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Dhurve G, Behera SR, Kodetham G, Siddavattam D. Outer membrane vesicles of Acinetobacter baumannii DS002 carry circular DNA similar to bovine meat and milk factors (BMMFs) and SPHINX 2.36 and probably play a role in interdomain lateral gene transfer. Microbiol Spectr 2024:e0081724. [PMID: 39101807 DOI: 10.1128/spectrum.00817-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 06/20/2024] [Indexed: 08/06/2024] Open
Abstract
The discovery of Replication Competent Circular DNA molecules in mammalian cells and tissues is being linked to debilitating diseases, such as multiple sclerosis (MS), bovine spongiform encephalopathy (BSE), and colorectal cancer (CRC). These circular DNA molecules, otherwise known as bovine meat and milk factors (BMMFs) and Slow Progressive Hidden INfections of variable (X) latency (SPHINX), bear significant (80%) sequence similarity with the plasmids of Acinetobacter baumannii strains. Nanostructures, such as bacterial outer membrane vesicles (OMVs) serve as vehicles for transporting biomolecular cargo and have the potential to facilitate interkingdom lateral mobility of DNA. Strengthening the proposed hypothesis, this study demonstrates that OMVs derived from A. baumannii DS002 carrying four plasmids and genome (pTS236) of phage, AbDs1, successfully reached different parts of the body, including the central nervous system, following the injection of fluorescein isothiocyanate (FITC)-labeled OMVs into experimental mice. Out of the four OMV-associated plasmids, three (pTS4586, pTS9900, and pTS134338) were identified within the lumen, and the fourth one (pTS11291) was found on the surface of OMVs. In addition to the indigenous plasmids, the phage-encoded protein, Orf96, anchored on the surface of the OMVs by establishing a strong interaction with the OMV-associated porin, OmpA. Intriguingly, a subset of labeled OMVs, when incubated with Neuro2A cells, translocated across the membrane and reached to the cytoplasmic space of the cells. Collectively, the experimental evidence presented herein underscores the promising potential of OMVs as vehicles for delivering molecular cargo containing plasmids and phage genomes to diverse mammalian tissues and cells. IMPORTANCE Several independent studies have demonstrated the existence of replication competent circular DNA molecules of bacterial and viral origin in mammalian cells and tissues. However, studies about their origin and lateral mobility to mammalian cells are scarce. Our work describes the existence of circular DNA, similar to that of DNA molecules identified in mammalian cells, OMVs derived from soil isolate of A. baumannii DS002. Furthermore, the work also provides visual evidence that demonstrates the passage of labeled OMVs to different organs of experimental mice within hours after intravenously administering OMVs into experimental mice. Some of the labeled OMVs have even crossed the membrane of Neuro2A, suggesting the existence of interkingdom horizontal mobility between bacteria and mammals.
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Affiliation(s)
- Ganeshwari Dhurve
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Sandhya Rani Behera
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Gopinath Kodetham
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Dayananda Siddavattam
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
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Habermann D, Franz CMAP, Klempt M. Current Research on Small Circular Molecules: A Comprehensive Overview on SPHINX/BMMF. Genes (Basel) 2024; 15:678. [PMID: 38927614 PMCID: PMC11202718 DOI: 10.3390/genes15060678] [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: 04/25/2024] [Revised: 05/19/2024] [Accepted: 05/20/2024] [Indexed: 06/28/2024] Open
Abstract
Several years of research into the small circular DNA molecules called SPHINX and BMMF (SPHINX/BMMF) have provided information on several areas of research, medicine, microbiology and nutritional science. But there are still open questions that have not yet been addressed. Due to the unclear classification, evolution and sources of SPHINX/BMMF, a risk assessment is currently not possible. However, risk assessment is necessary as SPHINX/BMMF are suspected to be involved in the development of cancer and neurodegenerative diseases. In order to obtain an overview of the current state of research and to identify research gaps, a review of all the publications on this topic to date was carried out. The focus was primarily on the SPHINX/BMMF group 1 and 2 members, which is the topic of most of the research. It was discovered that the SPHINX/BMMF molecules could be integral components of mammalian cells, and are also inherited. However, their involvement in neurodegenerative and carcinogenic diseases is still unclear. Furthermore, they are probably ubiquitous in food and they resemble bacterial plasmids in parts of their DNA and protein (Rep) sequence. In addition, a connection with bacterial viruses is also suspected. Ultimately, it is still unclear whether SPHINX/BMMF have an infectious capacity and what their host or target is.
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Affiliation(s)
- Diana Habermann
- Department of Microbiology and Biotechnology, Max Rubner-Institut, Federal Research Institute for Nutrition and Food, Hermann-Weigmann-Straße 1, 24103 Kiel, Germany; (C.M.A.P.F.); (M.K.)
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Nikitina E, Burk‐Körner A, Wiesenfarth M, Alwers E, Heide D, Tessmer C, Ernst C, Krunic D, Schrotz‐King P, Chang‐Claude J, von Winterfeld M, Herpel E, Brobeil A, Brenner H, Heikenwalder M, Hoffmeister M, Kopp‐Schneider A, Bund T. Bovine meat and milk factor protein expression in tumor-free mucosa of colorectal cancer patients coincides with macrophages and might interfere with patient survival. Mol Oncol 2024; 18:1076-1092. [PMID: 36811271 PMCID: PMC11076986 DOI: 10.1002/1878-0261.13390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 12/05/2022] [Accepted: 02/03/2023] [Indexed: 02/24/2023] Open
Abstract
Bovine milk and meat factors (BMMFs) are plasmid-like DNA molecules isolated from bovine milk and serum, as well as the peritumor of colorectal cancer (CRC) patients. BMMFs have been proposed as zoonotic infectious agents and drivers of indirect carcinogenesis of CRC, inducing chronic tissue inflammation, radical formation and increased levels of DNA damage. Data on expression of BMMFs in large clinical cohorts to test an association with co-markers and clinical parameters were not previously available and were therefore assessed in this study. Tissue sections with paired tumor-adjacent mucosa and tumor tissues of CRC patients [individual cohorts and tissue microarrays (TMAs) (n = 246)], low-/high-grade dysplasia (LGD/HGD) and mucosa of healthy donors were used for immunohistochemical quantification of the expression of BMMF replication protein (Rep) and CD68/CD163 (macrophages) by co-immunofluorescence microscopy and immunohistochemical scoring (TMA). Rep was expressed in the tumor-adjacent mucosa of 99% of CRC patients (TMA), was histologically associated with CD68+/CD163+ macrophages and was increased in CRC patients when compared to healthy controls. Tumor tissues showed only low stromal Rep expression. Rep was expressed in LGD and less in HGD but was strongly expressed in LGD/HGD-adjacent tissues. Albeit not reaching statistical significance, incidence curves for CRC-specific death were increased for higher Rep expression (TMA), with high tumor-adjacent Rep expression being linked to the highest incidence of death. BMMF Rep expression might represent a marker and early risk factor for CRC. The correlation between Rep and CD68 expression supports a previous hypothesis that BMMF-specific inflammatory regulations, including macrophages, are involved in the pathogenesis of CRC.
