PMID: 3262092Sep 15, 1988Paper

Heterogeneity of human lymphokine (IL-2)-activated killer (LAK) precursors and regulation of their LAK induction by blood monocytes

International Journal of Cancer. Journal International Du Cancer
S SoneT Ogura

Abstract

Highly purified lymphocytes (greater than 99%) and monocytes (greater than 90%) were isolated by CCE from peripheral blood of healthy donors. Blood lymphocytes were separated by this CCE into 9 subpopulations. The NK activities of these lymphocyte fractions against NK-sensitive K-562 cells and their LAK activities against NK cell-resistant target (Daudi) cells were assayed promptly or after incubation of the fractions for 4 days with or without an optimal concentration of IL-2. NK and LAK activities were measured by 4-hr 51Cr-release assay. On the basis of their NK and LAK activities, these lymphocyte fractions were classified into 3 subpopulations of LAK precursors: one lacking both NK and LAK activities (Fr.2), one with moderate NK activity but low LAK activity (Fr.5), and one possessing both NK and LAK activities (Fr.8). Addition of autologous fresh monocytes to the lymphocyte cultures resulted in a significant increase in induction of LAK activity in Fr.2 and Fr.5. This up-regulation of lymphocytes in Fr. 2 and Fr.5 by monocytes was confirmed in parallel experiments by measuring the blastogenic response of the lymphocytes to IL-2. Deletion of lymphocytes in Fr. 8 of CD16+ (Leu-11+) NK cells resulted in 74% reduction in LAK ...Continue Reading

References

Jan 1, 1986·Biochimica Et Biophysica Acta·S Sone
Jan 15, 1988·International Journal of Cancer. Journal International Du Cancer·A NiiT Ogura
Oct 1, 1986·The Journal of Experimental Medicine·J R OrtaldoR Overton
Apr 9, 1987·The New England Journal of Medicine·W H WestR K Oldham
Dec 1, 1981·International Journal of Cancer. Journal International Du Cancer·P HerseyW H McCarthy
Nov 30, 1982·Biochemical and Biophysical Research Communications·S HinumaK Tsukamoto

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Citations

May 12, 2000·American Journal of Respiratory and Critical Care Medicine·K TaniS Sone
Jun 19, 1991·International Journal of Cancer. Journal International Du Cancer·I S TunruS Yano
Sep 15, 1990·International Journal of Cancer. Journal International Du Cancer·I S MiskoK J Burman
Sep 1, 1990·Japanese Journal of Cancer Research : Gann·Y NishiokaT Ogura
Dec 1, 1989·Japanese Journal of Cancer Research : Gann·H YanagawaT Ogura

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