摘要：In this study,we designed and synthesized a series of phthalazinone acridine derivatives as dual PARP and Topo *** assays indicated that most of the compounds significantly inhibited multiple cancer cells *** addition,all the compounds displayed Topo Ⅱ inhibition activity at 10 mol/L,and also possessed good PARP-1 inhibitory *** mechanistic studies showed that compound 9 a induced remarkable apoptosis and caused prominent S cell cycle arrest in HCT116 *** study suggested that 9 a inhibiting Topo and PARP concurrently can be a potential lead compound for cancer therapy.

摘要：The dysregulation of pathways regulat-ing cellular function is a frequent hall-mark of cancer and the development of specific pathway inhibitors that alter tumor growth and progression are the focus of multiple recent studies. E3 ubiquitin ligases are a large group of diverse protein enzymes that specifically target proteins for dear- ance, and their importance to normal cel-lular function is illustrated in the many diseases associated with their loss of func- tion or inappropriate targeting. S-phase kinase-associated protein 2 （Skp2） is an F box protein that plays critical roles in cell-cycle progression, senescence, metabolism, and acts as an Skpl-Cullin-l-F box （SCF） ubiquitin ligase substrate recognition fac-tor. Overexpression of Skp2 is associated with poor prognosis and metastasis in many cancers and is a well validated drug target. In a recent report, Chart et al. have iden-tified an Skp2 inhibitor that selectively impairs Skp2 E3 ligase activity using an integrated virtual high-throughput drug screening and experimental validation approach. This Skp2 inhibitor restricts cancer stemness and potentiates sensitivity to chemotherapeutic agents in multiple ani-mal tumor models. These findings identify a new novel small molecule that targets the Skp2 and reduces tumor growth by attenu-ating aerobic glycolysis and inducing cel-lular senescence.

摘要：Cisplatin is one of the most successful antitumor agents, yet also restricted by its poor cellular uptake and low selectivity. Since 3-(2-nitrophenyl) propionic acid(NPPA) has been reported as a bioreductive prodrug moiety, herein we combined NPPA with cisplatin(compound 1) to improve its lipophilicity and targetability and then to improve the antitumor outcomes. In addition, compound 2 possessing 3-phenyl propionic acid(PPA) was also synthesized as a comparison to test the influence of the NPPA to the cytotoxicity, since PPA was not a bioreductive moiety. Bioevaluations showed that 1 displayed more potent antitumor potency than cisplatin and 2, suggesting Pt(II) complexes possessing NPPA groups may be a good strategy for future platinum drug discovery.

摘要：目的构建人FKBP38 N-末端及C-末端原核表达载体并使其在大肠杆菌中高效表达,纯化基因表达产物,制备兔多克隆抗体并对该抗体用于Western免疫印迹、免疫荧光及免疫组织化学检测进行评价,为研究FKBP38的功能奠定基础。方法以人FKBP38 cDNA为模板,根据人FKBP38全长cDNA系列,设计PCR引物分别扩增N-末端(1-207aa)及C-末端(209-387aa),将扩增产物克隆至大肠杆菌表达载体pGEX-6P1中,经BamH I/Sal I双酶切鉴定。GST-FKBP38-N及GST-FKBP38-C融合蛋白在硫代半乳糖苷(IPTG)诱导下在大肠杆菌BL21中得到表达。利用谷胱甘肽亲和层析纯化融合蛋白,用纯化的GST-FKBP38-N融合蛋白及GST-FKBP38-C融合蛋白免疫家兔制备多克隆抗体并进行纯化。使用纯化的抗FKBP38多抗以Western免疫印迹、免疫荧光及免疫组织化学检测FKBP38的表达与细胞内的定位。结果成功构建FKBP38 N-末端及C-末端原核表达载体,表达并纯化了GST-FKBP38-N融合蛋白及GST-FKBP38-C融合蛋白,制备并纯化了FKBP38特异性抗体。该抗体用于Western免疫印迹检测FKBP38在不同细胞株中的表达,特异性强、效价高;用于免疫荧光检测FKBP38在细胞内主要定位于线粒体上;用于免疫组织化学检测FKBP38在乳腺组织细胞呈现胞浆阳性。结论 FKBP38特异性抗体制备成功,该抗体可用于FKBP38的免疫印迹、免疫荧光及免疫组织化学检测,为深入研究FKBP38的功能奠定基础。

摘要：目的探讨蛋白激酶D3(protein kinaseD3,PKD3)是否会影响依托泊甙对激素抵抗性前列腺癌(hormonal refractory prostate cancer,HRPC)的生长抑制。方法在HRPC细胞系DU-145中瞬时转染PKD3的siRNA,Western blot检测细胞中内源性PKD3的表达变化;siRNA转染48h后,分别以0、30、70、100、300μmol/L的依托泊甙处理对照siRNA、siRNA-PKD3-1、siRNA-PKD3-2转染的DU-145细胞24h,并以细胞活力测定观察敲定内源性PKD3的表达有无影响依托泊甙对DU-145的生长抑制;利用PKC单一抑制剂、PKC-PKD双重抑制剂处理DU-145细胞,以观察二者是否增强DU-145对依托泊甙的敏感性。结果 Westernblot证实siRNA-PKD3的转染敲低DU-145细胞内源性PKD3的表达;细胞活力测定表明,在非特异性siRNA(si-CTL)转染的DU-145细胞中,依托泊甙剂量依赖地抑制DU-145细胞的生长,而敲低PKD3的表达不仅可显著抑制DU-145的生长(P<0.01),还可显著增强依托泊甙对DU-145生长的抑制(P<0.01);Go6976(PKC-PKD的双重抑制剂)可明显抑制前列腺癌DU-145细胞生长(P<0.01),而Go6983(单一的PKC抑制剂)则仅对DU-145的生长起微弱抑制作用。结论 PKD3的表达和活性可增强前列腺癌DU-145细胞对依托泊甙的敏感性,提示可作为抗前列腺癌药物设计的潜在靶点之一。

摘要：磷作为一切生物体的必需元素,参与了包括生命体能量代谢、结构调控、遗传信息传递等在内的必要过程,其重要性不言而喻。然而,在国内基础学科教学过程中,基于酶促反应的调控机制和反应机理被拆分到众多生化专业相关的课程中,并未能得到系统性的剖析与讲解。本文从基础磷酸酯和磷酸酐的化学结构及反应特性入手,分别讨论了生物体中磷酸酯相关的调控酶类,并对最重要的一类磷酸酐——三磷酸腺苷在生物体内的转化关系做了系统性的讲解及分析。作为对磷元素相关的生命化学过程的梳理归纳,希望对化学及生命科学的教学与科研实验设计有所助益。

摘要：As we navigate the transition from the Fourth to the Fifth Industrial Revolution,the emerging fields of biomanufacturing and biofabrication are transforming life sciences and *** sectors are benefiting from a synergy of synthetic and engineering biology,sustainable manufacturing,and integrated design *** techniques such as 3D bioprinting,tissue engineering,directed assembly,and self-assembly are instrumental in creating biomimetic scaffolds,tissues,organoids,medical devices,and biohybrid *** field of biofabrication in the United Kingdom and Ireland is emerging as a pivotal force in bioscience and healthcare,propelled by cutting-edge research and *** on the production of biologically functional products for use in drug delivery,in vitro models,and tissue engineering,research institutions across these regions are dedicated to innovating healthcare solutions that adhere to ethical standards while prioritising sustainability,affordability,and healthcare system benefits.