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He Y, Li J, Liang Z, Tang H, Shi J, Cai J, Liao Y. Internal Expansion Preconditioning of Recipient Site Increases Fat Graft Retention by Enriching Stem Cell Pool and Inducing Browning in Rats. Plast Reconstr Surg 2024; 153:1055-1065. [PMID: 37285020 DOI: 10.1097/prs.0000000000010770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
BACKGROUND Fat grafting has an unsatisfactory retention rate for breast reconstruction because of poor recipient conditions. The contribution of the recipient site to fat grafts is unknown. In this study, the authors hypothesize that tissue expansion could improve fat graft retention by preconditioning the recipient fat pad. METHODS Overexpansion was achieved using 10-mL cylindrical soft-tissue expanders implanted beneath the left inguinal fat flaps of 16 Sprague-Dawley rats (weighing 250 to 300 g), whose contralateral parts were implanted with a silicone sheet as a control. After 7 days of expansion, the implants were removed and both inguinal fat flaps received 1 mL of fat grafts from eight donor rats. Fluorescent dye-labeled mesenchymal stromal cells were injected into rats and tracked in vivo by fluorescence imaging. Transplanted adipose tissue was harvested at 4 and 10 weeks ( n = 8 per time point). RESULTS After 7 days of expansion, OCT4 + ( P = 0.0002) and Ki67 + ( P = 0.0004) areas were increased with up-regulated expression of CXCL12 in recipient adipose flaps. An increasing number of CM-DiI-positive mesenchymal stromal cells were observed in the expanded fat pad. At 10 weeks after fat grafting, retention rate, measured using the Archimedes principle, was much higher in the expanded group than in the nonexpanded group (0.3019 ± 0.0680 versus 0.1066 ± 0.0402; P = 0.0005). Histologic and transcriptional analyses revealed that angiogenesis was enhanced, and macrophage infiltration was decreased in the expanded group. CONCLUSION Internal expansion preconditioning increased circulating stem cells into the recipient fat pad and contributed to improved fat graft retention. CLINICAL RELEVANCE STATEMENT Patients who have limited soft tissue after mastectomy are encouraged to undergo fat grafting. Then, an internal expander could be placed beneath the transferred fat. After internal expansion preconditioning of the recipient site, fat grafting could be performed again for soft-tissue volumization.
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Affiliation(s)
- Yufei He
- From the Departments of Plastic and Cosmetic Surgery
| | - Jian Li
- From the Departments of Plastic and Cosmetic Surgery
| | - Zhuokai Liang
- From the Departments of Plastic and Cosmetic Surgery
| | - Haojing Tang
- From the Departments of Plastic and Cosmetic Surgery
| | - Jiaolong Shi
- General Surgery, Nanfang Hospital, Southern Medical University
| | - Junrong Cai
- From the Departments of Plastic and Cosmetic Surgery
| | - Yunjun Liao
- From the Departments of Plastic and Cosmetic Surgery
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Jia X, Chai Y, Zhu J, Zhang X, Jiang C, Yin N, Li F. Enhancing Fat Graft Survival via Upregulating Autophagy of Adipocytes. Aesthetic Plast Surg 2024; 48:1807-1816. [PMID: 38347131 DOI: 10.1007/s00266-023-03797-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 12/04/2023] [Indexed: 05/16/2024]
Abstract
BACKGROUND Autophagy is a cellular self-protection mechanism. The upregulation of adipose-derived stem cells' (ADSCs) autophagy can promote fat graft survival. However, the effect of interfering with adipocyte autophagy on graft survival is still unknown. In addition, autophagy is involved in adipocyte dedifferentiation. We investigated the effect of autophagy on adipocyte dedifferentiation and fat graft survival. METHODS The classic autophagy regulatory drugs rapamycin (100 nM) and 3-methyladenine (3-MA; 10 mM) were used to treat adipocytes, adipocyte dedifferentiation was observed, and their effects on ADSCs were detected. In our experiments, 100 nM rapamycin, 10 mM 3-MA and saline were mixed with human adipose tissue and transplanted into nude mice. At 2, 4, 8 and 12 weeks postoperatively, the grafts were harvested for histological and immunohistochemical analysis. RESULTS Rapamycin and 3-MA can promote and inhibit adipocyte dedifferentiation by regulating autophagy. Both drugs can inhibit ADSC proliferation, and 10 mM 3-MA can inhibit ADSC adipogenesis. At weeks 8 and 12, the volume retention rate of the rapamycin group (8 weeks, 64.77% ± 6.36%; 12 weeks, 56.13% ± 4.73%) was higher than the control group (8 weeks, 52.62% ± 4.04%; P < 0.05; 12 weeks, 43.17% ± 6.02%; P < 0.05) and the rapamycin group had more viable adipocytes and better vascularization. Compared with the control group, the volume retention rate, viable adipocytes and vascularization of the 3-MA group decreased. CONCLUSIONS Rapamycin can promote adipocyte dedifferentiation by upregulating autophagy to promote fat graft survival. 3-MA can inhibit graft survival, but its mechanism includes the inhibition of adipocyte dedifferentiation and ADSC proliferation and adipogenesis. NO LEVEL ASSIGNED This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Xinyu Jia
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 33 Badachu Road, Shijingshan District, Beijing, 100144, People's Republic of China
| | - Yimeng Chai
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 33 Badachu Road, Shijingshan District, Beijing, 100144, People's Republic of China
| | - Jinglin Zhu
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 33 Badachu Road, Shijingshan District, Beijing, 100144, People's Republic of China
| | - Xinyu Zhang
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 33 Badachu Road, Shijingshan District, Beijing, 100144, People's Republic of China
| | - Chanyuan Jiang
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 33 Badachu Road, Shijingshan District, Beijing, 100144, People's Republic of China
| | - Ningbei Yin
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 33 Badachu Road, Shijingshan District, Beijing, 100144, People's Republic of China
| | - Facheng Li
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 33 Badachu Road, Shijingshan District, Beijing, 100144, People's Republic of China.
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Heimann M, Elashry MI, Klymiuk MC, Eldaey A, Wenisch S, Arnhold S. Optimizing the Adipogenic Induction Protocol Using Rosiglitazone Improves the Physiological Parameters and Differentiation Capacity of Adipose Tissue-Derived Mesenchymal Stem Cells for Horses, Sheep, Dogs, Murines, and Humans. Animals (Basel) 2023; 13:3224. [PMID: 37893949 PMCID: PMC10603751 DOI: 10.3390/ani13203224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 09/28/2023] [Accepted: 10/03/2023] [Indexed: 10/29/2023] Open
Abstract
The investigation of adipose tissue-derived mesenchymal stem cells (ASCs) has received considerable interest in regenerative medicine. A nontoxic adipogenic induction protocol valid for cells of different mammalian species has not been described. This study aims to establish an adipogenic differentiation protocol suitable for horses, sheep, dogs, murines, and human cells. An optimized rosiglitazone protocol, consisting of 5% fetal calf serum in Dulbecco's Modified Eagle's Medium, 10 μg/mL insulin, 0.55 μg/mL transferrin, 6.8 ng sodium selenite, 1 μM dexamethasone, and 1-5 μM of rosiglitazone, is compared to the 3-isobutyl-1-methylxantine (IBMX) protocol, where rosiglitazone was replaced with 0.5 mM IBMX and 0.2 mM indomethacin. Cell viability, cytotoxicity, a morphometric analysis of the lipid, and the expression of adipogenic markers for 14 days were assessed. The data revealed that using 5 µM of rosiglitazone promotes the adipogenic differentiation capacity in horse, sheep, and dog cells compared to IBMX induction. Meanwhile, marked reductions in the cell viability and cell number with the IBMX protocol were detected, and rosiglitazone increased the cell number and lipid droplet size, prevented apoptosis, and upregulated FABP-4 and Leptin expression in the cells of most of the species. Our data revealed that the rosiglitazone protocol improves the adipogenesis of ASCs, together with having less toxicity, and should be considered for cell reproducibility and clinical applications targeting obesity.
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Affiliation(s)
- Manuela Heimann
- Institute of Veterinary Anatomy, Histology and Embryology, Justus-Liebig-University of Giessen, 35392 Giessen, Germany; (M.H.); (M.C.K.); (S.A.)
| | - Mohamed I. Elashry
- Institute of Veterinary Anatomy, Histology and Embryology, Justus-Liebig-University of Giessen, 35392 Giessen, Germany; (M.H.); (M.C.K.); (S.A.)
| | - Michele C. Klymiuk
- Institute of Veterinary Anatomy, Histology and Embryology, Justus-Liebig-University of Giessen, 35392 Giessen, Germany; (M.H.); (M.C.K.); (S.A.)
| | - Asmaa Eldaey
- Clinic of Small Animals, c/o Institute of Veterinary Anatomy, Histology and Embryology, Justus-Liebig-University of Giessen, 35392 Giessen, Germany; (A.E.); (S.W.)
| | - Sabine Wenisch
- Clinic of Small Animals, c/o Institute of Veterinary Anatomy, Histology and Embryology, Justus-Liebig-University of Giessen, 35392 Giessen, Germany; (A.E.); (S.W.)
| | - Stefan Arnhold
- Institute of Veterinary Anatomy, Histology and Embryology, Justus-Liebig-University of Giessen, 35392 Giessen, Germany; (M.H.); (M.C.K.); (S.A.)
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Chai Y, Jia X, Zhu J, Jiang C, Yin N, Li F. Increased Fat Graft Survival by Promoting Adipocyte Dedifferentiation. Aesthet Surg J 2023; 43:NP213-NP222. [PMID: 36415951 DOI: 10.1093/asj/sjac296] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/08/2022] [Accepted: 11/09/2022] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Some adipocytes undergo dedifferentiation after fat transplantation, and this may affect the survival of fat grafts. However, this effect has not been adequately studied. OBJECTIVES This study aimed to clarify the effect of promoting the dedifferentiation of mature adipocytes on the survival of fat grafts. METHODS Mature adipocytes and adipose stem cells (ASCs) were treated with OSI-906 (a specific inhibitor of insulin receptor and insulin-like growth factor-1 receptor) in vitro, and then the dedifferentiation of mature adipocytes and the proliferation of ASCs were evaluated. In the in vivo experiment, human lipoaspirates mixed with phosphate-buffered saline (Group A) or OSI-906 (Group B) were compared in nude mice. Grafts were harvested at 2, 8, and 12 weeks, and volume retention rate, histologic, and immunohistochemical analyses were conducted. RESULTS OSI-906 can promote the dedifferentiation of mature adipocytes and inhibit the proliferation of ASCs. At 12 weeks, Group B showed a better volume retention rate (mean [standard deviation, SD], 62.3% [7.61%]) than group A (47.75% [6.11%]) (P < .05). Moreover, viable adipocytes and vascularization showed greater improvement in Group B than in Group A. CONCLUSIONS This study suggests that promoting the dedifferentiation of mature adipocytes can improve the survival rate and quality of fat grafts.
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Affiliation(s)
- Yimeng Chai
- From the Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shijingshan District, Beijing, People's Republic of China
| | - Xinyu Jia
- From the Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shijingshan District, Beijing, People's Republic of China
| | - Jinglin Zhu
- From the Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shijingshan District, Beijing, People's Republic of China
| | - Chanyuan Jiang
- From the Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shijingshan District, Beijing, People's Republic of China
| | - Ningbei Yin
- From the Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shijingshan District, Beijing, People's Republic of China
| | - Facheng Li
- From the Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shijingshan District, Beijing, People's Republic of China
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Ou-yang Y, Dai MM. Screening for genes, miRNAs and transcription factors of adipogenic differentiation and dedifferentiation of mesenchymal stem cells. J Orthop Surg Res 2023; 18:46. [PMID: 36647068 PMCID: PMC9843867 DOI: 10.1186/s13018-023-03514-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 01/08/2023] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND The purpose of present study was to reveal the molecular mechanisms responsible for both adipogenic differentiation and dedifferentiation of mesenchymal stem cells (MSCs). METHODS Microarray data GSE36923 were obtained from the Gene Expression Omnibus database. Differentially expressed genes (DEGs) between adipogenically differentiated cells vs undifferentiated bone marrow-derived MSCs, adipogenically differentiated cells vs dedifferentiated cells samples at day 7 and adipogenically differentiated cells vs dedifferentiated cells samples at day 35 were screened, and overlapped DEGs across the three groups were analyzed. The underlying functions of the upregulated and downregulated DEGs were investigated by Gene ontology enrichment and Kyoto Encyclopedia of Genes and Genomes pathway analysis. The protein-protein interaction network was constructed, and hub genes were obtained subsequently. Hub genes were verified with GSE113253 dataset, and then miRNA-gene network and TF-gene network were constructed. RESULTS A total of 284 upregulated DEGs and 376 downregulated DEGs overlapped across the three groups. PPAR signaling pathway, AMPK signaling pathway, insulin signaling pathway, carbon metabolism, pyruvate metabolism, fatty acid metabolism, regulation of lipolysis in adipocytes, biosynthesis of amino acids, citrate cycle (TCA cycle) and 2-Oxocarboxylic acid metabolism were the top 10 pathways involving in the upregulated DEGs, and graft-versus-host disease, allograft rejection, viral myocarditis, cell adhesion molecules, phagosome, type I diabetes mellitus, antigen processing and presentation, autoimmune thyroid disease, intestinal immune network for IgA production and rheumatoid arthritis were the top 10 pathways in downregulated DEGs. After validation, the 8 hub genes were IL6, PPARG, CCL2, FASN, CEBPA, ADIPOQ, FABP4 and LIPE. Ten key miRNAs were hsa-mir-27a-3p, hsa-mir-182-5p, hsa-mir-7-5p, hsa-mir-16-5p, hsa-mir-1-3p, hsa-mir-155-5p, hsa-mir-21-3p, hsa-mir-34a-5p, hsa-mir-27a-5p and hsa-mir-30c-5p, and 10 key TFs were TFDP1, GTF2A2, ZNF584, NRF1, ZNF512, NFRKB, CEBPG, KLF16, GLIS2 and MXD4. CONCLUSION Our study constructed miRNA-gene network and TF-gene network involved in both adipogenic differentiation and dedifferentiation of MSCs, contributing to enhancing the efficiency of MSCs transplantation in soft tissue defect repair and developing more potent remedies for adipogenesis-related skeletal disorders.
