EP4003301A1 - Procédé continu de nano-émulsification par inversion de phase en concentration - Google Patents
Procédé continu de nano-émulsification par inversion de phase en concentrationInfo
- Publication number
- EP4003301A1 EP4003301A1 EP20756917.9A EP20756917A EP4003301A1 EP 4003301 A1 EP4003301 A1 EP 4003301A1 EP 20756917 A EP20756917 A EP 20756917A EP 4003301 A1 EP4003301 A1 EP 4003301A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- microchannel
- fatty
- lipid nanocapsules
- phase
- surfactants
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/51—Nanocapsules; Nanoparticles
- A61K9/5192—Processes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
- A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/10—Dispersions; Emulsions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/10—Dispersions; Emulsions
- A61K9/107—Emulsions ; Emulsion preconcentrates; Micelles
- A61K9/1075—Microemulsions or submicron emulsions; Preconcentrates or solids thereof; Micelles, e.g. made of phospholipids or block copolymers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/10—Dispersions; Emulsions
- A61K9/127—Synthetic bilayered vehicles, e.g. liposomes or liposomes with cholesterol as the only non-phosphatidyl surfactant
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/51—Nanocapsules; Nanoparticles
- A61K9/5107—Excipients; Inactive ingredients
- A61K9/5123—Organic compounds, e.g. fats, sugars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y5/00—Nanobiotechnology or nanomedicine, e.g. protein engineering or drug delivery
Definitions
- the present invention relates to the field of nanoemulsion formulations, more particularly the invention relates to a continuous process of nanoemulsification carried out by phase concentration inversion (IPC).
- IPC phase concentration inversion
- the present invention also relates to lipid nanocapsules that can be obtained by the process according to the invention.
- the present invention relates to the use of the lipid nanocapsules according to the invention for the encapsulation of molecules such as a pharmacologically active molecule.
- Nano formulations such as lipid nanoemulsions (NEL), solid lipid nanoparticles (NLS) or even nanostructured lipid vectors such as lipid nanocapsules (NCL)
- NNL lipid nanoemulsions
- NLS solid lipid nanoparticles
- NCL nanostructured lipid vectors
- the lipid nanocapsules kinetically very stable, are not very sensitive to changes in temperature and composition. They are of very particular interest. For example, it has been shown that these nanoformulations could be used as encapsulation and drug delivery systems (Hôrmann and Zimmer, 2016, J. Controlled Release, 223, 85-98).
- Two main techniques are used for the production of lipid nanocapsules: - High energy methods, such as high pressure homogenization (HHP) technology and ultrasound technology.
- Patent WO2001064328 describes a process for formulating lipid nanocapsules by temperature phase inversion, “IPT process”. However, since this process is based on a temperature variation over time, it also does not allow the use of heat-sensitive molecules.
- a risk of the method described lies in the difficulty of controlling the operating conditions (temperature and mixing conditions) and the variabilities in the size of the lipid nanocapsules as well as their size polydispersity index (known as PDI, Polydispersity Index). are often observed.
- the method according to the invention has the advantage of providing lipid nanocapsules having a homogeneous and controlled particle size, that is to say with a very low polydispersity.
- the method according to the invention makes it possible in particular to produce lipid nanocapsules at different scales. Indeed, unlike a "batch" process, the continuous process according to the invention can easily be transposed to an industrial scale, for example by simply putting different microfluidic reactors in parallel or by using static mixers.
- Another advantage of the process of the present invention is to be able to formulate, on demand, nanomedicines at low temperature, for example at body temperature, on an industrial scale for a production of nanomedicines on a large scale or on a laboratory scale for the production of personalized treatment.
- the invention therefore relates to a continuous nano-emulsification process characterized in that said process is carried out by concentration phase inversion (IPC) in a microfluidic reactor, and comprising the following steps:
- the surfactant (s) are chosen from nonionic hydrophilic surfactants, and mixtures thereof. In one embodiment, the surfactant (s) are chosen from mono- and di-esters of fatty acid and of polyethylene glycol, and their mixtures. In one embodiment, the surfactant (s) are chosen from mono- and di-esters of stearic acid and of polyethylene glycol, and mixtures thereof.
- the fatty substance (s) are chosen from mono-esters, di-esters and tri-esters of glycerol, mono-esters and di-esters of polyethylene glycol, and mixtures thereof. In one embodiment, the fatty substance (s) are chosen from Cs-Cis triglycerides, and mixtures thereof. In one embodiment, the fatty substance (s) are chosen from triglycerides of capric and caprylic acids and their mixtures. In one embodiment, the fatty phase further comprises one or more co-surfactants. In one embodiment, the fatty phase further comprises one or more co-surfactants chosen from nonionic surfactants. In one embodiment, the fatty phase further comprises one or more co-surfactants chosen from sorbitan monooleate or diethylene glycol mono-ethyl ether, and mixtures thereof.
- the weight ratio of the sum of the flow rates of surfactants and co-surfactants over the flow rate of fatty substances in the formulation chamber is between 0.8 and 4. In one embodiment, the weight ratio the sum of the flow rates of surfactants and co-surfactants over the flow rate of fatty substances in the formulation chamber is between 2 and 4.
- the weight ratio of the sum of the flow rates of surfactant, co-surfactants and fatty substances to the flow rate of the aqueous phase in the formulation chamber is between 0.03 and 0.3. In one embodiment, the weight ratio the sum of the flow rates of surfactant, co-surfactants and fatty substances over the flow rate of the aqueous phase in the formulation chamber is between 0.04 and 0.2.
- the fatty phase further comprises water, in a content of between 0% and 30% by weight, relative to the total weight of the fatty phase. In one embodiment, the fatty phase further comprises water, in a content of between 0% and 20% by weight, relative to the total weight of the fatty phase. In one embodiment, the fatty phase further comprises water, in a content of between 0% and 15% by weight, relative to the total weight of the fatty phase.
- the first microchannel is thermalized at a temperature between 20 ° C and 70 ° C, preferably between 30 ° C and 50 ° C.
- the second microchannel is thermalized at a temperature between 20 ° C and 70 ° C, preferably between 30 ° C and 50 ° C.
- the invention also relates to lipid nanocapsules capable of being obtained by the method as described above, said nanocapsules comprising one or more co-surfactants chosen from nonionic surfactants, preferably chosen from sorbitan monooleate or mono- ethyl ether of diethylene glycol and mixtures thereof.
- co-surfactants chosen from nonionic surfactants, preferably chosen from sorbitan monooleate or mono- ethyl ether of diethylene glycol and mixtures thereof.
