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Wadhwa R, Wang J, Shefrin S, Zhang H, Sundar D, Kaul SC. Molecular Insights into the Anticancer Activity of Withaferin-A: The Inhibition of Survivin Signaling. Cancers (Basel) 2024; 16:3090. [PMID: 39272948 PMCID: PMC11394585 DOI: 10.3390/cancers16173090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Revised: 08/28/2024] [Accepted: 08/30/2024] [Indexed: 09/15/2024] Open
Abstract
Survivin, a member of the IAP family, functions as a homodimer and inhibits caspases, the key enzymes involved in apoptosis. Several Survivin inhibitors, including YM-155, Debio1143, EM1421, LQZ-7I, and TL32711, have emerged as potential anticancer drugs awaiting validation in clinical trials. Due to the high cost and adverse side effects of synthetic drugs, natural compounds with similar activity have also been in demand. In this study, we conducted molecular docking assays to evaluate the ability of Wi-A and Wi-N to block Survivin dimerization. We found that Wi-A, but not Wi-N, can bind to and prevent the homodimerization of Survivin, similar to YM-155. Therefore, we prepared a Wi-A-rich extract from Ashwagandha leaves (Wi-AREAL). Experimental analyses of human cervical carcinoma cells (HeLa and ME-180) treated with Wi-AREAL (0.05-0.1%) included assessments of viability, apoptosis, cell cycle, migration, invasion, and the expression levels (mRNA and protein) of molecular markers associated with these phenotypes. We found that Wi-AREAL led to growth arrest mediated by the upregulation of p21WAF1 and the downregulation of several proteins (CDK1, Cyclin B, pRb) involved in cell cycle progression. Furthermore, Wi-AREAL treatment activated apoptosis signaling, as evidenced by reduced PARP-1 and Bcl-2 levels, increased procaspase-3, and elevated Cytochrome C. Additionally, treating cells with a nontoxic low concentration (0.01%) of Wi-AREAL inhibited migration and invasion, as well as EMT (epithelial-mesenchymal transition) signaling. By combining computational and experimental approaches, we demonstrate the potential of Wi-A and Wi-AREAL as natural inhibitors of Survivin, which may be helpful in cancer treatment.
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Affiliation(s)
- Renu Wadhwa
- AIST-INDIA DAILAB, National Institute of Advanced Industrial Science & Technology (AIST), Central 4-1, Tsukuba 305-8565, Japan
| | - Jia Wang
- AIST-INDIA DAILAB, National Institute of Advanced Industrial Science & Technology (AIST), Central 4-1, Tsukuba 305-8565, Japan
| | - Seyad Shefrin
- Department of Biochemical Engineering & Biotechnology, Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi 110-016, India
| | - Huayue Zhang
- AIST-INDIA DAILAB, National Institute of Advanced Industrial Science & Technology (AIST), Central 4-1, Tsukuba 305-8565, Japan
| | - Durai Sundar
- Department of Biochemical Engineering & Biotechnology, Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi 110-016, India
- Institute of Bioinformatics and Applied Biotechnology (IBAB), Bengaluru 560-100, India
| | - Sunil C Kaul
- AIST-INDIA DAILAB, National Institute of Advanced Industrial Science & Technology (AIST), Central 4-1, Tsukuba 305-8565, Japan
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Wadhwa R, Yang S, Meidinna HN, Sari AN, Bhargava P, Kaul SC. Mixtures of Three Mortaparibs with Enhanced Anticancer, Anti-Migration, and Antistress Activities: Molecular Characterization in p53-Null Cancer Cells. Cancers (Basel) 2024; 16:2239. [PMID: 38927944 PMCID: PMC11202144 DOI: 10.3390/cancers16122239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 06/07/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
