From Electrons to Cancer: Redox Shift as a Driving Force of Tumorigenesis DOI
Romain Attal, Ashraf Bakkar, Frédéric Bouillaud

et al.

Published: Jan. 1, 2023

Cancer cells are very diverse but mostly share a common metabolic property: they strongly glycolytic even though oxygen is available. Herein, the abnormalities of cancer interpreted as modifications electric currents in redox reactions. A lower current electron transport chain, an increase concentration reduced cofactors and partial reversal tricarboxylic acid cycle physical characteristics several forms cancer. The existence short-circuits between oxidative branches reductive network argue favor electronic approach nanoscopic scale. These changes flows induce pseudo-hypoxia Warburg effect through succinate production divert electrons from to biosynthetic pathways. This new look at may have potential therapeutic applications.

Language: Английский

The Warburg Effect Reinterpreted 100 yr on: A First-Principles Stoichiometric Analysis and Interpretation from the Perspective of ATP Metabolism in Cancer Cells DOI Creative Commons
Sunil Nath, Rudi Balling

Function, Journal Year: 2024, Volume and Issue: 5(3)

Published: Jan. 1, 2024

Abstract The Warburg Effect is a longstanding enigma in cancer biology. Despite the passage of 100 yr since its discovery, and accumulation vast body research on subject, no convincing biochemical explanation has been given for original observations aerobic glycolysis cell metabolism. Here, we have worked out first-principles quantitative analysis problem from principles stoichiometry available electron balance. results interpreted using Nath’s unified theory energy coupling adenosine triphosphate (ATP) synthesis, data colleagues analyzed this new perspective. Use biomass yield based ATP per unit substrate consumed, ${{Y}_{X/S}}\ ATP$, or Nath-Warburg number, NaWa shown to excellently model with very small standard deviation values, without employing additional fitted adjustable parameters. Based analysis, novel conservative mechanism utilization, recycling other key metabolites (eg, lactate) proposed. offers fresh insights into metabolic symbiosis within and/or among proliferating cells. fundamental understanding gained our approach should help catalyzing development more efficient metabolism-targeting anticancer drugs.

Language: Английский

Citations

7

ROCK2 increases drug resistance in acute myeloid leukemia via metabolic reprogramming and MAPK/PI3K/AKT signaling DOI

Muxia Yan,

Xin Luo,

Hong Han

et al.

International Immunopharmacology, Journal Year: 2024, Volume and Issue: 140, P. 112897 - 112897

Published: Aug. 9, 2024

Language: Английский

Citations

5

The Mechanisms and Therapeutic Implications of Metabolic Communication in the Tumor-Immune Microenvironment DOI
Mahmoud Singer, Rania Hamdy,

Tasneem M. Elsayed

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0

Identification of Salivary Biomarkers in Colorectal Cancer by Integrating Olink Proteomics and Metabolomics DOI

Hairong Su,

Xiangyu Gu,

Weizheng Zhang

et al.

Journal of Proteome Research, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

Identifying novel biomarkers is crucial for early detection of colorectal cancer (CRC). Saliva, as a noninvasive sample, holds promise CRC detection. Here, we used Olink proteomics and untargeted metabolomics to analyze saliva samples from patients healthy controls with the aim identifying candidate in saliva. Univariate multivariate analyses revealed 16 differentially expressed proteins (DEPs) 40 accumulated metabolites (DAMs). Pathway enrichment showed DEPs were mainly involved transcriptional dysregulation, Toll-like receptor signaling, chemokine signaling. Metabolomics analysis highlighted significant changes amino acid metabolites, particularly pathways such arginine biosynthesis, histidine metabolism, cysteine methionine metabolism. Random forest ELISA validation identified four potential biomarkers: succinate, l-methionine, GZMB, MMP12. A combined protein-metabolite diagnostic model was developed using logistic regression, achieving an area under curve 0.933 (95% CI: 0.871-0.996) discovery cohort 0.969 0.918-1.000) cohort, effectively distinguishing individuals. In conclusion, our study validated panel saliva-based that could improve screening provide new insights into clinical diagnosis.

Language: Английский

Citations

0

Expression of Mitochondrial Long Non-Coding RNAs, MDL1 and MDL1AS, Are Good Prognostic and/or Diagnostic Biomarkers for Several Cancers, Including Colorectal Cancer DOI Open Access
Pablo Garrido, Adrián Casas-Benito, Ignacio M. Larráyoz

et al.

