The most common procedure to reveal the location of specific (sub)cellular elements in biological samples is via immunostaining followed by optical imaging. This is typically performed with target-specific primary antibodies (1.Abs), which are revealed by fluorophore-conjugated secondary antibodies (2.Abs). However, at high resolution this methodology can induce a series of artifacts due to the large size of antibodies, their bivalency, and their polyclonality. Here we use STED and DNA-PAINT super-resolution microscopy or light sheet microscopy on cleared tissue to show how monovalent secondary reagents based on camelid single-domain antibodies (nanobodies; 2.Nbs) attenuate these artifacts. We demonstrate that monovalent 2.Nbs have four additional advantages: 1) they increase localization accuracy with respect to 2.Abs; 2) they allow direct pre-mixing with 1.Abs before staining, reducing experimental time, and enabling the use of multiple 1.Abs from the same species; 3) they penetrate thick tissues efficiently; and 4) they avoid the artificial clustering seen with 2.Abs both in live and in poorly fixed samples. Altogether, this suggests that 2.Nbs are a valuable alternative to 2.Abs, especially when super-resolution imaging or staining of thick tissue samples are involved.
:C$\backslash$:/Users/Karoline/AppData/Local/Mendeley Ltd./Mendeley Desktop/Downloaded/Sograte-Idrissi et al. - Unknown - Circumvention of common labeling artifacts using secondary nanobodies.pdf:pdf
%0 Journal Article
%1 Sograte-Idrissi2019
%A Sograte-Idrissi, Shama
%A Schlichthaerle, Thomas
%A Duque-Afonso, Carlos J.
%A Alevra, Mihai
%A Strauss, Sebastian
%A Moser, Tobias
%A Jungmann, Ralf
%A Rizzoli, Silvio
%A Opazo, Felipe
%D 2019
%J bioRxiv
%K antibodies dna-paint fluorescence immunostaining microscopy nanobodies
%P 818351
%R 10.1101/818351
%T Circumvention of common labeling artifacts using secondary nanobodies
%U http://dx.doi.org/10.1101/818351
%X The most common procedure to reveal the location of specific (sub)cellular elements in biological samples is via immunostaining followed by optical imaging. This is typically performed with target-specific primary antibodies (1.Abs), which are revealed by fluorophore-conjugated secondary antibodies (2.Abs). However, at high resolution this methodology can induce a series of artifacts due to the large size of antibodies, their bivalency, and their polyclonality. Here we use STED and DNA-PAINT super-resolution microscopy or light sheet microscopy on cleared tissue to show how monovalent secondary reagents based on camelid single-domain antibodies (nanobodies; 2.Nbs) attenuate these artifacts. We demonstrate that monovalent 2.Nbs have four additional advantages: 1) they increase localization accuracy with respect to 2.Abs; 2) they allow direct pre-mixing with 1.Abs before staining, reducing experimental time, and enabling the use of multiple 1.Abs from the same species; 3) they penetrate thick tissues efficiently; and 4) they avoid the artificial clustering seen with 2.Abs both in live and in poorly fixed samples. Altogether, this suggests that 2.Nbs are a valuable alternative to 2.Abs, especially when super-resolution imaging or staining of thick tissue samples are involved.
@article{Sograte-Idrissi2019,
abstract = {The most common procedure to reveal the location of specific (sub)cellular elements in biological samples is via immunostaining followed by optical imaging. This is typically performed with target-specific primary antibodies (1.Abs), which are revealed by fluorophore-conjugated secondary antibodies (2.Abs). However, at high resolution this methodology can induce a series of artifacts due to the large size of antibodies, their bivalency, and their polyclonality. Here we use STED and DNA-PAINT super-resolution microscopy or light sheet microscopy on cleared tissue to show how monovalent secondary reagents based on camelid single-domain antibodies (nanobodies; 2.Nbs) attenuate these artifacts. We demonstrate that monovalent 2.Nbs have four additional advantages: 1) they increase localization accuracy with respect to 2.Abs; 2) they allow direct pre-mixing with 1.Abs before staining, reducing experimental time, and enabling the use of multiple 1.Abs from the same species; 3) they penetrate thick tissues efficiently; and 4) they avoid the artificial clustering seen with 2.Abs both in live and in poorly fixed samples. Altogether, this suggests that 2.Nbs are a valuable alternative to 2.Abs, especially when super-resolution imaging or staining of thick tissue samples are involved.},
added-at = {2020-03-23T21:12:34.000+0100},
author = {Sograte-Idrissi, Shama and Schlichthaerle, Thomas and Duque-Afonso, Carlos J. and Alevra, Mihai and Strauss, Sebastian and Moser, Tobias and Jungmann, Ralf and Rizzoli, Silvio and Opazo, Felipe},
biburl = {https://www.bibsonomy.org/bibtex/2e354f8ebbf546ccb051d2cdcd9fd09f5/kfriedl},
doi = {10.1101/818351},
file = {:C$\backslash$:/Users/Karoline/AppData/Local/Mendeley Ltd./Mendeley Desktop/Downloaded/Sograte-Idrissi et al. - Unknown - Circumvention of common labeling artifacts using secondary nanobodies.pdf:pdf},
interhash = {6ae851f2f7fc3b4152790f3758a21cd0},
intrahash = {e354f8ebbf546ccb051d2cdcd9fd09f5},
journal = {bioRxiv},
keywords = {antibodies dna-paint fluorescence immunostaining microscopy nanobodies},
pages = 818351,
timestamp = {2020-03-23T22:07:40.000+0100},
title = {{Circumvention of common labeling artifacts using secondary nanobodies}},
url = {http://dx.doi.org/10.1101/818351},
year = 2019
}