WO2023280220A1 - 一种冠状病毒s蛋白变体及其应用 - Google Patents
一种冠状病毒s蛋白变体及其应用 Download PDFInfo
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- This application relates to the field of biomedicine, in particular to a coronavirus S protein variant and its application in the preparation of vaccines.
- the present application provides a coronavirus S protein variant, as well as nucleic acid molecules (including DNA and/or RNA) encoding it, which can stimulate the body to generate an immune response.
- the S protein variant of the present application has a higher expression level, and when used to stimulate an immune response, it can produce higher total antibodies, and at the same time, protective antibodies/neutralizing antibodies also have Great improvement.
- the S protein variants of the present application and their nucleic acid molecules can be prepared as vaccines.
- mRNAs encoding S protein variants and lipid nanoparticles comprising them can be prepared as vaccines.
- the vaccine of the present application can greatly improve the immune response, reduce the dosage and reduce side effects.
- the present application provides a variant of the S protein, which does not contain a complete cytoplasmic tail domain compared with the S protein of the wild-type coronavirus.
- the S protein variant comprises the amino acid sequence shown in any one of SEQ ID NO:8, 21, 24, 27, 30, 33, 35, 38, 41, 45, 59 and 61 .
- the S protein variant comprises the amino acid sequence shown in SEQ ID NO:8.
- the signal peptide comprises the amino acid sequence shown in any one of SEQ ID NO: 1-2.
- the present application provides an isolated nucleic acid molecule comprising a polynucleotide encoding the S protein variant described in the present application.
- the nucleic acid molecule comprises at least one modified nucleotide.
- the present application provides a vector comprising the nucleic acid molecule described in the present application.
- the present application provides a cell comprising the nucleic acid molecule, and/or the vector.
- the present application provides a composition comprising (1) mRNA encoding the S protein variant described in the present application, and (2) a delivery vehicle.
- the delivery vehicle comprises cationic lipids.
- the molar ratio of the cationic lipid is about 45% to about 55%.
- the cationic lipid can be Dlin-MC3-DMA.
- the chemical structural formula of the Dlin-MC3-DMA can be:
- the delivery vehicle includes cholesterol.
- the present application provides a pharmaceutical composition, the pharmaceutical composition comprising the S protein variant described in the present application, the nucleic acid molecule, the vector, the cell and/or the composition, and optionally a pharmaceutically acceptable carrier.
- Figure 1A shows the in vitro expression results of the S protein variant mRNA transfected into 293T cells.
- truncated cytoplasmic tail domain generally refers to a cytoplasmic tail domain in which there is an amino acid deletion relative to the intact cytoplasmic tail domain.
- SARS severe Acute Respiratory Syndrome
- SARS-CoV severe Respiratory Syndrome
- SM102 generally refers to an ionizable amino lipid that has been combined with other lipids to form lipid nanoparticles.
- the molecular structure of SM102 can be found in CAS 2089251-47-6.
- the cytoplasmic tail domain of the S protein variant may be missing about 40 to about 60 amino acids at the C-terminus. In the present application, compared with the S protein of the wild-type SARS-CoV-2 virus, the cytoplasmic tail domain of the S protein variant may be missing about 30 to about 40 amino acids at the C-terminus. In the present application, compared with the S protein of the wild-type SARS-CoV-2 virus, the cytoplasmic tail domain of the S protein variant may be missing about 20 to about 30 amino acids at the C-terminus.
- the coronavirus may be SARS-CoV virus.
- the cytoplasmic tail domain of the S protein variant may be deleted at the C-terminus by about 14, about 15, about 16, about 17, About 18, about 19 or about 20 amino acids.
- the cytoplasmic tail domain of the S protein variant may be deleted at the C-terminus by about 10, about 20, about 30, about 40, About 50 or about 60 amino acids.
