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Jakl V, Popp T, Haupt J, Port M, Roesler R, Wiese S, Friemert B, Rojewski MT, Schrezenmeier H. Effect of Expansion Media on Functional Characteristics of Bone Marrow-Derived Mesenchymal Stromal Cells. Cells 2023; 12:2105. [PMID: 37626914 PMCID: PMC10453497 DOI: 10.3390/cells12162105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/07/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023] Open
Abstract
The therapeutic efficacy of mesenchymal stromal cells (MSCs) has been shown to rely on their immunomodulatory and regenerative properties. In order to obtain sufficient numbers of cells for clinical applications, MSCs have to be expanded ex vivo. Expansion media with xenogeneic-free (XF) growth-promoting supplements like human platelet lysate (PL) or serum- and xenogeneic-free (SF/XF) formulations have been established as safe and efficient, and both groups provide different beneficial qualities. In this study, MSCs were expanded in XF or SF/XF media as well as in mixtures thereof. MSCs cultured in these media were analyzed for phenotypic and functional properties. MSC expansion was optimal with SF/XF conditions when PL was present. Metabolic patterns, consumption of growth factors, and secretome of MSCs differed depending on the type and concentration of supplement. The lactate per glucose yield increased along with a higher proportion of PL. Many factors in the supernatant of cultured MSCs showed distinct patterns depending on the supplement (e.g., FGF-2, TGFβ, and insulin only in PL-expanded MSC, and leptin, sCD40L PDGF-AA only in SF/XF-expanded MSC). This also resulted in changes in cell characteristics like migratory potential. These findings support current approaches where growth media may be utilized for priming MSCs for specific therapeutic applications.
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Affiliation(s)
- Viktoria Jakl
- Institute for Transfusion Medicine, University Hospital Ulm, 89081 Ulm, Germany; (V.J.)
| | - Tanja Popp
- Bundeswehr Institute of Radiobiology, 80937 Munich, Germany (J.H.); (M.P.)
| | - Julian Haupt
- Bundeswehr Institute of Radiobiology, 80937 Munich, Germany (J.H.); (M.P.)
- Clinic for Trauma Surgery and Orthopedics, Army Hospital Ulm, 89081 Ulm, Germany
| | - Matthias Port
- Bundeswehr Institute of Radiobiology, 80937 Munich, Germany (J.H.); (M.P.)
| | - Reinhild Roesler
- Core Unit of Mass Spectrometry and Proteomics, Ulm University Medical Center, 89081 Ulm, Germany; (R.R.); (S.W.)
| | - Sebastian Wiese
- Core Unit of Mass Spectrometry and Proteomics, Ulm University Medical Center, 89081 Ulm, Germany; (R.R.); (S.W.)
| | - Benedikt Friemert
- Clinic for Trauma Surgery and Orthopedics, Army Hospital Ulm, 89081 Ulm, Germany
| | - Markus T. Rojewski
- Institute for Transfusion Medicine, University Hospital Ulm, 89081 Ulm, Germany; (V.J.)
- Institute for Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Donation Service Baden-Württemberg—Hessia and University Hospital Ulm, 89081 Ulm, Germany
| | - Hubert Schrezenmeier
- Institute for Transfusion Medicine, University Hospital Ulm, 89081 Ulm, Germany; (V.J.)
- Institute for Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Donation Service Baden-Württemberg—Hessia and University Hospital Ulm, 89081 Ulm, Germany
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2
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Ramos DM, Abdulmalik S, Arul MR, Sardashti N, Banasavadi-Siddegowda YK, Nukavarapu SP, Drissi H, Kumbar SG. Insulin-Functionalized Bioactive Fiber Matrices with Bone Marrow-Derived Stem Cells in Rat Achilles Tendon Regeneration. ACS APPLIED BIO MATERIALS 2022; 5:2851-2861. [PMID: 35642544 DOI: 10.1021/acsabm.2c00243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Approximately half of annual musculoskeletal injuries in the US involve tendon tears. The naturally hypocellular and hypovascular tendon environment makes tendons injury-prone and heal slowly. Tendon tissue engineering strategies often use biomimetic scaffolds combined with bioactive factors and/or cells to enhance healing. FDA-approved growth factors to promote tendon healing are lacking, which highlights the need for safe and effective bioactive factors. Our previous work evaluated insulin as a bioactive factor and identified an optimal dose to promote in vitro mesenchymal stem cell survival, division, and tenogenesis. The present work evaluates the ability of insulin-functionalized electrospun nanofiber matrices with or without mesenchymal stem cells to enhance tendon repair in a rat Achilles injury model. Electrospun nanofiber matrices were functionalized with insulin, cultured with or without mesenchymal stem cells, and sutured to transected Achilles tendons in rats. We analyzed rat tendons 4 and 8 weeks after surgery for the tendon morphology, collagen production, and mechanical properties. Bioactive insulin-functionalized fiber matrices with mesenchymal stem cells resulted in significantly increased collagen I and III at 4 and 8 weeks postsurgery. Additionally, these matrices supported highly aligned collagen fibrils in the regenerated tendon tissue at 8 weeks. However, treatment- and control-regenerated tissues had similar tensile properties at 8 weeks, which were less than that of the native Achilles tendon. Our preliminary results establish the benefits of insulin-functionalized fiber matrices in promoting higher levels of collagen synthesis and alignment needed for functional recovery of tendon repair.
