干细胞哪里获取

生物细胞储存的技术和方法 2023年07月26日 08:29 66 im

Introduction

　　 Stem cells are unique cells that have the ability to transform into different types of cells and tissues in the human body. These cells play an important role in medical research and the development of therapies for various diseases and conditions. However, obtaining stem cells for research and therapeutic purposes is a highly regulated process, and there are only specific places where stem cells can be obtained legally and ethically.

Types of Stem Cells

　　 There are two main types of stem cells: embryonic stem cells and adult stem cells. Embryonic stem cells are derived from embryos that are leftover from in vitro fertilization treatments. Adult stem cells, also known as somatic stem cells, are found in various tissues throughout the body, such as bone marrow, adipose tissue, and blood.

Where to Obtain Embryonic Stem Cells

　　 Embryonic stem cells can only be obtained from embryos that are leftover from in vitro fertilization treatments. These embryos are donated by couples who have undergone fertility treatments and have no use for the remaining embryos. The embryos are donated voluntarily and with informed consent, and then the stem cells are extracted from them for research and therapeutic purposes.

Where to Obtain Adult Stem Cells

　　 Adult stem cells can be obtained from various tissues throughout the body, including bone marrow, adipose tissue, and blood. The most commonly used method for obtaining adult stem cells is through bone marrow aspiration, which involves extracting cells from the bone marrow in the patients hip bones using a special needle. Adipose tissue-derived stem cells can be obtained through liposuction procedures, while blood-derived stem cells can be obtained through a process called apheresis.

Regulations on Stem Cell Research

　　 Stem cell research is subject to strict regulations to ensure that the cells are obtained legally and ethically, and that they are used for the intended purposes. In the United States, the National Institutes of Health (NIH) regulates stem cell research through guidelines that outline the types of stem cells that can be used and the procedures for obtaining them. Any research that involves human subjects must also be approved by an institutional review board (IRB) to ensure that it meets ethical standards.

Conclusion

　　 In conclusion, stem cells are a valuable resource for medical research and therapy development. Embryonic stem cells can only be obtained from leftover embryos from in vitro fertilization treatments, while adult stem cells can be obtained from various tissues in the body. Regulations and guidelines are in place to ensure that stem cell research is conducted in an ethical and legal manner. By continuing to study and develop stem cell therapies, we may be able to find new treatments and cures for a variety of diseases and conditions.