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

目的 采用自体骨髓基质细胞与原代白血病细胞加rhIL-3后共培养的方法建立1株新的人急性髓系白血病(AML)细胞系SH-2,并对其生物学特征进行全面鉴定.方法 采集1例经联合化疗和异基因外周血干细胞移植末缓解的AML-M2a型患者骨髓,分离单个核细胞,加入含20%胎牛血清的IMDM培养基内置37℃、5%CO2、饱和湿度培养箱中传代培养,培养过程中保留自体骨髓基质细胞,同时加入细胞因子rhIL-3,长期体外培养成功建立伴有-Y,der(16)t(16;17)(q24;q12),-17,+19和p53突变的AML细胞系SH-2,并通过细胞学、遗传学、免疫学、分子学和小鼠致瘤实验等多种方法对SH-2细胞的生物学特征进行全面鉴定.结果 SH-2细胞已在体外持续生长3年余而不需加用生长因子和基质细胞.其EB病毒、支原体检测均为阴性.SH-2细胞具有和原代白血病细胞相同的髓系细胞形态学特点,伴有自然杀伤相关抗原表达的AML免疫表型(CD13+、CD33+、CD56+、CD16/56+)和45,X,-Y,der(16)t(16;17)(q24;q12),-17,+19的亚二倍体核型,后者逐渐被伴有上述染色体异常的近四倍体核犁所取代.荧光原位杂交(FISH)和多色FISH证实了以上异常,并揭示-17导敛1个p53基因丢失.DNA序列分析揭示另1个p53等位基因第5号外显子的576编码子点突变(CAC→CAT).RT-PCR显示除了表达于细胞因子(SCF)外,其余细胞因子均不表达;不表达多药耐药基因而表达凋亡相关基因,如bcl-2、Fas、GST-1T和p21.短串联重复序列PCR证明了SH-2细胞和患者门血病细胞的同源性.SH-2细胞有一定的集落形成能力并能在裸鼠皮下及SCID小鼠内脏成瘤.结论 SH-2是一株新的具有明晰生物学背景的AML细胞系,为白血病研究提供了又一有用工具.     

青黛复方对K562细胞bcr/abl及JWA基因表达的影响

为了研究不同浓度青黛复方对K562细胞株增殖、凋亡及bcr/abl、JWA基因表达水平的影响,为临床治疗提供理论依据,以不同浓度药物（2.5、5、7.5、10和20 mg/ml）处理K562细胞24小时后,光学显微镜下观察形态学改变;采用半定量RT-PCR技术检测各组bcr/abl及JWA基因在mRNA水平表达的变化.结果发现,随药物作用浓度升高,K562细胞逐渐呈典型凋亡形态学改变;bcr/abl及JWA基因表达呈浓度依赖性下降.结论：青黛复方能部分抑制K562 bcr/abl及JWA基因的表达,其对CML的疗效可能是通过促进细胞凋亡而实现的.     

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.     

嵌合抗原受体T细胞序贯异基因造血干细胞移植治疗Ph样急性淋巴细胞白血病21例的疗效及安全性

目的评估嵌合抗原受体T细胞(CAR-T细胞)序贯异基因造血干细胞移植(allo-HSCT)治疗Ph样急性淋巴细胞白血病(Ph样ALL)患者的疗效及安全性。方法纳入2018年3月至2023年8月在苏州大学附属第一医院接受CAR-T细胞序贯allo-HSCT治疗的21例Ph样ALL患者, 对其临床资料进行回顾性分析。结果 21例患者中, 男14例, 女7例。接受CAR-T细胞治疗时的中位年龄为22(6～50)岁。7例为ABL1样重排, 14例为JAK-STAT重排。接受CAR-T细胞治疗前, 12例为血液学未缓解, 7例为多参数流式细胞术微小残留病(MFC-MRD)阳性, 2例为MFC-MRD阴性。CAR-T细胞均来自患者自体淋巴细胞。9例接受CD19 CAR-T细胞治疗, 12例接受CD19/CD22双靶点CAR-T细胞治疗。CAR-T细胞治疗后28 d评估, 完全缓解率为95.2%, 其中MFC-MRD阴性缓解率75.0%。19例患者出现0～2级细胞因子释放综合征(CRS), 2例患者出现3级CRS, 经治疗后均恢复。所有患者CAR-T细胞治疗后均接受allo-HSCT。CAR-T细胞...     

