Metabolic imaging: A link between lactate dehydrogenase A, lactate, and tumor phenotype Journal Article
| Authors: | Serganova, I.; Rizwan, A.; Ni, X.; Thakur, S. B.; Vider, J.; Russell, J.; Blasberg, R.; Koutcher, J. A. |
| Article Title: | Metabolic imaging: A link between lactate dehydrogenase A, lactate, and tumor phenotype |
| Abstract: | Purpose: We compared the metabolic profiles and the association between LDH-A expression and lactate production in two isogenic murine breast cancer cell lines and tumors (67NR and 4T1). These cell lines were derived from a single mammary tumor and have different growth and metabolic phenotypes. Experimental Design: LDH-A expression, lactate concentration, glucose utilization, and oxygen consumption were measured in cells, and the potential relationship between tumor lactate levels [measured by magnetic resonance spectroscopic imaging (MRSI)] and tumor glucose utilization [measured by [ 18F]2-deoxy-2-fluoro-D-glucose positron emission tomography ([ 18F]FDG-PET)] was assessed in orthotopic breast tumors derived from these cell lines. Results: We show a substantial difference in LDH-A expression between 67NR and 4T1 cells under normoxia and hypoxia. We also show that small orthotopic 4T1 tumors generate 10-fold more lactate than corresponding 67NR tumors. The high lactate levels in small primary 4T1 tumors are associated with intense pimonidazole staining (a hypoxia indicator). Less-intense hypoxia staining was observed in the larger 67NR tumors and is consistent with the gradual increase and plateau of lactate concentration in enlarging 67NR tumors. Conclusions: Lactate-MRSI has a greater dynamic range than [18F]FDG-PET and may be a more sensitive measure with which to evaluate the aggressive and metastatic potential of primary breast tumors. ©2011 AACR. |
| Keywords: | controlled study; protein expression; primary tumor; unclassified drug; cancer growth; nonhuman; positron emission tomography; animal cell; mouse; phenotype; animals; mice; breast cancer; tumor volume; oxygen; animal experiment; animal model; molecular imaging; cell line, tumor; cell type; biosynthesis; mice, nude; rna, messenger; cancer cell; fluorodeoxyglucose f 18; glucose; lactate dehydrogenase; pimonidazole; cell hypoxia; neoplasm transplantation; cancer classification; cell level; oxygen consumption; cell metabolism; l-lactate dehydrogenase; isoenzymes; proton nuclear magnetic resonance; lactic acid; mammary neoplasms, animal; glucose metabolism; lactate dehydrogenase isoenzyme 5 |
| Journal Title: | Clinical Cancer Research |
| Volume: | 17 |
| Issue: | 19 |
| ISSN: | 1078-0432 |
| Publisher: | American Association for Cancer Research |
| Date Published: | 2011-01-01 |
| Start Page: | 6250 |
| End Page: | 6261 |
| Language: | English |
| DOI: | 10.1158/1078-0432.ccr-11-0397 |
| PROVIDER: | scopus |
| PUBMED: | 21844011 |
| PMCID: | PMC4217119 |
| DOI/URL: | |
| Notes: | --- - "Export Date: 2 November 2011" - "CODEN: CCREF" - "Source: Scopus" |
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