Liposome medicinal composition with tumor targeting, in-vivo tracing and treating functions and preparation method thereof
A technology targeting liposomes and therapeutic effects, applied in preparations for in vivo experiments, drug combinations, anti-tumor drugs, etc., can solve the problems of unmonitored distribution, high toxicity and side effects of chemotherapy, etc., to achieve long-term application, no Toxic and side effects, little damage effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0054] Preparation of targeted liposome pharmaceutical composition carrying reporter gene
[0055] (1) DOPC, DOPE, cholesterol, DOPE-PEG2000, DOPE-PEG2000-Mal are mixed according to the original molar ratio of 40:40:40:6:3, and dissolved in methanol;
[0056] (2) utilizing a rotary evaporator to evaporate the solution of step (1) to form a liposome membrane;
[0057] (3) The liposome membrane formed in step (2) was hydrated for one hour with phosphate buffered saline (PBS), so that the total lipid concentration was 3.32 millimoles per liter;
[0058] (4) Ultrasound makes the solution obtained in step (3) become tiny uniform lipid bubbles, and cross the polycarbonate membrane of 100 nanometers to make it a uniform liposome with a particle diameter of about 100 nanometers;
[0059] (5) adding the CD44 antibody according to the molar ratio of the anti-CD44 antibody to DOPE-PEG2000-Mal as 1:50, and using the sulfhydryl group to combine with the PEG chain on the liposome to obtain...
Embodiment 2
[0064] Preparation of non-targeting liposome pharmaceutical composition carrying reporter gene
[0065] (1) DOPC, DOPE, cholesterol, DOPE-PEG2000, DOPE-PEG2000-Mal are mixed according to the original molar ratio of 40:40:40:6:3, and dissolved in methanol;
[0066] (2) utilizing a rotary evaporator to evaporate its solution to form a liposome membrane;
[0067] (3) The liposome membrane formed was hydrated for one hour with phosphate buffered saline (PBS), so that the total lipid concentration was 3.32 mmol per liter;
[0068] (4) Ultrasound makes it become a tiny uniform lipid bubble, and crosses a polycarbonate membrane of 100 nanometers to make it a uniform non-targeted liposome with a particle size of about 100 nanometers;
[0069] (5) Coupling of the reporter gene and the liposome, the liposome is mixed with the plasmid pCDNA3.1-RL-RFP-tTK constructed in Example 1 at a ratio of 20 micrograms of plasmid per 100 microliters of liposomes, and the lipid The positive charge o...
Embodiment 3
[0071] Efficacy identification and in vivo tracking of targeted liposomes
[0072] An orthotopic model of liver cancer in NOD / SCID combined immunodeficiency mice was established. Digest well-grown HepG2 cell lines marked with firefly luciferase and green fluorescent protein with trypsin, wash once with PBS, and resuspend with RMPI1640 basic medium to make the cell density 1×10 per ml medium. 7 cells. Anesthetized with water and chloral, cut the upper left abdomen of the NOD / SCID combined immunodeficiency mouse, exposed the liver lobe, injected 10 microliters of the above cell suspension into the liver lobe of the mouse, and sutured it. About a week later, the liver was in situ A detectable tumor grows. 100 microliters of the targeted liposome-DNA complex prepared in Example 1 was injected into the tumor-bearing mice through the tail vein, followed by intraperitoneal injection of ganciclovir every day at a dose of 50 mg / kg body weight, once a day .
[0073] In vivo chemilum...
PUM
Property | Measurement | Unit |
---|---|---|
Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com