Lewis Lung Carcinoma
Lewis Lung Carcinoma - Related Videos
02:33
Lewis Acids and Bases
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2020
In 1923, G. N. Lewis proposed a generalized definition of acid-base behavior in which acids and bases are identified by their ability to accept or to donate a pair of electrons and form a coordinate covalent bond. A coordinate covalent bond (or dative bond) occurs when one of the atoms in the bond provides both bonding electrons. For example, a coordinate covalent bond occurs when a water molecule combines with a hydrogen ion to form a hydronium ion. A coordinate covalent bond also results when...
02:36
Lewis Symbols and the Octet Rule
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2020
Chemical bonds are complex interactions between two or more atoms or ions, which reduce the potential energy of the molecule. Gilbert N. Lewis developed a model called the Lewis model that simplified the depiction of chemical bond formation and provided straightforward explanations for the chemical bonds seen in most common compounds. Lewis Model The Lewis model depicts chemical bond formation by the sharing or transfer of valence electrons, which helps to attain a stable electron...
02:46
Covalent Bonding and Lewis Structures
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2020
Compared to ionic bonds, which results from the transfer of electrons between metallic and nonmetallic atoms, covalent bonds result from the mutual attraction of atoms for a “shared” pair of electrons. Covalent bonds are formed between two atoms when both have similar tendencies to attract electrons to themselves (i.e., when both atoms have identical or fairly similar ionization energies and electron affinities). Physical Properties of Covalent Compounds Compounds that contain covalent...
09:00
Lewis Acid-Base Interaction in Ph3P-BH3
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2023
Source: Tamara M. Powers, Department of Chemistry, Texas A&M University One of the goals of chemistry is to use models that account for trends and provide insights into the properties of reactants that contribute to reactivity. Substances have been classified as acids and bases since the time of the ancient Greeks, but the definition of acids and bases has been modified and expanded over the years.1 The ancient Greeks would characterize substances by taste, and defined acids as those that...
04:45
3-Dimensional Culture of Lung Carcinoma Cells: A Method To Study Cell-Matrix Interactions
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2023
This video describes the technique of 3-D culture of lung carcinoma cells to study the cell-matrix interactions. In the protocol, we will perform the 3D culture of TUM622 lung carcinoma cells to explore its potential of forming organoids in vitro.
FAQs
Implanting Lewis lung carcinoma cells into C57BL/6 mice reduces genetic incompatibility between the tumor and host. This allows tumor progression in an immunocompetent setting, so researchers can examine tumor growth alongside immune interactions rather than studying cancer cells in isolation. The shared host background also supports controlled comparisons of tumor and host factors across experimental groups.
Subcutaneous implantation provides a practical approach for monitoring primary tumor development, whereas orthotopic implantation places the cells in a lung-related anatomical context. Comparing these routes helps investigators examine how the experimental setting influences tumor behavior, metastatic spread, and treatment response. The choice therefore depends on whether the study emphasizes accessible primary-tumor monitoring or lung-relevant disease progression.
Lewis Lung Carcinoma experiments can examine metastatic spread, tumor vascularization, and interactions between cancer cells and the host immune system. These features broaden analysis beyond local growth and help connect observable tumor progression with underlying biological mechanisms. Measuring several outcomes can clarify whether an intervention affects the primary tumor, dissemination, the tumor blood supply, or immune-related processes.
Researchers use controlled implantation into syngeneic C57BL/6 mice to compare experimental conditions while limiting genetic incompatibility as a confounding factor. Subcutaneous or orthotopic placement can be selected according to the biological question, and tumor progression can then be monitored across groups. This design links differences in tumor behavior or treatment response to the variables under investigation.
The model is useful when investigators need to assess responses to chemotherapy, immunotherapy, or targeted interventions in a tumor-bearing, immunocompetent host. Treatment studies can examine effects on primary tumor development, metastatic spread, vascularization, and immune interactions. These outcomes provide preclinical evidence for comparing interventions and for connecting molecular mechanisms with measurable therapeutic responses.
Lewis Lung Carcinoma helps bridge molecular studies and preclinical evaluation by combining a transplantable tumor with a controlled mouse-host system. Its use extends beyond measuring tumor growth alone, supporting investigations of metastasis, vascularization, immunity, and therapy response in solid-tumor research. Findings can inform experimental therapy design for lung cancer and other solid tumors.