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Affiliation(s)
- Daisy M Ramos
- Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut 06269, United States.,Department of Orthopedic Surgery, University of Connecticut Health, Farmington, Connecticut 06032-1941, United States
| | - Sama Abdulmalik
- Department of Orthopedic Surgery, University of Connecticut Health, Farmington, Connecticut 06032-1941, United States.,Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Michael R Arul
- Department of Orthopedic Surgery, University of Connecticut Health, Farmington, Connecticut 06032-1941, United States
| | - Naseem Sardashti
- Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Yeshavanth Kumar Banasavadi-Siddegowda
- Surgical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland 20892-0001, United States
| | - Syam P Nukavarapu
- Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut 06269, United States.,Department of Orthopedic Surgery, University of Connecticut Health, Farmington, Connecticut 06032-1941, United States.,Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Hicham Drissi
- Department of Orthopedic Surgery, School of Medicine, Emory University, Atlanta, Georgia 30322-1007, United States
| | - Sangamesh G Kumbar
- Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut 06269, United States.,Department of Orthopedic Surgery, University of Connecticut Health, Farmington, Connecticut 06032-1941, United States.,Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
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3
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Mukhamedshina Y, Zhuravleva M, Sergeev M, Zakirova E, Gracheva O, Mukhutdinova D, Rizvanov A. Improving Culture Conditions, Proliferation, and Migration of Porcine Mesenchymal Stem Cells on Spinal Cord Contusion Injury Model in vitro. Cells Tissues Organs 2021; 209:236-247. [PMID: 33508824 DOI: 10.1159/000511865] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 09/22/2020] [Indexed: 11/19/2022] Open
Abstract
Adipose tissue-derived mesenchymal stem cells (AD-MSCs) are promising for cell therapy in spinal cord injury (SCI). The pig is one of the most approximate models of many human diseases, including SCI. In our study, we selected the optimal conditions for the culture of porcine AD-MSCs and developed an in vitro SCI model based on the culture of cells in injured spinal cord extracts (SCE) 3 days and 6 weeks after SCI. We show that Dulbecco's Modified Eagle Medium (DMEM) with 20% serum content, supplemented with a combination of 5 mM L-ascorbate-2-phosphate and nonessential amino acids, stimulated a typical fibroblast-like morphology and high proliferation of porcine AD-MSCs. SCE caused a higher proliferation of porcine AD-MSCs compared with extracts from an intact spinal cord. The optimal proliferating effect was achieved using rostral 3 days SCE, and proliferation was lower in caudal and central SCE. Porcine AD-MSCs migration to the 3 days and 6 weeks SCE was higher than to an intact one and preferred the rostral SCE, avoiding central and caudal SCE. We also studied 13 cytokines contained in SCE but did not observe any definite relationship between some analyte concentrations and a change in the behavior of AD-MSCs.