Mortalin, a member of the Hsp70 family of proteins, is commonly enriched in many types of cancers. It promotes carcinogenesis and metastasis in multiple ways of which the inactivation of the tumor suppressor activity of p53 has been firmly established. The downregulation of mortalin and/or disruption of mortalin-p53 interactions by small molecules has earlier been shown to activate p53 function yielding growth arrest/apoptosis in cancer cells. Mortaparibs (Mortaparib, MortaparibPlus, and MortaparibMild) are chemical inhibitors of mortalin isolated by cell-based two-way screening involving (i) a shift in the mortalin staining pattern from perinuclear (characteristics of cancer cells) to pancytoplasmic (characteristics of normal cells) and (ii) the nuclear enrichment of p53. They have similar structures and also cause the inhibition of PARP1 and hence were named Mortaparibs. In the present study, we report the anticancer and anti-metastasis activity of MortaparibMild (4-[(4-amino-5-thiophen-2-yl-1,2,4-triazol-3-yl)sulfanylmethyl]-N-(4-methoxyphenyl)-1,3-thiazol-2-amine) in p53-null cells. By extensive molecular analyses of cell proliferation, growth arrest, and apoptosis pathways, we demonstrate that although it causes relatively weaker cytotoxicity compared to Mortaparib and MortaparibPlus, its lower concentrations were equally potent to inhibit cell migration. We developed combinations (called MortaparibMix-AP, MortaparibMix-AM, and MortaparibMix-AS) consisting of different ratios of three Mortaparibs for specifically enhancing their anti-proliferation, anti-migration, and antistress activities, respectively. Based on the molecular analyses of control and treated cells, we suggest that the three Mortaparibs and their mixtures may be considered for further laboratory and clinical studies validating their use for the treatment of cancer as well as prevention of its relapse and metastasis.
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Affiliation(s)
| | | | | | | | | | - Sunil C. Kaul
- AIST-INDIA DAILAB, National Institute of Advanced Industrial Science & Technology (AIST), Central 4-1, Tsukuba 305-8565, Japan
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Yoon AR, Wadhwa R, Kaul SC, Yun CO. Why is Mortalin a Potential Therapeutic Target for Cancer? Front Cell Dev Biol 2022; 10:914540. [PMID: 35859897 PMCID: PMC9290191 DOI: 10.3389/fcell.2022.914540] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 05/20/2022] [Indexed: 11/13/2022] Open
Abstract
Cancer is one of the leading causes of death worldwide, accounting for nearly 10 million deaths in 2020. Therefore, cancer therapy is a priority research field to explore the biology of the disease and identify novel targets for the development of better treatment strategies. Mortalin is a member of the heat shock 70 kDa protein family. It is enriched in several types of cancer and contributes to carcinogenesis in various ways, including inactivation of the tumor suppressor p53, deregulation of apoptosis, induction of epithelial–mesenchymal transition, and enhancement of cancer stemness. It has been studied extensively as a therapeutic target for cancer treatment, and several types of anti-mortalin molecules have been discovered that effectively suppress the tumor cell growth. In this review, we 1) provide a comprehensive sketch of the role of mortalin in tumor biology; 2) discuss various anti-mortalin molecules, including natural compounds, synthetic small molecules, peptides, antibodies, and nucleic acids, that have shown potential for cancer treatment in laboratory studies; and 3) provide future perspectives in cancer treatment.
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Affiliation(s)
- A-Rum Yoon
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul, South Korea
- Institute of Nano Science and Technology (INST), Hanyang University, Seoul, South Korea
- Hanyang Institute of Bioscience and Biotechnology (HY-IBB), Hanyang University, Seoul, South Korea
| | - Renu Wadhwa
- AIST-INDIA DAILAB, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Sunil C Kaul
- AIST-INDIA DAILAB, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Chae-Ok Yun
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul, South Korea
- Institute of Nano Science and Technology (INST), Hanyang University, Seoul, South Korea
- Hanyang Institute of Bioscience and Biotechnology (HY-IBB), Hanyang University, Seoul, South Korea
- GeneMedicine CO, Ltd, Seoul, South Korea
- *Correspondence: Chae-Ok Yun,
