Genomics

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Targeting PTPRK-RSPO3 colon tumours promotesdifferentiation and loss of stem-cell function


ABSTRACT: Colorectal cancer remains a major unmet medical need, prompting large-scale genomics efforts in the field to identify molecular drivers for which targeted therapies might be developed. We previously reported the identification of recurrent translocations in R-spondin proteins present in a subset of colorectal tumours. Here we show that targeting RSPO3 in PTPRK-RSPO3-fusion positive human tumour xenografts inhibits tumour growth and promotes differentiation. Notably, genes expressed in the stem-cell compartment of the intestine were among those most sensitive to anti-RSPO3 treatment. This observation, combined with functional assays, suggests that a stem-cell compartment drives PTPRK-RSPO3 colorectal tumour growth and indicates that the therapeutic targeting of stem-cell properties within tumours may be a clinically relevant approach for the treatment of colorectal tumors.

PROVIDER: EGAS00001001462 | EGA |

REPOSITORIES: EGA

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