使用AstroPath平台的多光谱成像分析表明PD-1阻断的有效性
Sneha Berry1,2,3, Nicolas A Giraldo4, Benjamin F Green1,2,5
1The Mark Foundation Center for Advanced Genomics and Imaging, Johns Hopkins University, Baltimore, MD 21287, USA.
概括
这项研究介绍了AstroPath,一个用于分析瘤组织的新平台. 它确定了黑色素瘤中的关键免疫细胞特征,预测了对抗编程细胞死亡-1 (PD-1) 免疫疗法的反应.
科学领域:
- 癌症学
- 免疫学
- 生物技术
背景情况:
- 下一代免疫治疗生物标志物需要同时分析多种细胞类型,空间相互作用和免疫调节分子.
- 目前的方法可能不足以进行详细的组织分析.
研究的目的:
- 推出一个全面的平台,AstroPath,用于高准确度,单细胞分辨率的多光谱成像和瘤组织映射.
- 在黑色素瘤治疗前确定基于组织的生物标志物,可预测抗编程细胞死亡-1 (PD-1) 疗法的反应.
主要方法:
- 开发一个集成图像分析和天文数据处理的 AstroPath 平台.
- 在治疗前的黑色素瘤样本上使用六种标记物.
- 在独立患者队列中验证已识别的预测特征.
主要成果:
- 通过AstroPath,能够对瘤组织进行高准确性单细胞分辨率分析.
- 确定了抗PD-1治疗反应的关键预测特征,包括CD163+PD- L1- 骨髓细胞和CD8+FoxP3+PD-1低/ 中T细胞.
- 结合这些特征的预测特征使黑色素瘤患者的长期存活率分层.
结论:
- 在癌症免疫疗法中发现新的基于组织的生物标志物.
- 在治疗前的黑色素瘤中,特定的免疫细胞群和它们的特征预测了对抗PD-1封锁的反应.
- 这种方法为接受免疫治疗的黑色素瘤患者提供了个性化治疗策略.
更多相关视频
06:07Monitoring PD-1-Blocking Antibodies Bound to T Cells Derived from a Drop of Peripheral Blood
Published on: February 5, 2020
5.9K
10:18Author Spotlight: Magnetic Fluorescent Bead-Based Dual-Reporter Flow Analysis of PDL1-Vaxx Peptide Vaccine-Induced Antibody Blockade of the PD-1/PD-L1 Interaction
Published on: July 7, 2023
1.5K
相关概念视频
Tumor Progression
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Targeted Cancer Therapies
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 specific...
There are several types of targeted therapies against specific...
PI3K/mTOR/AKT Signaling Pathway
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a rapamycin-insensitive companion...
Tumor Immunotherapy
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.
