calledSEPTIN9

calledSEPTIN9 is a gene that encodes for the protein septin 9, which is a member of the septin family of GTP-binding proteins. Septins are involved in various cellular processes, including cytokinesis, cell polarity, membrane dynamics, and vesicle trafficking. SEPTIN9 plays a crucial role in maintaining cytoskeletal structure and facilitating cell division.

The SEPTIN9 gene is located on chromosome 17q25.3 and is expressed in multiple tissues, including the brain, colon, and other epithelial tissues. The gene exhibits several isoforms resulting from alternative splicing, which can vary in expression and function across different cell types.

Research indicates that abnormalities in SEPTIN9, such as methylation or mutations, are associated with certain pathologies, most notably colorectal cancer. Abnormal methylation of the SEPTIN9 gene serves as a biomarker in non-invasive colorectal cancer screening tests, such as the Epi proColon test, which detects methylated SEPTIN9 DNA circulating in the blood.

Septin 9 interacts with other cytoskeletal components and facilitates the formation of filamentous structures essential for cellular architecture. Its function is regulated by GTP binding and hydrolysis, which influence its assembly and disassembly within the cell.

Overall, SEPTIN9 is a critical component of the cytoskeletal network with implications in cancer diagnostics and cell biology. Ongoing studies aim to elucidate its comprehensive role in health and disease, potentially paving the way for targeted therapies in cancers where its expression is dysregulated.