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Yetkin-Arik B, Jansen SA, Varderidou-Minasian S, Westendorp B, Skarp KP, Altelaar M, Lindemans CA, Lorenowicz MJ. Mesenchymal stromal/stem cells promote intestinal epithelium regeneration after chemotherapy-induced damage. Stem Cell Res Ther 2024; 15:125. [PMID: 38679715 PMCID: PMC11057078 DOI: 10.1186/s13287-024-03738-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 04/20/2024] [Indexed: 05/01/2024] Open
Abstract
BACKGROUND Allogeneic hematopoietic stem cell transplantation (HSCT) is a curative treatment for leukemia and a range of non-malignant disorders. The success of the therapy is hampered by occurrence of acute graft-versus-host disease (aGvHD); an inflammatory response damaging recipient organs, with gut, liver, and skin being the most susceptible. Intestinal GvHD injury is often a life-threatening complication in patients unresponsive to steroid treatment. Allogeneic mesenchymal stromal/stem cell (MSC) infusions are a promising potential treatment for steroid-resistant aGvHD. Data from our institution and others demonstrate rescue of approximately 40-50% of aGvHD patients with MSCs in Phase I, II studies and minor side effects. Although promising, better understanding of MSC mode of action and patient response to MSC-based therapy is essential to improve this lifesaving treatment. METHODS Single cell human small intestine organoids were embedded in Matrigel, grown for 5 days and treated with busulfan for 48 h. Organoids damaged by treatment with busulfan or control organoids were co-cultured with 5000, 10,000, and 50,000 MSCs for 24 h, 48 h or 7 days and the analyses such as surface area determination, proliferation and apoptosis assessment, RNA sequencing and proteomics were performed. RESULTS Here, we developed a 3D co-culture model of human small intestinal organoids and MSCs, which allows to study the regenerative effects of MSCs on intestinal epithelium in a more physiologically relevant setting than existing in vitro systems. Using this model we mimicked chemotherapy-mediated damage of the intestinal epithelium. The treatment with busulfan, the chemotherapeutic commonly used as conditioning regiment before the HSCT, affected pathways regulating epithelial to mesenchymal transition, proliferation, and apoptosis in small intestinal organoids, as shown by transcriptomic and proteomic analysis. The co-culture of busulfan-treated intestinal organoids with MSCs reversed the effects of busulfan on the transcriptome and proteome of intestinal epithelium, which we also confirmed by functional evaluation of proliferation and apoptosis. CONCLUSIONS Collectively, we demonstrate that our in vitro co-culture system is a new valuable tool to facilitate the investigation of the molecular mechanisms behind the therapeutic effects of MSCs on damaged intestinal epithelium. This could benefit further optimization of the use of MSCs in HSCT patients.
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Affiliation(s)
- B Yetkin-Arik
- Center for Molecular Medicine, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG, Utrecht, The Netherlands
- Regenerative Medicine Center, Uppsalalaan 8, 3584 CT, Utrecht, The Netherlands
- Centre for Living Technologies, Alliance TU/E, WUR, UU, UMC Utrecht, Princetonlaan 6, 3584 CB, Utrecht, The Netherlands
| | - S A Jansen
- Regenerative Medicine Center, Uppsalalaan 8, 3584 CT, Utrecht, The Netherlands
- Division of Pediatrics, University Medical Center Utrecht, Utrecht, The Netherlands
- Pediatric Stem Cell Transplantation, Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
| | - S Varderidou-Minasian
- Center for Molecular Medicine, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG, Utrecht, The Netherlands
- Regenerative Medicine Center, Uppsalalaan 8, 3584 CT, Utrecht, The Netherlands
| | - B Westendorp
- Regenerative Medicine Center, Uppsalalaan 8, 3584 CT, Utrecht, The Netherlands
- Division Cell Biology, Metabolism and Cancer, Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - K-P Skarp
- Biomedical Primate Research Center, Lange Kleiweg 161, 2288 GJ, Rijswijk, The Netherlands
| | - M Altelaar
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research, and Utrecht Institute For Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - C A Lindemans
- Regenerative Medicine Center, Uppsalalaan 8, 3584 CT, Utrecht, The Netherlands
- Division of Pediatrics, University Medical Center Utrecht, Utrecht, The Netherlands
- Pediatric Stem Cell Transplantation, Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
| | - M J Lorenowicz
- Center for Molecular Medicine, University Medical Center Utrecht, Universiteitsweg 100, 3584 CG, Utrecht, The Netherlands.
