Myeloid cells interact with a subset of thyrocytes to promote their migration and follicle formation through NF-κB

oleh: Rui-Meng Yang, Shi-Yang Song, Feng-Yao Wu, Rui-Feng Yang, Yan-Ting Shen, Ping-Hui Tu, Zheng Wang, Jun-Xiu Zhang, Feng Cheng, Guan-Qi Gao, Jun Liang, Miao-Miao Guo, Liu Yang, Yi Zhou, Shuang-Xia Zhao, Ming Zhan, Huai-Dong Song

Format: Article
Diterbitkan: Nature Portfolio 2023-12-01

Deskripsi

Abstract The pathogenesis of thyroid dysgenesis (TD) is not well understood. Here, using a combination of single-cell RNA and spatial transcriptome sequencing, we identify a subgroup of NF-κB-activated thyrocytes located at the center of thyroid tissues in postnatal mice, which maintained a partially mesenchymal phenotype. These cells actively protruded out of the thyroid primordium and generated new follicles in zebrafish embryos through continuous tracing. Suppressing NF-κB signaling affected thyrocyte migration and follicle formation, leading to a TD-like phenotype in both mice and zebrafish. Interestingly, during thyroid folliculogenesis, myeloid cells played a crucial role in promoting thyrocyte migration by maintaining close contact and secreting TNF-α. We found that cebpa mutant zebrafish, in which all myeloid cells were depleted, exhibited thyrocyte migration defects. Taken together, our results suggest that myeloid-derived TNF-α-induced NF-κB activation plays a critical role in promoting the migration of vertebrate thyrocytes for follicle generation.