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Moussa M, Chowdhury MR, Mwin D, Fatih M, Selveraj G, Abdelmonem A, Farghaly M, Dou Q, Filipczak N, Levchenko T, Torchilin VP, Boussiotis V, Goldberg SN, Ahmed M. Combined thermal ablation and liposomal granulocyte-macrophage colony stimulation factor increases immune cell trafficking in a small animal tumor model. PLoS One 2023; 18:e0293141. [PMID: 37883367 PMCID: PMC10602257 DOI: 10.1371/journal.pone.0293141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 10/05/2023] [Indexed: 10/28/2023] Open
Abstract
PURPOSE To characterize intratumoral immune cell trafficking in ablated and synchronous tumors following combined radiofrequency ablation (RFA) and systemic liposomal granulocyte-macrophage colony stimulation factor (lip-GM-CSF). METHODS Phase I, 72 rats with single subcutaneous R3230 adenocarcinoma were randomized to 6 groups: a) sham; b&c) free or liposomal GM-CSF alone; d) RFA alone; or e&f) combined with blank liposomes or lip-GM-CSF. Animals were sacrificed 3 and 7 days post-RFA. Outcomes included immunohistochemistry of dendritic cells (DCs), M1 and M2 macrophages, T-helper cells (Th1) (CD4+), cytotoxic T- lymphocytes (CTL) (CD8+), T-regulator cells (T-reg) (FoxP3+) and Fas Ligand activated CTLs (Fas-L+) in the periablational rim and untreated index tumor. M1/M2, CD4+/CD8+ and CD8+/FoxP3+ ratios were calculated. Phase II, 40 rats with double tumors were randomized to 4 groups: a) sham, b) RFA, c) RFA-BL and d) RFA-lip-GM-CSF. Synchronous untreated tumors collected at 7d were analyzed similarly. RESULTS RFA-lip-GMCSF increased periablational M1, CTL and CD8+/FoxP3+ ratio at 3 and 7d, and activated CTLs 7d post-RFA (p<0.05). RFA-lip-GMSCF also increased M2, T-reg, and reduced CD4+/CD8+ 3 and 7d post-RFA respectively (p<0.05). In untreated index tumor, RFA-lip-GMCSF improved DCs, M1, CTLs and activated CTL 7d post-RFA (p<0.05). Furthermore, RFA-lip-GMSCF increased M2 at 3 and 7d, and T-reg 7d post-RFA (p<0.05). In synchronous tumors, RFA-BL and RFA-lip-GM-CSF improved DC, Th1 and CTL infiltration 7d post-RFA. CONCLUSION Systemic liposomal GM-CSF combined with RFA improves intratumoral immune cell trafficking, specifically populations initiating (DC, M1) and executing (CTL, FasL+) anti-tumor immunity. Moreover, liposomes influence synchronous untreated metastases increasing Th1, CTL and DCs infiltration.
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Affiliation(s)
- Marwan Moussa
- The Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, Massachusetts, United States of America
| | - Md. Raihan Chowdhury
- The Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, Massachusetts, United States of America
| | - David Mwin
- The Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, Massachusetts, United States of America
| | - Mohamed Fatih
- The Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, Massachusetts, United States of America
| | - Gokul Selveraj
- The Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, Massachusetts, United States of America
| | - Ahmed Abdelmonem
- The Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, Massachusetts, United States of America
| | - Mohamed Farghaly
- The Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, Massachusetts, United States of America
| | - Qianhui Dou
- The Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, Massachusetts, United States of America
| | - Nina Filipczak
- Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts, United States of America
| | - Tatyana Levchenko
- Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts, United States of America
| | - Vladimir P. Torchilin
- Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts, United States of America
| | - Vassiliki Boussiotis
- Department of Hemotolgy and Oncology, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, Massachusetts, United States of America
| | - S. Nahum Goldberg
- The Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Radiology, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - Muneeb Ahmed
- The Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, Massachusetts, United States of America
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Ahmed M, Kumar G, Gourevitch S, Levchenko T, Galun E, Torchilin V, Goldberg SN. Radiofrequency ablation (RFA)-induced systemic tumor growth can be reduced by suppression of resultant heat shock proteins. Int J Hyperthermia 2018; 34:934-942. [PMID: 29631466 DOI: 10.1080/02656736.2018.1462535] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
PURPOSE To determine the role of hepatic radiofrequency ablation (RFA) heating parameters and their activation of heat shock proteins (HSPs) in modulating distant tumor growth. METHODS AND MATERIALS First, to study the effects of RFA dose on distant tumor growth, rats with subcutaneous R3230 adenocarcinoma (10 ± 1 mm) were assigned to 3 different hepatic RF doses (60 °C × 10 min, 70 °C × 5 min or 90 °C × 2 min) that induced identical sized ablation or sham (n = 6/arm). Post-RFA tumor growth rates, cellular proliferation (Ki-67) and microvascular density (MVD) were compared at 7d. Next, the effect of low and high power doses on local HSP70 expression and cellular infiltration (α-SMA + myofibroblasts and CD68 + macrophages), cytokine (IL-6) and growth factor (HGF and VEGF) expression was assessed. Finally, 60 °C × 10 min and 90 °C × 2 min RFA were combined with anti-HSP micellar quercetin (MicQ, 2 mg/ml). A total of 150 animals were used. RESULTS Lower RF heating (70 °C × 5 min and 60 °C × 10 min) resulted in larger distant tumors at 7d (19.2 ± 0.8 mm for both) while higher RF heating (90 °C × 2) led to less distant tumor growth (16.7 ± 1.5 mm, p < .01 for both), though increased over sham (13.5 ± 0.5 mm, p < .01). Ki-67 and MVD correlated with tumor growth (p < .01 for all). Additionally, lower dose 60 °C × 10 min hepatic RFA had more periablational HSP70 compared to 90 °C × 2 min (rim: 1.106 ± 163 µm vs. 360 ± 18 µm, p < .001), with similar trends for periablational α-SMA, CD68 and CDC47 (p < .01 for all). Anti-HSP70 MicQ blocked distant tumor growth for lower dose (60 °C × 10: RF/MicQ 14.6 ± 0.4 mm vs. RF alone: 18.1 ± 0.4 mm, p < .01) and higher dose RFA (90 °C × 2 min: RF/MicQ 14.6 ± 0.5 mm vs. RF alone: 16.4 ± 0.7 mm, p < .01). CONCLUSION Hepatic RF heating parameters alter periablational HSP70, which can influence and stimulate distant tumor growth. Modulation of RF heating parameters alone or in combination with adjuvant HSP inhibition can reduce unwanted, off-target systemic tumorigenic effects.
