51
|
Karthikeyan B, Harini L, Krishnakumar V, Kannan VR, Sundar K, Kathiresan T. Insights on the involvement of (-)-epigallocatechin gallate in ER stress-mediated apoptosis in age-related macular degeneration. Apoptosis 2018; 22:72-85. [PMID: 27778132 DOI: 10.1007/s10495-016-1318-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Endoplasmic reticulum (ER) stress-mediated apoptosis is a well-known factor in the pathogenesis of age-related macular degeneration (AMD). ER stress leads to accumulation of misfolded proteins, which in turn activates unfolded protein response (UPR) of the cell for its survival. The prolonged UPR of ER stress promotes cell death; however, the transition between adaptation and ER stress-induced apoptosis has not been clearly understood. Hence, the present study investigates the regulatory effect of (-)-epigallocatechin gallate (EGCG) on ER stress-induced by hydrogen peroxide (H2O2) and disturbance of calcium homeostasis by thapsigargin (TG) in mouse retinal pigment epithelial (MRPE) cells. The oxidant molecules influenced MRPE cells showed an increased level of intracellular calcium [Ca2+]i in ER and transferred to mitochondria through ER-mitochondrial tether site then increased ROS production. EGCG restores [Ca2+]i homeostasis by decreasing ROS production through inhibition of prohibitin1 which regulate ER-mitochondrial tether site and inhibit apoptosis. Effect of EGCG on ER stress-mediated apoptosis was elucidated by exploring the UPR signalling pathways. EGCG downregulated GRP78, CHOP, PERK, ERO1α, IRE1α, cleaved PARP, cleaved caspase 3, caspase 12 and upregulated expression of calnexinin MRPE cells. In addition to this, inhibition of apoptosis by EGCG was also confirmed with expression of proteins Akt, PTEN and GSK3β. MRPE cells with EGCG upregulates phosphorylation of Akt at ser473 and phospho ser380 of PTEN, but phosphorylation at ser9 of GSK3β was inhibited. Further, constitutively active (myristoylated) CA-Akt transfected in MRPE cells had an increased Akt activity in EGCG influenced cells. These findings strongly suggest that antioxidant molecules inhibit cell death through the proper balancing of [Ca2+]i and ROS production in order to maintain UPR of ER in MRPE cells. Thus, modulation of UPR signalling may provide a potential target for the therapeutic approaches of AMD.
Collapse
Affiliation(s)
- Bose Karthikeyan
- Department of Biotechnology, Kalasalingam University, Anand Nagar, Krishnankoil, Tamil Nadu, 626 126, India.,Department of Ophthalmic Research, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, 44195, USA
| | - Lakshminarasimhan Harini
- Department of Biotechnology, Kalasalingam University, Anand Nagar, Krishnankoil, Tamil Nadu, 626 126, India
| | | | - Velu Rajesh Kannan
- Department of Microbiology, Bharathidasan University, Tiruchirappalli, Tamil Nadu, 620 024, India
| | - Krishnan Sundar
- Department of Biotechnology, Kalasalingam University, Anand Nagar, Krishnankoil, Tamil Nadu, 626 126, India.,International Research Centre, Kalasalingam University, Krishnankoil, Tamil Nadu, 626 126, India
| | - Thandavarayan Kathiresan
- Department of Biotechnology, Kalasalingam University, Anand Nagar, Krishnankoil, Tamil Nadu, 626 126, India. .,International Research Centre, Kalasalingam University, Krishnankoil, Tamil Nadu, 626 126, India.
| |
Collapse
|
52
|
Smith R, Wang J, Seymour C, Fernandez-Palomo C, Fazzari J, Schültke E, Bräuer-Krisch E, Laissue J, Schroll C, Mothersill C. Homogenous and Microbeam X-Ray Radiation Induces Proteomic Changes in the Brains of Irradiated Rats and in the Brains of Nonirradiated Cage Mate Rats. Dose Response 2018; 16:1559325817750068. [PMID: 29383012 PMCID: PMC5784471 DOI: 10.1177/1559325817750068] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 07/07/2017] [Accepted: 07/11/2017] [Indexed: 01/08/2023] Open
Abstract
To evaluate microbeam radiation therapy (MRT), for brain tumor treatment, the bystander effect in nonirradiated companion animals was investigated. Adult rats were irradiated with 35 or 350 Gy at the European Synchrotron Research Facility using homogenous irradiation (HR) or MRT to the right brain hemisphere. The irradiated rats were housed with nonirradiated rats. After 48 hours, all rats were euthanized and the frontal lobe proteome was analyzed using 2-dimensional electrophoresis and mass spectrometry. Proteome changes were determined by analysis of variance (P < .05). Homogenous irradiation increased serum albumin, heat shock protein 71 (HSP-71), triosephosphate isomerase (TPI), fructose bisphosphate aldolase (FBA), and prohibitin and decreased dihydrolipoyl dehydrogenase (DLD) and pyruvate kinase. Microbeam radiation therapy increased HSP-71, FBA, and prohibitin, and decreased aconitase, dihydropyrimidinase, TPI, tubulin DLD, and pyruvate kinase. Cage mates with HR irradiated rats showed increased HSP-71 and FBA and decreased pyruvate kinase, DLD, and aconitase. Cage mates with MRT irradiated rats showed increased HSP-71, prohibitin, and FBA and decreased aconitase and DLD. Homogenous irradiation proteome changes indicated tumorigenesis, while MRT proteome changes indicated an oxidative stress response. The bystander effect of proteome changes appeared antitumorigenic and inducing radioresistance. This investigation also supports the need for research into prohibitin interaction with HSP-70/71 chaperones and cancer therapy.
Collapse
Affiliation(s)
- Richard Smith
- Department of Medical Physics and Applied Radiation Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Jiaxi Wang
- Mass Spectrometry Facility, Department of Chemistry, Queen's University, Kingston, Ontario, Canada
| | - Colin Seymour
- Department of Medical Physics and Applied Radiation Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Cristian Fernandez-Palomo
- Department of Medical Physics and Applied Radiation Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Jennifer Fazzari
- Department of Medical Physics and Applied Radiation Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Elisabeth Schültke
- Department of Radio-oncology, Rostock University Medical Centre, Rostock, Germany
| | | | - Jean Laissue
- Institute of Pathology, University of Bern, Bern, Switzerland
| | - Christian Schroll
- Stereotactic Neurosurgery and Laboratory for Molecular Neurosurgery, Freiburg University Medical Centre, Freiburg, Germany
| | - Carmel Mothersill
- Department of Medical Physics and Applied Radiation Sciences, McMaster University, Hamilton, Ontario, Canada
| |
Collapse
|
53
|
Wang Y, Zhang J, Li B, He QY. Proteomic analysis of mitochondria: biological and clinical progresses in cancer. Expert Rev Proteomics 2017; 14:891-903. [DOI: 10.1080/14789450.2017.1374180] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Yang Wang
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Jing Zhang
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Bin Li
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Qing-Yu He
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China
| |
Collapse
|
54
|
Ross JA, Robles-Escajeda E, Oaxaca DM, Padilla DL, Kirken RA. The prohibitin protein complex promotes mitochondrial stabilization and cell survival in hematologic malignancies. Oncotarget 2017; 8:65445-65456. [PMID: 29029444 PMCID: PMC5630344 DOI: 10.18632/oncotarget.18920] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 06/16/2017] [Indexed: 12/18/2022] Open
Abstract
Prohibitins (PHB1 and PHB2) have been proposed to play important roles in cancer development and progression, however their oncogenic mechanism of action has not been fully elucidated. Previously, we showed that the PHB1 and PHB2 protein complex is required for mitochondrial homeostasis and survival of normal human lymphocytes. In this study, novel evidence is provided that indicates mitochondrial prohibitins are overexpressed in hematologic tumor cells and promote cell survival under conditions of oxidative stress. Immunofluorescent confocal microscopy revealed both proteins to be primarily confined to mitochondria in primary patient lymphoid and myeloid tumor cells and tumor cell lines, including Kit225 cells. Subsequently, siRNA-mediated knockdown of PHB1 and PHB2 in Kit225 cells significantly enhanced sensitivity to H2O2-induced cell death, suggesting a protective or anti-apoptotic function in hematologic malignancies. Indeed, PHB1 and PHB2 protein levels were significantly higher in tumor cells isolated from leukemia and lymphoma patients compared to PBMCs from healthy donors. These findings suggest that PHB1 and PHB2 are upregulated during tumorigenesis to maintain mitochondrial integrity and therefore may serve as novel biomarkers and molecular targets for therapeutic intervention in certain types of hematologic malignancies.
Collapse
Affiliation(s)
- Jeremy A Ross
- Department of Biological Sciences and Border Biomedical Research Center, The University of Texas at El Paso, El Paso, TX 79968, USA
| | - Elisa Robles-Escajeda
- Department of Biological Sciences and Border Biomedical Research Center, The University of Texas at El Paso, El Paso, TX 79968, USA
| | - Derrick M Oaxaca
- Department of Biological Sciences and Border Biomedical Research Center, The University of Texas at El Paso, El Paso, TX 79968, USA
| | - Diana L Padilla
- Department of Biological Sciences and Border Biomedical Research Center, The University of Texas at El Paso, El Paso, TX 79968, USA
| | - Robert A Kirken
- Department of Biological Sciences and Border Biomedical Research Center, The University of Texas at El Paso, El Paso, TX 79968, USA
| |
Collapse
|
55
|
Cosialls AM, Pomares H, Iglesias-Serret D, Saura-Esteller J, Núñez-Vázquez S, González-Gironès DM, de la Banda E, Preciado S, Albericio F, Lavilla R, Pons G, González-Barca EM, Gil J. The prohibitin-binding compound fluorizoline induces apoptosis in chronic lymphocytic leukemia cells through the upregulation of NOXA and synergizes with ibrutinib, 5-aminoimidazole-4-carboxamide riboside or venetoclax. Haematologica 2017; 102:1587-1593. [PMID: 28619845 PMCID: PMC5685241 DOI: 10.3324/haematol.2016.162958] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 06/08/2017] [Indexed: 12/27/2022] Open
Abstract
Fluorizoline is a new synthetic molecule that induces apoptosis by selectively targeting prohibitins. In the study herein, the pro-apoptotic effect of fluorizoline was assessed in 34 primary samples from patients with chronic lymphocytic leukemia. Fluorizoline induced apoptosis in chronic lymphocytic leukemia cells at concentrations in the low micromolar range. All primary samples were sensitive to fluorizoline irrespective of patients’ clinical or genetic features, whereas normal T lymphocytes were less sensitive. Fluorizoline increased the protein levels of the pro-apoptotic B-cell lymphoma 2 family member NOXA in chronic lymphocytic leukemia cells. Furthermore, fluorizoline synergized with ibrutinib, 5-aminoimidazole-4-carboxamide riboside or venetoclax to induce apoptosis. These results suggest that targeting prohibitins could be a new therapeutic strategy for chronic lymphocytic leukemia.
Collapse
Affiliation(s)
- Ana M Cosialls
- Departament de Ciències Fisiològiques, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona-IDIBELL (Institut d'Investigació Biomèdica de Bellvitge), L'Hospitalet de Llobregat, Barcelona, Spain
| | - Helena Pomares
- Departament de Ciències Fisiològiques, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona-IDIBELL (Institut d'Investigació Biomèdica de Bellvitge), L'Hospitalet de Llobregat, Barcelona, Spain.,Servei d'Hematologia Clínica, Institut Català d'Oncologia (ICO)-IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Daniel Iglesias-Serret
- Departament de Ciències Fisiològiques, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona-IDIBELL (Institut d'Investigació Biomèdica de Bellvitge), L'Hospitalet de Llobregat, Barcelona, Spain
| | - José Saura-Esteller
- Departament de Ciències Fisiològiques, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona-IDIBELL (Institut d'Investigació Biomèdica de Bellvitge), L'Hospitalet de Llobregat, Barcelona, Spain
| | - Sonia Núñez-Vázquez
- Departament de Ciències Fisiològiques, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona-IDIBELL (Institut d'Investigació Biomèdica de Bellvitge), L'Hospitalet de Llobregat, Barcelona, Spain
| | - Diana M González-Gironès
- Departament de Ciències Fisiològiques, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona-IDIBELL (Institut d'Investigació Biomèdica de Bellvitge), L'Hospitalet de Llobregat, Barcelona, Spain
| | - Esmeralda de la Banda
- Unitat de Citohematologia, Servei d'Anatomia Patològica, Hospital Universitari de Bellvitge (HUB)-IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Sara Preciado
- Department of Organic Chemistry, University of Barcelona, Spain
| | - Fernando Albericio
- Department of Organic Chemistry, University of Barcelona, Spain.,CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona Science Park, Spain.,School of Chemistry & Physics, University of KwaZulu-Natal, Durban, South Africa
| | - Rodolfo Lavilla
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona Science Park, Spain.,Laboratory of Organic Chemistry, Faculty of Pharmacy, University of Barcelona, Spain
| | - Gabriel Pons
- Departament de Ciències Fisiològiques, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona-IDIBELL (Institut d'Investigació Biomèdica de Bellvitge), L'Hospitalet de Llobregat, Barcelona, Spain
| | - Eva M González-Barca
- Servei d'Hematologia Clínica, Institut Català d'Oncologia (ICO)-IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Joan Gil
- Departament de Ciències Fisiològiques, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona-IDIBELL (Institut d'Investigació Biomèdica de Bellvitge), L'Hospitalet de Llobregat, Barcelona, Spain
| |
Collapse
|
56
|
Nam HS, Izumchenko E, Dasgupta S, Hoque MO. Mitochondria in chronic obstructive pulmonary disease and lung cancer: where are we now? Biomark Med 2017; 11:475-489. [PMID: 28598223 DOI: 10.2217/bmm-2016-0373] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Recent advances in mitochondrial biogenesis have provided the emerging recognition that mitochondria do much more than 'simply providing energy for cellular function'. Currently, a constantly improving understanding of the mitochondrial structure and function has been providing valuable insights into the contribution of defects in mitochondrial metabolism to various human diseases, including chronic obstructive pulmonary disease and lung cancer. The growing interest in mitochondria research led to development of new biomedical fields in the two main smoking-related lung diseases. However, there is considerable paucity in our understanding of mechanisms by which mitochondrial dynamics regulate lung diseases. In this review, we will discuss our current knowledge on the role of mitochondrial dysfunction in the pathogenesis of chronic obstructive pulmonary disease and non-small-cell lung cancer.
