Leland Stanford Junior University

China Pharmaceutical University

Hequan Yao

Jianghong Rao

Min-kyung So

Sheng Jiang

Yiwu Yao

Haiping Hao

Dong Chen

Zhengchao Tu

Yatao Qiu

A heterocyclic urea compound, and specifically discloses an indoleamine-2,3-dioxygenase inhibitor of a heterocyclic urea compound, which solves the problems of weak curative effect and larger toxic and side effects of existing immunological therapy drugs. The invention further provides a preparation method for an indoleamine-2,3-dioxygenase inhibitor of a heterocyclic urea compound, and an application of the indoleamine-2,3-dioxygenase inhibitor of a heterocyclic urea compound or a pharmaceutically acceptable salt thereof in preparing drugs for treating or preventing tumors.

Heterocyclic urea compound, and drug composition and application thereof

A bioluminogenic assay system including: providing a bioluminogenic substrate incorporating a beta-lactam antibiotic, a bioluminescence initiating compound, and a chemical linkage joining the beta-lactam antibiotic to the bioluminescence initiating compound; exposing the bioluminogenic substrate to a beta-lactamase enzyme that catalyzes the release of the bioluminescence initiating compound from the bioluminogenic substrate; co-exposing the bioluminogenic substrate to a bioluminescence indicator reaction that employs the bioluminescence initiating compound as a substrate; and detecting a light from the bioluminescence indicator reaction as a measure of the activity of the beta-lactamase enzyme.

Bioluminogenic assay system for measuring beta-lactamase activity

Growing community of inventors

Nanjing, China

Hequan Yao