H2S Cancer Research Results

H2S, hydrogen sulfide: Click to Expand ⟱
Source:
Type:
In the liver, H₂S is produced endogenously through the enzymatic activity of cystathionine β‐synthase (CBS), cystathionine γ‐lyase (CSE), and the mitochondrial 3-mercaptopyruvate sulfurtransferase (3-MST).

– In the liver, H₂S participates in maintaining metabolic homeostasis and controlling oxidative stress, with a dual role depending on its concentration and context.

At low-to-moderate levels, H₂S generally supports cytoprotection, angiogenesis, and pro-survival pathways. In contrast, high levels of H₂S can trigger oxidative stress and cytotoxicit.
Scientific Papers found: Click to Expand⟱
5356- AL,    Therapeutic role of allicin in gastrointestinal cancers: mechanisms and safety aspects
- Review, GC, NA
Apoptosis↑, induction of apoptosis, inhibition of proliferation, and disruption of cancer cell signaling pathways, including the MAPK, PI3K/AKT, and NF-κB pathways.
TumCP↓,
MAPK↓,
PI3K↓,
Akt↓,
NF-kB↓,
AntiCan↑, Allicin and its other derivatives, such as diallyl disulfide (DADS) and ajoene, have been found to have strong anticancer potential both in vitro and in vivo.
ChemoSen↑, effectiveness of allicin in augmenting conventional chemotherapy and retarding tumor growth proves that allicin is one of the most efficient complementary therapies.
TumCCA↑, In liver cancer, allicin has been shown to mediate cell cycle arrest and apoptosis
Apoptosis↑,
BioAv↑, Allicin (diallyl thiosulfinate) is a compound that is generated when a garlic clove is crushed
selectivity↑, Furthermore, it has no influence on the growth of healthy intestinal cells when it causes stomach cancer cells to undergo apoptosis
TGF-β↓, Allicin can reduce the production of TGF-β2 and its receptor after directly entering gastric cancer cells.
ROS↑, It induces oxidative stress by generating reactive oxygen species (ROS), leading to DNA damage and activation of key apoptotic mediators such as phospho-p53 and p21 [81].
DNAdam↑,
p‑P53↑,
P21↑,
cycD1/CCND1↓, Additionally, cyclin D1, cyclin E, and cyclin-dependent kinases (CDKs) can all be inhibited by allicin.
cycE/CCNE↓,
CDK4↓, suppressing the CDK-4/6/cyclin D complex
CDK6↓,
MMP↓, By lowering the outer mitochondrial membrane potential (MMP), allicin raises levels of nuclear factor kappa B (NF-κB), the proapoptotic protein Bax, while decreasing the antiapoptotic protein Bcl-2, which leads to apoptosis.
NF-kB↑,
BAX↑,
Bcl-2↓,
ER Stress↑, cellular effects of allicin, including its role in inducing ER stress
Casp↑, enhancing caspase activation and apoptosis-inducing factor (AIF)-mediated cell death.
AIF↑,
Fas↑, increasing Fas receptor expression and its binding to Fas ligand (FasL), leading to apoptosis through caspase-8 and cytochrome c activation.
Casp8↑,
Cyt‑c↑,
cl‑PARP↑, leading to poly (ADP-ribose) polymerase (PARP) cleavage and DNA fragmentation.
Ca+2↑, allicin elevates intracellular free Ca2⁺ levels, causing endoplasmic reticulum (ER) stress, which plays a critical role in apoptosis induction
*NRF2↑, by activating the Nrf2 pathway via KLF9, allicin protects against arsenic trioxide-induced liver damage,
*chemoP↑, Additionally, allicin has shown promise in reducing hepatotoxicity caused by tamoxifen (TAM), a commonly used treatment for hormone-dependent breast cancer
*GutMicro↑, Shi et al. [85] found that allicin can ameliorate high-fat diet-induced obesity in mice by altering their gut microbiome.
CycB/CCNB1↑, DATS impaired cell survival in the G2 phase by significantly upregulating cyclins A2 and B1.
H2S↑, DATS can also react with the cellular thiol glutathione to create H2S gas, which can control several other cellular functions [79].
HIF-1↓, allicin treatment (40 µg/ml) for NSCLC lowers the expression of HIF-1 and HIF-2 in hypoxic cells [73]
RadioS↑, Allicin has been shown to increase the sensitivity of X-ray radiation therapy in colorectal cancer, presumably by suppressing the levels of NF-κB, IKKβ mRNA, p-NF-κB, and p-IKKβ protein expression in vitro and in vivo

