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Chemical Composition of Leaves, Stem, and Roots of Peperomia pellucida (L.) Kunth. Molecules 2022; 27:molecules27061847. [PMID: 35335210 PMCID: PMC8950162 DOI: 10.3390/molecules27061847] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/20/2022] [Accepted: 01/26/2022] [Indexed: 12/04/2022] Open
Abstract
Peperomia pellucida is a species known in the Amazon as “erva-de-jabuti” that has been used in several therapeutic applications based on folk medicine. Herein, we describe the classes, subclasses, and the main compounds of the leaves, stems, and roots from P. pellucida by ultra-high performance liquid chromatography coupled to high-resolution mass spectrometry associated with molecular networks, mirror plot on the GNPS library, and machine learning. These data show compounds that were annotated for the first time in the Peperomia genus, such as 2′,4′,5′-trihydroxybutyrophenonevelutin, dehydroretrofractamide C, and retrofractamide B.
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Loc NH, Tung NV, Kim PTA, Yang MS. Expression of Escherichia coli Heat-Labile Enterotoxin B Subunit in Centella (Centella asiatica (L.) Urban) via Biolistic Transformation. Curr Pharm Biotechnol 2020; 21:973-979. [PMID: 32101119 DOI: 10.2174/1389201021666200226094150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 11/16/2019] [Accepted: 01/11/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Heat-Labile enterotoxin B subunit (LTB) produced by Escherichia coli, a non-toxic protein subunit with potential biological properties, is a powerful mucosal and parenteral adjuvant which can induce a strong immune response against co-administered antigens. OBJECTIVE In the present study, LTB protein, encoded by the optimized ltb (also known synthetic ltb, s-ltb) gene in centella plant (Centella asiatica) for use as an antigen, has been discussed. METHODS The s-ltb gene was cloned into a plant expression vector, pMYO51, adjacent to the CaMV 35S promoter and was then introduced into centella plant by biolistic transformation. PCR amplification was conducted to determine the presence of s-ltb gene in the transgenic centella plant. The expression of s-ltb gene was analyzed by immunoblotting and quantified by ELISA. In vitro activity of LTB protein was determined by GM1-ELISA. RESULTS PCR amplification has found seven transgenic centella individuals. However, only five of them produced LTB protein. ELISA analysis showed that the highest amount of LTB protein detected in transgenic centella leaves was about 0.8% of the total soluble protein. GM1-ELISA assay indicated that plant LTB protein bound specifically to GM1-ganglioside, suggesting that the LTB subunits formed active pentamers. CONCLUSION The s-ltb gene that was successfully transformed into centella plants by the biolistic method has produced a relatively high amount of plant LTB protein in the pentameric quaternary structure that has GM1-ganglioside binding affinity, a receptor on the intestinal epithelial membrane.
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Affiliation(s)
- Nguyen H Loc
- Institute of Bioactive Compounds and Department of Biotechnology, University of Sciences, Hue University, Hue, Thua Thien Hue 530000, Vietnam
| | - Nghiem V Tung
- Institute of Bioactive Compounds and Department of Biotechnology, University of Sciences, Hue University, Hue, Thua Thien Hue 530000, Vietnam
| | - Phan T A Kim
- Institute of Bioactive Compounds and Department of Biotechnology, University of Sciences, Hue University, Hue, Thua Thien Hue 530000, Vietnam
| | - Moon S Yang
- Division of Biological Sciences and Research Center of Bioactive Materials, Chonbuk National University, Jeonju, Chonbuk 561-756, Korea
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Alves NSF, Setzer WN, da Silva JKR. The chemistry and biological activities of Peperomia pellucida (Piperaceae): A critical review. JOURNAL OF ETHNOPHARMACOLOGY 2019; 232:90-102. [PMID: 30562552 DOI: 10.1016/j.jep.2018.12.