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Affiliation(s)
- Muneeb Ahmed
- a Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology , Beth Israel Deaconess Medical Center/Harvard Medical School , Boston , MA , USA
| | - Gaurav Kumar
- a Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology , Beth Israel Deaconess Medical Center/Harvard Medical School , Boston , MA , USA
| | - Svetlana Gourevitch
- b Division of Image-guided Therapy and Interventional Oncology, Department of Radiology , Hadassah Hebrew University Medical Center , Jerusalem , Israel
| | - Tatyana Levchenko
- c Department of Pharmaceutical Sciences, Center for Pharmaceutical Biotechnology and Nanomedicine , Northeastern University , Boston , MA , USA
| | - Eithan Galun
- d Department of Gene Therapy , Hadassah Hebrew University Medical Center , Jerusalem , Israel
| | - Vladimir Torchilin
- c Department of Pharmaceutical Sciences, Center for Pharmaceutical Biotechnology and Nanomedicine , Northeastern University , Boston , MA , USA
| | - S Nahum Goldberg
- a Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology , Beth Israel Deaconess Medical Center/Harvard Medical School , Boston , MA , USA.,b Division of Image-guided Therapy and Interventional Oncology, Department of Radiology , Hadassah Hebrew University Medical Center , Jerusalem , Israel.,d Department of Gene Therapy , Hadassah Hebrew University Medical Center , Jerusalem , Israel
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Kumar G, Goldberg SN, Gourevitch S, Levchenko T, Torchilin V, Galun E, Ahmed M. Targeting STAT3 to Suppress Systemic Pro-Oncogenic Effects from Hepatic Radiofrequency Ablation. Radiology 2017; 286:524-536. [PMID: 28880787 DOI: 10.1148/radiol.2017162943] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Purpose To (a) identify key expressed genes in the periablational rim after radiofrequency ablation (RFA) and their role in driving the stimulation of distant tumor growth and (b) use adjuvant drug therapies to block key identified mediator(s) to suppress off-target tumorigenic effects of hepatic RFA. Materials and Methods This institutional animal care and use committee-approved study was performed in C57BL6 mice (n = 20) and F344 rats (n = 124). First, gene expression analysis was performed in mice after hepatic RFA or sham procedure; mice were sacrificed 24 hours to 7 days after treatment. Data were analyzed for differentially expressed genes (greater than twofold change) and their functional annotations. Next, animals were allocated to hepatic RFA or sham treatment with or without STAT3 (signal transducer and activator of transcription 3) inhibitor S3I-201 for periablational phosphorylated STAT3 immunohistochemistry analysis at 24 hours. Finally, animals with subcutaneous R3230 adenocarcinoma tumors were allocated to RFA or sham treatment with or without a STAT3 inhibitor (S3I-201 or micellar curcumin, eight arms). Outcomes included distant tumor growth, proliferation (Ki-67 percentage), and microvascular density. Results At 24 hours, 217 genes had altered expression (107 upregulated and 110 downregulated), decreasing to 55 genes (27 upregulated and 28 downregulated) and 18 genes (four upregulated, 14 downregulated) at 72 hours and 7 days, respectively. At 24 hours, STAT3 occurred in four of seven activated pathways associated with pro-oncogenic genes at network analysis. Immunohistochemistry analysis confirmed elevated periablational phosphorylated STAT3 24 hours after RFA, which was suppressed with S3I-201 (percentage of positive cells per field: 31.7% ± 3.4 vs 3.8% ± 1.7; P < .001). Combined RFA plus S3I-201 reduced systemic distant tumor growth at 7 days (end diameter: 11.8 mm ± 0.5 with RFA plus S3I-201, 19.8 mm ± 0.7 with RFA alone, and 15 mm ± 0.7 with sham procedure; P < .001). STAT3 inhibition with micellar curcumin also suppressed postablation stimulation of distant tumor growth, proliferation, and microvascular density (P < .01). Conclusion Gene expression analysis identified multiple pathways upregulated in the periablational rim after hepatic RFA, of which STAT3 was active in four of seven. Postablation STAT3 activation is linked to increased distant tumor stimulation and can be suppressed with adjuvant STAT3 inhibitors. © RSNA, 2017.
