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Coutinho ML, Miller AZ, Martin-Sanchez PM, Mirão J, Gomez-Bolea A, Machado-Moreira B, Cerqueira-Alves L, Jurado V, Saiz-Jimenez C, Lima A, Phillips AJL, Pina F, Macedo MF. A multiproxy approach to evaluate biocidal treatments on biodeteriorated majolica glazed tiles. Environ Microbiol 2016; 18:4794-4816. [PMID: 27235544 DOI: 10.1111/1462-2920.13380] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 05/17/2016] [Indexed: 02/02/2023]
Abstract
The Fishing House located on the grounds of the Marquis of Pombal Palace, Oeiras, Portugal, was built in the 18th century. During this epoch, Portuguese gardens, such as the one surrounding the Fishing House, were commonly ornamented with glazed wall tile claddings. Currently, some of these outdoor tile panels are covered with dark colored biofilms, contributing to undesirable aesthetic changes and eventually inducing chemical and physical damage to the tile surfaces. Phylogenetic analyses revealed that the investigated biofilms are mainly composed of green algae, cyanobacteria and dematiaceous fungi. With the aim of mitigating biodeterioration, four different biocides (TiO2 nanoparticles, Biotin® T, Preventol® RI 80 and Albilex Biostat® ) were applied in situ to the glazed wall tiles. Their efficacy was monitored by visual examination, epifluorescence microscopy and DNA-based analysis. Significant changes in the microbial community composition were observed 4 months after treatment with Preventol® RI 80 and Biotin® T. Although the original community was inactivated after these treatments, an early stage of re-colonization was detected 6 months after the biocide application. TiO2 nanoparticles showed promising results due to their self-cleaning effect, causing the detachment of the biofilm from the tile surface, which remained clean 6 and even 24 months after biocide application. © 2013 Society for Applied Microbiology and John Wiley & Sons Ltd.
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Lima A, Zhu H, Wang R, Yan T, Su X, Li L, Wang B, Na S, Qi G, Zhou H. [Construction of Fat-1 eukaryotic expression vector of excision markers and the establishment of transgenic sheep cell lines]. SHENG WU GONG CHENG XUE BAO = CHINESE JOURNAL OF BIOTECHNOLOGY 2016; 32:212-221. [PMID: 27382771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In order to establish marker-free transgenic cell lines, we cloned Fat-1 gene, attB and Loxp sequences by PCR. Then we inserted these sequences to pN1-EGFP vector and got pEGFP-N1-Fat-1 expression vector. PhiC31 integrase mRNA which was generated by in vitro transcription and a pEGFP-N1-Fat-1 expression vector co-electroporated into sheep fetal fibroblasts, and then we got transgenic cell lines expressing green fluorescence. Prokaryotic expression and purification of Cre recombinant protein was performed. Cre recombinant protein was transducted into stably-transfected cell colonies. We identified cell colonies by sequencing and established marker-free transgenic cell lines and eventually- established marker-free transgenic cell lines which were building more safely basic for producing Fat-1 transgenic animals.
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Correia M, Soares A, Cucato G, Lima A, Gomes A, Prazeres T, Rodrigues S, Sobral-Filho D, Santos A, Brasileiro-Santos M, Ritti-Dias R. Vascular Mechanisms of Post-exercise Blood Pressure Responses in Peripheral Artery Disease. Int J Sports Med 2015; 36:1046-51. [DOI: 10.1055/s-0035-1555853] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Zaidat O, Castonguay A, Nogueira R, Ramakrishnan P, Haussen D, Lima A, English J, Farid H, Veznedaroglu E, Binning M, Puri A, Hou S, Janardhan V, Vora N, Budzik R, Alshekhlee A, Abraham M, Edgell R, Taqi M, Lin E, Khoury R, Mokin M, Majjhoo A, Kabbani M, Froehler M, Finch I, Prabhakaran S, Novakovic R, Nguyen T, Wesley J. O-008 final revascularization and clinical outcome results from the multicenter trevo stent-retriever acute stroke (track) post-marketing registry. J Neurointerv Surg 2015. [DOI: 10.1136/neurintsurg-2015-011917.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Grigoryan M, Haussen D, Lima A, Grossberg J, Anderson A, Belagaje S, Nahab F, Frankel M, Nogueira R. E-030 clinical and angiographic outcomes in endovascular treatment of tandem vessel occlusions in acute ischemic stroke. J Neurointerv Surg 2015. [DOI: 10.1136/neurintsurg-2015-011917.