EP1459074A2 - Testsystem zur suche oder pr fung von wirksubstanzen, welche das wachstum und/oder das berleben von nervenzel len beeinflussen - Google Patents
Testsystem zur suche oder pr fung von wirksubstanzen, welche das wachstum und/oder das berleben von nervenzel len beeinflussenInfo
- Publication number
- EP1459074A2 EP1459074A2 EP02798293A EP02798293A EP1459074A2 EP 1459074 A2 EP1459074 A2 EP 1459074A2 EP 02798293 A EP02798293 A EP 02798293A EP 02798293 A EP02798293 A EP 02798293A EP 1459074 A2 EP1459074 A2 EP 1459074A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- hnrnp
- cell
- test system
- growth
- survival
- 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- Withdrawn
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 239000013543 active substance Substances 0.000 title claims abstract description 24
- 230000004083 survival effect Effects 0.000 title claims abstract description 24
- 210000002569 neuron Anatomy 0.000 title claims abstract description 23
- 230000012010 growth Effects 0.000 title claims abstract description 20
- 101001047853 Homo sapiens Heterogeneous nuclear ribonucleoprotein R Proteins 0.000 claims abstract description 57
- 102100023999 Heterogeneous nuclear ribonucleoprotein R Human genes 0.000 claims abstract description 50
- 102100028896 Heterogeneous nuclear ribonucleoprotein Q Human genes 0.000 claims abstract description 41
- 210000004027 cell Anatomy 0.000 claims abstract description 40
- 101710141313 Heterogeneous nuclear ribonucleoprotein Q Proteins 0.000 claims abstract description 39
- 102000004389 Ribonucleoproteins Human genes 0.000 claims abstract description 25
- 108010081734 Ribonucleoproteins Proteins 0.000 claims abstract description 25
- 102000001708 Protein Isoforms Human genes 0.000 claims abstract description 5
- 108010029485 Protein Isoforms Proteins 0.000 claims abstract description 5
- 210000003050 axon Anatomy 0.000 claims description 15
- 210000002241 neurite Anatomy 0.000 claims description 14
- 239000004480 active ingredient Substances 0.000 claims description 12
- 101000839069 Homo sapiens Heterogeneous nuclear ribonucleoprotein Q Proteins 0.000 claims description 8
- 102000047703 human HNRNPR Human genes 0.000 claims description 8
- 230000004770 neurodegeneration Effects 0.000 claims description 7
- 230000006378 damage Effects 0.000 claims description 6
- 108020004999 messenger RNA Proteins 0.000 claims description 6
- 208000015122 neurodegenerative disease Diseases 0.000 claims description 6
- 108091028043 Nucleic acid sequence Proteins 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 238000011321 prophylaxis Methods 0.000 claims description 5
- 201000006474 Brain Ischemia Diseases 0.000 claims description 4
- 206010008120 Cerebral ischaemia Diseases 0.000 claims description 4
- 208000032131 Diabetic Neuropathies Diseases 0.000 claims description 4
- 206010008118 cerebral infarction Diseases 0.000 claims description 4
- 201000006417 multiple sclerosis Diseases 0.000 claims description 4
- 150000007523 nucleic acids Chemical group 0.000 claims description 4
- 239000008194 pharmaceutical composition Substances 0.000 claims description 4
- 208000028389 Nerve injury Diseases 0.000 claims description 3
- 208000027418 Wounds and injury Diseases 0.000 claims description 3
- 210000005260 human cell Anatomy 0.000 claims description 3
- 208000014674 injury Diseases 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000008764 nerve damage Effects 0.000 claims description 3
- 208000024827 Alzheimer disease Diseases 0.000 claims description 2
- 102000008394 Immunoglobulin Fragments Human genes 0.000 claims description 2
- 108010021625 Immunoglobulin Fragments Proteins 0.000 claims description 2
- 230000008921 facial expression Effects 0.000 claims description 2
- 231100000572 poisoning Toxicity 0.000 claims description 2
- 230000000607 poisoning effect Effects 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims description 2
- 108091028664 Ribonucleotide Proteins 0.000 abstract 1
- 239000002336 ribonucleotide Substances 0.000 abstract 1
- 125000002652 ribonucleotide group Chemical class 0.000 abstract 1
- 108090000623 proteins and genes Proteins 0.000 description 48
- 102000004169 proteins and genes Human genes 0.000 description 35
- 210000002161 motor neuron Anatomy 0.000 description 32
- 208000002320 spinal muscular atrophy Diseases 0.000 description 24
- 230000014509 gene expression Effects 0.000 description 13
- 210000000278 spinal cord Anatomy 0.000 description 12
- 241000699670 Mus sp. Species 0.000 description 10
- 108010019372 Heterogeneous-Nuclear Ribonucleoproteins Proteins 0.000 description 9
- 102000006479 Heterogeneous-Nuclear Ribonucleoproteins Human genes 0.000 description 9
- 239000002299 complementary DNA Substances 0.000 description 9
- QAPSNMNOIOSXSQ-YNEHKIRRSA-N 1-[(2r,4s,5r)-4-[tert-butyl(dimethyl)silyl]oxy-5-(hydroxymethyl)oxolan-2-yl]-5-methylpyrimidine-2,4-dione Chemical compound O=C1NC(=O)C(C)=CN1[C@@H]1O[C@H](CO)[C@@H](O[Si](C)(C)C(C)(C)C)C1 QAPSNMNOIOSXSQ-YNEHKIRRSA-N 0.000 description 8
- 230000027455 binding Effects 0.000 description 8
- 239000000284 extract Substances 0.000 description 7
- 230000006870 function Effects 0.000 description 7
- 230000035772 mutation Effects 0.000 description 7
- 210000001519 tissue Anatomy 0.000 description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 241000283707 Capra Species 0.000 description 5
- 101150081851 SMN1 gene Proteins 0.000 description 5
- 101150069235 Snrpn gene Proteins 0.000 description 5
- 210000004556 brain Anatomy 0.000 description 5
- 230000007850 degeneration Effects 0.000 description 5
- 230000003993 interaction Effects 0.000 description 5
- 210000005036 nerve Anatomy 0.000 description 5
- 108090000765 processed proteins & peptides Proteins 0.000 description 5
