Endothelial Lineageへのトランスディファレンシエーションには,グリコリティック・スイッチが必要です
Li Lai1, Erin Reineke2, Dale J Hamilton2
1Department of Cardiovascular Sciences, Center for Cardiovascular Regeneration (L.L., J.P.C.), Houston Methodist Research Institute, TX.
Circulation
|December 28, 2018
まとめ
生まれながらの免疫信号は,線維細胞を内皮細胞に変換するために不可欠な,糖分解への代謝のシフトを誘発する. このプロセスはエピジェネティックな変化を含み,ATP-シトラートリアゼによって調節されます.
科学分野:
- 細胞生物学
- 代謝の調節
- エピジェネティクス
背景:
- 生まれつきの免疫信号の活性化により,線維細胞が誘発された内皮細胞の変異を容易にする.
- メタボリックシフトは,特に糖分解を含む,誘発された多能幹細胞の生成に関与しています.
研究 の 目的:
- 代謝変化,特に糖分解が,先天的な免疫によって引き起こされる変異の役割を調査する.
- 細胞運命を変換する過程で先天的な免疫,代謝,および表遺伝的変化を結びつける分子メカニズムを解明する.
主な方法:
- シーホースとメタボロミック・フルス・アッセイは, in vitro トランスディファレンシエーション中の代謝変化を分析するために使用された.
- マトリゲルプラグアッセイは,グリコリシス調節剤の変異に対するインビボ効果を評価するために使用された.
主要な成果:
- 内皮系マーカーの発現に先立ち,先天的な免疫の活性化後の急速な糖分分解スイッチが発生する.
- 誘発された内皮細胞生成を阻害し,その強化は改善した.
- ポリI:C刺激は,サイトレート代謝に関連する酵素 (Slc25A1,ATP-サイトレートライアス) を上昇させ,サイトレートの蓄積とヒストンのアセチル化が増加した.
結論:
- 生まれつきの免疫信号は,ATP-シトラートライアスによって調節される,トランスディフェリエンテーションに不可欠なグリコリティックスイッチを駆動します.
- この研究は,細胞変異における代謝再プログラムと表遺伝的変異の間の新しい関連性を明らかにしています.
関連する概念動画
Forced Transdifferentiation
2.3K
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...
Artificial...
2.3K
Other Glycolytic Pathways
904
The pentose phosphate pathway (PPP) operates in parallel with glycolysis, facilitating the metabolism of both pentoses and glucose. This pathway consists of two distinct phases: the oxidative and non-oxidative phases. While it does not directly generate ATP, the intermediates formed during the process can integrate into glycolysis, contributing to cellular energy metabolism when required.Oxidative Phase: NADPH ProductionThe oxidative phase of the pentose phosphate pathway is primarily...
904
Switching of BJT
860
Switching behavior in Bipolar Junction Transistors (BJTs) is a fundamental aspect utilized in various electronic circuits, particularly for digital logic applications like switches and amplifiers. In a typical switching circuit, a BJT alternates between cut-off and saturation modes, corresponding to the "off" and "on" states, respectively, thus behaving like an ideal switch.
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are...
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are...
860
Lineage Commitment
4.3K
Commitment is the process whereby stem cells:
4.3K
Requirements for Human Life
13.5K
The Earth and its atmosphere have provided humans with air, water, and food, but these are not the only requirements for survival. Humans also require a specific range of temperature and pressure that the Earth and its atmosphere provides.
Oxygen
Atmospheric air is only about 20 percent oxygen, but that oxygen is a key component of the chemical reactions that keep the body alive, including the reactions that produce ATP. Brain cells are susceptible to a lack of oxygen because they require a...
Oxygen
Atmospheric air is only about 20 percent oxygen, but that oxygen is a key component of the chemical reactions that keep the body alive, including the reactions that produce ATP. Brain cells are susceptible to a lack of oxygen because they require a...
13.5K
Proteins: Dietary Sources and Requirements
1.8K
Consuming animal-based products offers high-quality proteins that contain optimal levels and combinations of essential amino acids, crucial for tissue repair and growth. Foods like eggs, milk, fish, and most meats are a source of complete proteins. Legumes and cereals are abundant in proteins; however, they typically lack a full range of essential amino acids. As a result, they are considered incomplete protein sources. Some plant sources like soybeans, quinoa, and amaranth do contain complete...
1.8K


