Which approach uses a validated target to search for hits and leverages known biology?

Which approach uses a validated target to search for hits and leverages known biology?

• A. Structure-based drug design
• B. Target-centered drug design
• C. Compound-centered design
• D. Analogues of natural ligands

Answer: (B)

Centering the hit search on a validated target and leveraging known biology means you start with a target whose role in the disease is well supported, and you design or screen compounds to modulate that target using knowledge of the biology to guide assays, readouts, and optimization. This approach reduces risk by tying the work to a defined mechanism and disease-relevant pathways, so you can interpret how changes in target engagement translate to therapeutic effects. It's distinct from structure-based design, which relies on the target’s 3D structure to guide chemistry (and can be used even when biology isn’t fully validated), from compound-centered design, which explores chemical space without a predefined validated target, and from analogues of natural ligands, which focuses on modifying an existing ligand rather than starting from a validated disease target.

Centering the hit search on a validated target and leveraging known biology means you start with a target whose role in the disease is well supported, and you design or screen compounds to modulate that target using knowledge of the biology to guide assays, readouts, and optimization. This approach reduces risk by tying the work to a defined mechanism and disease-relevant pathways, so you can interpret how changes in target engagement translate to therapeutic effects. It's distinct from structure-based design, which relies on the target’s 3D structure to guide chemistry (and can be used even when biology isn’t fully validated), from compound-centered design, which explores chemical space without a predefined validated target, and from analogues of natural ligands, which focuses on modifying an existing ligand rather than starting from a validated disease target.