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Ghosh A, Ihsan AU, Nandi M, Cloutier M, Khan MGM, Ramanathan S, Ilangumaran S. Application of EdU-Based DNA Synthesis Assay to Measure Hepatocyte Proliferation In Situ During Liver Regeneration. Methods Mol Biol 2022; 2544:195-206. [PMID: 36125720 DOI: 10.1007/978-1-0716-2557-6_14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Monitoring hepatocyte proliferation in situ following partial hepatectomy is widely used to characterize cytokines, growth factors and signaling molecules and pathways as well as the regulatory mechanisms involved in liver regeneration. Periodic measurement of the liver/body mass ratio estimates the rate of liver regeneration, which is often supplemented by evaluating the proportion of proliferating hepatocytes using a synthetic nucleoside analog such as 5-bromo-2'-deoxyuridine (BrdU) or the nuclear accumulation of proliferating cell nuclear antigen (PCNA) in proliferating cells. The introduction of the thymidine analog 5-ethynyl-2'deoxyuridine (EdU) and its detection by "click chemistry" using fluorescently labeled reagents has simplified the evaluation of live cell proliferation as it eliminates certain limitations of antibody-mediated detection of BrdU. Here, we describe the EdU-based measurement of hepatocyte proliferation during liver regeneration and correlate the results with that of Ki67 and PCNA-based assays.
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Affiliation(s)
- Amit Ghosh
- Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, QC, Canada
| | - Awais Ullah Ihsan
- Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, QC, Canada
| | - Madhuparna Nandi
- Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, QC, Canada
| | - Maryse Cloutier
- Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, QC, Canada
| | - Md Gulam Musawwir Khan
- Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, QC, Canada
| | - Sheela Ramanathan
- Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, QC, Canada
| | - Subburaj Ilangumaran
- Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, QC, Canada.
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Mo C, Xie L, Chen C, Ma J, Huang Y, Wu Y, Xu Y, Peng H, Chen Z, Mao R. The Clinical Significance and Potential Molecular Mechanism of Upregulated CDC28 Protein Kinase Regulatory Subunit 1B in Osteosarcoma. JOURNAL OF ONCOLOGY 2021; 2021:7228584. [PMID: 34925510 PMCID: PMC8683182 DOI: 10.1155/2021/7228584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/27/2021] [Accepted: 11/17/2021] [Indexed: 12/30/2022]
Abstract
BACKGROUND CDC28 Protein Kinase Regulatory Subunit 1B (CKS1B) is a member of cyclin-dependent kinase subfamily and the relationship between CKS1B and osteosarcoma (OS) remains to be explored. METHODS 80 OS and 41 nontumor tissue samples were arranged to conduct immunohistochemistry (IHC) to evaluate CKS1B expression between OS and nontumor samples. The standard mean deviation (SMD) was calculated based on in-house IHC and tissue microarrays and exterior high-throughput datasets for further verification of CKS1B expression in OS. The effect of CKS1B expression on clinicopathological and overall survival of OS patients was measured through public high-throughput datasets, and analysis of immune infiltration and single-cell RNA-seq was applied to ascertain molecular mechanism of CKS1B in OS. RESULTS A total of 197 OS samples and 83 nontumor samples (including tissue and cell line) were obtained from in-house IHC, microarrays, and exterior high-throughput datasets. The analysis of integrated expression status demonstrated upregulation of CKS1B in OS (SMD = 1.38, 95% CI [0.52-2.25]) and the significant power of CKS1B expression in distinguishing OS samples from nontumor samples (Area under the Curve (AUC) = 0.89, 95% CI [0.86-0.91]). Clinicopathological and prognosis analysis indicated no remarkable significance but inference of immune infiltration and single-cell RNA-seq prompted that OS patients with overexpressed CKS1B were more likely to suffer OS metastasis while MYC Protooncogene may be the upstream regulon of CKS1B in proliferating osteoblastic OS cells. CONCLUSIONS In this study, sufficient evidence was provided for upregulation of CKS1B in OS. The advanced effect of CKS1B on OS progression indicates a foreground of CKS1B as a biomarker for OS.
