1
|
Gooraninejad S, Hoveizi E, Hushmandi K, Gooraninejad S, Tabatabaei SRF. Small Molecule Differentiate PDX1-Expressing Cells Derived from Human Endometrial Stem Cells on PAN Electrospun Nanofibrous Scaffold: Applications for the Treatment of Diabetes in Rat. Mol Neurobiol 2020; 57:3969-3978. [PMID: 32632606 DOI: 10.1007/s12035-020-02007-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 06/26/2020] [Indexed: 12/30/2022]
Abstract
In this study, we designed an engineered tissue and transplanted it to an animal model, trying to take an effective step toward meeting the needs of diabetic patients. Here, human endometrial cells were differentiated into PDX1-expressing cells using a small molecule of Y-27632 on polyacrylonitrile (PAN) electrospun scaffolds and transplanted into diabetic rats. PAN nanofibers were made by electrospinning. RT-PCR and immunocytochemical analysis were performed to express pancreatic precursor (PP) genes. The differentiated cells were then transplanted into the abdominal cavity of diabetic rats with Streptozotocin. In another group of rats, differentiated cells were injected through the tail. Blood glucose was measured 7, 14, and 28 days after transplantation, and rat weight was also measured. The results showed that the expression of PP markers including Sox-17, Ngn3, Pdx1, and NKx2.2 genes was significantly increased in differentiated cells compared to the control group. In diabetic rats receiving differentiated cells, both transplanted and injected, glucose concentration as well as body weight improved compared to the control group. Rats receiving transplants in the peritoneum had a lower blood glucose concentration than those in the cell receiving group by injection, and the cell receiving group in the form of injections was more effective in increasing the body weight of rats than in the other groups. According to the results of the study, the transplantation of PP from endometrium using PAN scaffolding at the site of peritoneum could be recommended for the treatment of diabetes, although further studies are needed to provide a complete cure.
Collapse
Affiliation(s)
- Saad Gooraninejad
- Department of Clinical Science, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Elham Hoveizi
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Kiavash Hushmandi
- DVM Graduate, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Sina Gooraninejad
- DVM Graduate, Faculty of Veterinary Medicine, Islamic Azad Branch, University of Shushtar, Shushtar, Iran
| | - Seyed Reza Fatemi Tabatabaei
- Division of Physiology, Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| |
Collapse
|
2
|
Gurevich LE, Proshchina AE, Voronkova IA, Ashevskaya VE, Korosteleva PA, Dolzhansky OV. [Differential diagnostic value of the expression of the transcription factor PDX-1 in neuroendocrine and non-neuroendocrine tumors of the pancreas and other organs]. Arkh Patol 2019; 81:11-21. [PMID: 31626200 DOI: 10.17116/patol20198105111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
An important role in the differentiation of tissues in different organs is played by transforming factors (TFs); pancreatic and duodenal homebox 1 (PDX-1) is one of the earliest factors for pancreatic cells. Many malignant tumors, including neuroendocrine tumors (NETs), are similar in structure, and therefore the actual problem of oncomorphology is to search for narrow-specific markers and TFs. AIM to comparatively analyze and assess the value of the expression of the TF PDX-1 in NETs and non-NETs of different localization and histogenetic origin. MATERIAL AND METHODS Anti-PDX-1 antibodies were used to study 528 tumors divided into 3 groups: Group 1 included 394 NETs, among them there were those of the pancreas (n=173), stomach (n=46), bowel (n=65), lung (n=40), thymus (n=8), kidney (n=6), Merkel's cell carcinomas (n=14), NETs of the breast (n=3), larynx (n=2), trachea (n=2), bladder (n=1), and metastatic NETs (n=34) of unknown primary site; Group 2 consisted