Database Query Results : Magnetic Fields, , UPR

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.
UPR, Unfolded Protein Response: Click to Expand ⟱
Source:
Type:
Cellular stress response related to the endoplasmic reticulum (ER) stress, which involves protein folding, quality control, and signaling pathways. The unfolded protein response (UPR) is the cells' way of maintaining the balance of protein folding in the endoplasmic reticulum. (UPR) is triggered by the presence of misfolded proteins in the endoplasmic reticulum.
The UPR is a cellular stress response activated by the accumulation of unfolded or misfolded proteins in the endoplasmic reticulum (ER).
- It is primarily mediated by three ER-resident sensors: IRE1α, PERK, and ATF6.

Cancer cells often experience high levels of protein synthesis, hypoxia, nutrient deprivation, and oxidative stress, all of which can activate the UPR.
– Numerous studies have reported that key UPR components (e.g., GRP78/BiP, IRE1α, PERK, CHOP) are overexpressed in various malignancies such as breast, pancreatic, lung, and prostate cancers.

Unfolded Protein Response is typically upregulated in cancers and is associated with poorer prognosis due to its role in promoting cell survival, adaptation to stress, and therapeutic resistance. Although the UPR harbors the potential for tumor-suppressive (apoptotic) effects under severe stress conditions, its predominant activation in tumors supports an adaptive, protumorigenic state that facilitates cancer progression. Targeting UPR components and modulating this balance remain promising therapeutic strategies.
Scientific Papers found: Click to Expand⟱
3457- MF,    Cellular stress response to extremely low‐frequency electromagnetic fields (ELF‐EMF): An explanation for controversial effects of ELF‐EMF on apoptosis
- Review, Var, NA
Apoptosis↑, Ding et al., 8 it was demonstrated that 24‐h exposure to 60 Hz, 5 mT ELF‐EMF could potentiate apoptosis induced by H2O2 in HL‐60 leukaemia cell lines.
H2O2↑,
ROS↑, One of the main mechanisms proposed for defining anticancer effects of ELF‐EMF is induction of apoptosis through upregulation of reactive oxygen species (ROS) which has also been confirmed by different experimental studies.
eff↑, intermittent 100 Hz, 0.7 mT EMF significantly enhanced rate of apoptosis in human hepatoma cell lines pretreated with low‐dose X‐ray radiation.
eff↑, 50 Hz, 45 ± 5 mT pulsed EMF, significantly potentiated rate of apoptosis induced by cyclophosphamide and colchicine
Ca+2↑, Over the past few years, lots of data have shown that ELF‐EMF exposure regulates intracellular Ca2+ level
MAPK↑, Mitogen‐activated protein kinase (MAPK) cascades are among the other important signalling cascades which are stimulated upon exposure to ELF‐EMF in several types of examined cells
*Catalase↑, ELF‐EMF exposure can upregulate expression of different antioxidant target genes including CAT, SOD1, SOD2, GPx1 and GPx4.
*SOD1↑,
*GPx1↑,
*GPx4↑,
*NRF2↑, Activation and upregulation of Nrf2 expression, the master redox‐sensing transcription factor may be the most prominent example in this regard which has been confirmed in a Huntington's disease‐like rat model.
TumAuto↑, Activation of autophagy, ER stress, heat‐shock response and sirtuin 3 expression are among the other identified cellular stress responses to ELF‐EMF exposure
ER Stress↑,
HSPs↑,
SIRT3↑,
ChemoSen↑, Contrarily, when chemotherapy and ELF‐EMF exposure are performed simultaneously, this increase in ROS levels potentiates the oxidative stress induced by chemotherapeutic agents
UPR↑, In consequence of ER stress, cells begin to initiate UPR to counteract stressful condition.
other↑, Since the only proven effects of ELF‐EMF exposure on cells are cellular adaptive responses, ROS overproduction and intracellular calcium overload
PI3K↓, figure 3
JNK↑,
p38↑,
eff↓, ontrarily, when cells are exposed to ELF‐EMF, a new source of ROS production is introduced in cells which can at least partially reverse anticancer effects observed with cell's treatment with melatonin.
*toxicity?, More importantly, ELF‐EMF exposure to normal cells in most cases has shown to be safe and un‐harmful.

3458- MF,    Magnetic Control of Protein Expression via Magneto-mechanical Actuation of ND-PEGylated Iron Oxide Nanocubes for Cell Therapy
- in-vitro, GBM, NA
ER Stress↑, Western blot studies indicated actuated, intracellular cubic ND-PEG-SPIONs can cause mild ER stress at short periods (up to 3 h) of postmagnetic field treatment thus leading to the unfolded protein response
UPR↑,
Ca+2↑, Studies have shown that applying low-frequency magnetic fields (50 Hz) to young rats leads to stimulation of Ca2+ channel transport and therefore increases intracellular Ca2+ levels.
TRAIL↓, n the present study, we observed a similar effect where MMA caused ER stress, which resulted in a decrease in TRAIL secretion in tC17.2 stem cells
GRP78/BiP↑, A slight expression increase was also noted for the other chaperone, GRP78, for all treatment conditions.


* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 2

Pathway results for Effect on Cancer / Diseased Cells:


Redox & Oxidative Stress ⓘ

H2O2↑, 1,   ROS↑, 1,   SIRT3↑, 1,  

Cell Death ⓘ

Apoptosis↑, 1,   JNK↑, 1,   MAPK↑, 1,   p38↑, 1,   TRAIL↓, 1,  

Transcription & Epigenetics ⓘ

other↑, 1,  

Protein Folding & ER Stress ⓘ

ER Stress↑, 2,   GRP78/BiP↑, 1,   HSPs↑, 1,   UPR↑, 2,  

Autophagy & Lysosomes ⓘ

TumAuto↑, 1,  

Proliferation, Differentiation & Cell State ⓘ

PI3K↓, 1,  

Migration ⓘ

Ca+2↑, 2,  

Drug Metabolism & Resistance ⓘ

ChemoSen↑, 1,   eff↓, 1,   eff↑, 2,  
Total Targets: 19

Pathway results for Effect on Normal Cells:


Redox & Oxidative Stress ⓘ

Catalase↑, 1,   GPx1↑, 1,   GPx4↑, 1,   NRF2↑, 1,   SOD1↑, 1,  

Functional Outcomes ⓘ

toxicity?, 1,  
Total Targets: 6

Scientific Paper Hit Count for: UPR, Unfolded Protein Response
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

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