Publications by authors named "Qian Shen"

Pancreatic ductal adenocarcinoma (PDAC) represents 90 % of pancreatic cancers and shows limited response to immune therapy owing to the highly immunosuppressive tumor microenvironment (TME). Cytokine-encoded mRNA therapy demonstrates a great promise in converting "cold" tumors into "hot" ones, while it is typically administered through intratumoral injection and applicable only to superficial tumors, which limites their application in PDAC. In this study, we design and develop a lipid nanoparticle (LNP) delivery system capable of targeting pancreatic tissue via intraperitoneal (I.

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Non-interferometric synthetic aperture imaging (SAI) shows significant potential in Earth observation, astronomy, and remote sensing. However, these methods often involve time-consuming processes for wave field acquisition and iterative image reconstruction. In this Letter, we present a non-iterative far-field synthetic aperture imaging method, macroscopic space-domain Kramers-Kronig relations synthetic aperture imaging (MSKR-SAI).

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Background And Hypothesis: Primary hyperoxaluria (PH) is a rare disorder with significant morbidity and mortality if left untreated. Given the rarity, global inequities in diagnostics and treatment are expected. Recently introduced RNA interference therapeutics (RNAi) have dramatically changed the outcome for PH patients, potentially disproportionately affecting low-resource regions.

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Traditional non-interferometric quantitative phase imaging (QPI) methods often face challenges in realizing rapid and accurate imaging of large-phase samples, mainly due to slow convergence and dependence on object approximation models. In this Letter, we propose a new, to the best of our knowledge, non-interferometric QPI approach that leverages iterative Kramers-Kronig (KK) relations, named iKK-QPI, to achieve high-accuracy quantitative measurement of objects with large-phase values. In the current KK relations reconstruction framework, we impose real-part constraints on the cepstrum, breaking the restriction of weak scattering condition.

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Boron (B) deficiency and copper (Cu) excess are common problems in citrus orchard soils. Citrus sinensis seedlings were exposed to 25 (B25) or 2.5 (B2.

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Mechanochemistry refers to chemical reactions induced by mechanical forces. Due to different reaction mechanisms, products obtained through mechanochemistry can be distinct from those produced by thermochemistry and photochemistry. Scanning probe microscopy is a powerful tool for studying single-molecule mechanochemical processes.

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Background: Pulmonary nuclear protein in testis (NUT) carcinoma is a rare and aggressive malignancy that often exhibits clinical and pathological features overlapping with other thoracic malignancies, posing significant challenges for accurate diagnosis and leading to poor treatment outcomes.

Method: We conducted a retrospective analysis of five patients diagnosed with pulmonary NUT carcinoma between 2020 and 2023. Comprehensive clinical, imaging, histopathological, and molecular data and survival outcomes were collected.

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Purpose: Rituximab has proven efficacy in children with idiopathic nephrotic syndrome (INS). However, vast majority of children inevitably experience relapse with B-cell repletion, necessitating repeat course of rituximab, which may increase the risk of adverse effects. The timing of additional dosing and optional dosing regimen of rituximab in pediatric patients with INS have yet to be determined.

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Chemotherapy remains the primary treatment modality for breast cancer (BCa) patients. However, chemoresistance commonly arises in clinical settings, contributing to poor prognosis. The development of chemoresistance is a dynamic and complex process involving the activation of oncogenes and inactivation of tumor suppressor genes.

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The clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 system has revolutionized targeted mutagenesis, but screening for mutations in large sample pools can be time-consuming and costly. We present an efficient and cost-effective polymerase chain reaction (PCR)-based strategy for identifying edited mutants in the T generation. Unlike previous methods, our approach addresses the challenges of large progeny populations by using T generation sequencing results for genotype prediction.

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Chirality induced spin selectivity (CISS) effect implies the relationship between chirality and magnetism, attracting extensive attention in the fields of physics, chemistry and biology. Since it was first discovered with photoemission method in 1999, the CISS effect has been investigated and measured by a variety of methods. Among different means of measurements, scanning probe microscopy (SPM) as a powerful tool to explore the CISS effect, can directly measure and present the spin filtering property of chiral molecules in electron transport.

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Objective: To explore the efficacy of initial treatment of newly diagnosed childhood-onset lupus nephritis (cLN) with combination of belimumab and either cyclophosphamide, mycophenolate mofetil, tacrolimus or multitargeted therapy.

Methods: A historical control study was conducted on children aged 5-17 years with newly diagnosed cLN. All patients recruited met the 2012 Systemic Lupus International Collaborating Clinics and/or 2019 European League Against Rheumatism/American College of Rheumatology classification criteria for SLE, and the 2003 International Society of Nephrology/Renal Pathology Society histopathological criteria for LN.

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General anesthesia has been widely used in surgical procedures. Propofol and isoflurane are the most commonly used injectable and inhaled anesthetics, respectively. The various adverse effects induced by propofol and isoflurane are highly associated with the anesthetic-dependent change of brain activities.

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Introduction: Recent clinical researches have reported that neoadjuvant chemoimmunotherapy (NCIT) significantly improve the pathological complete response (pCR) and major pathological response (MPR) rates. However, surrogate endpoints for survival remains controversy for locally advanced gastric cancer (LAGC) after NCIT.

