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Kong Y, Liu J, Jiang H, Song L, Kong D, Wang Z, Leng X. Immunogenicity assessment of swim bladder-derived biomaterials. Biomater Sci 2023; 11:2738-2749. [PMID: 36807688 DOI: 10.1039/d2bm01419j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Fish swim bladder-derived biomaterials are prospective cardiovascular materials due to anti-calcification, adequate mechanical properties, and good biocompatibility. However, their immunogenic safety profile, which primarily determines their feasibility as medical devices in clinical practice, remains unknown. Herein, the immunogenicity of glutaraldehyde crosslinked fish swim bladder (Bladder-GA) and un-crosslinked swim bladder (Bladder-UN) samples was examined using in vitro and in vivo assays according to ISO 10993-20. The in vitro splenocyte proliferation assay showed that cell growth was lower in the extract medium of Bladder-UN and Bladder-GA, compared to the LPS-or Con A-treated group. Similar results were obtained in in vivo assays. In the subcutaneous implantation model, the thymus coefficient, spleen coefficient and ratio of immune cell subtypes showed no significant difference between the bladder groups and the sham group. In terms of the humoral immune response, the total IgM concentration was lower in the Bladder-GA and Bladder-UN groups (988 ± 238 μg ml-1 and 1095 ± 296 μg ml-1, respectively) than that in the sham group (1329 ± 132 μg ml-1) at 7 days. The total IgG concentrations were 422 ± 78 μg ml-1 in Bladder-GA and 469 ± 172 μg ml-1 in Bladder-UN at 30 days, which were slightly higher than that in the sham group (276 ± 95 μg ml-1) but there was no significant difference compared with Bovine-GA (468 ± 172 μg ml-1), indicating that these materials did not elicit a strong humoral immune response. Systemic immune response-related cytokines and C-reactive protein were stable during implantation, while IL-4 levels increased with time. The classical foreign body response was not observed around all the implants, and the ratio of CD163+/iNOS macrophages in Bladder-GA and Bladder-UN was higher than that in the Bovine-GA group at the implanted site at 7 and 30 days. Finally, no organ toxicity was observed in any of the groups. Collectively, the swim bladder-derived material did not elicit significant aberrant immune responses in vivo, giving strong confidence for its application in tissue engineering or medical devices. Furthermore, more dedicated research on immunogenic safety assessment in large animal models is encouraged to facilitate the clinical practice of swim bladder-derived materials.
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Affiliation(s)
- Yuanyuan Kong
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China.
| | - Jing Liu
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China.
| | - Honghui Jiang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China.
| | - Lili Song
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China. .,College of Life Sciences, Tiangong University, Tianjin 300387, China
| | - Deling Kong
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China. .,Key Laboratory of Bioactive Materials of Ministry of Education, State Key Laboratory of Medicinal Chemical Biology, College of Life Science, Nankai University, Tianjin 300071, China
| | - Zhihong Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China.
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Leng X, Leszczynski P, Jeka S, Liu S, Liu H, Miakisz M, Gu J, Kilasonia L, Stanislavchuk M, Yang X, Zhou Y, Dong Q, Mitroiu M, Addison J, Zeng X. POS0287 A PHASE III, RANDOMISED, DOUBLE-BLIND, ACTIVE-CONTROLLED CLINICAL TRIAL TO COMPARE BAT1806/BIIB800, A PROPOSED TOCILIZUMAB BIOSIMILAR, WITH TOCILIZUMAB REFERENCE PRODUCT IN SUBJECTS WITH MODERATE TO SEVERE RHEUMATOID ARTHRITIS WITH AN INADEQUATE RESPONSE TO METHOTREXATE THERAPY. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundBAT1806/BIIB800 is a proposed biosimilar to reference tocilizumab (TCZ). A Phase III randomised, double-blind, active-controlled clinical trial was conducted as part of a biosimilar development programme.ObjectivesTo evaluate the efficacy, pharmacokinetics (PK), safety and immunogenicity of BAT1806/BIIB800 in comparison with EU-sourced TCZ in subjects with moderate to severe rheumatoid arthritis with inadequate response to methotrexate (MTX).MethodsThe study was conducted at 55 centres in China and Europe, between June 2018 and January 2021. Eligible subjects were randomised in a 2:1:1 ratio to one of three treatment groups: (1) BAT1806/BIIB800 up to Week 48, (2) TCZ up to Week 48, or (3) TCZ up to Week 24, followed by BAT1806/BIIB800 from Week 24 to Week 48, administered intravenously every 4 weeks at a dose of 8mg/kg. The primary endpoint was the proportion of subjects achieving an ACR20 response at timepoints pre-specified to meet the requirements of different Regulatory Agencies: Week 12, for EMA; Week 24, for FDA and NMPA. Equivalence margins applied to differences in ACR20 response rates in the BAT1806/BIIB800 and TCZ treatment groups were pre-specified as follows: +/- 14.5% for EMA (95% confidence interval (CI)); -12.0%,15% for FDA (90% CI); +/- 13.6% for NMPA (95% CI). Secondary endpoints included pharmacokinetics, safety and immunogenicity.The ICH E9(R1) estimands framework including intercurrent events (related or unrelated to the COVID19 pandemic) was implemented for the ACR20 evaluation. A logistic regression model including ‘region’ (China and Eastern Europe) and ‘previous biologic or targeted synthetic DMARD use’ (Yes/No) as captured in Interactive Web Response System as stratification factors was utilised to assess equivalence for the primary endpoint. The difference in response rates was estimated and corresponding confidence intervals were derived to assess equivalence for the primary endpoint. This abstract presents results up to Week 24.ResultsIn total, 621 subjects were randomised to receive BAT1806/BIIB800 (N=312), TCZ (N=155), or TCZ followed by BAT1806/BIIB800 (N=154). The groups were comparable in terms of baseline demographics and disease characteristics, including age, gender, disease activity and disease duration. The estimated proportions of subjects achieving an ACR20 response in the BAT1806/BIIB800 vs. the TCZ groups, respectively, were 68.97% vs. 64.82% at Week 12 and 69.89% vs. 67.94% at Week 24. The estimated difference between ACR response rates was 4.15% (95% CI -3.63, 11.93) at week 12, and 1.94% (90% CI -4.04, 7.92; 95% CI -5.18, 9.07) at Week 24. The CIs for the estimated differences between the treatment groups were within the pre-defined equivalence margins (Figure 1). The treatment groups were comparable in terms of serum trough levels, incidence of TEAEs and ADA/NAb positivity (Table 1).Table 1.Safety and Immunogenicity up to Week 24, and Pharmacokinetics at Week 24TCZ (N =309) n (%)BAT1806/BIIB800 (N=312) n (%)TEAE196 (63.4)201 (64.4)Related TEAE151 (48.9)148 (47.4)Serious TEAE13 (4.2)11 (3.5)Related Serious TEAE7 (2.3)2 (0.6)Fatal TEAE1 (0.3)3 (1.0)ADA positive a42 (13.6%)64 (20.5%)NAb positive a42 (13.6%)63 (20.2%)PK, n271276Serum trough level (ug/mL), mean (SD)15.4 (17.1)15.8 (12.3)Serum trough level (ug/mL), geometric mean (CV%)12.3 (140.3)12.9 (121.3)Below limit of quantification, n (%)43 (15.9)28 (10.1)TEAE, treatment emergent adverse eventsa subjects with ≥1 ADA/NAb positive results up to week 24ConclusionBAT1806/BIIB800 has demonstrated equivalent efficacy at Week 12 and Week 24 and a similar PK, safety and immunogenicity profile as reference tocilizumab up to Week 24.Disclosure of InterestsXiaomei Leng: None declared, Piotr Leszczynski: None declared, Sławomir Jeka: None declared, Shengyun Liu: None declared, Huaxiang Liu: None declared, Malgorzata Miakisz: None declared, Jieruo Gu: None declared, Lali Kilasonia Speakers bureau: Sandoz, Amgen, Takeda, Mykola Stanislavchuk Speakers bureau: Pfizer, Orion, Boehringer Ingelheim, Xiaolei Yang Shareholder of: Employee of the Bio-thera Solutions Ltd. with shares as a part of Stock incentive plan., Employee of: Employee of the Bio-thera Solutions Ltd., Yinbo Zhou Shareholder of: Employee of Bio-thera Solutions Ltd. with share as part of Stock incentive plan, Employee of: Employee of Bio-thera Solutions Ltd., Qingfeng Dong Shareholder of: Employee of Bio-thera Solutions Ltd. with shares as part of Stock incentive plan, Employee of: Employee of Bio-thera Solutions Ltd., Marian Mitroiu Shareholder of: Employee of Biogen and may hold stocks, Employee of: Employee of Biogen, Janet Addison Shareholder of: Employee of Biogen and holds stock in Biogen, Employee of: Employee of Biogen, Xiaofeng Zeng: None declared
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Dong X, Sun Z, Liang J, Wang H, Zhu D, Leng X, Wang C, Kong D, Lv F. Corrigendum to "A visible fluorescent nanovaccine based on functional genipin crosslinked ovalbumin protein nanoparticles" [Nanomedicine: Nanotechnology, Biology, and Medicine 14 (2018) 1087-1098/NANO 1763]. Nanomedicine 2022; 42:102524. [PMID: 35063653 DOI: 10.1016/j.nano.2022.102524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 01/11/2022] [Indexed: 06/14/2023]
Affiliation(s)
- Xia Dong
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, PR China
| | - Zhiting Sun
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, PR China
| | - Jie Liang
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, PR China
| | - Hai Wang
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, PR China
| | - Dunwan Zhu
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, PR China
| | - Xigang Leng
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, PR China
| | - Chun Wang
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, PR China; Department of Biomedical Engineering, University of Minnesota, MN, United States
| | - Deling Kong
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, PR China
| | - Feng Lv
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, PR China.
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Deng B, Ma B, Ma Y, Cao P, Leng X, Huang P, Zhao Y, Ji T, Lu X, Liu L. Doxorubicin and CpG loaded liposomal spherical nucleic acid for enhanced Cancer treatment. J Nanobiotechnology 2022; 20:140. [PMID: 35303868 PMCID: PMC8932194 DOI: 10.1186/s12951-022-01353-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 03/04/2022] [Indexed: 01/01/2023] Open
Abstract
Chemotherapeutics that can trigger immunogenic cell death (ICD) and release tumor-specific antigens are effective on treating a variety of cancers. The codelivery of chemotherapeutics with adjuvants is a promising strategy to achieve synergistic therapeutic effect. However, low drug loading and complicated preparation of current delivery systems lead to carrier-associated toxicity and immunogenicity. Herein, we developed a facile approach to construct liposomal spherical nucleic acids (SNA) by the self-assembly of 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE)-doxorubicin conjugate and DOPE-matrix metalloproteinases-9 (MMP-9) responsive peptide-CpG conjugate (DOPE-MMP-CpG). Liposomal SNAs efficiently co-delivered DOX and CpG into tumors and released the two drugs upon biological stimuli of MMP-9 enzyme in tumor microenvironment (TME) and high concentration of endogenous glutathione in tumor cells. We demonstrated that liposomal SNA enhanced activation of dendritic cells (DCs), promoted expansion of CD8+ and CD4+ T cells in both tumors and spleen, inhibited tumor growth, and extended animal survival. This work provided a simple strategy of delivering chemotherapeutics and adjuvants to tumors with synergistic therapeutic effect and reduced side effect.
