Related Experiment Video
Updated: Jan 24, 2026
09:11
Y-90 Radioembolization and PD-1 Inhibitor as Neoadjuvant Treatment in Hepatocellular Carcinoma
Published on: May 24, 2024
1.1K
Overview: PAI-1 inhibitors and clinical applications
1Graduate School of Medicine, Tohoku University, Miyagi, Japan.
Biomedical Journal
|May 22, 2025
Summary
Researchers developed small molecule inhibitors for plasminogen activator inhibitor-1 (PAI-1), a protein linked to various diseases. A promising clinical candidate, TM5509, emerged from extensive screening, paving the way for potential anti-cancer and anti-aging therapies.
Area of Science:
- Biochemistry
- Pharmacology
- Drug Discovery
Background:
- Plasminogen activator inhibitor-1 (PAI-1) is a key regulator of the fibrinolytic system.
- PAI-1 is implicated in diverse pathological conditions, including fibrosis and inflammation.
- Developing targeted inhibitors for PAI-1 holds therapeutic potential.
Purpose of the Study:
- To design and identify novel small molecule inhibitors of human PAI-1.
- To advance a lead compound into a clinical candidate for therapeutic applications.
- To explore new clinical applications for PAI-1 inhibitors beyond traditional targets.
Main Methods:
- Structure-based drug design utilizing X-ray crystallography of human PAI-1.
- In silico screening of a large virtual chemical library.
- Synthesis and evaluation of over 1400 PAI-1 inhibitor derivatives.
- Pre-clinical studies to assess efficacy and therapeutic potential.
Main Results:
- Identification of a potent clinical candidate, TM5509, from a series of PAI-1 inhibitors.
- Demonstration of PAI-1 inhibitors' potential in pre-clinical models.
- Conception of novel therapeutic strategies targeting cancer and aging.
Conclusions:
- Small molecule inhibition of PAI-1 is a viable therapeutic strategy.
- TM5509 represents a promising clinical candidate for PAI-1 related pathologies.
- PAI-1 inhibitors offer potential for innovative treatments in oncology and gerontology, supported by ongoing clinical trials.
Related Concept Videos
01:11Clinical Trials: Overview
4.7K
Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
4.7K
01:11Applications of IR Spectroscopy: Overview
2.2K
The non-destructive nature and ability to provide valuable chemical information make IR spectroscopy a versatile technique with broad applications in various scientific and industrial fields. IR spectroscopy is commonly used to identify and characterize organic and inorganic compounds. It provides information about the functional groups present in a molecule and the bonding between atoms. This helps in the structural elucidation of compounds during organic synthesis, pharmaceutical research,...
2.2K
01:19Clinical Applications of Epidermal Stem Cells
3.3K
Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own...
3.3K
01:07Preparation of 1° Amines: Hofmann and Curtius Rearrangement Overview
3.6K
In the presence of an aqueous base and a halogen, primary amides can lose the carbonyl (as carbon dioxide) and undergo rearrangement to form primary amines. This reaction, called the Hofmann rearrangement, can produce primary amines (aryl and alkyl) in high yields without contamination by secondary and tertiary amines.
3.6K
01:52Eukaryotic Transcription Inhibitors
10.9K
Certain biochemical processes, such as embryonic development and cell growth regulation, depend on the repression of specific genes. DNA binding proteins known as eukaryotic transcription inhibitors regulate the repression of gene expression in eukaryotes. The presence of these inhibitors at the required location and time in the cell is triggered by the presence of hormones and additional signals from other cells.
Eukaryotic transcription inhibitors usually contain two distinct domains, a...
Eukaryotic transcription inhibitors usually contain two distinct domains, a...
10.9K
01:11Local Anesthetics: Clinical Application as Spinal Anesthesia
1.4K
Spinal anesthetics are given during lower abdomen and limb surgeries to block sensory and motor neurons. They are administered in the mid to low lumbar regions, primarily acting on the cauda equina's nerve roots. The blockade level depends on the local anesthetic (LA) concentration. Usually, low LA concentrations are sufficient to block sensory fibers, while only high LA concentrations block motor fibers. Other factors like injection volume and speed, the patient's posture, and the drug...
1.4K