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Arvizu-Hernandez E, Hernandez-Guerrero CJ, Alvarez-Rios E, Gariglio P, Cornejo-Garrido J, Ocadiz-Delgado R. Laurencia johnstonii extract reverses early lesions in the K14E7HPV16 murine cervical carcinogenesis model. J Med Virol 2024; 96:e29571. [PMID: 38563330 DOI: 10.1002/jmv.29571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 03/01/2024] [Accepted: 03/18/2024] [Indexed: 04/04/2024]
Abstract
Persistent infection with high-risk human papillomavirus (HR-HPV) is a well-established risk factor to the development of cervical intraepithelial neoplasia (CIN), a condition that can progress to cervical cancer (CC) a major health problem worldwide. Recently, there has been growing interest in exploring alternative therapies utilizing natural products, among which is the algae species Laurencia johnstonii Setchell & Gardner, 1924 (L. johnstonii), proposed for the management of precancerous lesions. The aim of this work was to determine the effect of an organic extract from L. johnstonii (ELj) in early cervical lesions (CIN 1). These CIN 1 lesions were generated in a murine model expressing the HR-HPV16 E7 oncoprotein (K14E7HPV transgenic mice) with a single exogenous hormonal stimulus using 17β-estradiol. The histopathological studies, the determination of cell proliferation and of the apoptotic levels in cervical tissue, showed that, seven doses of ELj (30 mg/kg weight per day diluted in a DMSO-saline solution [1:7]) lead to recovery the architecture of cervical epithelium. Accordingly, in the transgenic mice it was observed a statistically significant decrease of the PCNA expression levels, a marker of cell proliferation, and a statistically significant increase in the apoptosis levels using Caspase 3 as a marker. In addition, we determined the expression levels of the tumor suppressor miR-218 and the oncomiRNA miR-21. Interestingly, our results may suggest that ELj treatment tended to restore the normal expression of both miRNAs as compared with controls being more evident in the non-transgenic induced mice. Differences of p < 0.05 were considered statistically significant through the whole study. Based on these results, we propose that the use of ELj could be an alternative for the treatment of cervical early lesions.
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Affiliation(s)
- Erandi Arvizu-Hernandez
- Laboratory of Cellular Biology and Natural Products I, Escuela Nacional de Medicina y Homeopatía, Instituto Politécnico Nacional, La Paz, Mexico
- Department of Genetics and Molecular Biology, Centro de Investigación y de Estudios Avanzados IPN, Ciudad de Mexico, Mexico
| | - Claudia Judith Hernandez-Guerrero
- Department of Technologies Development, Centro Interdisciplinario de Ciencias Marinas, Instituto Politécnico Nacional, La Paz B.C.S., Mexico
| | - Elizabeth Alvarez-Rios
- Department of Genetics and Molecular Biology, Centro de Investigación y de Estudios Avanzados IPN, Ciudad de Mexico, Mexico
| | - Patricio Gariglio
- Department of Genetics and Molecular Biology, Centro de Investigación y de Estudios Avanzados IPN, Ciudad de Mexico, Mexico
| | - Jorge Cornejo-Garrido
- Laboratory of Cellular Biology and Natural Products I, Escuela Nacional de Medicina y Homeopatía, Instituto Politécnico Nacional, La Paz, Mexico
| | - Rodolfo Ocadiz-Delgado
- Department of Genetics and Molecular Biology, Centro de Investigación y de Estudios Avanzados IPN, Ciudad de Mexico, Mexico
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Preuss M, Díaz-Tapia P, Verbruggen H, Zuccarello GC. Gene-rich plastid genomes of two parasitic red algal species, Laurencia australis and L. verruciformis (Rhodomelaceae, Ceramiales), and a taxonomic revision of Janczewskia. J Phycol 2023; 59:950-962. [PMID: 37638497 DOI: 10.1111/jpy.13373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 07/11/2023] [Accepted: 07/12/2023] [Indexed: 08/29/2023]
Abstract
Parasitic red algae are an interesting system for investigating the genetic changes that occur in parasites. These parasites have evolved independently multiple times within the red algae. The functional loss of plastid genomes can be investigated in these multiple independent examples, and fine-scale patterns may be discerned. The only plastid genomes from red algal parasites known so far are highly reduced and missing almost all photosynthetic genes. Our study assembled and annotated plastid genomes from the parasites Janczewskia tasmanica and its two Laurencia host species (Laurencia elata and one unidentified Laurencia sp. A25) from Australia and Janczewskia verruciformis, its host species (Laurencia catarinensis), and the closest known free-living relative (Laurencia obtusa) from the Canary Islands (Spain). For the first time we show parasitic red algal plastid genomes that are similar in size and gene content to free-living host species without any gene loss or genome reduction. The only exception was two pseudogenes (moeB and ycf46) found in the plastid genome of both isolates of J. tasmanica, indicating potential for future loss of these genes. Further comparative analyses with the three highly reduced plastid genomes showed possible gene loss patterns, in which photosynthetic gene categories were lost followed by other gene categories. Phylogenetic analyses did not confirm monophyly of Janczewskia, and the genus was subsumed into Laurencia. Further investigations will determine if any convergent small-scale patterns of gene loss exist in parasitic red algae and how these are applicable to other parasitic systems.
