Article
Biochemical Research Methods
Junyang Wang, Zheng Liu, Ying Li, Chuanyu Yang, Xinyue Ma, Hongxia Li, Chunyan Sun
Summary: A simple signal-on fluorescence strategy for lead ion detection was established based on a DNAzyme-induced catalytic hairpin assembly. The method showed good detection performance within a concentration range of 0.5-1000 nM and could be applied to real samples.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Seokjoon Kim, Ki Soo Park
Summary: Researchers have proposed a new method for nuclear staining using DNA-templated copper nanoparticles, which offers highly specific and cost-effective staining of the nucleus compared to commercial dyes. This method eliminates nonspecific signals in the cytoplasm caused by RNA and mitochondrial DNA, while also being compatible with other fluorescence-labeling techniques, showing promise as a powerful tool for cell imaging.
Article
Multidisciplinary Sciences
Kui Xiao, Niyuan Zhang, Feifei Li, Dayong Hou, Xiaoyi Zhai, Wanhai Xu, Gelin Wang, Hao Wang, Liang Zhao
Summary: Two hypercarbon-centered gold(I) cluster prodrugs have been designed to induce ferroptosis of cancer cells, showing anti-tumor activity in preclinical bladder cancer models. Medicinal applications of gold complexes have recently attracted attention due to their innovative antitumor mechanisms.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Laura Perez-Garrido, Mariano Ortega-Munoz, Fernando Hernandez-Mateo, F. Javier Lopez-Jaramillo, Francisco Santoyo-Gonzalez
Summary: Selenium (Se) is a dual-faced element with both antioxidant and pro-oxidant activities. Selenium nanoparticles are of great interest but their preparation for biomedical applications is not easy. Acid anhydride-coated carbon dots (AACD) are proposed as a platform for chemically defined Se nanoparticles. The resulting CD-SeCN nanoparticles exhibit tunable hydrosolubility and show potential as anticancer agents with differential cytotoxicity based on cellular glutathione content.
Article
Chemistry, Physical
Laura Perez-Garrido, Mariano Ortega-Munoz, Fernando Hernandez-Mateo, F. Javier Lopez-Jaramillo, Francisco Santoyo-Gonzalez
Summary: Selenium (Se) has both antioxidant and pro-oxidant activity, and its biological effect depends on dose and speciation. Acid anhydride-coated carbon dots (AA-CD) can be used as a platform for preparing nanoparticles containing chemically defined Se. These nanoparticles show tunable hydrosolubility and exhibit glutathione peroxidase-like activity and cytotoxicity. The toxicity of the nanoparticles depends on dose, time, and intracellular glutathione (GSH) content, and is neutralized over time.
Article
Chemistry, Analytical
Pengbo Zhang, Ke Qin, Anand Lopez, Zhengping Li, Juewen Liu
Summary: In this study, a cationic conjugated polymer (CCP)-based binding assay was developed for aptamer binding. The conformational change of aptamer after binding with a target was reflected by the fluorescence change of the CCP. Four aptamers for different targets were characterized, and the longer stem of the stem-loop structured aptamer facilitated target binding and enlarged the detection signal. This label-free and cost-effective method showed high specificity and sensitivity, making it a useful tool for aptamer binding evaluation and target detection.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Furui Jin, Danke Xu
Summary: The mi-CHA method detects miRNAs by changing the conformation of hairpin structured DNA probes on the chip surface, showing high sensitivity and specificity for clinical diagnosis.
ANALYTICA CHIMICA ACTA
(2021)
Article
Biochemistry & Molecular Biology
Ileana Ramazzina, Valentina Macchioni, Katya Carbone
Summary: This study investigated the relationships between different green extracts from hop cones and their effects on human cultured colonocytes. The extracts were obtained using ultrasound and microwave assisted extraction, and their chemical fingerprinting revealed the presence of various bioactive compounds. The extracts showed dose-dependent cytotoxic effects, with the highest concentrations displaying pro-oxidant or antioxidant activity. Chemometric analysis identified the compounds most correlated with cellular toxicity and ROS production.
Review
Oncology
Alyssa L. Becker, Arup K. Indra
Summary: Cutaneous melanoma is a deadly form of skin cancer, and despite advancements in therapies, tumor resistance remains a challenge. Oxidative stress plays a paradoxical role in melanoma, promoting tumor initiation but inhibiting growth and metastasis. Manipulating the antioxidant system can enhance efficacy and survival, with antioxidant agents for chemoprevention and pro-oxidant agents for treatment.