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Affiliation(s)
- Ekaterina Nikitina
- Division of Episomal‐persistent DNA in Cancer‐ and Chronic DiseasesGerman Cancer Research Center (DKFZ)HeidelbergGermany
| | - Amelie Burk‐Körner
- Division of Episomal‐persistent DNA in Cancer‐ and Chronic DiseasesGerman Cancer Research Center (DKFZ)HeidelbergGermany
| | - Manuel Wiesenfarth
- Division of BiostatisticsGerman Cancer Research Center (DKFZ)HeidelbergGermany
| | - Elizabeth Alwers
- Division of Clinical Epidemiology and Aging ResearchGerman Cancer Research Center (DKFZ)HeidelbergGermany
| | - Danijela Heide
- Division of Chronic Inflammation and CancerGerman Cancer Research Center (DKFZ)HeidelbergGermany
| | - Claudia Tessmer
- Monoclonal Antibody Unit of the Genomics and Proteomics Core FacilityGerman Cancer Research Center (DKFZ)HeidelbergGermany
| | - Claudia Ernst
- Division of Episomal‐persistent DNA in Cancer‐ and Chronic DiseasesGerman Cancer Research Center (DKFZ)HeidelbergGermany
| | - Damir Krunic
- Light Microscopy FacilityGerman Cancer Research Center (DKFZ)HeidelbergGermany
| | - Petra Schrotz‐King
- Division of Preventive OncologyGerman Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT)HeidelbergGermany
| | - Jenny Chang‐Claude
- Unit of Genetic EpidemiologyGerman Cancer Research Center (DKFZ)HeidelbergGermany
- Cancer Epidemiology Group, University Medical Center Hamburg‐EppendorfUniversity Cancer Center HamburgHamburgGermany
| | - Moritz von Winterfeld
- Institute of PathologyUniversity Hospital HeidelbergGermany
- Pathologie RosenheimGermany
| | - Esther Herpel
- Institute of PathologyUniversity Hospital HeidelbergGermany
- Tissue Bank of the National Center for Tumor Diseases (NCT) HeidelbergGermany
| | - Alexander Brobeil
- Institute of PathologyUniversity Hospital HeidelbergGermany
- Tissue Bank of the National Center for Tumor Diseases (NCT) HeidelbergGermany
| | - Hermann Brenner
- Division of Clinical Epidemiology and Aging ResearchGerman Cancer Research Center (DKFZ)HeidelbergGermany
- Division of Preventive OncologyGerman Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT)HeidelbergGermany
- German Cancer ConsortiumGerman Cancer Research CenterHeidelbergGermany
| | - Mathias Heikenwalder
- Division of Chronic Inflammation and CancerGerman Cancer Research Center (DKFZ)HeidelbergGermany
| | - Michael Hoffmeister
- Division of Clinical Epidemiology and Aging ResearchGerman Cancer Research Center (DKFZ)HeidelbergGermany
| | | | - Timo Bund
- Division of Episomal‐persistent DNA in Cancer‐ and Chronic DiseasesGerman Cancer Research Center (DKFZ)HeidelbergGermany
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Mobaraki G, Shi S, Smits KM, Severens K, Lommen K, Rennspiess D, Chteinberg E, Winnepenninckx V, Samarska I, Klufah F, zur Hausen A. Bovine Meat and Milk Factor-like Sequences Are Frequently Detected in Renal Cell Carcinoma Tissues. Cancers (Basel) 2024; 16:1746. [PMID: 38730698 PMCID: PMC11083248 DOI: 10.3390/cancers16091746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 04/14/2024] [Accepted: 04/18/2024] [Indexed: 05/13/2024] Open
Abstract
Previous studies have indicated a potential role of diet in the pathogenesis of renal cell carcinoma (RCC). Recently, circular bovine meat and milk factor (BMMF) DNAs have been identified in peritumoral tissues of human colon and breast cancers. Here, we investigated the prevalence of the DNA of these novel human pathogenic infectious agents in RCC and adjacent peritumoral renal tissues. DNA was extracted from formalin-fixed and paraffin-embedded (FFPE) RCC and peritumoral kidney tissues, including a test (n = 11) and a validation (n = 152) collection. BMMF1 and BMMF2 consensus primers were designed to screen for the presence of BMMF1- and BMMF2-like DNA. In addition, BMMF-specific PCR was performed on selected cases to test for the presence of additional regions of BMMF1 and BMMF2 genomes. A reference collection of hepatocellular carcinomas (HCCs; n = 60) and adjacent peritumoral liver tissues (n = 50) was also included. Our results demonstrated that BMMF1 and BMMF2 DNAs are frequently found in human RCC tissues and are particularly more prevalent in peritumoral kidney tissues. Of note, BMMF1 and BMMF2 genotype heterogeneity was higher in peritumoral kidney tissues compared to RCC tissues. This is the first study to directly test human FFPE tissues for BMMF1- and BMMF2-like DNA using consensus PCR and demonstrate BMMF DNA in neoplastic and peritumoral kidney tissues. The findings are in line with the recently proposed indirect etiopathogenetic role of BMMFs in, e.g., colorectal carcinogenesis. Follow-up studies are needed to explore the potential role of BMMFs in the etiopathogenesis of RCC.