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Sari AN, Elwakeel A, Dhanjal JK, Kumar V, Sundar D, Kaul SC, Wadhwa R. Identification and Characterization of Mortaparib Plus-A Novel Triazole Derivative That Targets Mortalin-p53 Interaction and Inhibits Cancer-Cell Proliferation by Wild-Type p53-Dependent and -Independent Mechanisms. Cancers (Basel) 2021; 13:cancers13040835. [PMID: 33671256 PMCID: PMC7921971 DOI: 10.3390/cancers13040835] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/04/2021] [Accepted: 02/10/2021] [Indexed: 12/24/2022] Open
Abstract
p53 has an essential role in suppressing the carcinogenesis process by inducing cell cycle arrest/apoptosis/senescence. Mortalin/GRP75 is a member of the Hsp70 protein family that binds to p53 causing its sequestration in the cell cytoplasm. Hence, p53 cannot translocate to the nucleus to execute its canonical tumour suppression function as a transcription factor. Abrogation of mortalin-p53 interaction and subsequent reactivation of p53's tumour suppression function has been anticipated as a possible approach in developing a novel cancer therapeutic drug candidate. A chemical library was screened in a high-content screening system to identify potential mortalin-p53 interaction disruptors. By four rounds of visual assays for mortalin and p53, we identified a novel synthetic small-molecule triazole derivative (4-[(1E)-2-(2-phenylindol-3-yl)-1-azavinyl]-1,2,4-triazole, henceforth named MortaparibPlus). Its activities were validated using multiple bioinformatics and experimental approaches in colorectal cancer cells possessing either wild-type (HCT116) or mutant (DLD-1) p53. Bioinformatics and computational analyses predicted the ability of MortaparibPlus to competitively prevent the interaction of mortalin with p53 as it interacted with the p53 binding site of mortalin. Immunoprecipitation analyses demonstrated the abrogation of mortalin-p53 complex formation in MortaparibPlus-treated cells that showed growth arrest and apoptosis mediated by activation of p21WAF1, or BAX and PUMA signalling, respectively. Furthermore, we demonstrate that MortaparibPlus-induced cytotoxicity to cancer cells is mediated by multiple mechanisms that included the inhibition of PARP1, up-regulation of p73, and also the down-regulation of mortalin and CARF proteins that play critical roles in carcinogenesis. MortaparibPlus is a novel multimodal candidate anticancer drug that warrants further experimental and clinical attention.
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Affiliation(s)
- Anissa Nofita Sari
- AIST-INDIA DAILAB, National Institute of Advanced Industrial Science & Technology (AIST), Central 5-41, Tsukuba 305-8565, Japan; (A.N.S.); (A.E.); (J.K.D.)
- School of Integrative & Global Majors (SIGMA), University of Tsukuba, Tsukuba 305-8577, Japan
| | - Ahmed Elwakeel
- AIST-INDIA DAILAB, National Institute of Advanced Industrial Science & Technology (AIST), Central 5-41, Tsukuba 305-8565, Japan; (A.N.S.); (A.E.); (J.K.D.)
- School of Integrative & Global Majors (SIGMA), University of Tsukuba, Tsukuba 305-8577, Japan
| | - Jaspreet Kaur Dhanjal
- AIST-INDIA DAILAB, National Institute of Advanced Industrial Science & Technology (AIST), Central 5-41, Tsukuba 305-8565, Japan; (A.N.S.); (A.E.); (J.K.D.)
| | - Vipul Kumar
- DAILAB, Department of Biochemical Engineering & Biotechnology, Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi 110-016, India; (V.K.); (D.S.)
| | - Durai Sundar
- DAILAB, Department of Biochemical Engineering & Biotechnology, Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi 110-016, India; (V.K.); (D.S.)
| | - Sunil C. Kaul
- AIST-INDIA DAILAB, National Institute of Advanced Industrial Science & Technology (AIST), Central 5-41, Tsukuba 305-8565, Japan; (A.N.S.); (A.E.); (J.K.D.)
- Correspondence: (S.C.K.); (R.W.)
| | - Renu Wadhwa
- AIST-INDIA DAILAB, National Institute of Advanced Industrial Science & Technology (AIST), Central 5-41, Tsukuba 305-8565, Japan; (A.N.S.); (A.E.); (J.K.D.)
- School of Integrative & Global Majors (SIGMA), University of Tsukuba, Tsukuba 305-8577, Japan
- Correspondence: (S.C.K.); (R.W.)
