Author: Alberto Barrera Pacheco

Protein analysis reveals differential accumulation of late embryogenesis abundant and storage proteins in seeds of wild and cultivated amaranth species

ESAU BOJORQUEZ VELAZQUEZ Alberto Barrera Pacheco Eduardo Espitia Rangel Alfredo Herrera_Estrella Ana Paulina Barba de la Rosa (2019)

"Background Amaranth is a plant naturally resistant to various types of stresses that produces seeds of excellent nutritional quality, so amaranth is a promising system for food production. Amaranth wild relatives have survived climate changes and grow under harsh conditions, however no studies about morphological and molecular characteristics of their seeds are known. Therefore, we carried out a detailed morphological and molecular characterization of wild species A. powellii and A. hybridus, and compared them with the cultivated amaranth species A. hypochondriacus (waxy and non-waxy seeds) and A. cruentus. Results Seed proteins were fractionated according to their polarity properties and were analysed in one-dimensional gel electrophoresis (1-DE) followed by nano-liquid chromatography coupled to tandem mass spectrometry (nLC-MS/MS). A total of 34 differentially accumulated protein bands were detected and 105 proteins were successfully identified. Late embryogenesis abundant proteins were detected as species-specific. Oleosins and oil bodies associated proteins were observed preferentially in A. cruentus. Different isoforms of the granule-bound starch synthase I, and several paralogs of 7S and 11S globulins were also identified. The in silico structural analysis from different isoforms of 11S globulins was carried out, including new types of 11S globulin not reported so far. Conclusions The results provide novel information about 11S globulins and proteins related in seed protection, which could play important roles in the nutritional value and adaptive tolerance to stress in amaranth species."

Article

Amaranth species Late embryogenesis abundant proteins Proteomics Seed storage proteins 11S globulins BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA MOLECULAR BIOLOGÍA MOLECULAR

Amaranth supplementation prevents the increase in activity of dipeptidyl peptidase IV in plasma of streptozotocin-induced diabetic rats

AIDA JIMENA VELARDE SALCEDO EVELYN REGALADO RENTERIA BERTHA IRENE JUAREZ FLORES ALBERTO BARRERA PACHECO ANA PAULINA BARBA DE LA ROSA (2017)

"Scope: Amaranth grain is a source of several bioactive compounds such as cancer-preventive and ACE inhibitory peptides. In vitro analysis of amaranth proteins has also demonstrated the presence of bioactive peptides, which exert inhibitory activity upon dipeptidyl peptidase IV (DPPIV), a new target for type 2 diabetes, but this potential activity has not been tested in vivo. The aim of this work was to evaluate whether chronic amaranth consumption has a beneficial effect in streptozotocin-induced diabetic rats, particularly in DPPIV activity and changes in plasma proteome profile. Methods and results: Diabetic rats were fed with 20% popped amaranth grain diet for 12 weeks. Changes in lipid profile, DPPIV activity in plasma and kidney, as well changes in plasma proteome were evaluated. Total cholesterol and DPPIV activity in plasma were increased in diabetic rats but this was ameliorated by amaranth consumption. Diabetic rats fed with amaranth showed the highest levels of HDL and this correlated with an accumulation of apolipoprotein (apo) A-II. Furthermore, amaranth diet stimulated the up-accumulation of the antioxidant protein paraoxonase 1(PON1). Conclusion This study provides molecular evidence about the role of amaranth as a potential functional food with DPPIV inhibitory activity and with a positive effect in plasma lipoproteins."

Article

Amaranth Bioactive peptides Diabetes Dipeptidyl peptidase IV Plasma proteomics BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA GENÉTICA

Low temperature conditioning of garlic (Allium sativum L.) "seed" cloves induces alterations in sprouts proteome

MIGUEL DAVID DUFOO HURTADO JOSE ANGEL HUERTA OCAMPO ALBERTO BARRERA PACHECO ANA PAULINA BARBA DE LA ROSA EDMUNDO MATEO MERCADO SILVA (2015)

"Low-temperature conditioning of garlic "seed" cloves substitutes the initial climatic requirements of the crop and accelerates the cycle. We have reported that "seed" bulbs from "Coreano" variety conditioned at 5 degrees C for 5 weeks reduces growth and plant weight as well as the crop yields and increases the synthesis of phenolic compounds and anthocyanins. Therefore, this treatment suggests a cold stress. Plant acclimation to stress is associated with deep changes in proteome composition. Since proteins are directly involved in plant stress response, proteomics studies can significantly contribute to unravel the possible relationships between protein abundance and plant stress acclimation. The aim of this work was to study the changes in the protein profiles of garlic "seed" cloves subjected to conditioning at low-temperature using proteomics approach. Two sets of garlic bulbs were used, one set was stored at room temperature (23 degrees C), and the other was conditioned at low temperature (5 degrees C) for 5 weeks. Total soluble proteins were extracted from sprouts of cloves and separated by two-dimensional gel electrophoresis. Protein spots showing statistically significant changes in abundance were analyzed by LC-ESI-MS/MS and identified by database search analysis using the Mascot search engine. The results revealed that low-temperature conditioning of garlic "seed" cloves causes alterations in the accumulation of proteins involved in different physiological processes such as cellular growth, antioxidative/oxidative state, macromolecules transport, protein folding and transcription regulation process. The metabolic pathways affected include protein biosynthesis and quality control system, photosynthesis, photorespiration, energy production, and carbohydrate and nucleotide metabolism. These processes can work cooperatively to establish a new cellular homeostasis that might be related with the physiological and biochemical changes observed in previous studies."