Collapse
Affiliation(s)
- Hae-Seong Nam
- Department of Otolaryngology & Head & Neck Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.,Division of Pulmonology, Department of Internal Medicine, Inha University Hospital, Inha University School of Medicine, Incheon 22332, South Korea
| | - Evgeny Izumchenko
- Department of Otolaryngology & Head & Neck Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Santanu Dasgupta
- Department of Cellular & Molecular Biology, The University of Texas Health Science Center at Tyler, Tyler, TX 75708, USA
| | - Mohammad O Hoque
- Department of Otolaryngology & Head & Neck Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.,Department of Urology, The Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.,Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| |
Collapse
|
57
|
Fan W, Yang H, Liu T, Wang J, Li TWH, Mavila N, Tang Y, Yang J, Peng H, Tu J, Annamalai A, Noureddin M, Krishnan A, Gores GJ, Martínez-Chantar ML, Mato JM, Lu SC. Prohibitin 1 suppresses liver cancer tumorigenesis in mice and human hepatocellular and cholangiocarcinoma cells. Hepatology 2017; 65:1249-1266. [PMID: 27981602 PMCID: PMC5360526 DOI: 10.1002/hep.28964] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 11/04/2016] [Accepted: 11/30/2016] [Indexed: 12/11/2022]
Abstract
UNLABELLED Prohibitin 1 (PHB1) is best known as a mitochondrial chaperone, and its role in cancer is conflicting. Mice lacking methionine adenosyltransferase α1 (MATα1) have lower PHB1 expression, and we reported that c-MYC interacts directly with both proteins. Furthermore, c-MYC and MATα1 exert opposing effects on liver cancer growth, prompting us to examine the interplay between PHB1, MATα1, and c-MYC and PHB1's role in liver tumorigenesis. We found that PHB1 is highly expressed in normal hepatocytes and bile duct epithelial cells and down-regulated in most human hepatocellular carcinoma (HCC) and cholangiocarcinoma (CCA). In HCC and CCA cells, PHB1 expression correlates inversely with growth. PHB1 and MAT1A positively regulate each other's expression, whereas PHB1 negatively regulates the expression of c-MYC, MAFG, and c-MAF. Both PHB1 and MATα1 heterodimerize with MAX, bind to the E-box element, and repress E-box promoter activity. PHB1 promoter contains a repressive E-box element and is occupied mainly by MAX, MNT, and MATα1 in nonmalignant cholangiocytes and noncancerous tissues that switched to c-MYC, c-MAF, and MAFG in cancer cells and human HCC/CCA. All 8-month-old liver-specific Phb1 knockout mice developed HCC, and one developed CCA. Five-month-old Phb1 heterozygotes, but not Phb1 flox mice, developed aberrant bile duct proliferation; and one developed CCA 3.5 months after left and median bile duct ligation. Phb1 heterozygotes had a more profound fall in the expression of glutathione synthetic enzymes and higher hepatic oxidative stress following left and median bile duct ligation. CONCLUSION We have identified that PHB1, down-regulated in most human HCC and CCA, heterodimerizes with MAX to repress the E-box and positively regulates MAT1A while suppressing c-MYC, MAFG, and c-MAF expression; in mice, reduced PHB1 expression predisposes to the development of cholestasis-induced CCA. (Hepatology 2017;65:1249-1266).
Collapse
Affiliation(s)
- Wei Fan
- Division of Digestive and Liver Diseases, Cedars-Sinai Medical Center, Los Angeles, CA
- Department of Geriatrics, Guangzhou First People's Hospital, Guangzhou, China
- State Key Laboratory of Respiratory Diseases, First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Heping Yang
- Division of Digestive and Liver Diseases, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Ting Liu
- Department of Gastroenterology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jiaohong Wang
- Division of Digestive and Liver Diseases, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Tony W H Li
- Division of Digestive and Liver Diseases, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Nirmala Mavila
- Division of Digestive and Liver Diseases, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Yuanyuan Tang
- Division of Digestive and Liver Diseases, Cedars-Sinai Medical Center, Los Angeles, CA
- Department of Oncology, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - JinWon Yang
- Division of Digestive and Liver Diseases, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Hui Peng
- Division of Digestive and Liver Diseases, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Jian Tu
- Division of Digestive and Liver Diseases, Cedars-Sinai Medical Center, Los Angeles, CA
- Institute of Pharmacy & Pharmacology, University of South China, Hengyang, China
| | - Alagappan Annamalai
- Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Mazen Noureddin
- Division of Digestive and Liver Diseases, Cedars-Sinai Medical Center, Los Angeles, CA
- Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Anuradha Krishnan
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
| | - Gregory J Gores
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
| | - Maria L Martínez-Chantar
- CIC bioGUNE, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Technology, Park of Bizkaia, Bizkaia, Spain
| | - José M Mato
- CIC bioGUNE, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Technology, Park of Bizkaia, Bizkaia, Spain
| | - Shelly C Lu
- Division of Digestive and Liver Diseases, Cedars-Sinai Medical Center, Los Angeles, CA
| |
Collapse
|
58
|
Xu X, Wu J, Liu Y, Saw PE, Tao W, Yu M, Zope H, Si M, Victorious A, Rasmussen J, Ayyash D, Farokhzad OC, Shi J. Multifunctional Envelope-Type siRNA Delivery Nanoparticle Platform for Prostate Cancer Therapy. ACS NANO 2017; 11:2618-2627. [PMID: 28240870 PMCID: PMC5626580 DOI: 10.1021/acsnano.6b07195] [Citation(s) in RCA: 154] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
With the capability of specific silencing of target gene expression, RNA interference (RNAi) technology is emerging as a promising therapeutic modality for the treatment of cancer and other diseases. One key challenge for the clinical applications of RNAi is the safe and effective delivery of RNAi agents such as small interfering RNA (siRNA) to a particular nonliver diseased tissue (e.g., tumor) and cell type with sufficient cytosolic transport. In this work, we proposed a multifunctional envelope-type nanoparticle (NP) platform for prostate cancer (PCa)-specific in vivo siRNA delivery. A library of oligoarginine-functionalized and sharp pH-responsive polymers was synthesized and used for self-assembly with siRNA into NPs with the features of long blood circulation and pH-triggered oligoarginine-mediated endosomal membrane penetration. By further modification with ACUPA, a small molecular ligand specifically recognizing prostate-specific membrane antigen (PSMA) receptor, this envelope-type nanoplatform with multifunctional properties can efficiently target PSMA-expressing PCa cells and silence target gene expression. Systemic delivery of the siRNA NPs can efficiently silence the expression of prohibitin 1 (PHB1), which is upregulated in PCa and other cancers, and significantly inhibit PCa tumor growth. These results suggest that this multifunctional envelope-type nanoplatform could become an effective tool for PCa-specific therapy.
Collapse
Affiliation(s)
- Xiaoding Xu
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Jun Wu
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Yanlan Liu
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Phei Er Saw
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Wei Tao
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Mikyung Yu
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Harshal Zope
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Michelle Si
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Amanda Victorious
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Jonathan Rasmussen
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Dana Ayyash
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Omid C. Farokhzad
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
- King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Jinjun Shi
- Center for Nanomedicine and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
| |
Collapse
|
59
|
Wei Y, Chiang WC, Sumpter R, Mishra P, Levine B. Prohibitin 2 Is an Inner Mitochondrial Membrane Mitophagy Receptor. Cell 2016; 168:224-238.e10. [PMID: 28017329 DOI: 10.1016/j.cell.2016.11.042] [Citation(s) in RCA: 537] [Impact Index Per Article: 67.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 09/15/2016] [Accepted: 11/23/2016] [Indexed: 01/03/2023]
Abstract
The removal of unwanted or damaged mitochondria by autophagy, a process called mitophagy, is essential for key events in development, cellular homeostasis, tumor suppression, and prevention of neurodegeneration and aging. However, the precise mechanisms of mitophagy remain uncertain. Here, we identify the inner mitochondrial membrane protein, prohibitin 2 (PHB2), as a crucial mitophagy receptor involved in targeting mitochondria for autophagic degradation. PHB2 binds the autophagosomal membrane-associated protein LC3 through an LC3-interaction region (LIR) domain upon mitochondrial depolarization and proteasome-dependent outer membrane rupture. PHB2 is required for Parkin-induced mitophagy in mammalian cells and for the clearance of paternal mitochondria after embryonic fertilization in C. elegans. Our findings pinpoint a conserved mechanism of eukaryotic mitophagy and demonstrate a function of prohibitin 2 that may underlie its roles in physiology, aging, and disease.
Collapse
Affiliation(s)
- Yongjie Wei
- Center for Autophagy Research, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75230, USA; Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75230, USA
| | - Wei-Chung Chiang
- Center for Autophagy Research, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75230, USA
| | - Rhea Sumpter
- Center for Autophagy Research, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75230, USA
| | - Prashant Mishra
- Children's Medical Center Research Institute, University of Texas Southwestern Medical Center, Dallas, TX 75230, USA
| | - Beth Levine
- Center for Autophagy Research, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75230, USA; Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75230, USA; Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX 75230, USA.
| |
Collapse
|
60
|
Ramani K, Mavila N, Ko KS, Mato JM, Lu SC. Prohibitin 1 Regulates the H19-Igf2 Axis and Proliferation in Hepatocytes. J Biol Chem 2016; 291:24148-24159. [PMID: 27687727 DOI: 10.1074/jbc.m116.744045] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 09/26/2016] [Indexed: 12/15/2022] Open
Abstract
Prohibitin 1 (PHB1) is a mitochondrial chaperone that regulates cell growth. Phb1 knock-out mice exhibit liver injury and hepatocellular carcinoma (HCC). Phb1 knock-out livers show induction of tumor growth-associated genes, H19 and insulin-like growth factor 2 (Igf2). These genes are controlled by the imprinting control region (ICR) containing CCCTC-binding transcription factor (CTCF)-binding sites. Because Phb1 knock-out mice exhibited induction of H19 and Igf2, we hypothesized that PHB1-mediated regulation of the H19-Igf2 axis might control cell proliferation in normal hepatocytes. H19 and Igf2 were induced (8-20-fold) in 3-week-old Phb1 knock-out livers, in Phb1 siRNA-treated AML12 hepatocytes (2-fold), and HCC cell lines when compared with control. Phb1 knockdown lowered CTCF protein in AML12 by ∼30% when compared with control. CTCF overexpression lowered basal H19 and Igf2 expression by 30% and suppressed Phb1 knockdown-mediated induction of these genes. CTCF and PHB1 co-immunoprecipitated and co-localized on the ICR element, and Phb1 knockdown lowered CTCF ICR binding activity. The results suggest that PHB1 and CTCF cooperation may control the H19-Igf2 axis. Human HCC tissues with high levels of H19 and IGF2 exhibited a 40-50% reduction in PHB1 and CTCF expression and their ICR binding activity. Silencing Phb1 or overexpressing H19 in the mouse HCC cell line, SAMe-D, induced cell growth. Blocking H19 induction prevented Phb1 knockdown-mediated growth, whereas H19 overexpression had the reverse effect. Interestingly H19 silencing induced PHB1 expression. Taken together, our results demonstrate that the H19-Igf2 axis is negatively regulated by CTCF-PHB1 cooperation and that H19 is involved in modulating the growth-suppressive effect of PHB1 in the liver.
