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Liposome BBB

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https://www.readbyqxmd.com/read/30319907/photodynamic-opening-of-the-blood-brain-barrier-to-high-weight-molecules-and-liposomes-through-an-optical-clearing-skull-window
#1
Chao Zhang, Wei Feng, Elena Vodovozova, Daria Tretiakova, Ivan Boldyrevd, Yusha Li, Jurgen Kürths, Tingting Yu, Oxana Semyachkina-Glushkovskaya, Dan Zhu
The photodynamic (PD) effect has been reported to be efficient for the opening of the blood-brain barrier (BBB), which provides a new informative platform for developing perspective strategies towards brain disease therapy and drug delivery. However, this method is usually performed via craniotomy due to high scattering of the turbid skull. In this work, we employed a newly-developed optical clearing skull window for investigating non-invasive PD-induced BBB opening to high weight molecules and 100-nm fluid-phase liposomes containing ganglioside GM1...
October 1, 2018: Biomedical Optics Express
https://www.readbyqxmd.com/read/30317945/updated-progress-of-nanocarrier-based-intranasal-drug-delivery-systems-for-treatment-of-brain-diseases
#2
Ying Fan, Min Chen, Jinqiang Zhang, Philippe Maincent, Xuefeng Xia, Wen Wu
Intranasal drug delivery is emerging as a reliable and promising pathway to deliver a wide range of therapeutic agents including small and large molecules, peptides and proteins, genes to the central nervous system for the treatment of brain diseases such as Alzheimer's disease, Parkinson's disease, depression, migraine, schizophrenia, and glioma. This presents noninvasive entry into the brain via direct nose-to-brain and/or indirect nose-to-blood-to-brain routes. Several nanocarrier-based strategies have been developed to transport therapeutic agents to the brain including nanoparticles, liposomes, and exosomes following intranasal delivery...
2018: Critical Reviews in Therapeutic Drug Carrier Systems
https://www.readbyqxmd.com/read/30308256/recent-progress-of-drug-nanoformulations-targeting-to-brain
#3
REVIEW
Abdur Rauf Khan, Xiaoye Yang, Manfei Fu, Guangxi Zhai
Most of the potential therapeutic agents capable to modulate the pathophysiology or treat the neurological disorders and brain tumors are useless in the current modern and advanced era of neuroscience due to the impeding action of biological barriers. Among various therapeutic strategies applied for translocation of drug delivery across the blood-brain barrier (BBB), nanoformulations set an excellent platform for brain targeting by overcoming the biological and chemical barriers and protecting drug from efflux to promote the optimum therapeutic drug concentration in brain parenchyma tissues...
October 8, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/30300391/effect-of-flow-on-targeting-and-penetration-of-angiopep-decorated-nanoparticles-in-a-microfluidic-model-blood-brain-barrier
#4
Iason Papademetriou, Else Vedula, Joseph Charest, Tyrone Porter
The blood-brain barrier (BBB) limits transport of nanoparticles from the circulation to the brain parenchyma. Angiopep-2, a peptide which functions as a brain transport vector, can be coupled to nanoparticles in order to facilitate binding and internalization by brain endothelial cells (ECs), and subsequent BBB penetration. This multi-step process may be affected by blood flow over brain ECs, as flow influences endothelial cell phenotype as well as interactions of nanoparticles with ECs. In the present study a microfluidic BBB model was constructed to evaluate binding and internalization by brain ECs, as well as BBB penetration of Angiopep-2 coupled liposomes (Ang2-Liposomes) in static and flow conditions...
2018: PloS One
https://www.readbyqxmd.com/read/30261346/co-delivery-of-doxorubicin-and-erlotinib-through-liposomal-nanoparticles-for-glioblastoma-tumor-regression-using-an-in-vitro-brain-tumor-model
#5
Sushant Lakkadwala, Jagdish Singh
Glioma is a highly malignant tumor that starts in the glial cells of brain. Tumor cells reproduce quickly and infiltrate rapidly in high grade glioma. Permeability of chemotherapeutic agents into brain is restricted owing to the presence of blood brain barrier (BBB). In this study, we developed a dual functionalized liposomal delivery system for efficient transport of chemotherapeutics across BBB for the treatment of glioma. Liposomes were surface modified with transferrin (Tf) for receptor targeting, and cell penetrating peptide PFVYLI (PFV) to increase translocation of doxorubicin (Dox) and Erlotinib (Erlo) across the BBB into glioblastoma (U87) tumor cells...
