Page last updated: 2024-10-24

negative regulation of ferroptosis

Definition

Target type: biologicalprocess

Any process that stops, prevents, or reduces the frequency, rate or extent of ferroptosis. [GOC:sp, PMID:24439385, PMID:25402683, PMID:29290465]

Negative regulation of ferroptosis is a complex cellular process that counteracts the iron-dependent form of programmed cell death known as ferroptosis. This process is essential for maintaining cellular homeostasis and preventing excessive cell death. Key mechanisms involved in negative regulation of ferroptosis include:

1. **Lipid peroxidation inhibition:** Ferroptosis is driven by the accumulation of lipid peroxidation products in cell membranes. This process is inhibited by enzymes like glutathione peroxidase 4 (GPX4), which reduces lipid hydroperoxides to their corresponding alcohols, thus preventing the formation of reactive oxygen species (ROS) and mitigating membrane damage.

2. **Iron metabolism regulation:** Iron is crucial for ferroptosis, as it serves as a catalyst for the generation of ROS. Negative regulation involves mechanisms that control iron availability, including:

* **Ferritin:** This protein binds and sequesters iron, preventing its participation in ROS formation.
* **Hepcidin:** This hormone regulates iron absorption in the intestine and iron release from macrophages.
* **Transferrin:** This protein binds iron in the blood, reducing its accessibility for Fenton reactions that generate ROS.

3. **Antioxidant defense:** Cells employ various antioxidant mechanisms to counteract oxidative stress and prevent ferroptosis. These include:

* **Glutathione:** This tripeptide acts as a reducing agent and is crucial for GPX4 activity.
* **NADPH:** This cofactor is essential for the regeneration of reduced glutathione, maintaining its antioxidant capacity.
* **Other antioxidant enzymes:** Superoxide dismutase (SOD) and catalase are involved in the detoxification of ROS.

4. **Autophagy:** This cellular process removes damaged organelles, including mitochondria, which are major sources of iron and ROS. Autophagy contributes to the clearance of lipid peroxidation products and the reduction of ferroptosis susceptibility.

5. **Signaling pathways:** Multiple signaling pathways regulate ferroptosis, including:

* **p53 pathway:** p53 activation can induce the expression of genes involved in ferroptosis suppression, such as GPX4.
* **NF-κB pathway:** NF-κB activation can promote the expression of antioxidant genes, contributing to ferroptosis resistance.

6. **Other mechanisms:**

* **Coenzyme Q10:** This lipid-soluble antioxidant can protect against lipid peroxidation.
* **Lipoic acid:** This antioxidant can scavenge ROS and contribute to ferroptosis suppression.

7. **Regulation of lipid metabolism:** Ferroptosis is influenced by the composition of cell membranes. The regulation of lipid biosynthesis and degradation can impact the susceptibility to ferroptosis.

Negative regulation of ferroptosis is a complex and tightly regulated process involving multiple cellular pathways and mechanisms. This intricate balance is essential for maintaining cellular health and preventing excessive cell death in response to various stresses.'
"

Proteins (4)

ProteinDefinitionTaxonomy
Cystine/glutamate transporterA cystine/glutamate transporter that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9UPY5]Homo sapiens (human)
Nuclear factor erythroid 2-related factor 2A nuclear factor erythroid 2-related factor 2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q16236]Homo sapiens (human)
Phospholipid hydroperoxide glutathione peroxidaseA phospholipid hydroperoxide glutathione peroxidase GPX4 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P36969]Homo sapiens (human)
NADAn NAD(P)H dehydrogenase [quinone] 1 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P15559]Homo sapiens (human)

Compounds (48)

CompoundDefinitionClassesRoles
melatoninacetamides;
tryptamines
anticonvulsant;
central nervous system depressant;
geroprotector;
hormone;
human metabolite;
immunological adjuvant;
mouse metabolite;
radical scavenger
4'-bromoflavone4'-bromoflavone: structure in first source
beta-naphthoflavonebeta-naphthoflavone : An extended flavonoid resulting from the formal fusion of a benzene ring with the f side of flavone.