siRNA介导的LPXN沉默可抑制SHI-1 细胞增殖及增强SHI-1 细胞药物的敏感性

目的探讨LPXN表达下调对人急性单核白血病SHI-1 细胞增殖及药物敏感性的影响。方法将荧光标记的不同浓度 FAM-siRNA序列转染SHI-1细胞后FCM检测转染效率,并优化转染条件。合成LPXN基因特异的siRNA序列（LPXN-siRNA） 并转染SHI-1 细胞,Western blot 筛选能有效干扰LPXN蛋白表达的siRNA 序列以及细胞内p-MAPK的表达。CCK-8 检测 LPXN-siRNA转染后SHI-1细胞的增殖以及细胞对姜黄素（Cur）或阿糖胞苷（Ara-C）药物敏感性的改变。结果当细胞接种密 度为4×105/mL 且siRNA/Lipofectamine 2000 混合比例为200 pmol/1 μL 时,FAM-siRNA 转染入SHI-1 细胞的最高效率达到 74.5%,且筛选出L2-siRNA为有效下调LPXN表达的siRNA序列。在N-siRNA转染的阴性对照组SHI-1 细胞增殖抑制率为 8.247±1.003,而在下调LPXN表达的L2-siRNA转染组细胞增殖抑制率增加至（27.043±2.051）%（P<0.05）;并且各组进一步添加 （0~25 μmol）Cur或（0~2.0 μmol）Ara-C药物后,L2-siRNA转染组的细胞增殖抑制率、p-JNK和p-P38 MAPK的表达均明显高于 N-siRNA对照转染组。而p-ERK的表达水平则各组基本一致。结论siRNA特异性干扰下调LPXN蛋白表达后,可能通过激活 MAPK家族的JNK及P38 MAPK蛋白酶,从而抑制人急性单核白血病SHI-1细胞的增殖,增强SHI-1细胞对Cur或Ara-C药物 的敏感性。     

肝癌介入术后的护理干预

目的：探讨肝癌介入术后的护理干预。方法：对30例肝癌介入术后患者出现的并发症进行针对性的护理干预。结果：经有效的护理干预,副作用有效缓解,于术后6—14天好转出院。结论：有效的护理干预能减轻患者的痛苦,提高生活质量,提高介入治疗的效果。     

姜黄素诱导Jurkat细胞凋亡时MAPKs及MMPs家族的表达

目的探讨姜黄素体外诱导人T细胞淋巴瘤Jurkat 细胞凋亡时MAPKs及MMPs家族成员的表达,揭示其可能的分子机
制。方法以不同浓度姜黄素作用Jurkat 细胞不同时间,MTT检测细胞增殖抑制率,流式细胞术检测细胞周期变化,Westernblot
检测MAPKs家族成员的表达,明胶酶谱法检测细胞培养上清中MMPs的活性。结果姜黄素呈时间-剂量依赖性抑制
Jurkat细胞增殖,使细胞阻滞于G0/G1期。以6.25、12.50及25.00 μmol/L姜黄素分别处理Jurkat细胞,胞内JNK和P-JNK的表达
均呈浓度依赖性上升（P<0.01）,而ERK1/2及P38 MAPK的表达与阴性对照组相比无明显改变。另细胞培养上清中MMP-2及
MMP-9的活性在各药物处理组中也基本不变。结论姜黄素在（6.25~25.00）μmol/L浓度范围时,可体外诱导Jurkat细胞的凋
亡,阻滞细胞于G0/G1期。其分子机制可能与激活MAPKs家族中的JNk信号通路有关,而与MMPs家族成员的活性无关。
     

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.