2558- AL,    Allicin, an Antioxidant and Neuroprotective Agent, Ameliorates Cognitive Impairment
- Review, AD, NA
*AntiCan↑, Allicin has shown anticancer, antimicrobial, antioxidant properties and also serves as an efficient therapeutic agent against cardiovascular diseases
*antiOx↑,
*cardioP↑,
*neuroP↑, present review describes allicin as an antioxidant, and neuroprotective molecule
cognitive↑, that can ameliorate the cognitive abilities in case of neurodegenerative and neuropsychological disorders.
*ROS↓, As an antioxidant, allicin fights the reactive oxygen species (ROS) by downregulation of NOX (NADPH oxidizing) enzymes, it can directly interact to reduce the cellular levels of different types of ROS produced by a variety of peroxidases.
*NOX↓,
*TLR4↓, inhibition of TLR4/MyD88/NF-κB, P38 and JNK pathways.
*NF-kB↓,
*JNK↓,
*AntiAg↑, A low concentration of allicin (0.4 mM) can inhibit the platelet aggregation up to 90%, the impact is significantly higher than of similar concentration of aspirin.
*H2S↑, Allicin decomposes rapidly and undergoes a series of reactions with glutathione resulting in the production of hydrogen sulphide (H2S).
*BP↓, H2S is a gaseous signalling molecule involved in the regulation of blood pressure.
Telomerase↓, Allicin inhibits the activity of telomerase in a dose dependent manner subsequently inhibiting the proliferation in the cancer cells
*Insulin↑, Studies have shown a significant increase in the blood insulin levels after treatment with allicin
BioAv↝, optimum temperature for the activity of alliinase is 33 °C, it operates best at pH 6.5, the enzyme is sensitive to acids [42,43] (Figure 3), enteric-coated formulations of garlic supplements are therefore recommended
*GSH↑, It helps to lower the hyperglycaemic conditions and improves the glutathione and catalase biosynthesis [37,38]
*Catalase↑,

