一株新的急性髓系白血病细胞系SH-2的建立及其鉴定

Objective To establish and characterize a novel human myeloid leukemia cell line SH-2. Methods Bone marrow mononuclear cells(BMMNC) isolated from a AML-M2 patient, who failed to ob-tain complete remission after chemotherapy and allogenic bone marrow transplantation were passed in a long term IMDM culture medium supplemented with 20% fetal calf serum. Stromal cells were retained and rh-IL-3was added in the culture system. A new human myeloid leukemia cell line SH-2 was successfully established with a cytogeuetic characteristics of a loss of Y chromosome(- Y), a derivative chromosome 16 resulting from unbalanced translocation between chromosome 16 and 17, monosome 17, trisomy 19 and p53 alteration. Vari-ous methods were employed to characterize SH-2 cell line. Results SH-2 cells has been maintained without cytokine and stromal cells for more than 3 years without EB virus and mycoplasma contamination. SH-2 cells had the basically same morphological, immunophenotypic and cytogenetic features as the patient' s leukemia cells did, such as myeloid morphology, an immunophenotype of CD13+ , CD33+ , CD56+ , CD16/56+ and a hypodiploid karyotype of 45, X, - Y, der(16) t(16;17) (q24;q12) , - 17, + 19, which were gradually de-creased and replaced by the near-tetraploid cells with a karyotype of 73 - 102 (80), XX, - Y, - Y, del (lq31) ×2, der(16)t(16;17) (q24;q12) ×2, - 17, - 17, + 19, + 19. FISH and multiple FISH delineated all the abnormalities and revealed a loss of one p53 allele due to monosomy 17. DNA direct sequencing detec-ted a point mutation of CAG to CAT at codon 576 of exon 5 in another p53 allele. RT-PCR showed that SH-2 cells expressed apoptosis-related genes (bcl-2, Fas, GST- π and p21) rather than MDR-related genes. Short tandem repeat PCR provided powerful evidence for the derivation of SH-2 cell line from the patient' s leukemia cells. SH-2 cells had certain colony formation and tumorigenic capacities in nude and SCID mice. Conclu-sion SH-2 is a new myeloid leukemia cell line with a unique biology background, and will provide a useful tool for leukemia research.     

一株新的急性髓系白血病细胞系SH-2的建立及其鉴定

Objective To establish and characterize a novel human myeloid leukemia cell line SH-2. Methods Bone marrow mononuclear cells(BMMNC) isolated from a AML-M2 patient, who failed to ob-tain complete remission after chemotherapy and allogenic bone marrow transplantation were passed in a long term IMDM culture medium supplemented with 20% fetal calf serum. Stromal cells were retained and rh-IL-3was added in the culture system. A new human myeloid leukemia cell line SH-2 was successfully established with a cytogeuetic characteristics of a loss of Y chromosome(- Y), a derivative chromosome 16 resulting from unbalanced translocation between chromosome 16 and 17, monosome 17, trisomy 19 and p53 alteration. Vari-ous methods were employed to characterize SH-2 cell line. Results SH-2 cells has been maintained without cytokine and stromal cells for more than 3 years without EB virus and mycoplasma contamination. SH-2 cells had the basically same morphological, immunophenotypic and cytogenetic features as the patient' s leukemia cells did, such as myeloid morphology, an immunophenotype of CD13+ , CD33+ , CD56+ , CD16/56+ and a hypodiploid karyotype of 45, X, - Y, der(16) t(16;17) (q24;q12) , - 17, + 19, which were gradually de-creased and replaced by the near-tetraploid cells with a karyotype of 73 - 102 (80), XX, - Y, - Y, del (lq31) ×2, der(16)t(16;17) (q24;q12) ×2, - 17, - 17, + 19, + 19. FISH and multiple FISH delineated all the abnormalities and revealed a loss of one p53 allele due to monosomy 17. DNA direct sequencing detec-ted a point mutation of CAG to CAT at codon 576 of exon 5 in another p53 allele. RT-PCR showed that SH-2 cells expressed apoptosis-related genes (bcl-2, Fas, GST- π and p21) rather than MDR-related genes. Short tandem repeat PCR provided powerful evidence for the derivation of SH-2 cell line from the patient' s leukemia cells. SH-2 cells had certain colony formation and tumorigenic capacities in nude and SCID mice. Conclu-sion SH-2 is a new myeloid leukemia cell line with a unique biology background, and will provide a useful tool for leukemia research.     

