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Therapeutic Nanoparticle Constructs of a JAK3 Tyrosine Kinase Inhibitor Against Human B-lineage ALL Cells

Therapeutic Nanoparticle Constructs of a JAK3 Tyrosine Kinase Inhibitor Against Human B-lineage ALL Cells

Fatih M Uckun, Ilker Dibirdik, Sanjive Qazi, Seang Yiv

Arzneimittelforschung. 2010;60(4):210-7.

PMID: 20486472

Abstract:

WHI-P131 (CAS 202475-60-3) is a dual-function inhibitor of JAK3 tyrosine kinase that demonstrated potent in vivo anti-inflammatory and anti-leukemic activity in several preclinical animal models. This is the first report of the development of nanoparticle (NP) constructs ofWHI-P131. Fourty-eight distinct NP formulations were prepared and WHI-P131 encapsulation efficiencies > 95% and intraliposomal WHI-P131 concentrations >10 mg/mL were achieved in lead NP formulations. The anti-cancer activity of WHI-P131-NP, a PEGylated lead formulation was tested in vitro and in vivo. Notably, WHI-P131-NP was capable of causing apoptotic death in primary leukemia cells from chemotherapy-resistant acute lymphoblastic leukemia (ALL) as well as chronic lymphocytic leukemia (CLL) patients. WHI-P131-NP was also active in the RS4;11 SCID mouse xenograft model of chemotherapy-resistant B-lineage ALL. The life table analysis showed that WHI-P131-NP was more effective than WHI-P131 (P = 0.01), vincristine (P < 0.0001), or vehicle (P < 0.0001). These experimental results demonstrate that the nanotechnology-enabled delivery of WHI-P131 shows therapeutic potential against leukemias with constitutive activation of the JAK3-STAT3/STAT5 molecular target.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP202475603	JAK3 Inhibitor I - CAS 202475-60-3		202475-60-3	Price

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