摘要:
Provided are a bovine rotavirus fusion protein and calf diarrhea multivalent vaccine. The bovine rotavirus fusion protein contains a VP6 fragment, wherein the VP6 fragment contains an amino acid sequence as represented by SEQ ID NO. 4, and at least one loop region of the following (a)˜(c) is substituted with an antigenic epitope derived from bovine coronavirus and/or an antigenic epitope derived from E. coli: (a) amino acid residues of sites 168-177; with an amino acid sequence as represented by SEQ ID NO. 1; (b) amino acid residues of sites 194-205; with an amino acid sequence as represented by SEQ ID NO. 2; and (a) amino acid residues of sites 296-316, with an amino acid sequence as represented by SEQ ID NO. 3, The bovine rotavirus fusion protein contains a plurality of antigenic epitopes, and can enable a host to generate a plurality of antibodies after immunizing the host.
摘要:
The invention relates to a method for preparing double-layered virus-like particles of rotavirus in vitro. The method comprises the following steps: purifying rotavirus VP6 proteins from a lysis supernatant, and in vitro assembling double-layered virus-like particles consisting of VP2 proteins and VP6 proteins, wherein the proteins and the virus-like particles can be used for preventing or reducing the clinical symptoms caused by rotavirus infection.
摘要:
The invention is directed to dimeric fusion proteins and virus-like particles comprising such dimeric fusion proteins. These dimeric fusion proteins comprise an antigen or antigenic fragment carried between two viral structural proteins or fragments thereof, with or without linkers, in a manner that, relative to traditional monomeric platforms, minimizes steric hindrance among the antigen or antigenic fragment and the viral structural proteins or fragments thereof. This novel design provides for multivalent vaccines and enhanced immunogenicity. The invention also relates to nucleic acids encoding such dimeric fusion proteins and host cells comprising such nucleic acids. The invention further relates to pharmaceutical compositions comprising the dimeric fusion proteins and/or virus-like particles of the invention, and methods of prevention or treatment using such compositions.
摘要:
Group C rotaviruses are a cause of acute gastroenteritis in children and adults that is distinct from group A RV. However, human group C rotaviruses cannot be grown in culture, resulting in a lack of tools for detection and treatment of GrpC RV disease. Consequently, the burden of GpC RV disease has not been clearly established. Isolated recombinant human rotavirus group C virus-like particles are provided according to embodiments of the present invention along with methods of their production and use in, inter alia, detection of Grp C RV infection, diagnostic assays and immunogenic compositions.
摘要翻译:C组轮状病毒是与A组RV不同的儿童和成人的急性胃肠炎的原因。 然而,人类C型轮状病毒不能在培养物中生长,导致缺乏用于检测和治疗GrpC RV疾病的工具。 因此,GpC RV疾病的负担尚未明确。 根据本发明的实施方案提供分离的重组人轮状病毒组C病毒样颗粒以及其生产和用于特别是检测Grp C RV感染,诊断测定和免疫原性组合物的方法。
摘要:
A method of producing a rotavirus-like particle (RLP) in a plant is provided. The method comprises expressing within a host or host cell for example a plant, portion of a plant or plant cell one or more nucleic acid comprising one or more regulatory region operatively linked to a first, second and third nucleotide sequence, the regulatory region active in the host or host cell. The first nucleotide sequence encoding a first rotavirus protein, the second nucleotide sequence encoding a second rotavirus protein and the third nucleotide sequence encoding a third rotavirus protein. The first, second and third encode rotavirus protein NSP4 and VP2 or VP6 and VP4 or VP7. The host or host cell is incubated under conditions that permit the expression of the nucleic acids, so that NSP4 and either VP2 of VP6 and VP4 or VP7 are expressed, thereby producing the RLP. Hosts comprising the RLP, compositions comprising the RLP and method for using the composition are also provided.
摘要:
The invention is directed to dimeric fusion proteins and virus-like particles comprising such dimeric fusion proteins. These dimeric fusion proteins comprise an antigen or antigenic fragment carried between two viral structural proteins or fragments thereof, with or without linkers, in a manner that, relative to traditional monomeric platforms, minimizes steric hindrance among the antigen or antigenic fragment and the viral structural proteins or fragments thereof. This novel design provides for multivalent vaccines and enhanced immunogenicity. The invention also relates to nucleic acids encoding such dimeric fusion proteins and host cells comprising such nucleic acids. The invention further relates to pharmaceutical compositions comprising the dimeric fusion proteins and/or virus-like particles of the invention, and methods of prevention or treatment using such compositions.
摘要:
The present invention relates to nucleic acids comprising: (a) sequences of a replication competent transmissible gastroenteritis virus (TGEV), which sequences encode a TGEV replicase under the control of expression regulatory sequences so that expression of the replicase in a cell containing the nucleic acid will initiate replication of the nucleic acid and thus increase the number of nucleic acids in the cell; and (b) sequences encoding one or more proteins of a different virus wherein the one or more proteins are capable of associating into a virus-like particle (VLP) that does not contain any infectious nucleic acid. The present invention further relates to vectors, virus particles and host cells comprising these nucleic acids as well as their use for the preparation of vaccines, specifically for the preparation of vaccines.
摘要:
The present invention relates to the use of rotavirus particles for displaying a heterologous protein, alone or in complex with another molecule. The invention further relates to methods that employ these modified rotavirus particles to rapidly determine the structure of the heterologous protein or the complex using cryo-electron microscopy (cryo-EM). The invention also relates to a method of immunising a patient, wherein said method comprises administering to the patient the modified rotavirus particles of the invention.
摘要:
Group C rotaviruses are a cause of acute gastroenteritis in children and adults that is distinct from group A RV. However, human group C rotaviruses cannot be grown in culture, resulting in a lack of tools for detection and treatment of GrpC RV disease. Consequently, the burden of GpC RV disease has not been clearly established. Isolated recombinant human rotavirus group C virus-like particles are provided according to embodiments of the present invention along with methods of their production and use in, inter alia, detection of Grp C RV infection, diagnostic assays and immunogenic compositions.
摘要翻译:C组轮状病毒是与A组RV不同的儿童和成人的急性胃肠炎的原因。 然而,人类C型轮状病毒不能在培养物中生长,导致缺乏用于检测和治疗GrpC RV疾病的工具。 因此,GpC RV疾病的负担尚未明确。 根据本发明的实施方案提供分离的重组人轮状病毒组C病毒样颗粒以及其生产和用于特别是检测Grp C RV感染,诊断测定和免疫原性组合物的方法。
摘要:
The invention relates to a method for preparing double-layered virus-like particles of rotavirus in vitro. The method comprises the following steps: purifying rotavirus VP6 proteins from a lysis supernatant, and in vitro assembling double-layered virus-like particles consisting of VP2 proteins and VP6 proteins, wherein the proteins and the virus-like particles can be used for preventing or reducing the clinical symptoms caused by rotavirus infection.