1
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Papa V, Li Pomi F, Borgia F, Vaccaro M, Pioggia G, Gangemi S. Alarmins in cutaneous malignant melanoma: An updated overview of emerging evidence on their pathogenetic, diagnostic, prognostic, and therapeutic role. J Dermatol 2024; 51:927-938. [PMID: 38775220 DOI: 10.1111/1346-8138.17278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/04/2024] [Accepted: 05/07/2024] [Indexed: 07/04/2024]
Abstract
Malignant cutaneous melanoma is the leading cause of death for skin cancer to date, with globally increasing incidence rates. In this epidemiological scenario, international scientific research is exerting efforts to identify new clinical strategies aimed at the prognostic amelioration of the disease. Very promising and groundbreaking in this context is the scientific interest related to alarmins and their pioneering utility in the setting of the pathogenetic understanding, diagnosis, prognosis, and therapy for malignant cutaneous melanoma. However, the scientific investigations on this matter should not overlook their still well-presented dual and contradictory role. The aim of our critical analysis is to provide an up-to-date overview of the emerging evidence concerning the dichotomous role of alarmins in the aforementioned clinical settings. Our literature revision was based on the extensive body of both preclinical and clinical findings published on the PubMed database over the past 5 years. In addition to this, we offer a special focus on potentially revolutionary new therapeutic frontiers, which, on the strength of their earliest successes in other clinical areas, could inaugurate a new era of personalized and precision medicine in the field of dermato-oncology.
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Affiliation(s)
- Vincenzo Papa
- Department of Clinical and Experimental Medicine, School and Operative Unit of Allergy and Clinical Immunology, University of Messina, Messina, Italy
| | - Federica Li Pomi
- Department of Precision Medicine in Medical, Surgical and Critical Care (Me.Pre.C.C.), University of Palermo, Palermo, Italy
| | - Francesco Borgia
- Department of Clinical and Experimental Medicine, Section of Dermatology, University of Messina, Messina, Italy
| | - Mario Vaccaro
- Department of Clinical and Experimental Medicine, Section of Dermatology, University of Messina, Messina, Italy
| | - Giovanni Pioggia
- Institute for Biomedical Research and Innovation (IRIB), National Research Council of Italy (CNR), Messina, Italy
| | - Sebastiano Gangemi
- Department of Clinical and Experimental Medicine, School and Operative Unit of Allergy and Clinical Immunology, University of Messina, Messina, Italy
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2
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Pennone V, Rosini E, Mascheroni E, Gianola S, Castellini G, Bargeri S, Lovati AB. Revolutionizing orthopedic healthcare: a systematic review unveiling recombinant antimicrobial peptides. Front Microbiol 2024; 15:1370826. [PMID: 38756724 PMCID: PMC11097975 DOI: 10.3389/fmicb.2024.1370826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 04/08/2024] [Indexed: 05/18/2024] Open
Abstract
The increasing demand for orthopedic surgeries, including joint replacements, is driven by an aging population and improved diagnosis of joint conditions. Orthopedic surgeries carry a risk of infection, especially in patients with comorbidities. The rise of antibiotic resistance exacerbates this issue, necessitating alternatives like in vitro bioengineered antimicrobial peptides (AMPs), offering broad-spectrum activity and multiple action mechanisms. This review aimed to assess the prevalence of antimicrobial potential and the yield after purification among recombinant AMP families. The antimicrobial potential was evaluated using the Minimum Inhibitory Concentration (MIC) values against the most common bacteria involved in clinical infections. This systematic review adhered to PRISMA guidelines, focusing on in vitro studies of recombinant AMPs. The search strategy was run on PubMed, Scopus and Embase up to 30th March 2023. The Population, Exposure and Outcome model was used to extract the data from studies and ToxRTool for the risk of bias analysis. This review included studies providing peptide production yield data and MIC values against pathogenic bacteria. Non-English texts, reviews, conference abstracts, books, studies focusing solely on chemical synthesis, those reporting incomplete data sets, using non-standard MIC assessment methods, or presenting MIC values as ranges rather than precise concentrations, were excluded. From 370 publications, 34 studies on AMPs were analyzed. These covered 46 AMPs across 18 families, with Defensins and Hepcidins being most common. Yields varied from 0.5 to 2,700 mg/L. AMPs were tested against 23 bacterial genera, with MIC values ranging from 0.125 to >1,152 μg/mL. Arenicins showed the highest antimicrobial activity, particularly against common orthopedic infection pathogens. However, AMP production yields varied and some AMPs demonstrated limited effectiveness against certain bacterial strains. This systematic review emphasizes the critical role of bioengineered AMPs to cope infections and antibiotic resistance. It meticulously evaluates recombinant AMPs, focusing on their antimicrobial efficacy and production yields. The review highlights that, despite the variability in AMP yields and effectiveness, Arenicins and Defensins are promising candidates for future research and clinical applications in treating antibiotic-resistant orthopedic infections. This study contributes significantly to the understanding of AMPs in healthcare, underscoring their potential in addressing the growing challenge of antibiotic resistance. Systematic review registration:https://osf.io/2uq4c/.
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Affiliation(s)
- Vincenzo Pennone
- Cell and Tissue Engineering Laboratory, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - Elena Rosini
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Elena Mascheroni
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Silvia Gianola
- Unit of Clinical Epidemiology, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - Greta Castellini
- Unit of Clinical Epidemiology, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - Silvia Bargeri
- Unit of Clinical Epidemiology, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - Arianna B. Lovati
- Cell and Tissue Engineering Laboratory, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
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3
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Senjor E, Pirro M, Švajger U, Prunk M, Sabotič J, Jewett A, Hensbergen PJ, Perišić Nanut M, Kos J. Different glycosylation profiles of cystatin F alter the cytotoxic potential of natural killer cells. Cell Mol Life Sci 2023; 81:8. [PMID: 38092995 PMCID: PMC10719177 DOI: 10.1007/s00018-023-05041-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 10/13/2023] [Accepted: 11/06/2023] [Indexed: 12/17/2023]
Abstract
Cystatin F, a cysteine peptidase inhibitor, is a potent modulator of NK cytotoxicity. By inhibiting granule-mediated cytotoxicity pathway, cystatin F induces formation of non-functional NK cell stage, called split-anergy. We show that N-glycosylation determines the localization and cellular function of cystatin F. Cystatin F mostly exhibited high-mannose glycosylation in U-937 cells, both high-mannose and complex glycosylation in NK-92 and primary NKs, and predominantly complex glycosylation in super-charged NKs. Manipulating N-glycosylation with kifunensine increased high-mannose glycosylation of cystatin F and lysosome localisation, which decreased cathepsin C activity and reduced NK cytotoxicity. Mannose-6-phosphate could significantly reduce the internalization of extracellular cystatin F. By comparing NK cells with different cytotoxic potentials, we found that high-mannose cystatin F was strongly associated with lysosomes and cathepsin C in NK-92 cell line. In contrast, in highly cytotoxic super-charged NKs, cystatin F with complex glycosylation was associated with the secretory pathway and less prone to inhibit cathepsin C. Modulating glycosylation to alter cystatin F localisation could increase the cytotoxicity of NK cells, thereby enhancing their therapeutic potential for treating cancer patients.
