Brefeldin A (BFA) is a powerful fungal metabolite that has become an indispensable tool in modern cell biology and cancer research. With the CAS registry number 20350-15-6, this macrocyclic lactone is produced by the fungus Penicillium brefeldianum and has captured the attention of researchers worldwide for its unique ability to interfere with fundamental cellular processes.

Originally discovered in the 1950s, Brefeldin A was initially investigated as a potential antibiotic. However, researchers soon realized that its true value lay not in clinical applications, but as a powerful research tool for understanding cellular protein transport mechanisms. Today, it is widely used in laboratories around the world to study intracellular trafficking, apoptosis, and various disease mechanisms.

What is Brefeldin A?

Brefeldin A is a macrocyclic lactone with the molecular formula C16H24O4 and a molecular weight of 280.36 g/mol. This white to off-white crystalline powder is produced by the fungus Penicillium brefeldianum and is known by various alternative names including BFA, Ascotoxin, Cyanein, Decumbin, and Nectrolide.

With a purity typically ≥98%, Brefeldin A is soluble in ethanol, DMSO, and methanol, making it suitable for various laboratory applications in cell biology research.

Propiedades químicas

Número CAS	20350-15-6
Fórmula molecular	C16H24O4
Peso molecular	280.36 g/mol
Apariencia	Polvo cristalino entre blanco y blanquecino
Pureza	≥98%
Solubilidad	Ethanol, DMSO, Methanol
Alternative Names	BFA, Ascotoxin, Cyanein, Decumbin, Nectrolide

Mechanism of Action: How Brefeldin A Works

The primary mechanism of Brefeldin A centers on its ability to inhibit protein transport from the endoplasmic reticulum (ER) to the Golgi apparatus. This action occurs through several key pathways:

1. Inhibition of ADP-Ribosylation Factor (ARF)

Brefeldin A works by inhibiting ADP-ribosylation factor (ARF) GTPases, which are essential for recruiting coat proteins to cellular membranes. These coat proteins (specifically COPI) are necessary for forming transport vesicles that carry proteins from the ER to the Golgi.

2. Disruption of Golgi Structure

When cells are treated with Brefeldin A, the Golgi apparatus rapidly disassembles and merges with the endoplasmic reticulum. This dramatic structural change provides researchers with a visual indicator of the compounds activity and allows for detailed studies of cellular organization.

3. Induction of Endoplasmic Reticulum Stress

By preventing protein transport, Brefeldin A causes proteins to accumulate in the ER, leading to ER stress. This stress triggers the unfolded protein response (UPR), which can ultimately lead to apoptosis (programmed cell death).

Key Applications and Uses

1. Cell Biology Research

Brefeldin A is primarily used as a research tool in cell biology:

• Protein Transport Studies: Researchers use BFA to understand how proteins move within cells
• Golgi Function Analysis: The compound helps scientists study Golgi apparatus structure and function
• Vesicle Trafficking Research: BFA provides insights into how vesicles form and transport cellular cargo

2. Cancer Research and Therapy

One of the most promising applications of Brefeldin A is in cancer research:

• Apoptosis Induction: BFA induces apoptosis (cell death) in various cancer cell lines
• p53-Independent Action: Unlike many chemotherapeutic agents, BFA can induce apoptosis independently of p53 status, making it potentially useful for treating p53-mutant tumors
• Synergistic Effects: Studies show BFA can enhance the effects of other chemotherapy agents

3. Antiviral Research

Research has demonstrated that Brefeldin A exhibits antiviral properties:

• The compound can inhibit replication of various viruses
• It interferes with viral protein processing and transport
• BFA is used in antiviral drug development research

4. Immunology Studies

In immunological research, Brefeldin A is used to:

• Study cytokine secretion pathways
• Analyze immune cell function
• Investigate antigen presentation mechanisms

5. CRISPR/Cas9 Activation

Recent research has revealed that Brefeldin A can serve as a CRISPR/Cas9 activator, enhancing the efficiency of gene editing experiments.

Research Findings and Clinical Potential

Anticancer Activity

Multiple studies have demonstrated Brefeldin As potential anticancer properties:

• Prostate Cancer: BFA inhibits cell growth by targeting the cell cycle in prostate cancer cells
• Neuroendocrine Tumors: Research shows BFA induces apoptosis through caspase-3 activation
• Various Cancer Lines: Studies demonstrate cytotoxicity against multiple cancer cell lines

ER Stress and Apoptosis

The relationship between BFA-induced ER stress and apoptosis has been extensively studied:

• Protein accumulation in the ER triggers the unfolded protein response
• Prolonged ER stress leads to apoptotic cell death
• Mitochondrial pathways are involved in BFA-induced apoptosis

Seguridad y manipulación

Important Note: Brefeldin A is sold exclusively for research and laboratory purposes. It is not intended for diagnostic, therapeutic, or clinical applications in humans or animals.

Precauciones de seguridad

When handling Brefeldin A in a research setting:

• Use appropriate personal protective equipment (PPE)
• Work in a fume hood or biosafety cabinet
• Follow institutional safety guidelines
• Store according to manufacturer recommendations

Almacenamiento

• Store at -20°C or below
• Protect from light
• Keep container tightly sealed

Why Choose Our Brefeldin A?

• High Purity: Our Brefeldin A meets or exceeds research grade specifications (≥98%)
• Quality Tested: Each batch is quality tested for purity and biological activity
• Reliable Supply: Consistent availability for ongoing research needs
• Technical Support: Our team of scientists is available to answer your questions
• Competitive Pricing: Factory-direct pricing for research institutions

We serve pharmaceutical companies, contract manufacturers, and research institutions worldwide with premium chemical products and dedicated customer support.

Frequently Asked Questions

What is the primary use of Brefeldin A?

The primary use of Brefeldin A is as a research tool in cell biology to study protein transport mechanisms. It is used extensively in laboratories to understand how proteins move within cells and to study cellular processes like apoptosis.

How does Brefeldin A induce apoptosis?

Brefeldin A induces apoptosis by causing endoplasmic reticulum stress through the inhibition of protein transport. This leads to the accumulation of misfolded proteins, triggering the unfolded protein response and ultimately cell death.

Is Brefeldin A safe for human use?

No. Brefeldin A is research-grade only and not approved for human or animal therapeutic use. It is a potent compound that can cause significant cellular effects and should only be used by trained researchers in appropriate laboratory settings.

What concentration of Brefeldin A is typically used?

In cell culture experiments, typical working concentrations range from 0.1 to 10 μg/mL, depending on the specific application and cell type. Researchers should optimize conditions for their specific experiments.

Does Brefeldin A work on all cell types?

The effects of Brefeldin A can vary between different cell types. Some cells are more sensitive to BFA-induced apoptosis than others, and the response can depend on factors like p53 status and cellular stress response pathways.

Disclaimer: This article is for informational purposes only and is intended for research and educational use. Brefeldin A is not for human or animal diagnostic or therapeutic use.