In recent years , the emergence and progress of cancer genomics and targeted therapies have remarkably expanded the application fields of protein-protein interaction in cancer research .Fluorescence resonance energy transfer ( FRET ) is a kind of nonradiation energy transfer technique , which can timing , quantitative , positioning , and dynamically monitor the interaction between protein and protein in living cells .With the discovery of novel fluorescent proteins and the development of FRET -based biosensors , FRET has became an important method for visualizing spatial and temporal dynamics of interactions among biological macromolecules in native environments .This review summarises the recent studies and technological advances that have enhanced the use of FRET tech -nology in cancer basic research , early diagnosis , prognosis evaluation , drug development and other areas .

The therapy of acute promyelocytic leukemia (APL) with all-trans retinoic acid and arsenic trioxide was first discovered in China, which made a great contribution worldwide to APL treatment. However, foreign guidelines did not include the Chinese chemotherapy regimens, and our regimens were inconsistent with foreign guidelines. Therefore, it is necessary to interpret the home and international guidelines and to explore standard treatment of APL by analyzing APL guidelines of the China, Europe and the United States. Owing to several discrepancies between domestic and foreign APL guidelines, unifying the APL's diagnosis and treatment standard is desperately needed at present according to the evidence-based medicine. It is hoped that Chinese chemotherapy regimens will be more acceptable to other countries of the world, and would benefit the diagnosis and treatment of human APL.

0 5).Conclusions The measurement of platelet membrane GPⅡbⅢa complexes by FCM can provide a simple, sensitive and reliable method for G T diagnosis,and also can be applied to analysis of GT family pedigree.

Objectives To establish culture system for unilineage differentiation of umbilical cord blood CD 34 + cells into granulocytes, erythrocytes or platelets. Methods After CD 34 + cells were separated by midiMACS using micro beads conjugated with anti-CD 34 monoclonal antibody, these cells were induced to specifically differentiate along granulocyte, erythrocyte or platelet by adding appropriate hematopoietic growth factors including SCF plus G-CSF, EPO or TPO. Then morphology, immunological phenotype and function analysis were performed to identify these induced cells. Results After induced unilineage differentiation, the percentages of CD 15 +, GPA + and CD 41 + cells were 81 17%, 95 35% and 77 82%, respectively. These induced cells acquired terminal cell's morphologies. The cells from the granulocytic culture had the ability to phagocytose Chinese ink and plate-like particles could aggregate under the action of thrombin. Conclusion The culture system for unilineage differentiation of CD 34 + cells into erythrocytes, granulocytes, or platelets was established, which was a basis for the research about cell treatment, gene regulation and exogenous gene expression in hemopoiesis.

Objective To observe the effect of Yinchenwulin(YCWL) powder on the c-myc rnRNA expression in vascular smooth muscle cell (VSMC) of atherosclerosis(AS) rats. Methods 70 Wistar rats were randomly divided into four groups: normal, model, Gypenosides treatment and YCWL powder treatment groups. AS models of rats were set up by feeding with high fat diet for one month. One month after treatment the level of serum lipid and blood rheology were measured, the phathological change of aorta was observed by HE staining, the ultrastructure change of aorta was observed by transmission electronic microscope, and c-myc mRNA expression in VSMC was detected by RT-PCR. Results Compared with Gypenosides treatment, YCWL powder could obviously decreased the levels of serum TC,TG and LDL, increase serum HDL level, reduce plasma viscosity,whole blood mid-cut,hematocrit and platelet adhesion rate, maintain aorta tissue structure, and down-regulate c-myc mRNA expression. Conclusion YCWL powder has therapeutic effect for atherosclerosis by regulating c-myc mRNA expression.

A total of 160 elderly patients with Ⅰ -Ⅲ essential hypertension were enrolled in the study and examined with high-frequency color Doppler ultrasonography (America ATL Company HDI3500 type color ultrasonoscope). Common carotid artery (CCA), internal carotid artery and external carotid artery (ECA) were detected, including carotid artery intima-media thickness (CAIMT) and hemodynamic index. At the same time, 110 healthy elders were taken as contrast group. With the increased degree of hypertension, CAIMT was gradually enhanced and the most obviously in patients of grade Ⅲ hypertension. There were significant differences in grade Ⅲ, Ⅱ, Ⅰ and contrast group (P