Collapse
Affiliation(s)
- Komal Ramani
- From the Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, California 90048
| | - Nirmala Mavila
- From the Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, California 90048
| | - Kwang Suk Ko
- the Department of Nutritional Science and Food Management, the College of Health Science, Ewha Womans University, Seoul 03760, Korea, and
| | - José M Mato
- the CIC bioGUNE, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Technology Park of Bizkaia, 48160 Derio, Bizkaia, Spain
| | - Shelly C Lu
- From the Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, Los Angeles, California 90048,
| |
Collapse
|
61
|
Moncunill-Massaguer C, Saura-Esteller J, Pérez-Perarnau A, Palmeri CM, Núñez-Vázquez S, Cosialls AM, González-Gironès DM, Pomares H, Korwitz A, Preciado S, Albericio F, Lavilla R, Pons G, Langer T, Iglesias-Serret D, Gil J. A novel prohibitin-binding compound induces the mitochondrial apoptotic pathway through NOXA and BIM upregulation. Oncotarget 2016; 6:41750-65. [PMID: 26497683 PMCID: PMC4747186 DOI: 10.18632/oncotarget.6154] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 09/30/2015] [Indexed: 01/08/2023] Open
Abstract
We previously described diaryl trifluorothiazoline compound 1a (hereafter referred to as fluorizoline) as a first-in-class small molecule that induces p53-independent apoptosis in a wide range of tumor cell lines. Fluorizoline directly binds to prohibitin 1 and 2 (PHBs), two proteins involved in the regulation of several cellular processes, including apoptosis. Here we demonstrate that fluorizoline-induced apoptosis is mediated by PHBs, as cells depleted of these proteins are highly resistant to fluorizoline treatment. In addition, BAX and BAK are necessary for fluorizoline-induced cytotoxic effects, thereby proving that apoptosis occurs through the intrinsic pathway. Expression analysis revealed that fluorizoline induced the upregulation of Noxa and Bim mRNA levels, which was not observed in PHB-depleted MEFs. Finally, Noxa−/−/Bim−/− MEFs and NOXA-downregulated HeLa cells were resistant to fluorizoline-induced apoptosis. All together, these findings show that fluorizoline requires PHBs to execute the mitochondrial apoptotic pathway.
Collapse
Affiliation(s)
- Cristina Moncunill-Massaguer
- Departament de Ciències Fisiològiques II, Universitat de Barcelona-Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Catalunya, Spain
| | - José Saura-Esteller
- Departament de Ciències Fisiològiques II, Universitat de Barcelona-Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Catalunya, Spain
| | - Alba Pérez-Perarnau
- Departament de Ciències Fisiològiques II, Universitat de Barcelona-Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Catalunya, Spain
| | - Claudia Mariela Palmeri
- Departament de Ciències Fisiològiques II, Universitat de Barcelona-Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Catalunya, Spain
| | - Sonia Núñez-Vázquez
- Departament de Ciències Fisiològiques II, Universitat de Barcelona-Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Catalunya, Spain
| | - Ana M Cosialls
- Departament de Ciències Fisiològiques II, Universitat de Barcelona-Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Catalunya, Spain
| | - Diana M González-Gironès
- Departament de Ciències Fisiològiques II, Universitat de Barcelona-Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Catalunya, Spain
| | - Helena Pomares
- Departament de Ciències Fisiològiques II, Universitat de Barcelona-Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Catalunya, Spain
| | - Anne Korwitz
- Institute for Genetics and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Sara Preciado
- Barcelona Science Park and CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona, Spain
| | - Fernando Albericio
- Barcelona Science Park and CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona, Spain.,Institute for Research in Biomedicine Barcelona, Barcelona, Spain.,Department of Organic Chemistry, University of Barcelona, Barcelona, Spain
| | - Rodolfo Lavilla
- Barcelona Science Park and CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona, Spain.,Laboratory of Organic Chemistry, Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - Gabriel Pons
- Departament de Ciències Fisiològiques II, Universitat de Barcelona-Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Catalunya, Spain
| | - Thomas Langer
- Institute for Genetics and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Daniel Iglesias-Serret
- Departament de Ciències Fisiològiques II, Universitat de Barcelona-Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Catalunya, Spain
| | - Joan Gil
- Departament de Ciències Fisiològiques II, Universitat de Barcelona-Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Catalunya, Spain
| |
Collapse
|
62
|
Prohibitin deficiency causes opposing lipid metabolism between 3T3-L1 adipocytes and Clone 9 hepatocytes. BIOTECHNOL BIOPROC E 2016. [DOI: 10.1007/s12257-016-0249-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
63
|
Abstract
Human eukaryotic prohibitin (prohibitin-1 and prohibitin-2) is a membrane protein with different cellular localizations. It is involved in multiple cellular functions, including energy metabolism, proliferation, apoptosis, and senescence. The subcellular localization of prohibitin may determine its functions. Membrane prohibitin regulate the cellular signaling of membrane transport, nuclear prohibitin control transcription activation and the cell cycle, and mitochondrial prohibitin complex stabilize the mitochondrial genome and modulate mitochondrial dynamics, mitochondrial morphology, mitochondrial biogenesis, and the mitochondrial intrinsic apoptotic pathway. Moreover, prohibitin can translocates into the nucleus or the mitochondria under apoptotic signals and the subcellular shuttling of prohibitin is necessary for apoptosis process. Apoptosis is the process of programmed cell death that is important for the maintenance of normal physiological functions. Consequently, any alteration in the content, post-transcriptional modification (i.e. phosphorylation) or the nuclear or mitochondrial translocation of prohibitin may influence cell fate. Understanding the mechanisms of the expression and regulation of prohibitin may be useful for future research. This review provides an overview of the multifaceted and essential roles played by prohibitin in the regulation of cell survival and apoptosis.
Collapse
Affiliation(s)
- Ya-Ting Peng
- Department of Respiratory Medicine, Respiratory Disease Research Institute, Second XiangYa Hospital of Central South University, Changsha, 410011, People's Republic of China
| | | | | | | |
Collapse
|
64
|
Zhou Y, Liao Q, Li X, Wang H, Wei F, Chen J, Yang J, Zeng Z, Guo X, Chen P, Zhang W, Tang K, Li X, Xiong W, Li G. HYOU1, Regulated by LPLUNC1, Is Up-Regulated in Nasopharyngeal Carcinoma and Associated with Poor Prognosis. J Cancer 2016; 7:367-76. [PMID: 26918051 PMCID: PMC4749358 DOI: 10.7150/jca.13695] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Accepted: 12/03/2015] [Indexed: 12/29/2022] Open
Abstract
Objective: This study aims to investigate the roles and mechanisms of long palate, lung and nasal epithelium clone 1 (LPLUNC1) in nasopharyngeal carcinoma (NPC). Methods: The two-dimensional fluorescence difference gel electrophoresis (2-D DIGE) and matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF-TOF-MS/MS) was applied to identify differentially expressed proteins after over-expressing LPLUNC1 in NPC cells. The qRT-PCR and Western Blot were used to further validate differentially expression of Hypoxia up-regulated 1 (HYOU1). We also applied immunohistochemistry (IHC) to validate the expression of HYOU1 protein in NPC tissues. Results: Totally 44 differentially expressed proteins were identified, among which 19 proteins were up-regulated and 25 proteins were down-regulated. Function annotation indicated that these proteins were involved in molecular chaperone, cytoskeleton, metabolism and signal transduction. It was shown that the expression of HYOU1 both at mRNA level and protein level was up-regulated significantly in NPC tissues, and HYOU1 protein expression was positively correlated with clinical staging and metastasis of NPC. Kaplan-Meier survival curves showed that high expression of HYOU1 protein in NPC patients had shorter progression-free survival (PFS) and overall survival (OS). COX multivariate regression analysis further indicated that over-expressed HYOU1 was one of the predictors for poor prognosis in NPC patients. Conclusion: Through regulating proteins in different pathways, LPLUNC1 may inhibit the growth of NPC through participating in cell metabolism, proliferation, transcription and signaling transduction. HYOU1 can be regarded as potential molecular biomarker for progression and prognosis of NPC.
Collapse
Affiliation(s)
- Yujuan Zhou
- 1. Key Laboratory of Translational Radiation Oncology, Hunan Province, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, 283 Tongzipo Road, Changsha 410013, Hunan, China
| | - Qianjin Liao
- 1. Key Laboratory of Translational Radiation Oncology, Hunan Province, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, 283 Tongzipo Road, Changsha 410013, Hunan, China;; 2. The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha 410078, Hunan, China
| | - Xiayu Li
- 3. Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, 138 Tongzipo Road, Changsha 410013, Hunan, China
| | - Hui Wang
- 1. Key Laboratory of Translational Radiation Oncology, Hunan Province, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, 283 Tongzipo Road, Changsha 410013, Hunan, China
| | - Fang Wei
- 1. Key Laboratory of Translational Radiation Oncology, Hunan Province, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, 283 Tongzipo Road, Changsha 410013, Hunan, China;; 2. The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha 410078, Hunan, China
| | - Jie Chen
- 1. Key Laboratory of Translational Radiation Oncology, Hunan Province, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, 283 Tongzipo Road, Changsha 410013, Hunan, China
| | - Jing Yang
- 2. The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha 410078, Hunan, China
| | - Zhaoyang Zeng
- 1. Key Laboratory of Translational Radiation Oncology, Hunan Province, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, 283 Tongzipo Road, Changsha 410013, Hunan, China;; 2. The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha 410078, Hunan, China
| | - Xiaofang Guo
- 2. The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha 410078, Hunan, China
| | - Pan Chen
- 1. Key Laboratory of Translational Radiation Oncology, Hunan Province, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, 283 Tongzipo Road, Changsha 410013, Hunan, China;; 2. The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha 410078, Hunan, China
| | - Wenling Zhang
- 2. The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha 410078, Hunan, China
| | - Ke Tang
- 2. The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha 410078, Hunan, China
| | - Xiaoling Li
- 2. The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha 410078, Hunan, China
| | - Wei Xiong
- 1. Key Laboratory of Translational Radiation Oncology, Hunan Province, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, 283 Tongzipo Road, Changsha 410013, Hunan, China;; 2. The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha 410078, Hunan, China
| | - Guiyuan Li
- 1. Key Laboratory of Translational Radiation Oncology, Hunan Province, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, 283 Tongzipo Road, Changsha 410013, Hunan, China;; 2. The Key Laboratory of Carcinogenesis of the Chinese Ministry of Health and The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, 110 Xiangya Road, Changsha 410078, Hunan, China
| |
Collapse
|
65
|
Park CE. Comparison of the Usefulness of Diagnostic Tests for Rheumatoid Arthritis. KOREAN JOURNAL OF CLINICAL LABORATORY SCIENCE 2015. [DOI: 10.15324/kjcls.2015.47.4.168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Chang-Eun Park
- Deptartment Biomedical Laboratory Science, Namseoul University, Cheonan 31020, Korea
| |
Collapse
|
66
|
Zhong X, Song X, Wang N, Hu D, Liu T, Wang T, Gu X, Lai W, Peng X, Yang G. Molecular identification and characterization of prohibitin from Echinococcus granulosus. Parasitol Res 2015; 115:897-902. [PMID: 26621283 DOI: 10.1007/s00436-015-4846-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 11/20/2015] [Indexed: 11/28/2022]
Abstract
Prohibitin (PHB) is a widely distributed protein that functions as a molecular chaperone, is involved in the regulation of cell cycle, and maintains mitochondrial structure and functions of the anti-apoptosis, senescence, and proliferation. The aim of this study was to characterize PHB in Echinococcus granulosus (EgPHB), a harmful cestode parasite of humans, many livestock species, and wild animals. We found that EgPHB is a conserved SPFH (stomatin, prohibitin, flotillin, and HflK/C) domain-containing protein, consisting of 289 amino acids, which shares 42.66-99.31% identity with PHBs from other parasites and mammals. EgPHB was located mainly in the tegument issue of protoscoleces, in the inner body of adult worms, and was expressed widely in the germinal layer. This is the first report on prohibitin from E. granulosus, and EgPHB is considered to be a valuable protein to study more in the future.
Collapse
Affiliation(s)
- Xiuqin Zhong
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, 211#, Chengdu, 611130, Sichuan Province, China
| | - Xingju Song
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, 211#, Chengdu, 611130, Sichuan Province, China
| | - Ning Wang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, 211#, Chengdu, 611130, Sichuan Province, China
| | - Dandan Hu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, 211#, Chengdu, 611130, Sichuan Province, China
| | - Tinayu Liu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, 211#, Chengdu, 611130, Sichuan Province, China
| | - Tao Wang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, 211#, Chengdu, 611130, Sichuan Province, China
| | - Xiaobin Gu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, 211#, Chengdu, 611130, Sichuan Province, China
| | - Weimin Lai
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, 211#, Chengdu, 611130, Sichuan Province, China
| | - Xuerong Peng
- Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Ya'an, China
| | - Guangyou Yang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Huimin Road, 211#, Chengdu, 611130, Sichuan Province, China.
| |
Collapse
|
67
|
Qureshi R, Yildirim O, Gasser A, Basmadjian C, Zhao Q, Wilmet JP, Désaubry L, Nebigil CG. FL3, a Synthetic Flavagline and Ligand of Prohibitins, Protects Cardiomyocytes via STAT3 from Doxorubicin Toxicity. PLoS One 2015; 10:e0141826. [PMID: 26536361 PMCID: PMC4633129 DOI: 10.1371/journal.pone.0141826] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 10/13/2015] [Indexed: 11/18/2022] Open
Abstract
Aims The clinical use of doxorubicin for the treatment of cancer is limited by its cardiotoxicity. Flavaglines are natural products that have both potent anticancer and cardioprotective properties. A synthetic analog of flavaglines, FL3, efficiently protects mice from the cardiotoxicity of doxorubicin. The mechanism underlying this cardioprotective effect has yet to be elucidated. Methods and Results Here, we show that FL3 binds to the scaffold proteins prohibitins (PHBs) and thus promotes their translocation to mitochondria in the H9c2 cardiomyocytes. FL3 induces heterodimerization of PHB1 with STAT3, thereby ensuring cardioprotection from doxorubicin toxicity. This interaction is associated with phosphorylation of STAT3. A JAK2 inhibitor, WP1066, suppresses both the phosphorylation of STAT3 and the protective effect of FL3 in cardiomyocytes. The involvement of PHBs in the FL3-mediated cardioprotection was confirmed by means of small interfering RNAs (siRNAs) targeting PHB1 and PHB2. The siRNA knockdown of PHBs inhibits both phosphorylation of STAT3 and the cardioprotective effect of FL3. Conclusion Activation of mitochondrial STAT3/PHB1 complex by PHB ligands may be a new strategy against doxorubicin-induced cardiotoxicity and possibly other cardiac problems.
