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Zhang S, Tamura A, Yui N. Enhanced Tumor Targeting and Antitumor Activity of Methylated β-Cyclodextrin-Threaded Polyrotaxanes by Conjugating Cyclic RGD Peptides. Biomolecules 2024; 14:223. [PMID: 38397461 PMCID: PMC10886891 DOI: 10.3390/biom14020223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/09/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024] Open
Abstract
We previously reported that acid-degradable methylated β-cyclodextrins (Me-β-CDs)-threaded polyrotaxanes (Me-PRXs) can induce autophagic cell death through endoplasmic reticulum (ER) stress-related autophagy, even in apoptosis-resistant cells. Hence, Me-PRXs show great potential as anticancer therapeutics. In this study, peptide-supermolecule conjugates were designed to achieve the targeted delivery of Me-PRX to malignant tumors. Arg-Gly-Asp peptides are well-known binding motifs of integrin αvβ3, which is overexpressed on angiogenic sites and many malignant tumors. The tumor-targeted cyclic Arg-Gly-Asp (cRGD) peptide was orthogonally post-modified to Me-PRX via click chemistry. Surface plasmon resonance (SPR) results indicated that cRGD-Me-PRX strongly binds to integrin αvβ3, whereas non-targeted cyclic Arg-Ala-Glu (cRGE) peptide conjugated to Me-PRX (cRGE-Me-PRX) failed to interact with integrins αvβ3. In vitro, cRGD-Me-PRX demonstrated enhanced cellular internalization and antitumor activity in 4T1 cells than that of unmodified Me-PRX and non-targeted cRGE-Me-PRX, due to its ability to recognize integrin αvβ3. Furthermore, cRGD-Me-PRX accumulated effectively in tumors, leading to antitumor effects, and exhibited excellent biocompatibility and safety in vivo. Therefore, cRGD conjugation to enhance selectivity for integrin αvβ3-positive cancer cells is a promising design strategy for Me-PRXs in antitumor therapy.
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Affiliation(s)
| | - Atsushi Tamura
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062, Japan
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Manohar S, Ding D, Jiang H, Li L, Chen GD, Kador P, Salvi R. Combined antioxidants and anti-inflammatory therapies fail to attenuate the early and late phases of cyclodextrin-induced cochlear damage and hearing loss. Hear Res 2021; 414:108409. [PMID: 34953289 DOI: 10.1016/j.heares.2021.108409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 09/08/2021] [Accepted: 12/06/2021] [Indexed: 11/04/2022]
Abstract
Niemann-Pick C1 (NPC1) is a fatal neurodegenerative disease caused by aberrant cholesterol metabolism. The progression of the disease can be slowed by removing excess cholesterol with high-doses of 2-hyroxypropyl-beta-cyclodextrin (HPβCD). Unfortunately, HPβCD causes hearing loss; the initial first phase involves a rapid destruction of outer hair cells (OHCs) while the second phase, occurring 4-6 weeks later, involves the destruction of inner hair cells (IHCs), pillar cells, collapse of the organ of Corti and spiral ganglion neuron degeneration. To determine whether the first and/or second phase of HPβCD-induced cochlear damage is linked, in part, to excess oxidative stress or neuroinflammation, rats were treated with a single-dose of 3000 mg/kg HPβCD alone or together with one of two combination therapies. Each combination therapy was administered from 2-days before to 6-weeks after the HPβCD treatment. Combination 1 consisted of minocycline, an antibiotic that suppresses neuroinflammation, and HK-2, a multifunctional redox modulator that suppresses oxidative stress. Combination 2 was comprised of minocycline plus N-acetyl cysteine (NAC), which upregulates glutathione, a potent antioxidant. To determine if either combination therapy could prevent HPβCD-induced hearing impairment and cochlear damage, distortion product otoacoustic emissions (DPOAE) were measured to assess OHC function and the cochlear compound action potential (CAP) was measured to assess the function of IHCs and auditory nerve fibers. Cochleograms were prepared to quantify the amount of OHC, IHC and pillar cell (PC) loss. HPβCD significantly reduced DPOAE and CAP amplitudes and caused significant OHC, IHC and OPC losses with losses greater in the high-frequency base of the cochlea than the apex. Neither minocycline + HK-2 (MIN+ HK-2) nor minocycline + NAC (MIN+NAC) prevented the loss of DPOAEs, CAPs, OHCs, IHCs or IPCs caused by HPβCD. These results suggest that oxidative stress and neuroinflammation are unlikely to play major roles in mediating the first or second phase of HPβCD-induced cochlear damage. Thus, HPβCD-induced ototoxicity must be mediated by some other unknown cell-death pathway possibly involving loss of trophic support from damaged support cells or disrupted cholesterol metabolism.
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Affiliation(s)
- Senthilvelan Manohar
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, 14214, USA; Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Therapeutic Vision, Inc., Elkhorn, NE, 68022, USA
| | - Dalian Ding
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, 14214, USA; Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Therapeutic Vision, Inc., Elkhorn, NE, 68022, USA
| | - Haiyan Jiang
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, 14214, USA; Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Therapeutic Vision, Inc., Elkhorn, NE, 68022, USA
| | - Li Li
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, 14214, USA; Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Therapeutic Vision, Inc., Elkhorn, NE, 68022, USA
| | - Guang-Di Chen
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, 14214, USA; Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Therapeutic Vision, Inc., Elkhorn, NE, 68022, USA
| | - Peter Kador
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Therapeutic Vision, Inc., Elkhorn, NE, 68022, USA
| | - Richard Salvi
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, 14214, USA; Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Therapeutic Vision, Inc., Elkhorn, NE, 68022, USA.
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Liu Y, Xiong W, Wang CW, Shi JP, Shi ZQ, Zhou JD. Resveratrol promotes skin wound healing by regulating the miR-212/CASP8 axis. J Transl Med 2021; 101:1363-1370. [PMID: 34234270 DOI: 10.1038/s41374-021-00621-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 11/09/2022] Open
Abstract
The wound-healing process is a natural response to burn injury. Resveratrol (RES) may have potential as a therapy for wound healing, but how and whether RES regulates skin repair remains poorly understood. Human epidermal keratinocyte (HaCaT) cells were treated with lipopolysaccharide (LPS), and a mouse skin wound-healing model was established. Cell viability and apoptosis were analyzed by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide or flow cytometry. Cell proliferation was assessed by cell viability and colony-formation analyses. Cell migration was tested by wound-healing analysis. The microRNA-212 (miR-212) and caspase-8 (CASP8) levels were determined by quantitative reverse transcription polymerase chain reaction and western blotting. The correlation between miR-212 and CASP8 was analyzed by dual-luciferase reporter analysis. Skin wound healing in mice was assessed by measuring the wound area and gap after hematoxylin-eosin (HE) staining. RES reduced the LPS-induced reduction in viability and apoptosis in HaCaT cells. miR-212 expression was reduced by LPS and increased by exposure to RES. RES promoted cell proliferation and migration after LPS treatment by increasing miR-212 levels. CASP8 was a target of miR-212. CASP8 silencing promoted cell proliferation and migration, which was reversed by miR-212 knockdown in LPS-treated HaCaT cells. RES promoted skin wound healing in mice, which was reduced by miR-212 knockdown. Thus, RES facilitates cell proliferation and migration in LPS-treated HaCaT cells and promotes skin wound-healing in a mouse model by regulating the miR-212/CASP8 axis.