- Regenerative Medicine Center, Uppsalalaan 8, 3584 CT, Utrecht, The Netherlands.
- Biomedical Primate Research Center, Lange Kleiweg 161, 2288 GJ, Rijswijk, The Netherlands.
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Zhao Y, Hu X, Yu H, Liu X, Sun H, Shao C. Alternations of gene expression in PI3K and AR pathways and DNA methylation features contribute to metastasis of prostate cancer. Cell Mol Life Sci 2022; 79:436. [PMID: 35864178 PMCID: PMC11072339 DOI: 10.1007/s00018-022-04456-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/18/2022] [Accepted: 06/28/2022] [Indexed: 11/03/2022]
Abstract
OBJECTIVE The molecular heterogeneity of prostate cancer (PCa) gives rise to distinct tumor subclasses based on epigenetic modification and gene expression signatures. Identification of clinically actionable molecular subtypes of PCa is key to improving patient outcome, and the balance between specific pathways may influence PCa outcome. It is also urgent to identify progression-related markers through cytosine-guanine (CpG) methylation in predicting metastasis for patients with PCa. METHODS We performed bioinformatics analysis of transcriptomic, and clinical data in an integrated cohort of 551 prostate samples. The datasets included retrospective The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) cohorts. Two algorithms, Least Absolute Shrinkage and Selector Operation and Support Vector Machine-Recursive Feature Elimination, were used to select significant CpGs. RESULTS We found that PCa progression is more likely to occur after the third year through conditional survival (CS) analysis, and prostate-specific antigen (PSA) was a better predictor of Progression-free survival (PFS) than Gleason score (GS). Our study first demonstrated that PCa tumors have distinct expression profiles based on the expression of genes involved in androgen receptor (AR) and PI3K-AKT, which influence disease outcome. Our results also indicated that there are multiple phenotypes relevant to the AR-PI3K axis in PCa, where tumors with mixed phenotype may be more aggressive or have worse outcome than quiescent phenotype. In terms of epigenetics, we obtained CpG sites and their corresponding genes which have a good predictive value of PFS. However, various evidences showed that the predictive value of CpGs corresponding genes was much lower than GpG sites in Overall survival (OS) and PFS. CONCLUSIONS PCa classification specific to AR and PI3K pathways provides novel biological insight into previously established PCa subtypes and may help develop personalized therapies. Our results support the potential clinical utility of DNA methylation signatures to distinguish tumor metastasis and to predict prognosis and outcomes.
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Affiliation(s)
- Yue Zhao
- Department of Urology, School of Medicine, Xiang'an Hospital of Xiamen University, Xiamen University, Xiamen, 361000, China
| | - Xin Hu
- School of Life Science and Technology, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150001, China
| | - Haoran Yu
- School of Life Science and Technology, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150001, China
| | - Xin Liu
- School of Life Science and Technology, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150001, China
| | - Huimin Sun
- Department of Urology, School of Medicine, Xiang'an Hospital of Xiamen University, Xiamen University, Xiamen, 361000, China
| | - Chen Shao
- Department of Urology, School of Medicine, Xiang'an Hospital of Xiamen University, Xiamen University, Xiamen, 361000, China.