September 21, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/30218088/enhanced-uptake-of-gh625-by-blood-brain-barrier-compared-to-liver-in-vivo-characterization-of-the-mechanism-by-an-in-vitro-model-and-implications-for-delivery
#6
Annarita Falanga, Giuseppina Iachetta, Lucia Lombardi, Emiliana Perillo, Assunta Lombardi, Giancarlo Morelli, Salvatore Valiante, Stefania Galdiero
We have investigated the crossing of the blood brain barrier (BBB) by the peptide gH625 and compared to the uptake by liver in vivo. We clearly observed that in vivo administration of gH625 allows the crossing of the BBB, although part of the peptide is sequestered by the liver. Furthermore, we used a combination of biophysical techniques to gain insight into the mechanism of interaction with model membranes mimicking the BBB and the liver. We observed a stronger interaction for membranes mimicking the BBB where gH625 clearly undergoes a change in secondary structure, indicating the key role of the structural change in the uptake mechanism...
September 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/30182106/treatment-of-neurodegenerative-disorders-through-the-blood-brain-barrier-using-nanocarriers
#7
REVIEW
N Poovaiah, Z Davoudi, H Peng, B Schlichtmann, S Mallapragada, B Narasimhan, Q Wang
Neurodegenerative diseases refer to disorders of the central nervous system (CNS) that are caused by neuronal degradations, dysfunctions, or death. Alzheimer's disease, Parkinson's disease, and Huntington's disease (APHD) are regarded as the three major neurodegenerative diseases. There is a vast body of literature on the causes and treatments of these neurodegenerative diseases. However, the main obstacle in developing an effective treatment strategy is the permeability of the treatment components at the blood-brain barrier (BBB)...
September 20, 2018: Nanoscale
https://www.readbyqxmd.com/read/30104484/stealth-and-cationic-nanoliposomes-as-drug-delivery-systems-to-increase-andrographolide-bbb-permeability
#8
Vieri Piazzini, Elisa Landucci, Giulia Graverini, Domenico E Pellegrini-Giampietro, Anna Rita Bilia, Maria Camilla Bergonzi
(1) Background: Andrographolide (AG) is a natural compound effective for the treatment of inflammation-mediated neurodegenerative disorders. The aim of this investigation was the preparation of liposomes to enhance the penetration into the brain of AG, by modifying the surface of the liposomes by adding Tween 80 (LPs-AG) alone or in combination with Didecyldimethylammonium bromide (DDAB) (CLPs-AG). (2) Methods: LPs-AG and CLPs-AG were physically and chemically characterized. The ability of liposomes to increase the permeability of AG was evaluated by artificial membranes (PAMPA) and hCMEC/D3 cells...
August 13, 2018: Pharmaceutics
https://www.readbyqxmd.com/read/30097809/recent-status-of-nanomaterial-fabrication-and-their-potential-applications-in-neurological-disease-management
#9
REVIEW
Khwaja Salahuddin Siddiqi, Azamal Husen, Sayed Sartaj Sohrab, Mensur Osman Yassin
Nanomaterials (NMs) are receiving remarkable attention due to their unique properties and structure. They vary from atoms and molecules along with those of bulk materials. They can be engineered to act as drug delivery vehicles to cross blood-brain barriers (BBBs) and utilized with better efficacy and safety to deliver specific molecules into targeted cells as compared to conventional system for neurological disorders. Depending on their properties, various metal chelators, gold nanoparticles (NPs), micelles, quantum dots, polymeric NPs, liposomes, solid lipid NPs, microparticles, carbon nanotubes, and fullerenes have been utilized for various purposes including the improvement of drug delivery system, treatment response assessment, diagnosis at early stage, and management of neurological disorder by using neuro-engineering...
August 10, 2018: Nanoscale Research Letters
https://www.readbyqxmd.com/read/30059851/mixed-cationic-liposomes-for-brain-delivery-of-drugs-by-the-intranasal-route-the-acetylcholinesterase-reactivator-2-pam-as-encapsulated-drug-model
#10
Tatiana N Pashirova, Irina V Zueva, Konstantin A Petrov, Svetlana S Lukashenko, Irek R Nizameev, Natalya V Kulik, Aleksandra D Voloshina, Laszlo Almasy, Marsil K Kadirov, Patrick Masson, Eliana B Souto, Lucia Ya Zakharova, Oleg G Sinyashin
New mixed cationic liposomes based on L-α-phosphatidylcholine and dihexadecylmethylhydroxyethylammonium bromide (DHDHAB) were designed to overcome the BBB crossing by using the intranasal route. Synthesis and self-assembly of DHDHAB were performed. A low critical association concentration (0.01 mM), good solubilization properties toward hydrophobic dye Orange OT and antimicrobial activity against gram-positive bacteria Staphylococcus aureus (MIC=7.8 μg mL-1 ) and Bacillus cereus (MIC=7.8 μg mL-1 ), low hemolytic activities against human red blood cells (less than 10%) were achieved...