一株新的急性髓系白血病细胞系SH-2的建立及其鉴定

Objective To establish and characterize a novel human myeloid leukemia cell line SH-2. Methods Bone marrow mononuclear cells(BMMNC) isolated from a AML-M2 patient, who failed to ob-tain complete remission after chemotherapy and allogenic bone marrow transplantation were passed in a long term IMDM culture medium supplemented with 20% fetal calf serum. Stromal cells were retained and rh-IL-3was added in the culture system. A new human myeloid leukemia cell line SH-2 was successfully established with a cytogeuetic characteristics of a loss of Y chromosome(- Y), a derivative chromosome 16 resulting from unbalanced translocation between chromosome 16 and 17, monosome 17, trisomy 19 and p53 alteration. Vari-ous methods were employed to characterize SH-2 cell line. Results SH-2 cells has been maintained without cytokine and stromal cells for more than 3 years without EB virus and mycoplasma contamination. SH-2 cells had the basically same morphological, immunophenotypic and cytogenetic features as the patient' s leukemia cells did, such as myeloid morphology, an immunophenotype of CD13+ , CD33+ , CD56+ , CD16/56+ and a hypodiploid karyotype of 45, X, - Y, der(16) t(16;17) (q24;q12) , - 17, + 19, which were gradually de-creased and replaced by the near-tetraploid cells with a karyotype of 73 - 102 (80), XX, - Y, - Y, del (lq31) ×2, der(16)t(16;17) (q24;q12) ×2, - 17, - 17, + 19, + 19. FISH and multiple FISH delineated all the abnormalities and revealed a loss of one p53 allele due to monosomy 17. DNA direct sequencing detec-ted a point mutation of CAG to CAT at codon 576 of exon 5 in another p53 allele. RT-PCR showed that SH-2 cells expressed apoptosis-related genes (bcl-2, Fas, GST- π and p21) rather than MDR-related genes. Short tandem repeat PCR provided powerful evidence for the derivation of SH-2 cell line from the patient' s leukemia cells. SH-2 cells had certain colony formation and tumorigenic capacities in nude and SCID mice. Conclu-sion SH-2 is a new myeloid leukemia cell line with a unique biology background, and will provide a useful tool for leukemia research.     

一株新的急性髓系白血病细胞系SH-2的建立及其鉴定

Objective To establish and characterize a novel human myeloid leukemia cell line SH-2. Methods Bone marrow mononuclear cells(BMMNC) isolated from a AML-M2 patient, who failed to ob-tain complete remission after chemotherapy and allogenic bone marrow transplantation were passed in a long term IMDM culture medium supplemented with 20% fetal calf serum. Stromal cells were retained and rh-IL-3was added in the culture system. A new human myeloid leukemia cell line SH-2 was successfully established with a cytogeuetic characteristics of a loss of Y chromosome(- Y), a derivative chromosome 16 resulting from unbalanced translocation between chromosome 16 and 17, monosome 17, trisomy 19 and p53 alteration. Vari-ous methods were employed to characterize SH-2 cell line. Results SH-2 cells has been maintained without cytokine and stromal cells for more than 3 years without EB virus and mycoplasma contamination. SH-2 cells had the basically same morphological, immunophenotypic and cytogenetic features as the patient' s leukemia cells did, such as myeloid morphology, an immunophenotype of CD13+ , CD33+ , CD56+ , CD16/56+ and a hypodiploid karyotype of 45, X, - Y, der(16) t(16;17) (q24;q12) , - 17, + 19, which were gradually de-creased and replaced by the near-tetraploid cells with a karyotype of 73 - 102 (80), XX, - Y, - Y, del (lq31) ×2, der(16)t(16;17) (q24;q12) ×2, - 17, - 17, + 19, + 19. FISH and multiple FISH delineated all the abnormalities and revealed a loss of one p53 allele due to monosomy 17. DNA direct sequencing detec-ted a point mutation of CAG to CAT at codon 576 of exon 5 in another p53 allele. RT-PCR showed that SH-2 cells expressed apoptosis-related genes (bcl-2, Fas, GST- π and p21) rather than MDR-related genes. Short tandem repeat PCR provided powerful evidence for the derivation of SH-2 cell line from the patient' s leukemia cells. SH-2 cells had certain colony formation and tumorigenic capacities in nude and SCID mice. Conclu-sion SH-2 is a new myeloid leukemia cell line with a unique biology background, and will provide a useful tool for leukemia research.     

