The bioconjugation and radiosynthesis of 89Zr-DFO-labeled antibodies

Journal of Visualized Experiments : JoVE
Brian M Zeglis, Jason S Lewis

Abstract

The exceptional affinity, specificity, and selectivity of antibodies make them extraordinarily attractive vectors for tumor-targeted PET radiopharmaceuticals. Due to their multi-day biological half-life, antibodies must be labeled with positron-emitting radionuclides with relatively long physical decay half-lives. Traditionally, the positron-emitting isotopes 124I (t1/2=4.18 d), 86Y (t1/2=14.7 hr), and 64Cu (t1/2=12.7 hr) have been used to label antibodies for PET imaging. More recently, however, the field has witnessed a dramatic increase in the use of the positron-emitting radiometal 89Zr in antibody-based PET imaging agents. 89Zr is a nearly ideal radioisotope for PET imaging with immunoconjugates, as it possesses a physical half-life (t1/2=78.4 hr) that is compatible with the in vivo pharmacokinetics of antibodies and emits a relatively low energy positron that produces high resolution images. Furthermore, antibodies can be straightforwardly labeled with 89Zr using the siderophore-derived chelator desferrioxamine (DFO). In this protocol, the prostate-specific membrane antigen targeting antibody J591 will be used as a model system to illustrate (1) the bioconjugation of the bifunctional chelator DFO-isothiocyanate to an anti...Continue Reading

Citations

Apr 21, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Anton LarenkovGalina Kodina
Jun 21, 2020·International Journal of Molecular Sciences·Joon-Kee YoonSu-Jin Lee
May 21, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Kimberly FungBrian M Zeglis
Oct 2, 2019·Frontiers in Immunology·Timothy J HenrichHenry VanBrocklin
Jul 9, 2020·Clinical Cancer Research : an Official Journal of the American Association for Cancer Research·Hallie M HintzAaron M LeBeau
Nov 13, 2020·European Journal of Nuclear Medicine and Molecular Imaging·Anchal GhaiSamuel Achilefu
Feb 9, 2019·Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine·Delphine VivierBrian M Zeglis
Jun 24, 2021·Inorganic Chemistry·Anthony W McDonaghCaterina F Ramogida
Mar 22, 2020·Bioconjugate Chemistry·Sai Kiran SharmaEric W Price
Feb 19, 2020·Molecular Pharmaceutics·Jordan M WhiteNerissa T Viola
May 24, 2019·Bioconjugate Chemistry·Rachael FayJason P Holland

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.