Daley M D, Berinstein N L, Siminovitch K A
Department of Medicine, University of Toronto, Canada.
Clin Invest Med. 1994 Dec;17(6):522-30.
To elucidate the genetic origins of human B-cell lymphomas, we have used northern analysis to establish the profile of immunoglobulin heavy chain variable region (VH) gene utilization in 14 Burkitt's and 10 large cell lymphomas. Our results indicate that the pattern of VH gene subgroup expression in these tumors is similar to the distribution of VH subgroups utilized in the normal repertoire of adult peripheral blood B cells. This finding suggests that these 2 types of lymphomas originate from a relatively diverse population of B cells and that antigenic drive, at least by a single antigen species, does not represent a major etiologic factor in the genesis of this class of B-cell neoplasms. However, the utilization of genes from the VH3 subgroup by 65% of the lymphomas examined in this study raises the possibility that antibodies directed against conserved VH3 subgroup determinant(s) may be of value in treating at least some affected individuals.
为阐明人类B细胞淋巴瘤的遗传起源,我们运用Northern印迹分析来确定14例伯基特淋巴瘤和10例大细胞淋巴瘤中免疫球蛋白重链可变区(VH)基因的使用情况。我们的结果表明,这些肿瘤中VH基因亚组的表达模式与成人外周血B细胞正常库中使用的VH亚组分布相似。这一发现提示,这两种类型的淋巴瘤起源于相对多样化的B细胞群体,并且抗原驱动,至少由单一抗原种类引起的抗原驱动,并非这类B细胞肿瘤发生的主要病因。然而,本研究中65%的淋巴瘤使用了VH3亚组的基因,这增加了针对保守的VH3亚组决定簇的抗体可能对治疗至少部分患者有价值的可能性。