Real-time quantitative monitoring of in vitro nasal drug delivery by a nasal epithelial mucosa-on-a-chip model

Author(s):  
Hanieh Gholizadeh ◽  
Hui Xin Ong ◽  
Peta Bradbury ◽  
Agisilaos Kourmatzis ◽  
Daniela Traini ◽  
...  
2021 ◽  
Author(s):  
Biswajit Roy ◽  
Rakesh Mengji ◽  
Samrat Roy ◽  
Bipul Pal ◽  
Avijit Jana ◽  
...  

In recent times, organelle-targeted drug delivery systems gained tremendous attention due to the site specific delivery of active drug molecules resulting in enhanced bioefficacy. In this context, the phototriggered drug delivery system (DDS) for releasing an active molecule is superior as it provides spatial and temporal control over the release. So far, near infrared (NIR) light responsive organelle targeted DDS has not yet been developed. Hence, we introduced a two-photon NIR-light responsive lysosome targeted ʽAIE + ESIPTʼ active single component DDS based on naphthalene chromophore. The Two-photon absorption cross-section of our DDS is 142 GM at 850 nm. The DDS was converted into pure organic nanoparticles for biological applications. Our nano-DDS is capable of selective targeting, AIE-luminogenic imaging, and drug release within the lysosome. In vitro studies using cancerous cell lines showed that our single component photoresponsive nanocarrier exhibited enhanced cytotoxicity and real-time monitoring ability of the drug release.


2020 ◽  
Vol 1 (1) ◽  
pp. 39-55
Author(s):  
Guanqiao Jin ◽  
Pohlee Cheah ◽  
Jing Qu ◽  
Lijuan Liu ◽  
Yongfeng Zhao

Melanoma is an aggressive form of skin cancer with a very high mortality rate. Early diagnosis of the disease, the utilization of more potent pharmacological agents, and more effective drug delivery systems are essential to achieve an optimal treatment plan. The applications of nanotechnology to improve therapeutic efficacy and early diagnosis for melanoma treatment have received great interest among researchers and clinicians. In this review, we summarize the recent progress of utilizing various nanomaterials for theranostics of melanoma. The key importance of using nanomaterials for theranostics of melanoma is to improve efficacy and reduce side effects, ensuring safe implementation in clinical use. As opposed to conventional in vitro diagnostic methods, in vivo medical imaging technologies have the advantages of being a type of non-invasive, real-time monitoring. Several common nanoparticles, including ultrasmall superparamagnetic iron oxide nanoparticles, silica nanoparticles, and carbon-based nanoparticles, have been applied to deliver chemotherapeutic agents for the theranostics of melanoma. The application of nanomaterials for theranostics in molecular imaging (MRI, PET, US, OI, etc.) plays an important role in targeting drug delivery of melanoma, by monitoring the distribution site of the molecular imaging probe and the therapeutic drug in the body in real-time. Hence, it is worthwhile to anticipate the approval of these nanomaterials for theranostics in molecular imaging by the US Food and Drug Administration in clinical trials.


2020 ◽  
Vol 11 (8) ◽  
pp. 485-495
Author(s):  
Per G Djupesland ◽  
John C Messina ◽  
Ramy A Mahmoud

Background: Nasal casts may characterize intranasal drug deposition. Methodology: The Koken cast, described as ‘anatomically correct’, and the Optinose cast, derived from MRI of a healthy male during velum closure, were dimensionally compared and assessed for deposition assessment suitability. Results: Smallest vertical cross-sectional areas (valve region) for Koken and Optinose right/left: 2.55/2.75 and 1.18/1.18 cm2, respectively, versus a ‘normative’ mean (range) of 0.85 cm2 (0.2–1.6 cm2). Intranasal volumes differed (computed tomography/water fill): Koken, 35.8/38.6 cm3 and Optinose, 24.1/25.0 cm3, versus a ‘normative’ mean (range) of 26.4 cm3 (20.9–31.1 cm3). Conclusion: Koken cast dimensions are larger than the normal range and the Optinose cast. The validity of casts for regulatory drug deposition studies is suspect.


Author(s):  
R Hughes ◽  
J Watterson ◽  
C Dickens ◽  
D Ward ◽  
A Banaszek

Bespak, a division of Consort Medical plc, and Queen's University Belfast have developed a viable and unique in-vitro testing capability for nasal drug delivery devices. The aim was to evaluate and optimize current and conceptual drug delivery devices by quantifying the deposition of drug in the various distinct regions of the nasal cavity. The development of this test apparatus employed computed tomography (CT) scan data of the human nasal cavity to construct an accurate representation of the human nasal airways. An investigation of suitable materials and manufacturing technologies was required, together with extensive analytical method development. It is possible for this technique to be further developed in an attempt to create a standardized apparatus based on nasal geometry that can be used to compare accurately deposition from drug delivery devices. This paper presents the issues encountered in the development of this test apparatus, including manufacturing and material limitations, investigation and choice of suitable materials, laboratory testing considerations, and the steps required to validate the analytical process.


2016 ◽  
Vol 36 ◽  
pp. 10-22 ◽  
Author(s):  
Abdallah Mohamed Ayoub ◽  
Mahmoud Mokhtar Ibrahim ◽  
Marwa Helmy Abdallah ◽  
Mahmoud A. Mahdy

2019 ◽  
Author(s):  
Eric O. McGhee ◽  
Alex J. McGhee ◽  
Derek L. Hood ◽  
Kylie E. Van Meter ◽  
Juan M. Urueña ◽  
...  

2011 ◽  
Vol 10 (4) ◽  
pp. 7290.2011.00002 ◽  
Author(s):  
Abhay V. Patil ◽  
Joshua J. Rychak ◽  
Alexander L. Klibanov ◽  
John A. Hossack

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