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Fry MY, Saladi SM, Clemons WM. The STI1-domain is a flexible alpha-helical fold with a hydrophobic groove. Protein Sci 2021; 30:882-898. [PMID: 33620121 PMCID: PMC7980504 DOI: 10.1002/pro.4049] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/17/2021] [Accepted: 02/18/2021] [Indexed: 01/05/2023]
Abstract
STI1-domains are present in a variety of co-chaperone proteins and are required for the transfer of hydrophobic clients in various cellular processes. The domains were first identified in the yeast Sti1 protein where they were referred to as DP1 and DP2. Based on hidden Markov model searches, this domain had previously been found in other proteins including the mammalian co-chaperone SGTA, the DNA damage response protein Rad23, and the chloroplast import protein Tic40. Here, we refine the domain definition and carry out structure-based sequence alignment of STI1-domains showing conservation of five amphipathic helices. Upon examinations of these identified domains, we identify a preceding helix 0 and unifying sequence properties, determine new molecular models, and recognize that STI1-domains nearly always occur in pairs. The similarity at the sequence, structure, and molecular levels likely supports a unified functional role.
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Affiliation(s)
- Michelle Y. Fry
- Division of Chemistry and Chemical EngineeringCalifornia Institute of TechnologyPasadenaCaliforniaUSA
| | - Shyam M. Saladi
- Division of Chemistry and Chemical EngineeringCalifornia Institute of TechnologyPasadenaCaliforniaUSA
| | - William M. Clemons
- Division of Chemistry and Chemical EngineeringCalifornia Institute of TechnologyPasadenaCaliforniaUSA
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4
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Lin KF, Fry MY, Saladi SM, Clemons WM. Molecular basis of tail-anchored integral membrane protein recognition by the cochaperone Sgt2. J Biol Chem 2021; 296:100441. [PMID: 33610544 PMCID: PMC8010706 DOI: 10.1016/j.jbc.2021.100441] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 02/04/2021] [Accepted: 02/17/2021] [Indexed: 02/08/2023] Open
Abstract
The targeting and insertion of tail-anchored (TA) integral membrane proteins (IMPs) into the correct membrane is critical for cellular homeostasis. The fungal protein Sgt2, and its human homolog SGTA, is the entry point for clients to the guided entry of tail-anchored protein (GET) pathway, which targets endoplasmic reticulum-bound TA IMPs. Consisting of three structurally independent domains, the C terminus of Sgt2 binds to the hydrophobic transmembrane domain (TMD) of clients. However, the exact binding interface within Sgt2 and molecular details that underlie its binding mechanism and client preference are not known. Here, we reveal the mechanism of Sgt2 binding to hydrophobic clients, including TA IMPs. Through sequence analysis, biophysical characterization, and a series of capture assays, we establish that the Sgt2 C-terminal domain is flexible but conserved and sufficient for client binding. A molecular model for this domain reveals a helical hand forming a hydrophobic groove approximately 15 Å long that is consistent with our observed higher affinity for client TMDs with a hydrophobic face and a minimal length of 11 residues. This work places Sgt2 into a broader family of TPR-containing cochaperone proteins, demonstrating structural and sequence-based similarities to the DP domains in the yeast Hsp90 and Hsp70 coordinating protein, Sti1.
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Affiliation(s)
- Ku-Feng Lin
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California, USA
| | - Michelle Y Fry
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California, USA
| | - Shyam M Saladi
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California, USA
| | - William M Clemons
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California, USA.
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Hoter A, Rizk S, Naim HY. The Multiple Roles and Therapeutic Potential of Molecular Chaperones in Prostate Cancer. Cancers (Basel) 2019; 11:cancers11081194. [PMID: 31426412 PMCID: PMC6721600 DOI: 10.3390/cancers11081194] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/14/2019] [Accepted: 08/15/2019] [Indexed: 12/19/2022] Open
Abstract
Prostate cancer (PCa) is one of the most common cancer types in men worldwide. Heat shock proteins (HSPs) are molecular chaperones that are widely implicated in the pathogenesis, diagnosis, prognosis, and treatment of many cancers. The role of HSPs in PCa is complex and their expression has been linked to the progression and aggressiveness of the tumor. Prominent chaperones, including HSP90 and HSP70, are involved in the folding and trafficking of critical cancer-related proteins. Other members of HSPs, including HSP27 and HSP60, have been considered as promising biomarkers, similar to prostate-specific membrane antigen (PSMA), for PCa screening in order to evaluate and monitor the progression or recurrence of the disease. Moreover, expression level of chaperones like clusterin has been shown to correlate directly with the prostate tumor grade. Hence, targeting HSPs in PCa has been suggested as a promising strategy for cancer therapy. In the current review, we discuss the functions as well as the role of HSPs in PCa progression and further evaluate the approach of inhibiting HSPs as a cancer treatment strategy.
