An unbiased analysis of V(H)-D-J(H) sequences from B-1a, B-1b, and conventional B cells
| Autor: | A B Kantor, C E Merrill, L A Herzenberg, J L Hillson |
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| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | The Journal of Immunology. 158:1175-1186 |
| ISSN: | 1550-6606 0022-1767 |
| DOI: | 10.4049/jimmunol.158.3.1175 |
| Popis: | Previous studies conclude that the repertoire of B-1a (CD5+ B) cells is highly restricted. Studies here, which use FACS sorting and single-cell PCR methodology to develop an unbiased representation of the IgH repertoires of B-1a, B-1b, and conventional B cells from the peritoneal cavity, demonstrate that the B-1a cell repertoire is more diverse than previously thought. Furthermore, adult B-1a cells have significantly fewer noncoded nucleotide (N) insertions than conventional B cells. However, B-1a cells are not defined by the absence of these regions, since such insertions are present in two-thirds of B-1a cell transcripts. All three B cell populations use a wide spectrum of V(H), D, and J(H) elements and display considerable diversity in complementarity-determining region 3 (CDR3). However, characteristic differences in the repertoires of all three B cell populations also exist, suggesting different selective and/or developmental forces act to shape each repertoire. |
| Databáze: | OpenAIRE |
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