Collapse
Affiliation(s)
- Rehana Qureshi
- GPCRs in cardiobiology and Metabolism team, UMR 7242, CNRS–University of Strasbourg, LabEx Medalis, Strasbourg School of Biotechnology, Illkirch, France
| | - Onur Yildirim
- GPCRs in cardiobiology and Metabolism team, UMR 7242, CNRS–University of Strasbourg, LabEx Medalis, Strasbourg School of Biotechnology, Illkirch, France
| | - Adeline Gasser
- GPCRs in cardiobiology and Metabolism team, UMR 7242, CNRS–University of Strasbourg, LabEx Medalis, Strasbourg School of Biotechnology, Illkirch, France
| | - Christine Basmadjian
- Laboratory of Therapeutic Innovation (UMR 7200), Faculty of Pharmacy, University of Strasbourg–CNRS, Illkirch, France
| | - Qian Zhao
- Laboratory of Therapeutic Innovation (UMR 7200), Faculty of Pharmacy, University of Strasbourg–CNRS, Illkirch, France
| | - Jean-Philippe Wilmet
- GPCRs in cardiobiology and Metabolism team, UMR 7242, CNRS–University of Strasbourg, LabEx Medalis, Strasbourg School of Biotechnology, Illkirch, France
| | - Laurent Désaubry
- Laboratory of Therapeutic Innovation (UMR 7200), Faculty of Pharmacy, University of Strasbourg–CNRS, Illkirch, France
- Sino-French Joint Lab of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
- * E-mail: (LD); (CGN)
| | - Canan G. Nebigil
- GPCRs in cardiobiology and Metabolism team, UMR 7242, CNRS–University of Strasbourg, LabEx Medalis, Strasbourg School of Biotechnology, Illkirch, France
- * E-mail: (LD); (CGN)
| |
Collapse
|
68
|
HE PENGCHENG, LIU YANFENG, QI JUN, ZHU HUACHAO, WANG YUAN, ZHAO JING, CHENG XIAOYAN, WANG CHEN, ZHANG MEI. Prohibitin promotes apoptosis of promyelocytic leukemia induced by arsenic sulfide. Int J Oncol 2015; 47:2286-95. [DOI: 10.3892/ijo.2015.3217] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Accepted: 09/22/2015] [Indexed: 11/05/2022] Open
|
69
|
Antiosteoporotic Effects of Huangqi Sanxian Decoction in Cultured Rat Osteoblasts by Proteomic Characterization of the Target and Mechanism. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:514063. [PMID: 26557149 PMCID: PMC4628673 DOI: 10.1155/2015/514063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Revised: 06/05/2015] [Accepted: 06/24/2015] [Indexed: 01/01/2023]
Abstract
Huangqi Sanxian decoction (HQSXD) is routinely used for the treatment of osteoporosis in the Chinese traditional healthcare system. However, the targets and mechanism underlying the effect of HQSXD on osteoporosis have not been documented. In the present study, seropharmacology and proteomic approaches (two-dimensional gel electrophoresis combined with mass spectrometry) were used to investigate the effects and possible target proteins of HQSXD on osteoblast. We found that HQSXD-treated rat serum significantly enhanced osteoblast proliferation, differentiation, and mineralization. In HQSXD-S-treated osteoblasts, there were increases in the expression of N-formyl peptide receptor 2 and heparan sulfate (glucosamine) 3-O-sulfotransferase 3A1 and reduction in the expression of alpha-spectrin, prohibitin, and transcription elongation factor B (SIII), polypeptide 1. The identified proteins are associated with cell proliferation, differentiation, signal transcription, and cell growth. These findings might provide valuable insights into the mechanism of antiosteoporotic effect affected by HQSXD treatment in osteoblasts.
Collapse
|
70
|
Koushyar S, Jiang WG, Dart DA. Unveiling the potential of prohibitin in cancer. Cancer Lett 2015; 369:316-22. [PMID: 26450374 DOI: 10.1016/j.canlet.2015.09.012] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 09/16/2015] [Accepted: 09/19/2015] [Indexed: 12/18/2022]
Abstract
Recently, research has shed new light on the role of Prohibitin (PHB) in cancer pathogenesis across an array of cancer types. Important mechanisms for PHB have been unveiled in several cancers, especially with regard to the androgen independent state of prostate cancer (PC) and oestrogen dependent breast cancer. However, PHB is often overlooked due to its complex but subtle roles within the cell. Having gathered both historical and current research exploring PHB's role in different cancer types including prostate and breast, here we aim to pair this information with its molecular properties in the hope of translating this information into a clinical perspective, thus discussing its possible use in future cancer therapy.
Collapse
Affiliation(s)
- Sarah Koushyar
- Cardiff China Medical Research Collaborative (CCMRC), Cardiff University, School of Medicine, Henry Welcome Building, Heath Park, Cardiff CF14 4XN, UK.
| | - Wen G Jiang
- Cardiff China Medical Research Collaborative (CCMRC), Cardiff University, School of Medicine, Henry Welcome Building, Heath Park, Cardiff CF14 4XN, UK
| | - D Alwyn Dart
- Cardiff China Medical Research Collaborative (CCMRC), Cardiff University, School of Medicine, Henry Welcome Building, Heath Park, Cardiff CF14 4XN, UK
| |
Collapse
|
71
|
Barbier-Torres L, Beraza N, Fernández-Tussy P, Lopitz-Otsoa F, Fernández-Ramos D, Zubiete-Franco I, Varela-Rey M, Delgado TC, Gutiérrez V, Anguita J, Pares A, Banales JM, Villa E, Caballería J, Alvarez L, Lu SC, Mato JM, Martínez-Chantar ML. Histone deacetylase 4 promotes cholestatic liver injury in the absence of prohibitin-1. Hepatology 2015; 62:1237-48. [PMID: 26109312 PMCID: PMC4589448 DOI: 10.1002/hep.27959] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 06/21/2015] [Indexed: 12/16/2022]
Abstract
UNLABELLED Prohibitin-1 (PHB1) is an evolutionarily conserved pleiotropic protein that participates in diverse processes depending on its subcellular localization and interactome. Recent data have indicated a diverse role for PHB1 in the pathogenesis of obesity, cancer, and inflammatory bowel disease, among others. Data presented here suggest that PHB1 is also linked to cholestatic liver disease. Expression of PHB1 is markedly reduced in patients with primary biliary cirrhosis and biliary atresia or with Alagille syndrome, two major pediatric cholestatic conditions. In the experimental model of bile duct ligation, silencing of PHB1 induced liver fibrosis, reduced animal survival, and induced bile duct proliferation. Importantly, the modulatory effect of PHB1 is not dependent on its known mitochondrial function. Also, PHB1 interacts with histone deacetylase 4 (HDAC4) in the presence of bile acids. Hence, PHB1 depletion leads to increased nuclear HDAC4 content and its associated epigenetic changes. Remarkably, HDAC4 silencing and the administration of the HDAC inhibitor parthenolide during obstructive cholestasis in vivo promote genomic reprogramming, leading to regression of the fibrotic phenotype in liver-specific Phb1 knockout mice. CONCLUSION PHB1 is an important mediator of cholestatic liver injury that regulates the activity of HDAC4, which controls specific epigenetic markers; these results identify potential novel strategies to treat liver injury and fibrosis, particularly as a consequence of chronic cholestasis.
Collapse
Affiliation(s)
- Lucía Barbier-Torres
- CIC bioGUNE, Metabolomics Unit, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Technology Park of Bizkaia, 48160 Derio, Bizkaia, Spain
| | - Naiara Beraza
- CIC bioGUNE, Metabolomics Unit, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Technology Park of Bizkaia, 48160 Derio, Bizkaia, Spain
| | - Pablo Fernández-Tussy
- CIC bioGUNE, Metabolomics Unit, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Technology Park of Bizkaia, 48160 Derio, Bizkaia, Spain
| | - Fernando Lopitz-Otsoa
- CIC bioGUNE, Metabolomics Unit, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Technology Park of Bizkaia, 48160 Derio, Bizkaia, Spain
| | - David Fernández-Ramos
- CIC bioGUNE, Metabolomics Unit, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Technology Park of Bizkaia, 48160 Derio, Bizkaia, Spain
| | - Imanol Zubiete-Franco
- CIC bioGUNE, Metabolomics Unit, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Technology Park of Bizkaia, 48160 Derio, Bizkaia, Spain
| | - Marta Varela-Rey
- CIC bioGUNE, Metabolomics Unit, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Technology Park of Bizkaia, 48160 Derio, Bizkaia, Spain
| | - Teresa C Delgado
- CIC bioGUNE, Metabolomics Unit, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Technology Park of Bizkaia, 48160 Derio, Bizkaia, Spain
| | - Virginia Gutiérrez
- CIC bioGUNE, Metabolomics Unit, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Technology Park of Bizkaia, 48160 Derio, Bizkaia, Spain
| | - Juan Anguita
- CIC bioGUNE, Proteomics Unit, Technology Park of Bizkaia, 48160 Derio, Bizkaia, Spain
| | - Albert Pares
- Liver Unit. Hospital Clínic. Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd). IDIBAPS. Barcelona, Spain
| | - Jesús M Banales
- Biodonostia Research Health Institute, Donostia University Hospital (HUD), University of the Basque Country (UPV/EHU), Ikerbasque, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), San Sebastian, Spain
| | - Erica Villa
- Department of Gastroenterology, Azienda Ospedaliero-Universitaria & University of Modena and Reggio Emilia, Modena, Italy
| | - Juan Caballería
- Liver Unit. Hospital Clínic. Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd). IDIBAPS. Barcelona, Spain
| | - Luis Alvarez
- La Paz University Hospital Health Research Institute-IdiPAZ, Madrid, Spain
| | - Shelly C Lu
- Division of Gastroenterology, Cedars-Sinai Medical Center, Los Angeles, California 90048; USC Research Center for Liver Diseases, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033
| | - Jose M Mato
- CIC bioGUNE, Metabolomics Unit, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Technology Park of Bizkaia, 48160 Derio, Bizkaia, Spain
| | - María Luz Martínez-Chantar
- CIC bioGUNE, Metabolomics Unit, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Technology Park of Bizkaia, 48160 Derio, Bizkaia, Spain
- Corresponding Author: Martinez-Chantar ML, CIC bioGUNE, Technology Park of Bizkaia, 48160 Derio, Bizkaia, Spain. Tel: +34-944-061318; Fax: +34-944-061301
| |
Collapse
|
72
|
Poitelon Y, Bogni S, Matafora V, Della-Flora Nunes G, Hurley E, Ghidinelli M, Katzenellenbogen BS, Taveggia C, Silvestri N, Bachi A, Sannino A, Wrabetz L, Feltri ML. Spatial mapping of juxtacrine axo-glial interactions identifies novel molecules in peripheral myelination. Nat Commun 2015; 6:8303. [PMID: 26383514 PMCID: PMC4576721 DOI: 10.1038/ncomms9303] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 08/07/2015] [Indexed: 12/13/2022] Open
Abstract
Cell–cell interactions promote juxtacrine signals in specific subcellular domains, which are difficult to capture in the complexity of the nervous system. For example, contact between axons and Schwann cells triggers signals required for radial sorting and myelination. Failure in this interaction causes dysmyelination and axonal degeneration. Despite its importance, few molecules at the axo-glial surface are known. To identify novel molecules in axo-glial interactions, we modified the ‘pseudopodia' sub-fractionation system and isolated the projections that glia extend when they receive juxtacrine signals from axons. By proteomics we identified the signalling networks present at the glial-leading edge, and novel proteins, including members of the Prohibitin family. Glial-specific deletion of Prohibitin-2 in mice impairs axo-glial interactions and myelination. We thus validate a novel method to model morphogenesis and juxtacrine signalling, provide insights into the molecular organization of the axo-glial contact, and identify a novel class of molecules in myelination. Neuron–glia interactions are critical in the nervous system, where they result in the extension of glial pseudopodia. Poitelon et al. isolate these protrusions using an in vitro assay, and, by characterising their proteomes, identify Prohibitin-2 as a regulator of myelination.
