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The concept of the tumor microenvironment (TME) dates back to 1863 when Rudolf Virchow established a connection between inflammation and cancer. However, it was not until 1889 that Stephen Paget's seed and soil theory introduced the important role of TME in cancer metastasis, highlighting the intricate relationship between tumors and their surrounding microenvironment.
Tumor fragments retain cell-cell interactions as well as some tissue architecture of the original tumor, therefore mimicking the tumor microenvironment. Alternatively, a single-cell suspension enables scientists to collect an unbiased sampling of the whole tumor, eliminating spatially segregate subclones that are otherwise inadvertently ...
The 2021 U.S. Preventive Services Task Force guidelines recommend annual screening for lung cancer with low-dose computed tomography in adults aged 50 to 80 years who have a 20 pack-year smoking history and currently smoke or have quit within the past 15 years. [6]
An application of this technique for early detection of lung cancer (Lung-CLiP) was originally described by Chabon et al. (2020) [2] from the labs of Ash Alizadeh and Max Diehn at Stanford. [3] [4] This method relies on several improvements to cancer personalized profiling by deep sequencing [5] for analysis of circulating tumor DNA (ctDNA ...
The tumor microenvironment, composed of stromal cells, immune cells and singaling molecules, supports invasion by creating good and favorable conditions for tumor cell migration. [20] For example, cancer- associated fibroblasts (CAFS) produce substances that remodel the ECM and promote cancer progression.
A circulating tumor cell (CTC) is a cancer cell from a primary tumor that has shed into the blood of the circulatory system, or the lymph of the lymphatic system. [1] CTCs are carried around the body to other organs where they may leave the circulation and become the seeds for the subsequent growth of secondary tumors .
The consequences of overdiagnosis and overtreatment resulting from cancer screening can lead to a decline in quality of life, due to the adverse effects of unnecessary medication and hospitalization. [10] [12] [13] The accuracy of a cancer screening test relies on its sensitivity, and low sensitivity screening tests can overlook cancers. [10]
Cancer treatments are a wide range of treatments available for the many different types of cancer, with each cancer type needing its own specific treatment. [2] Treatments can include surgery, chemotherapy, radiation therapy, hormonal therapy, targeted therapy including small-molecule drugs or monoclonal antibodies, [3] and PARP inhibitors such as olaparib. [4]
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