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Affiliation(s)
- Maren Preuss
- National Institute of Water and Atmosphere Research, Wellington, New Zealand
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - Pilar Díaz-Tapia
- Coastal Biology Research Group, Faculty of Sciences and Centre for Advanced Scientific Research, University of A Coruña, A Coruña, Spain
- Instituto Español de Oceanografía (IEO-CSIC), Centro Oceanográfico de A Coruña, A Coruña, Spain
| | - Heroen Verbruggen
- School of BioSciences, University of Melbourne, Parkville, Victoria, Australia
| | - Giuseppe C Zuccarello
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
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Francis C, Bolton JJ, Mattio L, Mandiwana-Neudani TG, Anderson RJ. Molecular systematics reveals increased diversity within the South African Laurencia complex (Rhodomelaceae, Rhodophyta). J Phycol 2017; 53:804-819. [PMID: 28434205 DOI: 10.1111/jpy.12543] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 01/03/2017] [Indexed: 06/07/2023]
Abstract
Previous publications list ten species in the Laurencia complex from South Africa with all ascribed to the genus Laurencia sensu stricto. However, the diversity of the complex in South Africa has not yet been re-assessed following the numerous recent taxonomic changes. This study investigated the phylogenetic relationships and taxonomy of this group in South Africa using recent collections. Methods included molecular phylogenetic analyses of plastid rbcL gene sequences (a total of 146; including eleven outgroup taxa) using Maximum Likelihood and Bayesian Inference, and the examination of morphological and anatomical characters, including the number of corps en cerise when present. The seven genera of the Laurencia complex formed monophyletic clades with high posterior probabilities. Seventeen morphotypes were identified: 14 in the genus Laurencia sensu stricto, among which eight corresponded to Laurencia species currently recognized from South Africa and one each to species of Palisada, Chondrophycus, and Laurenciella. The six remaining morphotypes in Laurencia sensu stricto did not match any descriptions and are described here as five new species: Laurencia alfredensis sp. nov., Laurencia dichotoma sp. nov., Laurencia digitata sp. nov., Laurencia multiclavata sp. nov. and Laurencia sodwaniensis sp. nov. and a new variety: Laurencia pumila var. dehoopiensis var. nov. Laurencia stegengae nom. nov. is established to replace Laurencia peninsularis Stegenga, Bolton and Anderson nom. illeg. The diversity is likely greater, with six additional unidentified specimens found in this molecular investigation. These findings place South Africa alongside Australia in having one of the most diverse floras of this group in the world.
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Affiliation(s)
- Caitlynne Francis
- Department of Biological Sciences and Marine Research Institute, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa
| | - John J Bolton
- Department of Biological Sciences and Marine Research Institute, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa
| | - Lydiane Mattio
- School of Plant Biology and Ocean Institute, University of Western Australia, Crawley, WA, 6009, Australia
- Department of Biological Sciences, University of Cape Town, Rondebosch, 7701, South Africa
| | | | - Robert J Anderson
- Department of Biological Sciences and Marine Research Institute, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa
- Fisheries Research, Department of Agriculture, Forestry and Fisheries, Private Bag X2, Roggebaai, 8012, South Africa
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Calegario G, Pollier J, Arendt P, de Oliveira LS, Thompson C, Soares AR, Pereira RC, Goossens A, Thompson FL. Cloning and Functional Characterization of Cycloartenol Synthase from the Red Seaweed Laurencia dendroidea. PLoS One 2016; 11:e0165954. [PMID: 27832119 PMCID: PMC5104453 DOI: 10.1371/journal.pone.0165954] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Accepted: 10/20/2016] [Indexed: 01/08/2023] Open
Abstract
The red seaweed Laurencia dendroidea belongs to the Rhodophyta, a phylum of eukaryotic algae that is widely distributed across the oceans and that constitute an important source of bioactive specialized metabolites. Laurencia species have been studied since 1950 and were found to contain a plethora of specialized metabolites, mainly halogenated sesquiterpenes, diterpenes and triterpenes that possess a broad spectrum of pharmacological and ecological activities. The first committed step in the biosynthesis of triterpenes is the cyclization of 2,3-oxidosqualene, an enzymatic reaction carried out by oxidosqualene cyclases (OSCs), giving rise to a broad range of different compounds, such as the sterol precursors cycloartenol and lanosterol, or triterpene precursors such as cucurbitadienol and β-amyrin. Here, we cloned and characterized the first OSC from a red seaweed. The OSC gene was identified through mining of a L. dendroidea transcriptome dataset and subsequently cloned and heterologously expressed in yeast for functional characterization, which indicated that the corresponding enzyme cyclizes 2,3-oxidosqualene to the sterol precursor cycloartenol. Accordingly, the gene was named L. dendroidea cycloartenol synthase (LdCAS). A phylogenetic analysis using OSCs genes from plants, fungi and algae revealed that LdCAS grouped together with OSCs from other red algae, suggesting that cycloartenol could be the common product of the OSC in red seaweeds. Furthermore, profiling of L. dendroidea revealed cholesterol as the major sterol accumulating in this species, implicating red seaweeds contain a ‘hybrid’ sterol synthesis pathway in which the phytosterol precursor cycloartenol is converted into the major animal sterol cholesterol.
