Silver-NanoParticles / Bacteria Cancer Research Results

AgNPs, Silver-NanoParticles: Click to Expand ⟱
Features:
Silver NanoParticles (AgNPs)
Summary:
1.Smaller sizes are generally more bioactive due to increased surface area and enhanced tumor accumulation via the enhanced permeability and retention (EPR) effect.
2.Two relevant forms: particulate silver (AgNPs) and ionic silver (Ag⁺). There is debate regarding oral use, as Ag⁺ can precipitate as AgCl in gastric acid, reducing bioavailability; AgNPs may partially avoid this via particulate uptake and intracellular Ag⁺ release. Gastric pH may influence this equilibrium.
3. Dose example 80kg person: 1.12-2mg/day, which can be calculated based on ppm and volume taken (see below) target < 10ppm and 120mL per day (30ppm and 1L per day caused argyria 30mg/day ) (Case Report: 9‐15 ppm@120mL, i.e. 1.1mg/L to 1.8mg/L per day)
Likely 10ppm --> 10mg/L, hence if take 100mL, then 1mg/day? (for Cancer)
The current Rfd for oral silver exposure is 5 ug/kg/d with a critical dose estimated at 14 ug/kg/d for the average person.
Seems like the Cancer target range is 14ug/kg/day to 25ug/kg/day. 80Kg example: 1.12mg to 2mg “1.4µg/kg body weight. If I would have 70kg, I would want to use 100µg/day. However, for fighting active disease, I would tend to explore higher daily dose, as I think this may be too low.”
These values reflect experimental or anecdotal contexts and are not established safe or therapeutic doses.
4. Antioxidants such as NAC can counteract AgNP cytotoxicity by restoring glutathione pools and suppressing ROS-mediated mitochondrial damage.
5. In vitro studies commonly show ROS elevation in both cancer and normal cells; however, in vivo, superior antioxidant, NRF2, and repair capacity in normal tissues may confer selectivity.
6. Pathways/mechanisms of action/:
-” intracellular ROS was increased...reduction in levels of glutathione (GSH)”
- Normal-cell selectivity is partly mediated by NRF2-dependent antioxidant and detoxification responses.
- AgNPs impair mitochondrial electron transport, increasing electron leak and amplifying ROS upstream of ΔΨm collapse.
-AgNPs inhibit VEGF-driven endothelial signaling and permeability (anti-angiogenic effect)
-”upregulation of proapoptotic genes (p53, p21, Bax, and caspases) and downregulation of antiapoptotic genes (Bcl-2)”
-” upregulation of AMPK and downregulation of mTOR, MMP-9, BCL-2, and α-SMA”
-”p53 is a key player...proapoptotic genes p53 and Bax were significantly increased... noticeable reduction in Bcl-2 transcript levels”
-” p53 participates directly in the intrinsic apoptosis pathway by regulating the mitochondrial outer membrane permeabilization”
- “Proapoptotic markers (BAX/BCL-XL, cleaved poly(ADP-ribose) polymerase, p53, p21, and caspases 3, 8 and 9) increased.”
-”The antiapoptotic markers, AKT and NF-kB, decreased in AgNP-treated cells.”

Chronic accumulation and long-term systemic effects remain insufficiently characterized.

Silver NanoParticles and Magnetic Fields
Summary:
1. “exposure to PMF increased the ability of AgNPs uptake”
2. 6x improvement from AgNPs alone

could glucose capping of SilverNPs work as trojan horse?

Sodium selenite might protect against toxicity of AgNPs in normal cells.

-uncoated AgNPs can degrade the gut microbiome. PVP, citrate, green-synthesized, chitosan coating, may reduce the effect.
Similar oxidative considerations may apply to selenium compounds, though mechanisms differ.
co-ingestion with food (higher pH) favors reduction and lower Ag+ levels.
-action mechanisms of AgNPs: the release of silver ions (Ag+), generation of reactive oxygen species (ROS), destruction of membrane structure.