2660- AL,    Allicin: A review of its important pharmacological activities
- Review, AD, NA - Review, Var, NA - Review, Park, NA - Review, Stroke, NA
*Inflam↓, It showed neuroprotective effects, exhibited anti-inflammatory properties, demonstrated anticancer activity, acted as an antioxidant, provided cardioprotection, exerted antidiabetic effects, and offered hepatoprotection.
AntiCan↑,
*antiOx↑,
*cardioP↑, This vasodilatory effect helps protect against cardiovascular diseases by reducing the risk of hypertension and atherosclerosis.
*hepatoP↑,
*BBB↑, This allows allicin to easily traverse phospholipid bilayers and the blood-brain barrier
*Half-Life↝, biological half-life of allicin is estimated to be approximately one year at 4°C. However, it should be noted that its half-life may differ when it is dissolved in different solvents, such as vegetable oil
*H2S↑, allicin undergoes metabolism in the body, leading to the release of hydrogen sulfide (H2S)
*BP↓, H2S acts as a vasodilator, meaning it relaxes and widens blood vessels, promoting blood flow and reducing blood pressure.
*neuroP↑, It acts as a neuromodulator, regulating synaptic transmission and neuronal excitability.
*cognitive↑, Studies have suggested that H2S may enhance cognitive function and protect against neurodegenerative diseases like Alzheimer's and Parkinson's by promoting neuronal survival and reducing oxidative stress.
*neuroP↑, various research studies suggest that the neuroprotective mechanisms of allicin can be attributed to its antioxidant and anti-inflammatory properties
*ROS↓,
*GutMicro↑, may contribute to the overall health of the gut microbiota.
*LDH↓, Liu et al. found that allicin treatment led to a significant decrease in the release of lactate dehydrogenase (LDH),
*ROS↓, allicin's capacity to lower the production of reactive oxygen species (ROS), decrease lipid peroxidation, and maintain the activities of antioxidant enzymes
*lipid-P↓,
*antiOx↑,
*other↑, allicin was found to enhance the expression of sphingosine kinases 2 (Sphk2), which is considered a neuroprotective mechanism in ischemic stroke
*PI3K↓, allicin downregulated the PI3K/Akt/nuclear factor-kappa B (NF-κB) pathway, inhibiting the overproduction of NO, iNOS, prostaglandin E2, cyclooxygenase-2, interleukin-6, and tumor necrosis factor-alpha induced by interleukin-1 (IL-1)
*Akt↓,
*NF-kB↓,
*NO↓,
*iNOS↓,
*PGE2↓,
*COX2↓,
*IL6↓,
*TNF-α↓, Allicin has been found to regulate the immune system and reduce the levels of TNF-α and IL-8.
*MPO↓, Furthermore, allicin significantly decreased tumor necrosis factor-alpha (TNF-α) levels and myeloperoxidase (MPO) activity, indicating its neuroprotective effect against brain ischemia via an anti-inflammatory pathway
*eff↑, Allicin, in combination with melatonin, demonstrated a marked reduction in the expression of nuclear factor erythroid 2-related factor 2 (Nrf-2), Kelch-like ECH-associated protein 1 (Keap-1), and NF-κB genes in rats with brain damage induced by acryl
*NRF2↑, Allicin treatment decreased oxidative stress by upregulating Nrf2 protein and downregulating Keap-1 expression.
*Keap1↓,
*TBARS↓, It significantly reduced myeloperoxidase (MPO) and thiobarbituric acid reactive substances (TBARS) levels,
*creat↓, and decreased blood urea nitrogen (BUN), creatinine, LDH, aspartate aminotransferase (AST), alanine aminotransferase (ALT), and malondialdehyde (MDA) levels.
*LDH↓,
*AST↓,
*ALAT↓,
*MDA↓,
*SOD↑, Allicin also increased the activity of superoxide dismutase (SOD) as well as the levels of glutathione S-transferase (GST) and glutathione (GSH) in the liver, kidneys, and brain
*GSH↑,
*GSTs↑,
*memory↑, Allicin has demonstrated its ability to improve learning and memory deficits caused by lead acetate injury by promoting hippocampal astrocyte differentiation.
chemoP↑, Allicin safeguards mitochondria from damage, prevents the release of cytochrome c, and decreases the expression of pro-apoptotic factors (Bax, cleaved caspase-9, cleaved caspase-3, and p53) typically activated by cisplatin
IL8↓, Allicin has been found to regulate the immune system and reduce the levels of TNF-α and IL-8.
Cyt‑c↑, In addition, allicin was reported to induce cytochrome c, increase expression of caspase 3 [86], caspase 8, 9 [82,87], caspase 12 [80] along with enhanced p38 protein expression levels [81], Fas expression levels [82].
Casp3↑,
Casp8↑,
Casp9↑,
Casp12↑,
p38↑,
Fas↑,
P53↑, Also, significantly increased p53, p21, and CHK1 expression levels decreased cyclin B after allicin treatment.
P21↑,
CHK1↓,
CycB/CCNB1↓,
GSH↓, Depletion of GSH and alterations in intracellular redox status have been found to trigger activation of the mitochondrial apoptotic pathway was the antiproliferative function of allicin
ROS↑, Hepatocellular carcinoma (HCC) cells were sensitised by allicin to the mitochondrial ROS-mediated apoptosis induced by 5-fluorouracil
TumCCA↑, According to research findings, allicin has been shown to decrease the percentage of cells in the G0/G1 and S phases [87], while causing cell cycle arrest at the G2/M phase
Hif1a↓, Allicin treatment was found to effectively reduce HIF-1α protein levels, leading to decreased expression of Bcl-2 and VEGF, and suppressing the colony formation capacity and cell migration rate of cancer cells
Bcl-2↓,
VEGF↓,
TumCMig↓,
STAT3↓, antitumor properties of allicin have been attributed to various mechanisms, including promotion of apoptosis, inhibition of STAT3 signaling
VEGFR2↓, suppression of VEGFR2 and FAK phosphorylation
p‑FAK↓,