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Castonguay A, Zaidat O, Nogueira R, Ramakrishnan P, Haussen D, Lima A, English J, Farid H, Veznedaroglu E, Binning M, Puri A, Hou S, Janardhan V, Vora N, Budzik R, Alshekhlee A, Abraham M, Edgell R, Taqi M, Lin E, Khoury R, Mokin M, Majjhoo A, Kabbani M, Froehler M, Finch I, Prabhakaran S, Novakovic R, Nguyen T. E-055 analysis of a mr clean-like group in the multicenter track registry. J Neurointerv Surg 2015. [DOI: 10.1136/neurintsurg-2015-011917.130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Lima A, Bernardes M, Azevedo R, Medeiros R, Seabra V. SAT0064 Moving Towards Personalized Medicine in Rheumatoid Arthritis: Atic Polymorphisms as Pharmacogenetic Predictors of Methotrexate Therapeutic Outcome. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Martinez P, Lopes V, Pagan L, Bonomo C, Gomes M, Oliveira Junior S, Cezar M, Damatto R, Lima A, Fernandes D, Laurindo F, Zornoff L, Okoshi K, Okoshi M. Influence of
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‐Acetylcysteine on Apoptosis in White‐Gastrocnemius Muscle of Rats With Chronic Heart Failure. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.lb710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ferreira J, Aragão LEOC, Barlow J, Barreto P, Berenguer E, Bustamante M, Gardner TA, Lees AC, Lima A, Louzada J, Pardini R, Parry L, Peres CA, Pompeu PS, Tabarelli M, Zuanon J. Environment and Development. Brazil's environmental leadership at risk. Science 2014; 346:706-7. [PMID: 25378611 DOI: 10.1126/science.1260194] [Citation(s) in RCA: 195] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Brocca M, Pietranera L, Roig P, Lima A, De Nicola A. Effects of 17β-estradiol on the cytoarchitecture of pyramidal CA1 neurons in normoglycemic and diabetic male spontaneously hypertensive rats. Neuroscience 2014; 280:243-53. [DOI: 10.1016/j.neuroscience.2014.09.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 08/25/2014] [Accepted: 09/11/2014] [Indexed: 12/20/2022]
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Ferin R, Lima A, Santos E, Almeida C, Pelicano N, Martins D, Baptista J, Pavão M. performance of apo A-I and B, and other cardiovascular risk factors in Azorean patients with coronary artery disease - preliminary results. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lima A, Sardinha VM, Oliveira AF, Reis M, Mota C, Silva MA, Marques F, Cerqueira JJ, Pinto L, Sousa N, Oliveira JF. Astrocyte pathology in the prefrontal cortex impairs the cognitive function of rats. Mol Psychiatry 2014; 19:834-41. [PMID: 24419043 DOI: 10.1038/mp.2013.182] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 11/08/2013] [Accepted: 11/12/2013] [Indexed: 11/09/2022]
Abstract
Interest in astroglial cells is rising due to recent findings supporting dynamic neuron-astrocyte interactions. There is increasing evidence of astrocytic dysfunction in several brain disorders such as depression, schizophrenia or bipolar disorder; importantly these pathologies are characterized by the involvement of the prefrontal cortex and by significant cognitive impairments. Here, to model astrocyte pathology, we injected animals with the astrocyte specific toxin L-α-aminoadipate (L-AA) in the medial prefrontal cortex (mPFC); a behavioral and structural characterization two and six days after the injection was performed. Behavioral data shows that the astrocyte pathology in the mPFC affects the attentional set-shifting, the working memory and the reversal learning functions. Histological analysis of brain sections of the L-AA-injected animals revealed a pronounced loss of astrocytes in the targeted region. Interestingly, analysis of neurons in the lesion sites showed a progressive neuronal loss that was accompanied with dendritic atrophy in the surviving neurons. These results suggest that the L-AA-induced astrocytic loss in the mPFC triggers subsequent neuronal damage leading to cognitive impairment in tasks depending on the integrity of this brain region. These findings are of relevance to better understand the pathophysiological mechanisms underlying disorders that involve astrocytic loss/dysfunction in the PFC.
