WO2010029232A1 - Derives de metalloporphyrines, nanoparticules les comprenant et leur utilisation pour le traitement par therapie photodynamique - Google Patents
Derives de metalloporphyrines, nanoparticules les comprenant et leur utilisation pour le traitement par therapie photodynamique Download PDFInfo
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- 0 *c(cc1)ccc1C([C@@]1NC(C(c2ccc([*+])cc2)=C2N=C3C=C2)=CC1)=C(C=C1)N=C1C(c1ccc(*)cc1)=C(C=C1)NC1=C3c1ccc(*)cc1 Chemical compound *c(cc1)ccc1C([C@@]1NC(C(c2ccc([*+])cc2)=C2N=C3C=C2)=CC1)=C(C=C1)N=C1C(c1ccc(*)cc1)=C(C=C1)NC1=C3c1ccc(*)cc1 0.000 description 3
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- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/22—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains four or more hetero rings
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Definitions
- the subject of the invention is nanovectors for simultaneously targeting, imaging and photodynamic therapy treatment of cancer cells.
- it is based on the use of new molecules derived from porphyrins, silicon nanoparticles comprising them and their use in photodynamic therapy.
- Photodynamic therapy is based on the use of certain therapeutic molecules called photosensitizers, which will preferentially localize in the malignant tissues, and which, when activated with a light source of the appropriate wavelength, in the visible or near infra-red domain, they transmit their energy in excess to the molecular oxygen surrounding them. This activation results in the formation of reactive oxygen species such as free radicals and singlet oxygen. These reactive oxygen species, and more particularly singlet oxygen, are toxic to the cells that surround them and cause the destruction of malignant tissues in their immediate environment: they oxidize the cell membranes and thus cause irreversible lesions of the cells containing the photosensitizer.
- Photodynamic therapy is based on a double selectivity: firstly the selective irradiation of the tissues concerned and secondly the relative selectivity of the photosensitizer for the target tissues.
- the photosensitizers being little toxic to the cells, their diffusion in the body causes only few disadvantages.
- a photosensitizer to be used in vivo must have several qualities, and in particular, it must be easily vectorized to cancerous tissues, it must be water soluble, easy to produce, non-toxic in the absence of irradiation, stable vis- circulating enzymes, with a good tropism for tumor cells and must be removed quickly from healthy tissue.
- most of the molecules belonging to the category of photosensitizers are hydrophobic and their introduction into the body, in particular parenterally, requires the use of particular formulations, including formulations in the form of colloidal suspensions, liposomes , nanoparticles. These formulations make it possible to stabilize the photosensitizers in an aqueous medium and to promote their transport to the target tissues, in particular by using specific targeting molecules.
- T.Y. O'hulchanskyy et al., Nanolett. 2007, 2835 discloses nanostructures of a photosensitizer for photodynamic therapy, wherein the photosensitizer is covalently bound to organic modified silica nanoparticles (ORMOSIL).
- ORMOSIL organic modified silica nanoparticles
- the photosensitizer retains its spectroscopic and functional properties, the nanoparticles of small size, monodisperse, have a good affinity for the cancerous cells and have a high cytotoxic efficiency.
- the photosensitizers used are hydrophobic, which makes it necessary to synthesize in an organic medium, with solvents whose industry today seeks to avoid large-scale use.
- US2007 / 0218049 discloses luminescent nanoparticles to which photosensitisers of the porphyrin family are attached.
- the nanoparticles described in this document are solid and non-porous, they are based on metal molecules such as CdS, CdSe, ZnO, and the photosensitizer is grafted on the surface of these nanoparticles by a cysteine bond.
- Such nanoparticles have been prepared by the development of new phosensitizers of formula (I) below.
- the invention therefore firstly relates to a molecule corresponding to formula (I) below: in which: x represents an integer chosen from: 0 and 1,
- M represents a metal atom chosen from transition metals
- X represents a group chosen from: a halide, an anion of a pharmaceutically acceptable carboxylic acid,
- R represents a group chosen from: a C 1 -C 15 alkyl chain, optionally interrupted by one or more groups chosen from: an ether (-O-), an amine (-NH-), a thioether (- S-) a ketone (-CO-), an ester (-CO-O-), an amide (-CO-NH-), a urea (-NH-CO-NH-), a thiourea (-NH-CS-NH -), an oxycarbonyl (-O-CO-O-), a carbamate (-NH-CO-O-),
- R ' represents a group chosen from: a C 1 -C 6 alkyl, a phenyl, a benzyl,
- R '' represents a group chosen from: and Z represents a pharmaceutically acceptable organic or inorganic cation
- Y " represents a group which can be chosen from: -COO " , -SO 3 "
- a " represents an anion which may be selected from: a halide, an anion of a pharmaceutically acceptable carboxylic acid,
- R 1 represents a C 1 -C JO -
- An alkyl group Ci-C] 0 is a hydrogénocarbonée chain, linear, branched or cyclic having 1 to 10 carbon atoms.
