The Association Between Temporomandibular-Related Quality of Life and Oral Behaviours: A Cross-Sectional Study in Patients With Temporomandibular Disorders.

Objectives: Oral behaviours (OB) are some oral overuse behaviours which could be observed in patients with temporomandibular disorders (TMD). This study aims to investigate the association between TMD-related quality of life and OB to enhance understanding of these behaviours.

Methods: A total of 319 participants diagnosed with TMD were included in this research.

Targeting Triple-Negative Breast Cancer with Combination Therapy of EGFR CAR T Cells and CDK7 Inhibition.

EGFR-targeted chimeric antigen receptor (CAR) T cells are potent and specific in suppressing the growth of triple-negative breast cancer (TNBC) and . However, in this study, a subset of mice soon acquired resistance, which limits the potential use of EGFR CAR T cells. We aimed to find a way to overcome the observed resistance.

A Cohort Study on Associations between Fundus/intraocular Pressure Abnormality and Medical Check-up Items.

Purpose: To evaluate the associations between medical check-up items (MCI) for fundus and intraocular pressure abnormality (FIPA) diseases in the Department of Health Management Centre, the Fifth Affiliated Hospital of Sun Yat-sen University (DHMC-FHS).

Patients And Methods: Individuals who visited DHMC-FHS and underwent MCI between June 2017 to May 2019 were included, 3237 subjects. A total of 356 participants were diagnosed as FIPA and enrolled.

Quantitative evaluation of protective antibody response induced by hepatitis E vaccine in humans.

Efficacy evaluation through human trials is crucial for advancing a vaccine candidate to clinics. Next-generation sequencing (NGS) can be used to quantify B cell repertoire response and trace antibody lineages during vaccination. Here, we demonstrate this application with a case study of Hecolin®, the licensed vaccine for hepatitis E virus (HEV).

EGFR-targeted CAR-T cells are potent and specific in suppressing triple-negative breast cancer both and .

Objectives: Triple-negative breast cancer (TNBC) is well known for its strong invasiveness, rapid recurrence and poor prognosis. Immunotherapy, including chimeric antigen receptor-modified T (CAR-T) cells, has emerged as a promising tool to treat TNBC. The identification of a specific target tumor antigen and the design of an effective CAR are among the many challenges of CAR-T therapy.

Prolonged suppression of HBV in mice by a novel antibody that targets a unique epitope on hepatitis B surface antigen.

Objective: This study aimed to investigate the therapeutic potential of monoclonal antibody (mAb) against HBV as a novel treatment approach to chronic hepatitis B (CHB) in mouse models.

Methods: Therapeutic effects of mAbs against various epitopes on viral surface protein were evaluated in mice mimicking persistent HBV infection. The immunological mechanisms of mAb-mediated viral clearance were systematically investigated.

[Values of a combination of multiple less invasive or non-invasive examinations in the diagnosis of pediatric sputum-negative pulmonary tuberculosis].

Objective: To study the values of a combination of multiple less invasive or non-invasive examinations including chest computed tomography (CT) scan, purified protein derivative (PPD) test, erythrocyte sedimentation rate (ESR) test, and C-reactive protein (CRP) test in the diagnosis of pediatric sputum-negative pulmonary tuberculosis (TB).

Methods: A retrospective analysis was performed on the clinical data of 269 children with confirmed pulmonary TB. Clinical symptoms and test results were analyzed and compared between the sputum-negative group (161 patients) and the sputum-positive group (108 patients).

[Secretory expression and biological activity analysis of an anti-H5 single-chain antibody from Pichia pastoris].

In our previous study, a panel of 52 broadly cross-reactive H5-specific monoclonal antibodies (MAbs) were generated and characterized. The 13D4, one of these MAbs, has been demonstrated to protect mice against lethal challenge by 4 strains of H5N1 avian influenza virus representing the currently prevailing genetic populations, clades 1, 2.1, 2.

[Identification of peptide mimotopes of an abroad-spectrum neutralizing epitope of highly pathogenic avian influenza hemagglutinin].

A monoclonal antibody (8H5), which showed strong neutralization activity against 33 strains of H5N1 viruses isolated from hosts at various regions from 2002 to 2006, was characterized in our lab recently. This result indicated the presence of highly conserved neutralizing site on hemagglutinin (HA) of various H5N1 subtypes. In the present study, the peptide phage display technique was applied to generate mimotope of the conserved neutralizing epitope recognized by 8H5 mAb.

Isolation of human antibodies against hepatitis E virus from phage display library by immobilized metal affinity chromatography.

Objective: To isolate human antibodies against hepatitis E virus from phage display library by a new method of panning phage antibody library based on immobilized metal affinity chromatography (IMAC).

Methods: Phage antibody library was allowed to mix with hex-His tagged expressed HEV specific antigen, NE2, in solution for adequate binding before affinity resin for hex-His was added. The non-specific phage antibodies were removed by extensive washing and the specific bound phage antibodies could then be eluted to infect TG1 or repeat the binding process for subsequent rounds of purification.

