The interleukin-5 (IL-5) receptor is a heterodimer that consists of an IL-5 specific alpha subunit and a common ssc chain that is shared with the receptors for granulocyte macrophage colony stimulating factor (GM-CSF) and interleukin-3 (IL-3). In contrast to IL-5, which acts mainly as an eosinophil lineage specific factor in vivo, IL-3 and GM-CSF stimulate the survival, proliferation and development of various hematopoietic cell lineages and also multipotent progenitor cells. IL-5 has little effect on the survival or proliferation of the multipotent stem cell line FDCP-Mix A4 but does promote some eosinophil development. To investigate whether the lineage specificity of IL-5 is due to the restricted expression of the IL-5 receptor alpha subunit we transfected the FDCP-Mix A4 cells with a retroviral vector containing this alpha subunit. The ectopic expression of the IL-5 receptor alpha subunit in the FDCP-Mix cells did not increase the observed eosinophilic development but did stimulate survival and proliferation of the transfected cells when IL-5 was added. IL-5 thus acts like IL-3 in these cells, promoting proliferation and survival. The results suggest that IL-5, whilst having a capacity to promote proliferation, does not influence eosinophilic lineage commitment in these multipotent cells. The results further argue that the observed lineage specificity of IL-5 is probably due to factors in addition to the restricted expression of the IL-5 receptor alpha subunit.
JOURNAL ARTICLE|
15 March 1998
Ectopic interleukin-5 receptor expression promotes proliferation without development in a multipotent hematopoietic cell line
A. Pierce,
A. Pierce
Leukemia Research Fund, Cellular Development Unit, UMIST, Manchester M60 1QD, UK.
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A.D. Whetton,
A.D. Whetton
Leukemia Research Fund, Cellular Development Unit, UMIST, Manchester M60 1QD, UK.
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P.J. Owen-Lynch,
P.J. Owen-Lynch
Leukemia Research Fund, Cellular Development Unit, UMIST, Manchester M60 1QD, UK.
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J. Tavernier,
J. Tavernier
Leukemia Research Fund, Cellular Development Unit, UMIST, Manchester M60 1QD, UK.
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E. Spooncer,
E. Spooncer
Leukemia Research Fund, Cellular Development Unit, UMIST, Manchester M60 1QD, UK.
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T.M. Dexter,
T.M. Dexter
Leukemia Research Fund, Cellular Development Unit, UMIST, Manchester M60 1QD, UK.
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C.M. Heyworth
C.M. Heyworth
Leukemia Research Fund, Cellular Development Unit, UMIST, Manchester M60 1QD, UK.
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A. Pierce
Leukemia Research Fund, Cellular Development Unit, UMIST, Manchester M60 1QD, UK.
A.D. Whetton
Leukemia Research Fund, Cellular Development Unit, UMIST, Manchester M60 1QD, UK.
P.J. Owen-Lynch
Leukemia Research Fund, Cellular Development Unit, UMIST, Manchester M60 1QD, UK.
J. Tavernier
Leukemia Research Fund, Cellular Development Unit, UMIST, Manchester M60 1QD, UK.
E. Spooncer
Leukemia Research Fund, Cellular Development Unit, UMIST, Manchester M60 1QD, UK.
T.M. Dexter
Leukemia Research Fund, Cellular Development Unit, UMIST, Manchester M60 1QD, UK.
C.M. Heyworth
Leukemia Research Fund, Cellular Development Unit, UMIST, Manchester M60 1QD, UK.
Online Issn: 1477-9137
Print Issn: 0021-9533
© 1998 by Company of Biologists
1998
J Cell Sci (1998) 111 (6): 815–823.
Citation
A. Pierce, A.D. Whetton, P.J. Owen-Lynch, J. Tavernier, E. Spooncer, T.M. Dexter, C.M. Heyworth; Ectopic interleukin-5 receptor expression promotes proliferation without development in a multipotent hematopoietic cell line. J Cell Sci 15 March 1998; 111 (6): 815–823. doi: https://doi.org/10.1242/jcs.111.6.815
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