OXPHOS Cancer Research Results

OXPHOS, Oxidative phosphorylation: Click to Expand ⟱
Source:
Type:
Oxidative phosphorylation (or phosphorylation) is the fourth and final step in cellular respiration.
Alterations in phosphorylation pathways result in serious outcomes in cancer. Many signalling pathways including Tyrosine kinase, MAP kinase, Cadherin-catenin complex, Cyclin-dependent kinase etc. are major players of the cell cycle and deregulation in their phosphorylation-dephosphorylation cascade has been shown to be manifested in the form of various types of cancers.
Many tumors exhibit a well-known metabolic shift known as the Warburg effect, where glycolysis is favored over OxPhos even in the presence of oxygen. However, this is not universal.
Many cancers, including certain subpopulations like cancer stem cells, still rely on OXPHOS for energy production, biosynthesis, and survival.

– In several cancers, especially during metastasis or in tumors with high metabolic plasticity, OxPhos can remain active or even be upregulated to meet energy demands.

In some cancers, high OxPhos activity correlates with aggressive features, resistance to standard therapies, and poor outcomes, particularly when tumor cells exploit mitochondrial metabolism for survival and metastasis.

– Conversely, low OxPhos activity can be associated with a reliance on glycolysis, which is also linked with rapid tumor growth and certain adverse prognostic features.

Inhibiting oxidative phosphorylation is not a universal strategy against all cancers. Targeting OXPHOS can potentially disrupt the metabolic flexibility of cancer cells, leading to their death or making them more susceptible to other treatments.
Since normal cells also rely on OXPHOS, inhibitors must be carefully targeted to avoid significant toxicity to healthy tissues.
Not all tumors are the same. Some may be more glycolytic, while others depend more on mitochondrial metabolism. Therefore, metabolic profiling of tumors is crucial before adopting this strategy. Inhibiting OXPHOS is being explored in combination with other treatments (such as chemo- or immunotherapies) to improve efficacy and overcome resistance.

In cancer cells, metabolic reprogramming is a hallmark where cells often rely on glycolysis (known as the Warburg effect); however, many cancer types also depend on OXPHOS for energy production and survival. Targeting OXPHOS(using inhibitor) to increase the production of reactive oxygen species (ROS) can selectively induce oxidative stress and cell death in cancer cells.

-One side effect of increased OXPHOS is the production of reactive oxygen species (ROS).
-Many cancer cells therefore simultaneously upregulate antioxidant systems to mitigate the damaging effects of elevated ROS.
-Increase in oxidative phosphorylation can inhibit cancer growth.


Scientific Papers found: Click to Expand⟱
1854- dietFMD,    How Far Are We from Prescribing Fasting as Anticancer Medicine?
- Review, Var, NA
ChemoSideEff↓, ample nonclinical evidence indicating that fasting can mitigate the toxicity of chemotherapy and/or increase the efficacy of chemotherapy.
ChemoSen↑, Fasting-Induced Increase of the Efficacy of Chemotherapy
IGF-1↓,
IGFBP1↑, biological activity of IGF-1 is further compromised due to increased levels of insulin-like growth factor binding protein 1 (IGFBP1)
adiP↑, increased levels of adiponectin stimulate the fatty acid breakdown.
glyC↓, After depletion of stored glycogen, which occurs usually 24 h after initiation of fasting, the fatty acids serve as the main fuels for most tissues
E-cadherin↑, upregulation of E-cadherin expression via activation of c-Src kinase
MMPs↓, decrease of cytokines, chemokines, metalloproteinases, growth factors
Casp3↑, increase of level of activated caspase-3
ROS↑, it is postulated that the beneficial effects of fasting are ascribed to rapid metabolic and immunological response, triggered by a temporary increase in oxidative free radical production
ATP↓, Glucose deprivation leads to ATP depletion, resulting in ROS accumulation
AMPK↑, Additionally, ROS activate AMPK
mTOR↓, Under conditions of glucose deprivation, AMPK inhibits mTORC1
ROS↑, Beyond glucose deprivation, another mechanism increasing ROS levels is the AA (amino acids) starvation
Glycolysis↓, Indeed, in cancer cells, limited glucose sources impair glycolysis, decrease glycolysis-based NADPH production due to reduced utilization of the pentose phosphate pathway [88,89,90,91],
NADPH↓,
OXPHOS↝, and shift the metabolism from glycolysis to oxidative phosphorylation (OXPHOS) (“anti-Warburg effect”), leading to ROS overload [92,93,94,95].
eff↑, Fasting compared to long-term CR causes a more profound decrease in insulin (90% versus 40%, respectively) and blood glucose (50% versus 25%, respectively).
eff↑, FMD have been demonstrated to result in alterations of the serum levels of IGF-I, IGFBP1, glucose, and ketone bodies reminiscent of those observed in fasting
*RAS↓, A plausible explanation of the differential protective effect of fasting against chemotherapy is the attenuation of the Ras/MAPK and PI3K/Akt pathways downstream of decreased IGF-1 in normal cells
*MAPK↓,
*PI3K↓,
*Akt↓,
eff↑, Starvation combined with cisplatin has been shown in vitro to protect normal cells, promoting complete arrest of cellular proliferation mediated by p53/p21 activation in AMPK-dependent and ATM-independent manner
ROS↑, generation of ROS due to paradoxical activation of the AKT/S6K, partially via the AMPK-mTORC1 energy-sensing pathways malignant cells
Akt↑, cancer cells
Casp3↑, combination of fasting and chemotherapy was in part ascribed to enhanced apoptosis due to activation of caspase 3