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Affiliation(s)
- Ghalib Mobaraki
- Department of Pathology, GROW—Institute for Oncology & Reproduction, Maastricht University Medical Centre+, 6229 HX Maastricht, The Netherlands; (G.M.); (S.S.); (K.M.S.); (K.S.); (K.L.); (D.R.); (V.W.); (I.S.); (F.K.)
- Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Jazan University, Jazan 45142, Saudi Arabia
| | - Shuai Shi
- Department of Pathology, GROW—Institute for Oncology & Reproduction, Maastricht University Medical Centre+, 6229 HX Maastricht, The Netherlands; (G.M.); (S.S.); (K.M.S.); (K.S.); (K.L.); (D.R.); (V.W.); (I.S.); (F.K.)
| | - Kim M. Smits
- Department of Pathology, GROW—Institute for Oncology & Reproduction, Maastricht University Medical Centre+, 6229 HX Maastricht, The Netherlands; (G.M.); (S.S.); (K.M.S.); (K.S.); (K.L.); (D.R.); (V.W.); (I.S.); (F.K.)
| | - Kim Severens
- Department of Pathology, GROW—Institute for Oncology & Reproduction, Maastricht University Medical Centre+, 6229 HX Maastricht, The Netherlands; (G.M.); (S.S.); (K.M.S.); (K.S.); (K.L.); (D.R.); (V.W.); (I.S.); (F.K.)
| | - Kim Lommen
- Department of Pathology, GROW—Institute for Oncology & Reproduction, Maastricht University Medical Centre+, 6229 HX Maastricht, The Netherlands; (G.M.); (S.S.); (K.M.S.); (K.S.); (K.L.); (D.R.); (V.W.); (I.S.); (F.K.)
| | - Dorit Rennspiess
- Department of Pathology, GROW—Institute for Oncology & Reproduction, Maastricht University Medical Centre+, 6229 HX Maastricht, The Netherlands; (G.M.); (S.S.); (K.M.S.); (K.S.); (K.L.); (D.R.); (V.W.); (I.S.); (F.K.)
| | - Emil Chteinberg
- Institute of Human Genetics, Ulm University Medical Center, 89081 Ulm, Germany
| | - Véronique Winnepenninckx
- Department of Pathology, GROW—Institute for Oncology & Reproduction, Maastricht University Medical Centre+, 6229 HX Maastricht, The Netherlands; (G.M.); (S.S.); (K.M.S.); (K.S.); (K.L.); (D.R.); (V.W.); (I.S.); (F.K.)
| | - Iryna Samarska
- Department of Pathology, GROW—Institute for Oncology & Reproduction, Maastricht University Medical Centre+, 6229 HX Maastricht, The Netherlands; (G.M.); (S.S.); (K.M.S.); (K.S.); (K.L.); (D.R.); (V.W.); (I.S.); (F.K.)
| | - Faisal Klufah
- Department of Pathology, GROW—Institute for Oncology & Reproduction, Maastricht University Medical Centre+, 6229 HX Maastricht, The Netherlands; (G.M.); (S.S.); (K.M.S.); (K.S.); (K.L.); (D.R.); (V.W.); (I.S.); (F.K.)
- Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Al-Baha University, Al Baha 65528, Saudi Arabia
| | - Axel zur Hausen
- Department of Pathology, GROW—Institute for Oncology & Reproduction, Maastricht University Medical Centre+, 6229 HX Maastricht, The Netherlands; (G.M.); (S.S.); (K.M.S.); (K.S.); (K.L.); (D.R.); (V.W.); (I.S.); (F.K.)
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Dong D, Lv X, Jiang Q, Zhang J, Gu Z, Yu W, Han Z, Wang N, Hou W, Cheng Z. Multifunctional electrospun polycaprolactone/chitosan/hEGF/lidocaine nanofibers for the treatment of 2 stage pressure ulcers. Int J Biol Macromol 2024; 256:128533. [PMID: 38042313 DOI: 10.1016/j.ijbiomac.2023.128533] [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: 08/25/2023] [Revised: 11/29/2023] [Accepted: 11/29/2023] [Indexed: 12/04/2023]
Abstract
In this study, a multifunctional nanofiber dressing that can promote antibacterial, analgesic and healing was prepared by electrospinning technology. Hydrophobic polycaprolactone (PCL)/chitosan (CS)/lidocaine hydrochloride (LID) and epidermal growth factor (EGF) were used as scaffold materials and dissolved in trifluoroacetic acid to prepare spinning solution. The morphology of PCEL dressing was observed by scanning electron microscopy. The fiber structure was dense and the average diameter was 297.0 nm. The water absorption capacity test and water contact angle measurement showed that the fiber had good water absorption and hydrophilicity (1302 %, 139.258°). Drug release was 84 % within 60 h. In the results of antibacterial experiment, the dressing showed certain antibacterial properties. The results of cell experiments show that the dressing can promote cell proliferation. In addition, coagulation experiments showed that the dressing could quickly coagulate the blood within 4 min. In addition, PCEL dressing promoted collagen deposition and vascularization through animal models of pressure sores. Therefore, multifunctional dressing can be used as an ideal auxiliary means for the treatment of pressure sores, and it is a promising alternative to chronic wound healing.