- the lipid nanocapsules further comprise a thermosensitive pharmacologically active principle, preferably chosen from peptides, proteins or nucleic acids, anticancer agents, anti-infective agents or antibiotics.
- the lipid nanocapsules have a particle size of between 20 and 100 nm, preferably between 15 and 50 nm, more preferably between 20 and 35 nm. In one embodiment, the lipid nanocapsules have a polydispersity index of between 0.05 and 0.2, preferably between 0.05 and 0.1.
- the invention also relates to the use of lipid nanocapsules as described above as nanovectors of pharmacologically active principle.
- the pharmacologically active principle is a heat-sensitive active.
- Active agent relates to a compound of therapeutic or cosmetic interest.
- the active agent is a pharmacologically active molecule.
- the active agent is a cosmetic active.
- Cosmetic active relates to a substance or a mixture intended to be brought into contact with the superficial parts of the human body or with the teeth and the oral mucous membranes, with a view, exclusively or mainly, to cleaning them, to perfume them, to change their appearance, protect them, keep them in good condition or correct body odor
- Fatty substance designates a compound such as oils, lipids, lipophilic molecules and other non-polar solvents, capable of dissolving in fatty phases, but immiscible in aqueous phases at 25 ° C and atmospheric pressure .
- the aqueous phase is prepared in a first mixing chamber.
- the fatty phase is prepared in a second mixing chamber by mixing a fatty substance as defined in the present invention and a surfactant as defined in the present invention.
- the mixing chamber in which the aqueous phase is prepared is connected via a first microchannel to a formulation chamber.
- the mixing chamber in which the fatty phase is prepared is connected via a second microchannel to said formulation chamber.
- “Formulation chamber” designates the place where said fatty phase and said aqueous phase are brought into contact in order to cause the nanoemulsification process, leading to the formation of the lipid nanocapsules according to the invention.
- “Hydrophilic” relates to a molecule or portion of a molecule being negatively or positively charged or neutral, capable of forming hydrogen bonds, allowing easier dissolution in water than in oil or other solvents.
- Polydispersity index designates in the case of a monomodal size distribution, the ratio of the variance of the size of the particles to the square of the mean size of the particles.
- Lipophilic concerns a chemical compound capable of dissolving in fatty phases such as oil, lipids and other non-polar solvents.
- Microchannel concerns a channel whose characteristic dimension allows the flow of fluids such as liquids or gases.
- the microchannel can be delimited by a lower wall, an upper wall and two opposite side walls; the distance between the opposing side walls is the characteristic distance.
- the microchannel has a characteristic distance of between about 100 mhi to about 2000 mhi.
- the microchannel has a characteristic distance between 100 mhi and 1500 ⁇ m.
- the microchannel has a characteristic distance between 500 ⁇ m and 1500 ⁇ m.
- the microchannel has a characteristic distance between 800 and 1200 ⁇ m.
- the microchannel has a characteristic distance between 100 ⁇ m and 500 ⁇ m.
- the microchannel has a characteristic distance between 100 and 300 ⁇ m.
- the microfluidic channel can also be a cylindrical channel, the diameter of which is the characteristic distance.
- microfluidic relates to a structure comprising at least one microchannel.
- microfluidics relates to a structure comprising at least two microchannels.
- microfluidics relates to a structure comprising at least three microchannels.
- lipid nanocapsules relates to a nanoparticle consisting of a liquid or semi-liquid core at room temperature, coated with a film that is solid at room temperature.
- the lipid nanocapsules comprise a core consisting of one or more fatty substances and a crown consisting of one or more surfactants and / or co-surfactants.
- the lipid nanocapsules have a particle size between 15 and 120 nm. In one embodiment, the lipid nanocapsules have a particle size between 15 and 70 nm. In one embodiment, the lipid nanocapsules have a particle size between 20 and 120 nm. In one embodiment, the lipid nanocapsules have a particle size between 20 and 100 nm. In one embodiment, the lipid nanocapsules have a particle size between 20 and 50 nm. In one embodiment, the lipid nanocapsules have a particle size between 50 and 100 nm. In one embodiment, the lipid nanocapsules have a particle size between 15 and 50 nm. In one embodiment, the lipid nanocapsules have a particle size between 20 and 35 nm. In one embodiment, the lipid nanocapsules have a particle size between 35 and 50 nm.
- Nano-emulsification refers to a process consisting of dispersing two immiscible liquid phases, such as water and oil, but which through specific operations succeed in having a macroscopically homogeneous, but microscopically heterogeneous, appearance.
- One of the phases will be dispersed in the second phase in the form of nano-droplets or liquid nanoparticles.
- the lipid nanodroplets or nanoparticles are lipid nanocapsules as described above.
- Nano-emulsion relates to an emulsion produced by nano-emulsification, composed of nano-droplets or nano-particles with a size in a range from 15 nm to 120 nm.
- a nanoemulsion is an emulsion which comprises nanodroplets or nanoparticles with a size in the range of 15nm to 70nm.
- a nano-emulsion is an emulsion that includes nano-droplets. or nano-particles with a size in the range of 20 nm to 120 nm.
- a nanoemulsion is an emulsion which comprises nanodroplets or nanoparticles with a size in the range of 20nm to 100nm.
- a nanoemulsion is an emulsion which comprises nanodroplets or nanoparticles with a size in the range of 20nm to 50nm.
- the nano-droplets or the lipid nanoparticles are lipid nanocapsules as described above.
- “Oily phase” or “oily phase” are equivalent terms. They denote a phase comprising at least 50% of one or more fatty substances immiscible in water at 25 ° C and atmospheric pressure. In one embodiment, they denote a phase comprising at least 60% of one or more fatty substances immiscible in water at 25 ° C and atmospheric pressure. In one embodiment, they denote a phase comprising at least 70% of one or more fatty substances immiscible in water at 25 ° C and atmospheric pressure. In one embodiment, they denote a phase comprising at least 80% of one or more fatty substances immiscible in water at 25 ° C and atmospheric pressure.
- “Pharmacologically active molecule” relates to a compound of therapeutic interest. Primarily, a pharmacologically active molecule may be indicated for the treatment or prevention of diseases.
- Treatment of a disease refers to the reduction or elimination of at least one adverse effect or symptom of a disease, disorder or condition associated with the deficiency of an organ, tissue or cellular function.
- the term “preventing disease” refers to preventing the onset of a symptom.
- Heat-sensitive active agent relates, within the meaning of the invention, to a molecule which can undergo a modification of its chemical structure due to the rise in temperature. In one embodiment, the molecule is cut into one or more fragments. In one embodiment, the molecule undergoes degradation of its biological activity. In one embodiment, the molecule undergoes degradation of its pharmacological activity.