一株新的急性髓系白血病细胞系SH-2的建立及其鉴定

Objective To establish and characterize a novel human myeloid leukemia cell line SH-2. Methods Bone marrow mononuclear cells(BMMNC) isolated from a AML-M2 patient, who failed to ob-tain complete remission after chemotherapy and allogenic bone marrow transplantation were passed in a long term IMDM culture medium supplemented with 20% fetal calf serum. Stromal cells were retained and rh-IL-3was added in the culture system. A new human myeloid leukemia cell line SH-2 was successfully established with a cytogeuetic characteristics of a loss of Y chromosome(- Y), a derivative chromosome 16 resulting from unbalanced translocation between chromosome 16 and 17, monosome 17, trisomy 19 and p53 alteration. Vari-ous methods were employed to characterize SH-2 cell line. Results SH-2 cells has been maintained without cytokine and stromal cells for more than 3 years without EB virus and mycoplasma contamination. SH-2 cells had the basically same morphological, immunophenotypic and cytogenetic features as the patient' s leukemia cells did, such as myeloid morphology, an immunophenotype of CD13+ , CD33+ , CD56+ , CD16/56+ and a hypodiploid karyotype of 45, X, - Y, der(16) t(16;17) (q24;q12) , - 17, + 19, which were gradually de-creased and replaced by the near-tetraploid cells with a karyotype of 73 - 102 (80), XX, - Y, - Y, del (lq31) ×2, der(16)t(16;17) (q24;q12) ×2, - 17, - 17, + 19, + 19. FISH and multiple FISH delineated all the abnormalities and revealed a loss of one p53 allele due to monosomy 17. DNA direct sequencing detec-ted a point mutation of CAG to CAT at codon 576 of exon 5 in another p53 allele. RT-PCR showed that SH-2 cells expressed apoptosis-related genes (bcl-2, Fas, GST- π and p21) rather than MDR-related genes. Short tandem repeat PCR provided powerful evidence for the derivation of SH-2 cell line from the patient' s leukemia cells. SH-2 cells had certain colony formation and tumorigenic capacities in nude and SCID mice. Conclu-sion SH-2 is a new myeloid leukemia cell line with a unique biology background, and will provide a useful tool for leukemia research.     

一株新的急性髓系白血病细胞系SH-2的建立及其鉴定

Objective To establish and characterize a novel human myeloid leukemia cell line SH-2. Methods Bone marrow mononuclear cells(BMMNC) isolated from a AML-M2 patient, who failed to ob-tain complete remission after chemotherapy and allogenic bone marrow transplantation were passed in a long term IMDM culture medium supplemented with 20% fetal calf serum. Stromal cells were retained and rh-IL-3was added in the culture system. A new human myeloid leukemia cell line SH-2 was successfully established with a cytogeuetic characteristics of a loss of Y chromosome(- Y), a derivative chromosome 16 resulting from unbalanced translocation between chromosome 16 and 17, monosome 17, trisomy 19 and p53 alteration. Vari-ous methods were employed to characterize SH-2 cell line. Results SH-2 cells has been maintained without cytokine and stromal cells for more than 3 years without EB virus and mycoplasma contamination. SH-2 cells had the basically same morphological, immunophenotypic and cytogenetic features as the patient' s leukemia cells did, such as myeloid morphology, an immunophenotype of CD13+ , CD33+ , CD56+ , CD16/56+ and a hypodiploid karyotype of 45, X, - Y, der(16) t(16;17) (q24;q12) , - 17, + 19, which were gradually de-creased and replaced by the near-tetraploid cells with a karyotype of 73 - 102 (80), XX, - Y, - Y, del (lq31) ×2, der(16)t(16;17) (q24;q12) ×2, - 17, - 17, + 19, + 19. FISH and multiple FISH delineated all the abnormalities and revealed a loss of one p53 allele due to monosomy 17. DNA direct sequencing detec-ted a point mutation of CAG to CAT at codon 576 of exon 5 in another p53 allele. RT-PCR showed that SH-2 cells expressed apoptosis-related genes (bcl-2, Fas, GST- π and p21) rather than MDR-related genes. Short tandem repeat PCR provided powerful evidence for the derivation of SH-2 cell line from the patient' s leukemia cells. SH-2 cells had certain colony formation and tumorigenic capacities in nude and SCID mice. Conclu-sion SH-2 is a new myeloid leukemia cell line with a unique biology background, and will provide a useful tool for leukemia research.     

