Article
Immunology
Alexandra Correia, Pedro Alves, Ricardo Frois-Martins, Luzia Teixeira, Manuel Vilanova
Summary: Neospora caninum is a protozoan that causes abortion and still-births in cattle. In this study, we extended a mucosal vaccination approach using N. caninum membrane proteins and CpG adjuvant by incorporating the carbomer-based adjuvant Carbigen (TM). Immunized mice showed increased proportions and numbers of memory CD4(+) and CD8(+) T cells. When infected with N. caninum, the immunized mice had lower parasite burdens and produced higher levels of IL-17A.
Article
Veterinary Sciences
Shan Li, Nan Zhang, Shaoxiong Liu, Jianhua Li, Li Liu, Xiaocen Wang, Xin Li, Pengtao Gong, Xichen Zhang
Summary: Nc14-3-3 protein can induce effective immune responses in mice and provide protective effects against Nc-1 tachyzoite exposure. By promoting the production of Th1 cytokines, Nc14-3-3 significantly stimulates the immune response in mice, leading to increased survival rates and times.
FRONTIERS IN VETERINARY SCIENCE
(2021)
Article
Immunology
Flavia Batista Ferreira Franca, Murilo Vieira Silva, Mariana Ferreira Silva, Eliezer Lucas Pires Ramos, Vanessa dos Santos Miranda, Caroline Martins Mota, Fernanda Maria Santiago, Jose Roberto Mineo, Tiago Wilson Patriarca Mineo
Summary: This study aimed to evaluate the role of TNF in immune responses during N. caninum infection. The results showed that TNFR1 is required for regular IgG subclass production and antigen recognition, and plays a crucial role in mediating host resistance to N. caninum infection.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Cory J. Knudson, Pedro Alves-Peixoto, Hiromi Muramatsu, Colby Stotesbury, Lingjuan Tang, Paulo J. C. Lin, Ying K. Tam, Drew Weissman, Norbert Pardi, Luis J. Sigal
Summary: Different doses of modified mRNA vaccines can induce strong CD8 T cell responses, providing protective immunity and increasing the memory CD8 T cell pool, which can be used to create CD8 T cell-based vaccines against viral infections.
Review
Immunology
Ragab M. Fereig, Mosaab A. Omar, Abdullah F. Alsayeqh
Summary: Toxoplasmosis and neosporosis are important protozoan diseases worldwide, and controlling these diseases is currently challenging. Understanding host-parasite interactions and host strategies to combat infections can aid in developing effective control measures, including vaccines. Macrophages and the production of interleukin-12 (IL-12) and interferon gamma (IFN-gamma) play a crucial role in successful vaccine candidates. However, identifying potential vaccine candidates is a time-consuming process.
Article
Veterinary Sciences
Guili Yu, Wei Liang, Qiankun Yang, Jinxin Wang, Yu Wang, Tianmeng Zhang, Xiao Zhang, Hui Fan, Panpan Zhao, Lili Cao, Jingquan Dong
Summary: Neospora caninum's dense granule proteins, including GRA4, exhibit potential as vaccine candidates, triggering protective immune responses and significantly improving survival rates and reducing parasite burden.
FRONTIERS IN VETERINARY SCIENCE
(2021)
Article
Immunology
Ragab M. Fereig, Hanan H. Abdelbaky, Yoshifumi Nishikawa
Summary: This study evaluated the potential of recombinant N. caninum dense granule protein 6 fused with glutathione-S-transferase (NcGRA6+GST) as a vaccine candidate against neosporosis in a pregnant mouse model. The results showed that NcGRA6+GST partially protected the dams and offspring from N. caninum infection during pregnancy, with higher survival rates and lower parasite burden. This suggests the efficacy of recombinant NcGRA6 for interrupting the vertical transmission of N. caninum in mice by reducing the severity of infections in dams and offspring.
Article
Cell Biology
Zahady D. Velasquez, Lisbeth Rojas-Baron, Camilo Larrazabal, Marcelo Salierno, Ulrich Gaertner, Learta Pervizaj-Oruqaj, Susanne Herold, Carlos Hermosilla, Anja Taubert
Summary: The study reveals that Neospora caninum interferes with host cell cycle progression and significantly affects the nuclear phenotype of primary bovine endothelial host cells.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2022)
Article
Parasitology
Jin-Ming Chen, Shan-Shan Zhao, De-Liang Tao, Jing-Yu Li, Xin Yang, Ying-Ying Fan, Jun-Ke Song, Qun Liu, Guang-Hui Zhao
Summary: This study reveals that the expression of host miRNAs changes during N. caninum infection, and the upregulation of chi-miR-146a may promote the propagation of N. caninum in host cells.
PARASITES & VECTORS
(2023)
Article
Immunology
Xu Zhang, Yuru Wang, Pengtao Gong, Xiaocen Wang, Nan Zhang, Mengge Chen, Ran Wei, Xichen Zhang, Xin Li, Jianhua Li
Summary: This study investigated the host cell mitophagy induced by Neospora caninum and its role in parasite infection. The results showed that N. caninum can induce mitophagy in host cells and regulate the production of inflammatory cytokines. Promoting mitophagy worsened the parasite infection and inhibited the inflammatory response, while inhibiting mitophagy had the opposite effects.
