Quantification of Atlantic salmon type-I interferon using an Mx1 promoter reporter gene assay

A Johansen, B Collet, E Sandaker, C J Secombes, J B Jorgensen

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

We here describe an assay for the detection of interferon-like activity in Atlantic salmon based on the transient transfection of chinook salmon embryo cells (CHSE-214 cells) with a rainbow trout Mx1 promoter linked to a luciferase reporter. A beta-galactosidase gene under the control of a constitutively expressed beta-actin promoter was used as a transfection standard. and luciferase and beta gal expression were measured by a commercially available kit. Interferon containing supernatants from poly I:C- or CpG-stimulated leucocytes added to transfected CHSE-cells induced high luciferase expression (>60-fold induction compared to supernatants from non-stimulated cells). There was no response to supernatants from LPS- and ConA/PMA-stimulated leucocytes, demonstrating the specificity for type I interferon-like activity. Duplicate samples analysed using a cell protection assay for detection of antiviral activity correlated well with levels obtained by the Mx1 promoter reporter gene assay (R-2=0.97), confirming the reporter assay as a reliable substitute for the standard antiviral assay. The Mx reporter gene assay also has advantages in terms of sensitivity, high dynamic range and reliability over the conventional cell protection assay. (C) 2003 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)173-184
Number of pages12
JournalFish & Shellfish Immunology
Volume16
DOIs
Publication statusPublished - 2004

Keywords

  • Atlantic salmon
  • transient transfection
  • Mx promoter
  • CHSE-214 cell line
  • CpG
  • poly I : C
  • interferon
  • leucocytes
  • DOUBLE-STRANDED-RNA
  • NECROSIS VIRUS
  • CPG OLIGODEOXYNUCLEOTIDES
  • ANTIVIRAL ACTIVITY
  • EGTVED VIRUS
  • CELLS
  • PROTEIN
  • LEUKOCYTES
  • EXPRESSION
  • CLONING

Cite this

Quantification of Atlantic salmon type-I interferon using an Mx1 promoter reporter gene assay. / Johansen, A ; Collet, B ; Sandaker, E ; Secombes, C J ; Jorgensen, J B .

In: Fish & Shellfish Immunology, Vol. 16, 2004, p. 173-184.

Research output: Contribution to journalArticle

Johansen, A ; Collet, B ; Sandaker, E ; Secombes, C J ; Jorgensen, J B . / Quantification of Atlantic salmon type-I interferon using an Mx1 promoter reporter gene assay. In: Fish & Shellfish Immunology. 2004 ; Vol. 16. pp. 173-184.
@article{13b2461ad7e3439fb2d64b57db0c254f,
title = "Quantification of Atlantic salmon type-I interferon using an Mx1 promoter reporter gene assay",
abstract = "We here describe an assay for the detection of interferon-like activity in Atlantic salmon based on the transient transfection of chinook salmon embryo cells (CHSE-214 cells) with a rainbow trout Mx1 promoter linked to a luciferase reporter. A beta-galactosidase gene under the control of a constitutively expressed beta-actin promoter was used as a transfection standard. and luciferase and beta gal expression were measured by a commercially available kit. Interferon containing supernatants from poly I:C- or CpG-stimulated leucocytes added to transfected CHSE-cells induced high luciferase expression (>60-fold induction compared to supernatants from non-stimulated cells). There was no response to supernatants from LPS- and ConA/PMA-stimulated leucocytes, demonstrating the specificity for type I interferon-like activity. Duplicate samples analysed using a cell protection assay for detection of antiviral activity correlated well with levels obtained by the Mx1 promoter reporter gene assay (R-2=0.97), confirming the reporter assay as a reliable substitute for the standard antiviral assay. The Mx reporter gene assay also has advantages in terms of sensitivity, high dynamic range and reliability over the conventional cell protection assay. (C) 2003 Elsevier Ltd. All rights reserved.",
keywords = "Atlantic salmon, transient transfection, Mx promoter, CHSE-214 cell line, CpG, poly I : C, interferon, leucocytes, DOUBLE-STRANDED-RNA, NECROSIS VIRUS, CPG OLIGODEOXYNUCLEOTIDES, ANTIVIRAL ACTIVITY, EGTVED VIRUS, CELLS, PROTEIN, LEUKOCYTES, EXPRESSION, CLONING",
author = "A Johansen and B Collet and E Sandaker and Secombes, {C J} and Jorgensen, {J B}",
year = "2004",
doi = "10.1016/S1050-4648(03)00060-3",
language = "English",
volume = "16",
pages = "173--184",
journal = "Fish & Shellfish Immunology",
issn = "1050-4648",
publisher = "ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD",

