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相关概念视频

Cell Potential and Free Energy02:58

Cell Potential and Free Energy

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Thermodynamics of a Redox Reaction
Thermodynamics is the branch of physics dealing with the relationship between heat and other forms of energy. In an electrochemical cell, chemical energy is converted into electrical energy.
Thus, a link can be predicted between cell potential, free energy change, and the equilibrium constant for the reaction. Cell potential can also be measured as the oxidant or the reducing strength, and similar acid-base strength measures are reflected in equilibrium...
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Thermodynamics: Chemical Potential and Activity01:10

Thermodynamics: Chemical Potential and Activity

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The effective concentration of a species in a solution can be expressed precisely in terms of its activity. Activity considers the effect of electrolytes present in the vicinity of the species of interest and depends on the ionic strength of the solution. The activity of a species is expressed as the product of molar concentration and the activity coefficient of the species.
The thermodynamic equilibrium constant is more accurately defined in terms of activity rather than concentration.
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Temperature Dependence on Reaction Rate02:55

Temperature Dependence on Reaction Rate

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The Collision Theory
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
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Standard Electrode Potentials03:02

Standard Electrode Potentials

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On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
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Frequency-dependent Selection01:21

Frequency-dependent Selection

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When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
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Potential Energy00:52

Potential Energy

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The energy stored by a structure and location of matter in space is called potential energy. For instance, raising a kettlebell changes its spatial location and increases its potential energy. Similarly, a stretched rubber band contains potential energy which, under certain conditions, can be converted into other forms of energy, such as kinetic energy.
Chemical bonds that form attractive forces between atoms also contain potential energy, called chemical energy. When a chemical reaction...
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相关实验视频

Updated: Jan 26, 2026

Generation of Natural Killer Cells from Human Expanded Potential Stem Cells
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Generation of Natural Killer Cells from Human Expanded Potential Stem Cells

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VPS34-IN1增强了人类CAL-1细胞中的STING-依赖激活.

Paulo Antas1, Mariana D Machado1, Fátima Leite-Pinheiro1,2

  • 1Institute of Biomedicine (iBiMED), Department of Medical Sciences, University of Aveiro, 3810-193, Aveiro, Portugal.

Cellular & molecular biology letters
|January 24, 2026
PubMed
概括

VPS34-IN1对癌细胞的影响很小,但抑制了Toll-like受体7信号传递. 这种化合物激活STING,增强I型干扰素的产生,以获得潜在的抗瘤免疫力.

关键词:
BPDCN BPDCN 在线播放在 CL307 中,化疗 化疗是一种化学疗法.免疫治疗是一种免疫疗法.在PtdIns 3-激酶中.刺痛是一种刺痛.这是一种I型干扰子.

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Generation of Human CD40-activated B cells
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Tyramide Signal Amplification for the Immunofluorescent Staining of ZBP1-Dependent Phosphorylation of RIPK3 and MLKL After HSV-1 Infection in Human Cells
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Tyramide Signal Amplification for the Immunofluorescent Staining of ZBP1-Dependent Phosphorylation of RIPK3 and MLKL After HSV-1 Infection in Human Cells

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相关实验视频

Last Updated: Jan 26, 2026

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Generation of Human CD40-activated B cells
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Tyramide Signal Amplification for the Immunofluorescent Staining of ZBP1-Dependent Phosphorylation of RIPK3 and MLKL After HSV-1 Infection in Human Cells
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科学领域:

  • 免疫学 免疫学 免疫学
  • 细胞生物学 细胞生物学
  • 药理学 药理学是指药理学的学科.

背景情况:

  • 真空蛋白排序34 (VPS34) 是一种涉及内体动态的激酶.
  • 作为癌症治疗方法,VPS34抑制正在探索中.
  • 囊性血细胞状树突细胞瘤 (BPDCN) 是一种罕见的血液性恶性瘤.

研究的目的:

  • 为了研究VPS34-IN1对BPDCN细胞的影响.
  • 评估VPS34-IN1对托尔类受体 (TLR) 和干扰素基因刺激器 (STING) 信号通路的影响.

主要方法:

  • 使用VPS34-IN1.1.对BPDCN CAL-1细胞进行治疗.
  • 对TLR7信号抑制的分析.
  • 评估STING通路的激活和I型干扰素 (IFN) 的产生.

主要成果:

  • VPS34-IN1对BPDCN CAL-1细胞的细胞毒性影响很小.
  • VPS34-IN1抑制了TLR7信号传输,但激活了STING.
  • 观察到细胞对2'3'-循环氨酸单酸-氨酸单酸 (2'3'-cGAMP) 的增强反应和I型IFN表达的增加.

结论:

  • VPS34-IN1对BPDCN细胞的直接毒性有限.
  • VPS34-IN1与STING激活协同作用,促进I型IFN的表达.
  • VPS34-IN1显示了通过I型IFN诱导增强抗瘤免疫力的潜力.