Eritoran

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Eritoran
File:Eritoran skeletal.svg
Systematic (IUPAC) name
Tetrasodium [(2R,3R,4R,5S,6R)-4-decoxy-5-hydroxy-6-[[(2R,3R,4R,5S,6R)-4-[(3R)-3-methoxydecoxy]-6-(methoxymethyl)-3-[[(Z)-octadec-11-enoyl]amino]-5-phosphonatooxyoxan-2-yl]oxymethyl]-3-(3-oxotetradecanoylamino)oxan-2-yl] phosphate
Clinical data
Routes of
administration
intravenous injection
Legal status
Legal status
  • Investigational
Identifiers
CAS Number 185954-98-7
185955-34-4 (free acid)
ATC code none
PubChem CID 6450173
Synonyms E 5564
Chemical data
Formula C66H122N2Na4O19P2
Molar mass 1401.583 g/mol[[Script error: No such module "String".]]
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Eritoran is an investigational drug for the treatment of severe sepsis, an excessive inflammatory response to an infection. It is being developed by Eisai Co.[1][2] As of December 2009, a Phase III clinical trial is recruiting patients.[3]

Mechanism of action

Toll-like receptors (TLRs) play an important role in the innate immune system. They recognise microbes and activate inflammatory immune responses. Toll-like receptor 4 (TLR4) detects lipopolysaccharides found in most Gram-negative bacteria.[4]

Because of its similarity to the lipopolysaccharide lipid A, eritoran acts as TLR4 antagonist and so blocks the excessive reaction triggered by this receptor.[2][5]

File:Lipid A.png
Lipid A as found in E. coli, a gram-negative bacterium
File:Eritoran acid skeletal.svg
Eritoran (free acid)

References

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  1. "Eritoran: A Potential Therapeutic Agent In Severe Sepsis". MediNEWS.Direct. 17 October 2007. Retrieved 26 December 2009. 
  2. 2.0 2.1 Kiemer, Alexandra K. (2008). "TLR eröffnen neue Möglichkeiten". Pharmazeutische Zeitung online (in German). Govi-Verlag. Retrieved 26 December 2009. 
  3. ClinicalTrials.gov NCT00334828 ACCESS: A Controlled Comparison of Eritoran Tetrasodium and Placebo in Patients With Severe Sepsis
  4. "Entrez Gene: TLR4 toll-like receptor 4". 
  5. Tidswell, M; Tillis, W; Larosa, SP; Lynn, M; Wittek, AE; Kao, R; Wheeler, J; Gogate, J; Opal, SM (2010). "Phase 2 trial of eritoran tetrasodium (E5564), a Toll-like receptor 4 antagonist, in patients with severe sepsis". Critical care medicine. 38 (1): 72–83. doi:10.1097/CCM.0b013e3181b07b78. PMID 19661804.