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Wang J, Bhargava P, Yu Y, Sari AN, Zhang H, Ishii N, Yan K, Zhang Z, Ishida Y, Terao K, Kaul SC, Miyako E, Wadhwa R. Novel Caffeic Acid Phenethyl Ester-Mortalin Antibody Nanoparticles Offer Enhanced Selective Cytotoxicity to Cancer Cells. Cancers (Basel) 2020; 12:cancers12092370. [PMID: 32825706 PMCID: PMC7564736 DOI: 10.3390/cancers12092370] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/01/2020] [Accepted: 08/13/2020] [Indexed: 12/12/2022] Open
Abstract
Caffeic acid phenethyl ester (CAPE) is a key bioactive ingredient of honeybee propolis and is claimed to have anticancer activity. Since mortalin, a hsp70 chaperone, is enriched in a cancerous cell surface, we recruited a unique cell internalizing anti-mortalin antibody (MotAb) to generate mortalin-targeting CAPE nanoparticles (CAPE-MotAb). Biophysical and biomolecular analyses revealed enhanced anticancer activity of CAPE-MotAb both in in vitro and in vivo assays. We demonstrate that CAPE-MotAb cause a stronger dose-dependent growth arrest/apoptosis of cancer cells through the downregulation of Cyclin D1-CDK4, phospho-Rb, PARP-1, and anti-apoptotic protein Bcl2. Concomitantly, a significant increase in the expression of p53, p21WAF1, and caspase cleavage was obtained only in CAPE-MotAb treated cells. We also demonstrate that CAPE-MotAb caused a remarkably enhanced downregulation of proteins critically involved in cell migration. In vivo tumor growth assays for subcutaneous xenografts in nude mice also revealed a significantly enhanced suppression of tumor growth in the treated group suggesting that these novel CAPE-MotAb nanoparticles may serve as a potent anticancer nanomedicine.
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Affiliation(s)
- Jia Wang
- AIST-INDIA DAILAB, DBT-AIST International Center for Translational & Environmental Research (DAICENTER), National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan; (J.W.); (P.B.); (Y.Y.); (A.N.S.); (H.Z.); (N.I.); (K.Y.); (S.C.K.)
- Graduate School of Life & Environmental Sciences, University of Tsukuba, Ibaraki 305-8575, Japan;
| | - Priyanshu Bhargava
- AIST-INDIA DAILAB, DBT-AIST International Center for Translational & Environmental Research (DAICENTER), National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan; (J.W.); (P.B.); (Y.Y.); (A.N.S.); (H.Z.); (N.I.); (K.Y.); (S.C.K.)
| | - Yue Yu
- AIST-INDIA DAILAB, DBT-AIST International Center for Translational & Environmental Research (DAICENTER), National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan; (J.W.); (P.B.); (Y.Y.); (A.N.S.); (H.Z.); (N.I.); (K.Y.); (S.C.K.)
- Biomedical Research Institute (BMRI), National Institute of Advanced Industrial Science & Technology (AIST), Ikeda 563-8577, Japan
| | - Anissa Nofita Sari
- AIST-INDIA DAILAB, DBT-AIST International Center for Translational & Environmental Research (DAICENTER), National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan; (J.W.); (P.B.); (Y.Y.); (A.N.S.); (H.Z.); (N.I.); (K.Y.); (S.C.K.)
| | - Huayue Zhang
- AIST-INDIA DAILAB, DBT-AIST International Center for Translational & Environmental Research (DAICENTER), National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan; (J.W.); (P.B.); (Y.Y.); (A.N.S.); (H.Z.); (N.I.); (K.Y.); (S.C.K.)
| | - Noriyuki Ishii
- AIST-INDIA DAILAB, DBT-AIST International Center for Translational & Environmental Research (DAICENTER), National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan; (J.W.); (P.B.); (Y.Y.); (A.N.S.); (H.Z.); (N.I.); (K.Y.); (S.C.K.)
| | - Kangmin Yan
- AIST-INDIA DAILAB, DBT-AIST International Center for Translational & Environmental Research (DAICENTER), National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan; (J.W.); (P.B.); (Y.Y.); (A.N.S.); (H.Z.); (N.I.); (K.Y.); (S.C.K.)
| | - Zhenya Zhang
- Graduate School of Life & Environmental Sciences, University of Tsukuba, Ibaraki 305-8575, Japan;
| | - Yoshiyuki Ishida
- CycloChem Co., Ltd., 7-4-5 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan; (Y.I.); (K.T.)
| | - Keiji Terao
- CycloChem Co., Ltd., 7-4-5 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan; (Y.I.); (K.T.)
| | - Sunil C. Kaul
- AIST-INDIA DAILAB, DBT-AIST International Center for Translational & Environmental Research (DAICENTER), National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan; (J.W.); (P.B.); (Y.Y.); (A.N.S.); (H.Z.); (N.I.); (K.Y.); (S.C.K.)
