1
|
Kawata N, Kang D, Aiuchi T, Obama T, Yoshitake O, Shibata T, Takimoto M, Itabe H, Honda K. Proteomics of human glomerulonephritis by laser microdissection and liquid chromatography-tandem mass spectrometry. Nephrology (Carlton) 2019; 25:351-359. [PMID: 31707756 PMCID: PMC7064884 DOI: 10.1111/nep.13676] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/04/2019] [Accepted: 10/13/2019] [Indexed: 12/14/2022]
Abstract
Aim Laser microdissection (LMD) and liquid chromatography‐tandem mass spectrometry (LC‐MS/MS) enable clinicians to analyse proteins from tissue sections. In nephrology, these methods are used to diagnose diseases of abnormal protein deposition, such as amyloidosis, but they are seldom applied to the diagnosis and pathophysiological understanding of human glomerular diseases. Methods Renal biopsy specimens were obtained from five patients with IgA nephropathy (IgAN), five patients with membranous nephropathy (MN) and five kidney transplant donors (as controls). From 10‐μm‐thick sections of formalin‐fixed, paraffin‐embedded specimens, 0.3‐mm2 samples of glomerular tissue were subjected to LMD. The samples were analysed by LC‐MS/MS and investigated clinically and histologically. Results From the control glomeruli, we identified more than 300 types of proteins. In patients with IgAN, we detected significant increases not only in IgA1 and in C3, but also in the factors related to oxidative stress and cell proliferation in comparison to the controls. In patients with MN, levels of IgG1, IgG4, C3, C4a and phospholipase‐A2‐receptor were significantly elevated in comparison to the controls, as were the aforementioned factors related to oxidative stress and cell proliferations detected in IgAN. Conclusion Application of LMD and LC‐MS/MS to renal biopsy specimens enabled us to identify not only pathognomonic proteins for the diagnosis, but also several factors possibly involved in the pathogenesis of human glomerular diseases. This paper examined the possible application of laser microdissection and liquid chromatography‐tandem mass spectrometry to renal biopsy specimens to clarify the pathogenesis of human glomerular diseases.
Collapse
Affiliation(s)
- Naoto Kawata
- Department of Anatomy, Showa University School of Medicine, Tokyo, Japan.,Department of Medicine, Division of Nephrology, Showa University Fujigaoka Hospital, Kanagawa, Japan
| | - Dedong Kang
- Department of Anatomy, Showa University School of Medicine, Tokyo, Japan
| | - Toshihiro Aiuchi
- Department of Pharmaceutical Sciences, Division of Biological Chemistry, Showa University School of Pharmacy, Tokyo, Japan
| | - Takashi Obama
- Department of Pharmaceutical Sciences, Division of Biological Chemistry, Showa University School of Pharmacy, Tokyo, Japan
| | - Osamu Yoshitake
- Department of Surgery, Division of General and Gastroenterological Surgery, Showa University School of Medicine, Tokyo, Japan
| | - Takanori Shibata
- Department of Medicine, Division of Nephrology, Showa University School of Medicine, Tokyo, Japan
| | - Masafumi Takimoto
- Department of Pathology, Showa University School of Medicine, Tokyo, Japan
| | - Hiroyuki Itabe
- Department of Pharmaceutical Sciences, Division of Biological Chemistry, Showa University School of Pharmacy, Tokyo, Japan
| | - Kazuho Honda
- Department of Anatomy, Showa University School of Medicine, Tokyo, Japan
| |
Collapse
|
2
|
de Souza AP, Pedroso AP, Watanabe RLH, Dornellas APS, Boldarine VT, Laure HJ, do Nascimento CMO, Oyama LM, Rosa JC, Ribeiro EB. Gender-specific effects of intrauterine growth restriction on the adipose tissue of adult rats: a proteomic approach. Proteome Sci 2015; 13:32. [PMID: 26633942 PMCID: PMC4667418 DOI: 10.1186/s12953-015-0088-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 11/26/2015] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Intrauterine growth restriction (IUGR) may program metabolic alterations affecting physiological functions and lead to diseases in later life. The adipose tissue is an important