Ashwagandha(Withaferin A) / mTOR Cancer Research Results

Ash, Ashwagandha(Withaferin A): Click to Expand ⟱
Features:

Ashwagandha (Withaferin A) — Withaferin A (WA; WFA) is a bioactive steroidal lactone (a “withanolide”) found in Withania somnifera (ashwagandha/Indian ginseng), with most translational oncology discussion centered on WA as a small-molecule electrophile rather than the whole-herb supplement. It is best classified as a natural-product small molecule (steroidal lactone/withanolide) with pleiotropic proteostasis, cytoskeletal, redox-stress, and inflammatory signaling effects; in supplements, WA exposure depends strongly on extract standardization (root vs leaf, % withanolides) and formulation.

Primary mechanisms (ranked):

  1. Hsp90-axis disruption (incl. client protein destabilization) leading to proteostasis stress and multi-client oncoprotein depletion
  2. Covalent targeting of intermediate filaments (notably vimentin) with downstream effects on adhesion/migration, EMT programs, and angiogenic endothelium
  3. Pro-oxidative stress signaling in cancer cells with mitochondrial dysfunction, ER stress/UPR engagement, and apoptosis execution
  4. Inflammation and survival signaling suppression (notably NF-κB-centric programs; context-dependent immune modulation)
  5. Contextual transcriptional/epigenetic modulation (e.g., HDAC/DNMT-related signals) contributing to anti-proliferative phenotypes
  6. Metabolic stress signaling (glycolysis/HIF-1α/ATP depletion) as a secondary vulnerability in susceptible models

Bioavailability / PK relevance: WA shows measurable systemic exposure in animals (reported oral bioavailability in rats), but PK is variable across species, doses, and extract matrices; human exposure data exist from a phase I osteosarcoma study and from healthy-volunteer PK work on standardized Withania extracts measuring circulating withanolides (including WA). WA is lipophilic and subject to first-pass metabolism; typical pharmacodynamic in-vitro micromolar concentrations may exceed achievable unbound plasma levels depending on formulation and dosing.

In-vitro vs systemic exposure relevance: Many mechanistic cancer studies use ~1–10 µM WA; translation requires caution because free (unbound) systemic concentrations and tumor penetration are not well-constrained in humans, and whole-extract products can have low/variable WA content (model- and formulation-dependent).

Clinical evidence status: Limited human oncology evidence: a phase I study in advanced high-grade osteosarcoma reported feasibility/safety and proposed a daily dose level; an active clinical trial evaluates an ashwagandha/withaferin-A strategy with liposomal doxorubicin in recurrent ovarian cancer. Most anticancer support remains preclinical, while non-oncology human data for ashwagandha primarily address stress/sleep and are not evidence of anticancer efficacy.

The main active constituents of Ashwagandha leaves are alkaloids and steroidal lactones (commonly known as Withanolides).
-The main constituents of ashwagandha are withanolides such as withaferin A, alkaloids, steroidal lactones, tropine, and cuscohygrine.
Ashwagandha is an herb that may reduce stress, anxiety, and insomnia.
*-Ashwagandha is often characterized as an antioxidant.
-Some studies suggest that while ashwagandha may protect normal cells from oxidative damage, it can simultaneously stress cancer cells by tipping their redox balance toward cytotoxicity.
Pathways:
-Induction of Apoptosis and ROS Generation
-Hsp90 Inhibition and Proteasomal Degradation

Cell culture studies vary widely, typically ranging from low micromolar (e.g., 1–10 µM).
In animal models (commonly mice), Withaferin A has been administered in doses ranging from approximately 2 to 10 mg/kg body weight.
- General wellness, Ashwagandha supplements are sometimes taken in doses ranging from 300 mg to 600 mg of an extract (often standardized to contain a certain percentage of withanolides) once or twice daily.
- 400mg of WS extract was given 3X/day to schizophrenia patients. report#2001.
- Ashwagandha Pure 400mg/capsule is available from mcsformulas.com.

