Abstract: Provided is an anti-Henipavirus monoclonal antibody having broad spectrum neutralization activity, wherein the antibody comprises a macaque variable region and a human constant region. The antibody of the present invention has good binding activity to both Nipah virus glycoprotein G and Hendra virus glycoprotein G, can effectively neutralize Nipahpseudovirus and Hendra pseudovirus, and can be used for preparing drugs for treating Henipavirus diseases.

Abstract: Disclosed is a monoclonal antibody 2G1 against an Ebola glycoprotein GP2 subunit. The monoclonal antibody has binding activity to EBOV GP, BDBV GP, SUDV GP, and RESTV GP, and can play a neutralizing role.

Abstract: Disclosed in the present invention is an anti-Nipah virus monoclonal antibody having neutralization activity. The antibody consists of a monkey-derived variable region and a human constant region, and both light and heavy chains of the monkey-derived variable region have unique CDR regions. The antibody provided by the present invention has an excellent antigen binding capability, and has good binding activity with Bangladesh Nipah virus and Malaysia Nipah virus glycoprotein G. The antibody can effectively neutralize the Nipahpseudovirus. Moreover, the neutralization activity of the antibody is enhanced as the concentration of the antibody increases, and nearly 100% neutralization of the Nipahpseudovirus can be achieved at a concentration of 1 ?g/mL. Also disclosed in the present invention is an application of the monoclonal antibody against the Nipah virus glycoprotein G in preparation of a Nipah virus treatment drug.

Abstract: Provided is a novel coronavirus vaccine using replication-deficient human type 5 adenovirus as a vector. The vaccine takes the replication-deficient human type 5 adenovirus that is lack of E1 and E3 in a combined mode as a vector, and HEK293 cells that integrate adenovirus E1 genes serve as a packaging cell line, and protective antigenic genes carried are optimized COVID-19 (SARS-CoV-2) S protein genes (Ad5-nCoV). The vaccine has good immunogenicity in both mouse and guinea pig models and can induce the body to produce a strong cellular and humoral immune responses in a short time. Research on the protective effect of hACE2 transgenic mice shows that 14 days after a single Ad5-nCoV immunization, the viral load in lung tissues can be significantly reduced. It shows that the vaccine has a good immune protection effect against COVID-19.

Abstract: A single plasmid vector system for packaging recombinant human adenovirus type 4. The vector system contains an E3 region-deleted human adenovirus type 4 (HAdV-4 or Ad4) genome, a vector sequence for amplifying plasmids in bacteria, a pBR322 replication origin, a kanamycin resistance gene, and a replication control sequence; and an exogenous gene embedding site is located behind a packaging signal of the human adenovirus type 4 and in front of an E1 region. The present invention further provides a method for packaging the recombinant human adenovirus type 4 by the single plasmid vector system and an application in vaccine and drug preparation. The vector system can be used for rapidly and efficiently preparing a human adenovirus type 4 vector recombinant virus for stably expressing an exogenous gene, and has a good application prospect in the fields of preparation of a diagnostic kit, a vaccine, a gene therapy kit and/or a tumor therapy drug, etc.

Abstract: The present invention relates to a nucleotide sequence as shown in SEQ ID NO: 1 for encoding a Marburg virus envelope glycoprotein, and to a human replication-deficient recombinant adenovirus capable of expressing the nucleotide sequence and a preparation method therefor, as well as an application thereof in the preparation of a vaccine against Marburg virus disease. The vaccine uses an E1 and E3 deleted replication-deficient human type-5 adenovirus as a vector, and HEK293 cells integrating an adenovirus E1 gene as a packaging cell line, and a protective antigen gene carried is a codon-optimized Marburg virus Angola strain envelope glycoprotein gene. After codon optimization of the envelope glycoprotein gene, significant expression of envelope glycoprotein can be detected in transfected cells.

Abstract: The present invention relates to a pharmaceutical composition of Tecovirimat for injection, comprising Tecovirimat as an active ingredient, cyclodextrin and an additive. The present invention also relates to a method for preparing the pharmaceutical composition. The composition improves the solubility of Tecovirimat in water by using cyclodextrin and meglumine in combination, as compared with the solubility of Tecovirimat in water by using cyclodextrin or meglumine alone.

