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Contributor Information

  • Name Julian Downward
  • Institute The Francis Crick Institute

Tool Details

  • Tool name: CT26 TTPKO cell line
  • Alternate names: TTP
  • Tool type: Cell Lines
  • Tool sub-type: Continuous
  • Parental cell line: CT26 ATCC-CRL-2638
  • Organism: Mouse
  • Disease: Cancer
  • Description: CRISPR/Cas tristetraprolin (TTP) Knock-out KRAS mutant colon carcinoma cell line. In some immunoresistant tumours, PD-L1 expression is upregulated by RAS activation. Via the MEK pathway, the MK2 kinase phosporylates and inhibits TTP, which negatively regulates PD-L1 expression. PD-L1 is a therapeutic target to check the immune evasion mechanism of some cancers.
  • Research area: Cancer ; Cell Cycle ; Cell Signaling & Signal Transduction
  • Additional notes: Cancer Research Technology Limited (trading research tools as has been granted a non-exclusive license to the CRISPR-Cas9 technology by ERS Genomics Ltd under the patent rights listed here: This license from ERS Genomics Ltd allows to develop and commercialise CRISPR-Cas9 modified cell lines for research use only. can provide these modified CRISPR-Cas9 cell lines to companies under a label-use only license

  • For Research Use Only

Target Details

Application Details


  • Format: Frozen
  • Growth medium: RPMI-1640 + 10% FCS. Subculture split ratio of 1:4 to 1:10 every 2-3 days.
  • Storage conditions: Liquid Nitrogen
  • Shipping conditions: Dry ice
  • Mycoplasma free: Yes
  • Biosafety level: 1


  • Available on request


  •   Coelho et al. 2017. Immunity. 47(6):1083-1099.e6. PMID: 29246442.