DDR1-IN-3

Cell experiment:

Panc-1 cells are plated at low density in media in the presence or absence of controls or the indicated concentration of DDR-TRK-1 (0.016, 0.0625, 0.25, 1 μM). Colony formation is evaluated after 1.5-2 weeks by fixing and staining with crystal violet. The effect of DDR1-IN-3 on cell migration is determined through a ‘scratch’ assay. Panc-1 cells are grown to confluence in a 6 well dish. A scratch is made using a p20 pipette tip and cell migration into the wound is determined at 12, 24, 48, 60, and 72 hrs. The effect of control compounds or DDR-TRK-1 at the indicated concentrations is determined at each time point[1].

Animal experiment:

Mice[1]To induce pulmonary damage, 6- to 8-week-old sex- and age-matched wild type or slie mice (at least five animals per group) are intranasally dropped with bleomycin at 5mg/kg BW. The inhibitors (e.g., DDR-TRK-1) are dissolved in water at a concentration of 5 mg/mL and given to the mice orally by gavage twice a day. Hydroxyproline accounts for 13.4% of the total amino acids of collagen; thus its content can be used to reflect the severity of fibrosis. A commercial hydroxyproline kit is used. Briefly, fresh lung tissues are weighted and hydrolyzed to release hydroxyproline. After a series of chemical reactions, a pink color solution is formed and then subjected to measurement of absorbance at 560 nm. The hydroxyproline content of each sample is calculated by comparing with the standards[1].

References:

[1]. Zhen Wang, et al. Structure-Based Design of Tetrahydroisoquinoline-7-carboxamides as Selective Discoidin Domain Receptor 1 (DDR1) Inhibitors. J Med Chem. 2016 Jun 23; 59(12): 5911–5916.