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Leija-Montoya AG, González-Ramírez J, Martínez-Coronilla G, Mejía-León ME, Isiordia-Espinoza M, Sánchez-Muñoz F, Chávez-Cortez EG, Pitones-Rubio V, Serafín-Higuera N. Roles of microRNAs and Long Non-Coding RNAs Encoded by Parasitic Helminths in Human Carcinogenesis. Int J Mol Sci 2022; 23:ijms23158173. [PMID: 35897749 PMCID: PMC9331937 DOI: 10.3390/ijms23158173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 07/15/2022] [Accepted: 07/21/2022] [Indexed: 12/14/2022] Open
Abstract
Infectious agents such as viruses, bacteria, and parasites can lead to cancer development. Infection with the helminthic parasite Schistosoma haematobium can cause cancer of the urinary bladder in humans, and infection with the parasites Clonorchis sinensis and Opisthorchis viverrini can promote cholangiocarcinoma. These three pathogens have been categorized as “group 1: carcinogenic to humans” by the International Agency for Research on Cancer (IARC). Additionally, the parasite Schistosoma japonicum has been associated with liver and colorectal cancer and classified as “group 2B: possibly carcinogenic to humans”. These parasites express regulatory non-coding RNAs as microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), which modulate genic expression in different biological processes. In this review, we discuss the potential roles of miRNAS and lncRNAs encoded by helminthic parasites that are classified by the IARC as carcinogenic and possibly carcinogenic to humans. The miRNAs of these parasites may be involved in carcinogenesis by modulating the biological functions of the pathogen and the host and by altering microenvironments prone to tumor growth. miRNAs were identified in different host fluids. Additionally, some miRNAs showed direct antitumoral effects. Together, these miRNAs show potential for use in future therapeutic and diagnostic applications. LncRNAs have been less studied in these parasites, and their biological effects in the parasite–host interaction are largely unknown.
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Affiliation(s)
- Ana Gabriela Leija-Montoya
- Facultad de Medicina Mexicali, Universidad Autónoma de Baja California, Centro Cívico, Mexicali 21000, BC, Mexico; (A.G.L.-M.); (G.M.-C.); (M.E.M.-L.)
| | - Javier González-Ramírez
- Facultad de Enfermería, Universidad Autónoma de Baja California, Av. Álvaro Obregón y Calle “G” S/N, Col. Nueva, Mexicali 21100, BC, Mexico;
| | - Gustavo Martínez-Coronilla
- Facultad de Medicina Mexicali, Universidad Autónoma de Baja California, Centro Cívico, Mexicali 21000, BC, Mexico; (A.G.L.-M.); (G.M.-C.); (M.E.M.-L.)
| | - María Esther Mejía-León
- Facultad de Medicina Mexicali, Universidad Autónoma de Baja California, Centro Cívico, Mexicali 21000, BC, Mexico; (A.G.L.-M.); (G.M.-C.); (M.E.M.-L.)
| | - Mario Isiordia-Espinoza
- Instituto de Investigación en Ciencias Médicas, Departamento de Clínicas, División de Ciencias Biomédicas, Centro Universitario de Los Altos, Universidad de Guadalajara, Av. Rafael Casillas Aceves 1200, Tepatitlán de Morelos 47600, JAL, Mexico;
| | - Fausto Sánchez-Muñoz
- Departamento de Inmunología, Instituto Nacional de Cardiología, Juan Badiano No. 1, Col. Sección XVI, Tlapan 140080, DF, Mexico;
| | - Elda Georgina Chávez-Cortez
- Centro de Ciencias de la Salud, Facultad de Odontología, Universidad Autónoma de Baja California, Zotoluca s/n, Fracc. Calafia, Mexicali 21040, BC, Mexico; (E.G.C.-C.); (V.P.-R.)
| | - Viviana Pitones-Rubio
- Centro de Ciencias de la Salud, Facultad de Odontología, Universidad Autónoma de Baja California, Zotoluca s/n, Fracc. Calafia, Mexicali 21040, BC, Mexico; (E.G.C.-C.); (V.P.-R.)
| | - Nicolas Serafín-Higuera
- Centro de Ciencias de la Salud, Facultad de Odontología, Universidad Autónoma de Baja California, Zotoluca s/n, Fracc. Calafia, Mexicali 21040, BC, Mexico; (E.G.C.-C.); (V.P.-R.)
