Stable transfection of the NR1 subunit in Chinese hamster ovary cells fails to produce a functional N-methyl-D-aspartate receptor
- PMID: 7936412
- DOI: 10.1016/0304-3940(94)90180-5
Stable transfection of the NR1 subunit in Chinese hamster ovary cells fails to produce a functional N-methyl-D-aspartate receptor
Abstract
The NR1 subunit of the N-methyl-D-aspartate (NMDA) receptor cDNA was stably transfected into Chinese hamster ovary (CHO) cells. Northern analysis revealed 3 clonal cell lines expressing high levels of NMDAR1 mRNA (BA1, BA2 and BA3). NMDAR1 protein was readily detected by Western analysis in only one of the clonal populations, BA1. Whole-cell patch clamp analysis revealed a lack of functional NMDA receptors in all of the cell lines, including BA1. NMDA-mediated responses were obtained only after a second subunit, NMDAR2A, was transiently expressed in BA1 cells. Therefore, the NR1 subunit alone may not be sufficient to form functional NMDA receptors in CHO cells.
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