1
|
Gao F, Ieritano C, Chen KT, Dias GM, Rousseau J, Bénard F, Seimbille Y. Two bifunctional desferrioxamine chelators for bioorthogonal labeling of biovectors with zirconium-89. Org Biomol Chem 2019; 16:5102-5106. [PMID: 29974105 DOI: 10.1039/c8ob01434e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We report two bifunctional chelators, DFO-Cys and DFO-CBT, to label biovectors with zirconium-89 according to the 2-cyanobenzothiazole/1,2-aminothiol cycloaddition. Their features are high labeling yields, rapid and efficient bioconjugation, metabolically stable luciferin-based end products, and applicability to orthogonal two-step labeling of sensitive biomolecules.
Collapse
Affiliation(s)
- F Gao
- TRIUMF, Life Sciences Division, 4004 Westbrook Mall, Vancouver, V6T 2A3, BC, Canada.
| | | | | | | | | | | | | |
Collapse
|
2
|
Kasai-Brunswick TH, Silva Dos Santos D, Ferreira RP, Araujo DS, Dias GM, Coutinho JLA, Cruz FESF, Sternick EB, Gubert F, Oliveira JCG, Vaz IM, Borgonovo T, Brofman PRS, Moura-Neto RS, Silva R, Campos-de-Carvalho AC, Carvalho AB. Generation of patient-specific induced pluripotent stem cell lines from one patient with Jervell and Lange-Nielsen syndrome, one with type 1 long QT syndrome and two healthy relatives. Stem Cell Res 2018; 31:174-180. [PMID: 30099333 DOI: 10.1016/j.scr.2018.07.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 06/15/2018] [Accepted: 07/13/2018] [Indexed: 02/08/2023] Open
Abstract
Four human iPSC cell lines (one Jervell and Lange-Nielsen Syndrome, one Long QT Syndrome-type 1 and two healthy controls) were generated from peripheral blood obtained from donors belonging to the same family. CytoTune™-iPS 2.0 Sendai Reprogramming Kit (containing OCT3/4, KLF4, SOX2 and cMYC as reprogramming factors) was used to generate all cell lines. The four iPSCs have normal karyotype, express pluripotency markers as determined by RT-PCR and flow cytometry and differentiated spontaneously in vitro into cells of the three germ layers, confirming their pluripotent capacity.
Collapse
Affiliation(s)
- T H Kasai-Brunswick
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Centro Nacional de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
| | - D Silva Dos Santos
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - R P Ferreira
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - D S Araujo
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - G M Dias
- Instituto Nacional de Cardiologia, Rio de Janeiro, RJ, Brazil
| | - J L A Coutinho
- Instituto Nacional de Cardiologia, Rio de Janeiro, RJ, Brazil
| | - F E S F Cruz
- Instituto Nacional de Cardiologia, Rio de Janeiro, RJ, Brazil
| | - E B Sternick
- Faculdade de Ciências Médicas de Minas Gerais, Belo Horizonte, MG, Brazil
| | - F Gubert
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - J C G Oliveira
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - I M Vaz
- Pontifícia Universidade Católica do Paraná, Curitiba, PR, Brazil
| | - T Borgonovo
- Pontifícia Universidade Católica do Paraná, Curitiba, PR, Brazil
| | - P R S Brofman
- Pontifícia Universidade Católica do Paraná, Curitiba, PR, Brazil
| | - R S Moura-Neto
- Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - R Silva
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - A C Campos-de-Carvalho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Centro Nacional de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Instituto Nacional de Ciência e Tecnologia em Medicina Regenerativa, Rio de Janeiro, RJ, Brazil
| | - A B Carvalho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Centro Nacional de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Instituto Nacional de Ciência e Tecnologia em Medicina Regenerativa, Rio de Janeiro, RJ, Brazil
| |
Collapse
|
3
|
Dias GM, López ML, Ferreira ATS, Chapeaurouge DA, Rodrigues A, Perales J, Retamal CA. Thiol-disulfide proteins of stallion epididymal spermatozoa. Anim Reprod Sci 2013; 145:29-39. [PMID: 24418125 DOI: 10.1016/j.anireprosci.2013.12.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 12/14/2013] [Accepted: 12/17/2013] [Indexed: 10/25/2022]
Abstract
Thiol groups of cysteine residues represent redox centers involved in multiple biological functions. It has been postulated that changes in the redox status of mammalian epididymal spermatozoa contribute to the sperm maturation process. The present work shows the thiol-disulfide protein profile of stallion epididymal spermatozoa achieved by two-dimension electrophoresis and MALDI-TOF/TOF mass spectrometry of proteins labeled with a thiol-reactive fluorescent tag, monobromobimane. Our results have shown the formation of disulfide bonds in several sperm protein fractions during the epididymal maturation process. The majority of the oxidized thiol sperm proteins identified correspond to structural molecules of the flagellum (as the outer dense fiber-1 protein - ODF1), followed by glycolytic enzymes (as glyceraldehyde-3-phosphate dehydrogenase spermatogenic), antioxidant protectors (as glutathione S-transferase and phospholipid hydroperoxide glutathione peroxidase - PHGPx). The magnitude of the thiol oxidation differs between proteins, and was more drastic in polypeptides with molecular weights of up to 33kDa, identified as ODF1 and PHGPx. A kinase anchor protein, a voltage-dependent anion channel protein and a zona pellucida-binding protein were also found in the polypeptide samples that contained oxidized SH groups. These proteins may be modified or controlled by the mechanisms involved in the cysteine-redox changes, corroborating the belief that a correct degree of protein oxidation is required for the stabilization of sperm structure, protection against oxidative damage, induction of progressive sperm motility and fertilization.
