@article {8516, title = {Transcription factors involved in plant resistance to pathogens.}, journal = {Curr Protein Pept Sci}, year = {2016}, month = {2016 Jun 19}, abstract = {

Phytopathogenic microorganisms have a significant influence on survival and productivity of several crop plants. Transcription factors (TFs) are important players in the response to biotic stresses, as insect attack and pathogen infection. In face of such adversities many TF families have been previously reported as differentially expressed in plants as a reaction to bacterial, fungal and viral infection. This review highlights recent progresses in understanding the structure, function, signal regulation and interaction of transcription factors with other proteins in response to pathogens. Hence, we focus on three families of transcription factors: ERF, bZIP and WRKY, due to their abundance, importance and the availability of functionally well-characterized members in response to pathogen attack. Their roles and the possibilities related to the use of this knowledge for engineering pathogen resistance in crop plants are also discussed.

}, issn = {1875-5550}, author = {Amorim, Lidiane L B and da Fonseca-Dos-Santos, Romulo and Guida-Santos, Mauro and Crovella, Sergio and Benko-Iseppon, Ana Maria} } @article {8521, title = {TRIM5 gene polymorphisms in HIV-1-infected patients and healthy controls from Northeastern Brazil.}, journal = {Immunol Res}, year = {2016}, month = {2016 Jul 8}, abstract = {

Humans show heterogeneity in vulnerability to HIV-1 infection, partially under control of genes involved in host immunity and virus replication. TRIM5α protein has restriction activity against replication of many retroviruses. Human TRIM5 gene single nucleotide polymorphisms have been reported as involved in susceptibility to HIV-1 infection. We recruited 213 HIV-1-positive patients and 234 healthy uninfected controls from Northeast Brazil; two non-synonymous variants at exon 2, rs3740996 (H43Y) and rs10838525 (R136Q), and one regulatory polymorphism (rs16934386) at 5{\textquoteright}UTR region of TRIM5 were analyzed. The R136Q variation presented significant differences between HIV-1-positive patients and healthy controls. The 136Q allele and the 136QQ genotype were more frequent in healthy controls (32.7 and 10.2~\%, respectively) than in HIV-1-positive patients (136Q allele: 24.4~\%; OR 0.66; CI 95~\% 0.49-0.90; p value~=~0.008/136QQ genotype: 4.2~\%; OR 0.33; CI 95~\% 0.13-0.79, p~=~0.008) also after adjusting for age and sex. We also stratified our findings according to the presence of CCR5Δ32 variation, but the results remained the same. We observed that rs10838525 (R136Q) and rs3740996 (H43Y) were in linkage disequilibrium (D{\textquoteright}~=~0.71), forming four possible haplotypes. The H43-136Q haplotype was significantly more frequent in healthy controls (28.2~\%) than in HIV-positive patients (21.4~\%; OR 0.69; CI 95~\% 0.50-0.96; p~=~0.022). An increased frequency of allele (136Q) and genotype (136QQ) of the non-synonymous rs10838525 (R136Q) variant and the haplotype (43H-136Q) was observed among healthy controls individuals. Being aware of the limitation of this study (unavailability of exposed but uninfected individuals), we hypothesize a potential role for TRIM5 variations in the protection against HIV-1 infection.

}, issn = {1559-0755}, doi = {10.1007/s12026-016-8810-1}, author = {Celerino da Silva, Ronaldo and Coelho, Ant{\^o}nio Victor Campos and Arraes, Luiz Claudio and Brand{\~a}o, Lucas Andr{\'e} Cavalcanti and Crovella, Sergio and Guimar{\~a}es, Rafael Lima} } @article {7709, title = {Tumor necrosis factor (TNF) alpha and interleukin (IL) 18 genes polymorphisms are correlated with susceptibility to HPV infection in patients with and without cervical intraepithelial lesion.}, journal = {Ann Hum Biol}, year = {2015}, month = {2015 Jun 16}, pages = {1-8}, abstract = {

BACKGROUND: The Human Papillomavirus (HPV) predisposes 500 000 women to cervical cancer. Host genetic background may facilitate virus persistence in the uterine cervix. Polymorphisms in regulatory and coding regions of cytokine genes have been associated with susceptibility to some human diseases.