Article
Chemistry, Analytical
Guo-Xi Liang, Shu-Ying Ye, Hao-Ming Yu, Kai-Ren Zhao, Peng-Fei Liu, Zhi-Jun Liu, Li Wang
Summary: This study proposes a new Zika virus diagnostic platform that combines a DNA walker structure and a localized catalytic hairpin assembly (LCHA) cascade amplification strategy for fast, low-cost, and accurate diagnosis. The method allows for Zika virus sequence detection down to 20 pM without enzymatic DNA amplification, and can detect the virus directly from serum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Food Science & Technology
Apinya Prachugsorn, Phuvadol Thanakiatkrai, Kittirat Phooplub, Sirirat Ouiganon, Yossawadee Sriaead, Panote Thavarungkul, Proespichaya Kanatharana, Chittanon Buranachai, Thitika Kitpipit
Summary: A novel direct asymmetric PCR and catalyzed hairpin assembly fluorescent biosensor was developed for naked eye detection of porcine DNA in food. The method showed high sensitivity and specificity, and demonstrated reproducibility. It can be utilized by law enforcement agencies and small-scale laboratories to investigate contamination and adulteration of halal foods.
Article
Chemistry, Multidisciplinary
Xiuling Chu, Desong Zhu, Min Liu, Lingrang Kong, Shiyun Ai
Summary: In this study, a scissor double fluorescent triple helix molecular switch based on triple helix DNA was developed for the ultrasensitive biosensing of Bt transgene. The nanosensor showed high sensitivity, generality in design, and simplicity in operation.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Analytical
Shihua Luo, Yuan Wu, Weilun Pan, Guangzhi Zhong, Bo Situ, Bo Li, Xinyi Ye, Xiujuan Jiang, Wenbin Li, Ye Zhang, Lei Zheng, Qian Wang
Summary: In this study, a new platform using an integrated magneto-fluorescent exosome (iMFEX) nanosensor was developed for rapid and sensitive detection of cancer-derived exosomes. The iMFEX nanosensor exhibited excellent specificity and sensitivity and showed potential for clinical application.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Biochemistry & Molecular Biology
Michal Nowak, Wieslaw Tryniszewski, Agata Sarniak, Anna Wlodarczyk, Piotr J. Nowak, Dariusz Nowak
Summary: This study investigated the effects of 17 phenolic compounds on ultra-weak photon emission from a modified Fenton system. Eight compounds showed inhibition effects, while five compounds enhanced the emission. The activity of four compounds changed with increasing concentrations. Three of the most active compounds contained structures associated with scavenging hydroxyl radicals and regenerating Fe2+.
Article
Engineering, Environmental
Zhiwei Sun, Juan Li, Yao Tong, Yufei Yang, Hui Li, Chuanxin Wang, Lutao Du, Yanyan Jiang
Summary: This article presents a ratiometric fluorescent biosensing strategy for the precise detection of colorectal cancer-associated miR-92a-3p. The strategy combines a nanoplatform composed of DNA-templated Ag-Au nanoclusters and Au nanoparticles/g-C3N4 nanosheets with catalytic hairpin assembly and sequence-induced fluorescence enhancement. It demonstrates a low detection limit, excellent selectivity, and the ability to detect miR-92a-3p in clinical exosome samples.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Katarzyna Ratajczak, Magdalena Stobiecka
JOURNAL OF PHYSICAL CHEMISTRY B
(2017)
Article
Nanoscience & Nanotechnology
Katarzyna Ratajczak, Bartlomiej E. Krazinski, Anna E. Kowalczyk, Beata Dworakowska, Slawomir Jakiela, Magdalena Stobiecka
ACS APPLIED MATERIALS & INTERFACES
(2018)
Article
Spectroscopy
Maria Hepel, Magdalena Stobiecka
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2018)
Article
Chemistry, Multidisciplinary
Katarzyna Ratajczak, Bartlomiej E. Krazinski, Anna E. Kowalczyk, Beata Dworakowska, Slawomir Jakiela, Magdalena Stobiecka
Article
Chemistry, Analytical
Miroslaw Zajac, Andrzej Lewenstam, Magdalena Stobiecka, Krzysztof Dolowy
Review
Biophysics
Magdalena Stobiecka, Katarzyna Ratajczak, Slawomir Jakiela
BIOSENSORS & BIOELECTRONICS
(2019)
Article
Biochemical Research Methods
Katarzyna Ratajczak, Agnieszka Lukasiak, Hubert Grel, Beata Dworakowska, Slawomir Jakiela, Magdalena Stobiecka