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 12/13/2018] [Accepted: 12/14/2018] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Peperomia pellucida (L.) Kunth is an annual weed with a preference to humid places with reduced solar radiation. This plant is mainly distributed in the Neotropics, Africa, Southeast Asia, and Australia. It is popularly employed in the treatment of a variety of health conditions such as abscesses, abdominal pain, skin sores, conjunctivitis, measles, and kidney troubles. Several studies have also described its antimicrobial, cytotoxic, antidiabetic and a variety of other bioactivities. THE AIM OF THE REVIEW The aim of this work is to evaluate, using a critical review, the present ethnomedicinal applications, phytochemistry and pharmacological studies of P. pellucida essential oils (EOs) and extracts from different locations around the world. MATERIALS AND METHODS This review was performed through an online survey of the ethnomedicinal practices, chemical compositions and pharmacological applications of P. pellucida EOs and extracts. The data were mainly obtained from online journals and books published in English, Portuguese and Spanish. The information was collected from websites such as Google, Google Scholar, PubMed, Science Direct, ResearchGate and other online databases that provided more information about this herb. RESULTS Peperomia pellucida bioactivities such as antimicrobial, cytotoxic, antioxidant, fracture healing, antidiabetic and anti-hypercholesterolemia have been described in several literature sources. Nonetheless, most reports only provide the phytochemical screening of extracts, which does not allow the identification of the active compounds. From these studies, some reported constituents are not included in the Dictionary of Natural Products (DNP), which raises questions toward their identification. In addition, some biological assays were even performed without standard controls for comparison which also makes these results questionable. CONCLUSION This review evaluates data regarding the phytopharmaceutical potential of P. pellucida. In general, several important aspects were questionable or missing in these manuscripts, which points out the need of more investigation on the pharmacological properties and phytochemical compositions of this herb.
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Affiliation(s)
- Nayara Sabrina F Alves
- Programa de Pós-Graduação em Biotecnologia, Universidade Federal do Pará, 66075-900 Belém, Brazil.
| | - William N Setzer
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL 35899, USA; Aromatic Plant Research Center, 230 N 1200 E, Suite 102, Lehi, UT 84043, USA.
| | - Joyce Kelly R da Silva
- Programa de Pós-Graduação em Biotecnologia, Universidade Federal do Pará, 66075-900 Belém, Brazil.
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Guan W, Liu W, Bao J, Li J, Yuan C, Tang J, Shi D. Analysis and application of a neutralizing linear epitope on liable toxin B of enterotoxin Escherichia coli. Appl Microbiol Biotechnol 2015; 99:5985-96. [PMID: 25794873 DOI: 10.1007/s00253-015-6448-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Revised: 01/27/2015] [Accepted: 01/28/2015] [Indexed: 01/11/2023]
Abstract
Heat-labile enterotoxin (LT) of enterotoxigenic Escherichia coli (ETEC) is one of the major virulence factors for causing diarrhea in piglets, and LT is a strong immunogen. Thus, LT represents an important target for development of vaccines and diagnostic tests. In this study, bioinformatic tools were used to predict six antigenic B cell epitopes in the B subunit of LT protein (LTB) of ETEC strains. Then, seven antigenic B cell epitopes of LTB were identified by polyclonal antisera (polyclonal antibody (PAb)) using a set of LTB-derived peptides expressed as maltose-binding protein (MBP) fusion protein. In addition, one LTB-specific monoclonal antibody (MAb) was generated and defined its corresponding epitope as mentioned above. This MAb was able to specifically bind with native LT toxin and has no cross-reaction with LT-II (type II heat-labile enterotoxin), Stx1 (Shiga toxin I), Stx2 (Shiga toxin II), STa (heat-stable enterotoxin I), and STb (heat-stable enterotoxin II) toxins. Further, this MAb was able to interrupt LT toxin specific binding to GM1 receptor, indicating that the corresponding epitope is the specific binding region to GM1 receptor. Moreover, in vitro and in vivo assay showed that the MAb was able to neutralize the native LT toxin. Diarrheal suckling pigs challenged with LT-positive ETEC strain recovered when an enema with this purified MAb was administered. This study will provide the foundation for further studies about the interaction between LT toxin and GM1 receptor and about the developing of epitope-based vaccines and specific therapeutic agent.