- Correspondence:
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Yasen A, Ran B, Wang M, Lv G, Lin R, Shao Y, Aji T, Wen H. Roles of immune cells in the concurrence of Echinococcus granulosus sensu lato infection and hepatocellular carcinoma. Exp Parasitol 2022; 240:108321. [PMID: 35787385 DOI: 10.1016/j.exppara.2022.108321] [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: 09/25/2020] [Revised: 06/28/2022] [Accepted: 06/28/2022] [Indexed: 11/26/2022]
Abstract
Immune cells are pivotal players in the immune responses against both parasitic infection and malignancies. Substantial evidence demonstrated that there may exist possible relationship between echinococcus granulus sensu lato (E. granulosus s.l.) infection and hepatocellular carcinoma (HCC) development. Thus, this study aimed to observe crucial roles of immune cells in the formation of subcutaneous lesions after transplanting HepG2 cell lines with or without E. granulosus s.l. protoscoleces (PSCs). HepG2 cell lines were subcutaneously injected into nude mice in the control group. In the co-transplantation group, HepG2 cells were subcutaneously co-injected with high dosage of E. granulosus s.l. PSCs. From the 25th day of transplantation, volume of subcutaneous lesions was measured every four days, which were removed at the 37th day for further studies. Basic pathological and functional changes were observed. Moreover, expression of Ki67, Bcl-2, Caspase3, α-smooth muscle actin (α-SMA), T cell markers (CD3, CD4, CD8), PD1/PD-L1, nature killer (NK) cell markers (CD16, CD56) were further detected by immunohistochemical staining and quantitative real-time polymerase chain reaction (qRT-PCR) analysis. Subcutaneous lesions were gradually increased in volume and there occurred pathologically heterogeneous tumor cells, which were more significant in the co-transplantation group. Compared to the control group, expression of proliferation markers Ki67 and Bcl-2 was at higher levels in the co-transplantation group. Reversely, apoptotic marker Caspase3 was highly detected in the control group, suggesting promoting effects of E. granulosus s.l. PSCs on HCC development. Interestingly, subcutaneous lesions of the co-transplantation group were more functional in synthesizing and storing glycogen. Collagen and α-SMA+ cells were also at higher levels in the co-transplantation group than those in the control group. Most importantly, co-transplantation of HepG2 cells with E. granulosus s.l. PSCs led to significant increase in the expression of T cell markers, PD1/PD-L1 and NK cells markers. E. granulosus s.l. may have promoting effects on HCC development, which was closely associated with the immune responses of T cells and NK cells.
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Affiliation(s)
- Aimaiti Yasen
- Department of Hepatobiliary and Echinococcosis Surgery, Digestive and Vascular Surgery Center, First Affiliated Hospital of Xinjiang Medical University, 830054, Urumqi, Xinjiang, China; State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University, 830054, Urumqi, Xinjiang, China
| | - Bo Ran
- Department of Hepatobiliary and Echinococcosis Surgery, Digestive and Vascular Surgery Center, First Affiliated Hospital of Xinjiang Medical University, 830054, Urumqi, Xinjiang, China
| | - Maolin Wang
- Department of Hepatobiliary and Echinococcosis Surgery, Digestive and Vascular Surgery Center, First Affiliated Hospital of Xinjiang Medical University, 830054, Urumqi, Xinjiang, China
| | - Guodong Lv
- Clinical Medical Research Institute, First Affiliated Hospital of Xinjiang Medical University, 830054, Urumqi, Xinjiang, China
| | - Renyong Lin
- Clinical Medical Research Institute, First Affiliated Hospital of Xinjiang Medical University, 830054, Urumqi, Xinjiang, China
| | - Yingmei Shao
- Department of Hepatobiliary and Echinococcosis Surgery, Digestive and Vascular Surgery Center, First Affiliated Hospital of Xinjiang Medical University, 830054, Urumqi, Xinjiang, China.
| | - Tuerganaili Aji
- Department of Hepatobiliary and Echinococcosis Surgery, Digestive and Vascular Surgery Center, First Affiliated Hospital of Xinjiang Medical University, 830054, Urumqi, Xinjiang, China; State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University, 830054, Urumqi, Xinjiang, China.
| | - Hao Wen
- Department of Hepatobiliary and Echinococcosis Surgery, Digestive and Vascular Surgery Center, First Affiliated Hospital of Xinjiang Medical University, 830054, Urumqi, Xinjiang, China; State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang Medical University, 830054, Urumqi, Xinjiang, China.
