1
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Yunianto I, Currie M, Chitcholtan K, Sykes P. Potential drug repurposing of ruxolitinib to inhibit the JAK/STAT pathway for the treatment of patients with epithelial ovarian cancer. J Obstet Gynaecol Res 2023; 49:2563-2574. [PMID: 37565583 DOI: 10.1111/jog.15761] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 07/25/2023] [Indexed: 08/12/2023]
Abstract
AIM This review aimed to describe the potential for therapeutic targeting of the JAK/STAT signaling pathway by repurposing the clinically-approved JAK inhibitor ruxolitinib in the patients with epithelial ovarian cancer (OC) setting. METHODS We reviewed publications that focus on the inhibition of the JAK/STAT pathway in hematological and solid malignancies including OC. RESULTS Preclinical studies showed that ruxolitinib effectively reduces OC cell viability and metastasis and enhances the anti-tumor activity of chemotherapy drugs. There are a number of recent clinical trials exploring the role of JAK/STAT inhibition in solid cancers including OC. Early results have not adequately supported efficacy in solid tumors. However, there are preclinical data and clinical studies supporting the use of ruxolitinib in combination with both chemotherapy and other targeted drugs in OC setting. CONCLUSION Inflammatory conditions and persistent activation of the JAK/STAT pathway are associated with tumourigenesis and chemoresistance, and therapeutic blockade of this pathway shows promising results. For women with OC, clinical investigation exploring the role of ruxolitinib in combination with chemotherapy agents or other targeted therapeutics is warranted.
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Affiliation(s)
- Irfan Yunianto
- Department of Obstetrics and Gynaecology, University of Otago, Christchurch, New Zealand
- Department of Biology Education, Universitas Ahmad Dahlan, Indonesia
| | - Margaret Currie
- Department of Pathology and Biomedical Sciences, University of Otago, Christchurch, New Zealand
| | - Kenny Chitcholtan
- Department of Obstetrics and Gynaecology, University of Otago, Christchurch, New Zealand
| | - Peter Sykes
- Department of Obstetrics and Gynaecology, University of Otago, Christchurch, New Zealand
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2
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Expression, Purification and Crystallization of Asrij, A Novel Scaffold Transmembrane Protein. J Membr Biol 2021; 254:65-74. [PMID: 33433647 DOI: 10.1007/s00232-020-00166-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 12/17/2020] [Indexed: 10/22/2022]
Abstract
Asrij/OCIAD1 is a scaffold transmembrane protein belonging to the Ovarian Carcinoma Immunoreactive Antigen Domain containing protein family. In Drosophila and mouse models, Asrij localizes at the endosomal and mitochondrial membrane and is shown to regulate the stemness of hematopoietic stem cells. Interaction of Asrij with ADP Ribosylation Factor 1 (Arf1) is shown to be crucial for hematopoietic niche function and prohemocyte maintenance. Here, we report the heterologous expression, standardization of detergents and purification methodologies for crystallization of Asrij/OCIAD1. To probe the activity of bacterially expressed Asrij, we developed a protein complementation assay and conclusively show that Asrij and Arf1 physically interact. Further, we find that sophorolipids improve the solubility and monodispersibility of Asrij. Hence, we propose that sophorolipids could be novel additives for stabilization of membrane proteins. To our knowledge, this is the first study detailing methodology for the production and crystallization of a heterologously expressed scaffold membrane protein and will be widely applicable to understand membrane protein structure and function.