- 108091032973 (ribonucleotides)n+m Proteins 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 101150009006 HIS3 gene Proteins 0.000 description 4
- 241001529936 Murinae Species 0.000 description 4
- 241000699666 Mus <mouse, genus> Species 0.000 description 4
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 4
- 238000012217 deletion Methods 0.000 description 4
- 230000037430 deletion Effects 0.000 description 4
- 201000010099 disease Diseases 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 239000008267 milk Substances 0.000 description 4
- 210000004080 milk Anatomy 0.000 description 4
- 235000013336 milk Nutrition 0.000 description 4
- 239000013612 plasmid Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000010186 staining Methods 0.000 description 4
- 108020004635 Complementary DNA Proteins 0.000 description 3
- 101710154606 Hemagglutinin Proteins 0.000 description 3
- 101710093908 Outer capsid protein VP4 Proteins 0.000 description 3
- 101710135467 Outer capsid protein sigma-1 Proteins 0.000 description 3
- 101710176177 Protein A56 Proteins 0.000 description 3
- 108700008625 Reporter Genes Proteins 0.000 description 3
- 101100394989 Rhodopseudomonas palustris (strain ATCC BAA-98 / CGA009) hisI gene Proteins 0.000 description 3
- 241000283984 Rodentia Species 0.000 description 3
- 102000004598 Small Nuclear Ribonucleoproteins Human genes 0.000 description 3
- 108010003165 Small Nuclear Ribonucleoproteins Proteins 0.000 description 3
- 239000007983 Tris buffer Substances 0.000 description 3
- VREFGVBLTWBCJP-UHFFFAOYSA-N alprazolam Chemical compound C12=CC(Cl)=CC=C2N2C(C)=NN=C2CN=C1C1=CC=CC=C1 VREFGVBLTWBCJP-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 210000000805 cytoplasm Anatomy 0.000 description 3
- 210000001787 dendrite Anatomy 0.000 description 3
- 239000013613 expression plasmid Substances 0.000 description 3
- 239000013604 expression vector Substances 0.000 description 3
- 239000000185 hemagglutinin Substances 0.000 description 3
- 238000011534 incubation Methods 0.000 description 3
- 239000012139 lysis buffer Substances 0.000 description 3
- 239000003550 marker Substances 0.000 description 3
- 239000002609 medium Substances 0.000 description 3
- 230000002018 overexpression Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 210000002966 serum Anatomy 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 3
- 238000001262 western blot Methods 0.000 description 3
- ROHFNLRQFUQHCH-YFKPBYRVSA-N L-leucine Chemical compound CC(C)C[C@H](N)C(O)=O ROHFNLRQFUQHCH-YFKPBYRVSA-N 0.000 description 2
- QIVBCDIJIAJPQS-VIFPVBQESA-N L-tryptophane Chemical compound C1=CC=C2C(C[C@H](N)C(O)=O)=CNC2=C1 QIVBCDIJIAJPQS-VIFPVBQESA-N 0.000 description 2
- ROHFNLRQFUQHCH-UHFFFAOYSA-N Leucine Natural products CC(C)CC(N)C(O)=O ROHFNLRQFUQHCH-UHFFFAOYSA-N 0.000 description 2
- 229930193140 Neomycin Natural products 0.000 description 2
- 108010025020 Nerve Growth Factor Proteins 0.000 description 2
- 102000015336 Nerve Growth Factor Human genes 0.000 description 2
- 239000000020 Nitrocellulose Substances 0.000 description 2
- 241000283973 Oryctolagus cuniculus Species 0.000 description 2
- 229920001213 Polysorbate 20 Polymers 0.000 description 2
- 102000008935 SMN Complex Proteins Human genes 0.000 description 2
- 108010049037 SMN Complex Proteins Proteins 0.000 description 2
- QIVBCDIJIAJPQS-UHFFFAOYSA-N Tryptophan Natural products C1=CC=C2C(CC(N)C(O)=O)=CNC2=C1 QIVBCDIJIAJPQS-UHFFFAOYSA-N 0.000 description 2
- 102000009322 Tudor domains Human genes 0.000 description 2
- 108050000178 Tudor domains Proteins 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000003376 axonal effect Effects 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- 230000008436 biogenesis Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000010367 cloning Methods 0.000 description 2
- 238000000749 co-immunoprecipitation Methods 0.000 description 2
- 230000034994 death Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000000256 facial nerve Anatomy 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 230000003053 immunization Effects 0.000 description 2
- 239000012133 immunoprecipitate Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 210000004185 liver Anatomy 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 210000005230 lumbar spinal cord Anatomy 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 239000003068 molecular probe Substances 0.000 description 2
- 229960004927 neomycin Drugs 0.000 description 2
- 229940053128 nerve growth factor Drugs 0.000 description 2
- 230000001537 neural effect Effects 0.000 description 2
- 229920001220 nitrocellulos Polymers 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000008506 pathogenesis Effects 0.000 description 2
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 2
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 102000004196 processed proteins & peptides Human genes 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000007261 sc medium Substances 0.000 description 2
- 230000009870 specific binding Effects 0.000 description 2
- 238000011895 specific detection Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 102000013498 tau Proteins Human genes 0.000 description 2
- 108010026424 tau Proteins Proteins 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 238000001890 transfection Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 230000001228 trophic effect Effects 0.000 description 2
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 description 2
- NWGZOALPWZDXNG-LURJTMIESA-N (2s)-5-(diaminomethylideneamino)-2-(dimethylamino)pentanoic acid Chemical compound CN(C)[C@H](C(O)=O)CCCNC(N)=N NWGZOALPWZDXNG-LURJTMIESA-N 0.000 description 1
- 108010085238 Actins Proteins 0.000 description 1
- 102000007469 Actins Human genes 0.000 description 1
