• 제목/요약/키워드: Morphogenesis

검색결과 262건 처리시간 0.024초

육미지황탕의 인중합체 함량과 골형성 관련 유전자의 전사활성에 대한 연구 (Study on the Polyphosphate content of the Yukmijihwang-tang and its Effect on transcription activity of Genes related to Bone Morphogenesis)

  • 박병철;차윤엽;이응세
    • 동의생리병리학회지
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    • 제18권6호
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    • pp.1769-1776
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    • 2004
  • The aim of this study was to find out the effects of the Yukmijihwangtang on transcription activity of Genes related to Bone Morphogenesis. For this purpose, experiments were performed to compare the polyphosphate contents of Yukmijihwangtang and its component herbs, and to verify their Effects on transcription activity of Genes related to Bone Morphogenesis. We know that Yukmijihwangtang and its component herbs have adequate amount of polyphosphate contents and have effects on transcription activity of Genes such as BMP1A, BMP2B, OTN, MGP, COL. In the conclusion, Yukmijihwangtang and its component herbs are strongly believed to have effectiveness on bone morphogenesis.

Requirement of Bni5 Phosphorylation for Bud Morphogenesis in Saccharomyces cerevisiae

  • Nam, Sung-Chang;Sung, Hye-Ran;Chung, Yeon-Bok;Lee, Chong-Kil;Lee, Dong-Hun;Song, Suk-Gil
    • Journal of Microbiology
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    • 제45권1호
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    • pp.34-40
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    • 2007
  • In budding yeast, G2/M transition is tightly correlated with bud morphogenesis regulated by Swel and septin that plays as a scaffold to recruits protein components. BNI5 isolated as a suppressor for septin defect is implicated in septin organization and cytokinesis. The mechanism by which Bni5 regulates normal septin function is not completely understood. Here, we show that Bni5 phosphorylation is required for mitotic entry regulated by Swel pathway. Bni5 modification was evident from late mitosis to G1 phase, and CIP treatment in vitro of affinity-purified Bni5 removed the modification, indicative of phosphorylation on Bni5. The phosphorylation-deficient mutant of BNI5 (bni5-4A) was defective in both growth at semi-restrictive temperature and suppression of septin defect. Loss of Bni5 phosphorylation resulted in abnormal bud morphology and cell cycle delay at G2 phase, as evidenced by the formation of elongated cells with multinuclei. However, deletion of Swel completely eliminated the elongated-bud phenotypes of both bni5 deletion and bni5-4A mutants. These results suggest that the bud morphogenesis and mitotic entry are positively regulated by phosphorylation-dependent function of Bni5 which is under the control of Swel morphogenesis pathway.

건축구조 디자인 요소로서 다면체의 형태구성에 관한 연구 (A Study on the Morphogenesis of Polyhedra as Design Sources of Architectural Structures)

  • 최선영;박선우;박찬수;최취경
    • 한국공간구조학회논문집
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    • 제6권2호
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    • pp.107-114
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    • 2006
  • 본 연구의 목적은 건축물의 구조와 형상에 대한 접근방식을 다변화하는 매개로서 다면체를 탐구하고, 건축구조 디자인 요소로서 그 형태구성을 고찰하는 것이다. 따라서 자연계와 건축물에서 드러나는 다면체 형태를 살펴보고, 순수 래티스 다면체로 고찰 대상을 한정하여 그 형태학적 특성을 파악한다. 이를 토대로 건축구조 디자인 요소로서 다면체를 공간적 형태구성에 활용하는 방식을 제시한다.

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현대 건축 디자인에서의 생물학적 형태의 적용에 관한 연구 (A Study on the Application of Biomorphism on Contemporary Architectural Design)

  • 김원갑
    • 한국실내디자인학회논문집
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    • 제15권1호
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    • pp.30-38
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    • 2006
  • The new aspect of contemporary architectural design is the computer simulation of morphogenesis and evolution of the organic body. Morphogenesis and evolution is the kind of emergence that is the process of complex pattern formation from simpler rules in complex system. The development comprises the sequence of pattern formation, differentiation, morphogenesis, growth. This study analyzes the application methodology of various biomorphism in contemporary architecture. The methods of generative application by computation in architecture are self-organization, differentiation, growth algorithm via MoSS. And the methods of evolution by computation are genetic algorithm, multi-parameter in environments, phylogenetic cross-over, competing as natural selection, mutation+external constraints, generative algorithm+genetic algorithm via Genr8.

Proper Activity of Histone H3 Lysine 4 (H3K4) Methyltransferase Is Required for Morphogenesis during Zebrafish Cardiogenesis

  • Kim, Jun-Dae;Kim, Eunmi;Koun, Soonil;Ham, Hyung-Jin;Rhee, Myungchull;Kim, Myoung-Jin;Huh, Tae-Lin
    • Molecules and Cells
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    • 제38권6호
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    • pp.580-586
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    • 2015
  • While increasing evidence indicates the important function of histone methylation during development, how this process influences cardiac development in vertebrates has not been explored. Here, we elucidate the functions of two histone H3 lysine 4 (H3K4) methylation enzymes, SMYD3 and SETD7, during zebrafish heart morphogenesis using gene expression profiling by whole mount in situ hybridization and antisense morpholino oligonucleotide (MO)-based gene knockdown. We find both smyd3 and setd7 are highly expressed within developing zebrafish heart and knock-down of these genes led to severe defects in cardiac morphogenesis without altering the expressions pattern of heart markers, including cmlc2, vmhc, and amhc. Furthermore, double knock-down by coinjection of smyd3 and setd7 MOs caused the synergistic defects in heart development. As similar to knock-down effect, overexpression of these genes also caused the heart morphogenesis defect in zebrafish. These results indicate that histone modifying enzymes, SMYD3 and SETD7, appear to function synergistically during heart development and their proper functioning is essential for normal heart morphogenesis during development.

