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Lee JY, Bae K, Kim JH, Han HJ, Yoon HY, Yoon KA. Establishment and characterization of six canine hepatocellular carcinoma cell lines. Front Vet Sci 2024; 11:1392728. [PMID: 38840628 PMCID: PMC11150866 DOI: 10.3389/fvets.2024.1392728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 04/23/2024] [Indexed: 06/07/2024] Open
Abstract
Background Hepatocellular carcinoma (HCC) is the most common malignant liver tumor in dogs. Although surgical resection is a major treatment option for canine HCC, there are no distinct strategies for unresectable tumor subtypes or adjuvant chemotherapy for tumors with positive margins. We aimed to establish and characterize novel HCC cell lines from canine patients. Methods The cellular morphology, general growth features and tumorigenicity of the established cell lines were evaluated. We also examined the sensitivity of the cell lines to multi-target tyrosine kinase inhibitors (TKIs). Results We established novel canine HCC cell lines from hepatic tumors and an additional kidney tumor of six canine patients. All cell lines showed colony forming and migratory ability. KU-cHCC-001 and KU-cHCC-001-Kidney, two cell lines exhibiting high epithelial-mesenchymal transition characteristics, showed tumorigenicity in xenografted mice. Toceranib, a veterinary TKI that targets vascular endothelial growth factor (VEGFR)/platelet-derived growth factor receptor (PDGFR)/c-kit, effectively inhibited the mitogen-activated protein kinase pathway and induced apoptosis. The established canine HCC cell lines showed greater sensitivity to toceranib than to sorafenib, a first-line treatment for human HCC targeting RAF/VEGFR/PDGFR. Sorafenib showed improved anti-tumor effects when co-treated with SCH772984, an extracellular signal-regulated kinase inhibitor. Conclusion Our study suggests new therapeutic strategies for canine HCC, and these cell lines are valuable research materials for understanding HCC tumor biology in both humans and dogs.
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Affiliation(s)
- Ja Young Lee
- Department of Veterinary Biochemistry, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Kieun Bae
- Department of Veterinary Biochemistry, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
- KU Animal Cancer Center, Konkuk University Veterinary Medical Teaching Hospital, Seoul, Republic of Korea
| | - Jung-Hyun Kim
- KU Animal Cancer Center, Konkuk University Veterinary Medical Teaching Hospital, Seoul, Republic of Korea
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Hyun-Jung Han
- KU Animal Cancer Center, Konkuk University Veterinary Medical Teaching Hospital, Seoul, Republic of Korea
- Department of Veterinary Emergency and Critical Care, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Hun-Young Yoon
- KU Animal Cancer Center, Konkuk University Veterinary Medical Teaching Hospital, Seoul, Republic of Korea
- Department of Veterinary Surgery, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Kyong-Ah Yoon
- Department of Veterinary Biochemistry, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
- KU Animal Cancer Center, Konkuk University Veterinary Medical Teaching Hospital, Seoul, Republic of Korea
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2
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Kumar SU, Telichko AV, Wang H, Hyun D, Johnson EG, Kent MS, Rebhun RB, Dahl JJ, Culp WTN, Paulmurugan R. Acoustically Driven Microbubbles Enable Targeted Delivery of microRNA-Loaded Nanoparticles to Spontaneous Hepatocellular Neoplasia in Canines. ADVANCED THERAPEUTICS 2020; 3:2000120. [PMID: 33415184 PMCID: PMC7784952 DOI: 10.1002/adtp.202000120] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Indexed: 01/16/2023]
Abstract
Spatially localized microbubble cavitation by ultrasound offers an effective means of altering permeability of natural barriers (i.e. blood vessel and cell membrane) in favor of nanomaterials accumulation in the target site. In this study, a clinically relevant, minimally invasive ultrasound guided therapeutic approach is investigated for targeted delivery of anticancer microRNA loaded PLGA-b-PEG nanoparticles to spontaneous hepatocellular neoplasia in a canine model. Quantitative assessment of the delivered microRNAs revealed prominent and consistent increase in miRNAs levels (1.5-to 2.3-fold increase (p<0.001)) in ultrasound treated tumor regions compared to untreated control regions. Immunohistology of ultrasound treated tumor tissue presented a clear evidence for higher amount of nanoparticles extravasation from the blood vessels. A distinct pattern of cytokine expression supporting CD8+ T cells mediated "cold-to-hot" tumor transition was evident in all patients. On the outset, proposed platform can enhance delivery of miRNA-loaded nanoparticles to deep seated tumors in large animals to enhance chemotherapy.
