• Title/Summary/Keyword: cell motility

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Effecs of Soyangin Indongdeungjikolpitang on the Complication of Diabetes (소양인(小陽人) 인동등지골피탕(忍冬藤地骨皮湯)이 중소합병증(中消合倂症)에 미치는 영향(影響))

  • Seo, Yong-bae;Song, Jeong-mo
    • Journal of Sasang Constitutional Medicine
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    • v.12 no.1
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    • pp.186-200
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    • 2000
  • The purpose of this research was to investigate the effects of Indongdeungjikolpitang water extract(IJTE) on the complication of diabetes. IJTE did not affect the level of blood glucose in alloxan- or streptozotocin-induced hyperglycemic mice, but inhibited the motility of gastrointestine. IJTE inhibited the writhing syndrome induced by acetic acid, the permeability of evans blue into peritoneal cavity induced by acetic acid, the paw edema induced by histamine, and the formation of cotton pellet granuloma. IJTE increased the cell viability of thymocytes and splenocytes. IJTE decreased the release of ${\gamma}-interferone$(${\gamma}-IFN$) and interleukin-2(IL-2), but did not affect the release of interleukin-4(IL-4) from murine thymocytes. IJTE increased the release of IL-4 and decreased the release of tumor necrosis $factor-{\alpha}$($TNF-{\alpha}$) and $interleukin-1{\beta}$($IL-1{\beta}$), but did not affect of ${\gamma}-IFN$ and IL-2 from murine splenocytes. IJTE decreased the release of $TNF-{\alpha}$ and $IL-1{\beta}$ from murine peritoneal macrophages. IJTE decreased the production of niric oxide(NO) from murine peritioneal macrophages and increased the phagocytic activity of murine peritoneal macrophages. These results suggest that IJTE has an anti-inflammatory action via the inhibition of $TNF-{\alpha}$, $IL-1{\beta}$ and NO production from immune cells.

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Detection of PIK3CA Gene Mutations with HRM Analysis and Association with IGFBP-5 Expression Levels in Breast Cancer

  • Dirican, Ebubekir;Kaya, Zehra;Gullu, Gokce;Peker, Irem;Ozmen, Tolga;Gulluoglu, Bahadir M.;Kaya, Handan;Ozer, Ayse;Akkiprik, Mustafa
    • Asian Pacific Journal of Cancer Prevention
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    • v.15 no.21
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    • pp.9327-9333
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    • 2014
  • Breast cancer is the second most common cancer and second leading cause of cancer deaths in women. Phosphatidylinositol-3-kinase (PI3K)/AKT pathway mutations are associated with cancer and phosphatidylinositol-4, 5-bisphosphate 3-kinase catalytic subunit alpha (PIK3CA) gene mutations have been observed in 25-45% of breast cancer samples. Insulin growth factor binding protein-5 (IGFBP-5) can show different effects on apoptosis, cell motility and survival in breast cancer. We here aimed to determine the association between PIK3CA gene mutations and IGFBP-5 expressions for the first time in breast cancer patients. Frozen tumor samples from 101 Turkish breast cancer patients were analyzed with high resolution melting (HRM) for PIK3CA mutations (exon 9 and exon 20) and 37 HRM positive tumor samples were analyzed by DNA sequencing, mutations being found in 31. PIK3CA exon 9 mutations (Q546R, E542Q, E545K, E542K and E545D) were found in 10 tumor samples, exon 20 mutations (H1047L, H1047R, T1025T and G1049R) in 21, where only 1 tumor sample had two exon 20 mutations (T1025T and H1047R). Moreover, we detected one sample with both exon 9 (E542Q) and exon 20 (H1047R) mutations. 35% of the tumor samples with high IGFBP-5 mRNA expression and 29.4% of the tumor samples with low IGFBP-5 mRNA expression had PIK3CA mutations (p=0.9924). This is the first study of PIK3CA mutation screening results in Turkish breast cancer population using HRM analysis. This approach appears to be a very effective and reliable screening method for the PIK3CA exon 9 and 20 mutation detection. Further analysis with a greater number of samples is needed to clarify association between PIK3CA gene mutations and IGFBP-5 mRNA expression, and also clinical outcome in breast cancer patients.