of 16 tumors, of them there were paragangliomas (n=6), medullary thyroid cancers (MTC) (n=6) and adrenal pheochromocytomas (APCC) (n=4); Group 3 comprised 118 non-NETs, among them there were tumors of the pancreas (n=54), stomach (n=26), bowel (n=17), lung (n=11), breast (n=3), kidney (n=4), adrenal glands (n=2), and bladder (n=1). RESULTS PDX-1 was positive in 75.1% (130/173) of pancreatic NETs, all insulinomas (50/50), gastrinomas (11/11), somatostatinomas (3/3), ACTH-producing tumors (2/2); PDX-1 was positive in the non-functioning pancreatic NETs, all PPomas (19/19), 76.1% (35/46) of NETs without the hormone detected, 50% (2/4) of calcitoninomas, and 21.1% (8/38) of silent glucagonomas. PDX-1 was positive in 32.4% (11/34) of carcinoids and 50% (6/12) of neuroendocrine carcinomas, all duodenal NETs (18/18), 90% (9/10) of rectal carcinoids and 30.8% (4/13) colonic carcinoids, 37.5% (3/8) of thymic/mediastinal carcinoids, 66.7% (4/6) of kidney carcinoids, and 37.5% (9/24) of metastatic NETs of unknown primary site. PDX-1 was negative in all carcinoids of the colon and sigmoid (0/5), ileum and jejunum (0/24), lung (0/40), trachea (0/2), larynx (0/2), Merkel's cell carcinoma (0/14), breast (0/3), bladder (0/1), as well as MTC (0/6), APCC (0/4), and paragangliomas (0/6). PDX-1-positive non-NETs included 81.8% (18/22) of adenocarcinomas (AC) and all serous cystic, mucinous cystic, intraductal and acinar cell tumors of the pancreas (4/4, 3/3, 2/2, and 3/3), 57.1% of AC (8/14) and 83.3% of signet ring cell carcinomas of the stomach (10/12), 56.2% AC of the bowel (9/17), bladder cancer (1/1). PDX-1 was negative in all anaplastic cancers (0/2) and solid pseudopapillary tumors of the pancreas (0/20), cancers of the lung (0/11), kidney (0/4), breast (0/3), and adrenal glands (0/2). CONCLUSION The expression of PDX-1 is very specific for most digestive tract NETs and non-NETs. Pancreatic ductal and acinar cell tumors and gastric signet ring cell carcinomas are most commonly PDX-1-positive. Most tumors that do not originate from the digestive tract have a PDX-1 negative immunophenotype.
Collapse
Affiliation(s)
- L E Gurevich
- M.F.Vladimirsky Moscow Regional Research Clinical Institute, Moscow, Russia
| | | | - I A Voronkova
- M.F.Vladimirsky Moscow Regional Research Clinical Institute, Moscow, Russia
| | - V E Ashevskaya
- M.F.Vladimirsky Moscow Regional Research Clinical Institute, Moscow, Russia
| | - P A Korosteleva
- M.F.Vladimirsky Moscow Regional Research Clinical Institute, Moscow, Russia
| | - O V Dolzhansky
- M.F.Vladimirsky Moscow Regional Research Clinical Institute, Moscow, Russia
| |
Collapse
|
3
|
Abstract
OBJECTIVES Spexin is a peptide whose action is poorly understood but which is expressed in many tissues. This encouraged us to investigate the potential role of spexin in the regulation of pancreatic secretion. METHODS Cells/islets were incubated with different concentrations of glucose and spexin to measure insulin secretion. MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assays and BrdU (5-bromo-2'-deoxyuridine) tests were performed to assess the viability and proliferation of pancreatic islets after spexin treatment. Real-time polymerase chain reaction was used to detect messenger RNA expression for insulin, insulin receptor, and Pdx (pancreatic duodenal homeobox-1). RESULTS Insulin secretion from cultured cells and isolated islets was reduced by spexin at 16 mM glucose level. In obese rats, insulin secretion was decreased after injection with spexin. Spexin treatment showed an increase in cultured cells and pancreatic islets cell viability and proliferation as well as an increase in proliferating cell nuclear antigen protein level. In contrast, a decrease in insulin and Pdx gene expression was found. CONCLUSIONS The effects of spexin on insulin secretion in vitro and in vivo and also on cells viability and proliferation confirm that this peptide may be strongly involved in the pathogenesis of diabetes or its recovery.