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Affiliation(s)
- Gaurav Kumar
- From the Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, 1 Deaconess Rd, WCC 308-B, Boston, MA 02215 (G.K., S.N.G., M.A.); Division of Image-guided Therapy and Interventional Oncology, Department of Radiology (S.N.G.), and Goldyne Savad Institute of Gene Therapy (S.G., E.G.), Hadassah Hebrew University Hospital, Jerusalem, Israel; and Department of Pharmaceutical Sciences, Northeastern University, Boston, Mass (T.L., V.T.)
| | - S Nahum Goldberg
- From the Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, 1 Deaconess Rd, WCC 308-B, Boston, MA 02215 (G.K., S.N.G., M.A.); Division of Image-guided Therapy and Interventional Oncology, Department of Radiology (S.N.G.), and Goldyne Savad Institute of Gene Therapy (S.G., E.G.), Hadassah Hebrew University Hospital, Jerusalem, Israel; and Department of Pharmaceutical Sciences, Northeastern University, Boston, Mass (T.L., V.T.)
| | - Svetlana Gourevitch
- From the Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, 1 Deaconess Rd, WCC 308-B, Boston, MA 02215 (G.K., S.N.G., M.A.); Division of Image-guided Therapy and Interventional Oncology, Department of Radiology (S.N.G.), and Goldyne Savad Institute of Gene Therapy (S.G., E.G.), Hadassah Hebrew University Hospital, Jerusalem, Israel; and Department of Pharmaceutical Sciences, Northeastern University, Boston, Mass (T.L., V.T.)
| | - Tatyana Levchenko
- From the Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, 1 Deaconess Rd, WCC 308-B, Boston, MA 02215 (G.K., S.N.G., M.A.); Division of Image-guided Therapy and Interventional Oncology, Department of Radiology (S.N.G.), and Goldyne Savad Institute of Gene Therapy (S.G., E.G.), Hadassah Hebrew University Hospital, Jerusalem, Israel; and Department of Pharmaceutical Sciences, Northeastern University, Boston, Mass (T.L., V.T.)
| | - Vladimir Torchilin
- From the Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, 1 Deaconess Rd, WCC 308-B, Boston, MA 02215 (G.K., S.N.G., M.A.); Division of Image-guided Therapy and Interventional Oncology, Department of Radiology (S.N.G.), and Goldyne Savad Institute of Gene Therapy (S.G., E.G.), Hadassah Hebrew University Hospital, Jerusalem, Israel; and Department of Pharmaceutical Sciences, Northeastern University, Boston, Mass (T.L., V.T.)
| | - Eithan Galun
- From the Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, 1 Deaconess Rd, WCC 308-B, Boston, MA 02215 (G.K., S.N.G., M.A.); Division of Image-guided Therapy and Interventional Oncology, Department of Radiology (S.N.G.), and Goldyne Savad Institute of Gene Therapy (S.G., E.G.), Hadassah Hebrew University Hospital, Jerusalem, Israel; and Department of Pharmaceutical Sciences, Northeastern University, Boston, Mass (T.L., V.T.)
| | - Muneeb Ahmed
- From the Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, 1 Deaconess Rd, WCC 308-B, Boston, MA 02215 (G.K., S.N.G., M.A.); Division of Image-guided Therapy and Interventional Oncology, Department of Radiology (S.N.G.), and Goldyne Savad Institute of Gene Therapy (S.G., E.G.), Hadassah Hebrew University Hospital, Jerusalem, Israel; and Department of Pharmaceutical Sciences, Northeastern University, Boston, Mass (T.L., V.T.)
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Moussa M, Goldberg SN, Kumar G, Levchenko T, Torchilin V, Ahmed M. Effect of thermal dose on heat shock protein expression after radio-frequency ablation with and without adjuvant nanoparticle chemotherapies. Int J Hyperthermia 2016; 32:829-841. [PMID: 27600101 DOI: 10.3109/02656736.2016.1164904] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
PURPOSE The aim of this study was to evaluate the effect of different radio-frequency ablation (RFA) thermal doses on coagulation and heat shock protein (HSP) response with and without adjuvant nanotherapies. MATERIALS AND METHODS First, Fischer rats were assigned to nine different thermal doses of hepatic RFA (50-90 °C, 2-20 min, three per group) or no treatment (n = 3). Next, five of these RF thermal doses were combined with liposomal-doxorubicin (Lipo-Dox, 1 mg intravenously) in R3230 breast tumours, or no tumour treatment (five per group). Finally, RFA/Lipo-Dox was given without and with an Hsp70 inhibitor, micellar quercetin (Mic-Qu, 0.3 mg intravenously) for two different RFA doses with similar coagulation but differing peri-ablational Hsp70 (RFA/Lipo-Dox at 70 °C × 5 min and 90 °C × 2 min, single tumours, five per group). All animals were sacrificed 24 h post-RFA and gross tissue coagulation and Hsp70 (maximum rim thickness and % cell positivity) were correlated to thermal dose including cumulative equivalent minutes at 43 °C (CEM43). RESULTS Incremental increases in thermal dose (CEM43) correlated to increasing liver tissue coagulation (R2 = 0.7), but not with peri-ablational Hsp70 expression (R2 = 0.14). Similarly, increasing thermal dose correlated to increasing R3230 tumour coagulation for RF alone and RFA/Lipo-Dox (R2 = 0.7 for both). The addition of Lipo-Dox better correlated to increasing Hsp70 expression compared to RFA alone (RFA: R2 = 0.4, RFA/Lipo-Dox: R2 = 0.7). Finally, addition of Mic-Qu to two thermal doses combined with Lipo-Dox resulted in greater tumour coagulation (p < 0.0003) for RFA at 90 °C × 2 min (i.e. greater baseline Hsp70 expression) than an RFA dose that produced similar coagulation but less HSP expression (p < 0.0004). CONCLUSION Adjuvant intravenous Lipo-Dox increases peri-ablational Hsp70 expression in a thermally dependent manner. Such expression can be exploited to produce greater tumour destruction when adding a second adjuvant nanodrug (Mic-Qu) to suppress peri-ablational HSP expression.
