Genetic analysis of Laminin A in Drosophila: extracellular matrix containing laminin A is required for ocellar axon pathfinding.
Genetic analysis of Laminin A in Drosophila: extracellular matrix containing laminin A is required for ocellar axon pathfinding.
复制标题
果蝇层粘连蛋白 A 的遗传分析:眼轴突寻路需要含有层粘连蛋白 A 的细胞外基质。
作者:
L. Garcia;R. Fetter;C. Goodman
Genetic analysis of the Laminin A (LamA) gene in Drosophila reveals that distinct classes of sensory axons have different requirements for extracellular matrix (ECM) containing laminin A versus epithelial cell surfaces. In the eye-antenna imaginal disc, the nerve from the three simple eyes (ocelli) to the brain is pioneered by a population of transient ocellar neurons whose axons extend on an ECM that covers and connects the disc epithelium and brain. Axons from neighboring mechanosensory (bristle) neurons extend under the ECM in direct contact with the surface of the disc cells, and pioneer a different axon pathway that enters the brain in a different location. In LamA mutants, the ocellar pioneer axons display striking pathfinding defects, while neighboring bristle axons appear normal; the ocellar pioneers usually extend in the proper direction, adhering to the epithelium and sometimes fasciculating with mechanosensory axons, but they invariably fail to reach the brain.
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DOI:
10.1073/pnas.87.9.3264
发表时间:
1990-05-01
影响因子:
11.1
作者:
EHRIG, K;LEIVO, I;ENGVALL, E
通讯作者:
ENGVALL, E
影响因子:
2.7
作者:
LETOURNEAU, PC;MADSEN, AM;FURCHT, LT
通讯作者:
FURCHT, LT
影响因子:
11.4
作者:
KUSCHEGULLBERG, M;GARRISON, K;FESSLER, JH
通讯作者:
FESSLER, JH
影响因子:
1.9
作者:
Stark,WS;Sapp,R;Carlson,SD
通讯作者:
Carlson,SD