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Lima A, Azevedo A, Sousa H, Bernardes M, Medeiros R, Seabra V. AB0223 SLC19A1, SLCO1B1 and ABCG2 Polymorphisms Are Associated with Methotrexate-Related Gastrointestinal Toxicity in Portuguese Rheumatoid Arthritis Patients. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.4711] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Lima A, Seabra V, Bernardes M, Azevedo A, Sousa H, Medeiros R. THU0457 Tyms Polymorphisms and Methotrexate Therapeutic Outcome in Rheumatoid Arthritis Portuguese Patients: Analysis of Key Polymorphisms. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.4672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Pietranera L, Brocca ME, Roig P, Lima A, Garcia-Segura LM, De Nicola AF. 17α-Oestradiol-induced neuroprotection in the brain of spontaneously hypertensive rats. J Neuroendocrinol 2014; 26:310-20. [PMID: 24730417 DOI: 10.1111/jne.12151] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 02/20/2014] [Accepted: 03/16/2014] [Indexed: 11/27/2022]
Abstract
17β-oestradiol is a powerful neuroprotective factor for the brain abnormalities of spontaneously hypertensive rats (SHR). 17α-Oestradiol, a nonfeminising isomer showing low affinity for oestrogen receptors, is also endowed with neuroprotective effects in vivo and in vitro. We therefore investigated whether treatment with 17α-oestradiol prevented pathological changes of the hippocampus and hypothalamus of SHR. We used 20-week-old male SHR with a blood pressure of approximately 170 mmHg receiving s.c. a single 800 μg pellet of 17α-oestradiol dissolved in cholesterol or vehicle only for 2 weeks Normotensive Wistar-Kyoto (WKY) rats were used as controls. 17α-Oestradiol did not modify blood pressure, serum prolactin, 17β-oestradiol levels or the weight of the testis and pituitary of SHR. In the brain, we analysed steroid effects on hippocampus Ki67+ proliferating cells, doublecortin (DCX) positive neuroblasts, glial fibrillary acidic protein (GFAP)+ astrocyte density, aromatase immunostaining and brain-derived neurotrophic factor (BDNF) mRNA. In the hypothalamus, we determined arginine vasopressin (AVP) mRNA. Treatment of SHR with 17α-oestradiol enhanced the number of Ki67+ in the subgranular zone and DCX+ cells in the inner granule cell layer of the dentate gyrus, increased BDNF mRNA in the CA1 region and gyrus dentatus, decreased GFAP+ astrogliosis in the CA1 subfield, and decreased hypothalamic AVP mRNA. Aromatase expression was unmodified. By contrast to SHR, normotensive WKY rats were unresponsive to 17α-oestradiol. These data indicate a role for 17α-oestradiol as a protective factor for the treatment of hypertensive encephalopathy. Furthermore, 17α-oestradiol is weakly oestrogenic in the periphery and can be used in males.
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Lopes V, Oliveira Junior S, Cezar M, Damatto R, Bonomo C, Pagan L, Lima A, Gomes M, Zornoff L, Okoshi K, Okoshi M, Martinez P. Influence of late
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‐acetylcysteine administration on cardiac remodeling in long‐term follow‐up postinfarction rats (862.3). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.862.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Sato K, Oliveira A, Lima A. (565) Effectiveness of Dry Needling reduction myofascial trigger point pain in the trapezius muscle. THE JOURNAL OF PAIN 2014. [DOI: 10.1016/j.jpain.2014.01.478] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Lima A, Bernardes M, Monteiro J, Azevedo R, Costa L, Ventura F, Seabra V, Medeiros R. AB0163 The influence of clinical and genetic variables on methotrexate effectiveness in portuguese rheumatoid arthritis patients. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2013-eular.2486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Rovere RK, Lima A. Wage -specific assessment of mammography screening in Brazilian women. KLINICKA ONKOLOGIE : CASOPIS CESKE A SLOVENSKE ONKOLOGICKE SPOLECNOSTI 2014; 27:108-110. [PMID: 24739047 DOI: 10.14735/amko2014108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE Mammography is an inexpensive examination that has become a standard screening method thanks to its cost-effectiveness. Due to an enormous cost escalation of cancer treatment over the last years, the assessment of this method, especially in the settings of an emerging country, is a matter of serious concern. METHODS A search within the national health database was conducted registering the data with nation- wide coverage. Data collection and analysis was commenced in 2010 with referrence to the year 2008 as the most recently updated period. The obtained information on mammography screening among Brazilian women was evaluated by subdividing the data in four groups according to socioeconomic status of the subjects. The study population was estimated to comprise about 2 million individuals. RESULTS More than 45% of Brazilian women older than 40 years of age have never undergone a mammography. The figures correlated with the income level, reaching an astonishing number of 62.2% in a group of patients with the lowest income level. CONCLUSION Mammography has proved effective in early detection of breast cancer in women. This study suggests that the lack of compliance in breast cancer screening in Brazil, pronounced especially in low- income families, may contribute to the increasing mortality rates associated with the disease.