- 229920000936 Agarose Polymers 0.000 description 1
- HJCMDXDYPOUFDY-WHFBIAKZSA-N Ala-Gln Chemical compound C[C@H](N)C(=O)N[C@H](C(O)=O)CCC(N)=O HJCMDXDYPOUFDY-WHFBIAKZSA-N 0.000 description 1
- 108091003079 Bovine Serum Albumin Proteins 0.000 description 1
- 102100031144 Coilin Human genes 0.000 description 1
- 102100031673 Corneodesmosin Human genes 0.000 description 1
- 101710139375 Corneodesmosin Proteins 0.000 description 1
- 230000004568 DNA-binding Effects 0.000 description 1
- 101100203482 Drosophila melanogaster Smn gene Proteins 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 208000034454 F12-related hereditary angioedema with normal C1Inh Diseases 0.000 description 1
- 241001435060 Ferenta Species 0.000 description 1
- 102100039556 Galectin-4 Human genes 0.000 description 1
- -1 Ge in 3 Proteins 0.000 description 1
- HVLSXIKZNLPZJJ-TXZCQADKSA-N HA peptide Chemical compound C([C@@H](C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](C(C)C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC(O)=CC=1)C(=O)N[C@@H](C)C(O)=O)NC(=O)[C@H]1N(CCC1)C(=O)[C@@H](N)CC=1C=CC(O)=CC=1)C1=CC=C(O)C=C1 HVLSXIKZNLPZJJ-TXZCQADKSA-N 0.000 description 1
- 239000012981 Hank's balanced salt solution Substances 0.000 description 1
- 101710141315 Heterogeneous nuclear ribonucleoprotein R Proteins 0.000 description 1
- 101000608765 Homo sapiens Galectin-4 Proteins 0.000 description 1
- 102100034343 Integrase Human genes 0.000 description 1
- 102000009664 Microtubule-Associated Proteins Human genes 0.000 description 1
- 108010020004 Microtubule-Associated Proteins Proteins 0.000 description 1
- 101000839070 Mus musculus Heterogeneous nuclear ribonucleoprotein Q Proteins 0.000 description 1
- 101100203487 Mus musculus Smn1 gene Proteins 0.000 description 1
- 101100148113 Mus musculus Snrpn gene Proteins 0.000 description 1
- 208000010428 Muscle Weakness Diseases 0.000 description 1
- 206010028289 Muscle atrophy Diseases 0.000 description 1
- 208000029578 Muscle disease Diseases 0.000 description 1
- 206010028372 Muscular weakness Diseases 0.000 description 1
- 101710143583 Na(+)/H(+) exchange regulatory cofactor NHE-RF2 Proteins 0.000 description 1
- 102000007339 Nerve Growth Factor Receptors Human genes 0.000 description 1
- 108010032605 Nerve Growth Factor Receptors Proteins 0.000 description 1
- 206010056677 Nerve degeneration Diseases 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 108700026244 Open Reading Frames Proteins 0.000 description 1
- 238000012408 PCR amplification Methods 0.000 description 1
- 241000233805 Phoenix Species 0.000 description 1
- 239000012083 RIPA buffer Substances 0.000 description 1
- 102000044126 RNA-Binding Proteins Human genes 0.000 description 1
- 108700020471 RNA-Binding Proteins Proteins 0.000 description 1
- 108010092799 RNA-directed DNA polymerase Proteins 0.000 description 1
- 102000039471 Small Nuclear RNA Human genes 0.000 description 1
- 108020004688 Small Nuclear RNA Proteins 0.000 description 1
- 108020003224 Small Nucleolar RNA Proteins 0.000 description 1
- 102000042773 Small Nucleolar RNA Human genes 0.000 description 1
- 101150113275 Smn gene Proteins 0.000 description 1
- 208000003954 Spinal Muscular Atrophies of Childhood Diseases 0.000 description 1
- 239000013504 Triton X-100 Substances 0.000 description 1
- 229920004890 Triton X-100 Polymers 0.000 description 1
- 102000004142 Trypsin Human genes 0.000 description 1
- 108090000631 Trypsin Proteins 0.000 description 1
- 102100028458 Zinc finger E-box-binding homeobox 2 Human genes 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010171 animal model Methods 0.000 description 1
- 230000006907 apoptotic process Effects 0.000 description 1
- 108010054176 apotransferrin Proteins 0.000 description 1
- YDGMGEXADBMOMJ-UHFFFAOYSA-N asymmetrical dimethylarginine Natural products CN(C)C(N)=NCCCC(N)C(O)=O YDGMGEXADBMOMJ-UHFFFAOYSA-N 0.000 description 1
- 230000001363 autoimmune Effects 0.000 description 1
- 230000008335 axon cargo transport Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- UDSAIICHUKSCKT-UHFFFAOYSA-N bromophenol blue Chemical compound C1=C(Br)C(O)=C(Br)C=C1C1(C=2C=C(Br)C(O)=C(Br)C=2)C2=CC=CC=C2S(=O)(=O)O1 UDSAIICHUKSCKT-UHFFFAOYSA-N 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 210000004899 c-terminal region Anatomy 0.000 description 1
- 230000030833 cell death Effects 0.000 description 1
- 239000006285 cell suspension Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 208000027746 childhood spinal muscular atrophy Diseases 0.000 description 1
- 230000008045 co-localization Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000009223 counseling Methods 0.000 description 1
- 229940009976 deoxycholate Drugs 0.000 description 1
- KXGVEGMKQFWNSR-LLQZFEROSA-N deoxycholic acid Chemical compound C([C@H]1CC2)[C@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@@H](CCC(O)=O)C)[C@@]2(C)[C@@H](O)C1 KXGVEGMKQFWNSR-LLQZFEROSA-N 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 229940042399 direct acting antivirals protease inhibitors Drugs 0.000 description 1
- 230000013020 embryo development Effects 0.000 description 1
- 210000002257 embryonic structure Anatomy 0.000 description 1
- 230000003492 excitotoxic effect Effects 0.000 description 1
- 231100000063 excitotoxicity Toxicity 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012894 fetal calf serum Substances 0.000 description 1
- 102000005525 fibrillarin Human genes 0.000 description 1
- 108020002231 fibrillarin Proteins 0.000 description 1
- 230000037433 frameshift Effects 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 210000002216 heart Anatomy 0.000 description 1
- 208000016861 hereditary angioedema type 3 Diseases 0.000 description 1
- 230000001900 immune effect Effects 0.000 description 1
