Composition of anti-IL-17A antibody
Technical Field
The present invention relates to a composition of stable anti-IL-17A antibodies.
Background
IL-17A (like IL-17) is involved in the production of proinflammatory responses and induces and mediates the expression of a variety of cytokines including alpha tumor necrosis factor (TNF- α), IL-6, IL-8, IL-1 β, GRO- α, granulocyte-colony stimulating factor (G-CSF), prostaglandin E2(PGE 2), IL-10, IL-12, IL-1R antagonists, leukemia inhibitory factor, etc. IL-17 also induces the production of nitric oxide outside chondrocytes and human bone joints.
The SHR-1314 injection is an autonomously developed humanized monoclonal antibody medicament, takes IL-17A as a target, specifically binds IL-17A to inhibit the generation of cytokines such as GRO α and the like, achieves the effect of blocking a signal conduction pathway, is mainly used for treating psoriasis, and is clinically confirmed for other autoimmune diseases.
WO2015070697 discloses a novel class of anti-IL-17A antibodies with high affinity and long half-life, which are expected to have better therapeutic effects on the above mentioned diseases. However, these new anti-IL-17A antibodies are extremely unstable and difficult to formulate into clinically useful formulations, and WO2015070697 does not describe anything about how they can be formulated. Therefore, it is necessary to intensively study these antibodies to obtain a stable and clinically convenient preparation.
Disclosure of Invention
The invention aims to provide a stable anti-IL-17A antibody composition.
The composition of the present invention comprises an anti-IL-17A antibody, a buffer, a disaccharide, and optionally a surfactant.
In the composition of the present invention, the anti-IL-17A antibody preferably has the amino acid sequences of LCDR1, LCDR2 and LCDR3 of SEQ ID NO. 1, SEQ ID NO. 2 and SEQ ID NO. 3, respectively, and the amino acid sequences of HCDR1, HCDR2 and HCDR3 of SEQ ID NO. 4, SEQ ID NO. 5 and SEQ ID NO. 6, respectively, as shown in the following table:
further preferred anti-IL-17A antibodies have the light chain of SEQ ID NO. 7 and the heavy chain amino acid sequence of SEQ ID NO. 8:
SEQ ID NO:7
EIVLTQSPDFQSVTPKEKVTITCSASSSVNYMHWFQQKPDQSPKLWIYRTSNLASGVPSRFSGSGSGTDYTLTINSLEAEDAATYYCQQRSSYPWTFGQGTKLEIKR
SEQ ID NO:8
EVQLVQSGAEVKKPGASVKVSCKASGYTFTDYEVHWVRQAPGQGLEWMGVIDPGTGGVAYNQKFEGRVTMTADTSTSTAYMELRSLRSDDTAVYYCTRYSLFYGSSPYAMDYWGQGTLVTVSS
the concentration of the anti-IL-17A antibody may be 50-150mg/ml, preferably 70-100mg/ml, most preferably 80 mg/ml.
Preferred buffers of the present invention are histidine-hydrochloride systems, preferably histidine-histidine hydrochloride buffers, in an amount which is not particularly limited, and in embodiments of the present invention, for example, from 1 to 50mM, preferably from 5 to 20mM, most preferably 10 mM.
The disaccharide can be selected from sucrose, lactic acid, trehalose, maltose, preferably sucrose. The amount of the disaccharide used is not particularly limited, and in an embodiment of the present invention, for example, is 10 to 500mg/ml, preferably 50 to 200mg/ml, more preferably 50 to 100mg/ml, most preferably 76 mg/ml.
The surfactant may be selected from polyoxyethylene hydrogenated castor oil, glycerin fatty acid ester, polyoxyethylene sorbitan fatty acid ester, and the polyoxyethylene sorbitan fatty acid ester may be selected from polysorbate 20, 40, 60, or 80. The amount of the surfactant to be used is not particularly limited, and in an embodiment of the present invention, for example, is 0.1 to 10mg/ml, preferably 0.2 to 5mg/ml, more preferably 0.3 to 0.9mg/ml, most preferably 0.6 mg/ml.
The composition is an injectable pharmaceutical composition.
The pH of the composition may range from 5.0 to 7.0, preferably from 5.4 to 6.2, most preferably from 5.8 to 6.0.
In one embodiment of the invention, the composition consists of an anti-IL-17A antibody, a buffer, a disaccharide, a surfactant, optionally including water.
The injectable pharmaceutical composition may be an injection or further prepared in the form of lyophilized powder. The lyophilized powder can be prepared by conventional methods in the art.
The invention also provides an injection which is reconstructed after the freeze-dried powder is redissolved and can be directly used for injection.
The pharmaceutical composition can effectively inhibit the aggregation and deamidation of the antibody, thereby preventing the degradation of the antibody product, obtaining a stable injection composition, and can be stably stored for 6 months at 25 ℃ and 12 months at 2-8 ℃. In addition, the pharmaceutical composition has a protective effect on protein oxidative degradation, can be compatible with glass and stainless steel containers, and can be stably stored in the containers.
