In-Situ Hybridization; a Lab Procedure that Helps Locate Position of Specific DNA/RNA Sequences
In-Situ Hybridization (ISH) is a laboratory technique used to label
complementary DNA, RNA, or modified nucleic acids strands. ISH helps localize
specific DNA or RNA sequences in a small cross-section of tissues or an entire
tissue. There are two types of in-situ hybridization, such as chromogenic in-situ
hybridization (CISH) and fluorescence in situ hybridization (FISH), which are
used to identify the position of genes. FISH is a laboratory-based test that
can reveal the genetic makeup of cancer.
Fluorescence in-situ hybridization test can detect genetic abnormalities
associated with cancer, and thus, it is useful for diagnosing some types of the
disease. Thus, with the rising incidence of cancer worldwide, the
demand for in-situ hybridization is also increasing at a rapid pace.
Cancer is one of the leading causes of morbidity and mortality across the
globe. For example, according to the American Cancer Society, in 2021, there
will be an estimated 1.9 million new cancer cases diagnosed and 608,570 cancer
deaths in the United States.
In-situ hybridization is often used to identify certain genes or tumors.
It has been used for many years to diagnose cancer. It is often helpful to
identify the cause of cancer and its progress. It is an important technique for
genetic analysis, especially in research on prenatal development. The spatial
information obtained from in-situ
hybridization is useful for a number of research topics, including the
study of gene expression and the determination of disease risk. It is highly
sensitive and can identify mutations in samples.
In-situ hybridization technique
expands the potential to meet any medical need and enable a new diagnostic,
treatment application for those suffering from chronic diseases, such as
cancer. FISH helps analyze several targets in the same sample and helps to
detect a number of copies of the gene in the sample, the presence of a particular gene, and
mutation analysis. Whereas, CISH helps gain genetic information in the terms of
tissue morphology and is generally applicable in the case of molecular pathology
diagnostics.
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