The crystal and molecular structure of diethyl l-(p-toluenesulfon-amido ) - p chlofoPhenylmet hylphosphonate has been determined by X- ray d iffractionmethod- The crystal (C18,H23,ClNO5PS) is monoclinic with space gro...The crystal and molecular structure of diethyl l-(p-toluenesulfon-amido ) - p chlofoPhenylmet hylphosphonate has been determined by X- ray d iffractionmethod- The crystal (C18,H23,ClNO5PS) is monoclinic with space group P21/c, a =8. 162(6), b= l8. O64(7), c= l4. 362(4) A, β=96. 29(3)°, V=2lO4. 7 A3, M.=431, 88, Z=4, Dx= l. 364 g/cm3, μ, = 3. 765 cm-1, F(000) = 904, R=0. 047 andRw=0. 0049 for 998 reflections with I>3σ(I). The 1H NMR spetrum of the title com-pound shows that the two ethoxy groups are magnetic nonequivalent, which is in agree-ment with its X-ray analysis result-展开更多
文摘目的探讨在缺氧缺血清环境下,脯氨酸羟化酶抑制剂——二甲基乙二酰甘氨酸(DMOG)促进骨髓间充质干细胞(MSCs)血管新生的作用及其机制。方法 MSCs从大鼠骨髓中分离得到,分为:常氧条件下溶剂对照组(N-DMSO)、缺氧条件下溶剂对照组(H-DMSO)、20μM DMOG加药组(D-20μM)、100μM DMOG加药组(D-100μM)及500μM DMOG加药组(D-500μM),观察以下指标:(1)通过缺氧条件下CCK-8检测DMOG在20μM、100μM及500μM剂量下对MSCs的保护作用,确定DMOG的最佳剂量;(2)通过Matrigel实验观察DMOG促进MSCs血管新生的作用;(3)通过Western blot法检测血管新生通路相关蛋白表达。结果 (1)不同浓度组DMOG对缺氧损伤MSCs的影响:N-DMSO组OD值3.25±0.05,H-DMSO组2.23±0.14,D-20μM组2.68±0.43,D-100μM组3.11±0.25,D-500μM组3.23±0.04。与N-DMSO组比较,H-DMSO组OD值降低(P<0.01),与H-DMSO组比较,D-20μM组、D-100μM组、D-500μM OD值均升高(P<0.05或0.01)。(2)不同浓度组DMOG对正常MSCs的影响:D-20μM组3.19±0.02,D-100μM组3.15±0.06,D-500μM组2.51±0.08。与N-DMSO组比较,D-500μM组OD值降低(P<0.01),D-20μM组、D-100μM组与N-DMSO组比较差异均无统计学意义(均P>0.05),提示DMOG在20μM及100μM对细胞无毒性。(3)血管新生相关蛋白的表达:与H-DMSO组相比,D-100μM组缺氧3、6及24h HIF-1α均增加(1.44±0.32 vs 7.79±0.23,2.4±0.28 vs 3.51±0.79,0.93±0.37 vs2.46±0.07,P<0.05或0.01),p AKT则在缺氧6h增加(0.47±0.15 vs 0.71±0.03,P<0.05),VEGF在缺氧6、24h均增加(0.63±0.10 vs 0.87±0.14,0.42±0.06 vs 0.70±0.06,P<0.05或0.01),以缺氧24h最为显著。pm TOR/m TOR及p ERK/ERK蛋白两组比较差异均无统计学意义(均P>0.05)。结论 DMOG通过抑制HIF-1α降解及促进AKT磷酸化提高缺氧环境下MSCs的血管新生能力。
文摘The crystal and molecular structure of diethyl l-(p-toluenesulfon-amido ) - p chlofoPhenylmet hylphosphonate has been determined by X- ray d iffractionmethod- The crystal (C18,H23,ClNO5PS) is monoclinic with space group P21/c, a =8. 162(6), b= l8. O64(7), c= l4. 362(4) A, β=96. 29(3)°, V=2lO4. 7 A3, M.=431, 88, Z=4, Dx= l. 364 g/cm3, μ, = 3. 765 cm-1, F(000) = 904, R=0. 047 andRw=0. 0049 for 998 reflections with I>3σ(I). The 1H NMR spetrum of the title com-pound shows that the two ethoxy groups are magnetic nonequivalent, which is in agree-ment with its X-ray analysis result-