Tuft cell heterogeneity in function, lineage, and structure in ileal inflammatory disease

项目摘要/摘要 炎症性肠病(IBD)，如克罗恩病(CD)和溃疡性结肠炎(UC)，是一种 一组复杂的肠道疾病，导致上皮损伤，使宿主暴露于 管腔微生物。丛生细胞最近被确定为微生物组的响应者， 在那里它们可以分泌损伤修复分子，如前列腺素。此外，我们的 实验室已成功证明簇状细胞促进肠道结构的恢复 在回肠炎性疾病中。在本增刊中，我们提出了创新的实验和 破译簇状细胞下游效应分子的计算方法 调节炎症。我们将使用小鼠模型，其中簇状细胞消融和簇状细胞特异性 基因敲除来确定丛生细胞产生前列腺素是否与 它们的免疫调节作用。相关的上皮和微环境机制 这些变化将通过单细胞测序和多重免疫荧光来检测。 通过我们的发现，我们的目标是对目前对簇毛的理解做出重大贡献 细胞生物学和肠道炎症。最终，这项研究将使我们能够更好地 了解丛状细胞在IBD中的作用，并扩大这一复杂、多因素的靶点池 疾病。

PROJECT SUMMARY/ABSTRACT Inflammatory bowel disease (IBD), such as Crohn’s disease (CD) and ulcerative colitis (UC), is a complex group of intestinal disorders that results in injury to the epithelium exposing the host to the luminal microbes. Tuft cells have recently been identified as a responder to the microbiome, where they can secrete damage-restitution molecules such as prostaglandins. Furthermore, our lab has successfully demonstrated that tuft cells promote the restoration of intestinal architecture in ileal inflammatory disease. In this supplement, we propose innovative experimental and computational approaches to decipher the effector molecules downstream of tuft cells that modulate inflammation. We will use mouse models where of tuft cell ablation and tuft cell specific gene knockout to determine whether prostaglandin production from tuft cells is responsible for their immunomodulatory effects. The epithelial and microenvironmental mechanisms responsible for these changes will be assayed by single-cell sequencing and multiplex immunofluorescence. Through our findings, we aim to make significant contributions to the current understanding of tuft cell biology and inflammation in the intestine. Ultimately, this research will allow us to better understand where tuft cells act in IBD and expand the pool of targets in this complex, multifactorial disease.