Buforin II-Escherichia coli's DNA interactome: Routes to elucidate the molecular mechanisms of its antimicrobial activity
The increase of multi-resistant bacteria in the last decade has become a global health issue that requires the development of alternative treatments. Antimicrobial peptides are of great interest due to their high effectiveness and differential mechanisms.Buforin II (BUFII) is a 21 amino acid antibac...
- Autores:
-
Rubio Olaya, Daniela
- Tipo de recurso:
- Fecha de publicación:
- 2021
- Institución:
- Universidad de los Andes
- Repositorio:
- Séneca: repositorio Uniandes
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.uniandes.edu.co:1992/55090
- Acceso en línea:
- http://hdl.handle.net/1992/55090
- Palabra clave:
- Buforin II
Peptide
Interactome
Nanobioconjugate
Escherichia coli
Ingeniería
- Rights
- openAccess
- License
- http://creativecommons.org/licenses/by-nc-nd/4.0/
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dc.title.eng.fl_str_mv |
Buforin II-Escherichia coli's DNA interactome: Routes to elucidate the molecular mechanisms of its antimicrobial activity |
title |
Buforin II-Escherichia coli's DNA interactome: Routes to elucidate the molecular mechanisms of its antimicrobial activity |
spellingShingle |
Buforin II-Escherichia coli's DNA interactome: Routes to elucidate the molecular mechanisms of its antimicrobial activity Buforin II Peptide Interactome Nanobioconjugate Escherichia coli Ingeniería |
title_short |
Buforin II-Escherichia coli's DNA interactome: Routes to elucidate the molecular mechanisms of its antimicrobial activity |
title_full |
Buforin II-Escherichia coli's DNA interactome: Routes to elucidate the molecular mechanisms of its antimicrobial activity |
title_fullStr |
Buforin II-Escherichia coli's DNA interactome: Routes to elucidate the molecular mechanisms of its antimicrobial activity |
title_full_unstemmed |
Buforin II-Escherichia coli's DNA interactome: Routes to elucidate the molecular mechanisms of its antimicrobial activity |
title_sort |
Buforin II-Escherichia coli's DNA interactome: Routes to elucidate the molecular mechanisms of its antimicrobial activity |
dc.creator.fl_str_mv |
Rubio Olaya, Daniela |
dc.contributor.advisor.none.fl_str_mv |
Cruz Jiménez, Juan Carlos |
dc.contributor.author.spa.fl_str_mv |
Rubio Olaya, Daniela |
dc.contributor.jury.spa.fl_str_mv |
Bloch Morel, Natasha Ivonne González Barrios, Andrés Fernando |
dc.subject.keyword.none.fl_str_mv |
Buforin II Peptide Interactome Nanobioconjugate Escherichia coli |
topic |
Buforin II Peptide Interactome Nanobioconjugate Escherichia coli Ingeniería |
dc.subject.themes.none.fl_str_mv |
Ingeniería |
description |
The increase of multi-resistant bacteria in the last decade has become a global health issue that requires the development of alternative treatments. Antimicrobial peptides are of great interest due to their high effectiveness and differential mechanisms.Buforin II (BUFII) is a 21 amino acid antibacterial peptide that is thought to kill bacteria by entering across the membrane and interacting with intracellular molecules that are possibly involved in vital mechanisms. However, these specific interactions are still unknown, and thus far no reports are available in targeted regions or DNA sequences associated with bacterial death. Here, we proposed a study of the interaction between BUFII and the DNA of Escherichia coli using molecular, spectroscopic and microscopic techniques, complemented with whole genome sequencing. We developed an in vitro method to identify the Escherichia coli DNA interactome with BUFII using the BUFII-magnetite nanobioconjugates. This approach allows taking advantage of the strong magnetic response of the conjugates to isolate the interacting moieties. The complete biophysical study conducted here allowed us to put forward the notion that BUFII interacts with DNA very strongly most likely due to electrostatic interactions. As a result, the BUFII-DNA pair can form spherical supramolecular complexes with nanoscale dimensions where DNA is likely supercoiled. The pull-down approach introduced here along with the complementary biophysical techniques might be helpful to improve the rational peptide design and discovery by providing a more robust set of recommendations regarding the targeted interactions with bacterial components responsible for resistance. |
publishDate |
2021 |
dc.date.issued.none.fl_str_mv |
2021 |
dc.date.accessioned.none.fl_str_mv |
2022-02-22T19:50:23Z |
dc.date.available.none.fl_str_mv |
2022-02-22T19:50:23Z |
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Trabajo de grado - Maestría |
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info:eu-repo/semantics/masterThesis |
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info:eu-repo/semantics/acceptedVersion |
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Text |
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http://purl.org/redcol/resource_type/TM |
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acceptedVersion |
dc.identifier.uri.none.fl_str_mv |
http://hdl.handle.net/1992/55090 |
dc.identifier.pdf.spa.fl_str_mv |
25650.pdf |
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instname:Universidad de los Andes |
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reponame:Repositorio Institucional Séneca |
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repourl:https://repositorio.uniandes.edu.co/ |
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http://hdl.handle.net/1992/55090 |
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25650.pdf instname:Universidad de los Andes reponame:Repositorio Institucional Séneca repourl:https://repositorio.uniandes.edu.co/ |
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spa |
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spa |
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http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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info:eu-repo/semantics/openAccess |
