Identification of differentially transcribed genes in human lymphoblastoid cells irradiated with 0.5 Gy of gamma-ray and the involvement of low dose radiation inducible CHD6 gene in cell proliferation and radiosensitivity

International Journal of Radiation Biology
H P WangP K Zhou

Abstract

To identify candidate genes specifically involved in response to low-dose irradiation in human lymphoblastoid cells; to better clarify the role of the human chromodomain helicase DNA binding protein 6 gene (CHD6), one of these genes, in cell proliferation and radiosensitivity. DNA microarray technology was used to analyse global transcriptional profile in human lymphoblastoid AHH-1 cells at 4 h after exposure to 0.5 Gy of gamma-ray. Gene expression changes were confirmed by semi-quantitative reverse transcription--polymerase chain reaction (RT-PCR) and Northern blot. RNA interfering technology was employed to knock-down the CHD6 gene in A549 cells. Colony-forming ability was used to analyse radiosensitivity. The microarray assay revealed a set of 0.5 Gy-responsive genes, including 30 up-regulated genes and 45 down-regulated genes. The up-regulated genes include a number of genes involved in: signal transduction pathways, e.g., STAT3, CAMKK2, SIRT1, CREM, MAPK3K7IP2 and GPR56; transcription or DNA-binding, e.g., CHD6, CRSP3, SNURF, SH2 domain binding protein 1 and MIZF. Some of the down-regulated genes are involved in: cytoskeleton and cell movement (WASF2, LCP1, MSN, NIPSNAP1, KIF2C); DNA replication and repair (MCM2, MCM3, MCM...Continue Reading

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Citations

Mar 30, 2007·Radiation Research·Jennifer Malone, Robert Ullrich
Dec 20, 2007·Radiation Research·Ana L FachinElza T Sakamoto-Hojo
Oct 9, 2007·Mutation Research·Fumio YatagaiFumio Hanaoka
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Aug 15, 2009·Journal of Radiation Research·Fumio YatagaiMasamitsu Honma
Jan 18, 2019·Nature Communications·Shaun MooreAaron A Goodarzi
Jan 10, 2012·Environmental and Molecular Mutagenesis·Sangeetha RajagopalanSundaresan Venkatachalam
Jul 16, 2019·Experimental Cell Research·Lena Katharina FreudenmannKlaus Dittmann

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