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3
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Dickson P, Abegg D, Vinogradova E, Takaya J, An H, Simanski S, Cravatt BF, Adibekian A, Kodadek T. Physical and Functional Analysis of the Putative Rpn13 Inhibitor RA190. Cell Chem Biol 2020; 27:1371-1382.e6. [PMID: 32857985 DOI: 10.1016/j.chembiol.2020.08.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 05/22/2020] [Accepted: 08/07/2020] [Indexed: 12/12/2022]
Abstract
Rpn13 is one of several ubiquitin receptors in the 26S proteasome. Cys88 of Rpn13 has been proposed to be the principal target of RA190, an electrophilic small molecule with interesting anti-cancer activities. Here, we examine the claim that RA190 mediates its cytotoxic effects through engagement with Rpn13. We find no evidence that this is the case. In vitro, RA190 is has no measurable effect on any of the known interactions of Rpn13. In cellulo, we see no physical engagement of Rpn13 by RA190, either on C88 or any other residue. However, chemical proteomics experiments in two different cell lines reveal that dozens of other proteins are heavily engaged by RA190. Finally, increasing or reducing the level of Rpn13 in HeLa and melanoma cells had no effect on the sensitivity of HeLa or melanoma cells to RA190. We conclude that Rpn13 is not the physiologically relevant target of RA190.
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Affiliation(s)
- Paige Dickson
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA
| | - Daniel Abegg
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA
| | - Ekaterina Vinogradova
- Department of Molecular Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Junichiro Takaya
- Department of Molecular Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Hongchan An
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA
| | - Scott Simanski
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA
| | - Benjamin F Cravatt
- Department of Molecular Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Alexander Adibekian
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA
| | - Thomas Kodadek
- Department of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA.
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4
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Geertsma HM, Rousseaux MWC. Convergent systems-based approaches identify a role for OCIAD1 in Alzheimer's disease. EBioMedicine 2020; 52:102627. [PMID: 31981980 PMCID: PMC6976923 DOI: 10.1016/j.ebiom.2020.102627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 01/02/2020] [Indexed: 12/16/2022] Open
Affiliation(s)
- Haley M Geertsma
- Neuroscience Program, University of Ottawa, Canada; Department of Cellular and Molecular Medicine, University of Ottawa, Canada
| | - Maxime W C Rousseaux
- Department of Cellular and Molecular Medicine, University of Ottawa, Canada; University of Ottawa Brain and Mind Research Institute, Canada; Ottawa Institute of Systems Biology, Canada.
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5
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Li X, Wang L, Cykowski M, He T, Liu T, Chakranarayan J, Rivera A, Zhao H, Powell S, Xia W, Wong STC. OCIAD1 contributes to neurodegeneration in Alzheimer's disease by inducing mitochondria dysfunction, neuronal vulnerability and synaptic damages. EBioMedicine 2020; 51:102569. [PMID: 31931285 PMCID: PMC6957876 DOI: 10.1016/j.ebiom.2019.11.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 11/10/2019] [Accepted: 11/19/2019] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Hyperamyloidosis in the brain is known as the earliest neuropathological change and a unique etiological factor in Alzheimer's disease (AD), while progressive neurodegeneration in certain vulnerable brain regions forms the basis of clinical syndromes. It is not clear how early hyperamyloidosis is implicated in progressive neurodegeneration and what factors contribute to the selective brain vulnerability in AD. METHODS Bioinformatics and experimental neurobiology methods were integrated to identify novel factors involved in the hyperamyloidosis-induced brain vulnerability in AD. We first examined neurodegeneration-specific gene signatures from sporadic AD patients and synaptic protein changes in young transgenic AD mice. Then, we systematically assessed the association of a top candidate gene with AD and investigated its mechanistic role in neurodegeneration. FINDINGS We identified the ovary-orientated protein OCIAD1 (Ovarian-Carcinoma-Immunoreactive-Antigen-Domain-Containing-1) as a neurodegeneration-associated factor for AD. Higher levels of OCIAD1, found in vulnerable brain areas and dystrophic neurites, were correlated with disease severity. Multiple early AD pathological events, particularly Aβ/GSK-3β signaling, elevate OCIAD1, which in turn interacts with BCL-2 to impair mitochondrial function and facilitates mitochondria-associated neuronal injury. Notably, elevated OCIAD1 by Aβ increases cell susceptibility to other AD pathological challenges. INTERPRETATION Our findings suggest that OCIAD1 contributes to neurodegeneration in AD by impairing mitochondria function, and subsequently leading to neuronal vulnerability, and synaptic damages. FUNDING Ting Tsung & Wei Fong Chao Foundation, John S Dunn Research Foundation, Cure Alzheimer's Fund, and NIH R01AG057635 to STCW.