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Affiliation(s)
- Sukumar Uday Kumar
- Molecular Imaging Program at Stanford (MIPS), Stanford University, Stanford, California; Department of Radiology, Stanford University, Stanford, California
| | - Arsenii V Telichko
- Molecular Imaging Program at Stanford (MIPS), Stanford University, Stanford, California; Department of Radiology, Stanford University, Stanford, California
| | - Huaijun Wang
- Molecular Imaging Program at Stanford (MIPS), Stanford University, Stanford, California; Department of Radiology, Stanford University, Stanford, California
| | - Dongwoon Hyun
- Molecular Imaging Program at Stanford (MIPS), Stanford University, Stanford, California; Department of Radiology, Stanford University, Stanford, California
| | - Eric G Johnson
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - Michael S Kent
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - Robert B Rebhun
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - Jeremy J Dahl
- Molecular Imaging Program at Stanford (MIPS), Stanford University, Stanford, California; Department of Radiology, Stanford University, Stanford, California
| | - William T N Culp
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - Ramasamy Paulmurugan
- Molecular Imaging Program at Stanford (MIPS), Stanford University, Stanford, California; Department of Radiology, Stanford University, Stanford, California
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3
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Li Y, Qu C, Spee B, Zhang R, Penning LC, de Man RA, Peppelenbosch MP, Fieten H, Pan Q. Hepatitis E virus seroprevalence in pets in the Netherlands and the permissiveness of canine liver cells to the infection. Ir Vet J 2020; 73:6. [PMID: 32266057 PMCID: PMC7119158 DOI: 10.1186/s13620-020-00158-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 03/11/2020] [Indexed: 12/19/2022] Open
Abstract
Hepatitis E virus (HEV) as an emerging zoonotic pathogen causes a major public health issue. Transmission from domestic, wildlife and zoo animals to human has been widely reported. Whether pets also serve as reservoirs remains an intriguing question. In this study, we found the sero-positive rates of HEV-specific antibodies in pet dogs, cats and horses of 18.52% (30/162), 14.89% (7/47) and 18.18% (4/22) in the Netherlands. Although HEV viral RNA was not detected in these animals, we have demonstrated that dog liver cells are susceptible to HEV infection in vitro. These results call more attention to address the potential role of pets in the zoonotic transmission of HEV.
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Affiliation(s)
- Yunlong Li
- 1Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, room Na-1005, 's-Gravendijkwal 230, NL-3015 CE Rotterdam, The Netherlands
| | - Changbo Qu
- 1Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, room Na-1005, 's-Gravendijkwal 230, NL-3015 CE Rotterdam, The Netherlands
| | - Bart Spee
- 2Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Ruyi Zhang
- 1Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, room Na-1005, 's-Gravendijkwal 230, NL-3015 CE Rotterdam, The Netherlands
| | - Louis C Penning
- 2Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Robert A de Man
- 1Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, room Na-1005, 's-Gravendijkwal 230, NL-3015 CE Rotterdam, The Netherlands
| | - Maikel P Peppelenbosch
- 1Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, room Na-1005, 's-Gravendijkwal 230, NL-3015 CE Rotterdam, The Netherlands
| | - Hille Fieten
- 2Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Qiuwei Pan
- 1Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center, room Na-1005, 's-Gravendijkwal 230, NL-3015 CE Rotterdam, The Netherlands
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Augustyniak J, Bertero A, Coccini T, Baderna D, Buzanska L, Caloni F. Organoids are promising tools for species-specific in vitro toxicological studies. J Appl Toxicol 2019; 39:1610-1622. [PMID: 31168795 DOI: 10.1002/jat.3815] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 04/05/2019] [Accepted: 04/05/2019] [Indexed: 12/11/2022]
Abstract
Organoids are three-dimensional self-aggregating structures generated from stem cells (SCs) or progenitor cells in a process that recapitulates molecular and cellular stages of early organ development. The differentiation process leads to the appearance of specialized mature cells and is connected with changes in the organoid internal structure rearrangement and self-organization. The formation of organ-specific structures in vitro with highly ordered architecture is also strongly influenced by the extracellular matrix. These features make organoids as a powerful model for in vitro toxicology. Nowadays this technology is developing very quickly. In this review we present, from a toxicological and species-specific point of view, the state of the art of organoid generation from adult SCs and pluripotent SCs: embryonic SCs or induced pluripotent SCs. The current culture organoid techniques are discussed for their main advantages, disadvantages and limitations. In the second part of the review, we concentrated on the characterization of species-specific organoids generated from tissue-specific SCs of different sources: mammary (bovine), epidermis (canine), intestinal (porcine, bovine, canine, chicken) and liver (feline, canine).
