» Articles » PMID: 32432379

A Novel Approach to Measure Mitochondrial Respiration in Frozen Biological Samples

Abstract

Respirometry is the gold standard measurement of mitochondrial oxidative function, as it reflects the activity of the electron transport chain complexes working together. However, the requirement for freshly isolated mitochondria hinders the feasibility of respirometry in multi-site clinical studies and retrospective studies. Here, we describe a novel respirometry approach suited for frozen samples by restoring electron transfer components lost during freeze/thaw and correcting for variable permeabilization of mitochondrial membranes. This approach preserves 90-95% of the maximal respiratory capacity in frozen samples and can be applied to isolated mitochondria, permeabilized cells, and tissue homogenates with high sensitivity. We find that primary changes in mitochondrial function, detected in fresh tissue, are preserved in frozen samples years after collection. This approach will enable analysis of the integrated function of mitochondrial Complexes I to IV in one measurement, collected at remote sites or retrospectively in samples residing in tissue biobanks.

Citing Articles

Metabolic dysregulation contributes to the development of dysferlinopathy.

Furrer R, Dilbaz S, Steurer S, Santos G, Karrer-Cardel B, Ritz D Life Sci Alliance. 2025; 8(5).

PMID: 40021220 PMC: 11871293. DOI: 10.26508/lsa.202402991.


An investigation into the sex dependence of post-reperfusion cardiac mitochondrial function and redox balance in chronically stressed rats.

Cairns M, Andrews J, Odendaal C, OBrien C, Marais E, Maarman G Physiol Rep. 2025; 13(5):e70185.

PMID: 40000919 PMC: 11859663. DOI: 10.14814/phy2.70185.


Dual regulation of mitochondrial fusion by Parkin-PINK1 and OMA1.

Yamada T, Ikeda A, Murata D, Wang H, Zhang C, Khare P Nature. 2025; .

PMID: 39972141 DOI: 10.1038/s41586-025-08590-2.


Functional compartmentalization of hepatic mitochondrial subpopulations during MASH progression.

Talari N, Mattam U, Rahman A, Hemmelgarn B, Wyder M, Sylvestre P Commun Biol. 2025; 8(1):258.

PMID: 39966593 PMC: 11836293. DOI: 10.1038/s42003-025-07713-9.


Polysulfur-based bulking of dynamin-related protein 1 prevents ischemic sulfide catabolism and heart failure in mice.

Nishimura A, Ogata S, Tang X, Hengphasatporn K, Umezawa K, Sanbo M Nat Commun. 2025; 16(1):276.

PMID: 39747092 PMC: 11695708. DOI: 10.1038/s41467-024-55661-5.


References
1.
Bosshart H, Heinzelmann M . THP-1 cells as a model for human monocytes. Ann Transl Med. 2016; 4(21):438. PMC: 5124613. DOI: 10.21037/atm.2016.08.53. View

2.
Assan R, Heuclin C, Girard J, Lemaire F, Attali J . Phenformin-induced lactic acidosis in diabetic patients. Diabetes. 1975; 24(9):791-800. DOI: 10.2337/diab.24.9.791. View

3.
Schagger H, von Jagow G . Blue native electrophoresis for isolation of membrane protein complexes in enzymatically active form. Anal Biochem. 1991; 199(2):223-31. DOI: 10.1016/0003-2697(91)90094-a. View

4.
Masson-Pevet M, Jongsma H, de Bruijne J . Collagenase- and trypsin-dissociated heart cells: a comparative ultrastructural study. J Mol Cell Cardiol. 1976; 8(10):747-57. DOI: 10.1016/0022-2828(76)90082-1. View

5.
Cottet-Rousselle C, Ronot X, Leverve X, Mayol J . Cytometric assessment of mitochondria using fluorescent probes. Cytometry A. 2011; 79(6):405-25. DOI: 10.1002/cyto.a.21061. View