1
|
Cre-Recombinase Induces Apoptosis and Cell Death in Enterocyte Organoids. Antioxidants (Basel) 2022; 11:antiox11081452. [PMID: 35892654 PMCID: PMC9332190 DOI: 10.3390/antiox11081452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 06/27/2022] [Accepted: 07/20/2022] [Indexed: 02/07/2023] Open
Abstract
The culture of primary intestinal epithelia cells is not possible in a normal culture system. In 2009 a three-dimensional culture system of intestinal stem cells was established that shows many of the physiological features of the small intestine, such as crypt-villus structure, stem cell niche and all types of differentiated intestinal epithelial cells. These enteroids can be used to analyze biology of intestinal stem cells, gut homeostasis and the development of diseases. They also give the possibility to reduce animal numbers, as enteroids can be cryo-conserved and cultivated for many passages. To investigate the influence of genes such as NADPH oxidases on the gut homeostasis, transgenic approached are the method of choice. The generation of enteroids from knockout mice allows real-time observations of knockout effects. Often conditional knockout or overexpression strategies using inducible Cre recombinase are applied to avoid effects of adaption to the knockout. However, the Cre recombinase has many known caveats from unspecific binding and its endonuclease activity. In this study, we show that although NADPH oxidases are important for in vivo differentiation and proliferation of the intestine, their expression is drastically reduced in the organoid system. Activation of Cre recombinase by 4-hydroxy tamoxifen in freshly isolated enteroids, independently of floxed genes, leads to decreased diameter of organoids. This effect is concentration-dependent and is caused by reduced cell proliferation and induction of apoptosis and DNA damage. In contrast, constitutive expression of Cre has no impact on the enteroids. Therefore, reduction of tamoxifen concentration and treatment duration should be carefully titrated, and appropriate controls are necessary.
Collapse
|
2
|
Lee JS, Kim J, Cui B, Kim SK, Cho SA, An S, Cho SW. Hybrid skin chips for toxicological evaluation of chemical drugs and cosmetic compounds. LAB ON A CHIP 2022; 22:343-353. [PMID: 34904990 DOI: 10.1039/d1lc00550b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Development of drugs and cosmetics for topical application require safety tests in skin models. However, current skin models, such as skin cell sheets and artificial tissue-engineered skin, do not allow sophisticated toxicological evaluations (e.g., sensory irritation, hepatotoxicity). Animal models are prohibited worldwide for testing cosmetics. Therefore, reliable human skin models that recapitulate physiological events in skin tissue need to be established under in vitro settings. In this study, hybrid human skin models that enable delicate toxicological evaluations of drugs and cosmetic compounds are demonstrated. To recapitulate skin cornification, keratinocytes in the top layer of a vertical microfluidic chip were cultured at the air-liquid interface. For the skin-nerve hybrid model, differentiated neural stem cells in 3D collagen were positioned adjacent to and right below the skin layer. This model enables real-time quantitative skin sensitization analysis following chemical treatments by detecting alterations in neuronal activity in combination with a calcium imaging technique. For the skin-liver model, hepatic cells derived from pluripotent stem cells were cultured in 3D collagen distant from the skin layer. Potential hepatotoxicity of cutaneously applied chemicals in this model can be evaluated by quantification of glutathione and reactive oxygen species. Our study suggests that 3D hybrid skin chips would provide useful human skin models in pharmaceutical and cosmetic industries.
Collapse
Affiliation(s)
- Jong Seung Lee
- Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea.
| | - Jin Kim
- Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea.
| | - Baofang Cui
- Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea.
| | - Su Kyeom Kim
- Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea.
| | - Sun-A Cho
- Safety & Microbiology Lab, Amorepacific Co. R&D Unit, Yongin 17038, Republic of Korea
| | - Susun An
- Safety & Microbiology Lab, Amorepacific Co. R&D Unit, Yongin 17038, Republic of Korea
| | - Seung-Woo Cho
- Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea.
