一种针对MERTK的抗体-药物结合物选择性地消耗M2瘤相关的巨细胞和表达MERTK的癌细胞
Shugaku Takeda1, Subhasree Sridhar2, Daniel Schefer1
1Inspirna, Inc. United States.
Cancer research
|February 9, 2026
概括
一种新型抗体-药物合物 (ADC) 针对MERTK的癌细胞和M2巨细胞,显示出优异的抗瘤疗效和没有视网膜毒性. 这种双重准的方法提高了癌症治疗的机会.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 药理学 药理学 是一个学科.
背景情况:
- MERTK受体氨酸激酶对M2巨细胞的免疫抑制至关重要,并且在癌细胞中过度表达,促进瘤进展.
- 瘤微环境中的M2巨细胞有助于瘤生长和免疫治疗耐药性.
- 癌细胞中的MERTK过度表达通过增殖和抗亡信号驱动生存和转移.
研究的目的:
- 开发和评估一种抗体-药物联合体 (ADC),同时向MERTK表达M2瘤相关的巨细胞和癌细胞.
- 评估针对MERTK的ADC的治疗潜力和安全概况.
主要方法:
- 开发一种ADC (RGX-019-MMAE),将MERTK结合抗体 (RGX-019) 与细胞毒性有效载荷 (MMAE) 结合起来.
- 使用人性化小鼠评估ADC在MERTK表达瘤中的体外细胞毒性和体内抗瘤功效.
- 评估ADC对M2巨细胞种群的影响,并评估潜在的视网膜毒性.
主要成果:
- 未结合的抗体表现出内在的抗瘤活性,包括抑制M2细胞因子表达,抑制癌细胞殖民地形成,减少瘤生长和转移.
- 与未结合抗体相比,RGX-019-MMAE ADC在体外表现出增强的细胞毒性和在体内优越的抗瘤疗效.
- 瘤生长抑制与M2巨细胞枯竭有关,重要的是,RGX-019-MMAE ADC没有观察到视网膜毒性.
结论:
- 通过ADC同时向MERTK在癌细胞和M2巨细胞中,为表达MERTK的瘤提供了一个有希望的治疗策略.
- 开发的ADC显示出显著的抗瘤疗效,并改善了安全性,尤其是缺乏视网膜毒性.
- 这种方法为治疗广泛的MERTK驱动癌症提供了更好的机会.
更多相关视频
06:38Macrophage Differentiation and Polarization into an M2-Like Phenotype using a Human Monocyte-Like THP-1 Leukemia Cell Line
Published on: August 2, 2021
31.6K
10:59Conditional Knockdown of Gene Expression in Cancer Cell Lines to Study the Recruitment of Monocytes/Macrophages to the Tumor Microenvironment
Published on: November 23, 2017
12.8K
相关概念视频
Cancer Stem Cells and Tumor Maintenance
6.0K
Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
6.0K
Conjugated Proteins
28.9K
Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with non-protein moieties.
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
28.9K
Targeted Cancer Therapies
9.0K
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...
There are several types of targeted therapies against...
9.0K
Targets for Drug Action: Overview
10.5K
Drugs target macromolecules to modify ongoing cellular processes. Primary drug targets include receptors, ion channels, transporters, and enzymes.
Receptors are either membrane-spanning or intracellular proteins, which upon binding a ligand, get activated and transmit the signal downstream to elicit a response. Drugs bind receptors, either mimicking the action of endogenous ligands or blocking the receptor activity to bring about a modified response. Nearly 35% of approved drugs target the G...
Receptors are either membrane-spanning or intracellular proteins, which upon binding a ligand, get activated and transmit the signal downstream to elicit a response. Drugs bind receptors, either mimicking the action of endogenous ligands or blocking the receptor activity to bring about a modified response. Nearly 35% of approved drugs target the G...
10.5K
Conjugation
2.4K
Conjugation is a form of horizontal gene transfer that primarily occurs in bacteria and some archaea, promoting genetic diversity and adaptation. Bacteria can acquire resistance genes through conjugative plasmids, allowing them to survive antibiotic treatments that would otherwise be lethal. This process involves direct contact between cells through specialized structures such as the sex pilus and is mediated by conjugative plasmids, including the F (fertility) factor.Conjugation requires...
2.4K
Cell Specific Gene Expression
16.6K
Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
16.6K
