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Aljuffali IA, Lin YK, Fang JY. Noninvasive approach for enhancing small interfering RNA delivery percutaneously. Expert Opin Drug Deliv 2015; 13:265-80. [DOI: 10.1517/17425247.2016.1121988] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Zeng Y, Zhu L, Han Q, Liu W, Mao X, Li Y, Yu N, Feng S, Fu Q, Wang X, Du Y, Zhao RC. Preformed gelatin microcryogels as injectable cell carriers for enhanced skin wound healing. Acta Biomater 2015; 25:291-303. [PMID: 26234487 DOI: 10.1016/j.actbio.2015.07.042] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 07/18/2015] [Accepted: 07/29/2015] [Indexed: 01/06/2023]
Abstract
Wound dressings of cell-laden bulk hydrogel or scaffold were mainly applied for enhanced cell engraftment in contrast to free cell injection. However, dressing of cells laden in biomaterials on wound surface might not effectively and timely exert functions on deep or chronic wounds where insufficient blood supply exists. Previously, we developed injectable gelatin microcryogels (GMs) which could load cells for enhanced cell delivery and cell therapy. In this study, biological changes of human adipose-derived stem cells (hASCs) laden in GMs were compared in varied aspects with traditional two dimensional (2D) cell culture, such as cell phenotype markers, stemness genes, differentiation, secretion of growth factors, cell apoptosis and cell memory by FACS, QRT-PCR and ELISA, that demonstrated the priming effects of GMs on upregulation of stemness genes and improved secretion of growth factors of hASCs for potential augmented wound healing. In a full-thickness skin wound model in nude mice, multisite injection and dressing of hASCs-laden GMs could significantly accelerate the healing compared to free cell injection. Bioluminescence imaging and protein analysis indicated improved cell retention and secretion of multiple growth factors. Our study suggests that GMs as primed injectable 3D micro-niches represent a new cell delivery methodology for skin wound healing which could not only benefit on the recovery of wound bed but also play direct effects on wound basal layer for healing enhancement. Injectable GMs as facile multisite cell delivery approach potentially provide new minimally-invasive therapeutic strategy for refractory wounds such as diabetic ulcer or radiative skin wound. STATEMENT OF SIGNIFICANCE This work applied a type of elastic micro-scaffold (GMs) to load and prime hMSCs for skin wound healing. Due to the injectability of GMs, the 3D cellular micro-niches could simply realize minimally-invasive and multisite cell delivery approach for accelerating the wound healing process superior to free cell injection. The biological features of MSCs has been thoroughly characterized during 3D culture in GMs (i.e. cell proliferation, characterization of cell surface markers, stemness of MSCs in GMs, differentiation of MSCs in GMs, secretion of MSCs in GMs, induced apoptosis of MSCs in GMs). Multiple methods such as bioluminescent imaging, immunohistochemistry, immunofluorescence, qRT-PCR, ELSA and western blot were used to assess the in vivo results between groups.
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Affiliation(s)
- Yang Zeng
- Department of Biomedical Engineering, School of Medicine, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Tsinghua University, Beijing 100084, China
| | - Lin Zhu
- Division of Plastic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100005, China
| | - Qin Han
- Center of Excellence in Tissue Engineering, Institute of Basic Medical Sciences and School of Basic Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100005, China
| | - Wei Liu
- Department of Biomedical Engineering, School of Medicine, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Tsinghua University, Beijing 100084, China
| | - Xiaojing Mao
- Center of Excellence in Tissue Engineering, Institute of Basic Medical Sciences and School of Basic Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100005, China
| | - Yaqian Li
- Department of Biomedical Engineering, School of Medicine, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Tsinghua University, Beijing 100084, China
| | - Nanze Yu
- Division of Plastic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100005, China
| | - Siyu Feng
- School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China
| | - Qinyouen Fu
- School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China
| | - Xiaojun Wang
- Division of Plastic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100005, China.
| | - Yanan Du
- Department of Biomedical Engineering, School of Medicine, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Tsinghua University, Beijing 100084, China.
| | - Robert Chunhua Zhao
- Center of Excellence in Tissue Engineering, Institute of Basic Medical Sciences and School of Basic Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100005, China; Center of Translational Medicine Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China.