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Hu X, Zhou W, Pi R, Zhao X, Wang W. Genetically modified cancer vaccines: Current status and future prospects. Med Res Rev 2022; 42:1492-1517. [PMID: 35235212 DOI: 10.1002/med.21882] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 12/13/2021] [Accepted: 01/23/2022] [Indexed: 02/05/2023]
Abstract
Vaccines can stimulate the immune system to protect individuals from infectious diseases. Moreover, vaccines have also been applied to the prevention and treatment of cancers. Due to advances in genetic engineering technology, cancer vaccines could be genetically modified to increase antitumor efficacy. Various genes could be inserted into cells to boost the immune response, such as cytokines, T cell costimulatory molecules, tumor-associated antigens, and tumor-specific antigens. Genetically modified cancer vaccines utilize innate and adaptive immune responses to induce durable antineoplastic capacity and prevent the recurrence. This review will discuss the major approaches used to develop genetically modified cancer vaccines and explore recent advances to increase the understanding of engineered cancer vaccines.
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Affiliation(s)
- Xiaoyi Hu
- Department of Gynecology and Obstetrics, Development and Related Disease of Women and Children Key Laboratory of Sichuan Province, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second Hospital, Sichuan University, Chengdu, P. R. China.,State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, P. R. China
| | - Weilin Zhou
- State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, P. R. China
| | - Ruyu Pi
- Department of Gynecology and Obstetrics, Development and Related Disease of Women and Children Key Laboratory of Sichuan Province, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second Hospital, Sichuan University, Chengdu, P. R. China.,State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, P. R. China
| | - Xia Zhao
- Department of Gynecology and Obstetrics, Development and Related Disease of Women and Children Key Laboratory of Sichuan Province, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second Hospital, Sichuan University, Chengdu, P. R. China.,State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, P. R. China
| | - Wei Wang
- State Key Laboratory of Biotherapy and Cancer Center, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, P. R. China
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Structural bases that underline Trypanosoma cruzi calreticulin proinfective, antiangiogenic and antitumor properties. Immunobiology 2019; 225:151863. [PMID: 31732192 DOI: 10.1016/j.imbio.2019.10.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 10/29/2019] [Indexed: 12/24/2022]
Abstract
Microbes have developed mechanisms to resist the host immune defenses and some elicit antitumor immune responses. About 6 million people are infected with Trypanosoma cruzi, the protozoan agent of Chagas' disease, the sixth neglected tropical disease worldwide. Eighty years ago, G. Roskin and N. Klyuyeva proposed that T. cruzi infection mediates an anti-cancer activity. This observation has been reproduced by several other laboratories, but no molecular basis has been proposed. We have shown that the highly pleiotropic chaperone calreticulin (TcCalr, formerly known as TcCRT), translocates from the parasite ER to the exterior, where it mediates infection. Similar to its human counterpart HuCALR (formerly known as HuCRT), TcCalr inhibits C1 in its capacity to initiate the classical pathway of complement activation. We have also proposed that TcCalr inhibits angiogenesis and it is a likely mediator of antitumor effects. We have generated several in silico structural TcCalr models to delimit a peptide (VC-TcCalr) at the TcCalr N-domain. Chemically synthesized VC-TcCalr did bind to C1q and was anti-angiogenic in Gallus gallus chorioallantoic membrane assays. These properties were associated with structural features, as determined in silico. VC-TcCalr, a strong dipole, interacts with charged proteins such as collagen-like tails and scavenger receptors. Comparatively, HuCALR has less polarity and spatial stability, probably due to at least substitutions of Gln for Gly, Arg for Lys, Arg for Asp and Ser for Arg that hinder protein-protein interactions. These differences can explain, at least in part, how TcCalr inhibits the complement activation pathway and has higher efficiency as an antiangiogenic and antitumor agent than HuCALR.