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Affiliation(s)
- Yi Ou-yang
- grid.284723.80000 0000 8877 7471Department of Traumatic Joint Surgery, Shunde Hospital, Southern Medical University (The First People’s Hospital of Shunde, Foshan), No.1 Jiazi Road, Lunjiao, Shunde District, Foshan City, Guangdong Province China
| | - Miao-miao Dai
- grid.284723.80000 0000 8877 7471Department of Ophthalmology, Shunde Hospital, Southern Medical University (The First People’s Hospital of Shunde, Foshan), No.1 Jiazi Road, Lunjiao, Shunde District, Foshan City, Guangdong Province China
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6
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Louis F, Sowa Y, Irie S, Higuchi Y, Kitano S, Mazda O, Matsusaki M. Injectable Prevascularized Mature Adipose Tissues (iPAT) to Achieve Long-Term Survival in Soft Tissue Regeneration. Adv Healthc Mater 2022; 11:e2201440. [PMID: 36103662 DOI: 10.1002/adhm.202201440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 09/01/2022] [Indexed: 01/28/2023]
Abstract
Soft tissue regeneration remains a challenge in reconstructive surgery. So far, both autologous fat implantations and artificial implants methods used in clinical applications lead to various disadvantages and limited lifespan. To overcome these limitations and improve the graft volume maintenance, reproducing a mature adipose tissue already including vasculature structure before implantation can be the solution. Therefore, injectable prevascularized adipose tissues (iPAT) are made from physiological collagen microfibers mixed with human mature adipocytes, adipose-derived stem cells, and human umbilical vein endothelial cells, embedded in fibrin gel. Following murine subcutaneous implantation, the iPAT show a higher cell survival (84% ± 6% viability) and volume maintenance after 3 months (up to twice heavier) when compared to non-prevascularized balls and liposuctioned fat implanted controls. This higher survival can be explained by the greater amount of blood vessels found (up to 1.6-fold increase), with balanced host anastomosis (51% ± 1% of human/mouse lumens), also involving infiltration by the lymphatic and neural vasculature networks. Furthermore, with the cryopreservation possibility enabling their later reinjection, the iPAT technology has the merit to allow noninvasive soft tissue regeneration for long-term outcomes.
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Affiliation(s)
- Fiona Louis
- Joint Research Laboratory (TOPPAN) for Advanced Cell Regulatory Chemistry, Graduate School of Engineering, Osaka University, Suita, 565-0871, Japan
| | - Yoshihiro Sowa
- Department of Plastic and Reconstructive Surgery, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan.,Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501, Japan
| | - Shinji Irie
- Joint Research Laboratory (TOPPAN) for Advanced Cell Regulatory Chemistry, Graduate School of Engineering, Osaka University, Suita, 565-0871, Japan.,TOPPAN INC, Taito, Tokyo, 110-0016, Japan
| | - Yuriko Higuchi
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, 606-8501, Japan
| | - Shiro Kitano
- Joint Research Laboratory (TOPPAN) for Advanced Cell Regulatory Chemistry, Graduate School of Engineering, Osaka University, Suita, 565-0871, Japan.,TOPPAN INC, Taito, Tokyo, 110-0016, Japan
| | - Osam Mazda
- Department of Immunology, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Michiya Matsusaki
- Joint Research Laboratory (TOPPAN) for Advanced Cell Regulatory Chemistry, Graduate School of Engineering, Osaka University, Suita, 565-0871, Japan.,Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, 565-0871, Japan
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Aso M, Yamamoto TT, Kuroda M, Wada J, Kubota Y, Ishikawa K, Maezawa Y, Teramoto N, Tawada A, Asada S, Aoyagi Y, Kirinashizawa M, Onitake A, Matsuura Y, Yasunaga K, Konno SI, Nishino K, Yamamoto M, Miyoshi J, Kobayashi N, Tanio M, Ikeuchi T, Igari H, Mitsukawa N, Hanaoka H, Yokote K, Saito Y. First-in-human autologous implantation of genetically modified adipocytes expressing LCAT for the treatment of familial LCAT deficiency. Heliyon 2022; 8:e11271. [PMID: 36387451 PMCID: PMC9663876 DOI: 10.1016/j.heliyon.2022.e11271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 02/21/2022] [Accepted: 10/20/2022] [Indexed: 11/13/2022] Open
Abstract
Background Familial lecithin: cholesterol acyltransferase (LCAT) deficiency (FLD) is a severe inherited disease without effective treatment. Patients with FLD develop severe low HDL, corneal opacity, hemolytic anemia, and renal injury. Objective We developed genetically modified adipocytes (GMAC) secreting LCAT (LCAT-GMAC) for ex vivo gene therapy. GMACs were prepared from the patient’s adipocytes to express LCAT by retroviral gene transduction to secrete functional enzymes. This study aimed to evaluate the safety and efficacy of LCAT-GMAC implantation in an FLD patient. Methods Proliferative preadipocytes were obtained from a patient using a ceiling culture and retrovirally transduced with LCAT. After obtaining enough cells by expansion culture of the transduced cells, the resulting LCAT-GMACs were implanted into a patient with FLD. To evaluate the safety and efficacy, we analyzed the outcome of the autologous implantation for 24 weeks of observation and subsequent 240 weeks of the follow-up periods. Results This first-in-human autologous implantation of LCAT-GMACs was shown to be safe by evaluating adverse events. The LCAT-GMAC implantation increased serum LCAT activity by approximately 50% of the baseline and sustained over three years. Consistent with increased LCAT activity, intermediate-density lipoprotein (IDL) and free cholesterol levels of the small and very small HDL fractions decreased. We found the hemoglobin/haptoglobin complex in the hemolyzed pre-implantation sera of the patient. After one week of the implantation, the hemoglobin/haptoglobin complex almost disappeared. Immediately after the implantation, the patient's proteinuria decreased temporarily to mild levels and gradually increased to the baseline. At 48 weeks after implantation, the patient's proteinuria deteriorated with the development of mild hypertension. By the treatment with antihypertensives, the patient's blood pressure normalized. With the normalization of blood pressure, the proteinuria rapidly decreased to mild proteinuria levels. Conclusions LCAT-GMAC implantation in a patient with FLD is shown to be safe and appears to be effective, in part, for treating anemia and proteinuria in FLD.
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Affiliation(s)
| | | | - Masayuki Kuroda
- Center for Advanced Medicine, Chiba University Hospital, 2608677 Chiba, Japan
| | - Jun Wada
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 7008530 Okayama, Japan
| | - Yoshitaka Kubota
- Department of Plastic and Reconstructive Surgery, Chiba University, Faculty of Medicine, 2608670 Chiba, Japan
| | - Ko Ishikawa
- Department of Endocrinology, Hematology, and Gerontology, Chiba University, Graduates School of Medicine and Department of Diabetes, Metabolism, and Endocrinology, Chiba University Hospital, 2608670 Chiba, Japan
| | - Yoshiro Maezawa
- Department of Endocrinology, Hematology, and Gerontology, Chiba University, Graduates School of Medicine and Department of Diabetes, Metabolism, and Endocrinology, Chiba University Hospital, 2608670 Chiba, Japan
| | - Naoya Teramoto
- Department of Endocrinology, Hematology, and Gerontology, Chiba University, Graduates School of Medicine and Department of Diabetes, Metabolism, and Endocrinology, Chiba University Hospital, 2608670 Chiba, Japan
| | - Ayako Tawada
- Department of Ophthalmology and Visual Science, Chiba University Graduate School of Medicine, 2608670 Chiba, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | - Takayuki Ikeuchi
- Chiba University Hospital Clinical Research Center, 2608677 Chiba, Japan
| | - Hidetoshi Igari
- Division of Infection Control, Chiba University Hospital, 2608677 Chiba, Japan
| | - Nobuyuki Mitsukawa
- Department of Plastic and Reconstructive Surgery, Chiba University, Faculty of Medicine, 2608670 Chiba, Japan
| | - Hideki Hanaoka
- Chiba University Hospital Clinical Research Center, 2608677 Chiba, Japan
| | - Koutaro Yokote
- Department of Endocrinology, Hematology, and Gerontology, Chiba University, Graduates School of Medicine and Department of Diabetes, Metabolism, and Endocrinology, Chiba University Hospital, 2608670 Chiba, Japan
- Corresponding author.
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Yin B, Zhang X, Cai L, Han X, Li F. Function-preserving fat grafting in the breast: Results based on 18 years of experience. J Plast Reconstr Aesthet Surg 2022; 75:2996-3003. [PMID: 35853805 DOI: 10.1016/j.bjps.2022.04.084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 02/27/2022] [Accepted: 04/12/2022] [Indexed: 11/17/2022]
Abstract
BACKGROUND Autologous fat transplantation has been used for breast nearly 40 years, but there are two main problems: the volume retention rate is unpredictable, leading to too many operations, and various complications, such as nodules, necrosis and calcification, occur. OBJECTIVE The author proposed "function-preserving fat grafting" (FPFG) and reviewed the clinical data of patients from October 2002 to December 2020. METHODS A total of 1218 patients underwent surgery, and 767 patients were followed up for more than half a year. Their ages ranged from 22 to 61 (31.9±10.1) years, and the BMI values ranged from 16.1 to 28.2 (20.6±2.73) kg/m2. Group I included 703 cases of breast aesthetic augmentation, group II included 38 cases of breast reconstruction after mastectomy (10 cases after radiotherapy and 7 cases after the Brava device was worn) and group III included 26 cases of simultaneous implant exchange with fat. RESULTS At 6 months after the operation, 89.8% of the patients were satisfied with the outcome. For these patients, aesthetic augmentation required 1.9±0.73 procedures, and the unilateral breast injection volume was 180-380 ml (265.5±46.6); breast reconstruction required an average of 3.4±0.71 procedures, and the unilateral injection volume was 140-370 ml (233.9±67.7). The simultaneous implant exchange volume with fat was 160-320 ml (241.3±35.8 ml). There were 9 cases (1.2%) of palpable nodules, 3 cases of infection (0.39%), and no other severe complications. CONCLUSIONS FPFG has the advantages of requiring few operations; leading to few necrosis, oil cysts and nodules; and leading to high postoperative satisfaction.
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Affiliation(s)
- Bo Yin
- Department of Body Contouring and Fat grafting Center, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100144, China
| | - Xinyu Zhang
- Department of Body Contouring and Fat grafting Center, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100144, China
| | - Lei Cai
- Department of Body Contouring and Fat grafting Center, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100144, China
| | - Xuefeng Han
- Department of Body Contouring and Fat grafting Center, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100144, China
| | - Facheng Li
- Department of Body Contouring and Fat grafting Center, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100144, China.
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He Y, Liang Z, Wang J, Tang H, Li J, Cai J, Liao Y. Ceiling culture of human mature white adipocytes with a browning agent: A novel approach to induce transdifferentiation into beige adipocytes. Front Bioeng Biotechnol 2022; 10:905194. [PMID: 36046675 PMCID: PMC9420896 DOI: 10.3389/fbioe.2022.905194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 07/21/2022] [Indexed: 11/13/2022] Open
Abstract
Excess and dysfunctional adipose tissue plays an important role in metabolic diseases, including obesity, atherosclerosis and type 2 diabetes mellitus. In mammals, adipose tissue is categorized into two types: white and brown. Adult brown tissue is mainly composed of beige adipocytes, which dispose of stored energy as heat and have become increasingly popular as a therapeutic target for obesity. However, there is still a paucity of cell models that allow transdifferentiation of mature white adipocytes into beige adipocytes, as seen in vivo. Here, we describe a novel, ceiling culture-based model of human mature white adipocytes, which transdifferentiate into beige adipocytes under the mechanical force and hypoxia of ceiling culture. We also show that the use of rosiglitazone and rapamycin can modulate transdifferentiation, up and down regulating expression of beige adipocyte-specific genes, respectively. Rosiglitazone additionally facilitated the upregulation of fatty acid lipolysis and oxidation genes. Finally, these beige adipocytes derived from dedifferentiated adipocytes exhibited a progenitor-specific phenotype, with higher expression of mature adipocyte-specific genes than adipocyte-derived stem cells. Overall, we report a novel approach to conveniently cultivate beige adipocytes from white adipocytes in vitro, suitable for mechanistic studies of adipose biology and development of cell and drug therapies in the future.
