Remote loading of sparingly water-soluble drugs into liposomes

    公开(公告)号:US10722467B2

    公开(公告)日:2020-07-28

    申请号:US16454555

    申请日:2019-06-27

    Abstract: The present invention provides liposome compositions containing sparingly soluble drugs that are used to treat life-threatening diseases. A preferred method of encapsulating a drug inside a liposome is by remote or active loading. Remote loading of a drug into liposomes containing a transmembrane electrochemical gradient is initiated by co-mixing a liposome suspension with a solution of drug, whereby the neutral form of the compound freely enters the liposome and becomes electrostatically charged thereby preventing the reverse transfer out of the liposome. There is a continuous build-up of compound within the liposome interior until the electrochemical gradient is dissipated or all the drug is encapsulated in the liposome. However, this process as described in the literature has been limited to drugs that are freely soluble in aqueous solution or solubilized as a water-soluble complex. This invention describes compositions and methods for remote loading drugs with low water solubility (

    Cavitation Enable Tuning of Persistent Micelles

    公开(公告)号:US20200146987A1

    公开(公告)日:2020-05-14

    申请号:US16499408

    申请日:2017-09-06

    Abstract: A method to quickly adjust the size of micelles and then return the micelles to a persistent state is provided. Specifically, the present invention is directed to a method for block copolymer micelle growth under high-χN solution conditions where ultrasonic cavitation facilitates rapid solution-gas interface production that accelerates micelle growth by an order of magnitude over other methods such as vortexing. The persistent micelles formed by the method of the present invention can then be used for controlled delivery of dispersions in organic electronic coatings, paint, or drug delivery applications and can also be used to control the pore size of films that include an oxide, a nitride, a carbide, a metal, or a carbon material.

Patent Agency Ranking