Embryonic Microinjection Alternative
Embryonic Microinjection Alternative - Related Videos
08:12
Zebrafish Microinjection Techniques
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2023
One of the major advantages to working with zebrafish (Danio rerio) is that their genetics can be easily manipulated by microinjection of early stage embryos. Using this technique, solutions containing genetic material or knockdown constructs are delivered into the blastomeres: the embryonic cells sitting atop the yolk of the newly fertilized egg. Delivery into the cytoplasm is achieved either through direct injection into the blastomere, or via natural cytoplasmic movements that occur after a...
04:58
Microinjection of Recombinant RCAS(A) Retrovirus into Embryonic Chicken Lens
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Cited by 1 •
2023
This protocol paper describes the methodology of embryonic chicken lens microinjection of an RCAS(A) retrovirus as a tool for studying in situ function and expression of proteins during lens development.
10:51
A System for ex vivo Culturing of Embryonic Pancreas
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Cited by 23 •
2012
Here, we describe a method for isolation, culture and manipulation of mouse embryonic pancreas. This represents an excellent ex vivo system for studying various aspects of pancreatic development, including morphogenesis, differentiation and growth. Pancreatic bud explants can be cultured for several days and used in a range of different applications, including whole-mount immunofluorescence and live imaging.
07:42
Activation of Apoptosis by Cytoplasmic Microinjection of Cytochrome c
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Cited by 15 •
2011
In this protocol, we describe the direct cytoplasmic microinjection of cytochrome c protein into fibroblasts and primary sympathetic neurons. This technique allows for the introduction of cytochrome c protein into the cytoplasm of cells and mimics the release of cytochrome c from mitochondria, which occurs during apoptosis.
08:52
Microinjection-based System for In Vivo Implantation of Embryonic Cardiomyocytes in the Avian Embryo
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2019
In this method, embryonic cardiac tissues are surgically microdissected, dissociated, fluorescently labeled, and implanted into host embryonic tissues. This provides a platform for studying the individual or tissue level developmental organization under ectopic hemodynamic conditions, and/or altered paracrine/juxtacrine environments.
FAQs
Brief electrical pulses transiently increase cell-membrane permeability. This temporary change allows nucleic acids to enter embryonic cells without inserting a needle into each cell. Because the permeability change is transient, the approach is suited to delivering material during early embryonic stages. Its significance is not simply avoiding a needle, but enabling genetic manipulation across embryos in a less individually intensive format.
Conventional microinjection requires inserting a needle into individual cells, whereas an alternative such as electroporation uses a physical treatment to make embryonic cell membranes temporarily permeable. This distinction can reduce the time required to process many samples and offers an option when individual-cell injection is technically difficult or inefficient. The methods therefore differ in both manipulation strategy and practical scalability.
The broader group of alternatives can introduce genetic material, proteins, or other reagents into early embryos. Electroporation is specifically described as allowing nucleic acids to enter embryonic cells after brief electrical pulses increase membrane permeability. This distinction matters when selecting an approach: the general category has multiple payload possibilities, while the stated electroporation mechanism directly supports nucleic-acid delivery.
Early embryos provide a biological context in which introduced material can support studies of gene expression, genome engineering, development, and cell fate. Applying an alternative at this stage connects the delivered reagent with questions about how embryos develop and how cells acquire distinct identities. The methods therefore serve not only as delivery tools, but also as experimental means for examining gene function during development.
A basic electroporation workflow brings early embryos and the intended nucleic acid together while brief electrical pulses are applied. The pulses transiently increase membrane permeability, allowing the nucleic acid to enter embryonic cells. The source material does not specify voltage, pulse duration, equipment settings, or embryo-specific handling steps, so those conditions must be established separately for a particular experiment.
Researchers may choose an alternative when conventional microinjection is technically difficult, inefficient, or too slow for the number of embryos being studied. These methods can simplify embryo manipulation and reduce processing time for large sample sets. The choice is therefore especially relevant when an experiment requires genetic or molecular perturbation across many early embryos rather than repeated needle insertion into individual cells.
These approaches support experiments on gene expression, genome engineering, development, cell fate, and gene function. Introducing genetic material or other reagents into early embryos creates opportunities to examine how molecular changes relate to developmental outcomes and cellular identity. In biology, their value extends beyond delivery efficiency because they expand the experimental options available for connecting gene activity with embryonic processes.