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Affiliation(s)
| | | | | | | | | | - Junrong Cai
- *Correspondence: Junrong Cai, ; Yunjun Liao,
| | - Yunjun Liao
- *Correspondence: Junrong Cai, ; Yunjun Liao,
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10
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Hanson SE. Video Commentary on: Dedifferentiation of Human Adipocytes After Fat Transplantation. Aesthet Surg J 2022; 42:NP432-NP433. [PMID: 35451452 DOI: 10.1093/asj/sjac026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Summer E Hanson
- Section of Plastic and Reconstructive Surgery, Department of Surgery, University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
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11
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Chai Y, Chen Y, Yin B, Zhang X, Han X, Cai L, Yin N, Li F. Dedifferentiation of Human Adipocytes After Fat Transplantation. Aesthet Surg J 2022; 42:NP423-NP431. [PMID: 35032169 DOI: 10.1093/asj/sjab402] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Fat transplantation is a common method employed to treat soft-tissue defects. The dedifferentiation of mature adipocytes has been well documented, but whether it occurs after fat transplantation remains unclear. OBJECTIVES The major purpose of this project was to investigate the dedifferentiation of mature adipocytes after fat transplantation. METHODS Human lipoaspirate tissue was obtained from 6 female patients who underwent esthetic liposuction. Mature adipocytes were extracted and labeled with PKH26, mixed with lipoaspirate, and injected into nude mice. In addition, PKH26+ adipocytes were subjected to a ceiling culture. Grafted fat was harvested from nude mice, and stromal vascular fragment cells were isolated. The immunophenotype of PKH26+ cells was detected by flow cytometry analysis at 2 days and 1 week. The PKH26+ cells were sorted and counted at 2 and 4 weeks to verify their proliferation and multilineage differentiation abilities. RESULTS Two days after transplantation, almost no PKH26+ cells were found in the stromal vascular fragment cells. The PKH26+ cells found 1 week after transplantation showed a positive expression of cluster of differentiation (CD) 90 (CD90) and CD105 and a negative expression of CD45. This indicates that the labeled adipocytes were dedifferentiated. Its pluripotency was further demonstrated by fluorescent cell sorting and differentiation culture in vitro. In addition, the number of live PKH26+ cells at week 4 [(6.83 ± 1.67) × 104] was similar with that at week 2 [(7.11 ± 1.82) × 104]. CONCLUSIONS Human mature adipocytes can dedifferentiate into stem cell-like cells in vivo after fat transplantation.
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Affiliation(s)
- Yimeng Chai
- Plastic Surgery Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Yuanjing Chen
- Plastic Surgery Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Bo Yin
- Body Contouring and Liposuction Center, Plastic Surgery Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Xinyu Zhang
- Body Contouring and Liposuction Center, Plastic Surgery Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Xuefeng Han
- Body Contouring and Liposuction Center, Plastic Surgery Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Lei Cai
- Body Contouring and Liposuction Center, Plastic Surgery Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Ningbei Yin
- Cleft Lip and Palate Center, Plastic Surgery Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Facheng Li
- Body Contouring and Liposuction Center, Plastic Surgery Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
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12
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Murata Y, Obinata D, Matsumoto T, Ikado Y, Kano K, Fukuda N, Yamaguchi K, Takahashi S. Urethral injection of dedifferentiated fat cells ameliorates sphincter damage and voiding dysfunction in a rat model of persistence stress urinary incontinence. Int Urol Nephrol 2022; 54:789-797. [PMID: 35175498 PMCID: PMC8924144 DOI: 10.1007/s11255-021-03083-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 12/02/2021] [Indexed: 12/11/2022]
Abstract
Purpose Dedifferentiated fat (DFAT) cells are mature adipocyte-derived multipotent cells that can be applicable to cell-based therapy for stress urinary incontinence (SUI). This study developed a persistence SUI model that allows long-term evaluation using a combination of vaginal distention (VD) and bilateral ovariectomy (OVX) in rats. Then, the therapeutic effects of DFAT cell transplantation in the persistence SUI model was examined. Methods In total, 48 Sprague–Dawley rats were divided into four groups and underwent VD (VD group), bilateral OVX (OVX group), VD and bilateral OVX (VD + OVX group), or sham operation (Control group). At 2, 4, and 6 weeks after injury, leak point pressure (LPP) and histological changes of the urethral sphincter were evaluated. Next, 14 rats undergoing VD and bilateral OVX were divided into two groups and administered urethral injection of DFAT cells (DFAT group) or fibroblasts (Fibroblast group). At 6 weeks after the injection, LPP and histology of the urethral sphincter were evaluated. Results The VD + OVX group retained a decrease in LPP with sphincter muscle atrophy at least until 6 weeks after injury. The LPP and urethral sphincter muscle atrophy in the DFAT group recovered better than those in the fibroblast group. Conclusions The persistence SUI model was created by a combination of VD and bilateral OVX in rats. Urethral injection of DFAT cells inhibited sphincter muscle atrophy and improved LPP in the persistence SUI model. These findings suggest that the DFAT cells may be an attractive cell source for cell-based therapy to treat SUI.
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Affiliation(s)
- Yasutaka Murata
- Department of Urology, Nihon University School of Medicine, Tokyo, Japan
| | - Daisuke Obinata
- Department of Urology, Nihon University School of Medicine, Tokyo, Japan
| | - Taro Matsumoto
- Division of Cell Regeneration and Transplantation, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Oyaguchi-Kamicho, Itabashi-ku, Tokyo, 173-8610, Japan.
| | - Yuichiro Ikado
- Department of Urology, Nihon University School of Medicine, Tokyo, Japan
| | - Koichiro Kano
- Laboratory of Cell and Tissue Biology, College of Bioresource Science, Nihon University, Fujisawa, Japan
| | - Noboru Fukuda
- Division of Cell Regeneration and Transplantation, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Oyaguchi-Kamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Kenya Yamaguchi
- Department of Urology, Nihon University School of Medicine, Tokyo, Japan
| | - Satoru Takahashi
- Department of Urology, Nihon University School of Medicine, Tokyo, Japan
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13
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Chen YT, Ramalingam L, Garcia CR, Ding Z, Wu J, Moustaid-Moussa N, Li W. Engineering and Characterization of a Biomimetic Microchip for Differentiating Mouse Adipocytes in a 3D Microenvironment. Pharm Res 2022; 39:329-340. [PMID: 35166994 DOI: 10.1007/s11095-022-03195-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 02/09/2022] [Indexed: 10/19/2022]
Abstract
Although two-dimensional (2D) cell cultures are the standard in cell research, one pivotal disadvantage is the lack of cell-cell and cell-extracellular matrix (ECM) signaling in the culture milieu. However, such signals occur in three-dimensional (3D) in vivo environments and are essential for cell differentiation, proliferation, and a range of cellular functions. In this study, we developed a microfluidic device to proliferate and differentiate functional adipose tissue and adipocytes by utilizing 3D cell culture technology. This device was used to generate a tissue-specific 3D microenvironment to differentiate 3T3-L1 preadipocytes into either visceral white adipocytes using visceral adipose tissue (VAT) or subcutaneous white adipose tissue (SAT). The microchip has been tested and validated by functional assessments including cell morphology, inflammatory response to a lipopolysaccharide (LPS) challenge, GLUT4 tracking, and gene expression analyses. The biomimetic microfluidic chip is expected to mimic functional adipose tissues that can replace 2D cell cultures and allow for more accurate analysis of adipose tissue physiology.
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Affiliation(s)
- Yu-Ting Chen
- School of Materials Science & Engineering, Donghu New & High Technology Development Zone, Wuhan Institute of Technology, LiuFang Campus, No. 206, Guanggu 1st road, Wuhan, 430205, People's Republic of China.,Department of Chemical Engineering, Texas Tech University, 807 Canton Ave, Lubbock, TX, 79409, USA
| | - Latha Ramalingam
- Department of Nutritional Sciences, & Obesity Research Institute, Texas Tech University, P.O. Box 41270, Lubbock, TX, 79409, USA.,Department of Nutrition and Food Studies, Syracuse University, Syracuse, NY, 13210, USA
| | - Celine R Garcia
- Department of Chemical Engineering, Texas Tech University, 807 Canton Ave, Lubbock, TX, 79409, USA
| | - Zhenya Ding
- Department of Chemical Engineering, Texas Tech University, 807 Canton Ave, Lubbock, TX, 79409, USA
| | - Jiangyu Wu
- School of Materials Science & Engineering, Donghu New & High Technology Development Zone, Wuhan Institute of Technology, LiuFang Campus, No. 206, Guanggu 1st road, Wuhan, 430205, People's Republic of China.
| | - Naima Moustaid-Moussa
- Department of Nutritional Sciences, & Obesity Research Institute, Texas Tech University, P.O. Box 41270, Lubbock, TX, 79409, USA.
| | - Wei Li
- Department of Chemical Engineering, Texas Tech University, 807 Canton Ave, Lubbock, TX, 79409, USA.
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14
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Oki Y, Hagiwara R, Matsumaru T, Kano K. Effect of volatile fatty acids on adipocyte differentiation in bovine dedifferentiated fat (DFAT) cells in vitro. Genes Cells 2021; 27:5-13. [PMID: 34695306 DOI: 10.1111/gtc.12903] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/21/2021] [Accepted: 10/22/2021] [Indexed: 11/29/2022]
Abstract
Here, we established dedifferentiated fat (DFAT) cells from mature bovine adipocytes and then examined the effects of volatile fatty acids on the differentiation of these DFAT cells into adipocytes in vitro. When mature adipocytes were isolated from bovine adipose tissue and cultured using the ceiling culture method, they were dedifferentiated into fibroblast-like cells without lipid droplets. These fibroblast-like cells, termed bovine DFAT (b-DFAT) cells, actively proliferated. After adipogenic induction, increased expression of adipocyte-specific genes occurred in b-DFAT cells and they redifferentiated into adipocytes with an accumulation of lipid droplets in their cytoplasm. The effects of volatile fatty acids on adipocyte differentiation in b-DFAT cells were also examined. Specifically, acetate, butyrate, and propionate added to adipogenic induction medium significantly enhanced the adipogenesis of b-DFAT cells compared with that observed in control cells; the addition of 10-3 mol of acetate enhanced adipogenesis of b-DFAT cells to the greatest extent. These results suggest that b-DFAT cells derived from bovine mature adipocytes are appropriate for the study of bovine adipocyte differentiation and that the optimum concentration treatment of acetate, a major energy source for ruminants, promotes adipogenesis of b-DFAT cells in vitro.
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Affiliation(s)
- Yoshinao Oki
- Laboratory of Cell and Tissue Biology, Graduate School of Bioresource Sciences, Nihon University, Fujisawa, Japan
| | - Reiko Hagiwara
- Laboratory of Cell and Tissue Biology, Graduate School of Bioresource Sciences, Nihon University, Fujisawa, Japan
| | - Takashi Matsumaru
- Laboratory of Cell and Tissue Biology, Graduate School of Bioresource Sciences, Nihon University, Fujisawa, Japan
| | - Koichiro Kano
- Laboratory of Cell and Tissue Biology, Graduate School of Bioresource Sciences, Nihon University, Fujisawa, Japan
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15
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DeBari MK, Abbott RD. Adipose Tissue Fibrosis: Mechanisms, Models, and Importance. Int J Mol Sci 2020; 21:ijms21176030. [PMID: 32825788 PMCID: PMC7503256 DOI: 10.3390/ijms21176030] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 08/15/2020] [Accepted: 08/17/2020] [Indexed: 02/06/2023] Open
Abstract
Increases in adipocyte volume and tissue mass due to obesity can result in inflammation, further dysregulation in adipose tissue function, and eventually adipose tissue fibrosis. Like other fibrotic diseases, adipose tissue fibrosis is the accumulation and increased production of extracellular matrix (ECM) proteins. Adipose tissue fibrosis has been linked to decreased insulin sensitivity, poor bariatric surgery outcomes, and difficulty in weight loss. With the rising rates of obesity, it is important to create accurate models for adipose tissue fibrosis to gain mechanistic insights and develop targeted treatments. This article discusses recent research in modeling adipose tissue fibrosis using in vivo and in vitro (2D and 3D) methods with considerations for biomaterial selections. Additionally, this article outlines the importance of adipose tissue in treating other fibrotic diseases and methods used to detect and characterize adipose tissue fibrosis.
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Affiliation(s)
- Megan K. DeBari
- Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA;
| | - Rosalyn D. Abbott
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
- Correspondence:
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16
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Tanataweethum N, Zhong F, Trang A, Lee C, Cohen RN, Bhushan A. Towards an Insulin Resistant Adipose Model on a Chip. Cell Mol Bioeng 2020; 14:89-99. [PMID: 33643468 DOI: 10.1007/s12195-020-00636-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 07/07/2020] [Indexed: 12/25/2022] Open
Abstract
Introduction Adipose tissue and adipocytes are primary regulators of insulin sensitivity and energy homeostasis. Defects in insulin sensitivity of the adipocytes predispose the body to insulin resistance (IR) that could lead to diabetes. However, the mechanisms mediating adipocyte IR remain elusive, which emphasizes the need to develop experimental models that can validate the insulin signaling pathways and discover new mechanisms in the search for novel therapeutics. Currently in vitro adipose organ-chip devices show superior cell function over conventional cell culture. However, none of these models represent disease states. Only when these in vitro models can represent both healthy and disease states, they can be useful for developing therapeutics. Here, we establish an organ-on-chip model of insulin-resistant adipocytes, as well as characterization in terms of insulin signaling pathway and lipid metabolism. Methods We differentiated, maintained, and induced insulin resistance into primary adipocytes in a microfluidic organ-on-chip. We then characterized IR by looking at the insulin signaling pathway and lipid metabolism, and validated by studying a diabetic drug, rosiglitazone. Results We confirmed the presence of insulin resistance through reduction of Akt phosphorylation, Glut4 expression, Glut4 translocation and glucose uptake. We also confirmed defects of disrupted insulin signaling through reduction of lipid accumulation from fatty acid uptake and elevation of glycerol secretion. Testing with rosiglitazone showed a significant improvement in insulin sensitivity and fatty acid metabolism as suggested by previous reports. Conclusions The adipose-chip exhibited key characteristics of IR and can serve as model to study diabetes and facilitate discovery of novel therapeutics.