一株新的急性髓系白血病细胞系SH-2的建立及其鉴定

Objective To establish and characterize a novel human myeloid leukemia cell line SH-2. Methods Bone marrow mononuclear cells(BMMNC) isolated from a AML-M2 patient, who failed to ob-tain complete remission after chemotherapy and allogenic bone marrow transplantation were passed in a long term IMDM culture medium supplemented with 20% fetal calf serum. Stromal cells were retained and rh-IL-3was added in the culture system. A new human myeloid leukemia cell line SH-2 was successfully established with a cytogeuetic characteristics of a loss of Y chromosome(- Y), a derivative chromosome 16 resulting from unbalanced translocation between chromosome 16 and 17, monosome 17, trisomy 19 and p53 alteration. Vari-ous methods were employed to characterize SH-2 cell line. Results SH-2 cells has been maintained without cytokine and stromal cells for more than 3 years without EB virus and mycoplasma contamination. SH-2 cells had the basically same morphological, immunophenotypic and cytogenetic features as the patient' s leukemia cells did, such as myeloid morphology, an immunophenotype of CD13+ , CD33+ , CD56+ , CD16/56+ and a hypodiploid karyotype of 45, X, - Y, der(16) t(16;17) (q24;q12) , - 17, + 19, which were gradually de-creased and replaced by the near-tetraploid cells with a karyotype of 73 - 102 (80), XX, - Y, - Y, del (lq31) ×2, der(16)t(16;17) (q24;q12) ×2, - 17, - 17, + 19, + 19. FISH and multiple FISH delineated all the abnormalities and revealed a loss of one p53 allele due to monosomy 17. DNA direct sequencing detec-ted a point mutation of CAG to CAT at codon 576 of exon 5 in another p53 allele. RT-PCR showed that SH-2 cells expressed apoptosis-related genes (bcl-2, Fas, GST- π and p21) rather than MDR-related genes. Short tandem repeat PCR provided powerful evidence for the derivation of SH-2 cell line from the patient' s leukemia cells. SH-2 cells had certain colony formation and tumorigenic capacities in nude and SCID mice. Conclu-sion SH-2 is a new myeloid leukemia cell line with a unique biology background, and will provide a useful tool for leukemia research.     

一株新的急性髓系白血病细胞系SH-2的建立及其鉴定

Objective To establish and characterize a novel human myeloid leukemia cell line SH-2. Methods Bone marrow mononuclear cells(BMMNC) isolated from a AML-M2 patient, who failed to ob-tain complete remission after chemotherapy and allogenic bone marrow transplantation were passed in a long term IMDM culture medium supplemented with 20% fetal calf serum. Stromal cells were retained and rh-IL-3was added in the culture system. A new human myeloid leukemia cell line SH-2 was successfully established with a cytogeuetic characteristics of a loss of Y chromosome(- Y), a derivative chromosome 16 resulting from unbalanced translocation between chromosome 16 and 17, monosome 17, trisomy 19 and p53 alteration. Vari-ous methods were employed to characterize SH-2 cell line. Results SH-2 cells has been maintained without cytokine and stromal cells for more than 3 years without EB virus and mycoplasma contamination. SH-2 cells had the basically same morphological, immunophenotypic and cytogenetic features as the patient' s leukemia cells did, such as myeloid morphology, an immunophenotype of CD13+ , CD33+ , CD56+ , CD16/56+ and a hypodiploid karyotype of 45, X, - Y, der(16) t(16;17) (q24;q12) , - 17, + 19, which were gradually de-creased and replaced by the near-tetraploid cells with a karyotype of 73 - 102 (80), XX, - Y, - Y, del (lq31) ×2, der(16)t(16;17) (q24;q12) ×2, - 17, - 17, + 19, + 19. FISH and multiple FISH delineated all the abnormalities and revealed a loss of one p53 allele due to monosomy 17. DNA direct sequencing detec-ted a point mutation of CAG to CAT at codon 576 of exon 5 in another p53 allele. RT-PCR showed that SH-2 cells expressed apoptosis-related genes (bcl-2, Fas, GST- π and p21) rather than MDR-related genes. Short tandem repeat PCR provided powerful evidence for the derivation of SH-2 cell line from the patient' s leukemia cells. SH-2 cells had certain colony formation and tumorigenic capacities in nude and SCID mice. Conclu-sion SH-2 is a new myeloid leukemia cell line with a unique biology background, and will provide a useful tool for leukemia research.     

