類人猿の網膜における胞細胞と周辺細胞の分子分類と比較分類
Yi-Rong Peng1, Karthik Shekhar2, Wenjun Yan1
1Center for Brain Science and Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA.
Cell
|February 5, 2019
まとめ
研究者は単細胞RNA配列を用い,霊長類の細胞をマッピングした. これは外周網膜とマウスモデルとの重要な違いを明らかにし,人間の網膜疾患の理解を助けます.
科学分野:
- 神経科学
- ゲノミクス
- 眼科について
背景:
- 霊長類の高鋭度視力は,多くのモデル生物に欠けている網膜領域であるフォベアに依存しています.
- このアクセシビリティのギャップのために,フーヴェアル機能と疾患の理解は制限されています.
研究 の 目的:
- 詳細なマカクの細胞図と 周辺の網膜を作るために
- マウスの網膜細胞タイプと比較し,保存された特徴と異なる特徴を特定します.
- 細胞タイプと遺伝子発現を 人間の網膜疾患と関連付けるため
主な方法:
- 16万5千以上の細胞で単細胞RNAシーケンシング (scRNA-seq) を利用した.
- マカクのフォベア,外周網膜,マウスの網膜を比較した.
- ヒトの網膜疾患に関連する遺伝子を特定の細胞タイプと網膜領域にマッピングした.
主要な成果:
- >60種類の細胞が特定され,その >80%はフォベアと周辺の間で共有されているが,その割合と遺伝子発現は異なっている.
- 内部ニューロンの種類は高いが,霊長類とマウスの間では 投影ニューロンの差異が見られた.
- 人間における重要なマカクの網膜細胞の保存が確立された.
- 特定の細胞タイプと網膜領域と関連した190以上の遺伝子
結論:
- 霊長類のフォベアと網膜の包括的な細胞アトラスを提供しています.
- 種と網膜の領域にわたって保存され,異なる細胞プログラムが強調されます.
- ヒトの網膜疾患を単細胞レベルで研究するための枠組みを提供する.
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