0000000000268242

AUTHOR

Javier Caballero

showing 4 related works from this author

Domain shuffling between Vip3Aa and Vip3Ca: chimera stability and insecticidal activity against European, American, African, and Asian pests

2020

The bacterium Bacillus thuringiensis produces insecticidal Vip3 proteins during the vegetative growth phase with activity against several lepidopteran pests. To date, three different Vip3 protein families have been identified based on sequence identity: Vip3A, Vip3B, and Vip3C. In this study, we report the construction of chimeras by exchanging domains between Vip3Aa and Vip3Ca, two proteins with marked specificity differences against lepidopteran pests. We found that some domain combinations made proteins insoluble or prone to degradation by trypsin as most abundant insect gut protease. The soluble and trypsin-stable chimeras, along with the parental proteins Vip3Aa and Vip3Ca, were tested…

InsecticidesAsiaInsectaHealth Toxicology and Mutagenesismedicine.medical_treatmentBacillus thuringiensislcsh:MedicineSpodopteraToxicologyArticleLethal Dose 5003 medical and health sciencesHelicoverpa armigeraBacterial ProteinsProtein DomainsBacillus thuringiensismedicineAnimalsSpodoptera littoralisPest Control Biological030304 developmental biologychemistry.chemical_classification0303 health sciencesProteasebiology030306 microbiologyProtein Stabilitylcsh:RfungiSpodoptera spp.Ostrinia furnacalisSouth Americabiology.organism_classificationFusion proteinAnticarsia gemmatalisAmino acidEuropeAnticarsia gemmatalisspodoptera spp. helicoverpa armigeraBiochemistrychemistryAfricaNorth AmericaMamestra brassicaeOstrinia furnacalis
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Prognostic Nutritional Index as an independent prognostic factor in locoregionally advanced squamous cell head and neck cancer.

2018

Background: Locally advanced head and neck squamous cell carcinoma (LAHNSCC) is a heterogeneous disease in which better predictive and prognostic factors are needed. Apart from TNM stage, both systemic inflammation and poor nutritional status have a negative impact on survival. Methods: We retrospectively analysed two independent cohorts of a total of 145 patients with LAHNSCC treated with induction chemotherapy followed by concurrent chemoradiotherapy at two different academic institutions. Full clinical data, including the Prognostic Nutritional Index (PNI), neutrophil to lymphocyte ratio and derived neutrophil to lymphocyte ratio, were analysed in a training cohort of 50 patients. Receiv…

0301 basic medicineOncologyCancer Researchmedicine.medical_specialtyMultivariate analysisDerived neutrophil-to-lymphocyte ratio; Head and neck squamous cell carcinoma; Inflammation-based prognostic scores; Neutrophil-to-lymphocyte ratio; Overall survival; Prognostic factors; Prognostic nutritional indexoverall survivalhead and neck squamous cell carcinomaderived neutrophil-to-lymphocyte ratio03 medical and health sciences0302 clinical medicineneutrophil-to-lymphocyte ratioInternal medicinemedicine1506Stage (cooking)Neutrophil to lymphocyte ratioOriginal ResearchUnivariate analysisbusiness.industryHead and neck cancerInduction chemotherapyprognostic factorsprognostic nutritional indexmedicine.diseaseHead and neck squamous-cell carcinomaClinical trial030104 developmental biologyOncology030220 oncology & carcinogenesisinflammation-based prognostic scoresbusinessESMO open
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Prognostic nutritional index (PNI) is an independent prognostic factor in locoregionally advanced squamous cell head and neck cancer (LAHNSCC)

2017

Oncologymedicine.medical_specialtyPrognostic factorIndex (economics)business.industryHead and neck cancerCellHematologymedicine.diseaseHead and neck squamous-cell carcinomamedicine.anatomical_structureOncologyInternal medicinemedicinebusinessPrognostic Nutritional Index (PNI)
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Unraveling the Composition of Insecticidal Crystal Proteins in Bacillus thuringiensis: a Proteomics Approach.

2020

ABSTRACT Bacillus thuringiensis (Bt) is the most widely used active ingredient for biological insecticides. The composition of δ-endotoxins (Cry and Cyt proteins) in the parasporal crystal determines the toxicity profile of each Bt strain. However, a reliable method for their identification and quantification has not been available, due to the high sequence identity of the genes that encode the δ-endotoxins and the toxins themselves. Here, we have developed an accurate and reproducible mass spectrometry-based method (liquid chromatography-tandem mass spectrometry-multiple reaction monitoring [LC-MS/MS-MRM]) using isotopically labeled proteotypic peptides for each protein in a particular mix…

ProteomicsInsecticidesProteomeQuantitative proteomicsBacillus thuringiensisProteomics01 natural sciencesApplied Microbiology and Biotechnology03 medical and health sciencesBiosafetyHemolysin ProteinsBacterial ProteinsTandem Mass SpectrometryBacillus thuringiensisInvertebrate Microbiology030304 developmental biologyPhytosanitary certificationActive ingredient0303 health sciencesChromatographyEcologybiologyBacillus thuringiensis ToxinsChemistry010401 analytical chemistrybiology.organism_classification0104 chemical sciencesEndotoxinsComposition (visual arts)FermentationFood ScienceBiotechnologyChromatography LiquidApplied and environmental microbiology
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