
Chemotherapy acts on rapidly dividing cells
As stated in previous posts, I have not been enthusiastic about the use of chemotherapy against cancer. Too much damage is done to other tissues and the patient may die from the treatment. That opinion may be about to change due to a report from researchers based in Sydney, Australia.
According to the report, non-reproducing bacterial cells can be produced and modified to target receptors specific to cancer cells. Different types of cancer have different types of receptors, so the bacterial cells must be specific for a given type of cancer.
These bacterial cells, not actually alive as they have no chromosomes, are known as minicells and can be “loaded” with various chemicals. Minicells are about 1/5 the size of normal cells and are capable of transporting highly toxic substances.
In a first round of treatment, minicells are infused with materials which reduce cancer cells’ resistance to chemo drugs. Injected into the body, these cells seek out the cancer cells and pretreat them. This step can be repeated as many times as necessary.
A second “wave” of minicells are infused with chemo drugs. When one of these minicells reaches a cancer cell, it attaches to the receptors on that cell and releases the toxin into the cell, causing the cancer cell to die.
As the mini-cells only attach to the cancer cells, the rest of the body is essentially unaffected. This means no damage is done to other tissues and the side effects experienced with systemic chemotherapy administration methods are absent.
By only delivering the chemo drugs to where they are needed, this delivery method reduces the amount of chemo needed, lowering the cost and the need for hospitalization in many cases.
Developed by EnGeneIC and applied to mice and dogs so far, human trials will be started shortly. If all goes well, this will be a huge and exciting advance in the fight against cancer.