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Kameyama H, Udagawa O, Hoshi T, Toukairin Y, Arai T, Nogami M. The mRNA expressions and immunohistochemistry of factors involved in angiogenesis and lymphangiogenesis in the early stage of rat skin incision wounds. Leg Med (Tokyo) 2015; 17:255-60. [PMID: 25794881 DOI: 10.1016/j.legalmed.2015.02.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 02/24/2015] [Accepted: 02/25/2015] [Indexed: 10/23/2022]
Abstract
Wound healing evaluation is important in forensic pathology, in which angiogenesis plays an important role. We have already shown that vascular endothelial growth factor A (VEGF) is produced in the rat skin incision wounds by neutrophils, endothelial cells, and fibroblasts. In this study, we assessed the changes in the mRNA expressions of various factors possibly involved in angiogenesis including angiopoietin (ANGPT) 1 and 2, cadherin 5 (CDH5), granulocyte-macrophage colony stimulating factor (CSF2/GM-CSF), granulocyte colony stimulating factor (CSF3/G-CSF), chemokine (C-X-C motif) ligand 2 (CXCL2), chemokine (C-X-C motif) ligand12 (CXCL12/SDF1), endothelin 1 (ET1), fibroblast growth factor 1 (FGF 1), hepatocyte growth factor (HGF), hypoxia inducible factor 1 alpha (HIF1a), leptin, matrix metallopepitidase 9 (MMP9), serpine/plasminogen activator inhibitor1 (PAI1), platelet-derived growth factor-A (PDGF-A), transforming growth factor alpha and beta 1 (TGFa and b1), tenomodulin (TNMD), and troponin I type 2 (TNNI2) in the early stage of the rat skin incision wounds by real time RT-PCR. Factors reported to be involved in lymphangiogenesis such as fibroblast growth factor 2 (FGF 2), c-fos induced growth factor (FIGF/VEGF-D), forkhead box C2 (FOXC2), and prospero homeobox 1 (PROX1) were also studied. One and 3 days after the dorsal skin incisions, wounds on male Sprague-Dawley rats showed the statistically significant increases in the mRNA expressions for CXCL2, CSF3, MMP9, PAI1, and CSF2, whereas TGFa, TNNI2, FGF1, TNMD, leptin, and CXCL12 showed the statistically significant decreases. Interestingly, lymphgangiogenic factors FOXC2, PROX1, and FGF2 also showed the statistically significant decreases. In situ hybridization and immunohistochemistry showed the mRNA and protein positivity in endothelial cells, fibroblasts, and some leukocytes at the bottom of the wound tissue for PAI1, CSF3, and MMP9, 1 day after the skin incisions. Our novel findings show the possible involvement of several factors involved in angiogenesis and lymphangiogenesis in the early stage of wound healing process, which may be useful for forensic wound evaluations.
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Affiliation(s)
- Hiroshi Kameyama
- Criminal Investigation Laboratory, Saitama Prefectural Police Headquarters, 3-15-1, Takasago, Urawa-ku, Saitama City, Saitama 330-8533, Japan; Department of Legal Medicine, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Orie Udagawa
- Department of Legal Medicine, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Tomoaki Hoshi
- Department of Legal Medicine, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Yoko Toukairin
- Department of Legal Medicine, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Tomomi Arai
- Department of Legal Medicine, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo 173-8605, Japan
| | - Makoto Nogami
- Department of Legal Medicine, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo 173-8605, Japan.