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Affiliation(s)
- Gabriela Calegario
- Departament of Marine Biology, Federal Fluminense University (UFF), Niterói, Brazil
- Institute of Biology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- SAGE-COPPE, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Jacob Pollier
- Department of Plant Systems Biology, VIB, Gent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Gent, Belgium
| | - Philipp Arendt
- Department of Plant Systems Biology, VIB, Gent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Gent, Belgium
| | - Louisi Souza de Oliveira
- Institute of Biology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- SAGE-COPPE, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Cristiane Thompson
- Institute of Biology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- SAGE-COPPE, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Angélica Ribeiro Soares
- Grupo de Produtos Naturais de Organismos Aquáticos (GPNOA), Núcleo de Estudos Em Ecologia e Desenvolvimento Sócioambiental de Macaé, Federal University of Rio de Janeiro (UFRJ), Macaé, Brazil
| | | | - Alain Goossens
- Department of Plant Systems Biology, VIB, Gent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Gent, Belgium
| | - Fabiano L. Thompson
- Institute of Biology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- SAGE-COPPE, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- * E-mail:
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de Oliveira LS, Tschoeke DA, de Oliveira AS, Hill LJ, Paradas WC, Salgado LT, Thompson CC, Pereira RC, Thompson FL. New Insights on the terpenome of the red seaweed Laurencia dendroidea (Florideophyceae, Rhodophyta). Mar Drugs 2015; 13:879-902. [PMID: 25675000 PMCID: PMC4344607 DOI: 10.3390/md13020879] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2014] [Revised: 12/17/2014] [Accepted: 01/12/2015] [Indexed: 12/14/2022] Open
Abstract
The red seaweeds belonging to the genus Laurencia are well known as halogenated secondary metabolites producers, mainly terpenoids and acetogennins. Several of these chemicals exhibit important ecological roles and biotechnological applications. However, knowledge regarding the genes involved in the biosynthesis of these compounds is still very limited. We detected 20 different genes involved in the biosynthesis of terpenoid precursors, and 21 different genes coding for terpene synthases that are responsible for the chemical modifications of the terpenoid precursors, resulting in a high diversity of carbon chemical skeletons. In addition, we demonstrate through molecular and cytochemical approaches the occurrence of the mevalonate pathway involved in the biosynthesis of terpenes in L. dendroidea. This is the first report on terpene synthase genes in seaweeds, enabling further studies on possible heterologous biosynthesis of terpenes from L. dendroidea exhibiting ecological or biotechnological interest.
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Affiliation(s)
- Louisi Souza de Oliveira
- Institute of Biology, Federal University of Rio de Janeiro (UFRJ) Av. Carlos Chagas Filho, 373-CCS-IB-BLOCO A (ANEXO) A3-202, SAGE-COPPE, Rio de Janeiro 21941-599, Brazil.
| | - Diogo Antonio Tschoeke
- Institute of Biology, Federal University of Rio de Janeiro (UFRJ) Av. Carlos Chagas Filho, 373-CCS-IB-BLOCO A (ANEXO) A3-202, SAGE-COPPE, Rio de Janeiro 21941-599, Brazil.
| | - Aline Santos de Oliveira
- Federal Institute of Education, Science and Technology of Rio de Janeiro (IFRJ), Campus Duque de Caxias, Avenida República do Paraguai, 120, Sarapuí, Duque de Caxias 25050-100, Brazil.
| | - Lilian Jorge Hill
- Research Institute of the Botanical Garden of Rio de Janeiro, Rua Pacheco Leão, 915, Jardim Botânico, Rio de Janeiro 22460-030, Brazil.
| | - Wladimir Costa Paradas
- Research Institute of the Botanical Garden of Rio de Janeiro, Rua Pacheco Leão, 915, Jardim Botânico, Rio de Janeiro 22460-030, Brazil.
| | - Leonardo Tavares Salgado
- Research Institute of the Botanical Garden of Rio de Janeiro, Rua Pacheco Leão, 915, Jardim Botânico, Rio de Janeiro 22460-030, Brazil.
| | - Cristiane Carneiro Thompson
- Institute of Biology, Federal University of Rio de Janeiro (UFRJ) Av. Carlos Chagas Filho, 373-CCS-IB-BLOCO A (ANEXO) A3-202, SAGE-COPPE, Rio de Janeiro 21941-599, Brazil.
| | - Renato Crespo Pereira
- Departament of Marine Biology, Federal Fluminense University (UFF), Morro do Valonguinho, s/n, Centro, Niterói 24001-970, Brazil.
| | - Fabiano L Thompson
- Institute of Biology, Federal University of Rio de Janeiro (UFRJ) Av. Carlos Chagas Filho, 373-CCS-IB-BLOCO A (ANEXO) A3-202, SAGE-COPPE, Rio de Janeiro 21941-599, Brazil.
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