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This study was designed to assess E-cadherin (E-cad)and proliferating cell nuclear antigen (PCNA)expression as well as their clinicopathological significance in human non small cell lung cancers (NSCLCs). Possible molecular mechanisms of differentiation and metastasis of NSCLCs are discussed. Immuno-histochemical and immunofluorescence double staining were performed to examine the expression of E-cad...
To observe the influence of hyperthermia under different temperature on the growth, apoptosis of Human Lung Cancer cell of A549, H1299 to investigate the possible mechanism of apoptosis in lung cancer cell caused by p53 with different activity. Human lung cancer cell of A549, H1299 was heated under 40??C 42??C 44??C separately for 2 hours each in the water bath case. After the hyperthermia under different...
AIM To study the activation of CTLs against gastric cancer cells induced by FasL/B7-l (FB-ll)genes modified tumor cells, and to explore whether co-expression of FasL and B7-1 in SGC-7901 tumor cells could initiate an synergistic antitumor effect. METHODS FasL and B7-1 genes were transfected into human SGC-7901 gastric cancer cells with adenovirus vectors. The positive clones were selected by G418...
With the advance of immunology, immunogene therapy is becoming a possible therapeutic alternative to advanced cancer. The aim of tumor immunogene therapy is to enhance the immune response to tumors. Evidence suggests that CD80 (B7-1) and Interferon-gamma (IFN-gamma) play important roles in antitumor immunity induced by T lymphocyte. To study the antitumor immune effects of lung carcinoma vaccine modified...
AIM: In the present study, murine A549 Lung cancer cells were provided Lung cancer with different thermal dose invitro and invivo, thereafter we investigated the apoptosis, necrosis rates, and intratumoral microvessel density (MVD) to determine that microvessel damage plays an important role in the tumoricidal effect of Lung cancer. Methods: A549 Lung cancer cells were inoculated in the right hind...
Evaluate the possible value of FasL in gastric cancer gene therapy by investigating the effects of FasL expression on human gastric cancer cell line.An adenoviral vector encoding the full-length human FasL cDNA was constructed and used to infect a human gastric cancer (SGC-7901) cell line. FasL expression was confirmed by X-gal staining, flow cytometric analysis and RT-PCR. The effect of FasL on cell...
To study the activation of CTLs against esophageal cancer cells induced by FasL/B7-1 (FB-11)genes modified tumor cells, and to explore whether co-expression of FasL and B7-1 in Eca-109 tumor cells could initiate an synergistic antitumor effect. FasL and B7-1 genes were transfected into human Eca-109 Eca-109 cancer cells with adenovirus vectors. The positive clones were selected by G418. FasL and B7-1...
TGF-betaRI gene is a tumor-suppressing gene. The loss of its biological activity due to the mutation of this gene has been found in a variety of human tumors.To investigate whether the transforming growth factor-beta receptor type I(TGF-betaRI) gene is associated with genetic predisposition of primary non-small cell lung cancer (NSCLC). The entire coding region of TGF-betaRI and flanking intron sequences...
To investigate the apoptosis-inducing effect of Caspases-3 expressed by constructed eukaryotic vector on gastric cancer cell line SGC7901.PCR was employed to amplify the sequences of both small and large subunits of Caspases-3. Its products were separately cloned into the Sma I site of pBluescript KS+ to generate both plasmids pBS/SS and pBS/LS. The small subunit fragment was excised from plasmid...
Base on new experimental results, we give a dynamical model to study the dynamical mechanism of the negative feedback loop composed of p53 and Mdm2 proteins regulated by p14/19ARR The oscillatory behaviors for the activities of p53 and Mdm2 proteins regulated by p14/19ARF in individual of cells are described in our dynamical model. The results help us build a basal network about oscillatory behaviors...
This work investigates two important components in neural implants, the information link and the energy source. In this paper, a new concept in which neural implants operate on the biological resources readily available to them is adopted. The volume conduction property of human tissue is employed to pass information, and the electrons released during cellular metabolic process are collected to supply...
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