Collapse
Affiliation(s)
- Y Poitelon
- Hunter James Kelly Research Institute, Department Biochemistry, University at Buffalo, Buffalo, New York 14203, USA.,Division of Genetics and Cell Biology, San Raffaele Hospital, Milano 20132, Italy
| | - S Bogni
- Division of Genetics and Cell Biology, San Raffaele Hospital, Milano 20132, Italy
| | - V Matafora
- Division of Genetics and Cell Biology, San Raffaele Hospital, Milano 20132, Italy
| | - G Della-Flora Nunes
- Hunter James Kelly Research Institute, Department Biochemistry, University at Buffalo, Buffalo, New York 14203, USA
| | - E Hurley
- Hunter James Kelly Research Institute, Department Biochemistry, University at Buffalo, Buffalo, New York 14203, USA
| | - M Ghidinelli
- Hunter James Kelly Research Institute, Department Biochemistry, University at Buffalo, Buffalo, New York 14203, USA.,Division of Genetics and Cell Biology, San Raffaele Hospital, Milano 20132, Italy
| | - B S Katzenellenbogen
- Department of Molecular and Integrative Physiology, University of Illinois and College of Medicine, Urbana Illinois 61801, USA
| | - C Taveggia
- Division of Neuroscience, San Raffaele Hospital, Milano 20132, Italy
| | - N Silvestri
- Department of Neurology, School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, New York 14203, USA
| | - A Bachi
- Division of Genetics and Cell Biology, San Raffaele Hospital, Milano 20132, Italy
| | - A Sannino
- Department of Engineering for Innovation, University of Salento, Lecce 73100, Italy
| | - L Wrabetz
- Hunter James Kelly Research Institute, Department Biochemistry, University at Buffalo, Buffalo, New York 14203, USA.,Division of Genetics and Cell Biology, San Raffaele Hospital, Milano 20132, Italy.,Department of Neurology, School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, New York 14203, USA
| | - M L Feltri
- Hunter James Kelly Research Institute, Department Biochemistry, University at Buffalo, Buffalo, New York 14203, USA.,Division of Genetics and Cell Biology, San Raffaele Hospital, Milano 20132, Italy.,Department of Neurology, School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, New York 14203, USA
| |
Collapse
|
73
|
Liu S, Wang W, Brown LE, Qiu C, Lajkiewicz N, Zhao T, Zhou J, Porco JA, Wang TT. A Novel Class of Small Molecule Compounds that Inhibit Hepatitis C Virus Infection by Targeting the Prohibitin-CRaf Pathway. EBioMedicine 2015; 2:1600-6. [PMID: 26870784 PMCID: PMC4740292 DOI: 10.1016/j.ebiom.2015.09.018] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 09/02/2015] [Accepted: 09/11/2015] [Indexed: 01/20/2023] Open
Abstract
Identification of novel drug targets and affordable therapeutic agents remains a high priority in the fight against chronic hepatitis C virus (HCV) infection. Here, we report that the cellular proteins prohibitin 1 (PHB1) and 2 (PHB2) are pan-genotypic HCV entry factors functioning at a post-binding step. While predominantly found in mitochondria, PHBs localize to the plasma membrane of hepatocytes through their transmembrane domains and interact with both EGFR and CRaf. Targeting PHB by rocaglamide (Roc-A), a natural product that binds PHB1 and 2, reduced cell surface PHB1 and 2, disrupted PHB-CRaf interaction, and inhibited HCV entry at low nanomolar concentrations. A structure-activity analysis of 32 synthetic Roc-A analogs indicated that the chiral, racemic version of aglaroxin C, a natural product biosynthetically related to Roc-A, displayed improved potency and therapeutic index against HCV infection. This study reveals a new class of HCV entry inhibitors that target the PHB1/2-CRaf pathway. Cellular proteins prohibitins 1 and 2 are essential HCV entry factors that function at a post-binding step. The natural compound Roc-A potently blocks HCV infection by disrupting prohibitins-CRaf interaction The Roc-A derivative, aglaroxin C, displays improved potency and therapeutic index towards HCV infection
Current FDA-approved HCV drugs all target viral proteins. We now demonstrate that a group of small molecules, the rocaglates, potently block HCV entry at low nanomolar concentrations. Roc-A inhibits HCV entry by disrupting the important interaction between two pan-genomic HCV entry factors, PHB1 and 2, and the signaling molecule CRaf. Overall, Roc-A and related rocaglates represent a new class of compounds that hold significant therapeutic promise in treating HCV infection.
Collapse
Affiliation(s)
- Shufeng Liu
- Center for Immunology and Infectious Diseases, Biosciences Division, SRI International, Harrisonburg, VA 22802, USA
| | - Wenyu Wang
- Department of Chemistry, Center for Molecular Discovery (BU-CMD), Boston University, 590 Commonwealth Avenue, Boston, MA 02215, USA
| | - Lauren E Brown
- Department of Chemistry, Center for Molecular Discovery (BU-CMD), Boston University, 590 Commonwealth Avenue, Boston, MA 02215, USA
| | - Chao Qiu
- Shanghai Public Health Clinical Center, Institutes of Biomedical Sciences, Key Laboratory of Medical Molecular Virology of Ministry of Education/Health, Fudan University, 2901 Caolang Road, Shanghai 201508, China
| | - Neil Lajkiewicz
- Department of Chemistry, Center for Molecular Discovery (BU-CMD), Boston University, 590 Commonwealth Avenue, Boston, MA 02215, USA
| | - Ting Zhao
- College of Pharmacy, University of Michigan, Ann Arbor, MI 48109, USA
| | - Jianhua Zhou
- Department of Urology, School of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA 15232, USA
| | - John A Porco
- Department of Chemistry, Center for Molecular Discovery (BU-CMD), Boston University, 590 Commonwealth Avenue, Boston, MA 02215, USA
| | - Tony T Wang
- Center for Immunology and Infectious Diseases, Biosciences Division, SRI International, Harrisonburg, VA 22802, USA
| |
Collapse
|
74
|
Overexpression of prohibitin-1 inhibits RANKL-induced activation of p38-Elk-1-SRE signaling axis blocking MKK6 activity. Biochem Biophys Res Commun 2015; 463:1028-33. [DOI: 10.1016/j.bbrc.2015.06.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 06/08/2015] [Indexed: 12/21/2022]
|
75
|
Long-circulating siRNA nanoparticles for validating Prohibitin1-targeted non-small cell lung cancer treatment. Proc Natl Acad Sci U S A 2015; 112:7779-84. [PMID: 26056316 DOI: 10.1073/pnas.1505629112] [Citation(s) in RCA: 146] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
RNA interference (RNAi) represents a promising strategy for identification and validation of putative therapeutic targets and for treatment of a myriad of important human diseases including cancer. However, the effective systemic in vivo delivery of small interfering RNA (siRNA) to tumors remains a formidable challenge. Using a robust self-assembly strategy, we develop a unique nanoparticle (NP) platform composed of a solid polymer/cationic lipid hybrid core and a lipid-poly(ethylene glycol) (lipid-PEG) shell for systemic siRNA delivery. The new generation lipid-polymer hybrid NPs are small and uniform, and can efficiently encapsulate siRNA and control its sustained release. They exhibit long blood circulation (t1/2 ∼ 8 h), high tumor accumulation, effective gene silencing, and negligible in vivo side effects. With this RNAi NP, we delineate and validate the therapeutic role of Prohibitin1 (PHB1), a target protein that has not been systemically evaluated in vivo due to the lack of specific and effective inhibitors, in treating non-small cell lung cancer (NSCLC) as evidenced by the drastic inhibition of tumor growth upon PHB1 silencing. Human tissue microarray analysis also reveals that high PHB1 tumor expression is associated with poorer overall survival in patients with NSCLC, further suggesting PHB1 as a therapeutic target. We expect this long-circulating RNAi NP platform to be of high interest for validating potential cancer targets in vivo and for the development of new cancer therapies.
Collapse
|
76
|
Choi M, Chaudhari HN, Ji YR, Ryoo ZY, Kim SW, Yun JW. Effect of estrogen on expression of prohibitin in white adipose tissue and liver of diet-induced obese rats. Mol Cell Biochem 2015; 407:181-96. [DOI: 10.1007/s11010-015-2468-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 05/29/2015] [Indexed: 12/11/2022]
|
77
|
Prohibitin Is Involved in Patients with IgG4 Related Disease. PLoS One 2015; 10:e0125331. [PMID: 25932630 PMCID: PMC4416882 DOI: 10.1371/journal.pone.0125331] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 03/11/2015] [Indexed: 12/24/2022] Open
Abstract
Objective IgG4-related disease (IgG4-RD) is a chronic systemic disease involved in many organs and tissues. As only limited autoantigens have been found since the beginning of this century, the aim of this study was to reveal new candidate autoantigens of IgG4-RD. Methods Multiple cell lines including HT-29, EA.hy926, HEK 293 and HepG2 were used to test the binding ability of circulating autoantibodies from IgG4-RD sera. The amino-acid sequence was then analyzed by matrix-assisted laser desorption/ionization time-of-flight tandem (MALDI-TOF/TOF) mass spectrometry. After the cloning and expression of recombinant putative autoantigen in a bacterial expression system, the corresponding immuno assay was set up and utilized to observe the prevalence of serum autoantibodies in a large set of confirmed clinical samples. Results One positive autoantigen was identified as prohibitin. ELISA analysis showed that a majority of patients with IgG4-RD have antibodies against prohibitin. Anti-prohibitin antibodies were present in the sera of patients with definite autoimmune pancreatitis (25/34; 73.5%), Mikulicz’s disease (8/15; 53.3%), retroperitoneal fibrosis (6/11; 54.5%), other probable IgG4-RD (26/29; 89.7%) and Sjögren’s syndrome (4/30; 13.3%) but not in apparently healthy donors (1/70; 1.4%). Conclusions An association between prohibitin and patients with some IgG4-RD was observed, although the results were quite heterogeneous among different individuals within autoimmune pancreatitis, Mikulicz’s disease and retroperitoneal fibrosis.
Collapse
|
78
|
Zheng R, Jiang Y, Wang X. [The establishment of Raji drug-resistant cell line and analyses of prohibitin and miR-27a expression]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2015; 36:326-30. [PMID: 25916297 PMCID: PMC7342615 DOI: 10.3760/cma.j.issn.0253-2727.2015.04.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To establish Raji adriamycin (ADR)-resistant cell lines and analysis the expression of mitochondria Prohibitin (PHB) and microRNA-27a (miR-27a), as well as discuss its clinical significance. METHODS Built ADR-resistant Raji cells, detected their resistant index and drug-resistant spectrum and stability, observed their morphology and growth characteristics in general; evaluated the expression of phb mRNA and miR-27a in ADR-resistant cells (Raji/A) and sensitive cells (Raji/S) via real-time quantitative polymerase chain reaction (RT-PCR). RESULTS The ADR-resistant Raji cell lines were built; expression of PHB1 mRNA in Raji/A was evidently higher than in Raji/S (P<0.05), the expressing difference of PHB2 mRNA in Raji/A and Raji/S was statistically meaningless (P>0.05), the expression of miR-27a in Raji/A was much higher than in Raji/S (P<0.05). CONCLUSION By building the experimental model of Raji ADR-resistant cell lines, high expression level of PHB1 and miR-27a were detected in the cell lines, indicating that PHB1 and miR-27a may be associated with ADR-resistance of Raji cells.
Collapse
Affiliation(s)
- Rongli Zheng
- Department of Hematology, Provincial Hospital Affiliated to Shandong University, Ji'nan 250021, China
| | - Yujie Jiang
- Department of Hematology, Provincial Hospital Affiliated to Shandong University, Ji'nan 250021, China
| | - Xin Wang
- Department of Hematology, Provincial Hospital Affiliated to Shandong University, Ji'nan 250021, China
| |
Collapse
|
79
|
Prohibitin as a novel autoantigen in rheumatoid arthritis. Cent Eur J Immunol 2015; 40:78-82. [PMID: 26155187 PMCID: PMC4472543 DOI: 10.5114/ceji.2015.50837] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Accepted: 12/01/2014] [Indexed: 12/29/2022] Open
Abstract
The aim of this study The aim of this study was to verify whether prohibitin is a novel autoantigen in rheumatoid arthritis. Material and methods First, recombinant human prohibitin (rhPHB) protein was cloned, expressed, and purified. Then the anti-prohibitin autoantibodies were detected by western blotting by using rhPHB protein to incubate sera from patients with rheumatoid arthritis (RA). Next, immunoprecipitation was employed to further illustrate whether anti-prohibitin antibodies exist in RA patients. And finally, autoantibodies against the rhPHB protein were investigated using a homemade ELISA kit through the assessment of 258 real clinical samples. Results It was revealed that anti-prohibitin antibodies existed in the sera of patients with RA. Reactivity of serum IgG against rhPHB was detected in 26 of 86 RA patients (30.3%), 7 of 86 systemic lupus erythematosus (SLE) patients (8.1%), and 1 of 86 apparently healthy donors (HC) (1.2%). Conclusions Prohibitin was proved to be a novel autoantigen and the corresponding anti-prohibitin autoantibodies were present in the RA patients' blood circulation.
