pH Cancer Research Results

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↑, The effect of combination of dichloracetate and salinomycin on multicellular spheroid size was stronger than the sum of both monotherapies, particularly in HCT116 cells
pH↓, and in contrast, it is not related to dichloroacetate-induced reduction of intracellular pH
PDKs↓, Dichloroacetate (DCA) is a small synthetic molecule that is known as a pyruvate dehydrogenase kinase inhibitor. Its anticancer properties involve reversing the Warburg effect by switching ATP production back to oxidative phosphorylation
Warburg↓,

1612- EA,    Negative Effect of Ellagic Acid on Cytosolic pH Regulation and Glycolytic Flux in Human Endometrial Cancer Cell
- in-vitro, EC, NA
NHE1↓, 48 hour treatment with Ellagic acid (20 µM) significantly decreased NHE1 transcript levels by 75%, NHE1 protein abundance by 95%
i-pH↓, pHi from 7.24 ± 0.01 to 7.02 ± 0.01
ROS↓, ROS by 82%
GlucoseCon↓, glucose uptake by 58%
NHE1↓, Treatment with EA is followed by a significant decline of NHE1 transcript levels, NHE1 protein abundance, and Na+/H+ exchanger activity.
Glycolysis↓, EA down-regulates expression and function of the Na+/H+ exchanger, decreases cytosolic acidification with subsequent impairment of glycolysis

645- EGCG,    The Effect of Ultrasound, Oxygen and Sunlight on the Stability of (−)-Epigallocatechin Gallate
- Analysis, NA, NA
eff↑, Without oxygen, EGCG in aqueous solution was rather stable
pH↓, acidic environments enhance the stability of EGCG

995- MEL,    Melatonin Treatment Triggers Metabolic and Intracellular pH Imbalance in Glioblastoma
- vitro+vivo, GBM, NA
LDHA↓,
MCT4↓,
lactateProd↓,
i-pH↓, decrease in intracellular pH: melatonin treatment induced a pH reversal with intracellular acidosis parallel to a downregulation in glycolysis in GBM.
ROS↑,
ATP↓,
TumCD↑, cytotoxic effects on GBM were due, at least in part, to intracellular pH modulation
TumCCA↑, cell cycle arrest at G0/G1 in both GBM1A and QNS120 and G2/M in GBM1A
PDH↓, decrease in pyruvate dehydrogenase (PDH) expression for both cell lines at aMT 3.0 mM
Glycolysis↓,
GlucoseCon↓,
TumCG↓, in vivo

5253- NCL,    Niclosamide: Beyond an antihelminthic drug
- Review, Var, NA
TumCP↓, Niclosamide was found to inhibit adrenocortical carcinoma cellular proliferation, which was associated with apoptosis, reduction of epithelial-to-mesenchymal transition and β-catenin levels.
Apoptosis↑,
EMT↓,
β-catenin/ZEB1↓,
TumCG↓, Oral administration of niclosamide led to tumor growth inhibition with no observed toxicity.
toxicity↓,
Wnt↓, Lu et al. reported that niclosamide inhibits Wnt/β-catenin signaling by promoting Wnt co-receptor LRP6 degradation in breast cancer cells [11].
LRP6↓,
eff↑, niclosamide acts synergistically with a monoclonal antibody that specifically activates TRAIL death receptor 5 to inhibit tumor growth of basal-like breast cancers [12].
DR5↑,
mTORC1↓,
pH↓, Niclosamide lowered the cytoplasmic pH and may indirectly lead to inhibition of mTORC1 signaling [13]
CSCs↓, Niclosamide also was found to prevent the conversion of non-breast cancer stem cells into cancer stem cells
IL6↓, This mechanism is associated with inhibition of the IL6-JAK1-STAT3 signal transduction pathway
JAK1↓,
STAT3↓, Ren et al. identified niclosamide as a potent STAT3 inhibitor able to suppress STAT3 transcriptional activity
ChemoSen↑, niclosamide alone or in combination with cisplatin represses the growth of xenografts of cisplatin-resistant triple-negative breast cancer cells.
TumCG↓, Niclosamide inhibited growth of colon cancer cells from human patients both in vitro and in vivo, regardless of mutations in APC [24].
tumCV↓, niclosamide selectively inhibited glioblastoma cell viability [29]. Detailed mechanism studies revealed that niclosamide suppressed the Wnt, Notch, mTOR, and NF-κB signaling pathways.
NOTCH↓,
NF-kB↓,
EGFR↓, Li et al. reported that inhibition of EGFR by erlotinib, an FDA-approved therapeutic agent, led to activation of STAT3 signaling in head and neck cancer cells
ROS↑, niclosamide inhibits TNF-α-induced NF-κB–dependent reporter activity and increased the levels of reactive oxygen species (ROS) in AML cells.
RadioS↑, niclosamide enhanced radiosensitivity of the non-small cell lung cancer cell line H1299.
cFos↓, inhibit osteosarcoma cell proliferation, migration, and survival. This inhibitory effect is associated with decreased expression of c-Fos, c-Jun. E2F1, and c-Myc.
cJun↓,
E2Fs↓,
cMyc↓,
Half-Life↓, Niclosamide exhibits a short half-life (6.0 ± 0.8 h). Niclosamide was rapidly absorbed with a Tmax of less than 30 min. The Cmax is 354 ± 152 ng/mL.
BioAv↝, AUC and bioavailability were 429 ± 100 and 10%, respectively. In order to make more effective use of niclosamide, additional work needs to be done to improve its solubility, absorption and systemic bioavailability.

