The main drawback of the anticancer chemotherapy consists in the lack of drug selectivity causing severe side effects. The targeted drug delivery appears to be a very promising strategy for controlling the biodistribution of the cytotoxic agent only on malignant tissues by linking it to tumor-targeting moiety. Here we exploit the natural characteristics of Shiga toxin B sub-unit (STxB) as targeting
[EN] CLEAVABLE TETRAZINE USED IN BIO-ORTHOGONAL DRUG ACTIVATION<br/>[FR] TÉTRAZINE CLIVABLE UTILISÉE DANS L'ACTIVATION DE MÉDICAMENTS BIO-ORTHOGONAUX
申请人:TAGWORKS PHARMACEUTICALS B V
公开号:WO2018004338A1
公开(公告)日:2018-01-04
Disclosed is an advancement in provoked chemical cleavage. Thereby the invention provides the use of a diene as a chemically cleavable group attached to a Construct, and the use of a dienophile to provoke the release of the Construct by allowing the diene to react with a dienophile capable of undergoing an inverse electron demand Diels Alder reaction with the diene. The invention includes a kit for releasing a Construct CA bound to a Trigger TR, the kit comprising a tetrazine and a dienophile, wherein the Trigger is the tetrazine. The invention also includes the use of the formation of a pyridazine by reacting a tetrazine comprising a Construct CA bound thereto and a dienophile, as a chemical tool for the release, in a chemical, biological or physiological environment, of said Construct.
A Cascade Biodegradable Polymer Based on Alternating Cyclization and Elimination Reactions
作者:Matthew A. DeWit、Elizabeth R. Gillies
DOI:10.1021/ja905343x
日期:2009.12.30
Polymers that depolymerize by a cascade of intramolecular reactions in response to the removal of a stabilizing end-cap can allow for an unprecedented degree of control over the polymer degradation process. Described here is the development of polymers comprising N,N'-dimethylethylenediamine and 4-hydroxybenzyl alcohol linked by carbamate linkages. The polycarbamate backbone is stable in aqueous solution
The present invention provides pharmacological compounds including an effector moiety conjugated to a binding moiety that directs the effector moiety to a biological target of interest. Likewise, the present invention provides compositions, kits, and methods (e.g., therapeutic, diagnostic, and imaging) including the compounds. The compounds can be described as a protein interacting binding moiety-drug conjugate (SDC-TRAP) compounds, which include a protein interacting binding moiety and an effector moiety. For example, in certain embodiments directed to treating cancer, the SDC-TRAP can include an Hsp90 inhibitor conjugated to a cytotoxic agent as the effector moiety.
Bioorthogonal decaging chemistry with both fast kinetics and high efficiency is highly demanded for in vivo applications but remains very sporadic. Herein, we describe a new bioorthogonal decaging chemistry between N-oxide and silylborane. A simple replacement of “C” in boronic acid with “Si” was able to substantially accelerate the N-oxide decaging kinetics by 106 fold (k2: up to 103 M–1 s–1). Moreover
体内应用非常需要具有快速动力学和高效率的生物正交解腐化学,但仍然非常零星。在此,我们描述了N-氧化物和甲硅烷基硼烷之间的一种新的生物正交解腐化学。用“Si”简单替换硼酸中的“C”能够将N-氧化物脱腐动力学显着加速10 6倍( k 2 :高达10 3 M –1 s –1 )。此外,还开发了一种新的N-氧化物掩蔽自焚间隔物,用于在与甲硅烷基硼烷点击时无痕释放各种有效负载,具有快速动力学和高效率(> 90%)。令人印象深刻的是,在4T1小鼠乳腺肿瘤模型中,与母体药物相比,这种基于N-氧化物的自组装生物正交纳米前药与甲硅烷基硼烷的组合显着增强了肿瘤抑制效果。总的来说,这种新的生物正交点击释放化学具有快速动力学和高效率的特点,被认为在化学生物学和药物输送领域有广泛的应用。