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This study explored the trajectory of teacher concept development during collaborative research practice promoted by a university-school partnership teacher development program. Drawing on Vygotsky's and Engeström's notion of concept formation, it examined how a secondary EFL teaching-research officer (TRO) negotiated between scientific and everyday concepts as she co-constructed the research theme "teaching assessment literacy" with mentors and fellow teachers mediated by the program. Multiple sources of data were collected over a span of two years, including six rounds of oral defense and research reporting activities, classroom observations, interviews, journals, and research reports. The analysis showed that the TRO experienced a gradually integrated and transformed path of concept development, and also initiated an expansive learning opportunity for her research participants, triggering collective concept development. While the program played a significant role in providing multi-module facilitating activities, academic-practice joint mentoring and collective scaffolding, more subtle guidance is suggested for the tension-laden process. [ABSTRACT FROM AUTHOR]

Objective: This study investigated the cellular composition of peripheral blood grafts for anti‐thymocyte globulin (ATG)‐based myeloablative haploidentical haematopoietic stem cell transplantation (haplo‐HSCT). Methods: Clinical characteristics were retrospectively evaluated in a training cohort with ATG‐based myeloablative haplo‐HSCT between January 2016 and February 2020 and confirmed in a validation cohort between March 2020 and June 2021. Results: A higher dose of graft CD8+ T cells (≥ 0.85 × 108 kg−1) was significantly improved overall survival (OS; hazard ratio [HR], 1.750; P = 0.002) and disease‐free survival (DFS; HR, 1.751; P < 0.001) in the training cohort, according to multivariate Cox regression analysis. Higher doses of mononuclear cells (MNCs) demonstrated better OS (HR, 1.517; P = 0.038) and DFS (HR, 1.532; P = 0.027). Older patient age (> 46 years), older donor age (≥ 50 years) and a higher refined disease risk index (rDRI) were also related to OS. A graft CD8+ T‐cell risk system based on graft CD8+ T‐cell dose, donor age and rDRI was constructed using a nomogram model after LASSO Cox regression analysis. It showed acceptable discrimination, with a C‐index of 0.62 and 0.63, respectively. Graft CD8+ T‐cell dose was negatively correlated with donor age (P < 0.001) and positively correlated with a higher lymphocyte percentage in the peripheral blood before mobilisation (P < 0.001). Conclusion: A higher CD8+ T‐cell dose in peripheral blood‐derived grafts improves patients' survival with ATG‐based myeloablative haplo‐HSCT. Younger donors with higher lymphocyte percentages improved patients' survival with an intermediate rDRI risk. [ABSTRACT FROM AUTHOR]

Objective: We previously reported an increased expression of microRNA‐155 (miR‐155) in the blood monocytes of patients with rheumatoid arthritis (RA) that could be responsible for impaired monocyte polarization to anti‐inflammatory M2‐like macrophages. In this study, we employed two preclinical models of RA, collagen‐induced arthritis and K/BxN serum transfer arthritis, to examine the therapeutic potential of antagomiR‐155‐5p entrapped within PEGylated (polyethylene glycol [PEG]) liposomes in resolution of arthritis and repolarization of monocytes towards the anti‐inflammatory M2 phenotype. Methods: AntagomiR‐155‐5p or antagomiR‐control were encapsulated in PEG liposomes of 100 nm in size and −10 mV in zeta potential with high antagomiR loading efficiency (above 80%). Mice were injected intravenously with 1.5 nmol/100 μL PEG liposomes containing antagomiR‐155‐5p or control after the induction of arthritis. Results: We demonstrated the biodistribution of fluorescently tagged PEG liposomes to inflamed joints one hour after the injection of fluorescently tagged PEG liposomes, as well as the liver's subsequent accumulation after 48 hours, indicative of hepatic clearance, in mice with arthritis. The injection of PEG liposomes containing antagomiR‐155‐5p decreased arthritis score and paw swelling compared with PEG liposomes containing antagomiR‐control or the systemic delivery of free antagomiR‐155‐5p. Moreover, treatment with PEG liposomes containing antagomiR‐155‐5p led to the restoration of bone marrow monocyte defects in anti‐inflammatory macrophage differentiation without any significant functional change in other immune cells, including splenic B and T cells. Conclusion: The injection of antagomiR‐155‐5p encapsulated in PEG liposomes allows the delivery of small RNA to monocytes and macrophages and reduces joint inflammation in murine models of RA, providing a promising strategy in human disease. [ABSTRACT FROM AUTHOR]