Metastasis Promotion
Metastasis Promotion - Related Videos
08:28
Experimental Metastasis Assay
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Cited by 28 •
2010
This article describes the procedures of an experimental metastasis assay that is used to determine the metastatic potential of human cancer cell lines.
11:43
Advanced Animal Model of Colorectal Metastasis in Liver: Imaging Techniques and Properties of Metastatic Clones
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Cited by 6 •
2016
The ability of metastatic clones to colonize distant sites depends on their proliferation capacity and/or their ability to survive in the host microenvironment without significant proliferation. Here, we present an animal model that allows quantitative visualization of both types of liver colonization by metastatic clones.
08:49
Models of Bone Metastasis
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Cited by 115 •
2012
Animal models are frequently utilized to study cancer metastasis to bone. In this protocol we will describe two common methods of tumor inoculation for bone metastasis studies and briefly describe some of the analyses utilized to monitor and quantify these models.
02:40
The Eukaryotic Promoter Region
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2020
The eukaryotic promoter region is a segment of DNA located upstream of a gene. It contains an RNA polymerase binding site, a transcription start site, and several cis-regulatory sequences. The proximal promoter region is located in the vicinity of the gene and has cis-regulatory sequences and the core promoter. The core promoter is the binding site for RNA polymerase and is usually located between -35 and +35 nucleotides from the transcription start site. The distal promoter regions are...
02:30
Metastasis
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2021
Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body. Epithelial-to-Mesenchymal Transition The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
FAQs
Metastasis promotion depends on coordinated changes in both cancer cells and their surroundings. Tumor cells gain motility and invasive behavior, while alterations in the surrounding extracellular matrix can help them move through local tissue barriers. Examining these processes together clarifies how cells leave a primary tumor and identifies biological steps that may be interrupted before dissemination progresses.
Stromal and immune signals can make a distant tissue more supportive of arriving cancer cells. This supportive environment, called a metastatic niche, influences whether disseminated cells can persist and drive secondary tumor growth. Studying these signals broadens metastasis research beyond tumor-cell behavior and highlights how interactions with surrounding tissues affect colonization.
Entry into blood or lymphatic vessels is only one stage of dissemination. Cancer cells must also survive transport and later exit into a receptive organ. Considering these linked transitions helps researchers distinguish local invasion from successful distant spread, because cells that enter a vessel may still fail to remain viable or establish growth at a secondary site.
Distant spread includes more than movement away from the primary tumor. Cells must disseminate, reach another tissue, and then support secondary tumor growth. Separating these stages helps explain why some biological changes favor invasion whereas others influence establishment in a receptive organ. This distinction also supports research into therapies that interrupt dissemination or colonization specifically.
Experimental models provide a way to examine the biological sequence associated with metastatic progression, including invasive behavior, vessel entry, transport survival, exit into distant tissues, and secondary growth. Their value lies in connecting individual mechanisms with overall outcomes. Such models can therefore support evaluation of how tumor, stromal, immune, and tissue factors contribute to metastatic development.
Mechanistic studies can reveal biological features associated with tumor progression, dissemination, or establishment in distant tissues, helping inform biomarker development. The same knowledge can guide therapies designed to interrupt cancer-cell dissemination or colonization. This research is clinically relevant because metastatic disease contributes substantially to cancer mortality and can involve resistance to treatment.