ALCAM

Article about the ALCAM protein

Activated Leukocyte Cell Adhesion Molecule (ALCAM), also known as CD166, is a protein that in humans is encoded by the ALCAM gene. ALCAM is a member of the immunoglobulin superfamily and plays a crucial role in cell adhesion, which is essential for various physiological and pathological processes.

Structure

ALCAM is a type I transmembrane glycoprotein composed of five extracellular immunoglobulin-like domains, a single transmembrane domain, and a short cytoplasmic tail. The extracellular region is responsible for mediating homophilic (ALCAM-ALCAM) and heterophilic (ALCAM-CD6) interactions, which are important for cell-cell adhesion.

Function

ALCAM is involved in a variety of cellular processes, including:

• Cell adhesion: ALCAM mediates both homophilic and heterophilic cell-cell adhesion, which is crucial for tissue architecture and integrity.
• Immune response: ALCAM is expressed on activated leukocytes and plays a role in the immune response by facilitating interactions between immune cells.
• Neural development: ALCAM is expressed in the nervous system and is involved in axon guidance and neuronal migration.
• Cancer progression: ALCAM expression is altered in various cancers, and it has been implicated in tumor progression and metastasis.

Clinical Significance

ALCAM has been studied as a potential biomarker for several diseases, including cancer. Its expression levels can correlate with tumor aggressiveness and patient prognosis. In addition, ALCAM is being investigated as a therapeutic target for cancer treatment.

Research

Research on ALCAM continues to explore its role in different physiological and pathological contexts. Studies are focusing on its molecular interactions, signaling pathways, and potential as a therapeutic target.

Also see

• Cell adhesion molecule
• Immunoglobulin superfamily
• CD6
• Cancer biomarker