Sepehri Niloofar, Valipour Masoumeh, Parchizadeh Elmira, Maghami Parvaneh
Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Department of Biology, Faculty of Basic Science, Azarbaijan Shahid Madani University, Tabriz, Iran.
Protein J. 2023 Apr;42(2):112-124. doi: 10.1007/s10930-023-10102-y. Epub 2023 Mar 11.
The health benefits of natural products have a long history. Chaga (Inonotus obliques) is used in traditional medicine and is an essential antioxidant for protecting the body from oxidants. Reactive oxygen species (ROS) are produced routinely due to metabolic processes. However, environmental pollution factors such as methyl tert-butyl ether (MTBE) can increase oxidative stress in the human body. MTBE is widely used as a fuel oxygenator that can harm health. The widespread use of MTBE has posed significant threats to the environment by polluting environmental resources, including groundwater. This compound can accumulate in the bloodstream by inhaling polluted air, with a strong affinity for blood proteins. The primary mechanism of MTBE's harmful effects is ROS production. The use of antioxidants may help reduce MTBE oxidation conditions. The present study proposes that biochaga, as an antioxidant, can reduce MTBE damage in the bovine serum albumin (BSA) structure.
This study investigated the role of different concentrations of biochaga in the structural change of BSA in the presence of MTBE by biophysical methods such as UV-Vis, fluorescence, FTIR spectroscopy, DPPH radical inhibition method, aggregation test, and molecular docking. Research at the molecular level is critical to investigate the structural change of proteins by MTBE and the protective effect of the ideal dose (2.5 µg/ml) of biochaga.
the results of spectroscopic examinations showed that the concentration of 2.5 µg/ml of biochaga has the least destructive effect on the structure of BSA in the presence and absence of MTBE, and it can play as an antioxidant.
天然产物对健康有益的历史悠久。桦褐孔菌(Inonotus obliques)在传统医学中被使用,是保护身体免受氧化剂侵害的重要抗氧化剂。由于代谢过程,活性氧(ROS)会常规产生。然而,诸如甲基叔丁基醚(MTBE)等环境污染因素会增加人体的氧化应激。MTBE被广泛用作燃料含氧化合物,会损害健康。MTBE的广泛使用通过污染包括地下水在内的环境资源,对环境构成了重大威胁。这种化合物可通过吸入污染空气在血液中积累,对血液蛋白质具有很强的亲和力。MTBE有害作用的主要机制是产生ROS。使用抗氧化剂可能有助于减少MTBE的氧化条件。本研究提出,桦褐孔菌提取物作为一种抗氧化剂,可以减少MTBE对牛血清白蛋白(BSA)结构的损害。
本研究通过紫外可见光谱、荧光光谱、傅里叶变换红外光谱、DPPH自由基抑制法、聚集试验和分子对接等生物物理方法,研究了不同浓度的桦褐孔菌提取物在MTBE存在下对BSA结构变化的作用。在分子水平上进行研究对于探究MTBE对蛋白质结构的变化以及桦褐孔菌提取物理想剂量(2.5μg/ml)的保护作用至关重要。
光谱检查结果表明,在有和没有MTBE的情况下,2.5μg/ml浓度的桦褐孔菌提取物对BSA结构的破坏作用最小,并且它可以作为一种抗氧化剂发挥作用。