- the cytoplasmic tail domain of the S protein variant may be missing about 22 to about 64 amino acids at the C-terminus. In the present application, compared with the S protein of the wild-type SARS-CoV virus, the cytoplasmic tail domain of the S protein variant may be missing about 22 to about 60 amino acids at the C-terminus. In the present application, compared with the S protein of the wild-type SARS-CoV virus, the cytoplasmic tail domain of the S protein variant may be missing about 30 to about 60 amino acids at the C-terminus.
- the cytoplasmic tail domain of the S protein variant may be missing about 40 to about 60 amino acids at the C-terminus. In the present application, compared with the S protein of the wild-type SARS-CoV virus, the cytoplasmic tail domain of the S protein variant may be missing about 30 to about 40 amino acids at the C-terminus. In the present application, compared with the S protein of the wild-type SARS-CoV virus, the cytoplasmic tail domain of the S protein variant may be missing about 20 to about 30 amino acids at the C-terminus.
- the cytoplasmic tail domain of the S protein variant may be missing about 22 to about 64 amino acids at the C-terminus. In the present application, compared with the S protein of the wild-type MERS-CoV virus, the cytoplasmic tail domain of the S protein variant may be missing about 22 to about 60 amino acids at the C-terminus. In the present application, compared with the S protein of the wild-type MERS-CoV virus, the cytoplasmic tail domain of the S protein variant may be missing about 30 to about 60 amino acids at the C-terminus.
- the cytoplasmic tail domain of the S protein variant may be missing about 40 to about 60 amino acids at the C-terminus. In the present application, compared with the S protein of the wild-type MERS-CoV virus, the cytoplasmic tail domain of the S protein variant may be missing about 30 to about 40 amino acids at the C-terminus. In the present application, compared with the S protein of the wild-type MERS-CoV virus, the cytoplasmic tail domain of the S protein variant may be missing about 20 to about 30 amino acids at the C-terminus.
- the nucleic acid molecule may be RNA.
- the nucleic acid molecule may be mRNA.
- the mRNA may include a 5' cap, a 5' untranslated region (5'UTR), an open reading frame, a 3' untranslated region (3'UTR) and a poly A tail.
- said poly A can comprise the nucleotide sequence shown in SEQ ID NO:66.
- the mRNA can include a 5' cap, a 5' untranslated region (5'UTR), an open reading frame, a 3' untranslated region (3'UTR) and a poly A tail; wherein the 5'UTR can be Comprising the nucleotide sequence shown in SEQ ID NO:64, the 5'UTR can include the nucleotide sequence shown in SEQ ID NO:65, and the poly A can include the nucleoside shown in SEQ ID NO:66 acid sequence, the open reading frame can comprise the nucleotide sequence shown in SEQ ID NO:7; the mRNA can comprise the nucleotide sequence shown in SEQ ID NO:67.
- the lipid nanoparticles may comprise cationic and/or ionizable lipids, anionic lipids, neutral lipids, amphipathic lipids, pegylated lipids and/or structured Lipid, or a combination of the above
- the lipid nanoparticle comprises one or more RNAs described herein, such as mRNA, and for example, mRNA encoding a S protein variant.
- the nanolipid particles may comprise one or more (eg 1, 2, 3, 4, 5, 6, 7 or 8) non-cationic lipids.
- the non-cationic lipids may include anionic lipids.
- Anionic lipids suitable for lipid nanoparticles of the present application may include phosphatidylglycerol, cardiolipin, diacylphosphatidylserine, diacylphosphatidic acid, N-dodecanoylphosphatidylethanolamine, N-succinylphosphatidylethanolamine , N-glutarylphosphatidylphosphoethanolyl, and other neutral lipids with attached anionic groups.
- the nano-lipid particles may also contain cholesterol.
- the molar proportion of cholesterol in the lipid nanoparticles is about 5-15%, for example, about 6-14%, about 7-13%, about 8-12%, or about 9-11% %. In certain embodiments, the molar proportion of cholesterol in the lipid nanoparticles may be about 10%.
- the present application provides a cell comprising the nucleic acid molecule, and/or the vector.