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Affiliation(s)
- Weikun Guan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang, 150030, People's Republic of China
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Hsuuw YD, Chan WH. Apoptotic effects of dillapiole on maturation of mouse oocytes, fertilization and fetal development. Drug Chem Toxicol 2015; 38:469-76. [PMID: 25721892 DOI: 10.3109/01480545.2014.1002037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Previously, we reported that dillapiole, a phenylpropanoid with antileishmanial, anti-inflammatory, antifungal and acaricidal activities, is a risk factor for normal embryonic development that triggers apoptotic processes in the inner cell mass of mouse blastocysts, leading to impaired embryonic development and cell viability. In the current study, we investigated the deleterious effects of dillapiole on mouse oocyte maturation, in vitro fertilization (IVF) and subsequent pre- and post-implantation development, both in vitro and in vivo. Notably, dillapiole induced significant impairment of mouse oocyte maturation, decrease in the IVF rate and inhibition of subsequent embryonic development in vitro. Pre-incubation of oocytes with dillapiole during in vitro maturation led to an increase in post-implantation embryo resorption and decrease in mouse fetal weight. In an in vivo animal model, 2.5, 5 or 10 μM dillapiole provided in drinking water caused a decrease in oocyte maturation and IVF, and led to deleterious effects on early embryonic development. Importantly, pre-incubation of oocytes with a caspase-3-specific inhibitor effectively blocked dillapiole-triggered deleterious effects, clearly implying that embryonic injury induced by dillapiole is mediated via a caspase-dependent apoptotic mechanism. To the best of our knowledge, this is the first study to establish the impact of dillapiole on maturation of mouse oocytes, fertilization and sequential embryonic development.
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Affiliation(s)
- Yan-Der Hsuuw
- a Department of Life Science , National Pingtung University of Science and Technology , Pingtung , Taiwan
| | - Wen-Hsiung Chan
- b Department of Bioscience Technology and Center for Nanotechnology , Chung Yuan Christian University , Chung Li , Taiwan , and.,c Center for Biomedical Technology, Chung Yuan Christian University , Chung Li , Taiwan
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Cytotoxic effects of dillapiole on embryonic development of mouse blastocysts in vitro and in vivo. Int J Mol Sci 2014; 15:10751-65. [PMID: 24933639 PMCID: PMC4100178 DOI: 10.3390/ijms150610751] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 05/25/2014] [Accepted: 06/06/2014] [Indexed: 11/18/2022] Open
Abstract
We examined the cytotoxic effects of dillapiole, a phenylpropanoid with antileishmanial, anti-inflammatory, antifungal, and acaricidal activities, on the blastocyst stage of mouse embryos, subsequent embryonic attachment and outgrowth in vitro, and in vivo implantation via embryo transfer. Blastocysts treated with 2.5–10 μM dillapiole exhibited a significant increase in apoptosis and corresponding decrease in total cell number. Notably, the implantation success rates of blastocysts pretreated with dillapiole were lower than those of their control counterparts. Moreover, in vitro treatment with 2.5–10 μM dillapiole was associated with increased resorption of post-implantation embryos and decreased fetal weight. Our results collectively indicate that dillapiole induces apoptosis and retards early post-implantation development, both in vitro and in vivo. However, the extent to which this organic compound exerts teratogenic effects on early human development is not known at present. Further studies are required to establish effective protection strategies against the cytotoxic effects of dillapiole.
