Elucidation of novel 13-series resolvins that increase with atorvastatin and clear infections
New host-protective molecules containing conjugated triene and diene double bonds with each carrying a 13-carbon position alcohol and were derived from n-3 docosapentaenoic acid (DPA, C22:5) were produced in neutrophil-endothelial co-cultures, and they are present in human and mouse tissues after sterile inflammation or infection. These compounds, termed 13-series resolvins (RvT), demonstrated potent protective actions increasing mice survival during Escherichia coli infections. Their biosynthesis during neutrophil-endothelial cell interactions was initiated by endothelial cyclooxygenase-2 (COX-2) and increased by atorvastatin via S-nitrosylation of COX-2. Atorvastatin and RvT were additive in E. coli infections in mice where they accelerated resolution of inflammation and increased survival >60%. Results documented novel host protective molecules in bacterial infections, namely RvT, derived from n-3 DPA via transcellular biosynthesis and increased by atorvastatin. RvT also regulated human and mouse phagocyte responses stimulating bacterial phagocytosis and regulating inflammasome components to regulate key innate protective responses in the resolution of infectious-inflammation.
1. A resolvin compound having the formula:
wherein each of P 1 , P 2 and P 3 , when present, individually is a protecting group or a hydrogen atom;
, when present, represents a double bond and each double bond is independently in either the Z or the E configuration;
wherein the carbon at the 7 and 13 positions or 8, 12 or 20, when present, is independently in the R or S configuration;
Z is —C(O)OR d , —C(O)NR c R c , —C(O)H, —C(NH)NR c R c , —C(S)H, —C(S)OR d , —C(S)NR c R c , or —CN;
each R a , is independently selected from hydrogen, (C1-C6) alkyl, (C3-C8) cycloalkyl, cyclohexyl, (C4-C11) cycloalkylalkyl, (C5-C10) aryl, phenyl, (C6-C16) arylalkyl, benzyl, 2-6 membered heteroalkyl, 3-8 membered cycloheteroalkyl, morpholinyl, piperazinyl, homopiperazinyl, piperidinyl, 4-11 membered cycloheteroalkylalkyl, 5-10 membered heteroaryl or 6-16 membered heteroarylalkyl;
each R c , is independently a protecting group or R a , or, alternatively, each R c is taken together with the nitrogen atom to which it is bonded to form a 5 to 8-membered cycloheteroalkyl or heteroaryl which may optionally include one or more of the same or different additional heteroatoms and which may optionally be substituted with one or more of the same or different R a or suitable R b groups;
each R b is independently selected from ═O, —OR d , (C1-C3) haloalkyloxy, —OCF 3 , ═S, —SR d , ═NR d , ═NOR d , —NR c R c , halogen, —CF 3 , —CN, —NC, —OCN, —SCN, —NO, —NO 2 , ═N 2 , —N 3 , —S(O)R d , —S(O) 2 R d , —S(O) 2 OR d , —S(O)NR c R c , —S(O) 2 NR c R c , —OS(O)R d , —OS(O) 2 R d , —OS (O) 2 OR d , —OS(O) 2 NR c R c , —C(O)R d , —C(O)OR d , —C(O)NR c R c , —C(NH)NR c R c , —C(NR a )NR c R c , —C(NOH)R a , —C(NOH)NR c R c , —OC(O)R d , —OC(O)OR d , —OC(O)NR c R c , —OC(NH)NR c R c , —OC(NR a )N R c R c , —[NHC(O)] n R d , —[NR a C(O)] n R d , —[NHC(O)] n OR d , —[NR a C(O)] n OR d , —[NHC(O)] n NR c R c , —[NR a C(O)] n NR c R c , —[NHC(NH)] n NR c R c or —[NR a C(NR a )] n NR c R c ;
each n, independently is an integer from 0 to 3; and
each R d , independently is a protecting group or R a ;
provided when Z is —C(O)OR d , then R d for Z is not a hydrogen or a pharmaceutically acceptable salt thereof when P 1 , P 2 and/or P 3 , when present, are all hydrogen atoms.
2. The resolvin compound of claim 1 , wherein the compound is a pharmaceutically acceptable salt of the carboxylic acid.
3. A composition comprising the resolvin compound of claim 2 and a carrier.