-Note half-life 4-6 hrs?.
BioAv
Pathways:
- well-recognized for promoting ROS in cancer cells, while no effect(or reduction) on normal cells.
- ROS↑ related: MMP↓(ΔΨm), ER Stress↑, UPR↑, GRP78↑, Cyt‑c↑, Caspases↑, DNA damage↑, cl-PARP↑, HSP↓, Prx,
- Confusing results about Lowering AntiOxidant defense in Cancer Cells: NRF2↓, TrxR↓**, SOD↓, GSH↓ Catalase↓ HO1↓ GPx↓
- Raises AntiOxidant defense in Normal Cells: ROS↓, NRF2↑, SOD↑, GSH↑, Catalase↑,
- lowers Inflammation : NF-kB↓, COX2↓, p38↓, Pro-Inflammatory Cytokines : NLRP3↓, IL-1β↓, TNF-α↓, IL-6↓, IL-8↓
- inhibit Growth/Metastases : TumMeta↓, TumCG↓, EMT↓, MMPs↓, MMP2↓, MMP9↓, TIMP2, uPA↓, VEGF↓, ROCK1↓, NF-κB↓, CXCR4↓, SDF1↓, TGF-β↓, α-SMA↓, ERK↓
- reactivate genes thereby inhibiting cancer cell growth : HDAC↓(combined with sulfor), DNMT1↓, DNMT3A↓, P53↑, HSP↓, Sp proteins↓, TET↑
- cause Cell cycle arrest : TumCCA↑, cyclin E↓, CDK2↓, CDK4↓,
- inhibits Migration/Invasion : TumCMig↓, TumCI↓, TNF-α↓, ERK↓, EMT↓, TOP1↓,
- inhibits glycolysis /Warburg Effect and ATP depletion : HIF-1α↓, PKM2↓, cMyc↓, GLUT1↓, LDH↓, LDHA↓, HK2↓, OXPHOS↓, GRP78↑, GlucoseCon↓
- inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, Notch↓, PDGF↓, EGFR↓, Integrins↓,
- inhibits Cancer Stem Cells : CSC↓, β-catenin↓, sox2↓,
- Others: PI3K↓, AKT↓, JAK↓, STAT↓, Wnt↓, β-catenin↓, AMPK, α↓, ERK↓, JNK,
- Synergies: chemo-sensitization, chemoProtective, RadioSensitizer, RadioProtective, Others(review target notes), Neuroprotective, Cognitive, Renoprotection, Hepatoprotective, CardioProtective,

- Selectivity: Cancer Cells vs Normal Cells

Mechanistic pathway map for Ashwagandha (Withaferin A) in cancer biology

Rank Pathway / Axis Cancer Cells Normal Cells TSF Primary Effect Notes / Interpretation
1 Hsp90 proteostasis axis Hsp90 functional inhibition → client proteins ↓ (Akt/EGFR/HER2/Raf/Cdk etc.) → growth/survival signaling ↓ Stress-response engagement possible; tolerability is dose/formulation dependent R Multi-node oncogenic network destabilization Often presented as ATP-independent Hsp90 inhibition with downstream proteasomal degradation of clients; mechanistically central because it collapses multiple driver pathways at once.
2 Vimentin and intermediate filament remodeling Vimentin function/organization ↓ → migration/invasion ↓, EMT programs ↓ (context-dependent) Endothelial and stromal cytoskeleton can be affected; may underlie anti-angiogenic activity P Anti-motility / anti-metastatic leverage WA behaves as a reactive small molecule with reported covalent interaction with vimentin; cytoskeletal perturbation can be rapid and not strictly transcription-driven.
3 Mitochondrial ROS increase ROS ↑ → ΔΨm ↓, cyt-c ↑, caspase cascade ↑ → apoptosis ↑ Often ROS ↔ or ↓ with antioxidant response ↑ (model-dependent) P/R Selective redox toxicity in susceptible tumors Frequently paired with ER stress/UPR activation; selectivity is commonly framed as “push cancer over its redox limit,” but this is highly dose- and context-dependent.
4 ER stress and UPR axis ER stress ↑, UPR ↑ → proteotoxic stress → apoptosis/autophagy shifts (model-dependent) Adaptive UPR may occur; excessive dosing can stress normal tissues R Proteotoxic stress amplification Mechanistically synergistic with Hsp90 disruption and ROS signaling; can manifest as GRP78/BiP and related markers ↑ in some systems.
5 NF-κB inflammatory survival signaling NF-κB ↓ → cytokine/pro-survival programs ↓, invasion-associated signaling ↓ Anti-inflammatory signaling ↓ may be beneficial in some contexts; immune effects can be mixed G Survival/inflammation program suppression Often aligned with COX-2 and inflammasome-related readouts in inflammatory models; oncology relevance is strongest where NF-κB is a core survival node.
6 EMT and metastasis signaling EMT ↓, MMPs ↓, uPA ↓, CXCR4/SDF1 axis ↓ (model-dependent) Wound-healing programs can be affected (context-dependent) G Anti-invasive phenotype Partly downstream of cytoskeletal (vimentin) effects and NF-κB/TGF-β-linked programs; directionality can vary by tumor lineage and assay.
7 Glycolysis and HIF-1α HIF-1α ↓, glycolysis flux ↓, ATP ↓ (susceptible models) Usually ↔ at low exposure; metabolic stress possible at higher exposure G Metabolic vulnerability unmasking Often secondary to upstream stress (ROS/proteostasis) rather than a primary enzymatic inhibitor; interpret as (context-dependent).
8 Cell cycle checkpoint control Cell-cycle arrest ↑ (often G2/M reported), CDK/cyclin signaling ↓ Proliferating normal cells may also be sensitive at higher exposure G Anti-proliferative enforcement Common phenotype readout across WA studies; mechanistic “why” may differ by model (proteostasis vs ROS vs mitotic machinery/cytoskeleton).
9 NRF2 and antioxidant defense NRF2 ↓ and antioxidant enzymes ↓ reported in some cancer models; sometimes mixed ↔ NRF2 ↑ and antioxidant enzymes ↑ reported in some normal-tissue protection contexts G Redox buffering divergence Highly model-dependent; WA can behave as a stressor that either suppresses or activates NRF2-linked programs depending on timing, dose, and baseline redox state.
10 Clinical Translation Constraint Micromolar in-vitro dosing common; human oncology exposure/target engagement remains sparsely defined Supplement heterogeneity (WA content), drug-interaction risk, and organ-specific toxicity signals (notably liver; thyroid) constrain use — Formulation + PK + safety gating Human data exist (phase I osteosarcoma; ongoing ovarian combo), but WA is not an approved anticancer drug and standardized products/target engagement biomarkers are not yet mature.

