Beginning at the ends: telomeres and human disease

Area of Science:

• Genetics
• Molecular Biology
• Human Disease

Background:

• Telomeres are crucial for chromosomal integrity and their dysfunction causes various human diseases.
• Telomere biology disorders (TBDs) are a spectrum of conditions linked to rare genetic variants affecting telomere maintenance.
• Dyskeratosis congenita (DC) represents a severe TBD with characteristic symptoms and high risks of bone marrow failure and cancer.

Purpose of the Study:

• To review recent advancements in understanding telomere biology's role in both rare and common human diseases.
• To highlight the connection between telomere length, genetic variants, and conditions such as cancer, heart disease, and mental health disorders.
• To emphasize the need for interdisciplinary collaboration to translate telomere research into improved health outcomes.

Main Methods:

• Review of studies on rare telomere biology disorders.
• Analysis of large-scale molecular epidemiology studies on common diseases.
• Synthesis of findings from clinical, basic science, and epidemiological research.

Main Results:

• TBDs present a spectrum from severe childhood-onset DC to milder adult-onset conditions like pulmonary fibrosis or bone marrow failure.
• Common diseases including cancer, heart disease, and mental health conditions are associated with telomere length and common genetic variants in telomere biology genes.
• Significant progress has been made in understanding telomere's role in human pathology.

Conclusions:

• Telomere biology is integral to a wide range of human diseases, from rare genetic disorders to common complex illnesses.
• Understanding telomere dysfunction offers insights into disease mechanisms and potential therapeutic targets.
• Multidisciplinary collaboration is vital for advancing telomere research and its clinical applications.