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CK1ε, PERIOD2, and cancer-selective growth arrest
Cancer cells depend more than normal cells on casein kinase 1-epsilon; inhibiting CK1ε causes PERIOD2-dependent growth arrest.
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Which gene do cancer cells depend on more than normal cells here?
CSNK1E (CK1ε).
Source: Inhibition of casein kinase 1-epsilon induces cancer-cell-selective, PERIOD2-dependent growth arrest · DOI · quote verified
Do CK1ε kinase inhibitors match shRNA phenotypes?
Yes—they display the same phenotype.
Source: Inhibition of casein kinase 1-epsilon induces cancer-cell-selective, PERIOD2-dependent growth arrest · DOI · quote verified
What clock protein is a key CK1ε substrate modulating tumor cell growth?
PERIOD2.
Source: Inhibition of casein kinase 1-epsilon induces cancer-cell-selective, PERIOD2-dependent growth arrest · DOI · quote verified
What screening approach found targets?
RNAi/shRNA libraries with isogenic cell lines.
Source: Inhibition of casein kinase 1-epsilon induces cancer-cell-selective, PERIOD2-dependent growth arrest · DOI · quote verified
How broad was the kinase-focused library?
It targets 1,006 human genes including kinases.
Source: Inhibition of casein kinase 1-epsilon induces cancer-cell-selective, PERIOD2-dependent growth arrest · DOI · quote verified
How many shRNAs per gene on average?
About five different shRNA clones per gene.
Source: Inhibition of casein kinase 1-epsilon induces cancer-cell-selective, PERIOD2-dependent growth arrest · DOI · quote verified
What future chemistry do authors want?
More potent/selective CK1ε kinase inhibitors.
Source: Inhibition of casein kinase 1-epsilon induces cancer-cell-selective, PERIOD2-dependent growth arrest · DOI · quote verified
What cell-line context is used?
Cancer lines (e.g., U-2-OS) compared with fibroblast-derived normal models.
Source: Inhibition of casein kinase 1-epsilon induces cancer-cell-selective, PERIOD2-dependent growth arrest · DOI · quote verified
Why is CK1ε biologically interesting for students?
It links circadian kinase signaling to selective growth control.
Source: Inhibition of casein kinase 1-epsilon induces cancer-cell-selective, PERIOD2-dependent growth arrest · DOI · quote verified
What would larger shRNA libraries potentially reveal?
Additional potential drug targets.
Source: Inhibition of casein kinase 1-epsilon induces cancer-cell-selective, PERIOD2-dependent growth arrest · DOI · quote verified
What phenotype is cancer-cell-selective?
Growth arrest upon CK1ε inhibition.
Source: Inhibition of casein kinase 1-epsilon induces cancer-cell-selective, PERIOD2-dependent growth arrest · DOI · quote verified