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Scholte LLS, Pascoal-Xavier MA, Nahum LA. Helminths and Cancers From the Evolutionary Perspective. Front Med (Lausanne) 2018; 5:90. [PMID: 29713629 PMCID: PMC5911458 DOI: 10.3389/fmed.2018.00090] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 03/22/2018] [Indexed: 01/20/2023] Open
Abstract
Helminths include free-living and parasitic Platyhelminthes and Nematoda which infect millions of people worldwide. Some Platyhelminthes species of blood flukes (Schistosoma haematobium, Schistosoma japonicum, and Schistosoma mansoni) and liver flukes (Clonorchis sinensis and Opisthorchis viverrini) are known to be involved in human cancers. Other helminths are likely to be carcinogenic. Our main goals are to summarize the current knowledge of human cancers caused by Platyhelminthes, point out some helminth and human biomarkers identified so far, and highlight the potential contributions of phylogenetics and molecular evolution to cancer research. Human cancers caused by helminth infection include cholangiocarcinoma, colorectal hepatocellular carcinoma, squamous cell carcinoma, and urinary bladder cancer. Chronic inflammation is proposed as a common pathway for cancer initiation and development. Furthermore, different bacteria present in gastric, colorectal, and urogenital microbiomes might be responsible for enlarging inflammatory and fibrotic responses in cancers. Studies have suggested that different biomarkers are involved in helminth infection and human cancer development; although, the detailed mechanisms remain under debate. Different helminth proteins have been studied by different approaches. However, their evolutionary relationships remain unsolved. Here, we illustrate the strengths of homology identification and function prediction of uncharacterized proteins from genome sequencing projects based on an evolutionary framework. Together, these approaches may help identifying new biomarkers for disease diagnostics and intervention measures. This work has potential applications in the field of phylomedicine (evolutionary medicine) and may contribute to parasite and cancer research.
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Affiliation(s)
- Larissa L. S. Scholte
- Instituto René Rachou, Fundação Oswaldo Cruz (FIOCRUZ), Belo Horizonte, Brazil
- Vice-Presidência de Pesquisa e Coleções Biológicas, Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
| | - Marcelo A. Pascoal-Xavier
- Instituto René Rachou, Fundação Oswaldo Cruz (FIOCRUZ), Belo Horizonte, Brazil
- Departamento de Anatomia Patológica, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Laila A. Nahum
- Instituto René Rachou, Fundação Oswaldo Cruz (FIOCRUZ), Belo Horizonte, Brazil
- Faculdade Promove de Tecnologia, Belo Horizonte, Brazil
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Oikonomopoulou K, Yu H, Wang Z, Vasiliou SK, Brinc D, Christofi G, Theodorou M, Pavlou P, Hadjisavvas A, Demetriou CA, Kyriacou K, Diamandis EP. Association between Echinococcus granulosus infection and cancer risk - a pilot study in Cyprus. Clin Chem Lab Med 2017; 54:1955-1961. [PMID: 27327131 DOI: 10.1515/cclm-2016-0125] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 05/03/2016] [Indexed: 01/06/2023]
Abstract
BACKGROUND Infections from microorganisms and parasites have been connected with either increased or decreased cancer risk. The objective of this study was to investigate whether infection by Echinococcus granulosus is associated with cancer risk. METHODS We assembled a pilot retrospective cohort of patients who were diagnosed as being infected by E. granulosus in Cyprus between 1930 and 2011. Age/gender-matched non-infected family members and neighbors were selected as references. Medical history was ascertained from each study subject through in-person interview. Cox proportional hazards regression analysis was performed to assess the association of being infected by E. granulosus with cancer risk. RESULTS Individuals with prior infection by E. granulosus (n=249) were more likely to have cancer compared to those without infection (n=753), 11.65% vs. 8.37% (p=0.0492). Survival analysis also showed that subjects with prior infection had a higher risk for developing cancer. The hazards ratio (HR) was 1.595, [95% confidence interval (CI) between 1.008 and 2.525]. The risk ratio did not change significantly (HR=1.536; 95% CI: 0.965-2.445) after adjusting for gender, year of birth, smoking status, alcohol consumption, and family history of cancer. CONCLUSIONS Our study suggests that infection by E. granulosus may increase cancer risk. If this observation can be confirmed independently, further investigation of the mechanisms underlying the association is warranted.
