抑制LDT10和LDT119的活性,新和卡达诺尔,对Trypanosoma cruzi进行抑制
Renato Granado1,2, Brenda de Lucena Costa3, Cleonice Andrade Holanda3
1Laboratório de Ultraestrutura Celular Hertha Meyer, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Centro de Ciências da Saúde, Bloco G, Ilha do Fundão, Rio de Janeiro 21941-900, RJ, Brazil.
Pharmaceuticals (Basel, Switzerland)
|January 28, 2026
概括
两种新型卡达诺基衍生的脂类比物LDT10和LDT119,对夏加斯病的所有阶段 (由Trypanosoma cruzi引起) 具有强烈的活性,具有低毒性. 这些化合物来源于果仁贝液体,代表了新的查加斯病治疗的有希望的候选人.
科学领域:
- 药用化学 医学化学
- 寄生虫学的寄生虫学
- 药物发现 药物发现 药物发现
背景情况:
- 查加斯病是由Trypanosoma cruzi引起的,是一种被忽视的热带疾病,具有有限的,有毒的治疗选择.
- 目前的治疗方法,如本兹尼达和尼福蒂莫克斯,在慢性感染中降低了疗效.
- 对于新型,安全和有效的化疗剂有极大需求.
研究的目的:
- 评估新型卡达诺基衍生的脂类比物LDT10和LDT119,作为潜在的查加斯病治疗药物.
- 评估它们的in silico药理动力学特性,体外抗寄生虫活性和细胞毒性.
- 研究它们对Trypanosoma cruzi的所有发育形式的形态和超结构影响.
主要方法:
- 在中预测ADMET (SwissADME,pkCSM) 用于制药动力学和毒性分析.
- 在体外抗增殖试验对表皮性质,三型性质和细胞内表皮性质进行抗增殖试验.
- 在HEPG2和HFF-1细胞中进行细胞毒性评估;通过SEM和TEM进行形态/超结构分析;量化ROS生成.
主要成果:
- 在基分析预测了有利的类似药物的特性,高吸收率,并且没有变异性/肝毒性.
- LDT10和LDT119证明了所有T. cruzi形式的强烈抑制 (IC50/LD50在低μM到亚μM范围内),对哺乳动物细胞的细胞毒性最小.
- 形态学研究发现了显著的细胞损伤,包括膜破坏和器官组织失调,与破坏的脂生物合成相一致.
结论:
- LDT10和LDT119在体外表现出强大且有选择性的活性,对抗T. cruzi.的所有发育阶段.
- 这些CNSL衍生类型具有有利的药理动力学预测和低的哺乳动物细胞毒性.
- 它们代表了查加斯病化疗的有希望的候选者,需要进一步的体内研究.
相关概念视频
Solution Equilibrium and Saturation
21.9K
Imagine adding a small amount of sugar to a glass of water, stirring until all the sugar has dissolved, and then adding a bit more. You can repeat this process until the sugar concentration of the solution reaches its natural limit, a limit determined primarily by the relative strengths of the solute-solute, solute-solvent, and solvent-solvent attractive forces. You can be certain that you have reached this limit because, no matter how long you stir the solution, undissolved sugar remains. The...
21.9K
Special considerations while measuring oxygen saturation
961
Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
961
Excitatory and Inhibitory Effects of Neurotransmitters
12.9K
When an action potential reaches the presynaptic axon terminal, it releases neurotransmitters from the neuron into the synaptic cleft at a chemical synapse. The released neurotransmitter can be excitatory or inhibitory. The critical criteria commonly used to determine whether a molecule is a neurotransmitter at a chemical synapse are the molecule's presence in the presynaptic neuron. Second, its release is in response to strong presynaptic depolarization. And lastly, the presence of...
12.9K
Co-activators and Co-repressors
8.6K
Gene transcription is regulated by the synergistic action of several proteins that form a complex at a gene regulatory site. This is observed in eukaryotes, where the regulation of gene expression is a complex process. Regulatory proteins in eukaryotes can broadly be classified into two types – regulators that bind directly to specific DNA sequences and co-regulators that associate with regulatory proteins but cannot directly bind to the DNA. These co-regulators are further divided into...
8.6K
tRNA Activation
22.9K
Aminoacyl-tRNA synthetases are present in both eukaryotes and bacteria. Though eukaryotes have 20 different aminoacyl-tRNA synthetases to couple to 20 amino acids, many bacteria do not have genes for all of these aminoacyl-tRNA synthetases. Despite this, they still use all 20 amino acids to synthesize their proteins. For instance, some bacteria do not have the gene encoding the enzyme that couples glutamine with its partner tRNA. In these organisms, one enzyme adds glutamic acid to all of the...
22.9K
Activation Energy
86.6K
Activation energy is the minimum amount of energy necessary for a chemical reaction to move forward. The higher the activation energy, the slower the rate of the reaction. However, adding heat to the reaction will increase the rate, since it causes molecules to move faster and increase the likelihood that molecules will collide. The collision and breaking of bonds represents the uphill phase of a reaction and generates the transition state. The transition state is an unstable high-energy state...
86.6K