5609- NaHCO3,    Alkalization of cellular pH leads to cancer cell death by disrupting autophagy and mitochondrial function
- in-vitro, Var, NA
eff↑, We then reported that alternate infusion of bicarbonate and anticancer agent into tumors via tumor feeding artery markedly enhanced the efficacy of transarterial chemoembolization (TACE) in the local control of hepatocellular carcinoma (HCC).
e-pH↑, Alkalizing cellular pH by bicarbonate decreased pH gradient (ΔpH), membrane potential (ΔΨm), and proton motive force (Δp) across the inner membrane of mitochondria;
MMP↓,
OXPHOS↝, disruption of oxidative phosphorylation (OXPHOS) due to collapsed Δp
AMP↑, led to a significant increase in adenosine monophosphate (AMP), which activated the classical AMPK-mediated autophagy.
TumAuto↑,
MPT↑, Bicarbonate also induced persistent mitochondrial permeability (MPT) and damaged mitochondria.
mtDam↑,

889- QC,    The multifaceted role of quercetin derived from its mitochondrial mechanism
- vitro+vivo, Var, NA
MMP↓,
ATP↝,
OXPHOS↝,
ROS↑, a prooxidant effect


Showing Research Papers: 1 to 3 of 3

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 3

Pathway results for Effect on Cancer / Diseased Cells:


Redox & Oxidative Stress

OXPHOS↝, 3,   ROS↑, 4,  

Mitochondria & Bioenergetics

ATP↓, 1,   ATP↝, 1,   MMP↓, 2,   MPT↑, 1,   mtDam↑, 1,  

Core Metabolism/Glycolysis

adiP↑, 1,   AMP↑, 1,   AMPK↑, 1,   glyC↓, 1,   Glycolysis↓, 1,   NADPH↓, 1,  

Cell Death

Akt↑, 1,   Casp3↑, 2,  

Autophagy & Lysosomes

TumAuto↑, 1,  

Proliferation, Differentiation & Cell State

IGF-1↓, 1,   IGFBP1↑, 1,   mTOR↓, 1,  

Migration

E-cadherin↑, 1,   MMPs↓, 1,  

Cellular Microenvironment

e-pH↑, 1,  

Drug Metabolism & Resistance

ChemoSen↑, 1,   eff↑, 4,  

Functional Outcomes

ChemoSideEff↓, 1,  
Total Targets: 25

Pathway results for Effect on Normal Cells:


Cell Death

Akt↓, 1,   MAPK↓, 1,  

Proliferation, Differentiation & Cell State

PI3K↓, 1,   RAS↓, 1,  
Total Targets: 4

Scientific Paper Hit Count for: OXPHOS, Oxidative phosphorylation
1 diet FMD Fasting Mimicking Diet
1 Bicarbonate(Sodium)
1 Quercetin
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#:230  State#:%  Dir#:4
wNotes=on sortOrder:rid,rpid

 

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