Related Experiment Video
Updated: Jan 10, 2026
07:59
Measurement of Basal and Forskolin-stimulated Lipolysis in Inguinal Adipose Fat Pads
Published on: July 21, 2017
10.0K
Burning fat with cysteine depletion.
Brittney Adams1, Stanislaw Walkowiak1, Mohammed K Hankir1
1School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.
Cell Stress
|November 24, 2025
Summary
Dietary essential amino acid restriction aids weight loss. Cysteine depletion in mice triggers a liver stress response, enhancing metabolic benefits and offering a potential obesity treatment.
Area of Science:
- Metabolic research
- Nutritional science
- Obesity research
Background:
- Dietary essential amino acid restriction is a known method for inducing weight loss in rodents.
- This weight loss is mediated by alterations in food intake and energy expenditure.
Purpose of the Study:
- To investigate the specific mechanisms by which cysteine depletion impacts metabolic outcomes.
- To explore the potential of targeting cysteine metabolism for obesity treatment.
Main Methods:
- Utilized a combination of dietary manipulation and genetic engineering to achieve cysteine depletion in mice.
- Analyzed the resulting physiological and molecular responses, particularly focusing on the liver.
Main Results:
- Cysteine depletion induced a distinct hepatic stress response.
- This stress response was found to amplify the weight loss effects observed from amino acid restriction.
- Identified specific pathways through which cysteine depletion influences energy metabolism.
Conclusions:
- Cysteine depletion in mice activates a unique liver stress response that enhances metabolic benefits.
- This finding suggests a novel therapeutic strategy for managing obesity by targeting cysteine metabolism.
Keywords:
adipose tissue thermogenesiscysteineessential amino acidsintegrated stress responseobesityoxidative stress responseMore Related Videos
07:46Isolation, Characterization, and Purification of Macrophages from Tissues Affected by Obesity-related Inflammation
Published on: April 3, 2017
25.9K
07:03Author Spotlight: Establishing MASLD Cell Models for Investigating Disease Mechanisms and the Lipid-Lowering Effects of Koumiss
Published on: July 19, 2024
1.6K
Related Concept Videos
01:24Muscle Recovery and Fatigue
3.9K
Muscle fatigue refers to the decline in a muscle's ability to maintain the force of contraction after prolonged activity. It primarily stems from changes within muscle fibers. Even before experiencing muscle fatigue, one may feel tired and have the urge to stop the activity. This response, known as central fatigue, occurs due to changes in the central nervous system, namely the brain and spinal cord. While there is no single mechanism that induces fatigue, it may serve as a protective...
3.9K
01:25Lipid Catabolism
826
Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...
826
01:24Metabolic States of the Body: Fasting and Starvation
2.7K
During the initial hours of fasting, the body uses up its glycogen stores as an energy source. Once these glycogen reserves are depleted, the body begins breaking down stored triglycerides and structural proteins. During this stage, glycerol becomes a key substrate for gluconeogenesis, while free fatty acids undergo beta-oxidation to provide energy for tissues, such as skeletal muscle. In the fasting state, the body spares protein breakdown as much as possible to conserve muscle and structural...
2.7K
01:18Amino Acid Catabolism
954
Microorganisms rely on proteins as an essential carbon and energy source, particularly in environments with limited polysaccharides or lipids. However, proteins are too large to cross the plasma membrane unaided, necessitating enzymatic degradation. Microbes secrete extracellular proteases and peptidases that hydrolyze proteins into peptides, which can then be transported across the membrane. Once inside the cell, intracellular proteases degrade these peptides into free amino acids, which...
954
01:24Overview of Lipid Metabolism
4.7K
Lipid metabolism is a crucial process in the human body that involves the synthesis and degradation of lipids. This process is essential for energy production, cell membrane formation, and hormone production, among other functions.
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
4.7K
01:29Cholesterol: Significance and Regulation
1.2K
Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
Considering cholesterol and...
Considering cholesterol and...
1.2K