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Affiliation(s)
- Marwan Moussa
- a Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology , Beth Israel Deaconess Medical Center/Harvard Medical School , Boston , Massachusetts , USA
| | - S Nahum Goldberg
- a Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology , Beth Israel Deaconess Medical Center/Harvard Medical School , Boston , Massachusetts , USA.,b Division of Image-Guided Therapy and Interventional Oncology, Department of Radiology , Hadassah Hebrew University Medical Center , Jerusalem , Israel
| | - Gaurav Kumar
- a Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology , Beth Israel Deaconess Medical Center/Harvard Medical School , Boston , Massachusetts , USA
| | - Tatyana Levchenko
- c Department of Pharmaceutical Sciences and Center for Pharmaceutical Biotechnology and Nanomedicine , Northeastern University , Boston , Massachusetts , USA
| | - Vladimir Torchilin
- c Department of Pharmaceutical Sciences and Center for Pharmaceutical Biotechnology and Nanomedicine , Northeastern University , Boston , Massachusetts , USA
| | - Muneeb Ahmed
- a Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology , Beth Israel Deaconess Medical Center/Harvard Medical School , Boston , Massachusetts , USA
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Mussi SV, Parekh G, Pattekari P, Levchenko T, Lvov Y, Ferreira LAM, Torchilin VP. Improved pharmacokinetics and enhanced tumor growth inhibition using a nanostructured lipid carrier loaded with doxorubicin and modified with a layer-by-layer polyelectrolyte coating. Int J Pharm 2015; 495:186-193. [PMID: 26325314 DOI: 10.1016/j.ijpharm.2015.08.079] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 08/16/2015] [Accepted: 08/25/2015] [Indexed: 11/24/2022]
Abstract
A nanostructured lipid carrier (NLC) loaded with doxorubicin (DOX) has been shown to be cytotoxic against the human cancer cell lines A549 and MCF-7/Adr. In attempts to improve formulation characteristics, enhance pharmacokinetics and antitumor effects, we modified the surface of these NLC with an alternating layer-by-layer (LbL) assembly of polycation and polyanion polyelectrolytes and an additional coating with PEG using a simple method of core shell attachment. The formulation had a narrow size distribution, longer residence in the blood, lower accumulation in the liver, higher accumulation in tumors and a significant tumor growth inhibition effect. Thus, NLC-DOX nanopreparations complexes modified by LbL coating have the potential to enhance the anticancer effects of DOX against tumors.
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Affiliation(s)
- Samuel V Mussi
- Center for Pharmaceutical Biotechnology and Nanomedicine, 360 Huntington Avenue, 140 The Fenway, Northeastern University, Boston, MA 02115, USA
| | - Gaurav Parekh
- Institute for Micromanufacturing, Louisiana Tech University, Ruston, LA, USA
| | - Pravin Pattekari
- Institute for Micromanufacturing, Louisiana Tech University, Ruston, LA, USA
| | - Tatyana Levchenko
- Center for Pharmaceutical Biotechnology and Nanomedicine, 360 Huntington Avenue, 140 The Fenway, Northeastern University, Boston, MA 02115, USA
| | - Yuri Lvov
- Institute for Micromanufacturing, Louisiana Tech University, Ruston, LA, USA
| | - Lucas A M Ferreira
- Department of Pharmaceutics, Faculty of Pharmacy, Federal University of Minas Gerais (UFMG), Av Antônio Carlos, 6627, Campus Pampulha, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Vladimir P Torchilin
- Center for Pharmaceutical Biotechnology and Nanomedicine, 360 Huntington Avenue, 140 The Fenway, Northeastern University, Boston, MA 02115, USA; Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
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Ahmed M, Kumar G, Navarro G, Wang Y, Gourevitch S, Moussa MH, Rozenblum N, Levchenko T, Galun E, Torchilin VP, Goldberg SN. Systemic siRNA Nanoparticle-Based Drugs Combined with Radiofrequency Ablation for Cancer Therapy. PLoS One 2015; 10:e0128910. [PMID: 26154425 PMCID: PMC4495977 DOI: 10.1371/journal.pone.0128910] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 05/01/2015] [Indexed: 01/10/2023] Open
Abstract
PURPOSE Radiofrequency thermal ablation (RFA) of hepatic and renal tumors can be accompanied by non-desired tumorigenesis in residual, untreated tumor. Here, we studied the use of micelle-encapsulated siRNA to suppress IL-6-mediated local and systemic secondary effects of RFA. METHODS We compared standardized hepatic or renal RFA (laparotomy, 1 cm active tip at 70 ± 2 °C for 5 min) and sham procedures without and with administration of 150 nm micelle-like nanoparticle (MNP) anti-IL6 siRNA (DOPE-PEI conjugates, single IP dose 15 min post-RFA, C57Bl mouse:3.5 ug/100ml, Fisher 344 rat: 20 ug/200 ul), RFA/scrambled siRNA, and RFA/empty MNPs. Outcome measures included: local periablational cellular infiltration (α-SMA+ stellate cells), regional hepatocyte proliferation, serum/tissue IL-6 and VEGF levels at 6-72 hr, and distant tumor growth, tumor proliferation (Ki-67) and microvascular density (MVD, CD34) in subcutaneous R3230 and MATBIII breast adenocarcinoma models at 7 days. RESULTS For liver RFA, adjuvant MNP anti-IL6 siRNA reduced RFA-induced increases in tissue IL-6 levels, α-SMA+ stellate cell infiltration, and regional hepatocyte proliferation to baseline (p < 0.04, all comparisons). Moreover, adjuvant MNP anti-IL6- siRNA suppressed increased distant tumor growth and Ki-67 observed in R3230 and MATBIII tumors post hepatic RFA (p<0.01). Anti-IL6 siRNA also reduced RFA-induced elevation in VEGF and tumor MVD (p < 0.01). Likewise, renal RFA-induced increases in serum IL-6 levels and distant R3230 tumor growth was suppressed with anti-IL6 siRNA (p < 0.01). CONCLUSIONS Adjuvant nanoparticle-encapsulated siRNA against IL-6 can be used to modulate local and regional effects of hepatic RFA to block potential unwanted pro-oncogenic effects of hepatic or renal RFA on distant tumor.