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Affiliation(s)
- Xuping Li
- Ting Tsung & Wei Fong Chao Center for BRAIN, Weill Cornell Medicine, Houston Methodist Research Institute, 6670 Bertner Ave, Houston, TX 77030, USA.
| | - Lin Wang
- Department of Informatics Development, Houston Methodist Hospital, Houston, TX 77030, USA
| | - Matthew Cykowski
- Departments of Pathology and Genome Medicine, Weill Cornell Medicine, Houston Methodist Hospital, Houston, TX 77030, USA
| | - Tiancheng He
- Department of Informatics Development, Houston Methodist Hospital, Houston, TX 77030, USA
| | - Timothy Liu
- Ting Tsung & Wei Fong Chao Center for BRAIN, Weill Cornell Medicine, Houston Methodist Research Institute, 6670 Bertner Ave, Houston, TX 77030, USA
| | - Joshua Chakranarayan
- Ting Tsung & Wei Fong Chao Center for BRAIN, Weill Cornell Medicine, Houston Methodist Research Institute, 6670 Bertner Ave, Houston, TX 77030, USA
| | - Andreana Rivera
- Departments of Pathology and Genome Medicine, Weill Cornell Medicine, Houston Methodist Hospital, Houston, TX 77030, USA
| | - Hong Zhao
- Ting Tsung & Wei Fong Chao Center for BRAIN, Weill Cornell Medicine, Houston Methodist Research Institute, 6670 Bertner Ave, Houston, TX 77030, USA
| | - Suzanne Powell
- Departments of Pathology and Genome Medicine, Weill Cornell Medicine, Houston Methodist Hospital, Houston, TX 77030, USA
| | - Weiming Xia
- Ting Tsung & Wei Fong Chao Center for BRAIN, Weill Cornell Medicine, Houston Methodist Research Institute, 6670 Bertner Ave, Houston, TX 77030, USA; Geriatric Research Education Clinical Center, Edith Nourse Rogers Memorial Veterans Hospital, Bedford, MA 01730, USA; Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA 02118, USA
| | - Stephen T C Wong
- Ting Tsung & Wei Fong Chao Center for BRAIN, Weill Cornell Medicine, Houston Methodist Research Institute, 6670 Bertner Ave, Houston, TX 77030, USA; Department of Informatics Development, Houston Methodist Hospital, Houston, TX 77030, USA; Departments of Pathology and Genome Medicine, Weill Cornell Medicine, Houston Methodist Hospital, Houston, TX 77030, USA; Departments of Radiology, Weill Cornell Medicine, Houston Methodist Hospital, Houston, TX 77030, USA.
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6
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Ji W, Zheng K, Song B, Qin A, Chandoo A, Shao Z, Bi J, Yang X, Jin G, Shen X. OCIAD1 promoted pancreatic ductal adenocarcinoma migration by regulating ATM. Pancreatology 2019; 19:751-759. [PMID: 31221523 DOI: 10.1016/j.pan.2019.01.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 12/29/2018] [Accepted: 01/14/2019] [Indexed: 12/11/2022]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is an aggressive neoplastic disease, characterized with poor outcomes and a 5-year survival rate less than 5%. Dysregulation or dysfunction of immune response factors contribute to cancer development. In this study, we found that OCIAD1 is high expressed in pancreatic cancer gene chip, and verified OCIAD1 associating with cancer malignancy in specimens from patients with PDAC. OCIAD1 down-regulation inhibited PDAC cell lines migration and vice versa. Further analysis of pancreatic cancer gene chip found OCIAD1 high expression was associating with low ATM expression. Then we proved that OCIAD1 regulated ATM to affect the migration of PDAC. Thus we concluded that high OCIAD1 levels in PDAC promoted tumor cells migration. OCIAD1 exerted its effects by regulating ATM.