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2019)
Review
Chemistry, Applied
Katarzyna Ratajczak, Magdalena Stobiecka
CARBOHYDRATE POLYMERS
(2020)
Article
Chemistry, Multidisciplinary
Hubert Grel, Katarzyna Ratajczak, Slawomir Jakiela, Magdalena Stobiecka
Article
Biochemistry & Molecular Biology
Katarzyna Ratajczak, Karolina Sklodowska-Jaros, Ewelina Kalwarczyk, Jacek A. Michalski, Slawomir Jakiela, Magdalena Stobiecka
Summary: This article reports on the design and testing of novel high-performance biosensing devices based on a microporous cellulose matrix. Portable paper-based immunostrips were used for in-field blood typing in emergencies requiring blood transfusion, providing a high sensitivity, low cost, and simple operation option. The immunostrips were functionalized with antibodies via supramolecular interactions, enabling determination of all blood types of AB0 and Rh system by naked eye examination.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Katarzyna Ratajczak, Magdalena Stobiecka
Summary: Early cancer screening plays a crucial role in timely detection and clinical intervention. This study presents the development of a simple and sensitive fluorometric assay based on the aptamer probe (ABP) to monitor ATP, which is a significant biomarker for assessing the risk of malignancies. The optimized temperature for the best selectivity of ABP towards ATP was found to be 40 ? (K-SV = 1093 M-1, QE = 42%). Inhibition of glycolysis in SW480 cancer cells resulted in a 31.7% decrease in ATP production. Therefore, monitoring and modulating ATP concentration could potentially benefit future cancer treatment.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biophysics
Katarzyna Ratajczak, Hubert Grel, Piotr Olejnik, Slawomir Jakiela, Magdalena Stobiecka
Summary: Recent technological advancements have greatly contributed to the progress in cancer treatment, but the mortality rate remains high, necessitating the development of new and more effective treatment strategies. Efforts have been made in early cancer screening and innovative nanotechnologies. The review emphasizes the importance of exosomes as targets and novel drug delivery nanocarriers.
BIOSENSORS & BIOELECTRONICS
(2023)
Review
Biochemistry & Molecular Biology
Hubert Grel, Damian Woznica, Katarzyna Ratajczak, Ewelina Kalwarczyk, Julia Anchimowicz, Weronika Switlik, Piotr Olejnik, Piotr Zielonka, Magdalena Stobiecka, Slawomir Jakiela
Summary: Neurodegenerative diseases (NDs) are a diverse group of disorders characterized by the progressive degeneration and death of neurons, leading to a range of neurological symptoms. Mitochondrial dysfunction is a common factor in the pathogenesis of these diseases, as improper functioning and structural changes in mitochondria contribute to their development.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Meeting Abstract
Chemistry, Multidisciplinary
Magdalena Stobiecka, Katarzyna Ratajczak, Slawomir Jakiela
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Article
Biophysics
Magdalena Stobiecka, Slawomir Jakiela, Agata Chalupa, Piotr Bednarczyk, Beata Dworakowska
BIOSENSORS & BIOELECTRONICS
(2017)
Article
Biotechnology & Applied Microbiology
C. F. M. Menck, R. S. Galhardo, A. Quinet
Summary: Studies have shown that xeroderma pigmentosum variant (XP-V) patients have mutations in the POLH gene, resulting in a high frequency of skin tumors. However, it is paradoxical that the translesion synthesis DNA polymerase eta (Pol η) in these patients can actually suppress mutations, and the mechanism behind this is still unclear. Recent evidence suggests that cyclobutane pyrimidine dimers (CPDs) play an instructional role for Pol η, enabling accurate replication of these lesions, and the mutagenic effects induced by UV radiation are caused by the deamination of C-containing CPDs. This process leads to C>T transitions, which are the most common mutations in skin cancers. The delayed replication in XP-V cells amplifies the deamination of C in CPDs and increases the burden of C>T mutations through the activity of backup TLS polymerases.
MUTATION RESEARCH-FUNDAMENTAL AND MOLECULAR MECHANISMS OF MUTAGENESIS
(2024)