一株新的急性髓系白血病细胞系SH-2的建立及其鉴定

Objective To establish and characterize a novel human myeloid leukemia cell line SH-2. Methods Bone marrow mononuclear cells(BMMNC) isolated from a AML-M2 patient, who failed to ob-tain complete remission after chemotherapy and allogenic bone marrow transplantation were passed in a long term IMDM culture medium supplemented with 20% fetal calf serum. Stromal cells were retained and rh-IL-3was added in the culture system. A new human myeloid leukemia cell line SH-2 was successfully established with a cytogeuetic characteristics of a loss of Y chromosome(- Y), a derivative chromosome 16 resulting from unbalanced translocation between chromosome 16 and 17, monosome 17, trisomy 19 and p53 alteration. Vari-ous methods were employed to characterize SH-2 cell line. Results SH-2 cells has been maintained without cytokine and stromal cells for more than 3 years without EB virus and mycoplasma contamination. SH-2 cells had the basically same morphological, immunophenotypic and cytogenetic features as the patient' s leukemia cells did, such as myeloid morphology, an immunophenotype of CD13+ , CD33+ , CD56+ , CD16/56+ and a hypodiploid karyotype of 45, X, - Y, der(16) t(16;17) (q24;q12) , - 17, + 19, which were gradually de-creased and replaced by the near-tetraploid cells with a karyotype of 73 - 102 (80), XX, - Y, - Y, del (lq31) ×2, der(16)t(16;17) (q24;q12) ×2, - 17, - 17, + 19, + 19. FISH and multiple FISH delineated all the abnormalities and revealed a loss of one p53 allele due to monosomy 17. DNA direct sequencing detec-ted a point mutation of CAG to CAT at codon 576 of exon 5 in another p53 allele. RT-PCR showed that SH-2 cells expressed apoptosis-related genes (bcl-2, Fas, GST- π and p21) rather than MDR-related genes. Short tandem repeat PCR provided powerful evidence for the derivation of SH-2 cell line from the patient' s leukemia cells. SH-2 cells had certain colony formation and tumorigenic capacities in nude and SCID mice. Conclu-sion SH-2 is a new myeloid leukemia cell line with a unique biology background, and will provide a useful tool for leukemia research.     

一株新的急性髓系白血病细胞系SH-2的建立及其鉴定

Objective To establish and characterize a novel human myeloid leukemia cell line SH-2. Methods Bone marrow mononuclear cells(BMMNC) isolated from a AML-M2 patient, who failed to ob-tain complete remission after chemotherapy and allogenic bone marrow transplantation were passed in a long term IMDM culture medium supplemented with 20% fetal calf serum. Stromal cells were retained and rh-IL-3was added in the culture system. A new human myeloid leukemia cell line SH-2 was successfully established with a cytogeuetic characteristics of a loss of Y chromosome(- Y), a derivative chromosome 16 resulting from unbalanced translocation between chromosome 16 and 17, monosome 17, trisomy 19 and p53 alteration. Vari-ous methods were employed to characterize SH-2 cell line. Results SH-2 cells has been maintained without cytokine and stromal cells for more than 3 years without EB virus and mycoplasma contamination. SH-2 cells had the basically same morphological, immunophenotypic and cytogenetic features as the patient' s leukemia cells did, such as myeloid morphology, an immunophenotype of CD13+ , CD33+ , CD56+ , CD16/56+ and a hypodiploid karyotype of 45, X, - Y, der(16) t(16;17) (q24;q12) , - 17, + 19, which were gradually de-creased and replaced by the near-tetraploid cells with a karyotype of 73 - 102 (80), XX, - Y, - Y, del (lq31) ×2, der(16)t(16;17) (q24;q12) ×2, - 17, - 17, + 19, + 19. FISH and multiple FISH delineated all the abnormalities and revealed a loss of one p53 allele due to monosomy 17. DNA direct sequencing detec-ted a point mutation of CAG to CAT at codon 576 of exon 5 in another p53 allele. RT-PCR showed that SH-2 cells expressed apoptosis-related genes (bcl-2, Fas, GST- π and p21) rather than MDR-related genes. Short tandem repeat PCR provided powerful evidence for the derivation of SH-2 cell line from the patient' s leukemia cells. SH-2 cells had certain colony formation and tumorigenic capacities in nude and SCID mice. Conclu-sion SH-2 is a new myeloid leukemia cell line with a unique biology background, and will provide a useful tool for leukemia research.     

