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Flow Cytometry of Hematological Malignancies contains an array of graphical outputs produced by the technique in the study of the most (and the least) common diseases. The images included allow you to compare your own results with a third party reference pattern. There is a detailed description of the main leukocyte antigens, together with a description of their distribution amongst normal and abnormal blood cells. The book also provides a comprehensive description of the phenotype of every neoplastic blood disease recorded in the WHO classification system, including all the instructions needed to recognise and classify even the least common entity. Designed to be practical, the book is perfect for quick consultation and is divided into two main sections. Section I deals with the direct object of immunophenotyping, and Section II deals with the ultimate target of the analysis. More than 50 antigens are covered and every antigen is dealt with in three main parts: general features, cytometric features and practical hints. This authoritative and state-of-the-art reference will be invaluable for clinicians directly involved in the diagnosis and analysis of hematological diseases, including hematologists, hematopathologists, oncologists, pathologists and technicians working in diagnostic laboratories.

Microalgae have become a promising novel and sustainable feedstock for meeting the rising demand for food and feed. However, microalgae-based products are currently hindered by high production costs. One major reason for this is that commonly cultivated wildtype strains do not possess the robustness and productivity required for successful industrial production. Several strain improvement technologies have been developed towards creating more stress tolerant and productive strains. While classical methods of forward genetics have been extensively used to determine gene function of randomly generated mutants, reverse genetics has been explored to generate specific mutations and target phenotypes. Site-directed mutagenesis can be accomplished by employing different gene editing tools, which enable the generation of tailor-made genotypes. Nevertheless, strategies promoting the selection of randomly generated mutants avoid the introduction of foreign genetic material. In this paper, we review different microalgal strain improvement approaches and their applications, with a primary focus on random mutagenesis. Current challenges hampering strain improvement, selection, and commercialization will be discussed. The combination of these approaches with high-throughput technologies, such as fluorescence-activated cell sorting, as tools to select the most promising mutants, will also be discussed.

Whole tissue RNASeq is the standard approach for studying gene expression divergence in evolutionary biology and provides a snapshot of the comprehensive transcriptome for a given tissue. However, whole tissues consist of diverse cell types differing in expression profiles, and the cellular composition of these tissues can evolve across species. Here, we investigate the effects of different cellular composition on whole tissue expression profiles. We compared gene expression from whole testes and enriched spermatogenesis populations in two species of house mice, Mus musculus musculus and M. m. domesticus, and their sterile and fertile F1 hybrids, which differ in both cellular composition and regulatory dynamics. We found that cellular composition differences skewed expression profiles and differential gene expression in whole testes samples. Importantly, both approaches were able to detect large-scale patterns such as disrupted X chromosome expression, although whole testes sampling resulted in decreased power to detect differentially expressed genes. We encourage researchers to account for histology in RNASeq and consider methods that reduce sample complexity whenever feasible. Ultimately, we show that differences in cellular composition between tissues can modify expression profiles, potentially altering inferred gene ontological processes, insights into gene network evolution, and processes governing gene expression evolution.

NASH is a chronic liver disease that affects 3%–6% of individuals and requires urgent therapeutic developments. Isolating the key cell types in the liver is a necessary step towards understanding their function and roles in disease pathogenesis. However, traditional isolation methods through gradient centrifugation can only collect one or a few cell types simultaneously and pose technical difficulties when applied to NASH livers. Taking advantage of identified cell surface markers from liver single‐cell RNAseq, here we established the combination of gradient centrifugation and antibody‐based cell sorting techniques to isolate five key liver cell types (hepatocytes, endothelial cells, stellate cells, macrophages and other immune cells) from a single mouse liver. This method yielded high purity of each cell type from healthy and NASH livers. Our five‐in‐one protocol simultaneously isolates key liver cell types with high purity under normal and NASH conditions, enabling for systematic and accurate exploratory experiments such as RNA sequencing.

