目的:食管鳞状上皮癌TE-1细胞中microRNA-21(miR-21)高表达,本研究探讨miR-21对TE-1细胞生物学特性的影响。方法:转染miRZip-21慢病毒,持久抑制TE-1细胞中高表达的miR-21,将由此获得的稳定细胞系命名为anti-miR-21细胞系,实时定量PCR方...目的:食管鳞状上皮癌TE-1细胞中microRNA-21(miR-21)高表达,本研究探讨miR-21对TE-1细胞生物学特性的影响。方法:转染miRZip-21慢病毒,持久抑制TE-1细胞中高表达的miR-21,将由此获得的稳定细胞系命名为anti-miR-21细胞系,实时定量PCR方法验证,以TE-1细胞作为对照。细胞增殖实验检测anti-miR-21细胞增殖能力,Transwell侵袭实验观察细胞侵袭能力,Transwell迁移实验及划痕实验观察细胞迁移能力,克隆形成实验及细胞毒性实验分别观察放射线及药物敏感性变化。结果:Anti-miR-21细胞的相对增殖率较对照组TE-1细胞低,差异具有统计学意义(P<0.05)。Transwell侵袭实验及迁移实验显示穿过小室的anti-miR-21细胞较TE-1细胞分别减少51.97%及64.31%,差异具有统计学意义(P<0.05)。划痕实验显示anti-miR-21细胞较TE-1细胞的迁移率降低,差异具有统计学意义(P<0.01)。克隆形成实验分析显示anti-miR-21细胞的D0值(2.73Gy vs 3.60Gy)和Dq值(1.25Gy vs 2.75Gy)均低于对照组,差异具有统计学意义(P<0.05)。细胞毒性实验显示anti-miR-21细胞在顺铂及氟尿嘧啶各个梯度浓度下细胞存活率均降低,差异具有统计学意义(P<0.05)。结论:MiR-21影响食管鳞状上皮癌TE-1细胞的生物学特性。抑制miR-21表达后,降低了TE-1细胞的增殖、侵袭及迁移能力,同时增加了其对放射及化学药物的敏感性。MiR-21可能成为食管鳞癌治疗的潜在靶点。展开更多
Acute myeloid leukemia (AML) is a phenotypically heterogeneous disorder. The M4 subtype of AML is frequently associated with the cytogenetic marker inversion 16 and/or the presence of eosinophilia. Blast crisis is the...Acute myeloid leukemia (AML) is a phenotypically heterogeneous disorder. The M4 subtype of AML is frequently associated with the cytogenetic marker inversion 16 and/or the presence of eosinophilia. Blast crisis is the aggressive phase of the triphasic chronic myeloid leukemia (CML), which is a disease with Philadelphia (Ph) chromosome as the major abnormality. In the present study, we report a 76-year-old patient suspected of having AML with eosinophilic differentiation (AML-M4), which in clinical tests resembles CML blast crisis with multiple chromosomal abnormalities. Isochromosome 21 [i(21)(q10)] was the most recurrent feature noted in metaphases with 46 chromosomes. Ring chromosome, tetraploid endoreduplication, recurrent aneuploid clones with loss of X chromosome, monosomy 17, monosomy 7, and structural variation translocation (9;14) were also observed in this patient. Fluorescent in situ hybridization (FISH) confirmed the absence of Ph chromosome. This report shows how cytogenetic analyses revealed atypical structural aberrations in the M4 subtype of AML.展开更多
文摘目的:食管鳞状上皮癌TE-1细胞中microRNA-21(miR-21)高表达,本研究探讨miR-21对TE-1细胞生物学特性的影响。方法:转染miRZip-21慢病毒,持久抑制TE-1细胞中高表达的miR-21,将由此获得的稳定细胞系命名为anti-miR-21细胞系,实时定量PCR方法验证,以TE-1细胞作为对照。细胞增殖实验检测anti-miR-21细胞增殖能力,Transwell侵袭实验观察细胞侵袭能力,Transwell迁移实验及划痕实验观察细胞迁移能力,克隆形成实验及细胞毒性实验分别观察放射线及药物敏感性变化。结果:Anti-miR-21细胞的相对增殖率较对照组TE-1细胞低,差异具有统计学意义(P<0.05)。Transwell侵袭实验及迁移实验显示穿过小室的anti-miR-21细胞较TE-1细胞分别减少51.97%及64.31%,差异具有统计学意义(P<0.05)。划痕实验显示anti-miR-21细胞较TE-1细胞的迁移率降低,差异具有统计学意义(P<0.01)。克隆形成实验分析显示anti-miR-21细胞的D0值(2.73Gy vs 3.60Gy)和Dq值(1.25Gy vs 2.75Gy)均低于对照组,差异具有统计学意义(P<0.05)。细胞毒性实验显示anti-miR-21细胞在顺铂及氟尿嘧啶各个梯度浓度下细胞存活率均降低,差异具有统计学意义(P<0.05)。结论:MiR-21影响食管鳞状上皮癌TE-1细胞的生物学特性。抑制miR-21表达后,降低了TE-1细胞的增殖、侵袭及迁移能力,同时增加了其对放射及化学药物的敏感性。MiR-21可能成为食管鳞癌治疗的潜在靶点。
基金supported by a grant from Kerala State Council for Science, Technology and Environment(KSCSTE), Govt. of Kerala, India
文摘Acute myeloid leukemia (AML) is a phenotypically heterogeneous disorder. The M4 subtype of AML is frequently associated with the cytogenetic marker inversion 16 and/or the presence of eosinophilia. Blast crisis is the aggressive phase of the triphasic chronic myeloid leukemia (CML), which is a disease with Philadelphia (Ph) chromosome as the major abnormality. In the present study, we report a 76-year-old patient suspected of having AML with eosinophilic differentiation (AML-M4), which in clinical tests resembles CML blast crisis with multiple chromosomal abnormalities. Isochromosome 21 [i(21)(q10)] was the most recurrent feature noted in metaphases with 46 chromosomes. Ring chromosome, tetraploid endoreduplication, recurrent aneuploid clones with loss of X chromosome, monosomy 17, monosomy 7, and structural variation translocation (9;14) were also observed in this patient. Fluorescent in situ hybridization (FISH) confirmed the absence of Ph chromosome. This report shows how cytogenetic analyses revealed atypical structural aberrations in the M4 subtype of AML.
