Ding, Hui and Inoue, Satoshi and Ljubimov, Alexander V. and Patil, Rameshwar and Portilla-Arias, Jose and Hu, Jinwei and Konda, Bindu and Wawrowsky, Kolja A. and Fujita, Manabu and Karabalin, Natalya and Sasakie, Takako and Black, Keith L. and Holler, Eggehard and Ljubimova, Julia Y. (2010) Inhibition of brain tumor growth by intravenous poly (beta-L-malic acid) nanobioconjugate with pH-dependent drug release. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 107 (42). pp. 18143-18148. ISSN 0027-8424,
Full text not available from this repository. (Request a copy)Abstract
Effective treatment of brain neurological disorders such as Alzheimer's disease, multiple sclerosis, or tumors should be possible with drug delivery through blood-brain barrier (BBB) or blood-brain tumor barrier (BTB) and targeting specific types of brain cells with drug release into the cell cytoplasm. A polymeric nanobioconjugate drug based on biodegradable, nontoxic, and nonimmunogenic polymalic acid as a universal delivery nanoplatform was used for design and synthesis of nanomedicine drug for i.v. treatment of brain tumors. The polymeric drug passes through the BTB and tumor cell membrane using tandem monoclonal antibodies targeting the BTB and tumor cells. The next step for polymeric drug action was inhibition of tumor angiogenesis by specifically blocking the synthesis of a tumor neovascular trimer protein, laminin-411, by attached antisense oligonucleotides (AONs). The AONs were released into the target cell cytoplasm via pH-activated trileucine, an endosomal escape moiety. Drug delivery to the brain tumor and the release mechanism were both studied for this nanobiopolymer. Introduction of a trileucine endosome escape unit resulted in significantly increased AON delivery to tumor cells, inhibition of laminin-411 synthesis in vitro and in vivo, specific accumulation in brain tumors, and suppression of intracranial glioma growth compared with pH-independent leucine ester. The availability of a systemically active polymeric drug delivery system that passes through the BTB, targets tumor cells, and inhibits glioma growth gives hope for a successful strategy of glioma treatment. This delivery system with drug release into the brain-specific cell type could be useful for treatment of various brain pathologies.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | GENE DELIVERY; IN-VIVO; MALIGNANT GLIOMAS; HPMA COPOLYMER; BARRIER; PEPTIDE; ANGIOGENESIS; PERMEABILITY; CHEMOTHERAPY; LAMININ-8; glioma treatment; polymalic acid; laminin-411; endosomal escape; blood-brain barrier |
| Subjects: | 500 Science > 570 Life sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Biophysik und physikalische Biochemie > Alumni or Retired > Prof. Dr. Eggehard Holler |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Jul 2020 06:26 |
| Last Modified: | 08 Jul 2020 06:26 |
| URI: | https://pred.uni-regensburg.de/id/eprint/24005 |
Actions (login required)
 |
View Item |