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Affiliation(s)
- Dongxing Dong
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, People's Republic of China; Scientific and Technological Innovation Center of Health Products and Medical Materials with Characteristic Resources of Jilin Province, Changchun 130118, People's Republic of China
| | - Xiaoli Lv
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, People's Republic of China; Scientific and Technological Innovation Center of Health Products and Medical Materials with Characteristic Resources of Jilin Province, Changchun 130118, People's Republic of China.
| | - Qiushi Jiang
- State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xianning West Road, Xi'an 710049, People's Republic of China
| | - Jingjing Zhang
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, People's Republic of China; Scientific and Technological Innovation Center of Health Products and Medical Materials with Characteristic Resources of Jilin Province, Changchun 130118, People's Republic of China
| | - Zhengyi Gu
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, People's Republic of China
| | - Weimin Yu
- Scientific and Technological Innovation Center of Health Products and Medical Materials with Characteristic Resources of Jilin Province, Changchun 130118, People's Republic of China
| | - Zhaolian Han
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, People's Republic of China; Scientific and Technological Innovation Center of Health Products and Medical Materials with Characteristic Resources of Jilin Province, Changchun 130118, People's Republic of China
| | - Ning Wang
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, People's Republic of China; Scientific and Technological Innovation Center of Health Products and Medical Materials with Characteristic Resources of Jilin Province, Changchun 130118, People's Republic of China
| | - Wenli Hou
- Department of Cadre Ward, the First Hospital of Jilin University, 71 Xinmin Street, Chaoyang, Changchun 130021, People's Republic of China.
| | - Zhiqiang Cheng
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, People's Republic of China; Scientific and Technological Innovation Center of Health Products and Medical Materials with Characteristic Resources of Jilin Province, Changchun 130118, People's Republic of China
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Zhang H, Wu J, Li N, Wu R, Chen W. Microbial influence on triggering and treatment of host cancer: An intestinal barrier perspective. Biochim Biophys Acta Rev Cancer 2023; 1878:188989. [PMID: 37742727 DOI: 10.1016/j.bbcan.2023.188989] [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: 03/19/2023] [Revised: 09/14/2023] [Accepted: 09/14/2023] [Indexed: 09/26/2023]
Abstract
Inflammatory bowel disease (IBD) is associated with complex complications that may lead to tumors. However, research on the mechanisms underlying susceptibility to chronic immune diseases and cancer pathogenesis triggered by the inflammatory environment remains limited. An imbalance in the host gut microbiota often accompanies intestinal inflammation. The delayed recovery of the dysregulated intestinal microbiota may exacerbate systemic inflammatory responses, multiorgan pathology, and metabolic disorders. This delay may also facilitate bacterial translocation. This review examined the relationship between gut barrier disruption and unbalanced microbial translocation and their impact on the brain, liver, and lungs. We also explored their potential roles in tumor initiation. Notably, the role of the intestinal microbiota in the development of inflammation is linked to the immune surveillance function of the small intestine and the repair status of the intestinal barrier. Moreover, adherence to a partially anti-inflammatory diet can aid in preventing the malignant transformation of inflammation by repairing the intestinal barrier and significantly reducing inflammation. In conclusion, enhancing intestinal barrier function may be a novel strategy for preventing and treating chronic malignancies in the intestine and other body areas.
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Affiliation(s)
- Henan Zhang
- College of Food Science, Shenyang Agricultural University, Shenyang 110866, PR China; Engineering Research Center of Food Fermentation Technology, Shenyang 110161, PR China
| | - Junrui Wu
- College of Food Science, Shenyang Agricultural University, Shenyang 110866, PR China; Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Liaoning 110866, PR China
| | - Na Li
- Children's Neurorehabilitation Laboratory, Shenyang Children's Hospital, Shenyang, PR China
| | - Rina Wu
- College of Food Science, Shenyang Agricultural University, Shenyang 110866, PR China; Engineering Research Center of Food Fermentation Technology, Shenyang 110161, PR China.
| | - Wei Chen
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.
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König MT, Frölich K, Jandowsky A, Knauf-Witzens T, Langner C, Dietrich R, Märtlbauer E, Didier A. First Insights into the Occurrence of Circular Single-Stranded DNA Genomes in Asian and African Cattle. Animals (Basel) 2023; 13:ani13091492. [PMID: 37174530 PMCID: PMC10177065 DOI: 10.3390/ani13091492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/21/2023] [Accepted: 04/23/2023] [Indexed: 05/15/2023] Open
Abstract
Circular replicase-encoding single-stranded (CRESS) DNA viruses and other circular DNA agents are increasingly found in various samples and animals. A specific class of these agents-termed bovine meat and milk factors (BMMF)-has been supposed to act as a factor in indirect carcinogenesis in humans. Initial observations attributed the BMMF to European cattle breeds and foodstuffs produced thereof. In the present study, blood and fecal samples from African and Asian cattle were examined. BMMF molecules and genomoviruses were detected in all bovids under study. The majority (79%) of the 29 circular elements could be assigned to BMMF groups 1 and 2, whereas CRESS viruses of the family Genomoviridae accounted for the smaller part (21%). Two genomoviruses belong to the genus Gemykibivirus and one to the genus Gemykrogvirus. The remaining three might be considered as novel species within the genus Gemycircularvirus. The majority of all isolated molecules originated from fecal samples, whereas only three derived from blood. The results from this study expand our knowledge on the diversity and presence of circular DNA in different ruminants that serve for food production in many countries over the world.
