papers found: Click to Expand⟱
2729- BetA,    Betulinic acid in the treatment of tumour diseases: Application and research progress
- Review, Var, NA
ChemoSen↑, Betulinic acid can increase the sensitivity of cancer cells to other chemotherapy drugs
mt-ROS↑, BA has antitumour activity, and its mechanisms of action mainly include the induction of mitochondrial oxidative stress
STAT3↓, inhibition of signal transducer and activator of transcription 3 and nuclear factor-κB signalling pathways.
NF-kB↓,
selectivity↑, A main advantage of BA and its derivatives is that they are cytotoxic to different human tumour cells, while cytotoxicity is much lower in normal cells.
*toxicity↓, It can kill cancer cells but has no obvious effect on normal cells and is also nontoxic to other organs in xenograft mice at a dose of 500 mg/kg
eff↑, BA combined with chemotherapy drugs, such as platinum and mithramycin A, can induce apoptosis in tumour cells
GRP78/BiP↑, In animal xenograft tumour models, BA enhanced the expression of glucose-regulated protein 78 (GRP78)
MMP2↓, reduced the levels of matrix metalloproteinases (MMPs), such as MMP-2 and MMP-9, in lung metastatic lesions of breast cancer, indicating that BA can reduce the invasiveness of breast cancer in vivo and block epithelial mesenchymal transformation (EMT
P90RSK↓,
TumCI↓,
EMT↓,
MALAT1↓, MALAT1, a lncRNA, was downregulated in hepatocellular carcinoma (HCC) cells treated with BA in vivo,
Glycolysis↓, Suppressing aerobic glycolysis of cancer cells by GRP78/β-Catenin/c-Myc signalling pathways
AMPK↑, activating AMPK signaling pathway
Sp1/3/4↓, inhibiting Sp1. BA at 20 mg/kg/d, the tumour volume and weight were significantly reduced, and the expression levels of Sp1, Sp3, and Sp4 in tumour tissues were lower than those in control mouse tissues
Hif1a↓, Suppressing the hypoxia-induced accumulation of HIF-1α and expression of HIF target genes
angioG↓, PC3: Having anti-angiogenesis effect
NF-kB↑, LNCaP, DU145 — Inducing apoptosis and NF-κB pathway
NF-kB↓, U266 — Inhibiting NF-κB pathway.
MMP↓, BA produces ROS and reduces mitochondrial membrane potential; the mitochondrial permeability transition pore of the mitochondrial membrane plays an important role in apoptosis signal transduction.
Cyt‑c↑, Mitochondria release cytochrome C and increase the levels of Caspase-9 and Caspase-3, inducing cell apoptosis.
Casp9↑,
Casp3↑,
RadioS↑, BA could be a promising drug for increasing radiosensitization in oral squamous cell carcinoma radiotherapy.
PERK↑, BA treatment increased the activation of the protein kinase RNA-like endoplasmic reticulum kinase (PERK)/C/EBP homologous protein (CHOP) apoptosis pathway and decreased the expression of Sp1.
CHOP↑,
*toxicity↓, BA at a concentration of 50 μg/ml did not inhibit the growth of normal peripheral blood lymphocytes, indicating that the toxicity of BA was at least 1000 times less than that of doxorubicin

2739- BetA,    Glycolytic Switch in Response to Betulinic Acid in Non-Cancer Cells
- in-vitro, Nor, HUVECs - in-vitro, Nor, MEF
*Glycolysis↑, BA elevates the rates of cellular glucose uptake and aerobic glycolysis in mouse embryonic fibroblasts with concomitant reduction of glucose oxidation.
*GlucoseCon↑, BA increases cellular glucose uptake
*Apoptosis↓, Without eliciting signs of obvious cell death BA leads to compromised mitochondrial function, increased expression of mitochondrial uncoupling proteins (UCP) 1 and 2, and liver kinase B1 (LKB1)-dependent activation AMP-activated protein kinase.
*UCP1↓,
*AMPK↑, AMPK activation accounts for the increased glucose uptake and glycolysis which in turn are indispensable for cell viability upon BA treatment.
GLUT1↑, The expression of glucose transporter GLUT1 was elevated upon BA treatment for 16 h
mt-ROS↑, We observed increased production of mitochondrial ROS (Fig. 4A) and elevated expression of uncoupling proteins UCP1 and UCP2 in BA-treated MEF

