{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\n Kazrin is an evolutionarily conserved cytoplasmic protein that plays multifunctional roles in epithelial biology by modulating cell–cell adhesion, cytoskeletal organization, differentiation, and apoptosis. In the epidermis, kazrin interacts with plakin family proteins—most notably periplakin—to participate in the assembly of desmosomes and the cornified envelope, which are essential for maintaining tissue integrity and barrier function."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "3"}]}, {"type": "t", "text": " Functional studies in keratinocytes have shown that kazrin regulates cell morphology and intercellular junction assembly—its overexpression leads to altered cell shape, reorganization of keratin filaments and actin cytoskeleton, and promotion of terminal differentiation, at least in part through modulation of Rho GTPase signaling."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}]}, {"type": "t", "text": " In addition, certain isoforms such as kazrin F have been implicated in the regulation of cell survival; knockdown of kazrin F triggers apoptosis via interactions with apoptotic regulators like ARC and Bax."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "4"}]}, {"type": "t", "text": " Beyond its role in normal epithelial function, kazrin has been linked to disease pathogenesis. For instance, in oral squamous cell carcinoma, alterations in kazrin messenger RNA stability—mediated by the RNA binding protein FUS—contribute to malignant cell behaviors"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "5"}]}, {"type": "t", "text": ", and in hematologic neoplasms, KAZN has been identified as a novel translocation partner with PDGFRB."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "6"}]}, {"type": "t", "text": " Moreover, genetic association studies have revealed that polymorphisms in KAZN are linked with endometriosis‐related infertility"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "7"}]}, {"type": "t", "text": ", while epigenomic analyses have implicated altered regulation of KAZN in inflammatory and infectious conditions such as tuberculosis and respiratory syncytial virus infection."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "8", "end_ref": "10"}]}, {"type": "t", "text": "\n "}]}, {"type": "t", "text": "\n "}, {"type": "p", "children": [{"type": "t", "text": "\n Collectively, these studies support a model in which kazrin functions as a dynamic regulator of the cytoskeletal and adhesive apparatus in epithelial cells, with additional roles in modulating apoptosis and gene stability—features that may be exploited during disease development and progression.\n "}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Karen R Groot, Lisa M Sevilla, Kazunori Nishi, et al. 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