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J Innate Immun:研究发现天然脂质具有超强大的抗炎作用,有望彻底根除炎症性疾病

2018-07-09 细胞 细胞

美国国立卫生研究院的研究人员已经发现了一种天然存在的脂质,即一种蜡状的脂肪酸,它被一种致病的细菌用来破坏宿主的免疫反应,增加感染的机会。无意中,他们还发现了一种针对细菌和病毒性疾病的有效炎症疗法。

美国国立卫生研究院的研究人员已经发现了一种天然存在的脂质,即一种蜡状的脂肪酸,它被一种致病的细菌用来破坏宿主的免疫反应,增加感染的机会。无意中,他们还发现了一种针对细菌和病毒性疾病的有效炎症疗法。

众所周知,脂类能够帮助引起兔耳菌血症的图拉瑞斯细菌抑制宿主炎症。在《先天免疫杂志》上发表的一项新研究中,NIH国家过敏症和传染病研究所的研究人员发现了一种存在于细菌中的脂质磷脂酰亚胺(PE)。图拉瑞斯中发现的PE与其他细菌中发现的PE成分不同。在细胞培养实验中,研究人员发现天然的和合成的PE可以减少兔耳菌和登革热病毒引起的炎症。

兔热病是一种危及生命的疾病,通过与受感染动物的接触或蚊虫、蜱虫或鹿蝇的叮咬传播给人类。尽管兔热病可以用抗生素进行成功治疗,但很难诊断,主要是因为吐拉瑞斯细菌可以抑制人类免疫应答。登革热主要由埃及伊蚊传播,很少致命,但通常会导致高烧、严重头痛和全身疼痛。目前还没有针对登革热的具体治疗方法。

在确定了PE是影响免疫反应的脂质后,科学家们开始考虑其潜在的治疗价值。由于天然的吐拉瑞斯具有很高的传染性,因此很难与之合作,该组织开发了合成脂质pe2410和pepc2410,这将更容易研究和生产。他们随后证实,在实验室中,这两种合成脂类也抑制了小鼠和人类细胞感染时的免疫反应。

由于几种类型的病毒感染涉及无限制的炎症反应,该小组在实验室中测试了自然和合成的PE,以对抗登革热病毒感染的人类细胞。与未受感染但未接受治疗的细胞相比,这两个版本都抑制了免疫反应。

该研究小组计划继续探索图拉瑞斯如何破坏免疫反应。他们希望他们的发现最终能发展出一种有效的、广谱的抗炎治疗方法。

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    2018-07-18 风铃830
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    2018-08-31 liye789132251
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    2018-07-10 kafei

    学习了谢谢

    0

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    2018-07-10 1209e435m98(暂无昵称)

    学习了.谢谢分享

    0

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