Regulation and function of the mammalian tricarboxylic acid cycle

PK Arnold, LWS Finley - Journal of Biological Chemistry, 2023 - ASBMB
The tricarboxylic acid (TCA) cycle, otherwise known as the Krebs cycle, is a central
metabolic pathway that performs the essential function of oxidizing nutrients to support …

Cardiac energy metabolism in heart failure

GD Lopaschuk, QG Karwi, R Tian, AR Wende… - Circulation …, 2021 - Am Heart Assoc
Alterations in cardiac energy metabolism contribute to the severity of heart failure. However,
the energy metabolic changes that occur in heart failure are complex and are dependent not …

[HTML][HTML] Lactic acid promotes PD-1 expression in regulatory T cells in highly glycolytic tumor microenvironments

S Kumagai, S Koyama, K Itahashi, T Tanegashima… - Cancer Cell, 2022 - cell.com
The balance of programmed death-1 (PD-1)-expressing CD8+ T cells and regulatory T
(Treg) cells in the tumor microenvironment (TME) determines the clinical efficacy of PD-1 …

[HTML][HTML] Lactate activates the mitochondrial electron transport chain independently of its metabolism

X Cai, CP Ng, O Jones, TS Fung, KW Ryu, D Li… - Molecular cell, 2023 - cell.com
Lactate has long been considered a cellular waste product. However, we found that as
extracellular lactate accumulates, it also enters the mitochondrial matrix and stimulates …

Role of LDH in tumor glycolysis: regulation of LDHA by small molecules for cancer therapeutics

D Sharma, M Singh, R Rani - Seminars in cancer biology, 2022 - Elsevier
Lactate dehydrogenase (LDH) is one of the crucial enzymes in aerobic glycolysis, catalyzing
the last step of glycolysis, ie. the conversion of pyruvate to lactate. Most cancer cells are …

Lactate: the ugly duckling of energy metabolism

JD Rabinowitz, S Enerbäck - Nature metabolism, 2020 - nature.com
Lactate, perhaps the best-known metabolic waste product, was first isolated from sour milk,
in which it is produced by lactobacilli. Whereas microbes also generate other fermentation …

Lactate in the regulation of tumor microenvironment and therapeutic approaches

KG de la Cruz-López, LJ Castro-Muñoz… - Frontiers in …, 2019 - frontiersin.org
Tumor cells must generate sufficient ATP and biosynthetic precursors in order to maintain
cell proliferation requirements. Otto Warburg showed that tumor cells uptake high amounts …

The Warburg effect: a signature of mitochondrial overload

Y Wang, GJ Patti - Trends in cell biology, 2023 - cell.com
A long-standing question in cancer biology has been why oxygenated tumors ferment the
majority of glucose they consume to lactate rather than oxidizing it in their mitochondria, a …

Metabolic coordination of T cell quiescence and activation

NM Chapman, MR Boothby, H Chi - Nature reviews immunology, 2020 - nature.com
Naive T cells are actively maintained in a quiescent state that promotes their survival and
persistence. On antigen stimulation, T cells exit quiescence to initiate clonal expansion and …

[HTML][HTML] Lactate as a fulcrum of metabolism

GA Brooks - Redox biology, 2020 - Elsevier
Mistakenly thought to be the consequence of oxygen lack in contracting skeletal muscle we
now know that the L-enantiomer of the lactate anion is formed under fully aerobic conditions …