Abstract: Provided are a processing method and a processing apparatus for efficacy of a combined drug. The processing method includes: obtaining dose-effect curve band of expected additive effect of the combined drug; obtaining actual dose-effect relationship curve formed by actual effect value of the combined drug with a dose change of one target component drug in the combined drug; comparing a positional relationship between the actual dose-effect relationship curve and the dose-effect curve band; and outputting the efficacy of the combined drug as a synergistic effect when the actual dose-effect relationship curve is located above the dose-effect curve band, outputting the efficacy of the combined drug as an antagonistic effect when the actual dose-effect relationship curve is located below the dose-effect curve band, and outputting the efficacy of the combined drug as an additive effect when the actual dose-effect relationship curve is located within a range of the dose-effect curve band.

Abstract: The present invention relates to a nucleotide sequence as shown in SEQ ID NO: 1 for encoding a Marburg virus envelope glycoprotein, and to a human replication-deficient recombinant adenovirus capable of expressing the nucleotide sequence and a preparation method therefor, as well as an application thereof in the preparation of a vaccine against Marburg virus disease. The vaccine uses an E1 and E3 deleted replication-deficient human type-5 adenovirus as a vector, and HEK293 cells integrating an adenovirus E1 gene as a packaging cell line, and a protective antigen gene carried is a codon-optimized Marburg virus Angola strain envelope glycoprotein gene. After codon optimization of the envelope glycoprotein gene, significant expression of envelope glycoprotein can be detected in transfected cells.

Abstract: The present invention discloses a unit for validating an in situ decontamination effect, including a connecting end. A left end of the connecting end is in communication with any space that needs gas decontamination. A right end of the connecting end is connected to a closed isolation damper. A right end of the closed isolation damper is connected to a hollow decontamination validation chamber. A sealing cover is sleeved over an outer wall of the decontamination validation chamber. A mesh cup is placed inside the decontamination validation chamber, and the mesh cup is used for placing a bioindicator. In addition, the present invention further discloses a device for filtering biologically contaminated air, including a unit for validating an in situ decontamination effect and a hollow box installed with a high efficiency particulate air (HEPA) filter. The unit for validating an in situ decontamination effect is in communication with the hollow box.

Abstract: Provided are an Ebola virus envelope glycoprotein (that is GP protein) codon optimized nucleotide sequence, a human replication deficient recombinant adenovirus capable of expressing the nucleotide sequence, and applications in preparing a vaccine for preventing Ebola virus diseases. The nucleotide sequence takes a replication deficient 5 type adenovirus that is lack of E1 and E3 in a combined mode as a vector. HEK293 cells that integrate adenovirus E1 genes serve as a packaging cell line, and carried protective antigenic genes are codon optimized Zaire type Ebola virus Makona strain envelope glycoprotein genes. After the envelope glycoprotein genes are optimized by codon, the expression level in transfection cells is obviously improved.

Abstract: Provided are an Ebola virus envelope glycoprotein (that is GP protein) codon optimized nucleotide sequence, a human replication deficient recombinant adenovirus capable of expressing the nucleotide sequence, and applications in preparing a vaccine for preventing Ebola virus diseases. The nucleotide sequence takes a replication deficient 5 type adenovirus that is lack of E1 and E3 in a combined mode as a vector. HEK293 cells that integrate adenovirus E1 genes serve as a packaging cell line, and carried protective antigenic genes are codon optimized Zaire type Ebola virus Makona strain envelope glycoprotein genes. After the envelope glycoprotein genes are optimized by codon, the expression level in transfection cells is obviously improved.

Abstract: Disclosed in the present disclosure are substances having tyrosine kinase inhibitory activity and a preparation method and use thereof, wherein the substances are the compounds having the structure of general formula (I) or the geometric isomers or pharmaceutical salts thereof. Through evaluation on tyrosine kinase inhibitory activity and related experiments, the present disclosure demonstrates that these compounds have a good tyrosine kinase inhibitory activity, and may inhibit a variety of tumor cells, and thus may be developed into drugs for preventing and treating tumor diseases, especially liver cancer, lung cancer and neuroblastoma.

Abstract: A pegylated artesunate derivative, a pharmaceutical composition and uses thereof, the pegylated artesunate derivative is represented by the general formula (I): The pegylated artesunate derivative has activity comparable to that of artesunate, increased water solubility and stability, and an extended half-life in vivo.