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Rojas-Martínez R, Arrieta J, Cruz-Antonio L, Arrieta-Baez D, Velázquez-Méndez AM, Sánchez-Mendoza ME. Dillapiole, isolated from Peperomia pellucida, shows gastroprotector activity against ethanol-induced gastric lesions in Wistar rats. Molecules 2013; 18:11327-37. [PMID: 24064453 PMCID: PMC6269875 DOI: 10.3390/molecules180911327] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 09/04/2013] [Accepted: 09/10/2013] [Indexed: 11/16/2022] Open
Abstract
Peperomia pellucida is a plant used in traditional medicine to treat gastric ulcers. Although this gastroprotective activity was reported, the active compounds have not been identified. Therefore, the aim herein was to identify the most active compound in the gastroprotective activity of P. pellucida using an ethanol-induced gastric ulcer experimental rat model. A gastroprotective effect was observed when the hexane and dichloromethane extracts were tested, with the higher effect being obtained with the dichloromethane extract (82.3 ± 5.6%) at 100 mg/kg. Dillapiole was identified as the most active compound in this extract. Although there have been previous reports on dillapiole, this is the first on its gastroprotective activity. Rats treated with this compound at 3, 10, 30 and 100 mg/kg showed 23.1, 56.1, 73.2 and 85.5% gastroprotection, respectively. The effect elicited by dillapiole at 100 mg/kg was not attenuated by pretreatment with indomethacin (10 mg/kg, s.c.), a prostaglandin synthesis blocker, NG-nitro-l-arginine methyl ester (70 mg/kg, i.p.), a nitric oxide (NO) synthase inhibitor, or N-ethylmaleimide (10 mg/kg, s.c.), a blocker of sulfhydryl groups. This suggests that the gastroprotective mechanism of action of dillapiole does not involve prostaglandins, NO or sulfhydryl groups.
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Affiliation(s)
- Raúl Rojas-Martínez
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Colonia Santo Tomás, Delegación Miguel Hidalgo, México D.F., 11340, Mexico; E-Mails: (R.R.-M.); (J.A.)
| | - Jesús Arrieta
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Colonia Santo Tomás, Delegación Miguel Hidalgo, México D.F., 11340, Mexico; E-Mails: (R.R.-M.); (J.A.)
| | - Leticia Cruz-Antonio
- Facultad de Estudios Superiores Zaragoza, UNAM, Batalla del 5 de Mayo Esquina Fuerte de Loreto, Ejército de Oriente, México D.F., 09230, Mexico; E-Mail:
| | - Daniel Arrieta-Baez
- Centro de Nanociencias y Micro y Nanotecnologías del Instituto Politécnico Nacional, Unidad Profesional Adolfo López Mateos, Luis Enrique Erro S/N, Zacatenco, México D.F., 07738, Mexico; E-Mail:
| | - Antonio Magdiel Velázquez-Méndez
- Universidad Tecnológica de la Selva, Entronque Toniná Carretera Ocosingo-Altamirano, Ocosingo, Estado de Chiapas, 29950, Mexico; E-Mail:
| | - María Elena Sánchez-Mendoza
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Colonia Santo Tomás, Delegación Miguel Hidalgo, México D.F., 11340, Mexico; E-Mails: (R.R.-M.); (J.A.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +55-5729-6300 (ext. 62827); Fax: +55-5622-5329
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Guan ZJ, Guo B, Huo YL, Guan ZP, Dai JK, Wei YH. Recent advances and safety issues of transgenic plant-derived vaccines. Appl Microbiol Biotechnol 2013; 97:2817-40. [PMID: 23447052 PMCID: PMC7080054 DOI: 10.1007/s00253-012-4566-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 10/30/2012] [Accepted: 11/01/2012] [Indexed: 01/08/2023]
Abstract
Transgenic plant-derived vaccines comprise a new type of bioreactor that combines plant genetic engineering technology with an organism's immunological response. This combination can be considered as a bioreactor that is produced by introducing foreign genes into plants that elicit special immunogenicity when introduced into animals or human beings. In comparison with traditional vaccines, plant vaccines have some significant advantages, such as low cost, greater safety, and greater effectiveness. In a number of recent studies, antigen-specific proteins have been successfully expressed in various plant tissues and have even been tested in animals and human beings. Therefore, edible vaccines of transgenic plants have a bright future. This review begins with a discussion of the immune mechanism and expression systems for transgenic plant vaccines. Then, current advances in different transgenic plant vaccines will be analyzed, including vaccines against pathogenic viruses, bacteria, and eukaryotic parasites. In view of the low expression levels for antigens in plants, high-level expression strategies of foreign protein in transgenic plants are recommended. Finally, the existing safety problems in transgenic plant vaccines were put forward will be discussed along with a number of appropriate solutions that will hopefully lead to future clinical application of edible plant vaccines.