Collapse
|
4
|
Wang H, Ren Q, Han X, Chen J, Zhou L, Chen Y, Ji L. Factors of primary and secondary sulfonylurea failure in type 2 diabetic subjects. J Diabetes 2017; 9:1091-1099. [PMID: 28233424 DOI: 10.1111/1753-0407.12542] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 02/06/2017] [Accepted: 02/20/2017] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND The aim of the present study was to investigate the value of clinical characteristics in predicting sulfonylurea (SU) treatment responses. METHODS All 747 subjects in the present study were from the Xiaoke Pill Clinical Trial evaluating the safety and efficacy of SU. Subjects had the same initial dose of glibenclamide and drug doses were adjusted every 4 weeks during the 48-week follow-up period. Primary SU failure was defined as a <10% reduction in fasting plasma glucose (FPG) at the end of Week 4 from randomization, whereas secondary SU failure was defined as a consecutive confirmed level of FPG >7 mmol/L. RESULTS Kaplan-Meier survival analysis revealed that lower baseline basal disposition index (DI b ) and higher FPG predict secondary SU failure. Inversely, higher baseline DI b and lower FPG predict primary SU failure. Primary SU failure can predict secondary SU failure. The combination of lower baseline DI b with primary SU failure is a better predictor of secondary SU failure than lower baseline DI b or primary SU failure alone. CONCLUSIONS Patients with good glycemic control and higher β-cell reserve at entry are more likely to experience primary SU failure but are less likely to experience secondary SU failure. By combining baseline DI b with initial response at the first month of treatment, we can get quick information about the long-term efficacy of SU treatment.
Collapse
Affiliation(s)
- Huaiqing Wang
- Department of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing, China
| | - Qian Ren
- Department of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing, China
| | - Xueyao Han
- Department of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing, China
| | - Jing Chen
- Department of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing, China
| | - Lingli Zhou
- Department of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing, China
| | - Yingli Chen
- Department of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing, China
| | - Linong Ji
- Department of Endocrinology and Metabolism, Peking University People's Hospital, Peking University Diabetes Center, Beijing, China
| |
Collapse
|
5
|
Soares JMD, Pereira Leal AEB, Silva JC, Almeida JRGS, de Oliveira HP. Influence of Flavonoids on Mechanism of Modulation of Insulin Secretion. Pharmacogn Mag 2017; 13:639-646. [PMID: 29200726 PMCID: PMC5701404 DOI: 10.4103/pm.pm_87_17] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 07/31/2017] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The development of alternatives for insulin secretion control in vivo or in vitro represents an important aspect to be investigated. In this direction, natural products have been progressively explored with this aim. In particular, flavonoids are potential candidates to act as insulin secretagogue. OBJECTIVE To study the influence of flavonoid on overall modulation mechanisms of insulin secretion. METHODS The research was conducted in the following databases and platforms: PubMed, Scopus, ISI Web of Knowledge, SciELO, LILACS, and ScienceDirect, and the MeSH terms used for the search were flavonoids, flavones, islets of Langerhans, and insulin-secreting cells. RESULTS Twelve articles were included and represent the basis of discussion on mechanisms of insulin secretion of flavonoids. Papers in ISI Web of Knowledge were in number of 1, Scopus 44, PubMed 264, ScienceDirect 511, and no papers from LILACS and SciELO databases. CONCLUSION According to the literature, the majority of flavonoid subclasses can modulate insulin secretion through several pathways, in an indication that corresponding molecule is a potential candidate for active materials to be applied in the treatment of diabetes. SUMMARY The action of natural products on insulin secretion represents an important investigation topic due to their importance in the diabetes controlIn addition to their typical antioxidant properties, flavonoids contribute to the insulin secretionThe modulation of insulin secretion is induced by flavonoids according to different mechanisms. Abbreviations used: KATP channels: ATP-sensitive K+ channels, GLUT4: Glucose transporter 4, ERK1/2: Extracellular signal-regulated protein kinases 1 and 2, L-VDCCs: L-type voltage-dependent Ca+2 channels, GLUT1: Glucose transporter 1, AMPK: Adenosine monophosphate-activated protein kinase, PTP1B: Protein tyrosine phosphatase 1B, GLUT2: Glucose transporter 2, cAMP: Cyclic adenosine monophosphate, PKA: Protein kinase A, PTK: Protein tyrosine kinase, CaMK II: Ca2+/calmodulin-dependent protein kinase II, GSIS: Glucose-stimulated insulin secretion, Insig-1: Insulin-induced gene 1, IRS-2: Insulin receptor substrate 2, PDX-1: Pancreatic and duodenal homeobox 1, SREBP-1c: Sterol regulatory element binding protein-1c, DMC: Dihydroxy-6'-methoxy-3',5'-dimethylchalcone, GLP-1: Glucagon-like peptide-1, GLP-1R: Glucagon-like peptide 1 receptor.