발아 서목태가 골육종세포 중 HOS-TE85의 골형성에 미치는 영향 (Study on the Effects of Germinated Rhynchosia Volubilis on Osteosarcoma HOS-TE85 Related to Bone Morphogenesis)

  • 김진연;차윤엽;이응세
    • 동의생리병리학회지
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    • 제18권6호
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    • pp.1635-1642
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    • 2004
  • The aim of this study was to find out the effectiveness on germinated Rhynchosia Volubilis for Female Bone Morphogenesis. For this purpose, experiments using germinated Rhynchosia Volubilis(GRV) according to germinating days were conducted to measure the polyphosphate contents and to examine the effects of the transcription activity of gene related to bone morphogenesis on the formation of bone in female. The quantitative analysis of the polyphosphate contents showed that 1 day geminated Rhynchosia Volubilis(GRV) group is treble better contents of polyphosphate than non-germinated Rhynchosia Volubilis, 2 day and 3 day GRV groups. The active of the COL1, OTN, MGP, BMP genes was less than the increase of the polyphosphate contents.

해산 섬모충 Pelagostrobilidium simile (Ciliophora: Oligotrichia)의 형태 형성 (Morphogenesis of Marine Ciliate Pelagostrobilidium (Ciliophora: Oligotrichia))

  • 마홍웨이;최중기
    • Animal Systematics, Evolution and Diversity
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    • 제21권1호
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    • pp.21-30
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    • 2005
  • 인천연안에서 채집한 부유성 빈모류인 Pelagostrobilidium simile의 형태 형성과정을 pyridine silver carbonate impregnation 염색법을 이용하여 관찰하였다. p. simile의 형태형성은 전형적인 hypoapokinetal mode로 입섬모열은 모세포의 체섬모와 관계없이 독립적으로 세포막 안에서 외부로 노출되는 입원기로부터 형성되었다. 입원기는 anarchic field의 증식으로 외부 입섬모열 아래에서 시작되었다. 딸세포 prefer와 opisthe의 체섬모상은 분열하는 동안 기저체의 증식으로 모세포 체섬모 구조로부터 나왔다. 모세포의 입 기구는 딸세포 prefer로 전달되고 모세포의 입섬모구조에서 입기구의 새로운 형성은 관찰되지 않았다.

사람태아 간조직의 형태형성에 관한 연구 (A Study on the Morphogenesis of Human Fetal Hepatic Tissue)

  • 등영건;김동희
    • Applied Microscopy
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    • 제28권3호
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    • pp.283-297
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    • 1998
  • Hemopoiesis and morphogenesis of the human fetal liver through from 10 to 32 weeks of gestation were investigated by light and electron microscopy. The results obtained were as follows. Hemopoiesis of fetal liver tissue was found from 10 to 32 weeks of gestation, but the hemopoiesis was decreased at 32 weeks of gestation. At the 32 weeks of gestation, matured erythrocytes were observed in the sinusoid, and formation of liver cell cord and portal triad were established. Differentiation of hepatic cell was characterized by the increase of amount of cell organelles within cytoplasm, decrease of hemopoietic cell, morphological change of nuclear envelope from folding form to round form during the developmental period. These results suggest that human fetal liver plays a hematopoietic function until bone marrow and spleen play their function, but morphology of liver at 32 weeks of gestation was differed with structure observed in liver of adult.

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Cell cycle-related kinase is a crucial regulator for ciliogenesis and Hedgehog signaling in embryonic mouse lung development

  • Lee, Hankyu;Ko, Hyuk Wan
    • BMB Reports
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    • 제53권7호
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    • pp.367-372
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    • 2020
  • Cell cycle-related kinase (CCRK) has a conserved role in ciliogenesis, and Ccrk defects in mice lead to developmental defects, including exencephaly, preaxial polydactyly, skeletal abnormalities, retinal degeneration, and polycystic kidney. Here, we found that Ccrk is highly expressed in mouse trachea and bronchioles. Ccrk mutants exhibited pulmonary hypoplasia and abnormal branching morphogenesis in respiratory organ development. Furthermore, we demonstrated that Ccrk mutant lungs exhibit not only impaired branching morphogenesis but also a significant sacculation deficiency in alveoli associated with reduced epithelial progenitor cell proliferation. In pseudoglandular stages, Ccrk mutant lungs showed a downregulation of Hedgehog (Hh) signaling and defects in cilia morphology and frequency during progenitor-cell proliferation. Interestingly, we observed that activation of the Hh signaling pathway by small-molecule smoothened agonist (SAG) partially rescued bud morphology during branch bifurcation in explants from Ccrk mutant lungs. Therefore, CCRK properly regulates respiratory airway architecture in part through Hh-signal transduction and ciliogenesis.