centrosome GO:0005813: Components and Research

The centrosome (GO:0005813) is a non-membrane-bound cellular component that serves as the primary microtubule-organizing center of most animal cells. According to the Gene Ontology, it is a structure comprised of a core structure, in most organisms a pair of centrioles, and peripheral material from which a microtubule-based structure such as a spindle apparatus is organized. Centrosomes occur close to the nucleus during interphase in many eukaryotic cells, although in animal cells the organelle changes continually during the cell-division cycle. Because it nucleates and anchors microtubules, the centrosome influences cell shape, polarity, intracellular transport, spindle assembly and chromosome segregation. Centrosome biology is relevant across eukaryotes. In Dictyostelium, the centrosome is a nucleus-associated body with a layered core that lacks centrioles but still organizes microtubules, illustrating evolutionary variation in centrosome architecture. In endothelial cells, the centrosome has specific features that support barrier maintenance and cell activity. During gametogenesis, centrosome reduction occurs in many species, and this remodeling is significant for fertilization and early development. In some cell types and developmental contexts, centrosome function is partially dispensable, showing that cells can use alternative microtubule-organizing pathways. For researchers, GO:0005813 provides a precise annotation target for microscopy, proteomics and functional genomics. Centrosome proteins such as CCDC81 promote ciliogenesis, linking the organelle to cilia-related signaling. Centrosome amplification is associated with breast cancer and other malignancies, making centrosome genes attractive candidates for mechanistic and translational studies. This article summarizes the definition, structure, molecular mechanism, key genes, disease links and research methods for the centrosome, with emphasis on CRISPR-based models.

In the Gene Ontology, GO:0005813 centrosome is defined as a structure comprised of a core structure, in most organisms a pair of centrioles, and peripheral material from which a microtubule-based structure, such as a spindle apparatus, is organized. Centrosomes occur close to the nucleus during interphase in many eukaryotic cells, though in animal cells the organelle changes continually during the cell-division cycle. In practical terms, the centrosome is the cell's main microtubule-organizing center, and its core plus pericentriolar material together nucleate, anchor and organize microtubules.

The centrosome is important because it organizes the microtubule cytoskeleton that controls cell shape, polarity, intracellular transport and chromosome segregation. Defects in centrosome number, structure or positioning can produce spindle abnormalities and aneuploidy, and centrosome amplification is a recognized feature of breast cancer and other tumors. Centrosome biology also intersects with ciliogenesis through proteins such as CCDC81, connecting the organelle to cilia-related signaling and developmental processes. In endothelial cells, centrosome features are functionally significant for barrier maintenance and cell activity. Because centrosome movements depend on TUBG1, perturbations of gamma-tubulin function can alter centrosome positioning and microtubule nucleation. Finally, centrosome reduction during gametogenesis shows that the organelle is developmentally remodeled, with significance for reproduction.

The following genes and proteins are representative centrosome components or regulators supported by the verified literature.

Centrosome behavior is regulated during the cell-division cycle. Centrosome maturation is a cell-cycle-dependent process that increases microtubule nucleation capacity before mitosis, and the centrosome changes continually during the cell-division cycle in animal cells. Centrosome movements are TUBG1-dependent, so gamma-tubulin function regulates organelle positioning. Centrosome reduction during gametogenesis shows developmental regulation of centrosome structure. In endothelial cells, centrosome features are functionally significant for cell activity and barrier maintenance, indicating cell-type-specific regulation.

Researchers studying centrosome-related genes often need to determine whether a candidate gene is causally involved in centrosome structure, movement, maturation or ciliogenesis, and CRISPR-based models provide a direct way to test these hypotheses. EDITGENE supports this work with knockout, point-mutation, knock-in, overexpression, library screening and bioinformatics services tailored to centrosome biology.

GO:0005813 centrosome is a central cellular component that organizes microtubule-based structures such as the spindle apparatus and changes continually during the cell-division cycle. Its core structure and peripheral material, its maturation, its TUBG1-dependent movements and its links to ciliogenesis through proteins such as CCDC81 make it a rich subject for mechanistic research. Centrosome amplification is linked to breast cancer and chromosome instability, underscoring its disease relevance. CRISPR-based knockout, point-mutation, knock-in and overexpression models, combined with imaging, proteomics and screening, provide powerful tools to test centrosome gene function. EDITGENE supports these efforts with tailored cell model and bioinformatics services for centrosome research.