PMID: 8961808Sep 1, 1996Paper

Single-chain Fv radioimmunotargeting

The Quarterly Journal of Nuclear Medicine : Official Publication of the Italian Association of Nuclear Medicine (AIMN) [and] the International Association of Radiopharmacology (IAR)
J S HustonL M Weiner

Abstract

The availability of engineered antibody species has catalyzed new developments in radioimmunotargeting. This chapter summarized recent studies of single-chain Fv (sFv) proteins, which are minimal antibody binding sites engineered as single polypeptide chains. The single-chain Fv can be as small as 26 kDa monomers or may be engineered as larger fusion proteins designed to self-associate into dimeric or multimeric species. They typically exhibit rapid clearance that results in high targeting specificity within a matter of hours. We have compared different modes of administration to allow further manipulation of their biodistribution and targeting properties. Results of the present study comparing intravenous (i.v.) and intraperitoneal (i.p.) administration show comparable long-term retention in circulation, but the i.v. route showed an initially high peak blood level while i.p. injection did not. As with a single sFv dose, repeated bolus injections of sFv attained high target-to-background ratios, whereas continuous sFv infusion reached a steady state level of free sFv in blood and kidney that exceeded that in tumor xenografts. We observed improved localization of radioiodinated sFv in tumor xenografts if the radioiodine label re...Continue Reading

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.