BACKGROUND Heterogeneous ribonucleoprotein A1(hnRNPA1)has been reported to enhance the Warburg effect and promote colon cancer(CC)cell proliferation,but the role and mechanism of the miR-490-3p/hnRNPA1-b/PKM2 axis in ...BACKGROUND Heterogeneous ribonucleoprotein A1(hnRNPA1)has been reported to enhance the Warburg effect and promote colon cancer(CC)cell proliferation,but the role and mechanism of the miR-490-3p/hnRNPA1-b/PKM2 axis in CC have not yet been elucidated.AIM To investigate the role and mechanism of a novel miR-490-3p/hnRNPA1-b/PKM2 axis in enhancing the Warburg effect and promoting CC cell proliferation through the PI3K/AKT pathway.METHODS Paraffin-embedded pathological sections from 220 CC patients were collected and subjected to immunohistochemical analysis to determine the expression of hnRNPA1-b.The relationship between the expression values and the clinicopathological features of the patients was investigated.Differences in mRNA expression were analyzed using quantitative real-time polymerase chain reaction,while differences in protein expression were analyzed using western blot.Cell proliferation was evaluated using the cell counting kit-8 and 5-ethynyl-2’-deoxyuridine assays,and cell cycle and apoptosis were detected using flow cytometric assays.The targeted binding of miR-490-3p to hnRNPA1-b was validated using a dual luciferase reporter assay.The Warburg effect was evaluated by glucose uptake and lactic acid production assays.RESULTS The expression of hnRNPA1-b was significantly increased in CC tissues and cells compared to normal controls(P<0.05).Immunohistochemical results demonstrated significant variations in the expression of the hnRNPA1-b antigen in different stages of CC,including stage I,II-III,and IV.Furthermore,the clinicopathologic characterization revealed a significant correlation between hnRNPA1-b expression and clinical stage as well as T classification.HnRNPA1-b was found to enhance the Warburg effect through the PI3K/AKT pathway,thereby promoting proliferation of HCT116 and SW620 cells.However,the proliferation of HCT116 and SW620 cells was inhibited when miR-490-3p targeted and bound to hnRNPA1-b,effectively blocking the Warburg effect.CONCLUSION These findings suggest that the novel miR-490-3p/hnRNPA1-b/PKM2 axis could provide a new strategy for the diagnosis and treatment of CC.展开更多
The one-pot three-component reaction of 2-aminobenzothiazole, benzaldehyde derivatives and β-ketoester, β-diketone or malonate derivatives in solvent-free conditions provides the corresponding pyrimido [2,1-b] benzo...The one-pot three-component reaction of 2-aminobenzothiazole, benzaldehyde derivatives and β-ketoester, β-diketone or malonate derivatives in solvent-free conditions provides the corresponding pyrimido [2,1-b] benzothiazole derivatives at 60?C in 60% - 72% yields without using any catalyst in an optimistic time.展开更多
Isoxazole derivatives were characterized by broad spectrum of biological activities, but the condensed heterocyclic compounds containing isoxazole were scarcely reported. In this paper, we studied the 1,3-dipolar cycl...Isoxazole derivatives were characterized by broad spectrum of biological activities, but the condensed heterocyclic compounds containing isoxazole were scarcely reported. In this paper, we studied the 1,3-dipolar cycloaddition of p-methoxybenzohydroxamoyl chloride with ethyl sodioacetoacetate to obtain a key intermediate 2. Through compound 2, fifteen novel S-triazolo-1,3,4-thiadiazines(5a-5e), imidazolo-1,3,4-thiadiazoles(9a-9e) and imidazolo-1,3,4-oxadiazoles(10a-10e) containing isoxazole, which have potentially useful biological activities, were synthesized. The structures of the products were confirmed by elemental analyses and spectral analysis. And the characteristic data of IR, 1H NMR and MS were explained reasonably.展开更多
目的观察红芪多糖(HPS)对糖尿病大鼠视网膜血小板反应蛋白-1(TSP-1)和血小板源性生长因子-B(PDGF-B)表达的影响,探讨其对糖尿病视网膜病变的保护作用及可能机制。方法采用链脲佐菌素腹腔注射建立糖尿病模型。雄性Wistar大鼠随机分为模...目的观察红芪多糖(HPS)对糖尿病大鼠视网膜血小板反应蛋白-1(TSP-1)和血小板源性生长因子-B(PDGF-B)表达的影响,探讨其对糖尿病视网膜病变的保护作用及可能机制。方法采用链脲佐菌素腹腔注射建立糖尿病模型。雄性Wistar大鼠随机分为模型组、多贝斯组和HPS高、中、低剂量组,另设正常组,每组10只。各给药组给予相应药物灌胃,模型组和正常组给予等量生理盐水灌胃,1次/d,连续8周。q RT-PCR和免疫组化检测TSP-1和PDGF-B m RNA和蛋白表达;HE染色镜下观察视网膜的结构。结果模型组视网膜各层结构清晰、完整,但外核层疏松变薄、排列紊乱,神经节细胞数量稍减少;各给药组较模型组明显好转。与正常组比较,模型组视网膜TSP-1 m RNA和蛋白表达明显降低(P<0.01),PDGF-B m RNA和蛋白表达明显升高(P<0.01);与模型组比较,各给药组TSP-1 m RNA和蛋白表达明显升高(P<0.05,P<0.01),PDGF-B m RNA和蛋白表达明显降低(P<0.01);HPS高剂量组与其余给药组比较,TSP-1和PDGF-B m RNA和蛋白表达差异有统计学意义(P<0.05,P<0.01)。结论 HPS可能通过升高糖尿病大鼠视网膜组织TSP-1的表达和降低PDGF-B的表达来阻遏糖尿病视网膜病变进程中新生血管生成及增殖,从而起到保护视网膜的作用。展开更多
基金Supported by the National Natural Science Foundation of China,No.82160405Jiangxi Provincial Natural Science Foundation,No.20232BAB206131,No.20212ACB206016,and No.20224BAB206114+1 种基金Jiangxi Provincial Health Commission Project,No.202310887the Development Fund of Jiangxi Cancer Hospital,No.2021J10.