- x represents 0, the compound of formula (I) is a porphyrin derivative and the groups (MX) are replaced by two hydrogen atoms.
- M represents a metal atom selected from: Zn, Pt, Pd, Mn, Gd, Ni, Cr, Ru.
- X represents a group chosen from: Cl “ , Br “ , I “ , acetate, propionate, butyrate, ascorbate, benzoate, cinnamate, citrate, fumarate, glycolate, malonate, tartrate, malate, maleate, mandelate, tosylate, and even more preferably: Cl “ , Br “ , I “ , acetate, tosylate.
- R represents a group chosen from: a C 1 -C 10 alkyl chain, optionally interrupted by one or more groups chosen from: an ether (-O-), an amine (-NH-), a thioether (-S- ), a ketone (-CO-), an ester (-CO-O-), an amide (-CO-NH-), a urea (-NH-CO-NH-), a thiourea (-NH-
- R may be chosen from:
- R ' represents a group chosen from: a C 1 -C 3 alkyl, for example a methyl, an ethyl, an n-propyl, an isopropyl, and preferably a methyl or an ethyl.
- R 1 represents a group chosen from: a C 1 -C 3 alkyl, for example a methyl, an ethyl, an n-propyl or an isopropyl, and even more advantageously a methyl.
- Z + represents a cation which may be chosen from: K + , Li + , Na + , NH 4 + .
- a " represents an anion which can be chosen from: Cl “ , Br “ , I “ , acetate, propionate, butyrate, ascorbate, benzoate, cinnamate, citrate, fumarate, glycolate, malonate, tartrate, malate, maleate, mandelate, tosylate, and even more preferably.
- the preferred porphyrins (I) belong to the following list:
- the molecules of formula (I) are water-soluble photosensitizers having a good ability to convert the surrounding molecular oxygen into reactive oxygen species. Because of their water solubility they can be easily formulated in silicon nanoparticles to which they are covalently bound. And the synthesis of these nanoparticles can be carried out in essentially aqueous medium. among:
- R represents a group chosen from a C 1 -C 15 alkyl chain, optionally interrupted by one or more groups chosen from: an ether (-O-), an amine (-NH-), a thioether (S-), a ketone (-CO-), an ester (-CO-O-), an amide (-CO-NH-), a urea (-NH-CO-NH-), a thiourea (-NH-CS-NH- ), an oxycarbonyl (-O-CO-O-), a carbamate (-NH-CO-O-), then the molecules of formula (I) can be prepared by a process as described in scheme 1 below wherein a porphyrin carrying an amine (II) function is reacted with an isocyanatotrialcoxysilane (or isothiocyanatoalkoxysilane) compound when R is NH-CS-NHR 2 :
- R represents a group -NH-R 2 - or -OR 2 - and R 2 represents a group chosen from a C 1 -C 5 alkyl chain, optionally interrupted by one or more groups chosen from: an ether (-O -), an amine (-NH-), a thioether (S-), a ketone (-CO-), an ester (-CO-O-), an amide (-CO-NH-), a urea (- NH-CO-NH-), a thiourea (-NH-CS-NH-), an oxycarbonyl (-O-CO-O-), a carbamate (-NH-CO-O-), one can carry out a coupling of type SN2, as illustrated respectively in Figure 4 and Figure 5.
- R represents a group -O-CO-NH-R - and R represents a group chosen from a C 1 -C 15 alkyl chain, optionally interrupted by one or more groups chosen from: an ether (-O-), a amine (-NH-), a thioether (S-), a ketone (-CO-), an ester (-CO-O-), an amide (-CO-NH-), a urea (-NH-CO- NH-), a thiourea (-NH-CS-NH-), an oxycarbonyl (-O-CO-O-), a carbamate (-NH-CO-O-), a carbamate bond can be formed by following the method illustrated in Figure 6:
- porphyrins of formula (I) For the preparation of porphyrins of formula (I), the following starting molecules may be employed:
- Cationic porphyrins bearing a phenyl-CO 2 H group are described in: H. Yamaguchi et al., Chem. Eur. J., 2004, 10, 6179. Porphyrins anionic compounds bearing a -CO 2 H group are described in: US 4783529. Anionic porphyrins carrying a hydroxyphenyl group are described in: EP 891977.
- a porphyrin-type compound is used as starting material
- the invention also relates to nanoparticle compositions comprising at least one photosensitizer corresponding to formula (I) above. These nanoparticles are advantageously of organized porosity.
