F127 poloxamer effect on cytotoxicity induction of tumour cell cultures treated with doxorubicin

ConclusionsThese findings further uncover the potential usefulness of this copolymer as multidrug resistance reversal agent, increasing the efficacy of cancer therapies.
Source: Journal of Pharmacy and Pharmacology - Category: Drugs & Pharmacology Authors: Tags: Research Paper Source Type: research

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In this study we tested the clinoptilolite, chabazite, and natrolite ability to be loaded by antitumor ribonuclease binase and the cytotoxicity of the obtained complexes. We found the optimal conditions for binase loading into zeolites and established the dynamic of its release. Cytotoxic effects of zeolite-binase complexes toward colorectal cancer Caco2 cells were characterized after 24 and 48 h of incubation with cells using MTT-test. Zeolites were toxic by itselfs and reduced cells viability by 30% (clinoptilolite), 40% (chabazite), and 70% (natrolite) after 48 h of incubation. Binase complexes with clinoptilolite as we...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
In conclusion, e-As4S4 holds great potential for an alternative therapeutics in the treatment of breast cancer, due to its unique function of correcting the aggressive microenvironment. Introduction Metastasis is the leading cause of breast cancer mortality, which has been one major challenge in clinical treatment (1). In particular, triple-negative breast cancer (TNBC) is characterized by the absence of estrogen receptors (ER), progesterone receptors (PR) and HER2 receptors, which is one of the most aggressive types of breast cancers, marked by high rates of relapse, visceral metastases and early death (2, 3). The...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
Qingbin Cui1,2, Chao-Yun Cai2, Hai-Ling Gao2,3, Liang Ren1, Ning Ji2,4, Pranav Gupta2, Yuqi Yang2, Suneet Shukla5, Suresh V. Ambudkar5, Dong-Hua Yang2 and Zhe-Sheng Chen2* 1School of Public Health, Guangzhou Medical University, Guangdong, China 2Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY, United States 3Department of Histology and Embryology, Clinical Medical College, Weifang Medical University, Weifang, China 4Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tian...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
Conclusion Several TISC-based immunotherapeutic approaches are under development in various stages of preclinical studies. As outlined in this review article, a careful and more exhaustive genetic and metabolic understanding of TISC-associated phenotypes is critical to develop novel TISC based immunotherapies. Various components within the tumor microenvironment such as tumor cells, infiltrating immune cells, and supporting stromal cells impact the TISC metabolism. This unique metabolic profile leads to upregulation of certain enzymes and proteins such as ALDH1, CEP55, IDO COA1 etc., which can be utilized for development ...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
Conclusion and Perspective With in-depth understandings of antibodies, linkers, and payloads, ADCs have also achieved great development. The linkage strategy and target diversity have already improved the delivery of the payloads to tumor tissues and reduced exposure to normal tissues. With the development of payloads, some novel potent payloads are used by ADCs, which allows researchers to exploit novel linkers to attach the antibody and payloads without disturbing their potency (Dragovich et al., 2018). Furthermore, some irrelevant antigen-target ADCs also may exert toxicity to tumor cells due to the vascular gap of tum...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
In this study, we aimed to investigate the potential anti-proliferative and pro-apoptotic activities of SNG in a panel of MM cell lines (U266, IM9, MM1S, and RPMI-8226). SNG treatment of MM cells resulted in a dose-dependent decrease in cell viability through mitochondrial membrane potential loss and activation of caspase 3, 9, and cleavage of PARP. Pre-treatment of MM cells with a universal caspase inhibitor, Z-VAD-FMK, prevented SNG mediated loss of cell viability, apoptosis, and caspase activation, confirming that SNG-mediated apoptosis is caspase-dependent. The SNG-mediated apoptosis appears to be resulted from suppres...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
Discussion Suppressor of cytokine signaling 1 is an essential molecule for maintaining immune homeostasis and subverting inflammation. Disorders arising from excess inflammation or SOCS1 deficiency can be potentially treated with SOCS1 mimetics (Ahmed et al., 2015). While SOCS1 has promising potential in many disorders, it should be noted that new targets and actions of SOCS1 are still being discovered and not all the effects of this protein are beneficial in autoimmune diseases and cancer. For instance, SOCS1 degrades IRS1 and IRS2, required for insulin signaling, via the SOCS Box domain, thus, limiting its potential in ...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
In conclusion, osmotic burst of inflated complement-damaged cells may occur, but these bursts are most likely a consequence of metabolic collapse of the cell rather than the cause of cell death. The Complement Cell Death Mediator: A Concerted Action of Toxic Moieties Membrane pores caused by complement were first visualized by electron microscopy on red blood cell membranes as large ring structures (22). Similar lesions were viewed on E. coli cell walls (23). Over the years, ample information on the fine ultrastructure of the MAC that can activate cell death has been gathered (24) and has been recently further examined (...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
In conclusion, NC-LAP demonstrate antitumoral effect in HER-positive bladder cells by inducing cell cycle arrest and apoptosis exhibiting better effects compared to the non-encapsulated lapatinib. Our work suggests that the LAP loaded in nanoformulations could be a promising approach to treat tumors that presents EGFR overexpression phenotype. Introduction Bladder cancer (BC) is a heterogeneous disease which presents several molecular characteristics associated with different clinical outcomes (1). Urothelial or transitional cell carcinoma (TCC) represent the most frequent type of bladder cancer (2) and are classifie...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
Abstract For most cancers, the treatment of choice is still being chemotherapy despite of its severe adverse effects, systemic toxicity and limited efficacy due to the development of multidrug resistance (MDR). MDR leads to chemotherapy failure generally associated with a decrease in drug concentration inside cancer cells, frequently due to an overexpression of ABC transporters such as P-glycoprotein (P-gp/MDR1/ABCB1), multidrug resistance-associated proteins (MRPs/ABCCs), and breast cancer resistance protein (BCRP/ABCG2) that limit the efficacy of chemotherapeutic drugs. The aim of this review is to compile infor...
Source: Current Medicinal Chemistry - Category: Chemistry Authors: Tags: Curr Med Chem Source Type: research
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