目的探究布托啡诺(BUT)调节叉头框蛋白O3(FOXO3)-叉头框蛋白M1(FOXM1)信号轴对骨肉瘤细胞生物活性和化疗药物耐药性的影响。方法将2.0μmol/L顺铂(CDDP)处理的CDDP耐药MG-63细胞(MG-63/CDDP)分为对照组(MG-63/CDDP细胞用含0.05g/dl DMS...目的探究布托啡诺(BUT)调节叉头框蛋白O3(FOXO3)-叉头框蛋白M1(FOXM1)信号轴对骨肉瘤细胞生物活性和化疗药物耐药性的影响。方法将2.0μmol/L顺铂(CDDP)处理的CDDP耐药MG-63细胞(MG-63/CDDP)分为对照组(MG-63/CDDP细胞用含0.05g/dl DMSO培养液处理)、BUT组(40μg/ml BUT处理MG-63/CDDP细胞)、JY-2组(用100μmol/L FOXO3-FOXM1抑制剂JY-2处理MG-63/CDDP细胞)和BUT+JY-2组(用40μg/ml BUT以及100μmol/L JY-2处理MG-63/CDDP细胞)。CCK8法检测MG-63/CDDP细胞活性;流式细胞术检测MG-63/CDDP细胞凋亡情况;Transwell法检测MG-63/CDDP细胞迁移、侵袭情况;Western blot检测自噬蛋白以及FOXO3-FOXM1信号通路相关蛋白表达。结果与MG-63细胞相比,MG-63/CDDP细胞IC50增加(20.56±2.52μmol/L vs 0.97±0.10μmol/L),差异具有统计学意义(q=19.017,P<0.05),筛选出较适浓度1μmol/L CDDP用于后续实验。与对照组相比,BUT组MG-63/CDDP细胞A值(0.43±0.05 vs 0.68±0.06),细胞迁移数量(63.63±7.58个vs114.56±10.57个)以及侵袭数量(43.38±4.58个vs 79.56±8.48个)、自噬相关蛋白Beclin1(0.31±0.05 vs 0.62±0.07)和微管相关蛋白轻链3(LC3)-II/I蛋白(0.51±0.08 vs 0.98±0.11)水平均下降(q=6.763~9.591,均P<0.05),凋亡率(28.57%±3.14%vs 8.67%±1.46%),FOXO3(0.72±0.08 vs 0.33±0.04),FOXM1(1.22±0.15 vs 0.70±0.08)蛋白水平均上升(q=14.077,10.681,7.493,均P<0.05),而JY-2组MG-63/CDDP细胞A值(0.99±0.13 vs0.68±0.06),细胞迁移数量(147.59±15.37个vs 114.56±10.57个)以及侵袭数量(111.83±12.58个vs 79.56±8.48个),Beclin1(0.94±0.11 vs 0.62±0.07),LC3-II/I蛋白(1.27±0.13 vs 0.98±0.11)水平均升高(q=4.171~6.012,均P<0.05),凋亡率(4.56%±0.86%vs 8.67%±1.46%),FOXO3(0.17±0.01 vs 0.33±0.04),FOXM1(0.46±0.03 vs 0.70±0.08)蛋白水平降低(q=5.941,9.505,6.881,均P<0.05),差异具有统计学意义。JY-2逆转了BUT对MG-63/CDDP细胞活性和化疗耐药性的有利影响。结论BUT可能通过激活FOXO3-FOXM1信号通路调节骨肉瘤细胞的细胞活性和CDDP耐药性。展开更多
AIM To provide evidence regarding the postoperative treatment of patients with T4 b N1-3 M0/Tx N3 b M0 gastric cancer, for which guidelines have not been established. METHODS Patients who had undergone curative resect...AIM To provide evidence regarding the postoperative treatment of patients with T4 b N1-3 M0/Tx N3 b M0 gastric cancer, for which guidelines have not been established. METHODS Patients who had undergone curative resection between 1996 and 2014 with a pathological stage of T4 b N1-3 M0/Tx N3 b M0 for gastric cancer were retrospectively analyzed; staging was based on the 7 th edition of the American Joint Committee on Cancer staging system. The clinicopathological characteristics, administration of adjuvant chemotherapy, and patterns of recurrence were studied. Univariate and multivariate analyses of prognostic factors were conducted. The chemotherapeutic agents mainly included fluorouropyrimidine, platinum and taxanes, used as monotherapy, doublet, or triplet regimens. Patterns of first recurrence were categorized as locoregional recurrence, peritoneal dissemination, or distant metastasis.RESULTS The 5-year overall survival(OS) of the whole group(n = 176) was 16.8%, and the median OS was 25.7 mo(95%CI: 20.9-30.5). Lymphovascular invasion and a node positive rate(NPR) ≥ 0.8 were associated with a poor prognosis(P = 0.01 and P = 