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Affiliation(s)
- Justyna Augustyniak
- Department of Stem Cell Bioengineering, Mossakowski Medical Research Centre Polish Academy of Sciences, Warsaw, Poland
| | - Alessia Bertero
- Department of Veterinary Medicine (DIMEVET), Università degli Studi di Milano, Milan, Italy
| | - Teresa Coccini
- Laboratory of Clinical and Experimental Toxicology, Toxicology Unit, ICS Maugeri SpA-SB, IRCCS Pavia, Pavia, Italy
| | - Diego Baderna
- Laboratory of Environmental Chemistry and Toxicology, Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Italy
| | - Leonora Buzanska
- Department of Stem Cell Bioengineering, Mossakowski Medical Research Centre Polish Academy of Sciences, Warsaw, Poland
| | - Francesca Caloni
- Department of Veterinary Medicine (DIMEVET), Università degli Studi di Milano, Milan, Italy
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Lai YC, Ushio N, Rahman MM, Katanoda Y, Ogihara K, Naya Y, Moriyama A, Iwanaga T, Saitoh Y, Sogawa T, Sunaga T, Momoi Y, Izumi H, Miyoshi N, Endo Y, Fujiki M, Kawaguchi H, Miura N. Aberrant expression of microRNAs and the miR-1/MET pathway in canine hepatocellular carcinoma. Vet Comp Oncol 2018; 16:288-296. [DOI: 10.1111/vco.12379] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 11/16/2017] [Accepted: 11/30/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Y.-C. Lai
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
- The United Graduate School of Veterinary Science; Yamaguchi University; Yamaguchi Japan
| | - N. Ushio
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
- The United Graduate School of Veterinary Science; Yamaguchi University; Yamaguchi Japan
| | - M. M. Rahman
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
- The United Graduate School of Veterinary Science; Yamaguchi University; Yamaguchi Japan
| | - Y. Katanoda
- Laboratory of Veterinary Diagnostic Imaging, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - K. Ogihara
- Laboratory of Pathology, School of Life and Environmental Science; Azabu University; Sagamihara Japan
| | - Y. Naya
- Laboratory of Pathology, School of Life and Environmental Science; Azabu University; Sagamihara Japan
| | - A. Moriyama
- Drug Safety Research Laboratories; Shin Nippon Biomedical Laboratories, Ltd.; Kagoshima Japan
| | - T. Iwanaga
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - Y. Saitoh
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - T. Sogawa
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - T. Sunaga
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - Y. Momoi
- Laboratory of Veterinary Diagnostic Imaging, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - H. Izumi
- Drug Safety Research Laboratories; Shin Nippon Biomedical Laboratories, Ltd.; Kagoshima Japan
| | - N. Miyoshi
- Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - Y. Endo
- Laboratory of Small Animal Internal Medicine, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - M. Fujiki
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - H. Kawaguchi
- Department of Hygiene and Health Promotion Medicine; Kagoshima University Graduate School of Medical and Dental Sciences; Kagoshima Japan
| | - N. Miura
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
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Nantasanti S, de Bruin A, Rothuizen J, Penning LC, Schotanus BA. Concise Review: Organoids Are a Powerful Tool for the Study of Liver Disease and Personalized Treatment Design in Humans and Animals. Stem Cells Transl Med 2016; 5:325-30. [PMID: 26798060 DOI: 10.5966/sctm.2015-0152] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 11/09/2015] [Indexed: 12/19/2022] Open
Abstract
Organoids are three-dimensional culture systems in which adult stem cells and their progeny grow and represent the native physiology of the cells in vivo. Organoids have been successfully derived from several organ systems in both animal models and human patients. Organoids have been used for fundamental research, disease modeling, drug testing, and transplantation. In this review, we summarize the applications of liver-derived organoids and discuss their potential. It is likely that organoids will provide an invaluable tool to unravel disease mechanisms, design novel (personalized) treatment strategies, and generate autologous stem cells for gene editing and transplantation purposes.