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Affiliation(s)
- Weiping Ji
- Department of General Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325003, China; Institute of Basic Medical, The Second Military Medical University, Shanghai 200433, China
| | - Kailian Zheng
- Department of General Surgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, China
| | - Bin Song
- Department of General Surgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, China
| | - Ancheng Qin
- Department of General Surgery, Suzhou Municipal Hospital & Suzhou Hospital Affiliated to Nanjing Medical University, Suzhou, Jiangsu, PR China
| | - Arvine Chandoo
- Department of General Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325003, China
| | - Zhuo Shao
- Department of General Surgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, China
| | - Jianwei Bi
- Department of General Surgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, China
| | - Xiangqun Yang
- Institute of Basic Medical, The Second Military Medical University, Shanghai 200433, China
| | - Gang Jin
- Department of General Surgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, China.
| | - Xian Shen
- Department of General Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang 325003, China.
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7
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Sakashita M, Sakashita S, Murata Y, Shiba-Ishii A, Kim Y, Matsuoka R, Nakano N, Sato Y, Noguchi M. High expression of ovarian cancer immunoreactive antigen domain containing 2 (OCIAD2) is associated with poor prognosis in lung adenocarcinoma. Pathol Int 2018; 68:596-604. [DOI: 10.1111/pin.12724] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 08/29/2018] [Indexed: 01/27/2023]
Affiliation(s)
- Mai Sakashita
- Doctoral Program in Biomedical Science; Graduate School of Comprehensive Human Sciences; University of Tsukuba; Ibaraki Japan
| | - Shingo Sakashita
- Faculty of Medicine; Department of Pathology; University of Tsukuba; Ibaraki Japan
| | - Yoshihiko Murata
- Faculty of Medicine; Department of Pathology; University of Tsukuba; Ibaraki Japan
| | - Aya Shiba-Ishii
- Faculty of Medicine; Department of Pathology; University of Tsukuba; Ibaraki Japan
| | - Yunjung Kim
- Faculty of Medicine; Department of Pathology; University of Tsukuba; Ibaraki Japan
| | - Ryota Matsuoka
- Faculty of Medicine; Department of Pathology; University of Tsukuba; Ibaraki Japan
| | - Noriyuki Nakano
- Faculty of Medicine; Department of Pathology; University of Tsukuba; Ibaraki Japan
| | - Yukio Sato
- Faculty of Medicine; Department of Thoracic Surgery; University of Tsukuba; Ibaraki Japan
| | - Masayuki Noguchi
- Faculty of Medicine; Department of Pathology; University of Tsukuba; Ibaraki Japan
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8
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Shetty DK, Kalamkar KP, Inamdar MS. OCIAD1 Controls Electron Transport Chain Complex I Activity to Regulate Energy Metabolism in Human Pluripotent Stem Cells. Stem Cell Reports 2018; 11:128-141. [PMID: 29937147 PMCID: PMC6067085 DOI: 10.1016/j.stemcr.2018.05.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Revised: 05/22/2018] [Accepted: 05/23/2018] [Indexed: 12/19/2022] Open
Abstract
Pluripotent stem cells (PSCs) derive energy predominantly from glycolysis and not the energy-efficient oxidative phosphorylation (OXPHOS). Differentiation is initiated with energy metabolic shift from glycolysis to OXPHOS. We investigated the role of mitochondrial energy metabolism in human PSCs using molecular, biochemical, genetic, and pharmacological approaches. We show that the carcinoma protein OCIAD1 interacts with and regulates mitochondrial complex I activity. Energy metabolic assays on live pluripotent cells showed that OCIAD1-depleted cells have increased OXPHOS and may be poised for differentiation. OCIAD1 maintains human embryonic stem cells, and its depletion by CRISPR/Cas9-mediated knockout leads to rapid and increased differentiation upon induction, whereas OCIAD1 overexpression has the opposite effect. Pharmacological alteration of complex I activity was able to rescue the defects of OCIAD1 modulation. Thus, hPSCs can exist in energy metabolic substates. OCIAD1 provides a target to screen for additional modulators of mitochondrial activity to promote transient multipotent precursor expansion or enhance differentiation. OCIAD1 regulates energy metabolism in human pluripotent stem cells OCIAD1 interacts with electron transport chain proteins and downregulates OXPHOS OCIAD1 regulates complex I activity and early mesodermal progenitor formation Pharmacological increase in complex I activity enhances stem cell differentiation
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Affiliation(s)
- Deeti K Shetty
- Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru 560064, India
| | - Kaustubh P Kalamkar
- Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru 560064, India
| | - Maneesha S Inamdar
- Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru 560064, India; Institute for Stem Cell Biology and Regenerative Medicine, Bengaluru 560065, India.
