Description: ADH-503 free base [(Z)-Leukadherin-1] is a novel, potent, selective, orally bioactive and allosteric agonist of the integrin CD11b to mitigate myeloid cell immunosuppression. The partial activation of CD11b by ADH-503 leads to the repolarization of tumor-associated macrophages, reduction in the number of tumor-infiltrating immunosuppressive myeloid cells, and enhanced dendritic cell responses. These actions, in turn, improve antitumor T cell immunity and render checkpoint inhibitors effective in previously unresponsive PDAC models.
References: Agonism of CD11b reprograms innate immunity to sensitize pancreatic cancer to immunotherapies. Sci Transl Med. 2019 Jul 3;11(499).
Related CAS #: 2055362-74-6 (choline) 2055362-72-4 (free base)