ABSTRACT
Long non-coding RNAs (lncRNAs) regulate transcription to control development and homeostasis in a variety of tissues and organs. However, their roles in the development of the cerebral cortex have not been well elucidated. Here, a bioinformatics pipeline was applied to delineate the dynamic expression and potential cis-regulating effects of mouse lncRNAs using transcriptome data from 8 embryonic time points and sub-regions of the developing cerebral cortex. We further characterized a sense lncRNA, SenZfp536, which is transcribed downstream of and partially overlaps with the protein-coding gene Zfp536. Both SenZfp536 and Zfp536 were predominantly expressed in the proliferative zone of the developing cortex. Zfp536 was cis-regulated by SenZfp536, which facilitates looping between the promoter of Zfp536 and the genomic region that transcribes SenZfp536. Surprisingly, knocking down or activating the expression of SenZfp536 increased or compromised the proliferation of cortical neural progenitor cells (NPCs), respectively. Finally, overexpressing Zfp536 in cortical NPCs reversed the enhanced proliferation of cortical NPCs caused by SenZfp536 knockdown. The study deepens our understanding of how lncRNAs regulate the propagation of cortical NPCs through cis-regulatory mechanisms.
ABSTRACT
Objective:To evaluate the efficacy of modular flexible ureteroscopy combined with minimally invasive percutaneous nephrolithotomy in patients with complex kidney stones.Methods:From March 2017 to February 2019 in Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine, Hebei Province, 150 patients with complex kidney stones were selected. The patients were divided into group A, group B and group C by sortition method with 50 cases each. Group A was treated with modular flexible ureteroscopy, group B was treated with standard percutaneous nephrolithotomy, and group C was treated with modular flexible ureteroscopy combined with minimally invasive percutaneous nephrolithotomy. The operation time, transoperative bleeding, hospitalization time, calculi clearance 1- and 3-month after operation, procalcitonin (PCT) and C-reactive protein (CRP) 2 h before operation and 1 and 3 d after operation were compared among 3 groups.Results:The operation time, transoperative bleeding and hospitalization time in group C were significantly lower than those in group A and group B: (65.25 ± 7.90) min vs. (99.73 ± 8.52) and (96.11 ± 9.92) min, (33.22 ± 3.70) ml vs. (41.54 ± 3.62) and (45.17 ± 3.30) ml, (3.90 ± 0.90) d vs. (4.77 ± 1.17) and (5.70 ± 1.19) d, the calculi clearance 1- and 3-month after operation was significantly higher than that in group A and group B: 94.00% (47/50) vs. 80.00% (40/50) and 82.00% (41/50), 98.00% (49/50) vs. 84.00% (42/50) and 86.00% (43/50), and there were statistical differences ( P<0.05). There were no statistical differences in PCT and CRP 2 h before operation among 3 groups ( P>0.05); the PCT and CRP 1 and 3 d after operation in group C were significantly lower than those in group A and group B, and there were statistical differences ( P<0.05). There were no statistical differences in all indexes between group A and group B ( P>0.05). Conclusions:Modular flexible ureteroscopy combined with minimally invasive percutaneous nephrolithotomy can effectively improve calculi clearance, reduce surgical trauma, shorten operation time, promote recovery, and have significant therapeutic effects in the treatment of complex kidney stones.
ABSTRACT
Objective: To investigate the effects of recombinant human granulocyte colony-stimulating factor (rhG-CSF) combined with arsenic trioxide (ATO) (molecular formula: As2O3) on the proliferation and apoptosis of acute myeloid leukemia (AML) cells, and to explore the possible mechanisms. Methods: AML cells HL-60 and THP-1 were pre-treated with rhG-CSF (100 ng/mL), and then treated with different concentrations of As2O3. The relative proliferation rate was detected by CCK-8 method, while the apoptosis and cell cycle distribution were measured by FCM method. The expression levels of aquaporin 9 (AQP9) mRNA and protein in HL-60, THP-1 and acute promyelocytic leukemia NB4 cells as well as HL-60 and THP-1 cells treated with rhG-CSF (100 ng/ mL) were detected by real-time fluorescent quantitative PCR and Western blotting, respectively. Results: RhG-CSF promoted the proliferation of HL-60 and THP-1 cells (both P < 0.01). Compared with the As2O3 group, rhG-CSF pre-treatment combined with 2 μmol/L As2O3 inhibited the proliferation of HL-60 and THP-1 cells (both P < 0.05), rhG-CSF combined with different concentrations of As2O3 increased the apoptotic rates of HL-60 and THP-1 cells (both P < 0.05). As2O3 caused G0/G1 arrest in HL-60 and THP-1 cells (both P < 0.05). rhG-CSF caused S-phase arrest in HL-60 and THP-1 cells (both P < 0.01), the effect was more obvious in rhG-CSF combined with As2O3 group (both P < 0.05). The expressions of AQP9 mRNA and protein in HL-60 and THP-1 cells were lower than those in NB4 cells (all P < 0.01). Compared with the untreated control group, 100 ng/mL rhG-CSF up-regulated the expression levels of AQP9 mRNA and protein in HL-60 and THP-1 cells (all P < 0.05). Conclusion: RhG-CSF can increase the sensitivity of non-M3 AML cells to As2O3, which may be associated with the up-regulation of AQP9 expression.