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Affiliation(s)
- Nida Tanataweethum
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL 60616 USA
| | - Franklin Zhong
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL 60616 USA
| | - Allyson Trang
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL 60616 USA
| | - Chaeeun Lee
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL 60616 USA
| | - Ronald N Cohen
- Section of Endocrinology, Department of Medicine, The University of Chicago, Chicago, IL 60637 USA
| | - Abhinav Bhushan
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL 60616 USA
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17
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Harms MJ, Li Q, Lee S, Zhang C, Kull B, Hallen S, Thorell A, Alexandersson I, Hagberg CE, Peng XR, Mardinoglu A, Spalding KL, Boucher J. Mature Human White Adipocytes Cultured under Membranes Maintain Identity, Function, and Can Transdifferentiate into Brown-like Adipocytes. Cell Rep 2020; 27:213-225.e5. [PMID: 30943403 DOI: 10.1016/j.celrep.2019.03.026] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 01/23/2019] [Accepted: 03/06/2019] [Indexed: 12/24/2022] Open
Abstract
White adipose tissue (WAT) is a central factor in the development of type 2 diabetes, but there is a paucity of translational models to study mature adipocytes. We describe a method for the culture of mature white adipocytes under a permeable membrane. Compared to existing culture methods, MAAC (membrane mature adipocyte aggregate cultures) better maintain adipogenic gene expression, do not dedifferentiate, display reduced hypoxia, and remain functional after long-term culture. Subcutaneous and visceral adipocytes cultured as MAAC retain depot-specific gene expression, and adipocytes from both lean and obese patients can be cultured. Importantly, we show that rosiglitazone treatment or PGC1α overexpression in mature white adipocytes induces a brown fat transcriptional program, providing direct evidence that human adipocytes can transdifferentiate into brown-like adipocytes. Together, these data show that MAAC are a versatile tool for studying phenotypic changes of mature adipocytes and provide an improved translational model for drug development.
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Affiliation(s)
- Matthew J Harms
- Cardiovascular, Renal and Metabolism, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Qian Li
- Department of Cell and Molecular Biology (CMB), Karolinska Institutet, Stockholm 17177, Sweden
| | - Sunjae Lee
- Science for Life Laboratory, KTH-Royal Institute of Technology, Stockholm 17121, Sweden
| | - Cheng Zhang
- Science for Life Laboratory, KTH-Royal Institute of Technology, Stockholm 17121, Sweden
| | - Bengt Kull
- Cardiovascular, Renal and Metabolism, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Stefan Hallen
- Cardiovascular, Renal and Metabolism, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Anders Thorell
- Department of Clinical Sciences, Danderyds Hospital, Karolinska Institutet and Department of Surgery, Ersta Hospital, Stockholm 11691, Sweden
| | - Ida Alexandersson
- Cardiovascular, Renal and Metabolism, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Carolina E Hagberg
- Karolinska Institutet/AstraZeneca Integrated Cardio Metabolic Centre (KI/AZ ICMC), Department of Medicine, Karolinska Institutet, Stockholm 17176, Sweden
| | - Xiao-Rong Peng
- Cardiovascular, Renal and Metabolism, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Adil Mardinoglu
- Science for Life Laboratory, KTH-Royal Institute of Technology, Stockholm 17121, Sweden; Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London SE1 9RT, United Kingdom
| | - Kirsty L Spalding
- Department of Cell and Molecular Biology (CMB), Karolinska Institutet, Stockholm 17177, Sweden; Karolinska Institutet/AstraZeneca Integrated Cardio Metabolic Centre (KI/AZ ICMC), Department of Medicine, Karolinska Institutet, Stockholm 17176, Sweden
| | - Jeremie Boucher
- Cardiovascular, Renal and Metabolism, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden; The Lundberg Laboratory for Diabetes Research, University of Gothenburg, Sweden; Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Sweden.
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18
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Adipocyte dedifferentiation in health and diseases. Clin Sci (Lond) 2020; 133:2107-2119. [PMID: 31654064 DOI: 10.1042/cs20190128] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 09/27/2019] [Accepted: 10/11/2019] [Indexed: 12/24/2022]
Abstract
Adipose tissues collectively as an endocrine organ and energy storage are crucial for systemic metabolic homeostasis. The major cell type in the adipose tissue, the adipocytes or fat cells, are remarkably plastic and can increase or decrease their size and number to adapt to changes in systemic or local metabolism. Changes in adipocyte size occur through hypertrophy or atrophy, and changes in cell numbers mainly involve de novo generation of new cells or death of existing cells. Recently, dedifferentiation, whereby a mature adipocyte is reverted to an undifferentiated progenitor-like status, has been reported as a mechanism underlying adipocyte plasticity. Dedifferentiation of mature adipocytes has been observed under both physiological and pathological conditions. This review covers several aspects of adipocyte dedifferentiation, its relevance to adipose tissue function, molecular pathways that drive dedifferentiation, and the potential of therapeutic targeting adipocyte dedifferentiation in human health and metabolic diseases.
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19
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Anti-HER2 antibody therapy using gene-transduced adipocytes for HER2-positive breast cancer. Breast Cancer Res Treat 2020; 180:625-634. [PMID: 32124135 DOI: 10.1007/s10549-020-05581-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Accepted: 02/19/2020] [Indexed: 10/24/2022]
Abstract
PURPOSE Although recent advances in molecular target therapy have improved the survival of breast cancer patients, high cost and frequent hospital visits result in both societal and individual burden. To reduce these problems, it has been proposed to produce antibodies in vivo. Here, we constructed gene-transduced human ceiling culture-derived proliferative adipocytes secreting anti-HER2 antibody (HER2-ccdPAs) and evaluated their ability to secrete antibody and mediate an anti-tumor effect. METHODS Plasmid lentivirus was used as a recipient for anti-HER2 antibody cDNA and transduced into human proliferative adipocyte. Secretory antibody expression was evaluated by ELISA and western blot. Specific binding of secretory antibody to HER2 was examined by immunofluorescence analysis. Direct and indirect anti-tumor effects of supernatants from HER2-ccdPAs were evaluated using BT474 (HER2+) and MDA-MB-231 (HER2-) breast cancer cell lines. Additionally, whether adipocyte differentiation affects antibody secretion was investigated using supernatant collected from different cell maturation states. RESULTS Anti-HER2 antibody was identified in the supernatant from HER2-ccdPAs and its production increased with the differentiation into mature adipocyte. Antibodies in supernatants from HER2-ccdPAs bound to HER2-positive breast cancer cells similar to trastuzumab. Supernatant from HER2-ccdPAs inhibited the proliferation of BT474 but not MDA-MB-231 cells, and downregulated AKT phosphorylation in BT474 cells compared with controls. Supernatants from HER2-ccdPAs also had an indirect anti-tumor effect on BT474 cells through ADCC. Additionally, Single inoculation of HER2-ccdPAs showed an anti-tumor effect in BT474 xenograft model. CONCLUSIONS HER2-ccdPAs might be useful for cell-based gene therapy. This system could be a platform for various antibody therapies.
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Sun B, Yang D, Yin YZ, Xiao J. Estrogenic and anti-inflammatory effects of pseudoprotodioscin in atherosclerosis-prone mice: Insights into endothelial cells and perivascular adipose tissues. Eur J Pharmacol 2019; 869:172887. [PMID: 31877277 DOI: 10.1016/j.ejphar.2019.172887] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 12/03/2019] [Accepted: 12/18/2019] [Indexed: 12/20/2022]
Abstract
Pseudoprotodioscin (PPD), a phytoestrogen isolated from Dioscorea nipponica Makino, is recognized to possess anti-inflammatory and antiadipogenic capacities. However, little is known about the antiatherosclerotic effects of PPD and the underlying mechanisms. Here, the contribution of estrogen receptors (ERs) and inflammation to PPD-mediated amelioration of endothelial dysfunction has been fully assessed. PPD administration alleviated atherosclerotic lesions by lowering total cholesterol in ovariectomized apoE-/- mice fed a high-cholesterol diet. Molecular docking analysis suggested a selective interaction of PPD with ERα. Upon PPD treatment, ERα and endothelial nitric oxide synthase (eNOS) protein levels were increased, whereas cell adhesion molecule and monocyte chemoattractant protein-1 (MCP-1) mRNA levels were suppressed in human umbilical vein endothelial cells (HUVECs) after injury caused by oxidized low-density lipoprotein (ox-LDL). These effects could be abolished by an ERα antagonist or a NOS inhibitor. Whereas, PPD can ERα-independently suppress TNFα expression in peritoneal macrophages upon LPS induction. Estrogen deficiency induced inflammatory phenotypes in perivascular adipose tissue (PAT), which could be partially attenuated by PPD. The increased release of adiponectin in PAT after PPD treatment is in accordance with previous reported data showing that adiponectin exerts anti-inflammatory effects in multiple cell types. ERα-dependent antiadipogenic effects of PPD were also detected in PAT-derived stromal cells. The present study reveals a novel mechanism through which PPD exerts estrogenic and anti-inflammatory properties in atherosclerosis-prone mice. Thus, PPD is a promising compound which has potential therapeutic effects on atherosclerotic cardiovascular diseases in postmenopausal women.
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Affiliation(s)
- Bing Sun
- Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, PR China
| | - Dan Yang
- Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, PR China
| | - Yue-Zhang Yin
- Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, PR China; Shandong University of Traditional Chinese Medicine, Shandong, 250355, PR China
| | - Jing Xiao
- Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, PR China.
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Ma J, Xia M D J, Gao J, Lu F, Liao Y. Mechanical Signals Induce Dedifferentiation of Mature Adipocytes and Increase the Retention Rate of Fat Grafts. Plast Reconstr Surg 2019; 144:1323-1333. [PMID: 31764645 DOI: 10.1097/prs.0000000000006272] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Mature adipocytes dedifferentiate in vivo on application of a soft-tissue expander. Dedifferentiated adipocytes can proliferate and redifferentiate. This study used tissue expanders to pretreat adipose flaps, to increase the retention rate after fat graft. METHODS A soft-tissue expander and silicone sheet were implanted beneath the left and right inguinal fat pads of rats, respectively. After 7 days of expansion, the adipose tissue derived from the pads was transplanted beneath dorsal skin. Samples were harvested at various time points, and histologic, immunohistochemical, and gene expression analyses were conducted. Mature adipocytes were cultured in vitro under a pressure of 520 Pa. Changes in cell morphology, the cytoskeleton, and expression of mechanical signal-related proteins were investigated. RESULTS Pressure in adipose flaps increased to 25 kPa on expansion. Mature adipocytes dedifferentiated following expansion. At 1 week after transplantation, the expression of vascular endothelial growth factor (p < 0.05) was higher in the expanded group. The retention rate at 12 weeks after transplantation was higher in the expanded group (56 ± 3 percent) than in the control group (32 ± 3 percent) (p < 0.05), and the surviving/regenerating zones (p < 0.01) were wider. The lipid content of mature adipocytes gradually decreased on culture under increased pressure, and these cells regained a proliferative capacity. This was accompanied by increased expression of mechanical signal--related proteins (p < 0.05). CONCLUSIONS Mechanical signals may induce dedifferentiation of mature adipocytes. Dedifferentiated adipocytes increase the retention rate of fat grafts by acting as seed cells.
