Abstract
Insulin-like growth factor 2 mRNA-binding proteins (IGF2BPs) are crucially implicated in the cancer progression. The current study intends to excavate and clarify the mechanisms of the key IGF2BPs in non-small cell lung cancer (NSCLC). The expression of IGF2BPs and kinesin family member 2A (KIF2A) was examined using immunohistochemistry, real-time quantitative polymerase chain reaction, and western blot in NSCLC tissue samples or cell lines. NSCLC cell viability was examined using a cell counting kit-8 assay. Cell apoptotic rate was assessed using flow cytometry analysis. The migration and invasion of H1299 cells were subject to scratch test and Transwell assays, respectively. Starbase 2.0 was used to detect the downstream factors of the IGF2BP1 protein. The binding of IGF2BP with KIF2A was detected using RNA binding protein immunoprecipitation assays. Ki-67 immunohistochemistry assay and TUNEL assays were applied for the evaluation of proliferation and apoptosis in vivo, respectively. IGF2BP1 was upregulated in NSCLC tissue samples and cells. Functionally, IGF2BP1 overexpression promoted the proliferative ability, migration, and invasiveness of H1299 cells, while inhibiting cell apoptosis in vitro. In vivo studies revealed that overexpression of IGF2BP1 promoted tumor growth of NSCLC. Mechanistically, IGF2BP1 was involved in KIF2A mRNA stabilization. KIF2A exerted the same functions as IGF2BP1 via the Wnt/β-catenin signaling. In conclusion, IGF2BP1 enhances NSCLC malignant progression by stabilizing KIF2A to modulate the Wnt/β-catenin pathway.
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Data generated during and/or analyzed during the current study are available from the corresponding authors on reasonable request.
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RZ contributed to the study conception and design. MS, LW, and DX performed the assays. LG contributed to statistical analysis. LW contributed to data presentation. MS and RZ wrote the initial manuscript. All authors read and approved the final manuscript.
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The study involving human participants was approved by the Clinical Research Ethics Committee of First Affiliated Hospital of Anhui Medical University. All patients signed written informed consent and all experimental protocols were implemented in accordance with relevant regulations. The animal experiments were approved by the animal Ethics Committee of First Affiliated Hospital of Anhui Medical University.
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Sun, M., Wang, L., Ge, L. et al. IGF2BP1 facilitates non-small cell lung cancer progression by regulating the KIF2A-mediated Wnt/β-catenin pathway. Funct Integr Genomics 24, 4 (2024). https://doi.org/10.1007/s10142-023-01275-x
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DOI: https://doi.org/10.1007/s10142-023-01275-x