Neuron-like function of the nephron central command
Gyarmati, G.; Shroff, U. N.; Riquier-Brison, A.; Stocker, S. D.; Izuhara, A.; Deepak, S.; Chen, Y.; Biemesderfer, D.; James, A.; Minichiello, L.; Zlokovic, B. V.; Peti-Peterdi, J.
Show abstract
Interoceptive neurons that sense and regulate our internal milieu have been identified in several organs except in the kidney cortex despite its major importance in maintaining body homeostasis. Here we report that the chief kidney cell type of the macula densa (MD) forms coordinated neural networks in each nephron that resemble peripheral ganglia. A combined in vivo single-cell 4D physiology (sc4DP) and scRNA sequencing approach identified the MD mechanisms of neuronal differentiation, heterogeneity (pacemaker MD cells), sensing of the local and systemic environment via multi-organ crosstalk, and regulation of organ functions by acting as the nephron central command. Consistent with their neuron-like nature, MD cells express the molecular fingerprint of neurodegeneration. Here we put forth the single-cell MD model and concept of local neural networks that control organ and body functions via interoception in normal physiological state and use an integrated mechanism of neurodegeneration in disease.
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