2272- dietMet,    Methionine restriction - Association with redox homeostasis and implications on aging and diseases
- Review, Nor, NA
*OS↑, MR seems to be an approach to prolong lifespan which has been validated extensively in various animal models
*mt-ROS↓, Mitochondrial ROS reduction by methionine restriction (MR) maintains redox balance
*H2S↑, MR ameliorates oxidative stress by autophagy activation and hepatic H2S generation.
*FGF21↑, MR impact on cognition by upregulation of FGF21 and alterations of gut microbiome.
*cognitive↑,
*GutMicro↑,
*IGF-1↓, long-term, low-fat, whole-food vegan diet may increase life expectancy in humans by down-regulating IGF-I activity
*mTOR↓, Suppression of the mTOR pathway by MR can also lead to increased H2S production,
*GSH↑, 80% MR increases the GSH content in erythrocytes of rats,
*SOD↑, A diet restricting methionine to 80% (0.17% Met) significantly increases plasma SOD and decreases MDA levels while increasing mRNA expression of Nrf2, HO-1, and NQO-1 in the heart of HFD-fed mice with cardiovascular impairment
*MDA↓,
*NRF2↑,
*HO-1↑,
*NQO1↑,
*GLUT4↑, In skeletal muscle, MR improved expression and transport of GLUT4 and glycogen levels and increased the expression of glycolysis-related genes (HK2, PFK, PKM) in HFD-fed mice
*Glycolysis↑,
*HK2↑,
*PFK↑,
*PKM2↑,
*GlucoseCon↑, promoting glucose uptake and glycogen synthesis, glycolysis, and aerobic oxidation in skeletal muscle.
*ATF4↑, MR can increase the expression of hepatic FGF21 by activating GCN2/ATF4/PPARα signaling in liver cells, thereby improving insulin sensitivity, accelerating energy expenditure, and promoting fat oxidation and glucose metabolism
*PPARα↑,
GSH↓, MR was able to decrease GSH in HepG2 cells, thereby regulating the activation state of protein tyrosine phosphatases such as PTEN.
GSTs↑, decrease of GSH by MR also triggers upregulation of glutathione S-transferase
ROS↑, Double deprivation of methionine and cystine both in vitro and in vivo resulted in a decrease in GSH content, an increase in ROS levels, and an induction of autophagy in glioma cells
*neuroP↑, A neuroprotective role of FGF21


Showing Research Papers: 1 to 4 of 4

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 4

Pathway results for Effect on Cancer / Diseased Cells:


Redox & Oxidative Stress ⓘ

GSH↓, 2,   GSTs↑, 1,   ROS↑, 3,  

Mitochondria & Bioenergetics ⓘ

AIF↑, 1,   MMP↓, 1,  

Core Metabolism/Glycolysis ⓘ

H2S↑, 1,  

Cell Death ⓘ

Akt↓, 1,   Apoptosis↑, 2,   BAX↑, 1,   Bcl-2↓, 2,   Casp↑, 1,   Casp12↑, 1,   Casp3↑, 1,   Casp8↑, 2,   Casp9↑, 1,   Cyt‑c↑, 2,   Fas↑, 2,   MAPK↓, 1,   p38↑, 1,   Telomerase↓, 1,  