November 1, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/30055226/dual-functionalized-5-fluorouracil-liposomes-as-highly-efficient-nanomedicine-for-glioblastoma-treatment-as-assessed-in-an-in-vitro-brain-tumor-model
#11
Sushant Lakkadwala, Jagdish Singh
Drug delivery to the brain has been a major challenge due to the presence of the blood-brain barrier, which limits the uptake of most chemotherapeutics into brain. We developed a dual-functionalized liposomal delivery system, conjugating cell penetrating peptide penetratin to transferrin-liposomes (Tf-Pen-conjugated liposomes) to enhance the transport of an anticancer chemotherapeutic drug, 5-fluorouracil (5-FU), across the blood-brain barrier into the tumor cells. The in vitro cellular uptake study showed that the dual-functionalized liposomes are capable of higher cellular uptake in glioblastoma (U87) and brain endothelial (bEnd...
July 25, 2018: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/30043675/efficient-treatment-of-parkinson-s-disease-using-ultrasonography-guided-rhfgf20-proteoliposomes
#12
Jianlou Niu, Junjun Xie, Kaiwen Guo, Xiaomin Zhang, Feng Xia, Xinyu Zhao, Lintao Song, Deli Zhuge, Xiaokun Li, Yingzheng Zhao, Zhifeng Huang
Fibroblast growth factor-20 (FGF20) is a paracrine member of the FGF family that is preferentially expressed in the substantia nigra pars compacta (SNpc). Previous studies have demonstrated that FGF20 enhances the survival of dopaminergic neurons suggesting the potential use of FGF20 to treat Parkinson's disease (PD). However, the reduced solubility of the bacterial recombinant human FGF20 (rhFGF20) and the absence of efficient strategies to transport rhFGF20 across the blood-brain barrier (BBB) have halted its clinical application...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/30026685/recent-advances-in-the-therapeutic-and-diagnostic-use-of-liposomes-and-carbon-nanomaterials-in-ischemic-stroke
#13
REVIEW
Lorena F Fernandes, Gisele E Bruch, André R Massensini, Frédéric Frézard
The complexity of the central nervous system (CNS), its limited self-repairing capacity and the ineffective delivery of most CNS drugs to the brain contribute to the irreversible and progressive nature of many neurological diseases and also the severity of the outcome. Therefore, neurological disorders belong to the group of pathologies with the greatest need of new technologies for diagnostics and therapeutics. In this scenario, nanotechnology has emerged with innovative and promising biomaterials and tools...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/30015470/brain-targeting-by-liposome-biomolecular-corona-boosts-anticancer-efficacy-of-temozolomide-in-glioblastoma-cells
#14
Antonietta Arcella, Sara Palchetti, Luca Digiacomo, Daniela Pozzi, Anna Laura Capriotti, Luigi Frati, Maria Antonietta Oliva, Georgia Tsaouli, Rossella Rota, Isabella Screpanti, Morteza Mahmoudi, Giulio Caracciolo
Temozolomide (TMZ) is the current first-line chemotherapy for treatment of glioblastoma multiforme (GBM). However, similar to other brain therapeutic compounds, access of TMZ to brain tumors is impaired by the blood-brain barrier (BBB) leading to poor response for GBM patients. To overcome this major hurdle, we have synthesized a set of TMZ-encapsulating nanomedicines made of four cationic liposome (CL) formulations with systematic changes in lipid composition and physical-chemical properties. The targeting nature of this nanomedicine is provided by the recruitment of proteins, with natural targeting capacity, in the biomolecular corona (BC) layer that forms around CLs after exposure to human plasma (HP)...
July 31, 2018: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29987489/intravenously-administered-novel-liposomes-dcl64-deliver-oligonucleotides-to-cerebellar-purkinje-cells
#15
Ana Tari Ashizawa, Jenny Holt, Kelsey Faust, Weier Liu, Anjana Tiwari, Nan Zhang, Tetsuo Ashizawa
Cerebellar Purkinje cells (PCs) show conspicuous damages in many ataxic disorders. Targeted delivery of short nucleic acids, such as antisense oligonucleotides, to PCs may be a potential treatment for ataxic disorders, especially spinocerebellar ataxias (SCAs), which are mostly caused by a gain of toxic function of the mutant RNA or protein. However, oligonucleotides do not cross the blood-brain barrier (BBB), necessitating direct delivery into the central nervous system (CNS) through intra-thecal, intra-cisternal, intra-cerebral ventricular, or stereotactic parenchymal administration...
