Abstract 2198: Cancer cell membrane coated biomimetic nanoparticles: Synthesis, characterization, and functionality

Author(s):  
Jiefu Jin ◽  
Di Chang ◽  
Samit Chatterjee ◽  
Balaji Krishnamachary ◽  
Yelena Mironchik ◽  
...  
2019 ◽  
Vol 11 (8) ◽  
pp. 7850-7861 ◽  
Author(s):  
Jiefu Jin ◽  
Balaji Krishnamachary ◽  
James D. Barnett ◽  
Samit Chatterjee ◽  
Di Chang ◽  
...  

2021 ◽  
Author(s):  
Fangjie Chen ◽  
Lu Wang ◽  
Jinyao Liu

Abstract Despite the activation of T lymphocytes by antigen-presenting cells is responsible for eliciting antigen-specific immune responses, their crosstalking suffers from temporospatial limitations and endogenous influencing factors, which restrict the generation of a strong antitumor immunity. Here, we describe the manipulation of cross-priming of T cells using biomimetic nanoparticles (BNs) enabled by cascade cell membrane coating. BNs are resulted from coating nanoparticulate substrates with cell membranes extracted from dendritic cells (DCs) that are pre-pulsed with cancer cell membrane-coated nanoparticles. With a DC membrane that presents an array of cancer cell membrane antigen epitopes, BNs inherit intrinsic membrane function of DCs. Strikingly, BNs can directly cross-prime T cells and provoke robust yet antigen-specific antitumor responses in multiple mouse models. Combination with clinical anti-programmed death-1 antibodies demonstrates a practical way of BNs to achieve desirable tumor regression and survival rate. This work spotlights the impact of nanoparticles on direct cross-priming of T cells and supports a unique yet modulate platform for boosting an effective adaptive immunity for immunotherapy.


ACS Nano ◽  
2016 ◽  
Vol 10 (11) ◽  
pp. 10049-10057 ◽  
Author(s):  
Ze Chen ◽  
Pengfei Zhao ◽  
Zhenyu Luo ◽  
Mingbin Zheng ◽  
Hao Tian ◽  
...  

Author(s):  
Vasil Tsanov ◽  
Hristo Tsanov

Background:: This article concentrates on the processes occurring in the medium around the cancer cell and the transfer of glycoside amides through their cell membrane. They are obtained by modification of natural glycoside-nitriles (cyano-glycosides). Hydrolysis of starting materials in the blood medium and associated volume around physiologically active healthy and cancer cells, based on quantum-chemical semi-empirical methods, is considered. Objective:: Based on the fact that the cancer cell feeds primarily on carbohydrates, it is likely that organisms have adapted to take food containing nitrile glycosides and / or modified forms to counteract "external" bioactive activity. Cancers, for their part, have evolved to create conditions around their cells that eliminate their active apoptotic forms. This is far more appropriate for them than changing their entire enzyme regulation to counteract it. In this way, it protects itself and the gene sets and develops according to its instructions. Methods:: Derived pedestal that closely defines the processes of hydrolysis in the blood, the transfer of a specific molecular hydrolytic form to the cancer cell membrane and with the help of time-dependent density-functional quantum- chemical methods, its passage and the processes of re-hydrolysis within the cell itself, to forms causing chemical apoptosis of the cell - independent of its non-genetic set, which seeks to counteract the process. Results:: Used in oncology it could turn a cancer from a lethal to a chronic disease (such as diabetes). The causative agent and conditions for the development of the disease are not eliminated, but the amount of cancer cells could be kept low for a long time (even a lifetime). Conclusion:: The amide derivatives of nitrile glycosides exhibit anti-cancer activity, the cancer cell probably seeks to displace hydrolysis of these derivatives in a direction that would not pass through its cell membrane and the amide- carboxyl derivatives of nitrile glycosides could deliver extremely toxic compounds within the cancer cell itself and thus block and / or permanently damage its normal physiology.


2021 ◽  
Vol 6 (12) ◽  
pp. 4402-4414
Author(s):  
Yueyue Fan ◽  
Yuexin Cui ◽  
Wenyan Hao ◽  
Mengyu Chen ◽  
Qianqian Liu ◽  
...  

Small ◽  
2021 ◽  
pp. 2006484
Author(s):  
Fatemeh Oroojalian ◽  
Mohammad Beygi ◽  
Behzad Baradaran ◽  
Ahad Mokhtarzadeh ◽  
Mohammad‐Ali Shahbazi

2021 ◽  
Vol 11 (6) ◽  
pp. 2846
Author(s):  
Jong-ryul Choi ◽  
Juyoung Park

Techniques that increase the permeability of the cell membrane and transfer drugs or genes to cells have been actively developed as effective therapeutic modalities. Also, in line with the development of these drug delivery techniques, the establishment of tools to verify the techniques at the cellular level is strongly required. In this study, we demonstrated an optical imaging platform integrated with an ultrasound application system to verify the feasibility of safe and efficient drug delivery through the cell membrane using ultrasound-microbubble cavitation. To examine the potential of the platform, fluorescence images of both Fura-2 AM and propidium iodide (PI) to measure calcium flux changes and intracellular PI delivery, respectively, during and after the ultrasound-microbubble cavitation in the cervical cancer cell were acquired. Using the optical imaging platform, we determined that calcium flux increased immediately after the ultrasound-microbubble cavitation and were restored to normal levels, and fluorescence signals from intracellular PI increased gradually after the cavitation. The results acquired by the platform indicated that ultrasound-microbubble cavitation can deliver PI into the cervical cancer cell without irreversible damage of the cell membrane. The application of an additional fluorescent imaging module and high-speed imaging modalities can provide further improvement of the performance of this platform. Also, as additional studies in ultrasound instrumentations to measure real-time cavitation signals progress, we believe that the ultrasound-microbubble cavitation-based sonoporation can be employed for safe and efficient drug and gene delivery to various cancer cells.


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