Cancers, Journal Year: 2024, Volume and Issue: 16(5), P. 960 - 960

Published: Feb. 27, 2024

Non-coding RNAs provide new opportunities to identify biomarkers that properly classify cancer patients. Here, we study the biomarker status of mitochondrial long non-coding RNAs, MDL1 and MDL1AS. Expression these genes was studied in public transcriptomic databases. In addition, a cohort 69 locally advanced rectal (LARC) patients with follow-up more than 5 years used determine prognostic value markers. Furthermore, cell lines colorectal (HCT116) breast (MDA-MB-231) carcinoma were employed effects downregulating MDL1AS vitro. (but not MDL1) significantly different tumor cells surrounding tissue tumor-type-specific context. Both accurate for 5-year survival LARC (p = 0.040 p 0.007, respectively) promising areas under curve ROC analyses (0.820 0.930, respectively). downregulation reduced respiration both lines. this produced decrease growth migration on cells, but reverse cells. summary, can be as reliable LARC, expression provides relevant information diagnosis cancers.

Language: Английский

Citations

3

Comprehensive overview of how to fade into succinate dehydrogenase dysregulation in cancer cells by naringenin-loaded chitosan nanoparticles DOI Creative Commons
Eman M. Ragab, Abeer A. Khamis,

Doaa M. El Gamal

et al.

Genes & Nutrition, Journal Year: 2024, Volume and Issue: 19(1)

Published: May 27, 2024

Mitochondrial respiration complexes play a crucial function. As result, dysfunction or change is intimately associated with many different diseases, among them cancer. The epigenetic, evolutionary, and metabolic effects of mitochondrial complex IΙ are the primary concerns our review. Provides novel insight into vital role naringenin (NAR) as an intriguing flavonoid phytochemical in cancer treatment. NAR significant that member flavanone group polyphenols mostly present citrus fruits, such grapefruits, well other fruits vegetables, like tomatoes cherries, foods produced from medicinal herbs. evidence now available indicates NAR, herbal remedy, has pharmacological qualities anti-cancer effects. Through variety mechanisms, including induction apoptosis, cell cycle arrest, restriction angiogenesis, modulation several signaling pathways, prevents growth However, hydrophobic crystalline structure primarily responsible for its instability, limited oral bioavailability, water solubility. Furthermore, there no targeting high rate breakdown acidic environment. These shortcomings barriers to efficient medical application. Improvement ΙΙ by loading it on chitosan nanoparticles promising strategy.

Language: Английский

Citations

1

From electrons to cancer : Redox shift as a driving force of tumorigenesis DOI Creative Commons
Romain Attal, Ashraf Bakkar, Frédéric Bouillaud

et al.

Advances in Redox Research, Journal Year: 2023, Volume and Issue: 10, P. 100087 - 100087

Published: Nov. 30, 2023

Cancer cells are very diverse but mostly share a common metabolic property: they strongly glycolytic even though oxygen is available. Herein, the abnormalities of cancer interpreted as modifications electric currents in redox reactions. A lower current electron transport chain, an increase concentration reduced cofactors and partial reversal tricarboxylic acid cycle physical characteristics several forms cancer. The existence short-circuits between oxidative branches reductive network argue favor electronic approach nanoscopic scale. These changes flows induce pseudo-hypoxia Warburg effect through succinate production divert electrons from to biosynthetic pathways. This new look at may have potential therapeutic applications.

Language: Английский

Citations

2

Bacteriophage-encoded 24B_1 molecule resembles herpesviral microRNAs and plays a crucial role in the development of both the virus and its host DOI Creative Commons
Sylwia Bloch, Natalia Lewandowska, Joanna Zwolenkiewicz

et al.

