Topics

Tumor-Adhesive and pH-Degradable Microgels by Microfluidics and Photo-Crosslinking for Efficient Anti-Angiogenesis and Enhanced Cancer Chemotherapy.

07:00 EST 13th February 2020 | BioPortfolio

Summary of "Tumor-Adhesive and pH-Degradable Microgels by Microfluidics and Photo-Crosslinking for Efficient Anti-Angiogenesis and Enhanced Cancer Chemotherapy."

Tumor angiogenesis with the vascular network formation provides nutrition and oxygen for cancer cells, promoting the proliferation and metastasis of malignant tumors. Bevacizumab (Bev) as an efficient antiangiogenic antibody is able to normalize the tumor vasculature with better blood flow and reduced interstitial fluid pressure, allowing drugs with more uniform distribution and deeper penetration into the tumor, while it is highly difficult to realize the simultaneous delivery of Bev and anticancer drugs localized at the tumor tissue. Here we prepared tumor-adhesive and pH-degradable PVA microgels for tumor localized delivery of Bev and docetaxel (DTX), to achieve efficient anti-angiogenesis and enhanced cancer chemotherapy. PVA microgels (~200 μm) decorated with tissue-adhesive dopamine (DA) moieties were fabricated by a combination of high-throughput microfluidics technology and photo-crosslinking chemistry with a considerable co-encapsulation efficiency for Bev and DTX. PVA microgels exhibited sustained drug release at the tumoral acidic conditions as the microgel degradation, and DA moieties on the microgels facilitated Bev with long retention at the tumor tissue, highly blocking the VEGF and inhibiting the tumor angiogenesis, as compared to free Bev or no DA-decorated microgels. In addition, the antitumor activity on the 4T1-Luc breast tumor mouse model treated with Bev/DTX co-loaded microgels showed obviously superior tumor growth inhibition than other treatment groups, in which the combinational therapy efficacy of Bev and DTX mediated by the tumor-adhesive microgels was further confirmed by the immunohistochemistry (IHC) analysis. These PVA microgels with efficient anti-angiogenesis and enhanced cancer chemotherapy provide a highly potential platform to treat different malignant tumors as well as the recurrent and metastatic tumors.

Affiliation

Journal Details

This article was published in the following journal.

Name: Biomacromolecules
ISSN: 1526-4602
Pages:

Links

DeepDyve research library

PubMed Articles [11604 Associated PubMed Articles listed on BioPortfolio]

A layer-by-layer single-cell coating technique to produce injectable beating mini heart tissues via microfluidics.

Human induced pluripotent stem cells (hiPSCs) are used as an alternative for human embryonic stem cells. Cardiomyocytes derived from hiPSCs are employed in cardiac tissue regeneration constructs due t...

A Droplet-Based Microfluidics Route to Temperature-Responsive Colloidal Molecules.

Small clusters of spherical colloids that mimic real molecules, so-called colloidal molecules, hold great promise as building blocks in bottom-up routes to new materials. However, their typical hard s...

Effect of Charge Groups Immobilized in Hydrogel Microspheres during the Evaporation of Aqueous Sessile Droplets.

In contrast to conventional dispersions of solid microspheres, dilute dispersions containing soft hydrogel microspheres (microgels) exhibit unique drying behavior due to their selective adsorption at ...

Microfluidic technologies to engineer mesenchymal stem cell aggregates-applications and benefits.

Three-dimensional cell culture and the forming multicellular aggregates are superior over traditional monolayer approaches due to better mimicking of in vivo conditions and hence functions of a tissue...

Stimuli-responsive photoluminescence soft hybrid microgel particles: Synthesis and characterizations.

Stimuli-responsive (pH and temperature sensitive) photoluminescence hybrid particles are prepared using oppositely charged cationic microgels of Poly(N-isopropyl polyacrylamide) (PNIPAm) and anionic c...

Clinical Trials [7138 Associated Clinical Trials listed on BioPortfolio]

Safety and Efficacy of Corneal Crosslinking Using the PXL-Platinum 330 for Eyes With Corneal Ectatic Conditions

To evaluate the safety and effectiveness of the PXL Platinum 330 device for performing Corneal Crosslinking in patients with corneal thinning conditions.

Laser In-situ Keratomileusis With Crosslinking Compared to Conventional LASIK in Patients With High Myopia

The objectives of this study are to evaluate the safety and efficacy of a treatment regimen for high myopia and myopic astigmatism: LASIK followed by crosslinking performed with the KXL Cr...

Biodegradable Stents in Lung Transplantation

A prospective observational trial involving 10 patients is planned. Intervention "SX-ELLA Stent Degradable DV Bronchial (DV Stent)" will be implanted in the target lesion in general anesth...

Phototherapy Applied in Combination With Aerobic Training

Interventional

Investigating the Adhesion of New Adhesive to the Skin

The adhesion of the new adhesive strips is investigated on healthy volunteers

Medical and Biotech [MESH] Definitions

Antibodies, often monoclonal, in which the two antigen-binding sites are specific for separate ANTIGENIC DETERMINANTS. They are artificial antibodies produced by chemical crosslinking, fusion of HYBRIDOMA cells, or by molecular genetic techniques. They function as the main mediators of targeted cellular cytotoxicity and have been shown to be efficient in the targeting of drugs, toxins, radiolabeled haptens, and effector cells to diseased tissue, primarily tumors.

An autologous or commercial tissue adhesive containing FIBRINOGEN and THROMBIN. The commercial product is a two component system from human plasma that contains more than fibrinogen and thrombin. The first component contains highly concentrated fibrinogen, FACTOR VIII, fibronectin, and traces of other plasma proteins. The second component contains thrombin, calcium chloride, and antifibrinolytic agents such as APROTININ. Mixing of the two components promotes BLOOD CLOTTING and the formation and cross-linking of fibrin. The tissue adhesive is used for tissue sealing, HEMOSTASIS, and WOUND HEALING.

An anti-CTLA-4 ANTIGEN monoclonal antibody initially indicated for the treatment of certain types of metastatic MELANOMA. Its mode of actions may include blocking of CTLA-4 mediated inhibition of CYTOTOXIC T LYMPHOCYTES, allowing for more efficient destruction of target tumor cells.

Methods utilizing the principles of MICROFLUIDICS for sample handling, reagent mixing, and separation and detection of specific components in fluids.

An enzyme that catalyzes the reactivation by light of UV-irradiated DNA. It breaks two carbon-carbon bonds in PYRIMIDINE DIMERS in DNA.

Quick Search


DeepDyve research library

Relevant Topics

Cancer
  Bladder Cancer Brain Cancer Breast Cancer Cancer Cervical Cancer Colorectal Head & Neck Cancers Hodgkin Lymphoma Leukemia Lung Cancer Melanoma Myeloma Ovarian Cancer Pancreatic Cancer ...

Vascular
Vascular relates to blood vessels (Oxford Medical Dictionary) and can be used to describe the supply of blood, a disease affecting the blood vessels or molecules associated with these structures. For example, <!--LGfEGNT2Lhm-->atherosclerosis ...

Women's Health
Women's Health - key topics include breast cancer, pregnancy, menopause, stroke Follow and track Women's Health News on BioPortfolio: Women's Health News RSS Women'...


Searches Linking to this Article