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Retinyl esters in chylomicron remnants inhibit growth of myeloid and lymphoid leukaemic cells
Author(s) -
SKREDE B.,
BLOMHOFF H. K.,
SMELAND E. B.,
WATHNE K.O.,
NORUM K. R.,
BLOMHOFF R.
Publication year - 1991
Publication title -
european journal of clinical investigation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.164
H-Index - 107
eISSN - 1365-2362
pISSN - 0014-2972
DOI - 10.1111/j.1365-2362.1991.tb01411.x
Subject(s) - myeloid , chylomicron , cell culture , hl60 , cell growth , biology , u937 cell , medicine , cell , chemistry , immunology , endocrinology , biochemistry , lipoprotein , cholesterol , genetics , very low density lipoprotein
Abstract. We have studied the effects of retinyl esters in chylomicron remnants on cell growth and differentiation of myeloid and lymphoid leukaemic cells. Ten μmol l ‐1 retinyl ester in chylomicron remnants effectively reduced proliferation of the myeloid leukaemic cell lines HL60, U937 and KG‐1, and induced differentiation of 68% and 53% of the HL60 and U937 cells, respectively, in 5 days. While no effect on cell growth of the lymphoid cell lines Daudi, Raji and SOS was observed, 10 μmol l ‐1 retinyl esters in chylomicron remnants reduced the growth of the B lymphoid cell line Reh by more than 50%. Primary cell cultures from six patients with acute leukaemia (four non‐lymphocytic and two lymphocytic) were incubated with chylomicron remnant retinyl esters and proliferation was measured by means of thymidine incorporation. Among the myeloid leukaemic cells, the mono‐myelocytic, the two promyelocytic and the monoblastic leukaemic cells were growth inhibited. Chylomicron remnants had no effect on the growth of the c‐ALL primary culture, but reduced proliferation of the T‐ALL primary culture by approximately 20% after 48 h. These data suggest that high doses of retinol may be used in the treatment of some forms of acute leukaemia.