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Affiliation(s)
- Yu Liu
- Postdoctoral Research Station of Clinical Medicine, The Third Xiangya Hospital, Central South University, Changsha, 410000, Hunan Province, P.R. China
- Department of Plastic Surgery, The Third Xiangya Hospital, Central South University, Changsha, 410000, Hunan Province, P.R. China
- Inner Mongolia Medical University, Hohhot, 010000, Inner Mongolia Autonomous Region, P.R. China
| | - Wu Xiong
- Department of Burn & Plastic Surgery, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, 410007, Hunan Province, P.R. China
| | - Chu-Wang Wang
- Department of Plastic Surgery, The Third Xiangya Hospital, Central South University, Changsha, 410000, Hunan Province, P.R. China
| | - Jian-Ping Shi
- Inner Mongolia Medical University, Hohhot, 010000, Inner Mongolia Autonomous Region, P.R. China
| | - Zhi-Qiang Shi
- Inner Mongolia Medical University, Hohhot, 010000, Inner Mongolia Autonomous Region, P.R. China
| | - Jian-Da Zhou
- Department of Plastic Surgery, The Third Xiangya Hospital, Central South University, Changsha, 410000, Hunan Province, P.R. China.
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Ding D, Jiang H, Manohar S, Liu X, Li L, Chen GD, Salvi R. Spatiotemporal Developmental Upregulation of Prestin Correlates With the Severity and Location of Cyclodextrin-Induced Outer Hair Cell Loss and Hearing Loss. Front Cell Dev Biol 2021; 9:643709. [PMID: 34109172 PMCID: PMC8181405 DOI: 10.3389/fcell.2021.643709] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 03/08/2021] [Indexed: 11/24/2022] Open
Abstract
2-Hyroxypropyl-beta-cyclodextrin (HPβCD) is being used to treat Niemann-Pick C1, a fatal neurodegenerative disease caused by abnormal cholesterol metabolism. HPβCD slows disease progression, but unfortunately causes severe, rapid onset hearing loss by destroying the outer hair cells (OHC). HPβCD-induced damage is believed to be related to the expression of prestin in OHCs. Because prestin is postnatally upregulated from the cochlear base toward the apex, we hypothesized that HPβCD ototoxicity would spread from the high-frequency base toward the low-frequency apex of the cochlea. Consistent with this hypothesis, cochlear hearing impairments and OHC loss rapidly spread from the high-frequency base toward the low-frequency apex of the cochlea when HPβCD administration shifted from postnatal day 3 (P3) to P28. HPβCD-induced histopathologies were initially confined to the OHCs, but between 4- and 6-weeks post-treatment, there was an unexpected, rapid and massive expansion of the lesion to include most inner hair cells (IHC), pillar cells (PC), peripheral auditory nerve fibers, and spiral ganglion neurons at location where OHCs were missing. The magnitude and spatial extent of HPβCD-induced OHC death was tightly correlated with the postnatal day when HPβCD was administered which coincided with the spatiotemporal upregulation of prestin in OHCs. A second, massive wave of degeneration involving IHCs, PC, auditory nerve fibers and spiral ganglion neurons abruptly emerged 4–6 weeks post-HPβCD treatment. This secondary wave of degeneration combined with the initial OHC loss results in a profound, irreversible hearing loss.
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Affiliation(s)
- Dalian Ding
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, United States
| | - Haiyan Jiang
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, United States
| | - Senthilvelan Manohar
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, United States
| | - Xiaopeng Liu
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, United States
| | - Li Li
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, United States
| | - Guang-Di Chen
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, United States
| | - Richard Salvi
- Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, United States
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Aktanova A, Abramova T, Pashkina E, Boeva O, Grishina L, Kovalenko E, Kozlov V. Assessment of the Biocompatibility of Cucurbiturils in Blood Cells. NANOMATERIALS 2021; 11:nano11061356. [PMID: 34063763 PMCID: PMC8223778 DOI: 10.3390/nano11061356] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 12/29/2022]
Abstract
Currently, cucurbiturils are being actively researched all over the world. Research is focused on the ways of improving the solubility and selectivity of cucurbiturils, increasing the stability of the complexes with other particles in various media and enhancing their ability to bind and release various substances. The most significant area of our research is the assessment of safety, studying the biological properties and synergistic effects of cucurbiturils during complexation with drugs. In this article, the hemocompatibility of erythrocytes and leukocytes with cucurbiturils was investigated. We demonstrated that cucurbiturils have no cytotoxic effect, even at high concentrations (1 mM) and do not affect the viability of PBMCs. However, cucurbiturils can increase the level of the early apoptosis of lymphocytes and cucurbit[7]uril enhances hemolysis in biologically relevant media. Despite this, cucurbiturils are fairly safe organic molecules in concentrations up to 0.3 mM. Thus, we believe that it will become possible to use polymer nanostructures as drug delivery systems in clinical practice, since cucurbiturils can be modified to improve pharmacological properties.
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Affiliation(s)
- Alina Aktanova
- Research Institute of Fundamental and Clinical Immunology, 6300099 Novosibirsk, Russia; (A.A.); (T.A.); (O.B.); (L.G.); (V.K.)
| | - Tatjana Abramova
- Research Institute of Fundamental and Clinical Immunology, 6300099 Novosibirsk, Russia; (A.A.); (T.A.); (O.B.); (L.G.); (V.K.)
| | - Ekaterina Pashkina
- Research Institute of Fundamental and Clinical Immunology, 6300099 Novosibirsk, Russia; (A.A.); (T.A.); (O.B.); (L.G.); (V.K.)
- Correspondence:
| | - Olga Boeva
- Research Institute of Fundamental and Clinical Immunology, 6300099 Novosibirsk, Russia; (A.A.); (T.A.); (O.B.); (L.G.); (V.K.)
- Department of Medicine, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Lyubov Grishina
- Research Institute of Fundamental and Clinical Immunology, 6300099 Novosibirsk, Russia; (A.A.); (T.A.); (O.B.); (L.G.); (V.K.)
| | - Ekaterina Kovalenko
- Nikolaev Institute of Inorganic Chemistry SB RAS, 630090 Novosibirsk, Russia;
| | - Vladimir Kozlov
- Research Institute of Fundamental and Clinical Immunology, 6300099 Novosibirsk, Russia; (A.A.); (T.A.); (O.B.); (L.G.); (V.K.)
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Ding D, Manohar S, Jiang H, Salvi R. Hydroxypropyl-β-cyclodextrin causes massive damage to the developing auditory and vestibular system. Hear Res 2020; 396:108073. [PMID: 32956992 DOI: 10.1016/j.heares.2020.108073] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 07/03/2020] [Accepted: 08/25/2020] [Indexed: 12/14/2022]
Abstract
2-hydroxypropyl-β-cyclodextrin (HPβCD), a cholesterol chelator used to treat Niemann-Pick C1 (NPC1) lysosomal storage disease, causes hearing loss in mammals by preferentially destroying outer hair cells. Because cholesterol plays an important role in early neural development, we hypothesized that HPβCD would cause more extensive damage to postnatal cochlear and vestibular structures in than adult rats. This hypothesis was tested by administering HPβCD to adult rats and postnatal day 3 (P3) cochlear and vestibular organ cultures. Adult rats treated with HPβCD developed hearing impairment and outer hair cell loss 3-day post-treatment; damage increased with dose from the high frequency base toward the low-frequency apex. The HPβCD-induced histopathologies were more severe and widespread in cochlear and vestibular cultures at P3 than in adults. HPβCD destroyed both outer and inner hair cells, auditory nerve fibers and spiral ganglion neurons as well as type I and type II vestibular hair cells and vestibular ganglion neurons. The early stage of HPβCD damage involved disruption of hair cell mechanotransduction and destruction of stereocilia. HPβCD-mediated apoptosis in P3 cultures was most-strongly initiated by activation of the extrinsic caspase-8 cell death pathway in cochlear and vestibular hair cells and neurons followed by activation of executioner caspase-3. Thus, HPβCD is toxic to all types of postnatal cochlear and vestibular hair cells and neurons in vitro whereas in vivo it only appears to destroy outer hair cells in adult cochleae. The more severe HPβCD-induced damage in postnatal cultures could be due to greater drug bioavailability in vitro and/or greater vulnerability of the developing inner ear.
