Resolvin Biology

Resolvin Biology

Acute inflammation is normally followed by a resolution phase that protects tissue from the harmful effects of chronic inflammation. Once thought to be passive, resolution is now known to be actively regulated by endogenous lipid autacoids known as resolvins.


Resolvin E1 (RvE1), the active moiety in Thetis’ lead candidate, TP-317, is synthesized within inflamed tissue and acts locally to induce inflammation resolution. Therapeutic administration of TP-317 is associated with anti-inflammatory and mucosal healing effects in multiple models of inflammatory bowel disease (IBD).

Separate studies have demonstrated the ability of RvE1 to modulate cellular and molecular mechanisms implicated in IBD, including immune cell activation and trafficking and inflammatory cytokine signaling. RvE1 has also been shown to promote tissue repair and re-epithelialization, suggesting a role in mucosal healing. Finally, RvE1 has also demonstrated analgesic effects, suggesting an ability to impact both the pathologic mechanisms underlying IBD and one of its most debilitating symptoms. Together, these findings support further investigation of RvE1 as a novel IBD therapy.

Source: Wang and Colgan. Mol Aspects Med. 2017.

TP-317 Acts Directly on Mechanisms Involved in Mucosal Healing