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相关概念视频

Physiological Barriers01:25

Physiological Barriers

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Physiological barriers are semi-permeable cellular structures restricting drug diffusion into intracellular compartments and tissues. There are six types of physiological barriers: blood endothelial, cell membrane, blood-brain, blood-cerebrospinal fluid (CSF), blood-placenta, and blood-testis barriers.
The blood endothelial barrier is the most porous of these. It allows all small ionized, un-ionized, and lipophilic molecules to pass through the endothelial lining into the interstitial space...
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The Blood-brain Barrier00:49

The Blood-brain Barrier

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Overview
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相关实验视频

Updated: May 15, 2025

Predicting In Vivo Payloads Delivery using a Blood-brain Tumor-barrier in a Dish
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Predicting In Vivo Payloads Delivery using a Blood-brain Tumor-barrier in a Dish

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对abscopal效应的流体障碍物

Tian V Tian1, Silvia Affò2

  • 1Upper GI and Endocrine Tumor Unit, Vall d'Hebron Institute of Oncology (VHIO), Hospital Universitari Vall d'Hebron, Vall d'Hebron Barcelona Hospital Campus, C/ Natzaret, 115-117, 08035 Barcelona, Spain.

Cancer cell
|May 13, 2025
PubMed
概括

与癌症相关的纤维细胞表达高水平的SFRP2减少了放射性免疫疗法.

科学领域:

  • 在瘤学瘤学.
  • 免疫学 免疫学 免疫学
  • 癌症生物学 癌症生物学

背景情况:

  • 放射性免疫疗法 (RAIT) 是有前途的,但受到瘤微环境的限制.
  • 癌症相关纤维细胞 (CAFs) 在塑造瘤微环境方面发挥着至关重要的作用.
  • 特定的CAF亚型可能会阻碍治疗疗效.

研究的目的:

  • 调查特定的CAFs在限制RAIT的腹腔效应中的作用.
  • 在CAF中识别分子点,以增强RAIT响应.

主要方法:

  • 在临床前模型中分析瘤微环境.
  • 研究了等离子素激活剂抑制剂-1 (PAI-1) 和分泌状相关蛋白2 (SFRP2) 的作用.
  • 评估了针对PAI-1和SFRP2对T细胞透和RAIT疗效的影响.

主要成果:

  • 发现PAI-1诱导的高SFRP2的CAF抑制了RAIT的abscopal效应.
  • 针对PAI-1或SFRP2导致增强T细胞对瘤的招募.
  • 这些CAF的抑制阻止了免疫抑制周血管的形成.

结论:

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  • 由PAI-1驱动的高SFRP2的CAF是RAIT腹效应的关键抑制剂.
  • 针对PAI-1或SFRP2是一个有前途的战略,可以改善RAIT的结果.
  • 调节CAF介导的免疫抑制位可以在RAIT期间增强抗瘤免疫力.