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Affiliation(s)
- Emanuela Senjor
- Department of Biotechnology, Jožef Stefan Institute, Ljubljana, Slovenia
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva Cesta 7, 1000, Ljubljana, Slovenia
| | - Martina Pirro
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
| | - Urban Švajger
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva Cesta 7, 1000, Ljubljana, Slovenia
- Blood Transfusion Centre of Slovenia, Ljubljana, Slovenia
| | - Mateja Prunk
- Department of Biotechnology, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Jerica Sabotič
- Department of Biotechnology, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Anahid Jewett
- Division of Oral Biology and Medicine, The Jane and Jerry Weintraub Center for Reconstructive Biotechnology, School of Dentistry, University of California Los Angeles, Los Angeles, USA
- The Jonsson Comprehensive Cancer Center, Los Angeles, USA
| | - Paul J Hensbergen
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Janko Kos
- Department of Biotechnology, Jožef Stefan Institute, Ljubljana, Slovenia.
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva Cesta 7, 1000, Ljubljana, Slovenia.
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4
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Shang L, Zhou J, Tu J, Zeng X, Qiao S. Evaluation of Effectiveness and Safety of Microcin C7 in Weaned Piglets. Animals (Basel) 2022; 12:ani12233267. [PMID: 36496787 PMCID: PMC9739829 DOI: 10.3390/ani12233267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/13/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022] Open
Abstract
The effects and safety of dietary supplementation with Microcin C7 (C7) were evaluated in 216 weaned piglets. The pigs were given a control corn−soybean meal basal diet or C7 diet (control diet supplemented with 250, 500, 750, 1000, or 5000 mg C7/kg diets). Compared with the control group, the 500 mg/kg C7 supplementation group had better intestinal morphological indicators (p < 0.05), which may help maintain intestinal epithelial function and increase the growth performance (p < 0.05) and apparent total tract digestibility (p < 0.05). The diarrhea indexes of the 250, 500, and 750 mg/kg groups were significantly lower than that of the control group at 0−28 d (p < 0.05), and the 500 mg/kg group had the lowest diarrhea indexes (linear and quadratic, p < 0.05). A comprehensive analysis showed that microbial structure was significantly correlated with the degree of diarrhea, and the diarrhea-alleviating effect of C7 may be related to its selective regulation of specific microbial taxa. The 250 and 500 mg/kg C7 supplementation also significantly improved several immune indices of piglets (p < 0.05). Compared with the control diet, 5000 mg/kg C7 supplementation had no significant adverse effect on all parameters. Overall, the 250−500 mg/kg dose had the best effect, and the highest dose (5000 mg/kg) posed no toxicity risk. Therefore, C7 appears safe for use as an alternative to antibiotic growth promoters in weaned piglets.
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Affiliation(s)
- Lijun Shang
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre, China Agricultural University, Beijing 100193, China
- Beijing Bio-Feed Additives Key Laboratory, Beijing 100193, China
| | - Junyan Zhou
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre, China Agricultural University, Beijing 100193, China
- Beijing Bio-Feed Additives Key Laboratory, Beijing 100193, China
| | - Jiayu Tu
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre, China Agricultural University, Beijing 100193, China
- Beijing Bio-Feed Additives Key Laboratory, Beijing 100193, China
| | - Xiangfang Zeng
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre, China Agricultural University, Beijing 100193, China
- Beijing Bio-Feed Additives Key Laboratory, Beijing 100193, China
| | - Shiyan Qiao
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre, China Agricultural University, Beijing 100193, China
- Beijing Bio-Feed Additives Key Laboratory, Beijing 100193, China
- Correspondence: ; Tel.: +86-10-62733588; Fax: +86-10-62733688
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5
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Adamiak M, Ciechanowicz A, Chumak V, Bujko K, Ratajczak J, Brzezniakiewicz-Janus K, Kucia M, Ratajczak MZ. Novel Evidence That Alternative Pathway of Complement Cascade Activation is Required for Optimal Homing and Engraftment of Hematopoietic Stem/progenitor Cells. Stem Cell Rev Rep 2022; 18:1355-1365. [PMID: 35013937 PMCID: PMC9033710 DOI: 10.1007/s12015-021-10318-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/09/2021] [Indexed: 01/12/2023]
Abstract
We reported in the past that activation of the third (C3) and fifth element (C5) of complement cascade (ComC) is required for a proper homing and engraftment of transplanted hematopoietic stem/progenitor cells (HSPCs). Since myeloablative conditioning for transplantation triggers in recipient bone marrow (BM) state of sterile inflammation, we have become interested in the role of complement in this process and the potential involvement of alternative pathway of ComC activation. We noticed that factor B deficient mice (FB-KO) that do not activate properly alternative pathway, engraft poorly with BM cells from normal wild type (WT) mice. We observed defects both in homing and engraftment of transplanted HSPCs. To shed more light on these phenomena, we found that myeloablative lethal irradiation conditioning for transplantation activates purinergic signaling, ComC, and Nlrp3 inflammasome in WT mice, which is significantly impaired in FB-KO animals. Our proteomics analysis revealed that conditioned for transplantation lethally irradiated FB-KO compared to normal control animals have lower expression of several proteins involved in positive regulation of cell migration, trans-endothelial migration, immune system, cellular signaling protein, and metabolic pathways. Overall, our recent study further supports the role of innate immunity in homing and engraftment of HSPCs.
