Abstract
Fibroblasts are typically described as cells that produce extracellular matrix,contribute to the formation of con-nective tissue,and maintain the structural framework of tissues.Fibroblasts are the first cell type to be transdif-ferentiated into inducible pluripotent stem cells(iPSCs),demonstrating their versatility and reprogrammability.Currently,there is relatively extensive characterization of the anatomical,molecular,and functional diversity of fibroblasts in different peripheral organs and tissues.With recent advances in single cell RNA sequencing,heterogeneity and diversity of fibroblasts in the central nervous system(CNS)have also begun to emerge.Based on their distinct anatomical locations in the meninges,perivascular space,and choroid plexus,as well as their molecular diversity,important roles for fibroblasts in the CNS have been proposed.Here,we draw inspirations from what is known about fibroblasts in peripheral tissues,in combination with their currently identified CNS locations and molecular characterizations,to propose potential functions of CNS fibroblasts in health and disease.Future studies,using a combination of technologies,will be needed to determine the bona fide in vivo functions of fibroblasts in the CNS.
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