Abstract:
:A lymphocyte blastogenesis inhibitory factor (LBIF) has been characterized as an immunoregulatory molecule, especially on the T-lymphocyte proliferation. Using fast protein liquid chromatography-purified LBIF, we examined the effect of LBIF on the proliferation of various 18 tumor cell lines in vitro in comparison with those of interferon-alpha, interferon-gamma, tumor necrosis factor-alpha, transforming growth factor-beta 1, or interleukin 1 alpha/beta. We showed here that LBIF strongly inhibited the proliferation of various tumor cell lines irrespective of cell lineage or species. LBIF was effective on a wider spectrum of tumor cell lines than other cytokines tested here. The inhibition resulted from cytotoxic or cytostatic effects, depending on individual characteristics of tumor cell lines. Five cell lines showed insensitivity against LBIF activity, suggesting a plausible involvement of LBIF receptor molecules to transduce LBIF signals. These results suggest that LBIF may play important roles in regulating cell growth.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Sugimura K,Ohno T,Fukuda S,Wada Y,Kimura T,Azuma Isubject
Has Abstractpub_date
1990-01-15 00:00:00pages
345-9issue
2eissn
0008-5472issn
1538-7445journal_volume
50pub_type
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