Adipocyte Lipolysis
Adipocyte Lipolysis - Related Videos
07:59
Measurement of Basal and Forskolin-stimulated Lipolysis in Inguinal Adipose Fat Pads
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Cited by 10 •
2017
This protocol describes the method of determining basal and forskolin-stimulated lipolysis in inguinal fat pads obtained from normal chow diet (NCD) or high fat diet (HFD) ± capsaicin fed wild type mice. As an index for lipolysis, glycerol release was measured from inguinal adipose fat pads.
08:34
Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis
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Cited by 5 •
2016
Adipose tissue (AT) can influence whole body homeostasis, therefore understanding the molecular mechanisms of adipocyte differentiation and function is of importance. We provide a protocol for gaining new insights into these processes by analyzing adipocyte homeostasis, differentiation and hypoxia exposure as a model for induced adipocyte apoptosis.
03:03
In Vitro Mouse Bone Marrow Stromal Cell Differentiation into Adipocytes
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2025
This video demonstrates the differentiation of bone marrow stromal cells (BMSCs) into adipocytes. In the two-step process, in the presence of specific growth factors and hormones, undifferentiated BMSCs first differentiate into preadipocytes. The second step involving treatment with glucose and insulin leads to the formation of mature adipocytes with multiple lipid droplets.
07:35
Generation of Human Adipose Stem Cells through Dedifferentiation of Mature Adipocytes in Ceiling Cultures
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Cited by 16 •
2015
Mature adipocytes may represent an abundant source of stem cells through dedifferentiation, which leads to a homogenous population of fibroblast-like cells. Collagenase digestion is used to isolate mature adipocytes from human fat. The goal of our protocol is to obtain multipotent, dedifferentiated fat cells from human mature adipocytes.
10:40
Characterization of Adipocyte-Derived Extracellular Vesicle Secretion Using a CD63-GFP Reporter Mouse Model In Vivo and In Vitro
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2025
The protocol uses an adipocyte-specific CD63-GFP reporter mouse line to visualize and quantify the secretion of adipocyte-derived extracellular vesicles (EVs) and demonstrate their uptake by progenitor cells, revealing a paracrine pathway within adipose tissue.
FAQs
Catecholamines stimulate a signaling chain in adipocytes that raises cyclic AMP and activates protein kinase A. This kinase pathway provides the regulatory link between an external stress or energy-demand signal and the lipases acting on stored fat. Its importance is that lipolysis responds to changing physiological conditions rather than proceeding at a constant rate.
The three lipases act successively: adipose triglyceride lipase, hormone-sensitive lipase, and monoacylglycerol lipase hydrolyze stored triglycerides in sequence. This division of labor gives the pathway multiple enzymatic steps at which mobilization can be regulated. The final products, fatty acids and glycerol, can then serve as metabolic fuels, linking intracellular reactions to energy availability.
Insulin provides an opposing hormonal signal to the catecholamine-responsive pathway by suppressing lipolysis. This contrast helps determine whether stored triglycerides remain retained or are mobilized, depending on the organism’s metabolic state. In biology, the relationship illustrates how competing hormonal inputs coordinate fat-cell activity with broader energy balance rather than allowing unrestricted fuel release.
During fasting, exercise, and stress, organisms need to mobilize stored energy, making adipocyte lipolysis relevant to each situation. Catecholamine-associated activation connects those physiological demands with fatty-acid and glycerol release. Comparing the process across these contexts helps biology researchers examine how fat cells contribute to changing whole-body fuel requirements.
Abnormally regulated fat mobilization can disturb whole-body energy balance, which is why adipocyte lipolysis is studied in obesity, insulin resistance, and metabolic disease. The key research question is not simply whether fat is stored, but whether its release is appropriately matched to physiological demand. Altered control may therefore provide insight into broader metabolic dysfunction.
Studying adipocyte lipolysis links molecular events, including cyclic AMP and protein kinase A signaling, to organism-level questions about fuel use. It can show how hormonal cues regulate the mobilization of stored energy and how disturbances in that regulation relate to disease. This makes the process useful for connecting cell biology with physiology and metabolism.