DK200401821A - Fremgangsmåde til in vitro molekylær udvikling af proteinfunktion - Google Patents

Fremgangsmåde til in vitro molekylær udvikling af proteinfunktion Download PDF

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DK200401821A
DK200401821A DK200401821A DKPA200401821A DK200401821A DK 200401821 A DK200401821 A DK 200401821A DK 200401821 A DK200401821 A DK 200401821A DK PA200401821 A DKPA200401821 A DK PA200401821A DK 200401821 A DK200401821 A DK 200401821A
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stranded polynucleotide
population
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polynucleotide molecules
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Furebring Christina
Carlsson Roland
Borrebaeck Carl
Hager Ann-Christin Malmborg
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Alligator Bioscience Ab
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Priority claimed from GB0211369A external-priority patent/GB2388604B/en
Priority claimed from US10/321,195 external-priority patent/US7153655B2/en
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Description

reaktionsvolumenet, varigheden af fordøjelsesreaktionen, temperaturen af reaktionsblandingen, pH af reaktionsblandingen, længden af de enkeltstrengede moder-polynukleotidsekvenser, mængden af enkeltstrengede polynukleotidmolekyler og puffersammensætningen af reaktionsblandingen.
Figure DK200401821AD00021
PATENTKRAV 1. Fremgangsmåde til frembringelse af en polynukleotidsekvens eller population af sekvenser ud fra enkeltstrengede moderpolynukleotidsekvenser, og som indkoder én eller flere proteinmotiver, idet fremgangsmåden omfatter trinnene, hvor man a) tiivejebringer en første population af enkeltstrengede polynukleotid-molekyler og en nummer to population af enkeltstrengede polynukleotid-molekyier, idet den første og nummer to populationen tilsammen udgør plus- og minusstrenge af moderpolynukleotidsekvenser; b) udfører en reaktion til fordøjelse af den første og nummer to populationen af enkeltstrengede polynukleotidmolekyler med en exonuklease for at frembringe tilsvarende populationer af enkeltstrengede polynukleotidfrag-menter; c) bringer de polynukleotidfragmenter, der er frembragt fra plusstrengene, i berøring med fragmenter, der er frembragt fra minusstrengene; og d) formerer de fragmenter, som hybridiserer til hinanden for at frembringe i det mindste én polynukleotidsekvens, der indkoder én eller flere protein-motiver, som har ændrede egenskaber sammenlignet med det eller de proteinmotiver, som indkodes af moderpolynukleotiderne, hvorved der i trin b) i det mindste er én parameter i den reaktion, der anvendes til fordøjelse af den første population af enkeltstrengede polynukleotidmolekyler, der er forskellig fra den eller de ækvivalente parametre, der anvendes i reaktionen til fordøjelse af nummer to populationen af enkeltstrengede polynukleotidmolekyler. 2. Fremgangsmåde ifølge krav 1, hvorved reaktionsparameteren vælges blandt exonukleasetypen, exonukleasekoncentrationen, reaktionsvolumenet, varigheden af fordøjelsesreaktionen, temperaturen af reaktionsblandingen, pH af reaktionsblandingen, længden af de enkeltstrengede moderpolynukleotidsekvenser, mængden af enkeltstrengede polynukleotidmolekyler og puffersammensætningen af reaktionsblandingen. 3. Fremgangsmåde ifølge krav 1 eller 2, hvorved den exonuklease, der anvendes til fordøjelse af den første population af enkeltstrengede polynukleotidmolekyler, er forskellig fra den exonuklease, der anvendes til fordøjelse af nummer to populationen af enkeltstrengede polynukleotidmolekyler. 4. Fremgangsmåde ifølge krav 3, hvorved den exonuklase, der anvendes til fordøjelse af den første population af enkeltstrengede polynukleotidmolekyler, er en 3'-exo-nuklease og den exonuklease, der anvendes til fordøjelse af nummer to populationen af enkeltstrengede polynukleotidmolekyler er en 5'-exonuklease. 5. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved den exonukleasekoncentration der anvendes til fordøjelse af den første population af enkeitstrengede polynukleotidmolekyler, er forskellig fra den exonukleasekoncentration, der anvendes til fordøjelse af nummer to populationen af enkeltstrengede polynukleotidmolekyler. 6. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved det reaktionsvolumen, der anvendes til fordøjelse af den første population af enkeltstrengede polynukleotidmolekyler, er forskellig fra det reaktionsvolumen, der anvendes til fordøjelse af nummer to populationen af enkeltstrengede polynukleotidmolekyler. 7. Fremgangsmåde ifølge et hvilket som helst af de fregående krav, hvorved varigheden af den fordøjelsesreaktion, der anvendes til fordøjelsen af den første population af enkeltstrengede polynukleotidmolekyler. er forskellig fra varigheden af den fordøjelsesreaktion, der anvendes til fordøjelse af nummer to populationen af enkeltstrengede polynukleotidmolekyler. 8. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved temperaturen af den reaktionsblanding der anvendes til fordøjelse af den første population af enkeltstrengede polynukleotidmolekyler, er forskellig fra temperaturen af den reaktionsblanding, der anvendes til fordøjelse af nummer to populationen af enkeltstrengede polynukleotidmolekyler. 9. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved pH af den reaktionsblanding, der anvendes ti! fordøjelse af den første population af enkeltstrengede polynukleotidmolekyler, er forskellig fra pH-værdien af den reaktions blanding, der anvendes til fordøjelse af nummer to populationen af enkeltstrengede polynukleotidmolekyler. 10. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved længden af polynukleotiderne i den første population af enkeltstrengede polynukleotidmolekyler er forskellig fra længden af polynukleotiderne i nummer to populationen af enkeltstrengede polynukleotidmolekyler. 11. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved puffersammensætningen af den reaktionsblanding, der anvendes til fordøjelse af den første population af enkeltstrengede polynukleotidmolekyler, er forskellig fra puffer-sammensætningen af den reaktionsblanding, der anvendes til fordøjelse af nummer to populationen af enkeltstrengede polynukleotidmolekyler. 12. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved mængden af enkeltstrengede polynukleotidmolekyler i den første population af enkeltstrengede polynukleotidmolekyler er forskellig fra mængden af enkeltstrengede polynukleotidmolekyler i nummer to populationen af enkeltstrengede polynukleotidmolekyler. 13. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved den første population af enkeltstrengede polynukleotidmolekyler udgør plusstrenge af moderpolynukleotidsekvenser, og nummer to populationen af enkeltstrengede polynukleotidmolekyler udgør minusstrenge af moderpolynukleotidsekvenser, 14. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved polynukleotidmolekylerne i trin a) er DNA-molekyler. 15. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved trin c) yderligere omfatter, at man tilsætter primersekvenser, som hybridisere til 3'- og/eller 5'-enderne af i det mindste et af moderpolynukleotiderne under hybridiseringsbetingelser. 16. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved den exonuklease, der anvendes til at fordøje den første og/eller nummre to populationen af enkeltstrengede polynukleotidmolekyler er valgt fra gruppen bestående af BAL31,
Exonuklease I, Exonuklease V, Exonuklease VII, Exonuklease T7gen6, bakteriofag lambda exonuklease og Exonuklease Rec Jf. 17. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved en moderpolynukleotidsekvens eller -sekvenser underkastes mutagenese. 18. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved én eller begge af populationen af fragmenter, der er frembragt i trin b), underkastes mutagenese. 19. Fremgangsmåde ifølge krav 17 eller 18, hvorved mutagenesen er fejltilbøjelig PCR. 20. Fremgangsmåde ifølge et hvilket som helst af de foreågende krav, hvorved trin b) udføres for at frembringe populationer af enkeltstrengede fragmenter med varierende længder. 