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9
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Cehofski LJ, Kruse A, Bøgsted M, Magnusdottir SO, Stensballe A, Honoré B, Vorum H. Retinal proteome changes following experimental branch retinal vein occlusion and intervention with ranibizumab. Exp Eye Res 2016; 152:49-56. [PMID: 27619476 DOI: 10.1016/j.exer.2016.09.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 08/07/2016] [Accepted: 09/08/2016] [Indexed: 01/28/2023]
Abstract
Animal models of experimental branch retinal vein occlusion (BRVO) provide a unique opportunity to study protein changes directly in retinal tissue. Results from these experimental models suggest that experimental BRVO is associated with an upregulation of extracellular matrix remodeling and adhesion signaling processes. To study whether these processes could be blocked by inhibition of VEGF-A, a porcine model of experimental BRVO was combined with proteomic analyses. In six Danish Landrace pigs experimental BRVO was induced with argon laser in both eyes. After 24 h an injection of 0.05 mL ranibizumab was given in the right eyes of the animals while left eyes received an injection of 0.05 mL 9 mg/mL sodium chloride water. Retinas were dissected three days after BRVO and the retinal samples were analyzed with label-free quantification as well as tandem mass tag based proteomics. In retinas treated with ranibizumab five proteins exhibited statistically significant changes in content with both proteomic techniques. These five proteins, which were all decreased in content, included integrin β-1, peroxisomal 3-ketoacyl-CoA thiolase, OCIA domain-containing protein 1, calnexin and 40S ribosomal protein S5. As anti-integrin therapies are under development for inhibition of angiogenesis in retinal diseases it is interesting that inhibition of VEGF-A in itself resulted in a small decrease in the content of integrin β-1. The decreased content of integrin β-1 indicates that extracellular matrix remodeling and adhesion processes associated with BRVO are at least partly reversed through inhibition of VEGF-A.
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Affiliation(s)
- Lasse Jørgensen Cehofski
- Department of Ophthalmology, Aalborg University Hospital, Aalborg, Denmark; Biomedical Research Laboratory, Aalborg University Hospital, Aalborg, Denmark; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.
| | - Anders Kruse
- Department of Ophthalmology, Aalborg University Hospital, Aalborg, Denmark
| | - Martin Bøgsted
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark; Department of Haematology, Aalborg University Hospital, Aalborg, Denmark
| | | | - Allan Stensballe
- Department of Health Science and Technology, Aalborg University, Denmark
| | - Bent Honoré
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark; Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Henrik Vorum
- Department of Ophthalmology, Aalborg University Hospital, Aalborg, Denmark; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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10
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Ovarian cancer microenvironment: implications for cancer dissemination and chemoresistance acquisition. Cancer Metastasis Rev 2015; 33:17-39. [PMID: 24357056 DOI: 10.1007/s10555-013-9456-2] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Ovarian adenocarcinoma is characterized by a late detection, dissemination of cancer cells into the whole peritoneum, and the frequent acquisition of chemoresistance. If these particularities can be explained in part by intrinsic properties of ovarian cancer cells, an increased number of studies show the importance of the tumor microenvironment in tumor progression. Ovarian cancer cells can regulate the composition of their stroma in promoting the formation of ascitic fluid, rich in cytokines and bioactive lipids, and in stimulating the differentiation of stromal cells into a pro-tumoral phenotype. In return, cancer-associated fibroblasts, cancer-associated mesenchymal stem cells, tumor-associated macrophages, or other peritoneal cells, such as adipocytes and mesothelial cells can regulate tumor growth, angiogenesis, dissemination, and chemoresistance. This review focuses on the current knowledge about the roles of stromal cells and the associated secreted factors on tumor progression. We also summarize the different studies showing that targeting the microenvironment represents a great potential for improving the prognosis of patients with ovarian adenocarcinoma.