Collapse
|
80
|
Bavelloni A, Piazzi M, Raffini M, Faenza I, Blalock WL. Prohibitin 2: At a communications crossroads. IUBMB Life 2015; 67:239-54. [PMID: 25904163 DOI: 10.1002/iub.1366] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 02/06/2015] [Indexed: 01/02/2023]
Abstract
Prohibitins (PHBs) are a highly conserved class of proteins first discovered as inhibitors of cellular proliferation. Since then PHBs have been found to have a significant role in transcription, nuclear signaling, mitochondrial structural integrity, cell division, and cellular membrane metabolism, placing these proteins among the key regulators of pathologies such as cancer, neuromuscular degeneration, and other metabolic diseases. The human genome encodes two PHB proteins, prohibitin 1 (PHB1) and prohibitin 2 (PHB2), which function not only as a heterodimeric complex, but also independently. While many previous reviews have focused on the better characterized prohibitin, PHB1, this review focuses on PHB2 and new data concerning its cellular functions both in complex with PHB1 and independent of PHB1.
Collapse
Affiliation(s)
- Alberto Bavelloni
- Laboratory of Musculoskeletal Cell Biology, Rizzoli Orthopedic Institute, Bologna, Italy.,Laboratory RAMSES, Rizzoli Orthopedic Institute, Bologna, Italy
| | - Manuela Piazzi
- Department of Biomedical Sciences, University of Bologna, Bologna, Italy
| | - Mirco Raffini
- Laboratory RAMSES, Rizzoli Orthopedic Institute, Bologna, Italy
| | - Irene Faenza
- Department of Biomedical Sciences, University of Bologna, Bologna, Italy
| | - William L Blalock
- Laboratory of Musculoskeletal Cell Biology, Rizzoli Orthopedic Institute, Bologna, Italy.,National Research Council of Italy, Institute of Molecular Genetics, Bologna, Italy
| |
Collapse
|
81
|
Triplett JC, Zhang Z, Sultana R, Cai J, Klein JB, Büeler H, Butterfield DA. Quantitative expression proteomics and phosphoproteomics profile of brain from PINK1 knockout mice: insights into mechanisms of familial Parkinson's disease. J Neurochem 2015; 133:750-65. [PMID: 25626353 DOI: 10.1111/jnc.13039] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 12/08/2014] [Accepted: 01/12/2015] [Indexed: 12/27/2022]
Abstract
Parkinson's disease (PD) is an age-related, neurodegenerative motor disorder characterized by progressive degeneration of dopaminergic neurons in the substantia nigra pars compacta and presence of α-synuclein-containing protein aggregates. Mutations in the mitochondrial Ser/Thr kinase PTEN-induced kinase 1 (PINK1) are associated with an autosomal recessive familial form of early-onset PD. Recent studies have suggested that PINK1 plays important neuroprotective roles against mitochondrial dysfunction by phosphorylating and recruiting Parkin, a cytosolic E3 ubiquitin ligase, to facilitate elimination of damaged mitochondria via autophagy-lysosomal pathways. Loss of PINK1 in cells and animals leads to various mitochondrial impairments and oxidative stress, culminating in dopaminergic neuronal death in humans. Using a 2-D polyacrylamide gel electrophoresis proteomics approach, the differences in expressed brain proteome and phosphoproteome between 6-month-old PINK1-deficient mice and wild-type mice were identified. The observed changes in the brain proteome and phosphoproteome of mice lacking PINK1 suggest that defects in signaling networks, energy metabolism, cellular proteostasis, and neuronal structure and plasticity are involved in the pathogenesis of familial PD. Mutations in PINK1 are associated with an early-onset form of Parkinson's disease (PD). This study examines changes in the proteome and phosphoproteome of the PINK1 knockout mouse brain. Alterations were noted in several key proteins associated with: increased oxidative stress, aberrant cellular signaling, altered neuronal structure, decreased synaptic plasticity, reduced neurotransmission, diminished proteostasis networks, and altered metabolism. 14-3-3ε, 14-3-3 protein epsilon; 3-PGDH, phosphoglycerate dehydrogenase; ALDOA, aldolase A; APT1, acyl-protein thioesterase 1; CaM, calmodulin; CBR3, carbonyl reductase [NADPH] 3; ENO2, gamma-enolase; HPRT, hypoxanthine-guanine phosphoribosyltransferase; HSP70, heat-shock-related 70 kDa protein 2; IDHc, cytoplasmic isocitrate dehydrogenase [NADP+]; MAPK1, mitogen-activated protein kinase 1; MEK1, MAP kinase kinase 1; MDHc, cytoplasmic malate dehydrogenase; NFM, neurofilament medium polypeptide; NSF, N-ethylmaleimide-sensitive fusion protein; PHB, prohibitin; PINK1, PTEN-induced putative kinase 1; PPIaseA, peptidyl-prolyl cis-trans isomerase A; PSA2, proteasome subunit alpha type-2; TK, transketolase; VDAC-2, voltage-dependent anion-selective channel protein 2.
Collapse
Affiliation(s)
- Judy C Triplett
- Department of Chemistry, University of Kentucky, Lexington, Kentucky, USA
| | | | | | | | | | | | | |
Collapse
|
82
|
Akt phosphorylates Prohibitin 1 to mediate its mitochondrial localization and promote proliferation of bladder cancer cells. Cell Death Dis 2015; 6:e1660. [PMID: 25719244 PMCID: PMC4669803 DOI: 10.1038/cddis.2015.40] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Revised: 12/07/2014] [Accepted: 12/19/2014] [Indexed: 12/29/2022]
Abstract
Bladder cancer (BC) is very common and associated with significant morbidity and mortality, though the molecular underpinnings of its origination and progression remain poorly understood. In this study, we demonstrate that Prohibitin 1 (PHB) was overexpressed in human BC tissues and that PHB upregulation was associated with poor prognosis. We also found that PHB was necessary and sufficient for BC cell proliferation. Interestingly, the overexpressed PHB was primarily found within mitochondria, and we provide the first direct evidence that phosphorylation by Akt at Thr258 of PHB induces this mitochondrial localization. Inhibiton of Akt reverses these effects and inhibited the proliferation of BC cells. Finally, the phosphorylation of PHB was required for BC cell proliferation, further implicating the importance of the Akt in BC. Taken together, these findings identify the Akt/PHB signaling cascade as a novel mechanism of cancer cell proliferation and provide the scientific basis for the establishment of PHB as a new prognostic marker and treatment target for BC.
Collapse
|
83
|
Li T, Wang Y, Gao Y, Li Q. Identification and characterisation of the anti-oxidative stress properties of the lamprey prohibitin 2 gene. FISH & SHELLFISH IMMUNOLOGY 2015; 42:447-456. [PMID: 25463290 DOI: 10.1016/j.fsi.2014.11.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 11/13/2014] [Accepted: 11/17/2014] [Indexed: 06/04/2023]
Abstract
The highly conserved protein prohibitin 2 (PHB2) has been implicated as a cell-surface receptor in the regulation of proliferation, apoptosis, transcription, and mitochondrial protein folding. In the present study, we identified a Lampetra morii homologue of PHB2, Lm-PHB2, showing greater than 61.8% sequence identity with its homologues. Phylogenetic analysis indicated that the position of Lm-PHB2 is consistent with lamprey phylogeny. Expression of the Lm-PHB2 protein was nearly equivalent in the heart, liver, kidneys, intestines, and muscles of normal lampreys. However, the Lm-PHB2 protein was down-regulated in the myocardia of lampreys challenged for 5 days with adriamycin (Adr), followed by a significant up-regulation 10 days after treatment. In vitro, recombinant Lm-PHB2 (rLm-PHB2) protein could significantly enhance the H2O2-induced oxidative stress tolerance in Chang liver (CHL) cells. Further mechanism studies indicated that the nucleus-to-mitochondria translocation of Lm-PHB2 was closely involved in the oxidative stress protection. Our results suggests that the strategies to modulate Lm-PHB2 levels may constitute a novel therapeutic approach for myocardial injury and liver inflammatory diseases, conditions in which oxidative stress plays a critical role in tissue injury and inflammation.
Collapse
Affiliation(s)
- Tiesong Li
- Life Science College of Liaoning Normal University, Dalian 116029, China; Lamprey Research Centre, Liaoning Normal University, Dalian 116029, China.
| | - Ying Wang
- Life Science College of Liaoning Normal University, Dalian 116029, China; Lamprey Research Centre, Liaoning Normal University, Dalian 116029, China
| | - Yang Gao
- Life Science College of Liaoning Normal University, Dalian 116029, China; Lamprey Research Centre, Liaoning Normal University, Dalian 116029, China
| | - Qingwei Li
- Life Science College of Liaoning Normal University, Dalian 116029, China; Lamprey Research Centre, Liaoning Normal University, Dalian 116029, China.
| |
Collapse
|
84
|
Methyl donor deficiency in H9c2 cardiomyoblasts induces ER stress as an important part of the proteome response. Int J Biochem Cell Biol 2015; 59:62-72. [DOI: 10.1016/j.biocel.2014.11.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 11/13/2014] [Accepted: 11/28/2014] [Indexed: 12/15/2022]
|
85
|
Zhong N, Cui Y, Zhou X, Li T, Han J. Identification of prohibitin 1 as a potential prognostic biomarker in human pancreatic carcinoma using modified aqueous two-phase partition system combined with 2D-MALDI-TOF-TOF-MS/MS. Tumour Biol 2015; 36:1221-31. [PMID: 25344214 DOI: 10.1007/s13277-014-2742-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 10/14/2014] [Indexed: 11/28/2022] Open
Abstract
Membrane proteins are an important source of potential targets for anticancer drugs or biomarkers for early diagnosis. In this study, we used a modified aqueous two-phase partition system combined with two-dimensional (2D) matrix-assisted laser desorption ionization (MALDI) time of flight (TOF) mass spectrometry (MS, 2D-MALDI-TOF-TOF-MS/MS) analysis to isolate and identify membrane proteins in PANC-1 pancreatic cancer cells. Using this method, we identified 55 proteins, of which 31 (56.4 %) were membrane proteins, which, according to gene ontology annotation, are associated with various cellular processes including cell signal transduction, differentiation, and apoptosis. Immunohistochemical analysis showed that the expression level of one of the identified mitochondria membrane proteins, prohibitin 1 (PHB1), is correlated with pancreatic carcinoma differentiation; PHB1 is expressed at a higher level in normal pancreatic tissue than in well-differentiated carcinoma tissue. Further studies showed that PHB1 plays a proapoptotic role in human pancreatic cancer cells, which suggests that PHB1 has antitumorigenic properties. In conclusion, we have provided a modified method for isolating and identifying membrane proteins and demonstrated that PHB1 may be a promising biomarker for early diagnosis and therapy of pancreatic (and potentially other) cancers.
Collapse
Affiliation(s)
- Ning Zhong
- School of Medicine, Shandong University, Jinan, China
| | | | | | | | | |
Collapse
|
86
|
Abstract
In ageing populations many patients have multiple diseases characterised by acceleration of the normal ageing process. Better understanding of the signalling pathways and cellular events involved in ageing shows that these are characteristic of many chronic degenerative diseases, such as chronic obstructive pulmonary disease (COPD), chronic cardiovascular and metabolic diseases, and neurodegeneration. Common mechanisms have now been identified in these diseases, which show evidence of cellular senescence with telomere shortening, activation of PI3K–AKT–mTOR signalling, impaired autophagy, mitochondrial dysfunction, stem cell exhaustion, epigenetic changes, abnormal microRNA profiles, immunosenescence and low grade chronic inflammation (“inflammaging”). Many of these pathways are driven by chronic oxidative stress. There is also a reduction in anti-ageing molecules, such as sirtuins and Klotho, which further accelerates the ageing process. Understanding these molecular mechanisms has identified several novel therapeutic targets and several drugs have already been developed that may slow the ageing process, as well as lifestyle interventions, such as diet and physical activity. This indicates that in the future new treatment approaches may target the common pathways involved in multimorbidity and this area of research should be given high priority. Thus, COPD should be considered as a component of multimorbidity and common disease pathways, particularly accelerated ageing, should be targeted.
Collapse
|
87
|
Zhang F, Liu H, Jiang G, Wang H, Wang X, Wang H, Fang R, Cai S, Du J. Changes in the proteomic profile during the differential polarization status of the human monocyte-derived macrophage THP-1 cell line. Proteomics 2015; 15:773-86. [PMID: 25411139 DOI: 10.1002/pmic.201300494] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Revised: 10/12/2014] [Accepted: 11/17/2014] [Indexed: 12/25/2022]
Abstract
Macrophages are heterogeneous and plastic populations that are an essential component of inflammation and host defense. To understand how macrophages respond to cytokine signals, we used 2DE to identify protein profiles in macrophages stimulated with interleukin 4 (M2) and those stimulated with lipopolysaccharide and interferon γ (M1). In total, 32 differentially expressed proteins in THP-1 cells were identified by MALDI-TOF MS/MS analysis. The different proteins were mainly involved in cellular structure, protein metabolism, stress response, oxidative response, and nitric oxide production during macrophage polarization. In particular, proteins playing important roles in production of nitric oxide (NO) were downregulated in M2 macrophages. Many antioxidant and heat shock proteins, which are related to oxidative response, were upregulated in M2 macrophages. More importantly, a remarkable decrease in intracellular ROS and NO production were detected in M2 macrophages. Our results provide a proteomic profile of differentially polarized macrophages and validate the function of the identified proteins, which may indicate possible mechanism of macrophage polarization process.