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Affiliation(s)
- Yana Mukhamedshina
- Clinical Research Center for Precision and Regenerative Medicine, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation, .,Department of Histology, Cytology, and Embryology, Kazan State Medical University, Kazan, Russian Federation,
| | - Margarita Zhuravleva
- Clinical Research Center for Precision and Regenerative Medicine, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
| | - Mikhail Sergeev
- Clinical Research Center for Precision and Regenerative Medicine, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation.,Department of Veterinary Surgery, Obstetrics and Small Animal Pathology, Kazan State Academy of Veterinary, Kazan, Russian Federation
| | - Elena Zakirova
- Clinical Research Center for Precision and Regenerative Medicine, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
| | - Olga Gracheva
- Department of Therapy and Clinical Diagnostics with Radiology, Kazan State Academy of Veterinary, Kazan, Russian Federation
| | - Dina Mukhutdinova
- Department of Therapy and Clinical Diagnostics with Radiology, Kazan State Academy of Veterinary, Kazan, Russian Federation
| | - Albert Rizvanov
- Clinical Research Center for Precision and Regenerative Medicine, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
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Insulin Enhances the In Vitro Osteogenic Capacity of Flexor Tendon-Derived Progenitor Cells. Stem Cells Int 2019; 2019:1602751. [PMID: 31949435 PMCID: PMC6948345 DOI: 10.1155/2019/1602751] [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: 08/04/2019] [Revised: 11/17/2019] [Accepted: 11/30/2019] [Indexed: 12/13/2022] Open
Abstract
There is increased incidence of tendon disorders and decreased tendon healing capacity in people with diabetes mellitus (DM). Recent studies have also suggested pathological ossification in repair tendon of people with DM. Therefore, the objective of this study is to investigate the effects of insulin supplementation, an important pathophysiologic stimulus of DM, on tendon progenitor cell (TPC) proliferation and in vitro osteogenic capacity. Passage 3 TPCs were isolated from collagenase-digested, equine superficial digital flexor tendons. TPC proliferation was measured via MTT assay after 3 days of monolayer culture in medium supplemented with 0, 0.007, 0.07, and 0.7 nM insulin. In vitro osteogenic capacity of TPCs (Alizarin Red staining, osteogenic mRNA expression, and alkaline phosphatase bioactivity) was assessed with 0, 0.07, and 0.7 nM insulin-supplemented osteogenic induction medium. Insulin (0.7 nM) significantly increased TPC proliferation after 3 days of monolayer culture. Alizarin Red staining of insulin-treated TPC osteogenic cultures demonstrated robust cell aggregation and mineralized matrix secretion, in a dose-dependent manner. Runx2, alkaline phosphatase, and Osteonectin mRNA and alkaline phosphatase bioactivity of insulin-treated TPC cultures were significantly higher at day 14 of osteogenesis compared to untreated controls. Addition of picropodophyllin (PPP), a selective IGF-I receptor inhibitor, mitigated the increased osteogenic capacity of TPCs, indicating that IGF-I signaling plays an important role. Our findings indicate that hyperinsulinemia may alter TPC phenotype and subsequently impact the quality of repair tendon tissue.
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5
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Zhao M, Tang Y, Zhou Y, Zhang J. Deciphering Role of Wnt Signalling in Cardiac Mesoderm and Cardiomyocyte Differentiation from Human iPSCs: Four-dimensional control of Wnt pathway for hiPSC-CMs differentiation. Sci Rep 2019; 9:19389. [PMID: 31852937 PMCID: PMC6920374 DOI: 10.1038/s41598-019-55620-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 11/06/2019] [Indexed: 12/23/2022] Open
Abstract
Differentiation of cardiomyocytes (CMs) from human induced pluripotent stem cells (hiPSCs) is critically dependent upon the regulation of the Wnt signaling pathway. The mechanisms remain unclear with regard to the dose and timing of each differentiation inducer, and the interaction of the inducers that regulate the Wnt in mesendoderm specification to cardiac mesoderm. Consequently, it remains far from optimal in differentiation efficiency and consistency from hiPSC lines to CMs. Here, we have carefully deciphered the role of Wnt signaling pathway manipulation on mesoderm specification in a dosage and time dependent manner. To examine the hypothesis of that fate specification of hiPSC-CMs differentiation is dictated by temporal and spatial factors that regulate Wnt, we evaluate hiPSC-CM differentiation with: (1) two-phase modulation of Wnt, (2) dosage variant of GSK3β inhibitors, (3) treatment with insulin, and (4) 3-dimentional suspension culture environment on iPSC-CM differentiation. The results highlight the importance of mesendoderm specification to cardiac mesoderm, which needs precisely regulation of Wnt in a dosage dependent and temporal on/off manner. This temporal regulation dictates the final efficiency and purity of derived cardiomyocytes. After the initial activation of Wnt signaling pathway to generate mesendoderm, the maintenance of Wnt signaling at an appropriate dose is critical to direct the cell fate into cardiac mesoderm. Otherwise, lower Wnt signals lead to definitive endoderm and higher Wnt signals induce presomitic mesoderm differentiation. The precisely specification of cardiac mesoderm results in not only greater than 90% of cTnT+ cardiomyocytes but also high cardiomyocytes yield under both monolayer and suspension culture conditions. Thus, the current findings provide critical insights to decipher the temporal mechanism of Wnt activation in regulation of hiPSC-CMs differentiation, and more importantly provide the guidelines for the consistent and high-yield and high-quality hiPSC-CMs production in cardiovascular research.