AIM: This study aims at investigating whether TNFA -308 G/A and IL18 -137 G/C and -607 C/A polymorphisms are associated with susceptibility to HPV infection/progression to high-grade squamous intraepithelial lesion (HSIL).

SUBJECTS AND METHODS: One hundred and twenty-two HPV infected and 132 HPV negative women (the latter used as healthy controls) were analysed. TNFA -308 G/A and IL18 (-137G/C and -607 C/A) polymorphisms were analysed using specific sequence polymorphism PCR (SSP-PCR). Univariate statistical analysis and a logistic regression were performed.

RESULTS: The TNFA -308A allele was associated with susceptibility to HPV infection (p = 0.0008), while the IL18 -607A allele conferred protection against HPV infection (p = 0.0043). TNFA -308 G/A and IL18 (-137G/C and -607 C/A) polymorphisms were not associated with development of cervical lesions (p > 0.05). An association was also observed between smoking and susceptibility to the development of HSIL.

CONCLUSION: The findings suggest an association between two TNFA SNPs and susceptibility to HPV infection in women from Northeast Brazil. The results need to be functionally validated and replicated in other populations with different ethnic backgrounds.

}, issn = {1464-5033}, doi = {10.3109/03014460.2014.1001436}, author = {Tavares, Mayara C Mansur and de Lima J{\'u}nior, S{\'e}rgio F and Coelho, Antonio V C and Marques, Tr{\'\i}cia Ruschelle N M and de Ara{\'u}jo, Di{\^e}go Henrique T and Her{\'a}clio, Sandra de A and Amorim, Mel{\^a}nia M Ramos and de Souza, Paulo Roberto E and Crovella, Sergio} } @article {1939, title = {TRAIL administration down-modulated the acute systemic inflammatory response induced in a mouse model by muramyldipeptide or lipopolysaccharide.}, journal = {Cytokine}, volume = {60}, year = {2012}, month = {2012 Oct}, pages = {43-6}, abstract = {

The potent inducer of apoptosis TRAIL/Apo2 ligand is now under considerations in clinical trials for the treatment of different types of cancer. Since the natural history of cancer is often characterized by microbial infections, we have investigated the effect of recombinant human TRAIL in a mouse model of systemic acute inflammation of microbial origin represented by BALB/c mice treated with either bacterial muramyldipeptide (MDP) or lipopolysaccharide (LPS). When administered intraperitoneally (i.p.), these inflammatory bacterial compounds triggered a severe systemic inflammatory response within 2h, represented by body temperature elevation, increase of circulating serum amyloid-A (SAA) and of the number of leukocytes in the peritoneal cavity. Moreover, both MDP and LPS induced a significant elevation of the circulating levels of several inflammatory cytokines and chemokines. Noteworthy, pre-treatment with recombinant human TRAIL 48 and 72 h before administration of either MDP or LPS, significantly counteracted all acute inflammatory responses, including the elevation of key pro-inflammatory cytokines/chemokines such as IL-1α, IL-6, G-CSF, MCP-1. These data demonstrate for the first time that TRAIL has a potent anti-inflammatory activity, which might be beneficial for the anti-tumoral activity of TRAIL.

}, keywords = {Acetylmuramyl-Alanyl-Isoglutamine, Acute Disease, Animals, Chemokine CCL2, Cytokines, Disease Models, Animal, Down-Regulation, Granulocyte Colony-Stimulating Factor, Humans, Immunoassay, Inflammation, Inflammation Mediators, Interleukin-1alpha, Interleukin-6, Lipopolysaccharides, Male, Mice, Mice, Inbred BALB C, Recombinant Proteins, Serum Amyloid A Protein, TNF-Related Apoptosis-Inducing Ligand}, issn = {1096-0023}, doi = {10.1016/j.cyto.2012.06.001}, author = {Marcuzzi, Annalisa and Secchiero, Paola and Crovella, Sergio and Zauli, Giorgio} } @article {1611, title = {Tag-single nucleotide polymorphism-based human leukocyte antigen genotyping in celiac disease patients from northeastern Italy.}, journal = {Hum Immunol}, volume = {72}, year = {2011}, month = {2011 Jun}, pages = {499-502}, abstract = {

