Related Experiment Video
Updated: Jun 2, 2026
High-throughput Screening for Chemical Modulators of Post-transcriptionally Regulated Genes
Published on: March 3, 2015
High-throughput RNAi screening reveals novel regulators of telomerase
Maria Antonietta Cerone1, Darren J Burgess, Cristina Naceur-Lombardelli
1The Institute of Cancer Research, London, UK.
Abstract:
Telomerase is considered an attractive anticancer target on the basis of its common and specific activation in most human cancers. While direct telomerase inhibition is being explored as a therapeutic strategy, alternative strategies to target regulators of telomerase that could disrupt telomere maintenance and cancer cell proliferation are not yet available. Here, we report the findings of a high-throughput functional RNA interference screen to globally profile the contribution of kinases to telomerase activity (TA). This analysis identified a number of novel telomerase modulators, including ERK8 kinase, whose inhibition reduces TA and elicited characteristics of telomere dysfunction. Given that kinases represent attractive drug targets, we addressed the therapeutic implications of our findings, such as demonstrating how limiting TA via kinase blockade could sensitize cells to inhibition of the telomere-associated protein tankyrase. Taken together, our findings suggest novel combinatorial approaches to targeting telomere maintenance as a strategy for cancer therapy.
Insights
Researchers identified novel kinase regulators of telomerase activity (TA). Inhibiting ERK8 kinase reduced TA, suggesting new cancer therapy strategies targeting telomere maintenance.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Telomerase is a key target in cancer therapy due to its activation in most human cancers.
- Direct telomerase inhibition is a strategy, but targeting its regulators offers alternative therapeutic approaches.
- Disrupting telomere maintenance and cancer cell proliferation is crucial for effective cancer treatment.
Purpose of the Study:
- To identify novel kinase regulators of telomerase activity (TA) using a high-throughput functional RNA interference screen.
- To explore the therapeutic implications of targeting kinases that modulate telomerase.
- To investigate combinatorial strategies for cancer therapy by targeting telomere maintenance.
Main Methods:
- Conducted a high-throughput functional RNA interference screen to profile kinase contributions to telomerase activity.
- Identified novel telomerase modulators, including ERK8 kinase.
- Investigated the effects of kinase inhibition on telomerase activity and telomere dysfunction characteristics.
Main Results:
- Identified several novel kinases that regulate telomerase activity.
- ERK8 kinase was identified as a novel telomerase modulator; its inhibition reduced TA and induced telomere dysfunction.
- Kinase inhibition demonstrated the potential to sensitize cancer cells to tankyrase inhibition.
Conclusions:
- Kinase inhibition represents a viable strategy to limit telomerase activity and disrupt cancer cell proliferation.
- Targeting ERK8 kinase offers a novel approach to reduce telomerase activity.
- Findings suggest combinatorial therapies involving kinase blockade and tankyrase inhibition for cancer treatment.
More Related Videos
08:26Semi-quantitative Detection of RNA-dependent RNA Polymerase Activity of Human Telomerase Reverse Transcriptase Protein
Published on: June 12, 2018
11:32Identification of Transcription Factor Regulators using Medium-Throughput Screening of Arrayed Libraries and a Dual-Luciferase-Based Reporter
Published on: March 27, 2020
Related Concept Videos
02:41Telomeres and Telomerase
02:41Telomeres and Telomerase