Introduction: Antibody labeling is a valuable and versatile technique used in medicine and research. To put it simply, an antibody is a type of protein that an animal makes in response to a foreign antigen. This may be a bacterium, a virus or other substance present in the blood that is recognized as non-self.
There is not a single process in the mammalian body that can occur without the cooperation of one or more proteins. These are huge molecules, also known as macromolecules, that are made from smaller chemical units known as amino acids. The order in which the individual amino acids are strung together dictates the 3D shape of the finished protein. It is the specific shape of a protein that determines its function in the organism.
Enzymes are necessary to catalyze, or speed up, the millions of reactions that take place in our cells every second of every minute of every hour of every day of our lives. In fact, when we eat protein, there are enzymes that help to break down each molecule of protein into its own amino acids. These amino acids are then used to make new proteins. Immunoglobulins are a different type of protein.
Antibody Production: In the human body, antibodies, or immunoglobulins (Ig's) are produced by the "B" cells of the immune system when a foreign antigen, usually a cluster of atoms within the structure of a particular protein, is detected. The process of immunization is based on this principle. A tiny amount of inactive virus is injected into the body, inducing it to produce antibodies against it.
Enough antigen is injected to trigger the formation of Igs without making the whole organism sick. If the organism, such as a human, encounters the antigen producer at a later date, say the flu virus, their B cells will be stimulated to manufacture buckets of antibodies to halt the infection.
In the research lab, Ig synthesis begins with the injection of antigen into an animal. Rabbits are often the animal used, although other mamalian species like mice or donkeys are also used. The animal's B cells produce antibodies to the antigen and are then harvested from their blood. Sometimes the primary antibody is conjugated to a second antibody to amplify the visual signal and then attached to a molecular probe.
More often, the primary Ig is attached to a second antibody that has been raised in a different animal, and then attached to the molecular probe, for example a fluorescent marker. When the whole three-piece molecular system is exposed to ultraviolet light, it emits fluorescence that is detected as a brilliant flash of color. Antibodies may be raised to different antigens and different colored fluorescent markers to confirm the identity of the cells to which it is later applied.
Antibody labeling is a frequently used tool in the research of neuro-oncology, or brain tumors. Cells are grown on microscope slides in a special culture medium, to which different substances, such as growth factors, may be added. The cells are then labeled with the fluorescent preparations and a snapshot is viewed of specific proteins present in the cell.
There is not a single process in the mammalian body that can occur without the cooperation of one or more proteins. These are huge molecules, also known as macromolecules, that are made from smaller chemical units known as amino acids. The order in which the individual amino acids are strung together dictates the 3D shape of the finished protein. It is the specific shape of a protein that determines its function in the organism.
Enzymes are necessary to catalyze, or speed up, the millions of reactions that take place in our cells every second of every minute of every hour of every day of our lives. In fact, when we eat protein, there are enzymes that help to break down each molecule of protein into its own amino acids. These amino acids are then used to make new proteins. Immunoglobulins are a different type of protein.
Antibody Production: In the human body, antibodies, or immunoglobulins (Ig's) are produced by the "B" cells of the immune system when a foreign antigen, usually a cluster of atoms within the structure of a particular protein, is detected. The process of immunization is based on this principle. A tiny amount of inactive virus is injected into the body, inducing it to produce antibodies against it.
Enough antigen is injected to trigger the formation of Igs without making the whole organism sick. If the organism, such as a human, encounters the antigen producer at a later date, say the flu virus, their B cells will be stimulated to manufacture buckets of antibodies to halt the infection.
In the research lab, Ig synthesis begins with the injection of antigen into an animal. Rabbits are often the animal used, although other mamalian species like mice or donkeys are also used. The animal's B cells produce antibodies to the antigen and are then harvested from their blood. Sometimes the primary antibody is conjugated to a second antibody to amplify the visual signal and then attached to a molecular probe.
More often, the primary Ig is attached to a second antibody that has been raised in a different animal, and then attached to the molecular probe, for example a fluorescent marker. When the whole three-piece molecular system is exposed to ultraviolet light, it emits fluorescence that is detected as a brilliant flash of color. Antibodies may be raised to different antigens and different colored fluorescent markers to confirm the identity of the cells to which it is later applied.
Antibody labeling is a frequently used tool in the research of neuro-oncology, or brain tumors. Cells are grown on microscope slides in a special culture medium, to which different substances, such as growth factors, may be added. The cells are then labeled with the fluorescent preparations and a snapshot is viewed of specific proteins present in the cell.
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