Abstract
Wilms tumor gene on the X chromosome (WTX) is a putative tumor suppressor gene in Wilms tumor, but its expression and functions in other tumors are unclear. Colorectal cancer (CRC) is the third leading cause of cancer-related deaths in women and the second leading cause in men in the United States. We demonstrated that WTX frequently lost in CRC which was highly correlated with cell proliferation, tumor invasion and metastasis. Mechanistically, WTX loss disrupts the interaction between RhoGDIα and CDC42 by losing of the binding with RhoGDIα and triggers the activation of CDC42 and its downstream cascades, which promotes CRC development and liver metastasis. The aberrant upregulation of miR-20a/miR-106a were identified as the reason of WTX loss in CRC both in vivo and in vitro. These study defined the mechanism how miR-20a/miR-106a-mediated WTX loss regulates CRC progression and metastasis, and provided a potential therapeutic target for preventing CRC progression.
Publication types
-
Research Support, Non-U.S. Gov't
-
Retracted Publication
MeSH terms
-
Adaptor Proteins, Signal Transducing / genetics*
-
Adaptor Proteins, Signal Transducing / metabolism
-
Animals
-
Cell Line, Tumor
-
Colonic Neoplasms / genetics*
-
Colonic Neoplasms / metabolism
-
Colonic Neoplasms / pathology
-
Disease Progression
-
Female
-
Gene Expression Profiling
-
Gene Expression Regulation, Neoplastic
-
HCT116 Cells
-
HT29 Cells
-
Humans
-
Male
-
Mice, Inbred BALB C
-
Mice, Nude
-
MicroRNAs / genetics*
-
Middle Aged
-
Signal Transduction / genetics
-
Transplantation, Heterologous
-
Tumor Suppressor Proteins / genetics*
-
Tumor Suppressor Proteins / metabolism
-
cdc42 GTP-Binding Protein / genetics*
-
cdc42 GTP-Binding Protein / metabolism
-
rho Guanine Nucleotide Dissociation Inhibitor alpha / genetics*
-
rho Guanine Nucleotide Dissociation Inhibitor alpha / metabolism
Substances
-
AMER1 protein, human
-
Adaptor Proteins, Signal Transducing
-
MIRN106 microRNA, human
-
MIRN20a microRNA, human
-
MicroRNAs
-
Tumor Suppressor Proteins
-
rho Guanine Nucleotide Dissociation Inhibitor alpha
-
CDC42 protein, human
-
cdc42 GTP-Binding Protein