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Affiliation(s)
- Jingjing Ma
- From the Department of Plastic Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University; and the Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University
| | - Jing Xia M D
- From the Department of Plastic Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University; and the Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University
| | - Jianhua Gao
- From the Department of Plastic Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University; and the Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University
| | - Feng Lu
- From the Department of Plastic Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University; and the Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University
| | - Yunjun Liao
- From the Department of Plastic Surgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University; and the Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University
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22
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Discussion: Adipose-Derived Stem Cells and Ceiling Culture-Derived Preadipocytes Cultured from Subcutaneous Fat Tissue Differ in Their Epigenetic Characteristics and Osteogenic Potential. Plast Reconstr Surg 2019; 144:656-657. [PMID: 31461021 DOI: 10.1097/prs.0000000000005914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Strieder-Barboza C, Thompson E, Thelen K, Contreras GA. Technical note: Bovine adipocyte and preadipocyte co-culture as an efficient adipogenic model. J Dairy Sci 2019; 102:3622-3629. [PMID: 30772027 DOI: 10.3168/jds.2018-15626] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 12/14/2018] [Indexed: 12/11/2022]
Abstract
Reductionist studies of adipose tissue biology require reliable in vitro adipocyte culturing models. Current protocols for adipogenesis induction in stromal vascular fraction-derived preadipocytes require extended culturing periods and have low adipogenic rates. We compared the adipogenic efficiency of a 7-d co-culture model of visceral (VIS) and subcutaneous (SC) stromal vascular fraction-derived preadipocytes with mature adipocytes with a 14-d standard adipocyte differentiation protocol. We obtained preadipocytes and mature adipocytes from SC and VIS adipose tissue of nonlactating, nongestating Holstein cows (n = 6). Adipogenesis induction was performed using a standard protocol for 7 (SD7; control) or 14 d (SD14), and a co-culture model for 7 d (CC7). Culture conditions, including medium composition, were the same for all treatments. For CC7, 900 primary adipocytes/cm2 were placed in 0.4-μm transwell inserts and co-cultured with preadipocytes for adipogenesis induction. Both CC7 and SD14 similarly stimulated gene expression of adipogenic genes such as ADIPOQ, CEBPA, and CEBPB in VIS and SC. The CC7 increased triacylglycerol accumulation compared with SD14 and SD7. CC7 augmented triacylglycerol accumulation by 40- and 16-fold in SC and VIS compared with 22- and 4-fold increment in SD14, respectively. Lipolytic responses to 2-h β-adrenergic stimulation with 1 µM isoproterenol were higher in CC7 and SD14 than SD7 in SC; CC7 increased glycerol release compared with SD7 in VIS but SD7 and SD14 had similar responses. Overall, CC7 was more efficient in inducing adipogenesis in preadipocytes from VIS and SC than SD14. Furthermore, CC7 stimulated similar lipolysis and lipogenic responses than SD14 but in a shorter time. The adipogenic approach of co-culturing preadipocytes with mature adipocytes will improve the use of reductionist models to study adipocyte physiology in dairy cows and the assessment of pharmacological or nutritional interventions for enhancing dairy cow health and production.
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Affiliation(s)
| | - Eileen Thompson
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing 48824
| | - Kyan Thelen
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing 48824
| | - G Andres Contreras
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing 48824.
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Louis F, Kitano S, Mano JF, Matsusaki M. 3D collagen microfibers stimulate the functionality of preadipocytes and maintain the phenotype of mature adipocytes for long term cultures. Acta Biomater 2019; 84:194-207. [PMID: 30502481 DOI: 10.1016/j.actbio.2018.11.048] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 11/26/2018] [Accepted: 11/27/2018] [Indexed: 12/28/2022]
Abstract
Although adipose tissue is one of the most abundant tissues of the human body, its reconstruction remains a competitive challenge. The conventional in vitro two or three-dimensional (2D or 3D) models of mature adipocytes unfortunately lead to their quick dedifferentiation after one week, and complete differentiation of adipose derived stem cells (ADSC) usually requires more than one month. In this context, we developed biomimetic 3D adipose tissues with high density collagen by mixing type I collagen microfibers with primary mouse mature adipocytes or human ADSC in transwells. These 3D-tissues ensured a better long-term maintained phenotype of unilocular mature adipocytes, compared to 2D, with a viability of 96 ± 2% at day 14 and a good perilipin immunostaining, - the protein necessary for stabilizing the fat vesicles. For comparison, in 2D culture, mature adipocytes released their fat until splitting their single adipose vesicle into several ones with significantly 4 times smaller size. Concerning ADSC, the adipogenic genes expression in 3D-tissues was found at least doubled throughout the differentiation (over 8 times higher for GLUT4 at day 21), along with it, almost 4 times larger fat vesicles were observed (10 ± 4 µm at day 14). Perilipin immunostaining and leptin secretion, the satiety protein, attested the significantly doubled better functionality of ADSC in 3D adipose tissues. These obtained long-term maintained phenotype and fast adipogenesis make this model relevant for either cosmetic/pharmaceutical assays or plastic surgery purposes. STATEMENT OF SIGNIFICANCE: Adipose tissue has important roles in our organism, providing energy from its lipids storage and secreting many vital proteins. However, its reconstruction in a functional in vitro adipose tissue is still a challenge. Mature adipocytes directly extracted from surgery liposuctions quickly lose their lipids after a week in vitro and the use of differentiated adipose stem cells is too time-consuming. We developed a new artificial fat tissue using collagen microfibers. These tissues allowed the maintenance of viable big unilocular mature adipocytes up to two weeks and the faster adipogenic differentiation of adipose stem cells. Moreover, the adipose functionality confirmed by perilipin and leptin assessments makes this model suitable for further applications in cosmetic/pharmaceutical drug assays or for tissue reconstruction.
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Affiliation(s)
- Fiona Louis
- Osaka University, Joint Research Laboratory (TOPPAN) for Advanced Cell Regulatory Chemistry, Graduate School of Engineering, Japan
| | - Shiro Kitano
- Osaka University, Joint Research Laboratory (TOPPAN) for Advanced Cell Regulatory Chemistry, Graduate School of Engineering, Japan
| | - João F Mano
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Portugal
| | - Michiya Matsusaki
- Osaka University, Joint Research Laboratory (TOPPAN) for Advanced Cell Regulatory Chemistry, Graduate School of Engineering, Japan; Division of Applied Chemistry, Graduate School of Engineering, Osaka University, Japan; JST, PRESTO, Japan.
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25
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West MD, Chang CF, Larocca D, Li J, Jiang J, Sim P, Labat I, Chapman KB, Wong KE, Nicoll J, Van Kanegan MJ, de Grey ADNJ, Nasonkin IO, Stahl A, Sternberg H. Clonal derivation of white and brown adipocyte progenitor cell lines from human pluripotent stem cells. Stem Cell Res Ther 2019; 10:7. [PMID: 30616682 PMCID: PMC6323697 DOI: 10.1186/s13287-018-1087-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 10/10/2018] [Accepted: 11/21/2018] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND The role of brown fat in non-shivering thermogenesis and the discovery of brown fat depots in adult humans has made it the subject of intense research interest. A renewable source of brown adipocyte (BA) progenitors would be highly valuable for research and therapy. Directed differentiation of human pluripotent stem (hPS) cells to white or brown adipocytes is limited by lack of cell purity and scalability. Here we describe an alternative approach involving the identification of clonal self-renewing human embryonic progenitor (hEP) cell lines following partial hPS cell differentiation and selection of scalable clones. METHODS We screened a diverse panel of hPS cell-derived clonal hEP cell lines for adipocyte markers following growth in adipocyte differentiation medium. The transcriptome of the human hES-derived clonal embryonic progenitor cell lines E3, C4ELS5.1, NP88, and NP110 representing three class of definitive adipocyte progenitors were compared to the relatively non-adipogenic line E85 and adult-derived BAT and SAT-derived cells using gene expression microarrays, RT-qPCR, metabolic analysis and immunocytochemistry. Differentiation conditions were optimized for maximal UCP1 expression. RESULTS Many of the differentiated hEP cell lines expressed the adipocyte marker, FAPB4, but only a small subset expressed definitive adipocyte markers including brown adipocyte marker, UCP1. Class I cells (i.e., E3) expressed CITED1, ADIPOQ, and C19orf80 but little to no UCP1. Class II (i.e., C4ELS5.1) expressed CITED1 and UCP1 but little ADIPOQ and LIPASIN. Class III (i.e., NP88, NP110) expressed CITED1, ADIPOQ, C19orf80, and UCP1 in a similar manner as fetal BAT-derived (fBAT) cells. Differentiated NP88 and NP110 lines were closest to fBAT cells morphologically in adiponectin and uncoupling protein expression. But they were more metabolically active than fBAT cells, had higher levels of 3-hydroxybutyrate, and lacked expression of fetal/adult marker, COX7A1. The hEP BA progenitor lines were scalable to 17 passages without loss of differentiation capacity and could be readily rederived. CONCLUSIONS Taken together, these data demonstrate that self-renewing adipocyte progenitor cells can be derived from hES cells and that they are functionally like BAT cells but with unique properties that might be advantageous for basic research and for development of cell-based treatments for metabolic diseases.
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Affiliation(s)
- Michael D. West
- AgeX Therapeutics, Inc., 1010 Atlantic Ave, Alameda, CA 94501 USA
| | - Ching-Fang Chang
- 0000 0001 2181 7878grid.47840.3fUniversity of California, Berkeley, CA 94720 USA
| | - Dana Larocca
- AgeX Therapeutics, Inc., 1010 Atlantic Ave, Alameda, CA 94501 USA
| | - Jie Li
- AgeX Therapeutics, Inc., 1010 Atlantic Ave, Alameda, CA 94501 USA
| | - Jianjie Jiang
- AgeX Therapeutics, Inc., 1010 Atlantic Ave, Alameda, CA 94501 USA
| | - Pamela Sim
- AgeX Therapeutics, Inc., 1010 Atlantic Ave, Alameda, CA 94501 USA
| | - Ivan Labat
- AgeX Therapeutics, Inc., 1010 Atlantic Ave, Alameda, CA 94501 USA
| | - Karen B. Chapman
- 0000 0001 2171 9311grid.21107.35Johns Hopkins University, Baltimore, MD 21218 USA
| | - Kari E. Wong
- grid.429438.0Metabolon Inc., Morrisville, NC 27560 USA
| | - James Nicoll
- grid.422945.cZen-Bio, Inc., Research Triangle Park, NC 27709 USA
| | | | - Aubrey D. N. J. de Grey
- AgeX Therapeutics, Inc., 1010 Atlantic Ave, Alameda, CA 94501 USA ,SENS Research Foundation, Mountain View, CA 94041 USA
| | | | - Andreas Stahl
- 0000 0001 2181 7878grid.47840.3fUniversity of California, Berkeley, CA 94720 USA
| | - Hal Sternberg
- AgeX Therapeutics, Inc., 1010 Atlantic Ave, Alameda, CA 94501 USA
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26
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Fairfield H, Falank C, Farrell M, Vary C, Boucher JM, Driscoll H, Liaw L, Rosen CJ, Reagan MR. Development of a 3D bone marrow adipose tissue model. Bone 2019; 118:77-88. [PMID: 29366838 PMCID: PMC6062483 DOI: 10.1016/j.bone.2018.01.023] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 01/16/2018] [Accepted: 01/17/2018] [Indexed: 01/15/2023]
Abstract
Over the past twenty years, evidence has accumulated that biochemically and spatially defined networks of extracellular matrix, cellular components, and interactions dictate cellular differentiation, proliferation, and function in a variety of tissue and diseases. Modeling in vivo systems in vitro has been undeniably necessary, but when simplified 2D conditions rather than 3D in vitro models are used, the reliability and usefulness of the data derived from these models decreases. Thus, there is a pressing need to develop and validate reliable in vitro models to reproduce specific tissue-like structures and mimic functions and responses of cells in a more realistic manner for both drug screening/disease modeling and tissue regeneration applications. In adipose biology and cancer research, these models serve as physiologically relevant 3D platforms to bridge the divide between 2D cultures and in vivo models, bringing about more reliable and translationally useful data to accelerate benchtop to bedside research. Currently, no model has been developed for bone marrow adipose tissue (BMAT), a novel adipose depot that has previously been overlooked as "filler tissue" but has more recently been recognized as endocrine-signaling and systemically relevant. Herein we describe the development of the first 3D, BMAT model derived from either human or mouse bone marrow (BM) mesenchymal stromal cells (MSCs). We found that BMAT models can be stably cultured for at least 3 months in vitro, and that myeloma cells (5TGM1, OPM2 and MM1S cells) can be cultured on these for at least 2 weeks. Upon tumor cell co-culture, delipidation occurred in BMAT adipocytes, suggesting a bidirectional relationship between these two important cell types in the malignant BM niche. Overall, our studies suggest that 3D BMAT represents a "healthier," more realistic tissue model that may be useful for elucidating the effects of MAT on tumor cells, and tumor cells on MAT, to identify novel therapeutic targets. In addition, proteomic characterization as well as microarray data (expression of >22,000 genes) coupled with KEGG pathway analysis and gene set expression analysis (GSEA) supported our development of less-inflammatory 3D BMAT compared to 2D culture. In sum, we developed the first 3D, tissue-engineered bone marrow adipose tissue model, which is a versatile, novel model that can be used to study numerous diseases and biological processes involved with the bone marrow.
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Affiliation(s)
- Heather Fairfield
- Maine Medical Center Research Institute, Scarborough, ME 04074, USA; University of Maine Graduate School of Biomedical Science and Engineering, Orono, ME 04469, USA; Tufts University School of Medicine, Boston, MA 02111, USA
| | - Carolyne Falank
- Maine Medical Center Research Institute, Scarborough, ME 04074, USA; University of Maine Graduate School of Biomedical Science and Engineering, Orono, ME 04469, USA; Tufts University School of Medicine, Boston, MA 02111, USA
| | - Mariah Farrell
- Maine Medical Center Research Institute, Scarborough, ME 04074, USA; University of Maine Graduate School of Biomedical Science and Engineering, Orono, ME 04469, USA; Tufts University School of Medicine, Boston, MA 02111, USA
| | - Calvin Vary
- Maine Medical Center Research Institute, Scarborough, ME 04074, USA; University of Maine Graduate School of Biomedical Science and Engineering, Orono, ME 04469, USA; Tufts University School of Medicine, Boston, MA 02111, USA
| | - Joshua M Boucher
- Maine Medical Center Research Institute, Scarborough, ME 04074, USA; University of Maine Graduate School of Biomedical Science and Engineering, Orono, ME 04469, USA; Tufts University School of Medicine, Boston, MA 02111, USA
| | - Heather Driscoll
- Vermont Genetics Network, Department of Biology, Norwich University, 158 Harmon Drive, Northfield, VT 05663, USA
| | - Lucy Liaw
- Maine Medical Center Research Institute, Scarborough, ME 04074, USA; University of Maine Graduate School of Biomedical Science and Engineering, Orono, ME 04469, USA; Tufts University School of Medicine, Boston, MA 02111, USA
| | - Clifford J Rosen
- Maine Medical Center Research Institute, Scarborough, ME 04074, USA; University of Maine Graduate School of Biomedical Science and Engineering, Orono, ME 04469, USA; Tufts University School of Medicine, Boston, MA 02111, USA
| | - Michaela R Reagan
- Maine Medical Center Research Institute, Scarborough, ME 04074, USA; University of Maine Graduate School of Biomedical Science and Engineering, Orono, ME 04469, USA; Tufts University School of Medicine, Boston, MA 02111, USA.
