Japanese Journal of Ophthalmology

, Volume 51, Issue 6, pp 412–416

Proteomic Analysis of Human Lens Epithelial Cells Exposed to Microwaves

  • Hong-Wu Li
  • Ke Yao
  • Hong-Ying Jin
  • Li-Xia Sun
  • De-Qiang Lu
  • Yi-Bo Yu
LABORATORY INVESTIGATION
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Abstract

Purpose

To study proteomic changes in human lens epithelial cells (HLECs) exposed to 1800-MHz Global System for Mobile Communication (GSM)-like microwaves.

Methods

In three separate experiments, HLECs were exposed and sham-exposed (six dishes each) to 1800-MHz GSM-like radiation for 2 h. The specific absorption rates were 1.0, 2.0, or 3.5 W/kg. Immediately after radiation, the proteome was extracted from the HLECs. Immobilized pH gradient two-dimensional polyacrylamide gel electrophoresis(2-DE; silver staining) and PDQuest 2-DE analysis software were used to separate and analyze the proteome of exposed and sham-exposed HLECs. Four differentially expressed protein spots were selected and identified by using electrospray ionization tandem mass spectrometry (ESI-MS-MS).

Results

When the protein profiles of exposed cells were compared with those of sham-exposed cells, four proteins were detected as upregulated. After analysis by ESI-MS-MS and through a database search, heat-shock protein (HSP) 70 and heterogeneous nuclear ribonucleoprotein K (hnRNP K) were determined to be upregulated in the exposed cells.

Conclusions

Two-dimensional polyacrylamide gel electrophoresis combined with mass spectrometry may be a powerful tool for screening potential electromagnetic-reaction protein markers. HSP70 and hnRNP K are involved in the stress reaction of HLECs exposed to microwaves. These cell responses are nonthermal effects of the electromagnetic field. Jpn J Ophthalmol 2007;51:412–416 © Japanese Ophthalmological Society 2007

Key words

electrophoresis human lens epithelial cells microwave proteomics two-dimensional polyacrylamide gel electrophoresis 

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Copyright information

© Japanese Ophthalmological Society 2007

Authors and Affiliations

  • Hong-Wu Li
    • 1
  • Ke Yao
    • 1
  • Hong-Ying Jin
    • 1
  • Li-Xia Sun
    • 1
  • De-Qiang Lu
    • 2
  • Yi-Bo Yu
    • 1
  1. 1.Eye Center, Affiliated Second Hospital, College of MedicineZhejiang UniversityHangzhouChina
  2. 2.Bioelectromagnetic Laboratory, College of MedicineZhejiang UniversityHangzhouChina
  3. 3.Eye Center, Affiliated Second Hospital, College of MedicineZhejiang UniversityHangzhouChina

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