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関連する概念動画

Cleavage and Blastulation01:33

Cleavage and Blastulation

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After a large-single-celled zygote is produced via fertilization, the process of cleavage occurs while zygotes travel through the uterine tube. Cleavage is a mitotic cell division that does not result in growth. With each round of successive cell division, daughter cells get increasingly smaller.
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Gastrulation01:56

Gastrulation

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Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series of intricate cellular movements, which in humans transforms a flat, “bilaminar disc” composed of two cell sheets into a three-tiered structure. In the resulting embryo, the endoderm serves as the bottom layer, and stacked directly above it is the intermediate mesoderm, and then the uppermost ectoderm. Respectively, these tissue strata...
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Hedgehog Signaling Pathway02:33

Hedgehog Signaling Pathway

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The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
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Non-Canonical Wnt Signaling Pathways01:41

Non-Canonical Wnt Signaling Pathways

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Wnt is a zygotic effect gene that is expressed during very early embryonic development. It regulates various processes in animals starting from early development through the adult stage, such as organogenesis in the embryo and maintenance of neuronal and blood stem cells. Wnt proteins can induce a wide variety of intracellular pathways depending upon the specific abilities of different Wnt ligands to form a complex with shared and cognate receptors in the presence of different co-receptors. The...
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TGF - β Signaling Pathway01:16

TGF - β Signaling Pathway

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The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
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Role Of Notch Signalling In Intestinal Stem Cell Renewal01:12

Role Of Notch Signalling In Intestinal Stem Cell Renewal

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Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
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関連する実験動画

Updated: May 1, 2026

Grafting of Beads into Developing Chicken Embryo Limbs to Identify Signal Transduction Pathways Affecting Gene Expression
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歪んだ胃化は,BMPアンタゴニストとして機能する可能性があります.

C Chang1, D A Holtzman, S Chau

  • 1Laboratory of Vertebrate Molecular Embryology, The Rockefeller University, Box 32, 1230 York Avenue, New York, New York 10021, USA.

Nature
|March 22, 2001
PubMed
まとめ
この要約は機械生成です。

トゥイスド・ガストルーレーション (TSG) は,クセノプスの骨型遺伝タンパク質 (BMP) 阻害体として作用し,直接BMPに結合し,コードリンと複合体を形成します. これは,脊椎動物の発達におけるTSGの役割が保存されていることを示しています.

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Application of Impermeable Barriers Combined with Candidate Factor Soaked Beads to Study Inductive Signals in the Chick
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Analysis of Transforming Growth Factor ß Family Cleavage Products Secreted Into the Blastocoele of Xenopus laevis Embryos
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関連する実験動画

Last Updated: May 1, 2026

Grafting of Beads into Developing Chicken Embryo Limbs to Identify Signal Transduction Pathways Affecting Gene Expression
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Application of Impermeable Barriers Combined with Candidate Factor Soaked Beads to Study Inductive Signals in the Chick
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Analysis of Transforming Growth Factor ß Family Cleavage Products Secreted Into the Blastocoele of Xenopus laevis Embryos
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科学分野:

  • 発達生物学 発達生物学について
  • 分子生物学は分子生物学である.
  • 遺伝学 遺伝学とは

背景:

  • 骨形態遺伝タンパク質 (BMPs) は,脊椎動物と無脊椎動物の両方で,背中-腹軸の確立に不可欠です.
  • コーディン/ショートガストルレーション (SOG) のような分泌因子はBMPの活性に対抗するが,脊椎動物におけるTwisted Gastrulation (TSG) の役割は不明のままである.

研究 の 目的:

  • 脊椎動物のTwisted Gastrulation (TSG) の同類体を特徴付けるために.
  • 脊椎動物の発達におけるTSG機能のメカニズムの解明,特にXenopus.

主な方法:

  • BMP阻害を評価するために,Xenopusにおける胚の拡張性アッセイ.
  • 発達マーカーの影響を評価するための全身のカエル胚実験.
  • バイオケミカルアッセイは,BMPsおよびchordin.とTSG結合相互作用を決定する.

主要な成果:

  • 脊椎動物のTSG同種が特徴づけられました.
  • TSGは,Xenopusの胚性エクスペラントにおいてBMP抑制機能を実証し,全胚において腹部マーカーを抑制した.
  • TSGはBMPを直接結合し,コードリンと三元複合体を形成し,BMPの抑制を強める.

結論:

  • TSGは,XenopusにおけるBMP阻害体として機能し,背中中軸の決定に役割を果たします.
  • TSGは,カエルの胚形成の間に,まだ特徴づけられていない追加の機能を有することがあります.
  • この発見は,種間におけるBMP経路調節におけるTSGの役割が保存されていることを示唆している.