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R-etodolac (SDX-101) and the related indole-pyran analogues SDX-308 and SDX-309 potentiate the antileukemic activity of standard cytotoxic agents in primary chronic lymphocytic leukaemia cells
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk farmakologi. (Cancer Pharmacology and Informatics)
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk farmakologi. (Cancer Pharmacology and Informatics)
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2007 (Engelska)Ingår i: Cancer Chemotherapy and Pharmacology, ISSN 0344-5704, E-ISSN 1432-0843, Vol. 60, nr 4, s. 545-553Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Objective: SDX-101 is the non-cyclooxygenase 2-inhibiting R-enantiomer of the non-steroid anti-inflammatory drug etodolac, and has anti-tumour activity in chronic lymphocytic leukaemia (CLL). SDX-308 and SDX-309 are more potent, structurally related indole-pyran analogues of SDX-101. The current study was performed to investigate and quantify the cytotoxic potentiating effects resulting from a combination of either SDX-101, SDX-308 or SDX-309 with standard cytotoxic agents used in the CLL treatment today. Methods: The lymphoma cell line U937-gtb was used, together with primary tumour cells isolated from seven CLL patients. Combinations between chlorambucil and each one of the agents etodolac, SDX-101, SDX-308 and SDX-309 were studied. In addition, SDX-309 was combined with fludarabine, doxorubicin or vincristine. Both simultaneous and sequential exposures were explored using the median-effect method. Results: Most combinations were additive, which could be of clinical benefit since SDX-101 has been shown to be well tolerated. At the 70% effect level, synergy was observed between SDX-308 and chlorambucil in U937-gtb cells and in two-third of the CLL samples. Since chlorambucil is the most important drug in CLL therapy today and SDX-308 is presently targeted as the lead clinical candidate, this combination would be interesting for further studies. Vincristine and SDX-309 were synergistic in two-fourth of CLL samples. Conclusions: To conclude, the non-COX-inhibiting etodolac-derivatives SDX-101, SDX-308 and SDX-309 are potential candidates for combination treatment of CLL. Especially, SDX-308 in combination with chlorambucil warrants further evaluation.

Ort, förlag, år, upplaga, sidor
2007. Vol. 60, nr 4, s. 545-553
Nyckelord [en]
CalcuSyn, Combination, Etodolac, SDX-101, SDX-308
Nationell ämneskategori
Farmaceutiska vetenskaper
Identifikatorer
URN: urn:nbn:se:uu:diva-24876DOI: 10.1007/s00280-006-0400-9ISI: 000248134700010PubMedID: 17186240OAI: oai:DiVA.org:uu-24876DiVA, id: diva2:52650
Tillgänglig från: 2007-02-08 Skapad: 2007-02-08 Senast uppdaterad: 2018-01-12Bibliografiskt granskad

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Lindhagen, ElinLarsson, RolfÅleskog, Anna

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Cancer Chemotherapy and Pharmacology
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