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Embryonic stem cell (ESC) research holds the potential to completely revolutionize the world of regenerative medicine, yet it is often met with ethical resistance. Here I would like to argue that embryonic stem cell research is both ethically permissible on rational grounds ���Ի���ethically essential due to its scientific, economic, and social benefits.

What exactly binds some people to the idea that utilizing an embryo before it has any ability to feel pain, for the betterment of research, is so inherently wrong despite its benefits to society? In some cases, the answer is religious or spiritual beliefs. In a religious sense, life is viewed as a sacred gift from a divine source, imbued with purpose and meaning, with the soul understood to begin at conception. Therefore, from this point of view any practice which deliberately destroys human embryos is inherently wrong.

With this information, it is important to note that the point of this paper is not to argue for or against religious beliefs in science, but instead to provide a nuanced argument for ESC research. It is important to include and respect diverse viewpoints and thought processes in the world of regenerative medicine and innovation, however, it cannot reasonably be argued that an individual's personal religious belief should interfere with the transformative potential ESC research has. Ultimately, it is not the responsibility of engineers and scientists to try to persuade religious individuals to abandon their convictions, but instead to articulate a nuanced and ethical stance with clarity and integrity.

Addressing misinformation is an essential first step; without a clear understanding of embryonic stem cell research, from the use of embryos to its potential impacts, many form opinions based on misconceptions rather than facts. ESC research is the study of stem cells from the inner mass of human embryos due to the regenerative properties of these pluripotent cells. ESCs have the potential to develop into any cell type in the body as they continuously undergo cell division, offering the potential to replace damaged or diseased tissues and organs. Additionally, embryos used in embryonic stem cell research come from eggs that were lab-formed and fertilized at in vitro fertilization clinics but never implanted in women's uteruses; therefore the gametes used are donated with informed consent from donors. In turn, these ESCs provide an opportunity to understand human and disease development, all while aiding in the development of new therapies.

Understanding ESC research involves recognizing the significance of regulations, such as the 14-day rule, which is essential to the ethical framework of the field. The 14-day rule is an ethical limit that restricts in vitro research on human embryos to the first 14 days after fertilization meaning this embryo is no larger than a poppy seed when ESC research is conducted. This rule exists to be a compromise between ethical considerations, scientific progress, and public opinion. Therefore, human embryos are used in ESC research long before the development of cognitive abilities, sentience, pain receptors, or a cerebral cortex. Embryos are unable to feel pain until at least 24-25 weeks of gestation, the cerebral cortex at its earliest forms during the second month of pregnancy, complete homeostasis is typically achieved from week 13 to week 27, and finally, embryos are not considered sentient, as the necessary neural connections for experiencing consciousness are not yet developed. Therefore, these embryos are nowhere near having developed any of these biologically defining factors during the allotted 14-day rule. However, this is not to say that the embryo should be disregarded entirely; instead that the ethical values of both parties should be reasonably weighed against the potential benefits that could come from using embryos for research.

Through understanding these embryonic capabilities, another common ethical concern arises; using embryos in research denies them a potential future. However, this position overlooks the practical realities surrounding unused embryos, which are rarely destined for a lived existence; “if they are not destroyed in the process of research, they are instead destined to languish in freezers until they are destroyed for some other reason”. Thus, their application represents a valuable contribution to scientific progress at a minimal ethical cost.

ESC research shows great promise in improving understanding of disease development and mechanisms due to the pluripotency of these cells, allowing scientists to model disease processes, study cellular mechanisms, and identify potential therapeutic targets, therefore improving human development. ESCs can be used to create disease models by introducing genetic mutations or exposing them to environmental stressors, mimicking the conditions that lead to disease. Understanding disease development allows us to promote new breakthroughs in the field of medicine and further advance human development.

One core issue that hinders one's well-being, negatively impacting human development, are disease-induced premature deaths. For example, cardiovascular diseases (CVDs) are the “leading cause of death globally with an estimated 19.8 million deaths in 2022, representing approximately 32% of all global deaths.” Intrinsically, disease-induced premature deaths rob one's freedom and opportunity to live a fulfilling life, significantly decreasing well-being, quality of life, and gradually diminishing human development. However, ESC research has the potential and has demonstrated its ability to improve human development.

ESC research can be used in drug testing by utilizing these cells’ pluripotent characteristics to mimic human tissues and organs. This allows scientists to test drug efficacy, therapeutic effects, and potential toxicity on these ESC models before moving onto clinical trials, accelerating the drug development process and improving safety. ESCs can additionally be differentiated into 3D structures called organoids, which mimic the structure and function of specific human organs. Through organoids, scientists can directly test a drug’s potential effects on specific cell types or organs, aiding in the production of drugs that target different diseases.

Some may argue that while ESC research has brought plenty of promising results, it can also be done by using non-embryonic adult stem cells or induced pluripotent stem cells (iPSCs), offering a viable alternative to living donor stem cells. However, simply because these stem cells are obtained without the inclusion of embryos does not necessarily make them the better option. Adult stem cells are limited to differentiating into different cell types of their tissue of origin and are also difficult to isolate in their pure form, therefore proving difficult to use adult stem cells to treat a larger range of diseases. On the other hand, while iPSCs increase genetic instability leading to chromosomal abnormalities and tumorigenic cells iPSCs also have the ability to create patient-specific stem cells in turn enabling “advancement in cardiovascular precision medicine.” Therefore, in the case of iPSCs, it is reasonable to argue that ESCs and iPSCs should coexist in a scientific setting as they are both essential resources in research and medicine.��

California Proposition 71 exemplifies ESC research’s transformative impact through real world results. This proposition legalized and funded stem cell research, creating the California Institute for Regenerative Medicine (CIRM) to oversee this research. Proposition 71 has enabled over 90 clinical trials involving over 4,000 patients for over 75 neurodegenerative diseases and various cancers, created over 56,000 full-time jobs (with salaries higher than the state average), and generated an estimated $10.7 billion increase in gross revenue for the state's economy by the end of 2018. Meaning, with funding and permission by the government, the CIRM was able to effectively create therapies meant to treat diseases that lack an effective remedy, therefore, reducing medical spending and improving the quality of life for people in the state of California.

In an ideal world, scientific progression would not call for these discussions that require human lives to be weighed; however giving up embryos that would have been discarded for the benefits of many is a necessary compromise to be made. Amidst ongoing ethical debates, ESC research has paved the way for revolutionary breakthroughs in regenerative health; from offering hope to those suffering from rare immune deficiency diseases to restoring movement and speech in stroke survivors, the possibilities of ESC research are endless. The regenerative abilities of these stem cells hold the power to do unimaginable things for those burdened by these debilitating diseases, all while providing medical, economic, and individual benefits through ESC research.

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