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Chen WB, Huang FT, Zhuang YY, Tang J, Zhuang XH, Cheng WJ, Gu ZQ, Zhang SN. Silencing of GATA6 suppresses SW1990 pancreatic cancer cell growth in vitro and up-regulates reactive oxygen species. Dig Dis Sci 2013; 58:2518-27. [PMID: 23832791 DOI: 10.1007/s10620-013-2752-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2012] [Accepted: 06/06/2013] [Indexed: 01/02/2023]
Abstract
BACKGROUND/AIMS Pancreatic cancer has the worst prognosis of any gastrointestinal cancer with a mortality rate approaching its incidence. Previous studies have indicated that GATA6 plays a key role in organ development and function, and that abnormal expression of GATA6 may induce tumorigenesis. Meanwhile, it has been reported that generation of reactive oxygen species contributes to carcinogenesis. In this study, we set out to study the role of GATA6 expression on proliferation and apoptosis of pancreatic cancer cells and the role of reactive oxygen species. METHODS Four target miRNA sequences against GATA6 mRNA were synthesized and used to transfect SW1990 cells. Then, GATA6 expression in SW1990 cells was examined by western blot and quantative real-time polymerase chain reaction. Cell proliferation was examined by WST-8 and colony formation assay. Cell cycle progression and apoptosis were measured by flow cytometry. We also measured the generation of reactive oxygen species by immunofluorescence and flow cytometry. RESULTS RNA interference against GATA6 successfully inhibited mRNA and protein expression of GATA6 in the SW1990 pancreatic cancer cell line. Silencing of GATA6 by RNA interference inhibited cell proliferation and increased apoptosis of SW1990, and enhanced the expression of reactive oxygen species. CONCLUSIONS These results suggest that the RNA interference approach against GATA6 may be an effective therapeutic approach for treatment of pancreatic cancer.
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Affiliation(s)
- Wen-Bo Chen
- Department of Gastroenterology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107 Yanjiang West Road, Guangzhou, 510120, Guangdong, People's Republic of China.
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Balaji S, King A, Dhamija Y, Le LD, Shaaban AF, Crombleholme TM, Keswani SG. Pseudotyped adeno-associated viral vectors for gene transfer in dermal fibroblasts: implications for wound-healing applications. J Surg Res 2013; 184:691-8. [PMID: 23590866 DOI: 10.1016/j.jss.2013.03.051] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2013] [Revised: 03/11/2013] [Accepted: 03/14/2013] [Indexed: 12/11/2022]
Abstract
BACKGROUND Cell-specific gene transfer and sustained transgene expression are goals of cutaneous gene therapy. Pseudotyping strategy with adeno-associated viral (AAV) vectors has the potential to confer unique cellular tropism and transduction efficiency. We hypothesize that pseudotyped AAV vectors have differential tropism and transduction efficiency under normal and wound conditions in dermal fibroblasts. MATERIALS AND METHODS We packaged AAV2 genome with green fluorescent protein reporter in capsids of other serotypes, AAV5, AAV7, and AAV8, producing pseudotyped vectors AAV2/5, AAV2/7, and AAV2/8, respectively. Murine and human dermal fibroblasts were transduced by the different pseudotypes for 24 h at multiplicities of infection 10(2), 10(3), 10(4), and 10(5). We assessed transduction efficiency at days 3 and 7. Experiments were repeated in a simulated wound environment by adding 10 ng/mL platelet-derived growth factor-B to culture media. RESULTS Transduction efficiency of the pseudotyped AAV vectors was dose dependent. Multiplicity of infection 10(5) resulted in significantly higher gene transfer. Under normal culture conditions, the pseudotyping strategy conferred differential transduction of dermal fibroblasts, with significantly enhanced transduction of murine cells by AAV2/5 and AAV2/8 compared with AAV2/2. Adeno-associated virus 2/8 was more efficacious in transducing human cells. Under wound conditions, transduction efficiency of AAV2/2, 2/5, and 2/8 was significantly lower in murine fibroblasts. At day 3 under wound conditions, all vectors demonstrated similar transduction efficiency, but by day 7, the three pseudotyped vectors transduced significantly more murine cells compared with AAV2/2. However, in human cells, there was no significant difference in the transduction efficiency of each pseudotype between normal and wound conditions at both 3 and 7 d. CONCLUSIONS The AAV pseudotyping strategy represents a gene transfer technology that can result in differential transduction of dermal fibroblasts. The differences in transduction efficiency in murine and human dermal fibroblasts in both the normal and wound environment highlight issues with translatability of gene transfer techniques. These data provide a template for using pseudotyped AAV vectors in cutaneous applications.
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Affiliation(s)
- Swathi Balaji
- Division of Pediatric, General, Thoracic, and Fetal Surgery, Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, Ohio 45229-3039, USA
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