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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DOI: https://doi.org/10.1007/BF00199313