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Mitochondrial proteomic analysis of isopsoralen protection against oxidative damage in human lens epithelial cells

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Abstract

Objective

To investigate the protective effects of the natural medicinal monomer isopsoralen (ISR) with estrogenic activity against oxidative damage in human lens epithelial cells B3 (HLE-B3) caused by hydrogen peroxide (H2O2) and to pursue the possible mitochondrial proteomic regularity of the protective effects.

Methods

HLE-B3 cells were treated with H2O2 (300 μ mol/L), β-estradiol (E2: 10−8 mol/L) and H2O2, ISR (10−5 mol/L) and H2O2, or left untreated. Altered expressions of all mitochondrial proteins were analyzed by protein array and surfaceenhanced laser desorption ionization time of flight mass spectrometry (SELDI-TOF-MS). The mass/charge (m/z) ratios of each peak were tested by the Kruskal-Wallis rank sum test, and the protein peak value of the m/z ratio for each treatment by pair comparison was analyzed with the Nemenyi test.

Results

H2O2 up-regulated the expressions of two protein spots (with m/z of 6532 and 6809). E2 mitigated the oxidative damage, and the expression of one protein spot (m/z 6532) was down-regulated. In contrast, ISR down-regulated both of protein spots (m/z 6532 and 6809).

Conclusions

ISR could effectively inhibit H2O2-induced oxidative damage in HLE-B3 cells. The protein spot at m/z of 6532 might be the target spot of ISR against oxidative damage induced by H2O2.

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Correspondence to Xiu-rong Huang  (黄秀榕).

Additional information

Supported by the Foundation of Fujian Province Health Department Fund (No.2009-1-30) and Fujian Provincie Department of Education Issues (No. JA10176)

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Feng, Cy., Huang, Xr., Qi, Mx. et al. Mitochondrial proteomic analysis of isopsoralen protection against oxidative damage in human lens epithelial cells. Chin. J. Integr. Med. 18, 529–533 (2012). https://doi.org/10.1007/s11655-012-1144-5

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  • DOI: https://doi.org/10.1007/s11655-012-1144-5

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