Cell signaling

Cell signaling
Term	Cell signaling
Short definition	cell signaling - (pronounced) (sel SIG-nuh-ling) The process by which a cell responds to substances outside the cell through signaling molecules found on the surface and inside the cell. Most molecules that result in cell signaling are chemical substances, such as hormones, neurotransmitters, and growth factors, that bind to a specific protein receptor (signaling molecule) on or in a cell.
Type	Cancer terms
Specialty	Oncology
Language	English
Source	NCI
Comments

cell signaling - (pronounced) (sel SIG-nuh-ling) The process by which a cell responds to substances outside the cell through signaling molecules found on the surface and inside the cell. Most molecules that result in cell signaling are chemical substances, such as hormones, neurotransmitters, and growth factors, that bind to a specific protein receptor (signaling molecule) on or in a cell. The signals are then passed from one molecule to another within the cell, resulting in a specific cellular response such as cell division or cell death. Cell signals are important for cells to grow and function normally. Cells with abnormal signaling molecules can become cancerous. Also called signal transduction

External links

• Medical encyclopedia article on Cell signaling
• Wikipedia's article - Cell signaling

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