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Affiliation(s)
- Bo Deng
- Tianjin Key Laboratory of Biomedical Materials, Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, China
| | - Bing Ma
- Tianjin Key Laboratory of Biomedical Materials, Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, China
| | - Yingying Ma
- Tianjin Key Laboratory of Biomedical Materials, Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, China
| | - Pei Cao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Xigang Leng
- Tianjin Key Laboratory of Biomedical Materials, Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, China
| | - Pengyu Huang
- Tianjin Key Laboratory of Biomedical Materials, Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, China
| | - Yuanyuan Zhao
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Science, No. 2, 1st North Street, Zhongguancun, Beijing, 100190, People's Republic of China
| | - Tianjiao Ji
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Xueguang Lu
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Science, No. 2, 1st North Street, Zhongguancun, Beijing, 100190, People's Republic of China.
| | - Lanxia Liu
- Tianjin Key Laboratory of Biomedical Materials, Key Laboratory of Biomaterials and Nanotechnology for Cancer Immunotherapy, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, China.
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Liu J, Li B, Jing H, Wu Y, Kong D, Leng X, Wang Z. Swim Bladder as a Novel Biomaterial for Cardiovascular Materials with Anti-Calcification Properties. Adv Healthc Mater 2022; 11:e2102688. [PMID: 35043599 DOI: 10.1002/adhm.202102688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Wang FJ, Leng X, Gao D, Shen XY, Wang WP, Liu HM, Liu PF. [Application of traction metal clip with fishhook-like device in endoscopic resection]. Zhonghua Yi Xue Za Zhi 2021; 101:3660-3663. [PMID: 34823284 DOI: 10.3760/cma.j.cn112137-20210425-00986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
From July 2020 to June 2021, patients in Jiangyin Hospital Affiliated to Nantong University who met the enrollment criteria were treated with the fishhook-like device during the operation to suture the postoperative wound (group A). Patients with similar conditions and similar size wounds who were treated with a "purse-string suture" to suture the wounds were retrospectively analyzed as the control group (group B). Difference in the suture rate, adverse events, time required for suturing, and number of metal clips were compared between the two groups. The time required for suturing was (7.83±2.41) min in group A and (11.00±3.31) min in group B. The difference was statistically significant (P=0.002). The number of metal clamps used in group A averaged 7.17 pieces/case, and the number of metal clamps used in group B averaged 7.06 pieces/case. The difference was not statistically significant (P>0.05).The traction metal clip with the fishhook-like device is ingeniously designed and easy to operate. It has a good suture effect on the wound after endoscopic resection and effectively prevents postoperative adverse events.
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Affiliation(s)
- F J Wang
- Department of Gastroenterology, Jiangyin Hospital Affiliated to Nantong University, Jiangyin 214400, China
| | - X Leng
- Department of Gastroenterology, Jiangyin Hospital Affiliated to Nantong University, Jiangyin 214400, China
| | - D Gao
- Department of Gastroenterology, Jiangyin Hospital Affiliated to Nantong University, Jiangyin 214400, China
| | - X Y Shen
- Department of Gastroenterology, Jiangyin Hospital Affiliated to Nantong University, Jiangyin 214400, China
| | - W P Wang
- Department of Gastroenterology, Jiangyin Hospital Affiliated to Nantong University, Jiangyin 214400, China
| | - H M Liu
- Department of Gastroenterology, Jiangyin Hospital Affiliated to Nantong University, Jiangyin 214400, China
| | - P F Liu
- Department of Gastroenterology, Jiangyin Hospital Affiliated to Nantong University, Jiangyin 214400, China
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You H, Li M, Zhao JL, Wu L, Duan X, Luo H, Zhao C, Zhan F, Wu Z, Li H, Yang M, Xu J, Wei W, Wang Y, Shi J, Qu J, Wang Q, Leng X, Tian X, Zhao Y, Zeng X. POS0754 DEVELOPMENT OF A RISK PREDICTION MODEL FOR VENOUS THROMBOEMBOLISM IN PATIENTS WITH SYSTEMIC LUPUS ERYTHEMATOSUS: THE SLE-VTE SCORE. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.2769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Patients with systemic lupus erythematosus (SLE) have a substantially increased risk of venous thromboembolism (VTE). An individual VTE risk assessment is important to ensure that all patients are assessed and given adequate thromboprophylaxis.Objectives:We conducted this study to develop a risk score for VTE in patients with SLE.Methods:Patients with SLE who participated in the Chinese SLE Treatment and Research group were enrolled in this study. Patient baseline information and clinical laboratory indicators were obtained, and VTE events were recorded every 3-6 months during follow-up visits. The risk prediction model was created and internally validated using the bootstrap methods, and a scoring system was established (Figure 1).Figure 1.Flow chart of study design.Results:Out of 4,502 patients included in this study, 135 had a VTE event. After univariate analysis and Lasso regression, the following 11 variables were identified and included in the risk prediction model: male sex, age, BMI ≥25 kg/m2, hyperlipidemia, hypoalbuminemia, hsCRP>3 mg/L, renal involvement, nervous system involvement, anti-β2-glycoprotein I antibody positivity, lupus anticoagulant positivity, and no use of hydroxychloroquine. The AUC for the SLE-VTE score (Table 1) was 0.947 (95% CI, 0.9249-0.9694). The SLE-VTE score’s sensitivity and specificity with the optimal cutoff value of 13 were 0.919 and 0.881, respectively. The SLE-VTE score was superior to the GAPSS system in predicting the risk of VTE in patients with SLE (AUC= 0.947 vs. 0.680, P< 0.001; integrated discrimination improvement (IDI)= 0.6652, P< 0.001; net reclassification improvement (NRI)= 0.6652, P< 0.001).Table 1.Final multivariable analysis for venous thromboembolism risk in patients with SLE β coefficientsOdds ratio* (95% CI)P-valuePoints in scoring systemMale0.6211.86(0.953-3.503)0.0612Age at study entry(≥50)0.8372.308(1.339-3.915)0.0023BMI02(kg/m20.7922.209(1.333-3.627)0.0023Hyperlipemia0.8382.313(1.246-4.166)0.0063Hypoalbuminemia2.1638.697(5.185-14.794)< 0.0017hsCRP>3 mg/L1.4524.272(2.618-6.968)< 0.0015Anti β2GPI1.0132.754(1.543-4.853)0.0013LA1.5594.752(2.799-8.072)< 0.0015Nervous system2.38210.832(6.163-18.998)< 0.0018Lupus nephritis0.8352.305(1.414-3.756)0.0013No use of hydroxychloroquine1.7715.876(3.722-9.401)< 0.0016BMI: body mass index; hsCRP: Hypersensitive c-reactive protein; ACL: anticardiolipin, antiβ2GPI: anti-β2-glycoprotein I, LA: lupus anticoagulantm;Values in bold are statistically significant at p <0.05.Conclusion:Various factors are related to the occurrence of VTE in patients with SLE. The proposed SLE-VTE risk score can accurately predict the risk of VTE and help identify SLE patients with a high risk of VTE who may benefit from thromboprophylaxis.References:[1]Ramirez GA, Efthymiou M, Isenberg DA, Cohen H. Under crossfire: thromboembolic risk in systemic lupus erythematosus. Rheumatology. 2018;58:940-952.[2]Chung WS, Lin CL, Chang SN, Lu CC, Kao CH. Systemic lupus erythematosus increases the risks of deep vein thrombosis and pulmonary embolism: a nationwide cohort study. J Thromb Haemost. 2014;12:452-458.[3]Liew NC, Alemany GV, Angchaisuksiri P, et al. Asian venous thromboembolism guidelines: updated recommendations for the prevention of venous thromboembolism. Int Angiol. 2017;36:1.[4]Savino S, Giovanni S, Veronica M, Dario R, Khamashta MA, Laura BM. GAPSS: the Global Anti-Phospholipid Syndrome Score. Rheumatology. 2013:8.[5]Konstantinides SV, Meyer G, Becattini C, et al. 2019 ESC Guidelines for the diagnosis and management of acute pulmonary embolism developed in collaboration with the European Respiratory Society (ERS). Eur Heart J. 2020;41:543-603.[6]Moghadamyeghaneh Z, Hanna MH, Carmichael JC, Nguyen NT, Stamos MJ. A Nationwide Analysis of Postoperative Deep Vein Thrombosis and Pulmonary Embolism in Colon and Rectal Surgery. J Gastrointest Surg. 2014;18:2169-2177.Disclosure of Interests:None declared
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Liu D, Liu J, Ma B, Deng B, Leng X, Kong D, Liu L. A simple self-adjuvanting biomimetic nanovaccine self-assembled with the conjugate of phospholipids and nucleotides can induce a strong cancer immunotherapeutic effect. Biomater Sci 2021; 9:84-92. [PMID: 33016303 DOI: 10.1039/d0bm01333a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Biomimetic nanoparticles have potential applications in many fields due to their favorable properties. Here, we developed a self-adjuvanting biomimetic anti-tumor nanovaccine, which was self-assembled with an amphiphilic conjugate synthesized with the phospholipids of 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE) and hydrophilic Toll-like receptor (TLR9) agonist CpG ODN. The nanovaccine could not only provide effective initial antigen stimulation and sustained long-term antigen supply with a controlled release, but also induce antigen cross-presentation via the MHC-I pathway initiating CD8+ T-cell responses. Moreover, the dense nucleotide shell around the nanovaccine could promote antigen endocytosis via various receptor-mediated pathways into dendritic cells. CpG ODN interacted with TLR9 triggering the cytokine secretion of TNF-α and IL-10, which further boosted the anti-tumor humoral and cellular immune responses, which led to a significant tumor suppressive effect and remarkable survival prolongation. So, this nanovaccine self-assembled with phospholipid-nucleotide amphiphiles can serve as a safe, simple and efficient approach for anti-tumor immunotherapy.
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Affiliation(s)
- Dan Liu
- The Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Peking Union Medical College & Chinese Academy of Medical Sciences, Tianjin 300192, China.
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Abstract
Nanovaccines have emerged as promising agents for cancer immunotherapy. However, insufficient antitumor immunity caused by inefficient antigen/adjuvant loading and complicated preparation processes are the major obstacles that limit their clinical application. Herein, two adjuvants, monophosphatidyl A (MPLA) and CpG ODN, with antigens were designed into a nanovaccine to overcome the above obstacles. This nanovaccine was constructed with adjuvants (without additional materials) through facile self-assembly, which not only ensured a high loading efficacy and desirable safety but also facilitated clinical translation for convenient fabrication. More importantly, the selected adjuvants could achieve a notable immune response through synergistic activation of Toll-like receptor 4 (TLR4) and TLR9 signaling pathways, and the resulting nanovaccine remarkably inhibited the tumor growth and prolonged the survival of tumor-implanted mice. This nanovaccine system provides an effective strategy to construct vaccines for cancer immunotherapy.
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Affiliation(s)
- Dan Liu
- The Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Peking Union Medical College & Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Bo Deng
- The Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Peking Union Medical College & Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Zongran Liu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bing Ma
- The Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Peking Union Medical College & Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Xigang Leng
- The Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Peking Union Medical College & Chinese Academy of Medical Sciences, Tianjin 300192, China
| | - Deling Kong
- The Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Peking Union Medical College & Chinese Academy of Medical Sciences, Tianjin 300192, China
- College of Life Science, Nankai University, Tianjin 300071, China
| | - Tianjiao Ji
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lanxia Liu
- The Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Peking Union Medical College & Chinese Academy of Medical Sciences, Tianjin 300192, China
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Wang X, Liu J, Jing H, Li B, Sun Z, Li B, Kong D, Leng X, Wang Z. Biofabrication of poly(l-lactide-co-ε-caprolactone)/silk fibroin scaffold for the application as superb anti-calcification tissue engineered prosthetic valve. Mater Sci Eng C Mater Biol Appl 2021; 121:111872. [PMID: 33579497 DOI: 10.1016/j.msec.2021.111872] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/16/2020] [Accepted: 01/03/2021] [Indexed: 12/20/2022]
Abstract
In this study, electrospun scaffolds were fabricated by blending poly(l-lactide-co-ε-caprolactone) (PLCL) and silk fibroin (SF) with different ratios, and further the feasibility of electrospun PLCL/SF scaffolds were evaluated for application of tissue engineered heart valve (TEHV). Scanning electron microscopy (SEM) results showed that the surface of PLCL/SF electrospun scaffolds was smooth and uniform while the mechanical properties were appropriate as valve prosthesis. In vitro cytocompatibility evaluation results demonstrated that all of the PLCL/SF electrospun scaffolds were cytocompatible and valvular interstitial cells (VICs) cultured on PLCL/SF scaffolds of 80/20 & 70/30 ratios exhibited the best cytocompatibility. The in vitro osteogenic differentiation of VICs including alkaline phosphatase (ALP) activity and quantitative polymerase chain reaction (qPCR) assays indicated that PLCL/SF scaffolds of 80/20 & 90/10 ratios behaved better anti-calcification ability. In the in vivo calcification evaluation model of rat subdermal implantation, PLCL/SF scaffolds of 80/20 & 90/10 ratios presented better anti-calcification ability, which was consistent with the in vitro results. Moreover, PLCL/SF scaffolds of 80/20 & 70/30 ratios showed significantly enhanced cell infiltration and M2 macrophage with higher CD206+/CD68+ ratio. Collectively, our data demonstrated that electrospun scaffolds with the PLCL/SF ratio of 80/20 hold great potential as TEHV materials.
