ArticleMethods in molecular biology (Clifton, N.J.)2025
Laser-Based Microdissection of Single Cells from Tissue Sections and PCR Analysis of Rearranged Immunoglobulin Genes from Isolated Normal and Malignant Human B Cells.
Article in Methods in molecular biology (Clifton, N.J.), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Normal and malignant B cells carry rearranged immunoglobulin (Ig) variable region genes, which due to their practically limitless diversity represent ideal clonal markers for these cells. We describe here an approach to isolate single cells from frozen tissue sections by microdissection using a laser-based method. From the DNA of the isolated cells, rearranged IgH and Igκ genes are amplified in a semi-nested PCR approach, using a collection of IGV gene subgroup-specific primers recognizing nearly all IGV genes together with primers for the J genes. By sequence analysis of IGV region genes from distinct cells, the clonal relationship of the B-lineage cells can unequivocally be determined and related to the histological distribution of the cells. The approach is also useful to determine V, D and J gene usage. Moreover, the presence and pattern of somatic IGV gene mutations give valuable insight into the differentiation stage of the B cells.
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