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纳米封装奇亚油通过抑制氧化应激和调节肿瘤基因表达抑制 DMBA 诱导的大鼠乳腺癌的作用。

The suppressive role of nanoencapsulated chia oil against DMBA-induced breast cancer through oxidative stress repression and tumor genes expression modulation in rats.

机构信息

Cell Biology Department, Biotechnology Research Institute, National Research Centre, Giza, P.O.12622, Egypt.

Nutrition and Food Sciences Department, Food Industries and Nutrition Research Institute, National Research Centre, Giza, P.O.12622, Egypt.

出版信息

Mol Biol Rep. 2022 Nov;49(11):10217-10228. doi: 10.1007/s11033-022-07885-1. Epub 2022 Sep 5.

Abstract

BACKGROUND

Chia oil is high in omega-3 fatty acids, which have been linked to a lower risk of many diseases, including cancer. Oil encapsulation is a method that holds promise for maintaining oil content while enhancing solubility and stability. The purpose of this study is to prepare nanoencapsulated Chia oil and investigate its suppressive effects on rat chemically induced breast cancer.

METHODS

The oil was extracted from commercial Chia seeds and their fatty acids were analyzed using Gas Chromatography-mass spectrometry (GC/MS). Sodium alginate was used as a loading agent to create the Chia oil nanocapsules. The DPPH assay was used to assess the oil nanocapsules' capacity to scavenge free radicals. Breast cancer induction was done by single dose subcutaneously administration of 80 mg/kg dimethylbenz (a) anthracene (DMBA). Models of breast cancer were given Chia oil nanocapsules orally for one month at doses of 100 and 200 mg/kg. Through measuring intracellular reactive oxygen species (ROS) and protein carbonyl, assessing the gene expression of tumor suppressor genes (BRCA 1 & 2, TP53), and conducting histopathological analysis, the suppressive effect of Chia oil nanocapsules was examined.

RESULTS

The increase in ROS and PC levels brought on by DMBA was significantly decreased by the administration of Chia oil nanocapsules. In tumor tissue from rats given Chia oil nanocapsules, the mRNA expression levels of BRCA1, BRCA2, and TP53 were controlled Histopathological analysis clarified that the tissue architecture of breast tumors was improved by nanocapsules management.

CONCLUSIONS

These findings demonstrate the ability of Chia oil nanocapsules to inhibit cancer cells in the rat breast.

摘要

背景

奇亚籽油富含欧米伽-3 脂肪酸,这种脂肪酸与许多疾病(包括癌症)的低风险有关。油包埋是一种有前途的方法,可以在保持油含量的同时提高溶解度和稳定性。本研究旨在制备纳米封装的奇亚籽油,并研究其对大鼠化学诱导乳腺癌的抑制作用。

方法

从商业奇亚籽中提取油,并使用气相色谱-质谱联用(GC/MS)分析其脂肪酸。使用海藻酸钠作为负载剂来制备奇亚籽油纳米胶囊。使用 DPPH 测定法评估油纳米胶囊清除自由基的能力。通过单次皮下注射 80mg/kg 二甲基苯并(a)蒽(DMBA)诱导乳腺癌。乳腺癌模型口服给予奇亚籽油纳米胶囊,剂量分别为 100 和 200mg/kg,持续一个月。通过测量细胞内活性氧(ROS)和蛋白羰基,评估肿瘤抑制基因(BRCA1 和 BRCA2、TP53)的基因表达,并进行组织病理学分析,来研究奇亚籽油纳米胶囊的抑制作用。

结果

DMBA 引起的 ROS 和 PC 水平升高,经奇亚籽油纳米胶囊给药后显著降低。在给予奇亚籽油纳米胶囊的大鼠肿瘤组织中,BRCA1、BRCA2 和 TP53 的 mRNA 表达水平得到控制。组织病理学分析表明,纳米胶囊处理改善了乳腺肿瘤的组织形态。

结论

这些发现表明奇亚籽油纳米胶囊能够抑制大鼠乳腺癌细胞。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef25/9618492/1f59bbdcfc54/11033_2022_7885_Fig1_HTML.jpg

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