Publications by authors named "Qianqian Duan"

African swine fever (ASF) is an acute hemorrhagic disease in pigs caused by the African swine fever virus (ASFV), which has a high mortality rate and brought great damage to global pig farming industry. At present, there is no effective treatment or vaccine to combat ASFV infection, so early detection of ASFV has become particularly important. Therefore, the PDMS/chitosan/MPMs composite film was proposed to detect ASFV P72.

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Background: Intrahepatic cholangiocarcinoma is a malignant tumor that starts from the epithelium of the bile duct and has a poor prognosis. They are characterized by poor response to chemotherapy and lack of effective targeted therapies; thus, therapeutic options are limited.

Case Presentation: A 59-year-old man was admitted to the hospital for a workup of abnormal CA19-9 levels.

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Article Synopsis
  • - Osteoarthritis (OA) is a condition where joint cartilage deteriorates, and high levels of HIF-2α are linked to its worsening. PT2385 can block HIF-2α and slow down OA's advancement, but it faces challenges in cartilage penetration and quick clearance from joints.
  • - PT2385's efficacy is enhanced when delivered through a specially designed system using carbon quantum dots (BCP) that can transport the drug deeper into cartilage and release it based on pH changes.
  • - In laboratory and live experiments, BCP not only effectively delivers PT2385 to where it’s needed, but it also reduces harmful factors in cartilage cells, indicating potential for improved treatment of OA.
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Background: Pancreatic ductal adenocarcinoma (PDAC) often presents with liver or peritoneal metastases at diagnosis. Despite similar treatment approaches, patient outcomes vary between these metastatic sites. To improve targeted therapies for metastatic PDAC, a comprehensive analysis of the genetic profiles and evolutionary patterns at these distinct metastatic locations is essential.

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  • African Swine Fever (ASF) is a serious contagious disease threatening the global meat supply, driving the need for effective detection methods of the ASF virus (ASFV).
  • Researchers developed a flexible magnetoelastic (ME) biosensor using a composite of PDMS, FeSiB, and quantum dots to detect the ASFV P72 protein, which enhances the biosensor's functionality and signal conversion.
  • The ME biosensor demonstrated a broad detection range (10 ng mL to 100 μg mL) with a low detection limit (0.079 ng mL) and showed strong stability, sensitivity, and specificity for early disease detection.
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The modified coconut shell biochars (MCSBCs) were fabricated and their adsorptions for Pb(II) were evaluated, in which waste coconut shell was used as the raw material, both ZnCl and KMnO were applied as the inorganic modifiers. FT-IR spectra, TGA, SEM and BET techniques were utilized to characterize their properties. It was spotted that the thermal stability of UCSBC could arrive at 500 °C.

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  • This study investigates whether injecting miRNA-1 into the joints can slow down the progression of osteoarthritis (OA) in rats by targeting a specific protein called Ihh.
  • Researchers collected knee cells from young rats, treated them with miR-1, and observed changes in various genes related to cartilage health through tests like RT-qPCR.
  • The findings showed that miR-1 injections reduced inflammation and cartilage damage while promoting cartilage growth, suggesting it could be a potential treatment for OA.
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Acoustic kinetic therapy systems that target specific organelles can improve the precision of a sonosensitizer, which is a perfect combination of targeted therapy and sonodynamic therapy (SDT) and plays an important role in current acoustic kinetic therapy. In this study, we loaded PpIX, a sonosensitizer, on targeted-functional carbon dots (CDs) via an amide reaction and then generated the mitochondria-targeted system (Mit-CDs-PpIX) and nucleus-targeted system (Nuc-CDs-PpIX), respectively, to deliver the sonosensitizer. Both systems exhibited minimal cytotoxicity in the absence of ultrasound stimulation.

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Introduction: Patients with histiocytic sarcoma occurring in the central nervous system (CNS) are rare and have a very poor prognosis. The increased use of molecular diagnostic approaches in solid tumors has brought more opportunities for the diagnosis and treatment of central nervous system histiocytic sarcoma (CNSHS).

Case Description: A 9-year-old girl was admitted to the hospital with pain in her head and neck, as well as vomiting.

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At present, preoperative chemotherapy is the standard of care for the neoadjuvant treatment of potentially resectable gastric cancer (GC). However, because the efficacy and prognosis are not ideal, curative effects for this population are unsatisfactory. With the development of immune checkpoint inhibitors, the results of a few encouraging early trials of immunotherapeutic agents as neoadjuvant therapies for resectable GC have been reported.

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Article Synopsis
  • Advances in immune checkpoint inhibitors (ICIs) have shown promise in treating solid tumors like advanced gastric cancer, leading to improved survival rates and safety profiles.
  • There is a growing interest in using ICIs in the neoadjuvant setting, aiming to enhance the body's immune response against tumor cells both at the primary site and any potential micrometastases.
  • Ongoing clinical studies are investigating the effectiveness of ICI treatment alone and in combination with other therapies to optimize outcomes for gastric cancer patients.
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Globally, gastrointestinal cancer is the most widespread neoplastic disease and the primary contributor to cancer-associated fatalities. Gastrointestinal signet ring cell carcinoma (SRCC) exhibits unique distinguishing features in several aspects when compared to adenocarcinomas (ACs). The scarcity of signet ring cell carcinoma has resulted in a heightened significance of related clinical and molecular investigations.

