Related Experiment Video

Updated: Jun 8, 2026

Understanding the Changes in Mitochondrial Morphology through Dynamic and Three-dimensional Fluorescence Micrographs
08:15

Understanding the Changes in Mitochondrial Morphology through Dynamic and Three-dimensional Fluorescence Micrographs

Published on: August 15, 2025

Metabolic control of mitochondrial biogenesis through the PGC-1 family regulatory network

Richard C Scarpulla1

  • 1Department of Cell and Molecular Biology, Northwestern Medical School, 303 East Chicago Avenue, Chicago, IL 60611, USA. rsc248@northwestern.edu

Biochimica Et Biophysica Acta
|October 12, 2010
PubMed

Insights

The PGC-1 coactivator family regulates mitochondrial energy production and cellular functions. Gene studies reveal complex interactions, highlighting PGC-1

Area of Science:

  • Molecular Biology
  • Cellular Biology
  • Metabolism

Background:

  • The PGC-1 family of coactivators (PGC-1α, PGC-1β, and PRC) are key regulators of mitochondrial biogenesis and function.
  • They interact with transcription factors like NRF-1, NRF-2, and ERRα, and are influenced by chromatin remodeling complexes.
  • PGC-1 expression and activity are modulated by extracellular signals and post-translational modifications (e.g., AMPK, SIRT1).

Purpose of the Study:

  • To explore the regulatory network of the PGC-1 coactivator family.
  • To understand the integration of mitochondrial biogenesis with diverse cellular functions.
  • To review findings from gene knockout and silencing studies within the PGC-1 network.

Main Methods:

  • Review of existing literature, including gene knockout and silencing studies.
  • Analysis of regulatory interactions involving PGC-1 coactivators and transcription factors.
  • Examination of signaling pathways that modulate PGC-1 expression and activity.

Main Results:

  • PGC-1 coactivators are central to transcriptional control of mitochondrial respiration.
  • Gene manipulation studies reveal complex compensatory interactions and broad functions beyond mitochondrial biogenesis.
  • The PGC-1 family integrates energy production with various cellular processes.

Conclusions:

  • The PGC-1 family plays a critical, integrative role in cellular energy homeostasis and function.
  • Further research into the PGC-1 network is essential for understanding its broad physiological impact.
  • Mitochondria and their regulation by PGC-1 are crucial for cellular health and potentially cardioprotection.

More Related Videos

Transmitochondrial Cybrid Generation Using Cancer Cell Lines07:49

Transmitochondrial Cybrid Generation Using Cancer Cell Lines

Published on: March 17, 2023

Related Concept Videos

Regulation of Metabolism01:19

Regulation of Metabolism

Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
Mitochondrial Precursor Proteins01:39

Mitochondrial Precursor Proteins

Mitochondrial precursors are partially unfolded or loosely folded polypeptide chains. Newly synthesized precursors are inhibited from spontaneously folding into their native conformation by the cytosolic chaperones, heat shock proteins 70 (Hsp70), and mitochondrial import stimulation factors (MSFs). Precursors bound to MSFs are guided to the TOM70-TOM37 receptors, while precursors bound to Hsp70  chaperones are targetted to TOM20-TOM22 receptor complexes.
Most of the mitochondrial precursors...
Animal Mitochondrial Genetics02:59

Animal Mitochondrial Genetics

Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
Mitochondria01:37

Mitochondria

Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
Mitochondria01:37

Mitochondria

Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
Mitochondrial Protein Sorting01:39

Mitochondrial Protein Sorting

Mitochondria are double-membrane organelles of the eukaryotes involved in cellular metabolism, signaling, ATP synthesis, and programmed cell death.  Each of these processes requires specific proteins and enzymes that must be correctly sorted to the right mitochondrial subcompartment for the proper functioning of the organelle.
Most of these mitochondrial proteins are encoded by the nucleus and imported to the mitochondria as unfolded or loosely folded precursors. Mitochondrial precursors...