0.048, respectively). One hundred forty-seven(83.5%) of the 176 patients eventually experienced recurrence; the most common pattern of the first recurrence was distant metastasis. The prognosis was best for patients with locoregional recurrence and worst for those with peritoneal dissemination. Twelve(6.8%) of the 176 patients did not receive adjuvant chemotherapy, while 164(93.2%) patients received adjuvant chemotherapy. Combined chemotherapy, including doublet and triplet regimens, was associated with a better prognosis than monotherapy, with no significant difference in 5-year OS(17.5% vs 0%, P = 0.613). The triplet regimen showed no significant survival benefit compared with the doublet regimen for 5-year OS(18.5% vs 17.4%, P = 0.661). Thirty-nine(22.1%) patients received adjuvant chemotherapy for longer than six months; the median OS in patients who received adjuvant chemotherapy for longer than six months was 40.2 mo(95%CI: 30.6-48.2), significantly longer than the 21.6 mo(95%CI: 19.1-24.0) in patients who received adjuvant chemotherapy for less than six months(P = 0.001).CONCLUSION Patients with T4 b N1-3 M0/Tx N3 b M0 gastric cancer showed a poor prognosis and a high risk of distant metastasis. Adjuvant chemotherapy for longer than six months improved outcomes for them.展开更多
The long afterglow fluorescent material of M1-3xAl2O4:Eu2+ x/Dy3+2x(M2+= Sr2+, Ca2+ and Ba2+) phosphors are successfully synthesized by calcining precursor obtained via co-precipitation method at 1300oC for 4 h with r...The long afterglow fluorescent material of M1-3xAl2O4:Eu2+ x/Dy3+2x(M2+= Sr2+, Ca2+ and Ba2+) phosphors are successfully synthesized by calcining precursor obtained via co-precipitation method at 1300oC for 4 h with reducing atmosphere (20% H2 and 80% N2). The phase evolution, morphology and afterglow fluorescent properties are systematically studied by the various instruments of XRD, FE-SEM, PLE/PL spectroscopy and fluorescence decay analysis. The PL spectra shows that the Sr1-3xAl2O4:Eu2+x/Dy3+ 2x phosphors display vivid green emission at s519 nm (4f65d1!4f7 transition of Eu2+) with monitoring of the maximum excitation wavelength at s334 nm (8S7=2!6IJ transition of Eu2+), among which the optimal concentration of Eu2+ and Dy3+ is 15 at.% and 30 at.%, respectively. The color coordinates and temperature of Sr1-3xAl2O4:Eu2+ x/Dy3+ 2x phosphors are approximately at (s0.27, s0.57) and s6700 K, respectively. On the above basis, the M0:55Al2O4:Eu2+ 0:15/Dy3+ 0:3 (M2+= Ca2+ and Ba2+) phosphors is obtained by the same method. The PL spectra of these phosphors shows the strongest blue emission at s440 nm and cyan emission at s499 nm under s334 nm wavelength excitation, respectively, which are blue shifted comparing to Sr1??3xAl2O4:Eu2+ x/Dy3+ 2x phosphors. The color coordinates and temperatures of M0:55Al2O4:Eu2+ 0:15/Dy3+ 0:3 (M2+= Ca2+ and Ba2+) phosphors are approximately at (s0.18, s0.09), s2000 K and (s0.18, s0.42), s11600 K, respectively. In this work, long afterglow materials of green, blue and cyan aluminates phosphors with excellent properties have been prepared, in order to obtain wide application in the field of night automatic lighting and display.展开更多
