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Dragon (repulsive guidance molecule b, RGMb) is a novel gene that promotes colorectal cancer growth

Ying Shi1, Guo-Bin Chen1, Xiao-Xiao Huang1

  • 1Department of Gastroenterology, Zhongshan Hospital, Xiamen University, Xiamen, Fujian Province, China.

Oncotarget
|June 2, 2015
PubMed

Insights

Dragon, a repulsive guidance molecule, promotes colorectal cancer (CRC) growth by activating bone morphogenetic protein (BMP) signaling. This finding reveals Dragon as a potential therapeutic target for treating CRC.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Colorectal cancer (CRC) is a leading cause of cancer death, with poorly understood molecular drivers.
  • Dragon (RGMb), a repulsive guidance molecule, acts as a bone morphogenetic protein (BMP) co-receptor.
  • The role of Dragon in colorectal cancer development remains undefined.

Purpose of the Study:

  • To investigate the role of Dragon in colorectal cancer initiation, growth, and metastasis.
  • To elucidate the molecular pathways through which Dragon influences colorectal cancer progression.

Main Methods:

  • Dragon expression analysis in colon cancer tissues from a CAC mouse model and human patients.
  • In vitro proliferation assays using CT26.WT and CMT93 colon cancer cells.
  • In vivo tumor growth assessment in a xenograft mouse model.
  • Analysis of BMP4-Smad1/5/8 and Erk1/2 signaling pathways.

Main Results:

  • Dragon expression is significantly increased in colon cancer tissues compared to controls.
  • Dragon overexpression enhances colon cancer cell proliferation and accelerates tumor growth.
  • Dragon mediates its effects on colorectal cancer via the BMP4-Smad1/5/8 and Erk1/2 pathways.

Conclusions:

  • Dragon is a novel gene that promotes colorectal cancer growth.
  • Dragon's pro-tumorigenic activity is linked to BMP signaling.
  • Dragon represents a potential therapeutic target for colorectal cancer treatment.
Keywords:
BMPErk1/2Smad1/5/8colorectal cancerdragonproliferation

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