Collapse
Affiliation(s)
- Fan Zhang
- Department of Microbial and Biochemical Pharmacy, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | | | | | | | | | | | | | | | | |
Collapse
|
88
|
Liu X, Yang G, Fan Q, Wang L. Proteomic profile in glomeruli of type-2 diabetic KKAy mice using 2-dimensional differential gel electrophoresis. Med Sci Monit 2014; 20:2705-13. [PMID: 25515740 PMCID: PMC4278697 DOI: 10.12659/msm.893078] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background Diabetic nephropathy (DN) is a leading cause of end-stage renal disease. To search for glomerular proteins associated with early-stage DN, glomeruli of spontaneous type 2 diabetic KKAy mice were analyzed by 2-dimensional differential gel electrophoresis (2D-DIGE). Material/Methods Glomeruli of 20-week spontaneous type 2 diabetic KKAy mice and age-matched C57BL/6 mice were isolated by kidney perfusion with magnetic beads. Proteomic profiles of glomeruli were investigated by using 2D-DIGE and matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry. Western blot analysis was used to confirm the results of proteomics. Immunohistochemical and semi-quantitative analysis were used to confirm the differential expression of prohibitin and annexin A2 in glomeruli. Results We identified 19 differentially expressed proteins – 17 proteins were significantly up-regulated and 2 proteins were significantly down-regulated in glomeruli of diabetic KKAy mice. Among them, prohibitin and annexin A2 were up-regulated and Western blot analysis validated the same result in proteomics. Immunohistochemical analysis also revealed up-regulation of prohibitin and annexin A2 in glomeruli of KKAy mice. Conclusions Our findings suggest that prohibitin and annexin A2 may be associated with early-stage DN. Further functional research might help to reveal the pathogenesis of DN.
Collapse
Affiliation(s)
- Xiaodan Liu
- Department of Nephrology, First Affiliated Hospital, China Medical University, Shenyang, Liaoning, China (mainland)
| | - Gang Yang
- Department of Nephrology, First Affiliated Hospital, China Medical University, Shenyang, Liaoning, China (mainland)
| | - Qiuling Fan
- Department of Nephrology, First Affiliated Hospital, China Medical University, Shenyang, Liaoning, China (mainland)
| | - Lining Wang
- Department of Nephrology, First Affiliated Hospital, China Medical University, Shenyang, Liaoning, China (mainland)
| |
Collapse
|
89
|
miR-361-regulated prohibitin inhibits mitochondrial fission and apoptosis and protects heart from ischemia injury. Cell Death Differ 2014; 22:1058-68. [PMID: 25501599 DOI: 10.1038/cdd.2014.200] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 10/07/2014] [Accepted: 10/20/2014] [Indexed: 11/08/2022] Open
Abstract
Cardiovascular disease remains the leading cause of morbidity and mortality worldwide. Emerging evidences suggest that the abnormal mitochondrial fission participates in pathogenesis of cardiac diseases, including myocardial infarction (MI) and heart failure. However, the molecular components regulating mitochondrial network in the heart remain largely unidentified. Here we report that miR-361 and prohibitin 1 (PHB1) constitute an axis that regulates mitochondrial fission and apoptosis. The results show that PHB1 attenuates mitochondrial fission and apoptosis in response to hydrogen peroxide treatment in cardiomyocytes. Cardiac-specific PHB1 transgenic mice show reduced mitochondrial fission and myocardial infarction sizes after myocardial infarction surgery. MiR-361 is responsible for the dysfunction of PHB1 and suppresses the translation of PHB1. Knockdown of miR-361 reduces mitochondrial fission and apoptosis in vivo and in vitro. MiR-361 cardiac-specific transgenic mice represent elevated mitochondrial fission and myocardial infarction sizes upon myocardial ischemia injury. This study identifies a novel signaling pathway composed of miR-361 and PHB1 that regulates mitochondrial fission program and apoptosis. This discovery will shed new light on the therapy of myocardial infarction and heart failure.
Collapse
|
90
|
Pérez-Perarnau A, Preciado S, Palmeri CM, Moncunill-Massaguer C, Iglesias-Serret D, González-Gironès DM, Miguel M, Karasawa S, Sakamoto S, Cosialls AM, Rubio-Patiño C, Saura-Esteller J, Ramón R, Caja L, Fabregat I, Pons G, Handa H, Albericio F, Gil J, Lavilla R. A trifluorinated thiazoline scaffold leading to pro-apoptotic agents targeting prohibitins. Angew Chem Int Ed Engl 2014; 53:10150-4. [PMID: 25196378 DOI: 10.1002/anie.201405758] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Indexed: 12/31/2022]
Abstract
A new class of small molecules, with an unprecedented trifluorothiazoline scaffold, were synthesized and their pro-apoptotic activity was evaluated. With an EC50 in the low micromolar range, these compounds proved to be potent inducers of apoptosis in a broad spectrum of tumor cell lines, regardless of the functional status of p53. Fast structure-activity relationship studies allowed the preparation of the strongest apoptosis-inducing candidate. Using a high performance affinity purification approach, we identified prohibitins 1 and 2, key proteins involved in the maintenance of cell viability, as the targets for these compounds.
Collapse
Affiliation(s)
- Alba Pérez-Perarnau
- Departament de Ciències Fisiològiques II, University of Barcelona, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat (Spain)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
91
|
Pérez-Perarnau A, Preciado S, Palmeri CM, Moncunill-Massaguer C, Iglesias-Serret D, González-Gironès DM, Miguel M, Karasawa S, Sakamoto S, Cosialls AM, Rubio-Patiño C, Saura-Esteller J, Ramón R, Caja L, Fabregat I, Pons G, Handa H, Albericio F, Gil J, Lavilla R. A Trifluorinated Thiazoline Scaffold Leading to Pro-apoptotic Agents Targeting Prohibitins. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
92
|
Han J, Yu C, Souza RF, Theiss AL. Prohibitin 1 modulates mitochondrial function of Stat3. Cell Signal 2014; 26:2086-95. [PMID: 24975845 DOI: 10.1016/j.cellsig.2014.06.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 06/19/2014] [Indexed: 02/08/2023]
Abstract
Mitochondrial dysfunction in intestinal epithelial cells (IEC) is thought to precede the onset of inflammatory bowel diseases (IBD). Expression of Prohibitin 1 (PHB), a mitochondrial protein required for optimal electron transport chain (ETC) activity, is decreased in mucosal biopsies during active and inactive IBD. In addition to its activities as a transcription factor, Signal Transducer and Activator of Transcription 3 (Stat3) resides in the mitochondria of cells where phosphorylation at S727 is required for optimal ETC activity and protects against stress-induced mitochondrial dysfunction. Here, we show that PHB overexpression protects against mitochondrial stress and apoptosis of cultured IECs induced by TNFα, which is a pro-inflammatory cytokine involved in IBD pathogenesis. Expression of pS727-Stat3 dominant negative eliminates protection by PHB against TNFα-induced mitochondrial stress and apoptosis. PHB interacts with pS727-Stat3 in the mitochondria of cultured IECs and in colonic epithelium from wild-type mice. Our data suggest a protective role of PHB that is dependent on pS727-Stat3 to prevent mitochondrial dysfunction in IECs. Reduced levels of PHB during IBD may be an underlying factor promoting mitochondrial dysfunction of the intestinal epithelium.
Collapse
Affiliation(s)
- Jie Han
- Department of Internal Medicine, Division of Gastroenterology, Baylor Research Institute, Baylor University Medical Center, Dallas, TX, United States
| | - Chunhua Yu
- Department of Medicine, Veterans Affairs North Texas Health Care System, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Rhonda F Souza
- Department of Medicine, Veterans Affairs North Texas Health Care System, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Arianne L Theiss
- Department of Internal Medicine, Division of Gastroenterology, Baylor Research Institute, Baylor University Medical Center, Dallas, TX, United States.
| |
Collapse
|
93
|
Li-Weber M. Molecular mechanisms and anti-cancer aspects of the medicinal phytochemicals rocaglamides (=flavaglines). Int J Cancer 2014; 137:1791-9. [PMID: 24895251 DOI: 10.1002/ijc.29013] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 05/29/2014] [Accepted: 06/02/2014] [Indexed: 01/08/2023]
Abstract
Rocaglamides (= flavaglines) are potent natural anti-cancer phytochemicals that inhibit cancer growth at nanomolar concentrations by the following mechanisms: (1) inhibition of translation initiation via inhibition of phosphorylation of the mRNA cap-binding eukaryotic translation initiation factor eIF4E and stabilization of RNA-binding of the translation initiation factor eIF4A in the eIF4F complex; (2) blocking cell cycle progression by activation of the ATM/ATR-Chk1/Chk2 checkpoint pathway; (3) inactivation of the heat shock factor 1 (HSF1) leading to up-regulation of thioredoxin-interacting protein (TXNIP) and consequent reduction of glucose uptake and (4) induction of apoptosis through activation of the MAPK p38 and JNK and inhibition of the Ras-CRaf-MEK-ERK signaling pathway. Besides the anti-cancer activities, rocaglamides are also shown to protect primary cells from chemotherapy-induced cell death and alleviate inflammation- and drug-induced injury in neuronal tissues. This review will focus on the recently discovered molecular mechanisms of the actions of rocaglamides and highlights the benefits of using rocaglamides in cancer treatment.
Collapse
Affiliation(s)
- Min Li-Weber
- Tumorimmunology Program (D030), German Cancer Research Center (DKFZ), D-69120, Heidelberg, Germany
| |
Collapse
|
94
|
Leal MF, Cirilo PDR, Mazzotti TKF, Calcagno DQ, Wisnieski F, Demachki S, Martinez MC, Assumpção PP, Chammas R, Burbano RR, Smith MC. Prohibitin expression deregulation in gastric cancer is associated with the 3' untranslated region 1630 C>T polymorphism and copy number variation. PLoS One 2014; 9:e98583. [PMID: 24879411 PMCID: PMC4039508 DOI: 10.1371/journal.pone.0098583] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 05/05/2014] [Indexed: 01/03/2023] Open
Abstract
PHB is a reported oncogene and tumor suppressor in gastric cancer. Here, we evaluated whether the PHB copy number and the rs6917 polymorphism affect its expression in gastric cancer. Down-regulation and up-regulation of PHB were observed in the evaluated tumors. Reduced expression was associated with tumor dedifferentiation and cancer initiation. The T allele of the rs6917 polymorphism was associated with reduced PHB mRNA levels. Moreover, the up-regulation of PHB appeared to be regulated by the gain of additional gene copies. Thus, PHB copy number variation and differential expression of the rs6917 polymorphism may play a role in PHB transcriptional regulation.
Collapse
Affiliation(s)
- Mariana Ferreira Leal
- Disciplina de Genética, Departamento de Morfologia e Genética, Universidade Federal de São Paulo, São Paulo, SP, Brazil
- Departamento de Ortopedia e Traumatologia, Universidade Federal de São Paulo, São Paulo, SP, Brazil
- * E-mail:
| | - Priscila Daniele Ramos Cirilo
- Laboratório de Oncologia Experimental, Departamento de Radiologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
- Centro de Investigação Translacional em Oncologia, Instituto do Câncer do Estado de São Paulo, São Paulo, SP, Brazil
| | - Tatiane Katsue Furuya Mazzotti
- Laboratório de Oncologia Experimental, Departamento de Radiologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
- Centro de Investigação Translacional em Oncologia, Instituto do Câncer do Estado de São Paulo, São Paulo, SP, Brazil
| | - Danielle Queiroz Calcagno
- Disciplina de Genética, Departamento de Morfologia e Genética, Universidade Federal de São Paulo, São Paulo, SP, Brazil
- Núcleo de Pesquisa em Oncologia, Hospital Universitário João de Barros Barreto, Universidade Federal do Pará, Belém, PA, Brazil
| | - Fernanda Wisnieski
- Disciplina de Genética, Departamento de Morfologia e Genética, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Samia Demachki
- Núcleo de Pesquisa em Oncologia, Hospital Universitário João de Barros Barreto, Universidade Federal do Pará, Belém, PA, Brazil
| | - Margarita Cortes Martinez
- Laboratório de Oncologia Experimental, Departamento de Radiologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
- Centro de Investigação Translacional em Oncologia, Instituto do Câncer do Estado de São Paulo, São Paulo, SP, Brazil
| | - Paulo Pimentel Assumpção
- Núcleo de Pesquisa em Oncologia, Hospital Universitário João de Barros Barreto, Universidade Federal do Pará, Belém, PA, Brazil
| | - Roger Chammas
- Laboratório de Oncologia Experimental, Departamento de Radiologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
- Centro de Investigação Translacional em Oncologia, Instituto do Câncer do Estado de São Paulo, São Paulo, SP, Brazil
| | - Rommel Rodríguez Burbano
- Laboratório de Citogenética Humana, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil
| | - Marília Cardoso Smith
- Disciplina de Genética, Departamento de Morfologia e Genética, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| |
Collapse
|
95
|
Wang YJ, Guo XL, Li SA, Zhao YQ, Liu ZC, Lee WH, Xiang Y, Zhang Y. Prohibitin is involved in the activated internalization and degradation of protease-activated receptor 1. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2014; 1843:1393-401. [PMID: 24732013 DOI: 10.1016/j.bbamcr.2014.04.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 04/04/2014] [Accepted: 04/05/2014] [Indexed: 01/09/2023]
Abstract
The protease-activated receptor 1 (PAR1) is a G-protein-coupled receptor that is irreversibly activated by either thrombin or metalloprotease 1. Due this irrevocable activation, activated internalization and degradation are critical for PAR1 signaling termination. Prohibitin (PHB) is an evolutionarily conserved, ubiquitously expressed, pleiotropic protein and belongs to the stomatin/prohibitin/flotillin/HflK/C (SPFH) domain family. In a previous study, we found that PHB localized on the platelet membrane and participated in PAR1-mediated human platelet aggregation, suggesting that PHB likely regulates the signaling of PAR1. Unfortunately, PHB's exact function in PAR1 internalization and degradation is unclear. In the current study, flow cytometry revealed that PHB expressed on the surface of endothelial cells (HUVECs) but not cancer cells (MDA-MB-231). Further confocal microscopy revealed that PHB dynamically associates with PAR1 in a time-dependent manner following induction with PAR1-activated peptide (PAR1-AP), though differently between HUVECs and MDA-MB-231 cells. Depletion of PHB by RNA interference significantly inhibited PAR1 activated internalization and led to sustained Erk1/2 phosphorylation in the HUVECs; however, a similar effect was not observed in MDA-MB-231 cells. For both the endothelial and cancel cells, PHB repressed PAR1 degradation, while knockdown of PHB led to increased PAR1 degradation, and PHB overexpression inhibited PAR1 degradation. These results suggest that persistent PAR1 signaling due to the absence of membrane PHB and decreased PAR1 degradation caused by the upregulation of intracellular PHB in cancer cells (such as MDA-MB-231 cells) may render cells highly invasive. As such, PHB may be a novel target in future anti-cancer therapeutics, or in more refined cancer malignancy diagnostics.