- the active agent thermosensitive has a sensitivity to a temperature above 70 ° C, preferably above 50 ° C.
- the heat-sensitive active agent is a pharmacologically active principle.
- the heat-sensitive active agent is a heat-sensitive cosmetic active.
- the heat-sensitive active agent is chosen from peptides, proteins, nucleic acids, anticancer agents, anti-infective agents or antibiotics.
- surfactant concerns an amphiphilic compound which, by virtue of this particular structure, makes it possible to lower the free energy of interfaces, for example the oil / water or air / water interfaces.
- a surfactant is a compound which modifies the interfacial tension between two surfaces. Surfactants facilitate the formation of drops or bubbles by reducing the interfacial tension.
- SOWR designates the weight ratio of the sum of the flow rates of surfactants, co-surfactants and fatty substances over the flow rate of the aqueous phase in the formulation chamber.
- the present invention relates to a continuous nano-emulsification process characterized in that said process is carried out by concentration phase inversion (IPC) in a microfluidic reactor, and comprising the following steps:
- the method according to the invention comprises a step of injecting an aqueous phase into a first microchannel, the first microchannel opening into a formulation chamber.
- the aqueous phase comprises at least 90% by weight of water.
- the aqueous phase comprises at least 95% by weight of water.
- the aqueous phase comprises at least 98% by weight of water.
- the aqueous phase consists of water.
- the water is MilliQ ultrapure water filtered through 0.2 mhi.
- the aqueous phase further comprises an active agent.
- the active agent is a heat-sensitive active.
- the active agent is a heat-sensitive pharmacologically active ingredient.
- the active agent is a heat-sensitive cosmetic active.
- the heat-sensitive active agent is hydrophilic in nature.
- the heat-sensitive active agent is selected from peptides, proteins, nucleic acids, anticancer agents or anti-infective agents.
- the aqueous phase is injected into the formulation chamber.
- the aqueous phase is prepared in a mixing chamber.
- the outlet of the mixing chamber is connected via said first microchannel to the formulation chamber.
- the mixing chamber is of the static mixer type, that is to say a device for continuously mixing aqueous phases.
- the outlet of the mixing chamber is connected via said first microchannel to the formulation chamber.
- the mixing chamber is of the stirred tank type, that is to say that the aqueous phases are mixed by mechanical action.
- the outlet of the mixing chamber is connected via said first microchannel to the formulation chamber.
- the first microchannel is made of a polymer. In one embodiment, the first microchannel is made of a polymer selected from polyaryletherketones (PE AK). In one embodiment, the first microchannel is made of polyetheretherketone (PEEK).
- PE AK polyaryletherketones
- PEEK polyetheretherketone
- the first microchannel is made of silica.
- the first microchannel is made of silicon. In one embodiment, the first microchannel is made of glass.
- the first microchannel is made of polytetrafluoroethylene (PTFE).
- PTFE polytetrafluoroethylene
- the first microchannel is a parallelepipedal channel.
- the characteristic distances of the channel are depth and width.
- the first microchannel has a depth of between 100mh and 1500mh.
- the first microchannel has a width of between 100 ⁇ m and 1500 mhi.
- the first microchannel is a cylindrical channel.
- the characteristic distance of the channel is the diameter.
- the first microchannel has a characteristic distance between 200 ⁇ m and 2000 ⁇ m.
- the first microchannel has a characteristic distance between 500 ⁇ m and 1500 ⁇ m.
- the first microchannel has a characteristic distance between 800 and 1200 ⁇ m.
- the injection of the aqueous phase into the first microchannel is carried out by means of a syringe pump pump.
- the injection of the aqueous phase into the first microchannel is carried out by means of a ISCO 100DX syringe pump.
- the injection of the aqueous phase into the first microchannel is accomplished by means of a Harvard Apparatus PHD Ultra syringe pump. In one embodiment, the injection of the aqueous phase into the first microchannel is carried out by means of an Elveflow OBI MK3 pressure controller.
- the flow rate of aqueous phase in the first microchannel is between 100 qL / min and 500,000 pL / min, preferably between 1000 pL / min and 72,500 pL / min.
- the first microchannel is thermalized, that is to say permanently maintained at a set temperature. In one embodiment, the first microchannel is thermalized by a water circulation system via the use of a thermostated bath.
- the first microchannel is thermalized at a temperature between 20 ° C and 70 ° C. In one embodiment, the first microchannel is thermalized at a temperature of 20 ° C, 25 ° C, 30 ° C, 35 ° C, 40 ° C, 45 ° C, 50 ° C, 55 ° C, 60 ° C , 65 ° C, 70 ° C. the first microchannel is thermalized at a temperature between 20 ° C and 30 ° C. In a preferred embodiment, the first microchannel is thermalized at a temperature between 30 ° C and 50 ° C.
- the method according to the invention comprises a step of injecting into a second microchannel of a fatty phase comprising one or more fatty substances immiscible in said aqueous phase, and one or more surfactants, the second microchannel opening into the formulation chamber.
- the fatty phase is injected into the formulation chamber.
- the fatty phase is prepared in a mixing chamber.
- the outlet of the mixing chamber is connected via said second microchannel to the formulation chamber.
- the mixing chamber is of the static mixer type, that is to say a device for continuously mixing fatty phases.
- the output of the static mixer is connected via said second microchannel to the formulation chamber.
- the mixing chamber is of the stirred tank type, that is to say that the fatty phases are mixed by mechanical action.
- the outlet of the stirred tank is connected via said second microchannel to the formulation chamber.
- the weight ratio of the sum of the flow rates of surfactants and co-surfactants over the flow rate of fatty substances (SOR) in the formulation chamber is between 0.8 and 4. In one embodiment, the weight ratio of the sum of the flow rates of surfactants and co-surfactants to the flow rate of fatty substances (SOR) in the formulation chamber is between 2 and 4.
- the second microchannel is made of a polymer. In one embodiment, the second microchannel is made of a polymer selected from polyaryletherketones (PEAK). In one embodiment, the second microchannel is made of polyetheretherketone (PEEK).
- PEAK polyaryletherketones
- PEEK polyetheretherketone
- the second microchannel is made of silica.
- the second microchannel is made of silicon. In one embodiment, the second microchannel is made of glass.
- the second microchannel is a parallelepipedal channel.
- the characteristic distances of the canal are depth and width.
- the second microchannel has a depth of between 100mh and 1500mh.
- the second microchannel has a width between 100 mhi and 1500 mhi.