Objective To investigate the laboratory examination,diagnosis and treatment of 57 cases of Acute Promyelocytic Leukemia.Methods The clinical manifestation,laboratory morphology-immunology-cytogenetics-molecular (MICM) classification,treatment and follow-up were analyzed retrospectively among 57 newly diagnosed cases of acute pmmyelocytic leukemia (APL) patients from January 2011 to December 2013 in Xiangya Hospital,Central South University.Results In 57 patients,the first symptom was given priority to with bleeding (73.7％),fever (26.3％),and the organ infiltration accounted for 29.8％.The phenotype of CD13 + CD33 + CD34-HLD-RA-was 59.6％ in 57 patients,CD13 + CD33 +CD34 + HLD-RA + was 8.8％,and the remaining 18 cases were not classic phenotypes.The positive percentage of PML/RARa was 93.0％ by fluorescence in situ hybridization (FISH),and the remaining 4 cases were other rare abnormal.Except one case gave up the treatment,the other 56 cases of APL patients reached 100％ complete remission rate under early screening and diagnosis,relatively standardized and effective treatment.Conclusions Hemorrhage is the most common clinical symptoms of M3.MICM classification,especially the FISH technology,is the main laboratory basis for diagnosis of M3.After the treatment of early specifications currently,M3 can almost be cured.

【Objective】To observe the dynamic interference of cellular endotoxin specific receptors of Toll-like receptor 4(TLR4) mRNA and nuclear factor ?B p65(NF-?B p65) in rats with damp-heat syndrome of seasonal febrile disease by Ganlu Xiaodu Dan(GXD),and to explore the therapeutic mechanism of prescriptions with the actions of clearing heat and resolving dampness.【Methods】Wistar rats were randomized into 3 groups: A(normal control),B(models established by feeding of high-fat diet and colon bacillus under the high-temperature and high-humidity condition),and C(rat models treated with GXD).Reverse transcription-polymerase chain reaction(RT-PCR) analysis was used to detect the TLR4 mRNA level in hepatic macrophages and immunohistochemical method was used to detect the activation of NF-?B p65.【Results】The expression of TLR4 mRNA and NF-?B p65 was increased gradually in group B 6,12 and 24 hours after infection with colon bacillus,and the differences were significant,indicating that the expression of TLR4 mRNA and NF-?B p65 increased with the prolongation of disease course.In group C,TLR4 mRNA expression was decreased in different time points after infection,the difference of TLR4 mRNA expression 12 and 24 hours after infection was significant as compared with group B and group A(P

A low calcium medium developed for epidermal keratinocytes were prepared according to the MCDB 153 modified formula and used in human epidermal keratinocyte culture compared with DMEM culture system. The observation by contrast microscopy and electron microscopy showed that in the low calcium medium keratinocytes grew as a monolayer of high proliferation and had many characteristics of basal cells, with a more rounded shape and large intercellular spaces. Increasing the calcium ion concentration in the medium or changing the other culture conditions the cells in these cultures could be induced stratification and terminal differentiation. The results suggest that the growth, proliferation and differentiation of cultured human epidermal keratinocytes can be controlled and regulated someway.

Objective:To evaluate the effect of cryopreservation on clonogenic ability and apoptosis rate of mono-nuclear cells and CD34+cells in umbilical blood (UB), and to choose the index to present the freezing injury and optimize the cryopreservation of UB. Methods:hTe mono-nuclear cells (MNC) and CD34+cells were separated from UB and frozen.Atfer 30 days, they were thawed in warm water. Clonogenic capacity and clonogenic recovery before and atfer the cryopreservation was compared. We also used Annexin V-FITC-PI to investigate the apoptosis rate of the cells before and atfer the cryopreservation of these 2 types of cells. Results:hTe number of colony forming unit-granulocyte/monocyte (CFU-GMs) was not changed atfer freezing and thawing in both MNCs and CD34+cells, while the number of colony forming unit-granulocyte, erythrocyte, monocyte and megakaryocyte (CFU-GEMM) was obviously reduced after freezing in CD34+cells. The 2 types of cryopreserved cells had certain degree of apoptosis before the cryopreservation. MNC-type cryopreservation increased the cells apoptosis a little, while CD34+-type cryopreservation increased more. Conclusion:hTe cells have certain degree of apoptosis before the cryopreservation. hTe freezing and thawing procedure does affect the early stage progenitor cells-CFU-GEMM in the CD34+-type cryopreserved cells in UB. hTe damage may be induced by the cell apoptosis.