Coordinate control of axon defasciculation and myelination by laminin-2 and -8.
Coordinate control of axon defasciculation and myelination by laminin-2 and -8.
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DOI:
10.1083/jcb.200411158
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发表时间:
2005-02-14
期刊:
影响因子:
--
通讯作者:
Patton BL
中科院分区:
文献类型:
--
作者:
Yang D;Bierman J;Tarumi YS;Zhong YP;Rangwala R;Proctor TM;Miyagoe-Suzuki Y;Takeda S;Miner JH;Sherman LS;Gold BG;Patton BL
Schwann cells form basal laminae (BLs) containing laminin-2 (Ln-2; heterotrimer α2β1γ1) and Ln-8 (α4β1γ1). Loss of Ln-2 in humans and mice carrying α2-chain mutations prevents developing Schwann cells from fully defasciculating axons, resulting in partial amyelination. The principal pathogenic mechanism is thought to derive from structural defects in Schwann cell BLs, which Ln-2 scaffolds. However, we found loss of Ln-8 caused partial amyelination in mice without affecting BL structure or Ln-2 levels. Combined Ln-2/Ln-8 deficiency caused nearly complete amyelination, revealing Ln-2 and -8 together have a dominant role in defasciculation, and that Ln-8 promotes myelination without BLs. Transgenic Ln-10 (α5β1γ1) expression also promoted myelination without BL formation. Rather than BL structure, we found Ln-2 and -8 were specifically required for the increased perinatal Schwann cell proliferation that attends myelination. Purified Ln-2 and -8 directly enhanced in vitro Schwann cell proliferation in collaboration with autocrine factors, suggesting Lns control the onset of myelination by modulating responses to mitogens in vivo.
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影响因子:
4
作者:
LALOR, PA;MAPP, PI;REVELL, PA
通讯作者:
REVELL, PA
DOI:
10.1097/00005072-197511000-00006
发表时间:
1975-01-01
影响因子:
3.2
作者:
BRAY, GM;AGUAYO, AJ
通讯作者:
AGUAYO, AJ
影响因子:
9.2
作者:
Colognato, H;Yurchenco, PD
通讯作者:
Yurchenco, PD
影响因子:
6.2
作者:
Nakagawa, M;Miyagoe-Suzuki, Y;Takeda, S
通讯作者:
Takeda, S
DOI:
10.1083/jcb.200109021
发表时间:
2002-01-07
期刊:
The Journal of cell biology
影响因子:
--
作者:
Feltri ML;Graus Porta D;Previtali SC;Nodari A;Migliavacca B;Cassetti A;Littlewood-Evans A;Reichardt LF;Messing A;Quattrini A;Mueller U;Wrabetz L
通讯作者:
Wrabetz L