Bacillus velezensis M3-1 strain isolated from the sediment of Myriophyllum aquatium con-structedwetlandswas found to efficiently convert NO_(3)^(-)-N to NO_(2)^(−)-N,and the requirements for carbon source additionwere...Bacillus velezensis M3-1 strain isolated from the sediment of Myriophyllum aquatium con-structedwetlandswas found to efficiently convert NO_(3)^(-)-N to NO_(2)^(−)-N,and the requirements for carbon source additionwere not very rigorous.Thiswork demonstrates,for the first time,the feasibility of using the synergy of anammox and Bacillus velezensis M3-1 microorganisms for nitrogen removal.In this study,the possibility of M3-1 that converted NO_(3)^(−)-N produced by anammox to NO_(2)^(−)-N was verified in an anaerobic reactor.The NO_(3)^(−)-N reduction ability of M3-1 and denitrifying bacteria in coupling system was investigated under different C/N conditions,and it was found that M3-1 used carbon sources preferentially over denitrifying bacteria.By adjusting the ratio of NH4+-N to NO_(2)^(−)-N,it was found that the NO_(2)^(−)-N con-verted from NO_(3)^(−)-N by M3-1 participated in the original anammox.The nitrogen removal efficacy(NRE)of the coupled system was increased by 12.1%,compared to the control group anammox system at C/N=2:1.Functional gene indicated that itmight be a nitrate reducing bacterium.This study shows that the nitrate reduction rate achieved by the Bacillus velezensis M3-1 can be high enough for removing nitrate produced by anammox process,which would enable improve nitrogen removal from wastewater.展开更多
文摘目的探究布托啡诺(BUT)调节叉头框蛋白O3(FOXO3)-叉头框蛋白M1(FOXM1)信号轴对骨肉瘤细胞生物活性和化疗药物耐药性的影响。方法将2.0μmol/L顺铂(CDDP)处理的CDDP耐药MG-63细胞(MG-63/CDDP)分为对照组(MG-63/CDDP细胞用含0.05g/dl DMSO培养液处理)、BUT组(40μg/ml BUT处理MG-63/CDDP细胞)、JY-2组(用100μmol/L FOXO3-FOXM1抑制剂JY-2处理MG-63/CDDP细胞)和BUT+JY-2组(用40μg/ml BUT以及100μmol/L JY-2处理MG-63/CDDP细胞)。CCK8法检测MG-63/CDDP细胞活性;流式细胞术检测MG-63/CDDP细胞凋亡情况;Transwell法检测MG-63/CDDP细胞迁移、侵袭情况;Western blot检测自噬蛋白以及FOXO3-FOXM1信号通路相关蛋白表达。结果与MG-63细胞相比,MG-63/CDDP细胞IC50增加(20.56±2.52μmol/L vs 0.97±0.10μmol/L),差异具有统计学意义(q=19.017,P<0.05),筛选出较适浓度1μmol/L CDDP用于后续实验。与对照组相比,BUT组MG-63/CDDP细胞A值(0.43±0.05 vs 0.68±0.06),细胞迁移数量(63.63±7.58个vs114.56±10.57个)以及侵袭数量(43.38±4.58个vs 79.56±8.48个)、自噬相关蛋白Beclin1(0.31±0.05 vs 0.62±0.07)和微管相关蛋白轻链3(LC3)-II/I蛋白(0.51±0.08 vs 0.98±0.11)水平均下降(q=6.763~9.591,均P<0.05),凋亡率(28.57%±3.14%vs 8.67%±1.46%),FOXO3(0.72±0.08 vs 0.33±0.04),FOXM1(1.22±0.15 vs 0.70±0.08)蛋白水平均上升(q=14.077,10.681,7.493,均P<0.05),而JY-2组MG-63/CDDP细胞A值(0.99±0.13 vs0.68±0.06),细胞迁移数量(147.59±15.37个vs 114.56±10.57个)以及侵袭数量(111.83±12.58个vs 79.56±8.48个),Beclin1(0.94±0.11 vs 0.62±0.07),LC3-II/I蛋白(1.27±0.13 vs 0.98±0.11)水平均升高(q=4.171~6.012,均P<0.05),凋亡率(4.56%±0.86%vs 8.67%±1.46%),FOXO3(0.17±0.01 vs 0.33±0.04),FOXM1(0.46±0.03 vs 0.70±0.08)蛋白水平降低(q=5.941,9.505,6.881,均P<0.05),差异具有统计学意义。JY-2逆转了BUT对MG-63/CDDP细胞活性和化疗耐药性的有利影响。结论BUT可能通过激活FOXO3-FOXM1信号通路调节骨肉瘤细胞的细胞活性和CDDP耐药性。