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
- Graduate Program of Nano Biomedical Engineering (NanoBME), Advanced Science Institute, Yonsei University, Seoul 03722, Republic of Korea
| |
Collapse
|
3
|
Lee SY, Lee DY, Kang JH, Jeong JW, Kim JH, Kim HW, Oh DH, Kim JM, Rhim SJ, Kim GD, Kim HS, Jang YD, Park Y, Hur SJ. Alternative experimental approaches to reduce animal use in biomedical studies. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
4
|
Hong S, Song JM. A 3D cell printing-fabricated HepG2 liver spheroid model for high-content in situ quantification of drug-induced liver toxicity. Biomater Sci 2021; 9:5939-5950. [PMID: 34318795 DOI: 10.1039/d1bm00749a] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
3D spheroid cultures are attractive candidates for application in in vitro drug-induced hepatotoxicity testing models to improve the reliability of biological information obtainable from a simple 2D culture model. Various 3D spheroid culture models exist for hepatotoxicity screening, but quantitative assays of spheroid response in situ are still challenging to achieve with the current 3D liver toxicity platforms. In this study, we developed a 3D printing-based HepG2 liver spheroid culture model for in situ quantitative evaluation and high-content monitoring of drug-induced hepatotoxicity. HepG2 liver spheroids grown in mini-fabricated hydrogel constructs using a 3D bioprinter were used to obtain the EC50 values and to measure the multi-parametric hepatotoxic effects, including mitochondrial permeability transition (MPT), cytosolic calcium levels, and apoptosis. Interestingly, the average fluorescence intensities of apoptotic and cell death markers, calculated for out-of-focus and in-focus spheroids, increased proportionally as a function of the drug concentration, allowing for the determination of the EC50 values. In addition, 3D HepG2 spheroids were more resistant to nefazodone-induced MPT than 2D HepG2 cells, indicating that the gelatin/alginate hydrogel culture system provides enhanced resistance to hepatotoxic drugs. The drug response of HepG2 liver spheroids was also found to be unrelated to the spheroid size. These results demonstrate that the present 3D cell-printing-based embedded HepG2 liver spheroid platform is a promising approach for screening and characterizing drug-induced hepatotoxicity.
Collapse
Affiliation(s)
- Sera Hong
- College of Pharmacy, Seoul National University, Seoul 08826, South Korea.
| | | |
Collapse
|
5
|
Ta GH, Weng CF, Leong MK. In silico Prediction of Skin Sensitization: Quo vadis? Front Pharmacol 2021; 12:655771. [PMID: 34017255 PMCID: PMC8129647 DOI: 10.3389/fphar.2021.655771] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 04/20/2021] [Indexed: 01/10/2023] Open
Abstract
Skin direct contact with chemical or physical substances is predisposed to allergic contact dermatitis (ACD), producing various allergic reactions, namely rash, blister, or itchy, in the contacted skin area. ACD can be triggered by various extremely complicated adverse outcome pathways (AOPs) remains to be causal for biosafety warrant. As such, commercial products such as ointments or cosmetics can fulfill the topically safe requirements in animal and non-animal models including allergy. Europe, nevertheless, has banned animal tests for the safety evaluations of cosmetic ingredients since 2013, followed by other countries. A variety of non-animal in vitro tests addressing different key events of the AOP, the direct peptide reactivity assay (DPRA), KeratinoSens™, LuSens and human cell line activation test h-CLAT and U-SENS™ have been developed and were adopted in OECD test guideline to identify the skin sensitizers. Other methods, such as the SENS-IS are not yet fully validated and regulatorily accepted. A broad spectrum of in silico models, alternatively, to predict skin sensitization have emerged based on various animal and non-animal data using assorted modeling schemes. In this article, we extensively summarize a number of skin sensitization predictive models that can be used in the biopharmaceutics and cosmeceuticals industries as well as their future perspectives, and the underlined challenges are also discussed.
Collapse
Affiliation(s)
- Giang Huong Ta
- Department of Chemistry, National Dong Hwa University, Shoufeng, Taiwan
| | - Ching-Feng Weng
- Department of Basic Medical Science, Institute of Respiratory Disease, Xiamen Medical College, Xiamen, China
| | - Max K. Leong
- Department of Chemistry, National Dong Hwa University, Shoufeng, Taiwan
| |
Collapse
|
6
|
Shurson GC, Hung YT, Jang JC, Urriola PE. Measures Matter-Determining the True Nutri-Physiological Value of Feed Ingredients for Swine. Animals (Basel) 2021; 11:1259. [PMID: 33925594 PMCID: PMC8146707 DOI: 10.3390/ani11051259] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 04/05/2021] [Accepted: 04/12/2021] [Indexed: 01/10/2023] Open
Abstract
Many types of feed ingredients are used to provide energy and nutrients to meet the nutritional requirements of swine. However, the analytical methods and measures used to determine the true nutritional and physiological ("nutri-physiological") value of feed ingredients affect the accuracy of predicting and achieving desired animal responses. Some chemical characteristics of feed ingredients are detrimental to pig health and performance, while functional components in other ingredients provide beneficial health effects beyond their nutritional value when included in complete swine diets. Traditional analytical procedures and measures are useful for determining energy and nutrient digestibility of feed ingredients, but do not adequately assess their true physiological or biological value. Prediction equations, along with ex vivo and in vitro methods, provide some benefits for assessing the nutri-physiological value of feed ingredients compared with in vivo determinations, but they also have some limitations. Determining the digestion kinetics of the different chemical components of feed ingredients, understanding how circadian rhythms affect feeding behavior and the gastrointestinal microbiome of pigs, and accounting for the functional properties of many feed ingredients in diet formulation are the emerging innovations that will facilitate improvements in precision swine nutrition and environmental sustainability in global pork-production systems.