2736- BetA,  Chemo,    Multifunctional Roles of Betulinic Acid in Cancer Chemoprevention: Spotlight on JAK/STAT, VEGF, EGF/EGFR, TRAIL/TRAIL-R, AKT/mTOR and Non-Coding RNAs in the Inhibition of Carcinogenesis and Metastasis
- Review, Var, NA
chemoPv↑, reviews about cancer chemopreventive role of betulinic acid against wide variety of cancers [18,19,20,21].
p‑STAT3↓, betulinic acid reduced the levels of p-STAT3 in tumor tissues derived from KB cells
JAK1↓, Betulinic acid exerted inhibitory effects on the constitutive phosphorylation of JAK1 and JAK2
JAK2↓,
VEGF↓, betulinic acid mediated inhibition of VEGF
EGFR↓, evaluation of betulinic acid as a next-generation EGFR inhibitor
Cyt‑c↑, release of SMAC/DIABLO and cytochrome c from mitochondria in SHEP neuroblastoma cells
Diablo↑,
AMPK↑, Betulinic acid induced activation of AMPK and consequently reduced the activation of mTOR.
mTOR↓,
Sp1/3/4↓, Betulinic acid significantly reduced the quantities of Sp1, Sp3 and Sp4 in the tissues of the tumors derived from RKO cells
DNAdam↑, Betulinic acid efficiently triggered DNA damage (γH2AX) and apoptosis (caspase-3 and p53 phosphorylation) in temozolomide-sensitive and temozolomide-resistant glioblastoma cells.
Gli1↓, Betulinic acid effectively reduced GLI1, GLI2 and PTCH1 in RMS-13 cells.
GLI2↓,
PTCH1↓,
MMP2↓, betulinic acid exerted inhibitory effects on MMP-2 and MMP-9 in HepG2 cells.
MMP9↓,
miR-21↓, Collectively, p53 increased miR-21 levels and inhibited SOD2 levels, leading to significant increase in the accumulation of ROS levels and apoptotic cell death.
SOD2↓,
ROS↑,
Apoptosis↑,

2730- BetA,    Betulinic acid induces autophagy-dependent apoptosis via Bmi-1/ROS/AMPK-mTOR-ULK1 axis in human bladder cancer cells
- in-vitro, Bladder, T24/HTB-9
tumCV↓, The present study showed that BA exposure significantly suppressed viability, proliferation, and migration of EJ and T24 human bladder cancer cells
TumCP↓,
TumCMig↓,
Casp↑, These effects reflected caspase 3-mediated apoptosis
TumAuto↑, BA-induced autophagy was evidenced by epifluorescence imaging of lentivirus-induced expression of mCherry-GFP-LC3B and increased expression of two autophagy-related proteins, LC3B-II and TEM.
LC3B-II↑,
p‑AMPK↑, Moreover, enhanced AMPK phosphorylation and decreased mTOR and ULK-1 phosphorylation suggested BA activates autophagy via the AMPK/mTOR/ULK1 pathway.
mTOR↓,
BMI1↓, decreased Bmi-1 expression in BA-treated T24 cell xenografts in nude mice suggested that downregulation of Bmi-1 is the underlying mechanism in BA-mediated, autophagy-dependent apoptosis.
ROS↑, BA induced ROS production dose-dependently
eff↓, Co-incubation with NAC effectively blocked ROS production (Figure 4B), rescued cell viability,


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 ⓘ

ROS↑, 2,   mt-ROS↑, 2,   SOD2↓, 1,  

Mitochondria & Bioenergetics ⓘ

MMP↓, 1,  

Core Metabolism/Glycolysis ⓘ

AMPK↑, 2,   p‑AMPK↑, 1,   Glycolysis↓, 1,  

Cell Death ⓘ

Apoptosis↑, 1,   Casp↑, 1,   Casp3↑, 1,   Casp9↑, 1,   Cyt‑c↑, 2,   Diablo↑, 1,  

Kinase & Signal Transduction ⓘ

Sp1/3/4↓, 2,  

Transcription & Epigenetics ⓘ

miR-21↓, 1,   tumCV↓, 1,  

Protein Folding & ER Stress ⓘ

CHOP↑, 1,   GRP78/BiP↑, 1,   PERK↑, 1,  

Autophagy & Lysosomes ⓘ

LC3B-II↑, 1,   TumAuto↑, 1,  

DNA Damage & Repair ⓘ

DNAdam↑, 1,  

Proliferation, Differentiation & Cell State ⓘ

BMI1↓, 1,   EMT↓, 1,   Gli1↓, 1,   mTOR↓, 2,   P90RSK↓, 1,   PTCH1↓, 1,   STAT3↓, 1,   p‑STAT3↓, 1,  

Migration ⓘ

GLI2↓, 1,   MALAT1↓, 1,   MMP2↓, 2,   MMP9↓, 1,   TumCI↓, 1,   TumCMig↓, 1,   TumCP↓, 1,  

Angiogenesis & Vasculature ⓘ

angioG↓, 1,   EGFR↓, 1,   Hif1a↓, 1,   VEGF↓, 1,  

Barriers & Transport ⓘ

GLUT1↑, 1,  

Immune & Inflammatory Signaling ⓘ

JAK1↓, 1,   JAK2↓, 1,   NF-kB↓, 2,   NF-kB↑, 1,  

Drug Metabolism & Resistance ⓘ

ChemoSen↑, 1,   eff↓, 1,   eff↑, 1,   RadioS↑, 1,   selectivity↑, 1,  

Clinical Biomarkers ⓘ

EGFR↓, 1,  

Functional Outcomes ⓘ

chemoPv↑, 1,  
Total Targets: 53

Pathway results for Effect on Normal Cells:


Mitochondria & Bioenergetics ⓘ

UCP1↓, 1,  

Core Metabolism/Glycolysis ⓘ

AMPK↑, 1,   GlucoseCon↑, 1,   Glycolysis↑, 1,  

Cell Death ⓘ

Apoptosis↓, 1,  

Functional Outcomes ⓘ

toxicity↓, 2,  
Total Targets: 6

Scientific Paper Hit Count for: AMPK, adenosine monophosphate-activated protein kinase
4 Betulinic acid
1 Chemotherapy
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#:42  Target#:9  State#:%  Dir#:%
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