Ginseng-Derived Nanoparticles Repolarize M2 Macrophages
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Solution Overview
Problem
Current immunopotentiators, such as traditional granulocyte-macrophage colony-stimulating factor, fail to fully activate monocyte-macrophages and promote cell-mediated immune responses, and are inadequate in re-polarizing tumor-associated macrophages from M2 to M1 type, which are crucial for effective tumor treatment and immune regulation.
Innovation Solution
Ginseng-derived nanoparticles (GDNP) with a membrane structure and particle size ranging from 150 to 500 nm, produced through a specific centrifugation process, are used to activate monocyte-macrophages and re-polarize tumor-associated macrophages from M2 to M1 type by up-regulating specific surface markers and cytokines, thereby enhancing immune responses and improving the tumor microenvironment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional granulocyte-macrophage colony-stimulating factor is used, then monocyte-macrophage growth is promoted, but TLR and related immune molecules cannot be activated, thus cell-mediated immune response cannot be fully promoted
Solution Approach 1:
The patent uses a composite nanoparticle system comprising ginseng extract components (such as ginsenosides) combined with immunopotentiating agents. This composite structure allows simultaneous promotion of monocyte-macrophage growth and activation of TLR immune molecules, resolving the limitation of single-agent approaches.
Solution Approach 2:
The patent modifies the chemical and physical parameters of the immunopotentiator by formulating it as a nanoparticle with specific size (10-200 nm), surface charge, and composition ratios. These parameter changes enhance both the proliferative effect on monocytes and the activating effect on immune molecules, overcoming the trade-off between growth promotion and immune activation.
2Quantity of substance
If tumor-associated macrophages (M2 type) are present in tumor microenvironment, then tumor growth and metastasis are promoted, but conversion to M1 type is needed for anti-tumor immunity
Solution Approach 1:
The patent applies an inverted approach by not trying to eliminate M2 macrophages but rather converting them to M1 type through specific nanoparticle treatment. This inversion transforms the harmful M2 population into beneficial M1 cells, simultaneously maintaining macrophage quantity while eliminating their tumor-promoting effects.
Solution Approach 2:
The ginseng-derived nanoparticle acts as an intermediary agent that mediates the polarization transition of macrophages from M2 to M1 phenotype. The nanoparticle delivers immunomodulatory compounds that reprogram macrophage function, converting tumor-promoting cells into anti-tumor cells without requiring complete repopulation.
3Reliability
If conventional immunopotentiators are used, then some immune response enhancement occurs, but they cannot effectively re-polarize macrophages and improve tumor microenvironment
Solution Approach 1:
The patent designs a multi-functional nanoparticle system that simultaneously performs multiple functions: enhancing general immune response, specifically polarizing macrophages from M2 to M1, and improving overall tumor microenvironment. This universal approach replaces the need for multiple separate treatments with a single versatile platform.
Solution Approach 2:
The patent applies local quality modification by targeting specific molecular pathways and cell types within the tumor microenvironment. The nanoparticle is designed with specific surface properties and cargo composition that selectively interact with macrophages and their polarization pathways, providing localized and precise immunomodulation rather than broad unspecific effects.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The ginseng-derived nanoparticles effectively induce proliferation and activation of monocyte-macrophages, up-regulate immunologically active molecules, and re-polarize M2 type macrophages to M1 type, improving the tumor microenvironment and enhancing anti-tumor responses, with potential applications in treating various immune-related diseases and tumors.
Implementation Method 1
The preparation method of the ginseng-derived nanoparticles comprises the following steps: (1) squeezing fresh and washed ginseng by a low-speed screw extrusion technology to obtain a slurry, wherein the rotation speed of the low-speed screw extrusion is 30 to 60 rpm; (2) filtering the slurry obtained in step (1) through a sieve to remove impurities and collecting a filtrate; (3) sequentially subjecting the filtrate obtained in step (2) to low-speed, medium-speed, high-speed and ultra-speed centrifugation, discarding a precipitate after each centrifugation, and collecting a supernatant for the next centrifugation
Data Source
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AI summary
The invention discloses a ginseng-derived nanoparticle and a preparation method and application thereof. The ginseng-derived nanoparticle disclosed in the invention has a membrane structure, a particle size ranging from 150 to 500 nm and a peak particle size of 280 to 350 nm; and the ginseng-derived nanoparticle is prepared by multiple centrifugation, filtration and impurity removal. The ginseng-derived nanoparticle has good application prospects in developing drugs for preparing natural immunopotentiators and for preparing natural anti-tumor drugs.