EP0572641A1 - Stimulant de la division de cellules animales - Google Patents

Stimulant de la division de cellules animales

Info

Publication number
EP0572641A1
EP0572641A1 EP19930902113 EP93902113A EP0572641A1 EP 0572641 A1 EP0572641 A1 EP 0572641A1 EP 19930902113 EP19930902113 EP 19930902113 EP 93902113 A EP93902113 A EP 93902113A EP 0572641 A1 EP0572641 A1 EP 0572641A1
Authority
EP
European Patent Office
Prior art keywords
cells
gene
recombinant
region
nucleotides
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19930902113
Other languages
German (de)
English (en)
Inventor
Michael Strauss
Andre Lieber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Max Planck Gesellschaft zur Foerderung der Wissenschaften eV
Original Assignee
Max Planck Gesellschaft zur Foerderung der Wissenschaften eV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Max Planck Gesellschaft zur Foerderung der Wissenschaften eV filed Critical Max Planck Gesellschaft zur Foerderung der Wissenschaften eV
Publication of EP0572641A1 publication Critical patent/EP0572641A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
    • C12N15/09—Recombinant DNA-technology
    • C12N15/11—DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
    • C12N15/113—Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides; Antisense DNA or RNA; Triplex- forming oligonucleotides; Catalytic nucleic acids, e.g. ribozymes; Nucleic acids used in co-suppression or gene silencing
    • C12N15/1135—Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides; Antisense DNA or RNA; Triplex- forming oligonucleotides; Catalytic nucleic acids, e.g. ribozymes; Nucleic acids used in co-suppression or gene silencing against oncogenes or tumor suppressor genes
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
    • C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
    • C07K14/4701—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
    • C07K14/4702—Regulators; Modulating activity
    • C07K14/4705—Regulators; Modulating activity stimulating, promoting or activating activity
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
    • C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
    • C07K14/4701—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
    • C07K14/4746—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used p53
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/82—Translation products from oncogenes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00—Medicinal preparations containing peptides
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N2310/00—Structure or type of the nucleic acid
    • C12N2310/30—Chemical structure
    • C12N2310/31—Chemical structure of the backbone
    • C12N2310/315—Phosphorothioates

