• Title/Summary/Keyword: antibody engineering

Search Result 355, Processing Time 0.031 seconds

Study on Change of Poly ADP Ribose Polymerase in the Rat with Thrombotic Stroke by Full Wave Cockroft Walton method's Transcranial Magnetic Stimulation

  • Kim, Whi-Young;Kim, Jun-Hyoung
    • Journal of Magnetics
    • /
    • v.19 no.1
    • /
    • pp.20-27
    • /
    • 2014
  • This study examined the relationships between protein expression and Poly ADP ribose polymerase in brain cell death in brains damaged by thrombotic stroke and treated with the Full Wave- Cockroft Walton (FWCW) method of Transcranial Magnetic Stimulation (TMS). The two-way switching element for TMS drove a half-bridge inverter of the current resonance of direct current voltage (+) and direct current voltage (-), and the experiment was conducted by stimulating the mice with thrombotic stroke through a range of pulses. Thrombotic stroke was caused of ligation of the common carotid artery of male SD mice, and blood reperfusion was conducted five minutes later. Protein expression was examined in immune reaction cells, which reacted to an antibody to Poly ADP ribose polymerase in the cerebrum cells, and western blotting. Observations of the PARP changes after thrombotic stroke showed that the number of Poly ADP ribose polymerase reactions were significantly lower (p < 0.05) in the group treated with TMS of the FWCW than the group with thrombotic stroke 24 hours after its onset. The application of FWCW-TMS helped prevent the necrosis of nerve cells and might prevent the brain damage that occurs as a result of thrombotic stroke, and improve the function recovery and disorder of brain cells.

A Study on the Antigen Characteristics of Rhodotorula rubra (Rhodotorula rubra의 항원특성에 관한 연구)

  • Kwon, Hyuk-Ku;Lee, Jang-Hoon;Ryeon, Kon
    • Journal of Environmental Health Sciences
    • /
    • v.28 no.5
    • /
    • pp.28-34
    • /
    • 2002
  • Antigenicity of Rhodotrula rubra isolated from pulmonary tissue of pulmonary tuberculosis patients was studied by means of agglutination reaction with R. rubra whole cell antiserum. And the serological reactivity of crude polyfac charide from R. frubra, Candida albicans, Candida tropicalis, Candida, glabrata, and Saccharomyces cerevisiae ATCC 26603 with antiserum to R. rubra whole cell was studied by means of immunodiffusion test. R. rubra showed stationary phase after 48h when it was cultured in GYEP broth. While agglutinogen titer was 1:64 at lag phase, agglutinogen titer was 1 :256 after 20h. After growth of R. rubra on different 11 media, nutritional environment showed similar agglu-tination reartivity. The agglutinogen titer of C. albicans, C. tropicalis, C. giabrata, which were isolated from patient's expectoration, to R. rubra antiserum by means of agglutination reaction were 1:16, respectively. But, Sacch. cervisiae ATCC26603 was negative. Those results were lower than that of R. rubra agglutinogen titer 1:256. As a result of immu-nodiffusion test with crude polysaccharide extracted from cell wall of R. rubra, C. albicans, C. tropicalis, C. glabrata, Sacch. cervisiae ATCC26603, precipitin line was found only with R. rubra, of which antibody titer was 8.

Production of Monoclonal Antibody about Specific Key Enzyme of Hyoscyamine $6{\beta}-Hydroxylase$ (H6H) in Scopolia parviflora

  • Kang, Young-Min;Jung, Hee-Young;Kang, Seung-Mi;Jin, Byung-Rae;Lee, Sang-Chul;Lee, Byung-Hyun;Choi, Myung-Suk
    • Korean Journal of Medicinal Crop Science
    • /
    • v.12 no.2
    • /
    • pp.135-140
    • /
    • 2004
  • Total RNAs were isolated from cultured roots of Scopolia parviflora, $poly(A)^+$ RNA was obtained through the mRNA purification, cDNA library of Hnh6h was constructed. Recombinant baculoviruses in Spodoptera frugiperda (Sf) cells were constructed by use of the transfer vector pBacPAK, which has the AcNPV sequence under the polyhedrin promoter. The expression vector carrying Hnh6h gene was transferred to S. parviflora and obtained transgenic hairy root lines. Our results confirmed the over expression of the H6H protein was used by anti-pBacPAK about cDNAs of S. parviflora. This study will served for production of tropane alkaloids by metabolic engineering.

