EP3775252A1 - Procédé de purification de protéines à partir d'extrait de microalgues - Google Patents
Procédé de purification de protéines à partir d'extrait de microalguesInfo
- Publication number
- EP3775252A1 EP3775252A1 EP19720982.8A EP19720982A EP3775252A1 EP 3775252 A1 EP3775252 A1 EP 3775252A1 EP 19720982 A EP19720982 A EP 19720982A EP 3775252 A1 EP3775252 A1 EP 3775252A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- phase
- cpc
- stationary phase
- migration
- column
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K1/00—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length
- C07K1/14—Extraction; Separation; Purification
- C07K1/16—Extraction; Separation; Purification by chromatography
- C07K1/20—Partition-, reverse-phase or hydrophobic interaction chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
- B01D15/18—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns
- B01D15/1864—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns using two or more columns
- B01D15/1885—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns using two or more columns placed in parallel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
- B01D15/18—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns
- B01D15/1892—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns the sorbent material moving as a whole, e.g. continuous annular chromatography, true moving beds or centrifugal chromatography
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/405—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from algae
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P21/00—Preparation of peptides or proteins
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
- G01N2030/8809—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample
- G01N2030/8813—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample biological materials
- G01N2030/8831—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample biological materials involving peptides or proteins
Definitions
- the present invention is in the field of marine microalgae extracts, and concerns in particular a protein fraction isolated from a red microalga and its method of production.
- Phycobiliproteins can be obtained in large quantities from algae or microalgae.
- Phycobiliproteins are of four types: allophycocyanin, phycocyanin, phycoerythrin and phycoerythrocyanin. Such proteins are recovered after cell disintegration and solid-liquid separation steps.
- the supernatant obtained which contains the phycobiliprotein can be isolated and / or purified using a capture technique (absorption) on ion exchange resin, at least one isoelectric precipitation optionally coupled to liquid / liquid extractions using bi-aqueous systems.
- aqueous two-phase systems such as ATPS (English term: aqueous two phase system), which may include PEG 6000 ( polyethylene glycol of molar mass: 6000 g mol 1 ) and a phosphate buffer in a medium at pH 7.
- ATPS American term: aqueous two phase system
- PEG 6000 polyethylene glycol of molar mass: 6000 g mol 1
- phosphate buffer in a medium at pH 7.
- the present invention aims to improve the prior art techniques for extracting and purifying phycobiliproteins with a yield greater than 70% and a high degree of purity, in a simple, fast manner and by implementing a method which is part of a sustainable development approach.
- CPC centrifugal partition chromatography
- the term "ATPS" refers to an aqueous system of two-phase solvents, examples of such systems are described in the article by Arafat M. Goja et al. J Bioproces Biotechniq 2013, 4: 1.
- the ATPS system implemented in the context of the invention is advantageously a system comprising polyethylene glycol (PEG), such as the aqueous system of two-phase solvents contains from 8 to 15% by weight of polyethylene glycol of molar mass from 2000 to 8000 g. mol 1 , or 3500 to 6500 g. mol 1 , and 10 to 17% by weight of K 2 HPO 4 / KH 2 PO 4 at pH 7.
- PEG polyethylene glycol
- the ATPS system used comprises polyethylene glycol with a molar mass of 6000 g. mol 1 which is qualified as PEG 6000.
- polyethylene glycol of molar mass of 1000, 2000 and 8000 g. mol 1 will also be qualified respectively as PEG 1000, PEG 2000 and PEG 8000.
- the inventors have unexpectedly shown that the ATPS two-phase solvent system used in carrying out CPC chromatography makes it possible to obtain a protein extracted from a microalgae with an unprecedented yield and degree of purity.
- a CPC performed under such conditions has proved particularly effective and quick to perform for the purification of a phycobiliprotein. This process makes it possible to have short purification cycles from the extract, while operating with very small volumes of liquids.
- the overall yield of extracted protein is greater than 70% and the proteins obtained are not, or very slightly, denatured.
