The present studies were undertaken to assess the effects of atrial natriuretic factor (ANF) on erythropoietin (Ep) secretion in Ep-producing renal carcinoma (RC) cells using a sensitive radioimmunoassay for Ep. Human ANF produced a significant dose-related increase in Ep secretion at concentrations of 10(-7) and 10(-6) M when compared with vehicle controls. ANF (greater than or equal to 10(-9) M) also significantly increased the intracellular guanosine 3',5'-cyclic monophosphate (cGMP) concentration after 5-min incubation with the RC cells. Scatchard analysis of the human 125I-labeled ANF binding data indicated that the RC cells contain a single class of binding sites with a dissociation constant (Kd) of 93 +/- 1 pM and a binding capacity of 2,190 +/- 750 sites/cell. Incubation of the RC cells with 8-bromo-cGMP in concentrations of 10(-7)-10(-5) M also produced a significant dose-related enhancement of Ep secretion. These findings suggest that the increase in Ep secretion in response to ANF can be attributed, at least in part, to activation of guanylate cyclase, which is coupled to specific ANF receptors on the RC cell.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1152/ajpcell.1990.259.3.C427 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Endogenous peptide CBDP1 inhibits clear cell renal cell carcinoma progression by targeting USP5/YTHDF2/TRPM5 axis.
J Transl Med
January 2025
Medical School of Nanjing University, Nanjing, 210093, China.
Background: Clear cell renal cell carcinoma (ccRCC) has a high incidence rate and poor prognosis, and currently lacks effective therapies. Recently, peptide-based drugs have shown promise in cancer treatment. In this research, a new endogenous peptide called CBDP1 was discovered in ccRCC and its potential anti-cancer properties were examined.
View Article and Find Full Text PDFOverexpression of PLCG2 and TMEM38A inhibit tumor progression in clear cell renal cell carcinoma.
Sci Rep
January 2025
Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China.
Clear cell renal cell carcinoma is a prevalent urological malignancy, imposing substantial burdens on both patients and society. In our study, we used bioinformatics methods to select four putative target genes associated with EMT and prognosis and developed a nomogram model which could accurately predicting 5-year patient survival rates. We further analyzed proteome and single-cell data and selected PLCG2 and TMEM38A for the following experiments.
View Article and Find Full Text PDFA mouse model to assess immunotherapy-related colitis.
Methods Cell Biol
January 2025
Laboratory of Translational Oncology, Program in Solid Tumors, Cima Universidad de Navarra, Cancer Center Clínica Universidad de Navarra (CCUN), Pamplona, Spain; Department of Biochemistry and Genetics, School of Sciences, Universidad de Navarra, Pamplona, Spain; Navarra's Health Research Institute (IDISNA), Pamplona, Spain; Centro de Investigación Biomédica en Red Cáncer (CIBERONC), Madrid, Spain. Electronic address:
Combined blockade of the immune checkpoints PD-1 and CTLA-4 has shown remarkable efficacy in patients with melanoma, renal cell carcinoma, non-small-cell lung cancer and mesothelioma, among other tumor types. However, a proportion of patients suffer from serious immune-related adverse events (irAEs). In severe cases, a reduction of the doses or the complete cessation of the treatment is required, limiting the antitumor efficacy of these treatments.
View Article and Find Full Text PDFALB inhibits tumor cell proliferation and invasion by regulating immune microenvironment and endoplasmic reticulum stress in clear cell renal cell carcinoma.
Biochim Biophys Acta Mol Basis Dis
January 2025
Department of Urology, Urology Research Institute, the First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Fujian Key Laboratory of Precision Medicine for Cancer, the First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China. Electronic address:
Objective: The aim of this work is to identify putative hub genes for the advancement of clear cell renal cell carcinoma (ccRCC) and determine the fundamental mechanisms.
Methods: We employed multiple bioinformatics techniques to screen hub genes. Key hub gene expression levels in ccRCC were assessed.
Management of renal cell carcinoma with ablation in comparison to nephrectomy: A 5-year analysis of inpatient procedural data to evaluate utilization disparities in the United States.
Clin Imaging
January 2025
Massachusetts General Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA.
Purpose: To perform a nationwide analysis of ablation compared to partial and total nephrectomy for the management of renal cell carcinoma (RCC) to evaluate utilization trends and disparities in the USA.
Materials And Methods: The 2016-2020 National Inpatient Sample was analyzed. Using ICD-10, we identified the diagnosis of RCC then analyzed the utilization trends of ablation and nephrectomies (both partial and complete).
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!