Background and purpose:To investigate the induction of apoptosis by epigallocatechin-3-gallate(EGCG) in xenograft nude mice with human gastric cancer cells and its molecular mechanism. Methods:Human gastric cancer cells were planted into nude mice in order to establish the cancer model, the different dosages of EGCG were injected intraperitoneally in the nude mice. After treatment, flow cytometry (FCM) was used to detect the apoptosis of implanted tumor cells. Immunohistochemical staining was used to detect the expression of apoptosis-related genes like Bal-2 and Bax in implanted tumor.Results:EGCG significantly inhibited tumor growth after being injecting intraperitoneally in the nude mice. The apoptotic cells in implanted tumor could be detected by flow cytometry with PI staining. The expressions of Bax、Caspase-3 were upregulated and Bcl-2 expression was downregulated in implanted tumor.Conclusions:EGCG could significantly inhibit tumor growth in xenograft nude mice with human gastric cancer cells through inducing apoptosis. The down-regulation of Bcl-2 expression and up-regulation of Bax expression observed could result in the activation of Caspase-3, the pathway might account for the induction of apoptosis.

This study investigated the intracellular localization of asparagine synthetase (ASNS) in the relation with chemoresistance in leukemia. pIRES-GFP-ASNS-Flag/Neo expression vector was transiently tansfected into SK-N-MC cells and 297T cells respectively. Immunofluorescence and Western blot analysis were performed for cellular localization of ASNS respectively. U937 cells were treated with L-asparaginase for 48 h and examined for endogenous ASNS expression on plasma membrane by immunofluorescence staining. Immunofluorescence staining showed that the transiently expressed ASNS was partly localized on transfected-SK-N-MC cell surface. Moreover, Western blotting exhibited that ASNS expressed both in cytosol and on plasma membrane of transfected-293T cells. Immunofluorescence staining with anti-ASNS-specific monoclonal antibody revealed that endogenous ASNS was localized on the plasma membrane of U937 cells, except for its distribution in the cytosol. In addition, ASNS exhibited a higher expression on plasma membrane after treatment with L-asparaginase as compared with the untreated cells. It was concluded that the subcellular translocation of ASNS may play an important role in L-asparaginase resistance in leukemia cells.

Aim To investigate the arrest effect of diallyl disulfide(DADS) in the cell cycle of human nasopharyngeal carcinoma SW480 cell line and its molecular mechanism.Mothdes The growth inhibition effect of DADS of different concentrations on SW480 cell line was measured by MTT assay and cell counting.Phase distribution of cell cycle was analyzed by flow cytometry.Expression of Ubiquitin and FKBP was determined by Western blot.Results The MTT assay showed that DADS inhibited growth of SW480 cells significantly in a dose-dependent manner.Adding 25,35,50 and 70 mg?L-1 DADS for 48 hours,SW480 cell growth was suppressed by 18.67%,33.02%,49.12% and 66.86%,respectively.There were significant differences between the treated and controlled cases(P

Objective: To investigate the efficacy of alternative donor (AD) in the treatment of aplastic anemia (AA) in children. Methods: The clinical data of AA children who received AD HSCT in our center from Apr. 2010 to Dec. 2016 were retrospectively analyzed. The overall survival (OS) rate, implant success rate, incidence of acute and chronic graft-versus-host disease (GVHD) were statistically analyzed. Results: A total of 109 children with acquired AA, including 64 severe AA (SAA) , 32 very severe AA (VSAA) and 13 transfusion dependent non-severe AA (NSAA) , were recruited in this retrospective AD HSCT study, the median age was 6 (0.8-18) years old. Of them, 44 patients with 10/10 matched unrelated donor (MUD) , 44 patients with mismatched unrelated donor (MMUD) and 21 patients with mismatched related donor (MMRD) . All patients did not receive ATG before HSCT and the active infection was excluded. Except 3 patients suffered from a second graft failure (2 of them rescued by second HSCT) , 106/109 (97.2%) were engrafted with neutrophil and platelet recovery occurring at a median of 13 days (range, 9-19) and 16 days (range, 10-81) post-transplant. Until day 100 post transplantation, the incidence was 74.3% (81/109) for acute GVHD (aGVHD) and 39.4% (43/109) for grade Ⅱ-Ⅳ aGVHD, 30.7% (31/101) and 9.9% (10/101) for overall chronic GVHD (cGVHD) and moderate cGVHD, respectively, and nobody developed an extend cGVHD. After median follow up of 39 (0.7-103) months for all patients, 13 of 109 patients died. The estimated 5-year overall survival (OS) of the entire cohort was 88.1% (95%CI 81.1%-91.4%) with no difference among the MUD, MMUD and MMRD cohort (93.2%, 84.1% and 85.7%, respectively, P=0.361) . Conclusion These excellent outcomes suggest that unmanipulated AD PBSC is a good HSCT source for children with SAA. It’s reasonable to consider AD HSCT as first line therapy for SAA children without matched sibling donor. Better strategies are required to prevent GVHD.