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Affiliation(s)
- Marie-Thérèse König
- Department of Veterinary Sciences, Institute of Food Science, Faculty of Veterinary Medicine, Ludwig-Maximilians-Universität München, Schönleutnerstraße 8, 85764 Oberschleißheim, Germany
| | - Kai Frölich
- Tierpark Arche Warder, Zentrum für Seltene Nutztierrassen e. V., Langwedeler Weg 11, 24646 Warder, Germany
| | - Anabell Jandowsky
- Tierpark Arche Warder, Zentrum für Seltene Nutztierrassen e. V., Langwedeler Weg 11, 24646 Warder, Germany
| | - Tobias Knauf-Witzens
- Wilhelma Zoological-Botanical Gardens Stuttgart, Wilhelma 13, 70376 Stuttgart, Germany
| | - Christoph Langner
- Stralsund Zoological Garden, Grünhufer Bogen 2, 18437 Stralsund, Germany
| | - Richard Dietrich
- Department of Veterinary Sciences, Institute of Food Science, Faculty of Veterinary Medicine, Ludwig-Maximilians-Universität München, Schönleutnerstraße 8, 85764 Oberschleißheim, Germany
| | - Erwin Märtlbauer
- Department of Veterinary Sciences, Institute of Food Science, Faculty of Veterinary Medicine, Ludwig-Maximilians-Universität München, Schönleutnerstraße 8, 85764 Oberschleißheim, Germany
| | - Andrea Didier
- Department of Veterinary Sciences, Institute of Food Science, Faculty of Veterinary Medicine, Ludwig-Maximilians-Universität München, Schönleutnerstraße 8, 85764 Oberschleißheim, Germany
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Melnik BC, Stadler R, Weiskirchen R, Leitzmann C, Schmitz G. Potential Pathogenic Impact of Cow’s Milk Consumption and Bovine Milk-Derived Exosomal MicroRNAs in Diffuse Large B-Cell Lymphoma. Int J Mol Sci 2023; 24:ijms24076102. [PMID: 37047075 PMCID: PMC10094152 DOI: 10.3390/ijms24076102] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/05/2023] [Accepted: 03/16/2023] [Indexed: 03/29/2023] Open
Abstract
Epidemiological evidence supports an association between cow’s milk consumption and the risk of diffuse large B-cell lymphoma (DLBCL), the most common non-Hodgkin lymphoma worldwide. This narrative review intends to elucidate the potential impact of milk-related agents, predominantly milk-derived exosomes (MDEs) and their microRNAs (miRs) in lymphomagenesis. Upregulation of PI3K-AKT-mTORC1 signaling is a common feature of DLBCL. Increased expression of B cell lymphoma 6 (BCL6) and suppression of B lymphocyte-induced maturation protein 1 (BLIMP1)/PR domain-containing protein 1 (PRDM1) are crucial pathological deviations in DLBCL. Translational evidence indicates that during the breastfeeding period, human MDE miRs support B cell proliferation via epigenetic upregulation of BCL6 (via miR-148a-3p-mediated suppression of DNA methyltransferase 1 (DNMT1) and miR-155-5p/miR-29b-5p-mediated suppression of activation-induced cytidine deaminase (AICDA) and suppression of BLIMP1 (via MDE let-7-5p/miR-125b-5p-targeting of PRDM1). After weaning with the physiological termination of MDE miR signaling, the infant’s BCL6 expression and B cell proliferation declines, whereas BLIMP1-mediated B cell maturation for adequate own antibody production rises. Because human and bovine MDE miRs share identical nucleotide sequences, the consumption of pasteurized cow’s milk in adults with the continued transfer of bioactive bovine MDE miRs may de-differentiate B cells back to the neonatal “proliferation-dominated” B cell phenotype maintaining an increased BLC6/BLIMP1 ratio. Persistent milk-induced epigenetic dysregulation of BCL6 and BLIMP1 expression may thus represent a novel driving mechanism in B cell lymphomagenesis. Bovine MDEs and their miR cargo have to be considered potential pathogens that should be removed from the human food chain.
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Li L, Yao ZC, Parian A, Yang YH, Chao J, Yin J, Salimian KJ, Reddy SK, Zaheer A, Gearhart SL, Mao HQ, Selaru FM. A nanofiber-hydrogel composite improves tissue repair in a rat model of Crohn's disease perianal fistulas. SCIENCE ADVANCES 2023; 9:eade1067. [PMID: 36598982 PMCID: PMC9812382 DOI: 10.1126/sciadv.ade1067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Perianal fistulas (PAFs) represent a severe complication of Crohn's disease (CD). Despite the advent of biologic and small-molecule therapeutics for luminal disease, PAFs in CD (CD-PAF) are relatively resistant to treatment, with less than 50% responding to any therapy. We report an injectable, biodegradable, mechanically fragmented nanofiber-hydrogel composite (mfNHC) loaded with adipose-derived stem cells (ADSCs) for the treatment of fistulas in a rat model of CD-PAF. The ADSC-loaded mfNHC results in a higher degree of healing when compared to surgical treatment of fistulas, which is a standard treatment. The volume of fistulas treated with mfNHC is decreased sixfold compared to the surgical treatment control. Molecular studies reveal that utilization of mfNHC reduced local inflammation and improved tissue regeneration. This study demonstrates that ADSC-loaded mfNHC is a promising therapy for CD-PAF, and warrants further studies to advance mfNHC toward clinical translation.
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Affiliation(s)
- Ling Li
- Division of Gastroenterology and Hepatology, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Zhi-Cheng Yao
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, USA
- Department of Materials Science and Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, USA
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Alyssa Parian
- Division of Gastroenterology and Hepatology, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Yueh-Hsun Yang
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, USA
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Plastic and Reconstructive Surgery, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Jeffrey Chao
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, USA
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Public Health Studies, Krieger School of Arts and Sciences, Johns Hopkins University, Baltimore, MD, USA
| | - Jason Yin
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, USA
- Department of Materials Science and Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, USA
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Kevan J. Salimian
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Sashank K. Reddy
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, USA
- Department of Plastic and Reconstructive Surgery, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Atif Zaheer
- Division of Radiology and Radiological Sciences, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Susan L. Gearhart
- Division of Colorectal Surgery, Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Hai-Quan Mao
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, USA
- Department of Materials Science and Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, USA
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Florin M. Selaru
- Division of Gastroenterology and Hepatology, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
- Department of Oncology, Sidney Kimmel Cancer Center, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
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10
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Yao ZC, Yang YH, Kong J, Zhu Y, Li L, Chang C, Zhang C, Yin J, Chao J, Selaru FM, Reddy SK, Mao HQ. Biostimulatory Micro-Fragmented Nanofiber-Hydrogel Composite Improves Mesenchymal Stem Cell Delivery and Soft Tissue Remodeling. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2202309. [PMID: 35948487 PMCID: PMC9994419 DOI: 10.1002/smll.202202309] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Functional microgels are preferred stem cell carriers due to the ease of delivery through minimally invasive injection and seamless integration with the surrounding host tissue. A biostimulatory nanofiber-hydrogel composite (NHC) has been previously developed through covalently crosslinking a hyaluronic acid hydrogel network with surface-functionalized poly (ε-caprolactone) nanofiber fragments. The NHC mimics the microarchitecture of native soft tissue matrix, showing enhanced cell infiltration, immunomodulation, and proangiogenic properties. Here, injectability of the pre-formed NHC is improved by mechanical fragmentation, making it into micro-fragmented NHC (mfNHC) in a granular gel form as a stem cell carrier to deliver mesenchymal stem cells (MSCs) for soft tissue remodeling. The mfNHC shows a similar storage modulus but a significantly reduced injection force, as compared with the corresponding bulk NHC. When injected subcutaneously in a rat model, mfNHC-MSC constructs initiate an elevated level of host macrophage infiltration, more pro-regenerative polarization, and subsequently, improved angiogenesis and adipogenesis response when compared to mfNHC alone. A similar trend of host cell infiltration and pro-angiogenic response is detected in a swine model with a larger volume injection. These results suggest a strong potential for use of the mfNHC as an injectable carrier for cell delivery and soft tissue remodeling.