Interaction of CLIP-170, a Regulator of Microtubule Plus End Dynamics, with Kinesin 1 via KIF5s (미세소관의 plus end dynamics를 조절하는 CLIP-170과 kinesin 1의 KIF5s를 통한 결합)

  • Jang, Won Hee;Jeong, Young Joo;Lee, Won Hee;Kim, Mooseong;Kim, Sang-Jin;Urm, Sang-Hwa;Seog, Dae-Hyun
    • Journal of Life Science
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    • v.27 no.6
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    • pp.673-679
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    • 2017
  • Microtubules are long rods in the cytoplasm of cells that plays a role in cell motility and intracellular transport. Microtubule-based transport by motor proteins is essential in intracellular transport. Kinesin 1 is a molecular motor protein that mediates the intracellular transport of various membranous vesicles, mRNAs, and proteins along microtubules. It is comprised of two heavy chains (KHCs, also called KIF5s) and two light chains (KLCs). KIF5s bear a motor domain in their amino (N)-terminal regions and interact with various cargoes through the cargo-binding domain in their carboxyl (C)-terminal regions. To identify proteins interacting with KIF5B, yeast two-hybrid screening was performed, and a specific interaction with the cytoplasmic linker protein 170 (CLIP-170), a plus end microtubule-binding protein, was found. The coiled-coil domain of CLIP-170 is essential for interactions with KIF5B in the yeast two-hybrid assay. CLIP-170 bound to the cargo-binding domain of KIF5B. Also, other KIF5s, KIF5A and KIF5C, interacted with CLIP-170 in the yeast two-hybrid assay. In addition, glutathione S-transferase (GST) pull-downs showed that KIF5s specifically interacted with CLIP-170. An antibody to KIF5B specifically co-immunoprecipitated CLIP-170 associated with KIF5B from mouse brain extracts. These results suggest that kinesin 1 motor protein may transport CLIP-170 in cells.

Clinical and molecular biological aspect of the hyaluronidases: basis and clinical overview for oriental medical application

  • Kim, Cheorl-Ho;Lee, Dong-Gyu;Jang, Jun-Hyouk;Kim, Jong-De;Nam, Kyung-Soo;Kim, Jeong-Joong;Park, Jong-Kun;Choo, Young-Kug;Kim, Hyung-Min;Lee, Young-Choon
    • Advances in Traditional Medicine
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    • v.1 no.1
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    • pp.8-27
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    • 2000
  • Components of extracellular matrix and the matrix-degrading enzymes are some of the key regulators of tumor metastasis and angiogenesis. Hyaluronic acid (HA), a matrix glycosaminoglycan, is known to promote tumor adhesion and migration, and its small fragments are angiogenic. Until now, we have compared levels of hyaluronidase, an enzyme that degrade HA, in normal adult prostate, benign prostate hyperplasia and prostate cancer tissues and in conditioned media from epithelial explant cultures, using a substrate (HA)-gel assay and ELISA-like assay (Kim et al., unpublished results). The present review described an overall characterization of hyaluronidases and its application to human diseases. The hyaluronidases are a family of enzymes that have, until recently, deed thorough explication. The substrate for these enzymes, hyaluronan, is becoming increasingly important, recognized now as a major participant in basic processes such as cell motility, wound healing, embryogenesis, and implicated in cancer progression. And in those lower life forms that torment human beings, hyaluronidase is associated with mechanisms of entry and spread, e.g. as a virulence factor for bacteria, for tissue dissection in gas gangrene, as a means of treponema spread in syphilis, and for penetration of skin and gut by nematode parasites. Hyaluronidase also comprises a component of the venom of a wide variety of organisms, including bees, wasps, hornets, spiders, scorpions, sh, snakes and lizards. Of particular interest is the homology between some of these venom hyaluronidases and the enzyme found in the plasma membrane of mammalian spermatozoa, attesting to the ancient nature of the conserved sequence, a 36% identity in a 300 amino acid stretch of the enzyme protein. Clearly, hyaluronidase is of biological interest, being involved in the pathophysiology of so many important' human disorders. Greater effort should be made in studying this family of enzymes that have, until recently, been overlooked. Also, oriental medical application of the hyaluronidase will be discussed with respect to inhibition and suppression of inflammation and malignacy.

