초록 ▼

The major problem with current direct delivery techniques of therapeutic reagents into solid tumors, especially of cells or large volumes of recombinant DNA reagents or drugs, has been resistance of the tissues to the influx of the fluid and/or cells, resulting in low quantities of the fluid and/or

The major problem with current direct delivery techniques of therapeutic reagents into solid tumors, especially of cells or large volumes of recombinant DNA reagents or drugs, has been resistance of the tissues to the influx of the fluid and/or cells, resulting in low quantities of the fluid and/or cells penetrating into and remaining in the tumor tissue to be treated. Increased penetration and/or reduced backflow and diversion through the point of entry, so that more material is introduced into and remains in the tumor, is obtained through the use of a viscous vehicle, most preferably having a similar density to tissue, for the material to be delivered. Preferred materials include solutions or suspensions of a polymeric material which gel or solidify at the time of or shortly after injection or implantation. In the preferred embodiment, the solution is injected via a catheter into regions of the tumor to be treated.

대표청구항 ▼

[ I claim:] [1.] A method for enhancing the delivery of cytotoxic genetically engineered cells, the improvement comprising adding to the cytotoxic genetically engineered cells an injectable polymeric composition which gels or solidifies at the time of or shortly after injection and has a consistency

[ I claim:] [1.] A method for enhancing the delivery of cytotoxic genetically engineered cells, the improvement comprising adding to the cytotoxic genetically engineered cells an injectable polymeric composition which gels or solidifies at the time of or shortly after injection and has a consistency and density effective to displace the cells at a site where the genetically engineered cells are injected and effective to retain the genetically engineered cells at the site of injection.