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Affiliation(s)
- Muneeb Ahmed
- Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, 1 Deaconess Rd.–WCC-308B, Boston, Massachusetts, 02215, United States of America
- * E-mail:
| | - Gaurav Kumar
- Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, 1 Deaconess Rd.–WCC-308B, Boston, Massachusetts, 02215, United States of America
| | - Gemma Navarro
- Department of Pharmaceutical Sciences and Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, 140 The Fenway, Boston, Massachusetts, 02115, United States of America
| | - Yuanguo Wang
- Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, 1 Deaconess Rd.–WCC-308B, Boston, Massachusetts, 02215, United States of America
| | - Svetlana Gourevitch
- The Goldyne Savad Institute of Gene Therapy, Hadassah Hebrew University Medical Center, Kiryat Hadassah POB 12000, Jerusalem, 91120, Israel
| | - Marwan H. Moussa
- Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, 1 Deaconess Rd.–WCC-308B, Boston, Massachusetts, 02215, United States of America
| | - Nir Rozenblum
- The Goldyne Savad Institute of Gene Therapy, Hadassah Hebrew University Medical Center, Kiryat Hadassah POB 12000, Jerusalem, 91120, Israel
| | - Tatyana Levchenko
- Department of Pharmaceutical Sciences and Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, 140 The Fenway, Boston, Massachusetts, 02115, United States of America
| | - Eithan Galun
- The Goldyne Savad Institute of Gene Therapy, Hadassah Hebrew University Medical Center, Kiryat Hadassah POB 12000, Jerusalem, 91120, Israel
| | - Vladimir P. Torchilin
- Department of Pharmaceutical Sciences and Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, 140 The Fenway, Boston, Massachusetts, 02115, United States of America
| | - S. Nahum Goldberg
- Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, 1 Deaconess Rd.–WCC-308B, Boston, Massachusetts, 02215, United States of America
- Division of Image-guided Therapy and Interventional Oncology, Department of Radiology, Hadassah Hebrew University Medical Center, Kiryat Hadassah POB 12000, Jerusalem, 91120, Israel
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Parekh G, Pattekari P, Joshi C, Shutava T, DeCoster M, Levchenko T, Torchilin V, Lvov Y. Layer-by-layer nanoencapsulation of camptothecin with improved activity. Int J Pharm 2014; 465:218-27. [PMID: 24508806 PMCID: PMC4015802 DOI: 10.1016/j.ijpharm.2014.01.041] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 12/27/2013] [Accepted: 01/29/2014] [Indexed: 11/23/2022]
Abstract
160 nm nanocapsules containing up to 60% of camptothecin in the core and 7-8 polyelectrolyte bilayers in the shell were produced by washless layer-by-layer assembly of heparin and block-copolymer of poly-l-lysine and polyethylene glycol. The outer surface of the nanocapsules was additionally modified with polyethylene glycol of 5 kDa or 20 kDa molecular weight to attain protein resistant properties, colloidal stability in serum and prolonged release of the drug from the capsules. An advantage of the LbL coated capsules is the preservation of camptothecin lactone form with the shell assembly starting at acidic pH and improved chemical stability of encapsulated drug at neutral and basic pH, especially in the presence of albumin that makes such formulation more active than free camptothecin. LbL nanocapsules preserve the camptothecin lactone form at pH 7.4 resulting in triple activity of the drug toward CRL2303 glioblastoma cell.
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Affiliation(s)
- Gaurav Parekh
- Institute for Micromanufacturing and Biomedical Engineering Program, Louisiana Tech University, USA
| | - Pravin Pattekari
- Institute for Micromanufacturing and Biomedical Engineering Program, Louisiana Tech University, USA
| | - Chaitanya Joshi
- Institute for Micromanufacturing and Biomedical Engineering Program, Louisiana Tech University, USA
| | - Tatsiana Shutava
- Institute for Micromanufacturing and Biomedical Engineering Program, Louisiana Tech University, USA
| | - Mark DeCoster
- Institute for Micromanufacturing and Biomedical Engineering Program, Louisiana Tech University, USA
| | - Tatyana Levchenko
- Department of Pharmaceutical Sciences, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Vladimir Torchilin
- Department of Pharmaceutical Sciences, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Yuri Lvov
- Institute for Micromanufacturing and Biomedical Engineering Program, Louisiana Tech University, USA.