Collapse
Affiliation(s)
| | | | - Juliane Cabral Silva
- Department of Physiology, Federal University of Sergipe, São Cristóvão, SE, Brazil
| | | | | |
Collapse
|
6
|
Usman S, Khan I, Naeem N, Iqbal H, Ali A, Usman S, Salim A. Conditioned media trans-differentiate mature fibroblasts into pancreatic beta-like cells. Life Sci 2016; 164:52-59. [PMID: 27593573 DOI: 10.1016/j.lfs.2016.08.032] [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: 05/15/2016] [Revised: 08/22/2016] [Accepted: 08/31/2016] [Indexed: 10/21/2022]
Abstract
AIM The study was carried out to evaluate the role of preconditioning strategies on the trans-differentiation of mature fibroblasts (NIH3T3 cells) into insulin producing β-cells. METHODS The NIH3T3 cells were treated with dexamethasone (5μM) and pancreatic extract (0.05 and 0.4mg/mL) separately or in combination. The treated cells were analyzed for the morphological changes, and expression of pancreatic genes and proteins by phase contrast microscopy, RT-PCR and flow cytometry/immunocytochemistry, respectively. RESULTS Treatment of mature fibroblasts with different combinations of dexamethasone and pancreatic extract in the form of conditioned media resulted in comparable morphological changes and expression of certain pancreatic genes and proteins; however, their expression varied with each treatment. Most prominent effect was observed in case of combined treatment which resulted in significant increase (p<0.001) in gene expression levels of insulin, MafA, and Ngn3. Variable pattern was observed in insulin, MafA, Ngn3 and Sca1 expressions at the protein level. CONCLUSION It is concluded from this study that preconditioning of NIH3T3 cells with conditioned media containing different combinations of dexamethasone and pancreatic extract can induce trans-differentiation of these cells into pancreatic β-like cells. The conditioned media however, need to be optimized. The study may offer the possibility of improved regeneration of mature cell type that could serve as a future therapeutic option for diabetes.
Collapse
Affiliation(s)
- Shumaila Usman
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
| | - Irfan Khan
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
| | - Nadia Naeem
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan; Dow University of Health Sciences, Ojha Campus, Gulzar-e-Hijri,Suparco Road, KDA Scheme-33, Karachi, Pakistan
| | - Hana'a Iqbal
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
| | - Anwar Ali
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan; Department of Physiology, University of Karachi, Karachi-75270, Pakistan
| | - Sehrish Usman
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
| | - Asmat Salim
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan.
