The mouse severe combined immune deficiency (scid) mutation is closely linked to the B-cell-specific developmental genes VpreB and lambda 5
- PMID: 8100803
- DOI: 10.1006/geno.1993.1256
The mouse severe combined immune deficiency (scid) mutation is closely linked to the B-cell-specific developmental genes VpreB and lambda 5
Abstract
The mouse severe combined immune deficiency (scid) phenotype is due to a recessive, autosomal mutation which results in failed development of lymphocytes. An important step during normal lymphocyte development is the germline rearrangement of DNA segments to assemble functional immunoglobulin or T cell receptor genes. scid lymphocytes fail to rearrange these genes properly, resulting in the absence of mature B and T lymphocytes. This mutation was originally mapped to chromosome 16 by linkage to the immunoglobulin lambda light chain genes (Igl-1) and the coat color mutation mahoganoid. We have typed 288 progeny from backcrosses between MOLF/Ei or CAST/Ei and C.B-17-scid for the scid phenotype and nine other loci mapped to the centromeric region of MMU16. We have established a refined map of this region which places the scid gene between Prm-2 and Igl-1. In addition, no recombinations were found between scid and three other loci, VpreB, lambda 5, and D16Mit31, providing markers useful for isolating the scid gene by positional cloning.
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