Title:Targeted D4 Dopamine Receptors: Implications for Drug Discovery and Therapeutic Development
Volume: 14
Issue: 4
Author(s): Radek Ptacek, Hana Kuzelova, George B. Stefano, Jiri Raboch and Richard M. Kream
Affiliation:
Keywords:
D4 receptors, DRD4, dopamine receptor gene, psychiatric disorders, schizophrenia, antipsychotics
Abstract: A wealth of preclinical and clinical literature has established functional associations of CNS dopamine (DA)
and its multiple G protein-coupled receptor (GPCR) types in the integration of key neurological processes linked to complex
behavioral activities. Conversely, an equivalent vast literature supports the role of aberrant CNS DA expression and
DA receptor signaling in the etiology and persistence of major psychiatric illnesses and has established selective targeting
of DA-ergic systems as a cornerstone of pharmacotherapeutic intervention and current neuroleptic drug development. The
present short review focuses on potential functional/behavioral alterations linked to polymorphisms in the primary DNA
sequence of the DA receptor type 4 (DRD4) gene in reference to major psychiatric illnesses. The potential clinical relevance
of major polymorphisms of the DRD4 gene are discussed within the context of practical aspects of typical and
atypical neuroleptic drug usage within afflicted populations of psychiatric patients. It is anticipated that additional complementary
molecular, biochemical, and behavioral studies of DRD4 gene polymorphisms will provide essential information
for selective targeting of heterogeneous populations of CNS D4 receptors and advance drug discovery and therapeutic
development efforts for highly efficacious treatment of psychiatric illnesses.
