来自Talaromyces sp. 的氧化抑制和细胞毒性二次代谢产物. 这就是BHM8-7的意义
Jae Sang Han1, Dahyeon Lee2, Jun Gu Kim1
1College of Pharmacy, Chungbuk National University, Cheongju 28160, Republic of Korea.
Phytochemistry
|February 20, 2026
概括
研究人员从Talaromyces sp.中分离出了新的化合物. 在BHM8-7.0中使用. 化合物5抑制了氧化的产生,而化合物1和5对癌细胞具有强烈的细胞毒性.
科学领域:
- 自然产品化学 自然产品化学
- 药用化学 医学化学
- 微生物学 微生物学
背景情况:
- 塔拉罗米塞斯物种是已知的生物活性二次代谢产物的来源.
- 对具有治疗潜力的新化学实体进行真菌内细胞的研究至关重要.
研究的目的:
- 从Talaromyces sp.中分离和描述二次代谢物. 在BHM8-7.0中使用.
- 评估分离化合物的生物活性,包括抗炎和细胞毒性作用.
主要方法:
- 使用染色学技术分离和净化代谢物.
- 使用综合光谱方法 (1D/2D NMR,HRESIMS,ECD) 和马菲方法进行结构阐明.
- 在体外测试以评估氧化物抑制在脂聚糖 (LPS) 刺激的RAW 264.7巨细胞和对SK-OV-3和HCT-8癌细胞系的细胞毒性.
主要成果:
- 确定了两种新的六二烯 (1, 2),一种美二烯 (3) 和一种循环 (4),以及四种已知的化合物 (5-8).
- 化合物5在LPS刺激的RAW 264.7细胞中显著抑制了氧化的产生,没有观察到细胞毒性.
- 化合物1和5对SK-OV-3 (卵巢癌) 和HCT-8 (结肠癌) 细胞系表现出强烈的细胞毒性作用.
结论:
- 塔拉罗米切斯 (Talaromyces) 种类. BHM8-7是结构多样化的二次代谢产物的来源.
- 化合物5通过抑制氧化的产生,具有抗炎性质.
- 由于其强大的细胞毒性,化合物1和5是作为抗癌剂进一步研究的有希望的候选物.
相关概念视频
Nitric Oxide Signaling Pathway
6.4K
Nitric oxide (NO), an inorganic gas, acts as a potent second messenger in most animal and plant tissues. NO diffuses out of the cells that produce it and enters the neighboring cells to generate a downstream response. NO synthase (NOS) catalyzes NO production by the deamination of the amino acid arginine. There are three isoforms of NOS. Endothelial cells have endothelial NOS (eNOS), nerve and muscle cells have neuronal NOS (nNOS), and macrophages produce inducible NOS (iNOS) upon exposure...
6.4K
2° Amines to N-Nitrosamines: Reaction with NaNO2
5.6K
Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
5.6K
Gene Regulation in Microbial Communities: Quorum Sensing
750
Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
750
Biological Methods for Microbial Control
941
Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
941
Chemical Agents for Microbial Control
1000
Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
1000