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Affiliation(s)
- Mateusz Adamiak
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, 500 S. Floyd Street, Rm. 107, Louisville, KY 40202 USA
| | - Andrzej Ciechanowicz
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, 500 S. Floyd Street, Rm. 107, Louisville, KY 40202 USA
| | - Vira Chumak
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, 500 S. Floyd Street, Rm. 107, Louisville, KY 40202 USA
| | - Kamila Bujko
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, 500 S. Floyd Street, Rm. 107, Louisville, KY 40202 USA
| | - Janina Ratajczak
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, 500 S. Floyd Street, Rm. 107, Louisville, KY 40202 USA
| | | | - Magdalena Kucia
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, 500 S. Floyd Street, Rm. 107, Louisville, KY 40202 USA
- Laboratory of Regenerative Medicine, Warsaw Medical University, ul. Banacha 1B, Warsaw, 02-097 Poland
| | - Mariusz Z. Ratajczak
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, 500 S. Floyd Street, Rm. 107, Louisville, KY 40202 USA
- Laboratory of Regenerative Medicine, Warsaw Medical University, ul. Banacha 1B, Warsaw, 02-097 Poland
- Department of Hematology, University of Zielona Gora, Hospital Gorzow Wlkp, Zielona Gora, Poland
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6
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Sanegre S, Eritja N, de Andrea C, Diaz-Martin J, Diaz-Lagares Á, Jácome MA, Salguero-Aranda C, García Ros D, Davidson B, Lopez R, Melero I, Navarro S, Ramon Y Cajal S, de Alava E, Matias-Guiu X, Noguera R. Characterizing the Invasive Tumor Front of Aggressive Uterine Adenocarcinoma and Leiomyosarcoma. Front Cell Dev Biol 2021; 9:670185. [PMID: 34150764 PMCID: PMC8209546 DOI: 10.3389/fcell.2021.670185] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 04/12/2021] [Indexed: 12/22/2022] Open
Abstract
The invasive tumor front (the tumor–host interface) is vitally important in malignant cell progression and metastasis. Tumor cell interactions with resident and infiltrating host cells and with the surrounding extracellular matrix and secreted factors ultimately determine the fate of the tumor. Herein we focus on the invasive tumor front, making an in-depth characterization of reticular fiber scaffolding, infiltrating immune cells, gene expression, and epigenetic profiles of classified aggressive primary uterine adenocarcinomas (24 patients) and leiomyosarcomas (11 patients). Sections of formalin-fixed samples before and after microdissection were scanned and studied. Reticular fiber architecture and immune cell infiltration were analyzed by automatized algorithms in colocalized regions of interest. Despite morphometric resemblance between reticular fibers and high presence of macrophages, we found some variance in other immune cell populations and distinctive gene expression and cell adhesion-related methylation signatures. Although no evident overall differences in immune response were detected at the gene expression and methylation level, impaired antimicrobial humoral response might be involved in uterine leiomyosarcoma spread. Similarities found at the invasive tumor front of uterine adenocarcinomas and leiomyosarcomas could facilitate the use of common biomarkers and therapies. Furthermore, molecular and architectural characterization of the invasive front of uterine malignancies may provide additional prognostic information beyond established prognostic factors.
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Affiliation(s)
- Sabina Sanegre
- Cancer CIBER (CIBERONC), Madrid, Spain.,Department of Pathology, School of Medical, University of Valencia-INCLIVA, Valencia, Spain
| | - Núria Eritja
- Cancer CIBER (CIBERONC), Madrid, Spain.,Institut de Recerca Biomèdica de LLeida (IRBLLEIDA), Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Department of Pathology, Hospital U Arnau de Vilanova and Hospital U de Bellvitge, University of Lleida - University of Barcelona, Barcelona, Spain
| | - Carlos de Andrea
- Cancer CIBER (CIBERONC), Madrid, Spain.,Clínica Universidad de Navarra, University of Navarra, Pamplona, Spain
| | - Juan Diaz-Martin
- Cancer CIBER (CIBERONC), Madrid, Spain.,Institute of Biomedicine of Sevilla, Virgen del Rocio University Hospital/CSIC/University of Sevilla/CIBERONC, Seville, Spain
| | - Ángel Diaz-Lagares
- Cancer CIBER (CIBERONC), Madrid, Spain.,Cancer Epigenomics, Translational Medical Oncology Group (Oncomet), Health Research Institute of Santiago (IDIS), University Clinical Hospital of Santiago (CHUS/SERGAS), Santiago de Compostela, Spain
| | - María Amalia Jácome
- Department of Mathematics, MODES Group, CITIC, Faculty of Science, Universidade da Coruña, A Coruña, Spain
| | - Carmen Salguero-Aranda
- Cancer CIBER (CIBERONC), Madrid, Spain.,Institute of Biomedicine of Sevilla, Virgen del Rocio University Hospital/CSIC/University of Sevilla/CIBERONC, Seville, Spain
| | - David García Ros
- Clínica Universidad de Navarra, University of Navarra, Pamplona, Spain
| | - Ben Davidson
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.,Department of Pathology, Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - Rafel Lopez
- Cancer CIBER (CIBERONC), Madrid, Spain.,Translational Medical Oncology Group (Oncomet), Health Research Institute of Santiago (IDIS), University Clinical Hospital of Santiago (CHUS/SERGAS), Santiago de Compostela, Spain.,Roche-Chus Joint Unit, Translational Medical Oncology Group (Oncomet), Health Research Institute of Santiago (IDIS), Santiago de Compostela, Spain
| | - Ignacio Melero
