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相关概念视频

Generalization, Discrimination, and Extinction01:24

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Generalization, discrimination, and extinction are key concepts in operant conditioning that influence how behaviors are learned and maintained.
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When a voltage is applied to a conductor, an electrical field is generated, and charges in the conductor feel the force due to the electrical field. The current density that results depends on the electrical field and the properties of the material. In some materials, including metals at a given temperature, the current density is approximately proportional to the electrical field. In these cases, the current density can be modeled as:
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When a current moves through any conductor, the conductor causes some level of difficulty for the current to flow. The measure of that difficulty is known as the resistance of the material and is represented by R. Every material has its own resistance. In the case of conductors, heat is emitted whenever a current passes through them. Resistance depends on the resistivity of the material. Resistivity is a characteristic of the material used to fabricate electrical components, whereas the...
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Hormones intricately bind to receptors on the surface or within target cells, initiating a cascade of cellular responses.
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ATP-driven pumps, also known as transport ATPases, are integral membrane proteins. They have binding sites for ATP located on the membrane's cytosolic side and the ion-conducting domain in the transmembrane region. These pumps use the free energy released from ATP hydrolysis to move the solutes across cell membranes against an electrochemical gradient.
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In circuit analysis, situations often arise where resistors are neither in series nor parallel configurations. To tackle such scenarios, three-terminal equivalent networks like the wye (Y) (Figure 1 (a)) or tee (T) and delta (Δ) (Figure 1 (b)) or pi (π) networks come into play. These networks offer versatile solutions and are frequently encountered in various applications, including three-phase electrical systems, electrical filters, and matching networks.
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相关实验视频

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Tumor Engraftment in a Xenograft Mouse Model of Human Mantle Cell Lymphoma
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在耐BCR灭绝的MYC驱动B细胞淋巴瘤中有针对性的脆弱性.

Silvia Brambillasca1, Nicara Chantal Parr2, Adriana Palmeri2

  • 1Experimental Therapeutics Program, IFOM ETS-The AIRC Institute of Molecular Oncology, Milano, Italy.

Hematological oncology
|February 11, 2026
PubMed
概括
此摘要是机器生成的。

波拉图祖马布维多丁在MYC驱动的淋巴瘤中面临挑战,原因是失去了B细胞受体 (BCR) 表达. 研究人员发现mTOR和CDK4/6抑制剂有效向这些BCR阴性攻击性B细胞淋巴瘤.

关键词:
B细胞受体 (BCR) 是一种B细胞受体.没有BCR的淋巴瘤在CDK4/6中使用.药物查是指对药物进行查.高度B细胞淋巴瘤高度B细胞淋巴瘤在mTOROR中使用mTOR.波拉图祖马布-维多丁是一种

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科学领域:

  • 在瘤学瘤学.
  • 免疫学 免疫学 免疫学
  • 药理学 药理学是指药理学的学科.

背景情况:

  • 波拉图祖马布维多丁是一种向CD79B的抗体-药物联合体 (ADC),在扩散性大B细胞淋巴瘤 (DLBCL) 和高度B细胞淋巴瘤 (HGBCL) 中表现有前途.
  • 由MYC驱动的B细胞淋巴瘤,特别是MYC/BCL2重组的B细胞淋巴瘤,通常会降低表面B细胞受体 (BCR) /CD79B的调节,从而限制ADC的疗效.
  • 需要新的治疗策略来克服在侵略性B细胞淋巴瘤中BCR的灭绝.

研究的目的:

  • 为了确定BCR灭绝的攻击性B细胞淋巴瘤中小分子药物脆弱性.
  • 探索对MYC驱动淋巴瘤中CD79B导向的ADC的补充治疗方法.
  • 研究BCR阴性淋巴瘤中药物敏感性背后的机制.

主要方法:

  • 在 λ-MYC 鼠标 B 细胞淋巴瘤模型中,表面 BCR 表达的条件切除.
  • 查1475个小分子化合物,包括已批准的药物,对合成BCR阳性和BCR阴性瘤细胞.
  • 涉及mTOR和CDK4/6通路,蛋白质合成和Cyclin D3水平的机制研究.

主要成果:

  • 确定了针对BCR阳性和BCR阴性细胞的活性化合物.
  • mTORC1/2和CDK4/6的抑制剂对BCR阴性淋巴瘤细胞表现出强大的疗效.
  • BCR损失与受损的mTOR依赖性代谢和对CDK4/6抑制剂的敏感性增加有关.

结论:

  • 在MYC驱动的B细胞淋巴瘤中存在有针对性的漏洞,这些淋巴瘤会使BCR表达沉默.
  • mTOR和CDK4/6抑制剂显示为对攻击性B细胞淋巴瘤的补充疗法具有前途.
  • 将CD79B导向的ADC与mTOR或CDK4/6抑制剂结合起来,可以克服治疗耐药性.