Silver-NanoParticles / P53 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)

P53, P53-Guardian of the Genome: Click to Expand ⟱

Source: TCGA

Type: Proapototic

TP53 is the most commonly mutated gene in human cancer. TP53 is a gene that encodes for the p53 tumor suppressor protein ; TP73 (Chr.1p36.33) and TP63 (Chr.3q28) genes that encode transcription factors p73 and p63, respectively, are TP53 homologous structures.
p53 is a crucial tumor suppressor protein that plays a significant role in regulating the cell cycle, maintaining genomic stability, and preventing tumor formation. It is often referred to as the "guardian of the genome" due to its role in protecting cells from DNA damage and stress.
TP53 gene, which encodes the p53 protein, is one of the most frequently mutated genes in human cancers.
Overexpression of MDM2, an inhibitor of p53, can lead to decreased p53 activity even in the presence of wild-type p53.
In some cancers, particularly those with mutant p53, there may be an overexpression of the p53 protein.
Cancers with overexpression: Breast, lung, colorectal, overian, head and neck, Esophageal, bladder, pancreatic, and liver.

Scientific Papers found: Click to Expand⟱

5976-

AgNPs,

Review on Harnessing Silver Nanoparticles for Therapeutic Innovations: A Comprehensive Review on Medical Applications, Safety, and Future Directions

Review,

Vit,

*Bacteria↓, AntiCan↑, *Inflam↓, *Wound Healing↑, eff↑, ChemoSen↑, EGFR↓, ROS↑, P53↑, BAX↑, Casp3↑, toxicity↝,

5238-

AgNPs,

β-Sitosterol-assisted silver nanoparticles activates Nrf2 and triggers mitochondrial apoptosis via oxidative stress in human hepatocellular cancer cell line

in-vitro,

HCC,

HepG2

TumCP↓, ROS↑, NRF2↑, BAX↑, P53↑, Cyt‑c↑, Casp9↑, Casp3↑, Bcl-2↓,

4416-

AgNPs,

Efficacy of curcumin-synthesized silver nanoparticles on MCF-7 breast cancer cells

in-vitro,

BC,

MCF-7

TumCMig↓, Apoptosis↑, BAX↑, P53↑, Bcl-2↓,

4413-

AgNPs,

Anzaroot,

Green synthesis of silver nanoparticles from plant Astragalus fasciculifolius Bioss and evaluating cytotoxic effects on MCF7 human breast cancer cells

in-vitro,

BC,

MCF-7

12.35 μg/mL

The IC50 value for root extract-mediated SNPs was found to be 21.73 μg/mL

chemoP↑, TumCG↓, eff↑, CellMemb↑, selectivity↑, ROS↑, P53↑,

4406-

AgNPs,

Silver nanoparticles achieve cytotoxicity against breast cancer by regulating long-chain noncoding RNA XLOC_006390-mediated pathway

in-vitro,

BC,

MCF-7

63.1 ± 8.3 nm

tissues from 64 patients

in-vitro,

BC,

T47D

in-vitro,

BC,

MDA-MB-231

TumCD↑, other↓, P53↑, TumCCA↑, Apoptosis↑, ChemoSen↑, tumCV↓, γH2AX↑, SOX4↓,

2288-

AgNPs,

Silver Nanoparticle-Mediated Cellular Responses in Various Cell Lines: An in Vitro Model

Review,

Var,

*ROS↑, Akt↓, ERK↓, DNAdam↑, Ca+2↑, ROS↑, MMP↓, Cyt‑c↑, TumCCA↑, DNAdam↑, Apoptosis↑, P53↑, p‑ERK↑, ER Stress↑, cl‑ATF6↑, GRP78/BiP↑, CHOP↑, UPR↑,

393-

AgNPs,

Green synthesized plant-based silver nanoparticles: therapeutic prospective for anticancer and antiviral activity

in-vitro,

NA,

HCT116

mtDam↑, ROS↑, TumCCA↑, Casp3↑, BAX↑, Bcl-2↓, P53↑,

396-

AgNPs,

Systemic Evaluation of Mechanism of Cytotoxicity in Human Colon Cancer HCT-116 Cells of Silver Nanoparticles Synthesized Using Marine Algae Ulva lactuca Extract

in-vitro,

Colon,

HCT116

P53↑, BAX↑, P21↑, Bcl-2↓,

397-

AgNPs,

GEM,

Silver nanoparticles enhance the apoptotic potential of gemcitabine in human ovarian cancer cells: combination therapy for effective cancer treatment

in-vitro,

Ovarian,

A2780S

50 nM GEM, 50 nM AgNPs

6nm

P53↑, P21↑, BAX↑, Bak↑, Cyt‑c↑, Casp3↑, Casp9↑, Bcl-2↓, ROS↑, MMP↓,

399-

AgNPs,

SIL,

Cytotoxic potentials of silibinin assisted silver nanoparticles on human colorectal HT-29 cancer cells

in-vitro,

CRC,

HT-29

8 ng/mL

P53↑,

400-

AgNPs,

MF,

Polyvinyl Alcohol Capped Silver Nanostructures for Fortified Apoptotic Potential Against Human Laryngeal Carcinoma Cells Hep-2 Using Extremely-Low Frequency Electromagnetic Field

in-vitro,

Laryn,

HEp2

50mT/30mins

3.29 0.4 mol/mL

6x improvement when LEMF added (50mT/15mins)