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Affiliation(s)
- Chaohua Mo
- Department of Pathology, Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong 528300, China
| | - Le Xie
- Department of Pathology, Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong 528300, China
| | - Chang Chen
- Department of Pathology, Wuzhou Res Cross Hospital, Wuzhou, Guangxi Zhuang Autonomous Region 543100, China
| | - Jie Ma
- Department of Medical Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Yingxin Huang
- Department of Pathology, Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong 528300, China
| | - Yanxing Wu
- Department of Pathology, Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong 528300, China
| | - Yuanyuan Xu
- Department of Pathology, Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong 528300, China
| | - Huizhi Peng
- Department of Pathology, Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong 528300, China
| | - Zengwei Chen
- Department of Pathology, Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong 528300, China
| | - Rongjun Mao
- Department of Pathology, Foshan Hospital of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Foshan, Guangdong 528300, China
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Jo HS, Park HJ, Choi YY, Seok JI, Han JH, Yoon YI, Kim DS. Portal modulation effects of terlipressin on liver regeneration and survival in a porcine model subjected to 90% hepatectomy. Am J Transl Res 2021; 13:5880-5891. [PMID: 34306332 PMCID: PMC8290722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 04/19/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Excessive postoperative portal pressure is associated with post-hepatectomy liver failure and small-for-size syndrome after partial liver transplantation. This study aimed to identify the portal modulation effects of terlipressin on liver regeneration and survival in a porcine model subjected to 90% hepatectomy. METHODS Twenty pigs undergoing 90% hepatectomy were divided into control (n = 10) and terlipressin (n = 10) groups. Terlipressin 0.5 mg was injected subcutaneously three times a day, from immediately before hepatectomy to 7 days after surgery, for surviving pigs in the terlipressin group. Portal pressure measurement, biochemical analysis, assessment of molecular markers for liver regeneration, and immunohistochemistry were performed in both groups. RESULTS The 7-day survival rate was significantly higher in the terlipressin group than that in the control group. Portal pressure in the terlipressin group was lower than that in the control group at 30 min and 1 h after hepatectomy. Total bilirubin level was lower in the terlipressin group than that in the control group at 1 h and 6 h after hepatectomy. Proliferating cell nuclear antigen expression was higher in the control group than that in the terlipressin group at 6 h after hepatectomy, while the proportion of Ki-67-positive cells was higher in the terlipressin group than that in the control group at 7 days after hepatectomy. Endothelin-1 level reflecting liver injury was lower in the terlipressin group than that in the control group at 1 h and 6 h after hepatectomy. CONCLUSION Terlipressin could optimize liver regeneration and improve survival through rapid and effective portal modulation after extensive hepatectomy.
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Affiliation(s)
- Hye-Sung Jo
- Division of HBP Surgery and Liver Transplantation, Department of Surgery, Korea University College of MedicineSeoul, Korea
| | - Hyun-Jin Park
- Department of Biomedical Science, Korea University College of Medicine Graduate SchoolSeoul, Korea
| | - Yoon Young Choi
- Department of Biomedical Science, Korea University College of Medicine Graduate SchoolSeoul, Korea
| | - Jin-I Seok
- Department of Biomedical Science, Korea University College of Medicine Graduate SchoolSeoul, Korea
| | - Jae-Hyun Han
- Department of Surgery, College of Medicine, St. Vincent’s Hospital, The Catholic University of KoreaSeoul, Korea
| | - Young-In Yoon
- Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of MedicineSeoul, Korea
| | - Dong-Sik Kim
- Division of HBP Surgery and Liver Transplantation, Department of Surgery, Korea University College of MedicineSeoul, Korea
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Okuyama S, Kawamura F, Kubiura M, Tsuji S, Osaki M, Kugoh H, Oshimura M, Kazuki Y, Tada M. Real-time fluorometric evaluation of hepatoblast proliferation in vivo and in vitro using the expression of CYP3A7 coding for human fetus-specific P450. Pharmacol Res Perspect 2020; 8:e00642. [PMID: 32886454 PMCID: PMC7507068 DOI: 10.1002/prp2.642] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/10/2020] [Accepted: 07/13/2020] [Indexed: 12/18/2022] Open
Abstract