- 238000003365 immunocytochemistry Methods 0.000 description 1
- 238000003364 immunohistochemistry Methods 0.000 description 1
- 238000001114 immunoprecipitation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 210000003292 kidney cell Anatomy 0.000 description 1
- 238000011813 knockout mouse model Methods 0.000 description 1
- 101150066555 lacZ gene Proteins 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 108700023265 mouse Hnrpr Proteins 0.000 description 1
- 230000020763 muscle atrophy Effects 0.000 description 1
- 201000000585 muscular atrophy Diseases 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 239000002773 nucleotide Substances 0.000 description 1
- 125000003729 nucleotide group Chemical group 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 108010051876 p80-coilin Proteins 0.000 description 1
- 239000000137 peptide hydrolase inhibitor Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 230000008488 polyadenylation Effects 0.000 description 1
- 108010055896 polyornithine Proteins 0.000 description 1
- 229920002714 polyornithine Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001323 posttranslational effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000002731 protein assay Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 108091008146 restriction endonucleases Proteins 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 210000004116 schwann cell Anatomy 0.000 description 1
- 210000003497 sciatic nerve Anatomy 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 210000001044 sensory neuron Anatomy 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 210000000952 spleen Anatomy 0.000 description 1
- 230000011604 spliceosomal snRNP assembly Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000004960 subcellular localization Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 230000014616 translation Effects 0.000 description 1
- 239000012588 trypsin Substances 0.000 description 1
- 210000004291 uterus Anatomy 0.000 description 1
- 239000013603 viral vector Substances 0.000 description 1
- 230000003612 virological effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
- G01N33/5091—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing the pathological state of an organism
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
- G01N33/5008—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
- G01N33/5008—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics
- G01N33/502—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics for testing non-proliferative effects
- G01N33/5026—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics for testing non-proliferative effects on cell morphology
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
- G01N33/5008—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics
- G01N33/5044—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics involving specific cell types
- G01N33/5058—Neurological cells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
- G01N33/6893—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids related to diseases not provided for elsewhere
- G01N33/6896—Neurological disorders, e.g. Alzheimer's disease
Definitions
- Test system for the search or testing of active substances that influence the growth and / or survival of nerve cells.
- the invention relates to a test system for searching or testing active substances which influence the growth and / or survival of nerve cells, active substances obtainable therewith, uses of the test system and uses of the active substances.
- RNP Ribonucleoproteins
- the RNP includes the "small nuclear” ribonucleoproteins (snRNP) and the “heterogeneous nuclear” ribonucleoproteins (hnRNP).
- snRNP small nuclear ribonucleoproteins
- hnRNP heterogeneous nuclear ribonucleoproteins
- snRNPs are known to be binding partners for the "survival motor neuron” (SMN) protein (Liu and Dreyfuss, 1996; Meister et al 2000).
- SSN survival motor neuron
- SMN is found in complex with some other proteins such as Gemin 2, Ge in 3, and Gemin 4, binds to U snRNAs (Fischer et al 1997, Buhler et al 1999; Selenko et al 2001) and is involved in the biogenesis and function of snRNPs, involved in the "splicing" process of the pre-mRNA and the processing and modification of rRNA (Pellizzoni et al Curr Biol 11: 1074-1088, 2001; Friesen et al Mol Cell 7: 1111-1117,2001).
- SMA spinal muscular atrophy
- the SMN protein does not appear to be a survival factor for motor neurons, since overexpression of the normal SMN protein does not protect motor neurons from cell death, e.g. caused by withdrawal of trophic factors (Cisterni et al Neurobiol Dis 8: 240-251, 2001). Furthermore, it is questionable whether the splicing process of mRNA in motor neurons is impaired in SMA (Jablonka et al 2000; Tucker et al 2001). Despite the progress in understanding the function of SMN in pre-mRNA splicing, little is known about the pathogenesis in SMA. An open question remains as to why reduced amounts of functional SMN protein in all tissues can lead to a specific death of motor neurons.
- SMN fulfills additional motor neuron-specific tasks. This function could be based on the interaction with motor neuron-specific proteins. In addition to nuclear structures, SMN is also localized in the cytoplasm of motor neurons, including the dendrites and axons (Pagliardini et al., 2000).
- SMA is one of the neurodegenerative diseases that are characterized by degeneration of nerve cells. These include Alzheimer's, diabetic neuropathy, multiple sclerosis and the complications of cerebral ischemia. Prophylaxis or therapy of these diseases is currently, if at all, only possible to a limited extent. New methods for the search for active substances as well as active substances for the prophylaxis or therapy of these diseases are urgently needed.
