Chinese Journal of Dermatology 2017;50(3):207-210

doi:10.3760/cma.j.issn.0412-4030.2017.03.013

Differences in expression of Ras1, Rac1 and Rho1 genes between yeast and hyphal phases of Trichosporon asahii

Shanshan CHEN ; Jianfeng ZHOU ; Yong LIAO ; Haitao LI ; Ruili WANG ; Gen BA ; Xuelian LYU ; Rongya YANG

Keywords

Trichosporon; Monomeric GTP-binding proteins; Trichosporon asahii; Ras1; Rac1; Rho1; Yeast phase; Hyphal phase

Country

China

Language

Chinese

Abstract

Objective To investigate differences in the expression of Ras 1,Rac1 and Rho1 genes between yeast and hyphal phases of Trichosporon asahii (T.asahii),and to explore their roles in the formation of hyphae.Methods The yeast phase and hyphal phase of T.asahii were cultured and served as yeast phase group and hyphal phase group respectively.Total RNA was extracted from the 2 groups,and real -time fluorescence-based quantitative PCR (RT-PCR) was performed to measure the mRNA expression of Ras1,Rac1 and Rho1.Results The hyphal formation rate was significantly lower in the yeast phase group than in the hyphal phase group (0.40％ ± 0.53％ vs.99.33％ ± 0.57％,t =13.93,P ＜ 0.05).When the mRNA expression of Ras1,Rac1 and Rho1 in the yeast phase group was all set as 1,that in the hyphal phase group was 25.17 ± 10.99,16.81 ± 7.80,42.61 ± 18.50,respectively,with significant differences between the two groups in the three parameters (t =3.81,3.51,3.90,respectively,all P ＜ 0.05).Conclusion Ras1,Rac1 and Rho1 genes may participate in the regulation of hyphal formation in T.asahii.