Page last updated: 2024-10-24

cytolysis by host of symbiont cells

Definition

Target type: biologicalprocess

The killing by an organism of a cell in its symbiont organism by means of the rupture of cell membranes and the loss of cytoplasm. The symbiont is defined as the smaller of the organisms involved in a symbiotic interaction. [GOC:add]

Cytolysis, the lysis or destruction of cells, is a crucial process in the intricate interplay between a host organism and its symbiotic partner. In this context, the host employs various mechanisms to eliminate symbiont cells, often in response to specific stimuli.

The process of cytolysis by a host against its symbiont can be triggered by several factors, including:

* **Overpopulation of symbionts:** When the symbiont population grows excessively, it may threaten the host's resources or disrupt its normal functioning.
* **Harmful symbionts:** If the symbiont becomes pathogenic or detrimental to the host, cytolysis serves as a defense mechanism to eliminate the threat.
* **Change in environmental conditions:** Environmental changes, such as nutrient availability or temperature fluctuations, can alter the symbiosis dynamics and lead to the host targeting the symbiont for destruction.

The cytolytic mechanisms employed by the host are diverse and can involve:

* **Release of cytotoxic molecules:** The host may secrete toxic substances, like lytic enzymes, antimicrobial peptides, or reactive oxygen species, directly targeting the symbiont cell membrane, causing its disintegration.
* **Activation of immune responses:** The host's immune system may recognize specific antigens on the symbiont surface and mount an immune response, leading to the destruction of the symbiont cells. This response can involve phagocytosis by immune cells, complement activation, or antibody-mediated cytotoxicity.
* **Competition for resources:** The host may actively compete with the symbiont for essential nutrients or resources, indirectly contributing to the symbiont's demise.

The outcome of cytolysis is the elimination of the symbiont cells, either completely or partially, impacting the symbiosis dynamics. In some cases, cytolysis may lead to a temporary or permanent disruption of the symbiotic relationship. However, in other scenarios, it can be a vital mechanism for maintaining a balanced symbiosis by regulating the symbiont population and preventing its harmful effects.

This intricate interplay between host and symbiont highlights the complex and dynamic nature of biological interactions and the importance of understanding the delicate balance between cooperation and antagonism in symbiotic relationships.'
"

Proteins (1)

ProteinDefinitionTaxonomy
ProthrombinA prothrombin that is encoded in the genome of human. [PRO:DNx, UniProtKB:P00734]Homo sapiens (human)

Compounds (75)

CompoundDefinitionClassesRoles
5-(n,n-hexamethylene)amiloride5-(N,N-hexamethylene)amiloride : A member of the class of pyrazines that is amiloride in which the two amino hydrogens at position N-5 are replaced by a hexamethylene moiety, resulting in the formation of an azepane ring.

5-(N,N-hexamethylene)amiloride: inhibitor of Na+-H+ exchange; has anti-HIV-1 activity
aromatic amine;
azepanes;
guanidines;
monocarboxylic acid amide;
organochlorine compound;
pyrazines
antineoplastic agent;
apoptosis inducer;
odorant receptor antagonist;
sodium channel blocker
benzamidinebenzamidine : A carboxamidine that is benzene carrying an amidino group.

benzamidine: RN given refers to parent cpd
benzenes;
carboxamidine
serine protease inhibitor
bis(5-amidino-2-benzimidazolyl)methanebis(5-amidino-2-benzimidazolyl)methane: aromatic diamidine which has a significant suppressive effect on the cytopathology & yield of respiratory synctial (RS) virus; RN given refers to parent cpd
camostatcamostat : A benzoate ester resulting from the formal condensation of the carboxy group of 4-guanidinobenzoic acid with the hydroxy group of 2-(dimethylamino)-2-oxoethyl (4-hydroxyphenyl)acetate. It is a potent inhibitor of the human transmembrane protease serine 2 (TMPRSS2) and its mesylate salt is currently under investigation for its effectiveness in COVID-19 patients.benzoate ester;
carboxylic ester;
diester;
guanidines;
tertiary carboxamide
anti-inflammatory agent;
anticoronaviral agent;
antifibrinolytic drug;
antihypertensive agent;
antineoplastic agent;
antiviral agent;
serine protease inhibitor
fidexabanFidexaban: structure in first source
n(alpha)-(2-naphthylsulfonylglycyl)-4-amidinophenylalanine piperidideN(alpha)-(2-naphthylsulfonylglycyl)-4-amidinophenylalanine piperidide: thrombin inhibitor; RN given refers to parent cpd without isomeric designation
nafamostatnafamostat: inhibitor of trypsin, plasmin, pancreatic kallikrein, plasma kallikrein & thrombin; strongly inhibits esterolytic activities of C1r & C1 esterase complement-mediated hemolysis; antineoplasticbenzoic acids;
guanidines
sulfaguanidinesulfaguanidine : A sulfonamide incorporating a guanidine moiety used to block the synthesis of folic acid; mostly used in veterinary medicine