Drawings
FIG. 1 shows the degradation curve of the formulation of example 5 under strong oxidative conditions, with blanks and 0.005% H2O2The degradation curves of the groups overlap.
Figure 2 shows the degradation curve of the formulation of example 5 under strong oxidizing conditions.
Detailed Description
The present invention is further illustrated in detail by the following examples. These examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Example 1
The anti-IL-17A antibody was formulated in a pH 5.5-6.5 formulation containing 10mM histidine hydrochloride, 76mg/mL sucrose, 0.6mg/mL polysorbate 80, respectively, at a protein concentration of 80 mg/mL. Each formulation was filtered and filled into 2mL neutral borosilicate glass tubular injection vials sealed with polytetrafluoroethylene/hexafluoropropylene coated copolymer films chlorinated butyl rubber stoppers for the injections. The samples were stored at 40 ℃ for stability analysis. The results show that anti-IL-17A antibodies are most stable at pH 5.8-6.0.
TABLE 1 Effect of pH on degradation of anti-IL-17A antibodies stored at 40 ℃
Example 2
An anti-IL-17A antibody preparation was prepared at a protein concentration of 80mg/mL in the following buffer:
1)15mM phosphate, 76mg/mL sucrose, pH5.8
2)10mM histidine hydrochloride, 76mg/mL sucrose, pH5.8
Each formulation was aliquoted into 2mL vials and stored at 40 ℃. Stability analysis of the drug product shows that the stability of the anti-IL-17A antibody in a histidine buffer salt system is obviously superior to that of a phosphate buffer system.
TABLE 2 Effect of buffer systems on degradation of anti-IL-17A antibodies stored at 40 deg.C
Example 3
Prescription screening is carried out by designing prescriptions containing different sucrose concentrations by adopting DSC technology:
the experimental result shows that the T of the SHR-1314 monoclonal antibody is the T when the sucrose concentration reaches 76mg/mlmThe value has larger increase, which indicates that the stability of the protein is better under the concentration
TABLE 3 recipe compositions and recipe screening test results for different sucrose concentrations
Example 4
An anti-IL-17A antibody preparation with a protein concentration of 80mg/mL was prepared in buffers containing the following surfactants at different concentrations:
1)10mM histidine hydrochloride, 76mg/mL sucrose, pH5.8
2)10mM histidine hydrochloride, 76mg/mL sucrose, 0.6mg/mL polysorbate 20, pH5.8
3)10mM histidine hydrochloride, 76mg/mL sucrose, 0.3mg/mL polysorbate 80, pH5.8
4)10mM histidine hydrochloride, 76mg/mL sucrose, 0.6mg/mL polysorbate 80, pH5.8
5)10mM histidine hydrochloride, 76mg/mL sucrose, 0.9mg/mL polysorbate 80, pH5.8
Each formulation was filled into 2mL vials and sealed with a film-coated plug. The drug was placed on a constant temperature shaker at 25 ℃ and shaken at 500 rpm. The stability results show that 0.6-0.9 mg/mL of polysorbate 80 and 20 effectively prevent the formation of large particle aggregates of the anti-IL-17A antibody.
TABLE 4 Effect of surfactants on aggregation of anti-IL-17A antibodies shaken at 25 ℃ and 500rpm
Example 5
The anti-IL-17A antibody was formulated at 80mg/mL in 10mM histidine hydrochloride, 76mg/mL sucrose, 0.6mg/mL polysorbate 80, pH 5.8. The antibody was filled into 2mL vials and sealed with a coated rubber plug. The sample is placed in a low temperature of-20 ℃ to 40 ℃ for 3 times of circulation, or in a freeze-thaw cycle of 4 ℃ to 40 ℃ for 3 times. The stability of the drug is evaluated by detecting the protein content, the purity and the activity, and the result proves that the anti-IL-17A antibody is relatively stable in the prescription and can still meet the quality standard after low temperature and freeze-thaw circulation.
TABLE 5 stability of anti-IL-17A antibody formulations during low temperature cycling and freeze-thaw cycling
Example 6
To an anti-IL-17A antibody preparation containing 80mg/mL of a protein, 10mM of histidine hydrochloride, 76mg/mL of sucrose, 0.6mg/mL of polysorbate 80, and pH5.8, 0.005% of hydrogen peroxide, or 0.005% of hydrogen peroxide + 0.005% of ferric iron was added, respectively. Standing at 37 deg.C for 48 h. The results show that the formulation has a certain protective effect against oxidative degradation of proteins, see fig. 1 and 2.
Example 7
The anti-IL-17A antibody was formulated at 80mg/mL in 10mM histidine hydrochloride, 76mg/mL sucrose, 0.6mg/mL polysorbate 80, pH 5.8. The formulations were filled in glass bottles and 316L stainless steel jars, respectively, and left at room temperature for 48 hours. Protein content and purity analysis showed that anti-IL-17A antibody was stable within 48 hours. The formulation is compatible with 316L stainless steel cans.
TABLE 6 stability of anti-IL-17A antibodies in stainless Steel jars