- Cancer CIBER (CIBERONC), Madrid, Spain.,Clínica Universidad de Navarra, University of Navarra, Pamplona, Spain
| | - Samuel Navarro
- Cancer CIBER (CIBERONC), Madrid, Spain.,Department of Pathology, School of Medical, University of Valencia-INCLIVA, Valencia, Spain
| | - Santiago Ramon Y Cajal
- Cancer CIBER (CIBERONC), Madrid, Spain.,Department of Pathology, Vall d'Hebron University Hospital, Autonomous University of Barcelona, Barcelona, Spain
| | - Enrique de Alava
- Cancer CIBER (CIBERONC), Madrid, Spain.,Institute of Biomedicine of Sevilla, Virgen del Rocio University Hospital/CSIC/University of Sevilla/CIBERONC, Seville, Spain
| | - Xavier Matias-Guiu
- Cancer CIBER (CIBERONC), Madrid, Spain.,Institut de Recerca Biomèdica de LLeida (IRBLLEIDA), Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Department of Pathology, Hospital U Arnau de Vilanova and Hospital U de Bellvitge, University of Lleida - University of Barcelona, Barcelona, Spain
| | - Rosa Noguera
- Cancer CIBER (CIBERONC), Madrid, Spain.,Department of Pathology, School of Medical, University of Valencia-INCLIVA, Valencia, Spain
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7
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Browne K, Chakraborty S, Chen R, Willcox MDP, Black DS, Walsh WR, Kumar N. A New Era of Antibiotics: The Clinical Potential of Antimicrobial Peptides. Int J Mol Sci 2020; 21:E7047. [PMID: 32987946 PMCID: PMC7582481 DOI: 10.3390/ijms21197047] [Citation(s) in RCA: 225] [Impact Index Per Article: 56.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 09/22/2020] [Accepted: 09/22/2020] [Indexed: 12/13/2022] Open
Abstract
Antimicrobial resistance is a multifaceted crisis, imposing a serious threat to global health. The traditional antibiotic pipeline has been exhausted, prompting research into alternate antimicrobial strategies. Inspired by nature, antimicrobial peptides are rapidly gaining attention for their clinical potential as they present distinct advantages over traditional antibiotics. Antimicrobial peptides are found in all forms of life and demonstrate a pivotal role in the innate immune system. Many antimicrobial peptides are evolutionarily conserved, with limited propensity for resistance. Additionally, chemical modifications to the peptide backbone can be used to improve biological activity and stability and reduce toxicity. This review details the therapeutic potential of peptide-based antimicrobials, as well as the challenges needed to overcome in order for clinical translation. We explore the proposed mechanisms of activity, design of synthetic biomimics, and how this novel class of antimicrobial compound may address the need for effective antibiotics. Finally, we discuss commercially available peptide-based antimicrobials and antimicrobial peptides in clinical trials.
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Affiliation(s)
- Katrina Browne
- School of Chemistry, University of New South Wales (UNSW) Sydney, Sydney 2052, Australia; (K.B.); (S.C.); (R.C.)
| | - Sudip Chakraborty
- School of Chemistry, University of New South Wales (UNSW) Sydney, Sydney 2052, Australia; (K.B.); (S.C.); (R.C.)
| | - Renxun Chen
- School of Chemistry, University of New South Wales (UNSW) Sydney, Sydney 2052, Australia; (K.B.); (S.C.); (R.C.)
| | - Mark DP Willcox
- School of Optometry and Vision Science, University of New South Wales (UNSW) Sydney, Sydney 2052, Australia;
| | - David StClair Black
- School of Chemistry, University of New South Wales (UNSW) Sydney, Sydney 2052, Australia; (K.B.); (S.C.); (R.C.)
| | - William R Walsh
- Surgical and Orthopaedic Research Laboratories (SORL), Prince of Wales Clinical School, Prince of Wales Hospital, University of New South Wales (UNSW), Randwick 2031, Australia;
| | - Naresh Kumar
- School of Chemistry, University of New South Wales (UNSW) Sydney, Sydney 2052, Australia; (K.B.); (S.C.); (R.C.)
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8
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Carbohydrate-Dependent and Antimicrobial Peptide Defence Mechanisms Against Helicobacter pylori Infections. Curr Top Microbiol Immunol 2019; 421:179-207. [PMID: 31123890 DOI: 10.1007/978-3-030-15138-6_8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The human stomach is a harsh and fluctuating environment for bacteria with hazards such as gastric acid and flow through of gastric contents into the intestine. H. pylori gains admission to a stable niche with nutrient access from exudates when attached to the epithelial cells under the mucus layer, whereof adherence to glycolipids and other factors provides stable and intimate attachment. To reach this niche, H. pylori must overcome mucosal defence mechanisms including the continuously secreted mucus layer, which provides several layers of defence: (1) mucins in the mucus layer can bind H. pylori and transport it away from the gastric niche with the gastric emptying, (2) mucins can inhibit H. pylori growth, both via glycans that can have antibiotic like function and via an aggregation-dependent mechanism, (3) antimicrobial peptides (AMPs) have antimicrobial activity and are retained in a strategic position in the mucus layer and (4) underneath the mucus layer, the membrane-bound mucins provide a second barrier, and can function as releasable decoys. Many of these functions are dependent on H. pylori interactions with host glycan structures, and both the host glycosylation and concentration of antimicrobial peptides change with infection and inflammation, making these interactions dynamic. Here, we review our current understanding of mucin glycan and antimicrobial peptide-dependent host defence mechanisms against H. pylori infection.