AgNP anticancer effects come from three overlapping mechanisms:
-Nanoparticle–cell interaction (uptake, membrane effects)
-Intracellular ROS generation
-Controlled Ag⁺ release inside cancer cells

Comparison adding Citrate Capping
| Property              | Uncapped AgNPs | Citrate-capped AgNPs |
| --------------------- | -------------- | -------------------- |
| Stability             | Poor           | Excellent            |
| Free Ag⁺              | High           | Low                  |
| Normal cell toxicity  | Higher         | Lower                |
| Cancer selectivity    | Lower          | **Higher**           |
| Mechanism specificity | Crude          | **Targeted**         |
| Storage behavior      | Degrades       | Stable               |

Rank Pathway / Target Axis Cancer Cells Normal Cells Primary Effect Notes / Cancer Relevance Ref
1 Oxidative stress / ROS generation ↑ ROS (sustained) ↑ transient ROS → ↓ net ROS after adaptation Upstream cytotoxic trigger AgNP exposure commonly elevates ROS in cancer cells, initiating downstream stress-death programs (ref)
2 Thiol buffering (GSH pool) ↓ GSH (depletion) ↔ or transient ↓ with recovery Loss of redox buffering Colon cancer model: AgNPs induce oxidative cell damage through inhibition/depletion of reduced glutathione with downstream mitochondrial apoptosis (ref)
3 Mitochondrial ETC / respiration ↓ ETC efficiency; ↑ electron leak ↔ mild inhibition with recovery Bioenergetic destabilization ETC impairment amplifies ROS, precedes ΔΨm loss, and contributes to ATP collapse in cancer cells
4 Mitochondrial integrity (ΔΨm / MMP) ↓ ΔΨm ↔ largely preserved Mitochondrial dysfunction Breast cancer model: AgNP exposure dissipates mitochondrial membrane potential during cytotoxic progression (ref)
5 Intrinsic apoptosis (caspase cascade) ↑ caspase-dependent apoptosis ↔ minimal activation Programmed cell death Colon cancer model: “silver-based nanoparticles” induce apoptosis mediated through p53 (apoptosis direction shown) (ref)
6 Genotoxic stress / DNA damage ↑ DNA damage ↑ damage at high dose with efficient repair Checkpoint/death signaling Study documents AgNP-mediated DNA damage; susceptibility increases with impaired DNA repair capacity (ref)
7 ER stress / UPR (CHOP-dependent) ↑ ER stress → apoptosis ↑ adaptive UPR (no CHOP) Proteotoxic stress signaling Breast cancer cells: AgNPs induce “irremediable” ER stress leading to UPR-dependent apoptosis (ref)
8 Autophagy program ↑ autophagy (protective) ↑ adaptive autophagy Stress adaptation AgNPs induce autophagy in cancer cells; inhibiting autophagy enhances AgNP anticancer killing (ref)
9 Autophagic flux / lysosomal function ↓ flux (lysosomal defect) ↔ preserved flux Autophagic failure AgNP-induced lysosomal dysfunction drives autophagic flux defects (LC3-II accumulation) (ref)
10 NRF2 antioxidant response ↔ insufficient activation ↑ NRF2 activation Adaptive redox defense NRF2 activation in normal cells restores GSH and antioxidant enzymes, limiting toxicity
11 Stress MAPK (p38) / checkpoint signaling ↑ p38 → arrest/apoptosis ↑ transient p38 → recovery Stress signaling Jurkat T-cell model shows p38 MAPK activation with DNA damage and apoptosis (ref)
12 Angiogenesis / invasion (VEGF, NF-κB-linked) ↓ angiogenesis / ↓ invasion ↔ minimal effect Anti-angiogenic / anti-invasive AgNPs inhibit VEGF-induced permeability and invasion in tumor models (ref)


