1353003-45-8Relevant articles and documents
Linker Hydrophilicity Modulates the Anticancer Activity of RGD–Cryptophycin Conjugates
Anselmi, Michele,Borbély, Adina,Figueras, Eduard,Michalek, Carmela,Kemker, Isabell,Gentilucci, Luca,Sewald, Norbert
, p. 1015 - 1022 (2020/12/11)
Most anticancer agents are hydrophobic and can easily penetrate the tumor cell membrane by passive diffusion. This may impede the development of highly effective and tumor-selective treatment options. A hydrophilic β-glucuronidase-cleavable linker was used to connect the highly potent antimitotic agent cryptophycin-55 glycinate with the αvβ3 integrin ligand c(RGDfK). Incorporation of the self-immolative linker containing glucuronic acid results in lower cytotoxicity than that of the free payload, suggesting that hydrophilic sugar linkers can preclude passive cellular uptake. In vitro drug-release studies and cytotoxicity assays demonstrated the potential of this small molecule–drug conjugate, providing guidance for the development of therapeutics containing hydrophobic anticancer drugs.
Antineoplastic agents. 600. from the south pacific ocean to the silstatins
Pettit, George R.,Arce, Pablo M.,Chapuis, Jean-Charles,Macdonald, Christian B.
, p. 510 - 523 (2015/04/14)
The recent advances in the development of antibody and other drug conjugates for targeted cancer treatment have further increased the need for powerful cancer cell growth inhibitors. Toward that objective we have extended our earlier discovery of the remarkable anticancer bacillistatins 1 and 2 from Bacillus silvestris to SAR and other structural modifications such as availability of a free hydroxy group for antibody-drug conjugate (ADC) and other prodrug linkage. That direction has resulted in seven structural modifications designated silstatins 1-8 (7a, 8a, 8b, 14a, 15a, 15b, 18a, and 18b), where the exceptional cancer cell growth inhibition of some of them are in the range GI50 10-3-10-4 μM/mL. Silstatin 7 (18a) was converted to a glucuronic conjugate (28) that displayed an impressive reduction in toxicity during transport.