The molecular characterization of self-antigens expressed by human malignancies that are capable of elicitation of anti-tumor immune responses in patients has been an active field in hematology, oncology, and tumor immunology. More than 2000 tumor antigens have been identified. These significant progresses have led to the renaissance of tumor immunology and studies on novel anti-tumor immunotherapies in lymphomas, other hematologic malignancies and tumors. However, despite of the progress in the identification of these self-tumor antigens, current antigen-specific immunotherapies for tumors are far less satisfactory than that expected, which reflects the urgent need to improve our understanding on the basic principles underlying the selection of these self-tumor antigens. In order to develop more effective antigen-specific anti-tumor immunotherapies and to monitor the responses to these immunotherapies in patients with lymphomas and other malignancies, many additional questions need to be addressed. In this brief review, the progress in the identification of tumor antigens in lymphomas and other malignancies was outlined and the new principles of self-tumor antigens and their significance for future immunotherapies to these malignancies were summarized.
Antigens, Neoplasm ; classification ; immunology ; therapeutic use ; Autoantigens ; classification ; immunology ; Hematologic Neoplasms ; therapy ; Humans ; Immunotherapy ; methods ; trends ; Lymphoma ; immunology ; therapy ; Neoplasms ; immunology ; therapy

Objective:To investigate the effect of silver diamine fluoride(SDF)on the bonding strength between dentine and glass ion-omer cement(GIC).Methods:1 2 extracted sound molars were prepared into dintine samples and distributed into sound dentine group and demineralized dentine group.According to the treatment methods,the samples in each group were respectively divided into 3 sub-groups:A(control group),B[coated with 38% Ag(NH3 )F2 ]and C(SDF treatment with additional lighting-curing)(n =20).Then a hand-mixed conventional glass ionomer cement Fuji IX was placed on the dentine surface.After 24 h,micro tensile bond strength test and scanning electron microscope (SEM)analysis were conducted.Results:The bonding strength of demineralized dentine was higher than that of sound dentine(P <0.01 ).SDF with additional lighting-curing treated dentine showed a higer bonding strength value than only SDF treated dentin(P <0.01 ).Conclusion:SDF may improve the bonding between dentine and GIC.

The fermentation conditions of alkaline lipase producing by Pseudomonas cepacia PCL-3 were optimized.Based on the analysis of single factorial experiments,dextrin was the most suitable carbon source,peptone and urea were the suitable compound nitrogen sources among the examined materials.Three significant factors(urea,inoculum and initial pH) were selected from the eight factors related to lipase production by Plaekett-Burman method,and were further optimized with response surface analysis.And then,steepest ascent procedures were applied to define the optimal response region of the three factors.The obtained optimal conditions were urea 0.15%,inoculum 3.05% and initial pH 8.38,under which conditions,the enzyme activity was improved from 25.37 U/ml to 48.88 U/ml,enhanced 1.93 folds.Starting from the flask conditions,the highest lipase activity of 47.69U/ml was achieved by batch fermentation in a 10 L fermentor after 52 h of the cultivation.

Pulsed field gel electrophoresis(PFGE)is a new type technique of gel electrophoresis which can be used to separate large DNA molecules.It has been widely applied to the karyotype analysis,identification of species groups,genetic orientation and genetic analysis for fungi.This article describes the principle,development and general manipulative procedure of PFGE,and elaborates the application in the molecular research of fungi.

Age of Onset ; Aged ; China ; epidemiology ; Humans ; Incidence ; Male ; Middle Aged ; Pneumoconiosis ; epidemiology ; mortality

0.05),but as formaldehyde concentration increased,the coefficient of DPC also increased gradually.Higher concentration exposure(1.0,3.0 mg/m~3)resulted in significant elevation of DPC amount compared with the control group(P

Mucosa-associated lymphoid tissue (MALT) lymphoma originated outside the lymph nodes is low grade malignant B cell lymphoma. It is the most frequent type of marginal zone non-Hodgkin's lymphoma, that usually occurs in the stomach, salivary gland, thyroid gland and orbital adnexa. Gastric MALT lymphoma accounts for 50% of MALT lymphoma. Gastric MALT lymphoma has been confirmed to relate with Helicobacter pylori (HP) infection, its main pathogenesis is immune reaction, but some patients with chromosome translocation have no response to HP eradication, suggesting presence of other unknown pathogenesis. The chromosome translocations in MALT lymphoma are t(11;18)(q21;q21), t(1;14)(p22;q32), t(14;18)(q32;q21), t(3;14)(p14.1;q32). Recent studies show some new chromosomal abnormalities such as 6q23.3/A20 and so on, which have some effects on clinical course and prognosis. MALT lymphoma with chromosome abnormalities usually activate common NF-κB molecular pathway, and persistent active NF-κB pathway drives tumor cell proliferative and active, resulting in lymphoma incidence. In this article, the advances in the etiology and pathogenesis of MALT lymphoma were reviewed.
Humans ; Lymphoma, B-Cell, Marginal Zone ; etiology ; genetics ; pathology ; Translocation, Genetic

