Lymphokine Res 1989 Jan 01;84:451-8.

Evidence for the production of an interleukin-like protein by Asterias rubens (axial organ cells) in mixed leukocyte cultures.

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Cells from the axial organ of the sea star may be separated into two subpopulations, depending on adherence to nylon wool. The non-adherent cells are morphologically and physiologically similar to Th. lymphocytes and produce an MLR-like reaction in a xenogeneic system involving two different species of sea stars. On the second day of such a MLC, these cells released molecules which were probably glycoproteins and which produced a mitogenic effect on all the axial organ cells. No effect occurred when the supernatant was tested on adherent or non-adherent cells separately, suggesting that a cellular cooperation is necessary in order to produce the response. These soluble mediators produced by T-like cells with a mitogenic effect on lymphocyte-like cells resemble the interleukin proteins produced by vertebrate leukocytes.

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Genes referenced: LOC100887844