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Anti-SOD1 Nanobodies That Stabilize Misfolded SOD1 Proteins Also Promote Neurite Outgrowth in Mutant SOD1 Human Neurons

ALS-linked mutations induce aberrant conformations within the SOD1 protein that are thought to underlie the pathogenic mechanism of SOD1-mediated ALS. Although clinical trials are underway for gene silencing of SOD1, these approaches reduce both wild-type and mutated forms of SOD1. Here, we sought t...

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Autores principales: Kumar, Meenakshi Sundaram, Fowler-Magaw, Megan E., Kulick, Daniel, Boopathy, Sivakumar, Gadd, Del Hayden, Rotunno, Melissa, Douthwright, Catherine, Golebiowski, Diane, Yusuf, Issa, Xu, Zuoshang, Brown, Robert H., Sena-Esteves, Miguel, O’Neil, Alison L., Bosco, Daryl A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9784173/
https://www.ncbi.nlm.nih.gov/pubmed/36555655
http://dx.doi.org/10.3390/ijms232416013
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author Kumar, Meenakshi Sundaram
Fowler-Magaw, Megan E.
Kulick, Daniel
Boopathy, Sivakumar
Gadd, Del Hayden
Rotunno, Melissa
Douthwright, Catherine
Golebiowski, Diane
Yusuf, Issa
Xu, Zuoshang
Brown, Robert H.
Sena-Esteves, Miguel
O’Neil, Alison L.
Bosco, Daryl A.
author_facet Kumar, Meenakshi Sundaram
Fowler-Magaw, Megan E.
Kulick, Daniel
Boopathy, Sivakumar
Gadd, Del Hayden
Rotunno, Melissa
Douthwright, Catherine
Golebiowski, Diane
Yusuf, Issa
Xu, Zuoshang
Brown, Robert H.
Sena-Esteves, Miguel
O’Neil, Alison L.
Bosco, Daryl A.
author_sort Kumar, Meenakshi Sundaram
collection PubMed
description ALS-linked mutations induce aberrant conformations within the SOD1 protein that are thought to underlie the pathogenic mechanism of SOD1-mediated ALS. Although clinical trials are underway for gene silencing of SOD1, these approaches reduce both wild-type and mutated forms of SOD1. Here, we sought to develop anti-SOD1 nanobodies with selectivity for mutant and misfolded forms of human SOD1 over wild-type SOD1. Characterization of two anti-SOD1 nanobodies revealed that these biologics stabilize mutant SOD1 in vitro. Further, SOD1 expression levels were enhanced and the physiological subcellular localization of mutant SOD1 was restored upon co-expression of anti-SOD1 nanobodies in immortalized cells. In human motor neurons harboring the SOD1 A4V mutation, anti-SOD1 nanobody expression promoted neurite outgrowth, demonstrating a protective effect of anti-SOD1 nanobodies in otherwise unhealthy cells. In vitro assays revealed that an anti-SOD1 nanobody exhibited selectivity for human mutant SOD1 over endogenous murine SOD1, thus supporting the preclinical utility of anti-SOD1 nanobodies for testing in animal models of ALS. In sum, the anti-SOD1 nanobodies developed and presented herein represent viable biologics for further preclinical testing in human and mouse models of ALS.
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spelling pubmed-97841732022-12-24 Anti-SOD1 Nanobodies That Stabilize Misfolded SOD1 Proteins Also Promote Neurite Outgrowth in Mutant SOD1 Human Neurons Kumar, Meenakshi Sundaram Fowler-Magaw, Megan E. Kulick, Daniel Boopathy, Sivakumar Gadd, Del Hayden Rotunno, Melissa Douthwright, Catherine Golebiowski, Diane Yusuf, Issa Xu, Zuoshang Brown, Robert H. Sena-Esteves, Miguel O’Neil, Alison L. Bosco, Daryl A. Int J Mol Sci Article ALS-linked mutations induce aberrant conformations within the SOD1 protein that are thought to underlie the pathogenic mechanism of SOD1-mediated ALS. Although clinical trials are underway for gene silencing of SOD1, these approaches reduce both wild-type and mutated forms of SOD1. Here, we sought to develop anti-SOD1 nanobodies with selectivity for mutant and misfolded forms of human SOD1 over wild-type SOD1. Characterization of two anti-SOD1 nanobodies revealed that these biologics stabilize mutant SOD1 in vitro. Further, SOD1 expression levels were enhanced and the physiological subcellular localization of mutant SOD1 was restored upon co-expression of anti-SOD1 nanobodies in immortalized cells. In human motor neurons harboring the SOD1 A4V mutation, anti-SOD1 nanobody expression promoted neurite outgrowth, demonstrating a protective effect of anti-SOD1 nanobodies in otherwise unhealthy cells. In vitro assays revealed that an anti-SOD1 nanobody exhibited selectivity for human mutant SOD1 over endogenous murine SOD1, thus supporting the preclinical utility of anti-SOD1 nanobodies for testing in animal models of ALS. In sum, the anti-SOD1 nanobodies developed and presented herein represent viable biologics for further preclinical testing in human and mouse models of ALS. MDPI 2022-12-16 /pmc/articles/PMC9784173/ /pubmed/36555655 http://dx.doi.org/10.3390/ijms232416013 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kumar, Meenakshi Sundaram
Fowler-Magaw, Megan E.
Kulick, Daniel
Boopathy, Sivakumar
Gadd, Del Hayden
Rotunno, Melissa
Douthwright, Catherine
Golebiowski, Diane
Yusuf, Issa
Xu, Zuoshang
Brown, Robert H.
Sena-Esteves, Miguel
O’Neil, Alison L.
Bosco, Daryl A.
Anti-SOD1 Nanobodies That Stabilize Misfolded SOD1 Proteins Also Promote Neurite Outgrowth in Mutant SOD1 Human Neurons
title Anti-SOD1 Nanobodies That Stabilize Misfolded SOD1 Proteins Also Promote Neurite Outgrowth in Mutant SOD1 Human Neurons
title_full Anti-SOD1 Nanobodies That Stabilize Misfolded SOD1 Proteins Also Promote Neurite Outgrowth in Mutant SOD1 Human Neurons
title_fullStr Anti-SOD1 Nanobodies That Stabilize Misfolded SOD1 Proteins Also Promote Neurite Outgrowth in Mutant SOD1 Human Neurons
title_full_unstemmed Anti-SOD1 Nanobodies That Stabilize Misfolded SOD1 Proteins Also Promote Neurite Outgrowth in Mutant SOD1 Human Neurons
title_short Anti-SOD1 Nanobodies That Stabilize Misfolded SOD1 Proteins Also Promote Neurite Outgrowth in Mutant SOD1 Human Neurons
title_sort anti-sod1 nanobodies that stabilize misfolded sod1 proteins also promote neurite outgrowth in mutant sod1 human neurons
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9784173/
https://www.ncbi.nlm.nih.gov/pubmed/36555655
http://dx.doi.org/10.3390/ijms232416013
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