- the cells may be prokaryotic cells, for example, Escherichia coli.
- the cells may be eukaryotic cells such as yeast cells, insect cells, plant cells and animal cells.
- the cells may be mammalian cells, such as mouse cells, human cells and the like.
- the vaccine may be a protein vaccine, which may contain the S protein variant.
- the present application provides a method for producing antibodies against coronavirus, the method comprising administering the S protein variant, the nucleic acid molecule, the carrier, the cell, the composition, the drug Composition and/or said vaccine.
- SARS-Cov-2 virus S protein (code name: SDC60Alb) containing Alb signal peptide and SARS virus S protein (SARS S).
- SARS-Cov-2 virus SDC60 Alb protein has the following variants: full-length protein (FL), full-length protein (2P) containing K986P and V987P mutations, and the C-terminus of the full-length protein is truncated by 10, 18, Proteins with 20, 40, 60, and 67 amino acids (DC10, DC18, DC20, DC40, DC60, DC67);
- the SARS S protein variants of SARS virus include: full-length protein (FL), full-length C-terminal truncated by 10 , 18, 40 amino acid proteins (DC10, DC18, DC40).
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Abstract
Description
Claims (65)
- S蛋白变体,与野生型冠状病毒的S蛋白相比,其不包含完整的细胞质尾巴结构域。
- 根据权利要求1所述的S蛋白变体,与野生型冠状病毒的S蛋白相比,其包含截短的细胞质尾巴结构域。
- 根据权利要求1-2中任一项所述的S蛋白变体,与野生型冠状病毒的S蛋白相比,其在C末端截短了18-20个氨基酸。
- 根据权利要求3所述的S蛋白变体,与野生型冠状病毒的S蛋白相比,其在C末端截短了18个氨基酸。
- 根据权利要求1所述的S蛋白变体,与野生型冠状病毒的S蛋白相比,其不包含细胞质尾巴结构域。
- 根据权利要求5所述的S蛋白变体,与野生型冠状病毒的S蛋白相比,其不包含跨膜域。
- 根据权利要求5-6中任一项所述的S蛋白变体,与野生型冠状病毒的S蛋白相比,其在C末端截短了22-64个氨基酸。
- 根据权利要求1-7中任一项所述的S蛋白变体,其中所述冠状病毒为MERS冠状病毒和/或SARS-CoV类病毒。
- 根据权利要求1-8中任一项所述的S蛋白变体,其中所述冠状病毒为SARS-CoV-2病毒。
- 根据权利要求1-9中任一项所述的S蛋白变体,其中所述野生型冠状病毒的S蛋白的细胞质尾巴结构域包含SEQ ID NO:48-49中任一项所示的氨基酸序列。
- 根据权利要求6-10中任一项所述的S蛋白变体,其中所述野生型冠状病毒的S蛋白的跨膜域包含SEQ ID NO:50-51中任一项所示的氨基酸序列。