- nanoparticle with organized porosity means nanoparticles whose pores are geometrically distributed in a regular pattern in the three dimensions of space.
- organized porosity there may be mentioned a honeycomb structure.
- the structured nature of the porosity can be observed in different ways:
- the nanoparticles with an organized porosity have an X-ray diffraction spectrum.
- the nitrogen desorption adsorption (BET) method also makes it possible to characterize a structured porosity.
- certain molecules of formula (I) comprise a paramagnetic metal cation (M in porphyrin) which makes it possible to follow the distribution of the nanoparticles in the body by NMR and IRJV1. The fact that these labeling molecules are in an organized structure, with controlled porosity, facilitates image analysis.
- the nanoparticles of the invention are based on silica.
- the manufacture of these nanoparticles comprises a step of polymerizing a silicon precursor under conditions permitting the covalent grafting of the photosensitizer (I) and the formation of an organized porosity network.
- mesoporous silica nanoparticles formed by polymerization of a silicon precursor in the presence of surfactants.
- Mesoporous silica nanoparticles have the advantage of having a high specific surface, volume and controlled size pores.
- the nanoparticles of the invention are advantageously monodisperse.
- the mesoporous silica nanoparticles with controlled porosity of the invention have a particle size ranging from 80 to 400 nm in diameter, a specific surface ranging from 800 to 1000 m 2 / g and pores with a size ranging from 2 to 6 nm. These nanoparticles are advantageously of the MCM41 type.
- the process for producing the nanoparticles of the invention is characterized in that the tetraethoxysilane is polymerized in basic aqueous solution in the presence of a surfactant such as cetyltrimethylammonium bromide and in the presence of the molecule of formula (I) .
- a surfactant such as cetyltrimethylammonium bromide
- it is chosen to manufacture microporous silica nanoparticles.
- the microporous nanoparticles of the invention are of the silicalite type and are synthesized in a basic medium in the presence of the molecule of formula (I) 3 of tetraethoxysilane and of a structuring agent of quaternary ammonium type (such as, for example, tetrapropylammonium hydroxide).
- the nanoparticles of the invention are advantageously monodisperse.
- the nanoparticles of the invention are then microporous with a diameter of between 30 and 80 nm, a specific surface ranging from 100 to 450 m 2 / g and pore diameters ranging from 2 to 20 ⁇ .
- the nanoparticles of the invention are grafted onto their surface by targeting molecules specific for neoplastic tissues, that is to say biomolecules whose receptors are overexpressed by the cancer cells, or on the surface of the cancerous cells.
- targeting molecules facilitate the transfer of the nanoparticles to their biological target.
- these targeting molecules can be chosen from: folic acid, peptides, carbohydrates. They can be grafted onto the nanoparticles of the invention via a polymeric linker as illustrated in FIG. 4.
- the targeting molecules that can be grafted onto the nanoparticles of the invention mention may be made of:
- Mannose which can be grafted onto silicon nanoparticles using a polyethyleneimine linker or polyethylene glycol PEG.
- the grafting of mannose on mesoporous silica nanoparticles is described in particular in I. Young Park et al., International Journal of Pharmaceutics, 359, 2008, 280-287, and the same procedures can be employed.
- Another way is to use phenylsquarate- ⁇ -mannose as shown in FIG.
- peptides such as hormonal target peptides (LH-RH).
- glycodendrimers bearing several monosaccharide or disaccharide derivatives such as mannose, mannose-6-phosphate, glucose, galactose, etc.
- Methods for grafting silica-based microporous nanoparticles by biomolecules have been described in particular in T. Doussineau et al., Eur. J. Inorg. Chem. 2006, 2766-2772 and the same procedures can be used.
- the invention also relates to a method of manufacturing a medicament for the treatment and / or prevention and / or detection of tumors comprising the step of manufacturing the nanoparticles described above.
- the production of singlet oxygen and thus the destruction of the cancerous cells is induced by photon excitation: After irradiation of the nanoparticles by a light source, the singlet oxygen generated makes it possible to destroy the tumor cells.
- the irradiation is carried out at a wavelength of between 630 nm and 680 nm at a power ranging from 2 to 10 mW / cm 2 .
- the results obtained show that the synthesized nanoparticles are effective for generating singlet oxygen in solution with a yield ranging between 30 and 90%.
- These nanoparticles must allow a vectorization of the active agents and their endocytosis in the tumor cells after functionalization on the surface by biomolecules.
- retinoblastoma Y-79 cell lines
- colon cancer HT29 cell lines
- epidermis A 431
- the lung A 549
- breast MDA-MB-231, MCF-7
- the cervix HeLa
- solid tumors that includes, but is not limited to, cancers of the neck and head, digestive and sexual cancers, and any benign or cancerous tumor that can be illuminated.
