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10:13

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Published on: July 3, 2013

Co-targeting Deregulated WNT and MAPK Signaling Pathways Limits Phenotypic Reprogramming of Intestinal Stem Cell

Silvia Palladino1, Rona Yaeger1,2

  • 1Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.

Cancer Research
|July 28, 2026
PubMed

Insights

KRAS-activated colorectal cancer growth stems from reprogrammed stem cells. Targeting WNT and MAPK pathways suppressed plasticity, leading to tumor regression in models.

Area of Science:

  • Oncology
  • Gastroenterology
  • Stem Cell Biology

Background:

  • Colorectal cancer (CRC) progression is complex, involving genetic mutations like KRAS.
  • Intestinal stem cells (Lrg5+) play a critical role in tissue regeneration and cancer development.
  • Understanding stem cell reprogramming in CRC is crucial for developing effective therapies.

Purpose of the Study:

  • To investigate how KRAS hyperactivation reprograms Lrg5+ intestinal stem cells in colorectal cancer.
  • To elucidate the molecular pathways regulating this stem cell plasticity.
  • To evaluate therapeutic strategies targeting these pathways for CRC tumor regression.

Main Methods:

  • Analysis of Lrg5+ intestinal stem cell progeny in KRAS-driven colorectal cancer models.
  • Transcriptional profiling to identify key regulatory pathways (WNT and MAPK).
  • In vitro (cell line) and in vivo (mouse model) experiments to test therapeutic interventions.

Main Results:

  • KRAS hyperactivation induces a regenerative phenotype in Lrg5+ intestinal stem cell progeny.
  • This reprogramming is controlled by a balance between WNT and MAPK signaling pathways.
  • Simultaneous targeting of WNT and MAPK pathways suppressed stem cell plasticity and induced tumor regression.

Conclusions:

  • The interplay between WNT and MAPK pathways is a key driver of colorectal cancer growth via stem cell reprogramming.
  • Targeting this dynamic plasticity offers a promising therapeutic strategy for colorectal cancer.
  • This study provides insights into CRC genomic patterns and novel targeted therapy approaches.

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