TY - JOUR
T1 - Relationship between metastatic potential and resistance to natural killer cell-mediated cytotoxicity in three murine tumor systems
AU - Hanna, Nabil
AU - Fidler, Isaiah J.
N1 - Funding Information:
1 Received October 2, 1980; accepted January 15, 1981. 2 Supported by Public Health Service contract N01-C075380 from the Office of the Director, National Cancer Institute, with Litton Bionetics, Inc. 3 Animals were maintained under the guidelines set forth by the National Institutes of Health Policy on Humane Care and Use of Animals and by the Animal Welfare Act and in facilities recognized by the American Association for Accreditation of Laboratory Animal Care. 4 Cancer Metastasis and Treatment Laboratory, NCI Frederick Cancer Research Center, P.O. Box B, Frederick, Md. 21701.
PY - 1981/6
Y1 - 1981/6
N2 - The expression of metastatic potential of tumor cells from three different murine tumor systems was correlated with their susceptibility to destruction by NK cells in vivo and in vitro. In the B16 melanoma system, no differences were found in susceptibility to NK-mediated lysis in vitro among the B16-F1 (low metastatic potential), B16-F10Lr (low metastatic potential), and B16-F10 (high metastatic potential) cell lines. This result was also manifested in vivo by the increase in the incidence of metastases exhibited by all three B16 tumor variants when injected into recipients with low levels of NK cell activity (3-wk- old syngeneic inbred C57BL/6 and beige mice). In the K-1735 melanoma system, cells obtained from different pulmonary metastases were uniformly more metastatic than were cells harvested from the parental tumor. Nonetheless, these cells did not exhibit a uniform pattern of resistance or susceptibility to lysis mediated by NK cells in vitro. In the third tumor system, the UV-2237 fibrosarcoma, cloned lines that differ in their metastatic potential as well as cells obtained from several spontaneous or experimental metastases were all sensitive to NK lysis. In another set of experiments, two variant tumor lines (NK-5 and NK-6) resistant to lysis mediated by NK cells were selected in vitro from the heterogeneous UV-2237 fibrosarcoma. These NK-resistant tumor cells were shown to be highly metastatic in syngeneic inbred C3H- mice as well as in allogeneic outbred N:NIH(S) nude mice that possessed high levels of NK cell activity. These data indicated that resistance to lysis mediated by NK cells was not a major or sole prerequisite for successful metastasis. Resistance to NK-cell-mediated lysis, however, could enhance metastasis formation by cells that possessed other properties required to complete this process.—JNCI 1981; 66:1183-1190.
AB - The expression of metastatic potential of tumor cells from three different murine tumor systems was correlated with their susceptibility to destruction by NK cells in vivo and in vitro. In the B16 melanoma system, no differences were found in susceptibility to NK-mediated lysis in vitro among the B16-F1 (low metastatic potential), B16-F10Lr (low metastatic potential), and B16-F10 (high metastatic potential) cell lines. This result was also manifested in vivo by the increase in the incidence of metastases exhibited by all three B16 tumor variants when injected into recipients with low levels of NK cell activity (3-wk- old syngeneic inbred C57BL/6 and beige mice). In the K-1735 melanoma system, cells obtained from different pulmonary metastases were uniformly more metastatic than were cells harvested from the parental tumor. Nonetheless, these cells did not exhibit a uniform pattern of resistance or susceptibility to lysis mediated by NK cells in vitro. In the third tumor system, the UV-2237 fibrosarcoma, cloned lines that differ in their metastatic potential as well as cells obtained from several spontaneous or experimental metastases were all sensitive to NK lysis. In another set of experiments, two variant tumor lines (NK-5 and NK-6) resistant to lysis mediated by NK cells were selected in vitro from the heterogeneous UV-2237 fibrosarcoma. These NK-resistant tumor cells were shown to be highly metastatic in syngeneic inbred C3H- mice as well as in allogeneic outbred N:NIH(S) nude mice that possessed high levels of NK cell activity. These data indicated that resistance to lysis mediated by NK cells was not a major or sole prerequisite for successful metastasis. Resistance to NK-cell-mediated lysis, however, could enhance metastasis formation by cells that possessed other properties required to complete this process.—JNCI 1981; 66:1183-1190.
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U2 - 10.1093/jnci/66.6.1183
DO - 10.1093/jnci/66.6.1183
M3 - Article
AN - SCOPUS:0019413047
SN - 0027-8874
VL - 66
SP - 1183
EP - 1190
JO - Journal of the National Cancer Institute
JF - Journal of the National Cancer Institute
IS - 6
ER -