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11
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Sinha A, Khadilkar RJ, S VK, Roychowdhury Sinha A, Inamdar MS. Conserved regulation of the Jak/STAT pathway by the endosomal protein asrij maintains stem cell potency. Cell Rep 2013; 4:649-58. [PMID: 23972987 PMCID: PMC4673900 DOI: 10.1016/j.celrep.2013.07.029] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2012] [Revised: 05/18/2013] [Accepted: 07/18/2013] [Indexed: 11/17/2022] Open
Abstract
Asrij/OCIAD1 is an endosomal protein expressed in stem cells and cardiovascular lineages and aberrantly expressed in several cancers. We show that dose-dependent modulation of cytokine-dependent JAK/STAT signaling by Asrij regulates mouse embryonic stem cell pluripotency as well as Drosophila hematopoietic stem cell maintenance. Furthermore, mouse asrij can substitute for Drosophila asrij, indicating that they are true homologs. We identify a conserved region of Asrij that is necessary and sufficient for vesicular localization and function. We also show that Asrij and STAT3 colocalize in endosomes and interact biochemically. We propose that Asrij provides an endosomal scaffold for STAT3 interaction and activation, and may similarly control other circuits that maintain stemness. Thus, Asrij provides a key point of control for spatial and kinetic regulation of stem cell signals.
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Affiliation(s)
- Abhishek Sinha
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560064, India
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12
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Simultaneous structure-activity studies and arming of natural products by C-H amination reveal cellular targets of eupalmerin acetate. Nat Chem 2013; 5:510-7. [PMID: 23695633 DOI: 10.1038/nchem.1653] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Accepted: 04/11/2013] [Indexed: 12/31/2022]
Abstract
Natural products have a venerable history of, and enduring potential for the discovery of useful biological activity. To fully exploit this, the development of chemical methodology that can functionalize unique sites within these complex structures is highly desirable. Here, we describe the use of rhodium(II)-catalysed C-H amination reactions developed by Du Bois to carry out simultaneous structure-activity relationship studies and arming (alkynylation) of natural products at 'unfunctionalized' positions. Allylic and benzylic C-H bonds in the natural products undergo amination while olefins undergo aziridination, and tertiary amine-containing natural products are converted to amidines by a C-H amination-oxidation sequence or to hydrazine sulfamate zwitterions by an unusual N-amination. The alkynylated derivatives are ready for conversion into cellular probes that can be used for mechanism-of-action studies. Chemo- and site-selectivity was studied with a diverse library of natural products. For one of these-the marine-derived anticancer diterpene, eupalmerin acetate-quantitative proteome profiling led to the identification of several protein targets in HL-60 cells, suggesting a polypharmacological mode of action.
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13
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Yang AH, Chau YP, Lee CH, Chen JY, Chen JY, Ke CC, Liu RS. The influence of neural cell adhesion molecule isoform 140 on the metastasis of thyroid carcinoma. Clin Exp Metastasis 2012; 30:299-307. [PMID: 23015367 DOI: 10.1007/s10585-012-9537-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Accepted: 09/14/2012] [Indexed: 01/06/2023]
Abstract
We previously showed that the preservation of neural adhesion molecule (NCAM) in differentiated thyroid carcinoma is an important indicator for a higher risk of distant metastasis. In the present study, we further demonstrated that forced NCAM-140 isoform expression in human thyroid cancer cells could lead to aggressive growth by enhancing migration and anchorage-independent growth, and exhibiting partial features of epithelial mesenchymal transition. More extensive distant metastasis was also noted in an animal xenograft model when NCAM-expressing thyroid cancer cells were introduced into mice intravascularly. Bioinformatic analysis of NCAM-associated expression profiles predicted a highly interactive protein network, which further implies potential molecular mechanisms underlying the metastatic processes of thyroid cancer.
