Studies on the regulation of membrane microdomains (lipid rafts) / Flot to mitogen-activated protein kinase signaling pathway and its effect on reversing multidrug resistance of hepatocellular carcinoma cells [PDF]
目的: 1.构建耐药肝癌细胞模型。 2.检测Flot下调对ERK1/2信号通路的影响,明确能否通过Flot调控ERK1/2信号通路从而实现肝癌细胞耐药性的逆转。 3.检测脂筏破坏剂甲基-β-环糊精破坏脂筏结构对ERK1/2的影响,探索脂筏与ERK1/2之间的关联。 4.检测下调Flot对耐药肝癌细胞侵袭能力的影响。 5.构建过表达质粒Flot1/pcDNA3.1(+)、Flot2/pcDNA3.1(+),为后续研究工作奠定基础。 方法: 1.用阿霉素大剂量冲击法诱导细胞,Celltiter ...
王亚丽
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Advances in Elemene Nanodelivery Systems: From Material Design to Disease Treatment
ABSTRACT Elemene (ELE) is a bioactive sesquiterpenoid extracted from traditional Chinese herbs, demonstrating broad‐spectrum antitumor, anti‐inflammatory, and analgesic properties with significant therapeutic potential. However, its clinical utility is constrained by inherent physicochemical limitations, including volatility and hydrophobicity, which ...
Xiao Wang +9 more
wiley +1 more source
Involvement of Abnormal MicroRNA Expression in the Mechanism of Drug Resistance with Acute Myeloid Leukemia [PDF]
目的:分析miRNA-98的表达异常在急性髓系白血病化疗耐药机制的作用,通过靶向过表达miRNA-98的表达水平探讨以miRNA-98为靶点增加化疗药物敏感性的可能性并分析其可能作用的机制。评价异常表达的血清miRNA-155是否可作为急性髓系白血病的预后标志。 方法:离体实验中,采用qRT-PCR方法检测K562和其耐药株K562/A02中miR-98、E2F1基因表达情况。通过瞬时转染miR-98mimic处理耐药细胞K562/A0248h后,通过qRT-PCR法检测miR-98表达情况;通过qRT-
黄英丹
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Recent Progress in the Development of Metal‐Based Radiosensitizations for Cancer Therapy: A Review
ABSTRACT Radiotherapy (RT) remains an indispensable means in cancer treatment; however, its therapeutic efficacy is often limited by tumor radioresistance and side effect of damage to healthy tissue. The advances in nanotechnology have propelled metal radiosensitizers to forefront of precision medicine.
Xiao‐Xia Wu +12 more
wiley +1 more source
Total Synthesis of Hapalosin and Its Analogues:Construction of Three Small Hapalosin C-9 Analogues Libraries and Studies on Total Synthesis of Melleumins A and B [PDF]
环肽类化合物是一类结构复杂多样的天然产物。自然界中存在大量的环肽类化合物,表现出多种生物活性,如杀虫、抗菌、抗肿瘤、抗病毒、和免疫抑制等。环肽类化合物作为富有实用前景的先导化合物在药物发现中受到越来越多的关注,新的活性天然产物也不断被发现。同时,环肽类天然产物的全合成也成为不对称合成的新热点。Hapalosin(1a)是1994年从蓝藻中分离提取的一类新型结构的环肽化合物,因其对肿瘤细胞的多药耐药性细胞系有很强的抑制作用,一经发现就引起了广大合成化学家和药物化学家的关注。本论文的目标在于拓展手性合成砌块(
戴朝峰
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ABSTRACT The escalating issue of drug‐resistant pathogens, largely driven by the overuse of conventional antibiotics, has become a significant global health threat. Developing alternative therapeutic strategies and fabricating natural biological enzyme materials that mimic the high efficiency, selectivity, and mild‐operating conditions of natural ...
Shuai He +11 more
wiley +1 more source
The role of hedgehog pathway and autophagy in the mechanism of acquired chemoresistance in multiple myeloma [PDF]
在多发性骨髓瘤的临床治疗中,化疗耐药现象仍然是治疗失败的主要原因之一。为了更好地了解多发性骨髓瘤的化疗耐药性及相关的机制,我们建立了阿霉素(doxorubicin,DOX)耐药的细胞系多发性骨髓瘤细胞系RPMI8226/R(doxorubicin-resistantcellline),DOX对8226/R的半数抑制率(IC50)是对DOX敏感的细胞系RPMI8226/S(chemosensitivecellline)的5~6倍。我们发现在多发性骨髓瘤耐药性的诱导过程中存在Hedgehog(Hh ...
黄潇
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To Ban or Not to Ban: The UK's Hamlet Moment With Farm Antibiotics
ABSTRACT This article applies the Multiple Streams Framework (MSF) to examine post‐Brexit antimicrobial resistance (AMR) governance in UK agriculture, focusing on the contested regulation of prophylactic antibiotic use in farm animals. The study reveals how Brexit created a structural policy window, yet political and ideological dynamics rendered it ...
George Asiamah
wiley +1 more source
Reversal of multidrug resistance in human hepatocellular carcinoma cells by JNK [PDF]
目的:多药耐药(multidrugresistance,MDR)细胞的存在是肝癌化疗失败的重要原因。有研究表明抗肿瘤药物能引起JNK信号传导系统的变化,提示通过调节JNK有可能逆转MDR。本课题应用抗癌药物阿霉素(ADM)诱导建立人肝癌多药耐药细胞HepG2/ADM,通过增高和降低肝癌多药耐药细胞HepG2/ADM中JNK的表达,检测多药耐药细胞的耐药性的变化,初步探讨JNK是否可做为逆转肝癌多药耐药细胞靶点的依据。 方法:采用药物浓度梯度递增诱导法诱导亲本细胞建立人肝癌多药耐药细胞系HepG2/ADM,
马全明
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Background – Canine superficial bacterial folliculitis (SBF) is a common recurrent condition with a growing requirement for culture and susceptibility as a consequence of increased antimicrobial resistance and antimicrobial stewardship. Different opinions persist about the ideal technique for culture sample acquisition, which varies with lesion ...
Jason B. Pieper +3 more
wiley +1 more source

