A monoclonal anti-human IL-6 receptor antibody inhibits the proliferation of human myeloma cells

Y. W. Huang, E. S. Vitetta

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

A monoclonal antibody (UV4) against the human IL-6 receptor (hIL-6R) was generated by immunizing BALB/c mice with both a human myeloma cell line (U266) and a murine cell line (M12.4/R) transfected with the hIL-6R cDNA. Flow cytometric analysis demonstrated that UV 4 stains the hIL-6R+ cell lines U266 and U937, but not the hIL-6R- cell lines Daudi and K562. Competitive inhibition assays demonstrated that preincubation of U266 cells with UV4 inhibited the binding of a phycoerythrin (PE)-IL-6 conjugate to the hIL-6R and also inhibited the proliferative activity of IL-6 on the IL-6- dependent human myeloma cell lines ILKM2 and ILKM3. In contrast, UV4 did not interfere with the proliferation of the hIL-6R- Burkitt's lymphoma cell line, Daudi. Direct sandwich radioimmunoassays further confirmed that the UV4 bound to the same molecule as the goat anti-hIL-6R antibody. These results suggest that both UV4 and human IL-6 bind to the same or adjacent epitopes on the hIL-6R. This monoclonal antibody should facilitate studies of the structure-function relationship of IL-6R and may be useful for the treatment of IL-6-dependent diseases such as multiple myeloma.

Original languageEnglish (US)
Pages (from-to)621-630
Number of pages10
JournalHybridoma
Volume12
Issue number5
StatePublished - 1993

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Interleukin-6 Receptors
Antibodies
Interleukin-6
Cell Line
Monoclonal Antibodies
Phycoerythrin
Burkitt Lymphoma
Multiple Myeloma
Goats
Radioimmunoassay
Epitopes
Coloring Agents
Complementary DNA

ASJC Scopus subject areas

  • Genetics
  • Immunology

Cite this

A monoclonal anti-human IL-6 receptor antibody inhibits the proliferation of human myeloma cells. / Huang, Y. W.; Vitetta, E. S.

In: Hybridoma, Vol. 12, No. 5, 1993, p. 621-630.

Research output: Contribution to journalArticle

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