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9
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Li YX, Sibon OCM, Dijkers PF. Inhibition of NF-κB in astrocytes is sufficient to delay neurodegeneration induced by proteotoxicity in neurons. J Neuroinflammation 2018; 15:261. [PMID: 30205834 PMCID: PMC6134576 DOI: 10.1186/s12974-018-1278-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 08/12/2018] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Most neurodegenerative diseases associated with protein aggregation are hallmarked by activation of astrocytes. However, how astrocytes are activated or which signaling pathways in astrocytes contribute to pathogenesis is not clear. One long-standing question is whether the responses in astrocytes are due to stress or damage in astrocytes themselves, or because of astrocytic responses to cellular stress or damage in neurons. Here, we examine responses in astrocytes induced by expression of disease-associated, aggregation-prone proteins in other cells. We also examine the consequences of these responses in astrocytes in a model for neurodegeneration. METHODS We first examined a role for intracellular astrocytic responses in a Drosophila model for Spinocerebellar ataxia type 3 (SCA3, also known as Machado-Joseph disease), a disease caused by expansion of the polyglutamine (polyQ) stretch in the ATXN3 gene. In this Drosophila SCA3 model, eye-specific expression of a biologically relevant portion of the ATXN3 gene, containing expanded polyQ repeats (SCA3polyQ78) was expressed. In a candidate RNAi screen in the Drosophila SCA3 model, we analyzed whether downregulation of expression of specific genes in astrocytes affected degeneration induced by SCA3polyQ78 expression in Drosophila eyes. We next examined the role of astrocytes in response to proteotoxic stress in neurons induced by SCA3polyQ78 expression or amyloid beta peptides, associated with Alzheimer's disease. RESULTS Eye-specific expression of SCA3polyQ78 resulted in the presence of astrocytes in the eye, suggesting putative involvement of astrocytes in SCA3. In a candidate RNAi screen, we identified genes in astrocytes that can enhance or suppress SCA3polyQ78-induced eye degeneration. Relish, a conserved NF-κB transcription factor, was identified as an enhancer of degeneration. Activity of Relish was upregulated in our SCA3 model. Relish can exert its effect via Relish-specific AMPs, since downregulation of these AMPs attenuated degeneration. We next examined Relish signaling in astrocytes on neurodegeneration. Selective inhibition of Relish expression specifically in astrocytes extended lifespan of flies that expressed SCA3polyQ78 exclusively in neurons. Inhibition of Relish signaling in astrocytes also extended lifespan in a Drosophila model for Alzheimer's disease. CONCLUSIONS Our data demonstrate that astrocytes respond to proteotoxic stress in neurons, and that these astrocytic responses are important contributors to neurodegeneration. Furthermore, our data demonstrate that activation of NF-κB transcription factor Relish in astrocytes, induced by proteotoxic stress in neurons, enhances neurodegeneration, and that specific Relish inhibition in astrocytes extends lifespan. Our data provide direct evidence for cell-non-autonomous contributions of astrocytes to neurodegeneration, with possible implications for therapeutic interventions in multiple neurodegenerative diseases.
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Affiliation(s)
- Y X Li
- Department of Cell Biology, University of Groningen, Antonius Deusinglaan 1, 9713AV, Groningen, The Netherlands
| | - O C M Sibon
- Department of Cell Biology, University of Groningen, Antonius Deusinglaan 1, 9713AV, Groningen, The Netherlands
| | - P F Dijkers
- Department of Cell Biology, University of Groningen, Antonius Deusinglaan 1, 9713AV, Groningen, The Netherlands. .,Hubrecht Institute for Developmental Biology and Stem Cell Research, Royal Netherlands Academy of Arts and Sciences (KNAW) and UMC Utrecht, Utrecht, The Netherlands.
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10
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Shen B, Song J, Zhao Y, Zhang Y, Liu G, Li X, Guo X, Li W, Cao Z, Wu Y. Triintsin, a human pathogenic fungus-derived defensin with broad-spectrum antimicrobial activity. Peptides 2018; 107:61-67. [PMID: 30102941 DOI: 10.1016/j.peptides.2018.08.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 08/08/2018] [Accepted: 08/09/2018] [Indexed: 01/30/2023]
Abstract
Since there is a symbiotic and competitive relationship between microorganisms in the same ecological niche, fungal defensins have been found to be important resources for antimicrobial peptides. Here, a fungal defensin, triintsin, was characterized in a clinical isolate of Trichophyton interdigitale from a patient with onychomycosis. The comparison of its genomic and mRNA sequences showed the gene organization and structure of three coding exons separated by two introns. The precursor peptide of triintsin contained 85 amino acid residues, which were composed of three parts including an N-terminal signal domain of 21 residues, a pro-peptide of 47 residues that ended at lysine-arginine and a mature peptide of 38 residues at the C-terminus. The 3D-structure established by homology modeling revealed that triintsin presented a representative typical cysteine-stabilized α-helical and β-sheet fold. The reductive linear peptide of triintsin was obtained by chemical synthesis. After cyclization to form three pairs of disulfide bonds, the oxidative-type peptide displayed broad-spectrum antimicrobial activity against both gram-positive and gram-negative bacteria but also showed anti-fungal activity. Moreover, triintsin can effectively inhibit the growth of clinical strains. Altogether, the peptide is a human pathogenic fungus-derived defensin with broad-spectrum antimicrobial activity.
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Affiliation(s)
- Bingzheng Shen
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan 430072, China; Department of pharmacy, Renmin Hospital, Wuhan University, Wuhan 430060, China
| | - Jinchun Song
- Department of pharmacy, Renmin Hospital, Wuhan University, Wuhan 430060, China
| | - Yonghui Zhao
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Yaoyun Zhang
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Gaomin Liu
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Xueke Li
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Xingchen Guo
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Wenxin Li
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan 430072, China; Bio-drug Research Center, Wuhan University, Wuhan 430072, China
| | - Zhijian Cao
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan 430072, China; Bio-drug Research Center, Wuhan University, Wuhan 430072, China; Hubei Province Engineering and Technology Research, Center for Fluorinated Pharmaceuticals, Wuhan University, Wuhan 430072, China.
| | - Yingliang Wu
- State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan 430072, China; Bio-drug Research Center, Wuhan University, Wuhan 430072, China.
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11
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Okamoto T, Mathai SK, Hennessy CE, Hancock LA, Walts AD, Stefanski AL, Brown KK, Lynch DA, Cosgrove GP, Groshong SD, Cool CD, Schwarz MI, Banda NK, Thurman JM, Yang IV, Holers VM, Schwartz DA. The relationship between complement C3 expression and the MUC5B genotype in pulmonary fibrosis. Am J Physiol Lung Cell Mol Physiol 2018; 315:L1-L10. [PMID: 29565179 PMCID: PMC6087895 DOI: 10.1152/ajplung.00395.2017] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 03/15/2018] [Accepted: 03/16/2018] [Indexed: 01/12/2023] Open
Abstract
The common gain-of-function MUC5B promoter variant ( rs35705950 ) is the strongest risk factor for the development of idiopathic pulmonary fibrosis (IPF). While the role of complement in IPF is controversial, both MUC5B and the complement system play a role in lung host defense. The aim of this study was to evaluate the relationship between complement component 3 (C3) and MUC5B in patients with IPF and in bleomycin-induced lung injury in mice. To do this, we evaluated C3 gene expression in whole lung tissue from 300 subjects with IPF and 175 healthy controls. Expression of C3 was higher in IPF than healthy controls {1.40-fold increase [95% confidence interval (CI) 1.31-1.50]; P < 0.0001} and even greater among IPF subjects with the highest-risk IPF MUC5B promoter genotype [TT vs. GG = 1.59-fold (95% CI 1.15-2.20); P < 0.05; TT vs. GT = 1.66-fold (95% CI 1.20-2.30); P < 0.05]. Among subjects with IPF, C3 expression was significantly higher in the lung tissue without microscopic honeycombing than in the lung tissue with microscopic honeycombing [1.40-fold increase (95% CI 1.23- 1.59); P < 0.01]. In mice, while bleomycin exposure increased Muc5b protein expression, C3-deficient mice were protected from bleomycin-induced lung injury. In aggregate, our findings indicate that the MUC5B promoter variant is associated with higher C3 expression and suggest that the complement system may contribute to the pathogenesis of IPF.
