一つの細胞,多くの運命

Colin Kunze^1,2, Ahmad S Khalil^1,2,3

¹Biological Design Center, Boston University, Boston, MA, USA.

Science (New York, N.Y.)

|January 20, 2022

まとめ

研究者は,哺乳類の細胞内の複数の安定状態を制御する合成遺伝子回路を設計しました. この突破は細胞の行動を生物学的応用で正確にプログラムすることを可能にします

科学分野:

合成生物学
セルラーエンジニアリング
分子システム生物学

背景:

哺乳類の細胞は複雑な制御ネットワークを持っています
特定の細胞機能を達成するためにこれらのネットワークを制御することは困難です
既存の方法は複数の安定した細胞状態をプログラムするための精度が欠けている.

研究の目的:

哺乳類の細胞をプログラムする新しい合成遺伝子回路を開発する
数多くの異なる安定した細胞状態を確立し維持する能力を実証する.
先進的なセルラー工学のための汎用的なプラットフォームを提供するためです

主な方法:

確立された分子生物学技術を用いた合成遺伝子回路の設計と構築.
哺乳類の細胞系における回路の実装
高通量アッセイと計算モデルを用いた細胞状態の特徴化.

主要な成果:

合成遺伝子回路は複数の異なる安定した細胞状態をプログラムし維持することに成功しました
複雑な細胞行動のプログラム性を証明した
エンジニアリング状態の安定性と強さを検証しました.

結論:

合成遺伝子回路は哺乳類の細胞に安定した状態をプログラムするための強力なツールです
この技術は細胞工学と合成生物学の分野を発展させています
治療応用と生物学的研究に新たな道を開きます

さらに関連する動画

14:08

Blastomere Explants to Test for Cell Fate Commitment During Embryonic Development

Published on: January 26, 2013

15.4K

08:48

Methods for the Study of Regeneration in Stentor

Published on: June 13, 2018

11.9K

関連する概念動画

00:57

Cellular Differentiation

4.0K

How does a complex organism such as a human develop from a single cell? It all starts from a single fertilized egg which gives rise to a vast array of cell types, such as nerve cells, muscle cells, and epithelial cells that characterize the adult? Throughout development and adulthood, cellular differentiation leads cells to assume their final morphology and physiology. Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions.
A zygote is a...

4.0K

01:51

Determination

19.5K

During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. Specification is demonstrated by removing a segment of an early embryo, “neutrally” culturing the tissue in vitro—for example, in a petri dish with simple medium—and then observing the derivatives. If the cultured region gives rise to cell types that it would normally generate in the embryo, this means that it is specified. In...

19.5K

01:28

Forced Transdifferentiation

2.0K

Transdifferentiation, also known as lineage reprogramming, was first discovered by Selman and Kafatos in 1974 in silkmoths. They observed that the moths’ cuticle-producing cells transformed into salt-producing cells. Many such cases of natural transdifferentiation occur in organisms. In humans, pancreatic alpha cells can become beta cells. In newts, the loss of the eye’s lens causes the pigmented epithelial cells to transdifferentiate into the lens cells.
Artificial...

2.0K

01:10

Zygotic Development And Stem Cell Formation

5.7K

The development of all multicellular organisms starts with the fusion of haploid cells called sperm and egg to form a diploid zygote. A zygote is a totipotent cell that can develop into a complete organism. The zygote undergoes cell division or cleavage to form an 8-cell mass. Until this stage, the cells are spherical, loosely attached, and remain totipotent. Totipotent cells are capable of developing both the embryonic and the extraembryonic tissues. However, as they continue to divide, they...

5.7K

01:15

Differentiation of Common Myeloid Progenitor Cells

3.4K

Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...

3.4K

01:27

Source And Potency Of Stem Cells

5.2K

Stem cells are undifferentiated cells with extensive self-renewal properties that help them maintain their population during the fetal and adult stages of life. They can specialize in all cell types of the human body. However, their differential potential may vary and can be classified into five types. Stem cells can be (1) Totipotent, (2) Pluripotent, (3) Multipotent, (4) Oligopotent, and (5) Unipotent. Each stem cell has a specific origin; the fertilized egg or zygote is a totipotent cell and...