Pseudomonas fluorescens lectin (PFL) 的抗癌活性是针对乳腺癌细胞的高曼诺斯甘氨酸
Yuichiro Sato1, Kohei Kawabata2, Chiho Murakami1
1Department of Medical Pharmacy, Faculty of Pharmacy, Yasuda Women's University, Hiroshima, Japan.
Biochimica et biophysica acta. General subjects
|January 31, 2026
概括
伪虫光素 (PFL) 莱克 (Pseudomonas fluorescens lectin) 针对乳腺癌细胞的高曼诺斯甘氨酸,诱导细胞亡并改变细胞过程. 这项研究提供了对糖甘向治疗反应和耐药性机制的见解.
科学领域:
- 生物化学 生物化学
- 细胞生物学 细胞生物学
- 癌症研究 癌症研究
背景情况:
- 异常的糖化,特别是高曼诺斯的N-甘氨酸,是癌细胞的标志.
- 这些甘氨酸代表了新型癌症治疗的潜在目标.
- 伪虫光素学蛋白 (PFL) 特别结合高曼诺斯甘.
研究的目的:
- 为了研究乳腺癌细胞系 (MDA-MB-231和T47D) 对PFL的细胞反应,作为高曼诺斯甘氨酸向治疗的模型.
- 阐明PFL诱导的细胞死亡和细胞变化的背后机制.
- 探索乳腺癌细胞中潜在的抵抗机制.
主要方法:
- 用PFL对MDA-MB-231和T47D细胞进行治疗.
- 对癌症相关分子 (EGFR,整体蛋白,免疫检查点连接体) 的细胞内化和降解的分析.
- 评估自,亡,激素受体和HER2表达,细胞脂质概况,细胞膜氧化还原状态和炎症性细胞因子释放 (IL-8).
主要成果:
- 通过自,PFL诱导了关键癌症分子的内化和降解,导致两种细胞系的细胞亡.
- T47D细胞显示了激素受体和HER2表达的改变,表明了补偿反应.
- PFL治疗显著增加了溶解脂,诱导了细胞膜氧化,并在MDA-MB-231细胞中增加了IL-8.
结论:
- 在乳腺癌细胞中,PFL通过准高曼诺斯糖甘并诱导自,从而触发细胞死亡.
- 乳腺癌细胞表现出不同的反应和潜在的补偿机制,以糖甘向治疗.
- 了解这些细胞动态对于开发有效的基于甘氨酸的癌症治疗至关重要.
相关概念视频
Targeted Cancer Therapies
8.9K
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...
8.9K
Target Cell Response to Hormones
5.7K
Hormones intricately bind to receptors on the surface or within target cells, initiating a cascade of cellular responses.
Notably, the cellular response can be regulated by altering the number of receptors expressed in the cell. For example, prolonged exposure to elevated hormone levels results in a gradual decline or down-regulation in the number of receptors for that specific hormone on the cell surface. Conversely, in response to low hormone levels, cells may use up-regulation, producing an...
Notably, the cellular response can be regulated by altering the number of receptors expressed in the cell. For example, prolonged exposure to elevated hormone levels results in a gradual decline or down-regulation in the number of receptors for that specific hormone on the cell surface. Conversely, in response to low hormone levels, cells may use up-regulation, producing an...
5.7K
B Cell Activation and Differentiation
16.6K
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
16.6K
Cancer Cell Migration through Invadopodia
3.3K
Invadosome is a broad category of cell surface structures with proteolytic activity that degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However,...
3.3K
Adaptive Mechanisms in Cancer Cells
7.1K
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
7.1K
T Cell Activation and Clonal Selection
16.1K
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
16.1K


