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双向发送功能在Sonic hedgehog中脱落并转移到高密度脂蛋白
Kristina Ehring1, Sophia Friederike Ehlers1, Jurij Froese1
1Institute of Physiological Chemistry and Pathobiochemistry, University of Münster, Münster, Germany.
eLife
|September 19, 2024
概括
高密度脂蛋白 (HDL) 促进Sonic hedgehog (Shh) 从细胞膜释放,将其转化为可溶性形式. 这一过程由Dispatched (Disp) 介导,调整Shh生物活性以适应特定的细胞反应.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 发展生物学 发展生物学
背景情况:
- 声波刺 (Shh) 信号通路对于胚胎发育和组织平衡至关重要.
- SHH前体是双脂质的,与血膜密切相关,需要调节的溶解来发送信号.
- 发送 (Disp) 输送器促进了Shh前体的释放,但精确的脂质Shh溶解的机制尚不清楚.
研究的目的:
- 阐明Dispatched (Disp) 通过该机制调解血膜中的脂化Sonic hedgehog (Shh) 的溶解.
- 为了识别调节散射介导SHh流失的因素.
- 研究不同SHH溶解形式在调节细胞反应中的作用.
主要方法:
- 通过生物化学测试研究了分散介导的SHh泄漏.
- 确定高密度脂蛋白 (HDL) 是参与SHH溶解的关键血清因子.
- 利用人工胆固醇化mCherry和N-palmitoylatedShh变种来评估胆固醇修饰对于Disp介导转移的必要性.
- 分析了不同Shh溶性形式的生物活性.
主要成果:
- 确定了高密度脂蛋白 (HDL) 作为调节分散介导SHh流出的血清因子.
- 证明HDL作为可溶性水槽,用于由Disp.释放的胆固醇修饰的Shh.
- 证实Shh的C端胆固醇化对于分散介导转移到HDL是必要和充分的.
- 显示与HDL相关的N加工Shh与双加工可溶Shh相比具有显著更高的生物活性.
结论:
- 高密度脂蛋白 (HDL) 在Sonic hedgehog (Shh) 的分散媒介脱落和溶解中发挥着关键作用.
- 胆固醇修饰的SHH转移到HDL是生成可溶性SHH形式的关键步骤.
- 不同的可溶性Shh形式,通过HDL关联和随后的处理产生,允许以组织和时间特定的方式微调细胞反应.
关键词:
D. melanogaster. D. melanogaster. D. melanogaster. D. melanogaster. D. melanogaster. D. melanogaster. D. melanogaster. D. melanogaster. D. melanogaster. D. melanogaster. D. melanogaster. D. melanogaster. D. melanogaster. D. melanogaster. D. melanogaster. D. melanogaster. melanogaster. D. melanogaster. melanogaster. D. melanogaster. D. melanogaster. melanogaster. D.已发送 已发送 已经发送信号传输 信号传输生物化学 生物化学细胞生物学 细胞生物学化学生物学 化学生物学胆固醇 胆固醇 胆固醇 是一种刺是一种刺,刺是一种刺.高密度脂蛋白是一种高密度脂蛋白.蛋白质溶解过程中的蛋白质溶解.
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