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Updated: Jun 10, 2026

Visualization of Inflammatory Caspases Induced Proximity in Human Monocyte-Derived Macrophages
Published on: April 6, 2022
IAPs: from caspase inhibitors to modulators of NF-kappaB, inflammation and cancer
Mads Gyrd-Hansen1, Pascal Meier
1Biotech Research and Innovation Centre, University of Copenhagen, Ole Maaløes Vej 5, Copenhagen DK2200, Denmark. mads.gyrd@bric.ku.dk
Abstract:
The realization that alterations in inhibitor of apoptosis (IAP) proteins are found in many types of human cancer and are associated with chemoresistance, disease progression and poor prognosis, has sparked a worldwide frenzy in the development of small pharmacological inhibitors of IAPs. The development of such inhibitors has radically changed our knowledge of the signalling processes that are regulated by IAPs. Recent studies indicate that IAPs not only regulate caspases and apoptosis, but also modulate inflammatory signalling and immunity, mitogenic kinase signalling, proliferation and mitosis, as well as cell invasion and metastasis.
Insights
Small molecule inhibitors targeting inhibitor of apoptosis (IAP) proteins are crucial in cancer therapy. These inhibitors are reshaping our understanding of IAP
Area of Science:
- Molecular Biology
- Cancer Research
- Pharmacology
Background:
- Alterations in inhibitor of apoptosis (IAP) proteins are prevalent in human cancers.
- IAP dysregulation correlates with chemoresistance, disease progression, and poor prognosis.
- There is a global focus on developing small molecule inhibitors of IAPs.
Purpose of the Study:
- To explore the multifaceted roles of IAP proteins beyond apoptosis.
- To highlight the impact of IAP inhibitors on understanding IAP-regulated signaling.
- To summarize recent findings on IAP functions in inflammation, immunity, and cell dynamics.
Main Methods:
- Review of recent scientific literature on inhibitor of apoptosis proteins (IAPs).
- Analysis of studies investigating the pharmacological inhibition of IAPs.
- Synthesis of data on IAP roles in various cellular processes.
Main Results:
- IAP inhibitors have significantly advanced the understanding of IAP functions.
- IAPs regulate not only caspases and apoptosis but also inflammatory and immune responses.
- IAPs are involved in mitogenic kinase signaling, proliferation, mitosis, cell invasion, and metastasis.
Conclusions:
- Inhibitor of apoptosis proteins (IAPs) are critical regulators with diverse cellular functions.
- Targeting IAPs with small molecule inhibitors offers promising therapeutic strategies.
- Further research into IAP modulation is essential for advancing cancer treatment.
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