老化と老化の細胞モデル

Byunggik Kim¹, Dong I Lee¹, Nathan Basisty²

¹Division of Cardiology, Department of Medicine, School of Medicine, Johns Hopkins University, Baltimore, MD 21205, USA.

Cells

|August 27, 2025

まとめ

インビトロモデルは老化と発達への介入を理解するために不可欠です研究者達は細胞操作の技術を探索し歳を取ることによる衰えを逆転させ健康的な老化を促しています

科学分野:

ゲロントロジーと細胞生物学
生物医学研究と疾患モデリング

背景:

老化は多くの慢性疾患の主な危険因子であり,細胞の基礎を研究する必要がある.
老化の生物学的メカニズムを理解することは人間の健康を延ばすための介入策の開発に不可欠です

研究の目的:

基礎的な発見から先進的な幹細胞の応用まで,老化研究における in vitro モデルの有用性を検討する.
細胞の老化を操作するための戦略を検証し,体全体にわたるヘルスパン介入へのインビトロ発見の翻訳について議論する.

主な方法:

不死細胞系とヒト誘導多能幹細胞 (iPSC) を含む重要なインビトロモデルについての議論
衰老を誘発し,時間的および生物学的老化を区別する方法を探求する.
セノリチク,エピジェネティック再プログラム,プロテオスタシスとミトコンドリア機能の調節などの実験戦略の分析.

主要な成果:

制限があるにもかかわらず,老化における特定のメカニズム的な問題を解明するために,in vitroモデルは非常に価値があります.
細胞の老化現象を操作する様々な実験戦略が有望である.
人間の誘発性多能幹細胞 (iPSC) は,老化と若返りの研究に変革の可能性を秘めています.

結論:

インビトロシステムは老化に関する研究における発見と治療試験に不可欠です
細胞の老化に関する知見を効果的な全生物戦略に変換することは依然として大きな課題です

キーワード:

心血管の老化細胞の老化エピジェネティック・リプログラミングインビトロモデル誘発性多能幹細胞 (iPSC)ミトコンドリア機能障害神経変性プロゲロイド症候群衰えることセノリチックス

さらに関連する動画

07:39

SA-β-Galactosidase-Based Screening Assay for the Identification of Senotherapeutic Drugs

Published on: June 28, 2019

24.2K

06:51

Techniques to Induce and Quantify Cellular Senescence

Published on: May 1, 2017

33.8K

関連する概念動画

02:15

Replicative Cell Senescence

3.7K

Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds...

3.7K

01:26

Aging

181

Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...

181

01:37

Mitochondria

14.9K

Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...

14.9K

01:19

The Effect of Aging on Tissues

2.4K

Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...

2.4K

02:41

Telomeres and Telomerase

5.4K

01:22

PI3K/mTOR/AKT Signaling Pathway

3.9K

The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a...