OBJECTIVEMucopolysaccharidosis(MPS) is a congenital hereditary disease. Only a few patients with this disease can be controlled by enzyme replacement therapy. Most of them are short of effective interference. To exploit the effect of treatment with allogenic hematopoietic stem cell transplantation, two children were treated with the transplantation.

METHODSThe two patients included a 23 month MPS-IH and an 18 month old MPS-VI at the time of transplantation. Busulfan of 20 mg/kg plus 200 mg of Cyclophosphamide were used as the conditioning regimen. Peripheral stem cells were collected from a 9/10 high resolution matched unrelated donor and a matched sibling carrier donor, respectively. The heart and lung were affected in the patient with MPS-IH. Medium obstructed pulmonary impairment was found by pulmonary function test at the time of transplantation. Medium mitral valve countercurrent and patent ductus arteriosis(PDA) were found by Doppla examination.

RESULTSThe number of hematopoietic stem cells was comparative between the two donors with total nucleated cells and CD34+ cells of 11 x 10(8)/kg and 17 x 10(8)/kg, and 7.6 x 10(6)/kg and 7.2x 10(6)/kg respectively. Neutrophil engrafted at day 11. The process of transplantation in the MPS-VI patient went smoothly with grade II graft versus host disease(GVHD) briefly and only 1 U RBC and 2 U platelet were transfused. For the MPS-IH patient, the process of transplantation was tough with platelet reaching to 20 x 10(9)/L till day 40 and 5 U RBC and 7 U platelet were transfused during transplantation. Grade III GVHD was resolved by steroid, mycophenolate mofetil (MMF) and CD25 antibody. Pneumonia recurred 3 times with 2 times rescued by trachea intubation and mechanical ventilation because of accompanying acute heart failure. At day 14 the lymphocytes in both patients were 100% from donors as evidenced by short tandem repeat-PCR(STR-PCR). MPS associated enzyme activity was increased to 70 nmol/h.mg and 66 nmol/h.mg at 3 month and still remained 50.9 nmol/h.mg and 44.5 nmol/h.mg at 2 years post transplantation. Till now the 2 patients have been followed up for 25 months and 28 months with good general condition. The cardiac and pulmonary functions have improved obviously in the MPS-IH patient. The cornea became clear in this patient.

CONCLUSIONAllogeneic hematopoietic stem cell transplantation is an effective measure to treat patient with MPS-IH and MPS-VI. Transplantation at earlier stage of age can decrease transplant related complications. It requires longer time follow up for observing the clinical effects for these patients.

Female ; Follow-Up Studies ; Graft vs Host Disease ; drug therapy ; etiology ; Hematopoietic Stem Cell Transplantation ; adverse effects ; methods ; Humans ; Infant ; Intraoperative Complications ; drug therapy ; etiology ; Male ; Mucopolysaccharidoses ; enzymology ; pathology ; physiopathology ; surgery ; Recovery of Function ; Transplantation, Homologous

This study investigated the intracellular localization of asparagine synthetase (ASNS) in the relation with chemoresistance in leukemia.pIRES-GFP-ASNS-Flag/Neo expression vector was transiently tansfected into SK-N-MC cells and 297T cells respectively.Immunofluorescence and Western blot analysis were performed for cellular localization of ASNS respectively.U937 cells were treated with L-asparaginase for 48 h and examined for endogenous ASNS expression on plasma membrane by immunofluorescence staining.Immunofluorescence staining showed that the transiently expressed ASNS was partly localized on transfected-SK-N-MC cell surface.Moreover,Western blotting exhibited that ASNS expressed both in cytosol and on plasma membrane of transfected-293T cells.Immunofluo-rescence staining with anti-ASNS-specific monoclonal antibody revealed that endogenous ASNS was localized on the plasma membrane of U937 cells,except for its distribution in the cytosol.In addition,ASNS exhibited a higher expression on plasma membrane after treatment with L-asparaginase as compared with the untreated cells.It was concluded that the subcellular translocation of ASNS may play an important role in L-asparaginase resistance in leukemia cells.

