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EnglishA combination of molecular genotyping and protein biochemistry methods was used to assess the HLA-A, -B, -C genotyping and expression of six tumor cell lines. Four cell lines had been previously HLA typed by conventional serologic methods. Two could not be typed by serology because deficient in the surface expression of HLA-A, -B, -C molecules. As shown herein, all the 25 alleles carried by the six tested cell lines were typed at the DNA level. In addition, discrepancies between the previous serologic and the present DNA typing results were detected in 9 of the 21 tested serologic specificities. Typing at the protein level by isoelectric focusing and allele-specific monoclonal antibodies confirmed the DNA typing data. Our results exemplify the limits of the serologic typing procedures and demonstrate that molecular methods are highly desirable to conduct functional experiments and identify HLA losses in neoplastic cells at single allele level.
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| Titolo: | HLA-A, -B, -C genotyping and expression in human nonlymphoid tumor cell lines |
| Autori: | |
| Data di pubblicazione: | 1999 |
| Rivista: | |
| Handle: | http://hdl.handle.net/11573/408454 |
| Appartiene alla tipologia: | 01a Articolo in rivista |
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