- the invention is therefore based on the technical problem of specifying a test system with which active substances can be identified which are suitable for the prophylaxis and / or treatment of neurodegenerative diseases and / or nerve damage from injuries, and also such active substances. Findings on which the invention is based.
- hnRNP-R and hnRNP-Q although ubiquitously found in cells in the organism, are most strongly expressed during spinal cord embryogenesis, 11) that hnRNP-R is essentially in the cytoplasm is localized by motor neurons, especially m their axons, less in axons of sensory neurons and m) that the overexpression of hnRNP-R or hnRNP-Q in nerve cells leads to a considerably increased growth of neurites.
- the basis of the invention is therefore the surprising finding that the increased expression of heterogeneous nuclear ribonucleoproteins R and Q (hnRNP-R and hnRNP-Q) significantly increases / demands the growth of neurites.
- the invention teaches a test system for searching or testing active substances which influence the growth and / or survival of nerve cells, whereby a cell is brought into contact with at least one prospective active substance and subsequently in this cell at least one of the Ribonucleoproteins hnRNP-R and / or hnRNP-Q and / or a splicmg isoform of hnRNP-R and / or of hnRNP-Q are determined and the determined amount of this ribonucleoprotem is compared with the amount of this ribonucleoprotem in a cell which is not with the prospective active substance has been brought into contact, the use of the test system according to the invention for the search for active substances which stimulate the growth and / or survival of nerve cells or which stimulate the growth of neurites and / or axons, an active substance obtainable with a Test system according to the invention, the active ingredient in a cell, preferably a human cell, in particular
- human hnRNP-R The sequence of human hnRNP-R is known under the accession number AF000364.1. A newer version is known under the accession number NM_005826 (see also SEQ.ID 33 for the protein [p] and SEQ.ID 34 for the nucleic acid [n] coding therefor). Sequences of human hnRNP-Q (3 splicing isoforms Q1, Q2 and Q3) are known under the accession numbers AY034483, AY034482 and AY034481, respectively (Ql [p]: SEQ.
- mice hnRNP-R is known under the accession number AF441128 (p: SEQ.-ID 41, n: SEQ.-ID 42).
- the sequence of mouse hnRNP-Q is known under the accession number AF093821 (p: SEQ. ID 43, n: SEQ. ID 44).
- the cells and / or ribonucleoproteins used can originate from various organisms, for example be of murine origin or originate from rodents.
- the ribonucleoprotein is a human ribonucleoprotein and / or the cell is a human nerve cell.
- the cell can be mesodermal or endodermal, and preferably human.
- the ribonucleoprotein can with a specific Antibodies or antibody fragments are detected.
- Such antibodies can be obtained, for example, by immunizing rodents with the ribonucleoprotein or a partial sequence thereof.
- a mimicrimolecule can also be used for this, ie a synthetic compound that binds with at least the same specificity at the same binding site as the binding site of the antibody.
- the ribonucleoprotein can also be detected by the detection of its mRNA. This can be done with the aid of nucleotide sequences which hybridize specifically with all or part of the nucleotide sequence of hnRNP-R or of hnRNP-Q, for example using RT-PCR (reverse transcriptase poly-chain reaction). It is of independent importance in connection with the detection of hnRNP-R or hnRNP-Q that it can also be used to diagnose a neurodegenerative disease or to control its course. For this purpose, a tissue sample is taken from an organism and nerve cells from this are subjected to an analysis for one or both of the ribonucleoproteins mentioned, as described above. The amount of ribonucleoprotein determined can then be used to draw conclusions about the presence of the disease (low level). In this respect, the findings according to the invention are also suitable for examining the pathogenesis of the diseases using, for example, rodents.
- An active ingredient according to the invention increases the amount of preferably human hnRNP-R and / or preferably human hnRNP-Q (including all splicing isoforms).
- Such an active ingredient can encode a nucleic acid sequence for preferably human hnRNP-R or for preferably human hnRNP-Q or for a mimicripeptide therefor contain.
- Such active substances can be introduced into the target cells, for example, by means of viral or non-viral vectors.
- a mimicripeptide to one of the ribonucleoproteins mentioned is a peptide which leads to the same requirement for the growth of neurites and / or axons as the underlying ribonucleoprotein.
- This can be a nuclear acid sequence coding for a partial sequence of the ribonucleoprotem, with mutations optionally being attached.
- the active ingredient can also contain human hnRNP-R and / or hnRNP-Q or a facial expression compound.
- a mimic compound can also be produced synthetically and can have non-natural amino acids or can be of a non-peptide chemical structure.
- An active ingredient according to the invention can be used in particular for the production of a pharmaceutical composition for the treatment and / or prophylaxis of neurodegenerative diseases or nerve damage from injuries or poisoning, in particular Alzheimer's, diabetic neuropathy, multiple sclerosis and / or damage after cerebral ischemia.
- Example 1 Discovery of hnRNP-R and hnRNP-Q as binding partner for SMN protein.
- a yeast (yeast) -2 hybrid screen was carried out to isolate potential SMN-interacting proteins.
- a “cDNA” was used which encodes exon 2b-7 murine SMN (DiDonato et al., 1997).
- the cDNA was isolated from the mouse brain RNA by RT-PCR (PCR primer: Smn2bBHlup TTA TGG ATC CAT GCT CTA AAG AAC GGT GAC ATT TG, SEQ.-ID 1, and SmnBHllow AGA AGG ATC CCC ATC TCC TGA GAC AGA GCT G, SEQ ID 2).
- the N-termmale Part was not used to select against the interaction with SIP-1 / Gem ⁇ n2, which binds very strongly in this region and would otherwise have been isolated on the screen as an already known interaction partner.