| |
Collapse
|
7
|
FTIR Spectroscopic and Molecular Analysis during Differentiation of Pluripotent Stem Cells to Pancreatic Cells. Stem Cells Int 2016; 2016:6709714. [PMID: 27651798 PMCID: PMC5019938 DOI: 10.1155/2016/6709714] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 07/12/2016] [Accepted: 07/20/2016] [Indexed: 12/17/2022] Open
Abstract
Some of the greatest challenges in stem cells (SCs) biology and regenerative medicine are differentiation control of SCs and ensuring the purity of differentiated cells. In this work, we differentiated mouse pluripotent stem cells (mPSCs) toward pancreatic cells characterizing this differentiation process by molecular and spectroscopic technics. Both mPSCs and Differentiated Pancreatic Cells (DPCs) were subjected to a genetic, phenotypic, and biochemical analysis by real-time quantitative PCR (RT-qPCR), immunocytochemistry, and Fourier Transform Infrared (FTIR) spectroscopy. Cultured mPCSs expressed pluripotent genes and proteins (Nanog and SOX2). DPCs expressed endodermal genes (SOX17 and Pdx1) at day 11, an inductor gene of embryonic pancreas development (Pdx1) at day 17 and pancreas genes and proteins (Insulin and Glucagon) at day 21 of differentiation. Likewise, FTIR spectra of mPSCs and DPCs at different maturation stages (11, 17, and 21 days) were obtained and showed absorption bands related with different types of biomolecules. These FTIR spectra exhibited significant spectral changes agreeing with the differentiation process, particularly in proteins and nucleic acids bands. In conclusion, the obtained DPCs passed through the chronological stages of embryonic pancreas development and FTIR spectra provide a new biophysical parameter based on molecular markers indicating the differentiation process of mPSCs to specialized cells.
Collapse
|
8
|
Merabet S, Galliot B. The TALE face of Hox proteins in animal evolution. Front Genet 2015; 6:267. [PMID: 26347770 PMCID: PMC4539518 DOI: 10.3389/fgene.2015.00267] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 07/31/2015] [Indexed: 01/22/2023] Open
Abstract
Hox genes are major regulators of embryonic development. One of their most conserved functions is to coordinate the formation of specific body structures along the anterior-posterior (AP) axis in Bilateria. This architectural role was at the basis of several morphological innovations across bilaterian evolution. In this review, we traced the origin of the Hox patterning system by considering the partnership with PBC and Meis proteins. PBC and Meis belong to the TALE-class of homeodomain-containing transcription factors and act as generic cofactors of Hox proteins for AP axis patterning in Bilateria. Recent data indicate that Hox proteins acquired the ability to interact with their TALE partners in the last common ancestor of Bilateria and Cnidaria. These interactions relied initially on a short peptide motif called hexapeptide (HX), which is present in Hox and non-Hox protein families. Remarkably, Hox proteins can also recruit the TALE cofactors by using specific PBC Interaction Motifs (SPIMs). We describe how a functional Hox/TALE patterning system emerged in eumetazoans through the acquisition of SPIMs. We anticipate that interaction flexibility could be found in other patterning systems, being at the heart of the astonishing morphological diversity observed in the animal kingdom.
Collapse
Affiliation(s)
- Samir Merabet
- Centre National de Recherche Scientifique, Institut de Génomique Fonctionnelle de Lyon Lyon, France ; Institut de Génomique Fonctionnelle de Lyon, Ecole Normale Supérieure de Lyon Lyon, France
| | - Brigitte Galliot
- Department of Genetics and Evolution, Faculty of Science, Institute of Genetics and Genomics in Geneva, University of Geneva Geneva, Switzerland
| |
Collapse
|
9
|
An L, Wang Y, Wang C, Fan M, Han X, Xu G, Yuan G, Li H, Sheng Y, Wang M, Sun J, Zhan J, Sun H, Li N, Ding F, Du P. Protective effect of Schisandrae chinensis oil on pancreatic β-cells in diabetic rats. Endocrine 2015; 48:818-25. [PMID: 25151401 DOI: 10.1007/s12020-014-0375-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 07/29/2014] [Indexed: 01/10/2023]
Abstract
Islet cell dysfunction in type 2 diabetes is primarily attributed to increased apoptosis of pancreatic β-Cells. The aim of the present study was to investigate the effects of Schisandrae chinensis oil on pancreatic β-Cells in type 2 diabetes mellitus rats and the associated molecular mechanisms of action. Wistar rats were randomly divided into diabetic rats and control rats, diabetic rats treated with Schisandrae chinensis oil (1 mg/kg), and control rats treated with Schisandrae chinensis oil. The serum fasting blood glucose, insulin, total cholesterol, and triglyceride levels along with MDA content, SOD and CAT activities in pancreatic tissues were measured. TUNEL was used to observe the apoptosis of rat pancreatic cells. Western blot was used to determine specific protein expression. The results showed that the oil significantly decreased fasting blood glucose, total cholesterol, triglyceride levels as well as the pancreatic MDA, but increased SOD and CAT activities. The protein expression of Bcl-2, PDX-1, GLUT-2, and GCK but not caspase 3 was significantly enhanced in the oil-treated rats compared with diabetic rats. However, Bax content was not significantly different between the control and DM groups. Schisandra chinensis oil improves pancreatic β-cell function by enhancing antioxidant potential of the pancreas, upregulating the expression of anti-apoptotic genes, increasing expression of glucose metabolism, and delaying islet cell apoptosis.