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Affiliation(s)
- Dalian Ding
- Center for Hearing and Deafness, University at Buffalo, 137 Cary Hall, Buffalo, NY 14214, United States
| | - Senthilvelan Manohar
- Center for Hearing and Deafness, University at Buffalo, 137 Cary Hall, Buffalo, NY 14214, United States
| | - Haiyan Jiang
- Center for Hearing and Deafness, University at Buffalo, 137 Cary Hall, Buffalo, NY 14214, United States
| | - Richard Salvi
- Center for Hearing and Deafness, University at Buffalo, 137 Cary Hall, Buffalo, NY 14214, United States.
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Fink S, Reddersen K, Wiegand C, Elsner P, Hipler UC. Evaluation of cell and hemocompatibility of Cucurbiturils. Eur J Pharm Sci 2020; 146:105271. [PMID: 32084586 DOI: 10.1016/j.ejps.2020.105271] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 02/06/2020] [Accepted: 02/16/2020] [Indexed: 01/16/2023]
Abstract
BACKGROUND Cucurbiturils (CB) are pumpkin-shaped macrocyclic molecules consisting of methylen-bridged glycoluril units. Because of their complexing characteristics, they can be used as drug containers for medical purposes. For future biomedical and dermal application of CB, the investigation of cell compatibility is essential. Little is known about the influence of CB on eukaryotic cells, especially on dermal keratinocytes. The structurally related cyclodextrins are known to induce cell death by apoptosis in HaCaT keratinocytes as well as hemolysis in erythrocytes. OBJECTIVE To examine cytotoxic effects of different CB. METHODS Different cytotoxicity tests were performed on HaCaT keratinocytes and erythrocytes incubated with CB[5], CB[6], and CB[7]. RESULTS CB[5] and CB[6] did not lead to cytotoxic reactions at high concentrations up to 30 mg/mL whereas incubation with CB[7] triggered apoptosis at a concentration of 3.75 mg/mL. None of the investigated CB caused hemolytic effects on erythrocytes. CONCLUSION These results confirm the high potential of CB as host-complexes for biomedical and dermal applications.
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Affiliation(s)
- Sarah Fink
- Department of Dermatology, Jena University Hospital, Jena, Germany.
| | | | - Cornelia Wiegand
- Department of Dermatology, Jena University Hospital, Jena, Germany
| | - Peter Elsner
- Department of Dermatology, Jena University Hospital, Jena, Germany
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Zhang D, Wang A, Feng J, Zhang Q, Liu L, Ren H. Ginsenoside Rg5 induces apoptosis in human esophageal cancer cells through the phosphoinositide‑3 kinase/protein kinase B signaling pathway. Mol Med Rep 2019; 19:4019-4026. [PMID: 30942438 PMCID: PMC6471319 DOI: 10.3892/mmr.2019.10093] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 09/28/2018] [Indexed: 12/03/2022] Open
Abstract
The role of ginsenoside in the prevention of cancer has been well established. Ginsenoside Rg5 is one of the main components isolated from red ginseng, which has been demonstrated to have anti-tumor effects by inhibiting cell proliferation and causing DNA damage. However, the role of ginsenoside Rg5 and its molecular mechanisms remain unclear in human esophageal cancer. In the present study, Rg5 was investigated as a novel drug for the chemotherapy of esophageal cancer in in vitro experiments. Esophageal cancer Eca109 cells were exposed to various concentrations of ginsenoside Rg5 (0–32 µΜ) for 24 h. Subsequent cell proliferation assays demonstrated that treatment with ginsenoside Rg5 resulted in the dose-dependent inhibition of proliferation, while a significant increase in apoptotic rate and increased activities of caspase-3, −8 and −9 were observed. In addition, the mitochondrial membrane potential was decreased and the cytoplasmic free calcium level increased following treatment with ginsenoside Rg5. Furthermore, the expression of B-cell lymphoma 2 and phosphorylated-protein kinase B (p-Akt) decreased. The specific phosphoinositide-3 kinase (PI3K) inhibitor LY294002 promoted this effect, while insulin-like growth factor-1, a specific PI3K activator, inhibited this action. Taken together, the results suggested that ginsenoside Rg5 may have a tumor-suppressive effect on esophageal cancer by promoting apoptosis and may be associated with the downregulation of the PI3K/Akt signaling pathway.
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Affiliation(s)
- Daoming Zhang
- Department of Radiotherapy, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Aifu Wang
- Department of Radiotherapy, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Jueping Feng
- Department of Oncology, Wuhan Puai Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430035, P.R. China
| | - Qi Zhang
- Department of Radiotherapy, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Linlin Liu
- Department of Radiotherapy, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
| | - Hui Ren
- Department of General Surgery, The China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130000, P.R. China
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Antifungal Actions of Glycinin Basic Peptide against Aspergillus niger through the Collaborative Damage to Cell Membrane and Mitochondria. FOOD BIOPHYS 2018. [DOI: 10.1007/s11483-018-9561-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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10
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Stamatikos A, Dronadula N, Ng P, Palmer D, Knight E, Wacker BK, Tang C, Kim F, Dichek DA. ABCA1 Overexpression in Endothelial Cells In Vitro Enhances ApoAI-Mediated Cholesterol Efflux and Decreases Inflammation. Hum Gene Ther 2018; 30:236-248. [PMID: 30079772 DOI: 10.1089/hum.2018.120] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Atherosclerosis, a disease of blood vessels, is driven by cholesterol accumulation and inflammation. Gene therapy that removes cholesterol from blood vessels and decreases inflammation is a promising approach for prevention and treatment of atherosclerosis. In previous work, we reported that helper-dependent adenoviral (HDAd) overexpression of apolipoprotein A-I (apoAI) in endothelial cells (ECs) increases cholesterol efflux in vitro and reduces atherosclerosis in vivo. However, the effect of HDAdApoAI on atherosclerosis is partial. To improve this therapy, we considered concurrent overexpression of ATP-binding cassette subfamily A, member 1 (ABCA1), a protein that is required for apoAI-mediated cholesterol efflux. Before attempting combined apoAI/ABCA1 gene therapy, we tested whether an HDAd that expresses ABCA1 (HDAdABCA1) increases EC cholesterol efflux, whether increased cholesterol efflux alters normal EC physiology, and whether ABCA1 overexpression in ECs has anti-inflammatory effects. HDAdABCA1 increased EC ABCA1 protein (∼3-fold; p < 0.001) and apoAI-mediated cholesterol efflux (2.3-fold; p = 0.007). Under basal culture conditions, ABCA1 overexpression did not alter EC proliferation, metabolism, migration, apoptosis, nitric oxide production, or inflammatory gene expression. However, in serum-starved, apoAI-treated EC, ABCA1 overexpression had anti-inflammatory effects: decreased inflammatory gene expression (∼50%; p ≤ 0.02 for interleukin [IL]-6, tumor necrosis factor [TNF]-α, and vascular cell adhesion protein-1); reduced lipid-raft Toll-like receptor 4 (80%; p = 0.001); and a trend towards increased nitric oxide production (∼55%; p = 0.1). In ECs stimulated with lipopolysaccharide, ABCA1 overexpression markedly decreased inflammatory gene expression (∼90% for IL-6 and TNF-α; p < 0.001). Therefore, EC ABCA1 overexpression has no toxic effects and counteracts the two key drivers of atherosclerosis: cholesterol accumulation and inflammation. In vivo testing of HDAdABCA1 is warranted.