- the cDNA was cloned by linker PCR with the plasmid pAS2-1 (Clontech, Palo Alto, CA 94303) behind the DNA binding domain of GAL4 (PCR primer: Smn2bBHlup TTA TGG ATC CAT GCT CTA AAG AAC GGT GAC ATT TG, SEQ .-ID 3, and SmnBHllow AGA AGG ATC CCC ATC TCC TGA GAC AGA GCT G SEQ.-ID 4).
- the screen was carried out with the yeast strains CG1945 and Y190 (reporter genes lacZ and HIS3, Clontech) according to the manufacturer's instructions.
- SMN m pAS2-1 selection marker TRP1, Clontech
- cDNA library from mouse brain, in pACT2, selection marker LEU2, Clontech
- SC medium high density
- 5mM 3-AT (3-Ammo-1,2,4-T ⁇ azol is a competitive inhibitor of the enzyme encoded by the HIS3 gene. 5-MM 3-AT (3-AT) is used as a metabolic inhibitor. The sensitivity of the screen can be regulated by adding 3-AT ) added.
- hnRNP-R and hnRNP-Q / gry-rbp coding for the complete open reading frame was isolated by RT-PCR of RNA from mouse brain.
- the primers for this are based on the sequence from the database (Genbank).
- hnRNP-R the 5 'sequence was previously determined by 5' RACE (5 'RACE Kit, Clontech).
- Example 3 Specific binding of the SMN protein with hnRNP-R and hnRNP-Q
- Co-immunoprecipitations were carried out in order to detect a specific binding of the SMN-protein with hnRNP-R and hnRNP-Q m sucker cells.
- a cell line namely the human embryonic kidney cell HEK293 (ATCC, Manassas, VA 20108, USA) with expression plasmids containing the cDNAs from fused with the FLAG tag. Smn and hnRNP-R or hnRNP-Q co-transfected.
- the cells were washed with PBS and with lysis buffer (20mM Tris pH 7.4, 137mM NaCl, 10% Glycerol, 1% Triton X-100 2mM EDTA, 50mM Na-ß-Glycerophosphate, 20mM Na-Pyrophosphate , Protease inhibitors) lysed to produce protein extracts.
- lysis buffer (20mM Tris pH 7.4, 137mM NaCl, 10% Glycerol, 1% Triton X-100 2mM EDTA, 50mM Na-ß-Glycerophosphate, 20mM Na-Pyrophosphate , Protease inhibitors
- anti-hnRNP-R and anti-hnRNP-Q antiserum which are obtained by immunizing rabbits with the N-termmal peptides with the sequence: MANQVNGNAVQLKEEEEP, SEQ.-ID 9, and MA-TEHVNGNGTEEPMDTT, SEQ.-ID 10, were incubated with ProtemA agarose (Röche) in lysis buffer. This suspension was incubated with 100 ⁇ g protein extract overnight at 4 ° C. The immunoprecipitates were washed three times with lysis buffer and boiled in Laemmlipuffer (Laemmli, 1970).
- the extracts were separated on 10% SDS polyacrylic amide gels and blotted onto nitrocellulose membranes. Unspecific binding parts were blocked by incubation with 5% milk powder in TBS-T (20 mM Tris-Cl, pH 7.6, 137 mM NaCl, 0.2% Tween20). The membranes were incubated with monoclonal anti-Smn antibody (Dianova, D-20148 Hamburg, Germany) or anti-FLAG-Tag antibody (Sigma, St. Louis, MO 63103). These were detected with specific HRP-coupled secondary antibodies using chemiluminescence (ECL, Amersham) according to the manufacturer's instructions. It was found that the Immunoprecipitation of hnRNP-R and hnRNP-Q the SMN protein was co-immunoprecipitated.
- Example 4 Missing binding to hnRNP-R and to hnRNP-Q of mutant SMN proteins corresponding to the SMN proteins of SMA patients
- the cDNA corresponding to exon 2b-exon 7 was cloned into the HindIII and BamHI sites of the plasmid Bluescript (Stratagene, La Jolla, CA 92037-1073, USA). This cDNA was used as a template for further PCR amplifications with the mismatch primers. The lack of binding to hnRNP-R and to hnRNP-Q of mutant SMN proteins corresponding to the SMN proteins of SMA patients was shown by co-immunoprecipitation experiments.
- HEK293 cells were transfected with expression vectors with the cDNAs of hnRNP-R or hnRNP-Q and expression vectors with the mutated SMN cDNAs.
- the immunoprecipitates were cleaned and detected as described above. The result showed that only wild-type SMN, but not the mutated versions of this protein, could be coimmunoprecipitated by hnRNP-R and -Q.
- Example 5 Detection of hnRNP-R and hnRNP-Q in nerve cell extracts with the help of specific antibodies or RT-PCR
- the extracts were mixed with the same volumes of Laemmli buffer (125 mM Tris pH 6.8, 4% SDS, 10% ß-mercaptoethanol, 20% glycerol, 0.004% bromophenol blue), denatured by boiling and stored at -20 ° C ,
- the extracts were on 10% polyacrylamide gels separated and transferred to nitrocellulose membranes. Unspecific binding sites were blocked by incubation with 5% milk powder in TBS-T (0.2% Tween20).
- the rabbit antiserum against the N-terminal peptide of hnRNP-R or hnRNP-Q in a dilution of 1/1000 m 5% milk powder in TBS-T was used as the primary antibody. Pre-absorbed antibodies were used as controls.
- the antisera were incubated with the peptides used to generate the antibodies and these complexes were removed.
- the antisera was incubated with the membranes for 1 hour at room temperature and then washed three times for 15 minutes with TBS-T.