Collapse
Affiliation(s)
- G M Dias
- Laboratório de Biologia Celular e Tecidual, Centro de Biociências e Biotecnologia, UENF, Campos dos Goytacazes, RJ, Brazil
| | - M L López
- Laboratório de Biologia Celular e Tecidual, Centro de Biociências e Biotecnologia, UENF, Campos dos Goytacazes, RJ, Brazil.
| | - A T S Ferreira
- Laboratório de Toxinologia, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - D A Chapeaurouge
- Laboratório de Toxinologia, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - A Rodrigues
- Laboratório de Biologia Celular e Tecidual, Centro de Biociências e Biotecnologia, UENF, Campos dos Goytacazes, RJ, Brazil
| | - J Perales
- Laboratório de Toxinologia, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - C A Retamal
- Laboratório de Biologia Celular e Tecidual, Centro de Biociências e Biotecnologia, UENF, Campos dos Goytacazes, RJ, Brazil
| |
Collapse
|
4
|
Dias GM, Retamal CA, Tobella L, Arnholdt ACV, López ML. Nuclear status of immature and mature stallion spermatozoa. Theriogenology 2006; 66:354-65. [PMID: 16423383 DOI: 10.1016/j.theriogenology.2005.10.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2005] [Accepted: 10/16/2005] [Indexed: 11/25/2022]
Abstract
'The highly packed chromatin of mature spermatozoa results from replacement of somatic-like histones by highly basic arginine- and cysteine-rich protamines during spermatogenesis, with additional conformational changes in chromatin structure during epididymal transit. The objective of the present study was to compare the nuclear characteristics of immature and mature epididymal stallion spermatozoa, using a variety of experimental approaches. Resistance to in vitro decondensation of chromatin, following exposure to SDS-DTT and alkaline thioglycolate, increased significantly in mature spermatozoa. Evaluation of the thiol-disulfide status (monobromobimane labeling) demonstrated that immature cells obtained from ductulli efferentes contained mostly thiol groups, whereas these groups were oxidized in mature cells collected from the cauda epididymidis. Based on atomic absorption spectrophotometry, maturation of stallion spermatozoa was accompanied by a 60% reduction in the Zn(2+) content of sperm cells, concomitant with increased concentrations of this ion in epididymal fluid. Furthermore, the degree of disulfide bonding was inversely correlated with susceptibility of chromatin to acid denaturation (SCSA). Collectively, these data were consistent with the hypothesis that maturation of stallion spermatozoa involves oxidation of sulphydryl groups to form intra- and intermolecular disulfide links between adjacent protamines, with loss of zinc as an integral feature. These changes endow mechanical and chemical resistance to the nucleus, ensuring efficient transmission of the paternal genome at fertilization.
Collapse
Affiliation(s)
- G M Dias
- Centro de Biociências e Biotecnologia, LBCT, Setor Biologia da Reprodução, Universidade Estadual do Norte Fluminense, Av. Alberto Lamêgo 2000, Horto, Campos dos Goytacazes CEP: 28013600, RJ, Brazil
| | | | | | | | | |
Collapse
|
5
|
Edwards GC, Rasmussen PE, Schroeder WH, Kemp RJ, Dias GM, Fitzgerald-Hubble CR, Wong EK, Halfpenny-Mitchell L, Gustin MS. Sources of variability in mercury flux measurements. ACTA ACUST UNITED AC 2001. [DOI: 10.1029/2000jd900496] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
6
|
Abstract
This paper reports on the field testing of a tunable diode laser trace gas analyzer system for micrometeorological monitoring of ammonia fluxes. This system uses infrared absorption spectroscopy to measure atmospheric ammonia concentrations and the fluxgradient method to relate the measured concentration gradient to a flux of ammonia. For the field tests, we monitored ammonia fuxes over three plots receiving different manure applications. Each plot was sampled for 15 or 30 min of each hour, producing a high-temporal resolution data set. Analysis of the system response showed that ammonia adsorption to the tubing walls was greatly reduced by the system design and did not interfere with the flux measurement.
Collapse
Affiliation(s)
- J S Warland
- Department of Land Resource Science, University of Guelph, Ontario, Canada.
| | | | | |
Collapse
|
7
|
Dias GM, Nogueira CE, Dani R. [Transparieto-hepatic cholangiography with the Chiba needle. Experience in 100 cases]. Arq Gastroenterol 1979; 16:183-92. [PMID: 550790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
One-hundred cases submitted to percutaneous transhepatic cholangiography (PTC) with Chiba's needle were studied. Success rate was 93%, with 100% success in patients with dilated ducts and 78.8% in those with normal ducts. One false-positive result was noticed due to air injection into bile duct in the beginning of the procedure. Complications were seen in 8 cases, without fatalities ascribed to the PTC itself, nor emergency laparotomy was necessary in these cases.
Collapse
|