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Affiliation(s)
- Alexis Stamatikos
- 1 Division of Cardiology, Department of Medicine, University of Washington, Seattle, Washington
| | - Nagadhara Dronadula
- 1 Division of Cardiology, Department of Medicine, University of Washington, Seattle, Washington
| | - Philip Ng
- 2 Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Donna Palmer
- 2 Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Ethan Knight
- 1 Division of Cardiology, Department of Medicine, University of Washington, Seattle, Washington
| | - Bradley K Wacker
- 1 Division of Cardiology, Department of Medicine, University of Washington, Seattle, Washington
| | - Chongren Tang
- 1 Division of Cardiology, Department of Medicine, University of Washington, Seattle, Washington
| | - Francis Kim
- 1 Division of Cardiology, Department of Medicine, University of Washington, Seattle, Washington
| | - David A Dichek
- 1 Division of Cardiology, Department of Medicine, University of Washington, Seattle, Washington
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11
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Nishida K, Tamura A, Yui N. ER stress-mediated autophagic cell death induction through methylated β-cyclodextrins-threaded acid-labile polyrotaxanes. J Control Release 2018; 275:20-31. [PMID: 29428200 DOI: 10.1016/j.jconrel.2018.02.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 01/26/2018] [Accepted: 02/06/2018] [Indexed: 12/11/2022]
Abstract
Autophagy plays a pivotal role in the development and prevention of numerous diseases, and the induction of autophagy is regarded as a potential therapeutic approach for intractable diseases. In this study, the induction of autophagy by methylated β-cyclodextrins (Me-β-CDs)-threaded acid-labile polyrotaxane (Me-PRX) that can release the threaded Me-β-CDs in response to acidic pH in lysosomes was investigated. We hypothesized that the Me-β-CDs released from the Me-PRX interact with the membrane of organelles and cause autophagy. The Me-PRX preferentially accumulated in endoplasmic reticulum (ER) and caused ER stress, which was confirmed by gene expression analysis and the expression of an ER stress-marker protein. Accompanying the ER stress, cells treated with Me-PRX showed autophagy, which was not observed in cells treated with non-labile Me-PRX, other chemically modified PRXs, or free Me-β-CD. Furthermore, the Me-PRX treatment induced autophagic cell death and caused cell death even in apoptosis-resistant cells. Overall, this study demonstrates that the acid-labile Me-PRX induces ER stress-mediated autophagic cell death, and the Me-PRX would be a promising candidate to induce effective cell death in apoptosis-resistant malignant tumors.
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Affiliation(s)
- Kei Nishida
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062, Japan
| | - Atsushi Tamura
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062, Japan.
| | - Nobuhiko Yui
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062, Japan
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Reddersen K, Finger S, Zieger M, Wiegand C, Buschmann HJ, Elsner P, Hipler UC. Cytocompatibility testing of cyclodextrin-functionalized antimicrobial textiles-a comprehensive approach. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:190. [PMID: 27844305 DOI: 10.1007/s10856-016-5804-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 10/27/2016] [Indexed: 06/06/2023]
Abstract
Functionalized textiles can be used in wound management to reduce the microbial burden in the wound area, to prevent wound infections, and to avoid cross-contamination between patients. In the present study, a comprehensive in vitro approach to enable the assessment of antibacterial activity of functionalized textiles and cytotoxicity of cyclodextrin (CD)-complexes with chlorhexidine diacetate (CHX), iodine (IOD), and polihexanide (PHMB) is suggested to evaluate their properties for supporting optimal conditions for wound healing. For all β-CD-antiseptic functionalized cotton samples a strong antibacterial effect on the Gram-positive bacteria Staphylococcus aureus and Staphylococcus epidermidis as well as on the Gram-negative bacteria Klebsiella pneumoniae and Escherichia coli was proven. In addition, β-CD-CHX and β-CD-PHMB were effective against the yeast Candida albicans. The growth of Pseudomonas aeruginosa could be reduced significantly by β-CD-IOD and β-CD-PHMB. The established comprehensive testing system for determination of biocompatibility on human HaCaT keratinocytes is suitable for obtaining robust data on cell viability, cytotoxicity and mode of cell death of the β-CD-antiseptic-complexes. The promising results of the high antimicrobial activity of these functionalized textiles show the high potential of such materials in medical applications.
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Affiliation(s)
| | - Susanne Finger
- Department of Dermatology, University Hospital Jena, Jena, Germany
| | - Michael Zieger
- Department of Dermatology, University Hospital Jena, Jena, Germany
| | - Cornelia Wiegand
- Department of Dermatology, University Hospital Jena, Jena, Germany
| | | | - Peter Elsner
- Department of Dermatology, University Hospital Jena, Jena, Germany
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Certal M, Vinhas A, Barros-Barbosa A, Ferreirinha F, Costa MA, Correia-de-Sá P. ADP-Induced Ca 2+ Signaling and Proliferation of Rat Ventricular Myofibroblasts Depend on Phospholipase C-Linked TRP Channels Activation Within Lipid Rafts. J Cell Physiol 2016; 232:1511-1526. [PMID: 27755650 DOI: 10.1002/jcp.25656] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 10/17/2016] [Indexed: 01/23/2023]
Abstract
Nucleotides released during heart injury affect myocardium electrophysiology and remodeling through P2 purinoceptors activation in cardiac myofibroblasts. ATP and UTP endorse [Ca2+ ]i accumulation and growth of DDR-2/α-SMA-expressing myofibroblasts from adult rat ventricles via P2Y4 and P2Y2 receptors activation, respectively. Ventricular myofibroblasts also express ADP-sensitive P2Y1 , P2Y12 , and P2Y13 receptors as demonstrated by immunofluorescence confocal microscopy and western blot analysis, but little information exists on ADP effects in these cells. ADP (0.003-3 mM) and its stable analogue, ADPßS (100 μM), caused fast [Ca2+ ]i transients originated from thapsigargin-sensitive internal stores, which partially declined to a plateau sustained by capacitative Ca2+ entry through transient receptor potential (TRP) channels inhibited by 2-APB (50 μM) and flufenamic acid (100 μM). Hydrophobic interactions between Gq/11 -coupled P2Y purinoceptors and TRP channels were suggested by prevention of the ADP-induced [Ca2+ ]i plateau following PIP2 depletion with LiCl (10 mM) and cholesterol removal from lipid rafts with methyl-ß-cyclodextrin (2 mM). ADP [Ca2+ ]i transients were insensitive to P2Y1 , P2Y12 , and P2Y13 receptor antagonists, MRS2179 (10μM), AR-C66096 (0.1 μM), and MRS2211 (10μM), respectively, but were attenuated by suramin and reactive blue-2 (100 μM) which also blocked P2Y4 receptors activation by UTP. Cardiac myofibroblasts growth and type I collagen production were favored upon activation of MRS2179-sensitive P2Y1 receptors with ADP or ADPßS (30 μM). In conclusion, ADP exerts a dual role on ventricular myofibroblasts: [Ca2+ ]i transients are mediated by fast-desensitizing P2Y4 receptors, whereas the pro-fibrotic effect of ADP involves the P2Y1 receptor activation. Data also show that ADP-induced capacitative Ca2+ influx depends on phospholipase C-linked TRP channels opening in lipid raft microdomains. J. Cell. Physiol. 232: 1511-1526, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Mariana Certal
