Gurney M E, Apatoff B R, Heinrich S P
J Cell Biol. 1986 Jun;102(6):2264-72. doi: 10.1083/jcb.102.6.2264.
After the partial denervation or paralysis of a muscle, the remaining motor axon terminals may sprout fine, neuritic processes (terminal sprouts) which escape the endplate region of the neuromuscular junction. We previously identified a muscle-derived, protein antigen of 56,000 daltons (56 kD) which plays a necessary role in terminal sprouting. A panel of monoclonal antibodies have been produced against the 56-kD antigen, some of which also partially suppress motor axon terminal sprouting. These monoclonal antibodies define at least two different epitopes upon the surface of the antigen, one of which is necessary for it to effect its biological role in vivo.
肌肉发生部分去神经支配或麻痹后,剩余的运动轴突终末可能会长出纤细的神经突样突起(终末芽),这些突起会避开神经肌肉接头的终板区域。我们之前鉴定出一种分子量为56,000道尔顿(56 kD)的肌肉源性蛋白质抗原,它在终末芽形成过程中发挥着必要作用。现已制备出一组针对该56-kD抗原的单克隆抗体,其中一些抗体也能部分抑制运动轴突终末的芽生。这些单克隆抗体确定了抗原表面至少两个不同的表位,其中一个表位是其在体内发挥生物学作用所必需的。