ISDA

Entry Detail

PDB ID:

8TTZ

Keywords:

IMMUNE SYSTEM

Title:

Crystal structure of monkey TLR7 ectodomain with compound 20

Biological Source:

Source Organism:

Macaca mulatta

Host Organism:

Drosophila melanogaster

PDB Version:

Deposition Date:

2023-08-15

Release Date:

2024-02-07

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

3.14 Å

R-Value Free:

0.24

R-Value Work:

0.19

R-Value Observed:

0.19

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Toll-like receptor 7
Chain IDs:A, B
Chain Length:817
Number of Molecules:2
Biological Source:Macaca mulatta

UniProt ID:B3Y653 Pfam ID:PF13855

Ligand Molecules

NAG

QCX

SO4

Primary Citation

Discovery of Novel TLR7 Agonists as Systemic Agent for Combination With aPD1 for Use in Immuno-oncology.

Poudel, Y.B, He, L, Cox, M, Zhang, Q, Johnson, W.L, Cong, Q, Cheng, H, Chowdari, N.S, Tarby, C, Donnell, A.F, Broekema, M, O'Malley, D.P, Zhang, Y, A M Subbaiah, M, Kumar, B.V, Subramani, L, Wang, B, Li, Y.X, Sivaprakasam, P, Critton, D, Mulligan, D, Sandhu, B, Xie, C, Ramakrishnan, R, Nagar, J, Dudhgaonkar, S, Oderinde, M.S, Murtaza, A, Schieven, G.L, Mathur, A, Gavai, A.V, Vite, G, Gangwar, S.Show

Acs Med.Chem.Lett. 15 181 188 (2024)

PMID: 38352830 DOI: 10.1021/acsmedchemlett.3c00455

Abstact

We have designed and developed novel and selective TLR7 agonists that exhibited potent receptor activity in a cell-based reporter assay. In vitro, these agonists significantly induced secretion of cytokines IL-6, IL-1β, IL-10, TNFa, IFNa, and IP-10 in human and mouse whole blood. Pharmacokinetic and pharmacodynamic studies in mice showed a significant secretion of IFNα and TNFα cytokines. When combined with aPD1 in a CT-26 tumor model, the lead compound showed strong synergistic antitumor activity with complete tumor regression in 8/10 mice dosed using the intravenous route. Structure-activity relationship studies enabled by structure-based designs of TLR7 agonists are disclosed.

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Primary Citation of related structures