Publications by authors named "Aniruddha Chatterjee"

This study aims to develop and evaluate flurbiprofen-loaded polymeric nanoparticles to achieve sustained drug release, enhancing therapeutic efficacy and minimising dosing frequency for improved patient outcomes. Flurbiprofen-loaded polymeric nanoparticles were prepared using a tubular microreactor and spray drying, optimised via Box-Behnken Design. Characterisation included particle size, encapsulation efficiency, in vitro and in vivo drug release, and techniques like FTIR, DSC, XRD, and SEM.

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  • * Analysis of DNA methylation data, particularly through techniques like bisulfite sequencing, allows researchers to study the relationship between gene methylation patterns and various diseases.
  • * The Differential Methylation Analysis Pipeline (DMAP) has been developed to facilitate efficient analysis of DNA methylation data, offering a user-friendly protocol compatible with various input formats for both whole-genome and reduced-representation bisulfite sequencing.
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With an increase in accuracy and throughput of long-read sequencing technologies, they are rapidly being assimilated into the single-cell sequencing pipelines. For transcriptome sequencing, these techniques provide RNA isoform-level information in addition to the gene expression profiles. Long-read sequencing technologies not only help in uncovering complex patterns of cell-type specific splicing, but also offer unprecedented insights into the origin of cellular complexity and thus potentially new avenues for drug development.

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  • The use of cell-free DNA (cfDNA) methylation in lung cancer can help distinguish between cancerous and healthy cells, identify the tissue source of methylation changes, and create chances for targeted therapies.* -
  • cfDNA methylation analysis shows promise as a clinical tool for lung cancer screening, early diagnosis, and treatment, but more validation studies are needed before it can be widely applied.* -
  • The discussion includes an overview of current cfDNA methylation analysis techniques, their clinical advantages and limitations, proposed models for lung cancer screening, and suggestions for future research.*
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  • Cutaneous melanoma is increasing globally at a faster rate than other cancers, with metastasis being the leading cause of death in patients, highlighting the need for a better understanding of this process and new treatment options.
  • Recent research indicates that epigenetic factors play a significant role in melanoma progression, revealing a mechanism where high DNA methylation can paradoxically activate certain genes instead of silencing them as previously thought.
  • The study used a new CRISPR-based system to manipulate DNA methylation in melanoma cells, demonstrating effective changes in gene expression and providing insights into the role of specific genes in the IFN pathway signalling, challenging traditional views on DNA methylation.
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Cervical cancer (CC) is a key contributor to cancer-related mortality in several countries. The identification of molecular markers and the underlying mechanism may help improve CC management. We studied the regulation and biological function of the chromosome 14 microRNA cluster (C14MC; miR-379/miR-656) in CC.

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  • - Prostate cancer is a common cancer affecting men, with treatment-induced de novo neuroendocrine prostate cancer (t-NEPC) occurring in up to 25% of patients after androgen deprivation therapy, which leads to a much worse prognosis.
  • - Key genetic mutations such as TP53, RB1, and MYCN contribute to the transition from prostate adenocarcinoma (PRAD) to t-NEPC, along with various epigenetic changes that enhance cellular plasticity.
  • - Current challenges in diagnosing NEPC include the absence of reliable biomarkers; however, advancements in liquid biopsy techniques to analyze circulating tumor cells and ctDNA could soon allow for non-invasive monitoring and better treatment strategies.
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Heat shock protein 90 (Hsp90) is a predominant member among Heat shock proteins (HSPs), playing a central role in cellular protection and maintenance by aiding in the folding, stabilization, and modification of diverse protein substrates. It collaborates with various co-chaperones to manage ATPase-driven conformational changes in its dimer during client protein processing. Hsp90 is critical in cellular function, supporting the proper operation of numerous proteins, many of which are linked to diseases such as cancer, Alzheimer's, neurodegenerative conditions, and infectious diseases.

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Metastatic progression is a complex, multistep process and the leading cause of cancer mortality. There is growing evidence that emphasises the significance of epigenetic modification, specifically DNA methylation and histone modifications, in influencing colorectal (CRC) metastasis. Epigenetic modifications influence the expression of genes involved in various cellular processes, including the pathways associated with metastasis.