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Affiliation(s)
- Xiaoxiao Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Jing Liu
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China; Tianjin Enterprise Key Laboratory for Application Research of Hyaluronic Acid, Tianjin 300385, China.
| | - Huimin Jing
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Binhan Li
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Zhiting Sun
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Boxuan Li
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Deling Kong
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China; Key Laboratory of Bioactive Materials of Ministry of Education, State Key Laboratory of Medicinal Chemical Biology, College of Life Science, Nankai University, Tianjin 300071, China
| | - Xigang Leng
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China.
| | - Zhihong Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China.
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Sun Z, Wang X, Liu J, Wang Z, Wang W, Kong D, Leng X. ICG/l-Arginine Encapsulated PLGA Nanoparticle-Thermosensitive Hydrogel Hybrid Delivery System for Cascade Cancer Photodynamic-NO Therapy with Promoted Collagen Depletion in Tumor Tissues. Mol Pharm 2021; 18:928-939. [PMID: 33427470 DOI: 10.1021/acs.molpharmaceut.0c00937] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [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]
Abstract
Photodynamic therapy (PDT) is promising for clinical cancer therapy; however, the efficacy was limited as an individual treatment regimen. Here, an approach synergistically combining PDT and nitric oxide (NO) gas therapy along with destruction of the tumor extracellular matrix (ECM) was presented to eliminate cancer. Specifically, the NO donor l-arginine (l-Arg) and the photosensitizer indocyanine green (ICG) were co-encapsulated in poly(lactic-glycolic acid) (PLGA) nanoparticles and then loaded into the poly(ε-caprolactone)-poly(ethylene glycol)-poly(ε-caprolactone) (PCL-PEG-PCL) hydrogel to develop an injectable, thermosensitive dual drug delivery system (PLGA@ICG@l-Arg/Gel). Significantly, reactive oxygen species (ROS) produced by PLGA@ICG@l-Arg/Gel under near-infrared (NIR) light irradiation could not only result in the apoptosis of cancer cells but also oxidize l-Arg to generate NO, which could suppress the proliferation of cancer cells. Moreover, ROS could further oxidize NO to generate peroxynitrite anions (ONOO-). ONOO- could activate matrix metalloproteinases (MMPs), which notably degraded collagen in ECM so as to damage the tumor microenvironment. PLGA@ICG@l-Arg/Gel significantly increased the antitumor efficacy against highly malignant 4T1 tumors in mice. Taken together, PLGA@ICG@l-Arg/Gel is a multifunctional platform that provides a novel strategy for cancer treatment with cascade amplification of the ROS oxidation effect, which holds great potential in clinical translation.
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Affiliation(s)
- Zhiting Sun
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Xiaoxiao Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Jing Liu
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Zhihong Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Weiwei Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Deling Kong
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China.,Key Laboratory of Bioactive Materials of Ministry of Education, State Key Laboratory of Medicinal Chemical Biology, College of Life Science, Nankai University, Tianjin 300071, China
| | - Xigang Leng
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
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Wong KS, Chen XY, Leung TWH, Siu YW, Xiong L, Leng X. Intracranial artery calcification to screen patients at high risk of recurrent stroke: abridged secondary publication. Hong Kong Med J 2020; 26 Suppl 7:42-44. [PMID: 33229619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023] Open
Affiliation(s)
- K S Wong
- Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong
| | - X Y Chen
- Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong
| | - T W H Leung
- Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong
| | - Y W Siu
- Department of Diagnostic and Interventional Radiology, Kwong Wah Hospital
| | - L Xiong
- Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong
| | - X Leng
- Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong
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Zhang J, Liu D, Liu J, Han Y, Xu H, Leng X, Kong D, Liu L. Hybrid spherical nucleotide nanoparticles can enhance the synergistic anti-tumor effect of CTLA-4 and PD-1 blockades. Biomater Sci 2020; 8:4757-4766. [PMID: 32840510 DOI: 10.1039/d0bm00908c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Combined blockades of CTLA-4 and PD-1 can yield better overall complementary clinical outcomes than individual blockades, but the response rates are still relatively low. To investigate the anti-tumor effects of various combined strategies, we designed various spherical nucleotide nanoparticles (SNPs) loaded with CTLA-4 aptamer (cSNPs), PD-1 siRNA (pSNPs) or both (hybrid SNPs, or hSNPs). The results demonstrated that hSNPs could promote significantly stronger anti-tumor immune responses in a nonredundant fashion than the mixture of pSNPs and cSNPs (pSNPs & cSNPs). We reasoned that this is because all individual immune cells could receive both CTLA-4 and PD-1 blockades when they engulfed hSNPs, but it is much less likely that individual immune cells could receive both CTLA-4 and PD-1 blockades as many of them may not take both pSNPs and cSNPS from pSNPs & cSNPs. Further results revealed that the synergistic immune stimulatory effects of CTLA-4 and PD-1 blockades in the form of hSNPs were at least partly through regulating the immune suppressive function of both Tregs and TIM3+ exhausted-like CD8 T cells and allowing effector T cells to expand. This mechanism is not identical to earlier reported mechanisms of CTLA-4 and PD-1 blockades.
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Affiliation(s)
- Jing Zhang
- The Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Peking Union Medical College & Chinese Academy of Medical Sciences, Tianjin 300192, China.
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Zeng X, Leng X, Wei K, Tang WM, Tang CH, Tunceli K, Aggarwal J, Ramey D, Lozano F, Doshi I, Macahilig C, Odak S, Johnson K. FRI0428 RESULTS FROM A CROSS-SECTIONAL, OBSERVATIONAL STUDY TO ASSESS INADEQUATE PAIN RELIEF IN PATIENTS WITH KNEE AND/OR HIP OSTEOARTHRITIS IN CHINA. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.5813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Osteoarthritis (OA) of the knee and hip is a leading cause of disability worldwide, particularly due to the primary symptom of pain in the weight-bearing joints. There is limited data that characterizes patients who experience moderate to severe pain despite analgesic treatment in China.Objectives:This study estimates the real-world prevalence of inadequate pain relief (IPR) among patients with knee and/or hip OA who have been prescribed analgesic therapy and characterizes this patient population. The study was conducted in China, the Philippines, Thailand, Russia, and Mexico. This abstract presents results from China.Methods:This is a multinational, multi-site, cross-sectional, observational study. Physicians managing patients with OA were recruited and asked to enroll patients over 50 years of age with knee and/or hip OA who had been prescribed topical and/or oral pain medication for at least 30 days prior to study visit. Patients completed a one-time assessment of pain, function, and health-related quality of life (HRQOL) using patient reported outcome (PRO) instruments. Physicians abstracted data from patient charts. IPR was defined as an average pain score of >4/10 on Brief Pain Inventory Question #5 (average pain). Statistical tests including chi-square for categorical variables and Mann-Whitney Wilcoxon test for continuous variables were conducted to assess differences in demographic and clinical characteristics as well as PROs between patients with and without IPR. A multivariate regression analysis was conducted to assess the relationship between IPR and PROs.Results:571 patients treated at 10 hospital centers in China were enrolled. 73% were female, the mean (SD) age was 62 (8.32) years. The number of years with OA ranged from less than one year to over 37 years, suggesting a broad sample of patients. Most patients were impacted by knee OA only (90%). Almost half (43%) of the study population met the definition of IPR. Patients with IPR tended to be older, have greater prevalence of obesity, have more comorbidities, and had longer disease duration. The majority (98%) of patients were receiving nonsteroidal anti-inflammatory drugs (NSAIDS), followed by chondroprotective medications (23%). However, more patients with IPR mentioned being dissatisfied with treatment (38% vs. 21%). After adjusting for covariates, patients with IPR reported worse HRQOL, more functional limitations, and reduced work productivity compared to patients without IPR.Conclusion:IPR is highly prevalent among individuals with knee and/or hip OA in China and is associated with decreased HRQOL and work productivity, impaired function, and treatment dissatisfaction. Developing awareness among healthcare professionals about the presence and potential impact of IPR is important for the ultimate improvement of OA patient management.PROmean (SE)No IPR(N=328)IPR(N=243)EQ-5D Index0.72 (0.01)0.49 (0.02)EQ-5D VAS72.3 (0.85)65.5 (1.00)WOMAC Pain Subscale13.1 (0.78)22.7 (1.52)WOMAC Stiffness Subscale4.2 (0.27)7.4(0.51)WOMAC Physical Function Subscale44.8 (2.61)76.9 (5.07)Work Productivity Loss30.0 (4.07)47.5 (10.46)Multivariate analysis adjusted for age, year since OA diagnosis/follow-up, gender, BMI, number of medication classes, insurance, physician specialty/academic responsibilities, number of affected joints, diabetes, CVD, hyperlipidemia/hypertension, and depression. All differences were statistically significant (p < 0.05) except work productivity loss (p=0.11)Disclosure of Interests:Xiaofeng Zeng Consultant of: MSD Pharmaceuticals, Xiaomei Leng Consultant of: MSD Pharmaceuticals, Knightley Wei Employee of: Employed by MSD Pharmaceuticals (China), Wen Min Tang Employee of: Employed by MSD Pharmaceuticals (China), Cai Hua Tang Employee of: Employed by MSD Pharmaceuticals (China), Kaan Tunceli Shareholder of: Holds company stock at Merck Sharp & Dohme Corp., Employee of: Employed by Merck Sharp & Dohme Corp., Jyoti Aggarwal Consultant of: Merck & Co., Inc., Dena Ramey Shareholder of: Holds company stock at Merck Sharp & Dohme Corp., Employee of: Employed by Merck Sharp & Dohme Corp., Fidel Lozano Employee of: Merck & Co. salaried employee, Ishita Doshi Shareholder of: Holds company stock at Merck Sharp & Dohme Corp., Employee of: Employed by Merck Sharp & Dohme Corp., Cynthia Macahilig Consultant of: Consultant to Merck Sharp & Dohme Corp., Shardul Odak Consultant of: Consultant to Merck Sharp & Dohme Corp., Kelly Johnson Employee of: Employed by Merck & Co., Inc.
