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13.02.2019 | Original Article | Ausgabe 4/2019

Irish Journal of Medical Science (1971 -) 4/2019

Overexpression of apoptosis-related protein, survivin, in fibroblasts from patients with systemic sclerosis

Zeitschrift:
Irish Journal of Medical Science (1971 -) > Ausgabe 4/2019
Autoren:
Mohammad Bagher Mahmoudi, Ehsan Farashahi Yazd, Farhad Gharibdoost, Mohammad Hasan Sheikhha, Elham Karimizadeh, Ahmadreza Jamshidi, Mahdi Mahmoudi
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Abstract

Background/objectives

Recent studies suggest that, in addition to activation and hypersecretion of matrix components, fibroblasts from patients with systemic sclerosis (SSc) are resistant to apoptosis. Previous studies have shown that survivin, a member of inhibition of apoptosis (IAP) family, plays an important role in apoptosis resistance. Accordingly, we decided to study the expression of the most important members of IAP family in SSc fibroblasts, which can block apoptosis either by binding and inhibiting caspases or through caspase-independent mechanisms.

Method

Skin biopsy samples were obtained from 19 patients with diffuse cutaneous SSc (DcSSc) and 16 healthy controls. Dermal fibroblasts were cultured and the total RNA was isolated from cells followed by cDNA synthesis. Real-time PCR was performed using SYBR Green PCR master mix and specific primers for cIAP1, cIAP2, XIAP, and Survivin mRNA quantification.

Results

A significantly increased expression level of Survivin was observed in fibroblasts from SSc patients compared to controls (2.26-fold, P = 0.04). However, mRNA expression of cIAP1, cIAP2, and XIAP did not change significantly between cases and controls.

Conclusions

Our results showed that survivin is upregulated in SSc skin fibroblast which may lead to resistance to apoptosis. Further studies should be performed to reveal the role of survivin in apoptosis pathway of SSc fibroblasts.

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