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Chemotherapy can boost tumor immunity in two main ways: (a) by killing cancer cells through immunogenic cell death, and (b) by affecting both cancerous and normal cells in the tumor environment. Despite this, many chemotherapy treatments can also suppress the immune system by causing lymphopenia or impairing lymphocyte function.
For example, assuming a 99% kill per cycle of chemotherapy, a tumor of 10 11 cells would be reduced to less than one cell with six treatment cycles: 10 11 * 0.01 6 < 1. [3] However, the tumor can also re-grow during the intervals between treatments, limiting the net reduction of each fractional kill. [4]
Cancer cells can also cause defects in the cellular pathways of apoptosis (programmed cell death). As most chemotherapy drugs kill cancer cells in this manner, defective apoptosis allows survival of these cells, making them resistant. Many chemotherapy drugs also cause DNA damage, which can be repaired by enzymes in the cell that carry out DNA ...
A chemotherapy regimen is a regimen for chemotherapy, defining the drugs to be used, their dosage, the frequency and duration of treatments, and other considerations. In modern oncology, many regimens combine several chemotherapy drugs in combination chemotherapy. The majority of drugs used in cancer chemotherapy are cytostatic, many via ...
GTFC is designed to specifically target cancer cells with genetic mutations, he said, so that more chemo gets into the tumor. "While only 5% to 7% of conventional chemotherapy administered through ...
Metronomic therapy is a new type of chemotherapy in which anti-cancer drugs are administered in a lower dose than the maximum tolerated dose repetitively over a long period to treat cancers with fewer side effects. Metronomic therapy is shown to affect both tumor microenvironment and tumor cells to achieve its therapeutic effects. [1]
Chemotherapy kills cancer cells which can help prevent the disease returning. There are many types of chemotherapy drugs and patients can take the treatment as tablets at home, with regular check ...
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. [1] Treatments can include surgery, chemotherapy, radiation therapy, hormonal therapy, targeted therapy including small-molecule drugs or monoclonal antibodies, [2] and PARP inhibitors such as olaparib. [3]