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@ARTICLE{Girelli:901872,
author = {Girelli, Anita and Beck, Christian and Bäuerle, Famke and
Matsarskaia, Olga and Maier, Ralph and Zhang, Fajun and Wu,
Baohu and Lang, Christian and Czakkel, Orsolya and Seydel,
Tilo and Schreiber, Frank and Roosen-Runge, Felix},
title = {{M}olecular {F}lexibility of {A}ntibodies {P}reserved
{E}ven in the {D}ense {P}hase after {M}acroscopic {P}hase
{S}eparation},
journal = {Molecular pharmaceutics},
volume = {18},
number = {11},
issn = {1543-8392},
address = {Washington, DC},
publisher = {American Chemical Society},
reportid = {FZJ-2021-03880},
pages = {4162–4169},
year = {2021},
abstract = {Antibody therapies are typically based on
high-concentration formulations that need to be administered
subcutaneously. These conditions induce several challenges,
inter alia a viscosity suitable for injection, sufficient
solution stability, and preservation of molecular function.
To obtain systematic insights into the molecular factors, we
study the dynamics on the molecular level under strongly
varying solution conditions. In particular, we use solutions
of antibodies with poly(ethylene glycol), in which simple
cooling from room temperature to freezing temperatures
induces a transition from a well-dispersed solution into a
phase-separated and macroscopically arrested system. Using
quasi-elastic neutron scattering during in situ cooling
ramps and in prethermalized measurements, we observe a
strong decrease in antibody diffusion, while internal
flexibility persists to a significant degree, thus ensuring
the movement necessary for the preservation of molecular
function. These results are relevant for a more dynamic
understanding of antibodies in high-concentration
formulations, which affects the formation of transient
clusters governing the solution viscosity.},
cin = {JCNS-4 / JCNS-1 / JCNS-FRM-II / MLZ},
ddc = {610},
cid = {I:(DE-Juel1)JCNS-4-20201012 / I:(DE-Juel1)JCNS-1-20110106 /
I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
(POF4-6G4) / 632 - Materials – Quantum, Complex and
Functional Materials (POF4-632)},
pid = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
experiment = {EXP:(DE-MLZ)KWS2-20140101 / EXP:(DE-MLZ)KWS3-20140101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:34637319},
UT = {WOS:000715212700020},
doi = {10.1021/acs.molpharmaceut.1c00555},
url = {https://juser.fz-juelich.de/record/901872},
}