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Biology Coursework on Tissue Engineering

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Introduction

Tissue Engineering Information about my report 1st Aspect of Biology -Embryonic stem cells and what they are (Page 2) 2nd Aspect of Biology - Medical use of stem cells for Articular Cartilage (Page 5) Bibliography (Page) Word Count: 1,630 Target Audience: Students in AS-Level wishing to learn how tissue engineering can be used. Tissue Engineering What is in this report? The report will inform you about tissue engineering with embryonic stem cells and an example of its uses. In detail the report will tell you how tissue engineering techniques can be used with embryonic stem cells and how they can repair articular cartilage. Ethical issues will be discussed in the report. Future developments and relevant data will be shown for each aspect. What is tissue engineering? Tissue engineering is where the employment of natural biology allows great success in developing therapeutic strategies aimed at the replacement, repair, maintenance, and the enhancement of tissue function. How can tissue engineering be used? Tissue engineering can be used for the replacement in different tissue parts of the body. Stem cells can be used with the tissue engineering techniques for in the body. It is especially good to use embryonic stem cells, as they have not yet been assigned a specific role in the body. How it tissue engineering carried out? For tissue engineering to be carried out you need to understand the cell cycle. ...read more.

Middle

The stem cell is then kept in remote place away from each and the rest of the embryo (which would later be thrown away). Hopefully the stem cells would be cultured and develop into tissues that can be used for transplantation. Problems with using stem cells in medicine Even though scientists may be able to get the stem cells into the body and into the right tissue, it may be rejected by the immune system of the person the cells are needed for. This is known as transplant rejection and there are many ways to get around it. One of the ways would be to use tissue typing. This type of practice has been used for decades when finding a suitable donor for blood transfusion. Ethical concerns about the use of stem cells There are no ethical objections to using multipotent stem cells copied from adults and this is agreed by just about everyone. The worry is that most scientists may think that the use of stem cells are likely to become less important, for research and initial new treatments than the pluripotent stem cells, which can only be taken from human embryos. Different people see the status of the human embryo in another way. As stated in the SNAB Biology book, the official UK government committee set up to report on human stem cell research, which stated; 'A significant body of opinion holds that, as a moral principle, the use of any embryo for ...read more.

Conclusion

The cells have to undergo the cell cycle and the longest time taken is usually in the interphase, where the cells are producing enough protein and replicating DNA. After this has happen, the cells are then injected into the patient's knee under periosteal graft. This is usually successful but the patient would have to come back to redo later, maybe in the next 8-10 years, which is costly and sometimes depressing to the patient. Issues and Concerns with this process Every human being has moral views about what they thing is right or wrong, but there is no one universal way or acceptance to decide whether something is ethically acceptable or not. Instead there are a number of frameworks which allows you to work out whether a particular action would be right or wrong. Normally, if you accept the principles the framework is based you would get the same answer, but that is not always the case, and therefore that's why there are intelligent and kind people to help us with this. There are four main frameworks; rights and duties, maximising the amount of good in the world, making a decision for yourself, and leading a virtuous life. In this case most people feel that there is a certain right you have to follow or it they may find the answer within their religious faith. Secondly, people may feel that if it maximises the amount of good in the world, then it must be acceptable. Although, making a decision for yourself, (which is the third point), as every human can make their own decision. ...read more.

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