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Affiliation(s)
- Sathidpak Nantasanti
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands Department of Companion Animal Clinical Sciences, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand
| | - Alain de Bruin
- Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands Department of Pediatrics, Division of Molecular Genetics, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Jan Rothuizen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Louis C Penning
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Baukje A Schotanus
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
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7
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Liver. CANINE AND FELINE GASTROENTEROLOGY 2013. [PMCID: PMC7161409 DOI: 10.1016/b978-1-4160-3661-6.00061-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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8
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Cogliati B, Aloia TPA, Bosch RV, Alves VAF, Hernandez-Blazquez FJ, Dagli MLZ. Identification of hepatic stem/progenitor cells in canine hepatocellular and cholangiocellular carcinoma. Vet Comp Oncol 2010; 8:112-21. [DOI: 10.1111/j.1476-5829.2010.00210.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Spee B, Jonkers MDB, Arends B, Rutteman GR, Rothuizen J, Penning LC. Specific down-regulation of XIAP with RNA interference enhances the sensitivity of canine tumor cell-lines to TRAIL and doxorubicin. Mol Cancer 2006; 5:34. [PMID: 16953886 PMCID: PMC1569868 DOI: 10.1186/1476-4598-5-34] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2005] [Accepted: 09/05/2006] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Apoptosis resistance occurs in various tumors. The anti-apoptotic XIAP protein is responsible for inhibiting apoptosis by reducing caspase-3 activation. Our aim is to evaluate whether RNA inhibition against XIAP increases the sensitivity of canine cell-lines for chemotherapeutics such as TRAIL and doxorubicin. We used small interfering RNA's (siRNA) directed against XIAP in three cell-lines derived from bile-duct epithelia (BDE), mammary carcinoma (P114), and osteosarcoma (D17). These cell-lines represent frequently occurring canine cancers and are highly comparable to their human counterparts. XIAP down-regulation was measured by means of quantitative PCR (Q-PCR) and Western blotting. The XIAP depleted cells were treated with a serial dilution of TRAIL or doxorubicin and compared to mock- and nonsense-treated controls. Viability was measured with a MTT assay. RESULTS All XIAP siRNA treated cell-lines showed a mRNA down-regulation over 80 percent. Western blot analysis confirmed mRNA measurements. No compensatory effect of IAP family members was seen in XIAP depleted cells. The sensitivity of XIAP depleted cells for TRAIL was highest in BDE cells with an increase in the ED50 of 14-fold, compared to mock- and nonsense-treated controls. The sensitivity of P114 and D17 cell-lines increased six- and five-fold, respectively. Doxorubicin treatment in XIAP depleted cells increased sensitivity in BDE cells more than eight-fold, whereas P114 and D17 cell-lines showed an increase in sensitivity of three- and five-fold, respectively. CONCLUSION XIAP directed siRNA's have a strong sensitizing effect on TRAIL-reduced cell-viability and a smaller but significant effect with the DNA damaging drug doxorubicin. The increase in efficacy of chemotherapeutics with XIAP depletion provides the rationale for the use of XIAP siRNA's in insensitive canine tumors.