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Affiliation(s)
- Tsukasa Okamoto
- Department of Medicine, University of Colorado , Aurora, Colorado
| | - Susan K Mathai
- Department of Medicine, University of Colorado , Aurora, Colorado
| | | | - Laura A Hancock
- Department of Medicine, University of Colorado , Aurora, Colorado
| | - Avram D Walts
- Department of Medicine, University of Colorado , Aurora, Colorado
| | | | | | | | | | | | - Carlyne D Cool
- Department of Medicine, University of Colorado , Aurora, Colorado
| | - Marvin I Schwarz
- Department of Medicine, University of Colorado , Aurora, Colorado
| | - Nirmal K Banda
- Department of Medicine, University of Colorado , Aurora, Colorado
| | - Joshua M Thurman
- Department of Medicine, University of Colorado , Aurora, Colorado
| | - Ivana V Yang
- Department of Medicine, University of Colorado , Aurora, Colorado
| | - V Michael Holers
- Department of Medicine, University of Colorado , Aurora, Colorado
| | - David A Schwartz
- Department of Medicine, University of Colorado , Aurora, Colorado
- National Jewish Health , Denver, Colorado
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12
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Moravej H, Moravej Z, Yazdanparast M, Heiat M, Mirhosseini A, Moosazadeh Moghaddam M, Mirnejad R. Antimicrobial Peptides: Features, Action, and Their Resistance Mechanisms in Bacteria. Microb Drug Resist 2018; 24:747-767. [PMID: 29957118 DOI: 10.1089/mdr.2017.0392] [Citation(s) in RCA: 189] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
In recent years, because of increased resistance to conventional antimicrobials, many researchers have started to study the synthesis of new antibiotics to control the disease-causing effects of infectious pathogens. Antimicrobial peptides (AMPs) are among the newest antibiotics; these peptides are integral compounds in all kinds of organisms and play a significant role in microbial ecology, and critically contribute to the innate immunity of organisms by destroying invading microorganisms. Moreover, AMPs may encourage cells to produce chemokines, stimulate angiogenesis, accelerate wound healing, and influence programmed cell death in multicellular organisms. Bacteria differ in their inherent susceptibility and resistance mechanisms to these peptides when responding to the antimicrobial effects of AMPs. Generally, the development of AMP resistance mechanisms is driven by direct competition between bacterial species, and host and pathogen interactions. Several studies have shown diverse mechanisms of bacterial resistance to AMPs, for example, some bacteria produce proteases and trapping proteins; some modify cell surface charge, change membrane fluidity, and activate efflux pumps; and some species make use of biofilms and exopolymers, and develop sensing systems by selective gene expression. A closer understanding of bacterial resistance mechanisms may help in developing novel therapeutic approaches for the treatment of infections caused by pathogenic organisms that are successful in developing extensive resistance to AMPs. Based on these observations, this review discusses the properties of AMPs, their targeting mechanisms, and bacterial resistance mechanisms against AMPs.
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Affiliation(s)
- Hoda Moravej
- 1 Molecular Biology Research Center, Systems Biology and Poisoning Institute, Baqiyatallah University of Medical Sciences , Tehran, Iran
| | - Zahra Moravej
- 2 Department of Hepatitis and AIDS, Pasteur Institute of Iran , Tehran, Iran
| | - Maryam Yazdanparast
- 3 Department of Pharmacology, Experimental Medicine Research Center, School of Medicine, Tehran University of Medical Sciences , Tehran, Iran
| | - Mohammad Heiat
- 4 Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences , Tehran, Iran
| | - Ali Mirhosseini
- 5 Applied Microbiology Research Center, Systems Biology and Poisoning Institute, Baqiyatallah University of Medical Sciences , Tehran, Iran
| | | | - Reza Mirnejad
- 1 Molecular Biology Research Center, Systems Biology and Poisoning Institute, Baqiyatallah University of Medical Sciences , Tehran, Iran
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13
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Du Y, Shang BY, Sheng WJ, Zhang SH, Li Y, Miao QF, Zhen YS. A recombinantly tailored β-defensin that displays intensive macropinocytosis-mediated uptake exerting potent efficacy against K-Ras mutant pancreatic cancer. Oncotarget 2018; 7:58418-58434. [PMID: 27517152 PMCID: PMC5295440 DOI: 10.18632/oncotarget.11170] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Accepted: 07/27/2016] [Indexed: 12/30/2022] Open
Abstract
K-Ras mutant pancreatic cancer cells display intensive macropinocytosis, indicating that this process may be exploited in the design of anticancer targeted therapies. In this study, we constructed a macropinocytosis-oriented recombinantly tailored defensin (DF-HSA) which consists of human β-defensin-2 (DF) and human serum albumin (HSA). The macropinocytosis intensity and cytotoxicity of DF-HSA were investigated in K-Ras mutant MIA PaCa-2 cells and wild-type BxPC-3 cells. As found, the DF-HSA uptake in MIA PaCa-2 cells was much higher than that in wild-type BxPC-3 cells. Correspondingly, the cytotoxicity of DF-HSA to MIA PaCa-2 cells was more potent than that to BxPC-3 cells. In addition, the cytotoxicity of DF-HSA was much stronger than that of β-defensin HBD2. DF-HSA suppressed cancer cell proliferation and induced mitochondrial pathway apoptosis. Notably, DF-HSA significantly inhibited the growth of human pancreatic carcinoma MIA PaCa-2 xenograft in athymic mice at well tolerated dose. By in vivo imaging, DF-HSA displayed a prominent accumulation in the tumor. The study indicates that the recombinantly tailored β-defensin can intensively enter into the K-Ras mutant pancreatic cancer cells through macropinocytosis-mediated process and exert potent therapeutic efficacy against the pancreatic carcinoma xenograft. The novel format of β-defensin may play an active role in macropinocytosis-mediated targeting therapy.
