Database Query Results : Magnetic Fields, , PARP

MF, Magnetic Fields: Click to Expand ⟱
Features: Therapy
Magnetic Fields can be Static, or pulsed. The most common therapy is a pulsed magnetic field in the uT or mT range.
The main pathways affected are:
Calcium Signaling: -influence the activity of voltage-gated calcium channels.
Oxidative Stress and Reactive Oxygen Species (ROS) Pathways
Heat Shock Proteins (HSPs) and Cellular Stress Responses
Cell Proliferation and Growth Signaling: MAPK/ERK pathway.
Gene Expression and Epigenetic Modifications: NF-κB
Angiogenesis Pathways: VEGF (improving VEGF for normal cells)
PEMF was found to have a 2-fold increase in drug uptake compared to traditional electrochemotherapy in rat melanoma models

Pathways:
- most reports have ROS production increasing in cancer cells , while decreasing in normal cells.
- ROS↑ related: MMP↓(ΔΨm), ER Stress↑, UPR↑, GRP78↑, Ca+2↑, Cyt‑c↑, Caspases↑, DNA damage↑, cl-PARP↑, HSP↓, Prx,
- Raises AntiOxidant defense in Normal Cells: ROS↓, NRF2↑, SOD↑, GSH↑, Catalase↑,
- lowers Inflammation : NF-kB↓, COX2↓, Pro-Inflammatory Cytokines : NLRP3↓, IL-1β↓, TNF-α↓, IL-6↓, IL-8↓
- inhibit Growth/Metastases : TumMeta↓, TumCG↓, VEGF↓(mostly regulated up in normal cells),
- cause Cell cycle arrest : TumCCA↑,
- inhibits Migration/Invasion : TumCMig↓, TumCI↓, TNF-α↓,
- inhibits glycolysis /Warburg Effect and ATP depletion : HIF-1α↓, PKM2↓, GLUT1↓, LDH↓, HK2↓, PFKs↓, PDKs↓, ECAR↓, OXPHOS↓, GRP78↑, Glucose↓, GlucoseCon↓
- inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, Notch↓, FGF↓, PDGF↓, EGFR↓, Integrins↓,
- Others: PI3K↓, AKT↓, STAT↓, Wnt↓, β-catenin↓, ERK↓, JNK, - SREBP (related to cholesterol).
- Synergies: chemo-sensitization, chemoProtective, cytoProtective, RadioSensitizer, RadioProtective, Others(review target notes), Neuroprotective, Hepatoprotective, CardioProtective,