[Preparation and identification of a single-chain antibody fragment against high pathogenic H5N1 avian influenza virus].

Previously, an mAb 10F7 was developed against H5N1 hemagglutinin, which was highly specific to 34 different H5N1 strains and showed good neutralizing activity. In the present study, the single-chain fragment of the antibody was cloned into a prokaryotic vector and then expressed in E. coli.

[Construction and preliminary application of a human natural phage antibody library with diversity].

Aim: To construct a human natural phage single-chain antibody (scFv) library with diversity.

Methods: V(H) and V(L) genes were amplified by RT-PCR and hemi-PCR from peripheral blood lymphocytes of healthy persons. The V genes were assembled to form scFv by overlap PCR and cloned into phagemid pCANTAB-5E, and then transformed into E.

[Preliminary study on the conditions of solid-phase screening phage antibody library].

Aim: To explore the conditions of solid-phase screening phage antibody library and to provide the experimental basis for the design of screening project.

Methods: Diverse antibodies including HEV NE2-specific and non-specific humanized phage antibodies were used to study the screening conditions, such as the binding time of phage antibodies to antigen, the concentration of coating antigen, the washing times and elution method.

Results: The best binding time of positive phage antibody to antigen was 1 min.

[Selection of a peptide mimic the neutralization epitope of hepatitis E virus with phage peptide display technology].

Hepatitis E is an acute hepatitis casused by hepatitis E virus (HEV) in developing countries, where it occurs as cases sporadic and in epidemics form. The causative agent, hepatitis E virus, is transmitted primarily by the fecal-oral route. HEV is icosahedron non-enveloped virus, and its genome is a single-stranded, positive-sense, 3'-polyadenylated RNA about 7.

[Orange fluorescent protein--modification of green fluorescent protein GFPxm].

Recently, we have reported a new gfp gene isolated from Aequorea macrodactyla. The protein purified from expressed E. coli exhibited an excitation peak at 476 nm and an emission peak at 496 nm.

[Construction and expression of single-chain antibody of neutralizing monoclonal antibody 13D8 against hepatitis E virus].

Aim: To weaken the immunogenicity of the neutralizing monoclonal antibody (mAb) 13D8 against hepatitis E virus and express its scFv.

Methods: The V(L) and V(H) genes were cloned by RT-PCR from hybridoma cells producing mouse mAb. And then V(H)-linker-V(L) fragment (scFv) was constructed and cloned into vector pTO-T7.

[Expression and bioactivity analysis of the fusion protein GFP-V(L) of the neutralizing monoclonal antibody MA18/7 against HBV].

Aim: To express the fusion protein of enhanced green fluorescent protein (EGFP) with the light chain variable domain of the neutralizing monoclonal antibody MA18/7 (mAb) against hepatitis B virus in E.coli, and determine its bioactivity.

Methods: The EGFP gene was cloned into vector pTO-T7 to construct an expression vector.

Selection of a peptide mimicking neutralization epitope of hepatitis E virus with phage peptide display technology.

Aim: To select the peptide mimicking the neutralization epitope of hepatitis E virus which bound to non-type-specific and conformational monoclonal antibodies (mAbs) 8C11 and 8H3 fromed 7-peptide phage display library, and expressed the peptide recombinant with HBcAg in E.coli, and to observe whether the recombinant HBcAg could still form virus like particle (VLP) and to test the activation of the recombinant polyprotein and chemo-synthesized peptide that was selected by mAb 8H3.

Methods: 8C11 and 8H3 were used to screen for binding peptides through a 7-peptide phage display library.

Bioluminescence of Aequorea macrodactyla, a common jellyfish species in the East China Sea.

Studies of the bioluminescent mechanisms of jellyfish have been mainly confined to one species, Aequorea victoria. We describe the luminescent system of another species, Aequorea macrodactyla, which is commonly found in the warmer waters on the coastal region of East China Sea. The luminescent system of this species consists of a green fluorescent protein (GFP) and one or more aequorins.

Expression of ORF2 partial gene of hepatitis E virus in tomatoes and immunoactivity of expression products.

Aim: To transfer hepatitis E virus (HEV) ORF2 partial gene to tomato plants, to investigate its expression in transformants and the immunoactivity of expression products, and to explore the feasibility of developing a new type of plant-derived HEV oral vaccine.

Methods: Plant binary expression vector p1301E2, carrying a fragment of HEV open reading frame-2 (named HEV-E2), was constructed by linking the fragment to a constitutive CaMV35s promoter and nos terminator, then directly introduced into Agrobacterium tumefaciens EHA105. With leaf-disc method, tomato plants medicated by EHA105 were transformed and hygromycin-resistant plantlets were obtained in selective medium containing hygromycin.