Abstract:
:A cDNA coding for rat IL-5 was obtained by RT-PCR from total spleen RNA. With the exception of a single a.a. replacement at position 85 (L-P), it is identical to the published sequence obtained by retroviral gene transfer. This cDNA was used to express biologically active recombinant IL-5 in E. coli and in insect cells using a baculovirus system. Rat IL-5 is more active on B13, an IL-5 dependent cell line, when produced in insect cells (specific activity 1.47 x 10(11)UI/mg compared to 4.28 x 10(6)UI/mg). This increased activity seems to be associated with the presence of IL-5 homodimers in recombinant protein preparations. A rabbit antiserum raised against recombinant bacterial IL-5 specifically inhibited B13 proliferation induced by bacterial and baculoviral IL-5. The availability of such reagents should facilitate studying the role of IL-5 in different infectious diseases, experimental allergic encephalomyelitis and in transplantation biology where the rat represents a more suitable model than mice.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Pierrot C,Cocude C,Cêtre C,Godin C,Lafitte S,Capron M,Khalife Jdoi
10.1006/bbrc.1998.9843subject
Has Abstractpub_date
1998-12-30 00:00:00pages
756-60issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(98)99843-6journal_volume
253pub_type
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