beta-Naphthoflavone: A polyaromatic hydrocarbon inducer of P4501A1 and P4501A2 cytochromes. (Proc Soc Exp Biol Med 1994 Dec:207(3):302-308)
extended flavonoid;
naphtho-gamma-pyrone;
organic heterotricyclic compound
aryl hydrocarbon receptor agonist
beta-lapachonebeta-lapachone : A benzochromenone that is 3,4-dihydro-2H-benzo[h]chromene-5,6-dione substituted by geminal methyl groups at position 2. Isolated from Tabebuia avellanedae, it exhibits antineoplastic and anti-inflammatory activities.

beta-lapachone: antineoplastic inhibitor of reverse transcriptase, DNA topoisomerase, and DNA polymerase
benzochromenone;
orthoquinones
anti-inflammatory agent;
antineoplastic agent;
plant metabolite
vitamin k 3Vitamin K 3: A synthetic naphthoquinone without the isoprenoid side chain and biological activity, but can be converted to active vitamin K2, menaquinone, after alkylation in vivo.1,4-naphthoquinones;
vitamin K
angiogenesis inhibitor;
antineoplastic agent;
EC 3.4.22.69 (SARS coronavirus main proteinase) inhibitor;
human urinary metabolite;
nutraceutical
mesalaminemesalamine : A monohydroxybenzoic acid that is salicylic acid substituted by an amino group at the 5-position.

Mesalamine: An anti-inflammatory agent, structurally related to the SALICYLATES, which is active in INFLAMMATORY BOWEL DISEASE. It is considered to be the active moiety of SULPHASALAZINE. (From Martindale, The Extra Pharmacopoeia, 30th ed)
amino acid;
aromatic amine;
monocarboxylic acid;
monohydroxybenzoic acid;
phenols
non-steroidal anti-inflammatory drug
sulfapyridinesulfapyridine : A sulfonamide consisting of pyridine with a 4-aminobenzenesulfonamido group at the 2-position.

Sulfapyridine: Antibacterial, potentially toxic, used to treat certain skin diseases.
pyridines;
substituted aniline;
sulfonamide;
sulfonamide antibiotic
antiinfective agent;
dermatologic drug;
drug allergen;
environmental contaminant;
xenobiotic
sulfasalazinesulfasalazine : An azobenzene consisting of diphenyldiazene having a carboxy substituent at the 4-position, a hydroxy substituent at the 3-position and a 2-pyridylaminosulphonyl substituent at the 4'-position.

Sulfasalazine: A drug that is used in the management of inflammatory bowel diseases. Its activity is generally considered to lie in its metabolic breakdown product, 5-aminosalicylic acid (see MESALAMINE) released in the colon. (From Martindale, The Extra Pharmacopoeia, 30th ed, p907)
sulforaphanesulforaphane : An isothiocyanate having a 4-(methylsulfinyl)butyl group attached to the nitrogen.

sulforaphane: from Cardaria draba L.
isothiocyanate;
sulfoxide
antineoplastic agent;
antioxidant;
EC 3.5.1.98 (histone deacetylase) inhibitor;
plant metabolite
cysteinecysteine;
cysteine zwitterion;
L-alpha-amino acid;
proteinogenic amino acid;
serine family amino acid
EC 4.3.1.3 (histidine ammonia-lyase) inhibitor;
flour treatment agent;
human metabolite
dimethylformamideDimethylformamide: A formamide in which the amino hydrogens are replaced by methyl groups.

N,N-dimethylformamide : A member of the class of formamides that is formamide in which the amino hydrogens are replaced by methyl groups.
formamides;
volatile organic compound
geroprotector;
hepatotoxic agent;
polar aprotic solvent
iberinisothiocyanate;
sulfoxide
apoptosis inducer;
plant metabolite;
quorum sensing inhibitor
oleanolic acidhydroxy monocarboxylic acid;
pentacyclic triterpenoid
plant metabolite
2-tert-butylhydroquinone2-tert-butylhydroquinone : A member of the class of hydroquinones in which one of the ring hydrogens of hydroquinone is replaced by a tert-butyl group.

