摘要:
Process for the in vitro culture of cells infected by a multiple sclerosis associated virus, and infected cell lines so produced. According to the invention, the process consists: a) in cultivating human cells infected by a viral strain, obtaining at least one primary cell culture infected by said viral strain, b) cultivating non-infected human cells permissive to said viral strain, obtaining at least one permissive culture, c) cultivating together at least one sample of an infected primary cell culture and one sample of the permissive culture to obtain a first infected derived culture, d) cultivating in series the first infected derived culture. Application in the pharmaceutical diagnostic industry.
摘要:
La présente invention a pour objet un procédé pour la culture in vitro de cellules infectées par un virus associé à la sclérose en plaques, et les lignées cellulaires infectées ainsi obtenues. Selon l'invention, le procédé consiste à: a) cultiver des cellules humaines infectées par une souche virale, pour obtenir au moins une culture de cellules primaires infectées par ladite souche virale, b) cultiver des cellules humaines non infectées et permissives à ladite souche virale, pour obtenir au moins une culture permissive, c) co-cultiver au moins un prélèvement d'une culture de cellules primaires infectées et un prélèvement de la culture permissive, pour obtenir une première culture dérivée infectée, d) cultiver en série la première culture dérivée infectée. L'invention trouve notamment application dans le domaine de l'industrie diagnostique pharmaceutique.
摘要:
The invention relates to a nucleotide fragment of a LTR-RU5 region comprising a nucleotide sequence which encodes the expression of a protein, wherein said protein comprises a peptide sequence selected from SEQ ID NO: 2, SEQ ID NO: 3 and SEQ ID NO: 4, and a complementary nucleotide fragment; a probe and a primer hybridizing with said fragment; a protein encoded by said fragment and a polypeptide; an antibody directed against said protein or said polypeptide; and a process for detecting the presence of MSRV-1 retrovirus using a probe or an antibody of the invention.
摘要:
Procédé d'obtention in vitro d'une culture ou lignée cellulaire infectée par une souche virale associée à la sclérose en plaques (SEP), selon lequel on effectue un prélèvement corporel sur un individu atteint de SEP, on cultive ledit prélèvement dans un milieu de culture favorisant la croissance des cellules infectées, pour obtenir une culture de cellules primaires infectées, et on cultive en série, c'est-à-dire par passages successifs, dans ledit milieu de culture, un prélèvement de la culture de cellules primaires, ou d'une sous-culture de cette dernière, pour obtenir la culture ou lignée cellulaire infectée par un virus associé à la SEP, caractérisé en ce que le milieu de culture contient en outre un anticorps anti-interféron béta, ou dirigé contre une molécule antigéniquement proche, jouant un rôle inhibiteur dans l'expression virale, permettant d'exprimer de manière persistante et de propager la souche virale dans la culture ou lignée cellulaire.
摘要:
The invention concerns in particular a method for detecting superantigen activity in a biological sample, which consists in: demonstrating a majority spread rate of lymphocytes bearing a V beta 16 and/or V beta 17 determinant or a majority loss rate of lymphocytes bearing a V beta 16 determinant and a method for detecting a pathological condition in a biological sample which consists in demonstrating at least one of the following parameters: a superantigen activity; a stimulation of the production of cytokines such as IL-6 and INF- gamma ; induced cell apoptosis.
摘要:
The invention concerns a polypeptide specifically reacting with the antibodies of patients suffering from multiple sclerosis (SEP) and whereof the peptide sequence comprises at least one sequence selected among SEQ ID No: 1 to SEQ ID No: 19, and their equivalent sequences, and the use of this polypeptide in a reagent and a kit for detecting multiple sclerosis, an immunoreactive composition and in a method for fixing, in a biological sample, antibodies characteristic and/or specific of multiple sclerosis.
摘要:
Process for in vitro production of a culture or cell line infected by a viral strain associated with multiple sclerosis. According to the process, a sample is taken from a person with multiple sclerosis, the sample is cultivated in a medium promoting the growth of infected cells to obtain a culture of primary infected cells. A sample of the primary cell culture or a sub-culture of the latter is then cultivated in series, i.e. by means of successive cultures, in said culture medium to obtain the culture or cell line infected by a multiple sclerosis associated virus. The invention is characterized in that the culture medium further contains a beta anti-interferon antibody or antibody which is directed against an antigenically close molecule. Said antibody plays an inhibiting role in viral expression, has long-lasting expression and propagates the viral strain in the culture or cell line.
摘要:
The invention relates to a nucleic material, in the isolated or purified state, comprising a nucleotide sequence selected from the group including sequences SEQ ID NO:93, SEQ ID NO:94, their complementary sequences and their equivalent sequences, in particular nucleotide sequences displaying, for any succession of 100 contiguous monomers, at least 50 % and preferably at least 60 % homology with said sequences SEQ ID NO:93, SEQ ID NO:94 and their complementary sequences, excluding HSERV-9 sequence.
摘要:
The invention concerns a nucleic material, in isolated or purified state, and a nucleotide fragment comprising a nucleotide sequence selected from the group consisting in (i) the sequences SEQ ID NO: 112, SEQ ID NO:114, SEQ ID NO: 117, SEQ ID NO: 120, SEQ ID NO. 124, SEQ ID NO: 130, SEQ ID NO: 141 and SEQ ID NO: 142, (ii) the complementary sequences of sequences (i); and (iii) the sequences equivalent to sequences (ii) and (iii), in particular the sequence having for every series of 100 contiguous monomers, at least 50 %, preferably 70 % homology with sequences (i) and (ii) respectively. The invention also concerns their uses for detecting a retrovirus associated with multiple sclerosis and/or rheumatoid arthritis.
摘要:
The invention concerns in particular a method for detecting superantigen activity in a biological sample, which consists in: demonstrating a majority spread rate of lymphocytes bearing a Vβ 16 and/or Vβ17 determinant or a majority loss rate of lymphocytes bearing a Vβ16 determinant and a method for detecting a pathological condition in a biological sample which consists in demonstrating at least one of the following parameters: a superantigen activity; a stimulation of the production of cytokines such as IL-6 and INF-η; induced cell apoptosis.