OBJECTIVE: To explore the long-term efficacy of allogeneic hematopoietic stem cell transplantation (alloHSCT) in patients with Mucopolysaccharidosis (MPS), which has rarely been reported in China. METHODS: A 18-month-old boy and a 23-month-old girl undergoing alloHSCT for MPS VI and MPS IH Shanghai Children's Medical Center on March 30, 2006 and September 6, 2006 were selected as the study subjects. A busulfan-based myeloablative regimen was used as the conditioning regimen. Peripheral stem cells were respectively collected from a human leucocyte antigen (HLA) matched sibling carrier donor and a HLA 9/10 matched unrelated donor. Both patients were followed up for more than 15 years. The functions of internal organs before and after the transplantation were compared, and child 1 was also compared with his untreated brother and healthy brother. RESULTS: Both children have achieved full donor chimerism after the transplantation, and their enzymatic activities have remained stable. The enzymatic activity of the child 1 was slightly lower than normal but similar to that of his carrier donor, whilst that of the child 2 was normal. Both children have attended schools with good academic performance. Compared with his untreated brother, the respiratory function and hearing of child 1 have significantly improved. However, his orthopedic and cardiac disorders have still remained and required medical intervention. For child 2, her obstructive pulmonary disease was resolved and cognitive development was well preserved after the HSCT. Her heart disease has become stabilized and even improved with time, though her corneal clouding and skeletal malformation still required surgery. CONCLUSION MPS patients can sustain long-term and stable enzymatic activities after successful alloHSCT. Compared with untreated patients, their health can be significantly improved, along with considerably prolonged survival, though the long-term efficacy of HSCT for different organs may vary to a certain extent.
Humans ; Child ; Male ; Female ; Infant ; Child, Preschool ; Graft vs Host Disease/etiology* ; China ; Hematopoietic Stem Cell Transplantation/adverse effects* ; Mucopolysaccharidoses/etiology* ; Busulfan ; Treatment Outcome

Objective To investigate the efficacy and safety of leukoreduction therapy in severe per-tussis in infants. Methods Therapeutic processes of 3 cases of severe pertussis in PICU of Shanghai Children′s Medical Center were retrospectively studied from October 2017 to May 2018. We reviewed the related literatures and summarized the time and effectiveness of leukoreduction therapy in severe pertussis. Results All 3 cases had leukocytosis,respiratory faliure,pulmonary hypertension and right heart failure. One case had multiple organ failure before undergoing exchange transfusion therapy and eventually died. Two cases that had pulmonary hypertension during the period of WBC′s rising accepted leukopheresis therapy before multiple organ failure,and eventually survived. We reviewed the foreign literatures which was almost case reports,leukoreduction therapy might improve the prognosis of severe pertussis in infants,but the time of using it had no conclusion. Conclusion This is the first report of leukoreduction therapy for the severe per-tussis in infants in China. It provides a new method for the treatment of severe pertussis in infants. It is worth looking forward to use this method combined with continuous renal replacement therapy and extracorporeal membrane oxygenation technology. In the future,multicenter clinical research should be done to explore the effectiveness and safety of leukoreduction therapy in the severe pertussis in infants.