文摘AIM To provide evidence regarding the postoperative treatment of patients with T4 b N1-3 M0/Tx N3 b M0 gastric cancer, for which guidelines have not been established. METHODS Patients who had undergone curative resection between 1996 and 2014 with a pathological stage of T4 b N1-3 M0/Tx N3 b M0 for gastric cancer were retrospectively analyzed; staging was based on the 7 th edition of the American Joint Committee on Cancer staging system. The clinicopathological characteristics, administration of adjuvant chemotherapy, and patterns of recurrence were studied. Univariate and multivariate analyses of prognostic factors were conducted. The chemotherapeutic agents mainly included fluorouropyrimidine, platinum and taxanes, used as monotherapy, doublet, or triplet regimens. Patterns of first recurrence were categorized as locoregional recurrence, peritoneal dissemination, or distant metastasis.RESULTS The 5-year overall survival(OS) of the whole group(n = 176) was 16.8%, and the median OS was 25.7 mo(95%CI: 20.9-30.5). Lymphovascular invasion and a node positive rate(NPR) ≥ 0.8 were associated with a poor prognosis(P = 0.01 and P = 0.048, respectively). One hundred forty-seven(83.5%) of the 176 patients eventually experienced recurrence; the most common pattern of the first recurrence was distant metastasis. The prognosis was best for patients with locoregional recurrence and worst for those with peritoneal dissemination. Twelve(6.8%) of the 176 patients did not receive adjuvant chemotherapy, while 164(93.2%) patients received adjuvant chemotherapy. Combined chemotherapy, including doublet and triplet regimens, was associated with a better prognosis than monotherapy, with no significant difference in 5-year OS(17.5% vs 0%, P = 0.613). The triplet regimen showed no significant survival benefit compared with the doublet regimen for 5-year OS(18.5% vs 17.4%, P = 0.661). Thirty-nine(22.1%) patients received adjuvant chemotherapy for longer than six months; the median OS in patients who received adjuvant chemotherapy for longer than six months was 40.2 mo(95%CI: 30.6-48.2), significantly longer than the 21.6 mo(95%CI: 19.1-24.0) in patients who received adjuvant chemotherapy for less than six months(P = 0.001).CONCLUSION Patients with T4 b N1-3 M0/Tx N3 b M0 gastric cancer showed a poor prognosis and a high risk of distant metastasis. Adjuvant chemotherapy for longer than six months improved outcomes for them.