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Liu J, Li B, Jing H, Qin Y, Wu Y, Kong D, Leng X, Wang Z. Curcumin-crosslinked acellular bovine pericardium for the application of calcification inhibition heart valves. ACTA ACUST UNITED AC 2020; 15:045002. [PMID: 31972553 DOI: 10.1088/1748-605x/ab6f46] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Glutaraldehyde (GA) crosslinked bovine or porcine pericardium tissues exhibit high cell toxicity and calcification in the construction of bioprosthetic valves, which accelerate the failure of valve leaflets and motivate the exploration for alternatives. Polyphenols, including curcumin, procyanidin and quercetin, etc, have showed great calcification inhibition potential in crosslinking collagen and elastin scaffolds. Herein, we developed an innovative phenolic fixing technique by using curcumin as the crosslinking reagent for valvular materials. X-ray photoelectron spectroscopy and Fourier transform infrared spectrometry assessments confirmed the hydrogen bond between curcumin and acellular bovine pericardium. Importantly, the calcification inhibition capability of the curcumin-crosslinked bovine pericardium was proved by the dramatically reduced Ca2+ content in the curcumin-fixed group in in vitro assay, a juvenile rat subcutaneous implants model, as well as an osteogenic differentiation model. In addition, the results showed that the curcumin-fixed bovine pericardium exhibited better performance in the areas of mechanical performance, hemocompatibility and cytocompatibility, in comparison with the GA group and the commercialized product. In summary, we demonstrated that curcumin was a feasible crosslinking reagent to fix acellular bovine pericardium, which showed great potential for biomedical applications, particularly in cardiovascular biomaterials with calcification inhibition capacity.
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Affiliation(s)
- Jing Liu
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, People's Republic of China
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16
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Sun Z, Liu J, Wang X, Jing H, Li B, Kong D, Leng X, Wang Z. Epoxy Chitosan-Crosslinked Acellular Bovine Pericardium with Improved Anti-calcification and Biological Properties. ACS Appl Bio Mater 2020; 3:2275-2283. [PMID: 35025279 DOI: 10.1021/acsabm.0c00067] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 02/03/2023]
Abstract
Glutaraldehyde (GA) was conventionally used to crosslink bovine pericardium to prepare bioprosthetic heart valves (BHVs), which usually fail within 10 years because of valve deterioration and calcification. To overcome the high cytotoxicity and severe calcification of GA-crosslinked BHVs, a quaternary ammonium salt of epoxy chitosan (epoxy group-modified 3-chlorine-2-hydroxypropyl trimethyl chitosan, abbreviated as "eHTCC") was developed to modify the acellular bovine pericardium to substitute GA and improve its anti-calcification and biocompatible properties. Mechanical test, enzymatic stability test, blood compatibility assay, and cytocompatibility assay were used to investigate its mechanical property and biocompatibility. The anti-calcification effect of the eHTCC-modified bovine pericardium (eHTCC-BP) was assessed by in vitro assay and rat subcutaneous implantation assay. The results showed that eHTCC-BP could improve the mechanical properties and anti-enzymolysis ability of BP, as well as retain the original three-dimensional structure, compared with the uncrosslinked-BP group. Moreover, the in vivo calcification level of the eHTCC-BP group was much lower than that of the GA-BP group, which was 5.1% (2 weeks), 2.3% (4 weeks), and 0.8% (8 weeks) of the GA-BP group. In summary, this study demonstrated that eHTCC could be a potential crosslinking agent for the extracellular matrix for its favorable crosslinking effects, anti-enzymolysis, anti-calcification, and biocompatibility.
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Affiliation(s)
- Zhiting Sun
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Jing Liu
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Xiaoxiao Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Huimin Jing
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Binhan Li
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Deling Kong
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China.,Key Laboratory of Bioactive Materials of Ministry of Education, State Key Laboratory of Medicinal Chemical Biology, College of Life Science, Nankai University, Tianjin 300071, China
| | - Xigang Leng
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Zhihong Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
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Wang X, Li B, Jing H, Dong X, Leng X. MWCNT-mediated combinatorial photothermal ablation and chemo-immunotherapy strategy for the treatment of melanoma. J Mater Chem B 2020; 8:4245-4258. [DOI: 10.1039/c9tb02238d] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
DOX and CpG loaded MWCNT with NIR irradiation could destroy tumor cells by photothermal and chemotherapy and release tumor-associated antigens, thus generating melanoma specific immune response to achieve synergistic therapeutic effect.
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Affiliation(s)
- Xiaoxiao Wang
- Tianjin Key Laboratory of Biomedical Materials
- Institute of Biomedical Engineering
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Tianjin 300192
- P. R. China
| | - Binhan Li
- Tianjin Key Laboratory of Biomedical Materials
- Institute of Biomedical Engineering
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Tianjin 300192
- P. R. China
| | - Huimin Jing
- Tianjin Key Laboratory of Biomedical Materials
- Institute of Biomedical Engineering
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Tianjin 300192
- P. R. China
| | - Xia Dong
- Tianjin Key Laboratory of Biomedical Materials
- Institute of Biomedical Engineering
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Tianjin 300192
- P. R. China
| | - Xigang Leng
- Tianjin Key Laboratory of Biomedical Materials
- Institute of Biomedical Engineering
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Tianjin 300192
- P. R. China
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Liu J, Li B, Jing H, Wu Y, Kong D, Leng X, Wang Z. Swim Bladder as a Novel Biomaterial for Cardiovascular Materials with Anti-Calcification Properties. Adv Healthc Mater 2020; 9:e1901154. [PMID: 31815367 DOI: 10.1002/adhm.201901154] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 08/22/2019] [Revised: 11/18/2019] [Indexed: 12/13/2022]
Abstract
Calcification is a major cause of cardiovascular materials failure and deterioration, which leads to the restriction of their wide application. To develop new materials with anti-calcification capability is an urgent clinical requirement. Herein, a natural material derived from swim bladders as one promising candidate is introduced, which is prepared by decellularization and glutaraldehyde (GA) crosslinking. Data show that the swim bladder is mainly composed of collagen I, glycosaminoglycan (GAG), and elastin, especially rich in elastin, in accordance with higher elastic modulus in comparison to bovine pericardium. Moreover, the calcification of this material is proved dramatically lower than that of bovine pericardium by in vitro calcification assessments and in vivo assay using a rat subcutaneous implantation model. Meanwhile, good cytocompatibility, hemocompatibility, and enzymatic stability are demonstrated by in vitro assays. Further, a small diameter vascular graft using this material is successfully developed by rolling method and in situ implantation assay using a rat abdominal artery replacement model shows great performances in the aspect of higher patency and lower calcification. Taken together, these superior properties of swim bladder-derived material in anti-calcification, proper mechanical strength and stability, and excellent hemocompatibility and cytocompatibility endow it a great candidate as cardiovascular biomaterials.
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Affiliation(s)
- Jing Liu
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300192, China
| | - Binhan Li
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300192, China
| | - Huimin Jing
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300192, China
| | - Yongjian Wu
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - Deling Kong
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300192, China
- Key Laboratory of Bioactive Materials of Ministry of Education, State Key Laboratory of Medicinal Chemical Biology, College of Life Science, Nankai University, Tianjin, 300071, China
| | - Xigang Leng
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300192, China
| | - Zhihong Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, 300192, China
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Wang X, Wang N, Yang Y, Wang X, Liang J, Tian X, Zhang H, Leng X. Polydopamine nanoparticles carrying tumor cell lysate as a potential vaccine for colorectal cancer immunotherapy. Biomater Sci 2019; 7:3062-3075. [PMID: 31140475 DOI: 10.1039/c9bm00010k] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Polydopamine nanoparticles (PDA NPs) were prepared via dopamine self-polymerization; then, tumor cell lysate (TCL) was covalently attached onto the PDA NPs. The TCL loading capacity was 480 μg per mg of PDA NPs, and the resulting TCL@PDA NPs (241.9 nm) had perfect storage stability and negligible cytotoxicity against APCs. Tumor-bearing mice vaccinated with TCL@PDA NPs experienced significant delay in tumor progression due to the sufficient amount of CTLs and M1-type TAM as well as the deficient number of immunosuppression-related cells in the tumor tissues. Furthermore, empty PDA NPs had the ability to modulate DC maturation and delayed the development of tumors by facilitating the production of activated T cells and decreasing the subpopulation of MDSCs within the tumor microenvironment. Overall, these PDA NPs are expected to be a promising candidate for application as antigen delivery carriers because of their facile antigen loading method as well as their simple and rapid preparation process.
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Affiliation(s)
- Xiaoli Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China.
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Wang F, Leng X, Gao Y, Zhao K, Sun Y, Bian H, Liu H, Liu P. Endoscopic submucosal dissection of distal intestinal tumors using grasping forceps for traction. Tech Coloproctol 2019; 23:1079-1083. [PMID: 31659559 DOI: 10.1007/s10151-019-02102-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 10/15/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND The aim of this study was to assess the efficacy of traction device-assisted endoscopic submucosal dissection (ESD) of the rectum and the distal segment of sigmoid colon using grasping forceps. METHODS A total of 43 patients scheduled for colonic ESD at our institution were enrolled between January 2013 and June 2017. The patients were randomly allocated to receive conventional ESD (group A) or traction device-assisted ESD (group B). The procedure time, complication rate, and en-block resection rate in the two groups were compared. RESULTS A total of 41 patients completed the study. The procedure time, complication rate and en-block resection rate were, respectively, 104.1 ± 34.7 min, 15%, 90% in the routine group (group A) and 84.7 ± 23.5 min, 9.5%, 90.5% in traction device-assisted ESD (group B). The procedure time in group B was significantly less than that in group A (F = 4.442, p < 0.05). CONCLUSIONS Traction device-assisted ESD using grasping forceps is safe and effective in distal colon ESD.
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Affiliation(s)
- F Wang
- Xuzhou Medical University, No. 3 Yingrui Road, Jiangyin, China
| | - X Leng
- Xuzhou Medical University, No. 3 Yingrui Road, Jiangyin, China
| | - Y Gao
- Xuzhou Medical University, No. 3 Yingrui Road, Jiangyin, China
| | - K Zhao
- Xuzhou Medical University, No. 3 Yingrui Road, Jiangyin, China
| | - Y Sun
- Xuzhou Medical University, No. 3 Yingrui Road, Jiangyin, China
| | - H Bian
- Xuzhou Medical University, No. 3 Yingrui Road, Jiangyin, China
| | - H Liu
- Xuzhou Medical University, No. 3 Yingrui Road, Jiangyin, China
| | - P Liu
- Xuzhou Medical University, No. 3 Yingrui Road, Jiangyin, China.
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Liu W, Xie Y, Ping L, Jiang M, Zhang G, Cui Y, Xu J, Wu M, Leng X, Wang X, Wang S, Zhang G, Zhu J, Song Y. Safety and pharmacokinetics of novel CXCR4 antagonist YF-H-2015005 in the mobilization of hematopoietic stem cells in patients with non-Hodgkin’s lymphoma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz251.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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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Huang C, Zhang Z, Guo Q, Zhang L, Fan F, Qin Y, Wang H, Zhou S, Ou‐Yang W, Sun H, Leng X, Pan X, Kong D, Zhang L, Zhu D. A Dual-Model Imaging Theragnostic System Based on Mesoporous Silica Nanoparticles for Enhanced Cancer Phototherapy. Adv Healthc Mater 2019; 8:e1900840. [PMID: 31512403 DOI: 10.1002/adhm.201900840] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [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: 06/28/2019] [Revised: 08/15/2019] [Indexed: 01/01/2023]
Abstract
Mesoporous silica nanoparticles (MSNs) show great promise to be exploited as versatile multifunctional nanocarriers for effective cancer diagnosis and treatment. In this work, perfluorohexane (PFH)-encapsulated MSNs with indocyanine green (ICG)-polydopamine (PDA) layer and poly(ethylene glycol)-folic acid coating (designated as MSNs-PFH@PDA-ICG-PEG-FA) are successfully fabricated to achieve tumor ultrasonic (US)/near-infrared fluorescence (NIRF) imaging as well as photothermal therapy (PTT)/photodynamic therapy (PDT). MSNs-PFH@PDA-ICG-PEG-FA exhibits good monodispersity with high ICG loading, significantly enhances ICG photostability, and greatly improves cellular uptake. Upon single 808 nm NIR irradiation, the nanocarrier not only efficiently generates hyperthermia to realize PTT, but also produces reactive oxygen species (ROS) for effective PDT. Meanwhile, NIR irradiation can trigger PFH to undergo vaporization and provide a super-resolution US image. Thus, the PTT/PDT combination therapy can be dually guided by PFH-induced US imaging and ICG-induced NIRF imaging. In vivo antitumor studies demonstrate that PTT/PDT from MSNs-PFH@PDA-ICG-PEG-FA significantly inhibits tumor growth and achieves a cure rate of 60% (three out of five mice are completely cured). Hence, the multifunctional MSNs appear to be a promising theragnostic nanoplatform for multimodal cancer imaging and therapy.