Collapse
Affiliation(s)
- Gerald C. Shurson
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108, USA; (Y.-T.H.); (J.C.J.); (P.E.U.)
| | | | | | | |
Collapse
|
7
|
Leite MN, Viegas JSR, Praça FSG, de Paula NA, Ramalho LNZ, Bentley MVLB, Frade MAC. Ex vivo model of human skin (hOSEC) for assessing the dermatokinetics of the anti-melanoma drug Dacarbazine. Eur J Pharm Sci 2021; 160:105769. [PMID: 33610737 DOI: 10.1016/j.ejps.2021.105769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 02/05/2021] [Accepted: 02/15/2021] [Indexed: 12/20/2022]
Abstract
Alternative models to replace animals in experimental studies remain a challenge in testing the effectiveness of dermatologic and cosmetic drugs. We proposed a model of human organotypic skin explant culture (hOSEC) to assess the profile of cutaneous drug skin distribution, adopting dacarbazine as a model, and respective new methodologies for dermatokinetic analysis. The viability tests were evaluated in primary keratinocytes and fibroblasts, and skin by MTT and TTC assays, respectively. Then, dacarbazine was applied to the culture medium, and the hOSEC method was applied to verify the dynamics of skin distribution of dacarbazine and determine its dermatokinetic profile. The results of cell and tissue viability showed that both were considered viable. The dermatokinetic results indicated that dacarbazine can be absorbed through the skin, reaching a concentration of 36.36 µg/mL (18,18%) of the initial dose (200 µg/mL) after 12 h in culture. Histological data showed that the skin maintained its structure throughout the tested time that the hOSEC method was applied. No apoptotic cells were observed in the epidermal and dermal layers. No visible changes in the dermo-epidermal junction and no inflammatory processes with the recruitment of defense cells were observed. Hence, these findings suggest that the hOSEC concept as an alternative ex vivo model for assessing the dynamics of skin distribution of drugs, such as dacarbazine, and determining their respective dermatokinetic profiles.
Collapse
Affiliation(s)
- Marcel Nani Leite
- Division of Dermatology - Wound Healing & Hansen's Disease Lab, Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Juliana Santos Rosa Viegas
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Fabíola Silva Garcia Praça
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Natália Aparecida de Paula
- Division of Dermatology - Wound Healing & Hansen's Disease Lab, Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Leandra Náira Zambelli Ramalho
- Department of Pathology and Legal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | | | - Marco Andrey Cipriani Frade
- Division of Dermatology - Wound Healing & Hansen's Disease Lab, Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| |
Collapse
|
8
|
Boonthai P, Noikotr K, Saemram N, Sudmoon R, Tanee T, Chaveerach A, Patarapadungkit N, Siripiyasing P. Formulations for effective detoxification derived fromthree medicinalplants: Thunbergia laurifolia,Clerodendrum disparifoliumand Rotheca serrata. Curr Pharm Biotechnol 2021; 23:140-147. [PMID: 33557734 DOI: 10.2174/1389201022666210208145605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 07/24/2020] [Accepted: 12/14/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Based on the long history of medicinal use of Thunbergia laurifolia, Clerodendrum disparifolium and Rotheca serrata, the extract formulations of these species: T. laurifolia and C. disparifolium; T. laurifolia and R. serrata;and T. laurifolia, C. disparifolium and R. serrata, called formulas 1, 2 and 3, were created for detoxification testing to take more advantage of eachspecies. OBJECTIVE To estimate the detoxifying effects of studiedextract formulations on human cell and tissue culture as a preclinical trial. METHODS Themajor phytochemicals were derived by GC-MS. Thedetoxification efficacy of these formulations in cellsand DNA levelsby MTT and cometassays in toxic PBMCs (incubated with rice whisky or bathroom cleaner). RESULTS The phytochemical constituents were detected at 23.48% phytol and 43.03% oleamide in T. laurifolia; 12.88% oleamide, 20.93% 9,12,15-octadecatrien, 25.52% squalene, 22.19% butylated hydroxy toluene and 15.36% vitamin E in C. disparifolium; and 30.41% phytol, 32.78% oleamide, and12.20%, 9,12,15-octadecatrien-1-ol in R. serrata.The toxic cells treated with the plant formulas 1, 2 and 3 showed no IC50 values,but formulas 1 and 2 displayed higher efficaciesthandid formula 3. The comet assay indicated that the experiments (the treatment on toxic cells with the plant formulas) induced significant (p<0.05) DNA damage compared to the negative control due to poisoning occurring before administration of the plant formulas. The OTM of the controls was significantly (p<0.05) longer than the experimental samplesshowing significantly reduce toxicityof the created formulations. CONCLUSION The formulas showed high detoxification efficacies and the formulations 1 and 2resulted inhigher levels of detoxification thanthe formulation3, especially immediate treatment after receiving toxic substances.