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Affiliation(s)
- Yue Du
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Perking Union Medical College, Beijing, P.R. China
| | - Bo-Yang Shang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Perking Union Medical College, Beijing, P.R. China
| | - Wei-Jin Sheng
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Perking Union Medical College, Beijing, P.R. China
| | - Sheng-Hua Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Perking Union Medical College, Beijing, P.R. China
| | - Yi Li
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Perking Union Medical College, Beijing, P.R. China
| | - Qing-Fang Miao
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Perking Union Medical College, Beijing, P.R. China
| | - Yong-Su Zhen
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Perking Union Medical College, Beijing, P.R. China
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14
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Li QQ, Chen PG, Hu ZW, Cao Y, Chen LX, Chen YX, Zhao YF, Li YM. Selective inhibition of cancer cells by enzyme-induced gain of function of phosphorylated melittin analogues. Chem Sci 2017; 8:7675-7681. [PMID: 29568430 PMCID: PMC5849211 DOI: 10.1039/c7sc03217j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 09/12/2017] [Indexed: 01/16/2023] Open
Abstract
The selective killing of cancer cells and the avoidance of drug resistance are still difficult challenges in cancer therapy. Here, we report a new strategy that uses enzyme-induced gain of function (EIGF) to regulate the structure and function of phosphorylated melittin analogues (MelAs). Original MelAs have the capacity to disrupt plasma membranes and induce cell death without selectivity. However, phosphorylation of Thr23 on one of the MelAs (MelA2-P) efficiently ameliorated the membrane lysis potency as well as the cytotoxicity for normal mammalian cells. After treatment with alkaline phosphatase (ALP), which is more active in cancer cells than normal cells, MelA2-P restored the pore-forming function around the cancer cells and induced cancer cell death selectively. This mechanism was independent of the receptor proteins and the cell uptake process, which may partially bypass the development of drug resistance in cancer cells.
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Affiliation(s)
- Qian-Qian Li
- Key Lab of Bioorganic Phosphorus Chemistry & Chemical Biology , Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China . ; ; Tel: +86-10-62796197
| | - Pu-Guang Chen
- Key Lab of Bioorganic Phosphorus Chemistry & Chemical Biology , Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China . ; ; Tel: +86-10-62796197
| | - Zhi-Wen Hu
- Key Lab of Bioorganic Phosphorus Chemistry & Chemical Biology , Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China . ; ; Tel: +86-10-62796197
| | - Yuan Cao
- Key Lab of Bioorganic Phosphorus Chemistry & Chemical Biology , Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China . ; ; Tel: +86-10-62796197
| | - Liang-Xiao Chen
- Key Lab of Bioorganic Phosphorus Chemistry & Chemical Biology , Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China . ; ; Tel: +86-10-62796197
| | - Yong-Xiang Chen
- Key Lab of Bioorganic Phosphorus Chemistry & Chemical Biology , Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China . ; ; Tel: +86-10-62796197
| | - Yu-Fen Zhao
- Key Lab of Bioorganic Phosphorus Chemistry & Chemical Biology , Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China . ; ; Tel: +86-10-62796197
| | - Yan-Mei Li
- Key Lab of Bioorganic Phosphorus Chemistry & Chemical Biology , Department of Chemistry , Tsinghua University , Beijing 100084 , P. R. China . ; ; Tel: +86-10-62796197
- Beijing Institute for Brain Disorders , Beijing 100069 , P. R. China
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15
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Ratajczak MZ, Suszynska M, Kucia M. Does it make sense to target one tumor cell chemotactic factor or its receptor when several chemotactic axes are involved in metastasis of the same cancer? Clin Transl Med 2016; 5:28. [PMID: 27510263 PMCID: PMC4980325 DOI: 10.1186/s40169-016-0113-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 07/28/2016] [Indexed: 02/06/2023] Open
Abstract
The major problem with cancer progression and anti-cancer therapy is the inherent ability of cancer cells to migrate and establish distant metastases. This ability to metastasize correlates with the presence in a growing tumor of cells with a more malignant phenotype, which express certain cancer stem cell markers. The propensity of malignant cells to migrate and their resistance to radio-chemotherapy somewhat mimics the properties of normal developmentally early stem cells that migrate during organogenesis in the developing embryo. In the past, several factors, including cell migration-promoting cytokines, chemokines, growth factors, bioactive lipids, extracellular nucleotides, and even H(+) ions, were found to influence the metastasis of cancer cells. This plethora of pro-migratory factors demonstrates the existence of significant redundancy in the chemoattractants for cancer cells. In spite of this obvious fact, significant research effort has been dedicated to demonstrating the crucial involvement of particular pro-metastatic factor-receptor axes and the development of new drugs targeting one receptor or one chemoattractant. Based on our own experience working with a model of metastatic rhabdomyosarcoma as well as the work of others, in this review we conclude that targeting a single receptor-ligand pro-metastatic axis will not effectively prevent metastasis and that we should seek other more effective therapeutic options.
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Affiliation(s)
- Mariusz Z Ratajczak
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, 500 S. Floyd Street, Rm. 107, Louisville, KY 40202, USA. .,Department of Regenerative Medicine, Medical University of Warsaw, Warsaw, Poland.
