Local acute inflammation is protective and ideally should be self-limited. Our recent evidence indicates that resolution of sterile acute inflammation is an active process with the identification of novel specialized proresolving lipid-derived mediators (SPM) we coined resolvins and protectins. These local mediators possess potent anti-inflammatory and pro-resolving actions. It is now evident that the resolution of inflammation caused by apoptotic cells or bacterial invasion in model in vivo systems remains largely uncharted and is critically needed. The focus of Project 1 in this program project is the systematic elucidation of resolution components during self-limited verses un-resolved inflammation using an unbiased mediator-lipidomics approach with exudates. Using this approach, we recently uncovered a new family of lipid mediators coined maresins (macrophage mediators in resolving inflammation;MaR) that actively regulate both neutrophils (PMN) and macrophages. Project 1 will test the following novel hypothesis : During self-limited inflammation local production of novel anti-inflammatory and pro-resolving mediators in exudates enhances the clearance of apoptotic cells and microbes for timely resolution. Resolvins, protectins and maresins are a newly identified genus of SPM that temporally govern PMN and macrophage responses required for tissue resolution and return to homeostasis. To address this, 3 specific aims are proposed: 1) Determine temporal relationship between resolvin and protectin (SPM) biosynthesis during resolution. We will determine the key events involved in self-limited resolution with SPM and with Projects 2 and 3;2) Activation of novel maresins and resolvins during resolution. MaR display potent anti-inflammatory and proresolving actions.
This aim will focus on MaR biosynthesis and stereochemistry with Projects 4 and will establish pro-resolving and protective actions in models of human disease with Core C and 3) Impact of maresins and resolvins in phagocyte responses in resolution. Here, we will identify SPM that accelerate resolution, clearance phagocyte anti-microbial activities in mice and human phagocytes. Together results from these will establish the role of novel SPM in resolution of inflammation.

Public Health Relevance

Unresolved inflammation is now linked to many diseases (including sepsis, kidney and inflammatory bowel disease) increasing cause of death. In this program, Project 1 focuses on newly uncovered pathways and mediators which are the body's own anti-inflammatory and pro-resolving agents. Knowledge ofthese new pathways can open resolution pharmacology and permit better treatments.

National Institute of Health (NIH)
National Institute of General Medical Sciences (NIGMS)
Research Program Projects (P01)
Project #
Application #
Study Section
Special Emphasis Panel (ZGM1-PPBC-3 (CP))
Project Start
Project End
Budget Start
Budget End
Support Year
Fiscal Year
Total Cost
Indirect Cost
Brigham and Women's Hospital
United States
Zip Code
Chen, Gang; Zhang, Yu-Qiu; Qadri, Yawar J et al. (2018) Microglia in Pain: Detrimental and Protective Roles in Pathogenesis and Resolution of Pain. Neuron 100:1292-1311
Tungen, J E; Aursnes, M; Ramon, S et al. (2018) Synthesis of protectin D1 analogs: novel pro-resolution and radiotracer agents. Org Biomol Chem 16:6818-6823
Sulciner, Megan L; Serhan, Charles N; Gilligan, Molly M et al. (2018) Resolvins suppress tumor growth and enhance cancer therapy. J Exp Med 215:115-140
Loynes, Catherine A; Lee, Jou A; Robertson, Anne L et al. (2018) PGE2 production at sites of tissue injury promotes an anti-inflammatory neutrophil phenotype and determines the outcome of inflammation resolution in vivo. Sci Adv 4:eaar8320
Zhang, Linlin; Terrando, Niccolò; Xu, Zhen-Zhong et al. (2018) Distinct Analgesic Actions of DHA and DHA-Derived Specialized Pro-Resolving Mediators on Post-operative Pain After Bone Fracture in Mice. Front Pharmacol 9:412
Dalli, Jesmond; Serhan, Charles N (2018) Immunoresolvents signaling molecules at intersection between the brain and immune system. Curr Opin Immunol 50:48-54
Norris, Paul C; Serhan, Charles N (2018) Metabololipidomic profiling of functional immunoresolvent clusters and eicosanoids in mammalian tissues. Biochem Biophys Res Commun 504:553-561
Werz, Oliver; Gerstmeier, Jana; Libreros, Stephania et al. (2018) Human macrophages differentially produce specific resolvin or leukotriene signals that depend on bacterial pathogenicity. Nat Commun 9:59
Colas, Romain A; Ashton, Anthony W; Mukherjee, Shankar et al. (2018) Trypanosoma cruzi Produces the Specialized Proresolving Mediators Resolvin D1, Resolvin D5, and Resolvin E2. Infect Immun 86:
Sham, Ho Pan; Walker, Katherine H; Abdulnour, Raja-Elie E et al. (2018) 15-epi-Lipoxin A4, Resolvin D2, and Resolvin D3 Induce NF-?B Regulators in Bacterial Pneumonia. J Immunol 200:2757-2766

Showing the most recent 10 out of 165 publications