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氨酸表达的年龄相关变化导致梅博姆腺功能障碍

Sudhir Verma¹, Isabel Y Moreno², Mingxia Sun²

¹College of Optometry, University of Houston, 4401 Martin Luther King Boulevard, Houston, TX 77204-2020, USA; Department of Zoology, Deen Dayal Upadhyaya College, University of Delhi, Delhi 110078, India.

Matrix biology : journal of the International Society for Matrix Biology

|November 10, 2023

概括

氨酸 (HA) 基质的丧失有助于与年龄相关的梅博姆腺功能障碍 (ARMGD). 通过上调Has2表达来增加HA水平,可以预防小鼠的ARMGD,为干眼疾病提供治疗潜力.

科学领域:

眼科医生眼科眼科
皮肤病学皮肤病学
细胞外矩阵生物学细胞外矩阵生物学

背景情况:

干眼病 (DED) 影响5-50%的人口,显著降低生活质量.
梅博米腺功能障碍 (MGD) 导致~85%的DED病例.
与年龄相关的MGD (ARMGD) 随着梅博姆腺随着年龄的增长而发生变化,但其原因尚不清楚.

研究的目的:

调查氨酸 (HA) 基质的变化是否有助于ARMGD.
为了确定改变HA矩阵是否可以防止ARMGD.

主要方法:

野生类型 (wt) 和HA合成酶 (Has) 淘汰小鼠 (Has1-/-Has3-/-) 的衰老.
梅博姆腺体 (MG) 形态,脂质生成,PPARγ表达,细胞增殖,干细胞,缩和脱落的分析.
这些因素与HA矩阵组成的时间相关性 (8周至2年).

主要成果:

随着年龄的增长,Wt小鼠的HA表达减少,而Has1-/- Has3-/-小鼠由于Has2上调而增加了HA.
Has1-/-Has3-/-小鼠表现出显著扩大的MGs,表明组织继续发育而不是缩.
与体重小鼠相比,这些小鼠还表现出增加的脂质生产,PPARγ表达和细胞增殖.

结论:

随着年龄的增长,MG的HA矩阵的下降有助于ARMGD.
在小鼠模型中,通过Has2上调来提高HA水平有效地预防ARMGD.
针对HA矩阵为ARMGD和DED提供了一个潜在的治疗策略.

关键词:

衰老的衰老衰老的衰老氨酸是什么? 氨酸是什么?梅博姆腺体是什么意思眼睛表面的表面是眼睛的表面.干细胞是一种干细胞.

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