- KAUL-Tech Co. Ltd., 3-24 Nagakunidai, Tsuchiura City, Ibaraki 300-0810, Japan
| | - Eijiro Miyako
- School of Materials Science, Japan Advanced Institute of Science & Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan;
| | - Renu Wadhwa
- AIST-INDIA DAILAB, DBT-AIST International Center for Translational & Environmental Research (DAICENTER), National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan; (J.W.); (P.B.); (Y.Y.); (A.N.S.); (H.Z.); (N.I.); (K.Y.); (S.C.K.)
- Correspondence: ; Tel.: +81-29-8-61-9464
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Garg S, Wu C, Ohmiya Y, Kaul SC, Wadhwa R. Express ELISA for detection of mortalin. Biotechniques 2019; 67:166-171. [PMID: 31502469 DOI: 10.2144/btn-2018-0158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Mortalin is a widely studied stress chaperone that plays a significant role in diseases such as cancer, diabetes mellitus, liver cirrhosis, neurodegeneration and generalized aging. Based on these, the level of mortalin expression has been predicted to be an important and valuable diagnostic and prognostic marker. Conventional methods of protein analyses, such as Western blotting, immunohistochemistry or ELISA with antibodies provide specific, sensitive and useful outcomes. However, they are limited by lengthy and time-consuming protocols. Here, we present an upgrade to the existing ELISA techniques. We have prepared a conjugate of anti-mortalin antibody and luciferase enzyme that can be recruited for rapid (∼3 h) and quantitative detection of mortalin expression in a given biological sample.
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Affiliation(s)
- Sukant Garg
- DAILAB, DBT-AIST International Center for Translational & Environmental Research (DAICENTER), National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba 305-8565, Japan.,School of Integrative & Global Majors, University of Tsukuba, Tsukuba 305-8577, Japan
| | - Chun Wu
- DAILAB, DBT-AIST International Center for Translational & Environmental Research (DAICENTER), National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba 305-8565, Japan
| | - Yoshihiro Ohmiya
- DAILAB, DBT-AIST International Center for Translational & Environmental Research (DAICENTER), National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba 305-8565, Japan
| | - Sunil C Kaul
- DAILAB, DBT-AIST International Center for Translational & Environmental Research (DAICENTER), National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba 305-8565, Japan
| | - Renu Wadhwa
- DAILAB, DBT-AIST International Center for Translational & Environmental Research (DAICENTER), National Institute of Advanced Industrial Science & Technology (AIST), Tsukuba 305-8565, Japan.,School of Integrative & Global Majors, University of Tsukuba, Tsukuba 305-8577, Japan
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Pietilä M, Lehenkari P, Kuvaja P, Kaakinen M, Kaul SC, Wadhwa R, Uemura T. Mortalin antibody-conjugated quantum dot transfer from human mesenchymal stromal cells to breast cancer cells requires cell-cell interaction. Exp Cell Res 2013; 319:2770-80. [PMID: 23928292 DOI: 10.1016/j.yexcr.2013.07.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 07/23/2013] [Indexed: 12/19/2022]
Abstract
The role of tumor stroma in regulation of breast cancer growth has been widely studied. However, the details on the type of heterocellular cross-talk between stromal and breast cancer cells (BCCs) are still poorly known. In the present study, in order to investigate the intercellular communication between human mesenchymal stromal cells (hMSCs) and breast cancer cells (BCCs, MDA-MB-231), we recruited cell-internalizing quantum dots (i-QD) generated by conjugation of cell-internalizing anti-mortalin antibody and quantum dots (QD). Co-culture of illuminated and color-coded hMSCs (QD655) and BCCs (QD585) revealed the intercellular transfer of QD655 signal from hMSCs to BCCs. The amount of QD double positive BCCs increased gradually within 48h of co-culture. We found prominent intercellular transfer of QD655 in hanging drop co-culture system and it was non-existent when hMSCs and BBCs cells were co-cultured in trans-well system lacking imminent cell-cell contact. Fluorescent and electron microscope analyses also supported that the direct cell-to-cell interactions may be required for the intercellular transfer of QD655 from hMSCs to BCCs. To the best of our knowledge, the study provides a first demonstration of transcellular crosstalk between stromal cells and BCCs that involve direct contact and may also include a transfer of mortalin, an anti-apoptotic and growth-promoting factor enriched in cancer cells.