- the second microchannel is a cylindrical channel.
- the characteristic distance of the channel is the diameter.
- the second microchannel has a characteristic distance of between 100 mhi and 1500 mhi.
- the second microchannel has a characteristic distance between 500 ⁇ m and 1500 mhi.
- the second microchannel has a characteristic distance between 800 and 1200 ⁇ m.
- the second microchannel has a characteristic distance between 100 ⁇ m and 500 ⁇ m.
- the second microchannel has a characteristic distance of between 100 and 300 ⁇ m.
- the injection of the fatty phase into the second microchannel is carried out by means of a syringe pump. In one embodiment, the injection of the fatty phase into the second microchannel is carried out by means of an ISCO 100DX syringe pump. In one embodiment, the injection of the fatty phase into the second microchannel is performed using a Harvard Apparatus PHD 2000 infusion syringe pump. In one embodiment, the injection of the aqueous phase into the second microchannel is performed by means of an Elveflow OBI MK3 pressure controller.
- the flow rate of fatty phase in the second microchannel is between 50 ⁇ L / min and 500,000 ⁇ L / min. In one embodiment, the flow rate of fatty phase in the second microchannel is between 300 pL / min and 10,000 pL / min. In one embodiment, the flow rate of fatty phase in the second microchannel is between 100 pL / min and 500,000 pL / min. In one embodiment, the flow rate of fatty phase in the second microchannel is between 50 pL / min and 300 pL / min. In one embodiment, the flow rate of fatty phase in the second microchannel is between 100 pL / min and 300 pL / min.
- the fatty phase flow rate in the second microchannel is between 300 pL / min and 500 pL / min. In one embodiment, the flow rate of fatty phase in the second microchannel is between 500 pL / min and 1000 pL / min.
- the second microchannel is thermalized, that is to say permanently maintained at a set temperature. In one embodiment, the second microchannel is thermalized by a water circulation system via the use of a thermostated bath.
- the second microchannel is thermalized at a temperature between 20 ° C and 70 ° C. In one embodiment, the second microchannel is thermalized at a temperature of 20 ° C, 25 ° C, 30 ° C, 35 ° C, 40 ° C, 45 ° C, 50 ° C, 55 ° C, 60 ° C , 65 ° C, 70 ° C. the second microchannel is thermalized at a temperature between 20 ° C and 30 ° C. In a preferred embodiment, the second microchannel is thermalized at a temperature between 30 ° C and 50 ° C. In one embodiment, the surfactant (s) of the fatty phase are chosen from nonionic hydrophilic surfactants, and mixtures thereof.
- the surfactant (s) of the fatty phase are chosen from mono- and di-esters of fatty acid and of polyethylene glycol, and mixtures thereof. In one embodiment, the surfactant (s) of the fatty phase are chosen from mono- and di-esters of stearic acid and of polyethylene glycol, and mixtures thereof. In one embodiment, the fatty phase surfactant is Kolliphor ® HS 15 from BASF. In one embodiment, the fatty phase comprises one or more surfactants in a content of between 40% and 65% by weight, relative to the total weight of the fatty phase. In one embodiment, the fatty phase comprises one or more surfactants in a content of between 45% and 65% by weight, relative to the total weight of the fatty phase.
- the fatty phase comprises one or more surfactants in a content of between 45% and 55% by weight, relative to the total weight of the fatty phase. In one embodiment, the fatty phase comprises one or more surfactants in a content of between 55% and 65% by weight, relative to the total weight of the fatty phase.
- the fatty substance (s) of the fatty phase are chosen from glycerol mono-esters, di-esters and tri-esters, polyethylene glycol mono-esters and di-esters, and mixtures thereof. In one embodiment, the fatty substance (s) of the fatty phase are chosen from Cs-Cis triglycerides, and mixtures thereof. In one embodiment, the fatty substance (s) are chosen from triglycerides of capric and caprylic acids and their mixtures. In one embodiment, the fat of the fatty phase is Labrafac ® WL 1349 Gattefosse. In one embodiment, the fatty substance of the fatty phase is Captex ® 8000 from Abitec.
- the fat of the fat phase is Labrafil ® Ml 944 CS from Gattefosse (mixture of mono-, di- and triglycerides, PEG-6 oleate mono- and di triesters).
- the fatty substance of the fatty phase is Ethyl Oleate.
- the fatty substance of the fatty phase is Ethyl Palmitate.
- the fatty substance of the fatty phase is Glyceryl Oleate.
- the fatty phase comprises one or more fatty substances in a content of between 20% and 60% by weight, relative to the total weight of the fatty phase. In one embodiment, the fatty phase comprises one or more fatty substances in a content of between 25% and 55% by weight, relative to the total weight of the fatty phase. In one embodiment, the fatty phase comprises one or more fatty substances in a content of between 25% and 35% by weight, relative to the total weight of the fatty phase. In one embodiment, the fatty phase comprises one or more fatty substances in a content of between 35% and 55% by weight, relative to the total weight of the fatty phase.
- the fatty phase further comprises one or more co-surfactants.
- the co-surfactant (s) are chosen from lipophilic surfactants and their mixtures.
- the co-surfactant of the fatty phase is a phospholipid chosen from lecithins, phosphatilglycerol, phophatidylinositol, phosphatidylserine, phophatidic acid, phosphatidylethanolamine and their mixtures.
- the co-surfactant (s) are chosen from nonionic surfactants and their mixtures.
- the co-surfactant is chosen from sorbitan esters.
- the co-surfactant is sorbitan monooleate. In one embodiment, the co-surfactant is Span 80 ® from BASF. In one embodiment, the co-surfactant is diethylene glycol mono-ethyl ether. In one embodiment, the co-surfactant is Transcutol ® HP Gattefossé.
- the fatty phase further comprises one or more cosurfactants in a content of between 0% and 20% by weight, relative to the total weight of the fatty phase. In one embodiment, the fatty phase further comprises one or more co-surfactants in a content of between 0% and 10% by weight, relative to the total weight of the fatty phase. In one embodiment, the fatty phase further comprises one or more co-surfactants in a content of between 10% and 20% by weight, relative to the total weight of the fatty phase. In one embodiment, the fatty phase further comprises water. In one embodiment, the fatty phase further comprises water in a content of between 0% and 30% by weight, relative to the total weight of the fatty phase. In one embodiment, the fatty phase further comprises water in a content of between 0% to 20%. In one embodiment, the fatty phase further comprises water in a content of between 0% to 15%.
- the fatty phase further comprises an active agent.
- the active agent is a heat-sensitive active.