- Laboratório de Farmacologia e Neurobiologia, Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), Porto, Portugal
| | - Adriana Vinhas
- Laboratório de Farmacologia e Neurobiologia, Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), Porto, Portugal
| | - Aurora Barros-Barbosa
- Laboratório de Farmacologia e Neurobiologia, Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), Porto, Portugal
| | - Fátima Ferreirinha
- Laboratório de Farmacologia e Neurobiologia, Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), Porto, Portugal
| | - Maria Adelina Costa
- Laboratório de Farmacologia e Neurobiologia, Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), Porto, Portugal.,Departamento de Química, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), Porto, Portugal
| | - Paulo Correia-de-Sá
- Laboratório de Farmacologia e Neurobiologia, Centro de Investigação Farmacológica e Inovação Medicamentosa (MedInUP), Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto (ICBAS-UP), Porto, Portugal
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Varan G, Öncül S, Ercan A, Benito JM, Ortiz Mellet C, Bilensoy E. Cholesterol-Targeted Anticancer and Apoptotic Effects of Anionic and Polycationic Amphiphilic Cyclodextrin Nanoparticles. J Pharm Sci 2016; 105:3172-3182. [DOI: 10.1016/j.xphs.2016.06.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 06/07/2016] [Accepted: 06/24/2016] [Indexed: 01/11/2023]
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Tan HY, Wang N, Takahashi M, Feng Y, Li H, Feng Y. New Natural Pigment Fraction Isolated from Saw Palmetto: Potential for Adjuvant Therapy of Hepatocellular Carcinoma. Int J Mol Sci 2016; 17:ijms17081277. [PMID: 27527161 PMCID: PMC5000674 DOI: 10.3390/ijms17081277] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 07/20/2016] [Accepted: 07/28/2016] [Indexed: 12/20/2022] Open
Abstract
For the first time, we discovered a small proportion of aqueous fraction from Saw Palmetto apart from the fatty acid-rich fraction exhibited pharmacological activity. Therefore, this study aims to explore the anti-tumor potential of red pigmented aqueous fraction of Saw Palmetto, NYG on human hepatocellular carcinoma and its possible targets. Subcutaneous xenograft and orthotopic implantation models of HCC were used to evaluate the tumor inhibitory effect of NYG. Human hepatocellular carcinoma (HCC) cell lines and human umbilical vein endothelial cells (HUVEC) were used as in vitro model. The mRNA expression was conducted by qPCR. Protein expression was monitored by immunoblotting and immunohistochemistry. Cell migration and blood vessel formation were determined by chamber assay and tube formation assay, respectively. Significant tumor inhibition of NYG in dose-dependent manner was observed on subcutaneous xenograft and orthotopic HCC model. NYG has no direct action on cell viability or VEGF secretion of HCC cells. However, NYG reduced in vitro migration and vessel formation activities of HUVEC cells, as well as in vivo intratumoral neovascularization. NYG attenuated extracellular signal-regulated kinases (ERK) activation in endothelial cells, which may be associated with the suppression of migration and tube formation of HUVEC. NYG suppressed tumor expansion of HCC via inhibiting neovascularization, and may be potential adjuvant treatment for HCC.
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Affiliation(s)
- Hor-Yue Tan
- LKS Faculty of Medicine, School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, China.
| | - Ning Wang
- LKS Faculty of Medicine, School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, China.
| | - Masao Takahashi
- Heimat Co., Ltd., Heimat Building, 1-21-3 Nihonbashi, Chuo-Ku, Tokyo 103-0027, Japan.
| | - Yigang Feng
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China.
| | - Hongyun Li
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China.
| | - Yibin Feng
- LKS Faculty of Medicine, School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, China.
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Davidson CD, Fishman YI, Puskás I, Szemán J, Sohajda T, McCauliff LA, Sikora J, Storch J, Vanier MT, Szente L, Walkley SU, Dobrenis K. Efficacy and ototoxicity of different cyclodextrins in Niemann-Pick C disease. Ann Clin Transl Neurol 2016; 3:366-80. [PMID: 27231706 PMCID: PMC4863749 DOI: 10.1002/acn3.306] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Revised: 03/14/2016] [Accepted: 03/16/2016] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVE Niemann-Pick type C (NPC) disease is a fatal, neurodegenerative, lysosomal storage disorder characterized by intracellular accumulation of unesterified cholesterol (UC) and other lipids. While its mechanism of action remains unresolved, administration of 2-hydroxypropyl-β-cyclodextrin (HPβCD) has provided the greatest disease amelioration in animal models but is ototoxic. We evaluated other cyclodextrins (CDs) for treatment outcome and chemical interaction with disease-relevant substrates that could pertain to mechanism. METHODS NPC disease mice treated for 2 weeks with nine different CDs were evaluated for UC, and GM2 and GM3 ganglioside accumulation using immunohisto/cytochemical and biochemical assays. Auditory brainstem responses were determined in wild-type mice administered CDs. CD complexation with UC, gangliosides, and other lipids was quantified. RESULTS Four HPβCDs varying in degrees of substitution, including one currently in clinical trial, showed equivalent storage reduction, while other CDs showed significant differences in relative ototoxicity and efficacy, with reductions similar for the brain and liver. Importantly, HPγCD and two sulfobutylether-CDs showed efficacy with reduced ototoxicity. Complexation studies showed: incomplete correlation between CD efficacy and UC solubilization; an inverse correlation for ganglioside complexation; substantial interaction with several relevant lipids; and association between undesirable increases of UC storage in Kupffer cells and UC solubilization. INTERPRETATION CDs other than HPβCD identified here may provide disease amelioration without ototoxicity and merit long-term treatment studies. While direct interactions of CD-UC are thought central to the mechanism of correction, the data show that this does not strictly correlate with complexation ability and suggest interactions with other NPC disease-relevant substrates should be considered.