Definitions

  • the invention relates to a means for stimulating the
  • Immortal cell lines can either be obtained directly from certain tumors or can be derived from primary cells that have been isolated from certain tissues.
  • the spontaneous emergence of an immortal cell line is an extremely rare event, since at least two mutations are probably required for this.
  • tumor viruses have therefore often been used as inducers of immortalization.
  • these had the disadvantage that they also caused a frequently undesirable tumorigenic change in the cells.
  • DD-WP 265165 it has already been proposed to use the recombinants with the gene for the large T antigen of the polyomavirus to improve the immortalization process. In principle, this solved the problem of effective immortalization without simultaneous tumorigenic changes.
  • the speed of cell division is usually not affected by this method.
  • REPLACEMENT LEAF Many animal and human cells have a dividing potential limited to approx. 50-60 cell divisions without immortalization.
  • the aim of the invention is to create and use an agent for the general stimulation of the division activity of animal and human cells in culture, both with regard to the utilization of the natural division potential and with regard to the speed of the cell cycle.
  • the agent according to the invention is characterized in that it contains as active substance one or more nucleotide sequences with a complementary sequence (antisense) to certain areas of the mRNA of tumor suppressor genes or other genes which have a negative effect on cell division activity.
  • the antisense nucleotide sequence preferably consists of a synthetic oligonucleotide with a length of at least 15 nucleotides, a length of 18-21 nucleotides being preferred.
  • the oligonucleotide must be in a nuclease resistant form, with the phosphothioate form being particularly useful.
  • Sequences which are complementary to a region of the 5 ′ end, the region around the start codon, a region of an exon or a region at an intron-exon junction of the gene in question are primarily used as antisense nucleotide sequences.
  • Complementary sequences to the tumor suppressor gene retinoblastoma gene, p53 gene or the E-cadherin are preferably selected.
  • Examples of specific sequences of the active substance in the agent according to the invention are 3'-CAGTACGGCGGGTTTTGG-5 'and 3'-AGCAAGTGAAAATGACTC-5'.
  • Oligonucleotides sterilized by alcohol precipitation, in sterile dist. Dissolved water and added in a concentration of 5 - 30 M in the culture medium without serum. The oligonucleotides can also be mixed with lipofectin in order to achieve an even more effective uptake by the cells. The cells are incubated with the oligonucleotide-containing medium for several days. The number of cells is checked daily in parallel batches
  • HEL primary human lung fibroblasts
  • Oligonucleotides for at least 7 days Within 10 days, at least 3 times the number of cells becomes with this cell type
  • Pairing with the antisense oligonucleotide is degraded.
  • the immunological protein detection shows that at the latest 3 days after the start of the treatment with oligonucleotides
  • the treated culture is left in the confluent for more than 7 days
  • the agent according to the invention makes it possible to significantly increase the number of cell divisions per unit time. Its application also enables the cultivation of cells that cannot otherwise be cultivated. This enables great progress in both biotechnological substance production and in basic biological medical research.
  • a further embodiment of the invention consists in not adding the antisense nucleotide sequence to stimulate cell growth, but in generating it in the cell to be cultivated. This is achieved in that a recombinant with an expressible antisense sequence is introduced into the cells by transfection.
  • the preferred sequence consists of 50-500 nucleotides.
  • the recombinant according to the invention contains the antisense nucleotide sequence in the reading direction after a strong promoter.
  • the sequence preferably consists of complementary sequences of the tumor suppressor gene retinoblastoma gene, p53 gene or E-cadherin.
  • a particularly suitable sequence consists of the first 360 nucleotides of the mRNA coding sequence of the retinoblastoma gene.
  • the T7 promoter in combination with its homologous RNA polymerase is particularly suitable as a promoter for the recombinant.
  • a recombinant is produced, a selected sequence, preferably 50-500 nucleotides long, being cloned from the relevant tumor suppressor gene in antisense orientation behind a strong promoter.
  • This recombinant is preferably transfected into the relevant cells together with a selection marker and the gene of T7 RNA polymerase according to methods known per se. After selection for the presence of the marker (e.g. pac), cells are obtained whose division activity is clearly stimulated.
  • the marker e.g. pac
  • oligonucleotide with the sequence 3'-rCAGTACGGCGGGTTTTGG-5 ' is synthesized as a phosphothioate by a known method on an automatic synthesizer (Applied Biosystems) and dried.
  • Approximately 100 OD units are dissolved in 100 l of H 2 O, adjusted to 0.3 M Na acetate and precipitated with 10 volumes of 96% ethanol at -70 ° C.
  • the precipitate is centrifuged off and dissolved in 0.5 ml of sterile water. After measuring the concentration, dilute to 1 ⁇ * -q / ⁇ by adding water.
  • This solution is diluted 60 ⁇ in 1 ml of cell culture medium, which corresponds to a concentration of 10 ⁇ cM. This solution is applied to the cells previously sown in a 5 cm culture dish.
  • Cells used at a density of 5 x 10 cells per dish There are 8 dishes with oligonucleotide and without (control). After one hour, 1 ml of medium with 10% serum is added. The following day, the cells are harvested from a dish and counted in a counting chamber. The results are shown graphically (see Figure 2) and show a much faster increase in the number of cells from the 2nd to the 10th day. After 10 days, a subculture is created, which is treated again with oligonucleotide in the manner described above. The renewed daily cell count results in basically the same curve, whereby the difference after the 1st and 2nd day is more clearly recognizable than in the first round.
  • An oligonucleotide with the sequence 3'-AGCAAGTGAAAATGACTC-5 ' is prepared as described under 1, prepared for use and added to the cell culture.
  • the inclusion of a growth curve by daily cell counting results in principle in the same curve as in Figure 2, but after 10 days there are not 3.5 times, but only 2.5 times more cells.
  • the oligonucleotides of Examples 1 and 2 are used in combination in a concentration of 5 M each, and the cell number is determined daily. This results in a steeper curve increase with a multiple of the number of cells compared to the control cells after 10 days.
  • Example 4
  • the gene of the T7 RNA polymerase modified by a nuclear localization signal with the poly (A) signal of the thymidine kinase gene was obtained as a BglII / PvuII fragment (3267 bp) from pMTT7N (Lieber et al. (1989) Nucl.Acids Res 17: 8485-8493) and inserted into the retroviral vector pM6pac.
  • the gene of T7 RNA polymerase is under the control of the "early" SV40 promoter. Cell clones expressing this recombinant can be selected with puromycin.
  • the plasmid can be packaged in a retrovirus. From several tested restriction fragments of the cDNA of the human retinoblastoma (Rb) gene a 360 bp fragment (Hpal / Asp718) was found, which encompasses the 5'-untranslated region and the l. Exon of the Rb gene covers, as suitable for cell division stimulation by means of anitsense Rb RNA expression. This fragment was cloned into the pBluescript KS vector cut with Asp718 / EcoRI and treated with phosphatase by ligation of the cohesive Asp718 ends and subsequent filling in of the 5 'protruding Hpal and EcoRI ends with Klenow polymerase and ring closure. A recombinant was selected by sequencing with T7 primer which contains the fragment of the Rb gene in the antisense (3 '5') direction behind the T7 promoter
  • T7asRbl Modified T7 RNA polymerase coexpressed in mammalian cells highly efficiently transcribes (? 25000 RNA molecules / cell) a gene under the T7 promoter (Lieber et al. (1993) Methods Enzymol. Vol. 217, in press). Both plasmids were cleaned using a CsCl gradient.
  • NIH 3T3 cells embryonic cells
  • 225 __l ⁇ are in a 15 ml Falcon tube. 2 .0 with S / * q pT7asRbl and 2 9 pM6SVT7N presented. 25 / ⁇ . 2.5 M CaCl 2 . are added and with vortex mixing 250 ⁇ -1 2xHBS buffer pH 6.96 in the DNA
  • antisense RNA which is generated by a human Rb gene in mouse cells, has an expression-inhibiting effect.

