Many faces and functions of GSKIP: a temporospatial regulation view

Wu, Nian-Siou; Lin, Yifan; Chu, Inhou; Ko, Huey-Jiun; Hong, Yi‐Ren

doi:10.1016/j.cellsig.2022.110391

Cited by 7 publications

(1 citation statement)

References 164 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This protein PKA/GSKIP/GSK3β axis is involved in Tau phosphorylation for neurodegenerative diseases, such as Alzheimer’s disease (Ko et al 2019 ). In addition, GSKIP was investigated using bioinformatics tools, site-directed mutagenesis, and yeast two-hybrid methods and eventually classified into simple-form and composite-form variants in an evolutionary context (Chou et al 2018 ; Tsai et al 2022 ; Wu et al 2022 ).…”

Section: Introductionmentioning

confidence: 99%

GSKIP modulates cell aggregation through EMT/MET signaling rather than differentiation in SH-SY5Y human neuroblastoma cells

Tsai

Chiou

et al. 2023

J. Cell Commun. Signal.

Self Cite

View full text Add to dashboard Cite

GSK3β interacting protein (GSKIP) is a small A-kinase anchor protein previously reported to mediate the N-cadherin/β-catenin pool for differentiation in SH-SY5Y cells through overexpression of GSKIP to present the neuron outgrowth phenotype. To further investigate how GSKIP functions in neurons, CRISPR/Cas9 technology was utilized to knock out GSKIP (GSKIP-KO) in SH-SY5Y. Several GSKIP-KO clones resulted in an aggregation phenotype and reduced cell growth without retinoic acid (RA) treatment. However, neuron outgrowth was still observed in GSKIP-KO clones treated with RA. The GSKIP-KO clones exhibited an aggregation phenotype through suppression of GSK3β/β-catenin pathways and cell cycle progression rather than cell differentiation. Gene set enrichment analysis indicated that GSKIP-KO was related to epithelial mesenchymal transition/mesenchymal epithelial transition (EMT/MET) and Wnt/β-catenin/cadherin signaling pathways, suppressing cell migration and tumorigenesis through the inhibition of Wnt/β-catenin mediated EMT/MET. Conversely, reintroduction of GSKIP into GSKIP-KO clones restored cell migration and tumorigenesis. Notably, phosphor-β-catenin (S675) and β-catenin (S552) but not phosphor-β-catenin (S33/S37/T41) translocated into the nucleus for further gene activation. Collectively, these results suggested that GSKIP may function as an oncogene to form an aggregation phenotype for cell survival in harsh environments through EMT/MET rather than differentiation in the GSKIP-KO of SH-SY5Y cells. Graphical abstract

show abstract