An Orthogonal CRISPR/dCas12a System for RNA Imaging in Live Cells.

CRISPR/Cas technology has made great progress in the field of live-cell imaging beyond genome editing. However, effective and easy-to-use CRISPR systems for labeling multiple RNAs of interest are still needed. Here, we engineered a CRISPR/dCas12a system that enables the specific recognition of the target RNA under the guidance of a PAM-presenting oligonucleotide (PAMmer) to mimic the PAM recognition mechanism for DNA substrates.

Lenalidomide attenuates IMQ-induced inflammation in a mouse model of psoriasis.

Psoriasis is a type of chronic autoimmune-mediated inflammatory skin condition in which clinical manifestations are characterized by erythema and scaly changes, with complex pathogenesis and ease of relapse, and it is difficult to cure. Lenalidomide (Len) is a structural analog of thalidomide, which belongs to the second generation of immunomodulators and has the functions of tumor killing, immune regulation, anti-angiogenesis and regulation of the myeloma microenvironment. In the current experiment, we investigated the therapeutic effect of transdermal application of Len on the pathological changes of imiquimod (IMQ)-induced skin irritations and inflammation in psoriatic-like mice.

A programmable and sensitive CRISPR/Cas12a-based MicroRNA detection platform combined with hybridization chain reaction.

MicroRNAs (miRNAs) play an essential role in cancer diagnosis and prognosis. Developing a new method for sensitive detection of miRNA is constantly in demand. CRISPR/Cas12a system can nonspecifically cleave single-stranded DNA after specific recognition of target DNA, showing tremendous potential in molecular diagnostics.

Regulation effects of hydrogen sulfide on ascorbate-glutathione cycle in naked oat leaves under saline-alkali stress.

Saline-alkali stress is one of the common abiotic stresses for plants. Hydrogen sulfide (HS), as a gas signal, plays an important role in driving the responses of plants to saline-alkali stress. To explore the regulating effects of HS on the ascorbate (AsA)-glutathione (GSH) cycle in naked oat (Avena nude) under saline-alkali stress, we used sodium hydrogen sulfide (NaHS) as donor of exogenous HS and hydroxylamine (HA) as HS synthesis inhibitor to examine the effects of HS on plant growth, leaf reactive oxygen species, membrane lipid peroxidation, and antioxidants and key enzymes in the AsA-GSH cycle in "Dingyou 9" variety of naked oat under saline-alkali mixed stress.

LncRNA MEG3 suppresses PI3K/AKT/mTOR signalling pathway to enhance autophagy and inhibit inflammation in TNF-α-treated keratinocytes and psoriatic mice.

Background: Psoriasis is a common chronic inflammatory skin disorder that causes patches of thick red skin and silvery scales and affects 1-3% of the population, which reduces patient's quality of life. Understanding the pathogenesis of psoriasis is crucial for developing novel therapeutic strategies.

Methods: HaCaT and NHEK cells were treated with TNF-α in vitro.

The regional distribution of melanosomes in the epidermis affords a localized intensive photoprotection for basal keratinocyte stem cells.

Human skin is a highly efficient self-renewing barrier that is critical to withstanding environmental insults. Undifferentiated keratinocyte stem cells reside in the basal layer of the epidermis and in hair follicles that continuously give rise to progenies ensuring epidermal turnover and renewal. Ultraviolet (UV) radiation is a proven cause of skin keratinocyte cancers, which preferentially occur at sun-exposed areas of the skin.

LncRNA MEG3 influences the proliferation and apoptosis of psoriasis epidermal cells by targeting miR-21/caspase-8.

Background: It was reported that microRNA-21(miR-21) was differentially expressed in the keratinocytes of psoriasis patients, and it may influence the apoptosis and proliferation of cells. The role of lncRNA maternally expressed gene3 (MEG3), a competing endogenous RNAs of miR-21, in the progression of psoriasis remains unclear. We aimed to unfold the influence of MEG3 and miR-21 on the proliferation and apoptosis of psoriasis epidermal cells.

The role of macrophages in the differentiation process of ureteral polyps.

Objective To evaluate the role of macrophage infiltration in the differentiation process of ureteral polyps and cancers. Methods This retrospective immunohistochemical study analysed archival samples of pathologically-confirmed specimens of low- and high-grade ureteral cancer, ureteral papilloma and ureteral polyps. The samples were immunohistochemically stained for cluster of differentiation (CD)4, CD8, CD16, CD25, CD56 and CD68 using immunofluorescence in order to identify different T-lymphocyte populations and macrophages.

HDAC5 Inhibits Hepatic Lipogenic Genes Expression by Attenuating the Transcriptional Activity of Liver X Receptor.

Background/aims: Liver X receptor (LXR), a member of the nuclear receptor superfamily, is known to induce the expression of SREBP-1c and ChREBP, two master regulators of hepatic lipogenesis. Histone deacyetylases (HDACs) have been shown to play critical roles in glucose and lipids metabolism. However, the exact role of HDAC5 in lipogenesis remains elusive.