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Affiliation(s)
- Chenlu Huang
- Tianjin Key Laboratory of Biomedical MaterialsInstitute of Biomedical EngineeringChinese Academy of Medical Sciences & Peking Union Medical College Tianjin 300192 China
| | - Zhiming Zhang
- Tianjin Key Laboratory of Biomedical MaterialsInstitute of Biomedical EngineeringChinese Academy of Medical Sciences & Peking Union Medical College Tianjin 300192 China
| | - Qing Guo
- Tianjin Key Laboratory of Biomedical MaterialsInstitute of Biomedical EngineeringChinese Academy of Medical Sciences & Peking Union Medical College Tianjin 300192 China
| | - Li Zhang
- Tianjin Key Laboratory of Biomedical MaterialsInstitute of Biomedical EngineeringChinese Academy of Medical Sciences & Peking Union Medical College Tianjin 300192 China
| | - Fan Fan
- Tianjin Key Laboratory of Biomedical MaterialsInstitute of Biomedical EngineeringChinese Academy of Medical Sciences & Peking Union Medical College Tianjin 300192 China
| | - Yu Qin
- Tianjin Key Laboratory of Biomedical MaterialsInstitute of Biomedical EngineeringChinese Academy of Medical Sciences & Peking Union Medical College Tianjin 300192 China
| | - Hai Wang
- Tianjin Key Laboratory of Biomedical MaterialsInstitute of Biomedical EngineeringChinese Academy of Medical Sciences & Peking Union Medical College Tianjin 300192 China
| | - Sheng Zhou
- Tianjin Key Laboratory of Biomedical MaterialsInstitute of Biomedical EngineeringChinese Academy of Medical Sciences & Peking Union Medical College Tianjin 300192 China
| | - Wenbin Ou‐Yang
- State Key Laboratory of Translational Cardiovascular MedicineFuwai HospitalChinese Academy of Medical Sciences & Peking Union Medical College Beijing 100037 China
| | - Hongfan Sun
- Tianjin Key Laboratory of Biomedical MaterialsInstitute of Biomedical EngineeringChinese Academy of Medical Sciences & Peking Union Medical College Tianjin 300192 China
| | - Xigang Leng
- Tianjin Key Laboratory of Biomedical MaterialsInstitute of Biomedical EngineeringChinese Academy of Medical Sciences & Peking Union Medical College Tianjin 300192 China
| | - Xiangbin Pan
- State Key Laboratory of Translational Cardiovascular MedicineFuwai HospitalChinese Academy of Medical Sciences & Peking Union Medical College Beijing 100037 China
| | - Deling Kong
- The Key Laboratory of Bioactive MaterialsMinistry of EducationCollege of Life SciencesNankai University Tianjin 300071 China
- Jiangsu Center for the Collaboration and Innovation of Cancer BiotherapyCancer InstituteXuzhou Medical University Xuzhou 221004 Jiangsu China
| | - Linhua Zhang
- Tianjin Key Laboratory of Biomedical MaterialsInstitute of Biomedical EngineeringChinese Academy of Medical Sciences & Peking Union Medical College Tianjin 300192 China
| | - Dunwan Zhu
- Tianjin Key Laboratory of Biomedical MaterialsInstitute of Biomedical EngineeringChinese Academy of Medical Sciences & Peking Union Medical College Tianjin 300192 China
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Zhang L, Wu S, Qin Y, Fan F, Zhang Z, Huang C, Ji W, Lu L, Wang C, Sun H, Leng X, Kong D, Zhu D. Targeted Codelivery of an Antigen and Dual Agonists by Hybrid Nanoparticles for Enhanced Cancer Immunotherapy. Nano Lett 2019; 19:4237-4249. [PMID: 30868883 DOI: 10.1021/acs.nanolett.9b00030] [Citation(s) in RCA: 111] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Among approaches of current cancer immunotherapy, a dendritic cell (DC)-targeted vaccine based on nanotechnology could be a promising way to efficiently induce potent immune responses. To enhance DC targeting and vaccine efficiency, we included imiquimod (IMQ), a toll-like receptor 7/8 (TLR 7/8) agonist, and monophosphoryl lipid A (MPLA), a TLR4 agonist, to synthesize lipid-polymer hybrid nanoparticles using PCL-PEG-PCL and DOTAP (IMNPs) as well as DSPE-PEG-mannose (MAN-IMNPS). The spatiotemporal delivery of MPLA (within the outer lipid layer) to extracellular TLR4 and IMQ (in the hydrophobic core of NPs) to intracellular TLR7/8 can activate DCs synergistically to improve vaccine efficacy. Ovalbumin (OVA) as a model antigen was readily absorbed by positively charged DOTAP and showed a quick release in vitro. Our results demonstrated that this novel nanovaccine enhanced cellular uptake, cytokine production, and maturation of DCs. Compared with the quick metabolism of free OVA-agonists, the depot effect of OVA-IMNPs was observed, whereas MAN-OVA-IMNPs promoted trafficking to secondary lymphoid organs. After immunization with a subcutaneous injection, the nanovaccine, especially MAN-OVA-IMNPs, induced more antigen-specific CD8+ T cells, greater lymphocyte activation, stronger cross-presentation, and more generation of memory T cells, antibody, IFN-γ, and granzyme B. Prophylactic vaccination of MAN-OVA-IMNPs significantly delayed tumor development and prolonged the survival in mice. The therapeutic tumor challenge indicated that MAN-OVA-IMNPs prohibited tumor progression more efficiently than other formulations, and the combination with an immune checkpoint blockade further enhanced antitumor effects. Hence, the DC-targeted vaccine codelivery with IMQ and MPLA adjuvants by hybrid cationic nanoparticles in a spatiotemporal manner is a promising multifunctional antigen delivery system in cancer immunotherapy.
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Affiliation(s)
- Linhua Zhang
- Tianjin Key Laboratory of Biomedical Materials , Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin 300192 , China
| | - Shengjie Wu
- Tianjin Key Laboratory of Biomedical Materials , Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin 300192 , China
| | - Yu Qin
- Tianjin Key Laboratory of Biomedical Materials , Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin 300192 , China
| | - Fan Fan
- Tianjin Key Laboratory of Biomedical Materials , Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin 300192 , China
| | - Zhiming Zhang
- Tianjin Key Laboratory of Biomedical Materials , Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin 300192 , China
| | - Chenlu Huang
- Tianjin Key Laboratory of Biomedical Materials , Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin 300192 , China
| | - Weihang Ji
- Department of Biomedical Engineering , University of Minnesota , 7-116 Hasselmo Hall, 312 Church Street SE , Minneapolis , Minnesota 55455 , United States
| | - Lu Lu
- Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine , Tianjin 300192 , China
| | - Chun Wang
- Department of Biomedical Engineering , University of Minnesota , 7-116 Hasselmo Hall, 312 Church Street SE , Minneapolis , Minnesota 55455 , United States
| | - Hongfan Sun
- Tianjin Key Laboratory of Biomedical Materials , Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin 300192 , China
| | - Xigang Leng
- Tianjin Key Laboratory of Biomedical Materials , Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin 300192 , China
| | - Deling Kong
- The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences , Nankai University , Tianjin 300071 , China
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute , Xuzhou Medical University , Xuzhou 221004 , Jiangsu , China
| | - Dunwan Zhu
- Tianjin Key Laboratory of Biomedical Materials , Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin 300192 , China
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Zhu D, Hu C, Fan F, Qin Y, Huang C, Zhang Z, Lu L, Wang H, Sun H, Leng X, Wang C, Kong D, Zhang L. Co-delivery of antigen and dual agonists by programmed mannose-targeted cationic lipid-hybrid polymersomes for enhanced vaccination. Biomaterials 2019; 206:25-40. [DOI: 10.1016/j.biomaterials.2019.03.012] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 03/01/2019] [Accepted: 03/11/2019] [Indexed: 02/06/2023]
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Qin Y, Zhang Z, Huang C, Fan F, Liu L, Lu L, Wang H, Liu Z, Yang J, Wang C, Yang H, Sun H, Leng X, Kong D, Zhang L, Zhu D. Folate-Targeted Redox-Responsive Polymersomes Loaded with Chemotherapeutic Drugs and Tariquidar to Overcome Drug Resistance. J Biomed Nanotechnol 2019; 14:1705-1718. [PMID: 30041718 DOI: 10.1166/jbn.2018.2623] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Tumor multidrug resistance (MDR) is a fatal obstacle to cancer chemotherapy. The combination of P-glycoprotein (P-gp) inhibitor and chemotherapeutic drugs is one of the effective strategies to reverse tumor MDR. Herein, a folate-decorated PCL-ss-PEG-ss-PCL based redox-responsive polymersome (FA-TQR-Co-PS) was constructed, which was loaded with P-gp inhibitor tariquidar (TQR), anticancer drugs doxorubicin (DOX) and paclitaxel (PTX). The results suggested that the FA-TQR-Co-PS with an apparent bilayered lamellar structure displayed good monodispersity, high drug loading capacity, superior stability and redox-stimulated drug release peculiarity. In vitro cellular uptake study demonstrated that FA-TQR-Co-PS increased drug accumulation into MCF-7/ADR cells via the TQR-induced P-gp efflux inhibition, and further improved targeting to tumor cells due to folate receptor-mediated endocytosis. Furthermore, the DOX and PTX cytotoxicity and proapoptotic activity against MCF-7/ADR was enhanced dramatically along with the administration of TQR, and the cell cycle was profoundly blocked in G2/M phase. The folate-targeted redox-responsive polymersomes loaded with chemotherapeutic drugs and P-gp inhibitor demonstrated noticeable synergistic effect against human MDR MCF-7 cells and successfully reversed drug resistance, which displayed high potential in overcoming tumor MDR as a novel drug delivery system.
