Abstract:A water solubilization technique using biocompatible polypeptides via a mechanochemical approach was developed for the issues in the pharmaceutical industry.
“…For the PLAMs–PTX sample, the intensive peak at 232 nm was found. According to the literature data for the PTX in THF, the peak at 230 nm corresponds to the absorption of PTX [ 73 ]. In Figure 10 , the UV–Vis spectrum of commercial Paclitaxel-Teva is presented.…”
Section: Resultsmentioning
confidence: 99%
“…So, the search for effective drug delivery forms for PTX is still challenging. The intravenous route of administration of PTX is the major method for treatment [ 72 , 73 , 78 , 79 ]. For this purpose, different carriers of amphiphilic and polymeric structures are developing [ 9 , 11 , 15 , 18 , 46 , 61 , 72 , 78 ].…”
A facile technique for the preparation of mixed polylactide micelles from amorphous poly-D,L-lactide-block-polyethyleneglycol and crystalline amino-terminated poly-L-lactide is described. In comparison to the classical routine solvent substitution method, the ultrasonication assisted formation of polymer micelles allows shortening of the preparation time from several days to 15–20 min. The structure and morphology of mixed micelles were analyzed with the assistance of electron microscopy, dynamic and static light scattering and differential scanning calorimetery. The resulting polymer micelles have a hydrodynamic radius of about 150 nm and a narrow size distribution. The average molecular weight of micelles was found to be 2.1 × 107 and the aggregation number was calculated to be 6000. The obtained biocompatible particles were shown to possess low cytotoxicity, high colloid stability and high stability towards enzymatic hydrolysis. The possible application of mixed polylactide micelles as drug delivery vehicles was studied for the antitumor hydrophobic drug paclitaxel. The lethal concentration (LC50) of paclitaxel encapsulated in polylactide micelles was found to be 42 ± 4 µg/mL—a value equal to the LC50 of paclitaxel in the commercial drug Paclitaxel-Teva.
“…For the PLAMs–PTX sample, the intensive peak at 232 nm was found. According to the literature data for the PTX in THF, the peak at 230 nm corresponds to the absorption of PTX [ 73 ]. In Figure 10 , the UV–Vis spectrum of commercial Paclitaxel-Teva is presented.…”
Section: Resultsmentioning
confidence: 99%
“…So, the search for effective drug delivery forms for PTX is still challenging. The intravenous route of administration of PTX is the major method for treatment [ 72 , 73 , 78 , 79 ]. For this purpose, different carriers of amphiphilic and polymeric structures are developing [ 9 , 11 , 15 , 18 , 46 , 61 , 72 , 78 ].…”
A facile technique for the preparation of mixed polylactide micelles from amorphous poly-D,L-lactide-block-polyethyleneglycol and crystalline amino-terminated poly-L-lactide is described. In comparison to the classical routine solvent substitution method, the ultrasonication assisted formation of polymer micelles allows shortening of the preparation time from several days to 15–20 min. The structure and morphology of mixed micelles were analyzed with the assistance of electron microscopy, dynamic and static light scattering and differential scanning calorimetery. The resulting polymer micelles have a hydrodynamic radius of about 150 nm and a narrow size distribution. The average molecular weight of micelles was found to be 2.1 × 107 and the aggregation number was calculated to be 6000. The obtained biocompatible particles were shown to possess low cytotoxicity, high colloid stability and high stability towards enzymatic hydrolysis. The possible application of mixed polylactide micelles as drug delivery vehicles was studied for the antitumor hydrophobic drug paclitaxel. The lethal concentration (LC50) of paclitaxel encapsulated in polylactide micelles was found to be 42 ± 4 µg/mL—a value equal to the LC50 of paclitaxel in the commercial drug Paclitaxel-Teva.
“…Complexes of hydrophobic compounds with solubilizers were prepared via HSVM, as previously reported. [15][16][17][18][19][20][21][22]35 Briey describing the procedure, solid mixtures of solubilizers and hydrophobic compounds were shaken with two agate mixing balls using a high-speed vibrating mill (25 Hz, 30 min), suspended in 2.0 mL of aqueous solution, and then centrifuged to collect the supernatant. Polypeptides, including PLL, PGA, and Col, were used as solubilizers.…”
Section: Preparation and Characterization Of Supramolecular Complexesmentioning
confidence: 99%
“…[23][24][25][26][27][28][29][30][31][32][33][34] More recently, using polypeptides as solubilizers, we succeeded in solubilizing paclitaxel, a hydrophobic anticancer drug, in larger quantities compared to that using polysaccharides, which are conventional solubilizers. 35 The results encouraged us to investigate the applicability of polypeptides as water solubilizers.…”
Section: Introductionmentioning
confidence: 99%
“…With an excellent biocompatibility [23][24][25][26][27][28][29][30][31][32][33][34][35] and responsiveness to external stimuli, including enzymes, 23,24 pH, 25,26 and reactive oxygen species, 27 polypeptides have been used in various elds, including the biomedical eld, as drug delivery systems 23,27,29 and hydrogels. 24,[27][28][29] For example, poly-L-lysine (PLL), which is traditionally used as a coating agent for culture media to enhance the attachment of cells 30 and manipulate neuronal cellular fate, 31 has a primary amino group in its side chain, which contributes to structural changes associated with pH changes.…”
To detect small aromatic molecules in water, we prepared functional host molecules based on water‐soluble N,N’‐bis(2‐aminobenzophenone)‐1,4,5,8‐naphthalenetetracarboxylic diimide (1) and a solubilizing agent using a high‐speed vibration milling apparatus. The fluorescence response of host 1‐solubilizing agent complexes before and after extraction of small aromatic guest molecules was large and the fluorescence maxima were dependent on the small aromatic guest molecules.
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