Abstract:
:Recruitment of suppressive CD4+ FOXP3+ regulatory T cells (Treg) to the tumor microenvironment (TME) has the potential to weaken the antitumor response in patients receiving treatment with immuno-oncology (IO) agents. Human Treg express CCR4 and can be recruited to the TME through the CC chemokine ligands CCL17 and CCL22. In some cancers, Treg accumulation correlates with poor patient prognosis. Preclinical data suggests that preventing the recruitment of Treg and increasing the population of activated effector T cells (Teff) in the TME can potentiate antitumor immune responses. We developed a novel series of potent, orally bioavailable small molecule antagonists of CCR4. From this series, several compounds exhibited high potency in distinct functional assays in addition to good in vitro and in vivo ADME properties. The design, synthesis, and SAR of this series and confirmation of its in vivo activity are reported.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Jackson JJ,Ketcham JM,Younai A,Abraham B,Biannic B,Beck HP,Bui MHT,Chian D,Cutler G,Diokno R,Hu DX,Jacobson S,Karbarz E,Kassner PD,Marshall L,McKinnell J,Meleza C,Okal A,Pookot D,Reilly MK,Robles O,Shunatona HPdoi
10.1021/acs.jmedchem.9b00506subject
Has Abstractpub_date
2019-07-11 00:00:00pages
6190-6213issue
13eissn
0022-2623issn
1520-4804journal_volume
62pub_type
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