TSF legend: P: 0–30 min    R: 30 min–3 hr    G: >3 hr
mTOR, mammalian target of rapamycin: Click to Expand ⟱
Source: HalifaxProj (inhibit)
Type:
mTOR (mechanistic target of rapamycin) is a central regulator of cell growth, proliferation, metabolism, and survival. It is a serine/threonine kinase that integrates signals from nutrients, growth factors, and cellular energy status.
mTOR promotes protein synthesis and cell growth by activating downstream targets such as S6 kinase and 4E-BP1. In cancer, this pathway can become hyperactivated, leading to uncontrolled cell proliferation.

mTor Inhibitors:
-rapamycin (Sirolimus): classic natural product mTOR inhibitor
-Curcumin
-Resveratrol
-Epigallocatechin Gallate (EGCG)
-Honokiol
Scientific Papers found: Click to Expand⟱
3166- Ash,    Exploring the Multifaceted Therapeutic Potential of Withaferin A and Its Derivatives
- Review, Var, NA
*p‑PPARγ↓, *cardioP↑, *AMPK↑, *BioAv↝, *Half-Life↝, *Half-Life↝, *Dose↑, *chemoPv↑, IL6↓, STAT3↓, ROS↓, OXPHOS↓, PCNA↓, LDH↓, AMPK↑, TumCCA↑, NOTCH3↓, Akt↓, Bcl-2↓, Casp3↑, Apoptosis↑, eff↑, NF-kB↓, CSCs↓, HSP90↓, PI3K↓, FOXO3↑, β-catenin/ZEB1↓, N-cadherin↓, EMT↓, FASN↓, ACLY↓, ROS↑, NRF2↑, HO-1↑, NQO1↑, JNK↑, mTOR↓, neuroP↑, *TNF-α↓, *IL1β↓, *IL6↓, *IL8↓, *IL18↓, RadioS↑, eff↑,
4678- Ash,    Identification of Withaferin A as a Potential Candidate for Anti-Cancer Therapy in Non-Small Cell Lung Cancer
- vitro+vivo, NSCLC, H1975
ROS↑, AntiTum↑, CSCs↓, mTOR↓, STAT3↓, ChemoSen↑, Keap1↑, NRF2↓,
1357- Ash,    Cytotoxicity of withaferin A in glioblastomas involves induction of an oxidative stress-mediated heat shock response while altering Akt/mTOR and MAPK signaling pathways
- in-vitro, GBM, U87MG - in-vitro, GBM, U251 - in-vitro, GBM, GL26
TumCP↓, TumCCA↑, Akt↓, mTOR↓, p70S6↓, p85S6K↓, AMPKα↑, TSC2↑, HSP70/HSPA5↑, HO-1↑, HSF1↓, Apoptosis↑, ROS↑, eff↓,
3155- Ash,    Overview of the anticancer activity of withaferin A, an active constituent of the Indian ginseng Withania somnifera
- Review, Var, NA
Half-Life↝, Inflam↓, antiOx↓, angioG↓, ROS↑, BAX↑, Bak↑, E6↓, E7↓, P53↑, Casp3↑, cl‑PARP↑, STAT3↓, eff↑, HSP90↓, TGF-β↓, TNF-α↓, EMT↑, mTOR↓, NOTCH1↓, p‑Akt↓, NF-kB↓, Dose↝,

