CD46 knock-out using CRISPR/Cas9 editing of hTERT immortalized human cells modulates complement activation.
The kidney is especially sensitive to diseases associated with overactivation of the complement system. While most of these diseases affect kidney glomeruli and the microvasculature, there is also evidence for tubulointerstitial deposition of complement factors. Complement inactivating factors on ce...
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Online Access: | https://doi.org/10.1371/journal.pone.0214514 |
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doaj-13007d80ad5743ecace28388764e333e2021-03-03T20:45:26ZengPublic Library of Science (PLoS)PLoS ONE1932-62032019-01-01144e021451410.1371/journal.pone.0214514CD46 knock-out using CRISPR/Cas9 editing of hTERT immortalized human cells modulates complement activation.Matthias WieserTeresa FrancisciDaniel LacknerTilmann BuerckstuemmerKamilla WasnerWolf EilenbergAnton StiftMarkus WahrmannGeorg A BöhmigJohannes GrillariRegina Grillari-VoglauerThe kidney is especially sensitive to diseases associated with overactivation of the complement system. While most of these diseases affect kidney glomeruli and the microvasculature, there is also evidence for tubulointerstitial deposition of complement factors. Complement inactivating factors on cell membranes comprise CD55, CD59 and CD46, which is also termed membrane cofactor protein (MCP). CD46 has been described as localized to glomeruli, but especially also to proximal tubular epithelial cells (RPTECs). However, human cell culture models to assess CD46 function on RPTECs are still missing. Therefore, we here performed gene editing of RPTEC/TERT1 cells generating a monoclonal CD46-/- cell line that did not show changes of the primary cell like characteristics. In addition, factor I and CD46-mediated cleavage of C4b into soluble C4c and membrane deposited C4d was clearly reduced in the knock-out cell line as compared to the maternal cells. Thus, human CD46-/- proximal tubular epithelial cells will be of interest to dissect the roles of the epithelium and the kidney in various complement activation mediated tubulointerstitial pathologies or in studying CD46 mediated uropathogenic internalization of bacteria. In addition, this gives proof-of-principle, that telomerized cells can be used in the generation of knock-out, knock-in or any kind of reporter cell lines without losing the primary cell characteristics of the maternal cells.https://doi.org/10.1371/journal.pone.0214514 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Matthias Wieser Teresa Francisci Daniel Lackner Tilmann Buerckstuemmer Kamilla Wasner Wolf Eilenberg Anton Stift Markus Wahrmann Georg A Böhmig Johannes Grillari Regina Grillari-Voglauer |
spellingShingle |
Matthias Wieser Teresa Francisci Daniel Lackner Tilmann Buerckstuemmer Kamilla Wasner Wolf Eilenberg Anton Stift Markus Wahrmann Georg A Böhmig Johannes Grillari Regina Grillari-Voglauer CD46 knock-out using CRISPR/Cas9 editing of hTERT immortalized human cells modulates complement activation. PLoS ONE |
author_facet |
Matthias Wieser Teresa Francisci Daniel Lackner Tilmann Buerckstuemmer Kamilla Wasner Wolf Eilenberg Anton Stift Markus Wahrmann Georg A Böhmig Johannes Grillari Regina Grillari-Voglauer |
author_sort |
Matthias Wieser |
title |
CD46 knock-out using CRISPR/Cas9 editing of hTERT immortalized human cells modulates complement activation. |
title_short |
CD46 knock-out using CRISPR/Cas9 editing of hTERT immortalized human cells modulates complement activation. |
title_full |
CD46 knock-out using CRISPR/Cas9 editing of hTERT immortalized human cells modulates complement activation. |
title_fullStr |
CD46 knock-out using CRISPR/Cas9 editing of hTERT immortalized human cells modulates complement activation. |
title_full_unstemmed |
CD46 knock-out using CRISPR/Cas9 editing of hTERT immortalized human cells modulates complement activation. |
title_sort |
cd46 knock-out using crispr/cas9 editing of htert immortalized human cells modulates complement activation. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS ONE |
issn |
1932-6203 |
publishDate |
2019-01-01 |
description |
The kidney is especially sensitive to diseases associated with overactivation of the complement system. While most of these diseases affect kidney glomeruli and the microvasculature, there is also evidence for tubulointerstitial deposition of complement factors. Complement inactivating factors on cell membranes comprise CD55, CD59 and CD46, which is also termed membrane cofactor protein (MCP). CD46 has been described as localized to glomeruli, but especially also to proximal tubular epithelial cells (RPTECs). However, human cell culture models to assess CD46 function on RPTECs are still missing. Therefore, we here performed gene editing of RPTEC/TERT1 cells generating a monoclonal CD46-/- cell line that did not show changes of the primary cell like characteristics. In addition, factor I and CD46-mediated cleavage of C4b into soluble C4c and membrane deposited C4d was clearly reduced in the knock-out cell line as compared to the maternal cells. Thus, human CD46-/- proximal tubular epithelial cells will be of interest to dissect the roles of the epithelium and the kidney in various complement activation mediated tubulointerstitial pathologies or in studying CD46 mediated uropathogenic internalization of bacteria. In addition, this gives proof-of-principle, that telomerized cells can be used in the generation of knock-out, knock-in or any kind of reporter cell lines without losing the primary cell characteristics of the maternal cells. |
url |
https://doi.org/10.1371/journal.pone.0214514 |
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