Antiproliferative Effects of Monoclonal Antibodies against (Pro)Renin Receptor in Pancreatic Ductal Adenocarcinoma.
Asadur RahmanMakoto MatsuyamaAkio EbiharaYuki ShibayamaArif Ul HasanHironori NakagamiFumiaki SuzukiJiao SunTomoe KobayashiHideki KobaraDaisuke NakanoHideki KobaraTsutomu MasakiAkira NishiyamaPublished in: Molecular cancer therapeutics (2020)
We previously reported that silencing of the PRR gene, which encodes the (pro)renin receptor [(P)RR], significantly reduced Wnt/β-catenin-dependent development of pancreatic ductal adenocarcinoma (PDAC). Here, we examined the effects of a panel of blocking mAbs directed against the (P)RR extracellular domain on proliferation of the human PDAC cell lines PK-1 and PANC-1 in vitro and in vivo We observed that four rat anti-(P)RR mAbs induced accumulation of cells in the G0-G1-phase of the cell cycle and significantly reduced proliferation in vitro concomitant with an attenuation of Wnt/β-catenin signaling. Systemic administration of the anti-(P)RR mAbs to nude mice bearing subcutaneous PK-1 xenografts significantly decreased tumor expression of active β-catenin and the proliferation marker Ki-67, and reduced tumor growth. In contrast, treatment with the handle region peptide of (pro)renin did not inhibit tumor growth in vitro or in vivo, indicating that the effects of the anti-(P)RR mAbs were independent of the renin-angiotensin system. These data indicate that mAbs against human (P)RR can suppress PDAC cell proliferation by hindering activation of the Wnt/β-catenin signaling pathway. Thus, mAb-mediated (P)RR blockade could be an attractive therapeutic strategy for PDAC.
Keyphrases
- cell proliferation
- cell cycle
- endothelial cells
- signaling pathway
- anti inflammatory
- pi k akt
- angiotensin converting enzyme
- induced pluripotent stem cells
- high glucose
- induced apoptosis
- magnetic resonance
- poor prognosis
- electronic health record
- magnetic resonance imaging
- binding protein
- genome wide
- type diabetes
- radiation therapy
- machine learning
- copy number
- lymph node
- cell death
- angiotensin ii
- skeletal muscle
- neoadjuvant chemotherapy
- pluripotent stem cells
- genome wide analysis