The fields of drug discovery and regenerative medicine require large numbers of adult human primary hepatocytes. For this purpose, it is desirable to use hepatocyte-like cells (HLCs) differentiated from human pluripotent stem cells (PSCs). Premature hepatoblast-like cells (HB-LCs) differentiated from PSCs provide an intermediate source and steady supply of newly mature HLCs. To develop an efficient HB-LC induction method, we constructed a red fluorescent reporter, CYP3A7R, in which DsRed is placed under the transcriptional control of CYP3A7 coding for a human fetus-type P450 enzyme. Before using this reporter in human cells, we created transgenic mice using mouse embryonic stem cells (ESCs) carrying a CYP3A7R transgene and confirmed that CYP3A7R was specifically expressed in fetal and newborn livers and reactivated in the adult liver in response to hepatic regeneration. Moreover, we optimized the induction procedure of HB-LCs from transgenic mouse ESCs using semi-quantitative fluorometric evaluation. Activation of Wnt signaling together with chromatin modulation prior to Activin A treatment greatly improved the induction efficiency of HB-LCs. BMP2 and 1.7% dimethyl sulfoxide induced selective proliferation of HB-LCs, which matured to HLCs. Therefore, CYP3A7R will provide a fluorometric evaluation system for high content screening of chemicals that induce HB-LC differentiation, hepatocyte regeneration, and hepatotoxicity when it is introduced into human PSCs.
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Affiliation(s)
- Shota Okuyama
- Stem Cells & Reprogramming LaboratoryDepartment of BiologyFaculty of ScienceToho UniversityFunabashiJapan
| | - Fumihiko Kawamura
- Stem Cells & Reprogramming LaboratoryDepartment of BiologyFaculty of ScienceToho UniversityFunabashiJapan
- Institute of Regenerative Medicine and BiofunctionGraduate School of Medical ScienceTottori UniversityYonagoJapan
| | - Musashi Kubiura
- Stem Cells & Reprogramming LaboratoryDepartment of BiologyFaculty of ScienceToho UniversityFunabashiJapan
| | - Saori Tsuji
- Chromosome Engineering Research CenterTottori UniversityYonagoJapan
| | - Mitsuhiko Osaki
- Chromosome Engineering Research CenterTottori UniversityYonagoJapan
| | - Hiroyuki Kugoh
- Institute of Regenerative Medicine and BiofunctionGraduate School of Medical ScienceTottori UniversityYonagoJapan
- Chromosome Engineering Research CenterTottori UniversityYonagoJapan
| | - Mitsuo Oshimura
- Chromosome Engineering Research CenterTottori UniversityYonagoJapan
| | - Yasuhiro Kazuki
- Institute of Regenerative Medicine and BiofunctionGraduate School of Medical ScienceTottori UniversityYonagoJapan
- Chromosome Engineering Research CenterTottori UniversityYonagoJapan
| | - Masako Tada
- Stem Cells & Reprogramming LaboratoryDepartment of BiologyFaculty of ScienceToho UniversityFunabashiJapan
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Reduced Immunohistochemical Expression of Hnf1β and FoxA2 in Liver Tissue Can Discriminate Between Biliary Atresia and Other Causes of Neonatal Cholestasis. Appl Immunohistochem Mol Morphol 2020; 27:e32-e38. [PMID: 29406331 DOI: 10.1097/pai.0000000000000638] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Biliary atresia (BA) is a necroinflammatory occlusive cholangiopathy that affects infants. Genetic and environmental factors has been proposed for its occurrence. The objectives of this study was to investigate the protein expression of 2 important genes regulating ductal plate remodeling, hepatocyte nuclear factor 1-beta (Hnf1β) and the fork head box protein A2 (FoxA2) in liver tissue from patients with BA and to compare their expression with other causes of neonatal cholestasis (NC). This retrospective study included 60 pediatric patients, 30 with BA and 30 with NC. Immunohistochemistry of Hnf1β and FoxA2 was performed on liver tissues from studied patients as well as 20 healthy subjects. Statistical analysis between immunohistochemistry results and other parameters was performed. Liver tissue from patients with BA revealed reduced Hnf1β and FoxA2 immunoexpression. A strong significant statistical difference between BA and NC group (P<0.0001) with regard to Hnf1β and FoxA2 immunoexpression was evident. Moreover, Hnf1β was significantly correlated with FoxA2 immunoexpression, stage of fibrosis, bile ductular proliferation, and bile plugs in bile ductules. Hnf1β immunoreaction in BA cases showed 76.7% sensitivity, 90% specificity, 88.5% positive predictive value, 79.4% negative predictive value, and 83.4% accuracy. FoxA2 expression in BA cases revealed 70.0% sensitivity, 80.0% specificity, 77.8% positive predictive value, 72.7% negative predictive value, 75.0% accuracy. Hnf1β and FoxA2 immunoexpression could differentiate between BA from other cause of NC.