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Wang N, Yang Y, Wang X, Tian X, Qin W, Wang X, Liang J, Zhang H, Leng X. Polydopamine as the Antigen Delivery Nanocarrier for Enhanced Immune Response in Tumor Immunotherapy. ACS Biomater Sci Eng 2019; 5:2330-2342. [DOI: 10.1021/acsbiomaterials.9b00359] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Ning Wang
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Ying Yang
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Xiaoli Wang
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Xinxin Tian
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Wenjuan Qin
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Xiaoxiao Wang
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Jiayi Liang
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Hailing Zhang
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Xigang Leng
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
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Leng X, Jiang H. Effects of arachidonic acid and its major prostaglandin derivatives on bovine myoblast proliferation, differentiation, and fusion. Domest Anim Endocrinol 2019; 67:28-36. [PMID: 30677541 DOI: 10.1016/j.domaniend.2018.12.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 12/03/2018] [Accepted: 12/13/2018] [Indexed: 12/23/2022]
Abstract
Many studies have shown positive effects of prostaglandins (PGs) on various steps of skeletal muscle formation such as myoblast proliferation and myotube hypertrophy. In animals, PGs are synthesized through the action of the rate-limiting enzymes cyclooxygenase (COX) -1 and COX-2 from arachidonic acid (AA), a conditionally essential fatty acid. As a step toward exploring the possibility of using dietary supplementation of AA to improve skeletal muscle growth in cattle, which are major meat-producing animals, we determined the effects of AA and its major PG derivatives PGE2, PGF2α, and PGI2 on proliferation, differentiation, and fusion of primary bovine myoblasts in vitro. In the proliferation experiment, myoblasts were cultured in a growth medium to which was added 10 μM AA, 1 μM PGE2, 1 μM PGF2α, 1 μM PGI2, or vehicle control for 24 h, and the proliferating cells were identified by 5-ethynyl-2'-deoxyuridine (EdU) labeling. This experiment revealed that AA, PGE2, PGF2α, and PGI2 each increased the number of proliferating cells by 13%, 24%, 16%, and 16%, respectively, compared to the control (n = 7, P < 0.05). In the differentiation and fusion test, myoblasts were induced to differentiate and fuse into myotubes in the presence of the aforementioned treatments for 0, 24, 48, and 72 h. Based on quantitative reverse transcription PCR analyses of mRNAs of myoblast differentiation and fusion markers (myogenin; myosin heavy chain 3; creatine kinase, muscle; myomaker) at 0, 24, and 48 h of differentiation, AA, PGE2, and PGF2α promoted myoblast differentiation (n = 6, P < 0.05). Based on Giemsa staining and counting the number of myotubes at 72 h of differentiation, PGE2 enhanced the number of formed myotubes by 14% (P < 0.05) compared to the control. Treating the myoblasts with AA and either the COX-1 and COX-2 common inhibitor indomethacin or the COX-2-specific inhibitor NS-398 reversed the stimulatory effect of AA on myoblast proliferation (n = 4, P < 0.05). Overall, this study demonstrates that exogenous AA stimulates bovine myoblast proliferation and differentiation in culture. The results of this study suggest that AA stimulates myoblast proliferation through its metabolites PGE2, PGF2α, or PGI2, and that AA stimulates myoblast differentiation through PGE2.
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Affiliation(s)
- X Leng
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA 24061, USA
| | - H Jiang
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA 24061, USA.
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Liu J, Jing H, Qin Y, Li B, Sun Z, Kong D, Leng X, Wang Z. Nonglutaraldehyde Fixation for off the Shelf Decellularized Bovine Pericardium in Anticalcification Cardiac Valve Applications. ACS Biomater Sci Eng 2019; 5:1452-1461. [DOI: 10.1021/acsbiomaterials.8b01311] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jing Liu
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Huimin Jing
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Yibo Qin
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Binhan Li
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Zhiting Sun
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Deling Kong
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
- Key Laboratory of Bioactive Materials of Ministry of Education, State Key Laboratory of Medicinal Chemical Biology, College of Life Science, Nankai University, Tianjin 300071, China
| | - Xigang Leng
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Zhihong Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
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Liu J, Qin Y, Wu Y, Sun Z, Li B, Jing H, Zhang C, Li C, Leng X, Wang Z, Kong D. The surrounding tissue contributes to smooth muscle cells’ regeneration and vascularization of small diameter vascular grafts. Biomater Sci 2019; 7:914-925. [DOI: 10.1039/c8bm01277f] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The surrounding tissue contributes to smooth muscle cells’ regeneration and vascularization in the vascular regeneration process.
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Liu X, Liu J, Liu D, Han Y, Xu H, Liu L, Leng X, Kong D. A cell-penetrating peptide-assisted nanovaccine promotes antigen cross-presentation and anti-tumor immune response. Biomater Sci 2019; 7:5516-5527. [DOI: 10.1039/c9bm01183h] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Exogenous antigens processed in the cytosol and subsequently cross-presented on major histocompatibility complex class I (MHC-I) molecules activate cytotoxic CD8+ lymphocytes (CTL), which are crucial in cancer immunotherapy.
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Affiliation(s)
- Xiaoxuan Liu
- Tianjin Key Laboratory of Biomaterials
- Institute of Biomedical Engineering
- Peking Union Medical College & Chinese Academy of Medical Sciences
- Tianjin 300192
- China
| | - Jiale Liu
- Tianjin Key Laboratory of Biomaterials
- Institute of Biomedical Engineering
- Peking Union Medical College & Chinese Academy of Medical Sciences
- Tianjin 300192
- China
| | - Dan Liu
- Tianjin Key Laboratory of Biomaterials
- Institute of Biomedical Engineering
- Peking Union Medical College & Chinese Academy of Medical Sciences
- Tianjin 300192
- China
| | - Yanfeng Han
- School of Biomedical Sciences
- University of Queensland
- St Lucia QLD 4072
- Australia
| | - Haiyan Xu
- Institute of Basic Medical Sciences Chinese Academy of Medical Sciences
- School of Basic Medicine Peking Union Medical College
- Beijing100730
- China
| | - Lanxia Liu
- Tianjin Key Laboratory of Biomaterials
- Institute of Biomedical Engineering
- Peking Union Medical College & Chinese Academy of Medical Sciences
- Tianjin 300192
- China
| | - Xigang Leng
- Tianjin Key Laboratory of Biomaterials
- Institute of Biomedical Engineering
- Peking Union Medical College & Chinese Academy of Medical Sciences
- Tianjin 300192
- China
| | - Deling Kong
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials of Ministry of Education
- College of Life Science
- Nankai University
- Tianjin 300071
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Leng X, Nicklas B, Williamson J, Kritchevsky S. DEPRESSIVE SYMPTOMS ARE RELATED TO PHYSICAL AND COGNITIVE FUNCTION IN OLDER ADULTS ACROSS MULTIPLE CO-MORBIDITIES. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- X Leng
- Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC
| | - B Nicklas
- Section on Gerontology and Geriatric Medicine, Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, NC
| | - J Williamson
- Gerontology and Geriatric Medicine, Wake Forest School of Medicine
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Zhang L, Qin Y, Zhang Z, Fan F, Huang C, Lu L, Wang H, Jin X, Zhao H, Kong D, Wang C, Sun H, Leng X, Zhu D. Dual pH/reduction-responsive hybrid polymeric micelles for targeted chemo-photothermal combination therapy. Acta Biomater 2018; 75:371-385. [PMID: 29777957 DOI: 10.1016/j.actbio.2018.05.026] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 05/15/2018] [Accepted: 05/15/2018] [Indexed: 02/04/2023]
Abstract
The combination of chemotherapy and photothermal therapy in multifunctional nanovesicles has emerged as a promising strategy to improve cancer therapeutic efficacy. Herein, we designed new pH/reduction dual-responsive and folate decorated polymeric micelles (FA Co-PMs) as theranostic nanocarrier to co-encapsulate doxorubicin (DOX) and indocyanine green (ICG) for targeted NIR imaging and chemo-photothermal combination therapy. The Co-PMs exhibited nano-sized structure (∼100 nm) with good monodispersity, high encapsulation efficiency of both ICG and DOX, triggered DOX release in response to acid pH and reduction environment, and excellent temperature conversion with laser irradiation. In vitro cellular uptake study indicated FA Co-PMs achieved significant targeting to BEL-7404 cells via folate receptor-mediated endocytosis, and laser-induced hyperthermia further enhanced drug accumulation into cancer cells. In vivo biodistribution study indicated that FA Co-PMs prolonged drug circulation and enhanced drug accumulation into the tumor via EPR effect and FA targeting. Furthermore, the ICG-based photo-triggered hyperthermia combined with DOX-based chemotherapy synergistically induced the BEL-7404 cell death and apoptosis, and efficiently suppressed the BEL-7404 xenografted tumor growth while significantly reduced systemic toxicity in vivo. Therefore, the designed dual-responsive Co-PMs were promising theranostic nanocarriers for versatile antitumor drug delivery and imaging-guided cancer chemo-photothermal combination therapy. STATEMENT OF SIGNIFICANCE The combination of chemotherapy and photothermal therapy in multifunctional nanovesicles has emerged as a promising strategy to improve cancer therapeutic efficacy. Herein, we designed novel pH/reduction dual-responsive and folate decorated polymeric micelles (FA Co-PMs) as theranostic nanocarrier to co-encapsulate doxorubicin (DOX) and indocyanine green (ICG) for targeted NIR imaging and chemo-photothermal combination therapy. The Co-PMs triggered DOX release in response to acid pH and reduction environment and exhibited excellent temperature conversion with laser irradiation. The results indicated FA Co-PMs achieved significant targeting to BEL-7404 cells in vitro and efficiently suppressed the BEL-7404 xenografted tumor growth while significantly reduced systemic toxicity in vivo. Therefore, the designed dual-responsive Co-PMs displayed great potential in imaging-guided cancer chemo-photothermal combination therapy as theranostic nanocarriers.
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Zhu D, Fan F, Huang C, Zhang Z, Qin Y, Lu L, Wang H, Jin X, Zhao H, Yang H, Zhang C, Yang J, Liu Z, Sun H, Leng X, Kong D, Zhang L. Bubble-generating polymersomes loaded with both indocyanine green and doxorubicin for effective chemotherapy combined with photothermal therapy. Acta Biomater 2018; 75:386-397. [PMID: 29793073 DOI: 10.1016/j.actbio.2018.05.033] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 04/20/2018] [Accepted: 05/20/2018] [Indexed: 12/20/2022]
Abstract
The combination of chemotherapy and photothermaltherapy (PTT) via stimuli-responsive nanovesicles has great potential in tumor treatment. In the present study, bubble-generating polymersomes, which can generate bubbles in response to low pH or hyperthermia, were fabricated to simultaneously encapsulate chemotherapeutic drug and photosensitizing agent for the synergistic chemo-photothermal tumor therapy. Photosensitizer indocyanine green (ICG) was encapsulated into the bilayer of polymersomes formed by amphiphilic triblock copolymer PCL8000-PEG8000-PCL8000 through thin film re-hydration method, while chemotherapeutic doxorubicin (DOX) was loaded into the hydrophilic lumen using a transmembrane ammonium bicarbonate gradient loading procedure. Under acidic condition or laser irradiation, the ammonium bicarbonate (NH4HCO3) encapsulated in the bubble-generating DOX-ICG-co-delivery polymersomes (BG-DIPS) would decompose to produce CO2 bubbles, resulting in destruction of vesicle structure and rapid drug release. In vitro drug release study confirmed that acidic environment and NIR laser irradiation could accelerate DOX release from the BG-DIPS. Cellular uptake study indicated that laser-induced hyperthermia highly enhanced endocytosis of BG-DIPS into 4T1-Luc cancer cells. In vitro cytotoxicity study demonstrated that BG-DIPS exhibited much higher cytotoxicity than free drugs under laser irradiation. In vivo biodistribution study indicated that BG-DIPS could accumulate in the tumor region, prolong drug retention, and increase photothermal conversion efficiency. Furthermore, in vivo antitumor study showed that BG-DIPS with laser irradiation efficiently inhibited 4T1-Luc tumor growth with reduced systemic toxicity. Hence, the formulated bubble-generating polymersomes system was a superior multifunctional nanocarrier for stimuli-response controlled drug delivery and combination chemo-photothermal tumor therapy. STATEMENT OF SIGNIFICANCE The combination of chemotherapy and photothermaltherapy via stimuli-responsive nanovesicles has great potential in tumor treatment. Herein, bubble-generating polymersomes, which can generate bubbles in response to low pH or hyperthermia, were fabricated to simultaneously encapsulate chemotherapeutic drug (DOX) and photosensitizing agent (ICG) for the synergistic chemo-photothermal tumor therapy. The results in vitro and in vivo demonstrated that bubble-generating DOX-ICG-co-delivery polymersomes (BG-DIPS) would accelerate DOX release from the BG-DIPS and accumulate in the tumor region, prolong drug retention, and increase photothermal conversion efficiency. BG-DIPS with laser irradiation could efficiently inhibited 4T1-Luc tumor growth with reduced systemic toxicity. Hence, the formulated bubble-generating polymersomes system was a superior multifunctional nanocarrier for stimuli-response controlled drug delivery and combination chemo-photothermal tumor therapy.
