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相关概念视频

Tumor Immunotherapy01:27

Tumor Immunotherapy

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Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
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Targeted Cancer Therapies02:57

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The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
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Cytotoxic T Cells-mediated Immune Response01:27

Cytotoxic T Cells-mediated Immune Response

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Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
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Cancer Therapies02:49

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Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
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Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
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Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
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相关实验视频

Updated: Jun 27, 2025

Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo
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用于瘤治疗的酶响应性解性多.

Renyong Yin1, Penqi Wan2, Zhihui Guo1

  • 1Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China; School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, PR China.

Acta biomaterialia
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一种新型的性酸酶响应型多前体 (C12-PLL/PA) 通过将瘤内的负电荷转化为正电荷,有效地向并摧毁癌细胞. 这种酶激活的解聚合物显示出显著的瘤抑制与最小的副作用,提供一个更安全的癌症治疗方法.

关键词:
性酸酶是一种性酸酶.癌症治疗治疗 癌症治疗阴离子聚合物 阴离子聚合物膜的机制 膜的机制瘤分析性类.

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相关实验视频

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科学领域:

  • 生物材料科学 生物材料科学
  • 聚合物化学 聚合物化学
  • 癌症治疗方法 癌症治疗方法

背景情况:

  • 模仿宿主防御的阴离子解聚合物对癌症治疗有希望.
  • 现有的阴离子聚合物面临着快速清除和目标外毒性的挑战.
  • 需要选择性瘤和更安全的解性聚合物策略至关重要.

研究的目的:

  • 开发一种酶响应性性多前体,用于增强体内癌症治疗.
  • 设计一种可在瘤微环境内选择性激活的聚合物.
  • 为了减轻与高阴离子聚合物相关的毒性.

主要方法:

  • 合成一种性酸酶 (ALP) 响应的多前体 (C12-PLL/PA).
  • 在瘤中通过细胞外ALP对C12-PLL/PA进行水解,产生活性C12-PLL.
  • 在4T1乳腺瘤模型中评估膜-活动,癌细胞破坏和体内瘤抑制.

主要成果:

  • 通过瘤特异性ALP活性,C12-PLL/PA可选择性地转化为活性,膜性C12-PLL形式.
  • 激活的多有效地破坏癌细胞膜,诱导快速亡.
  • 在4T1正型乳腺瘤模型中观察到显著的瘤生长抑制,副作用可以忽略不计.

结论:

  • 用酸盐部分屏蔽 cationic 群组创建了一个安全和有效的 oncolytic 聚前体.
  • 酶响应激活为瘤特异性输送和降低全身毒性提供了一个有希望的策略.
  • 这种方法为设计下一代酶激活解聚合物用于癌症治疗提供了宝贵的参考.