- the active agent is a heat-sensitive pharmacologically active ingredient.
- the active agent is a heat-sensitive cosmetic active.
- the heat-sensitive active agent is hydrophilic in nature.
- the heat-sensitive active agent is lipophilic in nature.
- the heat-sensitive active agent is chosen from among peptides, proteins or nucleic acids, anticancer agents or anti-infective agents.
- the method according to the invention comprises a step c of mixing the aqueous phase and the fatty phase in the formulation chamber.
- the formulation chamber is of the “co-flow” type, that is to say that the flow of the first microchannel and the flow of the second microchannel are in the same direction and open into the formulation chamber. from the same direction.
- the formulation chamber is of the “co-flow” type and the first microchannel has a larger diameter than that of the second microchannel.
- the formulation chamber is of the “co-flow” type and the first microchannel includes the second microchannel.
- the formulation chamber is of type "T", that is to say that the flow of the first microchannel and the flow of the second microchannel in the formulation chamber form a "T" with the flow of output channel.
- the flow of the first microchannel and the flow of the second microchannel in the mixing chamber form an angle of between 30 ° and 150 ° with the flow of the outlet channel. In one embodiment, the flow of the first microchannel and the flow of the second microchannel in the mixing chamber form an angle of 45 ° with the flow of the outlet channel.
- the flow of the first microchannel and the flow of the second microchannel in the mixing chamber form an angle of 135 ° with the flow of the outlet channel.
- the formulation chamber is of the “Flow focusing” type (also called hydrodynamic focusing), ie the flow of the first microchannel is focused in a narrowing by the flow of a second microchannel and of 'a third microchannel.
- the flow of the first microchannel and the flow of the second or third microchannel in the mixing chamber form an angle of between 15 ° and 90 °.
- the first microchannel is thermalized at a temperature between 20 ° C and 70 ° C. In one embodiment, the first microchannel is thermalized at a temperature of 20 ° C, 25 ° C, 30 ° C, 35 ° C, 40 ° C, 45 ° C, 50 ° C, 55 ° C, 60 ° C , 65 ° C, 70 ° C. the first microchannel is thermalized at a temperature between 20 ° C and 30 ° C. In a preferred embodiment, the first microchannel is thermalized at a temperature between 30 ° C and 50 ° C.
- the weight ratio of the sum of the flow rates of surfactants, co-surfactants and fatty substances on the flow rate of the aqueous phase (SOWR) in the formulation chamber is between 0.01 and 0.30. In one embodiment, the weight ratio of the sum of the flow rates of surfactant, co-surfactants and fatty substances to the flow rate of the aqueous phase (SOWR) in the formulation chamber is between 0.03 and 0.3 , preferably is between 0.04 and 0.2.
- the method according to the invention comprises a step of recovering, at the outlet from the formulation chamber, a suspension comprising lipid nanocapsules in an aqueous phase.
- the method of the present invention as described above allows the formulation of a lipid nanocapsule at low temperature.
- This embodiment is particularly advantageous for the encapsulation of pharmacologically active principle. temperature sensitive.
- the lipid nanocapsules obtained at low temperature also have a lower polydispersity, allowing the production of nanomedicines of uniform size with a view to optimal efficiency in targeting and cell internalization.
- the lipid nanocapsules have a particle size between 15 and 120 nm. In one embodiment, the lipid nanocapsules have a particle size between 15 and 70 nm. In one embodiment, the lipid nanocapsules have a particle size between 20 and 120 nm. In one embodiment, the lipid nanocapsules have a particle size between 20 and 100 nm. In one embodiment, the lipid nanocapsules have a particle size between 15 and 50 nm. In one embodiment, the lipid nanocapsules have a particle size between 20 and 50 nm. In one embodiment, the lipid nanocapsules have a particle size between 50 and 100 nm. In one embodiment, the lipid nanocapsules have a particle size between 20 and 35 nm. In one embodiment, the lipid nanocapsules have a particle size between 35 and 50 nm.
- the lipid nanocapsules have a polydispersity index of between 0.05 and 0.2. In one embodiment, the lipid nanocapsules have a polydispersity index of between 0.05 and 0.15. In one embodiment, the lipid nanocapsules have a polydispersity index of between 0.05 and 0.1.
- the invention also relates to lipid nanocapsules that can be obtained by the process according to the invention.
- the lipid nanocapsules comprise a core consisting of one or more fatty substances and a crown consisting of one or more surfactants and / or co-surfactants.
- the lipid nanocapsules are metastable and withstand a dilution for which the concentration of the surfactants is less than their critical micellar concentration.
- the fatty substance (s) are chosen from mono-esters, di-esters and tri-esters of glycerol, mono-esters and di-esters of polyethylene glycol, and their mixtures, preferably from triglycerides in Cs-Cis, and mixtures thereof, plus preferentially from the triglycerides of capric and caprylic acids and their mixtures.
- the surfactant (s) are chosen from nonionic hydrophilic surfactants, and mixtures thereof, preferably from mono- and di-esters of fatty acid and of polyethylene glycol, and mixtures thereof, more preferably from mono- and di-esters of stearic acid and of polyethylene glycol, and mixtures thereof.
- the co-surfactant (s) are chosen from nonionic surfactants, preferably from sorbitan monooleate or diethylene glycol mono-ethyl ether, and mixtures thereof.
- the lipid nanocapsules of the invention further comprise an active agent.
- the active agent is a heat-sensitive active.
- the active agent is a heat-sensitive pharmacologically active ingredient.
- the active agent is a heat-sensitive cosmetic active.
- the heat-sensitive active agent is selected from peptides, proteins, nucleic acids, anticancer agents or anti-infective agents.
- the lipid nanocapsules of the invention are part of the composition of a medicament for administration. In one embodiment, the lipid nanocapsules of the invention form part of the composition of a medicament intended to be administered enterally, for example orally, rectally or buccally.
- the lipid nanocapsules of the invention form part of the composition of a medicament intended to be administered percutaneously, for example by transdermal or cutaneous route.
- the lipid nanocapsules of the invention enter into the composition of a medicament intended to be administered by the airway, for example by the nasal, auricular or pulmonary route. In one embodiment, the lipid nanocapsules of the invention enter into the composition of a medicament intended to be administered by the ocular route.
- the lipid nanocapsules of the invention form part of the composition of a medicament intended to be administered vaginally. In one embodiment, the lipid nanocapsules of the invention form part of the composition of a medicament intended to be administered parenterally, for example intravenously, intraarterially, intradermally, epidurally, subcutaneously.