organ influencing energy homeostasis. The present study was aimed at exploring the consequences of IUGR on the retroperitoneal adipose tissue of adult male and female rats, using a proteomic approach. METHODS AND RESULTS Pregnant Wistar rats were fed with balanced chow, either ad libitum (control group) or restricted to 50 % of control intake (restricted group) during the whole gestation. The offspring were weaned to ad libitum chow and studied at 4 months of age. Retroperitoneal fat was analyzed by two-dimensional gel electrophoresis followed by mass spectrometry. Both male and female restricted groups had low body weight at birth and at weaning but normal body weight at adulthood. The restricted males had normal fat pads weight and serum glucose levels, with a trend to hyperinsulinemia. The restricted females had increased fat pads weight with normal glucose and insulin levels. The restricted males showed up-regulated levels of proteasome subunit α type 3, branched-chain-amino-acid aminotransferase, elongation 1- alpha 1, fatty acid synthase levels, cytosolic malate dehydrogenase and ATP synthase subunit alpha. These alterations point to increased proteolysis and lipogenesis rates and favoring of ATP generation. The restricted females showed down-regulated levels of L-lactate dehydrogenase perilipin-1, mitochondrial branched-chain alpha-keto acid dehydrogenase E1, and transketolase. These findings suggest impairment of glycemic control, stimulation of lipolysis and inhibition of proteolysis, pentose phosphate pathway and lipogenesis rates. In both genders, several proteins involved in oxidative stress and inflammation were affected, in a pattern compatible with impairment of these responses. CONCLUSIONS The proteomic analysis of adipose tissue showed that, although IUGR affected pathways of substrate and energy metabolism in both males and females, important gender differences were evident. While IUGR males displayed alterations pointing to a predisposition to later development of obesity, the alterations observed in IUGR females pointed to a metabolic status of established obesity, in agreement with their increased fat pads mass.
Collapse
Affiliation(s)
- Adriana Pereira de Souza
- Departamento de Fisiologia, Universidade Federal de São Paulo, Rua Botucatu, 862 - 2 andar, Vila Clementino, São Paulo, SP 04023-062 Brazil
| | - Amanda Paula Pedroso
- Departamento de Fisiologia, Universidade Federal de São Paulo, Rua Botucatu, 862 - 2 andar, Vila Clementino, São Paulo, SP 04023-062 Brazil
| | - Regina Lúcia Harumi Watanabe
- Departamento de Fisiologia, Universidade Federal de São Paulo, Rua Botucatu, 862 - 2 andar, Vila Clementino, São Paulo, SP 04023-062 Brazil
| | - Ana Paula Segantine Dornellas
- Departamento de Fisiologia, Universidade Federal de São Paulo, Rua Botucatu, 862 - 2 andar, Vila Clementino, São Paulo, SP 04023-062 Brazil
| | - Valter Tadeu Boldarine
- Departamento de Fisiologia, Universidade Federal de São Paulo, Rua Botucatu, 862 - 2 andar, Vila Clementino, São Paulo, SP 04023-062 Brazil
| | - Helen Julie Laure
- Centro de Química de Proteínas - Hemocentro, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Claudia Maria Oller do Nascimento
- Departamento de Fisiologia, Universidade Federal de São Paulo, Rua Botucatu, 862 - 2 andar, Vila Clementino, São Paulo, SP 04023-062 Brazil
| | - Lila Missae Oyama
- Departamento de Fisiologia, Universidade Federal de São Paulo, Rua Botucatu, 862 - 2 andar, Vila Clementino, São Paulo, SP 04023-062 Brazil
| | - José Cesar Rosa
- Centro de Química de Proteínas - Hemocentro, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Eliane Beraldi Ribeiro
- Departamento de Fisiologia, Universidade Federal de São Paulo, Rua Botucatu, 862 - 2 andar, Vila Clementino, São Paulo, SP 04023-062 Brazil
| |
Collapse
|
3
|
Stoianov AM, Robson DL, Hetherington AM, Sawyez CG, Borradaile NM. Elongation Factor 1A-1 Is a Mediator of Hepatocyte Lipotoxicity Partly through Its Canonical Function in Protein Synthesis. PLoS One 2015; 10:e0131269. [PMID: 26102086 PMCID: PMC4478042 DOI: 10.1371/journal.pone.0131269] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 06/01/2015] [Indexed: 01/22/2023] Open