Bacteria, Effect on Bacteria: Click to Expand ⟱
Source:
Type:
Effect on Bacteria


Scientific Papers found: Click to Expand⟱
4573- AgNPs,    Bioactive silver nanoparticles derived from Carica papaya floral extract and its dual-functioning biomedical application
- in-vitro, Var, MCF-7 - NA, NA, HEK293
toxicity↓, Bacteria↓, selectivity↑,
4587- AgNPs,  Chit,    Multifunctional Silver Nanoparticles Based on Chitosan: Antibacterial, Antibiofilm, Antifungal, Antioxidant, and Wound-Healing Activities
- in-vitro, NA, NA
*Bacteria↓, *Wound Healing↑,
4581- AgNPs,    Antimicrobial, anticoagulant and antiplatelet activities of green synthesized silver nanoparticles using Selaginella (Sanjeevini) plant extract
*Bacteria↓, *AntiAg↑, *toxicity↓,
4577- AgNPs,    Characterization of Antiplatelet Properties of Silver Nanoparticles
- vitro+vivo, Stroke, NA
*AntiAg↑, *Bacteria↓, *Dose↝, *Dose↝, *Dose↝, *toxicity↝,
4576- AgNPs,    Nanosilver, Next-Generation Antithrombotic Agent
- Study, NA, NA
*AntiAg↑, *Bacteria↓,
4588- AgNPs,  Chit,    Solid-state tailored silver nanocomposites from chitosan: Synthesis, antimicrobial evaluation and molecular docking
- in-vitro, NA, NA
*Bacteria↓,
4560- AgNPs,    Exploiting antidiabetic activity of silver nanoparticles synthesized using Punica granatum leaves and anticancer potential against human liver cancer cells (HepG2)
- in-vitro, Liver, HepG2 - in-vitro, Diabetic, NA
AntiCan↑, Dose↝, *antiOx↑, *AntiDiabetic↑, *Bacteria↓,
4556- AgNPs,    Biofilm Impeding AgNPs Target Skin Carcinoma by Inducing Mitochondrial Membrane Depolarization Mediated through ROS Production
- in-vitro, Melanoma, A431
MMP↓, ROS↑, *toxicity↓, Bacteria↓,
4555- AgNPs,    Silver nanoparticles from Dendropanax morbifera Léveille inhibit cell migration, induce apoptosis, and increase generation of reactive oxygen species in A549 lung cancer cells
- in-vitro, Lung, A549 - in-vitro, Liver, HepG2
*Bacteria↓, tumCV↓, selectivity↑, ROS↑, Apoptosis↑, TumCMig↓, AntiCan↑,
5976- AgNPs,    Review on Harnessing Silver Nanoparticles for Therapeutic Innovations: A Comprehensive Review on Medical Applications, Safety, and Future Directions
- Review, Vit, NA
*Bacteria↓, AntiCan↑, *Inflam↓, *Wound Healing↑, eff↑, ChemoSen↑, EGFR↓, ROS↑, P53↑, BAX↑, Casp3↑, toxicity↝,
5975- AgNPs,  PDT,  CDT,  RF,    Recent Advances in the Application of Silver Nanoparticles for Enhancing Phototherapy Outcomes
- Review, Var, NA - Review, BPH, NA
ROS↑, EPR↓, eff↑, Bacteria↓, eff↑, eff↑, TumVol↓,
5145- AgNPs,    Silver nanoparticles induce irremediable endoplasmic reticulum stress leading to unfolded protein response dependent apoptosis in breast cancer cells
- in-vitro, BC, MCF-7 - in-vitro, BC, T47D
Bacteria↓, Apoptosis↑, ER Stress↑, UPR↑, PERK↑, IRE1↑, ATF6↑, ATF4↑, CHOP↑, Casp9↑, Casp7↑, Mcl-1↓, XIAP↓, PARP↝, selectivity↑,
4593- AgNPs,  Chit,    Chitosan-coated silver nanoparticles promoted antibacterial, antibiofilm, wound-healing of murine macrophages and antiproliferation of human breast cancer MCF 7 cells
- in-vitro, BC, MCF-7
*Bacteria↓, *Wound Healing↑, TumCG↓,
4592- AgNPs,  Chit,    Chitosan conjugated silver nanoparticles: the versatile antibacterial agents
- in-vitro, NA, NA
*Bacteria↓,
4591- AgNPs,  Chit,    Synthesis and Characterization of Multifunctional Chitosan–Silver Nanoparticles: An In-Vitro Approach for Biomedical Applications
- in-vitro, NA, NA
*Bacteria↓, *Wound Healing↑,
4590- AgNPs,  Chit,    Silver nanochitosan: a sustainable approach for enhanced antimicrobial, antioxidant, and anticancer applications
- in-vitro, NA, NA
*Bacteria↓, *Wound Healing↑,