We genotyped celiac disease (CD)-associated haplotypes DQ2.5, DQ8, DQ2.2, and DQ7 in 1005 CD patients from North Eastern Italy using a Tag-single nucleotide polymorphism (SNPs) approach and real time PCR platform, checking the accuracy and reliability of the method and comparing it to traditional PCR-SSP. Only 14 of 2010 chromosomes analyzed (0.7\%) showed discrepancies between the Tag-SNPs real-time polymerase chain reaction (PCR) method and the PCR-single-strand polymorphism (SSP) technique, indicating a high sensitivity and specificity (ranging from 0.987 to 1 and from 0.998 to 0.999, respectively) for tagging with respect to corresponding human leukocyte antigen (HLA) alleles identified by PCR-SSP. Moreover, the overall cost of the Tag-SNPs HLA typing method was low (3 to 4 {\texteuro}/sample instead of 35 to 70 {\texteuro}/sample with commercial kits), making it suitable for mass screenings. Hence, we believe that the Tag-SNPs HLA typing could be used to complement or replace classic HLA typing in at high-risk groups, for research purposes and eventually in population screening programs.

}, keywords = {Adolescent, Adult, Aged, Celiac Disease, Child, Child, Preschool, Female, Humans, Infant, Italy, Male, Mass Screening, Middle Aged, Polymerase Chain Reaction, Polymorphism, Single Nucleotide, Reproducibility of Results, Reverse Transcriptase Polymerase Chain Reaction, Sensitivity and Specificity}, issn = {1879-1166}, doi = {10.1016/j.humimm.2011.03.008}, author = {Vatta, Serena and Fabris, Annalisa and Segat, Ludovica and Not, Tarcisio and Crovella, Sergio} } @article {1654, title = {Targeting farnesyl-transferase as a novel therapeutic strategy for mevalonate kinase deficiency: in vitro and in vivo approaches.}, journal = {Pharmacol Res}, volume = {61}, year = {2010}, month = {2010 Jun}, pages = {506-10}, abstract = {

Mevalonate kinase deficiency (MKD) is a rare inborn auto-inflammatory disease due to the impairment of the pathway for the biosynthesis of cholesterol and non-sterol isoprenoids. The shortage of isoprenoids compounds and in particular of geranylgeranylpyrophosphate (GGPP) was recently associated to the MKD characteristic inflammatory attacks. The aim of this study is to demonstrate that the normalization of the mevalonate pathway intermediates levels and in particular of GGPP, through the specific inhibition of farnesyl-transferase (FT) with Manumycin A could ameliorate the inflammatory phenotype of MKD patients. The effect of Manumycin A was first evaluated in MKD mouse and cellular models, chemically obtained using the aminobisphosphonate alendronate (ALD), and then in monocytes isolated from 2 MKD patients. Our findings were compared to those obtained by using natural exogenous isoprenoids (NEIs). Manumycin A was able to significantly reduce the inflammatory marker serum amyloid A in ALD-treated Balb/c mice, as well as IL-1 beta secretion in ALD-monocytes and in MKD patients. These results clearly showed that, through the inhibition of FT, an increased number of mevalonate pathway intermediates could be redirected towards the synthesis of GGPP diminishing the inflammatory response. The importance in limiting the shortage of GGPP was emphasized by the anti-inflammatory effect of NEIs that, due to their biochemical structure, can enter the MKD pathway. In conclusion, manumycin A, as well as NEIs, showed anti-inflammatory effect in MKD models and especially in MKD-monocytes, suggesting novel approaches in the treatment of MKD, an orphan disease without any efficacious treatment currently available.

}, keywords = {Adult, Animals, Anti-Inflammatory Agents, Cells, Cultured, Child, Preschool, Enzyme Inhibitors, Farnesyltranstransferase, Female, Humans, Male, Mevalonate Kinase Deficiency, Mevalonic Acid, Mice, Mice, Inbred BALB C, Monocytes, Polyenes, Polyisoprenyl Phosphates, Polyunsaturated Alkamides, Young Adult}, issn = {1096-1186}, doi = {10.1016/j.phrs.2010.02.012}, author = {De Leo, Luigina and Marcuzzi, Annalisa and Decorti, Giuliana and Tommasini, Alberto and Crovella, Sergio and Pontillo, Alessandra} }