Article

Allium sativum Sprouts Cold conditioning Two-dimensional electrophoresis LC-ESI-MS/MS BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA

Proteomic analysis of non-toxic Jatropha curcas byproduct cake: fractionation and identification of the major components

ANDRES LEON VILLANUEVA JOSE ANGEL HUERTA OCAMPO ALBERTO BARRERA PACHECO SERGIO MEDINA GODOY ANA PAULINA BARBA DE LA ROSA (2018)

"Jatropha curcas non-toxic genotypes have been reported in Mexico and the press-cake, after oil extraction, represents a potential of new source of protein for food and feed uses. However, the characterization of the press-cake proteins is still unknown. The aim of this work was to carry out the molecular characterization of J. curcas seed storage proteins. Proteins in press-cake were pre-fractionated according to the classical Osborne procedure. Main protein fraction in J. curcas cake was represented by glutelins, the electrophoretic analysis showed that glutelins and globulins have the same profile, indicating that oil extraction process could have effect on globulins agglomeration. Protein fractions were analyzed by two-dimensional gel electrophoresis and mass spectrometry, results provide a new dataset of protein species or proteoforms that are accumulated in J. curcas endosperm. The identification of toxic proteins such as curcin in the non-toxic variety could represent that this protein have important roles in seeds. Regulatory proteins such as proteasome subunits and 14-3-3 were identified. A group of different heat shock and stress defense protein species was detected. Proteases related with inhibitory activity against DPPIV were also detected; this could support the potential use of J. curcas cake as nutraceutical food."

Article

Jatropha curcas LC–MS/MS Mass spectrometry Non-toxic Proteome Seed storage proteins BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA MOLECULAR BIOLOGÍA MOLECULAR

Amaranth protein improves lipid profile and insulin resistance in a diet-induced obese mice model

ABRAHAM ESCOBEDO MORATILLA AIDA JIMENA VELARDE SALCEDO CYNTHIA VICTORIA MAGAÑA HERNANDEZ ALBERTO BARRERA PACHECO EDUARDO ESPITIA RANGEL ANA PAULINA BARBA DE LA ROSA (2017)

"Amaranth has been claimed as functional food, but its function on obesity-related disorder is not fully known. The aim of this study was to analyse the effect of amaranth protein intake on blood lipids profile and insulin resistance in diet-induced obese mice. The effect of soybean protein was also analysed for comparative purposes. C57BL-6 mice were fed for eight weeks with regular or high fat diet. Amaranth or soybean protein isolates (10 mg/kg) were supplied via oral administration. Changes in body weight, adipose tissue, total cholesterol, triglycerides, insulin, a glucose tolerance test, as well as the expression of lipid metabolism-related genes were measured. Our results have shown that amaranth protein induces a decrease in plasma insulin in mice fed with a regular diet, whereas a decrease in triglycerides was observed in mice fed with high fat diet. Furthermore, down-regulation of Tnf-α and Res, suggested the inhibition of inflammation state. The present study demonstrates that amaranth protein, but not soybean protein, improves the obese mice health, and the hormonal modulation (Lep, Fasn, Lpl) could lead to new mechanism of action by which amaranth consumption exerts its beneficial health effect."

Article

Amaranth Cytokines Insulin resistance Obesity Protein isolate Soybean BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA MOLECULAR

2D-DIGE as a strategy to identify serum biomarkers in Mexican patients with Type-2 diabetes with different body mass index

ERIK ELVIN GOMEZ CARDONA ERIC EDMUNDO HERNANDEZ DOMINGUEZ AIDA JIMENA VELARDE SALCEDO ALBERTO BARRERA PACHECO ANTONIO DE LEON RODRIGUEZ ANA PAULINA BARBA DE LA ROSA (2017)

