摘要:
A transposition assembly for the transfer of a DNA fragment of interest into the ribosomal nuclear DNA of an eukaryotic cell. An insertion means, an eukaryotic cell and a pharmaceutical composition comprising said transposition assembly, as well as a method for the in vitro transfer of said DNA fragment, are also disclosed.
摘要:
A composite particle comprising at least two polypeptides corresponding to all or part of a protein having the biological activity of one of the hepatitis B surface antigens, wherein the particle presents at least two antigenic determinants provided by the S-protein, preS2-protein or preS1-protein, said particle optionally further comprising host specific lipids. The invention also provides a modified hepatitis B surface antigen L protein which may be used alone or incorporated into such composite particles.A particular embodiment of the modified L protein (L*) comprises residues 12-52 followed by residues 133-145 followed by residues 175-400 of the L protein and a particular embodiment of a composite particle has the form (L*, S) where S is the S-protein of HBsAg.Improved hepatitis B vaccines may be prepared following expression of the above immunogens, especially in yeasts such as S. cerevisiae and Hansenula polymorpha.
摘要:
The subject of the present invention is a DNA fragment which encodes a protein capable of being recognised by an antiserum against the transferrin receptor of the strain IM2394 or IM2169 of N. meningitidis as well as a process for producing the said protein by a recombinant route. By way of example, such a DNA fragment encodes the tbp1 subunit of the strain IM2394 or IM2169 or the tbp2 subunit of the strain IM2394 or IM2169.
摘要:
The present invention provides novel peptides of specified sequence and their use as a signal peptide or a membrane-anchoring peptide. It also relates to chimeric polypeptide comprising one or more such peptides and a polypeptide of interest as well as nucleic acid molecules, vectors, infections vital particles and host cells encoding such peptides and chimeric polypeptides. The present invention also relates to a pharmaceutical composition comprising such elements and a pharmaceutically acceptable vehicle. The present invention also provides a method for recumbently producing a polypeptide using such peptides, especially for directing expression of a polypeptide of interest extracellularly or anchored at the surface of the plasma membrane.
摘要:
A topical skin rejuvenation preparation to relieve wrinkles, increase the skin's natural production of hyaluronic acid, reverse the lack of suppleness, hydrate from within, erase spider veins, reduce varicose veins, lighten aging dark blotches (“liver spots”/Lentigos, Senile Lentigines), decrease acne, and reduce under eye puffiness includes Glucosamine (2-amino-2-deoxy-alpha-D-glucose), a hexosamine (6 carbon amino sugar), including its derivative and precursor compounds: Glucosamine Sulfate, Glucosamine Hydrochloride, Glucose-6-Phosphate, Acetyl Glucosamine, Fructose-6-phosphate, Glucosamine-6-Phosphate, to increase production of Hyaluronic acid and collagen from Glucosamine Sulfate, its precursors and derivatives and to increase skin muscle tone by Dimethylaminoethanol (DMAE) while over coming deficiency it creates in each cell's production of PhosphatidylCholine, whose deficiency damages cell membranes, as well as mitochondrial and lysosome membranes.