TY - JOUR
T1 - Direct vascular channels connect skull bone marrow and the brain surface enabling myeloid cell migration
AU - Herisson, Fanny
AU - Frodermann, Vanessa
AU - Courties, Gabriel
AU - Rohde, David
AU - Sun, Yuan
AU - Vandoorne, Katrien
AU - Wojtkiewicz, Gregory R.
AU - Masson, Gustavo Santos
AU - Vinegoni, Claudio
AU - Kim, Jiwon
AU - Kim, Dong Eog
AU - Weissleder, Ralph
AU - Swirski, Filip K.
AU - Moskowitz, Michael A.
AU - Nahrendorf, Matthias
N1 - Publisher Copyright:
© 2018, The Author(s).
PY - 2018/9/1
Y1 - 2018/9/1
N2 - Innate immune cells recruited to inflammatory sites have short life spans and originate from the marrow, which is distributed throughout the long and flat bones. While bone marrow production and release of leukocyte increases after stroke, it is currently unknown whether its activity rises homogeneously throughout the entire hematopoietic system. To address this question, we employed spectrally resolved in vivo cell labeling in the murine skull and tibia. We show that in murine models of stroke and aseptic meningitis, skull bone marrow-derived neutrophils are more likely to migrate to the adjacent brain tissue than cells that reside in the tibia. Confocal microscopy of the skull–dura interface revealed myeloid cell migration through microscopic vascular channels crossing the inner skull cortex. These observations point to a direct local interaction between the brain and the skull bone marrow through the meninges.
AB - Innate immune cells recruited to inflammatory sites have short life spans and originate from the marrow, which is distributed throughout the long and flat bones. While bone marrow production and release of leukocyte increases after stroke, it is currently unknown whether its activity rises homogeneously throughout the entire hematopoietic system. To address this question, we employed spectrally resolved in vivo cell labeling in the murine skull and tibia. We show that in murine models of stroke and aseptic meningitis, skull bone marrow-derived neutrophils are more likely to migrate to the adjacent brain tissue than cells that reside in the tibia. Confocal microscopy of the skull–dura interface revealed myeloid cell migration through microscopic vascular channels crossing the inner skull cortex. These observations point to a direct local interaction between the brain and the skull bone marrow through the meninges.
UR - http://www.scopus.com/inward/record.url?scp=85052686834&partnerID=8YFLogxK
U2 - 10.1038/s41593-018-0213-2
DO - 10.1038/s41593-018-0213-2
M3 - Article
C2 - 30150661
AN - SCOPUS:85052686834
SN - 1097-6256
VL - 21
SP - 1209
EP - 1217
JO - Nature Neuroscience
JF - Nature Neuroscience
IS - 9
ER -