"Obesity and type 2 diabetes (T2D) are the most prevalent and serious metabolic diseases affecting people worldwide. However racial and ethnic disparities seems to be a risk factor for their development. Mexico has been named as one of the largest populations with the highest prevalence of diabetes and obesity. The aim of this study was to identify novel T2D-associated proteins in Mexican patients. Blood samples were collected from 62 Mexican patients with T2D and they were grouped according to their body mass index (BMI). A panel of 10 diabetes and obesity serum markers was determined using MAGPIX. A comparative proteomics study was performed using two-dimensional difference in-gel electrophoresis (2D-DIGE) followed by mass spectrometry (LC-MS/MS). We detected 113 spots differentially accumulated, in which 64 unique proteins were identified, proteins that were involved in metabolism pathways, molecular transport, and cellular signalling. Four proteins (14-3-3, ApoH, ZAG, and OTO3) showing diabetes-related variation and also changes in relation to obesity were selected for further validation by western blotting. Our results reveal new diabetes related proteins present in the Mexican population. These could provide additional insight into the understanding of diabetes development in Mexican population and may also be useful candidate biomarkers."

Article

Predictive markers Protein–protein interaction networks INGENIERÍA Y TECNOLOGÍA CIENCIAS TECNOLÓGICAS

Identification of calcium stress induced genes in amaranth leaves through suppression subtractive hybridization

HUGO SERGIO AGUILAR HERNANDEZ MARTHA LETICIA SANTOS MARTINEZ MA. FABIOLA LEON GALVAN ALBERTO BARRERA PACHECO EDUARDO ESPITIA RANGEL ANTONIO DE LEON RODRIGUEZ RAMON GERARDO GUEVARA GONZALEZ ANA PAULINA BARBA DE LA ROSA (2011)

"Calcium (Ca2+) is a critical ion for the growth and development of plants and plays an important role in signal transduction pathways in response to biotic and abiotic stresses. We investigated the Ca2+ stress responsive-genes in amaranth leaves by using the suppression subtractive hybridization technique. Screening of the libraries generated 420 up-regulated transcripts and 199 down-regulated transcripts. The differentially expressed transcripts were associated with general stress response, transcription factors, gene regulation, signal transduction, and some other with unknown function. Selected genes were used to study their differential regulation by sqRT-PCR. Among the up-regulated transcripts, a fragment containing the motif of C3HC4-type RING-Zinc family was further characterized. The ORF of amaranth zinc finger protein (AhZnf) has a closer relationship with its ortholog from Ricinus communis while is distantly related to the Arabidopsis thaliana C3HC4-type ortholog. We have identified a novel putative zinc finger protein along with other novel proteins such as the wall associated kinase, phosphoinositide binding protein, and rhomboid protease involved in response to Ca2+ stress in amaranth leaves."

Article

Amaranthus hypochondriacus Calcium stress Subtractive cDNA libraries Zinc finger protein BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA VEGETAL (BOTÁNICA)

The proteome map of the escamolera ant (Liometopum apiculatum Mayr) larvae reveals immunogenic proteins and several hexamerin proteoforms

José Ángel Huerta Ocampo María Soledad García Muñoz AIDA JIMENA VELARDE SALCEDO Eric Edmundo Hernández Domínguez JORGE LUIS GONZALEZ ESCOBAR Alberto Barrera Pacheco ALICIA GRAJALES LAGUNES Ana Paulina Barba de la Rosa (2018)

"The larvae of escamolera ant (Liometopum apiculatum Mayr) have been considered a delicacy since Pre-Hispanic times. The increased demand for this stew has led to massive collection of ant nests. Yet biological aspects of L. apiculatum larvae remain unknown, and mapping the proteome of this species is important for understanding its biological characteristics. Two-dimensional gel electrophoresis (2-DE) followed by liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis was used to characterize the larvae proteome profile. From 380 protein spots analyzed, 174 were identified by LC-MS/MS and homology search against the Hymenoptera subset of the NCBInr protein database using the Mascot search engine. Peptide de novo sequencing and homology-based alignment allowed the identification of 36 additional protein spots. Identified proteins were classified by cellular location, molecular function, and biological process according to the Gene Ontology annotation. Immunity- and defense-related proteins were identified including PPIases, FK506, PEBP, and chitinases. Several hexamerin proteoforms were identified and the cDNA of the most abundant protein detected in the 2-DE map was isolated and characterized. L. apiculatum hexamerin (LaHEX, GeneBank accession no. MH256667) contains an open reading frame of 2199?bp encoding a polypeptide of 733 amino acid residues with a calculated molecular mass of 82.41?kDa. LaHEX protein is more similar to HEX110 than HEX70 from Apis mellifera. Down-regulation of LaHEX was observed throughout ant development. This work represents the first proteome map as well as the first hexamerin characterized from L. apiculatum larvae."

Article

Escamoles Peptide de novo sequencing Gene ontology LC-MS/MS qRT-PCR Two-dimensional gel electrophoresis BIOLOGÍA Y QUÍMICA CIENCIAS DE LA VIDA BIOLOGÍA MOLECULAR BIOLOGÍA MOLECULAR