4589- AgNPs,  Chit,    Synthesis and Characterization of Chitosan–Silver Nanocomposite Film: Antibacterial and Cytotoxicity Study
- in-vitro, NA, NA
*Bacteria↓,
4411- AgNPs,    Eco-friendly synthesis of silver nanoparticles using Anemone coronaria bulb extract and their potent anticancer and antibacterial activities
- in-vitro, Lung, A549 - in-vitro, PC, MIA PaCa-2 - in-vitro, Pca, PC3 - in-vitro, Nor, HEK293
AntiCan↑, selectivity↑, Apoptosis↑, TumCCA↑, Bacteria↓, tumCV↓, selectivity↑, Apoptosis↑, TumCCA↑,
4412- AgNPs,    Biosynthesis and characterization of silver nanoparticles from Asplenium dalhousiae and their potential biological properties
- in-vitro, CRC, HCT116 - in-vitro, Melanoma, A2780S
Bacteria↓, antiOx↑, AntiCan↑, eff↑,
4550- AgNPs,    The Effect of Charge at the Surface of Silver Nanoparticles on Antimicrobial Activity against Gram-Positive and Gram-Negative Bacteria: A Preliminary Study
- Study, Nor, NA
*Bacteria↓,
4544- AgNPs,  VitC,    Current Research on Silver Nanoparticles: Synthesis, Characterization, and Applications
- Review, Nor, NA
*Bacteria↓, *eff↑,
4543- AgNPs,    Biogenic synthesis of silver nanoparticles using Zaleya pentandra and investigation of their biological activities
- Study, Nor, NA
*Bacteria↓,
4542- AgNPs,    Silver Nanoparticles (AgNPs): Comprehensive Insights into Bio/Synthesis, Key Influencing Factors, Multifaceted Applications, and Toxicity─A 2024 Update
- Review, NA, NA
AntiCan↑, DNAdam↑, ATP↓, Apoptosis↑, ROS↓, TumCCA↑, *Bacteria↓, *BMD↑,
4540- AgNPs,  VitC,    Silver nanoparticles from ascorbic acid: Biosynthesis, characterization, in vitro safety profile, antimicrobial activity and phytotoxicity
- in-vitro, Nor, NA
*Bacteria↓, *selectivity↑,
4549- AgNPs,    Silver nanoparticles: Synthesis, medical applications and biosafety
- Review, Var, NA - Review, Diabetic, NA
ROS↑, eff↑, other↝, DNAdam↑, EPR↑, eff↑, eff↑, TumMeta↓, angioG↓, *Bacteria↓, *eff↑, *AntiViral↑, *AntiFungal↑, eff↑, eff↑, TumCP↓, tumCV↓, P53↝, HIF-1↓, TumCCA↑, lipid-P↑, ATP↓, Cyt‑c↑, MMPs↓, PI3K↓, Akt↓, *Wound Healing↑, *Inflam↓, *Bone Healing↑, *glucose↓, *AntiDiabetic↑, *BBB↑,
4430- AgNPs,    Evaluation of the Genotoxic and Oxidative Damage Potential of Silver Nanoparticles in Human NCM460 and HCT116 Cells
- in-vitro, Colon, HCT116 - in-vitro, Nor, NCM460
*Bacteria↓, ROS↑, p‑p38↑, BAX↑, Bcl-2↓, BAX↑, P21↑, TumCD↑, toxicity↝,
2208- AgNPs,    Sepsis diagnosis and treatment using nanomaterials
- Review, NA, NA
Bacteria↓,
887- AgNPs,    Antibacterial potential of silver nanoparticles against isolated urinary tract infectious bacterial pathogens
- in-vitro, UTI, NA
Bacteria↓,
888- AgNPs,    Bacterial_Strains_Isolated_from_Catheterized_Urinary_Tract_Infection_Cases">Antibacterial Effects of Silver Nanoparticles on the Bacterial Strains Isolated from Catheterized Urinary Tract Infection Cases
- in-vivo, UTI, NA
Bacteria↓,
4379- AgNPs,    Exposure to silver nanoparticles induces size- and dose-dependent oxidative stress and cytotoxicity in human colon carcinoma cells
- in-vitro, CRC, LoVo
eff↑, TumCD↑, ROS↑, Bacteria↓,
4359- AgNPs,    Antimicrobial Silver Nanoparticles for Wound Healing Application: Progress and Future Trends
- NA, Wounds, NA
*Bacteria↓, *eff↑, *other↝, *toxicity↓,
4365- AgNPs,    Biomedical Applications of Silver Nanoparticles: An Up-to-Date Overview
- Review, Var, NA
ROS↑, *toxicity↓, *Bacteria↓, *Inf↓, *Diff↑, *eff↑, RadioS↑, selectivity↑,
4607- SeNPs,  AgNPs,    A Review on synthesis and their antibacterial activity of Silver and Selenium nanoparticles against biofilm forming Staphylococcus aureus
- Review, NA, NA
*Bacteria↓, *eff↑, ROS↑, *Dose↝, *eff↑, toxicity↝, *Sepsis↓, *other↝, eff↑,