- the method according to the invention implements the following steps:
- step b) an injection of the mixture obtained in step a) into the CPC column by starting a first pump adapted to pass the phase to be injected contained in the first container in contact with the stationary phase in a first direction of migration;
- the method described above comprises a step d. pumping by configuring the pumping in the opposite direction to the aforementioned first direction of migration, described as second direction of migration (upward mode (AM) versus downward mode (DM)).
- This mode of operation of the CPC chromatography is called dual mode ("dual mode") and allows alternating stationary and mobile phases during separation. It is thus possible to make the stationary phase mobile and conversely to make the mobile phase stationary.
- This step allows the extrusion recovery of the protein of interest, and also allows the reconditioning of a portion of the column with recycled stationary phase injected into the column.
- the inventors have shown that such a process makes it possible to finely separate phycobiliproteins from other very close molecules of structure and / or mass.
- the CPC column comprises cells of substantially spherical geometry. This configuration of the cells makes it possible to optimize the purification efficiency of phycobiliproteins.
- the internal volume of all the cells is advantageously such that the retention in the stationary phase is between 50 and 80%, or even 65 and 70%.
- This configuration of the cells makes it possible to promote the decantation of the two-phase system (ATPS) and thus to achieve better stationary phase retentions than systems operating with cells having other geometries, such as "twin cell” cells.
- the number of cells is less than or equal to 50.
- the inventors have shown that the use of CPC under the conditions according to the invention made it possible to use relatively short columns of less than 50 cells while remaining effective: this facilitates handling and reduces the necessary eluent volumes.
- the method according to the invention uses two CPC chromatography columns, a first CPC column and a second CPC column, which operate sequentially. Sequential operation involves mounting two columns, first and second columns, in parallel.
- step c) is carried out in the second column thus carrying out the purification of the captured protein: impurities that can be entrained by the mobile phase (the duration of steps b) and d) being equal to that of step c) ); and
- step b1) an injection of a first volume of the mixture obtained in step a1) in a first CPC column by starting a first pump adapted to pass the phase to be injected contained in the first container in contact with the phase stationary in a first direction of migration;
- c1) a washing to remove impurities by starting a second pump adapted to transit the mobile phase contained in a second container in contact with the stationary phase in the first direction of migration;
- step b2) injecting a second volume of the mixture obtained in step a) into the second CPC column by starting the first pump adapted to pass the phase to be injected contained in the first container in contact with the stationary phase in the first direction of migration;
- the process according to the invention comprises at least one filtration step of at least one of the two phases chosen from the stationary phase (enriched in BPE) and the mobile phase (to be recycled), by membrane filtration.
- the process according to the invention more advantageously comprises at least three membrane filtration steps for filtering once the mobile phase and twice the stationary phase enriched in BPE.
- a membrane process makes it possible to recover the proteins with an improved degree of purity, and to be able to recycle the bi-phasic solvent system.
- Purified water is added during this step for the realization of the filtration and in order to recover the maximum of material.
- the purified water is preferably deionized water by distillation, filtration and / or electrodialysis.
- the membrane filters implemented according to the invention are configured in the following manner: in which a first membrane filter filters the stationary phase recovered in steps e1) and e2) to improve the purification of the substance of interest which is isolated; a second membrane filter filters the stationary phase eluted from the first membrane filter for recycling; and a third membrane filter filters the mobile phase recovered at the column outlet for recycling.
- the membranes used are preferably membranes capable of ultrafiltration or nanofiltration, such as the range marketed by NADIR®.
- the injection into the two CPC columns carried out according to the process of the invention of at least one of the liquids chosen from the microalgae extract dispersed in a mixture comprising an aqueous system of two-phase solvents, the phase mobile and the stationary phase is controlled by three-way valves, designated first, second and third three-way valves.
- the mobile and stationary phases at the CPC column output are separated sequentially by a four-way valve and a fourth three-way valve.
- a concentrated microalgal porphyridium cruentum extract - stored overnight in the fridge - is thawed by centrifugation.