Evidence for the Ras-Independent Signaling Pathway Regulating Insulin-Induced DNA Synthesis

  • Jhun, Byung-H.
    • BMB Reports
    • /
    • v.32 no.2
    • /
    • pp.196-202
    • /
    • 1999
  • The existence of the Ras-independent signal transduction pathway of insulin leading to DNA synthesis was investigated in Rat-1 fibroblasts overexpressing human insulin receptor (HIRc-B) using the single-cell microinjection technique. Microinjection of a dominant-negative mutant $Ras^{N17}$ protein into quiescent HIRc-B cells inhibited the DNA synthesis stimulated by insulin. Microinjection of oncogenic H-$Ras^{V12}$ protein ($H-Ras^{V12}$) (0.1 mg/ml) induced DNA synthesis by 35%, whereas that of control-injected IgG was induced by 20%. When the marginal amount of oncogenic H-$Ras^{V12}$ protein was coinjected with a dominant-negative mutant of the H-Ras protein ($Ras^{N17}$), DNA synthesis was 35% and 74% in the absence and presence of insulin, respectively. This full recovery of DNA synthesis by insulin suggests the existence of the Ras-independent pathway. The same recovery was observed in the cells coinjected with either H-$Ras^{V12}$ plus H-$Ras^{N17}$ plus SH2 domain of the p85 subunit of PI3-kinase ($p85^{SH2-N}$) or H-$Ras^{V12}$ plus H-$Ras^{N17}$ plus interfering anti-Shc antibody. When co-injected with a dominant-negative H-$Ras^{N17}$, the DNA synthesis induced by the Ras-independent pathway was blocked. These results indicate that the Ras-independent pathway of insulin leading to DNA synthesis exists, bypassing the p85 of PI3-kinase and Shc protein, and requires Rac1 protein.

  • PDF

Rapid Detection Kit for Salmonella typhimurium (살모넬라 식중독균 신속 검출용 간이 진단키트)

  • Kim, Gi-Young;Yang, Gil-Mo;Park, Saet-Byeol;Kim, Yung-Hwun;Lee, Kang-Jin;Son, Jae-Yong;Kim, Hyuck-Joo;Lee, Sae-Rom
    • Journal of Biosystems Engineering
    • /
    • v.36 no.2
    • /
    • pp.140-146
    • /
    • 2011
  • This study was performed to develop a rapid test kit for pathogenic Salmonella in various samples. The rapid detection kit has been fabricated based on nitrocellulose lateral-flow strip. Colloidal gold and biotin conjugated Salmonella antibodies were used as a tag and a receptor, respectively. Manually spotted Salmonella antibody and Neutravidin on nitrocellulose membrane were used as test and control lines, respectively. Feasibility of the rapid kit to detect Salmonella typhimurium in samples were evaluated. The intensity of the color of the test line started to increase with the samples in which higher concentration of the cells were contained. The sensitivity of the sensor was $10^6$ cfu/mL Salmonella spiked in PBS. Also, the rapid test kit could detect $10^6$ cfu/mL of Salmonella in chicken meat extract.

A Design of An Active PID control using Immune Algorithm for Vibration Control of Building Structure (구조물 진동제어를 위한 Immune Algorithm을 이용한 Active PID 제어기 설계)

  • Lee, Young-Jin;Cho, Hyun-Cheol;Lee, Kwon-Soon
    • Proceedings of the KIEE Conference
    • /
    • 2005.05a
    • /
    • pp.72-74
    • /
    • 2005
  • In this paper, we propose an adaptive PID controller using a cell-mediated immune response to improve a PID control performance. The proposed controller is based on the specific immune response of the biological immune system that is cell-mediated immunity. The immune system of organisms in the real body regulates the antibody and the T-cells to protect an attack from the foreign materials like virus, germ cells, and other antigens. It has similar characteristics that are the adaptation and robustness to overcome disturbances and to control the plant of engineering application. We first build a model of the T-cell regulated immune response mechanism and then designed an I-PID controller focusing on the T-cell regulated immune response of the biological immune system. We apply the proposed methodology to building structures to mitigate vibrations due to strong winds for evaluation of control performances. Through computer simulations, system responses are illustrated and additionally compared to traditional control approaches.

