营养对炎症和乳腺癌(BC)预后的影响仍不确定。数据的机制表明,不同类型的脂肪酸(FAs)在致癌作用中起着至关重要的作用,α1抗胰蛋白酶(A1AT)的结合可能调节致癌作用。A1AT结合形式的表达增加和血管生成素样蛋白4(Angptl4)的释放靶向过氧化物酶体增殖物激活受体γ(PPAR-γ)的基因。我们的研究目的是比较无FA(A1AT-0)和FAs结合形式的A1AT对IL-1β水平的影响。PPAR-γ,和Angplt4在乳腺癌和对照女性中。
招募了10名乳腺癌女性和10名年龄在25-60岁的正常(Pi)M等位基因A1AT的对照女性。分离单核细胞,并用不同的A1AT和FA对各种组合(亚油酸,α-亚麻酸)用于时间依赖性研究(2、4、18和24小时),并分析白细胞介素-1β(IL-1b),PPAR-γ,通过ELISA方法和气相色谱法分析FAs和血管生成素样蛋白4(Angptl4)的表达。使用与多重比较相结合的单向ANOVA来比较均值。
100%的研究受试者对于A1AT的正常等位基因是纯合的。A1AT和A1AT结合脂肪酸对IL-Ib的时间依赖性作用,PPAR-g和Angptl4分别具有统计学意义P=0.07,P=0.001,P=0.02。与以前的研究对象相比。但是在群体中,病例组PPAR-g水平(F(15,40)1.606,P=0.003)与对照组Angptl4(F(15,32)0.64,P=0.043)差异有统计学意义。
据我们所知,这是第一种研究,我们推测,A1AT复合物与不同类型的FAs导致一种新形式的A1AT,具有稳定的调节炎症诱导合成的能力,processing,和释放活性形式的IL-1β。我们的实验数据表明,A1AT联合FAs的抗炎特性可能介导PPARγ和Angptl4激活,从而抑制IL-1b。这些发现可能值得评估BC的生物学效应和治疗效果。
The effect of nutrition on inflammation and breast cancer (BC) prognosis is still inconclusive. Mechanism of data suggests that different types of fatty acids (FAs) play an essential role in carcinogenesis, and binding of alpha 1 antitrypsin (A1AT) may modulate carcinogenesis. The increased expression in the bound form of A1AT and release of Angiopoietin-like protein 4 (Angptl4) targets the gene of peroxisome proliferator-activated receptor-gamma (PPAR-γ). Our aim of the
study was to compare the effect of FA-free (A1AT-0) and FAs bound forms of A1AT on levels of IL-1β,
PPAR-gamma, and Angplt4 in breast cancer and control women.
10 women with breast cancer and ten control women within the age group 25-60 years with normal (Pi) M allele A1AT were recruited. Mononuclear cells were isolated and treated with different A1AT and FAs on the various combinations (linoleic acid, alpha-linolenic acid) for time-dependent study (2,4,18 and 24 h) and analyzed for the interleukin -1 beta(IL-1b), PPAR-gamma, and Angiopoietin-like protein 4 (Angptl4) expression by using ELISA method and gas chromatography for analyzing FAs. One-way ANOVA combined with multiple comparisons is used to compare the means.
100% of the
study subjects were homozygous for the normal allele of A1AT. Time-dependent effects of A1AT and A1AT conjugated fatty acids on IL-I b, PPAR-g and Angptl4 showed statistically significant P = 0.07, P = 0.001, and P = 0.02 respectively, compared to those of the former
study subjects. But within the groups, PPAR-g levels in case group (F(15,40)1.606, P = 0.003) and Angptl4 in the control group (F(15,32)0.64, P = 0.043) differed significantly.
To the best of our knowledge, it\'s the first kind of
study, and we speculate that the A1AT complex with different types of FAs results in a new form of A1AT having a solid capability to regulate the inflammation-induced synthesis, processing, and release of an active form of IL-1β. Our experimental data shows that the anti-inflammatory property of A1AT combined FAs likely to be mediated PPAR γand Angptl4 activation, thereby inhibiting the IL-1b. These findings may be worth assessing BC\'s biological effects and therapeutic effectiveness.