Pharmacological Rac1 inhibitors with selective apoptotic activity in human acute leukemic cell lines

Pharmacological Rac1 inhibitors with selective apoptotic activity in human acute leukemic cell lines

Rac1 GTPase has long been recognized as a critical regulatory protein in different cellular and molecular processes involved in cancer progression, including acute myeloid leukemia. Here we show the antitumoral activity of ZINC69391 and 1A-116, two chemically-related Rac1 pharmacological inhibitors, on a panel of four leukemic cell lines representing different levels of maturation. Importantly,...

Patterns of Gelatinase-B Expression in Leukemic Cell Lines

Expression Pattern of Interferon-γ in Human Leukemic T Cell Lines Following Treatment with Phytoheamagglutinin, phorbol myristate acetate and Lipopolysaccharide

Background: As a T helper type 1 (Th1) derived cytokine, Interferon gamma (IFN-γ) is an important regulator of inflammatory immune responses. Furthermore, IFN-γ plays an essential role in defense against tumors and intracellular pathogens. This study was designed to assess the pattern of IFN-γ production in human leukemic (Jurkat and Molt-4) T cell lines in vitro. Methods: Ju...

Overexpression of microRNA-630 in Acute Leukemic T-cell line

Background: MicroRNAs (miRNAs) are noncoding RNAs that control the expression of their target mRNAs. It affects cancer cell proliferation and apoptosis as oncogenes or tumor suppressors. Dysregulation of miRNAs expression leads to the development of various cancers. Therefore, for the first time in this field, this study investigated the effect of overexpression of microRNA-630 on the Jurkat ce...

Selective Rac1 inhibition in dendritic cells diminishes apoptotic cell uptake and cross-presentation in vivo.

To better understand the influence of cytoskeletal regulation on dendritic cell (DC) function in vivo, the Rho guanosine triphosphatase (GTPase) Rac1 was selectively inhibited in DCs in transgenic (Tg) mice. Although transgene expression did not interfere with the migratory capacities of DC in vivo, a decreased uptake of fluorescent probes was observed. Interestingly, the absence of full Rac1 f...