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Related Concept Videos

Stem Cell Niche01:26

Stem Cell Niche

The stem cell niche is the dynamic microenvironment where stem cells reside. Inside these niches, the cells may remain undifferentiated, undergo high self-renewal, or become lineage-specific progenitors. Stem cells coexist with other niche cells, such as stromal cells. They also interact closely with the ECM. Cell-cell and cell-matrix communication occur via adhesion molecules or soluble factors that signal the stem cells and determine their fate. Stromal cells also provide survival signals to...
Stem Cell Culture01:17

Stem Cell Culture

Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...
Multipotency of Hematopoietic Stem Cells01:19

Multipotency of Hematopoietic Stem Cells

The hematopoietic stem cells or HSCs are multipotent, meaning they can differentiate and give rise to all blood and immune cells. HSCs are maintained in the quiescent stage until an external stimulus initiates their differentiation. The multipotent HSCs exist as two heterogeneous populations, long-term repopulating cells (LTRC) and short-term repopulating cells (STRC). The two HSC populations have different surface markers or receptors and are classified based on quiescence and long-term...
Stem Cell Therapy for Tissue Regeneration01:21

Stem Cell Therapy for Tissue Regeneration

Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
The two main cell types that...
Source And Potency Of Stem Cells01:27

Source And Potency Of Stem Cells

Stem cells are undifferentiated cells with extensive self-renewal properties that help them maintain their population during the fetal and adult stages of life. They can specialize in all cell types of the human body. However, their differential potential may vary and can be classified into five types. Stem cells can be (1) Totipotent, (2) Pluripotent, (3) Multipotent, (4) Oligopotent, and (5) Unipotent. Each stem cell has a specific origin; the fertilized egg or zygote is a totipotent cell and...
Maintenance of the ES Cell State01:14

Maintenance of the ES Cell State

The cells of the blastocyst inner cell mass only remain pluripotent for a short time. This state of pluripotency and self-renewal can be maintained in embryonic stem (ES) cell culture by adding specific chemicals or growth factors to ensure the cells can continue dividing and later differentiate into different cell types. In some cases, the cells are grown on a feeder layer of differentiated cells, which provides the growth factors and extracellular matrix components necessary for stem cell...

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Sustained interaction: the new normal for stem cell repositories?

Rosario Isasi1, Bartha M Knoppers, Geoffrey Lomax

  • 1Centre of Genomics and Policy, McGill University, Montreal, Quebec, Canada. rosario.isasi@mcgill.ca

Regenerative Medicine
|November 5, 2011
PubMed
Summary

Stem cell repositories can enhance research utility and donor rights through sustained donor interaction and prospective informed consent. This approach respects autonomy and privacy while improving sample quality and traceability for scientific advancement.

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Area of Science:

  • Biomedical Research
  • Biobanking
  • Stem Cell Science

Background:

  • Stem cell repositories face the challenge of balancing donor interests with scientific progress.
  • Maintaining donor autonomy and privacy is crucial while maximizing the scientific utility of stem cell lines.

Purpose of the Study:

  • To explore how sustained interaction with stem cell donors can benefit both donors and research.
  • To investigate methods for advancing donor interests (autonomy, privacy) and increasing stem cell line utility.

Main Methods:

  • Analysis of ethical considerations in stem cell donation and research.
  • Examination of informed consent processes and donor recontact strategies.
  • Discussion of prospective approaches to donor engagement in stem cell banking.

Main Results:

  • Tracing stem cell lines to donors, supported by informed consent, enhances donor access to research outcomes.
  • Donor traceability facilitates quality control and safety measures, benefiting basic and clinical research.
  • Well-designed recontact and withdrawal protocols respect donor preferences and mitigate data limitations.

Conclusions:

  • A prospective approach to informed consent is essential for stem cell repositories.
  • Sustained donor interaction is key to respecting autonomy, privacy, and advancing scientific integrity.
  • Balancing donor rights with research needs requires robust, forward-thinking consent and engagement strategies.