But the telomerase gene is suppressed in most normal cells, and as people age, their telomeres decrease.
And because most normal cells in the body do not produce telomerase, such a drug would have little effect on healthy cells.
Here, we identified calreticulin as a pro-phagocytic signal that was highly expressed on the surface of several human cancers, but was minimally expressed on most normal cells.
The answer is thought to be the presence of an enzyme known as telomerase, which, for reasons that no one quite knows, is present in cancer cells but not in most normal cells.
Enzyme activity is undetectable in most normal cells and tissues, but present in immortal cells and cancer tissues.
Most normal cells in the human body contain 46 chromosomes, or bundles of genetic code.
The premise is that most cancer cells are DDR-dysfunctional, of higher rate metabolism and faster proliferation than most normal cells, with their S phase particularly vulnerable to DNA insults (Pulukuri et al., 2009).
Most normal cells in vivo will become senescent through out the life time of an individual.
With the exception of cells from hematopoietic and lymphoid lineages, most normal cells rely on physical attachment to the extracellular matrix in order to manifest normal cell growth.
Inhibition of ILK kinase activity has significant effects on cell survival and proliferation in cancer cells relative to most normal cells [5], suggesting that, although ILK kinase activity may be silenced in most normal cells, it becomes activated in cancer cells where it is required for cell survival and proliferation.
It has been established that the stable repression of the telomerase catalytic subunit, encoded by the telomerase reverse transcriptase (hTERT) gene, is a predominant event resulting in the lack of telomerase activity in most normal cells [22] [26].