  • PDF

Identification of Demyelination using M. leprae-specific phenolic glycolipid-1 (PGL-1) (M. leprae의 특이 phenolic glycolipid-1 (PGL-1)를 이용한 탈수초화의 검정)

  • Kim, Ji-Young;Sa, Young-Hee;Hong, Seong-Karp
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • 2015.05a
    • /
    • pp.943-946
    • /
    • 2015
  • For myelination, Schwann cells and neuron cells from dorsal root ganglion (DRG) of rat embryos (E16) were cultured in vitro system. The purified DRG cells with anti-mitotic agents and purified Schwann cells were cocultured and then accomplished myelination processing. Treatment of M. leprae-specific phenolic glycolipid-1 (PGL-1) into this coculture system was performed and then accomplished demyelination. Therefore, we identified demyelination processing using antibody of myelin basic protein (MBP).

  • PDF

Isolation and Characterization of an Immunopotentiating Factor from Lactobacillus plantarum in Kimchi: Assessment of Immunostimulatory Activities

  • Lee, Jong-Hwa;Kweon, Dae-Hyuk;Lee, Seung-Cheol
    • Food Science and Biotechnology
    • /
    • v.15 no.6
    • /
    • pp.877-883
    • /
    • 2006
  • The immunostimulatory activities of Lactobacillus plantarum, the major microorganism in kimchi fermentations were investigated. Five strains of L. plantarum exhibited weak immunopotentiating activity, but L. plantarum PS-21 showed as strong a mitogenic activity as Bifidobacterium adolescentis M101-4, a known positive strain. It is of interest that, L. plantarum PS-21 stimulated proliferation of Peyer's patch cells, one of the most important tissues in the gut-associated lymphoreticular system. Cell' wall fractions from L. plantarum PS-21 also showed strong mitogenic activity compared with the soluble cytoplasmic fraction. A peptidoglycan fraction (PG) extracted from the cell wall of L. plantarum PS-21 was identified as an active mitogenic component when used in murine lymph node and spleen cell test systems. PG showed dose-dependent mitogenic activity and significantly enhanced antibody production in lymph node cells when studied in vitro. The lysosomal enzyme activity of murine peritoneal macrophages was increased when analyzed following injection of PG to the host animal. Furthermore, PG enhanced the production of cytokines such ($TNF-{\alpha}$ and IL-6) in the in vitro culture of RAW 264.7 macrophage cells.

A Survey on Prevalence of S.T.D for Prostitutes in Seoul District - About Young Dung Po and Sung Buk Areas- ('윤락여성의 성병감염에 관한 조사' -영등포 및 성북지역을 중심으로-)

  • Yu Byong Tai;Park Sang Hyun
    • Journal of environmental and Sanitary engineering
    • /
    • v.2 no.2 s.2
    • /
    • pp.49-60
    • /
    • 1987
  • The incidence of Sexually Transmitted Disease has risen despite the progress in its diagnosis and treatment methods. For the effective control programs of S.T.D it should be required medical and social approaches. This survey was conducted in Young Dung Po and Sung Buk areas from June, 1986 to September, 1986. The 1185 prostitutes were studies in order to determine the prevalences of sexually transmitted disease. The results were as follows: 1. The average age of prostitutes was $24.0\pm3.9$ years. The age group of 21-25 years old was the highest level of about $70.3\%$. 2. The positive rate on non Gonococcal urethites was $9.1\%$ at Sung Buk area and $15.3\%$ at Young Dung Po area. 3. The positive rate of Neisseria Gonorrhoeae on culture of TM media was $6.4\%$ or total level and incidence ratio of Neisseria Gonorrhoeae: Non Gonococcal urethritis was 1: 1.7. 4. The positive rate of PPNG was occupied about $26.3\%$ among the total NG positive case. 5. The positive rate of VDRL Slide Test was $2.9\%$, and antibody Titer level of 1:2 was $38.8\%$. it was the highest of all Titer distribution.

  • PDF

Myelination and Demyelination of Schwann cells and Neuron cells (슈반세포와 뉴런세포의 수초화와 탈수초화)

  • Kim, Hyun Joo;Kim, Ji-Young;Hong, Seong-Karp
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • 2015.10a
    • /
    • pp.830-833
    • /
    • 2015
  • Schwann cells and neuron cells from dorsal root ganglion (DRG) of rat embryos (E16) were isolated and purified in vitro system. The purified DRG cells with anti-mitotic agents and purified Schwann cells, respectively, were cocultured and then consummated myelination processing. This myelination system was treated by M. leprae-specific phenolic glycolipid-1 (PGL-1) and then accomplished demyelination system. We compared with myelination and demyelination using neurofilament of monoclonal antibody.

  • PDF