摘要:
This invention relates generally to immune responses to human immunodeficiency virus coat protein gp160 presented in the form of antigenic compositions, nucleic acids encoding human immunodeficiency virus coat proteins, and vaccines. The invention also relates to methods for production of antigenic compositions containing human immunodeficiency virus coat protein, nucleic acids encoding human immunodeficiency virus coat proteins, and human immunodeficiency virus vaccines. The invention comprises gp120 and gp41 subunits of the human immunodeficiency virus coat protein covalently linked through a peptide linker, as well as additional complexes including those comprising the human immunodeficiency virus coat protein and it's natural cellular receptor molecules.
摘要:
Recombinant negative-strand viral RNA templates are described which may be used with purified RNA-directed RNA polymerase complex to express heterologous gene products in appropriate host cells and/or to rescue the heterologous gene in virus particles. The RNA templates are prepared by transcription of appropriate DNA sequences with a DNA-directed RNA polymerase. The resulting RNA templates are of the negative-polarity and contain appropriate terminal sequences which enable the viral RNA-synthesizing apparatus to recognize the template. Bicistronic mRNAs can be constructed to permit internal initiation of translation of viral sequences and allow for the expression of foreign protein coding sequences from the regular terminal initiation site, or vice versa.
摘要:
The invention relates to a mutated env gene which codes for a mutated envelope glycoprotein of virus HIV-1. In relation to the env gene of a reference or primary infection primary isolate, said gene presents at least two mutations at the glycosylation sites which are preserved from one primary isolate to another. Each mutation consists in the replacement of an AAC or AAT codon which codes for an asparagine with a CAG or CAA codon which codes for a glutamine, the two mutations at least being selected from the following: (a) at least two mutations in the part of the env gene that codes for region C3 of the env protein; (b) at least one mutation in the part that codes for region C3 and at least one mutation in the part that codes for region V3; (c) at least one mutation in the part that codes for region C2 and at least one mutation in the part that codes for region V3 chosen from the glycosylation sites at codons 862-864 and 970-972; (d) at least one mutation in the part that codes for region C2 selected from the glycosylation sites at codons 667-669, 679-681, 700-702,763-765, 844-846 and at least one mutation in the part that codes for region V3. Alternatively, the mutated env gene consists of any one of the following sequences: SEQ ID NO: 8, SEQ ID NO: 9 or SEQ ID NO: 10, or the complementary sequences thereof. The invention also relates to the mutated Env glycoprotein and the use of the gene and the glycoprotein in a pharmaceutical composition in order to produce antibodies and to evaluate a therapeutic agent.
摘要翻译:本发明涉及编码病毒HIV-1的突变包膜糖蛋白的突变型env基因。 关于参考或原代感染初级分离株的env基因,所述基因在糖基化位点处至少存在两个突变,其从一个主要分离物保留到另一个。 每个突变都在于替换AAC或AAT密码子,其编码具有编码谷氨酰胺的CAG或CAA密码子的天冬酰胺,所述两个突变至少从以下选择:(a)部分中的至少两个突变 的env基因编码env蛋白的区域C3; (b)编码区域C3的部分中的至少一个突变和编码区域V3的部分中的至少一个突变; (c)在编码区域C2的部分中至少有一个突变,以及编码从密码子862-864和970-972处的糖基化位点选择的区域V3的部分中的至少一个突变; (d)编码选自密码子667-669,679-681,700-702,763-765,844-846的糖基化位点的区域C2部分中的至少一个突变,以及编码 区域V3。 或者,突变的env基因由以下序列之一组成:SEQ ID NO:8,SEQ ID NO:9或SEQ ID NO:10,或其互补序列。 本发明还涉及突变的Env糖蛋白以及药物组合物中基因和糖蛋白在产生抗体中的用途以及评价治疗剂。
摘要:
The susceptibility to human immunodeficiency virus (HIV) infection depends on the cell surface expression of the human CD4 molecule and a human fusion accessory factor associated with HIV infection (CXCR4). CXCR4 is a member of the 7-transmembrane segment superfamily of G-protein-coupled cell surface molecules. CXCR4 plays an essential role in the membrane fusion step of HIV infection. The establishment of stable, nonhuman cell lines and transgenic mammals having cells that coexpress human CD4 and CXCR4 provides valuable tools for the continuing research of HIV infection and the development of more effective anti-HIV therapeutics. In addition, antibodies against CXCR4, isolated and purified peptide fragments of CXCR4, and CXCR4-binding biologic agents, capable of blocking membrane fusion between HIV and target cells represent potential anti-HIV therapeutics.
摘要:
The invention provides compositions and methods for inhibiting Chk1 and/or Chk2 kinases. Also provided are compositions and methods for inhibiting G2 cell arrest checkpoint, particularly in mammalian, e.g., human, cells. The compositions and methods of the invention are also used to treat disorders of cell growth, such as cancer. In particular, the invention provides methods for selectively sensitizing G1 checkpoint impaired cancer cells to DNA damaging agents and treatments. Also provided are methods for screening for compounds able to interact with, e.g., inhibit, enzymes involved in the G2 cell cycle arrest checkpoint, such as Chk1 and/or Chk2/Cds1 kinase.
摘要:
The present invention relates to novel monoclonal antibodies which may be used in the detection of Human Immunodeficiency Virus (HIV). These antibodies exhibit an unusually high degree of sensitivity, a remarkably broad range of specificity, and bind to novel shared, non-cross-reactive epitopes. In particular, the monoclonal antibodies of the present invention may be utilized to detect HIV-1 antigen and HIV-2 core antigen in a patient sample.
摘要:
A novel immunodeficiency virus is disclosed which has the designation MVP-5180/91 and which has been deposited with the European Collection of Animal Cell Cultures (ECACC) under No. V 920 52 318. The characteristic antigens which can be obtained from it and which can be employed for detecting antibodies against retroviruses which are associated with immunodeficiency diseases are also disclosed, as are the DNA and amino acid sequences of the virus.
摘要:
The invention provides a recombinant vaccinia virus strain DIs that possesses a polynucleotide encoding a foreign antigenic protein in the non-essential gene region of the chromosome DNA and expresses the antigenic protein; and provides a highly-safe, vaccinia virus vaccine containing the recombinant virus strain DIs as the active ingredient. The invention also provides a method of using the vaccinia virus strain DIs as a vector for protein expression.
摘要:
The technical problem underlying the present invention is to provide peptides corresponding to immunologically important epitopes on bacterial and viral proteins, as well as the use of said peptides in diagnostic or immunogenic compositions. The invention relates to a process for the in vitro determination of antibodies, wherein the peptides used are biotinylated, particularly in the form of complexes of streptavidin-biotinylated peptides or of avidin-biotinylated peptides.
摘要:
Compositions that increase the efficiency of nucleic acid transfection of cells are provided, including peptide transfection reagents and fusion proteins containing the peptides. Also provided are methods of using the peptide transfection reagents and fusion proteins to transfect cells.