Collapse
Affiliation(s)
- Prasit Boonthai
- Department ofBiology, Faculty of Science, Ramkhamhaeng University. Thailand
| | - Kowit Noikotr
- Department ofBiology, Faculty of Science, Ramkhamhaeng University. Thailand
| | - Naraphatra Saemram
- Department of Chemistry, Faculty of Science, Ramkhamhaeng University. Thailand
| | | | - Tawatchai Tanee
- Faculty of Environment and Resource Studies, Mahasarakham University. Thailand
| | - Arunrat Chaveerach
- Department of Biology, Faculty of Science, Khon Kaen University. Thailand
| | | | | |
Collapse
|
9
|
Andaya R, Booler H, Nagata DDA, Lawson C, Vogt J, Schuetz C, Chang DP, Bantseev V. Intravitreal Administration of Acetyl Triethyl Citrate and Benzyl Benzoate Is Retinotoxic in Rabbits but Not in Cynomolgus Monkeys. Toxicol Pathol 2020; 49:621-633. [PMID: 33252011 DOI: 10.1177/0192623320971571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Sustained drug delivery formulations are developed to reduce dose frequency while maintaining efficacy of intravitreal (ITV) administered therapeutics. Available safety data for components novel to the eye's posterior segment may be limited, requiring preclinical assessments to identify potential toxicities. We evaluated the in vivo and in vitro safety of two solvents, acetyl triethyl citrate (ATEC) and benzyl benzoate (BB), as novel sustained delivery formulations for ITV administration. In vivo tolerability was assessed following ITV administration of ATEC and BB to rabbits and cynomolgus monkeys. In rabbits, ITV solvent administration resulted in moderate to severe retinal toxicity characterized by focal retinal necrosis and/or degeneration, sometimes accompanied by inflammation, with a clear association between the physical presence of the solvent and areas of retinal damage. In contrast, solvent administration in monkeys appeared well tolerated, producing no histologic abnormalities. Toxicity in primary human retinal pigment epithelial cells, characterized by cellular toxicity and mitochondrial injury, corroborated the retinal toxicity in rabbits. In conclusion, ITV solvent depots of ATEC or BB result in chemical and focal retinal toxicity in rabbits, but not monkeys. Additional investigation is needed to demonstrate a sufficient margin of safety prior to use of ATEC or BB in ITV drug products.
Collapse
Affiliation(s)
- Roxanne Andaya
- Department of Safety Assessment, 7412Genentech Inc, South San Francisco, CA, USA
| | - Helen Booler
- Department of Safety Assessment, 7412Genentech Inc, South San Francisco, CA, USA
| | | | - Chris Lawson
- Department of Safety Assessment, 7412Genentech Inc, South San Francisco, CA, USA
| | - Jennifer Vogt
- Department of Safety Assessment, 7412Genentech Inc, South San Francisco, CA, USA
| | - Chris Schuetz
- Department of Safety Assessment, 7412Genentech Inc, South San Francisco, CA, USA
| | - Debby P Chang
- Department of Drug Delivery, 7412Genentech Inc, South San Francisco, CA, USA
| | - Vladimir Bantseev
- Department of Safety Assessment, 7412Genentech Inc, South San Francisco, CA, USA
| |
Collapse
|
10
|
Dijkhoff IM, Drasler B, Karakocak BB, Petri-Fink A, Valacchi G, Eeman M, Rothen-Rutishauser B. Impact of airborne particulate matter on skin: a systematic review from epidemiology to in vitro studies. Part Fibre Toxicol 2020; 17:35. [PMID: 32711561 PMCID: PMC7382801 DOI: 10.1186/s12989-020-00366-y] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 07/14/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Air pollution is killing close to 5 million people a year, and harming billions more. Air pollution levels remain extremely high in many parts of the world, and air pollution-associated premature deaths have been reported for urbanized areas, particularly linked to the presence of airborne nano-sized and ultrafine particles. MAIN TEXT To date, most of the research studies did focus on the adverse effects of air pollution on the human cardiovascular and respiratory systems. Although the skin is in direct contact with air pollutants, their damaging effects on the skin are still under investigation. Epidemiological data suggested a correlation between exposure to air pollutants and aggravation of symptoms of chronic immunological skin diseases. In this study, a systematic literature review was conducted to understand the current knowledge on the effects of airborne particulate matter on human skin. It aims at providing a deeper understanding of the interactions between air pollutants and skin to further assess their potential risks for human health. CONCLUSION Particulate matter was shown to induce a skin barrier dysfunction and provoke the formation of reactive oxygen species through direct and indirect mechanisms, leading to oxidative stress and induced activation of the inflammatory cascade in human skin. Moreover, a positive correlation was reported between extrinsic aging and atopic eczema relative risk with increasing particulate matter exposure.
