期刊
FISH & SHELLFISH IMMUNOLOGY
卷 41, 期 2, 页码 294-299出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.fsi.2014.09.013
关键词
Heat shock protein; Thermal stress; Cytoplasmic protection; Rohu
资金
- DST, Govt. of India
- Australian Educational International
To understand the function of HSP70 of Labeo rohita (LrHSP70) in cellular protection, LrHSP70 ORF cDNA was inserted into the plasmid of pET-32a(+) or pEGFP-L1. Then, the recombinant plasmids were transformed or transfected into Escherichia coli cells, mouse myeloma cells (MPC-11) or fish hepatoma cells (PLHC-1). Western blot results revealed that LrHSP70 was expressed in E. coli cells and molecular weight was estimated to be 70 kDa. In cells, LrHSP70 was over-expressed following thermal or cold stress. Results revealed that LrHSP70 protected prokaryotic cells against thermal or cold extremes as well as played the same role in MPC-11 and PLHC-1 cells. After heat treatment at 42 degrees C for 1 h, the viability of the cell was declined considerably. PLHC-1 cells with pEGFP-L1/LrHSP70 exhibited a higher survival rate (50%) than wild-type cells (18%) or cells with only pEGFP-L1 (21.2%). When the time lag extended to 2 h, the survival rates were 30%, 3.4% and 53% respectively. The present study revealed that LrHSP70 plays an important role in response to thermal and cold stress in fish. (C) 2014 Elsevier Ltd. All rights reserved.
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