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The impact of Ba-modified peanut shell biochar (Ba-PSB) on Pb(II) removal was studied and BaCl was used as a modifier. It was shown that the PSB obtained at 750 °C had the best adsorption effect, and the Ba-PSB had a larger specific surface area and a good adsorption effect on Pb(II). At pH = 5, concentration was 400 mg/L, time was 14 h, and temperature was 55 °C, the loading amount of black peanut shell biochar (BPSB), red peanut shell biochar (RPSB), Ba-BPSB, and Ba-RPSB reached 128.

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Currently, there is a lack of suitable models for in-vitro studies of malignant melanoma and traditional single cell culture models no longer reproduce tumor structure and physiological complexity well. The tumor microenvironment is closely related to carcinogenesis and it is particularly important to understand how tumor cells interact and communicate with surrounding nonmalignant cells. Three-dimensional (3D) in vitro multicellular culture models can better simulate the tumor microenvironment due to their excellent physicochemical properties.

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Lung Adenosquamous carcinoma (ASC) is a rare histological subtype of lung cancer accounting for 0.4%-4% of all lung cancers. ASC is generally considered to be an aggressive cancer with poor prognosis.

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(fall armyworm, FAW) is one of the most devastating insect pests to corn and soybean production in the Americas and is rapidly expanding its range worldwide. It is known to be hard to control either by chemical insecticide applications or by GM. Although the use of GM traits can be an effective way to control this pest, it is very rare to find native insecticidal proteins that provide the necessary level of FAW control in crop fields where FAW pressure and damage are high.

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Immune checkpoint inhibitors (ICIs) therapy elicits admirable anti-tumor responses across many types of cancer. Growing evidence point to a link to Mediator complex subunit 12 (MED12) and DNA damage repair (DDR) and TGF-β signing, while the clinical data on the association of MED12 and ICIs response are lacking. In this study, clinical and whole-exome sequencing (WES) data from published studies were merged as a WES cohort to explore the association between MED12 mutation (MED12-Mut) and ICIs efficiency across cancers.

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Endochondral bone formation from the growth plate plays a critical role in vertebrate limb development and skeletal homeostasis. Although miR-1 is mainly expressed in the hypertrophic region of the growth plate during this process, its role in the endochondral bone formation is unknown. To elucidate the role of miR-1 in cartilage development, chondrocyte-specific transgenic mice with high expression of miR-1 were generated (Col2a1-Cre-ER-GFP-RFP-miR-1).

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Background: NRAS wildtype melanoma accounts for approximately 80% of melanomas. Previous studies have shown that NRAS wildtype melanoma had higher response rates and better prognoses than NRAS-mutant patients following immunotherapy, while as major actors in tumor cells and tumor microenvironment (TME), the association between NOTCH family genes and response to immunotherapy in NRAS wildtype melanoma remains indistinct.

Objective: We aim to explore whether NOTCH family gene variation is associated with genomic factors in immune checkpoint inhibitor (ICI) response in NRAS wildtype melanoma and with clinical results in these patients.

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Article Synopsis
  • Gastric cancer has a high rate of morbidity and mortality, with low survival rates primarily due to metastasis and drug resistance.
  • Researchers found that A Disintegrin And Metalloprotease 12 (ADAM12) is highly expressed in gastric cancer tissues and present in urine, but its role in cell migration is not fully understood.
  • The study identified that ADAM12S, a specific form of ADAM12, increases the expression of CD146, which enhances the migration of gastric cancer cells, suggesting ADAM12 as a potential target for treatment.
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Introduction: Chronic obstructive pulmonary disease (COPD) and lung cancer often coexist, but its pathophysiology and genomics features are still unclear.

Methods: In this study, we retrospectively collected lung cancer concomitant COPD (COPD-LC) and non-COPD lung cancer (non-COPD-LC) patients, who performed next generation sequencing (NGS) and had clinicopathological information simultaneously. The COPD-LC data from the TCGA cohort were collected to conduct further analysis.

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Background: Tremendous progress has been made in the field of cartilage repair and regeneration, particularly with tissue-engineering approaches. This study aims to estimate the global status and current trends in the field of cartilage tissue engineering.

Methods: Publications from 2011 to 2020 on tissue engineering for cartilage repair and regeneration were retrieved from Web of Science Core Collection database.

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  • PAPPA2 mutation is commonly found in skin cutaneous melanoma (SKCM) and non-small cell lung cancer (NSCLC) and is associated with a stronger anti-tumor immune response, but its effect on immune checkpoint inhibitors (ICIs) is not well understood.
  • Analysis of multiple patient cohorts revealed that those with PAPPA2 mutations (PAPPA2-Mut) showed significantly better progression-free survival (PFS) and objective response rates (ORR) to ICIs compared to those with the normal PAPPA2 gene (PAPPA2-WT).
  • The study also suggests that combining PAPPA2 mutation status with tumor mutational burden (TMB) helps better predict which patients are likely to
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