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Kern P, Menezes da Silva A, Akhan O, Müllhaupt B, Vizcaychipi KA, Budke C, Vuitton DA. The Echinococcoses: Diagnosis, Clinical Management and Burden of Disease. ADVANCES IN PARASITOLOGY 2017; 96:259-369. [PMID: 28212790 DOI: 10.1016/bs.apar.2016.09.006] [Citation(s) in RCA: 258] [Impact Index Per Article: 36.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The echinococcoses are chronic, parasitic diseases that are acquired after ingestion of infective taeniid tapeworm eggs from certain species of the genus Echinococcus. Cystic echinococcosis (CE) occurs worldwide, whereas, alveolar echinococcosis (AE) is restricted to the northern hemisphere, and neotropical echinococcosis (NE) has only been identified in Central and South America. Clinical manifestations and disease courses vary profoundly for the different species of Echinococcus. CE presents as small to large cysts, and has commonly been referred to as 'hydatid disease', or 'hydatidosis'. A structured stage-specific approach to CE management, based on the World Health Organization (WHO) ultrasound classification of liver cysts, is now recommended. Management options include percutaneous sterilization techniques, surgery, drug treatment, a 'watch-and-wait' approach or combinations thereof. In contrast, clinical manifestations associated with AE resemble those of a 'malignant', silently-progressing liver disease, with local tissue infiltration and metastases. Structured care is important for AE management and includes WHO staging, drug therapy and long-term follow-up for at least a decade. NE presents as polycystic or unicystic disease. Clinical characteristics resemble those of AE, and management needs to be structured accordingly. However, to date, only a few hundreds of cases have been reported in the literature. The echinococcoses are often expensive and complicated to treat, and prospective clinical studies are needed to better inform case management decisions.
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Affiliation(s)
- P Kern
- University Hospital of Ulm, Ulm, Germany
| | | | - O Akhan
- Hacettepe University, Ankara, Turkey
| | - B Müllhaupt
- University Hospital of Zurich, Zürich, Switzerland
| | - K A Vizcaychipi
- National Institute of Infectious Diseases, Buenos Aires, Argentina
| | - C Budke
- Texas A&M University, College Station, TX, United States
| | - D A Vuitton
- Université de Franche-Comté, Besançon, France
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Puzzling and ambivalent roles of malarial infections in cancer development and progression. Parasitology 2016; 143:1811-1823. [DOI: 10.1017/s0031182016001591] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
SUMMARYScientific evidence strongly suggests that parasites are directly or indirectly associated with carcinogenesis in humans. However, studies have also indicated that parasites or their products might confer resistance to tumour growth.Plasmodiumprotozoa, the causative agents of malaria, exemplify the ambivalent link between parasites and cancer. Positive relationships between malaria and virus-associated cancers are relatively well-documented; for example, malaria can reactivate the Epstein-Barr Virus, which is the known cause of endemic Burkitt lymphoma. Nevertheless, possible anti-tumour properties of malaria have also been reported and, interestingly, this disease has long been thought to be beneficial to patients suffering from cancers. Current knowledge of the potential pro- and anti-cancer roles of malaria suggests that, contrary to other eukaryotic parasites affecting humans,Plasmodium-related cancers are principally lymphoproliferative disorders and attributable to virus reactivation, whereas, similar to other eukaryotic parasites, the anti-tumour effects of malaria are primarily associated with carcinomas and certain sarcomas. Moreover, malarial infection significantly suppresses murine cancer growth by inducing both innate and specific adaptive anti-tumour responses. This review aims to present an update regarding the ambivalent association between malaria and cancer, and further studies may open future pathways to develop novel strategies for anti-cancer therapies.