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Affiliation(s)
- Zhi-Cheng Yao
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21213, USA
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Yueh-Hsun Yang
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21213, USA
- Department of Plastic and Reconstructive Surgery, Johns Hopkins School of Medicine, Baltimore, MD, 21287, USA
| | - Jiayuan Kong
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21213, USA
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Yining Zhu
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21213, USA
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Ling Li
- Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Calvin Chang
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21213, USA
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Chi Zhang
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21213, USA
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Jason Yin
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21213, USA
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Jeffrey Chao
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21213, USA
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
- Department of Public Health Studies, Krieger School of Arts and Sciences, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Florin M Selaru
- Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Sashank K Reddy
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
- Department of Plastic and Reconstructive Surgery, Johns Hopkins School of Medicine, Baltimore, MD, 21287, USA
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Hai-Quan Mao
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21213, USA
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
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11
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Alt KW, Al-Ahmad A, Woelber JP. Nutrition and Health in Human Evolution–Past to Present. Nutrients 2022; 14:nu14173594. [PMID: 36079850 PMCID: PMC9460423 DOI: 10.3390/nu14173594] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/25/2022] [Accepted: 08/26/2022] [Indexed: 11/23/2022] Open
Abstract
Anyone who wants to understand the biological nature of humans and their special characteristics must look far back into evolutionary history. Today’s way of life is drastically different from that of our ancestors. For almost 99% of human history, gathering and hunting have been the basis of nutrition. It was not until about 12,000 years ago that humans began domesticating plants and animals. Bioarchaeologically and biochemically, this can be traced back to our earliest roots. Modern living conditions and the quality of human life are better today than ever before. However, neither physically nor psychosocially have we made this adjustment and we are paying a high health price for it. The studies presented allow us to reconstruct food supply, lifestyles, and dietary habits: from the earliest primates, through hunter-gatherers of the Paleolithic, farming communities since the beginning of the Anthropocene, to the Industrial Age and the present. The comprehensive data pool allows extraction of all findings of medical relevance. Our recent lifestyle and diet are essentially determined by our culture rather than by our millions of years of ancestry. Culture is permanently in a dominant position compared to natural evolution. Thereby culture does not form a contrast to nature but represents its result. There is no doubt that we are biologically adapted to culture, but it is questionable how much culture humans can cope with.
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Affiliation(s)
- Kurt W. Alt
- Center of Natural and Cultural Human History, Danube Private University, 3500 Krems, Austria
- Integrative Prehistory and Archaeological Science, University of Basel, 4055 Basel, Switzerland
- Correspondence:
| | - Ali Al-Ahmad
- Department of Operative Dentistry and Periodontology, Faculty of Medicine, University of Freiburg, 71906 Freiburg, Germany
| | - Johan Peter Woelber
- Department of Operative Dentistry and Periodontology, Faculty of Medicine, University of Freiburg, 71906 Freiburg, Germany
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12
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Golan N, Engelberg Y, Landau M. Structural Mimicry in Microbial and Antimicrobial Amyloids. Annu Rev Biochem 2022; 91:403-422. [PMID: 35729071 DOI: 10.1146/annurev-biochem-032620-105157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The remarkable variety of microbial species of human pathogens and microbiomes generates significant quantities of secreted amyloids, which are structured protein fibrils that serve diverse functions related to virulence and interactions with the host. Human amyloids are associated largely with fatal neurodegenerative and systemic aggregation diseases, and current research has put forward the hypothesis that the interspecies amyloid interactome has physiological and pathological significance. Moreover, functional and molecular-level connections between antimicrobial activity and amyloid structures suggest a neuroimmune role for amyloids that are otherwise known to be pathological. Compared to the extensive structural information that has been accumulated for human amyloids, high-resolution structures of microbial and antimicrobial amyloids are only emerging. These recent structures reveal both similarities and surprising departures from the typical amyloid motif, in accordance with their diverse activities, and advance the discovery of novel antivirulence and antimicrobial agents. In addition, the structural information has led researchers to postulate that amyloidogenic sequences are natural targets for structural mimicry, for instance in host-microbe interactions. Microbial amyloid research could ultimately be used to fight aggressive infections and possibly processes leading to autoimmune and neurodegenerative diseases.
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Affiliation(s)
- Nimrod Golan
- Department of Biology, Technion-Israel Institute of Technology, Haifa, Israel;
| | - Yizhaq Engelberg
- Department of Biology, Technion-Israel Institute of Technology, Haifa, Israel;
| | - Meytal Landau
- Department of Biology, Technion-Israel Institute of Technology, Haifa, Israel; .,European Molecular Biology Laboratory (EMBL) and Center for Structural Systems Biology (CSSB), Hamburg, Germany
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13
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Vendrell-Fernández S, Lozano-Picazo P, Cuadros-Sánchez P, Tejero-Ojeda MM, Giraldo R. Conversion of the OmpF Porin into a Device to Gather Amyloids on the E. coli Outer Membrane. ACS Synth Biol 2022; 11:655-667. [PMID: 34852197 DOI: 10.1021/acssynbio.1c00347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Protein amyloids are ubiquitous in natural environments. They typically originate from microbial secretions or spillages from mammals infected by prions, currently raising concerns about their infectivity and toxicity in contexts such as gut microbiota or soils. Exploiting the self-assembly potential of amyloids for their scavenging, here, we report the insertion of an amyloidogenic sequence stretch from a bacterial prion-like protein (RepA-WH1) in one of the extracellular loops (L5) of the abundant Escherichia coli outer membrane porin OmpF. The expression of this grafted porin enables bacterial cells to trap on their envelopes the same amyloidogenic sequence when provided as an extracellular free peptide. Conversely, when immobilized on a surface as bait, the full-length prion-like protein including the amyloidogenic peptide can catch bacteria displaying the L5-grafted OmpF. Polyphenolic molecules known to inhibit amyloid assembly interfere with peptide recognition by the engineered OmpF, indicating that this is compatible with the kind of homotypic interactions expected for amyloid assembly. Our study suggests that synthetic porins may provide suitable scaffolds for engineering biosensor and clearance devices to tackle the threat posed by pathogenic amyloids.