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Huck I, Gunewardena S, Espanol-Suner R, Willenbring H, Apte U. Hepatocyte Nuclear Factor 4 Alpha Activation Is Essential for Termination of Liver Regeneration in Mice. Hepatology 2019; 70:666-681. [PMID: 30520062 PMCID: PMC6551324 DOI: 10.1002/hep.30405] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 11/23/2018] [Indexed: 12/14/2022]
Abstract
Hepatocyte nuclear factor 4 alpha (HNF4α) is critical for hepatic differentiation. Recent studies have highlighted its role in inhibition of hepatocyte proliferation and tumor suppression. However, the role of HNF4α in liver regeneration (LR) is not known. We hypothesized that hepatocytes modulate HNF4α activity when navigating between differentiated and proliferative states during LR. Western blotting analysis revealed a rapid decline in nuclear and cytoplasmic HNF4α protein levels, accompanied with decreased target gene expression, within 1 hour after two-thirds partial hepatectomy (post-PH) in C57BL/6J mice. HNF4α protein expression did not recover to pre-PH levels until day 3. Hepatocyte-specific deletion of HNF4α (HNF4α-KO [knockout]) in mice resulted in 100% mortality post-PH, despite increased proliferative marker expression throughout regeneration. Sustained loss of HNF4α target gene expression throughout regeneration indicated that HNF4α-KO mice were unable to compensate for loss of HNF4α transcriptional activity. Deletion of HNF4α resulted in sustained proliferation accompanied by c-Myc and cyclin D1 overexpression and a complete deficiency of hepatocyte function after PH. Interestingly, overexpression of degradation-resistant HNF4α in hepatocytes delayed, but did not prevent, initiation of regeneration after PH. Finally, adeno-associated virus serotype 8 (AAV8)-mediated reexpression of HNF4α in hepatocytes of HNF4α-KO mice post-PH restored HNF4α protein levels, induced target gene expression, and improved survival of HNF4α-KO mice post-PH. Conclusion: In conclusion, these data indicate that HNF4α reexpression following initial decrease is critical for hepatocytes to exit from cell cycle and resume function during the termination phase of LR. These results indicate the role of HNF4α in LR and have implications for therapy of liver failure.
