Study on the relationship between immune cell infiltration pattern and clinical characteristics and prognosis of cervical cancer based on TCGA database

Objective:To investigate the correlation between immune cell infiltration pattern and clinical features and prognosis of cervical carcinoma.Methods:All cervical cancer transcript data and related clinical data were downloaded from the public database Cancer Genome Atlas(TCGA),and the relative proportions of 22 invasive immune cell types were calculated by Cibersort software.Perl was used to assess the correlation between the pattern of immune cell invasion and clinical characteristics(age,clinical stage,tumor grade)in cervical cancer,and the correlation between the pattern of immune cell invasion and survival in cervical cancer was calculated by the K-M Log-Rank method.Result:The distribution of immune cells in 306 cases of cervical cancer and 3 cases of normal tissues was assessed using Cibersort.Compared with normal tissues,the contents of resting dendritic cells,activated dendritic cells,M1 macrophages and activated CD4+memory T cells were higher;the contents of M2 macrophages,neutrophils,regulatory T cells and activated mast cells were lower in cervical cancer tissues.The contents of M1 macrophages,unactivated CD4+memory T cells,andγδT cells were positively correlated with patient age(P<0.05).The contents of follicular helper T cells,activated and unactivated natural killer(NK)cells,and naive CD4 T cells were negatively correlated with patient age(P<0.05).Those with high resting dendritic cell composition had shorter overall survival,while those with high follicular helper T cell composition had longer overall survival(P<0.05).Conclusion:Compared with normal tissues,the composition of immune cells in cervical cancer tissues has certain specificity,which can provide reference for the early screening and diagnosis of the disease.Patients in different age groups may have different immune cell infiltration patterns,which can be used as a basis to explore drug targets in clinical practice.Resting dendritic cells and follicular helper T cells in cervical cancer can be used as possible efficacy predictors of clinical immunotherapy for cervical cancer.

CLINICAL SIGNIFICANCES OF THE EXPRESSION OF METALLO- THIONEIN IN FIVE TYPES EPITHELIUM CELL CANCER

Objective： To study the expressions of （CSC）, bladder transitional cell cancer metallothionein and the significances in cervical squamous cell cancer （BTC）, esophageal squamous cell cancer （ESC）, gastral tubular adenocarcinoma （GC） and large intestinal tubular adenocarcinoma （LIC）. Methods： lmmunohistochemical method was used to examine the expression rates of MT in five types of cancer tissue. Results： The expression rates of MT were 75.00% （24/32） in ESC, 52.27% （46/88） in GTC, 59.46% （44/74） in LIC, 64.86% （48/74） in BTC and 58.57% （41/70） in CSC respectively. The positive rates of MT expression were higher in low differentiation and deep muscular group than those in medium or high differentiation and superficial muscular invasion group （P〈0.05）. Conclusion： The expression of MT is related to differentiation degree and invasion degree.

EXPERIMENTAL AND CLINICAL STUDY OF CONCOMITANT RADIATION THERAPY AND CHEMOTHERAPY FORCERVICAL CARCINOMA

The results of in vitro Hela cell experiment and human cervical cancer in nude mice therapeutic trial skowed that combined anticancer drugrs and radiation bad more marked anticancer effect than radiation alone.On the bases of experiment,25 patients with carcinoma of uterine cervix,FIGO stage Ib-IV,were chosen for our study.A weskly 60Co intracavitacy irradliatiou plus cisplatin(30 mg/M2) and bleomycin(15 mg/M2) were glven to 11/25 cases,while the remaining 14,radiotherapy alone.The former group sbowed a superior response in tumor regression and histological improvement than the later one.The toxic side effect was acceptable.The results indicate that concomitant radiation therapy and chemotherapy may be benefit for treating cervicai carcinoma.

Effects of phosphatidylinositol 3-kinase inhibitor on humancervical carcinoma cells in vitro

Phosphatidylinositol 3-kinase(PI3K)is a crucial cell survival pathway implicated in tumorigenesis because of its role in stimulating cell proliferation and suppressing apoptosis.This study was to investigate the regulation of proliferation and apoptosis by LY294002,an inhibitor of PI3K in cervical cancer cells and the expression of FLICE-like inhibitory protein(c-FLIP)in vitro.Human cervical cancer HeLa cells were used in this experiment and cultured.The cultured cells were treated with LY294002 at different concentrations(10,25,50 and 100µmol/L)for 6,12,24,and 48 h before harvesting for evaluation.Cell viability was measured by 3-(4,5)-dimethylthiazol(-2-y1)-3,5-di-phenyltetrazoliumbromide(MTT)assay.Apoptosis was analyzed byflow cytometry.The expression of c-FLIP was detected by Western blot.Cell viability was inhibited by LY294002 significantly(P<0.05).Flow cytometry analysis revealed that cell apoptosis was significantly increased in the presence of LY294002 as compared with the control group.Although the expression of c-FLIP was increased in a short time,the expression of c-FLIP was markedly suppressed after the treatment of LY294002 for 48 h.These results suggested that the PI3K/Akt signal pathway might be involved in the regulation of cell apoptosis in cervical cancer cells.Moreover,the regulation of c-FLIP expression through PI3K/Akt signal pathway in cervical cancer cells was observed in vitro.