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Affiliation(s)
- An-Hang Yang
- Department of Pathology, Taipei Veterans General Hospital, Rm. 6047, Medical Technology Building, Taipei, 11217, Taiwan.
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14
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Nagata C, Kobayashi H, Sakata A, Satomi K, Minami Y, Morishita Y, Ohara R, Yoshikawa H, Arai Y, Nishida M, Noguchi M. Increased expression of OCIA domain containing 2 during stepwise progression of ovarian mucinous tumor. Pathol Int 2012; 62:471-6. [PMID: 22726067 DOI: 10.1111/j.1440-1827.2012.02825.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Ovarian cancer immunoreactive antigen domain containing 2 (OCIAD2) has been reported to show cancer-specific expression in early invasive lung adenocarcinoma. OCIAD2 shows high homology with OCIAD1, which was originally immunoscreened from ascites of a patient with ovarian cancer and found to be a tumor-specific protein. Therefore, like OCIAD1, OCIAD2 is expected to show high immunoreactivity in ovarian tumors. In this study, we examined the expression pattern of OCIAD2 in 117 ovarian mucinous tumors, and confirmed that it was more highly expressed in borderline tumor and carcinoma (51/74 cases, 69%) than in adenoma (6/43 cases, 14%). The immunoreactivity of OCIAD2 in borderline tumor and carcinoma was more specific than that of OCIAD1 (adenoma, 21/43 cases, 49%), and more sensitive than that of CEA (borderline tumor and carcinoma, 35/74 cases, 47%). Like OCIAD1, OCIAD2 is a cancer-related protein and its expression level increases during the course of malignant progression and is thought to be a very useful marker for evaluating the malignancy of ovarian mucinous tumors.
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Affiliation(s)
- Chigusa Nagata
- Department of Pathology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
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15
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Kulkarni V, Khadilkar RJ, M. S. S, Inamdar MS. Asrij maintains the stem cell niche and controls differentiation during Drosophila lymph gland hematopoiesis. PLoS One 2011; 6:e27667. [PMID: 22110713 PMCID: PMC3215734 DOI: 10.1371/journal.pone.0027667] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2011] [Accepted: 10/21/2011] [Indexed: 02/02/2023] Open
Abstract
Several signaling pathways control blood cell (hemocyte) development in the Drosophila lymph gland. Mechanisms that modulate and integrate these signals are poorly understood. Here we report that mutation in a conserved endocytic protein Asrij affects signal transmission and causes aberrant lymph gland hematopoiesis. Mammalian Asrij (Ociad1) is expressed in stem cells of the blood vascular system and is implicated in several cancers. We found that Drosophila Asrij is a pan-hemocyte marker and localizes to a subset of endocytic vesicles. Loss of asrij causes hyperproliferation of lymph gland lobes coupled with increased hemocyte differentiation, thereby depleting the pool of quiescent hemocyte precursors. This co-relates with fewer Col+ cells in the hematopoietic stem cell niche of asrij mutants. Asrij null mutants also show excess specification of crystal cells that express the RUNX factor Lozenge (Lz), a target of Notch signaling. Asrij mutant lymph glands show increased N in sorting endosomes suggesting aberrant trafficking. In vitro assays also show impaired traffic of fluorescent probes in asrij null hemocytes. Taken together our data suggest a role for Asrij in causing increased Notch signaling thereby affecting hemocyte differentiation. Thus, conserved endocytic functions may control blood cell progenitor quiescence and differentiation.
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Affiliation(s)
- Vani Kulkarni
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, India
| | - Rohan J. Khadilkar
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, India
| | - Srivathsa M. S.
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, India
| | - Maneesha S. Inamdar
- Molecular Biology and Genetics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, India
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