- the whole is inserted into a 15 mL flask (a 15 mL plastic flask from Fisherbrand®) and then placed for 15 minutes in an ultrasonic bath known under the trade name VWR® Ultrasonic Cleaner.
- rpm means "rotation per minute” in English, its French translation being “revolutions per minute”.
- the supernatant is then passed on a CPC column under the conditions detailed in point II. of this experimental part.
- Tests were also conducted with PEG 1000, 2000 and 8000 respectively (polyethylene glycol of molar mass: 1000, 2000 and 8000 g, mol -1 ).
- UV-visible spectrum is measured between 250 and 800 nm for each of the phases for the systems studied.
- the purity index will be evaluated for the characteristic wavelengths of phycobiliproteins (550nm for BPE) and the wavelength characteristic of total proteins (280nm)
- CPC centrifugal partition chromatography
- the chromatography part comprises all the components of a centrifugal partition chromatography apparatus:
- An AP100 pump sold by Armen Instrument TM, allowing the various phases of the system to be set in motion.
- the connectors used on this device are 1 / 8th low-pressure PTFE connectors marketed by UpChurch®.
- the visual column studied is connected to the system via two rotating joints marketed by the company Armen TM.
- the UV / visible signal is recorded by a spectra detector 100 (Thermo separation, San Jose, US).
- the column is made of polycarbonate and has a volume of 48 ml (ie 1.3 ml per cell).
- the column is pre-equilibrated at 65-70% retention by eluting the saline phase (which comprises the phosphate buffer system) at 35 mL / min and 1600 rpm (revolutions per minute) through the phase comprising the PEG in descending mode during 2 minutes 30 to 3 minutes.
- saline phase which comprises the phosphate buffer system
- the extract to be treated is then injected in descending mode at 20 ml / min and 1600 rpm.
- the capture is then performed in the column.
- the capture consists of a transfer of the target molecule (s) to the stationary phase for which they have a high affinity (partition coefficient KD> 5).
- Fresh mobile phase elution is performed at 20 mL / min and 1600 rpm in order to remove molecules with less affinity for the stationary phase (KD ⁇ 5).
- the recovery of the target protein is carried out in ascending (AM) mode, that is to say that the "dual mode" is activated, eluting at 20 ml / min and 1600 rpm.
- the entire purification process on CPC is shown in FIG. 2.
- the retentions of the ATPS systems 2 and 3 were measured and are reported in Table 2 (the operating conditions corresponding to the measurements reported in Table 2 are 10 to 40 mL / min in flow with a centrifugal acceleration of 155 xg): Table 2.
- the recovery of the BPE and the regeneration of the phases (PEG and salts) is carried out by membrane filtration.
- the membrane chosen for the filtration is a membrane (or membrane filter) for ultrafiltration (UF) marketed under the reference RM UH050 P1016 by the company NADIR®, and having a cutoff threshold at 50 kDa.
- a membrane for nanofiltration (NF) sold by the company NADIR® can be used alternately or in combination.
- FIG. 4 illustrates the entire process which integrates the membrane filtration steps. IV. CPC column purification
- a first column 1 is put into operation and injected with microalgal extract dispersed in ATPS from a first container 2 (see point I. of this experimental part, A in Figure 4).
- a first pump 3 is connected on the one hand upstream to the first container 2, and downstream on a first three-way valve 4 to perform the injection (B in Figure 4).
- a first four-way valve 5 is placed downstream of the first column 1 for the downward mode.
- the stationary phase and the mobile phase are recovered separately during the sequence, respectively in a third receptacle 9 and a fourth receptacle 10, thanks to a second four-way valve 11a and a third three-way valve 11b .
- the stationary phase recovered in the third container 9 is treated by membrane process by passing through a first membrane filter 12 under the conditions described in point III. (E in Figure 4), to obtain;
- a stationary phase to be cleaned by another treatment using a passage in a second membrane filter 14 (F in FIG. 4): the filtered stationary phase is collected in a fifth container 15 downstream of which a third pump 16 is connected and a third three-way valve 17, one of the outputs leads to an inlet pipe of the first column 1 CPC to feed continuously in stationary phase recycled.