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Affiliation(s)
- Cristin D. Davidson
- Dominick P. Purpura Department of NeuroscienceRose F. Kennedy Center Intellectual and Developmental Disabilities Research CenterAlbert Einstein College of MedicineBronxNew York10461
| | - Yonatan I. Fishman
- Dominick P. Purpura Department of NeuroscienceRose F. Kennedy Center Intellectual and Developmental Disabilities Research CenterAlbert Einstein College of MedicineBronxNew York10461
| | - István Puskás
- CycloLab Cyclodextrin Research & Development Laboratory Ltd.BudapestH‐1097Hungary
| | - Julianna Szemán
- CycloLab Cyclodextrin Research & Development Laboratory Ltd.BudapestH‐1097Hungary
| | - Tamás Sohajda
- CycloLab Cyclodextrin Research & Development Laboratory Ltd.BudapestH‐1097Hungary
| | - Leslie A. McCauliff
- Department of Nutritional Sciences and Rutgers Center for Lipid ResearchRutgers UniversityNew BrunswickNew Jersey08901
| | - Jakub Sikora
- Dominick P. Purpura Department of NeuroscienceRose F. Kennedy Center Intellectual and Developmental Disabilities Research CenterAlbert Einstein College of MedicineBronxNew York10461
- Institute of Inherited Metabolic DisordersFirst Faculty of MedicineCharles University in Prague and General University Hospital in PraguePragueCzech Republic
| | - Judith Storch
- Department of Nutritional Sciences and Rutgers Center for Lipid ResearchRutgers UniversityNew BrunswickNew Jersey08901
| | - Marie T. Vanier
- Institut National de la Santé et de la Recherche MédicaleUnit 820; EA4611 Lyon‐1 UniversityLyonFrance
| | - Lajos Szente
- CycloLab Cyclodextrin Research & Development Laboratory Ltd.BudapestH‐1097Hungary
| | - Steven U. Walkley
- Dominick P. Purpura Department of NeuroscienceRose F. Kennedy Center Intellectual and Developmental Disabilities Research CenterAlbert Einstein College of MedicineBronxNew York10461
| | - Kostantin Dobrenis
- Dominick P. Purpura Department of NeuroscienceRose F. Kennedy Center Intellectual and Developmental Disabilities Research CenterAlbert Einstein College of MedicineBronxNew York10461
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Yamaguchi R, Perkins G, Hirota K. Targeting cholesterol with β-cyclodextrin sensitizes cancer cells for apoptosis. FEBS Lett 2015; 589:4097-105. [PMID: 26606906 DOI: 10.1016/j.febslet.2015.11.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Revised: 10/19/2015] [Accepted: 11/12/2015] [Indexed: 10/22/2022]
Abstract
We found that targeting cholesterol with beta-cyclodextrin (bCD) and its derivatives disrupted signal transduction between PI3K and AKT, attenuating AKT pro-survival signals. In their absence, 2-deoxyglucose (2DG) caused anti-apoptotic protein Mcll to dissociate from pro-apoptotic Bak at mitochondria. Normally Bak is sequestered by its inhibitory associations with Mcll and Bcl-xL, and only when Bak is released from both, is it free to form oligomers through which cytochrome c can escape into the cytosol. Thus an addition of a bcl-2 antagonist dissociates Bak from Bcl-xL, triggering cytochrome c release and inducing apoptosis. 2DG-bCD can also sensitize type II cancer cells for TRAIL-mediated apoptosis.
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Affiliation(s)
- Ryuji Yamaguchi
- Kansai Medical University, Department of Anesthesiology, Hirakata 573-1010, Japan.
| | - Guy Perkins
- National Center for Microscopy and Imaging Research, University of California San Diego, La Jolla, CA 92093, USA
| | - Kiichi Hirota
- Kansai Medical University, Department of Anesthesiology, Hirakata 573-1010, Japan
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18
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Nomura K, Shinmura R, Pivsa-Art W, Khawdas W, Aso Y, Ohara H. Interactions between cyclic oligo(l-lactic acid) and alkali metal ions in organic solvent. JOURNAL OF POLYMER RESEARCH 2015. [DOI: 10.1007/s10965-015-0826-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gao Y, Chu M, Hong J, Shang J, Xu D. Hypoxia induces cardiac fibroblast proliferation and phenotypic switch: a role for caveolae and caveolin-1/PTEN mediated pathway. J Thorac Dis 2014; 6:1458-68. [PMID: 25364523 DOI: 10.3978/j.issn.2072-1439.2014.08.31] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 08/05/2014] [Indexed: 01/18/2023]
Abstract
BACKGROUND Cardiac fibrosis following myocardial infarction (MI) results in heart failure. Caveolin-1, the main structural protein of caveolae, regulates signal transduction pathways controlling cell proliferation and apoptosis. Meanwhile, low phosphatase and tensin homolog (PTEN) activity enhances the PI3K/Akt signal pathway to induce cell proliferation. But whether caveolin-1 and PTEN activation regulates cardiac fibroblast proliferation and contributes to cardiac fibrosis from ischemic injury is incompletely understood. This study investigates whether hypoxia inducing cardiac fibroblast proliferation and phenotypic switch is caveolin-dependent. METHODS We used in vitro and in vivo models of ischemic injury, immunohistochemical staining, and cell proliferation assays to address this hypothesis. RESULTS We found that MI induced collagen deposition and cardiac dysfunction. After MI, mice displayed reduced caveolin-1 and PTEN expression and increased α-smooth muscle actin (α-SMA) expression in the infarct zone. Qualitative and quantitative analyses indicated that caveolin-1 expression was lowest at 7 days after MI, accompanied by increased collagen deposition and attenuated cardiac function. We cultured cardiac fibroblasts of mice were in hypoxia or normoxia conditions for 12, 24 and 48 hours. At all the time points, caveolin-1 and PTEN expression were gradually reduced, whereas, α-SMA was gradually increased. We also observed that cell viability was increased at 12 and 24 h after hypoxia then lightly decreased at 48 h. Additionally, disruption of caveolae with methyl-β-cyclodextrin (MβCD) enhanced p-Akt and α-SMA expression and fibroblast proliferation and phenotypic switch. CONCLUSIONS These findings suggest a key role for caveolae, perhaps through the caveolin-1/PTEN signaling pathway, in cardiac fibroblast proliferation and phenotypic switch under hypoxia.
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Affiliation(s)
- Yao Gao
- Department of Geriatrics, First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
| | - Ming Chu
- Department of Geriatrics, First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
| | - Jian Hong
- Department of Geriatrics, First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
| | - Jingping Shang
- Department of Geriatrics, First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
| | - Di Xu
- Department of Geriatrics, First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
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Tekpli X, Holme JA, Sergent O, Lagadic-Gossmann D. Role for membrane remodeling in cell death: Implication for health and disease. Toxicology 2013; 304:141-57. [DOI: 10.1016/j.tox.2012.12.014] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 11/29/2012] [Accepted: 12/20/2012] [Indexed: 12/31/2022]
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Palanca JM, Aguirre-Rueda D, Granell MV, Aldasoro M, Garcia A, Iradi A, Obrador E, Mauricio MD, Vila J, Gil-Bisquert A, Valles SL. Sugammadex, a neuromuscular blockade reversal agent, causes neuronal apoptosis in primary cultures. Int J Med Sci 2013; 10:1278-85. [PMID: 23983586 PMCID: PMC3752716 DOI: 10.7150/ijms.6254] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Accepted: 07/18/2013] [Indexed: 12/20/2022] Open
Abstract
Sugammadex, a γ-cyclodextrin that encapsulates selectively steroidal neuromuscular blocking agents, such as rocuronium or vecuronium, has changed the face of clinical neuromuscular pharmacology. Sugammadex allows a rapid reversal of muscle paralysis. Sugammadex appears to be safe and well tolerated. Its blood-brain barrier penetration is poor (< 3% in rats), and thus no relevant central nervous toxicity is expected. However the blood brain barrier permeability can be altered under different conditions (i.e. neurodegenerative diseases, trauma, ischemia, infections, or immature nervous system). Using MTT, confocal microscopy, caspase-3 activity, cholesterol quantification and Western-blot we determine toxicity of Sugammadex in neurons in primary culture. Here we show that clinically relevant sugammadex concentrations cause apoptotic/necrosis neuron death in primary cultures. Studies on the underlying mechanism revealed that sugammadex-induced activation of mitochondria-dependent apoptosis associates with depletion of neuronal cholesterol levels. Furthermore SUG increase CytC, AIF, Smac/Diablo and CASP-3 protein expression in cells in culture. Potential association of SUG-induced alteration in cholesterol homeostasis with oxidative stress and apoptosis activation occurs. Furthermore, resistance/sensitivity to oxidative stress differs between neuronal cell types.
