Advancements in Stem Cell Research

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Questions and Answers

What was the significance of stem cells in 1999 according to Science magazine?

  • They were proven to have no potential in regenerating tissue types
  • They were discovered to cause safety concerns in research
  • They were linked to increased histocompatibility issues
  • They were named 'Advancement of the Year' for their ability to differentiate into other tissue types (correct)

What is a key challenge hindering the use of embryonic stem cells in cell therapy and research?

  • Safety concerns
  • Overwhelming flexibility
  • Histocompatibility issues (correct)
  • Lack of differentiation potential

Which type of stem cells do not face histocompatibility, safety, and concerns like their embryonic counterparts?

  • Cancer stem cells
  • Adult stem cells (correct)
  • Induced pluripotent stem cells
  • Embryonic stem cells

What is one key area where adult stem cells have been used in clinical studies on humans?

<p>Stem cells obtained from bone marrow (A)</p> Signup and view all the answers

What is the main difference between induced pluripotent stem cells (iPSCs) and adult stem cells?

<p>iPSCs are derived from embryos, while adult stem cells are found in adult tissues. (D)</p> Signup and view all the answers

What is one potential application of stem cell therapy mentioned in the text?

<p>Regenerating functional organs to replace damaged ones. (A)</p> Signup and view all the answers

What is a major challenge associated with transplanting stem cells into patients?

<p>The risk of tumors forming due to undifferentiated cells. (D)</p> Signup and view all the answers

Why do iPSCs provide a personalized approach to treatment?

<p>Since they can be derived from a patient's own cells. (C)</p> Signup and view all the answers

What is one ethical concern associated with using embryonic stem cells in research?

<p>Questions about the sanctity of human life. (B)</p> Signup and view all the answers

What was the common challenge hindering the use of embryonic stem cells in cell therapy and research?

<p>Ethical dilemmas (C)</p> Signup and view all the answers

Which characteristic of adult stem cells is still under investigation?

<p>Plasticity (D)</p> Signup and view all the answers

In which group of stem cells is the differentiation potential well characterized in mice and humans?

<p>Embryo stem cells (B)</p> Signup and view all the answers

What is the main source of stem cells used in numerous clinical trials in humans mentioned in the text?

<p>Bone marrow (D)</p> Signup and view all the answers

Why are histocompatibility, safety, and ethical issues hurdles for embryonic stem cell use?

<p>Potential immune rejection (C)</p> Signup and view all the answers

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