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De Domenico M, Lima A, Mougel P, Musolesi M. The anatomy of a scientific rumor. Sci Rep 2013; 3:2980. [PMID: 24135961 PMCID: PMC3798885 DOI: 10.1038/srep02980] [Citation(s) in RCA: 171] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Accepted: 09/20/2013] [Indexed: 11/19/2022] Open
Abstract
The announcement of the discovery of a Higgs boson-like particle at CERN will be remembered as one of the milestones of the scientific endeavor of the 21(st) century. In this paper we present a study of information spreading processes on Twitter before, during and after the announcement of the discovery of a new particle with the features of the elusive Higgs boson on 4(th) July 2012. We report evidence for non-trivial spatio-temporal patterns in user activities at individual and global level, such as tweeting, re-tweeting and replying to existing tweets. We provide a possible explanation for the observed time-varying dynamics of user activities during the spreading of this scientific "rumor". We model the information spreading in the corresponding network of individuals who posted a tweet related to the Higgs boson discovery. Finally, we show that we are able to reproduce the global behavior of about 500,000 individuals with remarkable accuracy.
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Lima A, Reis F, Costa T. Cysteine Peptidase Inhibitors in Trypanosomatid Parasites. Curr Med Chem 2013; 20:3152-73. [DOI: 10.2174/0929867311320250009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Accepted: 02/18/2013] [Indexed: 11/22/2022]
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Lima A, Bernardes M, Monteiro J, Azevedo R, Costa L, Ventura F, Seabra V, Medeiros R. THU0126 The Influence of Clinical and Genetic Variables on Methotrexate-Related Toxicity in Portuguese Rheumatoid Arthritis Patients. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Meyer M, Gonzalez Deniselle MC, Gargiulo-Monachelli G, Lima A, Roig P, Guennoun R, Schumacher M, De Nicola AF. Progesterone attenuates several hippocampal abnormalities of the Wobbler mouse. J Neuroendocrinol 2013; 25:235-43. [PMID: 23157231 DOI: 10.1111/jne.12004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 09/03/2012] [Accepted: 11/10/2012] [Indexed: 12/13/2022]
Abstract
It is now recognised that progesterone plays a protective role for diseases of the central nervous system. In the Wobbler mouse, a model of motoneurone degeneration, progesterone treatment prevents spinal cord neuropathology and clinical progression of the disease. However, neuropathological and functional abnormalities have also been discovered in the brain of Wobbler mice and patients with amyotrophic lateral sclerosis. The present study examined the hippocampus of control and afflicted Wobbler mice and the changes in response to progesterone treatment. Mice received either a single progesterone implant (20 mg for 18 days). We found that the hippocampal pathology of the untreated Wobblers involved a decreased expression of brain-derived neurotrophic factor (BDNF) mRNA, decreased astrogliosis in the stratum lucidum, stratum radiatum and stratum lacunosum-moleculare, decreased doublecortin (DCX)-positive neuroblasts in the subgranular zone of the dentate gyrus and a decreased density of GABA immunoreactive hippocampal interneurones and granule cells of the dentate gyrus. Although progesterone did not change the normal parameters of control mice, it attenuated several hippocampal abnormalities in Wobblers. Thus, progesterone increased hippocampal BDNF mRNA expression, decreased glial fibrillary acidic protein-positive astrocytes and increased the number of GABAergic interneurones and granule cells. The number of DCX expressing neuroblasts and immature neurones remained impaired in both progesterone-treated and untreated Wobblers. In conclusion, progesterone treatment exerted beneficial effects on some aspects of hippocampal neuropathology, suggesting its neuroprotective role in the brain, in agreement with previous data obtained in the spinal cord of Wobbler mice.