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Affiliation(s)
- José M Palanca
- Department of Surgery/Anaesthesiology, School of Medicine and Odontology, University of Valencia, Spain
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Schmitz M, Signore SC, Zerr I, Althaus HH. Oligodendroglial process formation is differentially affected by modulating the intra- and extracellular cholesterol content. J Mol Neurosci 2012; 49:457-69. [PMID: 22740150 PMCID: PMC3566395 DOI: 10.1007/s12031-012-9833-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Accepted: 06/04/2012] [Indexed: 12/12/2022]
Abstract
Cholesterol is an essential component of eukaryotic plasma membranes and plays an important role in membrane organization and signaling processes. It is the major lipid component of detergent resistant caveolin-1 containing rafts which previously had been reported as a platform for nerve growth factor (NGF) signaling in oligodendrocytes (OL). Surprisingly, a knockdown of caveolin-1 attenuated the process formation of OL (Schmitz et al. J Neurosci Res 88:572–588, 2010), for which a loss of cholesterol could be responsible. In the present report, we could show that a caveolin-1 knockdown resulted in an elevation of cellular cholesterol level; it may indicate an important role of caveolin-1 in cholesterol trafficking to the plasma membrane. Treatment with exogenous PEG cholesterol, which was incorporated to the plasma membrane, supported oligodendroglial process formation, in particular when OL were stimulated by NGF. In this context we have found that OL express NPC1L1 (Niemann–Pick disease type C1-Like 1) which could modulate cholesterol uptake. In contrast, depletion of membrane-bound cholesterol diminished NGF-induced process formation concomitant with a reduced activity of p42/44 mitogen-activated protein kinases.
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Affiliation(s)
- Matthias Schmitz
- Max-Planck Institute of Experimental Medicine, RU Neural Regeneration, Hermann-Rein-Straße 3, 37075, Goettingen, Germany.
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Methyl-β-cyclodextrin induces programmed cell death in chronic myeloid leukemia cells and, combined with imatinib, produces a synergistic downregulation of ERK/SPK1 signaling. Anticancer Drugs 2012; 23:22-31. [DOI: 10.1097/cad.0b013e32834a099c] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wang H, Xie X, Zhang F, Zhou Q, Tao Q, Zou Y, Chen C, Zhou C, Yu S. Evaluation of cholesterol depletion as a marker of nephrotoxicity in vitro for novel β-cyclodextrin derivatives. Food Chem Toxicol 2011; 49:1387-93. [DOI: 10.1016/j.fct.2011.03.026] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Revised: 03/14/2011] [Accepted: 03/16/2011] [Indexed: 01/28/2023]
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25
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Kim S, Han J, Lee DH, Cho KH, Kim KH, Chung JH. Cholesterol, a Major Component of Caveolae, Down-regulates Matrix Metalloproteinase-1 Expression through ERK/JNK Pathway in Cultured Human Dermal Fibroblasts. Ann Dermatol 2010; 22:379-88. [PMID: 21165206 DOI: 10.5021/ad.2010.22.4.379] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2010] [Revised: 06/01/2010] [Accepted: 06/01/2010] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Cholesterol is a major component of specialized membrane microdomains known as lipid rafts or caveolae, which modulate the fluidity of biological membranes. Membrane cholesterol therefore plays an important role in cell signaling and vesicular transport. OBJECTIVE In this study, we investigated the effects of cholesterol on matrix metalloproteinase-1 (MMP-1) expression in human dermal fibroblasts. METHODS MMP-1 mRNA and protein expression were determined by RT-PCR and Western blotting, respectively. AP-1 DNA binding activity was detected by electrophoretic mobility shift assays. The amount of cholesterol was analyzed by cholesterol assay kit. RESULTS We observed that MMP-1 mRNA and protein expression was dose-dependently decreased by cholesterol treatment. In contrast, cholesterol depletion by a cholesterol depletion agent, methyl-beta-cyclodextrin (MβCD) in human dermal fibroblasts, increased MMP-1 mRNA and protein expression in a dose-dependent manner. Also, we investigated the regulatory mechanism of MβCD-induced MMP-1 expression: cholesterol depletion by MβCD, activated ERK1/2 and JNK, but not p38 MAPK cascade, and it also significantly increased c-Jun phosphorylation, c-Fos expression and activator protein-1 binding activity. Furthermore, the inhibition of ERK or JNK with specific chemical inhibitors prevented MβCD-induced MMP-1 expression, which indicates that ERK and JNK play an important role in cholesterol depletion-mediated MMP-1 induction. In addition, MβCD-induced phosphorylation of ERK and JNK and MMP-1 expression were suppressed by cholesterol repletion. CONCLUSION Our results suggest that cholesterol regulates MMP-1 expression through the control of ERK and JNK activity in human dermal fibroblasts.
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Affiliation(s)
- Sangmin Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Abstract
beta-cyclodextrin (beta-CD) and other cyclodextrins (CDs) have utility for solubilizing and stabilizing drugs; however, some are nephrotoxic when administered parenterally. A number of workers have attempted to identify, prepare, and evaluate various CD derivatives with superior inclusion complexation and maximal in vivo safety for various biomedical uses. A systematic study led to SBE-beta-CD (Captisol), a polyanionic variably substituted sulfobutyl ether of beta-CD, as a non-nephrotoxic derivative and HP-beta-CD, a modified CD developed by Janssen. SBE-beta-CD and HP-beta-CD have undergone extensive safety studies and are currently used in six products approved by the Food and Drug Administration (four for Captisol and two for HP-beta-CD). They are also in use in numerous clinical and preclinical studies. This article will focus on the issues that led to the development of these two CDs, their safety, characterization, and applications, and especially their ability to improve drug delivery. SBE-beta-CD interacts very well with neutral drugs to facilitate solubility and chemical stability, and because of its polyanionic nature, it interacts particularly well with cationic drugs. Complexes between SBE-beta-CD and HP-beta-CD and various drugs have been shown to rapidly dissociate after parenteral drug administration, to have no tissue-irritating effects after intramuscular dosing, and to result in superior oral bioavailability of poorly water-soluble drugs. The pharmacokinetics, tissue distribution, and cellular effects of some representative CDs, including SBE-beta-CD and HP-beta-CD, are reviewed. The safety profiles of CDs are discussed, with emphasis on the biological effects of some CDs on the gastrointestinal tract, kidney, and reproduction and development and the carcinogenic potential of CDs. In addition, human experience with CD derivatives, specifically SBE-beta-CD and HP-beta-CD, indicates that these two CDs are well tolerated in humans and have no adverse effects on the kidneys or other organs following either oral or intravenous administration.
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Affiliation(s)
- Valentino J Stella
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66047, USA.