- the lipid nanocapsules of the invention enter into the composition of a cosmetic product intended to be administered.
- the lipid nanocapsules have a particle size between 15 and 120 nm.
- the lipid nanocapsules have a particle size between 15 and 70 nm.
- the lipid nanocapsules have a particle size between 20 and 120 nm.
- the lipid nanocapsules have a particle size between 20 and 100 nm.
- the lipid nanocapsules have a particle size between 15 and 50 nm.
- the lipid nanocapsules have a particle size between 20 and 50 nm.
- the lipid nanocapsules have a particle size between 50 and 100 nm. In one embodiment, the lipid nanocapsules have a particle size between 20 and 35 nm. In one embodiment, the lipid nanocapsules have a particle size between 35 and 50 nm.
- the lipid nanocapsules have a polydispersity index of between 0.05 and 0.2. In one embodiment, the lipid nanocapsules have a polydispersity index of between 0.05 and 0.15. In one embodiment, the lipid nanocapsules have a polydispersity index of between 0.05 and 0.1.
- the sizes of lipid nanocapsules are measured by the dynamic light scattering method (DLS method).
- the invention also relates to the use of the lipid nanocapsules according to the invention as active agent nanovectors.
- the active agent is a pharmacologically active ingredient. In one embodiment, the active agent is a cosmetic active.
- the invention also relates to the use of the lipid nanocapsules according to the invention as nanovectors of pharmacologically active principle.
- the pharmacologically active principle is a heat-sensitive active.
- the pharmacologically active principle is chosen from proteins, peptides, oligonucleotides and DNA plasmids.
- the pharmacologically active principle is chosen from anti-infectives, for example antimycotics and antibiotics.
- the pharmacologically active principle is chosen from anticancer drugs.
- the pharmocologically active principle is chosen from active principles intended for the Central Nervous System, such as antiparkinson drugs and more generally active principles for treating neurodegenerative diseases.
- the pharmacologically active principle is lipophilic in nature. In one embodiment, the pharmacologically active principle is dissolved or dispersed in the heart of the lipid nanocapsules.
- the pharmacologically active principle is incorporated into the core of the nanocapsule. In one embodiment, the pharmacologically active principle is incorporated into the fatty phase. In one embodiment, the pharmacologically active principle is attached to the surface of the lipid nanocapsules.
- the pharmacologically active principle is of a water-soluble or dispersible nature in the aqueous phase.
- the pharmacologically active principle of a water-soluble or dispersible nature in the aqueous phase is fixed to the surface of the lipid nanocapsules by introducing said active principle into the solution within which the stable lipid nanoparticles obtained are dispersed at the end. of the method according to the invention.
- the pharmacologically active principle of a water-soluble or dispersible nature in the aqueous phase is fixed to the surface of the lipid nanocapsules by introducing said pharmocologically active principle into the water included in the fatty phase before the formulation of the stable lipid nanoparticles obtained at the outcome of the process according to the invention.
- the invention also relates to the use of the lipid nanocapsules according to the invention as cosmetic active nanovectors.
- the cosmetic active is a heat-sensitive active.
- the invention also relates to lipid nanocapsules according to the invention for their use as a medicament.
- the invention also relates to the use of the lipid nanocapsules according to the invention in the manufacture of a medicament.
- the invention also relates to a method of treatment in a subject in need thereof, said method comprising administering to said subject a therapeutically effective amount of at least one lipid nanocapsule according to the invention.
- Figure 1 is a diagram of the device used in the method according to the invention according to a first embodiment (called "co-flow” type).
- the microchannel 1 makes it possible to inject the aqueous phase into the formulation chamber 3.
- the microchannel 2 makes it possible to inject the fatty phase into the formulation chamber 3.
- the formulation chamber 3 thus makes it possible to form the lipid nanocapsules according to the invention. .
- Figure 2 compares the results in terms of size of lipid nanoparticles and polydispersity index of a microfluidic process according to the present invention and a comparative batch process.
- Figure 3 compares the results in terms of size of lipid nanoparticles and polydispersity index of a microfluidic process according to the present invention at different flow rates.
- FIG. 4 is a diagram of the device used in the method according to the invention according to a second embodiment (referred to as “T at 45 °” type).
- the microchannel 4 and the microchannel 5 of the mixing chamber form an angle of 45 ° with the microchannel 7.
- the microchannel 4 makes it possible to inject the aqueous phase into the formulation chamber 6.
- the microchannel 5 makes it possible to inject the fatty phase in the formulation chamber 6.
- the formulation chamber 6 thus makes it possible to form the lipid nanocapsules according to the invention and to recover them via the microchannel 7.
- FIG. 5 is a diagram of the device used in the method according to the invention according to a third embodiment (referred to as “T” type).
- the microchannel 8 and the microchannel 9 of the mixing chamber form an angle of 135 ° with the microchannel 10 outlet.
- FIG. 6 is a diagram of the device used in the method according to the invention according to a second embodiment (referred to as the “Flow focusing” type formulation chamber).
- the microchannel 14 is focused in a narrowing by the flow of the microchannel 13 and the microchannel 15 of the mixing chamber 17.
- the microchannels 13 and 15 form an angle of 90 ° with the microchannel 14.
- the microchannel 14 makes it possible to inject the phase. oily in the formulation chamber 17.
- the microchannels 13 and 15 make it possible to inject the aqueous phase into the formulation chamber 17 with the same flow rate in each of the microchannels.
- the formulation chamber 17 thus makes it possible to form the lipid nanocapsules according to the invention and to recover them via the microchannel 16.
- Example 1 Formulation of lipid nanocapsules by continuous IPC process using a "co-flow" type device
- Kolliphor ® HS 15 12-hydroxystearate of PEG 660 sold by BASF,
- Labrafac WL 1349 Triglycerides of capric and caprylic acids sold by Gattefosse,
- MilliQ ultrapure water prepared using a Millipore device
- Tetrahydrofuran used for cleaning the microfluidic system.
- Fisherband Polystat 36 thermostatic bath, to maintain the oily phase at temperature and to thermostate the injection capillaries, Silica capillary with an internal diameter of 320 ⁇ m, for supplying the formulation chamber with the fatty phase,
- ISCO 100 DX syringe pump for injecting the fatty phase into the formulation chamber.
- the first microchannel 1 (internal diameter 530 ⁇ m) allows the injection of the aqueous phase consisting of MilliQ ultrapure water.
- the second microchannel 2 (internal diameter 320 ⁇ m) allows the injection of the fatty phase consisting of a fatty substance, Labrafac ® WL 1349, and a surfactant, Kolliphor ® HS 15.