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Affiliation(s)
- Abdullah Hoter
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
- Department of Physiological Chemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany
| | - Sandra Rizk
- School of Arts and Sciences, Lebanese American University, Beirut 1102 2801, Lebanon
| | - Hassan Y Naim
- Department of Physiological Chemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany.
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[MicroRNA-138 regulates cell adhesion-mediated drug resistance phenotype by targeting SGTA in non-Hodgkin's lymphoma]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2019; 39:668-673. [PMID: 30180469 PMCID: PMC7342837 DOI: 10.3760/cma.j.issn.0253-2727.2018.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
目的 分析microRNA-138(miR-138)靶向调节小谷氨酰胺三角四肽重复区蛋白α(SGTA)对非霍奇金淋巴瘤(NHL)细胞黏附介导的耐药(cell adhesion-mediated drug resistance, CAM-DR)的影响。 方法 以HS-5细胞或纤连蛋白(FN)构建NHL细胞黏附模型;Western blotting与RQ-PCR分析miR-138对SGTA蛋白及mRNA表达的影响;双荧光素酶报告基因活性检测分析miR-138对SGTA mRNA 3′UTR活性的影响;分别用miR-138下调慢病毒载体(Lv-shmiR-138)、miR-138过表达慢病毒载体(Lv-miR-138)、对照慢病毒载体(Lv-Ctrl)感染Daudi及OCI-Ly8细胞,分析miR-138对细胞周期、黏附能力及CAM-DR的影响;收集35例弥漫大B细胞淋巴瘤患者的石蜡组织标本,分析miR-138的表达情况及其与疾病进展和耐药关系。 结果 ①NHL细胞与FN或HS-5细胞黏附培养后miR-138表达水平显著高于悬浮培养组(P值均<0.05)。②下调miR-138的表达可增强SGTA蛋白的表达水平(P值均<0.05),而对SGTA mRNA的表达水平无显著影响(P值均>0.05)。③转染野生型SGTA 3′UTR载体时,过表达miR-138可显著抑制荧光素酶报告基因活性(0.73±0.03对1.00±0.02,t=0.914,P=0.002);而转染结合位点突变的突变型载体时,过表达miR-138不能显著改变报告基因活性(0.93±0.04对1.00±0.02,t=1.375,P=0.241)。④在悬浮及黏附培养状态下,过表达miR-138可显著诱导Daudi及OCI-Ly8细胞G1期停滞(P值均<0.05)。⑤下调miR-138的表达对Daudi及OCI-Ly8细胞的黏附能力均无显著影响(P值均>0.05)。⑥在悬浮培养状态下调miR-138的表达时,多柔比星诱导细胞死亡的比例显著下降,而在黏附培养状态下调miR-138的表达,多柔比星诱导细胞死亡的比例显著上升(P值均<0.05)。⑦miR-138在进展及稳定患者中的表达水平显著高于完全缓解以及部分缓解患者,差异具有统计学意义(9.72±1.11对3.06±0.22,t=9.144,P<0.001)。 结论 在黏附微环境中miR-138可通过靶向抑制SGTA诱导细胞周期G1期停滞促进CAM-DR进程。
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7
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Benarroch R, Austin JM, Ahmed F, Isaacson RL. The roles of cytosolic quality control proteins, SGTA and the BAG6 complex, in disease. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2019; 114:265-313. [PMID: 30635083 PMCID: PMC7102839 DOI: 10.1016/bs.apcsb.2018.11.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
SGTA is a co-chaperone that, in collaboration with the complex of BAG6/UBL4A/TRC35, facilitates the biogenesis and quality control of hydrophobic proteins, protecting them from the aqueous cytosolic environment. This work includes targeting tail-anchored proteins to their resident membranes, sorting of membrane and secretory proteins that mislocalize to the cytoplasm and endoplasmic reticulum-associated degradation of misfolded proteins. Since these functions are all vital for the cell's continued proteostasis, their disruption poses a threat to the cell, with a particular risk of protein aggregation, a phenomenon that underpins many diseases. Although the specific disease implications of machinery involved in quality control of hydrophobic substrates are poorly understood, here we summarize much of the available information on this topic.