4726- Se,  Oxy,    Oxygen therapy accelerates apoptosis induced by selenium compounds via regulating Nrf2/MAPK signaling pathway in hepatocellular carcinoma
- in-vivo, HCC, NA
eff↝, Selenium has good antitumor effects in vitro, but the hypoxic microenvironment in solid tumors makes its clinical efficacy unsatisfactory.
NRF2↓, We found that, in contrast to hypoxia, the hyperoxic environment facilitated the H2Se, produced by the selenium metabolism in cells, to be rapidly oxidized to generate H2O2, leading to inhibit the expression level of Nrf2
p‑p38↑, and to increase that of phosphorylation of p38 and MKK4, resulting in inhibiting autophagy and accelerating apoptosis
Apoptosis↑,
eff↑, These findings highlight oxygen can significantly enhance the anti-HCC effect of selenium compounds through regulating the Nrf2 and MAPK signaling pathways
TumVol↓, The results showed that hyperoxia could improve the efficacy of Na2SeO3 and CysSeSeCys in the treatment of HCC, enhance the death rate of HepG2 cells, and further reduce the tumor volume in mice
other↝, These results also suggest that the anticancer mechanism of selenium compounds may be different in different oxygen environments.
toxicity↓, staining results of the liver and kidney of mice showed that the selenium compound combined with oxygen therapy did not show toxicity or side effects on normal organs
Dose↝, therapeutic effect reached the level of the 5 mg/kg selenium compound treatment group
NRF2↝, The results showed that in the 1 % O2 environment, the two selenium compounds promoted the expression of Nrf2, and the Nrf2 level gradually decreased with increasing oxygen concentration.
HO-1↓, The expression of HO-1, CAT and SOD also showed a decreasing trend with increasing oxygen concentration
Catalase↓,
SOD↓,
e-pH↓, The results showed that the extracellular pH value decreased after treatment with selenium compounds for 48 h
pH∅, However, there was no significant change in extracellular pH value in the selenium compound treatment group compared with the oxygen alone group
MAPK↑, Selenium combined with oxygen therapy accelerates cell apoptosis by activating the MAPK signaling pathway
eff↑, In summary, oxygen can significantly enhance the antihepatocellular carcinoma effect of selenium compounds

636- VitC,    Acute Effects of Vitamin C Exposure On Colonic Crypts: Direct Modulation of pH Regulation
- in-vivo, NA, NA
pH↓, Acute addition of Vitamin C to the basolateral membrane maintains low intracellular pH for a longer period which could halt and/or prevent tumor formation.
SVCT-2∅, Vitamin C could potentially be transported via SVCT2


Showing Research Papers: 1 to 7 of 7

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 7

Pathway results for Effect on Cancer / Diseased Cells:


Redox & Oxidative Stress ⓘ

Catalase↓, 1,   HO-1↓, 1,   NRF2↓, 1,   NRF2↝, 1,   ROS↓, 1,   ROS↑, 2,   SOD↓, 1,  

Mitochondria & Bioenergetics ⓘ

ATP↓, 1,  

Core Metabolism/Glycolysis ⓘ

cMyc↓, 1,   GlucoseCon↓, 2,   Glycolysis↓, 2,   lactateProd↓, 1,   LDHA↓, 1,   MCT4↓, 1,   PDH↓, 1,   PDKs↓, 1,   Warburg↓, 1,  

Cell Death ⓘ

Apoptosis↑, 2,   DR5↑, 1,   MAPK↑, 1,   p‑p38↑, 1,   TumCD↑, 1,  

Transcription & Epigenetics ⓘ

cJun↓, 1,   other↝, 1,   tumCV↓, 1,  

Cell Cycle & Senescence ⓘ

E2Fs↓, 1,   TumCCA↑, 1,  

Proliferation, Differentiation & Cell State ⓘ

cFos↓, 1,   CSCs↓, 1,   EMT↓, 1,   LRP6↓, 1,   mTORC1↓, 1,   NOTCH↓, 1,   STAT3↓, 1,   TumCG↓, 3,   Wnt↓, 1,  

Migration ⓘ

TumCP↓, 1,   β-catenin/ZEB1↓, 1,  

Angiogenesis & Vasculature ⓘ

EGFR↓, 1,  

Barriers & Transport ⓘ

NHE1↓, 2,   SVCT-2∅, 1,  

Immune & Inflammatory Signaling ⓘ

IL6↓, 1,   JAK1↓, 1,   NF-kB↓, 1,  

Cellular Microenvironment ⓘ

pH↓, 4,   pH∅, 1,   e-pH↓, 1,   i-pH↓, 2,  

Drug Metabolism & Resistance ⓘ

BioAv↝, 1,   ChemoSen↑, 1,   Dose↝, 1,   eff↑, 5,   eff↝, 1,   Half-Life↓, 1,   RadioS↑, 1,  

Clinical Biomarkers ⓘ

EGFR↓, 1,   IL6↓, 1,  

Functional Outcomes ⓘ

toxicity↓, 2,   TumVol↓, 1,  
Total Targets: 59

Pathway results for Effect on Normal Cells:


Total Targets: 0

Scientific Paper Hit Count for: pH,
1 Dichloroacetate
1 salinomycin
1 Ellagic acid
1 EGCG (Epigallocatechin Gallate)
1 Melatonin
1 Niclosamide (Niclocide)
1 Selenium
1 Oxygen, Hyperbaric
1 Vitamin C (Ascorbic Acid)
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#:%  Target#:250  State#:%  Dir#:1
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