{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\n GAS2L1 is a multifunctional, evolutionarily conserved protein that serves as a cytoskeletal cross‐linker by binding both filamentous actin and microtubules. Through its association with microtubule plus‐end–binding proteins (via SxIP motifs), GAS2L1 regulates microtubule stability, dynamics, and guidance along actin stress fibers (see."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": " In dividing cells, GAS2L1 localizes to centrosomal regions where it tethers microtubules and actin, thereby contributing to proper centrosome disjunction, spindle assembly, and faithful chromosome segregation; its phosphorylation by Nek2 at Ser352 is a key regulatory event that relieves its intramolecular autoinhibition to promote timely centrosome separation."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "2", "end_ref": "4"}]}, {"type": "t", "text": " In addition, GAS2L1 expression is modulated in different physiological and pathological contexts. For example, in podocytes its up‐regulation via the AGE–RAGE axis has been implicated in diabetic nephropathy"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "5"}]}, {"type": "t", "text": ", and in engineered HEK293 cells, disruption of GAS2L1 contributes to enhanced resistance to hyperosmotic stress that benefits recombinant protein production."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "6"}]}, {"type": "t", "text": " Conversely, under certain substrate conditions such as with surface‐bound microgel arrays, GAS2L1 appears to be dispensable for regulating cell adhesion and migration."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "7"}]}, {"type": "t", "text": " Moreover, transcriptional regulation studies in human embryonic stem cells have identified GAS2L1 as part of a network influenced by key pluripotency factors"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "8"}]}, {"type": "t", "text": ", while proteomic analyses in chicken embryo liver suggest a link between GAS2L1 and the regulation of oxidoreductase activity."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "9"}]}, {"type": "t", "text": " Collectively, these findings highlight GAS2L1 as a critical mediator of actin–microtubule crosstalk that ensures proper centrosome dynamics and cell division, with additional roles that may vary according to cellular context and external stress.\n "}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Matthew J Stroud, Alicja Nazgiewicz, Edward A McKenzie, et al. 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