ET12567 (pUZ8002) Escherichia coli Strains

In diesem Artikel erfahren wir, dass Antibiotikaresistenz ein ernstes Problem ist und wir Wege finden müssen, sie zu bekämpfen. Glücklicherweise hat ein bestimmtes Bakterium das Potenzial, mehr Antibiotikaresistenz zu entwickeln, aber es scheint vorerst kein großes Problem zu sein, da das Bakterium durch die Verwendung von E. coli ET12567 (pUZ8002) als Konjugat in einen antibiotikaempfindlichen Stamm umgewandelt werden kann Spender.

E. coli ET12567 (pUZ8002) wurde als ehelicher Spender in vielen anderen Bakterien verwendet, die bereits gegen Antibiotika resistent sind. Einige dieser Bakterien umfassen: Yersinia pestis, Francisella tularensis und Salmonella enterica serovar Typhimurium. Die Mutationen, die in das Genom von E. coli ET12567 über den konjugierten Transferprozess eingeführt wurden, haben es zu einem hervorragenden Kandidaten für die Entwicklung neuer Antibiotika gemacht.

Die Forscher konnten pUZ8002 verwenden, um eine neue Familie von Antibiotika zu entwickeln, die Mechanismen enthalten, die in bestehenden Medikamenten nicht zu finden sind. Diese neuartigen Mechanismen machen diese Verbindungsklasse besonders nützlich gegen Krankheitserreger, die bestehenden Antibiotika widerstehen, weil sie Resistenzmechanismen entwickelt haben, die sie daran hindern

Woher kamen die Bakterien?

Das zur Herstellung von Antibiotika verwendete Bakterium E. coli kommt in der Umwelt und auf vielen verschiedenen Arten von Lebensmitteln vor. Eine erfolgreiche Transformation von E. coli in einen antibiotikaproduzierenden Stamm wurde jedoch von Forschern der University of Texas in Austin erreicht.
Das Projekt begann mit der Untersuchung von Umweltbakterien, die Antibiotika produzieren. Nachdem die für die Antibiotikaproduktion verantwortlichen Gene identifiziert worden waren, transformierten die Forscher E. coli mit diesen Genen. Das Endergebnis: ein Stamm von E. coli, der in der Lage war, ein Antibiotikum namens Teixobactin zu produzieren.

Der Erfolg dieser Transformation unterstreicht die Leistungsfähigkeit der Geneditierung und eröffnet aufregende neue Möglichkeiten für die Entwicklung von Antibiotika in der Zukunft . Diese Forschung könnte auch in Entwicklungsländern Anwendung finden, in denen Antibiotika knapp oder teuer sind.

Blog-Abschnitt: Was sind die Auswirkungen dieser Forschung?
Die Entwicklung dieses E. coli-Stammes könnte zu neuen Wegen zur Herstellung von Antibiotika führen, ohne dass teure oder schwer zu beschaffende Inhaltsstoffe erforderlich sind. Darüber hinaus zeigt diese Studie das Potenzial der Geneditierung zur Schaffung neuartiger Bakterienstämme, die in der Lage sind, wichtige medizinische Produkte herzustellen.

Insgesamt ist diese Forschung ein großer Fortschritt in dem Bemühen, wirksamere Antibiotika zu entwickeln und neue Behandlungsmöglichkeiten zu eröffnen

Was sind Antibiotika?

Antibiotika sind eine Art von Medikamenten zur Behandlung von Infektionen. Sie wirken, indem sie die Bakterien abtöten, die die Infektion verursachen. Antibiotika können von verschiedenen Bakterienarten produziert werden, aber alle wirken auf die gleiche Weise.
Wie werden Antibiotika hergestellt?
Es gibt mehrere Möglichkeiten, wie Antibiotika hergestellt werden können, aber die gebräuchlichste Methode ist die Züchtung eines Wildtyp- (oder „natürlichen“) Bakteriums in einem Labor. Das Bakterium wird in einem Nährmedium gezüchtet und dann einem antibiotischen Molekül ausgesetzt. Wenn das Antibiotikum das Bakterium abtötet, kann es extrahiert und zur Behandlung von Infektionen eingesetzt werden.
Wie wirken Antibiotika?
Antibiotika wirken, indem sie die Funktionsfähigkeit der Bakterien beeinträchtigen. Dadurch sterben die Bakterien schnell ab, wodurch die Infektion in der Regel geheilt wird.

Wie wirken Antibiotika?

Eine erfolgreiche Transformation von Antibiotika, die von einem gramnegativen Wildtyp-Bakterium, E. coli, produziert werden, veranschaulicht den Prozess, durch den Antibiotika hergestellt werden.