TumCP↓, Casp3↑, P53↑, Beclin-1↑, TumAuto↑, GSR↑, ROS↑, MDA↑, ROS↑, SIRT1↑, Ca+2↑, Endon↑, DNAdam↑, Apoptosis↑, NF-kB↓,

402-

AgNPs,

MF,

Anticancer and antibacterial potentials induced post short-term exposure to electromagnetic field and silver nanoparticles and related pathological and genetic alterations: in vitro study

in-vitro,

BC,

MCF-7

10 µM/ml+EMF(1mT)

4.15 μM/ml for AgNPs

P53↑, iNOS↑, NF-kB↑, Bcl-2↓, miR-125b↓, ROS↑, SOD↑,

334-

AgNPs,

Silver-Based Nanoparticles Induce Apoptosis in Human Colon Cancer Cells Mediated Through P53

in-vitro,

Colon,

HCT116

Bax:Bcl2↑, P53↑, P21↑, Casp3↑, Casp8↑, Casp9↑, Akt↓, NF-kB↓, DNAdam↑, TumCCA↑,

343-

AgNPs,

Silver nanoparticles of different sizes induce a mixed type of programmed cell death in human pancreatic ductal adenocarcinoma

in-vitro,

PC,

PANC1

 3.19 or 1.67 ug/mL

BAX↑, Bcl-2↓, P53↑, TumAuto↑,

348-

AgNPs,

Induction of p53 mediated mitochondrial apoptosis and cell cycle arrest in human breast cancer cells by plant mediated synthesis of silver nanoparticles from Bergenia ligulata (Whole plant)

in-vitro,

BC,

MCF-7

Apoptosis↑, ROS↑, MMP↓, P53↑, BAX↑, cl‑Casp3↑,

350-

AgNPs,

Cytotoxic and Apoptotic Effects of Green Synthesized Silver Nanoparticles via Reactive Oxygen Species-Mediated Mitochondrial Pathway in Human Breast Cancer Cells

in-vitro,

BC,

MCF-7

 40ug/mL

ROS↑, MMP↓, P53↑, BAX↑, Casp3↑, Casp9↑, Bcl-2↓,

388-

AgNPs,

Apoptotic efficacy of multifaceted biosynthesized silver nanoparticles on human adenocarcinoma cells

in-vitro,

BC,

MCF-7

 5 and 10 µg/mL

ROS↑, Casp3↑, BAX↑, P53↑, Casp↑, Cyt‑c↑, MMP↓, DNAdam↑, Bcl-2↓, BAX↑,

324-

AgNPs,

CPT,

Silver Nanoparticles Potentiates Cytotoxicity and Apoptotic Potential of Camptothecin in Human Cervical Cancer Cells

in-vitro,

Cerv,

HeLa

ROS↑, Casp3↑, Casp9↑, Casp6↑, GSH↓, SOD↓, GPx↓, MMP↓, P53↑, P21↑, Cyt‑c↑, BID↑, BAX↑, Bcl-2↓, Bcl-xL↓, Akt↓, Raf↓, ERK↓, MAP2K1/MEK1↓, JNK↑, p38↑,

382-

AgNPs,

Investigation the apoptotic effect of silver nanoparticles (Ag-NPs) on MDA-MB 231 breast cancer epithelial cells via signaling pathways

in-vitro,

BC,

MDA-MB-231

Apoptosis↑, BAX↑, Bcl-2↓, P53↑, PTEN↑, hTERT/TERT↓, p‑ERK↓, cycD1/CCND1↓,

384-

AgNPs,

Dual functions of silver nanoparticles in F9 teratocarcinoma stem cells, a suitable model for evaluating cytotoxicity- and differentiation-mediated cancer therapy

in-vitro,

Testi,

LDH↓, ROS↑, mtDam↑, DNAdam↑, P53↑, P21↑, BAX↑, Casp3↑, Bcl-2↓, Casp9↑, Nanog↓, OCT4↓,