Multiple myeloma is a neoplasm of mature and immature plasma cells, it remains an incurable disease using conventional chemotherapy and increasing aggressive approaches. In recent years, due to the better understanding of myeloma biology, genetics and tumor formation, there are lots of new active drugs or combinational chemotherapy regimens having been developed, such as proteasome inhibitors, immunomodulatory agents etc, they are more effective than conventional chemotherapy. This article summarizes the recent advances with the new options for the treatment of multiple myeloma.
Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Combined Modality Therapy ; Hematopoietic Stem Cell Transplantation ; Humans ; Multiple Myeloma ; drug therapy ; Oligopeptides ; therapeutic use

Objective To detect the expressions of CD70 mRNA and protein and to determine the methylation status of CD70 gene promoter in T cells from patients with systemic lupus erythematosus (SLE).Methods Peripheral blood CD4+ and CD8+ T cells were isolated from 15 patients with active SLE,15 patients with inactive SLE and 15 healthy control subjects.Real-time quantitative reverse transcription-PCR was carried out to quantify the mRNA expression of CD70,flow cytometry to determine the frequency of CD4+CD70+ and CD8+ CD70+ T cells,and bisulfite sequencing to evaluate the methylation status of CD70 gene promoter in CD4+ and CD8+ T cells.Differences in these parameters among these groups were analyzed by one-factor analysis of variance and SNK-q test.Results Compared with the healthy controls,the patients with active SLE and inactive SLE showed a significant increase in CD70 mRNA expression in CD4+ T cells (0.82 ± 0.12 and 0.73 ± 0.11 vs.0.45 ±0.09,F =53.017,P ＜ 0.01) and in the frequency of CD70+CD4+ T cells (80.30％ ± 11.04％ and 66.80％ ± 3.98％ vs.12.48％ ± 3.45％,F =311.517,P ＜ 0.01).Also,the expression of CD70 mRNA in CD4+ T cells and the frequency of CD70+CD4+ T cells were significantly higher in patients with active SLE than in patients with inactive SLE (both P ＜ 0.05).There was a positive correlation between the frequency of peripheral CD70+CD4+ T cells and disease activity in SLE in these patients (r =0.792,P ＜ 0.01).The average methylation index of the region between-600 bp and-300 bp of CD70 gene promoter in CD4+ T cells was 0.32 ± 0.05 and 0.36 ± 0.05 respectively in the patients with active and inactive SLE,significantly lower than that in the healthy controls (0.62 ± 0.05,F =152.64,P ＜ 0.01),and the patients with active SLE showed a significantly lower methylation index than those with inactive SLE (P ＜ 0.05).Conclusions The CD70 gene promoter in CD4+ T cells is significantly hypomethylated in patients with SLE,which may directly lead to the overexpression of CD70.

The effect of the complement C1q expression on total hepatic ischemia-reperfusion (I/R) injury in rats was investigated. Sixty healthy male Sprague Dawley (SD) rats weighing 180-200 g were randomly divided into 5 groups: sham-operation group (S group, n=12); group of I/R for 1 h (I/R 1 h group, n=12); group of I/R for 3 h (I/R 3 h group, n=12); group of I/R for 6 h (I/R 6 h group, n=12); group of I/R for 24 h (I/R 24 h group, n=12). The hepatic I/R model of rats was established, and liver tissues were obtained 1 h, 3 h, 6 h and 24 h after hepatic I/R, respectively. Furthermore, the tissues were stained using hematoxylin-eosin, and the liver injuries of rats were observed using a microscope. The malondialdehyde (MDA) level and superoxide dismutase (SOD) activity in liver tissue were determined. Real-time polymerase chain reaction (PCR) and Western blotting were used to detect the expression levels of C1q mRNA and protein, respectively. As compared with the S group, the histopathological changes in I/R 1 h-24 h groups were gradually aggravated with the extension of I/R time. As compared with the S group, SOD activity and MDA content in the I/R groups were reduced and increased respectively with the extension of I/R time (P<0.01). Furthermore, the C1q expression at mRNA and protein levels in the I/R groups (especially in the I/R 3 h group) was significantly higher than that in the S group (P<0.05). It is suggested that C1q expression may play a principal role in hepatic I/R injury, particularly at the early stage of perfusion.