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Affiliation(s)
- Meng Zhao
- Department of Biomedical Engineering, School of Medicine, School of Engineering, University of Alabama at Birmingham, Birmingham, AL35233, USA
| | - Yawen Tang
- Department of Biomedical Engineering, School of Medicine, School of Engineering, University of Alabama at Birmingham, Birmingham, AL35233, USA
| | - Yang Zhou
- Department of Biomedical Engineering, School of Medicine, School of Engineering, University of Alabama at Birmingham, Birmingham, AL35233, USA
| | - Jianyi Zhang
- Department of Biomedical Engineering, School of Medicine, School of Engineering, University of Alabama at Birmingham, Birmingham, AL35233, USA.
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Sun J, Zhou Y, Ye Z, Tan WS. Transforming growth factor-β1 stimulates mesenchymal stem cell proliferation by altering cell cycle through FAK-Akt-mTOR pathway. Connect Tissue Res 2019; 60:406-417. [PMID: 30642198 DOI: 10.1080/03008207.2019.1570171] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Background: Mesenchymal stem cells (MSCs) are promising for cell therapy and regenerative medicine. An increased need for expanding of MSCs under serum-free condition to achieve a sufficient quantity for therapeutic applications is inevitable. Transforming growth factor-β1 (TGF-β1) is widely used for expanding clinical-grade MSCs in vitro. This work focuses on the influence of TGF-β1 on proliferation in rat bone marrow-derived MSCs (BMSCs) and the underlying mechanism. Materials and Methods: BMSCs were isolated and cultured with or without TGF-β1 in a serum-free medium and Cell Counting Kit-8 assay was used to detect BMSCs proliferation. Cell cycle transition was also analyzed. Further, the expression levels of cyclin D1, phosphorylated focal adhesion kinase, and downstream effectors in Akt-mTOR-S6K1 signaling pathway were examined by western blotting. Results and Conclusion: TGF-β1 triggered proliferation via accelerating G1/S cell cycle transition in BMSCs. The addition of TGF-β1 can activate Akt-mTOR-S6K1 pathway. Additionally, FAK was found to be involved in the process. Upon adding the FAK inhibitor, both the activation of Akt-mTOR-S6K1 and TGF-β1-induced cell proliferation were abrogated. Together, an insight understanding of how TGF-β1 influences BMSCs proliferation is achieved. This study provides a possible strategy of supplementing TGF-β1 in serum-free medium for in vitro expansion, which eventually would advance the production of clinical-grade MSCs for regenerative medicine.
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Affiliation(s)
- Jie Sun
- a State Key Laboratory of Bioreactor Engineering , East China University of Science and Technology , Shanghai , P. R. China
| | - Yan Zhou
- a State Key Laboratory of Bioreactor Engineering , East China University of Science and Technology , Shanghai , P. R. China
| | - Zhaoyang Ye
- a State Key Laboratory of Bioreactor Engineering , East China University of Science and Technology , Shanghai , P. R. China
| | - Wen-Song Tan
- a State Key Laboratory of Bioreactor Engineering , East China University of Science and Technology , Shanghai , P. R. China
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7
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Gu C, Li P, Liu W, Zhou Y, Tan W. The role of insulin in transdifferentiated hepatocyte proliferation and function in serum-free medium. J Cell Mol Med 2019; 23:4165-4178. [PMID: 30950200 PMCID: PMC6533558 DOI: 10.1111/jcmm.14303] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 02/20/2019] [Accepted: 03/14/2019] [Indexed: 12/22/2022] Open
Abstract
Transdifferentiated hepatocytes are potential seeding cells for bioartificial liver (BAL) treatment, and it is important to obtain a sufficient number of functional hepatocytes in serum-free medium (SFM). Although insulin plays an essential role in promoting cell proliferation and metabolism, the functions of insulin in transdifferentiated cells remain poorly understood. Here, we found that 1.0 mg/L insulin significantly increased human-induced hepatocyte-like cells (hiHeps) proliferation and viability in SFM. The pro-proliferative effect of insulin on these cells occurred via augmented cyclin D1 expression that was mediated by activation of the Akt1/mTOR/p70S6K and Akt1/P53 pathways. Further studies revealed that insulin also enhanced the specific liver function of hiHeps in SFM. Additionally, Western blotting and siHNF1A transfection analysis showed that insulin increased the protein expression of Albumin (ALB) and UDP-glucuronosyltransferase1A1 (UGT1A1 ) in hiHeps via HNF1A. Finally, hiHep proliferation and the expression of specific genes were maintained during long-term passaging in SFM supplemented with 1.0 mg/L insulin. Collectively, our findings show that insulin promotes transdifferentiated hiHep proliferation and specific functional expression. These findings have important implications for the expansion of functional hiHeps prior to clinical applications of BALs.