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Affiliation(s)
- Rashi Benarroch
- Department of Chemistry, King's College London, London, United Kingdom
| | - Jennifer M Austin
- Department of Chemistry, King's College London, London, United Kingdom
| | - Fahmeda Ahmed
- Department of Chemistry, King's College London, London, United Kingdom
| | - Rivka L Isaacson
- Department of Chemistry, King's College London, London, United Kingdom.
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Kato Y, Ochiai K, Kawakami S, Nakao N, Azakami D, Bonkobara M, Michishita M, Morimatsu M, Watanabe M, Omi T. Canine REIC/Dkk-3 interacts with SGTA and restores androgen receptor signalling in androgen-independent prostate cancer cell lines. BMC Vet Res 2017; 13:170. [PMID: 28599655 PMCID: PMC5466802 DOI: 10.1186/s12917-017-1094-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 06/05/2017] [Indexed: 01/25/2023] Open
Abstract
Background The pathological condition of canine prostate cancer resembles that of human androgen-independent prostate cancer. Both canine and human androgen receptor (AR) signalling are inhibited by overexpression of the dimerized co-chaperone small glutamine-rich tetratricopeptide repeat-containing protein α (SGTA), which is considered to cause the development of androgen-independency. Reduced expression in immortalised cells (REIC/Dkk-3) interferes with SGTA dimerization and rescues AR signalling. This study aimed to assess the effects of REIC/Dkk-3 and SGTA interactions on AR signalling in the canine androgen-independent prostate cancer cell line CHP-1. Results Mammalian two-hybrid and Halo-tagged pull-down assays showed that canine REIC/Dkk-3 interacted with SGTA and interfered with SGTA dimerization. Additionally, reporter assays revealed that canine REIC/Dkk-3 restored AR signalling in both human and canine androgen-independent prostate cancer cells. Therefore, we confirmed the interaction between canine SGTA and REIC/Dkk-3, as well as their role in AR signalling. Conclusions Our results suggest that this interaction might contribute to the development of a novel strategy for androgen-independent prostate cancer treatment. Moreover, we established the canine androgen-independent prostate cancer model as a suitable animal model for the study of this type of treatment-refractory human cancer. Electronic supplementary material The online version of this article (doi:10.1186/s12917-017-1094-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yuiko Kato
- School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, 180-8602, Japan
| | - Kazuhiko Ochiai
- School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, 180-8602, Japan.
| | - Shota Kawakami
- School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, 180-8602, Japan
| | - Nobuhiro Nakao
- Laboratory of Animal Physiology, School of Animal Science, Nippon Veterinary and Life Science University, Tokyo, 180-8602, Japan
| | - Daigo Azakami
- School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, 180-8602, Japan
| | - Makoto Bonkobara
- Department of Veterinary Clinical Pathology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, 180-8602, Japan
| | - Masaki Michishita
- Department of Veterinary Pathology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, 180-8602, Japan
| | - Masami Morimatsu
- Laboratory of Laboratory Animal Science and Medicine, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, 060-0818, Japan
| | - Masami Watanabe
- Department of Urology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700-8558, Japan
| | - Toshinori Omi
- School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, 180-8602, Japan.
