ABSTRACT
The aim of study was to investigate the synergetic effect of B7-1 and CD40L co-stimulating pathway in the immunotherapy for lymphoma and to explore the effective manner of tumor vaccine for treating lymphoma. The lymphoma cell line A20 cells were inoculated into BALB/c mice as to establish A20-bearing mice model, the B7-1 and CD40L expression vector were alone or in combination directly injected into lymphoma of mice model, the PBS, vector pcDM8 and pcDNA3.1 were selected as controls so as to observe tumor growth. The pathological section and HE staining of tumor tissue were performed to observe the histological characteristics and the cell infiltration of lymphoma, the CCK-8 detection kit was used to analysis the splenic CTL cytotoxicity. The results showed that the intratumor injection of B7-1 and CD40L resulted in reduction of tumor size. Morphological observation of tumor revealed inflammatory cell infiltration in the tumors, massive necrosis and localization of tumor. CCK-8 kit detection indicated significant enhancement of splenic CTL cytotoxicity, the effect of B7-1 combined with CD40L was stronger than that of B7-1 or CD40L alone. It is concluded that B7-1 and CD40L show immunotherapeutic effect on lymphoma, and the effect becomes stronger when they are combined in treating lymphoma. Meanwhile, the intratumor injection may be considered as a safe and effective way for tumor vaccine.
Subject(s)
Animals , Male , Mice , B7-1 Antigen , Genetics , CD40 Ligand , Genetics , Drug Synergism , Genetic Vectors , Immunotherapy , Methods , Lymphoma , Pathology , Therapeutics , Mice, Inbred BALB C , Neoplasm Transplantation , Tumor Cells, CulturedABSTRACT
<p><b>OBJECTIVE</b>To explore the relationship of clinic features, lab findings, the origin of tumor cell as well as prognosis in Chinese patients with diffuse large B-cell lymphoma( DLBCL).</p><p><b>METHODS</b>Seventy four cases of primarily diagnosed DLBCL were analyzed. Immunohistochemistry stain was used to check the expressions of Bcl-6,CD10 and MUM1.</p><p><b>RESULTS</b>Among the 74 patients, the average age was 58.5 years, the ratio of male to female was 1.64:1. 23.2% (16/69) cases developed in lymph node, 15.9% (11/ 69) in the extra node area. Among 55 follow-up cases, 13 (23.6%) died, and 12 (92.3%) died in the first year after diagnosis. The prognosis analysis showed that diagnosed at age > 65 years (P = 0.036), and the international prognostic index (IPI) (P = 0.009) were independent prognostic factors; origin of tumor cell had a trend to be a prognostic factor, but no statistic difference (P = 0.086). beta2-MG and Bcl-6 expression had no relation with the prognosis.</p><p><b>CONCLUSION</b>The middle and old-aged male patients are the most common in DLBCL and the first-year mortality rate is higher. The age at diagnosis and IPI can predict the clinical outcome. The origin of tumor cell might suggest the prognosis.</p>
Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Child , Female , Humans , Male , Middle Aged , Age Factors , Follow-Up Studies , Immunohistochemistry , Lymphoma, Large B-Cell, Diffuse , Diagnosis , Metabolism , Pathology , Therapeutics , Prognosis , Survival AnalysisABSTRACT
Aim: To investigate the effects of insulin like growth factor1 (IGF-1) on apoptosis of cerebellar granule neurons (CGNs) induced by diphenylhydantoin (DPH) and its possible relationship with PI3K/Akt. Methods: Rat cerebellar granule neurons (CGNs), primarily cultured for 8 days, were co-incubated with 100 μmol·L-1 DPH and 1 μmol·L-1 IGF-1 for 48 h and then submitted to apoptotic analysis. CGNs, pretreated with 100 μmol·L-1 DPH and 1 μmol·L-1 IGF-1 for 48 h, were incubated with LY294002, a specific inhibitor of PI3K for 30 minutes, and then performed cell viability assays to explore the relationship of IGF-1 with PI3K/Akt pathway. Western blotting was employed to further study whether Akt was involved in the apoptotic effect of DPH and the protection of IGF-1. Results 1 μmol·L-1 IGF-1 demonstrated significant protective effects on apoptosis of CGNs treated with DPH, which could be abolished by LY294002, a specific inhibitor of PI3K/Akt pathway. IGF-1 also upregulated the activity of Akt in CGNs, which was markedly decreased by DPH. Conclusions: IGF-1 blocked the DPH-induced apoptosis of CGNs possibly through a PI3K/Akt dependent pathway.