EMBO Molecular Medicine (Aug 2024)

Novel immunotherapeutics against LGR5 to target multiple cancer types

  • Hung-Chang Chen,
  • Nico Mueller,
  • Katherine Stott,
  • Chrysa Kapeni,
  • Eilidh Rivers,
  • Carolin M Sauer,
  • Flavio Beke,
  • Stephen J Walsh,
  • Nicola Ashman,
  • Louise O’Brien,
  • Amir Rafati Fard,
  • Arman Ghodsinia,
  • Changtai Li,
  • Fadwa Joud,
  • Olivier Giger,
  • Inti Zlobec,
  • Ioana Olan,
  • Sarah J Aitken,
  • Matthew Hoare,
  • Richard Mair,
  • Eva Serrao,
  • James D Brenton,
  • Alicia Garcia-Gimenez,
  • Simon E Richardson,
  • Brian Huntly,
  • David R Spring,
  • Mikkel-Ole Skjoedt,
  • Karsten Skjødt,
  • Marc de la Roche,
  • Maike de la Roche

DOI
https://doi.org/10.1038/s44321-024-00121-2
Journal volume & issue
Vol. 16, no. 9
pp. 2233 – 2261

Abstract

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Abstract We have developed and validated a highly specific, versatile antibody to the extracellular domain of human LGR5 (α-LGR5). α-LGR5 detects LGR5 overexpression in >90% of colorectal cancer (CRC), hepatocellular carcinoma (HCC) and pre-B-ALL tumour cells and was used to generate an Antibody-Drug Conjugate (α-LGR5-ADC), Bispecific T-cell Engager (α-LGR5-BiTE) and Chimeric Antigen Receptor (α-LGR5-CAR). α-LGR5-ADC was the most effective modality for targeting LGR5+ cancer cells in vitro and demonstrated potent anti-tumour efficacy in a murine model of human NALM6 pre-B-ALL driving tumour attrition to less than 1% of control treatment. α-LGR5-BiTE treatment was less effective in the pre-B-ALL cancer model yet promoted a twofold reduction in tumour burden. α-LGR5-CAR-T cells also showed specific and potent LGR5+ cancer cell killing in vitro and effective tumour targeting with a fourfold decrease in pre-B-ALL tumour burden relative to controls. Taken together, we show that α-LGR5 can not only be used as a research tool and a biomarker but also provides a versatile building block for a highly effective immune therapeutic portfolio targeting a range of LGR5-expressing cancer cells.

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