Collapse
Affiliation(s)
- Irini M Dijkhoff
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700, Fribourg, Switzerland
| | - Barbara Drasler
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700, Fribourg, Switzerland
| | - Bedia Begum Karakocak
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700, Fribourg, Switzerland
| | - Alke Petri-Fink
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700, Fribourg, Switzerland
| | - Giuseppe Valacchi
- Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, Ferrara, Italy
- Department of Animal Sciences, PHHI NCRC, North Carolina State University, Kannapolis, NC, USA
| | | | - Barbara Rothen-Rutishauser
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700, Fribourg, Switzerland.
| |
Collapse
|
11
|
Microfluidic chip for culturing intestinal epithelial cell layers: Characterization and comparison of drug transport between dynamic and static models. Toxicol In Vitro 2020; 65:104815. [DOI: 10.1016/j.tiv.2020.104815] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 02/28/2020] [Indexed: 12/29/2022]
|
12
|
Choi KYG, Wu BC, Lee AHY, Baquir B, Hancock REW. Utilizing Organoid and Air-Liquid Interface Models as a Screening Method in the Development of New Host Defense Peptides. Front Cell Infect Microbiol 2020; 10:228. [PMID: 32509598 PMCID: PMC7251080 DOI: 10.3389/fcimb.2020.00228] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 04/23/2020] [Indexed: 12/24/2022] Open
Abstract
Host defense peptides (HDPs), also known as antimicrobial peptides, are naturally occurring polypeptides (~12–50 residues) composed of cationic and hydrophobic amino acids that adopt an amphipathic conformation upon folding usually after contact with membranes. HDPs have a variety of biological activities including immunomodulatory, anti-inflammatory, anti-bacterial, and anti-biofilm functions. Although HDPs have the potential to address the global threat of antibiotic resistance and to treat immune and inflammatory disorders, they have yet to achieve this promise. Indeed, there are several challenges associated with bringing peptide-based drug candidates from the lab bench to clinical practice, including identifying appropriate indications, stability, toxicity, and cost. These challenges can be addressed in part by the development of innate defense regulator (IDR) peptides and peptidomimetics, which are synthetic derivatives of HDPs with similar or better efficacy, increased stability, and reduced toxicity and cost of the original HDP. However, one of the largest gaps between basic research and clinical application is the validity and translatability of conventional model systems, such as cell lines and animal models, for screening HDPs and their derivatives as potential drug therapies. Indeed, such translation has often relied on animal models, which have only limited validity. Here we discuss the recent development of human organoids for disease modeling and drug screening, assisted by the use of omics analyses. Organoids, developed from primary cells, cell lines, or human pluripotent stem cells, are three-dimensional, self-organizing structures that closely resemble their corresponding in vivo organs with regards to immune responses, tissue organization, and physiological properties; thus, organoids represent a reliable method for studying efficacy, formulation, toxicity and to some extent drug stability and pharmacodynamics. The use of patient-derived organoids enables the study of patient-specific efficacy, toxicogenomics and drug response predictions. We outline how organoids and omics data analysis can be leveraged to aid in the clinical translation of IDR peptides.
Collapse
Affiliation(s)
- Ka-Yee Grace Choi
- Department of Microbiology and Immunology, Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, BC, Canada
| | - Bing Catherine Wu
- Department of Microbiology and Immunology, Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, BC, Canada
| | - Amy Huei-Yi Lee
- Department of Microbiology and Immunology, Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, BC, Canada.,Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC, Canada
| | - Beverlie Baquir
- Department of Microbiology and Immunology, Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, BC, Canada
| | - Robert E W Hancock
- Department of Microbiology and Immunology, Centre for Microbial Diseases and Immunity Research, University of British Columbia, Vancouver, BC, Canada
| |
Collapse
|
13
|
Liu Y, Jing R, Wen Z, Li M. Narrowing the Gap Between In Vitro and In Vivo Genetic Profiles by Deconvoluting Toxicogenomic Data In Silico. Front Pharmacol 2020; 10:1489. [PMID: 31992983 PMCID: PMC6964707 DOI: 10.3389/fphar.2019.01489] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 11/18/2019] [Indexed: 01/09/2023] Open
Abstract
Toxicogenomics (TGx) is a powerful method to evaluate toxicity and is widely used in both in vivo and in vitro assays. For in vivo TGx, reduction, refinement, and replacement represent the unremitting pursuit of live-animal tests, but in vitro assays, as alternatives, usually demonstrate poor correlation with real in vivo assays. In living subjects, in addition to drug effects, inner-environmental reactions also affect genetic variation, and these two factors are further jointly reflected in gene abundance. Thus, finding a strategy to factorize inner-environmental factor from in vivo assays based on gene expression levels and to further utilize in vitro data to better simulate in vivo data is needed. We proposed a strategy based on post-modified non-negative matrix factorization, which can estimate the gene expression profiles and contents of major factors in samples. The applicability of the strategy was first verified, and the strategy was then utilized to simulate in vivo data by correcting in vitro data. The similarities between real in vivo data and simulated data (single-dose 0.72, repeat-doses 0.75) were higher than those observed when directly comparing real in vivo data with in vitro data (single-dose 0.56, repeat-doses 0.70). Moreover, by keeping environment-related factor, a simulation can always be generated by using in vitro data to provide potential substitutions for in vivo TGx and to reduce the launch of live-animal tests.
