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Tumour inhibitory effects of TCGF/IL-2/-containing preparations

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Summary

Supernatants from ConA-stimulated rat spleen cell cultures and from cultures of PMA-stimulated murine lymphoma subline EL-4TF were found to contain TCGF and to inhibit growth of a transplantable, MC-induced sarcoma MC11 in syngeneic mice. Tumour-inhibitory effects of the supernatants were dependent on local and repeated administration. Prior to use of the supernatants obtained from PMA-stimulated EL-4TF cell cultures, the dialysable PMA had to be removed; contamination with PMA was found to abolish the tumour-inhibitory effect of the supernatants and to produce enhancement of tumour growth. A significant tumour-inhibitory effect has also been obtained with partially purified TCGF prepared from culture supernatants of cloned EL-4TF cells by ammonium sulphate precipitation, ion-exchange (FPLC) chromatography, and AcA 44 Ultrogel filtration.

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Abbreviations

TCGF:

T cell growth factor

IL-2:

interleukin 2

Con A:

concanavalin A

3H-TDR:

tritiated thymidine

PMA:

4-β-phorbol-12-β-myristate-13-α-acetate

NK:

natural killer cells

B10:

C57BL10/ScSnPH mice

FPLC:

fast protein liquid chromatography

BSA:

bovine serum albumin

OVA:

ovalbumin

SBI:

trypsin inhibitor from soybean

Cyt C:

cytochrome C

OD:

optical density

PBS:

phosphate-buffered saline

MC:

3-methylcholanthrene

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Bubeník, J., Indrová, M., Perlmann, P. et al. Tumour inhibitory effects of TCGF/IL-2/-containing preparations. Cancer Immunol Immunother 19, 57–61 (1985). https://doi.org/10.1007/BF00199313

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