2-tert-butylhydroquinone: an anticarcinogenic and chemopreventive agent
hydroquinonesfood antioxidant
quisqualic acidQuisqualic Acid: An agonist at two subsets of excitatory amino acid receptors, ionotropic receptors that directly control membrane channels and metabotropic receptors that indirectly mediate calcium mobilization from intracellular stores. The compound is obtained from the seeds and fruit of Quisqualis chinensis.non-proteinogenic alpha-amino acid
brusatolbrusatol: quassinoid from B. javanica; structuretriterpenoid
hei 712organofluorine compound;
quinolone
c 1303C 1303: DNa-binding drug; structure given indicates that the cpd should be the dimethylamino cpd, but it is named as the diethylamino cpd
serine o-sulfateL-serine O-sulfate : A non-proteinogenic L-alpha-amino acid that is the O-sulfo derivative of L-serine.

serine O-sulfate: RN given refers to (L)-isomer
L-serine derivative;
non-proteinogenic L-alpha-amino acid;
O-sulfoamino acid
homocysteic acidhomocysteic acid : A non-proteinogenic alpha-amino acid that is homocysteine in which the thiol group has benn oxidised to the corresponding sulfonic acid.

homocysteic acid: promotes growth in hypophysectomized rats; RN given refers to parent cpd

L-homocysteic acid : A homocysteic acid with L-configuration.
homocysteic acidNMDA receptor agonist
2-(5-Chlorobenzo[b]thiophen-3-yl)acetic acid1-benzothiophenes
alyssinsulfoxide
nsc 366140NSC 366140: a 9-methoxypyrazoloacridine; structure given in first source
bardoxolone methylmethyl 2-cyano-3,12-dioxooleana-1,9(11)-dien-28-oate: structure in first sourcecyclohexenones
resveratroltrans-resveratrol : A resveratrol in which the double bond has E configuration.resveratrolantioxidant;
phytoalexin;
plant metabolite;
quorum sensing inhibitor;
radical scavenger
dimethyl fumaratediester;
enoate ester;
methyl ester
antipsoriatic;
immunomodulator
(1e,4e)-1,5-bis(2-methoxyphenyl)penta-1,4-dien-3-one
curcumincurcumin : A beta-diketone that is methane in which two of the hydrogens are substituted by feruloyl groups. A natural dyestuff found in the root of Curcuma longa.

Curcumin: A yellow-orange dye obtained from tumeric, the powdered root of CURCUMA longa. It is used in the preparation of curcuma paper and the detection of boron. Curcumin appears to possess a spectrum of pharmacological properties, due primarily to its inhibitory effects on metabolic enzymes.
aromatic ether;
beta-diketone;
diarylheptanoid;
enone;
polyphenol
anti-inflammatory agent;
antifungal agent;
antineoplastic agent;
biological pigment;
contraceptive drug;
dye;
EC 1.1.1.205 (IMP dehydrogenase) inhibitor;
EC 1.1.1.21 (aldehyde reductase) inhibitor;
EC 1.1.1.25 (shikimate dehydrogenase) inhibitor;
EC 1.6.5.2 [NAD(P)H dehydrogenase (quinone)] inhibitor;
EC 1.8.1.9 (thioredoxin reductase) inhibitor;
EC 2.7.10.2 (non-specific protein-tyrosine kinase) inhibitor;
EC 3.5.1.98 (histone deacetylase) inhibitor;
flavouring agent;
food colouring;
geroprotector;
hepatoprotective agent;
immunomodulator;
iron chelator;
ligand;
lipoxygenase inhibitor;
metabolite;
neuroprotective agent;
nutraceutical;
radical scavenger
umi-77UMI-77: an Mcl-1 inhibitor; structure in first source
2-chloro-N-heptyl-N-(3-methylphenyl)acetamideanilide
2,6-bis(2,5-dimethoxybenzylidene)cyclohexanone2,6-bis(2,5-dimethoxybenzylidene)cyclohexanone: an anti-inflammatory agent that down-regulates cyclooxygenase-2 expression; structure in first source
N-(1,3-benzodioxol-5-yl)-2-chloro-N-[(2-prop-2-enoxyphenyl)methyl]acetamidebenzodioxoles
susalimodsusalimod: analogue of sulphasalazine, was designed for use in the treatment of rheumatoid arthritis
ML162ML162 : A monochlorobenzene that is benzene substituted by (chloroacetyl){2-oxo-2-[(2-phenylethyl)amino]-1-(thiophen-2-yl)ethyl}amino, chloro and methoxy groups at positions 1, 3 and 4, respectively. It is a covalent inhibitor of glutathione peroxidase 4 (GPX4) that induces ferroptosis in cells.monochlorobenzenes;
monomethoxybenzene;
organochlorine compound;
secondary carboxamide;
tertiary carboxamide;
thiophenes
EC 1.11.1.9 (glutathione peroxidase) inhibitor;
ferroptosis inducer
5-methoxy-1,2-dimethyl-3-((4-nitrophenoxy)methyl)indole-4,7-dione5-methoxy-1,2-dimethyl-3-((4-nitrophenoxy)methyl)indole-4,7-dione: structure in first source
strigolstrigol : A strigolactone in which the tricyclic lactone moiety bears a hydroxy substitutuent at the position para to the gem-dimethyl group.

