在小鼠味觉系统中表达Calca基因衍生
bioRxiv : the preprint server for biology
|February 6, 2026
概括
素相关多阿尔法基因产生调节味道信号的. 前素和素基因相关 (CGRP) 可能影响味觉细胞再生和口腔微生物群.
科学领域:
- 分子生物学分子生物学
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
背景情况:
- 素相关多α (Calca) 基因产生像素和素基因相关 (CGRP) 这样的.
- 已知CGRP在味觉神经元中表达,并可能调节味觉信号.
- CGRP受体 (CGRP1R) 是CALCRL和RAMP1的复合体,而公素可以在这个受体上对抗CGRP.
研究的目的:
- 研究 Calca 基因产物和 CGRP1R 组件在味蕾和相关的表达模式.
- 探索前素和CGRP在味道信号传递,味道细胞再生和味道微生物群中的潜在作用.
主要方法:
- 味蕾的单细胞和大量RNA测序.
- 定量聚合酶连锁反应 (qPCR) 发生在生殖器和结节-节性上.
- 通过RNAScope和免疫组织化学验证基因和蛋白质表达模式.
主要成果:
- 在II型味觉细胞中发现了前前素的转录,而Calcrl和Ramp1则表达在干细胞/原始细胞和环状乳头中的I型细胞中.
- 在语言纤维细胞中也检测到CGRP1R.
- 结核和结节-关节结节表达了Cgrp和CGRP1R亚单元mRNAs,但不是前素或Calcr.
结论:
- 独特的表达模式表明,前素和CGRP可能在味觉细胞和语言纤维细胞中相互调节CGRP1R.
- 这些相互作用可能会影响味道信号传递,味道细胞再生和味道微生物群.
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