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Affiliation(s)
- Ce Gu
- State Key Laboratory of Bioreactor EngineeringEast China University of Science and TechnologyShanghaiP. R. China
| | - Panpan Li
- State Key Laboratory of Bioreactor EngineeringEast China University of Science and TechnologyShanghaiP. R. China
| | - Wei Liu
- State Key Laboratory of Bioreactor EngineeringEast China University of Science and TechnologyShanghaiP. R. China
| | - Yan Zhou
- State Key Laboratory of Bioreactor EngineeringEast China University of Science and TechnologyShanghaiP. R. China
| | - Wen‐Song Tan
- State Key Laboratory of Bioreactor EngineeringEast China University of Science and TechnologyShanghaiP. R. China
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8
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Jiang Q, Tian J, Liu G, Yin Y, Yao K. Endoplasmic Reticulum Stress and Unfolded Protein Response Pathways Involved in the Health-Promoting Effects of Allicin on the Jejunum. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:6019-6031. [PMID: 31067048 DOI: 10.1021/acs.jafc.9b02180] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Intestinal endoplasmic reticulum stress (ERS) triggered by adverse factors disturbs the normal function of the intestine. Allicin has been reported to promote intestinal health and development. In the present study, we established in vivo (35-day-old weaned piglets, 4-week-old mice) and in vitro (IPEC-J2 cell line) ERS models to explore the possible mechanisms by which allicin may benefit intestinal health. This study revealed the following: (1) allicin supplementation improved intestinal morphological indices and ameliorated mild ERS in the jejunum of the weaned piglets; (2) allicin supplementation decreased cellular reactive oxygen species and upregulated the XBP-1s signaling pathways in IPEC-J2 cells; (3) allicin supplementation reduced the prolonged ERS-mediated apoptosis of IPEC-J2 cells and in the jejunal tissues of the KM mice; (4) allicin supplementation enhanced the intercellular junction protein levels of jejunal cells by alleviating the prolonged ERS. These novel findings suggest that eating garlic could alleviate some intestinal malfunctions associated with ERS.
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Affiliation(s)
- Qian Jiang
- Laboratory of Animal Nutritional Physiology and Metabolic Process , Institute of Subtropical Agriculture Chinese Academy of Sciences , Changsha , Hunan 410125 , P.R. China
- University of Chinese Academy of Sciences , Beijing 100043 , P.R. China
- Department of Animal Science , University of Manitoba , Winnipeg , MB R3T 2N2 , Canada
| | - Junquan Tian
- Laboratory of Animal Nutritional Physiology and Metabolic Process , Institute of Subtropical Agriculture Chinese Academy of Sciences , Changsha , Hunan 410125 , P.R. China
| | - Gang Liu
- Laboratory of Animal Nutritional Physiology and Metabolic Process , Institute of Subtropical Agriculture Chinese Academy of Sciences , Changsha , Hunan 410125 , P.R. China
| | - Yulong Yin
- Laboratory of Animal Nutritional Physiology and Metabolic Process , Institute of Subtropical Agriculture Chinese Academy of Sciences , Changsha , Hunan 410125 , P.R. China
| | - Kang Yao
- Laboratory of Animal Nutritional Physiology and Metabolic Process , Institute of Subtropical Agriculture Chinese Academy of Sciences , Changsha , Hunan 410125 , P.R. China
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9
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Ramos DM, Abdulmalik S, Arul MR, Rudraiah S, Laurencin CT, Mazzocca AD, Kumbar SG. Insulin immobilized PCL-cellulose acetate micro-nanostructured fibrous scaffolds for tendon tissue engineering. POLYM ADVAN TECHNOL 2019; 30:1205-1215. [PMID: 30956516 PMCID: PMC6448803 DOI: 10.1002/pat.4553] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 01/03/2019] [Indexed: 12/28/2022]
Abstract
Use of growth factors as biochemical molecules to elicit cellular differentiation is a common strategy in tissue engineering. However, limitations associated with growth factors, such as short half-life, high effective physiological doses, and high costs, have prompted the search for growth factor alternatives, such as growth factor mimics and other proteins. This work explores the use of insulin protein as a biochemical factor to aid in tendon healing and differentiation of cells on a biomimetic electrospun micro-nanostructured scaffold. Dose response studies were conducted using human mesenchymal stem cells (MSCs) in basal media supplemented with varied insulin concentrations. A dose of 100-ng/mL insulin showed increased expression of tendon markers. Synthetic-natural blends of various ratios of polycaprolactone (PCL) and cellulose acetate (CA) were used to fabricate micro-nanofibers to balance physicochemical properties of the scaffolds in terms of mechanical strength, hydrophilicity, and insulin delivery. A 75:25 ratio of PCL:CA was found to be optimal in promoting cellular attachment and insulin immobilization. Insulin insulin deliveryimmobilized fiber matrices also showed increased expression of tendon phenotypic markers by MSCs similar to findings with insulin supplemented media, indicating preservation of insulin bioactivity. Insulin functionalized scaffolds may have potential applications in tendon healing and regeneration.