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Glutamine Deprivation Inhibits Invasion of Human Prostate Carcinoma LnCap Cells through Inactivation of Matrix Metalloproteinases and Modulation of Tight Junctions (글루타민 결핍에 따른 Tight Junction 및 MMPs 활성 조절을 통한 전립선 암세포의 침윤 억제 현상)

  • Shin, Dong Yeok;Choi, Yung Hyun
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.42 no.8
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    • pp.1167-1174
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    • 2013
  • Cancer cells exhibit increased demand for glutamine-derived carbons to support anabolic processes. Indeed, the spectrum of glutamine-dependent tumors and the mechanisms through which glutamine supports cancer metabolism remain areas of active investigation. In the present study, we investigated the effects of glutamine deprivation on the correlation between tightening of tight junctions (TJs) and anti-invasive activity in human prostate carcinoma LnCap cells. Glutamine deprivation markedly inhibited cell motility and invasiveness in a time-dependent manner. The anti-invasive activity of glutamine deprivation was associated with an increased tightness of the TJ, which was demonstrated by an increase in transepithelial electrical resistance (TER). The activities of matrix metalloproteinase (MMP)-2 and MMP-9 were inhibited in a time-dependent fashion by glutamine deprivation, which was correlated with a decrease in expression of their mRNA and proteins and up-regulation of tissue inhibitors of metalloproteinases (TIMPs) expression. Furthermore, glutamine deprivation repressed the levels of the claudin family members, which are major components of TJs that play a key role in the control and selectivity of paracellular transport. Moreover, the levels of E-cadherin, a type I transmembrane glycoprotein, and snail, an epithelial to mesenchymal transition regulator and zinc finger transcription factor, were markedly modulated by glutamine deprivation. Taken together, these findings suggest that TJs and MMPs are critical targets of glutamine deprivation-induced anti-invasion in human prostate carcinoma LnCap cells.

Isolation, Identification and Growth Characteristics of Main Strain Related to Meju Fermentation (메주발효에 관여하는 우량균주의 분리, 동정 및 생육특성)

  • 최경근;최승필;함승시;이득식
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.32 no.6
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    • pp.818-824
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    • 2003
  • This study was carried out to select Meju of a good quality through general composition analysis, organoleptic evaluation, and to conduct isolation, identification, and growth characteristics of main strain related to fermentation from selected Meju. Moisture and crude protein of Meju were 7.2∼28.8% and 32.7∼42.3%, respectively. The amino nitrogen contents of Kyongbuk and Chonbuk Mejus were 770.8 mg% and 239.9 mg%, respectively. And also, free amino acid and glutamic acid contents of Doenjangs made from Chonbuk and Kyongbuk Mejus were 4,169.6 mg% and 499.4 mg%, respectively. The result of sensory evaluation of Mejus collected from several regions showed Kyongbuk was the most suitable Meju in items of color, flavor, appearance and overall (p<0.05). The typical properties of B. lichenifomis NH20 strain isolated from Kyongbuk Meju showed gram positive, aerobic rod cell and motility. As major component among its cellular fatty acid composition, $C_{15:0}$ anteiso fatty acid, $C_{15:1}$ iso fatty acid, $C_{17:0}$ anteiso fatty acid, and $C_{17:0}$ iso fatty acid were 30.7, 28.9, 13.3 and 11.2%, respectively. It showed the same identification coefficient (0.653) compared to the standard strain. Therefore, it was identified to be B. licheniformis NH20 according to Bergey's Manual of Systematic Bacteriology and its fatty acid profiles. The optimum pH, temperature, salt content, and culture time of B. licheniformis NH20 were 7.0, 32$^{\circ}C$, 2%, and 9 hours, respectively.ctively.

Effects of Moxi-tar Herbal Acupuncture of LI11 on inflammatory bowel disease induced by TNBS in mice (TNBS로 유도된 대장염에서 곡지의 구진약침 효과)