Sulfaguanidine: A sulfanilamide antimicrobial agent that is used to treat enteric infections.
sulfonamide antibioticantiinfective agent
triiodothyronine3,3',5-triiodo-L-thyronine : An iodothyronine compound having iodo substituents at the 3-, 3'- and 5-positions. Although some is produced in the thyroid, most of the 3,3',5-triiodo-L-thyronine in the body is generated by mono-deiodination of L-thyroxine in the peripheral tissues. Its metabolic activity is about 3 to 5 times that of L-thyroxine. The sodium salt is used in the treatment of hypothyroidism.

Triiodothyronine: A T3 thyroid hormone normally synthesized and secreted by the thyroid gland in much smaller quantities than thyroxine (T4). Most T3 is derived from peripheral monodeiodination of T4 at the 5' position of the outer ring of the iodothyronine nucleus. The hormone finally delivered and used by the tissues is mainly T3.
2-halophenol;
amino acid zwitterion;
iodophenol;
iodothyronine
human metabolite;
mouse metabolite;
thyroid hormone
proflavine3,6-diaminoacridine : An aminoacridine that is acridine that is substituted by amino groups at positions 3 and 6. A slow-acting bacteriostat that is effective against many Gram-positive bacteria (but ineffective against spores), its salts were formerly used for treatment of burns and infected wounds.

Proflavine: Topical antiseptic used mainly in wound dressings.
aminoacridinesantibacterial agent;
antiseptic drug;
carcinogenic agent;
chromophore;
intercalator
catechin(+)-catechin : The (+)-enantiomer of catechin and a polyphenolic antioxidant plant metabolite.

catechin : Members of the class of hydroxyflavan that have a flavan-3-ol skeleton and its substituted derivatives.

Catechin: An antioxidant flavonoid, occurring especially in woody plants as both (+)-catechin and (-)-epicatechin (cis) forms.

rac-catechin : A racemate comprising equimolar amounts of (+)- and (-)-catechin
catechinantioxidant;
plant metabolite
isoquinoline-1,3,4-trioneisoquinoline-1,3,4-trione: structure in first source
diphenylcarbazonediphenylcarbazone: sensitive reagent for Hg, for which it gives blue color; structure
dibrompropamidinearomatic ether
amilorideamiloride : A member of the class of pyrazines resulting from the formal monoacylation of guanidine with the carboxy group of 3,5-diamino-6-chloropyrazine-2-carboxylic acid.

Amiloride: A pyrazine compound inhibiting SODIUM reabsorption through SODIUM CHANNELS in renal EPITHELIAL CELLS. This inhibition creates a negative potential in the luminal membranes of principal cells, located in the distal convoluted tubule and collecting duct. Negative potential reduces secretion of potassium and hydrogen ions. Amiloride is used in conjunction with DIURETICS to spare POTASSIUM loss. (From Gilman et al., Goodman and Gilman's The Pharmacological Basis of Therapeutics, 9th ed, p705)
aromatic amine;
guanidines;
organochlorine compound;
pyrazines
diuretic;
sodium channel blocker
camptothecinNSC 100880: carboxylate (opened lactone) form of camptothecin; RN refers to (S)-isomer; structure given in first sourcedelta-lactone;
pyranoindolizinoquinoline;
quinoline alkaloid;
tertiary alcohol
antineoplastic agent;
EC 5.99.1.2 (DNA topoisomerase) inhibitor;
genotoxin;
plant metabolite
glutamic acidglutamic acid : An alpha-amino acid that is glutaric acid bearing a single amino substituent at position 2.