- HRP-coupled goat anti-camel antibodies (Röche, Mannheim) diluted 1/10000 in TBS-T + 5% milk powder were used as secondary antibodies.
- the membranes were washed three times and incubated with the detection reagent (ECL, Amersham) for 1 minute. Chemiluminescence was visualized by exposure to X-ray films.
- HnRNP-R and hnRNP-Q are expressed in most neural and non-neural tissues.
- HnRNP-R was detected especially in the brain, but also in the spinal cord, heart, lungs, liver and spleen.
- HnRNP-Q showed the strongest expression of the brain, lungs and liver.
- expression is regulated in a development-specific manner.
- a comparison of the expression of embryonic (embryonic day 14 and 19) and born mice (postnatal day 2 and 15 and adult) showed the strongest expression in the late embryonic stage (E19) with rapid decrease after birth for both proteins.
- RT-PCR was used to determine the amount of transcripts. Different tissues were removed from adult mice and the spinal cord from mice at different stages of development.
- RT-PCR was carried out with specific primer pairs for hnRNP-R, hnRNP-Q and ß-actin (as a control), (ß-actin-s GTG GGC CGC CCT AGG CAC CAG, SEQ.-ID 27, ß-actm -as CTC TTT AAT GTC ACG CAC GAT TTC, SEQ.-ID 28, RNP1F ATG GCT AAT CAG GTG AAT GGT AAT G, SEQ.-ID 29, RNP282R AGTA CAG ACA GAG TCC CTT CCT C, SEQ.-ID 30, grylF ATG GCT ACA GAA CAT GTT AAT GG, SEQ.ID 31, gry273R AGC ACT GCC AAT GCG CCG TCT TC, SEQ.ID 32).
- the result confirmed the results of Western
- Example ⁇ Specific detection of hnRNP-R and hnRNP-Q and of SMN in the spinal cord with the help of antibodies.
- an onoclonal antibody against mouse Smn (Dianova, D-20148 Hamburg, Germany) with a concentration of 1 ⁇ g / ml or a monoclonal antibody against phosphorylated Tau-1 (clone PC1C6 Boehrmger Mannheim) with a concentration of 10 ⁇ g / ml and Antiserum against hnRNP-R (1: 1000) added.
- Example 7 Specific detection of hnRNP-R and hnRNP-Q and of SMN in axons of cultured motor neurons and in the axons of different nerves with the aid of antibodies.
- cultured murine embryonic motor neurons were examined by immunohistochemistry , Pregnant mice (14 days pc) were killed by cervical dislocation. The embryos were removed from the uterus and decapitated. The ventro-lateral area of the lumbar spinal cord was isolated and transferred to HBSS + 10 ⁇ M b-mercaptoethanol.
- the cultured motor neurons were fixed in acetone / methanol (1: 1) after 7 days and incubated with antibodies against phosphorylated tau protein in a concentration of 1 ⁇ g / ml and polyclonal antiserum against hnRNP-R (1: 1000), followed by three times washed with TBS-T, incubated with secondary antibody (Cy3TM-conjugated goat anti-rabbit IgG, Dianova, and Alexa488-conjugated goat anti-mouse IgG, Molecular Probes), washed again three times and embedded in Mowiol. Immunoreactivity was demonstrated with a confocal microscope (Leica).
- a strong hnRNP-R-specific staining was found in axons, but not in the surrounding Schwann cells.
- Example 8 Transfection of nerve cells with nucleotide sequences, coding for hnRNP-R or hnRNP-Q, increased growth of the axons PC-12 cells were transfected with expression constructs (see “Cloning hnRNP-R and hnRNP-Q and Expression of the Proteins") for hnRNP-R and hnRNP-Q.
- Nucleotide sequences coding for hemagglutin (HA) are added to the corresponding genes.
- the expression plasmids contain a neomycin resistance gene.
- G418 ⁇ antibiotic for the selection of neomycin-resistant clones, Life Technologies, Rockville, MD 20849-6482, USA
- stable cell lines were selected which had integrated the expression plasmid with the antibiotic resistance gene.
- Western blot analysis with anti-HA-Tag antibodies identified clones which stably expressed hnRNP-R or hnRNP-Q. These stable cell lines were determined by growth in medium with a low serum content (2% fetal calf serum, 4% horse serum instead of 5% + 10%) and the addition of 10ng / ml nerve growth factor (NGF) to differentiate and outgrow neurites stimulated.
- NGF nerve growth factor
- the cells were fixed with acetone / methanol (1: 1) and by immunocytochemistry with Anti-Map2 (stains microtubule-associated protein 2 and thus dendrites and axons) and anti-phosphorylated tau antibody (stains above all) Axons) stained.
- the length of the neurites in a comparison cell line and in the stable cell lines expressing hnRNP-R or -Q was measured and compared on scanned images using the Scionlmage program (Scion Corporation, Frederick, MD 21701, USA).
- the cell lines expressing stable hnRNP-R and hnRNP-Q (2 each) showed a 5 or 4.5-fold increased outgrowth of the neurites compared to the control.