Asymmetric stem-cell division ensures sustained keratinocyte hyperproliferation in psoriatic skin lesions.

Excessive expansion of the transit-amplifying (TA) cell compartment is a distinct morphological characteristic of psoriatic epidermal hyperplasia. In order to examine the activation of basal stem cells and how they replenish such an enlarged compartment of TA cells in psoriatic epidermis, we utilized a BrdU labeling method to monitor mitotic stem cells in a mouse model of psoriasiform dermatitis, which was induced by imiquimod. Our results showed that perpendicular and parallel cell division characteristics of dividing stem cells existed in the inflamed epidermis.

The technique comparison of brachial plexus blocks by ultrasound guided with blocks by nerve stimulator guided.

Objective: Brachial plexus perineural blocks provide specific analgesia for upper limb surgery. We present our experience with ultrasound-guided supraclavicular brachial plexus perineural blocks for distal upper limb surgery. Although single-injection ultrasound-guided supraclavicular blocks have been reported, little is known about the advantages using this approach compared with nerve stimulator guided.

The multi-lineage differentiation and angiogenesis ability of adipose-derived adult mesenchymal stem cells.

Background: To investigate the in vitro multi-lineage differentiation of adipose-derived adult stem cells and their ability to differentiate into endothelial cells.

Methods: Adipose-derived adult stem cells were isolated for detection of the immune phenotype, cell doubling time, cycle, and induction of endothelial cell differentiation in vitro. The expression of endothelial cell-specific surface markers was measured immunocytochemically.

Efficacy and safety between temozolomide alone and temozolomide-based double therapy for malignant melanoma: a meta-analysis.

Temozolomide (TMZ) has received much attention, notably in the treatment of malignant glioma and malignant melanoma. The objective of this study was to compare the clinical efficacy and safety of TMZ alone and TMZ-based combination drug therapy in patients with melanoma. Using "temozolomide" as a keyword combined with "melanoma" and "randomized controlled trials" as Medical Subject Headings, the following electronic databases were searched: the Cochrane library, MEDLINE, EBSCO, EMBASE, Ovid, cNKI, and cBMDisc.

[Witchcraft medicine and folklore in Wushierbingfang ('Prescriptions for fifty-two diseases')].

One important characteristic of early stage of TCM is the intermixture of witches medicine and folklore. A few witch prescriptions in Wushierbingfang ('Prescriptions for fifty-two diseases') indicated the residual traces of the mixture of witch and medicine in the medical literatures. The witch prescriptions recorded in Wushierbingfang ('Prescriptions for fifty-two diseases') could be divided into supplication, Yu-step, exorcism, Nuo ritual and peach wood charms etc.

[The effect of cold stress on DNA oxidative damage of lung in chicken].

Aim: To explore the influence of cold strss on DNA oxidative damage of lung in chicken.

Methods: Took 15-day-old healthy chicks as the experimental object, carried on the cold stress (12 +/- 1 degrees C) to process. Detected the change of the MDA content, SOD and GSH-Px activity of the lung, and performed KCl-SDS precipitation method and fluorescence detection method to identify the influence of cold strss on DNA-protein crosslinks (DPC) and DNA-DNA crosslinks (DDC) of lung cell in different time.

[Effects of glutamine on the colon of mice subjected to colitis gravis].

Aim: To investigate the effects of glutamine on the colonic mucosa of mice subjected to colitis gravis.

Methods: 64 Kunming mice were divided randomly into 4 groups (n=16): healthy group: animals not subjected to colitis; model group: animals subjected to colitis gravis but without glutamine supplementation; low-Gln group: animals subjected to colitis gravis and with low dose of glutamine supplementation; high-Gln group: animals subjected to colitis gravis and with high dose of glutamine supplementation. Animals belonging to the control, the low-Gln, the high-Gin groups were subjected to coloclysis by HAC to be colitis gravis animals.

[Regulation effect of d-alpha-tocopherol on the expression of hexokinase induced by high glucose in cultured human peritoneal mesothelium cells].

Objective: To investigate the effect of d-alpha-tocopherol on the expression of hexokinase (HK) induced by high glucose in cultured human peritoneal mesothelium cell (HPMC).

Methods: Specimens of human omentum were obtained from consenting patient undergoing elective abdominal surgery. HPMC were isolated and subcultured by enzymatic disaggregation.

[Transgenic wheat (Triticum aestivum L.) with increased resistance to the storage pest obtained by Agrobacterium tumefaciens--mediated].

The transgenic wheat of improved resistance to the storage pest was production. We have introduced the cowpea trypsin inhibitor gene (CpTI) into cultured embryonic callus cells of immature embryos of wheat elite line by Agrobacterium-mediated method. Independent plantlets were obtained from the kanamycin-resistant calli after screening.