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Ochiai K, Morimatsu M, Kato Y, Ishiguro-Oonuma T, Udagawa C, Rungsuriyawiboon O, Azakami D, Michishita M, Ariyoshi Y, Ueki H, Nasu Y, Kumon H, Watanabe M, Omi T. Tumor suppressor REIC/DKK-3 and co-chaperone SGTA: Their interaction and roles in the androgen sensitivity. Oncotarget 2016; 7:3283-96. [PMID: 26658102 PMCID: PMC4823106 DOI: 10.18632/oncotarget.6488] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 11/21/2015] [Indexed: 12/16/2022] Open
Abstract
REIC/DKK-3 is a tumor suppressor, however, its intracellular physiological functions and interacting molecules have not been fully clarified. Using yeast two-hybrid screening, we found that small glutamine-rich tetratricopeptide repeat-containing protein α (SGTA), known as a negative modulator of cytoplasmic androgen receptor (AR) signaling, is a novel interacting partner of REIC/DKK-3. Mammalian two-hybrid and pull-down assay results indicated that the SGTA-REIC/DKK-3 interaction involved the N-terminal regions of both REIC/DKK-3 and SGTA and that REIC/DKK-3 interfered with the dimerization of SGTA, which is a component of the AR complex and a suppressor of dynein motor-dependent AR transport and signaling. A reporter assay in human prostate cancer cells that displayed suppressed AR signaling by SGTA showed recovery of AR signaling by REIC/DKK-3 expression. Considering these results and our previous data that REIC/DKK-3 interacts with the dynein light chain TCTEX-1, we propose that the REIC/DKK-3 protein interferes with SGTA dimerization, promotes dynein-dependent AR transport and then upregulates AR signaling.
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Affiliation(s)
- Kazuhiko Ochiai
- Department of Veterinary Nursing and Technology, School of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo 180-8602, Japan
| | - Masami Morimatsu
- Laboratory of Laboratory Animal Science and Medicine, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan
| | - Yuiko Kato
- Department of Veterinary Nursing and Technology, School of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo 180-8602, Japan
| | - Toshina Ishiguro-Oonuma
- Department of Biological Resources, Integrated Center for Science, Ehime University, Ehime 791-0295, Japan
| | - Chihiro Udagawa
- Department of Veterinary Nursing and Technology, School of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo 180-8602, Japan
| | - Oumaporn Rungsuriyawiboon
- Department of Veterinary Technology Faculty of Veterinary Technology, Kasetsart University, Bangkok 10900, Thailand
| | - Daigo Azakami
- Department of Veterinary Nursing and Technology, School of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo 180-8602, Japan
| | - Masaki Michishita
- Department of Veterinary Pathology, School of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo 180-8602, Japan
| | - Yuichi Ariyoshi
- Department of Urology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Hideo Ueki
- Department of Urology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Yasutomo Nasu
- Department of Urology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Hiromi Kumon
- Department of Urology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Masami Watanabe
- Department of Urology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Toshinori Omi
- Department of Veterinary Nursing and Technology, School of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo 180-8602, Japan
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Philp LK, Day TK, Butler MS, Laven-Law G, Jindal S, Hickey TE, Scher HI, Butler LM, Tilley WD. Small Glutamine-Rich Tetratricopeptide Repeat-Containing Protein Alpha (SGTA) Ablation Limits Offspring Viability and Growth in Mice. Sci Rep 2016; 6:28950. [PMID: 27358191 PMCID: PMC4928056 DOI: 10.1038/srep28950] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 06/07/2016] [Indexed: 01/26/2023] Open
Abstract
Small glutamine-rich tetratricopeptide repeat-containing protein α (SGTA) has been implicated as a co-chaperone and regulator of androgen and growth hormone receptor (AR, GHR) signalling. We investigated the functional consequences of partial and full Sgta ablation in vivo using Cre-lox Sgta-null mice. Sgta(+/-) breeders generated viable Sgta(-/-) offspring, but at less than Mendelian expectancy. Sgta(-/-) breeders were subfertile with small litters and higher neonatal death (P < 0.02). Body size was significantly and proportionately smaller in male and female Sgta(-/-) (vs WT, Sgta(+/-) P < 0.001) from d19. Serum IGF-1 levels were genotype- and sex-dependent. Food intake, muscle and bone mass and adiposity were unchanged in Sgta(-/-). Vital and sex organs had normal relative weight, morphology and histology, although certain androgen-sensitive measures such as penis and preputial size, and testis descent, were greater in Sgta(-/-). Expression of AR and its targets remained largely unchanged, although AR localisation was genotype- and tissue-dependent. Generally expression of other TPR-containing proteins was unchanged. In conclusion, this thorough investigation of SGTA-null mutation reports a mild phenotype of reduced body size. The model's full potential likely will be realised by genetic crosses with other models to interrogate the role of SGTA in the many diseases in which it has been implicated.