- Selectivity: Cancer Cells vs Normal Cells

Non-Static Magnetic Fields (AC / Pulsed / Oscillating MF)
Rank Pathway / Axis Cancer Cells Normal Cells TSF Primary Effect Notes / Interpretation
1 Reactive oxygen species (ROS) ↑ ROS (P→R); often sustained (G) ↑ ROS (P); ↔/↓ net ROS (R→G) P, R, G Upstream redox perturbation MF perturbs electron/radical dynamics: normal cells often adapt (ROS setpoint ↓), cancer cells less so
2 NRF2 antioxidant response ↔ / insufficient NRF2 induction (R→G) ↑ NRF2 activation (R→G) R, G Adaptive redox defense Explains mixed ROS direction in normal cells (initial ↑ then adaptive ↓)
3 Glutathione (GSH) homeostasis ↓ GSH (R→G) ↔ or transient ↓ (R) with recovery (G) R, G Redox buffering capacity GSH depletion reflects sustained oxidative load; recovery indicates successful adaptation
4 Superoxide dismutase (SOD) / antioxidant enzymes ↔ or inadequate enzyme upshift (G) ↑ SOD/GPx/CAT capacity (G) G Longer-term antioxidant remodeling Often the “endpoint” readout that correlates with ROS-normalization in normal tissue
5 Mitochondrial ETC / respiration ↓ ETC efficiency; ↑ electron leak (P→R) ↔ mild, reversible ETC perturbation (P→R) P, R Bioenergetic destabilization ETC perturbation is a mechanistic bridge between MF exposure and ROS/ΔΨm changes
6 Mitochondrial membrane potential (ΔΨm / MMP) ↓ ΔΨm (R); may progress (G) ↔ preserved or reversible dip (R) R, G Mitochondrial dysfunction thresholding ΔΨm loss typically follows ROS/ETC disruption rather than preceding it
7 Ca²⁺ signaling (VGCC / ER–mitochondria Ca²⁺ flux) ↑ dysregulated Ca²⁺ influx/transfer (P→R); overload may persist (G) ↑ transient Ca²⁺ signaling (P); homeostasis restored (R→G) P, R, G Stress signal amplification Ca²⁺ dysregulation links ROS/ETC perturbation to ER stress and mitochondrial dysfunction (amplifies ΔΨm loss and UPR commitment)
8 Mitochondrial permeability transition pore (MPTP) ↑ MPTP opening propensity (R); sustained opening possible (G) ↔ transient or closed (R→G) P, R, G Commitment point for mitochondrial failure MPTP opening integrates ROS, Ca²⁺ overload, and ΔΨm loss; acts as a threshold event converting reversible stress into irreversible mitochondrial dysfunction
9 ER stress / UPR ↑ ER stress (R); CHOP-commitment possible (G) ↑ adaptive UPR (R); resolves (G) R, G Proteostasis stress Often downstream of ROS + Ca²⁺ handling perturbations
10 DNA damage (oxidative) ↑ damage markers (R→G) ↔ or repaired (G) R, G Checkpoint pressure Generally secondary to ROS; interpret as stress consequence not “direct genotoxicity”
11 LDH / glycolytic flux ↓ glycolytic performance (R→G) ↔ flexible substrate switching (R→G) R, G Metabolic vulnerability Redox imbalance can destabilize high-rate glycolysis in cancer-biased contexts
12 Thioredoxin system (Trx / TrxR) ↓ functional reserve / overload (R→G) ↔ preserved capacity (G) R, G Parallel antioxidant system stress Useful when GSH-only does not explain redox phenotype 
Time-Scale Flag: TSF = P / R / G
  P: 0–30 min (physical / electron / radical effects)
  R: 30 min–3 hr (redox signaling & stress response)
  G: >3 hr (gene-regulatory adaptation)
MPTP: opening represents a mitochondrial commitment event integrating ROS and Ca²⁺ stress; sustained opening indicates irreversible bioenergetic failure.
PARP, poly ADP-ribose polymerase (PARP) cleavage: Click to Expand ⟱
Source:
Type:
Poly (ADP-ribose) polymerase (PARP) cleavage is a hallmark of caspase activation. PARP (Poly (ADP-ribose) polymerase) is a family of proteins involved in a variety of cellular processes, including DNA repair, genomic stability, and programmed cell death. PARP enzymes play a crucial role in repairing single-strand breaks in DNA.
PARP has gained significant attention, particularly in the treatment of certain types of tumors, such as those with BRCA1 or BRCA2 mutations. These mutations impair the cell's ability to repair double-strand breaks in DNA through homologous recombination. Cancer cells with these mutations can become reliant on PARP for survival, making them particularly sensitive to PARP inhibitors.
PARP inhibitors, such as olaparib, rucaparib, and niraparib, have been developed as targeted therapies for cancers associated with BRCA mutations.

PARP Family:
The poly (ADP-ribose) polymerases (PARPs) are a family of enzymes involved in a number of cellular processes, including DNA repair, genomic stability, and programmed cell death.
PARP1 is the predominant family member responsible for detecting DNA strand breaks and initiating repair processes, especially through base excision repair (BER).

PARP1 Overexpression:
In several cancer types—including breast, ovarian, prostate, and lung cancers—elevated PARP1 expression and/or activity has been reported.
High PARP1 expression in certain cancers has been associated with aggressive tumor behavior and resistance to therapies (especially those that induce DNA damage).
Increased PARP1 activity may correlate with poorer overall survival in tumors that rely on DNA repair for survival.
Scientific Papers found: Click to Expand⟱
496- MF,    Low-Frequency Magnetic Fields (LF-MFs) Inhibit Proliferation by Triggering Apoptosis and Altering Cell Cycle Distribution in Breast Cancer Cells
- in-vitro, BC, MCF-7 - in-vitro, BC, ZR-75-1 - in-vitro, BC, T47D - in-vitro, BC, MDA-MB-231
ROS↑, LF-MFs Enhanced the ROS Levels in MCF-7 and ZR75-1 Cells
PI3K↓, and inhibited the activities of the PI3K/AKT signaling pathways in MCF-7 and ZR-75-1 cells
Akt↓,
GSK‐3β↑, LF-MF Induced MCF-7 and ZR75-1 Cells Apoptosis by Activating GSK-3β
Apoptosis↑, LF-MF Induced Breast Cancer Cell Apoptosis
cl‑PARP↑, cleaved PARP-1
cl‑Casp3↑,
BAX↑,
Bcl-2↓,
CycB/CCNB1↓, Cyclin B1
TumCCA↑, failure of the transition from the G2 phase to M phase
p‑Akt↓,
TumCP↓, LF-MF Inhibited the Proliferation of Breast Cancer Cells
selectivity↑, The viabilities of HUVECs did not markedly reduce after exposure in LF-MF at the four selected frequencies for 6, 12, 24 or 36 h
eff↓, attenuated by ROS scavenger NAC

