Doxorubicin-loaded bacterial outer-membrane vesicles exert enhanced anti-tumor efficacy in non-small-cell lung cancer

Publication date: Available online 20 February 2020Source: Acta Pharmaceutica Sinica BAuthor(s): Kudelaidi Kuerban, Xiwen Gao, Hui Zhang, Jiayang Liu, Mengxue Dong, Lina Wu, Ruihong Ye, Meiqing Feng, Li YeAbstractMore efficient drug delivery system and formulation with less adverse effects are needed for the clinical application of broad-spectrum antineoplastic agent doxorubicin (DOX). Here we obtained outer-membrane vesicles (OMVs), a nano-sized proteoliposomes naturally released by Gram-negative bacteria, from attenuated Klebsiella pneumonia and prepared doxorubicin-loaded OMVs (DOX-OMV). Confocal microscopy and in vivo distribution study observed that DOX encapsulated in OMVs was efficiently transported into NSCLC A549 cells. DOX-OMV resulted in intensive cytotoxic effects and cell apoptosis in vitro as evident from MTT assay, Western blotting and flow cytometry due to the rapid cellular uptake of DOX. In A549 tumor-bearing BALB/c nude mice, DOX-OMV presented a substantial tumor growth inhibition with favorable tolerability and pharmacokinetic profile, and TUNEL assay and H&E staining displayed extensive apoptotic cells and necrosis in tumor tissues. More importantly, OMVs’ appropriate immunogenicity enabled the recruitment of macrophages in tumor microenvironment which might synergize with their cargo DOX in vivo. Our results suggest that OMVs can not only function as biological nanocarriers for chemotherapeutic agents but also elicit suitable immune responses, thus...
Source: Acta Pharmaceutica Sinica B - Category: Cancer & Oncology Source Type: research

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Programmed cell death ‐1 immune checkpoint inhibitor (ICI) antibody has proven to be effective in advanced non‐small cell lung cancer (NSCLC) patients positive for programmed cell death‐1 ligand‐1. However, there are currently no reports which evaluate drug efficacy by continuous bronchoscopic observation. A 75‐ year‐old man with complete right atelectasis was diagnosed with squamous cell carcinoma (SCC) of the right lower lobe (tumor proportion score: TPS 90%, cT4N3M0, stage 3C). For first‐line chemotherapy, carboplatin and nab‐paclitaxel were effective for the primary lesion and the right lung atele ctasi...
Source: Thoracic Cancer - Category: Cancer & Oncology Authors: Tags: CASE REPORT Source Type: research
Conclusion Radiation with SIB intensity modulated radiotherapy technique is effective and safe for patients with locally advanced NSCLC. DOI: 10.3779/j.issn.1009-3419.2019.11.03
Source: Chinese Journal of Lung Cancer - Category: Cancer & Oncology Source Type: research
Conclusion: Atezolizumab 1,200 mg and pembrolizumab 2 mg/kg every 3 weeks were ordinarily safer than other ICIs. When treating NSCLC, nivolumab had the lowest risk; when treating melanoma, pembrolizumab had the lowest toxicity.
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
ConclusionsThe primary end point of this study was not achieved. However, the therapy was well tolerated and may be a treatment option for a future study with patients responsive to short-term erlotinib treatment.Clinical trials registration numberUMIN ID: 000013125.
Source: Cancer Chemotherapy and Pharmacology - Category: Cancer & Oncology Source Type: research
This article is protected by copyright. All rights reserved. PMID: 31381177 [PubMed - as supplied by publisher]
Source: Clinical and Experimental Pharmacology and Physiology - Category: Drugs & Pharmacology Authors: Tags: Clin Exp Pharmacol Physiol Source Type: research
Conclusions This review describes how leukocyte-heparanase can be a double-edged sword in tumor progression; it can enhance tumor immune surveillance and tumor cell clearance, but also promote tumor survival and growth. We also discuss the potential of using heparanase in leukocyte therapies against tumors, and the effects of heparanase inhibitors on tumor progression and immunity. We are just beginning to understand the influence of heparanase on a pro/anti-tumor immune response, and there are still many questions to answer. How do the pro/anti-tumorigenic effects of heparanase differ across different cancer types? Does...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
Mark E. Gray1,2*, James Meehan2,3, Paul Sullivan4, Jamie R. K. Marland4, Stephen N. Greenhalgh1, Rachael Gregson1, Richard Eddie Clutton1, Carol Ward2, Chris Cousens5, David J. Griffiths5, Alan Murray4 and David Argyle1 1The Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom 2Cancer Research UK Edinburgh Centre and Division of Pathology Laboratories, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, United Kingdom 3School of Engineering and Physical Sciences, Institute of Sensors, Signals and Systems, Heriot-Watt Univer...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
ConclusionsCRT was the only predictive factor for longer survival in LC patients; however, no LC-IP patients received CRT, possibly because of the underlying IP.
Source: Respiratory Investigation - Category: Respiratory Medicine Source Type: research
Publication date: Available online 13 April 2018Source: Respiratory InvestigationAuthor(s): Kohei Otsubo, Isamu Okamoto, Naoki Hamada, Yoichi NakanishiAbstractInterstitial lung disease (ILD) is a risk factor for lung cancer development and is frequently observed in patients with lung cancer. Individuals with ILD have been excluded from most prospective clinical trials of lung cancer therapies because of the risk of ILD acute exacerbation. Thus, the optimal anticancer drug treatment for such patients has yet to be established. Tyrosine kinase inhibitors are avoided for the treatment of advanced non–small cell lung can...
Source: Respiratory Investigation - Category: Respiratory Medicine Source Type: research
This study was to evaluate the correlation between the change of apurinic/apyrimidinic endonuclease 1/redox factor-1 (Ape1/Ref-1), intercellular adhesion molecules 1 (ICAM-1) and interleukin-17A (IL-17A) before and after radiotherapy and radiation pneumonitis for local advanced non-small cell lung cancer (NSCLC) patients with concurrent chemoradiotherapy. Methods NSCLC patients (68 cases) were treated with concurrent radiotherapy and chemotherapy, every patient ’s normal tissue were controlled with a same radation dose. 68 local advanced NSCLC patients with concurrent chemoradiotherapy were detected the levels of Ape...
Source: Chinese Journal of Lung Cancer - Category: Cancer & Oncology Source Type: research
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