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27
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Affiliation(s)
- Saverio Cinti
- Professor of Human Anatomy, Director, Center of Obesity, University of Ancona (Politecnica delle Marche), Ancona, Italy
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28
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Kuroda M, Saito Y, Aso M, Yokote K. A Novel Approach to the Treatment of Plasma Protein Deficiency: Ex Vivo-Manipulated Adipocytes for Sustained Secretion of Therapeutic Proteins. Chem Pharm Bull (Tokyo) 2018; 66:217-224. [PMID: 29491255 DOI: 10.1248/cpb.c17-00786] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Despite the critical need for lifelong treatment of inherited and genetic diseases, there are no developmental efforts for most such diseases due to their rarity. Recent progress in gene therapy, including the approvals of two products (Glybera and Strimvelis) that may provide patients with sustained effects, has shed light on the development of gene therapy products. Most gene therapy products are based on either adeno-associated virus-mediated in vivo gene transfer to target tissues or administration of ex vivo gene-transduced hematopoietic cells. In such circumstances, there is room for different approaches to provide clinicians with other therapeutic options through a variety of principles based on studies not only to gain an understanding of the pathological mechanisms of diseases, but also to understand the physiological functions of target tissues and cells. In this review, we summarize recent progress in gene therapy-mediated enzyme replacement and introduce a different approach using adipocytes to enable lifelong treatment for intractable plasma protein deficiencies.
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Affiliation(s)
- Masayuki Kuroda
- Center for Advanced Medicine, Chiba University Hospital, Chiba University
| | | | | | - Koutaro Yokote
- Clinical Cell Biology and Medicine, Chiba University Graduate School of Medicine, Chiba University
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29
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Tsurumachi N, Akita D, Kano K, Matsumoto T, Toriumi T, Kazama T, Oki Y, Saito-Tamura Y, Tonogi M, Shimizu N, Honda M. Effect of collagenase concentration on the isolation of small adipocytes from human buccal fat pad. J Oral Sci 2018; 60:14-23. [PMID: 29479028 DOI: 10.2334/josnusd.16-0786] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Dedifferentiated fat (DFAT) cells were isolated from mature adipocytes using the ceiling culture method. Recently, we successfully isolated DFAT cells from adipocytes with a relatively small size (<40 μm). DFAT cells have a higher osteogenic potential than that of medium adipocytes. Therefore, the objective of this study was to determine the optimal concentration of collagenase solution for isolating small adipocytes from human buccal fat pads (BFPs). Four concentrations of collagenase solution (0.01%, 0.02%, 0.1%, and 0.5%) were used, and their effectiveness was assessed by the number of small adipocytes and DFAT cells isolated. The total number of floating adipocytes that dissociated with 0.02% collagenase was 2.5 times of that dissociated with 0.1% collagenase. The number of floating adipocytes with a diameter of ≤29 μm that dissociated with 0.02% collagenase was thrice of those dissociated with 0.1% and 0.5% collagenase. The number of DFAT cells that dissociated with 0.02% collagenase was 1.5 times of that dissociated with 0.1% collagenase. In addition, DFAT cells that dissociated with 0.02% collagenase had a higher osteogenic differentiation potential than those that dissociated with 0.1% collagenase. These results suggest that 0.02% is the optimal collagenase concentration for isolating small adipocytes from BFPs.
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Affiliation(s)
- Niina Tsurumachi
- Department of Orthodontics, Nihon University School of Dentistry
| | - Daisuke Akita
- Department of Partial Denture Prosthodontics, Nihon University School of Dentistry
| | - Koichiro Kano
- Laboratory of Cell and Tissue Biology, College of Bioresource Sciences, Nihon University
| | - Taro Matsumoto
- Department of Functional Morphology Division of Cell Regeneration and Transplantation, Nihon University School of Medicine
| | - Taku Toriumi
- Department of Anatomy, Nihon University School of Dentistry
| | - Tomohiko Kazama
- Department of Functional Morphology Division of Cell Regeneration and Transplantation, Nihon University School of Medicine
| | - Yoshinao Oki
- Laboratory of Cell and Tissue Biology, College of Bioresource Sciences, Nihon University
| | | | - Morio Tonogi
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry
| | | | - Masaki Honda
- Department of Oral Anatomy, Aichi Gakuin University School of Dentistry
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30
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Sarkarat F, Kahali R. Fat Graft with Growth Factors. Atlas Oral Maxillofac Surg Clin North Am 2018; 26:33-39. [PMID: 29362069 DOI: 10.1016/j.cxom.2017.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Farzin Sarkarat
- Department of Oral and MaxilloFacial Surgery, Craniomaxillofacial Research Center, Buali Hospital, Islamic Azad University Tehran Dental Branch, 10th Neyestan Street, Pasdaran Street, Tehran 1946853813, Iran.
| | - Roozbeh Kahali
- Department of Oral and MaxilloFacial Surgery, Craniomaxillofacial Research Center, Buali Hospital, Islamic Azad University Tehran Dental Branch, 10th Neyestan Street, Pasdaran Street, Tehran 1946853813, Iran
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32
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Dedifferentiated Adipocytes Promote Adipose Tissue Generation within an External Suspension Device. Plast Reconstr Surg 2017; 140:525-536. [DOI: 10.1097/prs.0000000000003601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Cell-cycle arrest in mature adipocytes impairs BAT development but not WAT browning, and reduces adaptive thermogenesis in mice. Sci Rep 2017; 7:6648. [PMID: 28751675 PMCID: PMC5532220 DOI: 10.1038/s41598-017-07206-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 06/26/2017] [Indexed: 01/26/2023] Open
Abstract
We previously reported brown adipocytes can proliferate even after differentiation. To test the involvement of mature adipocyte proliferation in cell number control in fat tissue, we generated transgenic (Tg) mice over-expressing cell-cycle inhibitory protein p27 specifically in adipocytes, using the aP2 promoter. While there was no apparent difference in white adipose tissue (WAT) between wild-type (WT) and Tg mice, the amount of brown adipose tissue (BAT) was much smaller in Tg mice. Although BAT showed a normal cellular morphology, Tg mice had lower content of uncoupling protein 1 (UCP1) as a whole, and attenuated cold exposure- or β3-adrenergic receptor (AR) agonist-induced thermogenesis, with a decrease in the number of mature brown adipocytes expressing proliferation markers. An agonist for the β3-AR failed to increase the number of proliferating brown adipocytes, UCP1 content in BAT, and oxygen consumption in Tg mice, although the induction and the function of beige adipocytes in inguinal WAT from Tg mice were similar to WT mice. These results show that brown adipocyte proliferation significantly contributes to BAT development and adaptive thermogenesis in mice, but not to induction of beige adipocytes.
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Maurizi G, Poloni A, Mattiucci D, Santi S, Maurizi A, Izzi V, Giuliani A, Mancini S, Zingaretti MC, Perugini J, Severi I, Falconi M, Vivarelli M, Rippo MR, Corvera S, Giordano A, Leoni P, Cinti S. Human White Adipocytes Convert Into “Rainbow” Adipocytes In Vitro. J Cell Physiol 2017; 232:2887-2899. [PMID: 27987321 DOI: 10.1002/jcp.25743] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 12/15/2016] [Indexed: 12/30/2022]
Affiliation(s)
- Giulia Maurizi
- Dipartimento Scienze Cliniche e Molecolari; Clinica di Ematologia; Università Politecnica delle Marche; Ancona Italy
| | - Antonella Poloni
- Dipartimento Scienze Cliniche e Molecolari; Clinica di Ematologia; Università Politecnica delle Marche; Ancona Italy
| | - Domenico Mattiucci
- Dipartimento Scienze Cliniche e Molecolari; Clinica di Ematologia; Università Politecnica delle Marche; Ancona Italy
| | - Spartaco Santi
- Istituto di Genetica Molecolare del CNR; Laboratorio di Biologia Cellulare Muscoloscheletrica, Istituti Ortopedici Rizzoli; Bologna Italy
| | - Angela Maurizi
- Dipartimento di Medicina Sperimentale e Clinica; Clinica Chirurgia del Pancreas; Università Politecnica delle Marche; Ancona Italy
| | - Valerio Izzi
- Faculty of Biochemistry and Molecular Medicine; Center for Cell-Matrix Research and Biocenter Oulu; University of Oulu; Oulu Finland
| | - Angelica Giuliani
- Dipartimento Scienze Cliniche e Molecolari; Laboratorio di Patologia Sperimentale; Ancona Italy
| | - Stefania Mancini
- Dipartimento Scienze Cliniche e Molecolari; Clinica di Ematologia; Università Politecnica delle Marche; Ancona Italy
| | - Maria Cristina Zingaretti
- Dipartimento di Medicina Sperimentale e Clinica; Center of Obesity; Università Politecnica delle Marche; Ancona Italy
| | - Jessica Perugini
- Dipartimento di Medicina Sperimentale e Clinica; Center of Obesity; Università Politecnica delle Marche; Ancona Italy
| | - Ilenia Severi
- Dipartimento di Medicina Sperimentale e Clinica; Center of Obesity; Università Politecnica delle Marche; Ancona Italy
| | - Massimo Falconi
- Dipartimento di Medicina Sperimentale e Clinica; Clinica Chirurgia del Pancreas; Università Politecnica delle Marche; Ancona Italy
| | - Marco Vivarelli
- Department of Experimental and Clinical Medicine; Hepatobiliary and Abdominal Transplantation Surgery; Università Politecnica delle Marche; Ancona Italy
| | - Maria Rita Rippo
- Dipartimento Scienze Cliniche e Molecolari; Laboratorio di Patologia Sperimentale; Ancona Italy
| | - Silvia Corvera
- Program in Molecular Medicine; University of Massachusetts Medical School; Worcester Massachusetts
| | - Antonio Giordano
- Dipartimento di Medicina Sperimentale e Clinica; Center of Obesity; Università Politecnica delle Marche; Ancona Italy
| | - Pietro Leoni
- Dipartimento Scienze Cliniche e Molecolari; Clinica di Ematologia; Università Politecnica delle Marche; Ancona Italy
| | - Saverio Cinti
- Dipartimento di Medicina Sperimentale e Clinica; Center of Obesity; Università Politecnica delle Marche; Ancona Italy
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Kassotis CD, Masse L, Kim S, Schlezinger JJ, Webster TF, Stapleton HM. Characterization of Adipogenic Chemicals in Three Different Cell Culture Systems: Implications for Reproducibility Based on Cell Source and Handling. Sci Rep 2017; 7:42104. [PMID: 28176856 PMCID: PMC5296734 DOI: 10.1038/srep42104] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 01/05/2017] [Indexed: 12/14/2022] Open
Abstract
The potential for chemical exposures to exacerbate the development and/or prevalence of metabolic disorders, such as obesity, is currently of great societal concern. Various in vitro assays are available to assess adipocyte differentiation, though little work has been done to standardize protocols and compare models effectively. This study compares several adipogenic cell culture systems under a variety of conditions to assess variability in responses. Two sources of 3T3-L1 preadipocytes as well as OP9 preadipocytes were assessed for cell proliferation and triglyceride accumulation following different induction periods and using various tissue culture plates. Both cell line and cell source had a significant impact on potencies and efficacies of adipogenic chemicals. Gene expression analyses suggested that differential expression of nuclear receptors involved in adipogenesis underlie the differences between OP9 and 3T3-L1 cells; however, there were also differences based on 3T3-L1 cell source. Induction period modulated potency and efficacy of response depending on cell line and test chemical, and large variations were observed in triglyceride accumulation and cell proliferation between brands of tissue culture plates. Our results suggest that the selection of a cell system and differentiation protocol significantly impacts the detection of adipogenic chemicals, and therefore, influences reproducibility of these studies.