July 9, 2018: Cerebellum
https://www.readbyqxmd.com/read/29944099/a-novel-delivery-system-of-cyclovirobuxine-d-for-brain-targeting-angiopep-conjugated-polysorbate-80-coated-liposomes-via-intranasal-administration
#16
Hanmei Wei, Tuo Liu, Ning Jiang, Kang Zhou, Kangqiang Yang, Weimin Ning, Yang Yu
The blood-brain barrier (BBB) poses a challenge for the treatment of cerebrovascular diseases including cerebral ischemia-reperfusion injury, Parkinson's syndrome, and cerebral tumors. Nanotechnology has developed as a promising strategy for drug delivery applications to the brain, especially liposomes (Lps) that have shown an intrinsic ability to cross the BBB. Angiopep-2 (ANG), a ligand for low-density lipoprotein receptor-related protein-1 (LRP1), is a good prospect for use as a targeting ligand for brain delivery using Lps...
July 1, 2018: Journal of Biomedical Nanotechnology
https://www.readbyqxmd.com/read/29800759/synergistic-tumor-microenvironment-targeting-and-blood-brain-barrier-penetration-via-a-ph-responsive-dual-ligand-strategy-for-enhanced-breast-cancer-and-brain-metastasis-therapy
#17
Man Li, Kairong Shi, Xian Tang, Jiaojie Wei, Xingli Cun, Yang Long, Zhirong Zhang, Qin He
Cancer associated fibroblasts (CAFs) which shape the tumor microenvironment (TME) and the presence of blood brain barrier (BBB) remain great challenges in targeting breast cancer and its brain metastasis. Herein, we reported a strategy using PTX-loaded liposome co-modified with acid-cleavable folic acid (FA) and BBB transmigrating cell penetrating peptide dNP2 peptide (cFd-Lip/PTX) for enhanced delivery to orthotopic breast cancer and its brain metastasis. Compared with single ligand or non-cleavable Fd modified liposomes, cFd-Lip exhibited synergistic TME targeting and BBB transmigration...
August 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29790744/myristic-acid-modified-d-a7r-peptide-for-whole-process-glioma-targeted-drug-delivery
#18
Man Ying, Songli Wang, Mingfei Zhang, Ruifeng Wang, Hangchang Zhu, Huitong Ruan, Danni Ran, Zhilan Chai, Xiaoyi Wang, Weiyue Lu
The clinical treatment of aggressive glioma has been a great challenge, mainly because of the complexity of the glioma microenvironment and the existence of the blood-brain tumor barrier (BBTB)/blood-brain barrier (BBB), which severely hampers the effective accumulation of most therapeutic agents in the glioma region. Additionally, vasculogenic mimicry (VM), angiogenesis, and glioma stem cells (GSC) in malignant glioma also lead to the failure of clinical therapy. To address the aforementioned issues, a whole-process glioma-targeted drug delivery strategy was proposed...
June 13, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29721078/localized-delivery-of-curcumin-into-brain-with-polysorbate-80-modified-cerasomes-by-ultrasound-targeted-microbubble-destruction-for-improved-parkinson-s-disease-therapy
#19
Nisi Zhang, Fei Yan, Xiaolong Liang, Manxiang Wu, Yuanyuan Shen, Min Chen, Yunxue Xu, Guangyang Zou, Peng Jiang, Caiyun Tang, Hairong Zheng, Zhifei Dai
Rationale: Treatment for Parkinson's disease (PD) is challenged by the presence of the blood-brain barrier (BBB) that significantly limits the effective drug concentration in a patient's brain for therapeutic response throughout various stages of PD. Curcumin holds the potential for α-synuclein clearance to treat PD; however, its applications are still limited due to its low bioavailability and poor permeability through the BBB in a free form. Methods: Herein, this paper fabricated curcumin-loaded polysorbate 80-modified cerasome (CPC) nanoparticles (NPs) with a mean diameter of ~110 nm for enhancing the localized curcumin delivery into the targeted brain nuclei via effective BBB opening in combination with ultrasound-targeted microbubble destruction (UTMD)...
2018: Theranostics
https://www.readbyqxmd.com/read/29719787/liposomes-and-lipid-disks-traverse-the-bbb-and-bbtb-as-intact-forms-as-revealed-by-two-step-f%C3%A3-rster-resonance-energy-transfer-imaging
#20
Tongcheng Dai, Kuan Jiang, Weiyue Lu
The blood-brain barrier (BBB) and the blood-brain tumor barrier (BBTB) prevent drug and nano-drug delivery systems from entering the brain. However, ligand-mediated nano-drug delivery systems have significantly enhanced the therapeutic treatment of glioma. In this study we investigated the mechanism especially the integrity of liposomes and lipid disks while traversing the BBB and BBTB both in vitro and in vivo . Fluorophores (DiO, DiI and DiD) were loaded into liposomes and lipid disks to form Förster resonance energy transfer (FRET) nano-drug delivery systems...
March 2018: Acta Pharmaceutica Sinica. B
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