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Affiliation(s)
- Bart Spee
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, P.O. BOX 80.154, 3508 TD Utrecht, The Netherlands
| | - Martijn DB Jonkers
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, P.O. BOX 80.154, 3508 TD Utrecht, The Netherlands
| | - Brigitte Arends
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, P.O. BOX 80.154, 3508 TD Utrecht, The Netherlands
| | - Gerard R Rutteman
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, P.O. BOX 80.154, 3508 TD Utrecht, The Netherlands
| | - Jan Rothuizen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, P.O. BOX 80.154, 3508 TD Utrecht, The Netherlands
| | - Louis C Penning
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, P.O. BOX 80.154, 3508 TD Utrecht, The Netherlands
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Brinkhof B, Spee B, Rothuizen J, Penning LC. Development and evaluation of canine reference genes for accurate quantification of gene expression. Anal Biochem 2006; 356:36-43. [PMID: 16844072 DOI: 10.1016/j.ab.2006.06.001] [Citation(s) in RCA: 198] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2006] [Revised: 05/31/2006] [Accepted: 06/01/2006] [Indexed: 11/30/2022]
Abstract
In determining relative gene expression by quantitative measurements of mRNA levels using real-time quantitative PCR, internal standards such as reference genes are essential. Large-scale studies evaluating (candidate) reference genes for veterinary research have not been conducted as thoroughly as for human research, although they are equally important. Our goal was to design and evaluate a genome-wide panel of reference genes from different functional classes. First, primers were optimized using mRNA from canine cell lines and from 30 tissues of one dog as template and SYBR green as fluorescent probe. Second, the expression variation and stability of a gene within one specific tissue were determined. Prostate, kidney, mammary gland, left ventricle, and liver tissues from five to nine dogs of different breeds, sexes, ages, body weights, and disease status were used. Averaging relative stabilities over these tissues revealed the usefulness of individual genes as reference genes. Furthermore, according to expression variation of a reference gene within a specific tissue, usually two to four reference genes are sufficient. Taken together, ribosomal protein S19 (RPS19), ribosomal protein S5 (RPS5), beta-2-microglobulin (B2M), and hypoxanthine phosphoribosyltransferase (HPRT) are advocated. However, the optimal set of reference genes depends on the tissue and should be selected and evaluated for each series of experiments.
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Affiliation(s)
- Bas Brinkhof
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3508 TD Utrecht, The Netherlands.
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Kawarai S, Hashizaki K, Kitao S, Nagano S, Madarame H, Neo S, Ishikawa T, Furuichi M, Hisasue M, Tsuchiya R, Tsujimoto H, Yamada T. Establishment and characterization of primary canine hepatocellular carcinoma cell lines producing alpha-fetoprotein. Vet Immunol Immunopathol 2006; 113:30-6. [PMID: 16678911 DOI: 10.1016/j.vetimm.2006.03.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2005] [Revised: 03/01/2006] [Accepted: 03/21/2006] [Indexed: 11/22/2022]
Abstract
A primary cultured cell line named CHKS was established from a hepatocellular carcinoma (HCC) of a dog showing a high level of serum alpha-fetoprotein (AFP). CHKS secreted a 66 KDD AFP into the growth medium regardless of the presence or absence of fetal bovine serum (FBS). Cloning CHKS with limiting dilution produced 4 clones, CHKS-1, -2, -3, and -4, which secreted 826, 471, 70, and less than 10 ng/ml, respectively, of AFP into the culture medium. In culture, these cell lines were similar in morphology and proliferation pattern to epithelial cells and positive to periodic acid-Schiff (PAS) staining. The presence of mRNA for canine albumin was demonstrated by nested PCR. The doubling times of the clone cell lines were 21, 45, 36, and 35 h, saturation densities 34, 18, 22, and 24 x 10(4)/cm(2), and plating efficiencies 18, 45, 46, and 45%, respectively. Chromosome analysis of these cell lines showed near triploidy. These results show that CHKS and its clones have hepatic cell functions and are useful for carcinogenetic and clinical studies of canine HCC.
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Affiliation(s)
- Shinpei Kawarai
- Laboratory of Veterinary Internal Medicine, School of Veterinary Medicine, Azabu University, Sagamihara-shi, Kanagawa 229-8501, Japan
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