Tumor Suppressive Effects
Tumor Suppressive Effects - Related Videos
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...
08:34
The Measurement and Treatment of Suppression in Amblyopia
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Cited by 54 •
2012
Amblyopia is a developmental disorder of the visual cortex that is often accompanied by strong suppression of one eye. We present a new technique for measuring and treating interocular suppression in patients with amblyopia that can be deployed using virtual reality goggles or a portable iPod Touch device.
07:12
Bioluminescence-Based Tumor Quantification Method for Monitoring Tumor Progression and Treatment Effects in Mouse Lymphoma Models
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Cited by 29 •
2016
Bioluminescence imaging is a well-known tool for localizing tumors and metastases, but quantification of these images often requires complex calculations and particular instruments. We describe the easy-to-use luminoscore method, based on precise acquisition conditions, requiring no calculations, and enabling tumor burden and treatment response to be monitored in mouse models.
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.
07:49
Evaluation of Tumor-infiltrating Leukocyte Subsets in a Subcutaneous Tumor Model
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Cited by 15 •
2015
This protocol describes a method for the detailed evaluation of leukocyte subsets within the tumor microenvironment in a mouse tumor model. Chemerin-expressing B16 melanoma cells were implanted subcutaneously into syngeneic mice. Cells from the tumor microenvironment were then stained and analyzed by flow cytometry, allowing for detailed leukocyte subset analyses.
FAQs
These mechanisms create a coordinated sequence rather than a single barrier. Cell-cycle checkpoints can restrict progression, DNA-damage repair can address genomic instability, and senescence or apoptosis can limit compromised cells through different outcomes. Their combined activity links detection of cellular stress with reduced proliferation or survival, helping prevent damaged cells from advancing toward tumor formation.
Loss or inactivation of a tumor suppressor gene can remove control over one or more protective processes. Affected cells may continue proliferating despite cellular stress or genomic instability, avoid elimination, and accumulate changes that support tumor development. This explains why examining suppressor genes helps identify alterations that drive cancer rather than merely accompany abnormal growth.
Multiple safeguards matter because abnormal cells can be restricted at several stages. If a checkpoint does not stop proliferation, repair pathways may still address genomic damage; if damage persists, senescence or apoptosis may further limit the cell. This coordination provides overlapping protection and helps maintain tissue homeostasis even when individual controls are challenged.
The outcome depends on the type of cellular stress, the presence of genomic instability, and which protective pathways remain functional. A cell may be prevented from progressing through proliferation, have damage addressed, enter senescence, or undergo apoptosis. Considering these variables helps explain why altered cells do not all behave identically during tumor development.
Studies of tumor suppressive effects can connect a molecular alteration with a biological consequence. Researchers can ask whether a change affects checkpoint control, DNA-damage repair, senescence, or apoptosis, and then relate that effect to abnormal proliferation, survival, or tumor formation. This framework supports identification of cancer-driving alterations and clarifies how tumors evade normal regulation.
These effects provide a biological framework for interpreting cancer prevention, diagnosis, and treatment strategies. Prevention research can focus on maintaining normal regulatory activity; diagnostic work can investigate alterations in suppressor genes or their protein products; and treatment research can consider how tumors bypass protective mechanisms. The central outcome is a clearer link between molecular disruption and disease behavior.