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AIM2 inhibits colorectal cancer cell proliferation and migration through suppression of Gli1

Menglin Xu1, Junfeng Wang2, Haoran Li2

  • 1Department of Oncology, The First Affiliated Hospital of Wannan Medical College, Wuhu 241000, China.

Aging
|December 8, 2020
PubMed

Insights

Absent in melanoma 2 (AIM2) is downregulated in colorectal cancer (CRC), promoting tumor growth and metastasis. Restoring AIM2 may offer a new therapeutic target for CRC treatment.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Colorectal cancer (CRC) is a major global health concern and a leading cause of cancer mortality.
  • The role of Absent in melanoma 2 (AIM2) in various cancers is complex and requires further elucidation.

Purpose of the Study:

  • To investigate the role of AIM2 in colorectal cancer progression.
  • To explore the molecular mechanisms underlying AIM2's function in CRC.

Main Methods:

  • Analysis of AIM2 expression in human CRC tissues.
  • In vitro studies involving AIM2 knockdown and overexpression in CRC cells.
  • Investigation of signaling pathways including Gli1, AKT, and mTOR.

Main Results:

  • AIM2 is frequently downregulated in CRC, correlating with advanced tumor stage, invasion, and metastasis.
  • AIM2 loss enhances CRC cell proliferation, migration, and epithelial-mesenchymal transition (EMT).
  • AIM2 inhibits Gli1 expression via an SMO-independent pathway and modulates the AKT/mTOR signaling cascade.

Conclusions:

  • AIM2 acts as a tumor suppressor in CRC by regulating Gli1 expression and the AKT/mTOR pathway.
  • The AIM2/AKT/mTOR/Gli1 axis represents a potential therapeutic target for colorectal cancer treatment.
Keywords:
AIM2Gli1colorectal cancermigrationproliferation

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