- 根据权利要求1-11中任一项所述的S蛋白变体,其中所述野生型冠状病毒的S蛋白包含SEQ ID NO:5、34和44中任一项所示的氨基酸序列。
- 根据权利要求1-12中任一项所述的S蛋白变体,其包含SEQ ID NO:8、21、24、27、30、33、35、38、41、45、59和61中任一项所示的氨基酸序列。
- 根据权利要求1-13中任一项所述的S蛋白变体,其包含SEQ ID NO:8所示的氨基酸序列。
- 根据权利要求1-14中任一项所述的S蛋白变体,其还包括信号肽,且所述信号肽位于所述S蛋白变体的N末端。
- 根据权利要求15所述的S蛋白变体,其中所述信号肽包含SEQ ID NO:1-2中任一项所 示的氨基酸序列。
- 分离的核酸分子,其包含编码权利要求1-16中任一项所述的S蛋白变体的多核苷酸。
- 根据权利要求17所述的核酸分子,其为DNA。
- 根据权利要求17-18中任一项所述的核酸分子,其包含SEQ ID NO:6、9-19、22、25、28、31、36、39、42、46、60、62和63中任一项所述的核苷酸序列。
- 根据权利要求17所述的核酸分子,其为mRNA。
- 根据权利要求20所述的核酸分子,其在选自下组的一个或多个位置处包含修饰:5’帽、5’非翻译区、开放阅读框、3’非翻译区和3’聚腺苷酸。
- 根据权利要求20-21中任一项所述的核酸分子,其包含至少一种经修饰的核苷酸。
- 根据权利要求20-22中任一项所述的核酸分子,其为密码子优化的。
- 根据权利要求20-23中任一项所述的核酸分子,其包含SEQ ID NO:7、20、23、26、29、32、37、40、43和47中任一项所示的核苷酸序列。
- 载体,其包含权利要求17-24中任一项所述的核酸分子。
- 细胞,其包含权利要求17-24中任一项所述的核酸分子,和/或权利要求25所述的载体。
- 制备权利要求1-16中任一项所述的S蛋白变体的方法,所述方法包括在使得权利要求1-16中任一项所述的S蛋白变体表达的条件下,培养根据权利要求26所述的细胞。
- 组合物,其包含(1)编码权利要求1-16中任一项所述的S蛋白变体的mRNA,和(2)递送载体。
- 根据权利要求28所述的组合物,其中所述mRNA在选自下组的一个或多个位置处包含修饰:5’帽、5’非翻译区、开放阅读框、3’非翻译区和poly A尾。
- 根据权利要求28-29中任一项所述的组合物,其中所述mRNA包含至少一种经修饰的核苷酸。
- 根据权利要求28-30中任一项所述的组合物,其中所述mRNA包含的经修饰的核苷酸为假尿苷(Ψ)。
- 根据权利要求28-31中任一项所述的组合物,其中所述mRNA是密码子优化的。
- 根据权利要求28-32中任一项所述的组合物,其中所述mRNA包含如SEQ ID NO:7、20、23、26、29、32、37、40、43和47中任一项所示的核苷酸序列。
- 根据权利要求28-32中任一项所述的组合物,其中所述S蛋白变体源自SARS CoV-2病毒。
- 根据权利要求28-32中任一项所述的组合物,其中所述mRNA包含如SEQ ID NO:7所示 的核苷酸序列。
- 根据权利要求28-35中任一项所述的组合物,其中所述递送载体包括脂质体。
- 根据权利要求28-36中任一项所述的组合物,其中所述递送载体包括脂质纳米颗粒(LNP)。
- 根据权利要求28-37中任一项所述的组合物,其中所述递送载体包括阳离子脂质。
- 根据权利要求38所述的组合物,在所述递送载体中,其中所述阳离子脂质的摩尔比为约45%至约55%。
- 根据权利要求38或39所述的组合物,其中所述阳离子脂质包括SM102和/或Dlin-MC3。
- 根据权利要求28-40中任一项所述的组合物,其中所述递送载体包括非阳离子脂质。
- 根据权利要求41所述的组合物,其中所述非阳离子脂质包括磷脂和/或脂质缀合物。
- 根据权利要求42所述的组合物,其中所述磷脂包括二硬脂酰基磷脂酰胆碱(DSPC)。
- 根据权利要求42或43所述的组合物,在所述递送载体中,其中所述磷脂的摩尔比为约35%至约40%。
- 根据权利要求42-44中任一项所述的组合物,其中所述脂质缀合物包括聚乙二醇修饰的脂分子。