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Affiliation(s)
- Zheng-jun Guan
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Life Science, Northwest University, Xi’an, 710069 People’s Republic of China
- Department of Life Sciences, Yuncheng University, Yuncheng, Shanxi 044000 China
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093 China
| | - Bin Guo
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Life Science, Northwest University, Xi’an, 710069 People’s Republic of China
| | - Yan-lin Huo
- Centre of Biological and Chemical Exiperiment, Yuncheng University, Yuncheng, Shanxi 044000 China
| | - Zheng-ping Guan
- Department of Animal Science and Technology, Nanjing Agriculture University, Nanjing, Jiangshu 210095 China
| | - Jia-kun Dai
- Enzyme Engineering Institute of Shaanxi, Academy of Sciences, Xi’an, Shaanxi 710600 People’s Republic of China
| | - Ya-hui Wei
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Life Science, Northwest University, Xi’an, 710069 People’s Republic of China
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Ahmad P, Ashraf M, Younis M, Hu X, Kumar A, Akram NA, Al-Qurainy F. Role of transgenic plants in agriculture and biopharming. Biotechnol Adv 2011; 30:524-40. [PMID: 21959304 DOI: 10.1016/j.biotechadv.2011.09.006] [Citation(s) in RCA: 166] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Revised: 08/23/2011] [Accepted: 09/12/2011] [Indexed: 11/29/2022]
Abstract
At present, environmental degradation and the consistently growing population are two main problems on the planet earth. Fulfilling the needs of this growing population is quite difficult from the limited arable land available on the globe. Although there are legal, social and political barriers to the utilization of biotechnology, advances in this field have substantially improved agriculture and human life to a great extent. One of the vital tools of biotechnology is genetic engineering (GE) which is used to modify plants, animals and microorganisms according to desired needs. In fact, genetic engineering facilitates the transfer of desired characteristics into other plants which is not possible through conventional plant breeding. A variety of crops have been engineered for enhanced resistance to a multitude of stresses such as herbicides, insecticides, viruses and a combination of biotic and abiotic stresses in different crops including rice, mustard, maize, potato, tomato, etc. Apart from the use of GE in agriculture, it is being extensively employed to modify the plants for enhanced production of vaccines, hormones, etc. Vaccines against certain diseases are certainly available in the market, but most of them are very costly. Developing countries cannot afford the disease control through such cost-intensive vaccines. Alternatively, efforts are being made to produce edible vaccines which are cheap and have many advantages over the commercialized vaccines. Transgenic plants generated for this purpose are capable of expressing recombinant proteins including viral and bacterial antigens and antibodies. Common food plants like banana, tomato, rice, carrot, etc. have been used to produce vaccines against certain diseases like hepatitis B, cholera, HIV, etc. Thus, the up- and down-regulation of desired genes which are used for the modification of plants have a marked role in the improvement of genetic crops. In this review, we have comprehensively discussed the role of genetic engineering in generating transgenic lines/cultivars of different crops with improved nutrient quality, biofuel production, enhanced production of vaccines and antibodies, increased resistance against insects, herbicides, diseases and abiotic stresses as well as the safety measures for their commercialization.
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Affiliation(s)
- Parvaiz Ahmad
- Department of Botany, A.S. College, 190008, University of Kashmir, Srinagar, India.
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da Hora VP, Conceição FR, Dellagostin OA, Doolan DL. Non-toxic derivatives of LT as potent adjuvants. Vaccine 2011; 29:1538-44. [DOI: 10.1016/j.vaccine.2010.11.091] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2010] [Revised: 11/10/2010] [Accepted: 11/30/2010] [Indexed: 12/21/2022]
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