FOS-like antigen 1 is highly expressed in human psoriasis tissues and promotes the growth of HaCaT cells in vitro

Zhu,Wu; Li,Jing; Su,Juan; Li,Jie; Li,Jinmao; Deng,Bo; Shi,Qian; Zhou,Yanhong; Chen,Xiang

doi:10.3892/mmr.2014.2509

FOS-like antigen 1 is highly expressed in human psoriasis tissues and promotes the growth of HaCaT cells in vitro

Authors:
- Wu Zhu
- Jing Li
- Juan Su
- Jie Li
- Jinmao Li
- Bo Deng
- Qian Shi
- Yanhong Zhou
- Xiang Chen
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Affiliations: Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China, Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China, Molecular Genetics Laboratory, Cancer Research Institute, Central South University, Changsha, Hunan 410078, P.R. China
Published online on: August 21, 2014 https://doi.org/10.3892/mmr.2014.2509
Pages: 2489-2494

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Abstract

Psoriasis is a multifactorial disease and the mechanisms involved in its pathogenesis remain to be elucidated. FOS‑like antigen 1 (Fra‑1) is a proto‑oncogene. It is a negative inhibitor of activator protein‑1 activity and possesses transforming activity. The effect of and possible mechanisms underlying Fra‑1 in psoriasis remain to be elucidated. In the present study, western blot analysis and reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) techniques were used to identify differentially expressed Fra‑1 in psoriatic and in normal control tissues. Compared with the control samples, the expression of normalized Fra‑1 genes in psoriasis was 12.6 times higher. Western blot analysis was used to assess the protein levels of Fra‑1. The results demonstrated that the protein expression of Fra-1 was high in tissues affected by psoriasis. This also corresponded with the results of RT‑qPCR. Fra‑1‑stable expressing HaCaT/Fra‑1 or control HaCaT/vector cell lines were then generated to elucidate the function of Fra‑1 in the growth of HaCaT cells. The results demonstrated that Fra‑1 promoted the growth of HaCaT cells in vitro by arresting the cell cycle and inhibiting cell apoptosis. These results suggested that Fra‑1 may be important in psoriasis.

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