文摘BACKGROUND Heterogeneous ribonucleoprotein A1(hnRNPA1)has been reported to enhance the Warburg effect and promote colon cancer(CC)cell proliferation,but the role and mechanism of the miR-490-3p/hnRNPA1-b/PKM2 axis in CC have not yet been elucidated.AIM To investigate the role and mechanism of a novel miR-490-3p/hnRNPA1-b/PKM2 axis in enhancing the Warburg effect and promoting CC cell proliferation through the PI3K/AKT pathway.METHODS Paraffin-embedded pathological sections from 220 CC patients were collected and subjected to immunohistochemical analysis to determine the expression of hnRNPA1-b.The relationship between the expression values and the clinicopathological features of the patients was investigated.Differences in mRNA expression were analyzed using quantitative real-time polymerase chain reaction,while differences in protein expression were analyzed using western blot.Cell proliferation was evaluated using the cell counting kit-8 and 5-ethynyl-2’-deoxyuridine assays,and cell cycle and apoptosis were detected using flow cytometric assays.The targeted binding of miR-490-3p to hnRNPA1-b was validated using a dual luciferase reporter assay.The Warburg effect was evaluated by glucose uptake and lactic acid production assays.RESULTS The expression of hnRNPA1-b was significantly increased in CC tissues and cells compared to normal controls(P<0.05).Immunohistochemical results demonstrated significant variations in the expression of the hnRNPA1-b antigen in different stages of CC,including stage I,II-III,and IV.Furthermore,the clinicopathologic characterization revealed a significant correlation between hnRNPA1-b expression and clinical stage as well as T classification.HnRNPA1-b was found to enhance the Warburg effect through the PI3K/AKT pathway,thereby promoting proliferation of HCT116 and SW620 cells.However,the proliferation of HCT116 and SW620 cells was inhibited when miR-490-3p targeted and bound to hnRNPA1-b,effectively blocking the Warburg effect.CONCLUSION These findings suggest that the novel miR-490-3p/hnRNPA1-b/PKM2 axis could provide a new strategy for the diagnosis and treatment of CC.
文摘The one-pot three-component reaction of 2-aminobenzothiazole, benzaldehyde derivatives and β-ketoester, β-diketone or malonate derivatives in solvent-free conditions provides the corresponding pyrimido [2,1-b] benzothiazole derivatives at 60?C in 60% - 72% yields without using any catalyst in an optimistic time.
文摘Isoxazole derivatives were characterized by broad spectrum of biological activities, but the condensed heterocyclic compounds containing isoxazole were scarcely reported. In this paper, we studied the 1,3-dipolar cycloaddition of p-methoxybenzohydroxamoyl chloride with ethyl sodioacetoacetate to obtain a key intermediate 2. Through compound 2, fifteen novel S-triazolo-1,3,4-thiadiazines(5a-5e), imidazolo-1,3,4-thiadiazoles(9a-9e) and imidazolo-1,3,4-oxadiazoles(10a-10e) containing isoxazole, which have potentially useful biological activities, were synthesized. The structures of the products were confirmed by elemental analyses and spectral analysis. And the characteristic data of IR, 1H NMR and MS were explained reasonably.
文摘目的观察红芪多糖(HPS)对糖尿病大鼠视网膜血小板反应蛋白-1(TSP-1)和血小板源性生长因子-B(PDGF-B)表达的影响,探讨其对糖尿病视网膜病变的保护作用及可能机制。方法采用链脲佐菌素腹腔注射建立糖尿病模型。雄性Wistar大鼠随机分为模型组、多贝斯组和HPS高、中、低剂量组,另设正常组,每组10只。各给药组给予相应药物灌胃,模型组和正常组给予等量生理盐水灌胃,1次/d,连续8周。q RT-PCR和免疫组化检测TSP-1和PDGF-B m RNA和蛋白表达;HE染色镜下观察视网膜的结构。结果模型组视网膜各层结构清晰、完整,但外核层疏松变薄、排列紊乱,神经节细胞数量稍减少;各给药组较模型组明显好转。与正常组比较,模型组视网膜TSP-1 m RNA和蛋白表达明显降低(P<0.01),PDGF-B m RNA和蛋白表达明显升高(P<0.01);与模型组比较,各给药组TSP-1 m RNA和蛋白表达明显升高(P<0.05,P<0.01),PDGF-B m RNA和蛋白表达明显降低(P<0.01);HPS高剂量组与其余给药组比较,TSP-1和PDGF-B m RNA和蛋白表达差异有统计学意义(P<0.05,P<0.01)。结论 HPS可能通过升高糖尿病大鼠视网膜组织TSP-1的表达和降低PDGF-B的表达来阻遏糖尿病视网膜病变进程中新生血管生成及增殖,从而起到保护视网膜的作用。