4353- MF,  Chemo,    Pulsed Electromagnetic Field Enhances Doxorubicin-induced Reduction in the Viability of MCF-7 Breast Cancer Cells
- in-vitro, BC, MCF-7
TumCCA↑, PEMF enhances the anticancer activity in DOX-treated MCF-7 breast cancer cells by increasing G1 cell cycle arrest and caspase-dependent apoptosis.
Apoptosis↑, we report that PEMF stimulation enhances the reduction in the cell viability by enhancing cell cycle arrest and apoptosis in MCF-7 breast cancer cells.
eff↑, extremely low frequency (ELF)-EMF can increase the cytotoxic effect of DOX on MCF-7 breast cancer cells compared with treatment with DOX alone
TumCCA↑, we report here that PEMF enhances DOX-induced cell cycle arrest in G1 phase and caspase-dependent apoptosis
Casp↝, PEMF promoted the DOX-induced activation of caspases-8, -9, and -7
p‑CDK2↓, combined treatment with DOX and PEMF produced the further reduction in CDK2 phosphorylation and cyclin E2 expression when compared to treatment with DOX alone
cycE/CCNE↓,
Fas↑, expression of Fas and Bax was elevated to a larger degree in the DOX/PEMF-treated cells than in the DOX-treated cells
BAX↑,
survivin↓, expression of survivin was decreased in the DOX-treated cells and further reduced in the DOX/PEMF-treated cells
Mcl-1↓, Mcl-1 expression was reduced in the DOX/PEMF-treated cells compared to the DOX-treated cells
cl‑PARP↑, increased PARP cleavage was observed in the DOX/PEMF-treated cells
cl‑Casp7↑, caspase-7 was higher in the DOX-treated cells than in the control group and was further higher in the DOX/PEMF-treated cells
cl‑Casp8↑, Cleavage of caspase-8 and -9 were elevated in the DOX-treated cells and increased even more in the DOX/PEMF-treated cells
cl‑Casp9↑,

3486- MF,    Pulsed electromagnetic field potentiates etoposide-induced MCF-7 cell death
- in-vitro, NA, NA
ChemoSen↑, It is established that pulsed electromagnetic field (PEMF) therapy can enhance the effects of anti-cancer chemotherapeutic agents
tumCV↓, co-treatment with etoposide and PEMFs led to a decrease in viable cells compared with cells solely treated with etoposide.
cl‑PARP↑, PEMFs elevated the etoposide-induced PARP cleavage and caspase-7/9 activation and enhanced the etoposide-induced down-regulation of survivin and up-regulation of Bax.
Casp7↑,
Casp9↑,
survivin↓,
BAX↑,
DNAdam↑, PEMF also increased the etoposide-induced activation of DNA damage-related molecules
ROS↑, the reactive oxygen species (ROS) level was slightly elevated during etoposide treatment and significantly increased during co-treatment with etoposide and PEMF.
eff↓, Moreover, treatment with ROS scavenger restored the PEMF-induced decrease in cell viability in etoposide-treated MCF-7 cells


* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 3

Pathway results for Effect on Cancer / Diseased Cells:


Redox & Oxidative Stress ⓘ

ROS↑, 2,  

Cell Death ⓘ

Akt↓, 1,   p‑Akt↓, 1,   Apoptosis↑, 2,   BAX↑, 3,   Bcl-2↓, 1,   Casp↝, 1,   cl‑Casp3↑, 1,   Casp7↑, 1,   cl‑Casp7↑, 1,   cl‑Casp8↑, 1,   Casp9↑, 1,   cl‑Casp9↑, 1,   Fas↑, 1,   Mcl-1↓, 1,   survivin↓, 2,  

Transcription & Epigenetics ⓘ

tumCV↓, 1,  

DNA Damage & Repair ⓘ

DNAdam↑, 1,   cl‑PARP↑, 3,  

Cell Cycle & Senescence ⓘ

p‑CDK2↓, 1,   CycB/CCNB1↓, 1,   cycE/CCNE↓, 1,   TumCCA↑, 3,  

Proliferation, Differentiation & Cell State ⓘ

GSK‐3β↑, 1,   PI3K↓, 1,  

Migration ⓘ

TumCP↓, 1,  

Drug Metabolism & Resistance ⓘ

ChemoSen↑, 1,   eff↓, 2,   eff↑, 1,   selectivity↑, 1,  
Total Targets: 30

Pathway results for Effect on Normal Cells:


Total Targets: 0

Scientific Paper Hit Count for: PARP, poly ADP-ribose polymerase (PARP) cleavage
3 Magnetic Fields
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#:172  Target#:239  State#:%  Dir#:%
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