Collapse
Affiliation(s)
- Yan-Jie Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | - Xiao-Long Guo
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650223, China; Kunming College of Life Science, University of Chinese Academy of Sciences Kunming, Yunnan 650204, China
| | - Sheng-An Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | - Yu-Qi Zhao
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | - Zi-Chao Liu
- Department of Life Science and Technology, Kunming University, Kunming, Yunnan 650214, China
| | - Wen-Hui Lee
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | - Yang Xiang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650223, China.
| | - Yun Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, the Chinese Academy of Sciences, Kunming, Yunnan 650223, China.
| |
Collapse
|
96
|
Wang K, Long B, Zhou LY, Liu F, Zhou QY, Liu CY, Fan YY, Li PF. CARL lncRNA inhibits anoxia-induced mitochondrial fission and apoptosis in cardiomyocytes by impairing miR-539-dependent PHB2 downregulation. Nat Commun 2014; 5:3596. [PMID: 24710105 DOI: 10.1038/ncomms4596] [Citation(s) in RCA: 364] [Impact Index Per Article: 36.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Accepted: 03/08/2014] [Indexed: 12/17/2022] Open
Abstract
Abnormal mitochondrial fission participates in the pathogenesis of many diseases. Long non-coding RNAs (lncRNAs) are emerging as new players in gene regulation, but how lncRNAs operate in the regulation of mitochondrial network is unclear. Here we report that a lncRNA, named cardiac apoptosis-related lncRNA (CARL), can suppress mitochondrial fission and apoptosis by targeting miR-539 and PHB2. The results show that PHB2 is able to inhibit mitochondrial fission and apoptosis. miR-539 is responsible for the dysfunction of PHB2 and regulates mitochondrial fission and apoptosis by targeting PHB2. Further, we show that CARL can act as an endogenous miR-539 sponge that regulates PHB2 expression, mitochondrial fission and apoptosis. Our present study reveals a model of mitochondrial fission regulation that is composed of CARL, miR-539 and PHB2. Modulation of their levels may provide a new approach for tackling apoptosis and myocardial infarction.
Collapse
Affiliation(s)
- Kun Wang
- 1] Division of Cardiovascular Research, State Key Laboratory of Biomembrane and Membrane Biotechnology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China [2]
| | - Bo Long
- 1] Division of Cardiovascular Research, State Key Laboratory of Biomembrane and Membrane Biotechnology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China [2]
| | - Lu-Yu Zhou
- 1] Division of Cardiovascular Research, State Key Laboratory of Biomembrane and Membrane Biotechnology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China [2]
| | - Fang Liu
- 1] Division of Cardiovascular Research, State Key Laboratory of Biomembrane and Membrane Biotechnology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China [2]
| | - Qun-Yong Zhou
- 1] Department of Pharmacology, University of California, Irvine, California 92697, USA [2]
| | - Cui-Yun Liu
- 1] Division of Cardiovascular Research, State Key Laboratory of Biomembrane and Membrane Biotechnology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China [2]
| | - Yuan-Yuan Fan
- 1] Division of Cardiovascular Research, State Key Laboratory of Biomembrane and Membrane Biotechnology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China [2]
| | - Pei-Feng Li
- 1] Division of Cardiovascular Research, State Key Laboratory of Biomembrane and Membrane Biotechnology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China [2]
| |
Collapse
|
97
|
Shi J, Xu Y, Xu X, Zhu X, Pridgen E, Wu J, Votruba AR, Swami A, Zetter BR, Farokhzad OC. Hybrid lipid-polymer nanoparticles for sustained siRNA delivery and gene silencing. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2014; 10:897-900. [PMID: 24650883 DOI: 10.1016/j.nano.2014.03.006] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 02/20/2014] [Accepted: 03/07/2014] [Indexed: 12/31/2022]
Abstract
UNLABELLED The development of controlled-release nanoparticle (NP) technologies has great potential to further improve the therapeutic efficacy of RNA interference (RNAi), by prolonging the release of small interfering RNA (siRNA) for sustained, long-term gene silencing. Herein, we present an NP platform with sustained siRNA-release properties, which can be self-assembled using biodegradable and biocompatible polymers and lipids. The hybrid lipid-polymer NPs showed excellent silencing efficacy, and the temporal release of siRNA from the NPs continued for over one month. When tested on luciferase-expressed HeLa cells and A549 lung carcinoma cells after short-term transfection, the siRNA NPs showed greater sustained silencing activity than lipofectamine 2000-siRNA complexes. More importantly, the NP-mediated sustained silencing of prohibitin 1 (PHB1) generates more effective tumor cell growth inhibition in vitro and in vivo than the lipofectamine complexes. We expect that this sustained-release siRNA NP platform could be of interest in both fundamental biological studies and clinical applications. FROM THE CLINICAL EDITOR Emerging gene silencing applications could be greatly enhanced by prolonging the release of siRNA for sustained gene silencing. This team of scientists presents a hybrid lipid-polymer nanoparticle platform that successfully accomplishes this goal, paving the way to future research studies and potential clinical applications.
Collapse
Affiliation(s)
- Jinjun Shi
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
| | - Yingjie Xu
- Vascular Biology Program, Children's Hospital Boston, Harvard Medical School, Boston, MA, USA
| | - Xiaoyang Xu
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Xi Zhu
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Key Laboratory of Drug Targeting and Drug Delivery System, West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Eric Pridgen
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Jun Wu
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Alexander R Votruba
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Archana Swami
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Bruce R Zetter
- Vascular Biology Program, Children's Hospital Boston, Harvard Medical School, Boston, MA, USA.
| | - Omid C Farokhzad
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; King Abdulaziz University, Jeddah, Saudi Arabia.
| |
Collapse
|
98
|
Kurinami H, Shimamura M, Ma T, Qian L, Koizumi K, Park L, Klann E, Manfredi G, Iadecola C, Zhou P. Prohibitin viral gene transfer protects hippocampal CA1 neurons from ischemia and ameliorates postischemic hippocampal dysfunction. Stroke 2014; 45:1131-8. [PMID: 24619393 DOI: 10.1161/strokeaha.113.003577] [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: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE Prohibitin is a multi-functional protein involved in numerous cellular activities. Prohibitin overexpression protects neurons from injury in vitro, but it is unclear whether prohibitin can protect selectively vulnerable hippocampal CA1 neurons in a clinically relevant injury model in vivo and, if so, whether the salvaged neurons remain functional. METHODS A mouse model of transient forebrain ischemia that mimics the brain damage produced by cardiac arrest in humans was used to test whether prohibitin expression protects CA1 neurons from injury. Prohibitin-expressing viral vector was microinjected in mouse hippocampus to upregulate prohibitin. RESULTS Prohibitin overexpression protected CA1 neurons from transient forebrain ischemia. The protection was associated with dampened postischemic reactive oxygen species generation, reduced mitochondrial cytochrome c release, and decreased caspase-3 activation. Importantly, the improvement in CA1 neuronal viability translated into an improvement in hippocampal function: prohibitin expression ameliorated the spatial memory deficit induced by ischemia, assessed by the Y-maze test, and restored postischemic synaptic plasticity assessed by long-term potentiation, indicating that the neurons spared form ischemic damage were functionally competent. CONCLUSIONS These data demonstrate that prohibitin overexpression protects highly vulnerable CA1 neurons from ischemic injury in vivo and suggest that the effect is mediated by reduction of postischemic reactive oxygen species generation and preservation of mitochondrial outer membrane integrity that prevents activation of apoptosis. Measures to enhance prohibitin expression could have translational value in ischemic brain injury and, possibly, other forms of brain injury associated with mitochondrial dysfunction.
Collapse
Affiliation(s)
- Hitomi Kurinami
- From the Brain and Mind Research Institute, Weill Cornell Medical College, New York, NY (H.K., M.S., L.Q., K.K., L.P., G.M., C.I., P.Z.); and Center for Neural Science, New York University, New York, NY (T.M., E.K.)
| | | | | | | | | | | | | | | | | | | |
Collapse
|
99
|
Phosphoproteomics and bioinformatics analyses of spinal cord proteins in rats with morphine tolerance. PLoS One 2014; 9:e83817. [PMID: 24392096 PMCID: PMC3879267 DOI: 10.1371/journal.pone.0083817] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Accepted: 11/08/2013] [Indexed: 12/19/2022] Open
Abstract
Introduction Morphine is the most effective pain-relieving drug, but it can cause unwanted side effects. Direct neuraxial administration of morphine to spinal cord not only can provide effective, reliable pain relief but also can prevent the development of supraspinal side effects. However, repeated neuraxial administration of morphine may still lead to morphine tolerance. Methods To better understand the mechanism that causes morphine tolerance, we induced tolerance in rats at the spinal cord level by giving them twice-daily injections of morphine (20 µg/10 µL) for 4 days. We confirmed tolerance by measuring paw withdrawal latencies and maximal possible analgesic effect of morphine on day 5. We then carried out phosphoproteomic analysis to investigate the global phosphorylation of spinal proteins associated with morphine tolerance. Finally, pull-down assays were used to identify phosphorylated types and sites of 14-3-3 proteins, and bioinformatics was applied to predict biological networks impacted by the morphine-regulated proteins. Results Our proteomics data showed that repeated morphine treatment altered phosphorylation of 10 proteins in the spinal cord. Pull-down assays identified 2 serine/threonine phosphorylated sites in 14-3-3 proteins. Bioinformatics further revealed that morphine impacted on cytoskeletal reorganization, neuroplasticity, protein folding and modulation, signal transduction and biomolecular metabolism. Conclusions Repeated morphine administration may affect multiple biological networks by altering protein phosphorylation. These data may provide insight into the mechanism that underlies the development of morphine tolerance.
Collapse
|
100
|
Song W, Tian L, Li SS, Shen DY, Chen QX. The aberrant expression and localization of prohibitin during apoptosis of human cholangiocarcinoma Mz-ChA-1 cells. FEBS Lett 2013; 588:422-8. [PMID: 24380853 DOI: 10.1016/j.febslet.2013.12.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 12/01/2013] [Accepted: 12/05/2013] [Indexed: 01/18/2023]
Abstract
In this study, we aimed to investigate the aberrant expression and shift in localization of prohibitin (PHB) during apoptosis of human cholangiocarcinoma cells. Our study demonstrated that PHB was expressed primarily in the cytoplasm and only a little in the nucleus. However, PHB expression significantly decreased, and its localization shifted from the cytoplasm to the nucleus during apoptosis. PHB co-localized with AIF, Rb, p53, and c-Fos, but the region of co-localization was altered after treatment. Meanwhile, we detected a direct interaction between PHB and both p53 and Rb in Mz-ChA-1 cells. These results suggest that the altered localization and expression of PHB, as well as its co-localization with related oncogenes and tumor suppressor genes, can affect the apoptosis of Mz-ChA-1 cells.
Collapse
Affiliation(s)
- Wei Song
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361005, China; School of Life Sciences and Engineering, Henan University of Urban Construction, Pingdingshan 467044, China
| | - Ling Tian
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Shan-Shan Li
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Dong-Yan Shen
- Center Laboratory, The First Affiliated Hospital of Xiamen University, Xiamen 361003, China.
| | - Qing-Xi Chen
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen 361005, China.
| |
Collapse
|