基金the National Natural Science Foundation of China (No. 51602126)the National Key Research and Development Plan of China (No. 2016YFB0303505)+1 种基金China and University of Jinan Postdoctoral Science Foundation (No. 2017M622118 and XBH1716)the 111 Project of International Corporation on Advanced Cement-based Materials (D17001).
文摘The long afterglow fluorescent material of M1-3xAl2O4:Eu2+ x/Dy3+2x(M2+= Sr2+, Ca2+ and Ba2+) phosphors are successfully synthesized by calcining precursor obtained via co-precipitation method at 1300oC for 4 h with reducing atmosphere (20% H2 and 80% N2). The phase evolution, morphology and afterglow fluorescent properties are systematically studied by the various instruments of XRD, FE-SEM, PLE/PL spectroscopy and fluorescence decay analysis. The PL spectra shows that the Sr1-3xAl2O4:Eu2+x/Dy3+ 2x phosphors display vivid green emission at s519 nm (4f65d1!4f7 transition of Eu2+) with monitoring of the maximum excitation wavelength at s334 nm (8S7=2!6IJ transition of Eu2+), among which the optimal concentration of Eu2+ and Dy3+ is 15 at.% and 30 at.%, respectively. The color coordinates and temperature of Sr1-3xAl2O4:Eu2+ x/Dy3+ 2x phosphors are approximately at (s0.27, s0.57) and s6700 K, respectively. On the above basis, the M0:55Al2O4:Eu2+ 0:15/Dy3+ 0:3 (M2+= Ca2+ and Ba2+) phosphors is obtained by the same method. The PL spectra of these phosphors shows the strongest blue emission at s440 nm and cyan emission at s499 nm under s334 nm wavelength excitation, respectively, which are blue shifted comparing to Sr1??3xAl2O4:Eu2+ x/Dy3+ 2x phosphors. The color coordinates and temperatures of M0:55Al2O4:Eu2+ 0:15/Dy3+ 0:3 (M2+= Ca2+ and Ba2+) phosphors are approximately at (s0.18, s0.09), s2000 K and (s0.18, s0.42), s11600 K, respectively. In this work, long afterglow materials of green, blue and cyan aluminates phosphors with excellent properties have been prepared, in order to obtain wide application in the field of night automatic lighting and display.
基金supported by the National Natural Sci-ence Foundation of China(Nos.42177099,91951108,and 21976197)the Knowledge Innovation Program of Shenzhen(No.JSGG20191129112812329),and the CAS International Part-nership Program(No.121311KYSB20200017)the special fund of State Key Joint Laboratory of Environment Simula-tion and Pollution Control(No.21Z02ESPCR).
文摘Bacillus velezensis M3-1 strain isolated from the sediment of Myriophyllum aquatium con-structedwetlandswas found to efficiently convert NO_(3)^(-)-N to NO_(2)^(−)-N,and the requirements for carbon source additionwere not very rigorous.Thiswork demonstrates,for the first time,the feasibility of using the synergy of anammox and Bacillus velezensis M3-1 microorganisms for nitrogen removal.In this study,the possibility of M3-1 that converted NO_(3)^(−)-N produced by anammox to NO_(2)^(−)-N was verified in an anaerobic reactor.The NO_(3)^(−)-N reduction ability of M3-1 and denitrifying bacteria in coupling system was investigated under different C/N conditions,and it was found that M3-1 used carbon sources preferentially over denitrifying bacteria.By adjusting the ratio of NH4+-N to NO_(2)^(−)-N,it was found that the NO_(2)^(−)-N con-verted from NO_(3)^(−)-N by M3-1 participated in the original anammox.The nitrogen removal efficacy(NRE)of the coupled system was increased by 12.1%,compared to the control group anammox system at C/N=2:1.Functional gene indicated that itmight be a nitrate reducing bacterium.This study shows that the nitrate reduction rate achieved by the Bacillus velezensis M3-1 can be high enough for removing nitrate produced by anammox process,which would enable improve nitrogen removal from wastewater.