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Zheng W, Leng X, Vinsky M, Li C, Jiang H. Association of body weight gain with muscle, fat, and liver expression levels of growth hormone receptor, insulin-like growth factor I, and beta-adrenergic receptor mRNAs in steers. Domest Anim Endocrinol 2018; 64:31-37. [PMID: 29730537 DOI: 10.1016/j.domaniend.2018.03.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 01/26/2018] [Accepted: 03/30/2018] [Indexed: 10/17/2022]
Abstract
The physiological basis of feed efficiency is unclear. Administration of GH or beta-adrenergic agonists improves feed efficiency in various animals. The objective of this study was to test the hypothesis that more efficient cattle have greater expression of GH receptor (GHR) or beta-adrenergic receptor (ADRB) mRNA in skeletal muscle, fat, and liver, the major target tissues of GH and beta-adrenergic agonists. Fifty Angus steers were fed a finishing diet for 75 d to determine residual feed intake (RFI). Carcass measures, skeletal muscle, subcutaneous fat, and liver samples were collected from the top 10 high-RFI steers and top 10 low-RFI steers at slaughter. Abundances of GHR, insulin-like growth factor I (IGF1), IGF1 receptor (IGF1R), beta-1 adrenergic receptor (ADRB1), ADRB2, and ADRB3 mRNAs were quantified by real-time reverse transcription-PCR. Low-RFI steers consumed 11% less dry matter intake than high-RFI steers (P = 0.004). Low- and high-RFI steers, however, did not differ in ADG or other growth or carcass measures. Low-RFI steers had a tendency to have smaller birth weights than high-RFI steers (P = 0.089). The expression levels of GHR, IGF1, IGF1R, ADRB1, ADRB2, and ADRB3 mRNAs in muscle, fat, and liver were neither different (P > 0.1) between high- and low-RFI steers nor correlated (P > 0.1) with RFI. These results do not support our original hypothesis. However, the expression levels of GHR, IGF1, and IGF1R mRNAs in muscle and fat were positively correlated with ADG (r = 0.52 to 0.65, P = 0.002 to 0.02), whereas the expression levels of GHR mRNA (r = -0.50, P = 0.03) and IGF1 mRNA (r = -0.47, P = 0.04) in the liver were negatively correlated with ADG. These results suggest that the GHR, IGF1, and IGF1R mRNA expression levels in the muscle and fat have a positive effect, whereas the GHR and IGF1 mRNA expression levels in the liver have a negative effect on postweaning body weight gain in cattle.
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MESH Headings
- Adipose Tissue/metabolism
- Animals
- Body Composition/physiology
- Cattle
- Gene Expression Regulation/physiology
- Insulin-Like Growth Factor I/genetics
- Insulin-Like Growth Factor I/metabolism
- Liver/metabolism
- Male
- Muscle, Skeletal/metabolism
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Receptors, Adrenergic, beta/genetics
- Receptors, Adrenergic, beta/metabolism
- Receptors, Somatomedin/genetics
- Receptors, Somatomedin/metabolism
- Receptors, Somatotropin/genetics
- Receptors, Somatotropin/metabolism
- Weight Gain/physiology
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Affiliation(s)
- W Zheng
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA, USA; College of Animal Sciences, Nanjing Agricultural University, Nanjing, China
| | - X Leng
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA, USA
| | - M Vinsky
- Agriculture and Agri-Food Canada, Lacombe Research and Development Centre, Lacombe, AB, Canada
| | - C Li
- Agriculture and Agri-Food Canada, Lacombe Research and Development Centre, Lacombe, AB, Canada; Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada.
| | - H Jiang
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA, USA.
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Dong X, Sun Z, Liang J, Wang H, Zhu D, Leng X, Wang C, Kong D, Lv F. A visible fluorescent nanovaccine based on functional genipin crosslinked ovalbumin protein nanoparticles. Nanomedicine: Nanotechnology, Biology and Medicine 2018; 14:1087-1098. [DOI: 10.1016/j.nano.2018.02.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 01/29/2018] [Accepted: 02/10/2018] [Indexed: 01/11/2023]
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Wang Z, Li M, Wang Y, Xu D, Wang Q, Zhang S, Zhao J, Su J, Wu Q, Shi Q, Leng X, Zhang W, Tian X, Zhao Y, Zeng X. Long-term mortality and morbidity of patients with systemic lupus erythematosus: a single-center cohort study in China. Lupus 2018; 27:864-869. [PMID: 29308727 DOI: 10.1177/0961203317751852] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Z Wang
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - M Li
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Y Wang
- Department of Epidemiology and Bio-statistics, Institute of Basic Medical Sciences, China Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - D Xu
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Q Wang
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - S Zhang
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - J Zhao
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - J Su
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Q Wu
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Q Shi
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - X Leng
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - W Zhang
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - X Tian
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Y Zhao
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - X Zeng
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
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Leng X, Lan L, Ip HL, Fan F, Ma SH, Ma K, Liu H, Yan Z, Liu J, Abrigo J, Soo YOY, Liebeskind DS, Wong KS, Leung TW. Translesional pressure gradient and leptomeningeal collateral status in symptomatic middle cerebral artery stenosis. Eur J Neurol 2017; 25:404-410. [PMID: 29171118 DOI: 10.1111/ene.13521] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 11/20/2017] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND PURPOSE Leptomeningeal collateral (LMC) status governs the prognosis of large artery occlusive stroke, although factors determining LMC status are not fully elucidated. The aim was to investigate metrics affecting LMC status in such patients by using computational fluid dynamics (CFD) models based on computed tomography angiography (CTA). METHODS In this cross-sectional study, patients with recent ischaemic stroke or transient ischaemic attack attributed to atherosclerotic M1 middle cerebral artery (MCA) stenosis (50%-99%) were recruited. Demographic, clinical and imaging data of these patients were collected. Ipsilesional LMC status was graded as good or poor by assessing the laterality of anterior and posterior cerebral arteries in CTA. A CFD model based on CTA was constructed to reflect focal hemodynamics in the distal internal carotid artery, M1 MCA and A1 anterior cerebral artery. Pressure gradients were calculated across culprit MCA stenotic lesions in CFD models. Predictors for good LMC status were sought in univariate and multivariate analyses. RESULTS Amongst the 85 patients enrolled (mean age 61.5 ± 10.9 years), 38 (44.7%) had good ipsilesional LMC status. The mean pressure gradient across MCA lesions was 14.8 ± 18.1 mmHg. Advanced age (P = 0.030) and a larger translesional pressure gradient (P = 0.029) independently predicted good LMCs. A lower fasting blood glucose level also showed a trend for good LMCs (P = 0.058). CONCLUSIONS Our study suggested a correlation between translesional pressure gradient and maturation of LMCs in intracranial atherosclerotic disease. Further studies with more exquisite and dynamic monitoring of cerebral hemodynamics and LMC evolution are needed to verify the current findings.
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Affiliation(s)
- X Leng
- Division of Neurology, Department of Medicine and Therapeutics, Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China.,Shenzhen Research Institute, Chinese University of Hong Kong, Shenzhen, China
| | - L Lan
- Division of Neurology, Department of Medicine and Therapeutics, Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - H L Ip
- Division of Neurology, Department of Medicine and Therapeutics, Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - F Fan
- Division of Neurology, Department of Medicine and Therapeutics, Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - S H Ma
- Division of Neurology, Department of Medicine and Therapeutics, Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - K Ma
- Division of Neurology, Department of Medicine and Therapeutics, Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - H Liu
- Division of Neurology, Department of Medicine and Therapeutics, Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China.,Department of Imaging and Interventional Radiology, Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Z Yan
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - J Liu
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - J Abrigo
- Department of Imaging and Interventional Radiology, Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Y O Y Soo
- Division of Neurology, Department of Medicine and Therapeutics, Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - D S Liebeskind
- Neurovascular Imaging Research Core, Department of Neurology, University of California, Los Angeles, CA, USA
| | - K S Wong
- Division of Neurology, Department of Medicine and Therapeutics, Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - T W Leung
- Division of Neurology, Department of Medicine and Therapeutics, Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
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Liu X, Zhu L, Ma J, Qiao X, Zhu D, Liu L, Leng X. Target-specific delivery of siRNA into hepatoma cells' cytoplasm by bifunctional carrier peptide. Drug Deliv Transl Res 2017; 7:147-155. [PMID: 27896668 DOI: 10.1007/s13346-016-0348-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 02/07/2023]
Abstract
RNA interference (RNAi) is among the most potential approach for the therapy of hepatocellular carcinoma and the major barrier hindering siRNA therapeutics is the low efficiency of delivery to the desired cells. The current study aimed at developing a novel peptide for more efficient hepatoma targeted siRNA delivery, by combining luteinizing hormone-releasing hormone with hepatoma targeting specificity and MPG△NLS with cytoplasm-delivery tendency. The developed bifunctional peptide LHRH-MPG△NLS and siRNA were mixed together and resulted in LHRH-MPG△NLS/siRNA polyplexes through self-assembly. The polyplexes were characterized by agarose gel retardation and dynamic light scatting analysis. Hepatoma targeting specificity was analyzed with the GE IN Cell Analyzer 2000 High-Content Cellular Analysis System after cell transfection, and the effect of RNA interference was detected by RT-PCR. The results demonstrated that LHRH-MPG△NLS was able to assemble with siRNA to form stable and nano-sized peptide/siRNA polyplexes, which could inhibit the expression of the target gene and was essentially non-cytotoxic, as compared with the commercial transfection reagent lipofectamine 2000.
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Affiliation(s)
- Xiaoxuan Liu
- Lab of Bioengineering, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Materials, No.236, Baidi Road, Nankai District, Tianjin, 300192, People's Republic of China
| | - Lin Zhu
- Lab of Bioengineering, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Materials, No.236, Baidi Road, Nankai District, Tianjin, 300192, People's Republic of China
| | - Jingjing Ma
- Lab of Bioengineering, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Materials, No.236, Baidi Road, Nankai District, Tianjin, 300192, People's Republic of China
| | - Xinxiao Qiao
- Lab of Bioengineering, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Materials, No.236, Baidi Road, Nankai District, Tianjin, 300192, People's Republic of China
| | - Dunwan Zhu
- Lab of Bioengineering, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Materials, No.236, Baidi Road, Nankai District, Tianjin, 300192, People's Republic of China
| | - Lanxia Liu
- Lab of Bioengineering, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Materials, No.236, Baidi Road, Nankai District, Tianjin, 300192, People's Republic of China.
| | - Xigang Leng
- Lab of Bioengineering, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Biomedical Materials, No.236, Baidi Road, Nankai District, Tianjin, 300192, People's Republic of China.