- the two microchannels 1 and 2 are connected to a T junction and are arranged in the same plane at 90 ° to each other.
- a microchannel 3 (internal diameter 530 ⁇ m) from the mixer outlet is connected to the junction fitting T so that the microchannel 2 is introduced into the capillary 3, leading to the mixing zone of the fatty and aqueous phases where it takes place the formation of lipid nanocapsules.
- the flow rates for both microchannels 1 and 2 are adjusted using the ISCO 100 DX syringe pump and Harvard Apparatus PHD 2000 infusion syringe pump, respectively.
- FIG. 2 presents the results of the characteristics of the lipid nanocapsules, size and polydispersity index. It is noted that the size of the particles is substantially equivalent for the lipid nanocapsules produced by the comparative batch process as for the lipid nanocapsules produced by the continuous process according to the invention.
- the polydispersity index is appreciably reduced for the continuous process according to the invention in particular for an SOR ratio of 1.
- the process according to the invention therefore makes it possible to obtain lipid nanocapsules which are of controlled sizes and relatively very monodisperse which is particularly suitable for the vectorization of pharmaceutical compounds.
- the process according to the invention makes it possible to be industrialized more easily by placing continuous reactors in parallel.
- Figure 3 shows the effect of flow rate on the size and polydispersity index of lipid nanocapsules. This figure shows that the increase in the flow rate makes it possible to slightly reduce the size of the particles but to significantly reduce the polydispersity index.
- Example 2 Formulation of lipid nanocapsules by continuous IPC process using a “T” type formulation chamber and syringe pumps
- Kolliphor ® HS 15 12-hydroxystearate of PEG 660 sold by BASF,
- Span ® 80 Sorbitan monooleate sold by BASF
- MilliQ ultrapure water prepared using a WATERS device
- Tetrahydrofuran used for cleaning the microfluidic system. Specific material and conditions
- PEEK Polyetheretherketone
- PEEK Polyetheretherketone
- PEEK Polyetheretherketone
- the device used in this second example is shown in FIG. 4.
- the first microchannel 4 allows the injection of the aqueous phase consisting of MilliQ ultrapure water filtered at 0.2 ⁇ m.
- the second microchannel 5 allows the injection of the fatty phase consisting of a fatty substance, Labrafac WL 1349, a surfactant, Kolliphor ® HS 15 and optionally with a co-surfactant, Span ® 80.
- the two microchannels 4 and 5 are arranged in the same plane at 45 ° to each other and are each connected at one of their ends to a syringe pump allowing the flow control of each phase.
- the two microchannels 4 and 5 open at their other ends into a formulation chamber 6 where the formation of the lipid nanocapsules takes place.
- the suspension comprising the lipid nanocapsules is recovered through microchannel 7.
- Table 2 shows comparative tests of the results of the mixing plan of different fatty phase formulations obtained by batch and continuous process.
- the temperature was set at 50 ° C, the oil phase flow rate at 425 pL / min and the S O WR ratio at 0.047.
- the sizes of the lipid nanocapsules obtained by the two methods are generally in very good agreement with an absolute mean deviation of 5.3 nm. Average sizes ranging from 25 to 100 nm, within the desired range, are observed.
- the method according to the invention is robust and makes it possible to increase the quantity of lipid nanocapsules produced without modifying the characteristics of these lipid nanocapsules.
- Table 3 shows formulations of lipid nanocapsules obtained according to the continuous process of the invention, the fatty phase composition of which consists of Kolliphor ® HS 15 (surfactant), Labraf ⁇ l ® Ml 944 CS (fatty substance) and Transcutol ® HP (co-surfactant). Comparative trials for four formulations were performed at a SOWR of 0.047 and at room temperature.
- Table 4 shows the results of tests of increasing the SOWR ratio of formulations by continuous IPC process of lipid nanocapsules having the same fatty phase composition as in Table 3.
- Example 3 Formulation of lipid nanocapsules by continuous IPC process by means of a microfluidic pilot unit coupled to a “T” type formulation chamber
- Kolliphor ® HS 15 12-hydroxystearate of PEG 660 sold by BASF,
- Labrafac ® WL 1349 Triglycerides of capric and caprylic acids sold by Gattefosse,
- Span ® 80 Sorbitan monooleate sold by BASF
- MilliQ ultrapure water prepared using a WATERS device
- Ethanol 95 ° used for cleaning the microfluidic system.
- Fisherband Polystat 36 thermosaté bath, to maintain the oily phase at temperature and thermoregulate the injection capillaries
- PEEK Polyetheretherketone
- PEEK Polyetheretherketone
- PEEK Polyetheretherketone
- OBI MK3 pressure controller to inject the fatty phase and the aqueous phase into the microfluidic chip
- the device used in this second example is shown in Figure 4.
- the first microchannel 4 allows the injection of the aqueous phase consisting of MilliQ ultrapure water filtered at 0.2 mhi.
- the second microchannel 5 allows the injection of the fatty phase consisting of a fatty substance, Labrafac ® WL 1349, a surfactant, Kolliphor ® HS 15 and possibly a co-surfactant, Span ® 80.
- the two microchannels 4 and 5 are arranged in the same plane at 45 ° to each other and are each connected to one of their ends at the bottom of a bottle.
- An overpressure of compressed air is provided by the OBI MK3 air pressure sensor in order to allow injection of the oily phase and of the aqueous phase.
- the flow of each phase is monitored by the flow meters (MFS5 and Ml 4) and the compressed air pressure is adjusted by the pressure controller in order to control the flow rates.
- the two microchannels 4 and 5 open at their other ends into a formulation chamber 6 where the formation of the lipid nanocapsules takes place.
- the suspension comprising the lipid nanocapsules is recovered through microchannel 7.
- Example 4 Formulation of nanocapsules by continuous IPC process by means of a microfluidic pilot unit coupled to a microfluidic chip
- Kolliphor ® HS 15 12-hydroxystearate of PEG 660 sold by BASF,
- Labrafac ® WL 1349 Triglycerides of capric and caprylic acids sold by Gattefosse,
- Span ® 80 Sorbitan monooleate sold by BASF
- MilliQ ultrapure water prepared using a WATERS device
- Ethanol 95 ° used for cleaning the microfluidic system.
- Fisherband Polystat 36 thermosaté bath, to maintain the oily phase at temperature and to thermostate the injection capillaries,
- PEEK Polyetheretherketone
- PEEK Polyetheretherketone
- OBI MK3 pressure controller to inject the fatty phase and the aqueous phase into the microfluidic chip
- the first microchannel 8 allows the injection of the aqueous phase consisting of MilliQ ultrapure water filtered in line at 0.2 qm.
