Objective:To determine the expression profile and potential roles of CD24 in oral squamous cell carcinoma and explore the values of CD24 function as a potential target of clinical therapy.Me-thods:Semi-quantitative immunohistochemistry was used to construct the expression profile of CD24 in 78 human oral tissues and 59 Hamster buccal pouch tissues.Real-time RT-PCR and Western blot were used to analyze the CD24 expression levels in oral DOK4 cells,oral cancer CAL-27 and WSU-HN6 cells. Then these two cancer cell lines were selected to evaluate the effect of all-trans retinoic acid (ATRA)and CD24 antibody on CD24 expression,and the proliferation and tumorsphere formation capacity of these two cell lines.Results:CD24 expression was found significantly elevated in both human and animal tissues compared with normal and benign tissues (P<0.05),as well as in oral cancer CAL-27 and WSU-HN6 cells compared with DOK cells (P<0.05).CAL-27 and WSU-HN6 cells possess increased proliferative and specific tumorsphere formation capability compared with DOK cells (P<0.05 ).Both ATRA and CD24 antibody were able to effectively inhibit the proliferation and tumorsphere formation of CAL-27 and WSU-HN6 cells (P<0.05).Among them ATRA at least involved partially in the proliferation by down-regulating the CD24 expression (P<0.05 ),while CD24 antibody blocking had no effect on the CD24 expression.Conclusion:CD24 was upregulated in oral cancer and functioned as a potential factor that promoted the proliferation and tumorsphere formation of CAL-27 and WSU-HN6 cells.Both ATRA and CD24 antibody might effectively inhibit the proliferation and tumorsphere formation of CAL-27 and WSU-HN6 cells and function as a potential therapy target.

OBJECTIVE: To build the multiple drug resistant human laryngeal cancer cell line and investigate its characteristics. METHOD: Human laryngeal cancer cells were exposed in stepwise escalating concentration of Taxol until the resistant cell line was developed. The IC50 and the resistance folds of multidrug resistance were detected by an ATP assay. The differences of cell cycle distribution, apoptosis, and Rhodamine accumulation between Hep-2 and Hep-2T cells were studied through flow cytometry. The MDR1 and MRP1 gene were detected through realtime quantitative RT-PCR, and the corresponding protein was detected through western-blotting. RESULT: A multidrug resistance cell line-Hep-2T induced by Taxol was effectively developed, whose drug resistance was 104 times that of Hep-2 cells. Doxorubicin, Gemcitabine, 5-Fu, Cisplatin all increased the drug resistance by 46.78, 1.95, 2.50, 1.05 folds. The cell cycle distribution altered. The apoptosis of Hep-2 cells was quite greater than that of Hep-2T cells (45.32% vs 4.26%, P < 0.01, flow cytometry), (54.47 +/- 48.95 vs 9.84 +/- 12.53 P < 0.01, hoechst staining) after Hep-2 and Hep-2T exposed to Taxol at IC50 to Hep-2. The copy ratio of MDR1/GAPDH mRNA of Hep-2T was 64.2 +/- 36.7 times that of Hep-2 (P < 0.05), while MRP1/GAPDH of Hep-2T was only 1.20 +/- 0.09 folds more than that of Hep-2 (P < 0.05). The proteins of MDR1/P-gp were greatly over expressed in Hep-2T cells compared with Hep-2 cells (P < 0.01) whose was in the same trend (P < 0.05), while the elevated expression of MRP1 was lower than that of MDR1/P-gp. CONCLUSION When considering the possible methods to reverse MDR of SCCHN, more emphasis should be laid on MDR1/P-gp, and when combining this with chemotherapy the non-P-gp substrate chemotherapeutic agents should be considered. At the same time, more attention should be paid to the changes of cell cycle distribution during the drug selection.
Cell Culture Techniques ; methods ; Cell Line, Tumor ; drug effects ; Drug Resistance, Multiple ; drug effects ; Drug Resistance, Neoplasm ; drug effects ; Humans ; Paclitaxel ; pharmacology

OBJECTIVE: To investigate the therapeutic outcomes of Laryngectomy and prognostic factors in senile patients with laryngeal carcinoma. METHOD: A retrospective study of long-term therapeutic outcomes was performed on 110 patients with laryngeal carcinoma over 65, treated mainly by surgery, from 1990 to 2005. Different kinds of operations were as follows: cordectomy(1 case) or stripping (2 cases) by suspended laryngoscope, laryngofissure (4 cases), vertical partial laryngectomy without tracheotomy (8 cases), vertical partial laryngectomy (8 cases), extended vertical partial laryngectomy (1 case), horizontal laryngectomy (4 cases), subtotal laryngectomy (4 cases), cricohyoidoepiglottopexy (30 cases), Arslan's procedure (8 cases), and total laryngectomy (40 cases). Forty-eight patients were treated with preoperative or postoperative radiotherapy, and five patients were treated with induction chemotherapy followed by radiotherapy. RESULT: There were four missing cases among all 110 cases. The 5- and 10-year overall survival rate were 66.6% and 44.2%, respectively. The 5- and 10-year diseases-free survival rate were 57.0% and 38.4%, respectively. The median survival was 84 months. Decannulation rate was 87.1% (54/62). Well-differentiation, surgery alone, node-negative, glottic carcinoma, early stage, partial laryngectomy, non-recurrence and male were favorable prognostic factors with univariate analysis (P < 0. 05). Well-differentiation and surgery without combined therapy were also favorable prognostic factors with multivariate analysis. CONCLUSION Conservation laryngectomy was an efficient method to treat senile patients with laryngeal carcinoma. Combined therapy should better not be adopted to patients with negative surgical margins.
Aged ; Aged, 80 and over ; Carcinoma, Squamous Cell ; diagnosis ; surgery ; Female ; Humans ; Laryngeal Neoplasms ; diagnosis ; surgery ; Laryngectomy ; methods ; Male ; Neoplasm Staging ; Prognosis ; Retrospective Studies ; Survival Rate ; Treatment Outcome

Objective 3D-scanning system is put in use to evaluate the comparative effect be-tween the cell-assisted lipotransfer (CAL) and traditional autologous fat transplantation ,which aims to definitize the survival rate of fat after CAL and provide a reference for the clinic .Methods Fourteen cases were collected among patients aquiring facial autologous fat transplantation from February to May 2016 from the hospital out-patient department ,which were then divided into two groups equally and randomly .7 patients used traditional autologous fat transplantation form the control group and the rest 7 used the CAL .Autologous fat sample of the CAL group was grafted with stromal vascular frac-tion (SVF) .All the patients received follow-up examination and the period lasted at least 6 months . 3D-scanning of facial models were conducted sometime before surgery ,a week after surgery and also 3 months after surgery .Results The average transplantation volume of CAL group was 13 .86 ml while the control group was 12 .14 ml .There were no significantly differnt in the transplantation volumes of the fat (P > 0 .05) .The survival rate of fat in CAL group was 37 .82％ while the control group was 27 .54％ after calculating the changing volume from the facial models .The survival rate of fat in CAL group was significantly higher than that in the control group (P < 0 .05) .Conclusions 3D-scanning system can provide the data concerning the lipotransfer and calculate the survival rate of the fat .CAL can raise the survival rate of the fat .