Methods: A retrospective analysis was performed on 84 patients with LAGC who had undergone NCIT following radical resection in three medical centers in China, between July 2020 and September 2023.

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Article Synopsis
  • - The dimorphic fungus thrives inside host phagocytic cells and scavenges for nutrients, mainly relying on amino acids, particularly for gluconeogenesis.
  • - Growth assays show that the fungus can use most amino acids as nitrogen sources, but efficiently breaks down only specific ones like glutamine and alanine for carbon.
  • - An analysis identified 28 potential amino acid transporters, with three key transporters (Dip5, Gap3, and Gai1) significantly affecting growth on amino acids, yet the fungus remains virulent even without them, suggesting it utilizes different nutrient sources inside phagocytes during infection.
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  • Shaofu Zhuyu decoction is commonly used for gynecological conditions, but its effectiveness in treating endometriosis and the mechanisms behind it needed further investigation.
  • Researchers analyzed its chemical makeup and tested its effects on endometriosis in mice, observing a significant reduction in the weight of ectopic lesions and improved gut microbiome diversity.
  • The treatment also led to lower levels of fibrosis in lesions and changes in specific proteins and metabolic pathways, suggesting that it may alleviate endometriosis through regulating intestinal flora and reducing tissue scarring.
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  • Cold stress significantly affects plant growth, especially for cotton, making it crucial to understand how different varieties respond to this challenge.
  • In a study comparing the cold-tolerant XLZ16 and the cold-sensitive XLZ84, XLZ16 showed better growth, more active antioxidant enzymes, and lower cellular damage during cold stress.
  • Transcriptomic analyses identified 6207 differentially expressed genes, highlighting the importance of hormone signaling and the GhJAZ3 gene, which plays a key role in regulating cold tolerance in cotton.
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  • Hematuria is a common condition in children that can indicate serious kidney disease, particularly type IV collagen-related nephropathy, making early diagnosis crucial.
  • Researchers used a noninvasive method, oral mucosa sampling, to isolate DNA and test for genetic variations linked to hematuria in children.
  • In a study of 112 patients, 33% had genetic variants, with the highest detection rates among those with a family history or more severe symptoms, highlighting the need for ongoing monitoring and follow-up.
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Article Synopsis
  • * Trophoblast surface antigen 2 (TROP-2) is a protein found in low amounts in normal tissues but is overexpressed in many cancers, making it a target for antibody-drug conjugates (ADCs) in cancer treatment.
  • * This study aims to explore how TROP-2 works in treating lung cancer, its relationship to patient prognosis, and the potential future of TROP-2 ADCs for targeted treatment options.
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  • * The study introduces WZ-AChE, a two-photon excited fluorescent probe designed to detect AChE activity with high sensitivity and selectivity, overcoming limitations of current detection methods.
  • * WZ-AChE was successfully used in models of Parkinson's disease and depression, showing increased AChE activity compared to controls, thereby aiding research into the mechanisms of these diseases.
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Ovarian cancer (OC) is one of the deadliest gynecological malignancies in the world and is the leading cause of cancer-related death in women. The complexity and difficult-to-treat nature of OC pose a huge challenge to the treatment of the disease, Therefore, it is critical to find green and sustainable drug treatment options. Natural drugs have wide sources, many targets, and high safety, and are currently recognized as ideal drugs for tumor treatment, has previously been found to have a good effect on controlling tumor progression and reducing the burden of metastasis.

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Background: The bortezomib (BTZ) resistance mechanisms in mantle cell lymphoma (MCL) are complex, involving various genes and signaling pathways. This study used bioinformatical tools to identify and analyze differentially expressed genes (DEGs) associated with BTZ resistance.

Methods: Gene chip datasets containing MCL BTZ-resistant and normal control cohorts (GSE20915 and GSE51371) were selected from the Gene Expression Omnibus (GEO) database.

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Objective: To investigate the ability of intra- and peritumoral radiomics based on three-phase computed tomography (CT) to distinguish between malignant and benign parotid tumors.

Methods: We conducted a retrospective analysis of data from 374 patients with parotid gland tumors, all confirmed by histopathology. A total of 321 patients from Center 1 (January 2014 to January 2023) were randomly divided into the training set and internal testing set at a ratio of 7:3, whereas 53 patients from Center 2 (January 2020 to June 2022) constituted the external testing set.

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Introduction: Blood-brain barrier (BBB) dysfunction occurs in Alzheimer's disease (AD). Yet, the stage at which it appears along the AD time course and whether it contributes to neurodegeneration remain unclear.

Methods: Older adults (61 to 90 years) from cognitively normal (CN) to mildly cognitively impaired (CI), enriched for APOE 𝜀4 and amyloid positivity, underwent dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI) and diffusion MRI to measure BBB permeability and brain microstructure.

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Esophageal cancer (EC), a common type of malignant tumor, ranks as the sixth highest contributor to cancer-related mortality worldwide. Due to the condition that most patients with EC are diagnosed at advanced or metastatic status, the efficacy of conventional treatments including surgery, chemotherapy and radiotherapy is limited, resulting in a dismal 5-year overall survival rate. In recent years, the application of immune checkpoint inhibitors (ICIs) has presented a novel therapeutic avenue for EC patients.

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