PMID- 23625833 OWN - NLM STAT- MEDLINE DCOM- 20140210 LR - 20220309 IS - 1098-1136 (Electronic) IS - 0894-1491 (Linking) VI - 61 IP - 7 DP - 2013 Jul TI - NFATc3 promotes Ca(2+) -dependent MMP3 expression in astroglial cells. PG - 1052-66 LID - 10.1002/glia.22494 [doi] AB - Increase in intracellular calcium ([Ca(2+) ]i ) is a key mediator of astrocyte signaling, important for activation of the calcineurin (CN)/nuclear factor of activated T cells (NFAT) pathway, a central mediator of inflammatory events. We analyzed the expression of matrix metalloproteinase 3 (Mmp3) in response to increases in [Ca(2+) ]i and the role of the CN/NFAT pathway in this regulation. Astrocyte Mmp3 expression was induced by overexpression of a constitutively active form of NFATc3, whereas other MMPs and tissue inhibitor of metalloproteinases (TIMP) were unaffected. Mmp3 mRNA and protein expression was also induced by calcium ionophore (Io) and 2'(3')-O-(4-benzoylbenzoyl) adenosine 5'-triphosphate (Bz-ATP) and Mmp3 upregulation was prevented by the CN inhibitor cyclosporin A (CsA). Ca(2+) -dependent astrocyte Mmp3 expression was also inhibited by actinomycin D, and a Mmp3 promoter luciferase reporter was efficiently activated by increased [Ca(2+) ]i , indicating regulation at the transcriptional level. Furthermore, Ca(2+) /CN/NFAT dependent Mmp3 expression was confirmed in pure astrocyte cultures derived from neural stem cells (Ast-NSC), demonstrating that the induced Mmp3 expression occurs in astrocytes, and not microglial cells. In an in vivo stab-wound model of brain injury, MMP3 expression was detected in NFATc3-positive scar-forming astrocytes. Because [Ca(2+) ]i increase is an early event in most brain injuries, these data support an important role for Ca(2+) /CN/NFAT-induced astrocyte MMP3 expression in the early neuroinflammatory response. Understanding the molecular pathways involved in this regulation could provide novel therapeutic targets and approaches to promoting recovery of the injured brain. CI - Copyright (c) 2013 Wiley Periodicals, Inc. FAU - Neria, Fernando AU - Neria F AD - Unidad de Neuroinflamacion, Area de Biologia Celular y del Desarrollo, Unidad Funcional de Investigacion en Enfermedades Cronicas, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain. FAU - del Carmen Serrano-Perez, Maria AU - del Carmen Serrano-Perez M FAU - Velasco, Patricia AU - Velasco P FAU - Urso, Katia AU - Urso K FAU - Tranque, Pedro AU - Tranque P FAU - Cano, Eva AU - Cano E LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130426 PL - United States TA - Glia JT - Glia JID - 8806785 RN - 0 (Enzyme Inhibitors) RN - 0 (NFATC Transcription Factors) RN - 0 (transcription factor NF-AT c3) RN - 37558-16-0 (Phorbol 12,13-Dibutyrate) RN - 4P5DXU1F8Q (3'-O-(4-benzoyl)benzoyladenosine 5'-triphosphate) RN - 8L70Q75FXE (Adenosine Triphosphate) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) RN - SY7Q814VUP (Calcium) SB - IM MH - Adenosine Triphosphate/analogs & derivatives/pharmacology MH - Animals MH - Animals, Newborn MH - Astrocytes/drug effects/*metabolism MH - Brain/cytology MH - Calcium/*metabolism MH - Cerebral Cortex/metabolism/pathology MH - Disease Models, Animal MH - Enzyme Inhibitors/pharmacology MH - Flow Cytometry MH - Gene Expression Regulation/drug effects/genetics/*physiology MH - Matrix Metalloproteinase 3/genetics/*metabolism MH - Mice MH - Mice, Inbred C57BL MH - NFATC Transcription Factors/genetics/*metabolism MH - Phorbol 12,13-Dibutyrate/pharmacology MH - Signal Transduction/drug effects/genetics MH - Time Factors MH - Wounds and Injuries/pathology EDAT- 2013/04/30 06:00 MHDA- 2014/02/11 06:00 CRDT- 2013/04/30 06:00 PHST- 2012/10/09 00:00 [received] PHST- 2013/02/14 00:00 [accepted] PHST- 2013/04/30 06:00 [entrez] PHST- 2013/04/30 06:00 [pubmed] PHST- 2014/02/11 06:00 [medline] AID - 10.1002/glia.22494 [doi] PST - ppublish SO - Glia. 2013 Jul;61(7):1052-66. doi: 10.1002/glia.22494. Epub 2013 Apr 26.