What question did this study set out to answer?

The aim is to assess the impact of interleukin-9 on the proliferation of leukemic cells in acute myeloid leukemia (AML).

April 27, 2026Open Access

Interleukin-9 (IL-9) stimulates the proliferation of human myeloid leukemic cells

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Randomized trial evaluates IL-9's role in stimulating proliferation of leukemic cells, suggesting therapeutic implications.

The aim is to assess the impact of interleukin-9 on the proliferation of leukemic cells in acute myeloid leukemia (AML).
Evaluated proliferative response of leukemic cell lines and primary AML samples to rh-IL-9 and combinations with other CSFs.
Conducted clonogenic assays and flow cytometric analysis to determine cell-cycle characteristics and apoptosis.
Assessed interactions between IL-9 and SCF, IL-3, and GM-CSF in enhancing leukemic cell growth.
IL-9 increased CFU-L formation from AML cells (mean 107 +/- 32 vs 19 +/- 10, P < .02).
IL-9 combined with SCF showed an additive effect in 5 of 8 cases (187 +/- 79 colonies vs 107 +/- 32, P = .05).
IL-9 significantly increased leukemic cells in S-phase and decreased G(0) fraction (38.2% +/- 24% vs 58.6% +/- 22%, P < .05).

Lemoli et al. (1996) studied this question.

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