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 ⓘ

antiOx↓, 1,   HO-1↑, 2,   Keap1↑, 1,   NQO1↑, 1,   NRF2↓, 1,   NRF2↑, 1,   OXPHOS↓, 1,   ROS↓, 1,   ROS↑, 4,  

Core Metabolism/Glycolysis ⓘ

ACLY↓, 1,   AMPK↑, 1,   FASN↓, 1,   LDH↓, 1,  

Cell Death ⓘ

Akt↓, 2,   p‑Akt↓, 1,   Apoptosis↑, 2,   Bak↑, 1,   BAX↑, 1,   Bcl-2↓, 1,   Casp3↑, 2,   JNK↑, 1,  

Kinase & Signal Transduction ⓘ

AMPKα↑, 1,   p70S6↓, 1,   TSC2↑, 1,  

Protein Folding & ER Stress ⓘ

HSF1↓, 1,   HSP70/HSPA5↑, 1,   HSP90↓, 2,  

DNA Damage & Repair ⓘ

P53↑, 1,   cl‑PARP↑, 1,   PCNA↓, 1,  

Cell Cycle & Senescence ⓘ

TumCCA↑, 2,  

Proliferation, Differentiation & Cell State ⓘ

CSCs↓, 2,   EMT↓, 1,   EMT↑, 1,   FOXO3↑, 1,   mTOR↓, 4,   NOTCH1↓, 1,   NOTCH3↓, 1,   p85S6K↓, 1,   PI3K↓, 1,   STAT3↓, 3,  

Migration ⓘ

N-cadherin↓, 1,   TGF-β↓, 1,   TumCP↓, 1,   β-catenin/ZEB1↓, 1,  

Angiogenesis & Vasculature ⓘ

angioG↓, 1,  

Immune & Inflammatory Signaling ⓘ

IL6↓, 1,   Inflam↓, 1,   NF-kB↓, 2,   TNF-α↓, 1,  

Drug Metabolism & Resistance ⓘ

ChemoSen↑, 1,   Dose↝, 1,   eff↓, 1,   eff↑, 3,   Half-Life↝, 1,   RadioS↑, 1,  

Clinical Biomarkers ⓘ

E6↓, 1,   E7↓, 1,   IL6↓, 1,   LDH↓, 1,  

Functional Outcomes ⓘ

AntiTum↑, 1,   neuroP↑, 1,  
Total Targets: 62

Pathway results for Effect on Normal Cells:


Core Metabolism/Glycolysis ⓘ

AMPK↑, 1,   p‑PPARγ↓, 1,  

Immune & Inflammatory Signaling ⓘ

IL18↓, 1,   IL1β↓, 1,   IL6↓, 1,   IL8↓, 1,   TNF-α↓, 1,  

Drug Metabolism & Resistance ⓘ

BioAv↝, 1,   Dose↑, 1,   Half-Life↝, 2,  

Clinical Biomarkers ⓘ

IL6↓, 1,  

Functional Outcomes ⓘ

cardioP↑, 1,   chemoPv↑, 1,  
Total Targets: 13

Scientific Paper Hit Count for: mTOR, mammalian target of rapamycin
4 Ashwagandha(Withaferin A)
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#:36  Target#:209  State#:%  Dir#:1
  wNotes=0  sortOrder:rid,rpid

 

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