21. Fremgangsmåde ifølge krav 20, hvorved trin b) reguleres for at frembringe en population af enkeltstrengede fragmenter med en genemsnitiig længde på mere end omkring 50 nukleotider. 22. Fremgangsmåde ifølge et hvilket som helst af de foregående krav og som yderligere omfatter det trin, hvor man eksprimerer i det mindste én polynukleo-tidsekvens, der er frembragt i trin d), for at frembringe det indkodede polypeptid. 23. Fremgangsmåde ifølge krav 22 og som yderligere omfatter trinnet, hvor man tester det indkodede polypeptid for ønskede egenskaber. 24. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved moderpolynukleotidsekvensen indkoder et antistof eller fragment deraf. 25. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved moderpolynukleotidsekvensen indkoder et enzym. 26. Fremgangsmåde ifølge et hvilket som helst af de foregående krav, hvorved moderpolynukleotidsekvensen indkoder et antigen. 27. Fremgangsmåde til fremstilling af et polypeptid med ønskede egenskaber, idet fremgangsmåden omfatter de følgende trin: a) frembringelse af forskellige former af et moderpolynukleotid ved anvendelse af en fremgangsmåde ifølge et hvilket som helst af kravene 1 til 26; b) eksprimerer de forskellige polynukleotider, der er frembragt i trin a), for at frembringe forskellige polypeptider; c) screening af de forskellige polypeptider for ønskede egenskaber; og d) udvælgelse af et polypeptid med ønskede egenskaber fra de forskellige polypeptider. 28. Polypeptid opnået ved en fremgangsmåde ifølge krav 27. 29. Farmaceutisk sammensætning omfattende et polypeptid ifølge krav 28 og en farmaceutisk acceptabel bærer. 30. Polypeptid ifølge krav 28 til anvendelse i medicin. 31. Anvendelse af et polypeptid ifølge krav 28 i fremstillingen af et lægemiddel til behandling, terapi og/eller diagnose afen sygdom. 32. Fremgangsmåde til fremstilling af en farmaceutisk sammensætning, hvilken fremgangsmåde omfatter, at man efter identifikationen af et polynukleotid og/eller et indkodet polypeptid med ønskede egenskaber ved en fremgangsmåde ifølge et hvilket som helst af kravene 1 til 26, tilsætter polynukleotidet og/eller det indkodede polypeptid til en farmaceutisk acceptabel bærer. 33. Fremgangsmåde som omfatter, at man efter identifikation af et polynukleotid og/eller et indkodet polypeptid med ønskede egenskaber ved en fremgangsmåde ifølge et hvilket som helst af kravene 1 til 26, anvender dette polynukleotid og/eller indkodede polypeptid helt eller delvis inden for medicinen. 34. Fremgangsmåpde ifølge krav 33, hvorved anvendelsen inde for medicinen er i behandlingen, terapien og/eller diagnosen af en sygdom. 35. Fremgangsmåde som omfatter, at man efter identifikation af et polynukleotid med ønskede egenskaber ifølge en fremgangsmåde ifølge et hvilket som helst af kravene 1 til 26, anvender dette polynukleotid til påvisning af og/eller formering af et målpolynukleotid i en prøve.
DK200401821A 2002-05-17 2004-11-23 Fremgangsmåde til in vitro molekylær udvikling af proteinfunktion DK200401821A (da)

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GB0211369A GB2388604B (en) 2002-05-17 2002-05-17 A method for in vitro molecular evolution of protein function
US10/321,195 US7153655B2 (en) 1998-06-16 2002-12-17 Method for in vitro molecular evolution of protein function involving the use of exonuclease enzyme and two populations of parent polynucleotide sequence
PCT/GB2003/002102 WO2003097834A2 (en) 2002-05-17 2003-05-16 A method for in vitro molecular evolution of protein function

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AU2003230027A1 (en) 2003-12-02
CA2485506C (en) 2012-02-28
JP4372679B2 (ja) 2009-11-25
US7262012B2 (en) 2007-08-28
DE60312507T2 (de) 2007-12-06
CA2485506A1 (en) 2003-11-27
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EP1504098A2 (en) 2005-02-09
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AU2003230027A8 (en) 2003-12-02

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