  • Antibiotika sind natürliche Substanzen, die schädliche Mikroorganismen abtöten.
  • Um ein Antibiotikum herzustellen, müssen Wissenschaftler zunächst die spezifische Krankheit oder Infektion identifizieren, die sie behandeln möchten, und dann die Bakterien isolieren, die dafür verantwortlich sind.
  • Sobald die Bakterien isoliert sind, können Forscher damit beginnen, ihr Genom zu untersuchen, um Gene zu identifizieren, die für Proteine ​​kodieren, die das Bakterienwachstum fördern.
  • Sie können auch versuchen, diese Gene in andere Bakterien zu kopieren, um ein eigenes Antibiotikum herzustellen. Letztendlich wurden durch diesen Prozess Antibiotika wie Penicillin entwickelt.

Was waren die bioaktiven Moleküle, die sie geschaffen haben?

Die von den Wildtypbakterien erzeugten bioaktiven Moleküle wurden durch die Umwandlung von Acetat in Butyrat und Propionat hergestellt. Von diesen Molekülen ist bekannt, dass sie antibiotische Eigenschaften haben. Was waren die Abnahmen der Zellgröße? Die starke Abnahme der Zellgröße könnte auf eine Abnahme der Produktion von Zellenergie (ATP) oder den tatsächlichen Tod der Zelle zurückzuführen sein. Wenn die Bakterienzellen absterben, würde das erklären, warum keine Glucose mehr in die Zellen aufgenommen wird .

Was haben sie getan, um herauszufinden, welche Gene wichtig sind? Sie untersuchten alle Gene, die am Acetatstoffwechsel beteiligt waren, und betrachteten dann alle Gene, deren Expression sich während des Wachstums mutierter Bakterien veränderte.

Was ist ein Asymmetrie-Gen? Ein Antisense-Oligonukleotid bindet an eine DNA-Sequenz, die eine andere Orientierung hat als die Antisense-Sequenz. Wenn diese beiden Sequenzen aneinander binden, blockieren sie die Transkription, indem sie die Transkription hemmen

Wo würden sie in der Natur zu finden sein?

Gramnegative Bakterien sind in der Natur allgegenwärtig und können an einer Vielzahl von Orten gefunden werden, einschließlich des menschlichen Darms und Bodens. Diese Bakterien produzieren Antibiotika als Abwehr gegen andere Mikroben, was sie zu attraktiven Zielen für die Entwicklung neuer Antibiotika macht . Antibiotika können auch synthetisch hergestellt werden, was jedoch nicht ideal ist, da Bakterien schnell Resistenzen gegen Antibiotika entwickeln. Die „bug-busting“-Eigenschaften synthetischer Antibiotika werden als Antimykotikum in der pharmazeutischen Industrie und in der Landwirtschaft eingesetzt.

ET12567 (pUZ8002) Escherichia coli Strains

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T1 Escherichia coli Strains

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TG1 Escherichia coli Strains

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pUZ8002

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Recombinant Escherichia coli mdtJ Protein (aa 1-121) (strain K12)

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Recombinant Escherichia coli mreD Protein (aa 1-162) (strain K12)

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Recombinant Escherichia coli mscL Protein (aa 1-136) (strain K12)

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Recombinant Escherichia coli narX Protein (aa 1-598) (strain K12)

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Recombinant Escherichia coli nfrB Protein (aa 1-745) (strain K12)

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Recombinant Escherichia coli nikC Protein (aa 1-277) (strain K12)

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Recombinant Escherichia coli oppC Protein (aa 1-302) (strain K12)

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Recombinant Escherichia coli pgaD Protein (aa 1-137) (strain K12)

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Recombinant Escherichia coli psiE Protein (aa 1-136) (strain K12)

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Recombinant Escherichia coli pspC Protein (aa 1-119) (strain K12)

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Recombinant Escherichia coli rcnA Protein (aa 1-274) (strain K12)

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Recombinant Escherichia coli rhtB Protein (aa 1-206) (strain K12)

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Recombinant Escherichia coli rsxE Protein (aa 1-231) (strain K12)

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Recombinant Escherichia coli sapB Protein (aa 1-321) (strain K12)

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Recombinant Escherichia coli sapC Protein (aa 1-296) (strain K12)

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Recombinant Escherichia coli sbmA Protein (aa 1-406) (strain K12)

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Recombinant Escherichia coli secD Protein (aa 1-615) (strain K12)

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Recombinant Escherichia coli secE Protein (aa 1-127) (strain K12)

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Recombinant Escherichia coli secF Protein (aa 1-323) (strain K12)

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Recombinant Escherichia coli tolQ Protein (aa 1-230) (strain K12)

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Recombinant Escherichia coli traA Protein (aa 52-121) (strain K12)

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Recombinant Escherichia coli traX Protein (aa 1-248) (strain K12)

VAng-Lsx02665-100g Creative Biolabs 100 µg 7648.8 EUR

Recombinant Escherichia coli traX Protein (aa 1-248) (strain K12)