- the cell lines are irradiated in one of the absorption bands of the photosensitizer, and the efficiency of the nanoparticles is evaluated by MTT test.
- the nanoparticle compositions of the invention may be administered locally or systemically. Local administration can be carried out in particular by injection of the nanoparticle composition near the tumor zone. In the case of superficial tumors, the nanoparticle compositions may be administered topically, in a suitable dosage form (solution, suspension, paste, patch). General administration may be performed intravenously, intramuscularly, subcutaneously, intraperitoneally or rectally. Such formulations and their mode of implementation are well known to those skilled in the art.
- the dosage of the active ingredient of faith-mule (I) is adapted according to the weight and the age of the patient, the nature, the location and the stage of development of the tumor, the chosen route of administration and the irradiation dose used.
- the composition may comprise any other known active ingredient for the treatment of tumors and / or their symptoms. It comprises the conventional components of the galenic adapted to the mode of administration chosen.
- the subject of the invention is also the nanoparticles described above for their use as medicaments, in particular for the prevention and / or treatment of tumors and cancers.
- Figure 1 X-ray diffractogram of silicalite nanoparticles encapsulating anionic porphyrin.
- Figure 2 TEM image of a mesoporous nanoparticle with organized porosity.
- Figure 3 UV spectrum of nanoparticles DBO 15 (NP-PS), DBOl 6
- NP-Mannose NP-Mannose
- Sq-Mannose arylsquarate- ⁇ -mannose
- FIG. 4 Nanoparticles of the Invention Grafted by Targeting Molecules
- FIG. 5 Example of Mannose-Functionalized Nanoparticles
- FIGS. 6 to 14 Biological Results on the Cytotoxic Efficacy of Different Nanoparticles Encapsulating Photosensitizers on Breast Cancer (MDA-MB-231) and Ovarian Cell Lines (POE14) ), prostate (LNCaP) and retinoblastoma (Y-79) after single-photon excitation.
- Porphyrin 4 is prepared from aldehyde 3 (6.2 g, 20 mmol) and 4-pyridinecarboxaldehyde (6.4 g, 60 mmol) which are dissolved in boiling propionic acid (400 mL). Then the pyrrole (5.36 g, 80 mmol) is added dropwise. Reflux is maintained for 2 hours. The solution is evaporated under vacuum. A first purification by chromatography on silica gel eluted with a mixture CH 2 Cl 2 ZEtOH (100/5, v / v) is carried out in order to eliminate a maximum of impurities. A second, eluted with CH 2 Cl 2 then a growing amount of ethanol (0 to 10%) allows the separation of the six porphyrins.
- the 5,10,15-tripyridyl-20-phenylporphyrin 4 is eluted (third fraction) with a CH 2 Cl 2 / EtOH mixture (94/6, v / v) and is obtained after crystallization, with a dichloromethane / methanol mixture, in the form of blue crystals (yield: 5.7%).
- UV-vis spectrum in CH 2 Cl 2 ⁇ ma ⁇ , nm (OD): 418.5 (1), 514.5 (0.61), 549
- Porphyrin 7 (68 mg, 0.08 mmol) and methyl iodide (1 mL) are dissolved in dimethyl formamide (20 mL) and stirred at room temperature for three hours. The solution is concentrated under vacuum and then diluted with methanol (10 mL). The IRA 400 resin (0.9 g) is added to the solution and the suspension is stirred gently for 1 hour 30 minutes. The solution is filtered and then evaporated. The pure compound is obtained in the form of a blue powder after crystallization from a methanol / diethyl ether mixture (80 mg, yield: 100%). UV-vis spectrum in MeOH: ⁇ ma ⁇ , nm ( ⁇ L.mmor'.cm "1): 427 (98.3), 518 (12), 557 (6.1) 593 (4.1), 652 (2,5).
- DB 003 5 mg of porphyrin 9 (5.44 ⁇ 10 -3 mmol) are dissolved in 1 ml of EtOH per passage for 15 minutes under ultrasound, 5 equivalents (2.72 ⁇ 10 -2 mmol) of isocyanatopropyltriethoxysilane are added as well. 4 equivalents (2.17 10 -2 mmol) of diisopropylethylamine The solution is kept at room temperature for 12 hours.
- CTL cetyltrimethylammonium bromide
- the surfactant is extracted by treatment with 30 ml of 12N EtOH / HCl solution (4/1) for 2 hours at 60 ° C. After centrifugation, the operation is repeated twice, then the nanoparticles resuspended in water and centrifuged. until a neutral pH (5 times).