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Moussa M, Goldberg SN, Tasawwar B, Sawant RR, Levchenko T, Kumar G, Torchilin VP, Ahmed M. Adjuvant liposomal doxorubicin markedly affects radiofrequency ablation-induced effects on periablational microvasculature. J Vasc Interv Radiol 2013; 24:1021-33. [PMID: 23664809 DOI: 10.1016/j.jvir.2013.03.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Revised: 03/05/2013] [Accepted: 03/06/2013] [Indexed: 11/17/2022] Open
Abstract
PURPOSE To evaluate the effects of radiofrequency (RF) ablation without and with adjuvant intravenous (IV) liposomal doxorubicin (Doxil) on microvessel morphology and patency and intratumoral drug delivery and retention. MATERIALS AND METHODS There were 133 tumors/animals used in this experiment. First, single subcutaneous tumors (R3230 in Fischer rats and 786-0 in nude mice) were randomly assigned to receive RF ablation alone or no treatment and sacrificed 0-72 hours after treatment. Next, combined RF ablation and liposomal doxorubicin (1 mg given 15 min after RF ablation) was studied in R3230 tumors at 0-72 hours after treatment. Histopathologic assessment, including immunohistochemical staining for cleaved caspase-3, heat-shock protein 70, and CD34, was performed to assess morphologic vessel appearance, vessel diameter, and microvascular density. Subsequently, tumors were randomly assigned to receive RF ablation alone, RF ablation and liposomal doxorubicin, or no treatment (control tumors), followed by IV fluorescent-labeled liposomes (a surrogate marker) given 0-24 hours after RF ablation to permit qualitative assessment. RESULTS RF ablation alone resulted in enlarged and dysmorphic vessels from 0-4 hours, peaking at 12-24 hours after RF ablation, occurring preferentially closer to the electrode. The addition of doxorubicin resulted in earlier vessel contraction (mean vessel area, 47,539 μm(2)±9,544 vs 1,854 μm(2)±458 for RF ablation alone at 15 min; P<.05). Combined RF ablation and liposomal doxorubicin produced similar fluorescence 1 hour after treatment (40.88 AU/μm(2)±33.53 vs 22.1 AU/μm(2)±13.19; P = .14) but significantly less fluorescence at 4 hours (24.3 AU/μm(2)±3.65 vs 2.8 AU/μm(2)±3.14; P<.002) compared with RF ablation alone denoting earlier reduction in microvascular patency. CONCLUSIONS RF ablation induces morphologic changes to vessels within the ablation zone lasting 12-24 hours after treatment. The addition of liposomal doxorubicin causes early vessel contraction and a reduction in periablational microvascular patency. Such changes would likely need to be considered when determining optimal drug administration and imaging paradigms.
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Affiliation(s)
- Marwan Moussa
- Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, MA 02215, USA
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Sarisozen C, Vural I, Levchenko T, Hincal AA, Torchilin VP. Long-circulating PEG-PE micelles co-loaded with paclitaxel and elacridar (GG918) overcome multidrug resistance. Drug Deliv 2012; 19:363-70. [DOI: 10.3109/10717544.2012.724473] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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Sarisozen C, Vural I, Levchenko T, Hincal AA, Torchilin VP. PEG-PE-based micelles co-loaded with paclitaxel and cyclosporine A or loaded with paclitaxel and targeted by anticancer antibody overcome drug resistance in cancer cells. Drug Deliv 2012; 19:169-76. [DOI: 10.3109/10717544.2012.674163] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yang W, Ahmed M, Tasawwar B, Levchenko T, Sawant RR, Collins M, Signoretti S, Torchilin V, Goldberg SN. Radiofrequency ablation combined with liposomal quercetin to increase tumour destruction by modulation of heat shock protein production in a small animal model. Int J Hyperthermia 2011; 27:527-38. [PMID: 21846189 DOI: 10.3109/02656736.2011.582474] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
PURPOSE To investigate the effect of heat shock protein (HSP) modulation on tumour coagulation by combining radiofrequency (RF) ablation with adjuvant liposomal quercetin and/or doxorubicin in a rat tumour model. METHODS Sixty R3230 breast adenocarcinoma tumours/animals were used in this IACUC-approved study. Initially, 60 tumours (n=6, each subgroup) were randomised into five groups: (1) RF alone, (2) intravenous (IV) liposomal quercetin alone (1 mg/kg), (3) IV liposomal quercetin followed 24 h later with RF, (4) RF followed 15 min later by IV liposomal doxorubicin (8 mg/kg), (5) IV liposomal quercetin 24 h before RF followed by IV liposomal doxorubicin 15 min post-ablation. Animals were sacrificed 4 or 24 h post-treatment and gross coagulation diameters were compared. Next, immunohistochemistry staining was performed for Hsp70 and cleaved caspase-3 expression. Comparisons were performed by using Student t-tests or ANOVA. RESULTS Combination RF-quercetin significantly increased coagulation size compared with either RF or liposomal quercetin alone (13.1±0.7 mm vs. 8.8±1.2 mm or 2.3±1.3 mm, respectively, P<0.001 for all comparisons). Triple therapy (quercetin-RF-doxorubicin) showed larger coagulation diameter (14.5±1.0 mm) at 24 h than quercetin-RF (P=0.016) or RF-doxorubicin (13.2±1.3 mm, P=0.042). Combination quercetin-RF decreased Hsp70 expression compared with RF alone at both 4 h (percentage of stained cells/hpf 22.4±13.9% vs. 38.8±16.1%, P<0.03) and 24 h (45.2±10.5% vs. 81.1±3.6%, P<0.001). Quercetin-RF increased cleaved caspase-3 expression at both 4 h (percentage of stained cells/hpf 50.7±13.4% vs. 41.9±15.1%, P<0.03) and 24 h (37.4±7.8% vs. 33.2±6.5%, P=0.045); with, triple therapy (quercetin-RF-doxorubicin) resulting in the highest levels of apoptosis (45.1±10.7%) at 24 h. Similar trends were observed for rim thickness. CONCLUSIONS Suppression of HSP production using adjuvant liposomal quercetin can increase apoptosis and improve RF ablation-induced tumour destruction. Further increases in tumour coagulation can be seen including an additional anti-tumour adjuvant agent such as liposomal doxorubicin.
