Silver-NanoParticles / selectivity 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)

selectivity, selectivity: Click to Expand ⟱

Source:

Type:

The selectivity of cancer products (such as chemotherapeutic agents, targeted therapies, immunotherapies, and novel cancer drugs) refers to their ability to affect cancer cells preferentially over normal, healthy cells. High selectivity is important because it can lead to better patient outcomes by reducing side effects and minimizing damage to normal tissues.

Achieving high selectivity in cancer treatment is crucial for improving patient outcomes. It relies on pinpointing molecular differences between cancerous and normal cells, designing drugs or delivery systems that exploit these differences, and overcoming intrinsic challenges like tumor heterogeneity and resistance

Factors that affect selectivity:
1. Ability of Cancer cells to preferentially absorb a product/drug
-EPR-enhanced permeability and retention of cancer cells
-nanoparticle formations/carriers may target cancer cells over normal cells
-Liposomal formations. Also negatively/positively charged affects absorbtion

2. Product/drug effect may be different for normal vs cancer cells
- hypoxia
- transition metal content levels (iron/copper) change probability of fenton reaction.
- pH levels
- antiOxidant levels and defense levels

3. Bio-availability

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

21.25 ± 1.14 µg/mL

NA,

HEK293

169.96 ± 2.3 µg/mL

toxicity↓, Bacteria↓, selectivity↑,

4584-

AgNPs,

Silver Nanoparticles Synthesized Using Carica papaya Leaf Extract (AgNPs-PLE) Causes Cell Cycle Arrest and Apoptosis in Human Prostate (DU145) Cancer Cells

in-vitro,

Pca,

DU145

selectivity↑, ROS↑, BAX↑, cl‑Casp3↑, p‑PARP↑, TumCCA↑, cycD1/CCND1↓, p27↑, P21↑, AntiCan↑,

4561-

AgNPs,

VitC,

Cellular Effects Nanosilver on Cancer and Non-cancer Cells: Potential Environmental and Human Health Impacts

in-vitro,

CRC,

HCT116

in-vitro,

Nor,

HEK293

NRF2↑, TumCCA↑, ROS↑, selectivity↑, *AntiViral↑, *toxicity↝, ETC↓, MMP↓, DNAdam↑, Apoptosis↑, lipid-P↑, other↝, UPR↑, *GRP78/BiP↑, *p‑PERK↑, *cl‑eIF2α↑, *CHOP↑, *JNK↑, Hif1a↓, AntiCan↑, *toxicity↓, eff↑,

4558-

AgNPs,

Role of Oxidative and Nitro-Oxidative Damage in Silver Nanoparticles Cytotoxic Effect against Human Pancreatic Ductal Adenocarcinoma Cells

in-vitro,

PC,

PANC1

3.19 ug/mL

ROS↑, selectivity↑, NO↑, SOD↓, GPx4↓, Catalase↓, TumCCA↑, MMP↓,

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↑,

5977-

AgNPs,

CDT,

Silver Nitroprusside as an Efficient Chemodynamic Therapeutic Agent and a Peroxynitrite nanogenerator for Targeted Cancer Therapy

in-vivo,

Ovarian,

A2780S

mouse

NA,

Ovarian,

SKOV3

Fenton↑, ROS↑, eff↑, angioG↓, p‑Akt↓, EPR↑, selectivity↑, selectivity↑, eff↑, Cyt‑c↑, HO-1↑,

5236-

AgNPs,

Adaptive regulations of Nrf2 alleviates silver nanoparticles-induced oxidative stress-related liver cells injury

in-vitro,

Liver,

HepG2

in-vitro,

Nor,

L02

tumCV↓, ROS↑, *ROS↑, DNAdam↑, *DNAdam↑, eff↓, selectivity↑,

5147-

AgNPs,

Size dependent anti-invasiveness of silver nanoparticles in lung cancer cells

in-vitro,

Lung,

A549

TumCMig↓, TumCI↓, ROS↑, p‑NF-kB↑, selectivity↑, eff↝,

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↑,

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↑,

4422-

AgNPs,

Bioengineering of Piper longum L. extract mediated silver nanoparticles and their potential biomedical applications

in-vitro,

Cerv,

HeLa

AntiCan↑, selectivity↑,

4421-

AgNPs,

Effect of Biologically Synthesized Silver Nanoparticles on Human Cancer Cells

in-vitro,

Cerv,

selectivity↑, eff↝, other↝,

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↑,

4410-

AgNPs,

Green-synthesized silver nanoparticles: a sustainable nanoplatform for targeted colon cancer therapy

Review,

Colon,

AntiCan↑, ROS↑, mtDam↑, tumCV↓, selectivity↑,

4403-

AgNPs,

Silver Nanoparticles Decorated UiO-66-NH2 Metal-Organic Framework for Combination Therapy in Cancer Treatment

in-vitro,

GBM,

U251

in-vitro,

GBM,

U87MG

in-vitro,

GBM,

GL26

in-vitro,

Cerv,

HeLa

in-vitro,

CRC,

RKO

AntiCan↑, eff↑, EPR↑, selectivity↑, ROS↑, Casp↑, Apoptosis↑, DNAdam↑, tumCV↓, eff↑,