- the mobile phase recovered in the fourth container 10 is also treated by membrane process by passing through a third membrane filter 18 under the conditions described in point III. (D in FIG. 4), which makes it possible to regenerate the mobile phase packaged in the second container 6 in order to feed it continuously into the recycled mobile phase, as explained above.
- FIG. 4 schematically shows the succession of the steps of the purification process according to the invention, and for which the main steps A, B, C, D, E and F have been repeated in connection with FIG.
- the pumps and / or the valves are controlled by an automaton which makes it possible to replenish the columns in mobile and stationary phases according to the levels measured using sensors.
- a second CPC column 19 is connected in parallel with the first column 1 as illustrated in FIG. 4.
- Such an arrangement allows continuous operation, with mobile and / or stationary phase charging. optimal in at least one of the two columns, which represents a gain in productivity consequent as shown in point VI.
- the purity index measured represents the ratio: specific absorbance of the protein at 550 nm / absorbance at 280 nm
- the purity index measured is between 3.5 to 4.2 and a productivity of purified BPE of 4.2 g / h / hr.
- L stat (gram of BPE purified per hour per liter of stationary phase engaged in the column); the results are shown in FIG. 5 by a graph containing on the abscissa the volume collected in ml and the ordinate on the purity index (550/220).
- the first and third four-way valves 5 and 21 are placed upstream of the two CPC columns, to allow the choice of the elution mode in the two columns and to be able to finely control the synchronous / asynchronous operation of the two CPC columns.
- the pumps and / or the valves are controlled by an automaton which makes it possible to restock the columns in mobile and stationary phase according to the levels measured using sensors.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Biochemistry (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Medicinal Chemistry (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Gastroenterology & Hepatology (AREA)
- Biotechnology (AREA)
- Engineering & Computer Science (AREA)
- Peptides Or Proteins (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1853053A FR3079846B1 (fr) | 2018-04-09 | 2018-04-09 | Procede de purification de proteines a partir d’extrait de microalgues |
| PCT/FR2019/050811 WO2019197760A1 (fr) | 2018-04-09 | 2019-04-08 | Procédé de purification de protéines à partir d'extrait de microalgues |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3775252A1 true EP3775252A1 (fr) | 2021-02-17 |
Family
ID=62873485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19720982.8A Pending EP3775252A1 (fr) | 2018-04-09 | 2019-04-08 | Procédé de purification de protéines à partir d'extrait de microalgues |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3775252A1 (fr) |
| FR (1) | FR3079846B1 (fr) |
| WO (1) | WO2019197760A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2791578B1 (fr) | 1999-03-31 | 2001-06-08 | S E A B Societes D Etudes Et D | Dispositif ameliore de chromatographie de partage centrifuge a cellules |
| MXNL06000062A (es) | 2006-09-06 | 2008-10-09 | Itesm | Recuperacion y purificacion de b-ficoeritrina producida por porphyridium cruentum utilizando sistemas de dos fases acuosas y precipitacion isoelectrica. |
| KR20110119071A (ko) | 2010-04-26 | 2011-11-02 | 한국과학기술연구원 | 원심분리 분배 크로마토그래피를 사용하여 해조류에서 푸코잔틴을 분리하는 방법 |
| FR3025202A1 (fr) | 2014-08-28 | 2016-03-04 | Algobiotech | Procede d'obtention d'un precipite stable enrichi en phycobili proteines |
-
2018
- 2018-04-09 FR FR1853053A patent/FR3079846B1/fr active Active
-
2019
- 2019-04-08 WO PCT/FR2019/050811 patent/WO2019197760A1/fr not_active Ceased
- 2019-04-08 EP EP19720982.8A patent/EP3775252A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3079846A1 (fr) | 2019-10-11 |
| FR3079846B1 (fr) | 2020-12-25 |
| WO2019197760A1 (fr) | 2019-10-17 |
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