Objective SUMO-specific protease 3(SENP3),a member of the SUMO-specific protease family,reverses the SUMOylation of SUMO-2/3 conjugates.Dysregulation of SENP3 has been proven to be involved in the development of vario...Objective SUMO-specific protease 3(SENP3),a member of the SUMO-specific protease family,reverses the SUMOylation of SUMO-2/3 conjugates.Dysregulation of SENP3 has been proven to be involved in the development of various tumors.However,its role in mantle cell lymphoma(MCL),a highly aggressive lymphoma,remains unclear.This study was aimed to elucidate the effect of SENP3 in MCL.Methods The expression of SENP3 in MCL cells and tissue samples was detected by RT-qPCR,Western blotting or immunohistochemistry.MCL cells with stable SENP3 knockdown were constructed using short hairpin RNAs.Cell proliferation was assessed by CCK-8 assay,and cell apoptosis was determined by flow cytometry.mRNA sequencing(mRNA-seq)was used to investigate the underlying mechanism of SENP3 knockdown on MCL development.A xenograft nude mouse model was established to evaluate the effect of SENP3 on MCL growth in vivo.Results SENP3 was upregulated in MCL patient samples and cells.Knockdown of SENP3 in MCL cells inhibited cell proliferation and promoted cell apoptosis.Meanwhile,the canonical Wnt signaling pathway and the expression of Wnt10a were suppressed after SENP3 knockdown.Furthermore,the growth of MCL cells in vivo was significantly inhibited after SENP3 knockdown in a xenograft nude mouse model.Conclusion SENP3 participants in the development of MCL and may serve as a therapeutic target for MCL.展开更多
Objective： To explore the effects of Danshen Injection （丹参注射液） on inhibition proliferation, inducing apoptosis and its possible mechanisms on human erythroid leukemic （HEL） cells. Methods： The commercial Ch...Objective： To explore the effects of Danshen Injection （丹参注射液） on inhibition proliferation, inducing apoptosis and its possible mechanisms on human erythroid leukemic （HEL） cells. Methods： The commercial Chinese patent medicine of Danshen Injection was extracted and isolated from Chinese herb of Salvia miltiorrhiza bung. The inhibition effects of proliferation were assayed by 3-（4,5-dimethylthiazol-2-yl）-2, 5-diphenyltetrazolium bromide （M＇l-r） method in HEL cells treated by Danshen Injection at various concentrations for 48 h. The cellular apoptosis was observed in morphology, analyzed by flow cytometry with annexin V and propidium iodide （PI） staining, and examined by DNA degradation ladder on agarose gel electrophoresis. Meanwhile, the expression levels of mutant Janus kinasez （JAK2） gene and phosphorylation-JAK2 （P-JAK2） protein were detected by allele specific-polymerase chain reaction and Western blot. ]Results： The proliferation of HEL cells was effectively inhibited by Danshen Injection in a dose-dependent manner, with suppression rates from 19.46 ± 2.31% to 50.20 ± 5.21%. Typical apoptosis cells was observed in Danshen Injection treated HEL cells, the rates of annexin V positive cells increased obviously in a dose-dependent manner, as well as the DNA degradation ladder of apoptosis revealed on gel electrophoresis. The expression levels of mutant JAK2 gene and P-JAK2 protein reduced gradually with increasing dosage of Danshen injection. Conclusion： Danshen Injection could not only significantly inhibit the proliferation, but also induce apoptosis in HEL cells; down-regulation of the mutant JAK2 gene and P-JAK2 protein expressions are probably one of its molecular mechanisms.展开更多
目的探究LncRNA ZFAS1是否通过调节miR-34b-5p促进弥漫大B细胞淋巴瘤(diffuse large B lymphoma,DLBCL)细胞增殖并抑制细胞凋亡。方法实时荧光定量PCR(RT-qPCR)检测30例DLBCL患者肿瘤组织及DLBCL细胞株中LncRNA ZFAS1和miR-34b-5p转录...目的探究LncRNA ZFAS1是否通过调节miR-34b-5p促进弥漫大B细胞淋巴瘤(diffuse large B lymphoma,DLBCL)细胞增殖并抑制细胞凋亡。方法实时荧光定量PCR(RT-qPCR)检测30例DLBCL患者肿瘤组织及DLBCL细胞株中LncRNA ZFAS1和miR-34b-5p转录水平。将含有敲低ZFAS1序列的载体和抑制或过表达miR-34b-5p的序列使用Lipofectamine 2000试剂转染到SU-DHL-4细胞,RT-qPCR检测敲低和过表达效率,双荧光素酶报告基因实验分析ZFAS1和miR-34b-5p的靶向关系。最后SU-DHL-4细胞随机分组为对照组、sh-ZFAS1组、miR-34b-5p inhibitor组和shRNA-ZFAS1+miR-34b-5p inhibitor组,克隆形成实验和流式细胞术分别检测细胞增殖和凋亡;蛋白质印迹法检测凋亡相关蛋白的表达。结果在DLBCL患者和细胞系中ZFAS1的表达量增加,而miR-34b-5p的表达量减少,同时ZFAS1靶向负调节miR-34b-5p的表达。与对照组相比较,sh-ZFAS1组miR-34b-5p的表达量增加,miR-34b-5p inhibitor组miR-34b-5p的表达量减少。与miR-34b-5p inhibitor组相比较,sh-ZFAS1和miR-34b-5p inhibitor共转染组中miR-34b-5p的表达量增加。敲低ZFAS1的表达抑制SU-DHL-4细胞增殖,促进细胞凋亡,并降低线粒体膜电位,同时升高Bax/Bcl-2和cleaved caspase-3/caspase-3比值。结论LncRNA ZFAS1通过下调miR-34b-5p促进SU-DHL-4细胞增殖并抑制细胞凋亡。展开更多
基金supported by the Chongqing Natural Science Foundation(No.2023NSCQ-MSX3161 and No.cstc2020jcyj-msxmX1058)the National Natural Science Foundation of China(No.81800172).