Collapse
Affiliation(s)
- Liping An
- College of Pharmacy, Beihua University, Jilin, 132013, Jilin, People's Republic of China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Liu XD, Ruan JX, Xia JH, Yang SL, Fan JH, Li K. The study of regulatory effects of Pdx-1, MafA and NeuroD1 on the activity of porcine insulin promoter and the expression of human islet amyloid polypeptide. Mol Cell Biochem 2014; 394:59-66. [DOI: 10.1007/s11010-014-2081-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 05/03/2014] [Indexed: 10/25/2022]
|
11
|
Hu YC, Hao DM, Zhou LX, Zhang Z, Huang N, Hoptroff M, Lu YH. 2',4'-Dihydroxy-6'-methoxy-3',5'-dimethylchalcone protects the impaired insulin secretion induced by glucotoxicity in pancreatic β-cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:1602-1608. [PMID: 24437980 DOI: 10.1021/jf405365d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
2',4'-Dihydroxy-6'-methoxy-3',5'-dimethylchalcone (DMC), which is isolated and purified from the dried flower buds of Cleistocalyx operculatus (Roxb.) Merr. et Perry (Myrtaceae), was investigated for its insulinotropic benefits against glucotoxicity using in vitro methods. When exposed to high glucose at the cytotoxicity level for 48 h, RIN-5F β-cells experienced a significant viability loss and impaired insulin secretion function, whereas cotreating with DMC could protect β-cells against glucotoxicity-induced decrease in glucose-stimulated insulin secretion in a dose-dependent manner without affecting basal insulin secretion. It was demonstrated that DMC increased insulin secretion against glucotoxicity by simulating the effect of GLP-1 and enhancing the expression of GLP-1R, followed by activating the signal pathway of PDX-1, PRE-INS, and GLUT2-GCK. Another mechanism was that DMC avoided the pancreatic islet dysfunction resulting from cellular damage by suppressing the production of nitric oxide (NO) by iNOS, and the expression of MCP-1. The results indicated the potential application of DMC in the intervention against glucotoxicity-induced hyperglycemia.
Collapse
Affiliation(s)
- Ying-Chun Hu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, P. R. China
| | | | | | | | | | | | | |
Collapse
|
12
|
Novelli M, Canistro D, Martano M, Funel N, Sapone A, Melega S, Masini M, De Tata V, Pippa A, Vecoli C, Campani D, De Siena R, Soleti A, Paolini M, Masiello P. Anti-diabetic properties of a non-conventional radical scavenger, as compared to pioglitazone and exendin-4, in streptozotocin-nicotinamide diabetic mice. Eur J Pharmacol 2014; 729:37-44. [PMID: 24530416 DOI: 10.1016/j.ejphar.2014.01.071] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 01/22/2014] [Accepted: 01/24/2014] [Indexed: 12/13/2022]
Abstract
We previously showed that the innovative radical scavenger bis(1-hydroxy-2,2,6,6-tetramethyl-4-piperidinyl)-decandioate (IAC) improves metabolic dysfunctions in a diabetic mouse model. Here, we compared the in vivo effects of IAC with those of the anti-diabetic drugs pioglitazone (PIO) and exendin-4 (EX-4). Diabetes was induced in C57Bl/6J mice by streptozotocin and nicotinamide administration. Paralleled by healthy controls, diabetic animals (D) were randomly assigned to four groups and treated daily for 7 consecutive weeks: D+saline, ip; D+IAC 30mg/kgb.w., ip; D+PIO 10mg/kgb.w. per os; and D+EX-4, 50μg/kgb.w., ip. Our results show that IAC reduced basal hyperglycemia and improved glucose tolerance better than PIO or EX-4. Interestingly, in the heart of diabetic mice, IAC treatment normalized the increased levels of GSSG/GSH ratio and thiobarbituric acid reactive substances, indexes of oxidative stress and damage, while PIO and EX-4 