Publications by authors named "Jun'ai Zhang"

Tuberculosis drug resistance contributes to the spread of tuberculosis. Immunotherapy is an effective strategy for treating tuberculosis, with the regulation of macrophage-mediated anti-tuberculosis immunity being crucial. Norcantharidin (NCTD), a drug used in tumor immunotherapy, has significant immunomodulatory effects.

View Article and Find Full Text PDF
Article Synopsis
  • * Researchers found elevated levels of IL-37b and IL-37b-producing monocytes in DF patients, primarily produced by monocytes rather than lymphocytes, alongside increased levels of other cytokines like IL-6 and IL-10.
  • * The study highlights a negative correlation between IL-37b-producing monocytes and serum IFN-α levels and platelet counts, suggesting complex interactions in the immune response of DF patients.
View Article and Find Full Text PDF

The role of molecular aggregation was investigated on physicochemical and macromolecular properties of tamarind kernel polysaccharides via partial degalactosylation (TKPs vs. CTKPs). From the results, their main structural characteristics remained when partially degalactosylated, while primary aggregates as fundamental solution behavior were dynamically converted into higher aggregated forms.

View Article and Find Full Text PDF

In this study, two acidic Biluochun Tea polysaccharides (BTP-A and BTP-A) were investigated comparatively, which mainly consisted of Rha, Ara, Gal and GalA, possibly suggesting their pectic nature. Structurally, their galacturonan backbones composed of →4)-α-D-GalpA-(1→ and →2)-α-L-Rhap-(1→ were revealed similar, while Ara- and Gal-based branches attached to the O-2 of →2)-α-L-Rhap-(1→ were in distinctive types, proportions, extensibilities and branching degrees. This could lead to their different macromolecular characteristics, where BTP-A with higher M presented a more hyper-branched chain conformation and relatively higher structural flexibility/compactness, thereby resulting in a lower exclusion effect and an insufficient hydrodynamic volume.

View Article and Find Full Text PDF

The molecular aggregation of a galactomannan (NSAP-25) from Sophora alopecuroides L. seeds was investigated, where three polydisperse systems were confirmed during particle size analysis, indicating existence of different aggregates composed of random coil chains revealed by circular dichroism. Morphologically, NSAP-25 aggregate of various sizes (200-1200 nm) was possibly multi-stranded and formed by ellipsoid-like particles (20-60 nm) composed of compact coil chain, exhibiting extended amorphous structure with chain-like branches intertwined.

View Article and Find Full Text PDF

Objectives: Genetic and epigenetic mechanisms regulate antimicrobial immunity against (Mtb) infection.

Methods: The present study assessed circular RNA TRAPPC6B (circTRAPPC6B) for antimicrobial immune functions and defined mechanisms wherein circTRAPPC6B regulates Mtb growth, autophagy and microRNA in macrophages.

Results: The Mtb infection of monocytes/macrophages resulted in a significantly decreased level of circTRAPPC6B that inhibited intracellular Mtb growth in macrophages.

View Article and Find Full Text PDF

Subsequently to the publication of the above paper, the authors have drawn to our attention that, owing to errors made in the compilation of the images in Fig. 6, the images shown in Fig. 6A‑C in the article were selected incorrectly (essentially, the images shown in Fig.

View Article and Find Full Text PDF

IL-35 is an anti-inflammatory cytokine and is thought to be produced by regulatory T (Treg) cells. A previous study found that IL-35 was upregulated in the serum of patients with active tuberculosis (ATB), and IL-35-producing B cells infiltrated to tuberculous granuloma of patients with ATB. Purified B cells from such patients generated more IL-35 after stimulation by antigens of Mycobacterium tuberculosis and secreted more IL-10.

View Article and Find Full Text PDF

Numerous studies have suggested that circular RNAs (circRNAs), a type of non‑coding RNA lacking 5'‑caps and 3'‑poly(A) tails, are involved in the biological processes of various human diseases. However, little is known about their functions and diagnostic value in active pulmonary tuberculosis (APTB). The aim of the present study was to examine whether hsa_circ_0001380 is able to serve as a diagnostic biomarker for patients with APTB.

View Article and Find Full Text PDF

Little is known about how tuberculosis (TB) impairs dendritic cell (DC) function and anti-TB immune responses. We previously showed that the B and T lymphocyte attenuator (BTLA), an immune inhibitory receptor, is involved in TB pathogenesis. Here, we examined whether BTLA expression in TB affects phenotypic and functional aspects of DCs.

View Article and Find Full Text PDF

Regulatory B cells (Bregs) have critical roles as a negative regulator of immunity, mainly due to the fact that it secrets high a level of interleukin 10 (IL-10). Recently, a new subset of Bregs was identified as a key source of IL-35, which is an immunosuppressive cytokine and conventionally thought to be secreted by regulatory T cells (Tregs). Our previous study showed that the level of IL-35 in serum was elevated in the patients with active tuberculosis (ATB).

View Article and Find Full Text PDF

B cell activating factor (BAFF), a member of the tumor necrosis factor family, is a key cytokine for B cell survival, a function that is essential for B cell maturation and memory. The expression levels of BAFF and its potential contribution to B cell maturation remain elusive in patients with tuberculous pleural effusion (TPE). The present study enrolled 40 healthy controls (HC) and 45 TPE patients, and investigated the levels of BAFF in the plasma and pleural effusion.

View Article and Find Full Text PDF

Dendritic cell (DC) plays an important role in the immune response against pulmonary tuberculosis. However, the phenotypic profile of DC subsets in peripheral blood in individuals with active pulmonary tuberculosis (APT) is still inconclusive. Here, we demonstrated that the absolute numbers of total DC (tDC), myeloid DC (mDC) and plasmacytoid DC (pDC) in individuals with APT were decreased compared to healthy controls (HCs).