- the surfactant can be removed by ammonium nitrate treatment (Chem Mater, 2004, 10, 1961): 300 mg of NH 4 NO 3 are dissolved in 150 ml of 95% EtOH. 500 mg of nanoparticles are suspended in this solution and sonicated for 15 minutes, then the solution is placed at 60 ° C for 15 min. The suspension is recovered by centrifugation, redispersed to ultrasound in EtOH, centrifuged. The extraction protocol of the surfactant is repeated once.
- TEM Transmission electron microscopy
- the quasi-elastic light scattering (DLS) confirms the hydrodynamic diameter of 150 nm.
- UV V visible absorption spectroscopy analysis known as UV analysis
- the capacity of the nanoparticles to generate singlet oxygen is evaluated by phosphorescence thereof after irradiation in one of the absorption bands of the photosensitizer and in particular at 421 nm of 3 mg of nanoparticles in 5 ml of absolute EtOH.
- the quantum yield of singlet oxygen formation is 92%.
- TEM Transmission electron microscopy
- the quasi-elastic light scattering (DLS) confirms the hydrodynamic diameter of 200 nm.
- BET indicates a surface area of 891 m 2 / g and a pore diameter of 2 nm.
- the capacity of the nanoparticles to generate singlet oxygen is evaluated by phosphorescence thereof after irradiation in one of the absorption bands of the photosensitizer and in particular at 421 nm of 3 mg of nanoparticles in 5 ml of absolute EtOH.
- the quantum yield of singlet oxygen formation is 32%.
- nanoparticles are washed with EtOH (ultrasound + centrifugation) and then washed with Soxhlet EtOH for 20 h.
- EtOH ultrasound + centrifugation
- Soxhlet EtOH Soxhlet EtOH
- the amino functions are characterized by a qualitative ninhydrin test.
- UV analysis indicates that porphyrin is still present and has not been altered during the reaction.
- the BET indicates that the specific surface area has decreased to 481 m 2 / g, due to the presence of aminopropyl groups on the surface of the nanoparticles but also in the pores.
- the APTS assay is carried out by microanalysis and solid-state NMR. An amine charge of 2.2 mmol / g is obtained. The same procedure is used to synthesize the nanoparticles DB 019 from the nanoparticles DB 005,
- porphyrin 9 4 mg are dissolved in 1 ml of EtOH per passage for 15 minutes with ultrasound, 5 equivalents (4.5 ⁇ l) of isocyanatopropyltriethoxysilane are added, and 4 equivalents (3, 04 ⁇ L) of diisopropylethylamine.
- the solution is kept at ambient temperature for 12 h, then 14 ml of 1 M tetrapropylammonium hydroxide in water, 8.4 ml of TEOS and 2 ml of water are added and the reaction is kept at room temperature for 24 hours. .
- the solution is then put in an oven at 80 ° C. without stirring for 48 hours.
- the solution is centrifuged 3 times 20 minutes at 20000 rpm.
- the nanoparticles are then redispersed in water and centrifuged.
- the extraction of the structuring agent is carried out with a 12N EtOH / HCl solution (4/1) for 2 h at 60 ° C. Two cycles are carried out.
- the nanoparticles are then washed with H 2 O 6 times (6 cycles in water dispersion with ultrasound centrifugation) until a pH of 3.5 is obtained.
- the nanoparticles are then washed twice with EtOH.
- the nanoparticles are analyzed by X-rays on powders and the analysis shows the presence of a structured network characteristic of zeolites (figure
- DLS gives a hydrodynamic radius of 68 nm.
- BET gives a specific surface area of 300 m 2 / g.
- the capacity of the nanoparticles to generate singlet oxygen is evaluated by phosphorescence thereof after irradiation in one of the photosensitizer absorption bands and in particular at 421 nm of 3 mg of nanoparticles in 5 mL of absolute EtOH .
- the quantum yield of singlet oxygen formation is 31%.
- porphyrin 10 4.9 mg are dissolved in 1 mL of absolute EtOH ultrasound. 2 ⁇ l of aminopropyltriethoxysilane are added and the reaction is maintained at room temperature overnight. In a polyethylene bottle the previous reaction is dissolved with vigorous stirring with 14 ml of 1M tetrapropylammonium hydroxide in water, 8.4 ml of tetraethoxysilane and 2 ml of H 2 O. The solution is stirred for 24 hours at room temperature. room temperature and is then placed in an oven at 80 ° C. without stirring. After two days the reaction is cooled and centrifuged. The nanoparticles are redispersed in the water with ultrasound then centrifuged (3 cycles).