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Pietranera L, Brocca ME, Cymeryng C, Gomez-Sanchez E, Gomez-Sanchez CE, Roig P, Lima A, De Nicola AF. Increased expression of the mineralocorticoid receptor in the brain of spontaneously hypertensive rats. J Neuroendocrinol 2012; 24:1249-58. [PMID: 22564091 DOI: 10.1111/j.1365-2826.2012.02332.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The mineralocorticoid receptor (MR) has been considered as both neuroprotective and damaging to the function of the central nervous system. MR may be also involved in central regulation of blood pressure. In the present study, we compared the expression of MR and the glucocorticoid receptor (GR) in the hippocampus and hypothalamus of 16-week-old spontaneously hypertensive rats (SHR) and normotensive control Wistar Kyoto (WKY) rats. In the hippocampus, MR expression was studied by in situ hybridization (ISH), quantitative polymerase chain reaction (PCR) and immunohistochemistry, whereas GR expression was analysed using the latter two procedures. Hypertensive animals showed an increased expression of MR mRNA in the whole hippocampus according to qPCR data and also in CA3 by ISH. Immunocytochemical staining for MR of the dorsal hippocampus, however, did not reveal differences between SHR and WKY rats. SHR showed elevated hypothalamic MR mRNA by qPCR, as well as an increased number of MR immunopositive cells in the magnocellular paraventricular region, compared to WKY rats. By contrast, expression levels of GR mRNA or protein in the hippocampus and hypothalamus of SHR were similar to those of WKY rats. Furthermore, we investigated the role of MR in the hypertensive rats by i.c.v. injection of the MR antagonist RU-2831. This compound produced a significant drop in blood pressure for SHR. In conclusion, MR expression is increased in the hippocampus and hypothalamus of SHR. We suggest that pathological MR overdrive may take responsibility for up-regulation of blood pressure and the encephalopathy of hypertension.
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Monaco E, Bionaz M, Lima A, Hurley WL, Wheeler MB. 213 TRANSCRIPTOMIC COMPARISON BETWEEN PORCINE ADIPOSE AND BONE MARROW MESENCHYMAL STEM CELLS DURING IN VITRO OSTEOGENIC AND ADIPOGENIC DIFFERENTIATION. Reprod Fertil Dev 2012. [DOI: 10.1071/rdv24n1ab213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Previous data support the use of adipose-derived stem cells (ASC) as an alternative to bone marrow as a source of adult stem cells for therapeutic purposes. The aims of the present study were to directly compare the transcriptome of ASC and bone marrow-derived mesenchymal stem cells (BMSC) in order to uncover potential functional differences between the two mesenchymal stem cells (MSC), to identify differentially expressed genes (DEG) and related functions that may drive MSC to become bone or adipose and to identify potential markers for adipogenic and osteogenic differentiation. ASC and BMSC, isolated from subcutaneous adipose tissue and femurs of 3 adult pigs were differentiated in vitro along the osteogenic and adipogenic lineage for up to 4 wk. At 0, 2, 7 and 21 days of differentiation, RNA was extracted for microarray analysis. Data were normalized by Lowess and statistical analysis run using ANOVA with Benjamini-Hochberg false discovery rate (FDR) correction. Data mining was carried out using Ingenuity Pathway Analysis and DAVID. Analysis of undifferentiated MSC for genes with the highest expression and DEG between MSC and fully differentiated tissues uncovered MSC being featured by low immunity and high angiogenic capacity. The direct comparison between differentiation lineages indicated that the expression of a limited number of genes has to change in order to determine cell fate. Functional analysis of the DEG between differentiation lineages indicated that osteogenesis is characterised by larger cell proliferation and cytoskeleton organisation with a crucial role of G-proteins compared to adipogenesis. On the other hand, adipogenesis is driven by PPAR signalling, has greater angiogenesis, lipid metabolism, migration and tumorigenesis capacity compared to osteogenesis. The direct comparison between ASC and BMSC during the same differentiation uncovered that ASC is featured by a greater lipid metabolism compared to BMSC, while BMSC has a more pronounced cell growth and proliferation than ASC. In addition, we uncovered 39 specific gene markers for adipogenesis and 65 for osteogenesis. NAD(P)H dehydrogenase quinone 1 (NQO1), aquaporin 3 (AQP3), stearoyl-CoA desaturase (SCD), fatty acid binding protein 3 and 5 (FABP3 and FABP5) and ferritin light polypeptide (FTL) were among the best adipogenic markers. Hemopexin (HPX), collagenase type 3α (COL3A1), annexin A8-like 1 (ANXA8L1), flotillin 2 (FLOT2) and periostin or osteoblast specific factor (POSTN) were among the best osteogenic markers. Overall, the data indicated that the transcriptome of the two MSC are similar across the conditions studied. In addition, despite the limited DEG between the two MSC, the enrichment of several functions/pathways might indicate differences in therapeutic application.
This work was support by the Illinois Regenerative Medicine Institute (IDPH # 63080017).
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