4402-

AgNPs,

Enhancement of Triple-Negative Breast Cancer-Specific Induction of Cell Death by Silver Nanoparticles by Combined Treatment with Proteotoxic Stress Response Inhibitors

in-vitro,

BC,

BT549

in-vitro,

BC,

MDA-MB-231

in-vitro,

Nor,

MCF10

TumCD↑, selectivity↑, *toxicity↝, Dose↝, OS↑,

4400-

AgNPs,

Rad,

Differential cytotoxic and radiosensitizing effects of silver nanoparticles on triple-negative breast cancer and non-triple-negative breast cells

in-vitro,

BC,

MCF-7

in-vitro,

Nor,

MCF10

in-vitro,

BC,

MDA-MB-231

in-vitro,

BC,

BT549

in-vivo,

BC,

MDA-MB-231

right hind flanks of the mice

ROS↑, DNAdam↑, selectivity↑, TumCG↓, RadioS↑, Dose↝, selectivity↑, other↝, eff↓, eff↑, γH2AX↑, Dose↓, eff↑,

4397-

AgNPs,

Synthesis and Characterization of Silver Nanoparticles from Rhizophora apiculata and Studies on Their Wound Healing, Antioxidant, Anti-Inflammatory, and Cytotoxic Activity

NA,

Wounds,

 99 nm, with a zeta potential of −6 mV

selectivity↑, tumCV↓, antiOx↑, Inflam↓,

4541-

AgNPs,

RosA,

Eco-friendly synthesis of silver nanoparticles: multifaceted antioxidant, antidiabetic, anticancer, and antimicrobial activities

in-vitro,

Nor,

WI38

in-vitro,

BC,

MDA-MB-231

in-vitro,

PC,

PANC1

*antiOx↑, TumCD↓, selectivity↑,

4540-

AgNPs,

VitC,

Silver nanoparticles from ascorbic acid: Biosynthesis, characterization, in vitro safety profile, antimicrobial activity and phytotoxicity

in-vitro,

Nor,

*Bacteria↓, *selectivity↑,

4435-

AgNPs,

Gluc,

Glucose-Functionalized Silver Nanoparticles as a Potential New Therapy Agent Targeting Hormone-Resistant Prostate Cancer cells

in-vitro,

Pca,

PC3

average size of 61nm

911ug/mL

in-vitro,

Pca,

LNCaP

in-vitro,

Pca,

DU145

1579ug/mL

selectivity↑, ROS↑, mtDam↑, TumCCA↑, TumCP↓, Apoptosis↑, MMP↓,

4433-

AgNPs,

Advancements in metal and metal oxide nanoparticles for targeted cancer therapy and imaging: Mechanisms, applications, and safety concerns

in-vitro,

Liver,

HepG2

in-vitro,

Nor,

L02

selectivity↑, selectivity↓, mt-ROS↑,

4431-

AgNPs,

doxoR,

Oxidative Stress-Induced Silver Nano-Carriers for Chemotherapy

in-vitro,

BC,

4T1

PA-AgNPs have an average hydrodynamic diameter of 130 nm

in-vivo,

BC,

4T1

in-vitro,

Nor,

3T3

AntiCan↑, ROS↑, TumVol↓, EPR↑, selectivity↑, ChemoSen↑,

4429-

AgNPs,

Comparative proteomic analysis reveals the different hepatotoxic mechanisms of human hepatocytes exposed to silver nanoparticles

in-vitro,

Liver,

HepG2

*toxicity↝, selectivity↑, mt-ROS↑,

4388-

AgNPs,

Differential Cytotoxic Potential of Silver Nanoparticles in Human Ovarian Cancer Cells and Ovarian Cancer Stem Cells

in-vitro,

Cerv,

47.5 nm

tumCV↓, CSCs↓, selectivity↑, Apoptosis↑, ROS↑, LDH↓, Casp3↑, BAX↑, Bak↑, cMyc↑, MMP↓,

4363-

AgNPs,

Immunomodulatory properties of silver nanoparticles contribute to anticancer strategy for murine fibrosarcoma

in-vivo,

fibroS,

particles was approximately 10 nm

LACA mice

TumVol↓, TNF-α↓, IL6↓, IL1β↓, *toxicity↝, TumCG↓, selectivity↑, selectivity↑, Weight↑, ROS↑, NO↑,

4364-

AgNPs,

Selective cytotoxicity of green synthesized silver nanoparticles against the MCF-7 tumor cell line and their enhanced antioxidant and antimicrobial properties

in-vitro,

BC,

MCF-7

31.4 nm with a Zeta potential of −33.8 mV,

TumCD↑, selectivity↑, *antiOx↑, *Inflam↓, AntiTum↑, ROS↑,

4365-

AgNPs,

Biomedical Applications of Silver Nanoparticles: An Up-to-Date Overview

Review,

Var,

ROS↑, *toxicity↓, *Bacteria↓, *Inf↓, *Diff↑, *eff↑, RadioS↑, selectivity↑,

4371-

AgNPs,

Effects of Green Silver Nanoparticles on Apoptosis and Oxidative Stress in Normal and Cancerous Human Hepatic Cells in vitro

in-vitro,

Liver,

HUH7

20−50 nm

eco-friendly approach silver nanoparticles (AgNPs) using root extracts of Beta vulgaris L.