In humans, the lacrimal gland (LG) is the primary contributor to the aqueous layer of the tear film. Production of tears in insufficient quantity or of inadequate quality may lead to aqueous‐deficiency dry eye (ADDE). Currently there is no cure for ADDE. The development of strategies to reliably isolate LG stem/progenitor cells from the LG tissue brings great promise for the design of cell replacement therapies for patients with ADDE. We analyzed the therapeutic potential of epithelial progenitor cells (EPCPs) isolated from adult wild‐type mouse LGs by transplanting them into the LGs of TSP ‐1−/− mice, which represent a novel mouse model for ADDE. TSP‐1−/− mice are normal at birth but progressively develop a chronic form of ocular surface disease, characterized by deterioration, inflammation, and secretory dysfunction of the lacrimal gland. Our study shows that, among c‐kit‐positive epithelial cell adhesion molecule (EpCAM+) populations sorted from mouse LGs, the c‐kit+dim/EpCAM+/Sca1 − /CD34 − /CD45 − cells have the hallmarks of an epithelial cell progenitor population. Isolated EPCPs express pluripotency factors and markers of the epithelial cell lineage Runx1 and EpCAM, and they form acini and ducts when grown in reaggregated three‐dimensional cultures. Moreover, when transplanted into injured or “diseased” LGs, they engraft into acinar and ductal compartments. EPCP‐injected TSP‐1−/− LGs showed reduction of cell infiltration, differentiation of the donor EPCPs within secretory acini, and substantial improvement in LG structural integrity and function. This study provides the first evidence for the effective use of adult EPCP cell transplantation to rescue LG dysfunction in a model system. Stem Cells Translational Medicine 2017;6:88–98

Environmental DNA (eDNA) metabarcoding typically relies on collecting and characterising a pool of mixed, fragmented DNA from environmental samples for species identification. Here, we introduce environmental metazoan cells (emCells), representing whole individual cells shed by macro‐organisms into aquatic ecosystems, and report on a method to successfully isolate and amplifying short amplicons to determine species identity. Using a custom fish probe and a novel multi‐factor fluorescence‐activated cell sorting (FACS) protocol on mesocosm water samples, we successfully enriched for target emCells, as confirmed by shifts in population density using FACS and imaging flow cytometry. Imaging flow cytometry demonstrated dual nuclear and mitochondrial staining of whole single cells, while multiplexed PCR assays (targeting both mitochondrial and nuclear DNA) confirmed the effective enrichment of fish emCells, with one‐quarter of sorted cells identified as fish. Sequences obtained from isolated emCells matched known species in the mesocosm, validating our approach. Despite efforts to exclude non‐target cells, diverse single‐cell eukaryotes were also recovered, highlighting the need for additional strategies to enrich for target emCells given the abundance and diversity of off‐target particles present in aquatic environments, which will be especially important for real‐world environments. Isolation and analysis of emCells could provide a versatile complementary approach to current eDNA methodologies by providing genomic information that normally requires direct sampling from live organisms. We introduce environmental metazoan cells (emCells) ‐ whole individual cells shed by macro‐organisms into aquatic ecosystems ‐ and present a method to isolate and profile their mitochondrial and nuclear DNA. Using fluorescent activated cell sorting and metabarcoding, we enriched for fish emCells from a mesocosm, demonstrating species detection and genomic profiling at the single‐cell level. This approach complements traditional eDNA methods by enabling individual and population‐level genomic analyses without direct sampling from live organisms.

Purpose Although non‐invasive prenatal testing (NIPT) based on cell‐free DNA (cfDNA) in maternal plasma has been prevailing worldwide, low levels of fetal DNA fraction may lead to false‐negative results. Since fetal cells in maternal blood provide a pure source of fetal genomic DNA, we aimed to establish a workflow to isolate and sequence fetal nucleated red blood cells (fNRBCs) individually as a target for NIPT. Methods Using male‐bearing pregnancy cases, we isolated fNRBCs individually from maternal blood by FACS, and obtained their genomic sequence data through PCR screening with a Y‐chromosome marker and whole‐genome amplification (WGA)‐based whole‐genome sequencing. Results The PCR and WGA efficiencies of fNRBC candidates were consistently lower than those of control cells. Sequencing data analyses revealed that although the majority of the fNRBC candidates were confirmed to be of fetal origin, many of the WGA‐based genomic libraries from fNRBCs were considered to have been amplified from a portion of genomic DNA. Conclusions We established a workflow to isolate and sequence fNRBCs individually. However, our results demonstrated that, to make cell‐based NIPT targeting fNRBCs feasible, cell isolation procedures need to be further refined such that the nuclei of fNRBCs are kept intact.