Collapse
Affiliation(s)
- Yuan Liu
- College of Chemistry, Sichuan University, Chengdu, China
| | - Runyu Jing
- College of Cybersecurity, Sichuan University, Chengdu, China
| | - Zhining Wen
- College of Chemistry, Sichuan University, Chengdu, China
| | - Menglong Li
- College of Chemistry, Sichuan University, Chengdu, China
| |
Collapse
|
14
|
Guo Y, Zhao L, Zhang X, Zhu H. Using a hybrid read-across method to evaluate chemical toxicity based on chemical structure and biological data. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 178:178-187. [PMID: 31004930 PMCID: PMC6508079 DOI: 10.1016/j.ecoenv.2019.04.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 04/05/2019] [Accepted: 04/07/2019] [Indexed: 05/08/2023]
Abstract
Read-across has become a primary approach to fill data gaps for chemical safety assessments. Chemical similarity based on structure, reactivity, and physic-chemical property information is a traditional approach applied for read-across toxicity studies. However, toxicity mechanisms are usually complicated in a biological system, so only using chemical similarity to perform the read-across for new compounds was not satisfactory for most toxicity endpoints, especially when the chemically similar compounds show dissimilar toxicities. This study aims to develop an enhanced read-across method for chemical toxicity predictions. To this end, we used two large toxicity datasets for read-across purposes. One consists of 3979 compounds with Ames mutagenicity data, and the other contains 7332 compounds with rat acute oral toxicity data. First, biological data for all compounds in these two datasets were obtained by querying thousands of PubChem bioassays. The PubChem bioassays with at least five compounds from either of these two datasets showing active responses were selected to generate comprehensive bioprofiles. The read-across studies were performed by using chemical similarity search only and also by using a hybrid similarity search based on both chemical descriptors and bioprofiles. Compared to traditional read-across based on chemical similarity, the hybrid read-across approach showed improved accuracy of predictions for both Ames mutagenicity and acute oral toxicity. Furthermore, we could illustrate potential toxicity mechanisms by analyzing the bioprofiles used for this hybrid read-across study. The results of this study indicate that the new hybrid read-across approach could be an applicable computational tool for chemical toxicity predictions. In this way, the bottleneck of traditional read-across studies can be overcome by introducing public biological data into the traditional process. The incorporation of bioprofiles generated from the additional biological data for compounds can partially solve the "activity cliff" issue and reveal their potential toxicity mechanisms. This study leads to a promising direction to utilize data-driven approaches for computational toxicology studies in the big data era.
Collapse
Affiliation(s)
- Yajie Guo
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing, China
| | - Linlin Zhao
- Center for Computational and Integrative Biology, Rutgers University, Camden, NJ, USA
| | - Xiaoyi Zhang
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing, China.
| | - Hao Zhu
- Center for Computational and Integrative Biology, Rutgers University, Camden, NJ, USA; Department of Chemistry, Rutgers University, Camden, NJ, USA.
| |
Collapse
|
15
|
Abstract
SummaryStudies have shown that daily exposure to different products, whether chemical or natural, can cause irreversible damage to women’s reproductive health. Therefore it is necessary to use tests that evaluate the safety and efficacy of these products. Most reproductive toxicology tests are performedin vivo. However, in recent years, various cell culture methods, including embryonic stem cells and tissues have been developed with the aim of reducing the use of animals in toxicological tests. This is a major advance in the area of toxicology, as these systems have the potential to become a widely used tool compared within vivotests routinely used in reproductive biology and toxicology. The present review describes and highlights data onin vitroculture processes used to evaluate reproductive toxicity as an alternative to traditional methods usingin vivotests.
Collapse
|
16
|
An Invertebrate Host to Study Fungal Infections, Mycotoxins and Antifungal Drugs: Tenebrio molitor. J Fungi (Basel) 2018; 4:jof4040125. [PMID: 30424549 PMCID: PMC6308941 DOI: 10.3390/jof4040125] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 11/03/2018] [Accepted: 11/07/2018] [Indexed: 01/15/2023] Open
Abstract
Faced with ethical conflict and social pressure, researchers have increasingly chosen to use alternative models over vertebrates in their research. Since the innate immune system is evolutionarily conserved in insects, the use of these animals in research is gaining ground. This review discusses Tenebrio molitor as a potential model host for the study of pathogenic fungi. Larvae of T. molitor are known as cereal pests and, in addition, are widely used as animal and human feed. A number of studies on mechanisms of the humoral system, especially in the synthesis of antimicrobial peptides, which have similar characteristics to vertebrates, have been performed. These studies demonstrate the potential of T. molitor larvae as a model host that can be used to study fungal virulence, mycotoxin effects, host immune responses to fungal infection, and the action of antifungal compounds.