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Affiliation(s)
- Daisy M. Ramos
- Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut
- Department of Orthopaedic Surgery, University of Connecticut Health, Farmington, Connecticut
| | - Sama Abdulmalik
- Department of Orthopaedic Surgery, University of Connecticut Health, Farmington, Connecticut
- Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut
| | - Michael R. Arul
- Department of Orthopaedic Surgery, University of Connecticut Health, Farmington, Connecticut
| | - Swetha Rudraiah
- Department of Pharmaceutical Sciences, University of Saint Joseph, Hartford, Connecticut
| | - Cato T. Laurencin
- Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut
- Department of Orthopaedic Surgery, University of Connecticut Health, Farmington, Connecticut
- Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut
| | - Augustus D. Mazzocca
- Department of Orthopaedic Surgery, University of Connecticut Health, Farmington, Connecticut
| | - Sangamesh G. Kumbar
- Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut
- Department of Orthopaedic Surgery, University of Connecticut Health, Farmington, Connecticut
- Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut
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10
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Liu BS, Dai XY, Xia HW, Xu HJ, Tang QL, Gong QY, Nie YZ, Bi F. Geranylgeranyl transferase 1 inhibitor GGTI‑298 enhances the anticancer effect of gefitinib. Mol Med Rep 2018; 18:4023-4029. [PMID: 30106149 DOI: 10.3892/mmr.2018.9371] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 05/11/2018] [Indexed: 02/05/2023] Open
Abstract
Dysregulation of epidermal growth factor receptor (EGFR) signaling is responsible for the resistance to EGFR tyrosine kinase inhibitors (TKIs), such as gefitinib and erlotinib, and is thereby associated with the progression of tumors in non‑small cell lung cancers (NSCLCs). Immunoblotting results revealed that geranylgeranyl transferase 1 inhibitor (GGTI)‑298, a geranylgeranyl transferase 1 inhibitor with potential antitumor effects, effectively inhibited the phosphorylation of EGFR and its downstream target protein kinase B (AKT). A combination of gefitinib and GGTI‑298 amplified the inhibition of the EGFR‑AKT signaling pathway. In addition, GGTI‑298 treatment produced a synergistic effect on the inhibition of proliferation as indicated by the combination index values of <1 when combined with gefitinib in the NSCLC cell lines HCC827 and A549. These synergistic effects were also observed to induce apoptosis and migration inhibition. Further mechanistic studies demonstrated that GGTI‑298 inhibited the activity of Ras homolog family member A (RhoA), and downregulation of RhoA with small interfering RNA impaired the phosphorylation of EGFR, which suggested that EGFR inhibition by GGTI‑298 may be exerted mainly through RhoA mediation. These results presented a novel, promising therapeutic strategy involving a combination of two drugs for targeting EGFR signaling in lung cancer.
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Affiliation(s)
- Bi-Sheng Liu
- Department of Medical Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Xin-Yu Dai
- Department of Medical Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Hong-Wei Xia
- Laboratory of Molecular Targeted Therapy in Oncology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Huan-Ji Xu
- Department of Medical Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Qiu-Lin Tang
- Laboratory of Molecular Targeted Therapy in Oncology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Qi-Yong Gong
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Yong-Zhan Nie
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digest Diseases, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Feng Bi
- Department of Medical Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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