FRONTIERS IN IMMUNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Xu Zhang, Xin Li, Pengtao Gong, Xiaocen Wang, Nan Zhang, Mengge Chen, Xichen Zhang, Jianhua Li
Summary: Neospora caninum is an intracellular parasite that causes neosporosis and economic losses in dairy and beef industries worldwide. The immune response by host cells against N. caninum involves TLR2/TLR3 pathways which regulate IL-12p40 production and control parasite burden.
MOLECULAR IMMUNOLOGY
(2021)
Article
Multidisciplinary Sciences
Xiaolei Wang, Terrence Tsz-Tai Yuen, Ying Dou, Jingchu Hu, Renhao Li, Zheng Zeng, Xuansheng Lin, Huarui Gong, Celia Hoi-Ching Chan, Chaemin Yoon, Huiping Shuai, Deborah Tip-Yin Ho, Ivan Fan-Ngai Hung, Bao-Zhong Zhang, Hin Chu, Jian-Dong Huang
Summary: Researchers demonstrate the importance of cellular immunity in protecting against SARS-CoV-2 by showing that mice lacking B cells can still develop a robust immune response through vaccination or viral challenge. This study has important implications for understanding the impact of SARS-CoV-2 variants on the immune system.
NATURE COMMUNICATIONS
(2023)
Article
Immunology
Jielin Wang, Xiaocen Wang, Pengtao Gong, Fu Ren, Xin Li, Nan Zhang, Xu Zhang, Xichen Zhang, Jianhua Li
Summary: Autophagy plays a crucial role in defending against intracellular pathogens, including Neospora caninum. The study found that N. caninum induced autophagy in the early stages of infection, but the autophagic flux was blocked as infection progressed. Inhibition of the early stages of autophagy could be a potential strategy for controlling neosporosis.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2021)
Article
Microbiology
Hanan H. Abdelbaky, Shuichiro Mitsuhashi, Kenichi Watanabe, Nanako Ushio, Miku Miyakawa, Hidefumi Furuoka, Yoshifumi Nishikawa
Summary: CXCR3 plays an important role in resistance to Neospora caninum infection. CXCR3KO mice showed lower survival rate, decreased body weight, and higher clinical scores compared to WT mice. In the early stage of infection, CXCR3KO mice displayed increased proportions and numbers of CD11c-positive cells. However, there were no differences in parasite load between CXCR3KO and WT mice at 5 and 21 days post infection.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Immunology
Lang Jiang, Lu Liu, Miaomiao Zhang, Linxia Zhang, Cuisong Zhu, Qian He, Lilin Ye, Chen Zhao, Zejun Li, Jianqing Xu, Xiaoyan Zhang
Summary: Research has shown that CD8+ lung tissue resident memory T (T-RM) cells play a crucial role in protecting against respiratory viruses. By studying mouse infection models, it was found that lung CD8+ T-RM cells can quickly respond to antigen re-exposure and induce interferon-stimulated genes (ISGs) in the surrounding tissues. The study also revealed that the induction of certain important antiviral ISGs and the suppression of key inflammatory cytokines are dependent on IFN-gamma signaling.
FRONTIERS IN IMMUNOLOGY
(2022)
Article
Immunology
Vania Gaio, Tania Lima, Manuel Vilanova, Nuno Cerca, Angela Franca
Summary: The mazEF homologue does not play a role in VBNC cell formation, antimicrobial susceptibility, virulence factor expression, or immune cell response in S. epidermidis strain 1457.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2022)
Article
Chemistry, Applied
Mariem Hamed, Elisabete Coelho, Rita Bastos, Dmitry Evtuguin, Sonia S. Ferreira, Tania Lima, Manuel Vilanova, Assaad Sila, Manuel A. Coimbra, Ali Bougatef
Summary: This study successfully extracted and purified a novel arabinogalactan from pistachio external hull, which showed potential immunostimulatory activity and could be used in nutraceutical and biomedical applications.
Article
Oncology
Lara Diego-Gonzalez, Andrea Fernandez-Carrera, Ana Igea, Amparo Martinez-Perez, M. Elisabete C. D. Real Oliveira, Andreia C. Gomes, Carmen Guerra, Mariano Barbacid, Africa Gonzalez-Fernandez, Rosana Simon-Vazquez
Summary: The combined inhibition of YAP and FOSL-1 mRNA expression has shown superior control over tumor growth in pancreatic cancer, while also reducing the tumor stroma.
Article
Chemistry, Medicinal
Immacolata Maietta, Amparo Martinez-Perez, Rosana Alvarez, Angel R. De Lera, Africa Gonzalez-Fernandez, Rosana Simon-Vazquez
Summary: Epigenetic modifications play a crucial role in the proliferation, drug resistance, and metastasis of pancreatic ductal adenocarcinoma (PDAC). In this study, researchers tested the effects of different epigenetic enzyme inhibitors and a drug that restores p53 function on PDAC cell lines. The results showed that inhibiting certain enzymes or combining drugs with gemcitabine can significantly reduce cell viability and potentially serve as a new treatment strategy for PDAC. RNA-Seq analysis also identified potential biomarkers for synergy.