386-

AgNPs,

Tam,

Synergistic anticancer effects and reduced genotoxicity of silver nanoparticles and tamoxifen in breast cancer cells

in-vitro,

BC,

MCF-7

35uM(AgNP)+20uM(Tam)

in-vitro,

BC,

MDA-MB-231

P53↑, BAX↑, Bcl-2↓, Casp3↑, DNAdam↑, TumCCA↑,

387-

AgNPs,

Silver nanoparticles induce mitochondria-dependent apoptosis and late non-canonical autophagy in HT-29 colon cancer cells

in-vitro,

Colon,

HT-29

33.45 μg/mL

Cyt‑c↑, P53↑, BAX↑, Casp3↑, Casp9↑, Casp12↑, Beclin-1↑, CHOP↑, LC3s↑, XBP-1↑,

359-

AgNPs,

Anti-cancer & anti-metastasis properties of bioorganic-capped silver nanoparticles fabricated from Juniperus chinensis extract against lung cancer cells

in-vitro,

Lung,

A549

 9.87ug/ml

in-vitro,

Nor,

HEK293

111.3ug/ml

normal cells

Casp3↑, Casp9↑, P53↑, ROS↑, MMP2↓, MMP9↓, TumCCA↑, *toxicity↓, TumCMig↓, TumCI↓,

356-

AgNPs,

MF,

Anticancer and antibacterial potentials induced post short-term exposure to electromagnetic field and silver nanoparticles and related pathological and genetic alterations: in vitro study

in-vitro,

BC,

MCF-7

 10 µM/ml + 1mT,2hr

 likely 50-60Hz and 1mT

in-vitro,

Bladder,

HTB-22

4uM/ml

 calculated IC50 value of AgNPs was 4.15 ± 0.20 μM/ml

Apoptosis↑, P53↑, iNOS↑, NF-kB↑, Bcl-2↓, ROS↑, SOD↑, TumCCA↑, eff↑, Catalase↑, other↑,

854-

Gra,

AgNPs,

Green Synthesis of Silver Nanoparticles Using Annona muricata Extract as an Inducer of Apoptosis in Cancer Cells and Inhibitor for NLRP3 Inflammasome via Enhanced Autophagy

vitro+vivo,

AML,

THP1

17.34 µg/mL

in-vitro,

AML,

AMJ13

vitro+vivo,

lymphoma,

HBL

TumCP↓, TumAuto↑, IL1↓, NLRP3↓, Apoptosis↑, mtDam↑, P53↑, LDH↓,

323-

Sal,

AgNPs,

Combination of salinomycin and silver nanoparticles enhances apoptosis and autophagy in human ovarian cancer cells: an effective anticancer therapy

in-vitro,

BC,

MDA-MB-231

 Sal (3 µM), AgNPs (4 µg/mL)

 IC25 values of both Sal and AgNPs (3.0 µM and 4 µg/mL)

in-vitro,

Ovarian,

A2780S

TumCD↑, LDH↓, MDA↑, SOD↓, ROS↑, GSH↓, Catalase↓, MMP↓, P53↑, P21↑, BAX↑, Bcl-2↓, Casp3↑, Casp9↑, Apoptosis↑, TumAuto↑,

Showing Research Papers: 1 to 26 of 26

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 26

Pathway results for Effect on Cancer / Diseased Cells:

Pathway results for Effect on Normal Cells:

Redox & Oxidative Stress ⓘ

ROS↑, 1,

Immune & Inflammatory Signaling ⓘ

Inflam↓, 1,

Functional Outcomes ⓘ

toxicity↓, 1, Wound Healing↑, 1,

Infection & Microbiome ⓘ

Bacteria↓, 1,
Total Targets: 5

Scientific Paper Hit Count for: P53, P53-Guardian of the Genome

26 Silver-NanoParticles
3 Magnetic Fields
1 Anzaroot, Astragalus fasciculifolius Bioss
1 Gemcitabine (Gemzar)
1 Silymarin (Milk Thistle) silibinin
1 Camptothecin
1 tamoxifen
1 Graviola
1 salinomycin

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#:236  State#:%  Dir#:2
  wNotes=0  sortOrder:rid,rpid

Silver-NanoParticles / P53 Cancer Research Results

Pathway results for Effect on Cancer / Diseased Cells:

Redox & Oxidative Stress ⓘ

Mitochondria & Bioenergetics ⓘ

Core Metabolism/Glycolysis ⓘ

Cell Death ⓘ

Transcription & Epigenetics ⓘ

Protein Folding & ER Stress ⓘ

Autophagy & Lysosomes ⓘ

DNA Damage & Repair ⓘ

Cell Cycle & Senescence ⓘ

Proliferation, Differentiation & Cell State ⓘ

Migration ⓘ

Angiogenesis & Vasculature ⓘ

Barriers & Transport ⓘ

Immune & Inflammatory Signaling ⓘ

Protein Aggregation ⓘ

Drug Metabolism & Resistance ⓘ

Clinical Biomarkers ⓘ

Functional Outcomes ⓘ

Pathway results for Effect on Normal Cells:

Redox & Oxidative Stress ⓘ

Immune & Inflammatory Signaling ⓘ

Functional Outcomes ⓘ

Infection & Microbiome ⓘ

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