Related Experiment Video
Updated: Jul 23, 2026
Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis
Published on: March 30, 2019
Five cardiac hormones decrease the number of human small-cell lung cancer cells
B A Vesely1, S Song, J Sanchez-Ramos
1Department of Internal Medicine, University of South Florida Cardiac Hormone Center, Tampa, FL, USA.
Background:
Four peptide hormones of a family of six hormones, i.e. atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP), C-natriuretic peptide (CNP), long acting natriuretic peptide (LANP), vessel dilator and kaliuretic peptide, significantly decrease the number of adenocarcinoma cells in culture. The present investigation was designed to determine whether these peptide hormones' effects are specific to adenocarcinomas or whether they might decrease the number of cancer cells of a different type of cancer, i.e. small-cell lung cancer.
Methods And Materials:
These six hormones were evaluated for their ability to decrease the number and/or proliferation of human small-cell lung cancer cells in culture for 24, 48, 72, and 96 h.
Results:
Within 24 h, vessel dilator, LANP, kaliuretic peptide, ANP and their intracellular mediator cyclic GMP, each at 1 microM, decreased the number of small-cell lung cancer cells by 63% (P < 0.001), 21% (P < 0.05), 30% (P < 0.05), 39% (P < 0.05), and 31% (P < 0.05), respectively. There was no proliferation in the 3 days following this decrease in cell number. These same hormones decreased DNA synthesis 68% to 82% (P < 0.001). Brain natriuretic peptide and CNP did not decrease the number of small-cell lung cancer cells or inhibit their DNA synthesis at 1 microM or 10 microM concentrations. Dose-response curves revealed that at 100 microM, the vessel dilator decreased 92% of the cancer cells in 24 h while BNP had no effect, but CNP caused a 39% decrease. Western blots revealed that the natriuretic peptide receptors A- and C- were present in these cancer cells.
Conclusions:
Five peptide hormones significantly decrease the number of human small-cell lung cancer cells within 24 h and inhibit their proliferation for at least 96 h. Their mechanism of doing so involves inhibition of DNA synthesis mediated in part by cyclic GMP.
Insights
Five peptide hormones, including vessel dilator and atrial natriuretic peptide (ANP), effectively reduce small-cell lung cancer cells and inhibit proliferation by decreasing DNA synthesis. These findings suggest potential therapeutic applications for natriuretic peptides in lung cancer treatment.
Area of Science:
- Endocrinology
- Oncology
- Molecular Biology
Background:
- Four peptide hormones from a family of six demonstrated efficacy in reducing adenocarcinoma cells in vitro.
- Previous research indicated natriuretic peptides' anti-proliferative effects on certain cancer cell types.
Purpose of the Study:
- To investigate the efficacy of six peptide hormones in reducing small-cell lung cancer (SCLC) cell numbers and proliferation.
- To determine if the anti-cancer effects of these peptide hormones extend beyond adenocarcinomas to SCLC.
Main Methods:
- Human SCLC cells were cultured and treated with six peptide hormones for 24, 48, 72, and 96 hours.
- Cell number, proliferation, and DNA synthesis were assessed. Receptor expression (natriuretic peptide receptors A and C) was analyzed via Western blot.
Main Results:
- Vessel dilator, long acting natriuretic peptide (LANP), kaliuretic peptide, and atrial natriuretic peptide (ANP) significantly decreased SCLC cell numbers and DNA synthesis within 24 hours.
- Brain natriuretic peptide (BNP) and C-natriuretic peptide (CNP) showed limited effects at lower concentrations, but CNP demonstrated efficacy at higher concentrations.
- Natriuretic peptide receptors A and C were detected in SCLC cells, suggesting a potential mechanism of action.
Conclusions:
- Five peptide hormones significantly reduce SCLC cell numbers and inhibit proliferation for up to 96 hours.
- The mechanism involves the inhibition of DNA synthesis, partly mediated by cyclic GMP.
- These findings highlight the potential of specific natriuretic peptides as therapeutic agents for small-cell lung cancer.
More Related Videos
10:41Cardiac Spheroids as in vitro Bioengineered Heart Tissues to Study Human Heart Pathophysiology
Published on: January 23, 2021
08:03Hybrid Cell Analysis System to Assess Structural and Contractile Changes of Human iPSC-Derived Cardiomyocytes for Preclinical Cardiac Risk Evaluation
Published on: October 20, 2022
Related Concept Videos
01:22Target Cell Response to Hormones
Notably, the cellular response can be regulated by altering the number of receptors expressed in the cell. For example, prolonged exposure to elevated hormone levels results in a gradual decline or down-regulation in the number of receptors for that specific hormone on the cell surface. Conversely, in response to low hormone levels, cells may use up-regulation, producing an...
01:26Heart Failure Drugs: Inhibitors of Renin-Angiotensin System