Objective To investigate the efficacy of leflunomide combined with prednisone in the induction therapy of proliferative lupus nephritis (LN).Methods A prospective,multicenter,randomized controlled clinical trial was conducted in patients with biopsy-proved proliferative lupus nephritis recruited from 15 renal centers from 2013 to 2015.Patients were randomized to two groups.Oral leflunomide or intravenous cyclophosphamide was given to patients in each group.Both groups received a tapering course of oral prednisone therapy.All patients were followed up for 24 weeks.The blood biochemistry,urine index,clinical curative effect and adverse reaction were recorded and analyzed statistically.Results A total of 100 patients were enrolled in this clinical trial,including 48 patients in leflunomide group and 52 patients in cyclophosphamide group.After 24 weeks,the overall response rate was 79％ (95％ CI 67％-90％) in the leflunomide group and 69％ (95％ CI 56％-82％) in the cyclophosphamide group.23％ (95％CI 11％-35％) of patients in leflunomide group showed complete remission compared with 27％ (95％CI 24％-30％) in cyclophosphamide group (P=0.35).The levels of 24-hr urine protein excretion,SLEDAI and anti-dsDNA antibody titers were decreased in patients treated with leflunomide group after 24-weeks treatment.And the levels of serum albumin and complement 3 after treatment were significantly higher compared with these before treatment.There was also no significant difference in changes of 24-hr urine protein excretion,SLEDAI score,anti-dsDNA antibody titers,serum albumin and complement C3 levels after treatment between two groups.Incidence of adverse events did not differ between the leflunomide and cyclophosphamide group.Conclusions Leflunomide combined with prednisone showed same efficacy compared with cyclophosphamide as induction therapy for lupus nephritis.Leflunomide might be an useful medicine in the induction therapy of lupus nephritis.

OBJECTIVETo enrich our national database with data of rare diseases by analyzing molecular diagnosis and hematopoietic stem cell transplantation (HSCT) in children with inherited bone marrow failure syndromes (IBMFS).

METHODNext-generation sequencing (NGS)-based genetic diagnosis panel was applied for the clinical diagnosis and management of IBMFS. Retrospective analysis was performed on clinical and genetic data of 17 consecutive children who received HSCT over a long time interval (November. 2005-June 2015).

RESULTThree patients were diagnosed only by clinical manifestation before 2012. After that NGS-based genetic diagnosis panel was used to identify IBMFS-related genes in 12/14.IBMFS patients (except two Diamond-Blackfan anemia (DBA) patients). Two Fanconi anemia (FA) patients were confirmed to be new variations through family-genotype-analysis and 3 families accepted prenatal diagnosis to avoid birth of affected fetuses. Seventeen IBMFS patients (10 FA,5 DBA and 2 dyskeratosis congenital (DKC)) were treated with HSCT from matched sibling donors (n=2), matched unrelated donors (n=8) or mismatched unrelated donors (n=7). The source of stem cells for transplantation included peripheral blood (n=12) and cord blood (n=5). With regard to the conditioning regimens, FA and DKC patients received fludarabine-based reduced intensity conditioning, while DBA patients received classical busulfan-based myeloablative conditioning. Median age at the time of HSCT was 36 months (7-156 months). The number of infused mononuclear cells and CD34⁺ cells was (10.6 ± 6.7) × 10⁸ and (5.9 ± 7.0) × 10⁶ per kilogram of recipient body weight, respectively. The median number of days to neutrophil recovery was 13 days after HSCT (range: 10-19 days). Platelet recovery was faster in the PBSCT group than in the CBT group ((16.3 ± 6.0) days vs. (30.0 ± 17.1) days,t=-2.487,P=0.026). During a median follow-up of 17 months (range: 2-114 months), except one FA patient who was transplanted with HLA-matched unrelated cord blood (CB) died from pneumonia and heart failure because of engraftment failure, other 16 children are alive after the successful HSCT. The failure-free survival rate of the patients three years after HSCT was 94%.

CONCLUSIONNGS-based molecular diagnosis technology and effective HSCT have significantly facilitated the treatment of children with IBMFS in our country, and our national database about this rare disease is to be further exploited.

Anemia, Aplastic ; Anemia, Diamond-Blackfan ; therapy ; Bone Marrow Diseases ; Child ; Dyskeratosis Congenita ; therapy ; Fanconi Anemia ; therapy ; Fetal Blood ; Hematopoietic Stem Cell Transplantation ; Hemoglobinuria, Paroxysmal ; diagnosis ; genetics ; therapy ; Humans ; Retrospective Studies ; Siblings ; Survival Rate ; Transplantation Conditioning ; Unrelated Donors ; Vidarabine ; analogs & derivatives ; therapeutic use