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Affiliation(s)
- Ian Huck
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, KS
| | - Sumedha Gunewardena
- Department of Biostatistics University of Kansas Medical Center, Kansas City, KS
| | | | - Holger Willenbring
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research,Liver Center, Division of Transplantation, University of California San Francisco, San Francisco, CA,Department of Surgery, Division of Transplantation, University of California San Francisco, San Francisco, CA
| | - Udayan Apte
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, KS
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Andert A, Alizai HP, Ulmer TF, Heidenhain C, Ziegler P, Brümmendorf TH, Neumann UP, Beier F, Klink CD. Influence of Telomere Length in Hepatocytes on Liver Regeneration after Partial Hepatectomy in Rats. Eur Surg Res 2018; 59:83-90. [PMID: 29886505 DOI: 10.1159/000489090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 04/10/2018] [Indexed: 11/19/2022]
Abstract
BACKGROUND The aim of this study was to investigate telomere length in hepatocytes as a biomarker for liver regeneration after partial hepatectomy (PH) in rats. MATERIALS AND METHODS Sixty male Wistar rats underwent a 70% PH. One-month-old rats were assigned to group Y (n = 30) and 4-month-old rats were assigned to group O (n = 30). The rats were euthanized, and their livers were then harvested at postoperative day (POD) 1, 2, 3, 4, or 7. Telomere lengths and established parameters for liver regeneration (residual liver weight and levels of proliferating cell nuclear antigen [PCNA], Ki67, and interleukin [IL]-6) were measured. RESULTS We observed a significant increase in residual liver weight in group Y compared to that in group O (p = 0.001). The levels of Ki67 (p = 0.016), PCNA (p < 0.0001), and IL-6 (p < 0.001) were significantly higher in group Y. Furthermore, the rats in group Y had significantly earlier peak values of Ki67 and PCNA. Telomeres were significantly longer at the time of PH in group Y (p = 0.001). We showed a correlation between telomere length at the day of PH and liver regeneration. Animals with longer telomeres at the time of PH had better liver regeneration (p = 0.015). In group Y, animals with increased liver regeneration (median cut-off: > 122%) did not show any significant difference in telomere length (p = 0.587) compared to rats with regular regeneration (< 122%). However, in the older animals, rats with increased regeneration had significantly longer telomeres (p = 0.019) than rats with regular regeneration. CONCLUSION Telomere length in rat hepatocytes depends on age, and animals with long telomeres had earlier and better regeneration of healthy liver tissue than rats with short telomeres. Our data confirms that telomere length in rat hepatocytes could be used as a possible predictive marker for liver regeneration, and could help to identify older individuals with a high capacity for hepatic regeneration.
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Affiliation(s)
- Anne Andert
- Department of General, Visceral and Transplant Surgery, Uniklinik RWTH Aachen, Aachen, Germany
| | - Hamid P Alizai
- Department of General, Visceral and Transplant Surgery, Uniklinik RWTH Aachen, Aachen, Germany
| | - Tom Florian Ulmer
- Department of General, Visceral and Transplant Surgery, Uniklinik RWTH Aachen, Aachen, Germany
| | - Christoph Heidenhain
- Department of General and Visceral Surgery, Sana Hospital Düsseldorf-Gerresheim, Düsseldorf-Gerresheim, Germany
| | - Patrick Ziegler
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, Uniklinik RWTH Aachen, Aachen, Germany.,Institute for Occupational and Social Medicine, Uniklinik RWTH Aachen, Aachen, Germany
| | - Tim H Brümmendorf
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, Uniklinik RWTH Aachen, Aachen, Germany
| | - Ulf Peter Neumann
- Department of General, Visceral and Transplant Surgery, Uniklinik RWTH Aachen, Aachen, Germany
| | - Fabian Beier
- Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, Uniklinik RWTH Aachen, Aachen, Germany
| | - Christian D Klink
- Department of General, Visceral and Transplant Surgery, Uniklinik RWTH Aachen, Aachen, Germany
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A label-retaining but unipotent cell population resides in biliary compartment of mammalian liver. Sci Rep 2017; 7:40322. [PMID: 28084309 PMCID: PMC5234023 DOI: 10.1038/srep40322] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 12/05/2016] [Indexed: 12/17/2022] Open
Abstract
Cells with slow proliferation kinetics that retain the nuclear label over long time periods-the label-retaining cells (LRCs)-represent multipotent stem cells in a number of adult tissues. Since the identity of liver LRCs (LLRCs) had remained elusive we utilized a genetic approach to reveal LLRCs in normal non-injured livers and characterized their regenerative properties in vivo and in culture. We found that LLRCs were located in biliary vessels and participated in the regeneration of biliary but not hepatocyte injury. In culture experiments the sorted LLRCs displayed an enhanced self-renewal capacity but a unipotent biliary differentiation potential. Transcriptome analysis revealed a unique set of tumorigenesis- and nervous system-related genes upregulated in LLRCs when compared to non-LRC cholangiocytes. We conclude that the LLRCs established during the normal morphogenesis of the liver do not represent a multipotent primitive somatic stem cell population but act as unipotent biliary progenitor cells.
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