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A highly sensitive quantitative bioassay for human interleukin-11

Z Y Lu1, X G Zhang, Z J Gu

  • 1Institute for Molecular Genetics, CNRS, Montpellier, France.

Journal of Immunological Methods
|July 12, 1994
PubMed
Summary
This summary is machine-generated.

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A new bioassay using B9-11 cells offers high sensitivity for detecting human interleukin-11 (IL-11). This advancement aids in studying IL-11

Area of Science:

  • Immunology
  • Cell Biology
  • Biochemistry

Background:

  • Human interleukin-11 (IL-11) shares activities with IL-6 but its role in disease is unclear due to limited sensitive bioassays.
  • Existing bioassays lack the sensitivity required for accurate measurement of IL-11 levels.

Purpose of the Study:

  • To develop a highly sensitive bioassay for human IL-11.
  • To characterize the specificity and utility of the new bioassay for studying IL-11 in human diseases.

Main Methods:

  • Development of a novel bioassay using a subclone (B9-11) of the B9 hybridoma.
  • Testing the B9-11 cell line's response to various cytokines, including IL-11, IL-6, and others utilizing the gp130 transducer.
  • Assessing the effect of anti-cytokine antibodies on IL-11-induced cell proliferation.

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Main Results:

  • The B9-11 cell line demonstrated high sensitivity and specificity for human IL-11, with half-maximal proliferation at 30 pg/ml.
  • The assay distinguished IL-11 from other cytokines, including IL-6 and those sharing the gp130 receptor.
  • The B9-11 bioassay successfully measured endogenous IL-11 produced by cell lines when combined with an anti-IL-6 antibody.

Conclusions:

  • The B9-11 cell line provides a sensitive and specific bioassay for human IL-11.
  • This new tool facilitates research into IL-11's involvement in human diseases.
  • The bioassay aids in understanding the mechanisms of IL-11 action.