Database Query Results : Electrical Pulses, ,

EP, Electrical Pulses: Click to Expand ⟱

Features:

Electrical Pulses (Pulsed Electric Field therapies; PEF) are a bioelectromagnetic modality in oncology that delivers brief, high-voltage (or high-field) pulses to tissue to permeabilize membranes and/or ablate tumors. Clinically relevant categories commonly discussed:
(1) Reversible electroporation for drug/ion delivery (Electrochemotherapy, ECT; Calcium electroporation),
(2) Irreversible electroporation ablation (IRE; e.g., NanoKnife-type approaches), and
(3) Nanosecond PEF (nsPEF) aimed at intracellular targets.
Primary mechanisms (ranked):
1) Membrane electroporation → rapid loss of ionic homeostasis / enhanced transport (ECT) or irreversible disruption (IRE).
2) Ca²⁺ dysregulation (influx + organelle Ca²⁺ stress) → mitochondrial depolarization, ER stress, apoptosis/necrosis spectrum (pulse-width dependent).
3) Stress biology (ROS↑, inflammatory/DAMP signaling) → immunogenic cell death signals and microenvironment remodeling (often secondary/adaptive).
PK/Bioavailability relevance: systemic PK is mainly relevant only for ECT (bleomycin/cisplatin timing, tissue exposure); field-based effects themselves are local and device/geometry-limited rather than concentration-limited.
In-vitro vs systemic exposure: not concentration-driven (electric field–driven); however, many in-vitro protocols use idealized field homogeneity not achievable in heterogeneous tumors without image-guided electrode placement.
Clinical evidence: ECT and IRE have substantial human use (ECT for cutaneous/superficial tumors; IRE for selected solid tumors near critical structures). nsPEF remains mostly preclinical/early human and is still device- and protocol-evolving.

Electrical Pulses / PEF Oncology Modality — Ranked Mechanistic Axes

Rank	Pathway / Axis	Cancer Cells (↑ / ↓ / ↔)	Normal Cells (↑ / ↓ / ↔)	TSF	Primary Effect	Notes / Interpretation
1	Membrane electroporation (Reversible vs Irreversible)	↑ permeabilization / disruption	↑ permeabilization / disruption	P	Immediate loss of membrane barrier	Category mapping: Reversible EP → ECT / Ca-EP; Irreversible EP → IRE. Selectivity is largely geometric (field distribution) and cellular (repair capacity), not “cancer-only”.
2	ECT drug uptake (bleomycin/cisplatin) / intracellular access	↑ intracellular drug delivery	↑ intracellular drug delivery	P→R	Local chemosensitization	Category: ECT is a delivery amplifier; efficacy depends on timing + local perfusion. Often enables potent effect from otherwise poorly permeant agents.
3	Ca²⁺ axis (influx, overload, ER–mitochondria coupling)	↑ Ca²⁺ dysregulation	↑ Ca²⁺ dysregulation	P→R	Mitochondrial stress, apoptosis/necrosis spectrum	Pulse width and repetition strongly shape outcome; Ca electroporation leverages Ca²⁺-driven bioenergetic collapse as a drug-free approach.
4	Mitochondria / MPTP + bioenergetic collapse	↑ depolarization / ATP loss	↑ depolarization / ATP loss	R	Cell death execution + metabolic failure	Often downstream of Ca²⁺ overload + membrane failure; nsPEF is frequently framed as more “intracellular/organellar” stress-forward than classic µs EP.
5	ROS (oxidative burst → signaling)	↑ (context-dependent)	↑ (context-dependent)	R→G	Stress signaling, damage amplification	ROS can be secondary to Ca²⁺/mitochondria and/or electrochemical effects at electrodes. Direction and magnitude depend on pulse protocol, conductivity, and oxygenation.
6	NRF2 antioxidant response / adaptation	↑ (context-dependent; resistance role)	↑ (protective role)	G	Redox adaptation	NRF2 upshifts can protect normal tissue but may also support tumor survival post-sublethal EP (repair/tolerance). Relevance rises when aiming for non-ablative or fractionated protocols.
7	Vascular axis (perfusion, endothelial effects)	↓ perfusion (often) / local ischemia	↓ perfusion (local)	R	Secondary tumor control via antivascular effects	Prominent in ECT literature (composite antivascular + cytotoxic). In IRE, ECM sparing may preserve larger structures while still affecting microvasculature.
8	Immunogenic cell death / DAMP release	↑ immune priming signals	↔ (tissue-dependent)	G	Local-to-systemic immune modulation (adjunct potential)	Most compelling as an adjunct (combo with checkpoint blockade, RT, etc.). Strength varies with ablation completeness, antigen burden, and microenvironment.
9	Clinical Translation Constraint	↔	↔	—	Deliverability / safety / field heterogeneity	Constraints are dominated by geometry (electrode placement, tumor shape, conductivity), safety (muscle contractions, arrhythmia risk near heart, anesthesia needs), and protocol standardization; nsPEF still has broader device/protocol variability than ECT/IRE.

Scientific Papers found: Click to Expand⟱

933-

CUR,

EP,

Effective electrochemotherapy with curcumin in MDA-MB-231-human, triple negative breast cancer cells: A global proteomics study

in-vitro,

BC,

50uM, 1200v/c,100us

Apoptosis↑, ALDOA↓, ENO2↓, LDHA↓, LDHB↓, PFKP↓, PGK1↓, PGM1↓, PGAM1↓, OXPHOS↑, TCA↑,

3460-

EP,

Picosecond pulsed electric fields induce apoptosis in HeLa cells via the endoplasmic reticulum stress and caspase-dependent signaling pathways

in-vitro,

Cerv,

HeLa

tumCV↓, Apoptosis↑, TumCCA↑, GRP78/BiP↑, GRP94↑, CEBPA↑, CHOP↑, Ca+2↑, Casp12↑, Casp9↑, Casp3↑, Cyt‑c↑, BAX↑, Bcl-2↓, ER Stress↑, MMP↓,

5256-

EP,

Pulsed electric fields: a sharp sword in the battle against cancers

Review,

Var,

BioAv↑, TumCD↑, MMP↓, Apoptosis↑, TumCCA↑, Imm↑, RadioS↑, ChemoSen↑,

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

Pathway results for Effect on Cancer / Diseased Cells:

Drug Metabolism & Resistance ⓘ

BioAv↑, 1, ChemoSen↑, 1, RadioS↑, 1,
Total Targets: 31

Pathway results for Effect on Normal Cells:

Total Targets: 0

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#:248  Target#:%  State#:%  Dir#:%
  wNotes=0  sortOrder:rid,rpid

Database Query Results : Electrical Pulses, ,

Electrical Pulses / PEF Oncology Modality — Ranked Mechanistic Axes

Pathway results for Effect on Cancer / Diseased Cells:

Redox & Oxidative Stress ⓘ

Mitochondria & Bioenergetics ⓘ

Core Metabolism/Glycolysis ⓘ

Cell Death ⓘ

Transcription & Epigenetics ⓘ

Protein Folding & ER Stress ⓘ

Cell Cycle & Senescence ⓘ

Proliferation, Differentiation & Cell State ⓘ

Migration ⓘ

Immune & Inflammatory Signaling ⓘ

Drug Metabolism & Resistance ⓘ

Pathway results for Effect on Normal Cells:

Home Page