Apc-mutant cells act as supercompetitors in intestinal tumour initiation

Sanne M. van Neerven, Nina E. de Groot, Lisanne E. Nijman, Brendon P. Scicluna, Milou S. van Driel, Maria C. Lecca, Daniël O. Warmerdam, Vaishali Kakkar, Leandro F. Moreno, Felipe A. Vieira Braga, Delano R. Sanches, Prashanthi Ramesh, Sanne ten Hoorn, Arthur S. Aelvoet, Marouska F. van Boxel, Lianne Koens, Przemek M. Krawczyk, Jan Koster, Evelien Dekker, Jan Paul MedemaDouglas J. Winton, Maarten F. Bijlsma, Edward Morrissey, Nicolas Léveillé, Louis Vermeulen

Research output: Contribution to journalArticleAcademicpeer-review

93 Citations (Scopus)

Abstract

A delicate equilibrium of WNT agonists and antagonists in the intestinal stem cell (ISC) niche is critical to maintaining the ISC compartment, as it accommodates the rapid renewal of the gut lining. Disruption of this balance by mutations in the tumour suppressor gene APC, which are found in approximately 80% of all human colon cancers, leads to unrestrained activation of the WNT pathway1,2. It has previously been established that Apc-mutant cells have a competitive advantage over wild-type ISCs3. Consequently, Apc-mutant ISCs frequently outcompete all wild-type stem cells within a crypt, thereby reaching clonal fixation in the tissue and initiating cancer formation. However, whether the increased relative fitness of Apc-mutant ISCs involves only cell-intrinsic features or whether Apc mutants are actively involved in the elimination of their wild-type neighbours remains unresolved. Here we show that Apc-mutant ISCs function as bona fide supercompetitors by secreting WNT antagonists, thereby inducing differentiation of neighbouring wild-type ISCs. Lithium chloride prevented the expansion of Apc-mutant clones and the formation of adenomas by rendering wild-type ISCs insensitive to WNT antagonists through downstream activation of WNT by inhibition of GSK3β. Our work suggests that boosting the fitness of healthy cells to limit the expansion of pre-malignant clones may be a powerful strategy to limit the formation of cancers in high-risk individuals.
Original languageEnglish
Pages (from-to)436-441
Number of pages6
JournalNATURE
Volume594
Issue number7863
Early online date2021
DOIs
Publication statusPublished - 17 Jun 2021

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