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Affiliation(s)
- Wei Yang
- Minimally Invasive Tumor Therapies Laboratory, Department of Radiology, Beth Israel Deaconess Medical Center/Harvard Medical School, 1 Deaconess Road, Boston, MA 02215, USA
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Pattekari P, Zheng Z, Zhang X, Levchenko T, Torchilin V, Lvov Y. Top-down and bottom-up approaches in production of aqueous nanocolloids of low solubility drug paclitaxel. Phys Chem Chem Phys 2011; 13:9014-9. [PMID: 21442095 PMCID: PMC4378541 DOI: 10.1039/c0cp02549f] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nano-encapsulation of a poorly soluble anticancer drug was demonstrated with a sonication assisted layer-by-layer polyelectrolyte coating (SLbL). We changed the strategy of LbL-encapsulation from making microcapsules with many layers in the walls for encasing highly soluble materials to using a very thin polycation/polyanion coating on low solubility nanoparticles to provide them with good colloidal stability. SLbL encapsulation of paclitaxel resulted in stable 100-200 nm diameter colloids with a high electrical surface ξ-potential (of -45 mV) and drug content in the nanoparticles of 90 wt%. In the top-down approach, nanocolloids were prepared by rupturing a powder of paclitaxel using ultrasonication and simultaneous sequential adsorption of oppositely charged biocompatible polyelectrolytes. In the bottom-up approach paclitaxel was dissolved in organic solvent (ethanol or acetone), and drug nucleation was initiated by the addition of aqueous polyelectrolyte assisted by ultrasonication. Paclitaxel release rates from such nanocapsules were controlled by assembling multilayer shells with variable thicknesses and were in the range of 10-20 h.
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Affiliation(s)
- P. Pattekari
- Institute for Micro manufacturing, Chemistry Dep., Louisiana Tech University, Ruston LA 71272. Fax: XX XXXX XXXX; Tel: XX XXXX XXXX
| | - Z. Zheng
- Institute for Micro manufacturing, Chemistry Dep., Louisiana Tech University, Ruston LA 71272. Fax: XX XXXX XXXX; Tel: XX XXXX XXXX
| | - X. Zhang
- Institute for Micro manufacturing, Chemistry Dep., Louisiana Tech University, Ruston LA 71272. Fax: XX XXXX XXXX; Tel: XX XXXX XXXX
| | - T. Levchenko
- Department of Pharmaceutical Sciences and Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, Boston, MA 02115
| | - V. Torchilin
- Department of Pharmaceutical Sciences and Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, Boston, MA 02115
| | - Y. Lvov
- Institute for Micro manufacturing, Chemistry Dep., Louisiana Tech University, Ruston LA 71272. Fax: XX XXXX XXXX; Tel: XX XXXX XXXX
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Tirabassi RS, Ace CI, Levchenko T, Torchilin VP, Selin LK, Nie S, Guberski DL, Yang K. A mucosal vaccination approach for herpes simplex virus type 2. Vaccine 2010; 29:1090-8. [PMID: 21134447 DOI: 10.1016/j.vaccine.2010.11.076] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Revised: 11/09/2010] [Accepted: 11/20/2010] [Indexed: 11/15/2022]
Abstract
An estimated 1 out of every 5 Americans is infected with herpes simplex virus type 2 (HSV-2). Efforts in developing a potent vaccine for HSV-2 have shown limited success. Here we describe a heterologous vaccination strategy for HSV-2 based on an intramuscular DNA prime followed by a liposome-encapsulated antigen boost delivered intranasally. Both portions of the vaccine express the immunogenic HSV-2 glycoprotein D. In female Balb/c mice, this heterologous immunisation regimen stimulated high titers of serum neutralising antibodies, a DNA priming dose dependent T helper type response, enhanced mucosal immune responses and potent protective immunity at the portal of entry for the virus: the vaginal cavity. A clear synergistic effect on immune responses and protection from infection was seen using this heterologous immunisation approach. Suboptimal DNA prime (0.5 μg) followed by the liposome boost resulted in an 80% survival rate when mice were infected 2 weeks after immunisation. A higher dose of DNA priming (5 μg) followed by the liposome boost resulted in sterilising immunity in 80% of mice. The vaccine induced durable protection in mice, demonstrated by a 60% survival rate when lethal infections were performed 20 weeks after the immunisation primed with 0.5 μg of DNA vaccine.
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Affiliation(s)
- Rebecca S Tirabassi
- Biomedical Research Models, Inc., 67 Millbrook Street, Suite 422, Worcester, MA 01606, USA
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Papagiannaros A, Upponi J, Hartner W, Mongayt D, Levchenko T, Torchilin V. Quantum dot loaded immunomicelles for tumor imaging. BMC Med Imaging 2010; 10:22. [PMID: 20955559 PMCID: PMC2975645 DOI: 10.1186/1471-2342-10-22] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Accepted: 10/18/2010] [Indexed: 01/23/2023] Open
Abstract
Background Optical imaging is a promising method for the detection of tumors in animals, with speed and minimal invasiveness. We have previously developed a lipid coated quantum dot system that doubles the fluorescence of PEG-grafted quantum dots at half the dose. Here, we describe a tumor-targeted near infrared imaging agent composed of cancer-specific monoclonal anti-nucleosome antibody 2C5, coupled to quantum dot (QD)-containing polymeric micelles, prepared from a polyethylene glycol/phosphatidylethanolamine (PEG-PE) conjugate. Its production is simple and involves no special equipment. Its imaging potential is great since the fluorescence intensity in the tumor is twofold that of non-targeted QD-loaded PEG-PE micelles at one hour after injection. Methods Para-nitrophenol-containing (5%) PEG-PE quantum dot micelles were produced by the thin layer method. Following hydration, 2C5 antibody was attached to the PEG-PE micelles and the QD-micelles were purified using dialysis. 4T1 breast tumors were inoculated subcutaneously in the flank of the animals. A lung pseudometastatic B16F10 melanoma model was developed using tail vein injection. The contrast agents were injected via the tail vein and mice were depilated, anesthetized and imaged on a Kodak Image Station. Images were taken at one, two, and four hours and analyzed using a methodology that produces normalized signal-to-noise data. This allowed for the comparison between different subjects and time points. For the pseudometastatic model, lungs were removed and imaged ex vivo at one and twenty four hours. Results The contrast agent signal intensity at the tumor was double that of the passively targeted QD-micelles with equally fast and sharply contrasted images. With the side views of the animals only tumor is visible, while in the dorsal view internal organs including liver and kidney are visible. Ex vivo results demonstrated that the agent detects melanoma nodes in a lung pseudometastatic model after a 24 hours wash-out period, while at one hour, only a uniform signal is detected. Conclusions The targeted agent produces ultrabright tumor images and double the fluorescence intensity, as rapidly and at the same low dose as the passively targeted agents. It represents a development that may potentially serve to enhance early detection for metastases.