ROS↑, selectivity↑, DNAdam↑, Apoptosis↑, GSH↓, lipid-P↑, MMP↓, DNAdam↑,

4376-

AgNPs,

Interaction of multi-functional silver nanoparticles with living cells

in-vitro,

Nor,

L929

in-vitro,

Lung,

A549

eff↑, selectivity↑,

375-

AgNPs,

ALA,

Alpha-Lipoic Acid Prevents Side Effects of Therapeutic Nanosilver without Compromising Cytotoxicity in Experimental Pancreatic Cancer

in-vitro,

PC,

Bxpc-3

 we used α-lipoic acid concentrations of 0.5 and 1 mM

in-vitro,

PC,

PANC1

in-vitro,

PC,

MIA PaCa-2

in-vivo,

NA,

dropping 200 µL or 400 µL of a 14 ppm AgNP solution, 200 µL or 400 µL of a 0.5 mM α-lipoic acid solution, or both solutions together on the chorioallantoic membrane (CAM)

chick embryos

mtDam↑, ROS↑, *toxicity↓, Dose∅, selectivity↑,

2833-

FIS,

AgNPs,

Glucose-capped fisetin silver nanoparticles induced cytotoxicity and ferroptosis in breast cancer cells: A molecular perspective

in-vitro,

BC,

MDA-MB-231

11.275 ± 0.197 μg/mL

MMP↓, ROS↑, NRF2↑, NOX↑, selectivity↑,

1904-

GoldNP,

AgNPs,

Unveiling the Potential of Innovative Gold(I) and Silver(I) Selenourea Complexes as Anticancer Agents Targeting TrxR and Cellular Redox Homeostasis

in-vitro,

Lung,

H157

in-vitro,

BC,

MCF-7

in-vitro,

Colon,

HCT15

in-vitro,

Melanoma,

A375

TrxR↓, selectivity↑, eff↑, eff↝, ROS↑, MMP↓, Apoptosis↑, 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:

Infection & Microbiome ⓘ

Bacteria↓, 3,
Total Targets: 85

Pathway results for Effect on Normal Cells:

Redox & Oxidative Stress ⓘ

antiOx↑, 2, ROS↑, 1,

Cell Death ⓘ

JNK↑, 1,

Protein Folding & ER Stress ⓘ

CHOP↑, 1, cl‑eIF2α↑, 1, GRP78/BiP↑, 1, p‑PERK↑, 1,

DNA Damage & Repair ⓘ

DNAdam↑, 1,

Proliferation, Differentiation & Cell State ⓘ

Diff↑, 1,

Immune & Inflammatory Signaling ⓘ

Inflam↓, 1,

Drug Metabolism & Resistance ⓘ

eff↑, 1, selectivity↑, 1,

Functional Outcomes ⓘ

toxicity↓, 3, toxicity↝, 4,

Infection & Microbiome ⓘ

AntiViral↑, 1, Bacteria↓, 3, Inf↓, 1,
Total Targets: 17

Scientific Paper Hit Count for: selectivity, selectivity

33 Silver-NanoParticles
2 Vitamin C (Ascorbic Acid)
1 chemodynamic therapy
1 Anzaroot, Astragalus fasciculifolius Bioss
1 Radiotherapy/Radiation
1 Rosmarinic acid
1 Glucose
1 doxorubicin
1 Alpha-Lipoic-Acid
1 Fisetin
1 Gold 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#:1110  State#:%  Dir#:2
  wNotes=0  sortOrder:rid,rpid

Silver-NanoParticles / selectivity 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 ⓘ

DNA Damage & Repair ⓘ

Cell Cycle & Senescence ⓘ

Proliferation, Differentiation & Cell State ⓘ

Migration ⓘ

Angiogenesis & Vasculature ⓘ

Barriers & Transport ⓘ

Immune & Inflammatory Signaling ⓘ

Cellular Microenvironment ⓘ

Drug Metabolism & Resistance ⓘ

Clinical Biomarkers ⓘ

Functional Outcomes ⓘ

Infection & Microbiome ⓘ

Pathway results for Effect on Normal Cells:

Redox & Oxidative Stress ⓘ

Cell Death ⓘ

Protein Folding & ER Stress ⓘ

DNA Damage & Repair ⓘ

Proliferation, Differentiation & Cell State ⓘ

Immune & Inflammatory Signaling ⓘ

Drug Metabolism & Resistance ⓘ

Functional Outcomes ⓘ

Infection & Microbiome ⓘ

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