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Differential regulation of cell death in head and neck cell carcinoma through alteration of cholesterol levels in lipid rafts microdomains. Biochem Pharmacol 2008; 75:761-72. [DOI: 10.1016/j.bcp.2007.10.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2007] [Revised: 09/25/2007] [Accepted: 10/01/2007] [Indexed: 11/18/2022]
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Lin J, Liu X, Bao Y, Hou S, An L, Lin X. Effects of isocamptothecin, a novel camptothecin analogue, on proliferation, apoptosis and telomerase activity in HaCaT cells. Exp Dermatol 2008; 17:530-6. [PMID: 18218022 DOI: 10.1111/j.1600-0625.2007.00674.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Camptothecin is a topoisomerase I inhibitor with definite anti-psoriatic effect. As it is limited in clinical application because of serious side effects and toxicity, many researchers are striving hard to develop derivatives or analogues of camptothecin with higher effects and less toxicity. To explore the anti-psoriatic potential of isocamptothecin, a novel camptothecin analogue, its effects on proliferation, apoptosis and telomerase activity were investigated in the human keratinocyte cell line HaCaT. Incubation with isocamptothecin resulted in a time- and concentration-dependent inhibition of HaCaT cell proliferation. However, isocamptothecin showed larger inhibitory concentration at 50% than camptothecin, suggesting far less cytotoxicity. In addition, isocamptothecin induced apoptosis in a concentration-dependent manner and induced typical morphologic features of apoptosis in HaCaT cells. Moreover, isocamptothecin downregulated the telomerase activity of HaCaT cells not only at concentrations of apoptosis induction but also at concentration insufficient to induce apoptosis, providing additional mechanisms that further account for its ability to inhibit keratinocytes proliferation and induce apoptosis. These results indicate that isocamptothecin possesses similar effects on keratinocytes with camptothecin, but shows far less cytotoxicity, it may probably become a promising agent for psoriasis therapy.
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Affiliation(s)
- Jingrong Lin
- Department of Dermatology, the first affiliated hospital of Dalian Medical University, Dalian, China
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Loftsson T, Vogensen SB, Brewster ME, Konrádsdóttir F. Effects of Cyclodextrins on Drug Delivery Through Biological Membranes. J Pharm Sci 2007; 96:2532-46. [PMID: 17630644 DOI: 10.1002/jps.20992] [Citation(s) in RCA: 219] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Cyclodextrins have proven themselves to be useful functional excipients. Cyclodextrin derivatives can be hydrophilic or relatively lipophilic based on their substitution and these properties can give insight into their ability to act as permeability enhancers. Lipophilic cyclodextrins such as the methylated derivatives are thought to increase drug flux by altering barrier properties of the membrane through component extraction or fluidization. The hydrophilic cyclodextrin family also modulate drug flux through membranes but via different mechanisms. The current effort seeks to provide various explanations for these observations based on interactions of hydrophilic cyclodextrins with the unstirred water layer that separates the bulk media from biological membranes such as the gastric mucosa, cornea and reproductive tract. Theories on the serial nature of resistances to drug flux are used to explain why hydrophilic cyclodextrins can enhance drug uptake in some situation (i.e., for lipophilic material) but not in others. In addition, the nature of secondary equilibria and competition between cyclodextrins and rheologically important biopolymers such as mucin are assessed to give a complete picture of the effect of these starch derivatives. This information can be useful not only in understanding the actions of cyclodextrin but also in expanding their application and uses.
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Affiliation(s)
- Thorsteinn Loftsson
- Faculty of Pharmacy, University of Iceland, Hofsvallagata 53, IS-107 Reykjavik, Iceland.
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Meeran SM, Katiyar SK. Grape seed proanthocyanidins promote apoptosis in human epidermoid carcinoma A431 cells through alterations in Cdki-Cdk-cyclin cascade, and caspase-3 activation via loss of mitochondrial membrane potential. Exp Dermatol 2007; 16:405-15. [PMID: 17437483 DOI: 10.1111/j.1600-0625.2007.00542.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Dietary grape seed proanthocyanidins (GSPs) prevent photocarcinogenesis in mice. Here, we report that in vitro treatment of human epidermoid carcinoma A431 cells with GSPs inhibited cellular proliferation (13-89%) and induced cell death (1-48%) in a dose (5-100 mug/ml)- and time (24, 48 and 72 h)-dependent manner. GSP-induced inhibition of cell proliferation was associated with an increase in G1-phase arrest at 24 h, which was mediated through the inhibition of cyclin-dependent kinases (Cdk) Cdk2, Cdk4, Cdk6 and cyclins D1, D2 and E and simultaneous increase in protein expression of cyclin-dependent kinase inhibitors (Cdki), Cip1/p21 and Kip1/p27, and enhanced binding of Cdki-Cdk. The treatment of A431 cells with GSPs (20-80 mug/ml) resulted in a dose-dependent increase in apoptotic cell death (26-58%), which was associated with an increased protein expression of proapoptotic Bax, decreased expression of antiapoptotic Bcl-2 and Bcl-xl, loss of mitochondrial membrane potential, and cleavage of caspase-9, caspase-3 and PARP. Pretreatment with the pan-caspase inhibitor (z-VAD-fmk) blocked the GSP-induced apoptosis in A431 cells suggesting that GSP-induced apoptosis is associated primarily with the caspase-3-dependent pathway. Together, our study suggests that GSPs possess chemotherapeutic potential against human epidermoid carcinoma cells in vitro, further in vivo mechanistic studies are required to verify the chemotherapeutic effect of GSPs in skin cancers.
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Affiliation(s)
- Syed M Meeran
- Department of Dermatology, University of Alabama at Birmingham, 1670 University Boulevard, Birmingham, AL 35294, USA
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Ulloth JE, Almaguel FG, Padilla A, Bu L, Liu JW, De Leon M. Characterization of methyl-beta-cyclodextrin toxicity in NGF-differentiated PC12 cell death. Neurotoxicology 2007; 28:613-21. [PMID: 17292476 PMCID: PMC1994916 DOI: 10.1016/j.neuro.2007.01.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2006] [Revised: 12/21/2006] [Accepted: 01/04/2007] [Indexed: 12/17/2022]
Abstract
Cyclodextrins (CDs) are used to deliver hydrophobic molecules in aqueous environments. Methyl-beta-cyclodextrin (MbetaCD), a member of this family of molecules, has been proposed to be a good carrier to deliver fatty acids to cells in culture. This report focuses on studying the in vitro effects of MbetaCD on nerve growth factor-differentiated PC12 (NGFDPC12) cells, a tissue culture model to study neuronal survival and differentiation. The main findings are: (1) NGFDPC12 cells have normal viability when exposed to 0.12% MbetaCD but showed a significant loss in cell viability at higher concentrations; (2) NGFDPC12 cells exposed to 0.25% MbetaCD exhibit nuclear condensation, blebbing and apoptotic bodies, and whole cell lysates exhibited an increase in caspase-3-like activity and high levels of Bax and Bcl-X(L) protein expression compared to control. Cultures treated with 0.25% MbetaCD also showed cleavage of normal 21-kDa Bax protein into a 18-kDa fragment. (3) Experiments using 0.12% MbetaCD to deliver oleic acid did not affect cell viability, in contrast NGFDPC12 cultures in which 0.25% MbetaCD concentration is used exhibited similar loss of cell viability as observed with 0.25% MbetaCD alone. Treating these cultures with caspase-3 inhibitor z-VAD-fmk did not protect the cells from MbetaCD toxic effects. (4) Immortalized Schwann cells (iSC) exposed to MbetaCD 0.12% did not show loss of cell viability while 0.25% MbetaCD triggered a significant toxicity but with a different dose and time course dynamic than NGFDPC12 cells. Thus, NGFDPC12 or iSC cell cultures exposed to 0.12% MbetaCD exhibits normal viability while higher concentrations increase in cell death and apoptosis.
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Affiliation(s)
| | | | | | | | | | - Marino De Leon
- *Corresponding author address: Center for Health Disparities and Molecular Medicine, 142 Mortensen Hall, 11085 Campus Street, Loma Linda University, School of Medicine, Loma Linda CA, 92350. Tel: 909–558–8777. Fax: 909–558–0177.
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