{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nTCEAL7 has emerged as a critical tumor suppressor gene that is frequently downregulated in multiple cancer types. In ovarian cancer, for example, its expression is lost as a consequence of promoter hypermethylation and even inherited alterations, events that contribute to malignant transformation by weakening cell‐death regulatory signals and facilitating unchecked cellular growth. Moreover, enforced re-expression of TCEAL7 in cancer cell models has been shown to induce cell death and limit colony formation, underscoring its importance in maintaining normal cellular homeostasis."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "1", "end_ref": "3"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nMechanistically, TCEAL7 plays a pivotal role in modulating key oncogenic pathways. It represses cyclin D1 expression by associating with Myc-responsive E-box elements in the cyclin D1 promoter, thereby limiting Myc activity and dampening proliferative signals—a function further supported by observations in non-small cell lung cancer where its reduced expression correlates with cyclin D1 overexpression. In addition, diminished TCEAL7 levels result in enhanced nuclear factor-κB (NF-κB) transcriptional activity, leading to the upregulation of a spectrum of pro-proliferative, pro-angiogenic, and anti-apoptotic genes. In alternative lengthening of telomeres (ALT) cells, elevated TCEAL7 further contributes to the suppression of c-Myc-driven telomerase (hTERT) expression, indicating its broader influence on cell cycle regulation and replicative capacity."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "2"}, {"type": "fg_fs", "start_ref": "4", "end_ref": "6"}]}, {"type": "t", "text": "\n"}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nTCEAL7’s tumor suppressive functions are further modulated by interactions with non-coding RNAs and microRNAs, which add an additional layer of regulation with significant clinical ramifications. In glioblastoma, hypoxic cells secrete exosomal miR-301a that directly targets TCEAL7, thereby activating the Wnt/β-catenin pathway and contributing to radioresistance. Similarly, in gastric cancer, a regulatory axis involving HAND2-AS1, miR-769-5p, and TCEAL7 has been implicated in tumor progression, with expression levels of TCEAL7 holding potential prognostic value. These findings highlight TCEAL7 as a multifaceted regulator whose loss not only disrupts cell cycle control and apoptosis but also impacts signaling cascades that govern response to therapy."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "7", "end_ref": "9"}]}, {"type": "t", "text": "\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Jeremy Chien, Julie Staub, Rajeswari Avula, et al. 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