@article{oai:nagoya.repo.nii.ac.jp:00015490, author = {NAHAR, LUTFUN and KONDO, TAKAO and HABU, SONOKO and OHASHI, MASARU and NAKANE, PAUL K.}, issue = {1-4}, journal = {Nagoya Journal of Medical Science}, month = {Mar}, note = {The mode of natural killer (NK) cell migration to the sites of inflammation and transplanted tumors was investigated by using dry ice for physical irritation and 1-fluoro-2,4 dinitrobenzene (DNFB) for chemical irritation in mouse ear. In experiments with transplanted tumors, NK cell sensitive tumor cells (RL♂I) and insensitive tumor cells (p815) were transplanted into the ears of C3H and BALB/c mice, respectively. Employing a polyclonal rabbit antiserum against asialoGM1 (GA1), and a monoclonal rat antiserum against Thy-1 in an immunohistochemical double-staining technique, we enumerated the number of Thy-1-positive and asialoGM1- positive (Thy-1^+GA1^+) cells and Thy-1-negative and asialoGM1-positive (Thy-1^-GA1^+) cells at various times of irritation. Following physical irritation, Thy-1^-GA1^+ cells (108.8 ± 4.5/mm2 at 24 hand 71.2 ± 3.8/mm2 at 48 h) were found in the epidermis, whereas Thy-1^+GA1^+ cells were not found. In delayed-type skin reaciton by DNFB, Thy-1^-GA1^+ cells (87.1 ± 5.8/mm2 at 24h and 60.7 ± 2.9/mm2 at 48h) and Thy-1^+GA1^+ cells (26.4 ± 3.6/mm2 at 24h and 15.3 ± 4.3/mm2 at 48h) were found in the dermis. Since it was reported by previous investigators that Thy-1^+GA1^+ cells are NK cells, we assumed that NK cells infiltrated nonspecifically in the dermis in delayed-type skin reaction by DNFB. In the tumor transplant experiments. the GA1^+ cells were found near both types of tumors, but they were in contact with RL♂1 and not with p815. Because it was reported that GA1^+ monocytes do not have cytotoxicity against tumor cells, our findings suggest that GA1^+ cells migrate nonspecifically to the sites of inflammation, and that the NK cells among them may make direct contact with the tumor cells when they encounter NK cell sensitive tumors.}, pages = {25--34}, title = {Natural Killer Cells in Inflammatory Lesions and Transplanted Tumors in Mouse Skin}, volume = {51}, year = {1989} }