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Affiliation(s)
| | - Lauren Masse
- Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA
| | - Stephanie Kim
- Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA
| | - Jennifer J Schlezinger
- Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA
| | - Thomas F Webster
- Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA
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36
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Ikado Y, Obinata D, Matsumoto T, Murata Y, Kano K, Fukuda N, Yamaguchi K, Takahashi S. Transplantation of mature adipocyte-derived dedifferentiated fat cells for the treatment of vesicoureteral reflux in a rat model. Int Urol Nephrol 2016; 48:1951-1960. [PMID: 27683029 DOI: 10.1007/s11255-016-1426-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 09/21/2016] [Indexed: 01/19/2023]
Abstract
PURPOSE Autologous cells potentially provide an ideal injectable substance for management in vesicoureteral reflux (VUR). The aim of this study is to examine the effects of mature adipocyte-derived dedifferentiated fat (DFAT) cell transplantation on VUR in a rat bladder pressurization-induced VUR model. METHODS To create VUR, Sprague-Dawley rats underwent urethral clamping and placement of cystostomy followed by intravesical pressurization. Rat DFAT cells (1 × 106 cells, DFAT group, n = 5) or saline (control group, n = 5) was then injected into the bilateral vesicoureteral junctions. Two weeks later, VUR grade was evaluated on cystography. The number of apoptotic cells in the renal pelvic urothelium, the ureteral inner/outer diameter ratio and the area of connective tissue in the posterior bladder wall were measured. RESULTS The reflux grade in the DFAT group was significantly lower than that in the control group. The number of apoptotic cells in the renal pelvic urothelium, ureteral inner/outer diameter ratio and connective tissue area in DFAT group were significantly lower in comparison with the control group. CONCLUSIONS DFAT cell transplantation improved VUR and exerted nephroprotective effects in a rat VUR model.
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Affiliation(s)
- Yuichiro Ikado
- Department of Urology, Nihon University School of Medicine, Tokyo, Japan
| | - Daisuke Obinata
- Department of Urology, Nihon University School of Medicine, Tokyo, Japan
| | - Taro Matsumoto
- Division of Cell Regeneration and Transplantation, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Oyaguchi-Kamicho, Itabashi-ku, Tokyo, 173-8610, Japan.
| | - Yasutaka Murata
- Department of Urology, Nihon University School of Medicine, Tokyo, Japan
| | - Koichiro Kano
- Laboratory of Cell and Tissue Biology, College of Bioresource Science, Nihon University, Fujisawa, Japan
| | - Noboru Fukuda
- Division of Cell Regeneration and Transplantation, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Oyaguchi-Kamicho, Itabashi-ku, Tokyo, 173-8610, Japan.,Advanced Medicine and Advanced Research Institute of Sciences and Humanities, Nihon University, Tokyo, Japan
| | - Kenya Yamaguchi
- Department of Urology, Nihon University School of Medicine, Tokyo, Japan
| | - Satoru Takahashi
- Department of Urology, Nihon University School of Medicine, Tokyo, Japan
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Huber B, Link A, Linke K, Gehrke SA, Winnefeld M, Kluger PJ. Integration of Mature Adipocytes to Build-Up a Functional Three-Layered Full-Skin Equivalent. Tissue Eng Part C Methods 2016; 22:756-64. [PMID: 27334067 PMCID: PMC4991605 DOI: 10.1089/ten.tec.2016.0141] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Large, deep full-thickness skin wounds from high-graded burns or trauma are not able to reepithelialize sufficiently, resulting in scar formation, mobility limitations, and cosmetic deformities. In this study, in vitro-constructed tissue replacements are needed. Furthermore, such full-skin equivalents would be helpful as in vivo-like test systems for toxicity, cosmetic, and pharmaceutical testing. Up to date, no skin equivalent is available containing the underlying subcutaneous fatty tissue. In this study, we composed a full-skin equivalent and evaluated three different media for the coculture of mature adipocytes, fibroblasts, and keratinocytes. Therefore, adipocyte medium was supplemented with ascorbyl-2-phosphate and calcium chloride, which are important for successful epidermal stratification (Air medium). This medium was further supplemented with two commercially available factor combinations often used for the in vitro culture of keratinocytes (Air-HKGS and Air-KGM medium). We showed that in all media, keratinocytes differentiated successfully to build a stratified epidermal layer and expressed cytokeratin 10 and 14. Perilipin A-positive adipocytes could be found in all tissue models for up to 14 days, whereas adipocytes in the Air-HKGS and Air-KGM medium seemed to be smaller. Adipocytes in all tissue models were able to release adipocyte-specific factors, whereas the supplementation of keratinocyte-specific factors had a slightly negative effect on adipocyte functionality. The permeability of the epidermis of all models was comparable since they were able to withstand a deep penetration of cytotoxic Triton X in the same manner. Taken together, we were able to compose functional three-layered full-skin equivalents by using the Air medium.
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Affiliation(s)
- Birgit Huber
- 1 Institute of Interfacial Process Engineering and Plasma Technology, University of Stuttgart , Stuttgart, Germany
| | - Antonia Link
- 2 Reutlingen University , School of Applied Chemistry, Reutlingen, Germany .,3 Fraunhofer Institut for Interfacial Engineering and Biotechnology IGB, Department Cell and Tissue Engineering, Stuttgart, Germany
| | - Kirstin Linke
- 3 Fraunhofer Institut for Interfacial Engineering and Biotechnology IGB, Department Cell and Tissue Engineering, Stuttgart, Germany
| | - Sandra A Gehrke
- 4 Beiersdorf AG, Research and Development , Hamburg, Germany
| | - Marc Winnefeld
- 4 Beiersdorf AG, Research and Development , Hamburg, Germany
| | - Petra J Kluger
- 2 Reutlingen University , School of Applied Chemistry, Reutlingen, Germany .,3 Fraunhofer Institut for Interfacial Engineering and Biotechnology IGB, Department Cell and Tissue Engineering, Stuttgart, Germany
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In situ characterization of the mTORC1 during adipogenesis of human adult stem cells on chip. Proc Natl Acad Sci U S A 2016; 113:E4143-50. [PMID: 27382182 DOI: 10.1073/pnas.1601207113] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Mammalian target of rapamycin (mTOR) is a central kinase integrating nutrient, energy, and metabolite signals. The kinase forms two distinct complexes: mTORC1 and mTORC2. mTORC1 plays an essential but undefined regulatory function for regeneration of adipose tissue. Analysis of mTOR in general is hampered by the complexity of regulatory mechanisms, including protein interactions and/or phosphorylation, in an ever-changing cellular microenvironment. Here, we developed a microfluidic large-scale integration chip platform for culturing and differentiating human adipose-derived stem cells (hASCs) in 128 separated microchambers under standardized nutrient conditions over 3 wk. The progression of the stem cell differentiation was measured by determining the lipid accumulation rates in hASC cultures. For in situ protein analytics, we developed a multiplex in situ proximity ligation assay (mPLA) that can detect mTOR in its two complexes selectively in single cells and implemented it on the same chip. With this combined technology, it was possible to reveal that the mTORC1 is regulated in its abundance, phosphorylation state, and localization in coordination with lysosomes during adipogenesis. High-content image analysis and parameterization of the in situ PLA signals in over 1 million cells cultured on four individual chips showed that mTORC1 and lysosomes are temporally and spatially coordinated but not in its composition during adipogenesis.
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Abbott RD, Wang RY, Reagan MR, Chen Y, Borowsky FE, Zieba A, Marra KG, Rubin JP, Ghobrial IM, Kaplan DL. The Use of Silk as a Scaffold for Mature, Sustainable Unilocular Adipose 3D Tissue Engineered Systems. Adv Healthc Mater 2016; 5:1667-77. [PMID: 27197588 PMCID: PMC4982640 DOI: 10.1002/adhm.201600211] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 03/29/2016] [Indexed: 01/04/2023]
Abstract
There is a critical need for monitoring physiologically relevant, sustainable, human adipose tissues in vitro to gain new insights into metabolic diseases. To support long-term culture, a 3D silk scaffold assisted culture system is developed that maintains mature unilocular adipocytes ex vivo in coculture with preadipocytes, endothelial cells, and smooth muscle cells obtained from small volumes of liquefied adipose samples. Without the silk scaffold, adipose tissue explants cannot be sustained in long-term culture (3 months) due to their fragility. Adjustments to media components are used to tune lipid metabolism and proliferation, in addition to responsiveness to an inflammatory stimulus. Interestingly, patient specific responses to TNFα stimulation are observed, providing a proof-of-concept translational technique for patient specific disease modeling in the future. In summary, this novel 3D scaffold assisted approach is required for establishing physiologically relevant, sustainable, human adipose tissue systems from small volumes of lipoaspirate, making this methodology of great value to studies of metabolism, adipokine-driven diseases, and other diseases where the roles of adipocytes are only now becoming uncovered.
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Affiliation(s)
- Rosalyn D. Abbott
- Biomedical Engineering, Tufts University, 4 Colby St. Medford MA 02155, United States of America
| | - Rebecca Y. Wang
- Biomedical Engineering, Tufts University, 4 Colby St. Medford MA 02155, United States of America
| | - Michaela R. Reagan
- School of Medicine, Harvard Institute, 4 Blackfan Circle, 2nd Floor, Suite 240 Boston, MA 02115, United States of America
| | - Ying Chen
- Biomedical Engineering, Tufts University, 4 Colby St. Medford MA 02155, United States of America
| | - Francis E. Borowsky
- Biomedical Engineering, Tufts University, 4 Colby St. Medford MA 02155, United States of America
| | - Adam Zieba
- Biomedical Engineering, Tufts University, 4 Colby St. Medford MA 02155, United States of America
| | - Kacey G. Marra
- Departments of Plastic Surgery in the School of Medicine at the University of Pittsburgh, 450 Technology Drive, Pittsburgh, PA 15219, United States of America
| | - J. Peter Rubin
- Departments of Plastic Surgery in the School of Medicine at the University of Pittsburgh, 450 Technology Drive, Pittsburgh, PA 15219, United States of America
| | - Irene M. Ghobrial
- School of Medicine, Harvard Institute, 4 Blackfan Circle, 2nd Floor, Suite 240 Boston, MA 02115, United States of America
| | - David L. Kaplan
- Biomedical Engineering, Tufts University, 4 Colby St. Medford MA 02155, United States of America
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Murata D, Yamasaki A, Matsuzaki S, Sunaga T, Fujiki M, Tokunaga S, Misumi K. Characteristics and multipotency of equine dedifferentiated fat cells. J Equine Sci 2016; 27:57-65. [PMID: 27330399 PMCID: PMC4914398 DOI: 10.1294/jes.27.57] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 03/23/2016] [Indexed: 12/14/2022] Open
Abstract
Dedifferentiated fat (DFAT) cells have been shown to be multipotent, similar to mesenchymal stem cells
(MSCs). In this study, we aimed to establish and characterize equine DFAT cells. Equine adipocytes were
ceiling cultured, and then dedifferentiated into DFAT cells by the seventh day of culture. The number of DFAT
cells was increased to over 10 million by the fourth passage. Flow cytometry of DFAT cells showed that the
cells were strongly positive for CD44, CD90, and major histocompatibility complex (MHC) class I; moderately
positive for CD11a/18, CD105, and MHC class II; and negative for CD34 and CD45. Moreover, DFAT cells were
positive for the expression of sex determining region Y-box 2 as a marker of multipotency. Finally, we found
that DFAT cells could differentiate into osteogenic, chondrogenic, and adipogenic lineages under specific
nutrient conditions. Thus, DFAT cells could have clinical applications in tissue regeneration, similar to MSCs
derived from adipose tissue.
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Affiliation(s)
- Daiki Murata
- Department of Veterinary Clinical Science, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
| | - Atsushi Yamasaki
- Department of Veterinary Clinical Science, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
| | - Shouta Matsuzaki
- Department of Veterinary Clinical Science, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
| | - Takafumi Sunaga
- Department of Veterinary Clinical Science, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
| | - Makoto Fujiki
- Department of Veterinary Clinical Science, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
| | - Satoshi Tokunaga
- Department of Veterinary Clinical Science, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
| | - Kazuhiro Misumi
- Department of Veterinary Clinical Science, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
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Huber B, Czaja AM, Kluger PJ. Influence of epidermal growth factor (EGF) and hydrocortisone on the co-culture of mature adipocytes and endothelial cells for vascularized adipose tissue engineering. Cell Biol Int 2016; 40:569-78. [DOI: 10.1002/cbin.10595] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Accepted: 02/14/2016] [Indexed: 12/30/2022]
Affiliation(s)
- Birgit Huber
- Institute for Interfacial Process Engineering and Plasma Technology; University of Stuttgart; Nobelstraße 12 Stuttgart 70569 Germany
| | - Alina Maria Czaja
- Esslingen University of Applied Sciences; Kanalstraße 33 Esslingen 73728 Germany
| | - Petra Juliane Kluger
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB; Nobelstraße 12 Stuttgart 70569 Germany
- Reutlingen University; Alteburgstr. 150 Reutlingen 72762 Germany
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Tsurumachi N, Akita D, Kano K, Matsumoto T, Toriumi T, Kazama T, Oki Y, Tamura Y, Tonogi M, Isokawa K, Shimizu N, Honda M. Small Buccal Fat Pad Cells Have High Osteogenic Differentiation Potential. Tissue Eng Part C Methods 2016; 22:250-9. [DOI: 10.1089/ten.tec.2015.0420] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Affiliation(s)
- Niina Tsurumachi
- Nihon University Graduate School of Dentistry, Chiyoda-ku, Japan
| | - Daisuke Akita
- Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Chiyoda-ku, Japan
| | - Koichiro Kano
- Laboratory of Cell and Tissue Biology, College of Bioresource Sciences, Nihon University, Fujisawa, Japan
| | - Taro Matsumoto
- Division of Cell Regeneration and Transplantation, Department of Functional Morphology, Nihon University School of Medicine, Itabashi-ku, Japan
| | - Taku Toriumi
- Department of Anatomy, Nihon University School of Dentistry, Chiyoda-ku, Japan
| | - Tomohiko Kazama
- Division of Cell Regeneration and Transplantation, Department of Functional Morphology, Nihon University School of Medicine, Itabashi-ku, Japan
| | - Yoshinao Oki
- Laboratory of Cell and Tissue Biology, College of Bioresource Sciences, Nihon University, Fujisawa, Japan
| | - Yoko Tamura
- Department of Orthodontics, Nihon University School of Dentistry, Chiyoda-ku, Japan
| | - Morio Tonogi
- Department of Oral Surgery, Nihon University School of Dentistry, Chiyoda-ku, Japan
| | - Keitaro Isokawa
- Department of Anatomy, Nihon University School of Dentistry, Chiyoda-ku, Japan
| | - Noriyoshi Shimizu
- Department of Orthodontics, Nihon University School of Dentistry, Chiyoda-ku, Japan
| | - Masaki Honda
- Department of Oral Anatomy, Aichi-Gakuin University School of Dentistry, Nagoya, Japan
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43
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Huber B, Kluger PJ. Decelerating Mature Adipocyte Dedifferentiation by Media Composition. Tissue Eng Part C Methods 2015; 21:1237-45. [DOI: 10.1089/ten.tec.2015.0166] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Birgit Huber
- Institute of Interfacial Process Engineering and Plasma Technology, University of Stuttgart, Stuttgart, Germany
| | - Petra J. Kluger
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, Stuttgart, Germany
- Process Analysis & Technology (PA&T), Reutlingen University, Reutlingen, Germany
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44
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Understanding the effects of mature adipocytes and endothelial cells on fatty acid metabolism and vascular tone in physiological fatty tissue for vascularized adipose tissue engineering. Cell Tissue Res 2015; 362:269-79. [PMID: 26340984 DOI: 10.1007/s00441-015-2274-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Accepted: 07/31/2015] [Indexed: 01/27/2023]
Abstract
Engineering of large vascularized adipose tissue constructs is still a challenge for the treatment of extensive high-graded burns or the replacement of tissue after tumor removal. Communication between mature adipocytes and endothelial cells is important for homeostasis and the maintenance of adipose tissue mass but, to date, is mainly neglected in tissue engineering strategies. Thus, new co-culture strategies are needed to integrate adipocytes and endothelial cells successfully into a functional construct. This review focuses on the cross-talk of mature adipocytes and endothelial cells and considers their influence on fatty acid metabolism and vascular tone. In addition, the properties and challenges with regard to these two cell types for vascularized tissue engineering are highlighted.