Abstract
Elongation factor 1A-1 (eEF1A-1) has non-canonical functions in regulation of the actin cytoskeleton and apoptosis. It was previously identified through a promoter-trap screen as a mediator of fatty acid-induced cell death (lipotoxicity), and was found to participate in this process downstream of ER stress. Since ER stress is implicated in the pathogenesis of nonalcoholic fatty liver disease (NAFLD), we investigated the mechanism of action of eEF1A-1 in hepatocyte lipotoxicity. HepG2 cells were exposed to excess fatty acids, followed by assessments of ER stress, subcellular localization of eEF1A-1, and cell death. A specific inhibitor of eEF1A-1 elongation activity, didemnin B, was used to determine whether its function in protein synthesis is involved in lipotoxicity. Within 6 h, eEF1A-1 protein was modestly induced by high palmitate, and partially re-localized from its predominant location at the ER to polymerized actin at the cell periphery. This early induction and subcellular redistribution of eEF1A-1 coincided with the onset of ER stress, and was later followed by cell death. Didemnin B did not prevent the initiation of ER stress by high palmitate, as indicated by eIF2α phosphorylation. However, consistent with sustained inhibition of eEF1A-1-dependent elongation activity, didemnin B prevented the recovery of protein synthesis and increase in GRP78 protein that are normally associated with later phases of the response to ongoing ER stress. This resulted in decreased palmitate-induced cell death. Our data implicate eEF1A-1, and its function in protein synthesis, in hepatocyte lipotoxicity.
Collapse
Affiliation(s)
- Alexandra M. Stoianov
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5C1
| | - Debra L. Robson
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5C1
| | - Alexandra M. Hetherington
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5C1
| | - Cynthia G. Sawyez
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5C1
- Department of Medicine, Western University, London, ON, Canada, N6A 5C1
- Robarts Research Institute, Western University, London, ON, Canada, N6A 5C1
| | - Nica M. Borradaile
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5C1
- * E-mail:
| |
Collapse
|
4
|
Tsai PY, Chen SM, Chen HY, Li YC, Imai K, Hsu KY, Lee JA. Proteome analysis of altered proteins in streptozotocin-induced diabetic rat kidney using the fluorogenic derivatization-liquid chromatography-tandem mass spectrometry method. Biomed Chromatogr 2012; 27:382-9. [PMID: 22972526 DOI: 10.1002/bmc.2803] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Revised: 07/25/2012] [Accepted: 07/25/2012] [Indexed: 01/14/2023]
Abstract
To find new molecular markers for early diagnosis of diabetic nephropathy, we applied fluorogenic derivatization-liquid chromatography-tandem mass spectrometry to identify the differentially expressed proteins in the kidney of control and streptozotocin-induced diabetic rats. The Sprague-Dawley rats were injected with the sodium citrate buffer or streptozotocin and then killed after 1, 4, 12 and 24 weeks. The results showed that seven proteins were significantly changed after 1 week of injection. Only one protein had significantly changed after 4 weeks of injection. However, after 12 weeks of injection, the number of altered proteins rose to 10. After 24 weeks of injection, 18 proteins had altered significantly. Five common proteins were significantly altered at week 12 and 24 after injection, respectively. Importantly, these proteins appeared prior to microalbuminuria and may serve as new biomarkers that are able to improve early detection of and new drug development for diabetic-related nephropathy.
Collapse
Affiliation(s)
- Pei-Yun Tsai
- School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wuxing St, Taipei, 11031, Taiwan
| | | | | | | | | | | | | |
Collapse
|