二例伴有dic(9;20)(p11-13;q11)急性淋巴细胞白血病患者的临床和实验研究

目的探讨伴有dic（9;20）（p11-13;q11）的急性淋巴细胞白血病（ALL）的细胞形态学、免疫学、细胞遗传学特征和临床特点.方法骨髓细胞经直接法和24h短期培养后按常规方法制备染色体,采用R显带技术进行细胞遗传学分析.分别以9号和20号染色体着丝粒探针进行双色荧光原位杂交（FISH）检测.结果2例患者的临床和血液学改变符合ALL诊断,免疫表型分析B淋系标志阳性（CD10＋、HLA-DR＋）;染色体核型分析显示2例患者均为dic（9;20）：例1为45,XY,der（9）t（9;20）（p11;q11）,-20[20],例2为45,XX,der（9）t（9;20）（p13;q11）,t（9;22）（q34;q11）,-20[10]/46,idem,＋8[16]/47,idem,＋8,＋21[14];其中1例经双色FISH检测证实9号和20号染色体之间发生了相互易位,且形成双着丝粒染色体.结论dic（9;20）（p11-13;q11）是一种少见的重现性核型异常,可能和ALL有特殊的联系.FISH技术是检测该易位的可靠手段.     

染色体t(8;21)急性髓系白血病cCD79a/cCD22的异常表达

目的报道新发现的4例cCD79a／cCD22异常表达的t（8；21）急性髓系白血病（AML）。方法分析4例患者的细胞形态学、免疫学、细胞遗传学、分子生物学（MICM）分型及临床特征。结果伴cCD79a／cCD22表达的t（8；21）（q22；q22）的AML特点：①无显著的性别差异；②发病年龄较轻；③可有髓外浸润；④外周血白细胞计数不增高；⑤骨髓细胞形态学显示为粒细胞白血病，且原始细胞显著增多；⑥免疫表型均为B淋巴系和髓系共表达，CD34表达阳性，且为高表达；⑦染色体改变除t（8；21）（q22；q22）外，亦常见性染色体缺失及复杂染色体改变；⑧AML1／ETO融合基因检测均阳性；⑨对兼顾髓系和淋巴系的联合治疗方案反应较好。结论t（8；21）AML患者易伴有B细胞表型共表达。     

嗜酸性粒细胞增多症的细胞遗传学研究

为探讨染色体异常克隆在嗜酸性粒细胞增多症诊断和鉴别诊断中的意义及克隆性嗜酸性粒细胞增多症涉及的染色体异常,收集了65例嗜酸性粒细胞增多患者的骨髓标本,培养24小时,采用G显带进行核型分析。结果表明：65例中9例拟诊为急性髓细胞性白血病-M4Eo检出特异性的染色体异常inv（16）,而其余的56例以嗜酸性粒细胞增多待诊的患者中5例检出染色体异常克隆,检出率为8.9%。根据临床、血液学资料并结合染色体检出结果,5例患者最后分别被诊断为急性髓系白血病伴嗜酸性粒细胞增多、慢性嗜酸性粒细胞白血病、8p11骨髓增殖综合征、慢性髓系白血病急变、急性髓系白血病-M4Eo。检出的染色体异常克隆分别为＋14、t（5;12）（q31;p13）、t（8;9）（p11;q32）、t（9;22）（q34;q11）和inv（16）（p13q22）。结论：在嗜酸性粒细胞增多症的诊断中,染色体的检测是判定克隆性和诊断慢性嗜酸性粒细胞白血病的重要手段,应作为常规的检测。     