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Ramírez-Toloza G, Abello P, Ferreira A. Is the Antitumor Property of Trypanosoma cruzi Infection Mediated by Its Calreticulin? Front Immunol 2016; 7:268. [PMID: 27462315 PMCID: PMC4939398 DOI: 10.3389/fimmu.2016.00268] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 06/27/2016] [Indexed: 12/31/2022] Open
Abstract
Eight to 10 million people in 21 endemic countries are infected with Trypanosoma cruzi. However, only 30% of those infected develop symptoms of Chagas' disease, a chronic, neglected tropical disease worldwide. Similar to other pathogens, T. cruzi has evolved to resist the host immune response. Studies, performed 80 years ago in the Soviet Union, proposed that T. cruzi infects tumor cells with similar capacity to that displayed for target tissues such as cardiac, aortic, or digestive. An antagonistic relationship between T. cruzi infection and cancer development was also proposed, but the molecular mechanisms involved have remained largely unknown. Probably, a variety of T. cruzi molecules is involved. This review focuses on how T. cruzi calreticulin (TcCRT), exteriorized from the endoplasmic reticulum, targets the first classical complement component C1 and negatively regulates the classical complement activation cascade, promoting parasite infectivity. We propose that this C1-dependent TcCRT-mediated virulence is critical to explain, at least an important part, of the parasite capacity to inhibit tumor development. We will discuss how TcCRT, by directly interacting with venous and arterial endothelial cells, inhibits angiogenesis and tumor growth. Thus, these TcCRT functions not only illustrate T. cruzi interactions with the host immune defensive strategies, but also illustrate a possible co-evolutionary adaptation to privilege a prolonged interaction with its host.
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Affiliation(s)
- Galia Ramírez-Toloza
- Faculty of Veterinary Medicine and Livestock Sciences, University of Chile , Santiago , Chile
| | - Paula Abello
- Program of Immunology, Faculty of Medicine, Institute of Biomedical Sciences (ICBM), University of Chile , Santiago , Chile
| | - Arturo Ferreira
- Program of Immunology, Faculty of Medicine, Institute of Biomedical Sciences (ICBM), University of Chile , Santiago , Chile
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Machicado C, Marcos LA. Carcinogenesis associated with parasites other than Schistosoma, Opisthorchis and Clonorchis: A systematic review. Int J Cancer 2016; 138:2915-21. [DOI: 10.1002/ijc.30028] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 12/08/2015] [Accepted: 01/25/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Claudia Machicado
- Research Scientist, Bioinformatics Laboratory, Department of Cellular and Molecular Sciences, School of Sciences and Philosophy; Universidad Peruana Cayetano Heredia; Av Honorio Delgado 430, Urb. Ingeniería Lima 31 Peru
- Institute for Biocomputation and Physics of Complex Systems; University of Zaragoza, Spain; Mariano Esquillor, Edificio I + D Zaragoza 50018 Spain
| | - Luis A. Marcos
- Department of Medicine; Stony Brook University; Stony Brook NY
- Instituto De Medicina Tropical Alexander Von Humboldt; Universidad Peruana Cayetano Heredia; Lima Peru
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Brindley PJ, da Costa JMC, Sripa B. Why does infection with some helminths cause cancer? Trends Cancer 2015; 1:174-182. [PMID: 26618199 PMCID: PMC4657143 DOI: 10.1016/j.trecan.2015.08.011] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 08/24/2015] [Accepted: 08/31/2015] [Indexed: 02/07/2023]
Abstract
Infections with Opisthorchis viverrini, Clonorchis sinensis and Schistosoma haematobium are classified as Group 1 biological carcinogens: definitive causes of cancer. These worms are metazoan eukaryotes, unlike the other Group 1 carcinogens including human papilloma virus, hepatitis C virus, and Helicobacter pylori. By contrast, infections with phylogenetic relatives of these helminths, also trematodes of the phylum Platyhelminthes and major human pathogens, are not carcinogenic. These inconsistencies prompt several questions, including how might these infections cause cancer? And why is infection with only a few helminth species carcinogenic? Here we present an interpretation of mechanisms contributing to the carcinogenicity of these helminth infections, including roles for catechol estrogen- and oxysterol-metabolites of parasite origin as initiators of carcinogenesis.
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Affiliation(s)
- Paul J Brindley
- Department of Microbiology, Immunology and Tropical Medicine, and Research Center for Neglected Diseases of Poverty, School of Medicine & Health Sciences, George Washington University, Washington, DC 20037, USA
| | - José M Correia da Costa
- Center for Parasite Biology and Immunology, National Institute of Health Dr. Ricardo Jorge, Rua Alexandre Herculano, 321, 4000-055 Porto, Portugal; and Center for the Study of Animal Science, CECA/ICETA, University of Porto, Portugal
| | - Banchob Sripa
- Tropical Disease Research Laboratory, Department of Pathology, and Liver Fluke and Cholangiocarcinoma Research Center, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
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