  • Song, Moon-Young;Park, Sang-Yeon;Kim, Jae-Hyo;Ahn, Sung-Hun;Kim, Kyoung-Sik;Sohn, In-Chul
    • Korean Journal of Acupuncture
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    • v.25 no.3
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    • pp.147-166
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    • 2008
  • Objectives : Crohn's disease (CD) is characterized by a chronic relapsing inflammation of the bowel in which proinflammatory cytokines play an important perpetuating role. Methods : Mice (preventive animal model of gliotoxin) were treated with 5 % 2,4,6-trinitrobenzenesulfonic acid (TNBS) at day 1 and day 7. To investigate preventive effects of acupuncture with Gujin at $LI_{11}$, acupuncture was carried out at day -1, day 1, day 3. And, to investigate therapeutic effects, acupuncture with Gujin was carried out at day 3, day 5, day 7. For the data analysis, we checked weight and width of colon, diarrhea, edema, survival rate, changes of body weight, and myeloperoxygenase (MPO) activity. For analysing protein expression, we carried out immunohistochemical staining and Western blot and we analyzed mRNA expression by RT-PCR. Results : Colon of TNBS treated mice was erosive and shortening compared with the colon of control mice and induced damages of colon epithelial cell layer and induced infiltration of immune cells in all layer of colon. Acupuncture of gujin at $LI_{11}$ in preventive mode suppressed macorscopic damages such as erosive and shortening of colon by TNBS and damages of intestinal epithelial cells and infiltration of immune cells in the colon. The average weight of 5 cm distal colon was increased in TNBS treated mice (758${\mu}g$) compared with in control mice (112${\mu}g$) and width of distal colon was also increased in TNBS treated mice (4.9mm) compared with in control mice (1.3mm). Acupuncture with Gujin at $LI_{11}$ in preventive and therapeutic mode suppressed increase of colon weight and width by TNBS. TNBS induced edema of colon and diarrhea and Acupunctured with Gujin at $LI_{11}$ in preventive and therapeutic mode ameliorated these symptom by TNBS. In preventive and therapeutic mode, the effects of acupuncture with Gujin at $LI_{11}$ were increasing the motility, suppressing body weight decreasing, suppressing MPO activity, reducing expressing of TNF-${\alpha}$, IL-1b, and ICAM-1 in colon compared with that by TNBS Conclusions : This study demonstrates that acupuncture with Gujin at $LI_{11}$ represents a potential therapeutic method of Crohn's disease.

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5-Hydroxytryptamine Generates Tonic Inward Currents on Pacemaker Activity of Interstitial Cells of Cajal from Mouse Small Intestine

  • Shahi, Pawan Kumar;Choi, Seok;Zuo, Dong Chuan;Yeum, Cheol-Ho;Yoon, Pyung-Jin;Lee, Jun;Kim, Young-Dae;Park, Chan-Guk;Kim, Man-Yoo;Shin, Hye-Rang;Oh, Hyun-Jung;Jun, Jae-Yeoul
    • The Korean Journal of Physiology and Pharmacology
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    • v.15 no.3
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    • pp.129-135
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    • 2011
  • In this study we determined whether or not 5-hydroxytryptamine (5-HT) has an effect on the pacemaker activities of interstitial cells of Cajal (ICC) from the mouse small intestine. The actions of 5-HT on pacemaker activities were investigated using a whole-cell patch-clamp technique, intracellular $Ca^{2+}$ ($[Ca^{2+}]_i$) analysis, and RT-PCR in ICC. Exogenously-treated 5-HT showed tonic inward currents on pacemaker currents in ICC under the voltage-clamp mode in a dose-dependent manner. Based on RT-PCR results, we found the existence of 5-$HT_{2B,\;3,\;4,\;and\;7}$ receptors in ICC. However, SDZ 205557 (a 5-$HT_4$ receptor antagonist), SB 269970 (a 5-$HT_7$ receptor antagonist), 3-tropanylindole - 3 - carboxylate methiodide (3-TCM; a 5-$HT_3$ antagonist) blocked the 5-HT-induced action on pacemaker activity, but not SB 204741 (a 5-$HT_{2B}$ receptor antagonist). Based on $[Ca^{2+}]_i$ analysis, we found that 5-HT increased the intensity of $[Ca^{2+}]_i$. The treatment of PD 98059 or JNK II inhibitor blocked the 5-HT-induced action on pacemaker activity of ICC, but not SB 203580. In summary, these results suggest that 5-HT can modulate pacemaker activity through 5-$HT_{3,\;4,\;and\;7}$ receptors via $[Ca^{2+}]_i$ mobilization and regulation of mitogen-activated protein kinases.