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Affiliation(s)
- Lisa K. Philp
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Tanya K. Day
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Miriam S. Butler
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Geraldine Laven-Law
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Shalini Jindal
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Theresa E. Hickey
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | | | - Lisa M. Butler
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
- Freemason’s Foundation Centre for Men’s Health, School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Wayne D. Tilley
- Adelaide Prostate Cancer Research Centre and Dame Roma Mitchell Cancer Research Laboratories, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
- Freemason’s Foundation Centre for Men’s Health, School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
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11
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Azakami D, Nakahira R, Kato Y, Michishita M, Kobayashi M, Onozawa E, Bonkobara M, Kobayashi M, Takahashi K, Watanabe M, Ishioka K, Sako T, Ochiai K, Omi T. The canine prostate cancer cell line CHP-1 shows over-expression of the co-chaperone small glutamine-rich tetratricopeptide repeat-containing protein α. Vet Comp Oncol 2016; 15:557-562. [PMID: 26762899 DOI: 10.1111/vco.12199] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 10/27/2015] [Accepted: 10/28/2015] [Indexed: 12/17/2022]
Abstract
Although androgen therapy resistance and poor clinical outcomes are seen in most canine prostate cancer cases, there are only a few tools for analysing canine prostate cancer by using a cell biological approach. Therefore, to evaluate androgen-independent neoplastic cell growth, a new canine prostate cancer cell line (CHP-1) was established in this study. CHP-1 over-expressed the co-chaperone small glutamine-rich tetratricopeptide repeat-containing protein α (SGTA), which is over-expressed in human androgen-independent prostate cancer. The CHP-1 xenograft also showed SGTA over-expression. Although CHP-1 shows poor androgen receptor (AR) signalling upon dihydrotestosterone stimulation, forced expression of AR enabled evaluation of AR signalling. Taken together, these results suggest that CHP-1 will be a useful model for investigating the pathogenesis of androgen-dependent and androgen-independent canine prostate cancer.
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Affiliation(s)
- D Azakami
- School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - R Nakahira
- Department of Veterinary Pathology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Y Kato
- School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - M Michishita
- Department of Veterinary Pathology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - M Kobayashi
- Department of Veterinary Clinical Pathology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - E Onozawa
- School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - M Bonkobara
- Department of Veterinary Clinical Pathology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - M Kobayashi
- Department of Reproduction, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - K Takahashi
- Department of Veterinary Pathology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - M Watanabe
- Department of Urology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - K Ishioka
- School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - T Sako
- School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - K Ochiai
- School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - T Omi
- School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, Tokyo, Japan
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12
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Expression and prognostic role of SGTA in human breast carcinoma correlates with tumor cell proliferation. J Mol Histol 2014; 45:665-77. [PMID: 25027991 DOI: 10.1007/s10735-014-9586-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 07/08/2014] [Indexed: 12/16/2022]
Abstract
Small glutamine-rich tetratricopeptide repeat-containing protein alpha (SGTA) was reported to be implicated in various cellular processes and involved in control of cell cycle regulation and transcription. It may play a critical role in oncogenesis. In this study, to investigate the potential roles of SGTA in breast cancer, expression patterns, interaction and the correlation with clinical/prognostic factors of SGTA and Ki-67 were examined among patients with breast cancer. Immunohistochemistry and Western blot analysis were performed for SGTA in 100 breast carcinoma samples. The data were correlated with clinicopathological features. The univariate and multivariate survival analyses were also performed to determine the prognostic significance. We found that SGTA was overexpressed in breast carcinoma compared with the adjacent normal tissues. High expression of SGTA was positively associated with histological grade (P = 0.002) and Ki-67 (P = 0.001). Univariate analysis showed that SGTA expression was associated with a poor prognosis (P = 0.002). Kaplan-Meier survival curves of the study population showed that high expression level of SGTA significantly correlated with short-term survival. While in vitro, SGTA depletion by small interfering RNA inhibited cell proliferation and cell cycle in breast cancer cell lines. Western blot analyses showed that SGTA depletion decreased cyclin A, cyclin B and CDK2, whereas increased p27 levels. Additionally, treatment of phosphatidylinositol 3-kinase inhibitor LY294002 could arrest cells growth and diminish SGTA expression. These results suggested that SGTA overexpression was involved in the pathogenesis of breast cancer which might serve as a future target for novel treatment in breast cancer.