were less effective. As supported by immunohistochemical data, IAC markedly prevented diabetic islet β-cell reduced density, differently from PIO and EX-4 that had only a moderate effect. Interestingly, in diabetic animals, IAC treatment enhanced the activity of pancreatic-duodenal homeobox 1 (PDX-1), an oxidative stress-sensitive transcription factor essential for maintenance of β-cell function, as evaluated by quantification of its nuclear immunostaining, whereas PIO or EX-4 treatments did not. Altogether, these observations support the improvement of the general redox balance and β-cell function induced by IAC treatment in streptozotocin-nicotinamide diabetic mice. Furthermore, in this model, the correction of diabetic alterations was better obtained by treatment with the radical scavenger IAC than with pioglitazone or exendin-4.
Collapse
Affiliation(s)
- Michela Novelli
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy
| | - Donatella Canistro
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | | | - Niccola Funel
- Department of Surgical, Medical, Molecular, and Critical Area Pathology, University of Pisa, Via Savi 10, 56126 Pisa, Italy
| | - Andrea Sapone
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Simone Melega
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Matilde Masini
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy
| | - Vincenzo De Tata
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy
| | - Anna Pippa
- Institute of Clinical Physiology, CNR, Via Moruzzi 1, 56124 Pisa, Italy
| | - Cecilia Vecoli
- Institute of Clinical Physiology, CNR, Via Moruzzi 1, 56124 Pisa, Italy
| | - Daniela Campani
- Department of Surgical, Medical, Molecular, and Critical Area Pathology, University of Pisa, Via Savi 10, 56126 Pisa, Italy
| | | | | | - Moreno Paolini
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Via Irnerio 48, 40126 Bologna, Italy
| | - Pellegrino Masiello
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy.
| |
Collapse
|
13
|
Chen X, Rozance PJ, Hay WW, Limesand SW. Insulin-like growth factor and fibroblast growth factor expression profiles in growth-restricted fetal sheep pancreas. Exp Biol Med (Maywood) 2012; 237:524-9. [PMID: 22581814 DOI: 10.1258/ebm.2012.011375] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Placental insufficiency results in intrauterine growth restriction (IUGR), impaired fetal insulin secretion and less fetal pancreatic β-cell mass, partly due to lower β-cell proliferation rates. Insulin-like growth factors (IGFs) and fibroblast growth factors (FGFs) regulate fetal β-cell proliferation and pancreas development, along with transcription factors, such as pancreatic and duodenal homeobox 1 (PDX-1). We determined expression levels for these growth factors, their receptors and IGF binding proteins in ovine fetal pancreas and isolated islets. In the IUGR pancreas, relative mRNA expression levels of IGF-I, PDX-1, FGF7 and FGFR2IIIb were 64% (P < 0.01), 76% (P < 0.05), 76% (P < 0.05) and 52% (P < 0.01) lower, respectively, compared with control fetuses. Conversely, insulin-like growth factor binding protein 2 (IGFBP-2) mRNA and protein concentrations were 2.25- and 1.2-fold greater (P < 0.05) in the IUGR pancreas compared with controls. In isolated islets from IUGR fetuses, IGF-II and IGFBP-2 mRNA concentrations were 1.5- and 3.7-fold greater (P < 0.05), and insulin mRNA was 56% less (P < 0.05) than control islets. The growth factor expression profiles for IGF and FGF signaling pathways indicate that declines in β-cell mass are due to decreased growth factor signals for both pancreatic progenitor epithelial cell and mature β-cell replication.
