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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Activity of paclitaxel liposome formulations against human ovarian tumor xenografts.

Although the current clinical formulation of paclitaxel (Taxol) is an important new anti-cancer agent, it has significant side effects, some of which are related to its formulation in Cremophor/ethanol. Paclitaxel is difficult to formulate for i.v. administration because of its poor aqueous solubility. Here, we report the therapeutic effects of 2 liposome formulations of paclitaxel against human ovarian A121 tumor growing as an s.c. xenograft in athymic nude mice. The liposome formulations used were ETL and TTL, which have I or 3 lipid components, respectively. TTL was used as a reconstituted lyophilate or as a stable aqueous suspension. ETL was used as a reconstituted lyophilate only. Both paclitaxel-liposome formulations were much better tolerated than Taxol after i.v. or i.p. administration. The acute reactions seen after Taxol administration did not occur when paclitaxel-liposome formulations were administered. All ETL and TTL preparations significantly delayed A121 tumor growth similarly to Taxol at equivalent doses and schedules. Based on pharmacokinetic data, it is possible that paclitaxel rapidly dissociates from ETL or TTL after i.v. administration and distributes in a manner similarly to Taxol. ETL and TTL formulations may be useful clinically not only for eliminating toxic effects of the Cremophor/ethanol vehicle but also for allowing alterations in route and schedule of drug administration.[1]


  1. Activity of paclitaxel liposome formulations against human ovarian tumor xenografts. Sharma, A., Mayhew, E., Bolcsak, L., Cavanaugh, C., Harmon, P., Janoff, A., Bernacki, R.J. Int. J. Cancer (1997) [Pubmed]
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