Protein Folding & ER Stress ⓘ

ER Stress↑, 1,  

DNA Damage & Repair ⓘ

CHK1↓, 1,   DNAdam↑, 1,   P53↑, 1,   p‑P53↑, 1,   cl‑PARP↑, 1,  

Cell Cycle & Senescence ⓘ

CDK4↓, 1,   CycB/CCNB1↓, 1,   CycB/CCNB1↑, 1,   cycD1/CCND1↓, 1,   cycE/CCNE↓, 1,   P21↑, 2,   TumCCA↑, 2,  

Proliferation, Differentiation & Cell State ⓘ

PI3K↓, 1,   STAT3↓, 1,  

Migration ⓘ

Ca+2↑, 1,   p‑FAK↓, 1,   TGF-β↓, 1,   TumCMig↓, 1,   TumCP↓, 1,  

Angiogenesis & Vasculature ⓘ

HIF-1↓, 1,   Hif1a↓, 1,   VEGF↓, 1,   VEGFR2↓, 1,  

Immune & Inflammatory Signaling ⓘ

IL8↓, 1,   NF-kB↓, 1,   NF-kB↑, 1,  

Hormonal & Nuclear Receptors ⓘ

CDK6↓, 1,  

Drug Metabolism & Resistance ⓘ

BioAv↑, 1,   BioAv↝, 1,   ChemoSen↑, 1,   RadioS↑, 1,   selectivity↑, 1,  

Functional Outcomes ⓘ

AntiCan↑, 2,   chemoP↑, 1,   cognitive↑, 1,  
Total Targets: 56

Pathway results for Effect on Normal Cells:


Redox & Oxidative Stress ⓘ

antiOx↑, 3,   Catalase↑, 1,   GSH↑, 3,   GSTs↑, 1,   HO-1↑, 1,   Keap1↓, 1,   lipid-P↓, 1,   MDA↓, 2,   MPO↓, 1,   NQO1↑, 1,   NRF2↑, 3,   ROS↓, 3,   mt-ROS↓, 1,   SOD↑, 2,   TBARS↓, 1,  

Mitochondria & Bioenergetics ⓘ

Insulin↑, 1,  

Core Metabolism/Glycolysis ⓘ

ALAT↓, 1,   FGF21↑, 1,   GlucoseCon↑, 1,   Glycolysis↑, 1,   H2S↑, 3,   HK2↑, 1,   LDH↓, 2,   PFK↑, 1,   PKM2↑, 1,   PPARα↑, 1,  

Cell Death ⓘ

Akt↓, 1,   iNOS↓, 1,   JNK↓, 1,  

Transcription & Epigenetics ⓘ

other↑, 1,  

Proliferation, Differentiation & Cell State ⓘ

IGF-1↓, 1,   mTOR↓, 1,   PI3K↓, 1,  

Migration ⓘ

AntiAg↑, 1,  

Angiogenesis & Vasculature ⓘ

ATF4↑, 1,   NO↓, 1,  

Barriers & Transport ⓘ

BBB↑, 1,   GLUT4↑, 1,  

Immune & Inflammatory Signaling ⓘ

COX2↓, 1,   IL6↓, 1,   Inflam↓, 1,   NF-kB↓, 2,   PGE2↓, 1,   TLR4↓, 1,   TNF-α↓, 1,  

Cellular Microenvironment ⓘ

NOX↓, 1,  

Drug Metabolism & Resistance ⓘ

eff↑, 1,   Half-Life↝, 1,  

Clinical Biomarkers ⓘ

ALAT↓, 1,   AST↓, 1,   BP↓, 2,   creat↓, 1,   GutMicro↑, 3,   IL6↓, 1,   LDH↓, 2,  

Functional Outcomes ⓘ

AntiCan↑, 1,   cardioP↑, 2,   chemoP↑, 1,   cognitive↑, 2,   hepatoP↑, 1,   memory↑, 1,   neuroP↑, 4,   OS↑, 1,  
Total Targets: 63

Scientific Paper Hit Count for: H2S, hydrogen sulfide
3 Allicin (mainly Garlic)
1 diet Methionine-Restricted Diet
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

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