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Affiliation(s)
- Sol Vendrell-Fernández
- Department of Microbial Biotechnology, National Centre for Biotechnology (CSIC), c/ Darwin 3, Campus Cantoblanco, 28049 Madrid, Spain
| | - Paloma Lozano-Picazo
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas (CSIC), c/ Ramiro de Maeztu 9, Campus Moncloa, 28040 Madrid, Spain
| | - Paula Cuadros-Sánchez
- Department of Microbial Biotechnology, National Centre for Biotechnology (CSIC), c/ Darwin 3, Campus Cantoblanco, 28049 Madrid, Spain
| | - María M. Tejero-Ojeda
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas (CSIC), c/ Ramiro de Maeztu 9, Campus Moncloa, 28040 Madrid, Spain
| | - Rafael Giraldo
- Department of Microbial Biotechnology, National Centre for Biotechnology (CSIC), c/ Darwin 3, Campus Cantoblanco, 28049 Madrid, Spain
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas (CSIC), c/ Ramiro de Maeztu 9, Campus Moncloa, 28040 Madrid, Spain
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14
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de Villiers EM, zur Hausen H. Bovine Meat and Milk Factors (BMMFs): Their Proposed Role in Common Human Cancers and Type 2 Diabetes Mellitus. Cancers (Basel) 2021; 13:cancers13215407. [PMID: 34771570 PMCID: PMC8582480 DOI: 10.3390/cancers13215407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/24/2021] [Accepted: 10/25/2021] [Indexed: 12/16/2022] Open
Abstract
Simple Summary This manuscript emphasizes the mechanistic differences of infectious agents contributing to human cancers either by “direct” or “indirect” interactions. The epidemiology of cancers linked to direct carcinogens differs (e.g., response to immunosuppression) from those cancers linked with indirect infectious interactions. We discuss their role in colon, breast, and prostate cancers and type II diabetes mellitus. A brief discussion covers the potential role of BMMF (bovine meat and milk factor) infections in acute myeloid leukemia. Abstract Exemplified by infections with bovine meat and milk factors (BMMFs), this manuscript emphasizes the different mechanistic aspects of infectious agents contributing to human cancers by “direct” or “indirect” interactions. The epidemiology of cancers linked to direct carcinogens (e.g., response to immunosuppression) differs from those cancers linked with indirect infectious interactions. Cancers induced by direct infectious carcinogens commonly increase under immunosuppression, whereas the cancer risk by indirect carcinogens is reduced. This influences their responses to preventive and therapeutic interferences. In addition, we discuss their role in colon, breast and prostate cancers and type II diabetes mellitus. A brief discussion covers the potential role of BMMF infections in acute myeloid leukemia.
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Affiliation(s)
- Ethel-Michele de Villiers
- Correspondence: (E.-M.d.V.); (H.z.H.); Tel.: +49-151-4312-3085 (E.-M.d.V.); +49-6221-423850 (H.z.H.)
| | - Harald zur Hausen
- Correspondence: (E.-M.d.V.); (H.z.H.); Tel.: +49-151-4312-3085 (E.-M.d.V.); +49-6221-423850 (H.z.H.)
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15
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Identification and Characterization of Circular Single-Stranded DNA Genomes in Sheep and Goat Milk. Viruses 2021; 13:v13112176. [PMID: 34834982 PMCID: PMC8621823 DOI: 10.3390/v13112176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 10/26/2021] [Accepted: 10/27/2021] [Indexed: 12/21/2022] Open
Abstract
In recent years, a variety of circular replicase-encoding single-stranded (CRESS) DNA viruses and unclassified virus-like DNA elements have been discovered in a broad range of animal species and environmental samples. Key questions to be answered concern their presence in the human diet and their potential impact on disease emergence. Especially DNA elements termed bovine meat and milk factors (BMMF) are suspected to act as co-factors in the development of colon and breast cancer. To expand our knowledge on the occurrence of these potential pathogens in human nutrition, a total of 73 sheep and 40 goat milk samples were assayed by combining rolling circle amplification (RCA), PCR and Sanger sequencing. The present study further includes retail milk from the aforementioned species. We recovered 15 single stranded (ss) circular genomes. Of those, nine belong to the family Genomoviridae and six are members of the unclassified group of BMMF. Thus, dairy sheep and goats add to dispersal of CRESS viruses and circular ssDNA elements, which enter the food chain via milk. The presence of these entities is therefore more widespread in Bovidae than initially assumed and seems to be part of the common human nutrition.
