Thetreatment Of Cancer Research Articles

Research Progress on Quantification Methods of Drug Concentration of Monoclonal Antibodies

Background: With the development of monoclonal antibodies (mAbs) from the first generation of mice to the fourth generation of human origin, the efficacy and safety in the treatment of many diseases have been continuously improved. MAbs have been widely used in the treatment of cancer, chronic inflammatory diseases, etc. However, the treatment response of mAbs varies greatly among individuals, and drug exposure may be affected by a variety of physiological and pathological factors, such as combined use of drugs and progression of the disease. Therefore, studies tend to recommend therapeutic drug monitoring and individualized treatment strategies. Objective: In this paper, the commonly used methods of quantification of monoclonal antibodies were reviewed, especially liquid chromatography- mass spectrometry (LC-MS/MS) and enzymelinked immunosorbent assay (ELISA), to provide technical support for therapeutic drug detection and individualize dosing for patients. Conclusion: For patients achieving mAbs treatment, it is necessary to carry out therapeutic drug monitoring and take it as a routine monitoring index. We recommend that for pharmaceutical laboratories in hospitals, establishing an appropriate assay format, such as ELISA and LC-MS/MS is critical to determine drug concentration and antidrug antibody (ADA) for mAbs.

Cancer Chemotherapy via Natural Bioactive Compounds.

Cancer-induced mortality is increasingly prevalent globally, which skyrocketed the necessity to discover new/novel, safe and effective anticancer drugs. Cancer is characterized by the continuous multiplication of cells in the human, which is unable to control. Scientific research is drawing its attention toward naturally-derived bioactive compounds as they have fewer side effects compared to the current synthetic drugs used for chemotherapy. Drugs isolated from natural sources and their role in the manipulation of epigenetic markers in cancer are discussed briefly in this review article. With advancing medicinal plant biotechnology and microbiology in the past century, several anticancer phytomedicines were developed. Modern pharmacopeia contains at least 25% herbal-based remedies, including clinically used anticancer drugs. These drugs mainly include the podophyllotoxin derivatives vinca alkaloids, curcumin, mistletoe plant extracts, taxanes, camptothecin, combretastatin, and colchicine artesunate, homoharringtonine, ellipticine, roscovitine, maytansine, tapsigargin,and bruceantin. Compounds (psammaplin, didemnin, dolastin, ecteinascidin, and halichondrin) isolated from marine sources and animals such as microalgae, cyanobacteria, heterotrophic bacteria, invertebrates. They have been evaluated for their anticancer activity on cells and experimental animal models and used chemotherapy.Drug-induced manipulation of epigenetic markers plays an important role in the treatment of cancer. The development of a new drug from isolated bioactive compounds of plant sources has been a feasible way to lower the toxicity and increase their effectiveness against cancer. Potential anticancer therapeutic leads obtained from various ethnomedicinal plants, foods, marine, and microorganisms are showing effective yet realistically safe pharmacological activity. This review will highlight important plant-based bioactive compounds like curcumin, stilbenes, terpenes, other polyphenolic phyto-compounds, and structurally related families that are used to prevent/ ameliorate cancer. However, a contribution from all possible fields of science is still a prerequisite for discovering safe and effective anticancer drugs.

Nanocarriers(s) Based Approaches in Cancer Therapeutics

Nanomedicine is an emerging field, which constitutes a new direction in the treatment of cancer. The advent of nanotechnology has the potential to greatly facilitate the early detection and treatment of cancer. Nanocarriers are a group of nano-sized vehicles devised to deliver loaded bioactive(s) to target malignant cells, tissues or organs and have provided remarkably improved therapeutic efficacy for cancer therapy. A variety of nanocarriers(s)such as dendrimers, nanoparticle(s), liposomes, micelles, gold carriers, solid lipid carriers, carbon nanotubes, magnetic carriers and viral carriers, incorporating cytotoxic therapeutics have emerged as striking delivery system(s) in the area of cancer research. To improve the biological distribution of therapeutic bioactive(s), some modified carriers have designed to accommodate efficient loading and release of drugs with a wide spectrum of chemical and physical characteristics. In addition, physicochemical modifications of the surface or interior of NPs allow for modulation of pharmacokinetic features as per clinical demands. However, cancer-related mortality still remains high and drug-mediated cancer treatment is a challenging research field despite the remarkable advances in targeting efficiency and therapeutic efficacy demonstrated and resulted from NPs.This review focuses primarily on current nano drug delivery systems for cancer therapy. The current challenges related to therapeutic nanomedicines, as well as critical analysis of the different delivery nanoparticles, are also discussed.

Use of preferentially replicating bacteria for the treatment of cancer.

The past several years have seen renewed interest in the treatment of cancer with live microorganisms, based on the observation that some microorganisms display selective replication or preferential accumulation in the tumor microenvironment. Preferential replication offers great potential to amplify the therapeutic effect of the microorganism while sparing normal tissues from toxicity. Much of the current research intended to achieve selective replication within, and lysis of, tumor cells has focused on viruses, but recent observations in murine models with facultative anaerobic bacteria (1), as well as data generated more than 30 years ago with obligate anaerobic bacteria (2), indicate that some bacterial species can also preferentially replicate and accumulate within tumors. In contrast to viruses, the bacteria reside primarily in the extracellular tumor microenvironment (3) and possess certain features that may be advantageous in the treatment of cancer. Thus, bacteria are motile, which facilitates their spread throughout the tumor and can help target systemic disease. Because of their large genome size, bacteria can readily express multiple therapeutic transgenes, such as cytokines or pro–drug-converting enzymes, and their spread can be controlled with antibiotics if necessary.