Article
Food Science & Technology
Sofia F. Reis, Vitor J. Martins, Rita Bastos, Tania Lima, Viviana G. Correia, Benedita A. Pinheiro, Lisete M. Silva, Angelina S. Palma, Paula Ferreira, Manuel Vilanova, Manuel A. Coimbra, Elisabete Coelho
Summary: This study aims to investigate the feasibility of brewer's spent yeast (BSY) microcapsules as oral carriers for food and biomedical applications. The results demonstrate that BSY microcapsules have strong resistance to digestion and are rich in (beta 1 -> 3)-glucans, which can be recognized by the human Dectin-1 immune receptor. Additionally, the digested material is recognized by various lectins related to (beta 1 -> 3)-glucans, glycogen, and mannans.
Article
Chemistry, Applied
Sonia S. Ferreira, Alexandra Correia, Artur M. S. Silva, Dulcineia Ferreira Wessel, Susana M. Cardoso, Manuel Vilanova, Manuel A. Coimbra
Summary: Broccoli by-products were used to study the structure-function relationships and immunostimulatory activity of pectic polysaccharides. Pectic polysaccharides extracted by hot water showed high immunostimulatory activity, which was further enhanced by treatment with 80% ethanol. The action of pectin methylesterase and endo-polygalacturonase on the polysaccharides resulted in a fraction with high immunostimulatory activity. Therefore, agri-food by-products are an important source of pectic polysaccharide functional food ingredients.
CARBOHYDRATE POLYMERS
(2023)
Article
Chemistry, Medicinal
Ana S. P. Moreira, Diana Gaspar, Sonia S. Ferreira, Alexandra Correia, Manuel Vilanova, Marie-Mathilde Perrineau, Philip D. Kerrison, Claire M. M. Gachon, Maria Rosario Domingues, Manuel A. Coimbra, Filipe M. Coreta-Gomes, Claudia Nunes
Summary: This study aimed to characterize the chemical structure of water-soluble polysaccharides from Saccharina latissima and evaluate their immunostimulatory and hypocholesterolemic activities. It was found that laminarans and two fractions of fucose-containing sulphated polysaccharides showed immunostimulatory activity on B lymphocytes, and one of the fractions exhibited a significant effect in reducing cholesterol bioaccessibility.
Review
Veterinary Sciences
Catarina Sofia Aluai-Cunha, Catarina Alves Pinto, Isabel Alexandra Duarte Ferreira Lopes Correia, Claudia Alexandra dos Reis Serra, Andreia Alexandra Ferreira Santos
Summary: Cancer is a major global health problem with increasing mortality and incidence rate. The commensal microbiota plays a role in regulating physiological and pathological processes, including cancer. Recent studies have found similarities between the gut microbiota of humans and companion animals. This study reviews the relationship between microbiota and cancer in humans and animals and compares their resemblance in various types of tumors.
VETERINARY AND COMPARATIVE ONCOLOGY
(2023)
Article
Immunology
Amparo Martinez-Perez, Lara Diego-Gonzalez, Manuel Vilanova, Alexandra Correia, Rosana Simon-Vazquez, Africa Gonzalez-Fernandez
Summary: In this study, we developed new vaccines for pancreatic cancer using chitosan nanocapsules (CS NCs) containing IMQ as adjuvant, targeting the K-Ras mutation G12V. However, our results suggest that the different combinations of our CS NCs vaccines may enhance tumor growth and reduce survival rate, possibly due to an inadequate immune response and the induction of a regulatory tolerogenic response.
FRONTIERS IN IMMUNOLOGY
(2023)
News Item
Immunology
Iris Caramalho, Maria Strecht Almeida, Manuel Vilanova, Carlos Penha-Goncalves
EUROPEAN JOURNAL OF IMMUNOLOGY
(2023)
Article
Cell Biology
Nicholas J. First, Katelyn M. Parrish, Amparo Martinez-Perez, Africa Gonzalez-Fernandez, Sushma Bharrhan, Matthew Woolard, James B. Mclachlan, Rona S. Scott, Jian Wang, Monica C. Gestal
Summary: This study reveals the important role of eosinophils in Bordetella bronchiseptica infection. Eosinophils are involved in the immune response through their interaction with B/T cells and the formation of iBALT. Furthermore, XCL1 is found to be critical for the formation of iBALT, suggesting a novel role for eosinophils in adaptive immunity.
Article
Microbiology
Fernando Oliveira, Tania Lima, Alexandra Correia, Ana Margarida Silva, Cristina Soares, Simone Morais, Samira Weisselberg, Manuel Vilanova, Holger Rohde, Nuno Cerca
Summary: This study reveals the pivotal role of the iron-regulated loci hts and fhuC in biofilm formation and survival of Staphylococcus epidermidis within the host, providing important insights for future therapeutic strategies against infections caused by this pathogen.
MICROBIOLOGY SPECTRUM
(2022)