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16
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Marongiu L, Allgayer H. Viruses in colorectal cancer. Mol Oncol 2021; 16:1423-1450. [PMID: 34514694 PMCID: PMC8978519 DOI: 10.1002/1878-0261.13100] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/15/2021] [Accepted: 09/10/2021] [Indexed: 12/23/2022] Open
Abstract
Increasing evidence suggests that microorganisms might represent at least highly interesting cofactors in colorectal cancer (CRC) oncogenesis and progression. Still, associated mechanisms, specifically in colonocytes and their microenvironmental interactions, are still poorly understood. Although, currently, at least seven viruses are being recognized as human carcinogens, only three of these – Epstein–Barr virus (EBV), human papillomavirus (HPV) and John Cunningham virus (JCV) – have been described, with varying levels of evidence, in CRC. In addition, cytomegalovirus (CMV) has been associated with CRC in some publications, albeit not being a fully acknowledged oncovirus. Moreover, recent microbiome studies set increasing grounds for new hypotheses on bacteriophages as interesting additional modulators in CRC carcinogenesis and progression. The present Review summarizes how particular groups of viruses, including bacteriophages, affect cells and the cellular and microbial microenvironment, thereby putatively contributing to foster CRC. This could be achieved, for example, by promoting several processes – such as DNA damage, chromosomal instability, or molecular aspects of cell proliferation, CRC progression and metastasis – not necessarily by direct infection of epithelial cells only, but also by interaction with the microenvironment of infected cells. In this context, there are striking common features of EBV, CMV, HPV and JCV that are able to promote oncogenesis, in terms of establishing latent infections and affecting p53‐/pRb‐driven, epithelial–mesenchymal transition (EMT)‐/EGFR‐associated and especially Wnt/β‐catenin‐driven pathways. We speculate that, at least in part, such viral impacts on particular pathways might be reflected in lasting (e.g. mutational or further genomic) fingerprints of viruses in cells. Also, the complex interplay between several species within the intestinal microbiome, involving a direct or indirect impact on colorectal and microenvironmental cells but also between, for example, phages and bacterial and viral pathogens, and further novel species certainly might, in part, explain ongoing difficulties to establish unequivocal monocausal links between specific viral infections and CRC.
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Affiliation(s)
- Luigi Marongiu
- Department of Experimental Surgery - Cancer Metastasis, Medical Faculty Mannheim, Ruprecht-Karls-University of Heidelberg, Mannheim, Germany
| | - Heike Allgayer
- Department of Experimental Surgery - Cancer Metastasis, Medical Faculty Mannheim, Ruprecht-Karls-University of Heidelberg, Mannheim, Germany
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17
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Circular Rep-Encoding Single-Stranded DNA Sequences in Milk from Water Buffaloes ( Bubalus arnee f. bubalis). Viruses 2021; 13:v13061088. [PMID: 34200389 PMCID: PMC8228113 DOI: 10.3390/v13061088] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 05/26/2021] [Accepted: 06/03/2021] [Indexed: 02/06/2023] Open
Abstract
Isolation and characterization of circular replicase-encoding single-stranded (ss) DNA from animal, plant and environmental samples are rapidly evolving in virology. We detected 21 circular DNA elements, including one genomoviral sequence, in individual milk samples from domesticated Asian water buffaloes (Bubalus arnee f. bubalis). Most of the obtained genomes are related to Sphinx 1.76 and Sphinx 2.36 sequences and share a high degree of similarity to recently published circular DNAs—named BMMF (bovine meat and milk factors)—that have been isolated from commercial milk, as well as from bovine serum. Characteristic features such as rep genes, tandem repeats and inverted repeats were detected. These BMMF have recently been found to be present in taurine-type dairy cattle breeds descending from the aurochs (Bos primigenius). Importantly, the occurrence of BMMF has been linked to the higher incidence of colorectal and breast cancer in North America and Western Europe compared with Asia. This is the first report of circular ssDNA detected in milk from the domesticated form of the wild Asian water buffalo (B. arnee) belonging to the subfamily Bovinae. This novelty should be taken into account in view of the above-mentioned cancer hypothesis.
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18
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Melnik BC, Stremmel W, Weiskirchen R, John SM, Schmitz G. Exosome-Derived MicroRNAs of Human Milk and Their Effects on Infant Health and Development. Biomolecules 2021; 11:biom11060851. [PMID: 34200323 PMCID: PMC8228670 DOI: 10.3390/biom11060851] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 05/29/2021] [Accepted: 06/01/2021] [Indexed: 11/16/2022] Open
Abstract
Multiple biologically active components of human milk support infant growth, health and development. Milk provides a wide spectrum of mammary epithelial cell-derived extracellular vesicles (MEVs) for the infant. Although the whole spectrum of MEVs appears to be of functional importance for the growing infant, the majority of recent studies report on the MEV subfraction of milk exosomes (MEX) and their miRNA cargo, which are in the focus of this review. MEX and the dominant miRNA-148a play a key role in intestinal maturation, barrier function and suppression of nuclear factor-κB (NF-κB) signaling and may thus be helpful for the prevention and treatment of necrotizing enterocolitis. MEX and their miRNAs reach the systemic circulation and may impact epigenetic programming of various organs including the liver, thymus, brain, pancreatic islets, beige, brown and white adipose tissue as well as bones. Translational evidence indicates that MEX and their miRNAs control the expression of global cellular regulators such as DNA methyltransferase 1-which is important for the up-regulation of developmental genes including insulin, insulin-like growth factor-1, α-synuclein and forkhead box P3-and receptor-interacting protein 140, which is important for the regulation of multiple nuclear receptors. MEX-derived miRNA-148a and miRNA-30b may stimulate the expression of uncoupling protein 1, the key inducer of thermogenesis converting white into beige/brown adipose tissue. MEX have to be considered as signalosomes derived from the maternal lactation genome emitted to promote growth, maturation, immunological and metabolic programming of the offspring. Deeper insights into milk's molecular biology allow the conclusion that infants are both "breast-fed" and "breast-programmed". In this regard, MEX miRNA-deficient artificial formula is not an adequate substitute for breastfeeding, the birthright of all mammals.
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Affiliation(s)
- Bodo C. Melnik
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, D-49076 Osnabrück, Germany;
- Correspondence: ; Tel.: +49-5241-988060
| | - Wolfgang Stremmel
- Private Praxis for Internal Medicine, Beethovenstraße 2, D-76530 Baden-Baden, Germany;
| | - Ralf Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), RWTH University Hospital Aachen, D-52074 Aachen, Germany;
| | - Swen Malte John
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, D-49076 Osnabrück, Germany;
- Institute for Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm), University of Osnabrück, D-49076 Osnabrück, Germany
| | - Gerd Schmitz
- Institute for Clinical Chemistry and Laboratory Medicine, University Hospital of Regensburg, University of Regensburg, D-93053 Regensburg, Germany;
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