These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: ALPK2 is crucial for luminal apoptosis and DNA repair-related gene expression in a three-dimensional colonic-crypt model.
    Author: Yoshida Y, Tsunoda T, Doi K, Fujimoto T, Tanaka Y, Ota T, Ogawa M, Matsuzaki H, Kuroki M, Iwasaki A, Shirasawa S.
    Journal: Anticancer Res; 2012 Jun; 32(6):2301-8. PubMed ID: 22641666.
    Abstract:
    BACKGROUND: Oncogenic KRAS signaling is dysregulated in a three-dimensional (3D)-specific manner in human colorectal cancer (CRC) HCT116 cells. However, the identity of the crucial genes which are down-regulated through oncogenic KRAS in 3D cultures remains unclear. MATERIALS AND METHODS: We established a specific anti-alpha-kinase 2 (ALPK2) antibody and addressed the ALPK2 function in HKe3 cells, which are HCT116 cells with a disruption in oncogenic KRAS, in a 3D colonic-crypt model. RESULTS: In HKe3 cells grown in 3D culture, ALPK2 siRNA inhibited luminal apoptosis and reduced the expression of cleaved caspase-3. Furthermore, ALPK2 siRNA reduced the expression of DNA repair genes. Reduced expression of ALPK2 mRNA was found to be correlated with clinical colorectal adenomas in a public dataset of gene expression analyses. CONCLUSION: ALPK2, down-regulated by oncogenic KRAS, is crucial for luminal apoptosis and expression of DNA repair-related genes, possibly in the transition of normal colonic crypt to adenoma.
    [Abstract] [Full Text] [Related] [New Search]