salinomycin / pH Cancer Research Results

Sal, salinomycin: Click to Expand ⟱

Features:

Salinomycin is a polyether ionophore antibiotic that is produced by the bacterium Streptomyces albus. It was first isolated in 1979 and has been found to have a range of biological activities, including antibacterial, antifungal, and anticancer properties.
It has been shown to induce apoptosis (programmed cell death) in a range of cancer cell lines, including breast, lung, and colon cancer cells. Salinomycin has also been found to inhibit the growth of cancer stem cells.
Salinomycin, a widely used antibiotic in poultry farming

Actions:
-Strong activity against cancer stem cells
-Disrupts mitochondrial ion gradients → ROS
-Non-thiol, non-NRF2 dominant

Key pathways
-Mitochondrial K⁺ dysregulation
-ROS-mediated apoptosis
-Wnt/β-catenin inhibition

Chemo relevance
-Generally compatible or synergistic
-Not a redox buffer

Rank	Pathway / Target Axis	Direction	Primary Effect	Notes / Cancer Relevance	Ref
1	K+ ionophore activity / ionic homeostasis	↑ K+ transport (ionophore) / ↓ intracellular K+ homeostasis	Electrochemical disruption	Salinomycin is directly described as a potassium ionophore in mechanistic studies of its anticancer effects	(ref)
2	Cancer stem cell (CSC) fraction / stemness programs	↓ CSC proportion / tumor-initiating capacity	Selective CSC depletion	Landmark study showing salinomycin strongly reduces CSC proportion (e.g., >100-fold vs paclitaxel in their assay context) and inhibits tumor growth in vivo	(ref)
3	Wnt/β-catenin signaling	↓	Loss of self-renewal signaling	Primary mechanistic paper identifying salinomycin as an inhibitor of the Wnt signaling cascade	(ref)
4	Wnt co-receptor LRP6 (Wnt pathway control point)	↓ LRP6 / ↓ Wnt signaling	Wnt pathway suppression	Shows salinomycin suppresses LRP6 expression at concentrations relevant to growth inhibition, linking activity to Wnt/β-catenin suppression	(ref)
5	Autophagic flux + lysosomal proteolysis	↓ autophagic flux (blocked) / ↓ lysosomal proteolytic activity	Abortive autophagy / stress accumulation	Demonstrates salinomycin blocks autophagic flux and lysosomal proteolytic activity in breast cancer CSC and non-CSC populations	(ref)
6	ER stress / UPR (ATF4 → CHOP/DDIT3)	↑ ER stress / ↑ CHOP axis	Proteotoxic stress signaling	Shows salinomycin stimulates ER stress and mediates autophagy through the ATF4–CHOP–TRIB3 axis	(ref)
7	AKT–mTOR survival signaling (via TRIB3)	↓ AKT / ↓ mTOR signaling	Reduced survival + altered autophagy control	Same mechanistic work links ER stress activation to TRIB3-mediated inhibition of AKT1–mTOR signaling after salinomycin exposure	(ref)
8	ROS generation and ROS-linked lysosomal dysfunction	↑ ROS	Oxidative stress amplification	Demonstrates salinomycin-induced ROS and connects ROS to lysosomal membrane permeability and impaired autophagy flux	(ref)
9	Mitochondrial apoptosis (caspase cascade)	↑ Caspase-9/3 activation	Programmed cell death	Shows salinomycin triggers caspase-dependent apoptosis involving caspases (including 9 and 3) in a salinomycin toxicity/mechanism study (demonstrates directionality for caspase activation)	(ref)
10	EMT phenotype	↑ E-cadherin / ↓ vimentin (EMT suppressed)	Reduced migration/invasion	Reports salinomycin increases epithelial markers and decreases mesenchymal markers in a dose-dependent manner, with reduced migration/invasion	(ref)
11	ABC transporter–mediated multidrug resistance	↓ functional MDR phenotype	Overcomes drug resistance	Directly reports salinomycin overcomes ABC transporter–mediated multidrug/apoptosis resistance in leukemia stem cell–like cells	(ref)
12	Ferroptosis susceptibility (GPX4 axis) in CSC context	↑ ferroptosis (context-dependent)	Non-apoptotic oxidative death modality	Reports salinomycin induces ferroptosis in a CSC context via a pathway converging on GPX4/GPX activity regulation (directionality: ferroptosis induction by salinomycin in that model)	(ref)

pH, : Click to Expand ⟱

Source:

Type:

Tumor Microenvironment: Cancer cells often thrive in a more acidic environment compared to normal cells. This is partly due to the metabolic processes of cancer cells, which can produce lactic acid and other acidic byproducts. The acidic microenvironment can promote tumor growth and invasion.
Many tumors exhibit an acidic microenvironment. This is largely due to the high rate of glycolysis (often referred to as the Warburg effect), even in the presence of oxygen, leading to lactate production. Acidification is thought to promote invasion, metastasis, and resistance to certain chemotherapies.
The body maintains a relatively stable pH in the blood (around 7.4). However, the pH of tissues can vary, and tumors can exhibit a lower pH.

-Normal tissues have a higher extracellular pH than intracellular pH, in cancer is exactly the opposite. (inversion of the pH gradient).

Cancer cells often overexpress proton pumps (such as V-ATPase) and transporters that actively extrude protons (H⁺) to maintain an intracellular pH conducive to their growth.
Inhibiting these pumps can lead to intracellular acidification and potentially induce apoptosis or render cancer cells more vulnerable to other treatments.

Normal pH levels in the body:
Nasal: ~6.3 pH
Mouth/saliva: 6.2-7.6 pH
Stomach: 1-3 pH
Small Intestine: 5.9-6.8 pH
Colon/Large Intestine: 6.8-7 pH

Scientific Papers found: Click to Expand⟱

1884-

DCA,

Sal,

Dichloroacetate and Salinomycin Exert a Synergistic Cytotoxic Effect in Colorectal Cancer Cell Lines

in-vitro,

CRC,

DLD1

in-vitro,

CRC,

HCT116

eff↑, pH↓, PDKs↓, Warburg↓,

Showing Research Papers: 1 to 1 of 1

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 1

Pathway results for Effect on Cancer / Diseased Cells:

Core Metabolism/Glycolysis ⓘ

PDKs↓, 1, Warburg↓, 1,

Cellular Microenvironment ⓘ

pH↓, 1,

Drug Metabolism & Resistance ⓘ

eff↑, 1,
Total Targets: 4

Pathway results for Effect on Normal Cells:

Total Targets: 0

Scientific Paper Hit Count for: pH,

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