Mehlich 1(M1), mehlich 3(M3) and CaCl 2 DTPA have been used to predict the available micronutrient in soil. However, the forms of micronutrient extractable by these extractants are not known. In the present study, t...Mehlich 1(M1), mehlich 3(M3) and CaCl 2 DTPA have been used to predict the available micronutrient in soil. However, the forms of micronutrient extractable by these extractants are not known. In the present study, ten soils, collected from five provinces and the capital of China, representing a wide range of chemical and physical properties, were analyzed by sequential extraction to isolate five forms of cobalt and nickel, they are exchangeable, carbonate bound, Fe Mn oxide bound, organically bound and residual forms. The chemical forms extracted by M1, M3 and CaCl 2 DTPA were also investigated. The results show strong correlation between the carbonate bound or organically bound forms of Co or Ni and the amounts of extractable by any of the above three extractants. The main forms extracted by these extractants are carbonate and organically bound forms. The ranking of these three extractants for extraction of Co and Ni are M1>M3=CaCl 2 DTPA and M1=M3>CaCl 2 DTPA, respectively.展开更多
肝再生磷酸酶2(phosphatase of regenerating liver 2,PRL2)属于肝再生磷酸酶家族,在人体各个组织器官中广泛表达。PRL2异常高表达与肿瘤的发生发展和临床预后密切相关,是多种癌症的潜在治疗靶点。研究表明PRL2通过两种机制发挥促癌作用...肝再生磷酸酶2(phosphatase of regenerating liver 2,PRL2)属于肝再生磷酸酶家族,在人体各个组织器官中广泛表达。PRL2异常高表达与肿瘤的发生发展和临床预后密切相关,是多种癌症的潜在治疗靶点。研究表明PRL2通过两种机制发挥促癌作用:一是依赖假磷酸酶活性,主要与镁离子转运体CNNM3结合;二是凭借磷酸酶活性,使底物分子PTEN等去磷酸化。因此,阻断PRL2与CNNM3结合或抑制PRL2磷酸酶活性有望成为新的抗癌策略。现综述了PRL2与不同癌症的联系、其促癌分子机制和抑制剂的最新研究进展。展开更多
文摘Mehlich 1(M1), mehlich 3(M3) and CaCl 2 DTPA have been used to predict the available micronutrient in soil. However, the forms of micronutrient extractable by these extractants are not known. In the present study, ten soils, collected from five provinces and the capital of China, representing a wide range of chemical and physical properties, were analyzed by sequential extraction to isolate five forms of cobalt and nickel, they are exchangeable, carbonate bound, Fe Mn oxide bound, organically bound and residual forms. The chemical forms extracted by M1, M3 and CaCl 2 DTPA were also investigated. The results show strong correlation between the carbonate bound or organically bound forms of Co or Ni and the amounts of extractable by any of the above three extractants. The main forms extracted by these extractants are carbonate and organically bound forms. The ranking of these three extractants for extraction of Co and Ni are M1>M3=CaCl 2 DTPA and M1=M3>CaCl 2 DTPA, respectively.
文摘肝再生磷酸酶2(phosphatase of regenerating liver 2,PRL2)属于肝再生磷酸酶家族,在人体各个组织器官中广泛表达。PRL2异常高表达与肿瘤的发生发展和临床预后密切相关,是多种癌症的潜在治疗靶点。研究表明PRL2通过两种机制发挥促癌作用:一是依赖假磷酸酶活性,主要与镁离子转运体CNNM3结合;二是凭借磷酸酶活性,使底物分子PTEN等去磷酸化。因此,阻断PRL2与CNNM3结合或抑制PRL2磷酸酶活性有望成为新的抗癌策略。现综述了PRL2与不同癌症的联系、其促癌分子机制和抑制剂的最新研究进展。