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Affiliation(s)
- Aristarchos Papagiannaros
- Department of Pharmaceutical Sciences and Center for Pharmaceutical Biotechnology and Nanomedicine, 312 Mugar Life Sciences Building, Northeastern University, Boston, MA 02115, USA
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Solazzo SA, Ahmed M, Schor-Bardach R, Yang W, Girnun GD, Rahmanuddin S, Levchenko T, Signoretti S, Spitz DR, Torchilin V, Goldberg SN. Liposomal doxorubicin increases radiofrequency ablation-induced tumor destruction by increasing cellular oxidative and nitrative stress and accelerating apoptotic pathways. Radiology 2010; 255:62-74. [PMID: 20160000 DOI: 10.1148/radiol.09091196] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE To determine if oxidative and nitrative stress and/or apoptosis contribute to increased coagulation when combining radiofrequency (RF) ablation with liposomal doxorubicin. MATERIALS AND METHODS Animal care committee approval was obtained. R3230 mammary adenocarcinomas in Fischer rats were treated with either RF ablation (n = 43), 1 mg of intravenously injected liposomal doxorubicin (n = 26), or combined therapy (n = 30) and were compared with control subjects (n = 11). A subset of animals receiving combination therapy (n = 24) were treated in the presence or absence of N-acetylcysteine (NAC) administered 24 hours and 1 hour before RF ablation. Tumors were analyzed 2 minutes to 72 hours after treatment to determine the temporal range of response by using immunohistochemical staining of the apoptosis marker cleaved caspase-3, phosphorylated gammaH2AX, and HSP70 and of markers of oxidative and nitrative stress (8-hydroxydeoxyguanosine [8-OHdG], 4-hydroxynonenal [4-HNE]-modified proteins, and nitrotyrosine [NT]). Statistical analyses, including t tests and analysis of variance for comparisons where appropriate, were performed. RESULTS By 4 hours after RF ablation alone, a 0.48-mm +/- 0.13 (standard deviation) peripheral band with 57.0% +/- 7.3 cleaved caspase-3 positive cells was noted at the ablation margin, whereas a 0.73-mm +/- 0.18 band with 77.7% +/- 6.3 positivity was seen for combination therapy (P < .03 for both comparisons). Combination therapy caused increased and earlier staining for 4-HNE-modified proteins, 8-OHdG, NT, and gammaH2AX with colocalization to cleaved caspase-3 staining. A rim of increased HSP70 was identified peripheral to the area of cleaved caspase-3. Parameters of oxidative and nitrative stress were significantly inhibited by NAC 1 hour following RF ablation, resulting in decreased cleaved caspase-3 positivity (0.28-mm +/- 0.09 band of 25.9% +/- 7.4 positivity vs 0.59-mm +/- 0.11 band of 62.9% +/- 6.0 positivity, P < .001 for both comparisons). CONCLUSION Combining RF ablation with liposomal doxorubicin increases cell injury and apoptosis in the zone of increased coagulation by using a mechanism that involves oxidative and nitrative stress that leads to accelerated apoptosis.
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Affiliation(s)
- Stephanie A Solazzo
- Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Ave, Boston, MA 02215, USA
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Papagiannaros A, Levchenko T, Hartner W, Mongayt D, Torchilin V. Quantum dots encapsulated in phospholipid micelles for imaging and quantification of tumors in the near-infrared region. Nanomedicine: Nanotechnology, Biology and Medicine 2009; 5:216-24. [DOI: 10.1016/j.nano.2008.10.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2008] [Revised: 09/12/2008] [Accepted: 10/14/2008] [Indexed: 10/21/2022]
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Verma D, Hartner W, Levchenko T, Torchilin V. Coenzyme Q10-loaded liposomes effectively protect the myocardium in rabbits with an acute experimental myocardial infarction. J Mol Cell Cardiol 2007. [DOI: 10.1016/j.yjmcc.2007.03.648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
The application of ATP-loaded liposomes has been shown effective against ischemic damage in several tissues. In this study, we have prepared ATP-containing liposomes capable of specific recognition of component (myosin) specific for ischemic myocardium. ATP-containing immunoliposomes specific towards cardiac myosin were obtained by the attachment of the monoclonal anti-cardiac myosin 2G4 antibody to the surface of ATP-containing PEGylated liposomes prepared by the freezing-thawing method. Since intracellular myosin is exposed only in the areas containing ischemically compromised cells with damaged plasmic membranes, such liposomes are expected to target these areas both in vitro and in vivo. The attachment of the antibody did not provoke their ATP release from the liposomes and only minimally influenced liposome size and size distribution. Liposome-attached anti-myosin 2G4 antibody preserved its specific activity; and anti-myosin antibody-bearing, ATP-loaded liposomes bound efficiently to the monolayer of myosin in ELISA. The preparation of myosin-specific ATP-loaded immunoliposomes represented an important step in the development of targeted delivery systems capable of providing energy support to ischemic myocardium in vivo.
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Affiliation(s)
- Wei Liang
- Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston, MA 02115, USA
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Mu L, Chrastina A, Levchenko T, Torchilin VP. Micelles from Poly(ethylene glycol)–Phosphatidyl Ethanolamine Conjugates (Peg-Pe) as Pharmaceutical Nanocarriers for Poorly Soluble Drug Camptothecin. J Biomed Nanotechnol 2005. [DOI: 10.1166/jbn.2005.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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