- the second microchannel 9 allows the injection of the fatty phase consisting of a fatty substance, Labrafac ® WL 1349, a surfactant, Kolliphor ® HS 15 and possibly a co-surfactant, Span ® 80.
- the two microchannels 8 and 9 are arranged in the same plane at 90 ° to each other and are each connected to one of their ends at the bottom of a bottle.
- An overpressure of compressed air is provided by the OBI MK3 air pressure sensor in order to allow injection of the oily phase and of the aqueous phase.
- the flow rate of each phase is monitored by the flowmeters (MFS5 and Ml 4) and the compressed air pressure is adjusted by the flow controller. pressure in order to control the flow rates.
- the two microchannels open at their other ends into a mixing zone which can be constituted by an “accident” in the form of slots 11 where the formation of the lipid nanocapsules takes place.
- the suspension comprising the lipid nanocapsules is recovered through microchannel 10.
- the temperature was set at 50 ° C., the fatty phase flow rate at 106 m L / m in and the SOWR ratio at 0.05.
- Example 5 Encapsulation of Miltefosine in lipid nanocapsules formulated by continuous IPC process using a "T" type formulation chamber and syringe pumps
- Kolliphor ® HS 15 12-hydroxystearate of PEG 660 sold by BASF,
- Labrafac ® WL 1349 Triglycerides of capric and caprylic acids sold by Gattefosse,
- Span ® 80 Sorbitan monooleate sold by BASF
- MilliQ ultrapure water prepared using a WATERS device
- Tetrahydrofuran used for cleaning the microfluidic system.
- PEEK Polyetheretherketone
- PEEK Polyetheretherketone
- PEEK Polyetheretherketone
- the first microchannel 4 allows the injection of the aqueous phase consisting of MilliQ ultrapure water filtered at 0.2 qm.
- the second microchannel 5 allows the injection of the fatty phase consisting of a fatty substance, Labrafac WL 1349, of a pharmacologically active principle (anti-infective and anti-cancer), Miltefosine, of a surfactant, Kolliphor ® HS 15 and optionally of a co-surfactant, Span ® 80. Miltefosine is initially solubilized in Labrafac WL 1349 for the preparation of the fatty phase.
- the two microchannels 4 and 5 are arranged in the same plane at 45 ° to each other and are each connected at one of their ends to a syringe pump allowing the flow rate of each of the phases to be controlled.
- the two microchannels 4 and 5 open at their other ends into a formulation chamber 6 where the formation of the lipid nanocapsules takes place.
- the suspension comprising the lipid nanocapsules loaded with miltefosine is recovered via microchannel 7.
- Table 7 shows comparative tests of the results of the formulations of miltefosine lipid nanocapsules obtained by continuous IPC process.
- the temperature was set at 37 ° C, the oil phase flow rate at 425 pL / min and the SO WR ratio at 0.047.
- the sizes of the lipid nanocapsules of encapsulated Miltefosine are on the whole in very good agreement with the formulation of lipid nanocapsules without Miltefosine with an absolute mean deviation of 3.0 and 5.0 nm.
- the polydispersity indices are low and not significantly different between the formulations with or without encapsulated miltefosine.
- the Zeta potential decreases significantly little with increasing miltefosine composition with an absolute mean deviation of 0.3 and 1.1 mV.
- Table 8 shows the results of tests to increase the SOWR ratio of formulations by continuous IPC process of lipid nanocapsules loaded with miltefosine having the same fatty phase composition as in Table 7.
- the increase in the SOWR ratio for these same compositions did not show any modification of the characteristics of the lipid nanocapsules (size and polydispersity index).
- the process according to the invention is robust and easily industrialized. It allows the formulation at low temperature (37 ° C) of lipid nanocapsules loaded with a pharmacologically active principle, in particular an anti-cancer agent and an anti-infectious agent (Miltefosine).
- a pharmacologically active principle in particular an anti-cancer agent and an anti-infectious agent (Miltefosine).
- the lipid nanocapsules loaded with pharmacologically active principle have a homogeneous and controlled particle size, that is to say with a very low polydispersity of less than 0.1.
- the method according to the invention makes it possible in particular to produce lipid nanocapsules at different scales.
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Abstract
Description
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1908392A FR3099069A1 (fr) | 2019-07-24 | 2019-07-24 | Procede continu de nano-emulsification par inversion de phase en concentration |
| PCT/FR2020/051365 WO2021014109A1 (fr) | 2019-07-24 | 2020-07-24 | Procédé continu de nano-émulsification par inversion de phase en concentration |
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| EP20756917.9A Withdrawn EP4003301A1 (fr) | 2019-07-24 | 2020-07-24 | Procédé continu de nano-émulsification par inversion de phase en concentration |
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| Country | Link |
|---|---|
| US (1) | US20220273582A1 (fr) |
| EP (1) | EP4003301A1 (fr) |
| FR (1) | FR3099069A1 (fr) |
| WO (1) | WO2021014109A1 (fr) |
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| CN118178419A (zh) * | 2024-03-13 | 2024-06-14 | 南京工业大学 | 一种采用微流场反应装置制备达沙替尼纳米乳的方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2805761B1 (fr) * | 2000-03-02 | 2002-08-30 | Mainelab | Nanocapsules lipidiques, procede de preparation et utilisation comme medicament |
| FR2840532B1 (fr) * | 2002-06-11 | 2005-05-06 | Ethypharm Sa | Nanocapsules lipidiques furtives, procede de preparation et utilisation comme vecteur de principes(s) actif(s) |
| FR2939699B1 (fr) * | 2008-12-12 | 2011-05-06 | Univ Angers | Procede de preparation de nanoparticules lipidiques |
| FR2950253B1 (fr) * | 2009-09-24 | 2011-09-23 | Ethypharm Sa | Nanocapsules lipidiques, procede de preparation et utilisation comme medicament |
-
2019
- 2019-07-24 FR FR1908392A patent/FR3099069A1/fr not_active Withdrawn
-
2020
- 2020-07-24 US US17/626,914 patent/US20220273582A1/en not_active Abandoned
- 2020-07-24 EP EP20756917.9A patent/EP4003301A1/fr not_active Withdrawn
- 2020-07-24 WO PCT/FR2020/051365 patent/WO2021014109A1/fr not_active Ceased
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| Publication number | Publication date |
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| US20220273582A1 (en) | 2022-09-01 |
| WO2021014109A1 (fr) | 2021-01-28 |
| FR3099069A1 (fr) | 2021-01-29 |
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