- the extraction of the structuring agent is carried out with a 12N EtOH / HCl solution (4/1) for 2 h at 60 ° C. Two cycles are performed. The nanoparticles are then washed with H 2 O 6 times (6 cycles: dispersion in water with ultrasound - centrifugation) until a pH of 3.5 is obtained. The nanoparticles are then washed twice with EtOH.
- the solution is kept stirring for 6 minutes and then rapidly neutralized to pH 7 by the addition of 0.2M HCl (approximately 25 mL).
- the nanoparticles are recovered by centrifugation (20 minutes at 20000 rpm), resuspended in EtOH by ultrasound, centrifuged.
- the surfactant is extracted by treatment with 15 ml of 12N EtOH / HCl solution (4/1) for 2 h at 60 ° C. After centrifugation, the operation is repeated twice, then the nanoparticles are resuspended in water and centrifuged until a pH of about 6 (6 times).
- the TEM shows the presence of a hexagonal network of mesopores with a nanoparticle diameter of the order of 150 nm.
- the DLS shows a hydrodynamic diameter of 311 nm.
- UV analysis confirms the presence of the covalently encapsulated porphyrin. A charge of 4.43 ⁇ mol of porphyrin per g of nanoparticles is obtained.
- the capacity of the nanoparticles to generate singlet oxygen is evaluated by phosphorescence thereof after irradiation in one of the absorption bands of the photosensitizer and in particular at 431 nm of 3 mg of nanoparticles in 5 mL of absolute EtOH. .
- the quantum yield of singlet oxygen formation is 58%
- Tetraethoxysilane (1.75 mL, 0.8 ⁇ 10 -2 mmol) is dissolved in The mixture is added dropwise as well as the previously prepared solution After 40 seconds, 128 ml of deionized water are added, the solution is kept stirring for 6 minutes and then rapidly neutralized to pH 7 by the addition of 0.2M HCl (approximately 25 mL)
- the nanoparticles are recovered by centrifugation (20 minutes at 20000 rpm), resuspended in EtOH by ultrasound and centrifuged
- the surfactant is extracted by treatment with 15 mL of 12N EtOH / HCl solution (4/1) for 2 hours at 60 ° C. After centrifugation, the operation is repeated twice, then the nanoparticles are resuspended in water and centrifuged until a pH of about 6 (6 times) is obtained.
- TEM ( Figure 2) shows the presence of a hexagonal network of mesopores with a nanoparticle diameter of the order of 150 nm.
- the DLS confirms the hydrodynamic diameter of 153 nm.
- UV analysis confirms the presence of the covalently encapsulated porphyrin. 0.97 ⁇ mol of porphyrin per g of nanoparticles is obtained.
- the capacity of the nanoparticles to generate singlet oxygen is evaluated by phosphorescence thereof after irradiation in one of the absorption bands of the photosensitizer and in particular at 431 nm of 3 mg of nanoparticles in 5 mL of absolute EtOH. .
- the quantum yield of singlet oxygen formation is 60%
- DB 015 amino nanoparticles prepared in ⁇ B above are ultrasonically dispersed for 10 minutes in 5 mL of EtOH.
- 59 mg (0.15 mmol) of ⁇ -mannose aryl squarate are dissolved in 5 mL of EtOH-H 2 O (50-50).
- the solution is added to the previous drop by drop.
- 500 ⁇ l of triethylamine are added and the suspension is stirred for 18h.
- the nanoparticles are redispersed in water and centrifuged (3 cycles). Then they are redispersed in EtOH and centrifuged (two cycles). DLS analysis indicates a hydrodynamic diameter of 173 nm.
- HO 2 C-PEG-OH are dissolved in 10 mL of DMF. 21 ⁇ l of Et 3 N, 15 mg of NHS (N-hydroxysuccinimide) 30 mg of DCC (dicyclohexylcarbodiimide) are added. The reaction is maintained overnight at room temperature, then 200 mg of nanoparticles DB 019 are added. After 20 h, the solution is centrifuged, the nanoparticles resuspended in DMF ultrasound then the solution is centrifuged again. The DMF wash is repeated once, then the nanoparticles are washed three times with water, twice with EtOH.
- amino-nanoparticles DB 015 are redispersed under ultrasound for 10 minutes in 5 mL of EtOH.
- 25 mg (0.055 mmol) of ⁇ -mannose-6-carboxylate squarate are dissolved in 5 mL of EtOH-H 2 O (3/2).
- the solution is added to the previous drop by drop.
- 400 ⁇ l of triethylamine are added and the suspension stirred for 17 h. After centrifugation the nanoparticles are redispersed in water and centrifuged (3 cycles), then redispersed in EtOH and centrifuged (three cycles).