Cordycepin Inhibits Migration and Invasion of HCT116 Human Colorectal Carcinoma Cells by Tightening of Tight Junctions and Inhibition of Matrix Metalloproteinase Activity (Cordycepin의 치밀결합 강화 및 MMPs의 활성 억제를 통한 HCT116 인체대장암세포의 이동성 및 침윤성의 억제)

  • Jeong, Jin Woo;Choi, Yung Hyun
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.43 no.1
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    • pp.86-92
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    • 2014
  • Cordycepin is the major functional component of Cordyceps species and is widely used in traditional oriental medicine. Cordycepin has been shown to possess many pharmacological properties, such as enhancement of immune function along with anti-inflammatory, antioxidant, anti-aging, and anti-cancer effects. Here, we investigated the inhibitory effects of cordycepin on cell migration and invasion, which are two critical cellular processes that are often deregulated during metastasis, using HCT116 human colorectal carcinoma cells. According to our data, cordycepin at non-cytotoxic concentrations markedly inhibited the motility and invasiveness of HCT116 cells in a time-dependent manner. RT-PCR and Western blotting results indicated that cordycepin reduced the levels of claudin proteins, which are major components of tight junctions (TJs), and induced tightening of TJs. Cordycepin also attenuated the expression and activities of matrix metalloproteinases (MMPs)-2 and -9, whereas levels of tissue inhibitor of metalloproteinases (TIMPs)-1 and -2 were simultaneously elevated. These findings suggest that cordycepin reduces the migration and invasion of HCT116 cells by modulating the activities of TJs and MMPs.

Effects of Culture Temperatures and Media on Morphological Changes of Leptospira interrogans Isolated in Korea (한국에서 분리된 Leptospira의 배양조건에 따른 형태변화)

  • Lee, Tae-Yoon;Park, Jeon-Han;Uhm, Jeong-Ran;Lee, Bong-Ki;Lee, Won-Young;Kim, Joo-Deuk;Youn, Jung-Koo;Hahn, Kyu-Woung
    • The Journal of the Korean Society for Microbiology
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    • v.22 no.3
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    • pp.209-218
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    • 1987
  • Leptospira interrogans, the causative organism of leptospirosis, is characterized by a fine helical morphology, and the helix is almost always right-handed. However, one of the striking features of recent isolates of L. interrogans in Korea was the heterogeneity in their morphology. Even under optimal culture conditions($30^{\circ}C$, EMJH medium), rods, spiral forms with right or left-handed helices, and even spherical forms of L. interrogans were present. Although the literature notes the presence of left-handed helices, long rods, and spherical forms in cultures of L. interrogans isolates, little is known about the cause of this morphologic heterogeneity. In an attempt to answer this question, this study was initiated to examine the effects of culture conditions, especially temperature and medium, on the morphology of L. interrogans. Four temperatures($5^{\circ}C$, $15^{\circ}C$, $30^{\circ}C$, and $37^{\circ}C$) and two types of media(Fletcher and EMJH) were used; one strain from Korean isolates and L. interrogans serovar canicola obtained from the Pasteur Institute(Paris, France) were employed throughout the study. The findings are as follows: 1. The L. interrogans isolated in Korea(UM-19) had a larger cell diameter($0.25{\sim}0.30\;{\mu}m$: $0.10{\sim}0.15\;{\mu}m$), and helix diameter($0.10{\sim}0.60\;{\mu}m$: $0.10{\sim}0.15\;{\mu}m$) than that obtained from the Pasteur Institute, but they varied in their distances between the helices($0.31{\sim}1.00\;{\mu}m$: $0.50{\sim}0.70\;{\mu}m$). 2, When UM-19 was grown at $37^{\circ}C$ after months or longer preincubation at $5^{\circ}C$ or $15^{\circ}C$, the majority of the organisms were spiral forms; however, they became rods when subcultured at $30^{\circ}C$ or $37^{\circ}C$. No significant morphological differences were found between Fletcher and EMJH media. 3. When L. interrogans serovar canicola was subcultured more than ten times at $37^{\circ}C$, some of the organism lost their motility as well as the hooks at either one or both ends, but only in Fletcher medium. The number of variants increased with the frequency of subculturing. These findings suggested that L. interrogans strain (UM-19) is different, in their morphology, from that of the Pasteur Institute, and its various morphologies may represent stages of the life cycle and vary with incubation temperature.

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