MKNK1 and MKNK2 Knockout HeLa Cell Line

The choice depends on whether you are studying combined MKNK1/MKNK2 (MNK1/MNK2) function for phospho-eIF4E generation or distinguishing MNK-mediated translation regulation from MNK-independent processes. The Double Knockout line is uniquely valuable for asking whether MNK-mediated eIF4E phosphorylation is required for these processes — MNK1 and MNK2 are functionally redundant kinases that phosphorylate eIF4E at S209 downstream of MAPK pathways (ERK activates MNK1; p38 activates both). Single MNK1 or MNK2 KO shows minimal effect on phospho-eIF4E because of paralog compensation; double KO eliminates phospho-eIF4E entirely. Single-MNK rescue (MNK1 alone or MNK2 alone) in the double knockout enables paralog-specific functional dissection. For translation regulation and cancer research, the EDITGENE MKNK1 & MKNK2 Double Knockout in HeLa is the gold-standard genetic tool — combined loss is essential to abolish phospho-eIF4E, the well-characterized cancer-relevant translation control mark. Single-MNK rescue is the gold-standard experimental design for distinguishing paralog-specific functions. The double knockout is a critical specificity control for tomivosertib (eFT508, a clinical MNK1/2 inhibitor in cancer trials), BAY 1143269, and other MNK-targeting compounds. Phospho-eIF4E supports translation of oncoprotein mRNAs (MYC, MCL1, BCL2) and is a validated cancer target.

Primary applications: • Phospho-eIF4E elimination: phospho-eIF4E (S209) Western blot — MNK1/2 double KO completely eliminates phospho-eIF4E, distinct from single KOs. • Single-MNK rescue: re-introduction of MNK1 alone or MNK2 alone in the double knockout enables paralog-specific functional dissection — the gold-standard experimental design. • Cap-dependent translation studies: polysome profiling and translation efficiency analysis of MNK-dependent oncoprotein mRNAs (MYC, MCL1, BCL2). • Tomivosertib specificity: critical genetic control for tomivosertib (eFT508), BAY 1143269, and other MNK inhibitors in clinical cancer development. EDITGENE recommends this double knockout as the gold-standard genetic tool for MNK1/2-targeted research and as the specificity control for MNK-targeted clinical compound development.

Yes, and rescue experiments are uniquely powerful in this double knockout: • Single-MNK rescue: re-introduction of MNK1 alone or MNK2 alone in the double knockout enables paralog-specific functional dissection — the gold-standard experimental design for redundant MAPK-activated kinases. • Construct design: use codon-modified MKNK1 or MKNK2 sequences with small C-terminal tags (FLAG, HA). MNK1 and MNK2 have N-terminal eIF4G-binding region, central kinase domain, and C-terminal MAPK-binding region — preserve all elements. • Kinase-dead rescue: K78R (MNK1) or K113R (MNK2) ATP-binding lysine mutations abolish catalytic activity for paralog-specific catalytic dissection. • Constitutively active rescue: T197E/T202E (MNK1) phospho-mimetic mutations in the activation loop generate constitutively active MNKs for gain-of-function studies. • Functional readout: rescue should restore phospho-eIF4E (S209) levels and downstream cap-dependent translation of MNK-target mRNAs. HeLa transduces efficiently with lentivirus and supports systematic paralog-specific rescue experiments.