Glutamic Acid: A non-essential amino acid naturally occurring in the L-form. Glutamic acid is the most common excitatory neurotransmitter in the CENTRAL NERVOUS SYSTEM.
glutamic acid;
glutamine family amino acid;
L-alpha-amino acid;
proteinogenic amino acid
Escherichia coli metabolite;
ferroptosis inducer;
micronutrient;
mouse metabolite;
neurotransmitter;
nutraceutical
etoposidebeta-D-glucoside;
furonaphthodioxole;
organic heterotetracyclic compound
antineoplastic agent;
DNA synthesis inhibitor
captoprilcaptopril : A L-proline derivative in which L-proline is substituted on nitrogen with a (2S)-2-methyl-3-sulfanylpropanoyl group. It is used as an anti-hypertensive ACE inhibitor drug.

Captopril: A potent and specific inhibitor of PEPTIDYL-DIPEPTIDASE A. It blocks the conversion of ANGIOTENSIN I to ANGIOTENSIN II, a vasoconstrictor and important regulator of arterial blood pressure. Captopril acts to suppress the RENIN-ANGIOTENSIN SYSTEM and inhibits pressure responses to exogenous angiotensin.
alkanethiol;
L-proline derivative;
N-acylpyrrolidine;
pyrrolidinemonocarboxylic acid
antihypertensive agent;
EC 3.4.15.1 (peptidyl-dipeptidase A) inhibitor
1,2-di(5-amidino-2-benzofuranyl)ethane1,2-di(5-amidino-2-benzofuranyl)ethane: preferential inhibitor of bovine factor Xa; structure given in first source
hexamidinehexamidine : A polyether that is the bis(4-guanidinophenyl) ether of hexane-1,6-diol.aromatic ether;
guanidines;
polyether
antimicrobial agent;
antiseptic drug
inogatraninogatran: a direct low molecular weight thrombin inhibitor
epicatechin(-)-epicatechin : A catechin with (2R,3R)-configuration.catechin;
polyphenol
antioxidant
p-Aminobenzamidine dihydrochlorideorganic molecular entity
mci 9038peptide
sivelestatsivelestat: inhibitor of neutrophil elastase; structure given in first sourceN-acylglycine;
pivalate ester
dx 9065
efegatranefegatran: RN & structure given in first source; RN given refers to parent cpd (D)-isomer
acetylphenylalanyl-prolyl-boroarginineAc-(D)Phe-Pro-boroArg-OH : A C-terminal boronic acid petide that is N-acetyl-D-phenylalanyl-L-prolyl-L-arginine in which the C-termnal carboxy group has been replaced by a borono (-B(OH)2) group. A thrombin (Factor IIa) inhibitor, thereby acting as an anticoagulant.

DuP-714 : A hydrochloride resulting from the formal reaction of equimolar amounts of Ac-(D)Phe-Pro-boroArg-OH and hydrogen chloride. A thrombin (Factor IIa) inhibitor, thereby acting as an anticoagulant.
acetamides;
C-terminal boronic acid peptide;
guanidines
anticoagulant;
EC 3.4.21.5 (thrombin) inhibitor
cyanidincyanidin cation : An anthocyanidin cation that is flavylium substituted at positions 3, 3', 4', 5 and 7 by hydroxy groups.

cyanidin: RN given refers to parent cpd; structure
5-hydroxyanthocyanidinantioxidant;
metabolite;
neuroprotective agent
foy 2514-(4-guanidinobenzoyloxy)phenylacetic acid: RN given refers to monomethanesulfonate
homonojirimycinhomonojirimycin: inhibits alpha-glucosidase; RN given for (2R-(2alpha,3alpha,4beta,5alpha,6beta))-isomer; structure in first source
l 694,458DMP 777: structure given in first source
melagatranazetidines;
carboxamidine;
dicarboxylic acid monoamide;
non-proteinogenic alpha-amino acid;
secondary amino compound
anticoagulant;
EC 3.4.21.5 (thrombin) inhibitor;
serine protease inhibitor
pefabloc
razaxabanrazaxaban: structure in first source
dabigatrandabigatran : An aromatic amide obtained by formal condensation of the carboxy group of 2-{[(4-carbamimidoylphenyl)amino]methyl}-1-methyl-1H-benzimidazole-5-carboxylic acid with the secondary amoino group of N-pyridin-2-yl-beta-alanine. The active metabolite of the prodrug dabigatran etexilate, it acts as an anticoagulant which is used for the prevention of stroke and systemic embolism.