| | - Malwina Suszynska
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, 500 S. Floyd Street, Rm. 107, Louisville, KY 40202, USA.,Department of Regenerative Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Magda Kucia
- Stem Cell Institute at James Graham Brown Cancer Center, University of Louisville, 500 S. Floyd Street, Rm. 107, Louisville, KY 40202, USA.,Department of Regenerative Medicine, Medical University of Warsaw, Warsaw, Poland
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16
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Musrati AA, Tervahartiala T, Gürsoy M, Könönen E, Fteita D, Sorsa T, Uitto VJ, Gürsoy UK. Human neutrophil peptide-1 affects matrix metalloproteinase-2, -8 and -9 secretions of oral squamous cell carcinoma cell lines in vitro. Arch Oral Biol 2016; 66:1-7. [DOI: 10.1016/j.archoralbio.2016.02.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 12/08/2015] [Accepted: 02/01/2016] [Indexed: 01/13/2023]
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17
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Extracellular nucleotides as novel, underappreciated pro-metastatic factors that stimulate purinergic signaling in human lung cancer cells. Mol Cancer 2015; 14:201. [PMID: 26597723 PMCID: PMC4657356 DOI: 10.1186/s12943-015-0469-z] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Accepted: 11/10/2015] [Indexed: 01/03/2023] Open
Abstract
Background One of the challenging problems of current radio-chemotherapy is recurrence and metastasis of cancer cells that survive initial treatment. We propose that one of the unwanted effects of radiochemotherapy is the release from damaged (“leaky”) cells of nucleotides such as ATP and UTP that exert pro-metastatic functions and can directly stimulate chemotaxis of cancer cells. Methods To address this problem in a model of human lung cancer (LC), we employed several complementary in vitro and in vivo approaches to demonstrate the role of extracellular nucleotides (EXNs) in LC cell line metastasis and tumor progression. We measured concentrations of EXNs in several organs before and after radiochemotherapy. The purinergic receptor agonists and antagonists, inhibiting all or selected subtypes of receptors, were employed in in vitro and in vivo pro-metastatic assays. Results We found that EXNs accumulate in several organs in response to radiochemotherapy, and RT-PCR analysis revealed that most of the P1 and P2 receptor subtypes are expressed in human LC cells. EXNs were found to induce chemotaxis and adhesion of LC cells, and an autocrine loop was identified that promotes the proliferation of LC cells. Most importantly, metastasis of these cells could be inhibited in immunodeficient mice in the presence of specific small molecule inhibitors of purinergic receptors. Conclusions Based on this result, EXNs are novel pro-metastatic factors released particularly during radiochemotherapy, and inhibition of their pro-metastatic effects via purinergic signaling could become an important part of anti-metastatic treatment. Electronic supplementary material The online version of this article (doi:10.1186/s12943-015-0469-z) contains supplementary material, which is available to authorized users.
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18
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Hiemstra PS. Parallel activities and interactions between antimicrobial peptides and complement in host defense at the airway epithelial surface. Mol Immunol 2015; 68:28-30. [DOI: 10.1016/j.molimm.2015.07.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 07/23/2015] [Accepted: 07/24/2015] [Indexed: 01/28/2023]
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19
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Stover CM. Editorial: Antimicrobial Peptides and Complement - Maximising the Inflammatory Response. Front Immunol 2015; 6:491. [PMID: 26441995 PMCID: PMC4585229 DOI: 10.3389/fimmu.2015.00491] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 09/08/2015] [Indexed: 12/11/2022] Open
Affiliation(s)
- Cordula M Stover
- Department of Infection, Immunity and Inflammation, College of Medicine, Biological Sciences and Psychology, University of Leicester , Leicester , UK
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20
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Esposito S, Garziano M, Rainone V, Trabattoni D, Biasin M, Senatore L, Marchisio P, Rossi M, Principi N, Clerici M. Immunomodulatory activity of pidotimod administered with standard antibiotic therapy in children hospitalized for community-acquired pneumonia. J Transl Med 2015; 13:288. [PMID: 26335787 PMCID: PMC4559022 DOI: 10.1186/s12967-015-0649-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 08/25/2015] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Several attempts to improve immune function in young children have been made and encouraging results have been collected with pidotimod (PDT), a synthetic dipeptide molecule that seems to have immunomodulatory activity on both innate and adaptive responses. Until now, the effects of PDT on the immune system have only been studied in vivo after long-term administration to evaluate whether its immunomodulatory activity might prevent the development of infections. This study was planned to evaluate the immunomodulatory activity of PDT administered together with standard antibiotic therapy in children hospitalized for community-acquired pneumonia (CAP). METHODS A total of 20 children hospitalized for community-acquired pneumonia (CAP) were randomized at a 1:1 ratio to receive either standard antibiotics plus pidotimod (PDT) or standard antibiotics alone to evaluate the immunomodulatory activity of PDT. Blood samples for the evaluation of immunological parameters were drawn at the time of recruitment (T0) (i.e., before therapy administration), at T3 and T5 (i.e., 3 and 5 days after the initiation of therapy) as well as at T21 (i.e., 7 days after the therapy ended). RESULTS Following pneumococcal polysaccharide stimulation, the percentage of dendritic cells (DCs) expressing activation and costimulatory molecules was significantly higher in children receiving PDT plus antibiotics than in the controls. A significant increase in tumor necrosis factor-α and/or interleukin-12 secretion and expression of toll like receptor 2 was observed in PDT-treated children compared with controls; this was followed by an increased release of proinflammatory cytokines by monocytes. In the PDT-treated group, mRNA expression of antimicrobial peptides and genes involved in the inflammatory response were also augmented in comparison with the controls. CONCLUSIONS These results demonstrate, for the first time, that PDT administered together with standard antibiotics is associated with a favorable persistent immunomodulatory effect in children with CAP.
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Affiliation(s)
- Susanna Esposito
- Pediatric Highly Intensive Care Unit, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via Commenda 9, 20122, Milan, Italy.
| | - Micaela Garziano
- Immunology Unit, Department of Biomedical and Clinical Sciences, Luigi Sacco Hospital, Università degli Studi di Milano, Milan, Italy.
| | - Veronica Rainone
- Immunology Unit, Department of Biomedical and Clinical Sciences, Luigi Sacco Hospital, Università degli Studi di Milano, Milan, Italy.
| | - Daria Trabattoni
- Immunology Unit, Department of Biomedical and Clinical Sciences, Luigi Sacco Hospital, Università degli Studi di Milano, Milan, Italy.
| | - Mara Biasin
- Immunology Unit, Department of Biomedical and Clinical Sciences, Luigi Sacco Hospital, Università degli Studi di Milano, Milan, Italy.
| | - Laura Senatore
- Pediatric Highly Intensive Care Unit, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via Commenda 9, 20122, Milan, Italy.
| | - Paola Marchisio
- Pediatric Highly Intensive Care Unit, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via Commenda 9, 20122, Milan, Italy.
| | - Marta Rossi
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy.
| | - Nicola Principi
- Pediatric Highly Intensive Care Unit, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via Commenda 9, 20122, Milan, Italy.
| | - Mario Clerici
- Department of Physiopathology and Transplantation, Università degli Studi di Milano, Milan, Italy. .,Don C. Gnocchi Foundation IRCCS, Milan, Italy.
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