A lysosomal regulatory circuit essential for the development and function of microglia.
A lysosomal regulatory circuit essential for the development and function of microglia.
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小胶质细胞发展和功能必不可少的溶酶体调节回路。
DOI:
10.1126/sciadv.abp8321
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发表时间:
2022-09-02
期刊:
影响因子:
13.6
通讯作者:
中科院分区:
文献类型:
--
作者:
As the primary phagocytic cells of the central nervous system, microglia exquisitely regulate their lysosomal activity to facilitate brain development and homeostasis. However, mechanisms that coordinate lysosomal activity with microglia development, chemotaxis, and function remain unclear. Here, we show that embryonic macrophages require the lysosomal guanosine triphosphatase (GTPase) RagA and the GTPase-activating protein Folliculin to colonize the brain in zebrafish. We demonstrate that embryonic macrophages in rraga mutants show increased expression of lysosomal genes but display significant down-regulation of immune- and chemotaxis-related genes. Furthermore, we find that RagA and Folliculin repress the key lysosomal transcription factor Tfeb and its homologs Tfe3a and Tfe3b in the macrophage lineage. Using RNA sequencing, we establish that Tfeb and Tfe3 are required for activation of lysosomal target genes under conditions of stress but not for basal expression of lysosomal pathways. Collectively, our data define a lysosomal regulatory circuit essential for macrophage development and function in vivo. The degradation machinery of the cell must be carefully controlled for the normal function of immune cells in the brain.
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影响因子:
7.1
作者:
Holtman IR;Raj DD;Miller JA;Schaafsma W;Yin Z;Brouwer N;Wes PD;Möller T;Orre M;Kamphuis W;Hol EM;Boddeke EW;Eggen BJ
通讯作者:
Eggen BJ
影响因子:
30.8
作者:
Haney MS;Bohlen CJ;Morgens DW;Ousey JA;Barkal AA;Tsui CK;Ego BK;Levin R;Kamber RA;Collins H;Tucker A;Li A;Vorselen D;Labitigan L;Crane E;Boyle E;Jiang L;Chan J;Rincón E;Greenleaf WJ;Li B;Snyder MP;Weissman IL;Theriot JA;Collins SR;Barres BA;Bassik MC
通讯作者:
Bassik MC
影响因子:
5.3
作者:
Combs, CK;Johnson, DE;Landreth, GE
通讯作者:
Landreth, GE
影响因子:
1.2
作者:
Benard, Erica L.;van der Sar, Astrid M.;Meijer, Annemarie H.
通讯作者:
Meijer, Annemarie H.
影响因子:
64.5
作者:
Gosselin D;Link VM;Romanoski CE;Fonseca GJ;Eichenfield DZ;Spann NJ;Stender JD;Chun HB;Garner H;Geissmann F;Glass CK
通讯作者:
Glass CK