Dabigatran: A THROMBIN inhibitor which acts by binding and blocking thrombogenic activity and the prevention of thrombus formation. It is used to reduce the risk of stroke and systemic EMBOLISM in patients with nonvalvular atrial fibrillation.
aromatic amide;
benzimidazoles;
beta-alanine derivative;
carboxamidine;
pyridines
anticoagulant;
EC 1.10.99.2 [ribosyldihydronicotinamide dehydrogenase (quinone)] inhibitor;
EC 3.4.21.5 (thrombin) inhibitor
sitosterol, (3beta)-isomersitosterol : A member of the class of phytosterols that is stigmast-5-ene substituted by a beta-hydroxy group at position 3.

Sobatum: tradename; active fraction of Solanum trilobatum; reduces side-effects of radiation-induced toxicity
3beta-hydroxy-Delta(5)-steroid;
3beta-sterol;
C29-steroid;
phytosterols;
stigmastane sterol
anticholesteremic drug;
antioxidant;
mouse metabolite;
plant metabolite;
sterol methyltransferase inhibitor
bortezomibamino acid amide;
L-phenylalanine derivative;
pyrazines
antineoplastic agent;
antiprotozoal drug;
protease inhibitor;
proteasome inhibitor
benzamidinecarboxamidinium ion
phenylalanyl-prolyl-arginineoligopeptide
tosylarginine methyl esterTosylarginine Methyl Ester: Arginine derivative which is a substrate for many proteolytic enzymes. As a substrate for the esterase from the first component of complement, it inhibits the action of C(l) on C(4).guanidines;
L-arginine ester;
methyl ester;
sulfonamide
telaprevircyclopentapyrrole;
cyclopropanes;
oligopeptide;
pyrazines
antiviral drug;
hepatitis C protease inhibitor;
peptidomimetic
bradykinin (1-5)bradykinin (1-5): a stable marker of bradykinin production in vivo; a metabolite of bradykinin degradation in plasma
silybin
quercetin7-hydroxyflavonol;
pentahydroxyflavone
antibacterial agent;
antineoplastic agent;
antioxidant;
Aurora kinase inhibitor;
chelator;
EC 1.10.99.2 [ribosyldihydronicotinamide dehydrogenase (quinone)] inhibitor;
geroprotector;
phytoestrogen;
plant metabolite;
protein kinase inhibitor;
radical scavenger
camostat mesylatemethanesulfonate saltanti-inflammatory agent;
anticoronaviral agent;
antifibrinolytic drug;
antihypertensive agent;
antineoplastic agent;
antiviral agent;
serine protease inhibitor
cyclotheonamide acyclotheonamide A: a cyclic peptide isolated from the marine sponge Theonella; structure given in first source
ximelagatranximelagatran : A member of the class of azetidines that is melagatran in which the carboxylic acid group has been converted to the corresponding ethyl ester and in which the amidine group has been converted into the corresponding amidoxime. A prodrug for melagatran, ximelagatran was the first orally available direct thrombin inhibitor to be brought to market as an anticoagulant, but was withdrawn in 2006 following reports of it causing liver damage.

ximelagatran: prodrug (via hydroxylation) of melagatran & a direct thrombin inhibitor; liver toxicity concerns so AZD0837 being developed to replace this
amidoxime;
azetidines;
carboxamide;
ethyl ester;
hydroxylamines;
secondary amino compound;
secondary carboxamide;
tertiary carboxamide
anticoagulant;
EC 3.4.21.5 (thrombin) inhibitor;
prodrug;
serine protease inhibitor
otamixabanotamixaban: structure in first source
bms 7408081-(3-aminobenzisoxazol-5'-yl)-3-trifluoromethyl-6-(2'-(3-hydroxy-N-pyrrolidinyl)methyl-(1,1')-biphen-4-yl)-1,4,5,6-tetrahydropyrazolo-(3,4-c)-pyridin-7-one: structure in first source
napsagatrannapsagatran: structure given in first source
talabostattalabostat: an antineoplastic agent; structure in first source
n,n-(4-xylylidene)bisaminoguanidineN,N-(4-xylylidene)bisaminoguanidine: RN in Chemline for di-HCl: 7044-24-8; RN for unspecified HCl: 62580-72-7

N,N'-(p-xylylidene)bis(aminoguanidine) : A guanidine derivative comprised of two carbamimidamido (guanidino) groups, each linked via one of their amino nitrogens to the imino nitrogens of 1,4-phenylenedimethanimine.
bms-262084BMS-262084: an azetidinone-based tryptase inhibitor; structure in first source
ym 60828YM 60828: YM-466 is the mesylate salt
rivaroxabanrivaroxaban : A monocarboxylic acid amide obtained by formal condensation of the carboxy group of 5-chlorothiophene-2-carboxylic acid with the amino group of 4-{4-[(5S)-5-(aminomethyl)-2-oxo-1,3-oxazolidin-3-yl]phenyl}morpholin-3-one. An anticoagulant used for prophylaxis of venous thromboembolism in patients with knee or hip replacement surgery.