- hnRNP R heterogeneous nuclear ribonucleoprotein R
- autoimmune antibody immunological relationship with hnRNP P. Nucleic.Acids .Res. 26 (2): 439-445; Rodrigues, NR, Owen, N., Talbot, K., Ignatius, J., Dubowitz, V., and Davies, KE (1995) Delitions in the survival motor neuron gene on 5ql3 in autosomal recessive spinal muscular atrophy.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Immunology (AREA)
- Molecular Biology (AREA)
- Chemical & Material Sciences (AREA)
- Urology & Nephrology (AREA)
- Hematology (AREA)
- Cell Biology (AREA)
- Food Science & Technology (AREA)
- General Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Tropical Medicine & Parasitology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Toxicology (AREA)
- Physiology (AREA)
- Neurology (AREA)
- Neurosurgery (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Peptides Or Proteins (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2001164556 DE10164556A1 (de) | 2001-12-14 | 2001-12-14 | Testsystem zur Suche oder Prüfung von Wirksubstanzen, welche das Wachstum und/oder das Überleben von Nervenzellen beeinflussen |
| DE10164556 | 2001-12-14 | ||
| PCT/DE2002/004686 WO2003052415A2 (de) | 2001-12-14 | 2002-12-13 | Testsystem zur suche oder prüfung von wirksubstanzen, welche das wachstum und/oder das überleben von nervenzellen beeinflussen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1459074A2 true EP1459074A2 (de) | 2004-09-22 |
Family
ID=7711197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02798293A Withdrawn EP1459074A2 (de) | 2001-12-14 | 2002-12-13 | Testsystem zur suche oder pr fung von wirksubstanzen, welche das wachstum und/oder das berleben von nervenzel len beeinflussen |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1459074A2 (de) |
| AU (1) | AU2002363841A1 (de) |
| DE (1) | DE10164556A1 (de) |
| WO (1) | WO2003052415A2 (de) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1133993A1 (de) * | 2000-03-10 | 2001-09-19 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. | Verbingungen zur Behandlung der spinalen Muskelatrophie |
| JP2002101890A (ja) * | 2000-09-29 | 2002-04-09 | Inst Of Physical & Chemical Res | Rna結合タンパク質 |
-
2001
- 2001-12-14 DE DE2001164556 patent/DE10164556A1/de not_active Ceased
-
2002
- 2002-12-13 WO PCT/DE2002/004686 patent/WO2003052415A2/de not_active Ceased
- 2002-12-13 EP EP02798293A patent/EP1459074A2/de not_active Withdrawn
- 2002-12-13 AU AU2002363841A patent/AU2002363841A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03052415A3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2002363841A1 (en) | 2003-06-30 |
| AU2002363841A8 (en) | 2003-06-30 |
| DE10164556A1 (de) | 2003-07-03 |
| WO2003052415A3 (de) | 2003-11-27 |
| WO2003052415A2 (de) | 2003-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sarantseva et al. | Apolipoprotein E-mimetics inhibit neurodegeneration and restore cognitive functions in a transgenic Drosophila model of Alzheimer's disease | |
| DE69622701T2 (de) | Hemmung von tau-tau-verknüpfung | |
| Noakes et al. | Aberrant differentiation of neuromuscular junctions in mice lacking s-laminin/laminin β2 | |
| DE69819345T2 (de) | Für den capsaicin rezeptor kodierende nukleinsäuresequenzen und dem capsaicin rezeptor ähnliche polypeptide und ihre verwendung | |
| Hattori et al. | A novel DISC1-interacting partner DISC1-Binding Zinc-finger protein: implication in the modulation of DISC1-dependent neurite outgrowth | |
| DE69332163T2 (de) | Neue Amyloid-Precursor-Proteine und Verfahren zur deren Verwendung | |
| Miguel et al. | Both cytoplasmic and nuclear accumulations of the protein are neurotoxic in Drosophila models of TDP-43 proteinopathies | |
| Solowska et al. | Pathogenic mutation of spastin has gain-of-function effects on microtubule dynamics | |
| AT500379A2 (de) | Tau-proteine | |
| DE60019948T2 (de) | Humanin, ein Polypeptid, welches neuronales Absterben unterdrückt | |
| DE69819696T2 (de) | Verfahren zum nachweis beta-amyloid-reduzierenden-agenzien | |
| EP1161524B1 (de) | Zellen, die ein amyloidvorlauferprotein und ein a-sekretase coexprimieren und deren anwendungen in testverfahren und diagnostik | |
| DE10131899A1 (de) | In vitro-Screening-Assay für gamma-Secretase | |
| DE69738302T2 (de) | Neues semaphorin-gen: semaphorin y | |
| EP2154153A1 (de) | Mutantes Alpha-Synuklein und Verwendungsverfahren dafür | |
| Jang et al. | GJA1 depletion causes ciliary defects by affecting Rab11 trafficking to the ciliary base | |
| JP6033844B2 (ja) | タウタンパク質の多重突然変異体およびヒトタウオパチーを再現するためのその使用 | |
| WO2003052415A2 (de) | Testsystem zur suche oder prüfung von wirksubstanzen, welche das wachstum und/oder das überleben von nervenzellen beeinflussen | |
| US20090175848A1 (en) | Modulation of the Cooperativity Between the Ion Channels TRPM5 and TRPA1 | |
| DE60123074T2 (de) | Modulation von gamma-secretase aktivität | |
| Zhao et al. | Localization of Cx26, Cx32 and Cx43 in myelinating Schwann cells of mouse sciatic nerve during postnatal development | |
| EP1395834B1 (de) | Screeningverfahren mit bnpi und dnpi | |
| DE60311097T2 (de) | Promotor sequenz des menschlichen 5-ht7 rezeptors | |
| DE60038025T2 (de) | Hochaffinitäts-cholintransporter | |
| Hara et al. | Localization of septin 8 in murine retina, and spatiotemporal expression of septin 8 in a murine model of photoreceptor cell degeneration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20040714 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: TRANZISKA,ANN-KATHRIN, ZENTRUM FUER MOLEKULARE Inventor name: ROSSOLL, WILFRIED Inventor name: SENDTNER, MICHAEL |
|
| 19U | Interruption of proceedings before grant |
Effective date: 20040816 |
|
| 19W | Proceedings resumed before grant after interruption of proceedings |
Effective date: 20050201 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: JULIUS-MAXIMILIANS-UNIVERSITAET WUERZBURG |
|
| 17Q | First examination report despatched |
Effective date: 20070823 |
|
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20080304 |