- Example 1 PDT Activity of OH21 Nanoparticles on MDA-MB-231 Breast Cancer Cells (FIG. 6) Experimental Conditions: MDA-MB-Breast Cancer Cells
- MDA-MB-231 breast cancer cells with phagocytosis capacities are incubated for 24 hours with 20 ⁇ g / ml of nanoparticles and irradiated for 40 minutes with a laser at 650 nm (power 2 to 10 mW / cm). Two days after irradiation, the living cells are quantified by the enzymatic test of MTT (3- (4,5-dimethylthiazol-2-yl) -2,5-diphenyltetrazolium bromide, Sigma).
- the efficacy of photodynamic therapy is 92% inhibition of cell growth.
- the lack of toxicity of non-irradiated nanoparticles and irradiation in the absence of nanoparticles demonstrate the specificity of photodynamic therapy with these nanoparticles.
- the cells are visualized by fluorescent staining of the DAPI nuclei.
- the images obtained show the specificity of the photodynamic therapy using the nanoparticles of the invention. Cell death is evident and exclusive in the irradiated area and in the presence of nanoparticles.
- Example 2 PDT activity of OH21 nanoparticles on ovarian cancer cells POE14 ( Figure 7).
- the POE 14 cells are maintained in culture as described in Example 1, incubated for 24 h with a reduced nanoparticle concentration of 10 ⁇ g / ml and irradiated as described in Example 1. Two days after irradiation, addition in the medium of MTT makes it possible to quantify the number of living cells.
- Example 3 PDT activity of cationic nanoparticles OH21, OH22 and anionic DB003, DB005 on MDA-MB-231 breast cancer cells (FIG. 8).
- FIG. 8 shows that all of the irradiated nanoparticles tested completely inhibit the growth of MD A-MB-231 cells compared to the TO value which corresponds to the initial cell seeding before irradiation.
- the irradiations of the OH21 and OH22 nanoparticles which contain cationic porphyrins induce a cell death of 51.3% and 57.2% respectively compared to the control (untreated cells).
- nanoparticles DB003 and DB005 containing anionic porphyrins induce after irradiation a cell death of 37.1% and 54% respectively.
- the (low but significant) cytotoxicity of some non-irradiated nanoparticles demonstrates the benefits of specific targeting from mannose.
- Example 4 PDT activity of anionic nanoparticles functionalized by mannose on MDA-MB-231 breast cancer cells (FIG. 9).
- the cells are incubated for 6 hours in medium supplemented or not with mannose (10 ⁇ 2 M), in the presence or absence of 20 ⁇ g / ml of nanoparticles (DB021 or DB005). After 6 h of incubation, the nanoparticles of the medium are removed and the cells are rinsed twice and then cultured in 100 .mu.l of fresh medium. The cells are then subjected to laser irradiation with a wavelength of 630-680 nm, with a power of 2 to 10 mW / cm 2 , for 40 min. 48 hours after irradiation, the living cells are highlighted (A) and quantified (B) by the MTT.
- Figure 10A shows the control level of MTT accumulation in untreated cells. Incubation of the cells with nanoparticles DB021 and subjected to irradiation leads to cell death. This phenomenon is blocked by preincubation with excess mannose. The irradiated DB005 nanoparticles do not induce cell death. Quantification of living cells ( Figure 10B) confirms these observations. The cytotoxicity due to nanoparticles DB021 incubated for 6 hours is only 2 to 10% ( ⁇ mannose) while the irradiation of nanoparticles DB021 induces 70% of cell death. The addition of an excess of mannose largely stops this effect which demonstrates the specificity of internalisation. On the other hand, irradiated or non irradiated DB005 nanoparticles induce only 5 to 10% of cell death.
- Example 6 PDT activity of silicalite nanoparticles DB008 and DB011 on MDA-MB-231 breast cancer cells (FIG. 11).
- Example 7 PDT activity of DB054 nanoparticles on LNCaP prostate cancer cells: specificity of internalization of DB054 (FIG. 12).
- Experimental Conditions Human prostate cancer cells (LNCaP) are incubated for 1 hour with DB054 nanoparticles in a serum-free medium at 37 ° C, in the presence or absence of an excess of M6P and then subjected to laser irradiation (660 nm, 6-7 mW / cm 2 , 40 min). The percentage of living cells is determined using the MTS (Promega) test. The graphical representations correspond to the average of 3 independent experiments.
- results show that DB054 nanoparticles induce a 47% cell death after one hour of treatment. This effect is blocked by the addition in the medium of an excess of 10 mM M6P, which demonstrates an internalisation of the nanoparticles DB054 by the membrane receptor of M6P.
- Example 8 PDT activity of nanoparticles DB054 on prostate cancer cells
- LNCaP variation in the time efficiency of DB054 (FIG. 13).