Rivaroxaban: A morpholine and thiophene derivative that functions as a FACTOR XA INHIBITOR and is used in the treatment and prevention of DEEP-VEIN THROMBOSIS and PULMONARY EMBOLISM. It is also used for the prevention of STROKE and systemic embolization in patients with non-valvular ATRIAL FIBRILLATION, and for the prevention of atherothrombotic events in patients after an ACUTE CORONARY SYNDROME.
aromatic amide;
lactam;
monocarboxylic acid amide;
morpholines;
organochlorine compound;
oxazolidinone;
thiophenes
anticoagulant;
EC 3.4.21.6 (coagulation factor Xa) inhibitor
n-alpha-(2,4,6-triisopropyl-phenylsulfonyl)-3-amidino-(l)-phenyl-alanine-4-ethoxycarbonyl-piperazide hydrochloride
dpc 423
gw 813893
l 374087
darexaban
lb 30057
darexaban glucuronidedarexaban glucuronide: structure in first source
apixabanaromatic ether;
lactam;
piperidones;
pyrazolopyridine
anticoagulant;
EC 3.4.21.6 (coagulation factor Xa) inhibitor
betrixabanbetrixaban : A secondary carboxamide obtained by formal condensation of the carboxy group of 4-(N,N-dimethylcarbamimidoyl)benzoic acid with the amino group of 2-amino-N-(5-chloropyridin-2-yl)-5-methoxybenzamide. A synthetic anticoagulant compound that targets activated factor Xa in the coagulation cascade.

betrixaban: a highly potent, selective, and orally efficacious factor Xa inhibitor; structure in first source
benzamides;
guanidines;
monochloropyridine;
monomethoxybenzene;
secondary carboxamide
anticoagulant;
EC 3.4.21.6 (coagulation factor Xa) inhibitor
rpr 120844
n-(3-amino-1-(cyclobutylmethyl)-2,3-dioxopropyl)-3-(2-((((1,1-dimethylethyl)amino)carbonyl)amino)-3,3-dimethyl-1-oxobutyl)-6,6-dimethyl-3-azabicyclo(3.1.0)hexan-2-carboxamideboceprevir : A synthetic tripeptide consisting of N-(tert-butylcarbamoyl)-3-methyl-L-valyl, a cyclopropyl-fused prolyl and 3-amino-4-cyclobutyl-2-oxobutanamide residues joined in sequence. Used for treatment of chronic hepatitis C virus genotype 1 infection.tripeptide;
ureas
antiviral drug;
hepatitis C protease inhibitor;
peptidomimetic
(z,z)-babch
anabaenopeptin banabaenopeptin B: from cyanobacteria Planktothrix (Oscillatoria) rubescens
dysinosin adysinosin A: structure in first source
PF-00835231PF-00835231 : A primary alcohol resulting from the cleavage of the phosphate group of the prodrug PF-07304814. It is an inhibitor of SARS-CoV-1 and -2 main protease (3CLpro) and exhibits potent in vitro antiviral activity.aromatic ether;
indolecarboxamide;
L-leucine derivative;
primary alcohol;
pyrrolidin-2-ones;
secondary carboxamide
anticoronaviral agent;
drug metabolite;
EC 3.4.22.69 (SARS coronavirus main proteinase) inhibitor
mk-7009vaniprevir : An azamacrocyclic compound that is a hepatitis C virus (HCV) NS3/4A protease inhibitor which is approved for the treatment of hepatitis C virus infections in Japan.

vaniprevir: inhibits hepatitis C virus NS3/4a protease
azamacrocycle;
carbamate ester;
cyclopropanes;
N-sulfonylcarboxamide;
pyrrolidinecarboxamide
antiviral drug;
hepatitis C protease inhibitor
grassystatin agrassystatin A: isolated from a cyanobacterium, identified as Lyngbya cf.; structure in first source
rpx7009RPX7009: a beta-lactamase inhibitor; structure in first source