VAng-Lsx02665-50g Creative Biolabs 50 µg 4596 EUR

Recombinant Escherichia coli trbA Protein (aa 1-115) (strain K12)

VAng-Lsx02667-100g Creative Biolabs 100 µg 7170 EUR

Recombinant Escherichia coli trbA Protein (aa 1-115) (strain K12)

VAng-Lsx02667-50g Creative Biolabs 50 µg 4118.4 EUR

Recombinant Escherichia coli trbF Protein (aa 1-126) (strain K12)

VAng-Lsx02668-100g Creative Biolabs 100 µg 7203.6 EUR

Recombinant Escherichia coli trbF Protein (aa 1-126) (strain K12)

VAng-Lsx02668-50g Creative Biolabs 50 µg 4150.8 EUR

Recombinant Escherichia coli trbH Protein (aa 1-239) (strain K12)

VAng-Lsx02669-100g Creative Biolabs 100 µg 7616.4 EUR

Recombinant Escherichia coli trbH Protein (aa 1-239) (strain K12)

VAng-Lsx02669-50g Creative Biolabs 50 µg 4563.6 EUR

Recombinant Escherichia coli trbI Protein (aa 1-128) (strain K12)

VAng-Lsx02670-100g Creative Biolabs 100 µg 7220.4 EUR

Recombinant Escherichia coli trbI Protein (aa 1-128) (strain K12)

VAng-Lsx02670-50g Creative Biolabs 50 µg 4167.6 EUR

Recombinant Escherichia coli ubiB Protein (aa 1-546) (strain K12)

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Recombinant Escherichia coli wzzE Protein (aa 1-348) (strain K12)

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Recombinant Escherichia coli yaaH Protein (aa 1-188) (strain K12)

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Recombinant Escherichia coli yadS Protein (aa 1-207) (strain K12)

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Recombinant Escherichia coli yagU Protein (aa 1-204) (strain K12)

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Recombinant Escherichia coli yaiY Protein (aa 1-102) (strain K12)

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Recombinant Escherichia coli yajC Protein (aa 1-110) (strain K12)

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Recombinant Escherichia coli ybfB Protein (aa 1-108) (strain K12)

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Recombinant Escherichia coli ybhL Protein (aa 1-234) (strain K12)

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Recombinant Escherichia coli ybhR Protein (aa 1-368) (strain K12)

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Recombinant Escherichia coli ybjO Protein (aa 1-162) (strain K12)

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Recombinant Escherichia coli yccA Protein (aa 1-219) (strain K12)

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Recombinant Escherichia coli yciB Protein (aa 1-179) (strain K12)

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Recombinant Escherichia coli yciC Protein (aa 1-247) (strain K12)

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Recombinant Escherichia coli ycjF Protein (aa 1-353) (strain K12)

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Recombinant Escherichia coli ydgC Protein (aa 1-111) (strain K12)

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Recombinant Escherichia coli yeaL Protein (aa 1-148) (strain K12)

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Recombinant Escherichia coli yejM Protein (aa 1-586) (strain K12)

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Recombinant Escherichia coli yfbV Protein (aa 1-151) (strain K12)

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Recombinant Escherichia coli yfcA Protein (aa 1-269) (strain K12)

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Recombinant Escherichia coli ygdQ Protein (aa 1-237) (strain K12)

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Recombinant Escherichia coli yggT Protein (aa 1-188) (strain K12)

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Recombinant Escherichia coli yghB Protein (aa 1-219) (strain K12)

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Recombinant Escherichia coli ygiM Protein (aa 23-206) (strain K12)

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Recombinant Escherichia coli yhaH Protein (aa 1-121) (strain K12)

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Recombinant Escherichia coli yhaI Protein (aa 1-118) (strain K12)

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Recombinant Escherichia coli yhhN Protein (aa 1-208) (strain K12)

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Recombinant Escherichia coli yhiD Protein (aa 1-215) (strain K12)

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Recombinant Escherichia coli yibH Protein (aa 1-378) (strain K12)

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Recombinant Escherichia coli yidG Protein (aa 1-120) (strain K12)

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Recombinant Escherichia coli yidH Protein (aa 1-115) (strain K12)

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Recombinant Escherichia coli yihY Protein (aa 1-290) (strain K12)

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Bakteriophage – Ein Virus, das Bakterien infiziert. Es gibt mehrere Mechanismen, die genutzt werden könnten, um Gene in Bakterienzellen zu übertragen: Gezielter Einbau von DNA in Bakteriophagen-DNA, Transformation (bei der einige Bakterien mit einem Plasmid das Phagengen aufnehmen und replizieren können) oder Transduktion (bei der eine nackte DNA-Molekül wird von einem anderen Bakterium aufgenommen und in dessen Genom eingebaut). Bakteriophagen

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