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Related Concept Videos

Mitochondrial Membranes01:45

Mitochondrial Membranes

A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
Mitochondrial Membranes01:45

Mitochondrial Membranes

A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
The Inner Mitochondrial Membrane01:28

The Inner Mitochondrial Membrane

The inner mitochondrial membrane is the primary site of ATP synthesis. The inner membrane domain that forms a smooth layer adjacent to the outer membrane is called the inner boundary membrane. This domain contains membrane transporters that drive metabolites in and out of the mitochondria.  In contrast, the inner membrane network that invaginates into the matrix space is called the cristae membrane. This domain accounts for principle mitochondrial function as it accommodates the protein...
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,...
Electron Transport Chains01:28

Electron Transport Chains

The final stage of cellular respiration is oxidative phosphorylation that consists of two steps: the electron transport chain and chemiosmosis. The electron transport chain is a set of proteins found in the inner mitochondrial membrane in eukaryotic cells. Its primary function is to establish a proton gradient that can be used during chemiosmosis to produce ATP and generate electron carriers, such as NAD+ and FAD, that are used in glycolysis and the citric acid cycle.
The ETC is comprised of...

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An Improved Method to Isolate Mitochondrial Contact Sites
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Inter-connection between mitochondria and HIFs.

Kathryn V Tormos1, Navdeep S Chandel

  • 1Division of Pulmonary & Critical Care Medicine, Department of Medicine, Northwestern University Medical School, Chicago, IL 60611-2909, USA.

Journal of Cellular and Molecular Medicine
|February 18, 2010
PubMed
Summary
This summary is machine-generated.

Hypoxia-inducible factors (HIFs) and mitochondria are interconnected, regulating each other

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Published on: October 26, 2021

Area of Science:

  • Biochemistry
  • Cellular Biology
  • Physiology

Background:

  • Hypoxia-inducible factors (HIFs), including HIF-1 and HIF-2, are crucial transcription factors.
  • HIFs regulate cellular responses to low oxygen, impacting erythropoietin, VEGF, and glycolysis.
  • Emerging evidence suggests HIFs influence mitochondrial respiration and oxidative stress.

Purpose of the Study:

  • To review the intricate relationship between HIFs and mitochondria.
  • To explore how mitochondria and HIFs mutually regulate each other.
  • To understand their combined role in hypoxic responses.

Main Methods:

  • Literature review of recent studies.
  • Analysis of the interplay between HIF activation and mitochondrial function.
  • Examination of evidence linking mitochondrial metabolism to HIF regulation.

Main Results:

  • HIFs regulate mitochondrial respiration and oxidative stress.
  • Mitochondrial metabolism, respiration, and oxidative stress modulate HIF activation.
  • A bidirectional regulatory loop exists between HIFs and mitochondria.

Conclusions:

  • Mitochondria and HIFs are intimately connected, forming a regulatory network.
  • This interconnectedness is vital for orchestrating appropriate cellular responses to hypoxia.
  • Further research into this crosstalk is essential for understanding hypoxic adaptation.