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13
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Paul A, Garcia YA, Zierer B, Patwardhan C, Gutierrez O, Hildenbrand Z, Harris DC, Balsiger HA, Sivils JC, Johnson JL, Buchner J, Chadli A, Cox MB. The cochaperone SGTA (small glutamine-rich tetratricopeptide repeat-containing protein alpha) demonstrates regulatory specificity for the androgen, glucocorticoid, and progesterone receptors. J Biol Chem 2014; 289:15297-308. [PMID: 24753260 DOI: 10.1074/jbc.m113.535229] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Steroid hormone receptors are ligand-dependent transcription factors that require the ordered assembly of multichaperone complexes for transcriptional activity. Although heat shock protein (Hsp) 90 and Hsp70 are key players in this process, multiple Hsp70- and Hsp90-associated cochaperones associate with receptor-chaperone complexes to regulate receptor folding and activation. Small glutamine-rich tetratricopeptide repeat-containing protein alpha (SGTA) was recently characterized as an Hsp70 and Hsp90-associated cochaperone that specifically regulates androgen receptor activity. However, the specificity of SGTA for additional members of the steroid hormone receptor superfamily and the mechanism by which SGTA regulates receptor activity remain unclear. Here we report that SGTA associates with and specifically regulates the androgen, glucocorticoid, and progesterone receptors and has no effect on the mineralocorticoid and estrogen receptors in both yeast and mammalian cell-based reporter assays. In both systems, SGTA knockdown/deletion enhances receptor activity, whereas SGTA overexpression suppresses receptor activity. We demonstrate that SGTA binds directly to Hsp70 and Hsp90 in vitro with similar affinities yet predominately precipitates with Hsp70 from cell lysates, suggesting a role for SGTA in early, Hsp70-mediated folding. Furthermore, SGTA expression completely abrogates the regulation of receptor function by FKBP52 (52-kDa FK506-binding protein), which acts at a later stage of the chaperone cycle. Taken together, our data suggest a role for SGTA at distinct steps in the chaperone-dependent modulation of androgen, glucocorticoid, and progesterone receptor activity.
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Affiliation(s)
- Atanu Paul
- From the Border Biomedical Research Center and Department of Biological Sciences and
| | - Yenni A Garcia
- From the Border Biomedical Research Center and Department of Biological Sciences and
| | - Bettina Zierer
- the Center for Integrated Protein Science at the Department Chemie, Technische Universität München, Garching, Germany
| | - Chaitanya Patwardhan
- the Cancer Research Center, Georgia Regents University, Augusta, Georgia 30912, and
| | - Omar Gutierrez
- From the Border Biomedical Research Center and Department of Biological Sciences and
| | - Zacariah Hildenbrand
- the Department of Chemistry, University of Texas at El Paso, El Paso, Texas 79968
| | - Diondra C Harris
- From the Border Biomedical Research Center and Department of Biological Sciences and
| | - Heather A Balsiger
- From the Border Biomedical Research Center and Department of Biological Sciences and
| | - Jeffrey C Sivils
- From the Border Biomedical Research Center and Department of Biological Sciences and
| | - Jill L Johnson
- the Department of Biological Sciences, University of Idaho, Moscow, Idaho 83844
| | - Johannes Buchner
- the Center for Integrated Protein Science at the Department Chemie, Technische Universität München, Garching, Germany
| | - Ahmed Chadli
- the Cancer Research Center, Georgia Regents University, Augusta, Georgia 30912, and
| | - Marc B Cox
- From the Border Biomedical Research Center and Department of Biological Sciences and
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