PLoS ONE, Journal Year: 2023, Volume and Issue: 18(12), P. e0296038 - e0296038

Published: Dec. 20, 2023

The 24B_1 small non-coding RNA molecule has been identified in Escherichia coli after induction of Shiga toxin-converting bacteriophage Φ24B. In this work, we focused on its direct role during phage and bacterial host development. We observed that many aspects, sRNA resembles herpesviral microRNAs. Similar to microRNAs, the mature is a short molecule, consisting just 20 nucleotides. It generated by cleaving 80-nt long precursor transcript, likely it undergoes multi-step maturation process which Hfq protein plays an important role, as confirmed demonstration binding precursor, but not form. Moreover, significant maintaining prophage state reprogramming host's energy metabolism. proved overproduction causes opposite physiological effects mutant devoid gene, thus, favors lysogenic pathway. Furthermore, overrepresentation significantly increases efficiency expression genes coding for proteins CI, CII, CIII are engaged maintenance prophage. seems through mRNA sdhB succinate dehydrogenase subunit, alters central carbon metabolism drop ATP intracellular level. Interestingly, similar effect, called Warburg switch, caused microRNAs cancer cells. advantage effect still unclear, however, was proposed cells, all rapidly dividing adopted convert nutrients such glucose glutamine faster more efficiently into biomass. availability essential building blocks, nucleotides, amino acids, lipids, crucial effective cell proliferation turn stay state.

Language: Английский

Citations

1

uL3 Regulates Redox Metabolism and Ferroptosis Sensitivity of p53-Deleted Colorectal Cancer Cells DOI Creative Commons
Chiara Brignola,

Annalisa Pecoraro,

Camilla Danisi

et al.

Antioxidants, Journal Year: 2024, Volume and Issue: 13(7), P. 757 - 757

Published: June 22, 2024

Despite advancements in therapeutic strategies, the development of drug resistance and metastasis remains a serious concern for efficacy chemotherapy against colorectal cancer (CRC). We have previously demonstrated that low expression ribosomal protein uL3 positively correlates with chemoresistance CRC patients. Here, we loss increased metastatic capacity cells chick embryos. Metabolomic analysis revealed large perturbations amino acid glutathione metabolism resistant uL3-silenced cells, indicating silencing dramatically triggered redox metabolic reprogramming. RNA-Seq data notable dysregulation 108 genes related to ferroptosis Solute Carrier Family 7 Member 11 (SLC7A11) is one most dysregulated genes; its mRNA stability negatively regulated by uL3, inversely correlated levels. Inhibition SLC7A11 erastin impaired cell survival inducing ferroptosis. Of interest, combined treatment plus enhanced chemotherapeutic sensitivity erastin. The antimetastatic potential strategy was evaluated Overall, our study sheds light on uL3-mediated provides evidence novel approach, induce ferroptosis, establishing individualized therapy examining p53, profiles tumors.

Language: Английский

Citations

0

Similar deficiencies, different outcomes: succinate dehydrogenase loss in adrenal medulla vs. fibroblast cell culture models of paraganglioma DOI Creative Commons

Fatimah J. Al Khazal,

Sanjana Mahadev Bhat, Yuxiang Zhu

et al.

Cancer & Metabolism, Journal Year: 2024, Volume and Issue: 12(1)

Published: Dec. 23, 2024

Heterozygosity for loss-of-function alleles of the genes encoding four subunits succinate dehydrogenase (SDHA, SDHB, SDHC, SDHD), as well SDHAF2 assembly factor predispose affected individuals to pheochromocytoma and paraganglioma (PPGL), two rare neuroendocrine tumors that arise from neural crest-derived paraganglia. Tumorigenesis results loss remaining functional SDHx gene copy, leading a cell with no SDH defective tricarboxylic acid (TCA) cycle. It is believed subsequent accumulation competitively inhibits multiple dioxygenase enzymes normally suppress hypoxic signaling demethylate histones DNA, ultimately increased expression involved in angiogenesis proliferation. Why selectively tumorigenic cells remains poorly understood. In absence SDH-loss tumor-derived models, cellular burden have been investigated through conditional knockouts pre-existing murine or human lines varying degrees clinical relevance. Here we characterize available lines, immortalized adrenally-derived premature chromaffin vs. fibroblasts, at level detail beyond currently reported literature intention laying foundation future investigations into adaptive pathways vulnerabilities cells. We report different mechanistic phenotypic manifestations subunit presented contexts. These findings highlight similarities differences response between models. show display more severe morphological mitochondrial alterations, yet are unique preserving residual Complex I function, perhaps allowing them better tolerate loss, thus making closer model PPGL relative fibroblasts.(281 words).

Language: Английский

Citations

0