文摘Objective SUMO-specific protease 3(SENP3),a member of the SUMO-specific protease family,reverses the SUMOylation of SUMO-2/3 conjugates.Dysregulation of SENP3 has been proven to be involved in the development of various tumors.However,its role in mantle cell lymphoma(MCL),a highly aggressive lymphoma,remains unclear.This study was aimed to elucidate the effect of SENP3 in MCL.Methods The expression of SENP3 in MCL cells and tissue samples was detected by RT-qPCR,Western blotting or immunohistochemistry.MCL cells with stable SENP3 knockdown were constructed using short hairpin RNAs.Cell proliferation was assessed by CCK-8 assay,and cell apoptosis was determined by flow cytometry.mRNA sequencing(mRNA-seq)was used to investigate the underlying mechanism of SENP3 knockdown on MCL development.A xenograft nude mouse model was established to evaluate the effect of SENP3 on MCL growth in vivo.Results SENP3 was upregulated in MCL patient samples and cells.Knockdown of SENP3 in MCL cells inhibited cell proliferation and promoted cell apoptosis.Meanwhile,the canonical Wnt signaling pathway and the expression of Wnt10a were suppressed after SENP3 knockdown.Furthermore,the growth of MCL cells in vivo was significantly inhibited after SENP3 knockdown in a xenograft nude mouse model.Conclusion SENP3 participants in the development of MCL and may serve as a therapeutic target for MCL.
基金Supported by Zhejiang Province Administration of Traditional Chinese Medicine(No.2010ZA120)Zhejiang Provincial Natural Science Foundation of China(No.Y207632)
文摘Objective： To explore the effects of Danshen Injection （丹参注射液） on inhibition proliferation, inducing apoptosis and its possible mechanisms on human erythroid leukemic （HEL） cells. Methods： The commercial Chinese patent medicine of Danshen Injection was extracted and isolated from Chinese herb of Salvia miltiorrhiza bung. The inhibition effects of proliferation were assayed by 3-（4,5-dimethylthiazol-2-yl）-2, 5-diphenyltetrazolium bromide （M＇l-r） method in HEL cells treated by Danshen Injection at various concentrations for 48 h. The cellular apoptosis was observed in morphology, analyzed by flow cytometry with annexin V and propidium iodide （PI） staining, and examined by DNA degradation ladder on agarose gel electrophoresis. Meanwhile, the expression levels of mutant Janus kinasez （JAK2） gene and phosphorylation-JAK2 （P-JAK2） protein were detected by allele specific-polymerase chain reaction and Western blot. ]Results： The proliferation of HEL cells was effectively inhibited by Danshen Injection in a dose-dependent manner, with suppression rates from 19.46 ± 2.31% to 50.20 ± 5.21%. Typical apoptosis cells was observed in Danshen Injection treated HEL cells, the rates of annexin V positive cells increased obviously in a dose-dependent manner, as well as the DNA degradation ladder of apoptosis revealed on gel electrophoresis. The expression levels of mutant JAK2 gene and P-JAK2 protein reduced gradually with increasing dosage of Danshen injection. Conclusion： Danshen Injection could not only significantly inhibit the proliferation, but also induce apoptosis in HEL cells; down-regulation of the mutant JAK2 gene and P-JAK2 protein expressions are probably one of its molecular mechanisms.
