HER4ERBB4

HER4ERBB4, also known as ErbB4, is a receptor tyrosine kinase that plays a significant role in cell growth, differentiation, and survival. It is a member of the ErbB family of receptors, which also includes EGFR, HER2, and HER3. ErbB4 is activated by binding to specific ligands, such as neuregulins, and its activation initiates intracellular signaling pathways that influence various cellular processes.

The ErbB4 receptor is expressed in a wide range of tissues, including the nervous system, heart, and mammary glands. Its diverse expression patterns highlight its multifaceted roles in development and adult physiology. In the nervous system, ErbB4 is involved in neuronal development, synaptic plasticity, and the regulation of neurotransmitter release. In the heart, it contributes to cardiac development and function. In the mammary gland, ErbB4 is crucial for the development and function of these tissues.

Dysregulation of ErbB4 signaling has been implicated in various diseases, including cancer and neurological disorders. Aberrant expression or mutations in ErbB4 can lead to uncontrolled cell proliferation, contributing to tumor growth and progression. Furthermore, alterations in ErbB4 signaling pathways have been linked to neurodegenerative conditions and psychiatric disorders. Research into ErbB4 continues to explore its therapeutic potential as a target for drug development in these diseases.