Telomerase Reactivation
Telomerase Reactivation - Related Videos
02:41
Telomeres and Telomerase
0 Views •
2020
In eukaryotic DNA replication, a single-stranded DNA fragment remains at the end of a chromosome after the removal of the final primer. This section of DNA cannot be replicated in the same manner as the rest of the strand because there is no 3’ end to which the newly synthesized DNA can attach. This non-replicated fragment results in gradual loss of the chromosomal DNA during each cell duplication. Additionally, it can induce a DNA damage response by enzymes that recognize single-stranded DNA.
02:41
Telomeres and Telomerase
0 Views •
2023
In eukaryotic DNA replication, a single-stranded DNA fragment remains at the end of a chromosome after the removal of the final primer. This section of DNA cannot be replicated in the same manner as the rest of the strand because there is no 3’ end to which the newly synthesized DNA can attach. This non-replicated fragment results in gradual loss of the chromosomal DNA during each cell duplication. Additionally, it can induce a DNA damage response by enzymes that recognize single-stranded DNA.
09:25
In vitro Reconstitution of the Active T. castaneum Telomerase
0 Views •
Cited by 5 •
2011
Efforts to isolate the catalytic subunit of telomerase, TERT, in sufficient quantities for structural studies, have been met with limited success for more than a decade. Here, we present methods for the isolation of the recombinant Tribolium castaneum TERT (TcTERT) and the reconstitution of the active T. castaneum telomerase ribonucleoprotein (RNP) complex in vitro.
12:08
Telomere Length and Telomerase Activity; A Yin and Yang of Cell Senescence
0 Views •
Cited by 29 •
2013
An accurate, short, sophisticated and cheap method is described that assesses telomere length in multiple tissues and species using qRT-PCR. In addition, we will describe a simple assay to assess telomerase activity as a complementary backbone test for telomere length.
10:14
Telomerase Activity in the Various Regions of Mouse Brain: Non-Radioactive Telomerase Repeat Amplification Protocol (TRAP) Assay
0 Views •
Cited by 8 •
2014
Telomerase is expressed in the neonatal brain and also in distinct regions of the adult brain. We present a non-toxic time saving TRAP assay for the analysis of telomerase activity in various regions of the mouse brain and detection of differences in telomerase activity between male and female mouse brains.
FAQs
Two functional components are central: the telomerase RNA supplies the sequence template, while TERT provides the reverse transcriptase activity that incorporates repetitive DNA at chromosome ends. Their division of roles explains how reactivation can support telomere maintenance. In medical research, this mechanism guides evaluation of whether chromosome-end preservation is occurring.
As telomeres shorten, cells may lose replicative capacity, meaning they can no longer continue dividing normally. Critically short telomeres are also associated in this context with compromised chromosome stability. Reactivation is therefore studied not simply to increase cell division, but to preserve chromosome ends where telomere loss contributes to disease or restricted tissue renewal.
Telomerase reactivation has opposite implications depending on context. In a therapeutic setting, maintaining telomeres could help cells affected by critically short telomeres or limited renewal. In many cancers, however, reactivation supports unlimited proliferation. This contrast makes telomerase a dual-purpose pathway: a possible treatment mechanism in some disorders and a safety concern requiring careful consideration.
Researchers would look for evidence that telomere maintenance translates into biologically relevant outcomes, especially preserved chromosome stability and an extended replicative lifespan. The medical objective is not merely detectable enzyme activity. A useful intervention would need to address cellular limitations associated with critically short telomeres or poor tissue renewal, while remaining compatible with cancer-related safety considerations.
Telomerase reactivation is being studied for disorders linked to critically short telomeres because restoring maintenance could help affected cells preserve chromosome ends. It is also investigated in regenerative contexts involving tissues with limited renewal capacity. These are distinct application areas: the first centers on telomere-associated disease, whereas the second focuses on supporting cellular renewal where tissue replacement is constrained.
Medical use requires weighing potential benefits against the possibility of enabling harmful cell expansion. The same telomere-maintenance pathway that may preserve chromosome stability can be reactivated by many cancers to sustain unlimited proliferation. Consequently, telomerase-based interventions are studied both as candidate strategies for telomere disorders and regenerative medicine and as pathways that may need therapeutic inhibition in cancer.