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Genetics & Genomics (AREA)
  • Molecular Biology (AREA)
  • Zoology (AREA)
  • Biochemistry (AREA)
  • Biophysics (AREA)
  • General Health & Medical Sciences (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Medicinal Chemistry (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • Biomedical Technology (AREA)
  • Oncology (AREA)
  • Biotechnology (AREA)
  • General Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Wood Science & Technology (AREA)
  • Immunology (AREA)
  • Cell Biology (AREA)
  • Physics & Mathematics (AREA)
  • Plant Pathology (AREA)
  • Microbiology (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Un stimulant de la divison de cellules animales et humaines a des applications dans les domaines de la recherche fondamentale biomédicale, en biotechnologie et dans l'industrie pharmaceutique. Ce stimulant se caractérise par des séquences de nucléotides à séquence complémentaire (anti-sens) de domaines déterminés de l'ARNm de gènes suppresseurs de tumeurs ou d'autres gènes ayant un effet négatif sur la division cellulaire. En tant que séquence de nucléotides on utilise de préférence des oligonucléotides synthétiques ayant au moins 15 nucléotides, de préférence 18 à 21 nucléotides, de longueur. On ajoute au milieu de culture une quantité de stimulant comprise entre 5 et 30 muM, sa concentration devant rester essentiellement constante pendant la culture.
EP19930902113 1991-12-18 1992-12-17 Stimulant de la division de cellules animales Withdrawn EP0572641A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914142452 DE4142452A1 (de) 1991-12-18 1991-12-18 Mittel zur stimulierung der teilungsaktivitaet tierischer zellen
DE4142452 1991-12-18

Publications (1)

Publication Number Publication Date
EP0572641A1 true EP0572641A1 (fr) 1993-12-08

Family

ID=6447798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930902113 Withdrawn EP0572641A1 (fr) 1991-12-18 1992-12-17 Stimulant de la division de cellules animales

Country Status (3)

Country Link
EP (1) EP0572641A1 (fr)
DE (1) DE4142452A1 (fr)
WO (1) WO1993013204A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5759776A (en) * 1995-06-05 1998-06-02 California Pacific Medical Center Targets for breast cancer diagnosis and treatment
US5776683A (en) * 1996-07-11 1998-07-07 California Pacific Medical Center Methods for identifying genes amplified in cancer cells
US5830723A (en) * 1996-08-13 1998-11-03 Regents Of The University Of Minnesota Method for immortalizing chicken cells

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5087617A (en) * 1989-02-15 1992-02-11 Board Of Regents, The University Of Texas System Methods and compositions for treatment of cancer using oligonucleotides
JPH06501160A (ja) * 1990-09-17 1994-02-10 ザ リージェンツ オブ ザ ユニバーシティ オブ カリフォルニア 細胞の増殖をコントロールするための方法及び組成物

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9313204A2 *

Also Published As

Publication number Publication date
WO1993013204A2 (fr) 1993-07-08
WO1993013204A3 (fr) 1993-08-05
DE4142452A1 (de) 1993-06-24

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