Serum opacity factor rescues fertility among female Scarb1(-/-) mice by reducing HDL-free cholesterol bioavailability.

Serum opacity factor rescues fertility among female Scarb1(-/-) mice by reducing HDL-free cholesterol bioavailability.
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DOI:
10.1016/j.jlr.2022.100327
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发表时间:
2023-02
影响因子:
6.5
通讯作者:
Pownall, Henry J.
Pownall, Henry J.
中科院分区:
生物学2区
文献类型:
--
作者:
Rosales, Corina;Yelamanchili, Dedipya;Gillard, Baiba K.;Liu, Jing;Gotto Jr, Antonio M.;Pownall, Henry J.

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人类女性不孕症,其中20%是特发性的,是一个公共卫生问题,需要更好的诊断和治疗方法。对缺乏高密度脂蛋白受体基因(Scar1)的雌性小鼠的研究发现了一种新的不孕症原因。这些小鼠不育,血浆高密度脂蛋白胆固醇(C)浓度高,这是由于高密度脂蛋白-游离胆固醇(FC)升高,它从高密度脂蛋白转移到所有组织。先前的研究表明,口服普罗布考,一种降低高密度脂蛋白胆固醇的药物,给雌性Scar1−/−小鼠降低血浆高密度脂蛋白-C浓度,拯救生育能力。此外,血清不透明因子(SOF),一种细菌毒力因子,扰乱了高密度脂蛋白的结构,并将血清不透明因子注射到小鼠体内,降低了血浆高密度脂蛋白-C浓度。在这里,我们发现,通过腺相关病毒(AAVSOF)将SOF传递给雌性Scar1−/−小鼠可以诱导结构性SOF表达,降低高密度脂蛋白-Fc浓度,并在恢复卵巢正常形态的同时拯救生育能力。虽然AAVSOF不改变卵巢Fc含量,但卵巢Fc与血浆高密度脂蛋白%Fc呈生育力依赖性相关。因此,逆转雌性Scar1-/-小鼠高血浆高密度脂蛋白-摩尔%Fc的异常血浆微环境可挽救生育能力。这些数据为寻找高密度脂蛋白胆固醇与不孕症之间的相似机制联系以及通过降低血浆高密度脂蛋白胆固醇水平来挽救女性的生育能力提供了理论基础。
Human female infertility, 20% of which is idiopathic, is a public health problem for which better diagnostics and therapeutics are needed. A novel cause of infertility emerged from studies of female mice deficient in the HDL receptor gene (Scarb1). These mice are infertile and have high plasma HDL cholesterol (C) concentrations, due to elevated HDL-free cholesterol (FC), which transfers from HDL to all tissues. Previous studies have indicated that oral delivery of probucol, an HDL-lowering drug, to female Scarb1−/− mice reduces plasma HDL-C concentrations and rescues fertility. Additionally, serum opacity factor (SOF), a bacterial virulence factor, disrupts HDL structure, and bolus SOF injection into mice reduces plasma HDL-C concentrations. Here, we discovered that delivering SOF to female Scarb1−/− mice with an adeno-associated virus (AAVSOF) induces constitutive SOF expression, reduces HDL-FC concentrations, and rescues fertility while normalizing ovary morphology. Although AAVSOF did not alter ovary-FC content, the ovary-mol% FC correlated with plasma HDL-mol% FC in a fertility-dependent way. Therefore, reversing the abnormal plasma microenvironment of high plasma HDL-mol% FC in female Scarb1-/- mice rescues fertility. These data provide the rationale to search for similar mechanistic links between HDL-mol% FC and infertility and the rescue of fertility in women by reducing plasma HDL-mol% FC.
DOI: 10.1021/bi3011994
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期刊: BIOCHEMISTRY
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期刊: BIOCHEMISTRY
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DOI: 10.1016/0005-2760(94)90125-2
发表时间: 1994-01-03
期刊: BIOCHIMICA ET BIOPHYSICA ACTA-LIPIDS AND LIPID METABOLISM
影响因子: --
作者:
LEGOFF, D
通讯作者: LEGOFF, D