Germ Cell Niche
Germ Cell Niche - Related Videos
10:41
Germ Cell Transplantation and Testis Tissue Xenografting in Mice
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Cited by 16 •
2012
Protocols for germ cell transplantation and testis tissue xenografting are described. Germ cell transplantation results in donor-derived spermatogenesis in recipient testes and represents a functional reconstitution assay for identification of spermatogonial stem cells (SSCs). Testis tissue xenografting reproduces testis development and spermatogenesis of various donor species in recipient mice.
02:59
Cell Fate Reprogramming of Nematode Germ Cells into Neurons
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2025
This video demonstrates cell fate reprogramming of nematode germ cells into neurons. Transgenic larvae of the nematode Caenorhabditis elegans are subjected to RNA interference (RNAi) to knock down a specific chromatin-regulating factor, making the germ cells of their progeny more susceptible to cell fate reprogramming. Heat shock is applied to the progeny, inducing the germ cells to express a neuron-specific transcription factor that triggers their transformation into neurons, which is...
01:26
Stem Cell Niche
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2023
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...
14:45
Transgenic Rodent Assay for Quantifying Male Germ Cell Mutant Frequency
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Cited by 28 •
2014
De novo mutations in the male germline may contribute to adverse health outcomes in subsequent generations. Here we describe a protocol for the use of a transgenic rodent model for quantifying mutations in male germ cells induced by environmental agents.
09:47
Differentiation of Newborn Mouse Skin Derived Stem Cells into Germ-like Cells In vitro
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Cited by 9 •
2013
In recent years the formation of germ cells using in vitro culture methods has been demonstrated using several different types of somatic stem cells. This article will visually present the differentiation of newborn mouse derived stem cells to early oocyte-like cells.
FAQs
Supporting somatic cells provide signals that help determine whether germ cells survive, remain capable of self-renewal, migrate within reproductive tissue, or begin differentiation. Their activity operates together with extracellular matrix components, hormones, and local growth factors rather than through a single signal. This coordination allows the tissue environment to guide germ cells through changing developmental and functional states.
The extracellular matrix contributes structural and signaling support to the local environment surrounding germ cells. In combination with somatic-cell signals and growth factors, it can influence how germ cells are positioned and how they respond to developmental cues. Changes in this coordinated environment may therefore affect migration, survival, self-renewal, and differentiation within reproductive tissues.
Hormones and locally produced growth factors help adjust the balance among germ cell survival, self-renewal, migration, and differentiation. Their effects depend on the surrounding tissue context and on signals from supporting cells and the extracellular matrix. Studying these interactions is important because altered signaling can disturb reproductive tissue development or germ cell function without requiring a defect in the germ cells alone.
Laboratory models can be used to examine how germ cells respond to combinations of somatic-cell signals, extracellular matrix components, hormones, and local growth factors. They help investigators study processes such as survival, self-renewal, migration, and differentiation in a controlled setting. These models also support research into human germ cell biology and may clarify how niche disruption produces disease-related outcomes.
A properly coordinated niche supports the signals required for germ cell maintenance and development. If interactions among supporting cells, matrix components, hormones, or growth factors become disrupted, germ cells may not survive, renew, migrate, or differentiate appropriately. This provides a mechanistic framework for investigating infertility and abnormal gonadal development as tissue-environment problems as well as cell-intrinsic problems.
Research in this area informs fertility preservation, reproductive medicine, and the design of laboratory systems for studying human germ cell biology. Understanding the signals that maintain or guide germ cells may help researchers evaluate reproductive tissue function and develop more representative experimental models. The same knowledge is also relevant when investigating germ cell tumors and other consequences of altered niche signaling.