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openAccess |
dc.format.extent.spa.fl_str_mv |
15 páginas |
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application/pdf |
dc.publisher.spa.fl_str_mv |
Universidad de los Andes |
dc.publisher.program.spa.fl_str_mv |
Maestría en Ingeniería Biomédica |
dc.publisher.faculty.spa.fl_str_mv |
Facultad de Ingeniería |
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Departamento de Ingeniería Biomédica |
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Universidad de los Andes |
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Al consultar y hacer uso de este recurso, está aceptando las condiciones de uso establecidas por los autores.http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Cruz Jiménez, Juan Carlosvirtual::14774-1Rubio Olaya, Daniela776d20f3-87e4-4c26-9f8c-a63f7d5ef170500Bloch Morel, Natasha IvonneGonzález Barrios, Andrés Fernando2022-02-22T19:50:23Z2022-02-22T19:50:23Z2021http://hdl.handle.net/1992/5509025650.pdfinstname:Universidad de los Andesreponame:Repositorio Institucional Sénecarepourl:https://repositorio.uniandes.edu.co/The increase of multi-resistant bacteria in the last decade has become a global health issue that requires the development of alternative treatments. Antimicrobial peptides are of great interest due to their high effectiveness and differential mechanisms.Buforin II (BUFII) is a 21 amino acid antibacterial peptide that is thought to kill bacteria by entering across the membrane and interacting with intracellular molecules that are possibly involved in vital mechanisms. However, these specific interactions are still unknown, and thus far no reports are available in targeted regions or DNA sequences associated with bacterial death. Here, we proposed a study of the interaction between BUFII and the DNA of Escherichia coli using molecular, spectroscopic and microscopic techniques, complemented with whole genome sequencing. We developed an in vitro method to identify the Escherichia coli DNA interactome with BUFII using the BUFII-magnetite nanobioconjugates. This approach allows taking advantage of the strong magnetic response of the conjugates to isolate the interacting moieties. The complete biophysical study conducted here allowed us to put forward the notion that BUFII interacts with DNA very strongly most likely due to electrostatic interactions. As a result, the BUFII-DNA pair can form spherical supramolecular complexes with nanoscale dimensions where DNA is likely supercoiled. The pull-down approach introduced here along with the complementary biophysical techniques might be helpful to improve the rational peptide design and discovery by providing a more robust set of recommendations regarding the targeted interactions with bacterial components responsible for resistance.El aumento de las bacterias multirresistentes en la última década se ha convertido en un problema sanitario a nivel mundial que requiere el desarrollo de tratamientos alternativos. Los péptidos antimicrobianos son de gran interés debido a su gran eficacia y a sus mecanismos diferenciales. Buforina II (BUFII) es un péptido antibacteriano de 21 aminoácidos que se cree que mata a las bacterias entrando a través de la membrana e interactuando con moléculas intracelulares implicadas en mecanismos vitales. Sin embargo, estas interacciones específicas aún se desconocen, y hasta el momento no se dispone de información asociada a la muerte bacteriana. Aquí proponemos un estudio de la interacción entre BUFII y el ADN de Escherichia coli utilizando técnicas moleculares, espectroscópicas y microscópicas, complementadas con la secuenciación de nueva generación. Desarrollamos un método in vitro para identificar el interactoma de ADN de Escherichia coli con BUFII utilizando los nanobioconjugados BUFII-magnetita. Este enfoque permite aprovechar la fuerte respuesta magnética de los conjugados para aislar las partes interactuantes. El estudio biofísico completo realizado aquí nos permitió plantear la noción de que el BUFII interactúa con el ADN muy fuertemente, probablemente debido a interacciones electrostáticas. Como resultado, la interacción entre BUFII y ADN puede formar complejos supramoleculares esféricos con dimensiones a nanoescala en los que el ADN está probablemente superenrollado. El enfoque de pull-down introducido aquí, junto con las técnicas biofísicas complementarias, podría ser útil para mejorar el diseño y el descubrimiento racional de péptidos, proporcionando un conjunto más robusto de recomendaciones sobre las interacciones dirigidas con los componentes bacterianos responsables de la resistencia.Magíster en Ingeniería BiomédicaMaestría15 páginasapplication/pdfspaUniversidad de los AndesMaestría en Ingeniería BiomédicaFacultad de IngenieríaDepartamento de Ingeniería BiomédicaBuforin II-Escherichia coli's DNA interactome: Routes to elucidate the molecular mechanisms of its antimicrobial activityTrabajo de grado - Maestríainfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/acceptedVersionTexthttp://purl.org/redcol/resource_type/TMBuforin IIPeptideInteractomeNanobioconjugateEscherichia coliIngeniería201512403Publication10c65e28-e393-4bfe-91e5-f3a7d32e6771virtual::14774-110c65e28-e393-4bfe-91e5-f3a7d32e6771virtual::14774-1THUMBNAIL25650.pdf.jpg25650.pdf.jpgIM Thumbnailimage/jpeg27076https://repositorio.uniandes.edu.co/bitstreams/7cc33c3b-2888-4c78-9862-4dcfb82d3bc1/download36a32ecf4b0a30c063d7a6704a1f973bMD53ORIGINAL25650.pdfapplication/pdf3786802https://repositorio.uniandes.edu.co/bitstreams/3102f302-0c4f-449c-9a29-fde7bcaa7484/download94d28467ea6a7902de29776df2a3220eMD51TEXT25650.pdf.txt25650.pdf.txtExtracted texttext/plain71941https://repositorio.uniandes.edu.co/bitstreams/4e36638f-9e3e-4ed2-b270-dc20128af377/downloadc83610a09cdd7e56625629f11fbe5bb5MD521992/55090oai:repositorio.uniandes.edu.co:1992/550902024-03-13 15:17:19.485http://creativecommons.org/licenses/by-nc-nd/4.0/restrictedhttps://repositorio.uniandes.edu.coRepositorio institucional Sénecaadminrepositorio@uniandes.edu.co |