- 根据权利要求42-45中任一项所述的组合物,在所述递送载体中,其中所述脂质缀合物的摩尔比为约1%至约2%。
- 根据权利要求45-46中任一项所述的组合物,其中所述聚乙二醇修饰的脂分子包括DMPE-PEG2000。
- 根据权利要求28-47中任一项所述的组合物,其中所述递送载体包括胆固醇。
- 根据权利要求48所述的组合物,在所述递送载体中,其中所述胆固醇的摩尔比为约8%至约12%。
- 根据权利要求28-49中任一项所述的组合物,其中所述递送载体包含阳离子脂质、胆固醇、磷脂和脂质缀合物,且所述阳离子脂质、胆固醇、磷脂和脂质缀合物的质量比为50:10:38.5:1.5。
- 根据权利要求28-50中任一项所述的组合物,其中所述递送载体包含SM102、胆固醇、DSPC和DMPE-PEG2000,且所述SM102、胆固醇、DSPC和DMPE-PEG2000的质量比为50:10:38.5:1.5。
- 根据权利要求28-51中任一项所述的组合物,其中所述mRNA包载在所述递送载体中。
- 药物组合物,其包含权利要求1-16中任一项所述的S蛋白变体、权利要求17-24中任一项所述的核酸分子、权利要求25所述的载体、权利要求26所述的细胞和/或权利要求28-52中任一项所述的组合物,以及任选地药学上可接受的载体。
- 疫苗,其包含权利要求1-16中任一项所述的S蛋白变体、权利要求17-24中任一项所述的核酸分子、权利要求25所述的载体、权利要求26所述的细胞、权利要求28-52中任一项所述的组合物和/或权利要求53所述的药物组合物,以及药学上可接受的佐剂。
- 根据权利要求54所述的疫苗,其为蛋白疫苗。
- 根据权利要求54所述的疫苗,其为核酸疫苗。
- 根据权利要求56所述的疫苗,其为DNA疫苗。
- 根据权利要求56所述的疫苗,其为mRNA疫苗。
- 试剂盒,包含权利要求1-16中任一项所述的S蛋白变体、权利要求17-24中任一项所述的核酸分子、权利要求25所述的载体、权利要求26所述的细胞、权利要求28-52中任一项所述的组合物、权利要求53所述的药物组合物和/或权利要求54-58中任一项所述的疫苗。
- 权利要求1-16中任一项所述的S蛋白变体、权利要求17-24中任一项所述的核酸分子、权利要求25所述的载体、权利要求26所述的细胞、权利要求28-52中任一项所述的组合物、权利要求53所述的药物组合物和/或权利要求54-58中任一项所述的疫苗在制备药物中的用途,所述药物用于缓解、预防和/或治疗冠状病毒引起的疾病。
- 根据权利要求60所述的用途,其中所述疾病或病症为新型冠状病毒肺炎(COVID-19)和/或重症急性呼吸综合征(SARS)。
- 缓解、预防和/或治疗冠状病毒引起的疾病或病症的方法,所述方法包括向有需要的受试者施用权利要求1-16中任一项所述的S蛋白变体、权利要求17-24中任一项所述的核酸分子、权利要求25所述的载体、权利要求26所述的细胞、权利要求28-52中任一项所述的组合物、权利要求53所述的药物组合物和/或权利要求54-58中任一项所述的疫苗。
- 根据权利要求62所述的用途,其中所述疾病或病症为新型冠状病毒肺炎(COVID-19)和/或重症急性呼吸综合征(SARS)。
- 产生针对冠状病毒抗体的方法,其包括施用权利要求1-16中任一项所述的S蛋白变体、权利要求17-24中任一项所述的核酸分子、权利要求25所述的载体、权利要求26所述的细胞、权利要求28-52中任一项所述的组合物、权利要求53所述的药物组合物和/或权利要求54-58中任一项所述的疫苗。
- 激活免疫的方法,其包括施用权利要求1-16中任一项所述的S蛋白变体、权利要求17-24中任一项所述的核酸分子、权利要求25所述的载体、权利要求26所述的细胞、权利要求28-52中任一项所述的组合物、权利要求53所述的药物组合物和/或权利要求54-58中任一项所述的疫苗。
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| WO2024183687A1 (zh) * | 2023-03-03 | 2024-09-12 | 上海蓝鹊生物医药有限公司 | 一种抗新冠病毒的蛋白或mRNA疫苗及其制备方法和应用 |
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