Molood Shariati1,2, Heyang Zhang1, Leen Van de Sande2,3, Benedicte Descamps4, Chris Vanhove4, Wouter Willaert2,3, Wim Ceelen2,3, Stefaan C De Smedt5,6,7, Katrien Remaut8,9. 1. Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, 9000, Ghent, Belgium. 2. Cancer Research Institute Ghent (CRIG), Ghent, Belgium. 3. Department of GI Surgery, Ghent University Hospital and Laboratory for Experimental Surgery, Ghent University, De Pintelaan 185, 9000, Ghent, Belgium. 4. Department of Electronics and Information Systems, 9000, Ghent, Belgium. 5. Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, 9000, Ghent, Belgium. Stefaan.Desmedt@UGent.be. 6. Cancer Research Institute Ghent (CRIG), Ghent, Belgium. Stefaan.Desmedt@UGent.be. 7. College of Chemical Engineering, Jiangsu Key Lab of Biomass-based Green Fuels and Chemicals, Nanjing Forestry University, Nanjing, 210037, People's Republic of China. Stefaan.Desmedt@UGent.be. 8. Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, 9000, Ghent, Belgium. Katrien.Remaut@UGent.be. 9. Cancer Research Institute Ghent (CRIG), Ghent, Belgium. Katrien.Remaut@UGent.be.
Abstract
PURPOSE: Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a novel technique delivering drugs into the abdominal cavity as an aerosol under high pressure. It is hypothesized to have advantages such as enhancing tissue uptake, distributing drugs homogeneously within the closed and expanded abdominal cavity and higher local concentration of drugs in the peritoneal cavity. However, the clinical trials of PIPAC so far are limited to liquid chemotherapeutic solution, and the applicability of biomolecules (such as mRNA, siRNA and oligonucleotide) is not known. We aimed to investigate the feasibility of administrating mRNA lipoplexes to the peritoneal cavity via high pressure nebulization. METHODS: We firstly investigated the influences of nebulization on physicochemical properties and in vitro transfection efficiency of mRNA lipoplexes. Then, mRNA lipoplexes were delivered to healthy rats through intravenous injection, intraperitoneal injection and PIPAC, respectively. RESULTS: mRNA lipoplexes can withstand the high pressure applied during the PIPAC procedure in vitro. Bioluminescence localized to the peritoneal cavity of rats after administration by IP injection and nebulization, while intravenous injection mainly induced protein expression in the spleen. CONCLUSION: This study demonstrated that local nebulization is feasible to apply mRNA complexes in the peritoneal cavity during a PIPAC procedure.
PURPOSE: Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a novel technique delivering drugs into the abdominal cavity as an aerosol under high pressure. It is hypothesized to have advantages such as enhancing tissue uptake, distributing drugs homogeneously within the closed and expanded abdominal cavity and higher local concentration of drugs in the peritoneal cavity. However, the clinical trials of PIPAC so far are limited to liquid chemotherapeutic solution, and the applicability of biomolecules (such as mRNA, siRNA and oligonucleotide) is not known. We aimed to investigate the feasibility of administrating mRNA lipoplexes to the peritoneal cavity via high pressure nebulization. METHODS: We firstly investigated the influences of nebulization on physicochemical properties and in vitro transfection efficiency of mRNA lipoplexes. Then, mRNA lipoplexes were delivered to healthy rats through intravenous injection, intraperitoneal injection and PIPAC, respectively. RESULTS: mRNA lipoplexes can withstand the high pressure applied during the PIPAC procedure in vitro. Bioluminescence localized to the peritoneal cavity of rats after administration by IP injection and nebulization, while intravenous injection mainly induced protein expression in the spleen. CONCLUSION: This study demonstrated that local nebulization is feasible to apply mRNA complexes in the peritoneal cavity during a PIPAC procedure.