Macrophages Enforce the Blood Nerve Barrier
Macrophages Enforce the Blood Nerve Barrier
复制标题
巨噬细胞强化血神经屏障
DOI:
10.1101/493494
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Malong L
中科院分区:
文献类型:
--
作者:
Malong L
The specialised blood barriers of the nervous system are important for protecting the neural environment but can hinder therapeutic accessibility,. Studies in the central nervous system (CNS) have shown the importance of the cellular components of the neuro-vascular unit for blood-brain barrier (BBB) function. Whilst the endothelial cells (ECs) confer barrier function with specialised tight junctions (TJs) and low levels of transcytosis, pericytes and astrocytes provide complete coverage of the ECs and both deliver essential signals for the development and maintenance of the BBB–. In contrast, the blood-nerve barrier (BNB) of the peripheral nervous system (PNS) remains poorly defined. Here, we show that the vascular unit in the PNS has a distinct cellular composition with only partial coverage of the BNB-forming ECs. Using a mouse model, in which barrier function can be controlled, we show the BNB, while less tight than the BBB, is maintained by low levels of transcytosis and the TJs of the ECs, with opening of the barrier associated with increased transcytosis. Importantly, we find that while ECs of the PNS have higher transcytosis rates than those of the CNS, the barrier is reinforced by resident macrophages that specifically engulf leaked material. This identifies a distinct role for macrophages as an important component of the BNB acting to protect the PNS environment with implications for improving therapeutic delivery to this tissue.
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DOI:
10.1007/978-1-60761-938-3_6
发表时间:
2011-01-01
期刊:
BLOOD-BRAIN AND OTHER NEURAL BARRIERS: REVIEWS AND PROTOCOLS
影响因子:
--
作者:
Weerasuriya, Ananda;Mizisin, Andrew P.
通讯作者:
Mizisin, Andrew P.
DOI:
10.1073/pnas.1120800109
发表时间:
2012-07-17
影响因子:
11.1
作者:
Hackel, Dagmar;Krug, Susanne M.;Rittner, Heike L.
通讯作者:
Rittner, Heike L.
影响因子:
56.9
作者:
Segarra, Marta;Aburto, Maria R.;Acker-Palmer, Amparo
通讯作者:
Acker-Palmer, Amparo
影响因子:
13.9
作者:
Andreone BJ;Lacoste B;Gu C
通讯作者:
Gu C
DOI:
10.1242/dev.170316
发表时间:
2018-12-14
期刊:
Development (Cambridge, England)
影响因子:
--
作者:
Stierli S;Napoli I;White IJ;Cattin AL;Monteza Cabrejos A;Garcia Calavia N;Malong L;Ribeiro S;Nihouarn J;Williams R;Young KM;Richardson WD;Lloyd AC
通讯作者:
Lloyd AC