干细胞定义和分类英 🦟 语（干细胞定义和分类英语怎么说 💐 ）

1、干细胞定义 🐋 和分 🌵 类英语

Stem Cell Definition and Classification

Definition

Stem cells are unspecialized cells that have the potential to develop into any type of cell in the body. They are characterized by:

Pluripotency: The ability to differentiate into all three germ layers (ectoderm, mesoderm, endoderm)

Selfrenewal: The ability to divide and generate more stem cells indefinitely

Classification

Stem cells are classified based on their origin and developmental potential:

1. Embryonic Stem Cells (ESCs)

Derived from the inner cell mass of a blastocyst (early embryo)

Highly pluripotent, able to differentiate into all cell types

Controversial due to ethical concerns

2. Adult Stem Cells (ASCs)

Found in various tissues and organs throughout the body

Multipotent or unipotent, limited differentiation potential

Less controversial than ESCs

Include:

Hematopoietic stem cells (bloodforming)

Mesenchymal stem cells (bone, cartilage, fat)

Neural stem cells (brain, spine)

3. Induced Pluripotent Stem Cells (iPSCs)

Derived from adult cells (e.g., skin cells)

Reprogrammed back to a pluripotent state

Similar to ESCs in terms of differentiation potential

No ethical concerns associated with their derivation

4. Cancer Stem Cells (CSCs)

Rare cells found in tumors

Able to selfrenew and drive tumor growth

Contribute to tumor resistance to treatment and recurrence

2、干细胞 🌺 定义和分类英语怎 🌿 么说

Definition of Stem Cells

"Stem cells are unspecialized cells that have the ability to differentiate into various specialized cell types."

Classification of Stem Cells

Embryonic stem cells originate from embryos and can differentiate into any type of cell in the body.

Adult stem cells reside in specific tissues and are more restricted in their differentiation potential, but can still give rise to a variety of cell types within their own tissue.

Induced pluripotent stem cells (iPSCs) are adult cells that have been reprogrammed genetically to resemble embryonic stem cells and have pluripotent potential.

3、干细胞 🍁 的定义和分类

干细 🐠 胞 🐳 的定 🐧 义

干细胞是一种未分化的细胞，具有自我更新和分化成各种特化细胞的能力。它。们是发育和组织修复中的关 🐶 键角色

干细 🦈 胞的分类 🐴

干细胞可以根据来源、分化潜力和分化阶段进行分类 🐠 。

根据 🕸 来源 🦢 分类 🐯 ：

胚胎干细 🐡 胞 (ESC)：来源于胚泡期胚胎的内细胞团。

成体干细胞 (ASC)：存在于组织 🐅 和器官中，负责组织自我更新 🐦 和修复。

感应多 🦅 能干细胞 (iPSC)：通过将成体细胞重新编程生成的人工干细胞。

根据分化潜 🐋 力 🐴 分类：

全能干细胞能：够分化成所 🐼 有成熟细胞类型。胚 🦆 胎干细胞和某些iPSC属。于 🕸 此类

多能干细胞能 🦍 ：够分化成一个胚层或组织谱系内的 🕊 多个细胞类型。例如，造。血干细胞 🐕

寡能干细胞能：够分化成少数几种细胞类 🐒 型。例如，祖细胞。

单能干细胞：仅能分 🐈 化成一种细胞类型。例如，角。质形成细 🐘 胞干细胞

根据分化 🐘 阶段分 🐵 类：

祖细 🌷 胞：未分化的细胞，具有限的分化潜力和自我 🦟 更新能力。

前体细胞：比祖细胞更 🐈 分 🦟 化，仍然具有自我更新能力。

干细胞：具有较高的自我更 🐧 新能力和分化潜力。

成体细胞：完全分化的细胞，没有自我更新能 🦉 力。

4、干细 🐱 胞的英文怎么写

Stem cell