Influence of Several Compounds and Drugs on the Renal Uptake of Radiolabeled Affibody Molecules
(2020) In Molecules (Basel, Switzerland) 25(11).- Abstract
Affibody molecules are the most studied class of engineered scaffold proteins (ESPs) in radionuclide molecular imaging. Attempts to use affibody molecules directly labelled with radiometals for targeted radionuclide therapy were hampered by the high uptake and retention of radioactivity in kidneys. Several promising strategies have been implemented to circumvent this problem. Here, we investigated whether a pharmacological approach targeting different components of the reabsorption system could be used to lower the uptake of [99mTc]Tc-ZHER:2395 affibody molecule in kidneys. Pre-injection of probenecid, furosemide, mannitol or colchicine had no influence on activity uptake in kidneys compared to the control group. Mice pre-injected with... (More)
Affibody molecules are the most studied class of engineered scaffold proteins (ESPs) in radionuclide molecular imaging. Attempts to use affibody molecules directly labelled with radiometals for targeted radionuclide therapy were hampered by the high uptake and retention of radioactivity in kidneys. Several promising strategies have been implemented to circumvent this problem. Here, we investigated whether a pharmacological approach targeting different components of the reabsorption system could be used to lower the uptake of [99mTc]Tc-ZHER:2395 affibody molecule in kidneys. Pre-injection of probenecid, furosemide, mannitol or colchicine had no influence on activity uptake in kidneys compared to the control group. Mice pre-injected with maleate and fructose had 33% and 51% reduction in the kidney-associated activity, respectively, compared to the control group. Autoradiography images showed that the accumulation of activity after [99mTc]Tc-ZHER2:2395 injection was in the renal cortex and that both maleate and fructose could significantly reduce it. Results from this study demonstrate that pharmacological intervention with maleate and fructose was effective in reducing the kidney uptake of affibody molecules. A presumable mechanism is the disruption of ATP-mediated cellular uptake and endocytosis processes of affibody molecules by tubular cells.
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- author
- Garousi, Javad ; Vorobyeva, Anzhelika and Altai, Mohamed LU
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- 99mTc, affibody molecules, kidney, radiolabel, reabsorption, renal uptake
- in
- Molecules (Basel, Switzerland)
- volume
- 25
- issue
- 11
- article number
- 2673
- publisher
- MDPI AG
- external identifiers
-
- scopus:85086354739
- pmid:32526905
- ISSN
- 1420-3049
- DOI
- 10.3390/molecules25112673
- language
- English
- LU publication?
- yes
- id
- b65a15bd-17ad-4623-98c0-e88a36282f22
- date added to LUP
- 2020-07-03 09:04:09
- date last changed
- 2024-04-17 11:39:21
@article{b65a15bd-17ad-4623-98c0-e88a36282f22,
abstract = {{<p>Affibody molecules are the most studied class of engineered scaffold proteins (ESPs) in radionuclide molecular imaging. Attempts to use affibody molecules directly labelled with radiometals for targeted radionuclide therapy were hampered by the high uptake and retention of radioactivity in kidneys. Several promising strategies have been implemented to circumvent this problem. Here, we investigated whether a pharmacological approach targeting different components of the reabsorption system could be used to lower the uptake of [99mTc]Tc-ZHER:2395 affibody molecule in kidneys. Pre-injection of probenecid, furosemide, mannitol or colchicine had no influence on activity uptake in kidneys compared to the control group. Mice pre-injected with maleate and fructose had 33% and 51% reduction in the kidney-associated activity, respectively, compared to the control group. Autoradiography images showed that the accumulation of activity after [99mTc]Tc-ZHER2:2395 injection was in the renal cortex and that both maleate and fructose could significantly reduce it. Results from this study demonstrate that pharmacological intervention with maleate and fructose was effective in reducing the kidney uptake of affibody molecules. A presumable mechanism is the disruption of ATP-mediated cellular uptake and endocytosis processes of affibody molecules by tubular cells.</p>}},
author = {{Garousi, Javad and Vorobyeva, Anzhelika and Altai, Mohamed}},
issn = {{1420-3049}},
keywords = {{99mTc; affibody molecules; kidney; radiolabel; reabsorption; renal uptake}},
language = {{eng}},
number = {{11}},
publisher = {{MDPI AG}},
series = {{Molecules (Basel, Switzerland)}},
title = {{Influence of Several Compounds and Drugs on the Renal Uptake of Radiolabeled Affibody Molecules}},
url = {{http://dx.doi.org/10.3390/molecules25112673}},
doi = {{10.3390/molecules25112673}},
volume = {{25}},
year = {{2020}},
}