Showing Research Papers: 1 to 33 of 33

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 33

Pathway results for Effect on Cancer / Diseased Cells:


Redox & Oxidative Stress ⓘ

antiOx↑, 1,   lipid-P↑, 1,   ROS↓, 1,   ROS↑, 9,  

Mitochondria & Bioenergetics ⓘ

ATP↓, 2,   MMP↓, 1,   XIAP↓, 1,  

Cell Death ⓘ

Akt↓, 1,   Apoptosis↑, 5,   BAX↑, 3,   Bcl-2↓, 1,   Casp3↑, 1,   Casp7↑, 1,   Casp9↑, 1,   Cyt‑c↑, 1,   Mcl-1↓, 1,   p‑p38↑, 1,   TumCD↑, 2,  

Transcription & Epigenetics ⓘ

other↝, 1,   tumCV↓, 3,  

Protein Folding & ER Stress ⓘ

ATF6↑, 1,   CHOP↑, 1,   ER Stress↑, 1,   IRE1↑, 1,   PERK↑, 1,   UPR↑, 1,  

DNA Damage & Repair ⓘ

DNAdam↑, 2,   P53↑, 1,   P53↝, 1,   PARP↝, 1,  

Cell Cycle & Senescence ⓘ

P21↑, 1,   TumCCA↑, 4,  

Proliferation, Differentiation & Cell State ⓘ

PI3K↓, 1,   TumCG↓, 1,  

Migration ⓘ

MMPs↓, 1,   TumCMig↓, 1,   TumCP↓, 1,   TumMeta↓, 1,  

Angiogenesis & Vasculature ⓘ

angioG↓, 1,   ATF4↑, 1,   EGFR↓, 1,   EPR↓, 1,   EPR↑, 1,   HIF-1↓, 1,  

Drug Metabolism & Resistance ⓘ

ChemoSen↑, 1,   Dose↝, 1,   eff↑, 12,   RadioS↑, 1,   selectivity↑, 6,  

Clinical Biomarkers ⓘ

EGFR↓, 1,  

Functional Outcomes ⓘ

AntiCan↑, 6,   toxicity↓, 1,   toxicity↝, 3,   TumVol↓, 1,  

Infection & Microbiome ⓘ

Bacteria↓, 10,  
Total Targets: 55

Pathway results for Effect on Normal Cells:


Redox & Oxidative Stress ⓘ

antiOx↑, 1,  

Core Metabolism/Glycolysis ⓘ

glucose↓, 1,  

Transcription & Epigenetics ⓘ

other↝, 2,  

Proliferation, Differentiation & Cell State ⓘ

Diff↑, 1,  

Migration ⓘ

AntiAg↑, 3,  

Barriers & Transport ⓘ

BBB↑, 1,  

Immune & Inflammatory Signaling ⓘ

Inflam↓, 2,  

Drug Metabolism & Resistance ⓘ

Dose↝, 4,   eff↑, 6,   selectivity↑, 1,  

Clinical Biomarkers ⓘ

BMD↑, 1,  

Functional Outcomes ⓘ

AntiDiabetic↑, 2,   Bone Healing↑, 1,   toxicity↓, 4,   toxicity↝, 1,   Wound Healing↑, 6,  

Infection & Microbiome ⓘ

AntiFungal↑, 1,   AntiViral↑, 1,   Bacteria↓, 23,   Inf↓, 1,   Sepsis↓, 1,  
Total Targets: 21

Scientific Paper Hit Count for: Bacteria, Effect on Bacteria
33 Silver-NanoParticles
7 chitosan
2 Vitamin C (Ascorbic Acid)
1 Photodynamic Therapy
1 chemodynamic therapy
1 EMF
1 Selenium NanoParticles
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#:153  Target#:591  State#:%  Dir#:1
  wNotes=0  sortOrder:rid,rpid

 

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