Antileukemic and Immunosuppressive Activity of 2-chloro-2'-deoxyadenosine
Overview
Authors
Affiliations
The adenosine deaminase-resistant purine deoxynucleoside 2-chloro-2'-deoxyadenosine (CdA) is markedly toxic in vitro to nondividing and proliferating normal human lymphocytes and to many leukemia cell specimens. The CdA is also effective against mouse L1210 leukemia in vivo. The present investigations have examined the pharmacology, chemotherapeutic activity, and toxicity of CdA in nine patients with advanced hematologic malignancies refractory to conventional therapy. When administered by continuous intravenous infusion, the deoxyadenosine analog was well tolerated. As monitored by radioimmunoassay, plasma CdA levels rose gradually during the infusions. The CdA was not deaminated significantly. In all patients with leukemia, the CdA lowered the blast count by at least 50%. In one patient with a T-cell leukemia-lymphoma, and in another patient with chronic myelogenous leukemia in blast crisis, the CdA infusion eliminated all detectable blasts from the blood and bone marrow. In a patient with a diffuse lymphoma complicated by severe autoimmune hemolytic anemia, CdA treatment quickly terminated the hemolytic process. Bone marrow suppression represented the dose-limiting toxicity, and was related to plasma CdA levels, cumulative drug dosage, and the rapid release of CdA that accompanied tumor cell lysis.
2'-Fluorinated nucleoside chemistry for new drug discovery: achievements and prospects.
Meng Y, Sun N, Liang L, Yu B, Chang J Natl Sci Rev. 2024; 11(10):nwae331.
PMID: 39526027 PMC: 11546638. DOI: 10.1093/nsr/nwae331.
Ali S, Raj R, Kaur T, Weadick B, Nayak D, No M Cancers (Basel). 2022; 14(13).
PMID: 35804885 PMC: 9264962. DOI: 10.3390/cancers14133113.
A Novel One-Pot Enzyme Cascade for the Biosynthesis of Cladribine Triphosphate.
Frisch J, Marsic T, Loderer C Biomolecules. 2021; 11(3).
PMID: 33668847 PMC: 7996316. DOI: 10.3390/biom11030346.
Cladribine repurposed in multiple sclerosis: making a fortune out of a generic drug.
Buiter H, Derijks L, Mulder C Eur J Hosp Pharm. 2019; 26(5):246-247.
PMID: 31656609 PMC: 6788269. DOI: 10.1136/ejhpharm-2019-002026.
Ceesay M, Basu T, du Vivier A, Mufti G BMJ Case Rep. 2019; 12(10).
PMID: 31645386 PMC: 6827816. DOI: 10.1136/bcr-2019-232480.