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Yang F, Zhang H, Leng X, Hao F, Wang L. miR-146b measurement in FNA to distinguish papillary thyroid cancer from benign thyroid masses. Br J Biomed Sci 2017; 75:43-45. [PMID: 28937915 DOI: 10.1080/09674845.2017.1347336] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- F Yang
- Department of Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - H Zhang
- Department of Thyroid Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - X Leng
- Department of Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - F Hao
- Department of Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - L Wang
- Department of Ultrasound, Qilu Hospital of Shandong University, Qingdao, China
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Hu C, Chen Z, Wu S, Han Y, Wang H, Sun H, Kong D, Leng X, Wang C, Zhang L, Zhu D. Micelle or polymersome formation by PCL-PEG-PCL copolymers as drug delivery systems. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.07.020] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zheng W, Leng X, Vinsky M, Li C, Jiang H. 202 Residual feed intake is not associated with muscle, fat, or liver expression of growth hormone receptor, insulin-like growth factor i, or beta-adrenergic receptor mRNA in Angus steers. J Anim Sci 2017. [DOI: 10.2527/asasann.2017.202] [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] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Zhu D, Wu S, Hu C, Chen Z, Wang H, Fan F, Qin Y, Wang C, Sun H, Leng X, Kong D, Zhang L. Folate-targeted polymersomes loaded with both paclitaxel and doxorubicin for the combination chemotherapy of hepatocellular carcinoma. Acta Biomater 2017. [PMID: 28627436 DOI: 10.1016/j.actbio.2017.06.017] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Combination chemotherapy is a promising method of improving cancer treatment, but the distinct pharmacokinetics of combined drugs and non-specific drug distribution slow down the development in the clinic. In this study, folate (FA) receptor-targeted polymersomes with apparent bilayered lamellar structure were successfully developed to co-encapsulate a hydrophobic-hydrophilic chemotherapeutic drug pair (PTX and DOX) in a single vesicle for enhancing the combination chemotherapeutic effect. Hydrophobic PTX was loaded into the thick hydrophobic lamellar membrane by the self-assembly of triblock copolymer PCL8000-PEG8000-PCL8000, while hydrophilic DOX was encapsulated into the hydrophilic reservoir using a trans-membrane ammonium sulfate gradient method. In vitro release study indicated that the drugs were released from the polymersomes in a controlled and sustained manner. Cellular uptake study indicated that FA-targeted Co-PS had higher internalization efficiency in FA receptor-overexpressing BEL-7404 cells than non-targeted Co-PS. In vitro cytotoxicity assay demonstrated that FA-targeted Co-PS exhibited less cytotoxic effect than free drug cocktail, but suppressed the growth of tumor cells more efficiently than non-targeted Co-PS. Ex vivo imaging biodistribution studies revealed that FA-targeted Co-PS led to highly efficient targeting and accumulation in the BEL-7404 xenograft tumor. Furthermore, the in vivo antitumor study showed that the combination chemotherapy of polymersomes to BEL-7404 tumor via intravenous injection was superior to free drug cocktail treatment, and the FA-targeted Co-PS exhibited significantly higher tumor growth inhibition than non-targeted Co-PS group. Therefore, the newly developed FA-targeted co-delivery polymersomes hold great promise for simultaneous delivery of multiple chemotherapeutics and would have great potential in tumor-targeting and combination chemotherapy. STATEMENT OF SIGNIFICANCE Combination chemotherapy is a promising method of improving cancer treatment, but the distinct pharmacokinetics of combined drugs and non-specific drug distribution slow down the development in the clinic. In our study, novel folate-targeted co-delivery polymersomes (Co-PS) were successfully developed to encapsulate a hydrophobic-hydrophilic chemotherapeutic drug pair (paclitaxel and doxorubicin) into the different compartments of the vesicle. In vivo studies revealed that the combination chemotherapy of polymersomes to BEL-7404 xenograft tumor via intravenous injection was superior to free drug cocktail treatment, and the FA-targeted Co-PS exhibited significantly higher tumor growth inhibition than non-targeted Co-PS group. Therefore, the newly developed FA-targeted co-delivery polymersomes hold great promise for simultaneous delivery of multiple chemotherapeutics and would have great potential in tumor-targeting and combination chemotherapy.
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Affiliation(s)
- Dunwan Zhu
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, PR China
| | - Shengjie Wu
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, PR China
| | - Chunyan Hu
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, PR China
| | - Zhuo Chen
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, PR China
| | - Hai Wang
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, PR China
| | - Fan Fan
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, PR China
| | - Yu Qin
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, PR China
| | - Chun Wang
- Department of Biomedical Engineering, University of Minnesota, 7-116 Hasselmo Hall, 312 Church Street S.E, Minneapolis, MN 55455, USA
| | - Hongfan Sun
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, PR China
| | - Xigang Leng
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, PR China
| | - Deling Kong
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, PR China
| | - Linhua Zhang
- Tianjin Key Laboratory of Biomaterials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, PR China.
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Leng X, Jiang H. 362 Identification of a beneficial role of proteasome-mediated protein degradation in the differentiation of bovine myoblasts into myotubes. J Anim Sci 2017. [DOI: 10.2527/asasann.2017.362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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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Song Y, Cen X, Yang H, Wu M, Shen Y, Lei T, Leng X, Ping L, Xie Y, Zhu J. TREATMENT STRATEGIES AND PROGNOSTIC FACTORS OF PRIMARY GASTRIC DIFFUSE LARGE B CELL LYMPHOMA: A RETROSPECTIVE STUDY OF 303 CASES FROM CHINA LYMPHOMA PATIENT REGISTRY. Hematol Oncol 2017. [DOI: 10.1002/hon.2439_137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Y. Song
- Department of Lymphoma, Key laboratory of Carcinogenesis and Translational Research (Ministry of Education); Peking University Cancer Hospital & Institute; Beijing China
| | - X. Cen
- Department of Hematology; Peking University First Hospital; Beijing China
| | - H. Yang
- Department of Lymphoma; Zhejiang Cancer Hospital; Hangzhou China
| | - M. Wu
- Department of Lymphoma, Key laboratory of Carcinogenesis and Translational Research (Ministry of Education); Peking University Cancer Hospital & Institute; Beijing China
| | - Y. Shen
- Department of Hematology; Peking University First Hospital; Beijing China
| | - T. Lei
- Department of Lymphoma; Zhejiang Cancer Hospital; Hangzhou China
| | - X. Leng
- Department of Lymphoma, Key laboratory of Carcinogenesis and Translational Research (Ministry of Education); Peking University Cancer Hospital & Institute; Beijing China
| | - L. Ping
- Department of Lymphoma, Key laboratory of Carcinogenesis and Translational Research (Ministry of Education); Peking University Cancer Hospital & Institute; Beijing China
| | - Y. Xie
- Department of Lymphoma, Key laboratory of Carcinogenesis and Translational Research (Ministry of Education); Peking University Cancer Hospital & Institute; Beijing China
| | - J. Zhu
- Department of Lymphoma, Key laboratory of Carcinogenesis and Translational Research (Ministry of Education); Peking University Cancer Hospital & Institute; Beijing China
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Song Y, Jia J, Wu M, Leng X, Lin N, Xie Y, Zheng W, Wang X, Ping L, Tu M, Ying Z, Zhang C, Liu W, Deng L, Zhu J. FIRST-LINE L-ASPARAGINASE-BASED CHEMOTHERAPY PLUS RADIOTHERAPY IS ACTIVE IN STAGE I/II EXTRANODAL NK/T-CELL LYMPHOMA: RESULTS FROM PEKING UNIVERSITY CANCER HOSPITAL. Hematol Oncol 2017. [DOI: 10.1002/hon.2437_113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Y. Song
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - J. Jia
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - M. Wu
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - X. Leng
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - N. Lin
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - Y. Xie
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - W. Zheng
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - X. Wang
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - L. Ping
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - M. Tu
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - Z. Ying
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - C. Zhang
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - W. Liu
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - L. Deng
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
| | - J. Zhu
- Department of Lymphoma; Peking University Cancer Hospital & Institute; Beijing China
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Song Y, Cen X, Wu M, Shen Y, Leng X, Ping L, Xie Y, Zhu J. CLINICAL FEATURES AND PROGNOSES OF PRIMARY GASTRIC DIFFUSE LARGE B CELL LYMPHOMA: A RETROSPECTIVE ANALYSIS OF 139 CHINESE CASES WITH IMMUNOPHENOTYPING FROM CLAP. Hematol Oncol 2017. [DOI: 10.1002/hon.2439_138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Y. Song
- Department of Lymphoma, Key laboratory of Carcinogenesis and Translational Research (Ministry of Education); Peking University Cancer Hospital & Institute; Beijing China
| | - X. Cen
- Department of Hematology; Peking University First Hospital; Beijing China
| | - M. Wu
- Department of Lymphoma, Key laboratory of Carcinogenesis and Translational Research (Ministry of Education); Peking University Cancer Hospital & Institute; Beijing China
| | - Y. Shen
- Department of Hematology; Peking University First Hospital; Beijing China
| | - X. Leng
- Department of Lymphoma, Key laboratory of Carcinogenesis and Translational Research (Ministry of Education); Peking University Cancer Hospital & Institute; Beijing China
| | - L. Ping
- Department of Lymphoma, Key laboratory of Carcinogenesis and Translational Research (Ministry of Education); Peking University Cancer Hospital & Institute; Beijing China
| | - Y. Xie
- Department of Lymphoma, Key laboratory of Carcinogenesis and Translational Research (Ministry of Education); Peking University Cancer Hospital & Institute; Beijing China
| | - J. Zhu
- Department of Lymphoma, Key laboratory of Carcinogenesis and Translational Research (Ministry of Education); Peking University Cancer Hospital & Institute; Beijing China
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Abstract
Monitoring drug release and therapeutic efficacy is crucial for developing drug delivery systems. Our preliminary study demonstrated that, as compared with pristine multiwalled carbon nanotubes (MWCNTs), transactivator of transcription (TAT)-chitosan functionalized MWCNTs (MWCNTs-TC) were a more promising candidate for drug delivery in cancer therapy. In the present study, a MWCNTs/TC-based drug delivery system was developed for an anticancer drug, doxorubicin (DOX). The drug loading and in vitro release profiles, cellular uptake and cytotoxicity were assessed. More importantly, the in vivo drug release and antitumor effect of MWCNTs/DOX/TC were evaluated by noninvasive fluorescence and bioluminescence imaging. It was demonstrated that MWCNTs/DOX/TC can be efficiently taken up by BEL-7402 hepatoma cells. The release of DOX from MWCNTs/DOX/TC was faster under lower pH condition, which was beneficial for intrcellular drug release. The in vivo release process of DOX and antitumor effect in animal model were monitored simultaneously by noninvasive fluorescence and luminescence imaging, which demonstrated the application potential of MWCNTs/DOX/TC for cancer therapy.
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Affiliation(s)
- Xia Dong
- a Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin , PR China
| | - Zhiting Sun
- a Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin , PR China
| | - Xiaoxiao Wang
- a Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin , PR China
| | - Dunwan Zhu
- a Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin , PR China
| | - Lanxia Liu
- a Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin , PR China
| | - Xigang Leng
- a Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin , PR China
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Jiang H, Settlage R, Leng X, Hou Y. 0898 Identification of novel genes and mechanisms involved in bovine myogenic differentiation. J Anim Sci 2016. [DOI: 10.2527/jam2016-0898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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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49
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Leng X, Jiang H. 0879 Effects of arachidonic acid and prostaglandins on proliferation, differentiation, and fusion of bovine myoblasts. J Anim Sci 2016. [DOI: 10.2527/jam2016-0879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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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50
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Leng X, Bollinger AT, Božović I. Purely electronic mechanism of electrolyte gating of indium tin oxide thin films. Sci Rep 2016; 6:31239. [PMID: 27506371 PMCID: PMC4979031 DOI: 10.1038/srep31239] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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: 03/15/2016] [Accepted: 07/15/2016] [Indexed: 11/21/2022] Open
Abstract
Epitaxial indium tin oxide films have been grown on both LaAlO3 and yttria-stabilized zirconia substrates using RF magnetron sputtering. Electrolyte gating causes a large change in the film resistance that occurs immediately after the gate voltage is applied, and shows no hysteresis during the charging/discharging processes. When two devices are patterned next to one another and the first one gated through an electrolyte, the second one shows no changes in conductance, in contrast to what happens in materials (like tungsten oxide) susceptible to ionic electromigration and intercalation. These findings indicate that electrolyte gating in indium tin oxide triggers a pure electronic process (electron depletion or accumulation, depending on the polarity of the gate voltage), with no electrochemical reactions involved. Electron accumulation occurs in a very thin layer near the film surface, which becomes highly conductive. These results contribute to our understanding of the electrolyte gating mechanism in complex oxides and may be relevant for applications of electric double layer transistor devices.
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Affiliation(s)
- X Leng
- Brookhaven National Laboratory, Upton NY 11973, USA
| | | | - I Božović
- Brookhaven National Laboratory, Upton NY 11973, USA.,Applied Physics Department, Yale University, New Haven CT 06520, USA
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