Collapse
Affiliation(s)
- Xiaochuan Chen
- Agricultural Research Complex, Department of Animal Sciences, University of Arizona, 4101 N Campbell Ave, Tucson, AZ 85719, USA
| | | | | | | |
Collapse
|
14
|
Abstract
Patients with type 1 diabetes, and most patients with type 2 diabetes, have associated hyperglycemia due to the absence or reduction of insulin production by pancreatic β-cells. Surgical resection of the pancreas may also cause insulin-dependent diabetes depending on the size of the remaining pancreas. Insulin therapy has greatly improved the quality of life of diabetic patients, but this method is inaccurate and requires lifelong treatment that only mitigates the symptoms. The successes achieved over the last few decades by the transplantation of whole pancreas and isolated islets suggest that diabetes can be cured by the replenishment of deficient β-cells. These observations are proof-of-principle and have intensified interest in treating diabetes by cell transplantation, and by the use of stem cells. Pancreatic stem/progenitor cells could be one of the sources for the treatment of diabetes. Islet neogenesis, the budding of new islets from pancreatic stem/progenitor cells located in or near pancreatic ducts, has long been assumed to be an active process in the postnatal pancreas. Several in vitro studies have shown that insulin-producing cells can be generated from adult pancreatic ductal tissues. Acinar cells may also be a potential source for differentiation into insulin-producing cells. This review describes recent progress on pancreatic stem/progenitor cell research for the treatment of diabetes.
Collapse
Affiliation(s)
- Hirofumi Noguchi
- Regenerative Research Islet Transplant Program, Baylor Research Institute, 1400 8th Avenue, Fort Worth, TX 76104, USA.
| |
Collapse
|
15
|
Quint K, Stintzing S, Alinger B, Hauser-Kronberger C, Dietze O, Gahr S, Hahn EG, Ocker M, Neureiter D. The expression pattern of PDX-1, SHH, Patched and Gli-1 is associated with pathological and clinical features in human pancreatic cancer. Pancreatology 2008; 9:116-26. [PMID: 19077462 DOI: 10.1159/000178882] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2007] [Accepted: 07/08/2008] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS Pancreatic cancer cells have been shown to possess stem-cell-like properties, especially by reactivating embryonic transcription factors involved in tissue differentiation. We therefore investigated if and to what extent developmental genes of the human pancreas are expressed in pancreatic ductal adenocarcinomas and precursor lesions, pancreatic intraepithelial neoplasia (PanIN), and if this correlates or predicts response to treatment and overall survival. MATERIAL AND METHODS Invasive ductal adenocarcinomas of the pancreas [UICC pT3pN0 (n = 13) vs. pT3pN1 (n = 25)] and tumors after neoadjuvant chemotherapy [5-fluorouracil (FU)/folic-acid and gemcitabine; UICC ypN0 (n = 7) vs. ypN1 (n = 6)] resected between 1997 and 2003 were characterized histochemically and immunohistochemically [pancreas duodenum homeobox 1 (PDX-1), Sonic hedgehog protein (SHH), Patched (Ptc) and Gli-1]. Gene distribution was compared with morphological patterns of the pancreatic carcinoma and PanIN as well as with peritumorous reactions of normal pancreas. RESULTS The overall expression of PDX-1, SHH, Ptc and Gli-1 was low, but showed a distinctive and topographic linkage inside pancreatic carcinomas as well as inside PanINs. Additionally, a topographic and significant association of these markers with nodal status (PDX-1, Ptc, Gli-1), tumor size (PDX-1, Gli-1) and R status (PDX-1) was found. After stratification with the strongest outcome predictor, grading, survival analysis revealed that Ptc expression in grade 2 and PDX-1 expression in grade 3 carcinomas are independent survival factors. CONCLUSIONS Markers of pancreas development are reexpressed in invasive ductal adenocarcinomas and their expression is essentially associated with general clinical and pathological features such as survival or nodal status.
Collapse
Affiliation(s)
- Karl Quint
- Department of Medicine 1, University Hospital Erlangen, Erlangen, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|