Immunotherapy has shown great promise in treating various types of malignant tumors.However,some patients with gastrointestinal cancer have been known to experience rapid disease progression after treatment,a situatio...Immunotherapy has shown great promise in treating various types of malignant tumors.However,some patients with gastrointestinal cancer have been known to experience rapid disease progression after treatment,a situation referred to as hyperprogressive disease(HPD).This minireview focuses on the definitions and potential mechanisms of HPD,natural disease progression in gastrointestinal malignancies,and tumor immunological microenvironment.展开更多
Rat calvarial osteoblasts were treated with lanthanum chloride（LaCl3） to explore its effect on the mineral crystalline phase during the process of osteoblast calcification in uitro.The results confirmed that La was ...Rat calvarial osteoblasts were treated with lanthanum chloride（LaCl3） to explore its effect on the mineral crystalline phase during the process of osteoblast calcification in uitro.The results confirmed that La was readily deposited in the mineral component of the matrix.Employing high-resolution transmission electron microscopy and Fourier transform infrared microspectroscopy techniques,we demonstrated that features comparable to dicalcium phosphate dihydrate（DCPD） and octacalcium phosphate,and hydroxyapatite（HAP） were detected in the mineral phases in uitro.Particularly,LaCl3 treatment retarded conversion from DCPD-like phase into HAP during mineralization.In addition,La was introduced in DCPD powder during wet chemical synthesis.When compared with that of La-free DCPD,the dissolution rate of La-incorporated DCPD was lower,thereby leading to a delayed DCPD-to-HAP phase transformation.Thus,it can be concluded that LaCl3 treatment influences the kinetics of inorganic phase transition by decreasing the dissolution rate of DCPD.展开更多
文摘Immunotherapy has shown great promise in treating various types of malignant tumors.However,some patients with gastrointestinal cancer have been known to experience rapid disease progression after treatment,a situation referred to as hyperprogressive disease(HPD).This minireview focuses on the definitions and potential mechanisms of HPD,natural disease progression in gastrointestinal malignancies,and tumor immunological microenvironment.
基金supported by the National Natural Science Foundation of China(No.21101008)
文摘Rat calvarial osteoblasts were treated with lanthanum chloride（LaCl3） to explore its effect on the mineral crystalline phase during the process of osteoblast calcification in uitro.The results confirmed that La was readily deposited in the mineral component of the matrix.Employing high-resolution transmission electron microscopy and Fourier transform infrared microspectroscopy techniques,we demonstrated that features comparable to dicalcium phosphate dihydrate（DCPD） and octacalcium phosphate,and hydroxyapatite（HAP） were detected in the mineral phases in uitro.Particularly,LaCl3 treatment retarded conversion from DCPD-like phase into HAP during mineralization.In addition,La was introduced in DCPD powder during wet chemical synthesis.When compared with that of La-free DCPD,the dissolution rate of La-incorporated DCPD was lower,thereby leading to a delayed DCPD-to-HAP phase transformation.Thus,it can be concluded that LaCl3 treatment influences the kinetics of inorganic phase transition by decreasing the dissolution rate of DCPD.
