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Updated: Aug 23, 2025
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Techniques to Induce and Quantify Cellular Senescence
Published on: May 1, 2017
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Long-Term IGF1 Stimulation Leads to Cellular Senescence via Functional Interaction with the Thioredoxin-Interacting
Karthik Nagaraj1, Rive Sarfstein1, Zvi Laron2
1Department of Human Molecular Genetics and Biochemistry, Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel.
Cells
|October 27, 2022
Summary
The insulin-like growth factor-1 (IGF1) pathway impacts aging and cancer risk. This study reveals IGF1 and thioredoxin-interacting protein (TXNIP) influence cell fate and premature aging, offering insights into IGF1-related diseases.
Area of Science:
- Endocrinology
- Cell Biology
- Aging Research
Background:
- The growth hormone (GH)-insulin-like growth factor-1 (IGF1) pathway regulates metabolism, growth, and aging.
- Reduced GH/IGF1 activity may extend lifespan.
- Laron syndrome (LS) patients with IGF1 deficiency show reduced cancer risk.
Purpose of the Study:
- Investigate the role of the IGF1-TXNIP axis in cellular homeostasis and stress response.
- Explore the link between IGF1, TXNIP, and premature senescence.
- Elucidate the signaling pathways involved in IGF1/TXNIP-induced senescence.
Main Methods:
- Analysis of LS-derived lymphoblastoid cells.
- Investigating TXNIP expression and function under stress.
- Inducing premature senescence with IGF1 treatment.
- Examining STAT3/IL-1A signaling in senescence.
Main Results:
- TXNIP is crucial for cell fate decisions under stress.
- Prolonged IGF1 treatment induces premature senescence with a distinct network signature.
- Combined IGF1/TXNIP-induced senescence involves STAT3/IL-1A signaling and inflammation.
Conclusions:
- The IGF1-TXNIP axis is essential for maintaining cellular homeostasis.
- IGF1 can induce premature senescence, potentially contributing to reduced cancer risk in LS.
- Mechanistic insights into IGF1-TXNIP interactions may inform clinical understanding of related pathologies.
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