本研究分析324例小儿兔性白血病细胞的免疫球蛋白重链基因和 kappa 轻链基因的变化.结果显示:(1)免疫球蛋白基因的变化具有 B 淋巴细胞系特导性.(2)kappa 基因的重排或缺失常见于前一前B 细胞和前 B 细胞性血病.(3)急性未分化性白血病...本研究分析324例小儿兔性白血病细胞的免疫球蛋白重链基因和 kappa 轻链基因的变化.结果显示:(1)免疫球蛋白基因的变化具有 B 淋巴细胞系特导性.(2)kappa 基因的重排或缺失常见于前一前B 细胞和前 B 细胞性血病.(3)急性未分化性白血病都因具有重链基因重排,提示已定向进入 B 淋巴细胞.(4)部分白血病细胞呈寡克隆性恶性增殖.(5)一例表型当前一前 B 细胞性白血病 kappa 基因重排。展开更多
Using Southern blot, Northern blot and Quick blot methods, we examined the rearrangement and expression of TCR βgene in four early differentiation stage cell lines from human hemopoietic system, namely HL-60, Jurkat,...Using Southern blot, Northern blot and Quick blot methods, we examined the rearrangement and expression of TCR βgene in four early differentiation stage cell lines from human hemopoietic system, namely HL-60, Jurkat, Daudi and Raji cells as well as lymphocytes from 17 acute lymphocytic leukemia （ALL） patients. The results showed. Ⅰ) Rearrangement of TCR βgene was seen in Jurkat cells. A germline pattern was observed in HL-60, Daudi and Raji cells. 2) Eight of 9 patients with T-ALL had cells with rearranged TCR βgene. But two of 3 patients with B-ALL and three of 5 patients with nonT, nonB-ALL also had cells with rearranged TCR βgene. 3) A 1.3 kb full-length transcript and a 1.0 kb truncated transcript were detected in Jurkat cells by probing with <sup>32</sup>P-TCR βcDNA. But some leukemic B cells also expressed an incompleted transcript. 4) TCR βmRNA was detected in six of 8 patients with T-ALL, four of 5 patients with nonT, nonB-ALL and one of 3 patients with B-ALL. But the level of expression was quite differ ent. The dual-rearrangement and the abnormal expression may give us a new clue for researching leukemogenesis.展开更多
文摘本研究分析324例小儿兔性白血病细胞的免疫球蛋白重链基因和 kappa 轻链基因的变化.结果显示:(1)免疫球蛋白基因的变化具有 B 淋巴细胞系特导性.(2)kappa 基因的重排或缺失常见于前一前B 细胞和前 B 细胞性血病.(3)急性未分化性白血病都因具有重链基因重排,提示已定向进入 B 淋巴细胞.(4)部分白血病细胞呈寡克隆性恶性增殖.(5)一例表型当前一前 B 细胞性白血病 kappa 基因重排。
文摘Using Southern blot, Northern blot and Quick blot methods, we examined the rearrangement and expression of TCR βgene in four early differentiation stage cell lines from human hemopoietic system, namely HL-60, Jurkat, Daudi and Raji cells as well as lymphocytes from 17 acute lymphocytic leukemia （ALL） patients. The results showed. Ⅰ) Rearrangement of TCR βgene was seen in Jurkat cells. A germline pattern was observed in HL-60, Daudi and Raji cells. 2) Eight of 9 patients with T-ALL had cells with rearranged TCR βgene. But two of 3 patients with B-ALL and three of 5 patients with nonT, nonB-ALL also had cells with rearranged TCR βgene. 3) A 1.3 kb full-length transcript and a 1.0 kb truncated transcript were detected in Jurkat cells by probing with <sup>32</sup>P-TCR βcDNA. But some leukemic B cells also expressed an incompleted transcript. 4) TCR βmRNA was detected in six of 8 patients with T-ALL, four of 5 patients with nonT, nonB-ALL and one of 3 patients with B-ALL. But the level of expression was quite differ ent. The dual-rearrangement and the abnormal expression may give us a new clue for researching leukemogenesis.
