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Taste Buds and Receptors01:20

Taste Buds and Receptors

5.5K
Gustation, or the sense of taste, is intrinsically linked to the anatomical structures located on the tongue. This organ's surface, along with the entirety of the oral cavity, is adorned with stratified squamous epithelium. Evident on the tongue are elevated structures known as papillae (singular = papilla), which house the mechanisms for the transduction of gustatory stimuli. Four distinct types of papillae exist, each identified by their unique morphological attributes: the circumvallate,...
5.5K
The Physiology of Taste01:24

The Physiology of Taste

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The perception of a salty flavor is facilitated by sodium ions within the oral salivary fluid. Upon consumption of a salty substance, salt crystals disassemble, leading to the liberation of its constituents—Na+ and Cl- ions. These ions subsequently dissolve into the salivary fluid present in the oral cavity. The external environment of the gustatory cells experiences an elevation in Na+ concentration, thereby establishing a potent concentration gradient. This gradient propels the...
8.0K
Gustation01:43

Gustation

52.7K
Gustation is a chemical sense that, along with olfaction (smell), contributes to our perception of taste. It starts with the activation of receptors by chemical compounds (tastants) dissolved in the saliva. The saliva and filiform papillae on the tongue distribute the tastants and increase their exposure to the taste receptors.
52.7K
Conditioned Taste Aversion01:14

Conditioned Taste Aversion

1.1K
Conditioned taste aversion, also known as sauce béarnaise syndrome, is a phenomenon in which an individual develops an aversion to a certain food taste following a negative experience, typically illness. This form of aversion is a type of classical conditioning in which the taste of the food (conditioned stimulus, CS) is associated with the experience of illness (unconditioned stimulus, UCS).
A notable characteristic of conditioned taste aversion is that it often requires only a single...
1.1K
The Tongue and Taste Buds00:49

The Tongue and Taste Buds

41.3K
The surface of the tongue is covered with various small bumps called papillae, which either distribute what has been ingested (filiform papillae) or contain the sensory taste (or gustatory) receptor cells (fungiform, circumvallate, and foliate papillae). Embedded within each taste-related papilla are the taste buds—clusters of 30 to 100 gustatory receptor cells.
41.3K
Tactile and Chemical Senses01:27

Tactile and Chemical Senses

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Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex.
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New Methods to Study Gustatory Coding
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New Methods to Study Gustatory Coding

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味覚系を再構築する

Hojoon Lee1,2, Lindsey J Macpherson1,2, Camilo A Parada1,2

  • 1Howard Hughes Medical Institute, Department of Biochemistry and Molecular Biophysics, Columbia College of Physicians and Surgeons, Columbia University, New York, New York 10032, USA.

Nature
|August 10, 2017
PubMed
まとめ
この要約は機械生成です。

味覚受容体の細胞は絶えず再生しますが 神経細胞との特定の接続を維持しています SEMA3AやSEMA7Aのような誘導分子は 精密な味覚配線を保証し 信号の完全性を保ちます

さらに関連する動画

Generation and Culture of Lingual Organoids Derived from Adult Mouse Taste Stem Cells
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Generation and Culture of Lingual Organoids Derived from Adult Mouse Taste Stem Cells

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Author Spotlight: Advances in Chemoreception – From Insect Odor Receptors to Non-Coding RNAs
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関連する実験動画

Last Updated: Feb 25, 2026

New Methods to Study Gustatory Coding
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New Methods to Study Gustatory Coding

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Generation and Culture of Lingual Organoids Derived from Adult Mouse Taste Stem Cells
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Generation and Culture of Lingual Organoids Derived from Adult Mouse Taste Stem Cells

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Author Spotlight: Advances in Chemoreception – From Insect Odor Receptors to Non-Coding RNAs
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科学分野:

  • 神経科学
  • 感覚生物学
  • 分子生物学

背景:

  • 哺乳類の味蕾には5つの基本的な味覚を代表する50〜100の味覚受容体細胞 (TRC) がある.
  • 成熟したTRCは寿命が短く (5〜20日) 幹細胞によって補充されます.
  • TRCとニューロンの間の正確な接続を維持することは,味覚信号の忠誠度にとって極めて重要です.

研究 の 目的:

  • 味覚受容体細胞とそれに対応する神経細胞の正確な配線を保証するメカニズムを調査する.
  • 信号伝送の整合性は,迅速なセルターンオーバーにもかかわらず,どのように維持されているかを理解する.

主な方法:

  • 苦味と甘味のTRCが標的ニューロンに与える指示信号を検証した.
  • 誘導分子SEMA3AとSEMA7Aを使用した.
  • 特定のTRCクラスにおける誘導分子の標的表現を持つエンジニアリングされたマウス

主要な成果:

  • 苦いTRCと甘いTRCは,異なる誘導分子 (SEMA3AとSEMA7A) を使用して標的ニューロンを指示します.
  • SEMA3AまたはSEMA7Aの標的表現は,甘くて苦い細胞を誤導した結果でした.
  • 改造されたマウスは 甘い,苦い,酸い刺激に対して ニューロンの反応が変化しました

結論:

  • 哺乳類の味覚システムの 外部配線を明らかにした
  • 誘導分子がラベルラインの感知回路の整合性をどのように保証するかを示した.
  • 細胞の周回時に感覚経路の忠誠性を維持する分子シグナルの役割を強調した.