Nuclear targeting tags having a phenylboronate targeting moiety, a linker, a chemically linkable end group suitable for linking the targeting moiety to a molecule of interest, and optionally a spacer between the linker and chemically linkable end group. Also provided are compounds including the nuclear targeting tag covalently bonded to a molecule of interest, such as a drug, probe, dye, peptide, protein, drug candidate, or natural product. Also provided are methods of introducing a molecule of interest into a nucleus of a cell using the nuclear targeting tag. Also provided are methods for preparing the nuclear targeting tags.
broad use to direct drug release at a particular target disease area. Increased levels of reactive oxygen species (ROS) have been associated with the development and progression of cancer and several other disease states, motivating the development of drug conjugates that can undergo a chemoselective ROS-triggered release. Melatonin (MLT) and the reactive electrophile p-benzoquinone methide ( p-QM) have
[EN] 3' PROTECTED NUCLEOTIDES<br/>[FR] NUCLÉOTIDES PROTÉGÉS EN 3'
申请人:ROCHE DIAGNOSTICS GMBH
公开号:WO2020131759A1
公开(公告)日:2020-06-25
The present disclosure provides 3' protected nucleotides, including those 3' protected nucleotides having a detectable tag. Systems and methods of sequencing nucleic acids using the 3' protected nucleotides are also disclosed, such as the sequencing of a nucleic acid using a nanopore or the sequencing of a nucleic acid via sequencing-by-synthesis.
in the treatment of pancreatic ductal adenocarcinoma and focused on the difference of hydrogenperoxide levels in normal versus cancer cells. We designed and synthesized a novel boronate‐ester‐caged prodrug that is activated by the high H2O2 concentrations found in cancer cells to release GEM. An H2O2‐activatable GEM (A‐GEM) has higher selectivity for H2O2 over other reactive oxygen species (ROS) and
使用抗癌化学治疗药物的主要问题是宿主毒性。由于不良反应,患者需要中断或改变化疗。在这项研究中,我们旨在减少吉西他滨(GEM)在胰腺导管腺癌治疗中的不良事件,并着眼于正常细胞与癌细胞中过氧化氢水平的差异。我们设计并合成了一种新型的硼酸酯笼蔽前药,该药被癌细胞中发现的高H 2 O 2浓度激活以释放GEM。H 2 O 2可活化GEM(A‐GEM)对H 2 O 2的选择性比其他活性氧(ROS)高,并且具有相应于H 2的细胞毒性作用体外O 2浓度。免疫缺陷小鼠的异种移植模型表明,体内给药时,A‐GEM的作用并不逊于GEM。尤其是,与GEM治疗后相比,A‐GEM治疗后骨髓抑制显着降低。
Hydrogen peroxide-triggered gene silencing in mammalian cells through boronated antisense oligonucleotides
Hydrogenperoxide (H2O2) is a reactive oxygen species (ROS) involved in various diseases, including neurodegeneration, diabetes, and cancer. Here, we introduce a new approach to use H2O2 to modulate specific geneexpression in mammaliancells. H2O2-responsive nucleoside analogues, in which the Watson–Crick faces of the nucleobases are caged by arylboronate moieties, were synthesized. One of these analogues
过氧化氢 (H 2 O 2 ) 是一种活性氧 (ROS),与多种疾病有关,包括神经退行性疾病、糖尿病和癌症。在这里,我们介绍了一种使用 H 2 O 2调节哺乳动物细胞中特定基因表达的新方法。合成了H 2 O 2响应性核苷类似物,其中核碱基的 Watson-Crick 面被芳基硼酸酯部分笼住。使用自动化 DNA 合成仪将其中一种类似物硼化胸苷 ( dTB ) 掺入寡脱氧核苷酸 (ODN) 中。添加 H 2 O 2后,该硼化 ODN 与互补 RNA 的杂交能力明显从关闭到开启方向切换。此外,我们使用dTB修饰的反义寡核苷酸 (ASO) 证明了 H 2 O 2在哺乳动物细胞中触发基因沉默。我们的方法可用于通过硼化 ASO 的序列设计来调节任何感兴趣的基因,并将有助于靶向疾病疗法的开发。