Relaxin/RXFP1 signaling in prostate cancer progression.
We found that relaxin peptide expression is significantly elevated in recurrent human prostate cancer. Stimulation with relaxin increased migration, invasiveness, proliferation, and adhesion of LNCaP and PC3 cells in vitro. Opposite effects on cellular phenotype were observed after suppression of endogenous relaxin/RXFP1 expression or signaling. We showed an accelerated progression of prostate cancer in TRAMP males with transgenic relaxin overexpression and a longer survival of TRAMP, RXFP1-deficient males. Suppression of RXFP1 expression in PC3 xenografts in nude mice by intratumoral injections of short interfering RNA resulted in decreased tumor size, cell proliferation, and metastasis rate.
Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, Texas 77030, USA.
Shu
S
Feng
Irina U
IU
Agoulnik
Zhen
Z
Li
Hee Dong
HD
Han
Gabriel
G
Lopez-Berestein
Anil
A
Sood
Michael M
MM
Ittmann
Alexander I
AI
Agoulnik
D000818:Animals; D002448:Cell Adhesion / Q000187:drug effects; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D018450:Disease Progression; D006801:Humans; D008297:Male; D051379:Mice; D008819:Mice, Nude; D008822:Mice, Transgenic; D011471:Prostatic Neoplasms / Q000378:metabolism* / Q000473:pathology; D034622:RNA Interference; D043562:Receptors, G-Protein-Coupled / Q000235:genetics / Q000502:physiology*; D018000:Receptors, Peptide / Q000235:genetics / Q000502:physiology*; D012065:Relaxin / Q000235:genetics / Q000494:pharmacology / Q000502:physiology*; D015398:Signal Transduction
C417543:RXFP1 protein, human; D043562:Receptors, G-Protein-Coupled; D018000:Receptors, Peptide; D012065:Relaxin