- DB054 induce respectively 47%, 96% and 100% of cytotoxicity after 1 hour, 3 hours and 24 hours of treatment. These results highlight the speed of action of nanoparticles.
- Example 9 PDT activity of nanoparticles DB016 and DB054 on human retinoblastoma cells (FIG. 14).
- Human retinoblastoma cells (Y-79) are incubated for 1 h with nanoparticles DB054 or BOD 16 in complete medium at 37 ° C and then subjected to laser irradiation (660 nm, 6-7 mW / cm 2 , 40 min). The percentage of living cells is determined using the MTS (Promega) test.
- DB054 and DB016 induce respectively 33% and 38% of cellular cytotoxicity. This demonstrates that nanoparticles functionalized by mannose-6-phosphotate or mannose can be efficiently internalized via different lectins on the surface of Y-79 cells.
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JP2011526529A JP5624545B2 (ja) | 2008-09-15 | 2009-09-14 | 金属ポルフィリン誘導体、それを含むナノ粒子、及び光線力学的療法へのその使用 |
CA2737218A CA2737218C (fr) | 2008-09-15 | 2009-09-14 | Derives de metalloporphyrines, nanoparticules les comprenant et leur utilisation pour le traitement par therapie photodynamique |
EP09741323.1A EP2346875B1 (fr) | 2008-09-15 | 2009-09-14 | Dérivés de metalloporphyrines, nanoparticules les comprenant et leur utilisation pour le traitement par thérapie photodynamique |
AU2009290794A AU2009290794B2 (en) | 2008-09-15 | 2009-09-14 | Metalloporphyrin derivatives, nanoparticles comprising the same, and use thereof for photodynamic therapy |
US13/063,834 US8425879B2 (en) | 2008-09-15 | 2009-09-14 | Metalloporphyrin derivatives, nanoparticles comprising the same, and use thereof for photodynamic therapy |
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WO2013144154A1 (fr) | 2012-03-27 | 2013-10-03 | Centre National De La Recherche Scientifique (Cnrs) | Nanoparticules de silicium poreux fonctionnalisees et leurs utilisations en therapie photodynamique |
WO2015104346A1 (fr) | 2014-01-09 | 2015-07-16 | Genmab B.V. | Anticorps anti-cd3 humanisés ou chimériques |
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CN105198891B (zh) * | 2015-09-30 | 2017-07-18 | 上海应用技术学院 | 一种金属卟啉配合物及其制备方法和应用 |
CN105524072A (zh) * | 2015-12-15 | 2016-04-27 | 江苏大学 | 一种环己烷取代卟啉钴化合物及其合成方法和用途 |
FR3046728B1 (fr) | 2016-01-19 | 2020-04-03 | Centre National De La Recherche Scientifique | Nouvelles nanoparticules d'organosilice mesoporeuses, leur methode de preparation et leurs utilisations. |
JP7544372B2 (ja) | 2020-05-27 | 2024-09-03 | 学校法人福岡大学 | ナトリウムチャネル結合剤及び医薬組成物 |
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WO1994009003A1 (fr) * | 1992-10-21 | 1994-04-28 | Board Of Regents, The University Of Texas System | Derives de sapphyrine, leurs conjugues et polymeres, et supports de chromatographie en porphyrine expansee |
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EP0345171A1 (fr) * | 1988-06-02 | 1989-12-06 | Centre National De La Recherche Scientifique | Dérivés de métalloporphyrines, leur préparation, leur application en thérapeutique et leur utilisation pour la préparation de molécules hybrides |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2013144154A1 (fr) | 2012-03-27 | 2013-10-03 | Centre National De La Recherche Scientifique (Cnrs) | Nanoparticules de silicium poreux fonctionnalisees et leurs utilisations en therapie photodynamique |
WO2015104346A1 (fr) | 2014-01-09 | 2015-07-16 | Genmab B.V. | Anticorps anti-cd3 humanisés ou chimériques |
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AU2009290794A1 (en) | 2010-03-18 |
FR2935974A1 (fr) | 2010-03-19 |
AU2009290794B2 (en) | 2014-07-10 |
JP5624545B2 (ja) | 2014-11-12 |
JP2012502892A (ja) | 2012-02-02 |
CA2737218A1 (fr) | 2010-03-18 |
US20110262357A1 (en) | 2011-10-27 |
EP2346875A1 (fr) | 2011-07-27 |
US8425879B2 (en) | 2013-04-23 |
CA2737218C (fr) | 2016-10-11 |
AU2009290794A8 (en) | 2011-05-12 |
EP2346875B1 (fr) | 2014-03-19 |
FR2935974B1 (fr) | 2010-10-08 |
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