Background Methamphetamine (Meth) seeking progressively increases after withdrawal (incubation of Meth craving). We previously demonstrated a role of anterior intralaminar nucleus of thalamus (AIT) to dorsomedial striatum (DMS) projections in this incubation. Here, we examined molecular alterations in DMS and AIT neurons activated (identified by neuronal activity marker Fos) during “incubated” Meth‐seeking relapse test after prolonged withdrawal. Methods We trained male rats to self‐administer Meth or saline (control condition) for 10 days (6 hr/day). Using fluorescence‐activated cell sorting, we examined gene expression in Fos‐positive (activated during a 2‐hr relapse test) and Fos‐negative (nonactivated) DMS and AIT neurons. Results In DMS, we found increased mRNA expressions of immediate early genes (IEGs) (Arc, Egr1, Npas4, Fosb), Trkb, glutamate receptors subunits (Gria3, Grin1, Grin2b, Grm1), and epigenetic enzymes (Hdac3, Hdac5, Crebbp) in Fos‐positive neurons, compared with Fos‐negative neurons. In AIT, we found that fewer genes (Egr1, Fosb, TrkB, Grin1, and Hdac5) exhibited increased mRNA expression in Fos‐positive neurons. Unexpectedly, in both brain regions, gene alterations described above also occurred in drug‐naïve saline self‐administration control rats. Conclusions These results demonstrated that transcriptional regulations in Fos‐positive neurons activated during the relapse tests are brain region‐specific but are not uniquely associated with drug exposure during the self‐administration training. We used fluorescence‐activated cell sorting and examined gene alterations in dorsomedial striatum (DMS) and anterior intralaminar nucleus of thalamus (AIT) Fos‐positive neurons activated during relapse tests after 1‐month withdrawal from methamphetamine or saline (control condition) self‐administration. We found that DMS and AIT exhibited distinct gene expression profiles in Fos‐positive neurons, compared with Fos‐negative neurons. However, in both brain regions, gene alterations also occurred in the drug‐naïve saline self‐administration control rats.

This work compiles information on the principles of diagnostic immunochemical methods and the recent advances in this field. It presents an overview of modern techniques for the production of diagnostic antibodies, their modification with the aim of improving their diagnostic potency, the different types of immunochemical detection systems, and the increasing diagnostic applications for human health that include specific disease markers, individualized diagnosis of cancer subtypes, therapeutic and addictive drugs, food residues, and environmental contaminants. A special focus lies in novel developments of immunosensor techniques, promising approaches to miniaturized detection units and the associated microfluidic systems. The trends towards high-throughput systems, multiplexed analysis, and miniaturization of the diagnostic tools are discussed. It is also made evident that progress in the last few years has largely relied on novel chemical approaches.

To advance the utilization of microalgae as a viable feedstock for biodiesel production, the intracellular lipid content of three strains of the marine microalgae Nannochloropsis sp. was enhanced using flow cytometry (FC) coupled with cell sorting. Total lipid content was doubled to 55% (biomass dry weight) in the sorted, daughter cells of Nannochloropsis (strain 47) after consecutive three rounds of cell sorting, and this trait was maintained for approximately 100 subsequent cell generations. In addition, daughter cells had a fatty acid profile similar to that of the parent, wild‐type strain. The study demonstrates that FC coupled with cell sorting is a powerful tool for the enhancement of intracellular lipid content in microalgae exploited for biodiesel feedstock.