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45
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Omatsu-Kanbe M, Matsuura H. Novel intracellular mediator of adiponectin secretion from adipocytes. J Physiol 2015; 592:5141. [PMID: 25448182 DOI: 10.1113/jphysiol.2014.284778] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Mariko Omatsu-Kanbe
- Department of Physiology, Shiga University of Medical Science, Otsu, Shiga, 520-2192, Japan
| | - Hiroshi Matsuura
- Department of Physiology, Shiga University of Medical Science, Otsu, Shiga, 520-2192, Japan
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46
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Anayama H, Fukuda R, Yamate J. Adipose progenitor cells reside among the mature adipocytes: morphological research using an organotypic culture system. Cell Biol Int 2015; 39:1288-98. [PMID: 26095163 DOI: 10.1002/cbin.10503] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Accepted: 06/12/2015] [Indexed: 12/14/2022]
Abstract
The precise localization and biological characteristics of the adipose progenitor cells are still a focus of debate. In this study, the localization of the adipose progenitor cells was determined using an organotypic culture system of adipose tissue slices. The tissue slices of subcutaneous white adipose tissue from rats were placed on a porous membrane and cultured at the interface between air and the culture medium for up to 5 days with or without adipogenic stimulation. The structure of adipose tissue components was sufficiently preserved during the culture and, following adipogenic stimulation with insulin, dexamethasone, and 3-isobutyl-1-methylxanthine, numerous multilocular adipocytes appeared in the interstitium among the mature adipocytes. Histomorphological 3-D observation using confocal laser microscopy revealed the presence of small mesenchymal cells containing little or no fat residing in the perivascular region and on the mature adipocytes and differentiation from the pre-existing mesenchymal cells to multilocular adipocytes. Immunohistochemistry demonstrated that these cells were initially present within the fibronectin-positive extracellular matrix (ECM). The adipose differentiation of the mesenchymal cells was confirmed by the enhanced expression of C/EBP-β suggesting adipose differentiation and the concurrent advent of CD105-expressing mesenchymal cells within the interstitium of the mature adipocytes. Based on the above, the mesenchymal cells embedded in the ECM around the mature adipocytes were confirmed to be responsible for adipogenesis because the transition of the mesenchymal cells to the stem state contributed to the increase in the number of adipocytes in rat adipose tissue.
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Affiliation(s)
- Hisashi Anayama
- Drug Safety Research Laboratories, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi, 2-Chome, Fujisawa, Kanagawa, 251-8555, Japan.,Veterinary Pathology, Osaka Prefecture University, 1-58, Rinku-Oraikita, Izumisano, Osaka, 598-8531, Japan
| | - Ryo Fukuda
- Drug Safety Research Laboratories, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi, 2-Chome, Fujisawa, Kanagawa, 251-8555, Japan
| | - Jyoji Yamate
- Veterinary Pathology, Osaka Prefecture University, 1-58, Rinku-Oraikita, Izumisano, Osaka, 598-8531, Japan
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47
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Fu J, Li Z, Zhang H, Mao Y, Wang A, Wang X, Zou Z, Zhang X. Molecular pathways regulating the formation of brown-like adipocytes in white adipose tissue. Diabetes Metab Res Rev 2015; 31:433-52. [PMID: 25139773 DOI: 10.1002/dmrr.2600] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Revised: 05/06/2014] [Accepted: 07/23/2014] [Indexed: 01/29/2023]
Abstract
Adipose tissue is functionally composed of brown adipose tissue and white adipose tissue. The unique thermogenic capacity of brown adipose tissue results from expression of uncoupling protein 1 in the mitochondrial inner membrane. On the basis of recent findings that adult humans have functionally active brown adipose tissue, it is now recognized as playing a much more important role in human metabolism than was previously thought. More importantly, brown-like adipocytes can be recruited in white adipose tissue upon environmental stimulation and pharmacologic treatment, and this change is associated with increased energy expenditure, contributing to a lean and healthy phenotype. Thus, the promotion of brown-like adipocyte development in white adipose tissue offers novel possibilities for the development of therapeutic strategies to combat obesity and related metabolic diseases. In this review, we summarize recent advances in understanding the molecular mechanisms involved in the recruitment of brown-like adipocyte in white adipose tissue.
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Affiliation(s)
- Jianfei Fu
- Institute of Preventative Medicine and Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, 315211, Zhejiang, China
- Department of Medical Records and Statistics, Ningbo First Hospital, Ningbo, 315010, Zhejiang, China
| | - Zhen Li
- School of Public Health, Wuhan University, Wuhan, 430071, Hubei, China
| | - Huiqin Zhang
- Institute of Preventative Medicine and Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, 315211, Zhejiang, China
| | - Yushan Mao
- The Affiliated Hospital of School of Medicine of Ningbo University, Ningbo University, Ningbo, 315211, Zhejiang, China
| | - Anshi Wang
- Institute of Preventative Medicine and Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, 315211, Zhejiang, China
| | - Xin Wang
- Institute of Preventative Medicine and Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, 315211, Zhejiang, China
| | - Zuquan Zou
- Institute of Preventative Medicine and Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, 315211, Zhejiang, China
| | - Xiaohong Zhang
- Institute of Preventative Medicine and Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, School of Medicine, Ningbo University, Ningbo, 315211, Zhejiang, China
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Kaku M, Akiba Y, Akiyama K, Akita D, Nishimura M. Cell-based bone regeneration for alveolar ridge augmentation--cell source, endogenous cell recruitment and immunomodulatory function. J Prosthodont Res 2015; 59:96-112. [PMID: 25749435 DOI: 10.1016/j.jpor.2015.02.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 02/05/2015] [Indexed: 11/30/2022]
Abstract
Alveolar ridge plays a pivotal role in supporting dental prosthesis particularly in edentulous and semi-dentulous patients. However the alveolar ridge undergoes atrophic change after tooth loss. The vertical and horizontal volume of the alveolar ridge restricts the design of dental prosthesis; thus, maintaining sufficient alveolar ridge volume is vital for successful oral rehabilitation. Recent progress in regenerative approaches has conferred marked benefits in prosthetic dentistry, enabling regeneration of the atrophic alveolar ridge. In order to achieve successful alveolar ridge augmentation, sufficient numbers of osteogenic cells are necessary; therefore, autologous osteoprogenitor cells are isolated, expanded in vitro, and transplanted to the specific anatomical site where the bone is required. Recent studies have gradually elucidated that transplanted osteoprogenitor cells are not only a source of bone forming osteoblasts, they appear to play multiple roles, such as recruitment of endogenous osteoprogenitor cells and immunomodulatory function, at the forefront of bone regeneration. This review focuses on the current consensus of cell-based bone augmentation therapies with emphasis on cell sources, transplanted cell survival, endogenous stem cell recruitment and immunomodulatory function of transplanted osteoprogenitor cells. Furthermore, if we were able to control the mobilization of endogenous osteoprogenitor cells, large-scale surgery may no longer be necessary. Such treatment strategy may open a new era of safer and more effective alveolar ridge augmentation treatment options.
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Affiliation(s)
- Masaru Kaku
- Division of Bioprosthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
| | - Yosuke Akiba
- Division of Bioprosthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kentaro Akiyama
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Daisuke Akita
- Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan
| | - Masahiro Nishimura
- Department of Oral Maxillofacial Prosthodontics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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Fujisaki K, Fujimoto H, Sangai T, Nagashima T, Sakakibara M, Shiina N, Kuroda M, Aoyagi Y, Miyazaki M. Cancer-mediated adipose reversion promotes cancer cell migration via IL-6 and MCP-1. Breast Cancer Res Treat 2015; 150:255-63. [PMID: 25721605 DOI: 10.1007/s10549-015-3318-2] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 02/19/2015] [Indexed: 11/24/2022]
Abstract
The objective of this study is to investigate interactions between adipocytes and breast cancer cells, and identify the responsible factors for the observed effects. In 27 breast cancer patients undergoing mastectomy, mammary adipose tissue was obtained from the breast quadrant bearing the tumor and corresponding non-tumoral quadrant. Isolated normal breast adipocytes (NBAs) and cancer-associated adipocytes (CAAs) were cultured in collagen gels to mimic the in vivo environment. Immunohistochemistry, qRT-PCR, and cell proliferation assays were performed to analyze adipocyte phenotypes. MCF7 and MDA-MB-231 breast cancer cell lines were co-cultured with adipocytes to detect phenotypic changes. Migration of MCF7 and MDA-MB-231 cells was assessed in NBA- and CAA-conditioned media. Cytokine levels in conditioned media were measured by cytokine array. Migration assays were repeated using conditioned media containing neutralizing antibodies. NBAs and CAAs lost their morphological phenotype in culture, acquiring a spindle-like shape, and CAAs showed higher cell proliferation, suggesting reversion to an immature phenotype. In co-cultures with MCF7 or MDA-MB-231 cells, NBAs exhibited increased cell proliferation, indicating acquisition of the immature phenotype of CAAs. MCF7 and MDA-MB-231 showed higher migration in a CAA-conditioned medium than in an NBA-conditioned medium. Cytokine array analysis of conditioned media revealed higher levels of interleukin-6 (IL-6) and monocyte chemoattractant protein-1 (MCP-1) in the CAA-conditioned medium. Neutralization experiments using antibodies against IL-6 or MCP-1 showed abrogation of migration-enhancing effects of the CAA-conditioned medium. Adipocytes revert to an immature and proliferative phenotype in the presence of breast cancer cells, and promote cancer cell migration via adipokines including IL-6 and MCP-1.
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Affiliation(s)
- Kaoru Fujisaki
- Department of General Surgery, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-Ku, Chiba, 260-0856, Japan
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Song Z, Cheng J, Yang H, Li Y, Gao Q, Shi X, Yang G. Differentiation of 3T3-L1 preadipocytes is inhibited under a modified ceiling culture. Cell Biol Int 2015; 39:638-45. [PMID: 25572439 DOI: 10.1002/cbin.10428] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 12/26/2014] [Indexed: 12/22/2022]
Abstract
Ceiling culture is an inverted and closed cell culture system which represents a novel method for exploring adipocyte characteristics and function. Although the role of ceiling culture in mature adipocyte dedifferentiation has been extensively studied, its potential effects on preadipocyte differentiation remain unclear. In this study, we established a simplified dish ceiling culture method for 3T3-L1 preadipocytes and showed that our novel ceiling culture method could reproduce the function of the traditional flask ceiling culture. Then, we investigated the effects of ceiling culture on 3T3-L1 preadipocyte differentiation by Oil red O staining and RT-qPCR. The results showed that ceiling culture significantly impaired triglyceride accumulation and adipogenic marker genes expression in 3T3-L1 preadipocytes. These findings suggest that ceiling culture inhibited 3T3-L1 preadipocyte differentiation while inducing mature adipocytes dedifferentiation. Taken together, our data facilitate the understanding of the property of ceiling culture and promote the study of revealing the underlying mechanisms of mature adipocytes dedifferenatiation.
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Affiliation(s)
- Ziyi Song
- Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
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