Stem Cell Division
Stem Cell Division - Related Videos
05:44
Cell Division - Concepts
0 Views •
2019
Cell division is fundamental to all living organisms and required for growth and development. As an essential means of reproduction for all living things, cell division allows organisms to transfer their genetic material to their offspring. For a unicellular organism, cellular division generates a completely new organism. For multicellular organisms, cellular division produces new cells for the general development of the organism, as well as produces healthy cells to replace damaged cells from...
06:20
Cell Division - Student Protocol
0 Views •
2019
Observing the Cell Cycle in a Root Tip ExpandHypotheses: The experimental hypothesis is that in root tips slices that have been treated with nocodazole, a chemical that interferes with microtubular polymerization, all of the cells will be arrested at the same stage of the cell cycle and that in untreated onion tip slices all of the different stages of the cell cycle will be visualized. The null hypothesis is that there will be no differences in mitosis between the two groups and that different...
00:53
Cell Division - Instructor Prep
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2019
Preparation of Onion Root Tips and Solutions ExpandFor the cell cycle experiment using root tips, first, leave an onion suspended over a beaker of water to grow roots for several days. Then, clean the onion roots of any dirt or debris. Next, in a 1.5 mL tube, dissolve 10 mcg of nocodazole per 1 mL of dimethyl sulfoxide solution, making 1 tube per student. Finally, set out all of the other tools, materials, and reagents from the list of materials onto each student's lab bench.
10:03
An Introduction to Cell Division
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2023
Cell division is the process by which a parent cell divides and gives rise to two or more daughter cells. It is a means of reproduction for single-cell organisms. In multicellular organisms, cell division contributes to growth, development, repair, and the generation of reproductive cells (sperms and eggs). Cell division is a tightly regulated process, and aberrant cell division can cause diseases, notably cancer. JoVE's Introduction to Cell Division will cover a brief history of the landmark...
22:06
Derivation of Hematopoietic Stem Cells from Murine Embryonic Stem Cells
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Cited by 8 •
2007
This protocol details the derivation of transplantable hematopoietic stem cells from mouse embryonic stem cells (ESC) and their subsequent injection into lethally irradiated recipient mice. Briefly, ESC are differentiated as embryoid bodies, which are then infected with retroviral HoxB4 and co-cultured with OP9 stromal cells and hematopoietic cytokines.
FAQs
During mitosis, a stem cell first duplicates its DNA and then separates the duplicated chromosomes before the cell divides. This sequence allows each daughter cell to receive genetic material and supports either continued production of similar cells or a change in developmental potential. The division pattern therefore links chromosome distribution with the balance between maintaining a stem-cell population and generating new cell types.
The key difference is the effect on population balance. Symmetric division generates two similar daughter cells, whereas asymmetric division preserves one stem-cell identity while producing a progenitor. This distinction lets a tissue either maintain or adjust its stem-cell supply while also creating cells that can contribute to later development or repair.
The niche provides regulatory signals that influence whether division preserves stem-cell identity or changes developmental potential. Its role is important because the same basic mitotic process can contribute to different biological outcomes depending on surrounding conditions. Studying this relationship helps explain how tissues coordinate cell production with maintenance and regeneration.
Symmetric and asymmetric outcomes represent different ways to manage developmental potential, not separate forms of chromosome duplication. Both occur within mitotic division, but they differ in how the two daughter cells relate to stem-cell identity. This comparison is useful when interpreting whether a division primarily replenishes similar cells or begins a pathway toward progenitor production.
A basic study of stem cell division can follow three linked features: DNA duplication, chromosome separation, and the identities of the resulting daughter cells. Researchers can then relate those outcomes to the surrounding niche, asking whether division produced two similar cells or one stem cell and one progenitor. This framework connects cellular events with developmental potential.
Stem cell division is relevant to embryonic development because controlled changes in cell number and fate are required as tissues form. The same biological principles matter in tissue repair, where new cells must support regeneration. Examining symmetric and asymmetric outcomes helps researchers connect individual divisions with larger changes in developing or recovering tissues.
In cancer research, the balance between preserving stem-cell characteristics and producing progenitor cells provides a framework for examining control of cell numbers and fate. In regenerative medicine, understanding this balance is important for approaches that support tissue restoration. These applications share a central challenge: directing division without losing the desired developmental potential.