Abstract
The basal lamina in the synaptic cleft of the vertebrate skeletal neuromuscular junction contains molecules that direct the formation of synaptic specializations in regenerating axons and muscle fibres1–4. We have undertaken a series of experiments aimed at identifying and characterizing the molecules responsible for the formation of one of these specializations, the aggregates of acetylcholine receptors (AChRs) in the muscle fibre plasma membrane. We began by preparing an insoluble, basal lamina-containing fraction from Torpedo californica electric organ, a tissue which has a far higher concentration of cholinergic synapses than muscle, and showing that this fraction caused AChRs on cultured chick myotubes to aggregate5–7. A critical step is learning whether or not the electric organ factor is similar to the receptor-aggregating molecule in the basal lamina at the neuromuscular junction. The importance of this problem is emphasized by reports that clearly non-physiological agents, such as positively charged latex beads8, can cause AChR aggregation on cultured muscle cells. We have already shown that Torpedo muscle contains an AChR-aggregating factor similar to that of electric organ, although in much lower amounts6. Here we demonstrate, using monoclonal antibodies, that the AChR-aggregating factor in our extracts of electric organ is, in fact, antigenically related to molecules concentrated in the synaptic cleft at the neuromuscular junction.
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References
Sanes, J. R., Marshall, L. M. & McMahan, U. J. J. Cell Biol. 78, 176–198 (1978).
Burden, S. J., Sargent, P. B. & McMahan, U. J. J. Cell Biol. 82, 412–425 (1979).
McMahan, U. J. & Slater, C. R. J. Cell Biol. 98, 1453–1473 (1984).
Anglister, L. & McMahan, U. J. Soc. Neurosci. Abstr. 10, Pt 1, 281 (1984).
Rubin, L. L., Gordon, A. S. & McMahan, U. J. Soc. Neurosci. Abstr. 6, 330 (1980).
Godfrey, E. W., Nitkin, R. M., Wallace, B. G., Rubin, L. L. & McMahan, U. J. J. Cell Biol. 99, 615–627 (1984).
Nitkin, R. M., Wallace, B. G., Spira, M. E., Godfrey, E. W. & McMahan, U. J. Cold Spring Harb. Symp. quant. Biol. 48, 653–665 (1983).
Peng, H. B. & Cheng, P.-C. J. Neurosci. 2, 1760–1774 (1982).
Timpl, R. et al. J. biol. Chem. 254, 9933–9937 (1979).
Sanes, J. R. J. Cell Biol. 93, 442–451 (1982).
Christian, C. M. et al. Proc. natn. Acad. Sci. U.S.A. 75, 4011–4105 (1978).
Bauer, H. C. et al. Brain Res. 209, 395–404 (1981).
Kalcheim, C., Vogel, Z. & Duksin, D. Proc. natn. Acad. Sci. U.S.A. 79, 3077–3081 (1982).
Podleski, T. R. et al. Proc. natn. Acad. Sci. U.S.A. 75, 2035–2039 (1978).
Jessell, T. M., Siegel, R. E. & Fischbach, G. D. Proc. natn. Acad. Sci. U.S.A. 76, 5397–5401 (1979).
Markelonis, G. J., Oh, T. H., Eldefrawi, M. E. & Guth, L. Devl Biol. 89, 353–361 (1982).
Sanes, J. R., Feldman, D. H., Cheney, J. M. & Lawrence, J. C. Jr J. Neurosci. 4, 464–473 (1984).
McMahan, U. J., Sanes, J. R. & Marshall, L. M. Nature 271, 172–174 (1978).
Anderson, M. J. & Fambrough, D. M. J. Cell Biol. 97, 1396–1411 (1983).
Sanes, J. R. & Hall, Z. W. J. Cell Biol. 83, 357–370 (1979).
Vogel, Z. et al. J. Neurosci. 3, 1058–1068 (1983).
Wallace, B. G. et al. Nature 315, 574–577 (1985).
Oi, V. T. & Herzenberg, L. A. in Selected Methods in Cellular Immunology (eds Mishell, B. B. & Shiigi, S. M.) 351–372 (Freeman, San Francisco, 1980).
Zacks, S. I. The Motor Endplate (Krieger, Huntington, 1973).
Sealock, R. & Kavookjian, A. Brain Res. 190, 81–93 (1980).
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Fallon, J., Nitkin, R., Reist, N. et al. Acetylcholine receptor-aggregating factor is similar to molecules concentrated at neuromuscular junctions. Nature 315, 571–574 (1985). https://doi.org/10.1038/315571a0
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DOI: https://doi.org/10.1038/315571a0
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