Abstract: Disclosed in the present disclosure are substances having tyrosine kinase inhibitory activity and a preparation method and use thereof, wherein the substances are the compounds having the structure of general formula (I) or the geometric isomers or pharmaceutical salts thereof. Through evaluation on tyrosine kinase inhibitory activity and related experiments, the present disclosure demonstrates that these compounds have a good tyrosine kinase inhibitory activity, and may inhibit a variety of tumor cells, and thus may be developed into drugs for preventing and treating tumor diseases, especially liver cancer, lung cancer and neuroblastoma.

Abstract: The present invention relates to the fields of immunology and molecular biology and related to a B7-1-PE40KDEL exotoxin fusion gene-based DNA vaccine and the use thereof. Specifically, the DNA vaccine contains a recombinant expression vector, and the vector contains exotoxin fusion gene B7-1-PE40KDEL, which is effectively ligated into selected eukaryotic expression vectors, such as pcDNA3.1/Zeo(+), pWLNEO, pSV2CAT, pOG44, pXT1, pSG, pSVK3, pBPV, pMSG, pSVL, and adenovirus. The invention also relates to the exotoxin fusion gene B7-1-PE40KDEL, the encoded exotoxin fusion protein, a recombinant expression vector that contains the exotoxin fusion gene, and compositions that contain the recombinant expression vector. The DNA vaccine in this invention has a good effect on the treatment or prevention of allogeneic tissue/organ transplant rejection and hematopoietic stem cell transplantation rejection such as GVHD.

Abstract: A method for preparation of Timosaponin BII, which uses Chinese traditional medicine Rhizoma Anemarrhenae or fresh rhizoma or fibrous root of Anemarrhena asphodeloides Bge. as raw material, and comprises isolation of Timosaponin BII by one or more processes selected from solvent extraction, resin adsorption, polyamide chromatography, reversed phase column chromatography, Sephadex LH-20 column chromatography, etc, combining with conventional drying method such as reduced pressure drying, freeze drying, spray drying, and so on. Timosaponin BII obtained by the present method is of over 90% purity, and the method is simple, practicable and suitable for industrial production.

Abstract: The present invention relates to the fields of immunology and molecular biology and related to a B7-1-PE40KDEL exotoxin fusion gene-based DNA vaccine and the use thereof. Specifically, the DNA vaccine contains a recombinant expression vector, and the vector contains exotoxin fusion gene B7-1-PE40KDEL, which is effectively ligated into selected eukaryotic expression vectors, such as pcDNA3.1/Zeo(+), pWLNEO, pSV2CAT, pOG44, pXT1, pSG, pSVK3, pBPV, pMSG, pSVL, and adenovirus. The invention also relates to the exotoxin fusion gene B7-1-PE40KDEL, the encoded exotoxin fusion protein, a recombinant expression vector that contains the exotoxin fusion gene, and compositions that contain the recombinant expression vector. The DNA vaccine in this invention has a good effect on the treatment or prevention of allogeneic tissue/organ transplant rejection and hematopoietic stem cell transplantation rejection such as GVHD.

Abstract: A multiassay immunochromatographic chip comprises: a viscous bottom lining (1), a sample pad (2), a bonding pad (3), an analysis membrane (4) and a water absorption pad (5). The bonding pad (3) fixedly has a plurality of assay binding substances (6) and a control binding substance (7), the assay binding substance (6) is formed by joining a tracer (8) and a liquid-phase detection probe (9), the control binding substance (7) is formed by joining the tracer (8) and a liquid-phase control probe (11); the analysis membrane (4) is provided with a detection matrix unit (12), each detection matrix unit comprises a detection zone (13) and a control zone (14), wherein the detection zone (13) consists of a plurality of solid phase detection probes (15) and the control zone (14) consists of a solid phase control probe (16). Organic integration of immunochromatographic reaction modes and chip assay matrix settings enables high throughput assay of multiple target substances with one sample load.

Abstract: Provided are a hepatopoietin PCn (HPPCn) and its homologous proteins, which can promote hepatocyte proliferation in vitro, promote liver regeneration in vivo, inhibit the growth of tumor cells and promote the apoptosis of tumor cells. The hepatopoietin PCn (HPPCn) and its homologous proteins are useful for the treatment of acute and chronic liver injury, or the treatment of liver fibrosis.