PMID: 16533435Mar 15, 2006Paper

Analysis of differentially expressed genes in fetal skin of scarless and scar-forming periods of gestational rats

Chinese Journal of Traumatology = Zhonghua Chuang Shang Za Zhi
Wei ChenZhi-Yong Sheng

Abstract

To study the differences of gene expression between earlier gestational skin and later gestational skin of rats with the aids of single primer amplification (SPA) and high-density oligonucleotide DNA array to understand the molecular mechanism of scarless healing. Total RNAs were isolated from fetal rat skin of the scarless (E15) and scar-forming (E18) periods of gestation (term = 21.5 days). The RNAs from earlier gestational skin (EGS) and later gestational skin (LGS) were both reversely transcribed to cDNAs, then labeled with the incorporation of fluorescent dCTP for preparing the hybridization probes by SPA method. The mixed probes were then hybridized to the oligonucleotide DNA arrays which contained 5,705 probes representing 5,705 rat genes. After highly stringent washing, these DNA arrays were scanned for fluorescent signals to display the differentially expressed genes between the 2 groups of skin. Among 5,705 rat genes, there were 53 genes (0.93 percent) with differentially expressed levels between EGS and LGS groups, 27 genes, including fibroblast growth factor 2 (FGF2) and follistatin were up-regulated (0.47%) and 26 genes were down-regulated (0.46%) in fetal skin during scarless period versus scar-forming period. Hig...Continue Reading

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