Collapse
|
17
|
Ryu B, Kim CY, Oh H, Kim U, Kim J, Jung CR, Lee BH, Lee S, Chang SN, Lee JM, Chung HM, Park JH. Development of an alternative zebrafish model for drug-induced intestinal toxicity. J Appl Toxicol 2017; 38:259-273. [DOI: 10.1002/jat.3520] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 08/08/2017] [Accepted: 08/11/2017] [Indexed: 12/23/2022]
Affiliation(s)
- Bokyeong Ryu
- Department of Laboratory Animal Medicine, College of Veterinary Medicine; Seoul National University; Seoul 08826 Republic of Korea
| | - C-Yoon Kim
- Department of Medicine, School of Medicine; Konkuk University; Seoul 05029 Republic of Korea
| | - Hanseul Oh
- Department of Laboratory Animal Medicine, College of Veterinary Medicine; Seoul National University; Seoul 08826 Republic of Korea
| | - Ukjin Kim
- Department of Laboratory Animal Medicine, College of Veterinary Medicine; Seoul National University; Seoul 08826 Republic of Korea
| | - Jin Kim
- Department of Laboratory Animal Medicine, College of Veterinary Medicine; Seoul National University; Seoul 08826 Republic of Korea
| | - Cho-Rok Jung
- Gene Therapy Research Unit; Korea Research Institute of Bioscience and Biotechnology; Daejeon 34141 Republic of Korea
| | - Byoung-Hee Lee
- National Institute of Biological Resources; Incheon 22689 Republic of Korea
| | - Seungki Lee
- National Institute of Biological Resources; Incheon 22689 Republic of Korea
| | - Seo-Na Chang
- Department of Laboratory Animal Medicine, College of Veterinary Medicine; Seoul National University; Seoul 08826 Republic of Korea
| | - Ji Min Lee
- Department of Laboratory Animal Medicine, College of Veterinary Medicine; Seoul National University; Seoul 08826 Republic of Korea
| | - Hyung-Min Chung
- Department of Medicine, School of Medicine; Konkuk University; Seoul 05029 Republic of Korea
| | - Jae-Hak Park
- Department of Laboratory Animal Medicine, College of Veterinary Medicine; Seoul National University; Seoul 08826 Republic of Korea
| |
Collapse
|
18
|
Freires IA, Sardi JDCO, de Castro RD, Rosalen PL. Alternative Animal and Non-Animal Models for Drug Discovery and Development: Bonus or Burden? Pharm Res 2016; 34:681-686. [PMID: 27858217 DOI: 10.1007/s11095-016-2069-z] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 11/11/2016] [Indexed: 10/20/2022]
Abstract
Mammalian models have served as a basis for R&D over the past decades. Nevertheless, these models are expensive, laborious, may yield results that cannot always be translated into the human in vivo situation and, more recently, have reverberated great social and ethical dilemmas. Hence, the prospect of changes in the global scientific scenario and the Three Rs principle (Reduction, Replacement and Refinement) have encouraged the development of alternative methods to the use of mammals. Despite the efforts, suitable alternative tests are not available in all areas of biomedical research, as regulatory acceptance requires time, prior validation and robust financial and scientific investment. In this perspective, we aim to shed light on the concepts, challenges and perspectives for implementation of innovative alternative animal and non-animal methods in scientific research. The applicability and meaningfulness of invertebrate animal models, in silico analysis and reverse pharmacology are discussed, among other aspects of relevance in today's scenario. Overall, the use of alternative models, including Artemia salina (brine shrimp), Caenorhabditis elegans (roundworm), Danio rerio (zebra fish), Drosophila melanogaster (fruit fly), Galleria mellonella (greater waxmoth) and in silico modelling, increased 909% from 1990 to 2015, as compared to 154% of conventional mammals in the same period. Thus, technological and scientific advancements in the fields of toxicology and drug development seem to have diminished the need for mammalian models. Today, however, mammals still remain critically indispensable to provide - in most cases -reliable data subsidizing and validating translation into the clinical setting.
Collapse
Affiliation(s)
- Irlan Almeida Freires
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas (UNICAMP), 901 Limeira Ave., 13414-018, Piracicaba, SP, Brazil.
| | - Janaina de Cássia Orlandi Sardi
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas (UNICAMP), 901 Limeira Ave., 13414-018, Piracicaba, SP, Brazil
| | - Ricardo Dias de Castro
- Graduate Program in Dentistry, Federal University of Paraíba (UFPB), 58051-900, João Pessoa, PB, Brazil
| | - Pedro Luiz Rosalen
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas (UNICAMP), 901 Limeira Ave., 13414-018, Piracicaba, SP, Brazil.