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Affiliation(s)
- Mika Pietilä
- National Institute of Advanced industrial Sciences and Technology, Tsukuba, Ibaraki 305 8562, Japan
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Yoo JY, Ryu J, Gao R, Yaguchi T, Kaul SC, Wadhwa R, Yun CO. Tumor suppression by apoptotic and anti-angiogenic effects of mortalin-targeting adeno-oncolytic virus. J Gene Med 2010; 12:586-95. [PMID: 20603860 DOI: 10.1002/jgm.1471] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Adeno-oncolytic (Adon) viruses offer an effective cancer therapeutic tool with several advantages, including wide host cell permeability, high transduction efficiency, safety, tumor selectivity, non-invasiveness, high genetic modifiability and high level of expression of the integrated transgenes. Armed Adon viruses in which the therapeutic efficacy of virus is enhanced by their coupling with cytotoxic, anti-angiogenic or anti-vascular gene products have gained importance because they engage additional mechanisms for tumor cell killing. In the present study, we selected mortalin, a stress chaperone that is tightly involved in human carcinogenesis, constructed a mortalin-targeting Adon (mot-Adon) virus and examined its therapeutic potential both in vitro and in vivo. METHODS Mortalin-targeting plasmid and viral vectors that harbored mortalin-specific small interfering RNA sequences were constructed. The therapeutic value of these vectors was investigated in vitro and in vivo by cell culture and nude mice tumor models. RESULTS We demonstrate that the mot-Adon virus has selective cytotoxicity for human cancer cells in vitro. Retrovirus-mediated overexpression of mortalin protected the cells against mot-Adon virus, confirming that mortalin silencing was the real cause of cancer cell death. Although mortalin overexpression enhanced malignant properties of cancer cells in breast xenograft models, mot-Adon virus elicited an enhanced anti-tumor effect. Immunohistochemical examination of the tumors showed that the mot-Adon virus caused enhanced apoptosis (mediated by reactivation of p53) and suppression of microvessel formation. CONCLUSIONS Mortalin is up-regulated in a large variety of tumors and hence mot-Adon virus is proposed as a candidate cancer therapeutic agent.
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Affiliation(s)
- Ji Young Yoo
- Brain Korea 21 Project for Medical Sciences, Institute for Cancer Research, Yonsei University College of Medicine, Seoul, Korea
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Kelly CV, Liroff MG, Triplett LD, Leroueil PR, Mullen DG, Wallace JM, Meshinchi S, Baker JR, Orr BG, Banaszak Holl MM. Stoichiometry and Structure of Poly(amidoamine) Dendrimer-Lipid Complexes. ACS NANO 2009; 3:1886-1896. [PMID: 19534489 PMCID: PMC2888816 DOI: 10.1021/nn900173e] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The energetics, stoichiometry, and structure of poly(amidoamine) (PAMAM) dendrimer-phospholipid interactions were measured with isothermal titration calorimetry (ITC), transmission electron microscopy (TEM), atomic force microscopy (AFM), dynamic light scattering (DLS), and molecular dynamics (MD) simulations. Dendrimers of sixth-generation and smaller interacted with the lipids at an average stoichiometry and enthalpy proportional to the number of primary amines per dendrimers (4.5 ± 0.1 lipids/primary amine and 6.3 ± 0.3 kJ/mol of primary amines, respectively). Larger dendrimers, however, demonstrated a decreased number of bound lipids and heat release per primary amine, presumably due to the steric restriction of dendrimer deformation on the lipid bilayer. For example, eighth-generation PAMAM dendrimers bound to 44% fewer lipids per primary amine and released 63% less heat per primary amine as compared to the smaller dendrimers. These differences in binding stoichiometry support generation-dependent models for dendrimer-lipid complexation, which are consistent with previously observed generation-dependent differences in dendrimer-induced membrane disruption. Dendrimers of seventh-generation and larger bound to lipids with an average stoichiometry consistent with each dendrimer having been wrapped by a bilayer of lipids, whereas smaller dendrimers did not.
