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ATRA and TSA therapy useful in acute leukemia displaying MLL-AF9 fusion gene.

Vaccine Weekly

| May 05, 2004 | COPYRIGHT 2004 NewsRX. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

2004 MAY 5 - (NewsRx.com & NewsRx.net) -- ATRA and TSA are therapeutically useful in patients with acute leukemia displaying the MLL-AF9 fusion gene.

In acute "leukemia patients with MLL (mixed linage leukemia), rearrangements tend to respond poorly to conventional therapies." The "differentiation of human myeloid leukemia cells displaying the MLL-AF9 gene" was examined "using several differentiation agents," wrote scientists from Japan.

"When MOLM-14 cells were treated with all-trans retinoic acid (ATRA) or 1beta, 25-dihydroxyvitamin D3, significant induced differentiation was observed. Trichostatin A (TSA), an inhibitor of histone deacetylase, demonstrated enhanced effects with ATRA in regard to growth inhibition and differentiation induction in MOLM-14 cells. Pretreatment with TSA before exposure to ATRA displayed increased effect," K. Iijima reported.

"Based on these findings, combined treatment with ATRA and TSA may be clinically ...

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Source: HighBeam Research, ATRA and TSA therapy useful in acute leukemia displaying MLL-AF9...

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