一株伴有t(6;11)(q27;q23)和p53基因异常的人单核细胞白血病细胞系SHI-1的建立及鉴定

目的建立人急性单核细胞白血病(AML—M5b)细胞系并研究其生物学特性。方法从1例AML—M5b患者白血病复发时的骨髓标本分离出单个核细胞，用液体培养法进行培养。采用瑞特染色、电子显微镜、细胞化学染色、流式细胞仪、R显带核型分析、逆转录-聚合酶链反应(RT—PCR)、荧光原位杂交(FISH)、半固体甲基纤维素集落培养、裸小鼠致瘤实验、荧光定量PCR、DNA荧光染色法及支原体肉汤培养法、短串联重复序列(STR)-PCR、p53基因的PCR扩增产物测序、多色FISH(M—FISH)和^3H—TdR掺入实验等方法对SHI-1细胞的生物学特性进行了鉴定、结果建立了1个可持续增殖的人单核细胞白血病细胞系SHI-1；形态学和免疫表型呈现典型的单核系特征；核型分析显示SHI-1细胞系有和患者复发时骨髓细胞完全相同的异常：46，XY，t(6；11)(q27；q23)，del(17)(p11)；RT—PCR检出MLL—AF6融合基因的转录本；FISH俭测结果显示存在6号和11号染色体之间易位、MLL基因的重排和p53基因的缺失；PCR产物测序结果显示1个p53等位基因6号外显子发生点突变ATC→ACC集落培养显示SHI-1细胞具有较强的集落形成能力；皮下接种4只裸小鼠均形成实体肿瘤；荧光定量PCR提示无EB病毒感染；DNA荧光染色法和支原体肉汤培养法术检出支原体；M—FISH证实传代至2003年3月的SHI-1细胞除有t(6；11)、del(17)(p11)外，还有t(7；13)所致的衍生7号染色体、18单体和来自8号染色体的微小体；STR—PCR结果显示SHI-1细胞系确实来自患者原代白血病细胞；IL4-和IL-15可促进SHI-1细胞的增殖，IFN-1、TNFα、IL-2、PDGF和IL-7可抑制SHI-1细胞的增殖。结论SHI-1是1个伴有t(6；11)(q27；q23)和P53基因异常的裸小鼠高致瘤性人单核细胞白血病细胞系，为白血病研究提供了一个新的有价值的工具。     

急性髓细胞白血病患者DC-CIK治疗后T细胞亚群动态变化的临床观察

目的观察急性髓细胞白血病患者经自体外周血移植联合自身白血病细胞冻融抗原负载的DC-CIK输注治疗后体内的T细胞亚群动态变化。方法选择50名初发急性髓细胞白血病患者,抽取其未缓解的骨髓制备自身白血病细胞冻融抗原,在自体外周血干细胞采集时分离部分单个核细胞培养DC-CIK,以自身白血病冻融抗原共培养激活扩增DC-CIK。患者自体外周血造血干细胞移植30～60 d输注自身白血病细胞冻融抗原负载的DC-CIK,每例每疗程回输细胞总数>7×109,同时给予IL-2(20 WU皮下注射,1次/d,连续10 d)皮下注射。动态观察患者接受DC-CIK细胞输注治疗后不同时间点体内T细胞亚群动态变化,并与既往接受自体外周血移植但未输注DC-CIK细胞治疗的52名急性髓细胞白血病患者进行比较分析。结果 50名患者DC-CIK输注后患者体内CD8+、CD16+、CD56+淋巴细胞均显著高于输注治疗前水平(P<0.01),治疗组同一随访时间段CD3+、CD4+、CD8+、CD16+、CD56+淋巴细胞均显著高于未采用DC-CIK治疗组(P<0.01)。结论对急性髓细胞白血病患者采用自体外周血移植联合自身白血病细胞冻融抗原负载的DC-CIK输注治疗,能显著提高患者肿瘤杀伤性T细胞水平,有助于清除移植后微小残留病,改善患者无病生存率(PFS)。     

骨髓增生异常综合征del（20q）异常细胞克隆在骨髓细胞系列和凋亡细胞中的分布

为了探讨20号染色体长臂部分缺失[del（20q）]的1例骨髓增生异常综合征（MDS—RAEB-1）患者异常细胞克隆在骨髓各细胞系列和凋亡细胞中的分布，应用单克隆抗体通过流式细胞分选（FACS）del（20q）的MDS患者骨髓CD15^＋、GPA^＋、CD3^＋CD56^-CD16^-、CD19^＋、CD3^-CD56^＋CD16^＋细胞，应用Annexin V—FITC和PI通过FACS分选该患者骨髓Annexin V^＋PI^-（凋亡细胞）和Annexin V^-PI^-细胞（活细胞），然后应用LSID20S108探针和Telvysion^TM 20p探针对分选细胞分别进行间期双色荧光原位杂交（D—FISH）检测。同时选取4例核型正常者作为对照组进行相应检测。结果显示。该MDSRAEB-1患者的骨髓CD15^＋细胞和GPA^＋细胞中MDS克隆百分比分别为70．50％和93．33％，明显高于对照组（5．39％和6．17％）；而在CD3^＋CD56^-1CD16^-1，CD19^＋，CD3^-CD56^＋CD16^＋细胞中分别为3．23％、4．32％、5．77％，低于对照组（5．76％、4．85％、6．36％）。该患者骨髓有核细胞凋亡率为16．09％。MDS细胞克隆在凋亡细胞和活细胞中的比例分别为32．48％和70．11％。结论：MDS患者del（20q）异常克隆主要分布于粒系与红系细胞，以及一小部分凋亡细胞     