strigol: a strigolactone from roots of various PLANTS; it stimulates seed germination of parasitic STRIGA and OROBANCHE; structure in first source
indenofuran;
secondary alcohol;
strigolactone
bisantrene
4,3',5'-tri-o-methylpiceatannol
hylin
6-methylsulfinylhexyl isothiocyanate6-(Methylsulfinyl)hexyl isothiocyanate: showed a dose-dependent inhibition of LPS-induced nitric oxide (NO), iNOS mRNA and protein.sulfoxide
memoquinmemoquin: structure in first source
dimethoxycurcumindimethoxycurcumin: has antineoplsatic activity; structure in first source
erastinerastin : A member of the class of quinazolines that is quinazolin-4(3H)-one in which the hydrogens at positions 2 and 3 are replaced by 1-{4-[(4-chlorophenoxy)acetyl]piperazin-1-yl}ethyl and 2-ethoxyphenyl groups, respectively. It is an inhibitor of voltage-dependent anion-selective channels (VDAC2 and VDAC3) and a potent ferroptosis inducer.

erastin: an antineoplastic agent; structure in first source
aromatic ether;
diether;
monochlorobenzenes;
N-acylpiperazine;
N-alkylpiperazine;
quinazolines;
tertiary carboxamide
antineoplastic agent;
ferroptosis inducer;
voltage-dependent anion channel inhibitor
ML-210ML-210 : An N-acylpiperazine that is piperazine substituted by 5-methyl-4-nitro-1,2-oxazole-3-carbonyl and bis(4-chlorophenyl)methyl groups at positions 1 and 4, respectively. It is a glutathione peroxidase 4 (GPX4) inhibitor which induces ferroptosis in cancer cells expressing the RAS oncogene.C-nitro compound;
diarylmethane;
isoxazoles;
monochlorobenzenes;
N-acylpiperazine;
N-alkylpiperazine;
tertiary carboxamide
antineoplastic agent;
EC 1.11.1.9 (glutathione peroxidase) inhibitor;
ferroptosis inducer;
prodrug
dicumarolDicumarol: An oral anticoagulant that interferes with the metabolism of vitamin K. It is also used in biochemical experiments as an inhibitor of reductases.hydroxycoumarinanticoagulant;
EC 1.6.5.2 [NAD(P)H dehydrogenase (quinone)] inhibitor;
Hsp90 inhibitor;
vitamin K antagonist
ethyl biscoumacetateEthyl Biscoumacetate: A coumarin that is used as an anticoagulant. It has actions similar to those of WARFARIN. (From Martindale, The Extra Pharmacopoeia, 30th ed, p226)hydroxycoumarin
nsc 158393NSC 158393: structure given in first source
(1S,2R)-2-[[(1S)-1-[(1,3-dioxo-2-isoindolyl)methyl]-3,4-dihydro-1H-isoquinolin-2-yl]-oxomethyl]-1-cyclohexanecarboxylic acidLH601A: inhibits the interaction between KEAP1 and NRF2; structure in first sourcephthalimides