| |
Collapse
|
19
|
Inagaki Y, Matsumoto Y, Sekimizu K. Using silkworms to establish alternative animal models for evaluation of drug-induced tissue injury. Drug Discov Ther 2016; 10:40-3. [DOI: 10.5582/ddt.2016.01023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yoshinori Inagaki
- Laboratory of Microbiology, Graduate School of Pharmaceutical Sciences, The University of Tokyo
| | - Yasuhiko Matsumoto
- Laboratory of Microbiology, Graduate School of Pharmaceutical Sciences, The University of Tokyo
| | - Kazuhisa Sekimizu
- Laboratory of Microbiology, Graduate School of Pharmaceutical Sciences, The University of Tokyo
| |
Collapse
|
20
|
Inagaki Y, Matsumoto Y, Ishii M, Uchino K, Sezutsu H, Sekimizu K. Fluorescence imaging for a noninvasive in vivo toxicity-test using a transgenic silkworm expressing green fluorescent protein. Sci Rep 2015; 5:11180. [PMID: 26061948 PMCID: PMC4462092 DOI: 10.1038/srep11180] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 05/18/2015] [Indexed: 01/16/2023] Open
Abstract
In drug development, the toxicity of candidate chemicals must be carefully examined in an animal model. Here we developed a live imaging technique using silkworms for a noninvasive toxicity test applicable for drug screening. Injection of carbon tetrachloride, a tissue-injuring chemical, into transgenic silkworms expressing green fluorescent protein (GFP) induced leakage of GFP from the tissues into the hemolymph. The leakage of GFP was suppressed by pre-administration of either cimetidine, a cytochrome P450 inhibitor, or N-acetyl cysteine, a free-radical scavenger. The transgenic silkworm was made transparent by feeding a diet containing chemicals that inhibit uric acid deposition in the epithelial cells. In the transparent silkworms, GFP fluorescence in the fat body could be observed from outside the body. Injection of salicylic acid or iron sulfate, tissue-injuring chemicals, into the transparent silkworms decreased the fluorescence intensity of the GFP in the fat body. These findings suggest that the transparent GFP-expressing silkworm model is useful for evaluating the toxicity of chemicals that induce tissue injury.
Collapse
Affiliation(s)
- Yoshinori Inagaki
- Laboratory of Microbiology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 111-0033, Japan
| | - Yasuhiko Matsumoto
- Laboratory of Microbiology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 111-0033, Japan
| | - Masaki Ishii
- Laboratory of Microbiology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 111-0033, Japan
| | - Keiro Uchino
- Transgenic Silkworm Research Unit, National Institute of Agrobiological Sciences, 1-2 Owashi, Tsukuba, Ibaraki, 305-8634 Japan
| | - Hideki Sezutsu
- Transgenic Silkworm Research Unit, National Institute of Agrobiological Sciences, 1-2 Owashi, Tsukuba, Ibaraki, 305-8634 Japan
| | - Kazuhisa Sekimizu
- Laboratory of Microbiology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 111-0033, Japan
| |
Collapse
|
21
|
Doke SK, Dhawale SC. Alternatives to animal testing: A review. Saudi Pharm J 2013; 23:223-9. [PMID: 26106269 PMCID: PMC4475840 DOI: 10.1016/j.jsps.2013.11.002] [Citation(s) in RCA: 249] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 11/10/2013] [Indexed: 01/13/2023] Open
Abstract
The number of animals used in research has increased with the advancement of research and development in medical technology. Every year, millions of experimental animals are used all over the world. The pain, distress and death experienced by the animals during scientific experiments have been a debating issue for a long time. Besides the major concern of ethics, there are few more disadvantages of animal experimentation like requirement of skilled manpower, time consuming protocols and high cost. Various alternatives to animal testing were proposed to overcome the drawbacks associated with animal experiments and avoid the unethical procedures. A strategy of 3 Rs (i.e. reduction, refinement and replacement) is being applied for laboratory use of animals. Different methods and alternative organisms are applied to implement this strategy. These methods provide an alternative means for the drug and chemical testing, up to some levels. A brief account of these alternatives and advantages associated is discussed in this review with examples. An integrated application of these approaches would give an insight into minimum use of animals in scientific experiments.
Collapse
Affiliation(s)
- Sonali K Doke
- School of Pharmacy, SRTM University, Nanded 431 606, MS, India
| | | |
Collapse
|
22
|
The Three Rs in the pharmaceutical industry: perspectives of scientists and regulators. Anim Welf 2005. [DOI: 10.1017/s0962728600029705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
AbstractSix drug regulatory reviewers and 11 pharmaceutical industry scientists were interviewed to explore their perspectives on the obstacles and opportunities for greater implementation of the Three Rs (replacement, reduction, refinement) in drug research and development. Participants generally supported the current level of animal use in the pharmaceutical industry and viewed in vitro methods as supporting, but not replacing, the use of animals. Obstacles to greater use of the Three Rs cited by participants included the lack of non-animal alternatives; requirements for statistical validity; reluctance by industry and regulators to depart from established patterns of animal use; the priority of commercial objectives ahead of the Three Rs; and concern that less animal testing could jeopardise human safety. Opportunities identified for the Three Rs included the development of better animal models including genetically modified (GM) animals; pursuit of more basic knowledge, notably drug action on gene expression; re-use of animals; greater use of pilot studies; using sufficient numbers of animals per test to avoid repeating inconclusive studies; regular review of animal data in regulatory requirements; and following the regulatory option of combining segments of reproductive toxicology studies into one study. In some areas, greater implementation of the Three Rs seemed well aligned with industry priorities, for example, phenotypic characterisation of GM animals and validation of alternative methods. In other areas, wider use of the Three Rs may require building consensus on areas of disagreement including the usefulness of death as an endpoint; the suitability of re-using animals; and whether GM animals and the use of pilot studies contribute to reduction.
Collapse
|