酷似急性早幼粒细胞白血病表现的髓系/NK细胞急性白血病

为了提高对髓系/NK细胞急性白血病的认识,减少临床误诊,本文报告1例酷似急性早幼粒细胞白血病(APL)表现的髓系/NK细胞急性白血病并结合文献进行分析。对患者进行了一系列临床检查,血细胞形态学和免疫表型分析,以及细胞遗传学和分子生物学等检测。结果表明:患者无肝脾、淋巴结肿大,贫血伴血小板减少,白细胞增高,白血病细胞酷似异常早幼粒细胞尤其是变异型M3(M3v)细胞;免疫表型主要为CD34-、HLA-DR-、CD117+、CD33+、CD13-、CD15+、CD56+、cMPO+和CD16-,伴有del(7)(q22q32)染色体异常,但无t(15;17)改变和PML/RARα融合基因阴性,全反式维甲酸(ATRA)治疗反应不佳。结论:髓系/NK细胞急性白血病临床少见,易与APL尤其是M3v混淆,应采用急性髓系白血病化疗方案进行治疗。     

Chromosomal aberrations characteristic for sAML/sMDS are not detectable by random screening using FISH in peripheral blood-derived grafts used for autologous transplantation

Acute myeloid leukemia (AML) or myelodysplastic syndrome (MDS) is observed in 5 to 10% of patients treated with high-dose chemotherapies followed by autologous stem cell and bone marrow transplantation. Both diseases are frequently associated with monosomy 7 (-7), trisomy 8 (+8), loss of the long arm of chromosome 5 (-5q), and deletions including the TP53-gene region according to del(17)(p13). In this study, we examined whether these chromosomal aberrations are already detectable in blood stem cells from patients who have all been treated with standard chemotherapies prior to peripheral blood stem cell transplantation (PBSCT). Therefore, we screened peripheral blood derived stem cells obtained at the time of stem cell harvest for the presence of -7, +8, -5q, and del(17)(p13) by fluorescence in situ hybridization (FISH). Our series included 40 patients: 4 patients with Hodgkin's disease, 6 patients with non-Hodgkin-lymphoma (NHL), 1 patient with ALL, 4 patients with plasmocytoma, and 25 patients with solid tumors. Peripheral blood mononuclear cells (PBMC) from eight healthy blood donors served as controls. Assuming a hybridization efficiency of >98%, the cut-off level of non diploid cells was determined for each DNA-probe. None of the stem cell preparations exhibited chromosomal damage. Our findings indicate that chromosomal damage is a rare event in stem cell autografts.     

多发性骨髓瘤细胞系CZ-1的建立及其生物学特性

目的 建立多发性骨髓瘤（MM）细胞系并鉴定其生物学特性。方法 分离1例晚期λ轻链型MM患者外周血和骨髓的单个核细胞，用液体培养法进行培养，用瑞特-姬姆萨染色和细胞化学染色确定细胞形态；用免疫固定电泳技术检测细胞是否分泌单克隆λ轻链，用荧光定量PCR法检测细胞是否被EB病毒感染；用流式细胞仪分析细胞的免疫表型；用染色体G分带法研究细胞的遗传学特征。结果 所得细胞系在饲养细胞或条件培养液存在时，可以持久增殖，该细胞分泌λ轻链，EB病毒阴性；细胞在瑞特-姬姆萨染色下呈典型的原，幼浆细胞形态，细胞化学染色，酸性磷酸酶染色（ ），髓过氧化物酶（-）；细胞免疫表型为CD10^ ,CD28^ ,CD38^ ,CD138^ ,CD56^ ,CD49d^ ,CD54^ ,CD44^ ,CD58^ ，而不表达CD19，CD40，CD95，CD95L，CD34，CD2，CD5，骨髓来源和外周血来源的细胞系免疫表型无明显不同，核型分析结果均为i(lq ),8q 13q ,i(17q),i(18q), M。结论 用1例MM患者的外周血和骨髓细胞同时建立了一个生物学特性相同的分泌λ轻链的MM细胞系CZ-1。