}

TY - JOUR

T1 - Quantification of Atlantic salmon type-I interferon using an Mx1 promoter reporter gene assay

AU - Johansen, A

AU - Collet, B

AU - Sandaker, E

AU - Secombes, C J

AU - Jorgensen, J B

PY - 2004

Y1 - 2004

N2 - We here describe an assay for the detection of interferon-like activity in Atlantic salmon based on the transient transfection of chinook salmon embryo cells (CHSE-214 cells) with a rainbow trout Mx1 promoter linked to a luciferase reporter. A beta-galactosidase gene under the control of a constitutively expressed beta-actin promoter was used as a transfection standard. and luciferase and beta gal expression were measured by a commercially available kit. Interferon containing supernatants from poly I:C- or CpG-stimulated leucocytes added to transfected CHSE-cells induced high luciferase expression (>60-fold induction compared to supernatants from non-stimulated cells). There was no response to supernatants from LPS- and ConA/PMA-stimulated leucocytes, demonstrating the specificity for type I interferon-like activity. Duplicate samples analysed using a cell protection assay for detection of antiviral activity correlated well with levels obtained by the Mx1 promoter reporter gene assay (R-2=0.97), confirming the reporter assay as a reliable substitute for the standard antiviral assay. The Mx reporter gene assay also has advantages in terms of sensitivity, high dynamic range and reliability over the conventional cell protection assay. (C) 2003 Elsevier Ltd. All rights reserved.

AB - We here describe an assay for the detection of interferon-like activity in Atlantic salmon based on the transient transfection of chinook salmon embryo cells (CHSE-214 cells) with a rainbow trout Mx1 promoter linked to a luciferase reporter. A beta-galactosidase gene under the control of a constitutively expressed beta-actin promoter was used as a transfection standard. and luciferase and beta gal expression were measured by a commercially available kit. Interferon containing supernatants from poly I:C- or CpG-stimulated leucocytes added to transfected CHSE-cells induced high luciferase expression (>60-fold induction compared to supernatants from non-stimulated cells). There was no response to supernatants from LPS- and ConA/PMA-stimulated leucocytes, demonstrating the specificity for type I interferon-like activity. Duplicate samples analysed using a cell protection assay for detection of antiviral activity correlated well with levels obtained by the Mx1 promoter reporter gene assay (R-2=0.97), confirming the reporter assay as a reliable substitute for the standard antiviral assay. The Mx reporter gene assay also has advantages in terms of sensitivity, high dynamic range and reliability over the conventional cell protection assay. (C) 2003 Elsevier Ltd. All rights reserved.

KW - Atlantic salmon

KW - transient transfection

KW - Mx promoter

KW - CHSE-214 cell line

KW - CpG

KW - poly I : C

KW - interferon

KW - leucocytes

KW - DOUBLE-STRANDED-RNA

KW - NECROSIS VIRUS

KW - CPG OLIGODEOXYNUCLEOTIDES

KW - ANTIVIRAL ACTIVITY

KW - EGTVED VIRUS

KW - CELLS

KW - PROTEIN

KW - LEUKOCYTES

KW - EXPRESSION

KW - CLONING

U2 - 10.1016/S1050-4648(03)00060-3

DO - 10.1016/S1050-4648(03)00060-3

M3 - Article

VL - 16

SP - 173

EP - 184

JO - Fish & Shellfish Immunology

JF - Fish & Shellfish Immunology

SN - 1050-4648

ER -