View Article and Find Full Text PDF

It has been reported that circular RNA (circRNA) is associated with human cancer. However, few studies have been reported in active pulmonary tuberculosis (APTB). The global circRNA expression was detected in the peripheral blood mononuclear cells (PBMCs) of APTB patients (n=5) and health controls (HC) (n=5) by using high-throughput sequencing.

View Article and Find Full Text PDF

The codelivery of drug and gene is a promising method for cancer treatment. In our previous works, we prepared a cationic micelles based on chitosan and poly-(N-3-carbobenzyloxylysine) (CS-g-PZLL), but transfection ratio of CS-g-PZLL to Hela cell was low. Herein, to improve the transfection efficiency of CS-g-PZLL, curcumin was loaded in the CS-g-PZLL micelle.

View Article and Find Full Text PDF

IL-37 has been described as a natural inhibitor of immune responses. Monoclonal antibody (mAb) against human IL-37b with high affinity and specificity can serve as a molecular probe to detect IL-37 and study IL-37 functions, mechanisms and related signal pathways in inflammatory diseases. However, there are very few such mAbs against human IL-37 commercially available so far.

View Article and Find Full Text PDF

Despite past extensive studies on B and T lymphocyte attenuator (BTLA)-mediated negative regulation of T cell activation, the role of BTLA in antigen presenting cells (APCs) in patients with active pulmonary tuberculosis (ATB) remains poorly understood. Here, we demonstrate that BTLA expression on CD11c APCs increased in patients with ATB. Particularly, BTLA expression in CD11c APCs was likely associated with the attenuated stimulatory capacity on T cells (especially CD8+ T cell) proliferation.

View Article and Find Full Text PDF
Article Synopsis
  • The role of human IL-37 in infections, particularly tuberculosis (TB), is not well understood, and its sources and effects on immune responses in TB patients haven't been thoroughly studied.
  • This study found that IL-37b-producing monocytes were linked to higher levels of IL-37b in the plasma of TB patients, especially in more severe cases of TB.
  • Additionally, TB-infected monocytes showed increased production of IL-37b upon re-infection with mycobacteria, suggesting that these monocytes are more effective at producing IL-37b compared to pro-inflammatory cytokines during such infections.
View Article and Find Full Text PDF

In the present study, we aimed to investigate the effects of CC chemokine ligand 22 (CCL22) and interleukin-37 (IL-37) on the proliferation and epithelial-mesenchymal transition (EMT) of non-small cell lung cancer (NSCLC) A549 cells. pDsRed-CCL22 and pEGFP-IL-37 plasmids were constructed. A549 cells were divided into six groups: the control, the pDsRed-N1 blank plasmid, the pEGFP-C1 blank plasmid, the pDsRed-CCL22 plasmid, the pEGFP‑IL-37 plasmid and the pDsRed-CCL22 + pEGFP-IL-37 plasmid group.

View Article and Find Full Text PDF

Despite the recent appreciation of interleukin 35 (IL-35) function in inflammatory diseases, little is known for IL-35 response in patients with active tuberculosis (ATB). In the current study, we demonstrated that ATB patients exhibited increases in serum IL-35 and in mRNA expression of both subunits of IL-35 (p35 and EBI3) in white blood cells and peripheral blood mononuclear cells. Consistently, anti-TB drug treatment led to reduction in serum IL-35 level and p35 or EBI3 expression.

View Article and Find Full Text PDF

Recent studies suggest that tumor-associated macrophage-produced IL-6 is an important mediator within the tumor microenvironment that promotes tumor growth. The activation of IL-6/STAT3 axis has been associated with chemoresistance and poor prognosis of a variety of cancers including colorectal carcinoma and thus serves as a potential immunotherapeutic target for cancer treatment. However, it is not fully understood whether anticytokine therapy could reverse chemosensitivity and enhance the suppressive effect of chemotherapy on tumor growth.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigated the role of HMGB1 in patients with active pulmonary tuberculosis (APTB) by measuring its levels in plasma and sputum, along with various inflammatory cytokines and immune cells.
  • Results showed that APTB patients had significantly higher levels of HMGB1 and cytokines (IL-6, IL-10, and TNF-α) compared to healthy volunteers, indicating an association with inflammation.
  • The findings suggest that HMGB1 could serve as a potential biomarker for diagnosing and predicting the prognosis of APTB, reflecting the inflammatory state of monocytes in these patients.
View Article and Find Full Text PDF

Ulcerative colitis (UC) is an inflammatory bowel disease, and its pathogenesis involves a variety of genetic, environmental, and immunological factors such as T helper cells and their secreted cytokines. B and T lymphocyte attenuator (BTLA) is an immunoregulatory receptor that has a strong suppressive effect on T-cell function. However the role of BTLA in UC remains poorly understood.

View Article and Find Full Text PDF

Despite past extensive studies, the role of B and T lymphocyte attenuator (BTLA) in αβ T cells in patients with active pulmonary tuberculosis (ATB) remains poorly understood. Here we demonstrate that BTLA expression on αβ T cells is decreased in patients with M. tuberculosis (Mtb) infection.

View Article and Find Full Text PDF
Article Synopsis
  • The role of Interleukin (IL)-35 in colorectal cancer (CRC) progression and prognosis is not well understood, prompting a study to compare IL-35 levels in CRC patients and healthy controls.
  • The findings reveal that IL-35 is significantly elevated in CRC tissues and correlates with tumor severity and stage; notably, serum levels drop after surgical removal of the tumor.
  • The study suggests IL-35 promotes tumor growth by increasing regulatory T (Treg) cells in CRC patients, indicating its potential as a biomarker for CRC progression and prognosis in clinical practice.
View Article and Find Full Text PDF