A post-transcriptional regulatory mechanism restricts expression of the paraneoplastic cerebellar degeneration antigen cdr2 to immune privileged tissues Journal Article
| Authors: | Corradi, J. P.; Yang, C.; Darnell, J. C.; Dalmau, J.; Darnell, R. B. |
| Article Title: | A post-transcriptional regulatory mechanism restricts expression of the paraneoplastic cerebellar degeneration antigen cdr2 to immune privileged tissues |
| Abstract: | Paraneoplastic cerebellar degeneration (PCD) is believed to be an autoimmune disorder initiated by the ectopic expression of a neuron-specific protein in breast and ovarian tumors. PCD antisera was used previously to identify several cerebellar degeneration-related (cdr) genes encoding putative PCD antigens. We have found that the cdr2 gene, which encodes a cytoplasmic leucine zipper protein of unknown function, is expressed in PCD- associated tumors, whereas other cdr genes are not; thus, cdr2 encodes the PCD tumor antigen. To determine whether the expression pattern of cdr2 is consistent with its proposed role in PCD, we have isolated the mouse homolog and examined both the mRNA and protein distribution in adult tissues. We have found that cdr2 mRNA is expressed in almost all tissues, whereas the protein is expressed only in the brain and testis. Within the brain, both the cdr2 mRNA and immunoreactivity are confined primarily to neurons in the cerebellum and brainstem, the regions most affected in PCD. These results suggest first that the tissue-specific expression of cdr2 is regulated at a post- transcriptional level. Moreover, because the brain and testis are considered to be immune-privileged sites, the expression pattern of cdr2 is compatible with the autoimmune model of PCD pathogenesis. |
| Keywords: | unclassified drug; dna-binding proteins; nonhuman; ovarian neoplasms; mouse; animals; mice; animal tissue; cerebellum; gene expression; transcription, genetic; tumor antigen; gene expression regulation; amino acid sequence; molecular sequence data; protein processing, post-translational; brain; rna, messenger; base sequence; paraneoplastic syndrome; brain stem; testis; nerve degeneration; cerebellar degeneration; leucine zipper protein; cerebellar diseases; translational regulation; paraneoplastic syndromes; cerebellum degeneration; humans; male; female; priority journal; article; immune privilege; neuron-specific gene expression; paraneoplastic neurological disease; tumor antigen cdr 2 |
| Journal Title: | The Journal of Neuroscience |
| Volume: | 17 |
| Issue: | 4 |
| ISSN: | 0270-6474 |
| Publisher: | Society for Neuroscience |
| Date Published: | 1997-02-15 |
| Start Page: | 1406 |
| End Page: | 1415 |
| Language: | English |
| PUBMED: | 9006982 |
| PROVIDER: | scopus |
| DOI/URL: | |
| Notes: | Article -- Export Date: 17 March 2017 -- Source: Scopus |
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