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Publications (32)
Detection of viable viruses in the air is critical in order to determine the level of risk associated with the airborne diffusion of viruses. Different methods have been developed for the isolation, purification, and detection of viable airborne viruses, but they require an extensive processing time and often present limitations including low physi...
Screening of primary patient acute myeloid leukemia (AML) cells is challenging based on intrinsic characteristics of human AML disease and patient-specific conditions required to sustain AML cells in culture. This is further complicated by inter- and intra-patient heterogeneity, and "contaminating" normal cells devoid of molecular AML mutations. De...
The global pandemic has significantly increased the demand for personal protective equipment (PPE). The antimicrobial coating has been broadly applied to PPE to improve its prevention capability, especially after prolonged usage. However, antimicrobial coating by traditional methods, such as chemical vapor deposition, spraying, and slurry coating,...
Built environments play a key role in the transmission of infectious diseases. Ventilation rates, air temperature, and humidity affect airborne transmission while cleaning protocols, material properties and light exposure can influence viability of pathogens on surfaces. We investigated how indoor daylight intensity and spectrum through electrochro...
Application of the CRISPR/Cas9 system to knock in fluorescent proteins to endogenous genes of interest in human pluripotent stem cells (hPSCs) has the potential to facilitate hPSC-based disease modeling, drug screening, and optimization of transplantation therapy. To evaluate the capability of fluorescent reporter hPSC lines for high-content screen...
Built environments play a key role in the transmission of infectious diseases. Ventilation rates, air temperature and humidity affect airborne transmission while cleaning protocols, material properties and light exposure can influence viability of pathogens on surfaces. We investigated how indoor daylight intensity and spectrum through electrochrom...
Natural products (NPs) encompass a rich source of bioactive chemical entities. Here, we used human cancer stem cells (CSCs) in a chemical genomics campaign with NP chemical space to interrogate extracts from diverse strains of actinomycete for anti-cancer properties. We identified a compound (McM25044) capable of selectively inhibiting human CSC fu...
Chemotherapy-induced peripheral neuropathy (PN) is a disorder damaging the peripheral nervous system (PNS) and represents one of the most common side effects of chemotherapy, negatively impacting the quality of life of patients to the extent of withdrawing life-saving chemotherapy dose or duration. Unfortunately, the pathophysiological effects of P...
Mammalian skeletal muscles contain a number of heterogeneous cell populations. Our previous study characterized a unique population of myogenic lineage stem cells that can be isolated from adult mammalian skeletal muscles upon injury. These injury-induced muscle-derived stem cell-like cells (iMuSCs) displayed a multipotent state with sensitiveness...
Tissue engineering is an emerging strategy for repairing damaged tissues or organs. The current study explored using decellularized rat diaphragm scaffolds combined with human amniotic fluid-derived multipotent stromal cells (hAFMSC) to provide a scaffold, stem cell construct that would allow structural barrier function during tissue ingrowth/regen...
We recently discovered a novel population of stem cells from the injured murine skeletal muscle. These injury induced muscle-derived stem cell-like cells (iMuSCs) are partially reprogrammed from differentiated myogenic cells and display a pluripotent-like state. The iMuSCs exhibit stem cell properties including the ability to differentiate into mul...
Myoblast transplantation (MT) is a method to introduce healthy genes into abnormal skeletal muscle. It has been considered as a therapeutic modality in the last few decades for diseases such as Duchenne Muscular Dystrophy (DMD). However, challenges including cell death and poor graft engraftment have limited its application. The current experiment...
Regenerative medicine with the promise of complete organ restoration could change the treatment paradigm for various degenerative disorders. In order to develop successful, safe and efficient regenerative therapies, appropriate amount of pluripotent autologous cells are desired. Pluripotent stem cell lines, such as embryonic stem cells (ESCs) and i...
“Omics” technologies have facilitated significant advances in the understanding of toxicity mechanisms in complex biological systems. In this chapter we discuss the most important “omics” technologies and how they are currently applied in the field of in vitro toxicology. For each technology, advantages, limitations, and developmental needs are add...
Immune privilege as an active defensive mechanism guards cells and tissues against foreign antigens. Developing tumors and adult stem cells are believed to be immune privileged, since they have the ability to avoid rejection after implantation. Allograft rejection of transplanted tissues and organs occurs because of allelic differences between graf...
The present review assesses the current status of in vitro tests based on human pluripotent stem cell-derived toxicologically relevant target cells. The majority of the evaluated test systems are in the phase of test development. In particular the success rates of differentiation protocols and their reproducibility are varying depending on differen...
Developmental neurotoxicity (DNT) and many forms of reproductive toxicity (RT) often manifest themselves in functional deficits that are not necessarily based on cell death, but rather on minor changes relating to cell differentiation or communication. The fields of DNT/RT would greatly benefit from in vitro tests that allow the identification of t...
Traditional approaches in evaluating the hazard of drug candidates on the developing offspring are often time-consuming and cost-intensive. Moreover, variations in the toxicological response of different animal species to the tested substance cause severe problems when extrapolating safety dosages for humans. Therefore, more predictive and relevant...
MicroRNAs (miRNA) are a recently recognised class of small, non-coding RNAs involved in the post-transcriptional regulation of gene expression and with crucial implication for mammalian development. In particular, they play key roles in neuronal development, from early neurogenesis to neuronal differentiation and synaptic development, and also in i...
Chemicals produced by various industrial sectors such as drugs, cosmetics, agrochemicals and industrial chemicals are obliged to undergo a rigorous safety assessment before their entry into the market. Today the standard information requirements providing the necessary details on the toxicity of the individual compounds are mainly derived from test...
Transporter mediated drug-drug interactions (tDDI) mediated by ABCB1 have been shown to be clinically relevant. Hence, the assessment of the ABCB1 tDDI potential early in the drug development process has gained interest. We have evaluated the Calcein assay as a means of assessing the ABCB1 tDDI that is amenable to high throughout and compared it wi...
Various European Union (EU) legislations request the use of in vitro tests for toxicological evaluations in order to increase the safety of consumer and patients but also to reduce the number vertebrates. The review provides a brief overview on EU legislations in place but without further interpretation. At present several ongoing EU projects addre...
Reefs of drug development, the drug-drug interactions, are not limited to metabolic processes but can frequently be mediated by uptake or efflux transporter effects. The FDA recommended assay for screening drug-transporter interactions (DTI) is the monolayer efflux assay, which is reported to be prone to fail high permeability substrates (Polli 200...
Questions
Question (1)
I am differentiating murine muscle-derived stem cells into neural lineages according to standard protocols. I coated the dishes/wells with Ply-L-ornithine and Laminin. After plating the cells, they attach really fast and nicely. However, from the second day on, they start to detach and form floating neurospheres. Any idea why it is happening like this? Any suggestion for a protocol and coating method which may work?