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Ohyabu Y, Kaul Z, Yoshioka T, Inoue K, Sakai S, Mishima H, Uemura T, Kaul SC, Wadhwa R. Stable and nondisruptive in vitro/in vivo labeling of mesenchymal stem cells by internalizing quantum dots. Hum Gene Ther 2009; 20:217-24. [PMID: 19257853 DOI: 10.1089/hum.2008.100] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Progress in stem cell research has prioritized the refinement of cell-labeling techniques for in vitro and in vivo basic and therapeutic studies. Although quantum dots, because of their optical properties, are emerging as favorable nanoparticles for bioimaging, substantial refinements or modifications that would improve their biocompatibility are still required. We report here that internalizing quantum dots (i-QDs) generated by their conjugation with an internalizing antibody against a heat shock protein-70 family stress chaperone, mortalin, offered an efficient, genetically noninvasive, nontoxic, and functionally inert way to label mesenchymal stem cells (MSCs). The i-QD-labeled MSCs underwent normal adipocyte, osteocyte, and chondrocyte differentiation in vitro and in vivo, suggesting the potential application of i-QDs in in vivo diagnostics, regenerative and therapeutic medicine.
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Affiliation(s)
- Yoshimi Ohyabu
- National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan
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Kim SH, Jeong JH, Ou M, Yockman JW, Kim SW, Bull DA. Cardiomyocyte-targeted siRNA delivery by prostaglandin E(2)-Fas siRNA polyplexes formulated with reducible poly(amido amine) for preventing cardiomyocyte apoptosis. Biomaterials 2008; 29:4439-46. [PMID: 18725170 DOI: 10.1016/j.biomaterials.2008.07.047] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2008] [Accepted: 07/28/2008] [Indexed: 11/15/2022]
Abstract
A cardiomyocyte-targeted Fas siRNA delivery system was developed using prostaglandin E(2) (PGE(2))-modified siRNA polyplexes formed by a reducible poly(amido amine) to inhibit cardiomyocyte apoptosis. PGE(2), which was used as a specific ligand for cardiomyocyte targeting, was conjugated to the terminal-end of the sense siRNA (PGE(2)-siRNA). The reducible cationic copolymer, synthesized via Michael-type polyaddition of 1,6-diaminohexane and cystamine bis-acrylamide (poly(DAH/CBA)), tightly condensed the PGE(2)-siRNA conjugate to form nanosize polyplexes having a diameter of 100-150 nm. The PGE(2)-siRNA/poly(DAH/CBA) polyplexes decomplexed to release PGE(2)-siRNA in a cytosolic reducing environment due to the degradation of the reducible poly(DAH/CBA). The cellular uptake of the PGE(2)-siRNA/poly(DAH/CBA) polyplex was increased in rat cardiomyocytes (H9C2 cells) due to PGE(2) receptor-mediated endocytosis. When H9C2 cells were transfected with siRNA against Fas, a key regulator of ischemia-induced apoptosis, the PGE(2)-Fas siRNA/poly(DAH/CBA) polyplex delivery system led to a significant increase in Fas gene silencing, resulting in inhibition of cardiomyocyte apoptosis. The PGE(2)-Fas siRNA/poly(DAH/CBA) polyplex did not induce interferon-alpha in peripheral blood mononuclear cells. These results suggest that the PGE(2)-Fas siRNA/poly(DAH/CBA) polyplex formulation may be clinically applicable as a cardiomyocyte-targeted Fas siRNA delivery system to inhibit apoptosis in cardiovascular disease.
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Affiliation(s)
- Sun Hwa Kim
- Center for Controlled Chemical Delivery, Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT 84112, USA
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