Cryptophane-A (CryA)

Cryptophane-A is a synthetic supramolecular host molecule composed of two cyclotriveratrylene (CTV) units connected by three ethylenedioxy linkers, creating a hydrophobic cavity (Brotin & Collet, 2007). It is primarily known for its exceptional affinity for xenon atoms, making it a cornerstone in the development of hyperpolarized 129Xe NMR biosensors (Spence et al., 2001). In these applications, Cryptophane-A acts as a host that encapsulates xenon, providing a unique chemical environment that results in a distinct NMR signal (Hill et al., 2007). By functionalizing the exterior of the cryptophane cage with targeting moieties such as antibodies or peptides, researchers can create biosensors that detect specific biological markers or cell types with high sensitivity (Witte et al., 2015). While not a therapeutic target itself, Cryptophane-A is a critical tool in molecular imaging and diagnostic research, particularly for the early detection of diseases like cancer (Rose et al., 2014). Therapeutic challenges associated with its use include its inherent lipophilicity and the requirement for chemical modification to ensure sufficient water solubility and biocompatibility for in vivo applications (Berthault et al., 2009).

Other names

Cryptophane-ACryAXenon-129 NMR biosensor host1,6,11-tris(2-methoxyethoxy)-2,7,12-trimethoxy-cryptophane-A

Host-guest encapsulation of Xenon-129 for hyperpolarized NMR signal detection.