Tumor Secreted Factors
Tumor Secreted Factors - Related Videos
09:03
Monitoring Functionality and Morphology of Vasculature Recruited by Factors Secreted by Fast-growing Tumor-generating Cells
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Cited by 7 •
2014
We describe a matrigel plug assay to illustrate angiogenic potential of a pool of factors secreted by cancer cells using two complementary imaging modalities, ultrasound and endomicroscopy. The matrigel, an extracellular matrix (ECM)-mimic gel, is utilized to introduce the host (mouse) with angiogenic factors secreted to the conditioned media...
11:33
Monitoring the Assembly of a Secreted Bacterial Virulence Factor Using Site-specific Crosslinking
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Cited by 2 •
2013
This article illustrates the use of pulse-chase radio labeling in combination with site-specific photocrosslinking to monitor interactions between a protein of interest and other factors in E. coli. Unlike traditional chemical cross-linking methods, this approach generates high resolution “snapshots” of an ordered assembly pathway in a living cell.
06:23
A Murine Orthotopic Bladder Tumor Model and Tumor Detection System
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Cited by 8 •
2017
This protocol describes the generation of murine orthotopic bladder tumors in female C57BL/6J mice and the monitoring of tumor growth.
02:43
Tumor Implantation and Injection of a Tumor Vaccine in a Mouse Model
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2025
This video demonstrates a cell-based tumor vaccination assay. A mouse, intradermally injected with B16-F10 melanoma cells for tumor formation, is vaccinated with B16-F10 cells secreting Flt3L cytokine near the developed tumor. The secreted Flt3L from the vaccine promotes the maturation and proliferation of dendritic cells that then present tumor antigens to T cells in lymph nodes, triggering a targeted anti-tumor immune response.
01:29
Anti-Tumor Effects of Engineered Pediococcus pentosaceus in a Mouse Tumor Model
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2026
Begin with immunodeficient mice bearing subcutaneous xenograft tumors derived from human colorectal cancer cells.Orally administer Pediococcus pentosaceus, a lactic acid bacterium safe for consumption and engineered to secrete an anticancer protein, to the treated mouse.Administer saline to the control mouse.Being acid-tolerant, the bacteria survive the acidic environment of the stomach and reach the intestine.There, they colonize the intestinal lumen and secrete the anticancer protein.The...
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Their effects depend on the target cell and the signaling route engaged. Cytokines, chemokines, and growth factors can bind receptors and change cellular activity, while proteases modify the surrounding matrix. Because these signals can act locally or at a distance, they connect malignant cells with stromal and immune cells and help organize a tumor-supportive microenvironment.
These factors can influence several processes at once. Signals that affect blood-vessel formation may help establish conditions that support tumor development, while changes in immune-cell activity can reduce effective tumor control. Protease activity and related matrix remodeling can alter the tissue surrounding malignant cells, supporting invasion and connecting local signaling with progression and possible metastatic spread.
Receptor signaling determines how a receiving cell interprets a factor released by a tumor. The response therefore depends not only on which molecule is present, but also on which neighboring, stromal, or immune cell carries the relevant receptor. Examining this signaling helps biologists trace communication pathways and explain why the same tumor can influence multiple cell populations.
Matrix remodeling changes the physical and biological environment around malignant cells. Proteases among tumor-secreted factors can modify surrounding matrix components, creating conditions associated with tissue invasion. In a biology study, linking protease activity with changes in the local matrix helps explain how tumor-host communication extends beyond direct cell-to-cell signaling and contributes to disease progression.
Researchers can measure these factors in conditioned media, tissues, or body fluids, with each source providing a different biological context. Conditioned media reflects material released by cells, whereas tissues and body fluids capture secretion patterns within more complex environments. Examining these sample types can connect detected factors with local effects or broader changes associated with tumor progression.
Their measurement in tissues or body fluids can reveal secretion patterns associated with tumor biology, making them candidates for biomarker discovery. The same information can expose communication pathways that sustain angiogenesis, immune evasion, invasion, or metastasis. Therapeutic research can then focus on disrupting tumor-host communication rather than addressing malignant cells in isolation.
Analyzing these molecules lets biologists examine how malignant cells influence stromal and immune cells, rather than viewing tumor growth as an isolated cancer-cell process. The resulting picture can connect secreted signals with changes in blood-vessel formation, immune activity, matrix structure, invasion, and metastasis, providing a framework for interpreting tumor progression in biological systems.