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  • - The study focuses on glioblastoma (GBM), a dangerous brain cancer, and how patient-derived cancer organoids (PGOs) can help understand how tumors respond to treatments and why they sometimes don't work.
  • - Researchers created PGOs from GBM samples and tested how they respond to a cancer drug called temozolomide (TMZ), finding that different organoids had different reactions based on their unique genetic traits.
  • - The results show that PGOs can keep the important genetic differences of the tumors and could be used in the future to tailor treatments to individual patients and discover new drug targets.
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Esophageal squamous cell carcinoma (ESCC) is a highly aggressive tumor with significant heterogeneity in incidence and outcomes. The role of Neuregulin 1 (NRG1) in ESCC and its contribution to aggressiveness remain unknown. This study aims to investigate the functions and molecular mechanisms of NRG1 in ESCC as well as the treatment strategy for ESCC with overexpression of NRG1.

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DNA methylation is a fundamental epigenetic modification involved in various biological processes and diseases. Analysis of DNA methylation data at a genome-wide and high-throughput level can provide insights into diseases influenced by epigenetics, such as cancer. Recent technological advances have led to the development of high-throughput approaches, such as genome-scale profiling, that allow for computational analysis of epigenetics.

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Aberrant DNA methylation is a universal feature of cancer. Here, we present a protocol for generating high-quality genome-scale DNA methylation sequencing data from a variety of human cancer biospecimens including immortalized cell lines, fresh-frozen surgical resections, and formalin-fixed paraffin-embedded tissues. We describe steps for DNA extraction considerations, reduced representation bisulfite sequencing, data processing and quality control, and downstream data analysis and integration.

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Pancreatic cancer (PanCa) presents a catastrophic disease with poor overall survival at advanced stages, with immediate requirement of new and effective treatment options. Besides genetic mutations, epigenetic dysregulation of signaling pathway-associated enriched genes are considered as novel therapeutic target. Mechanisms beneath the deoxyribonucleic acid methylation and its utility in developing of epi-drugs in PanCa are under trails.

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Colorectal cancer (CRC) is a leading cause of morbidity and mortality worldwide. The majority of CRC deaths are caused by tumor metastasis, even following treatment. There is strong evidence for epigenetic changes, such as DNA methylation, accompanying CRC metastasis and poorer patient survival.

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Transposable elements (TEs) are genetic elements that have evolved as crucial regulators of human development and cancer, functioning as both genes and regulatory elements. When TEs become dysregulated in cancer cells, they can serve as alternate promoters to activate oncogenes, a process known as onco-exaptation. This study aimed to explore the expression and epigenetic regulation of onco-exaptation events in early human developmental tissues.

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A global increase in the incidence of pancreatic cancer (PanCa) presents a major concern and health burden. The traditional tissue-based diagnostic techniques provided a major way forward for molecular diagnostics; however, they face limitations based on diagnosis-associated difficulties and concerns surrounding tissue availability in the clinical setting. Late disease development with asymptomatic behavior is a drawback in the case of existing diagnostic procedures.

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Neuroendocrine neoplasms (NENs) are a group of rare, heterogeneous tumors of neuroendocrine cell origin, affecting a range of different organs. The clinical management of NENs poses significant challenges, as tumors are often diagnosed at an advanced stage where overall survival remains poor with current treatment regimens. In addition, a host of complex and often unique molecular changes underpin the pathobiology of each NEN subtype.

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Neuroendocrine tumors have variety of biological and clinical characteristics. The classification of neuroendocrine neoplasm has evolved, and the newest 2019 World Health Organization classification outlines a well-differentiated high-grade G3 subtype, recognizing its differences from the poorly differentiated neuroendocrine carcinoma. Ga-DOTAT PET has largely replaced somatostatin scintigraphy as the diagnostic workup choice for NENs.

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Morphological, transcriptomic, and genomic defects are well-explored parameters of cancer biology. In more recent years, the impact of epigenetic influences, such as DNA methylation, is becoming more appreciated. Aberrant DNA methylation has been implicated in many types of cancers, influencing cell type, state, transcriptional regulation, and genomic stability to name a few.

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Ribonucleic acids (RNAs) are fundamental molecules that control regulation and expression of the genome and therefore the function of a cell. Robust analysis and quantification of RNA transcripts hold critical importance in understanding cell function, altered phenotypes in different biological context, for understanding and targeting diseases. The development of RNA-sequencing (RNA-Seq) now provides opportunities to analyze the expression and function of RNA molecules at an unprecedented scale.

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  • * Current CTC isolation methods, like CellSearch, have limitations including cost and reliance on a single marker, which leads to challenges in both detection and monitoring of cancer.
  • * The MetaCell method offers a novel approach by using size differences to filter CTCs from blood, allowing for easier enrichment and subsequent analysis through immunohistochemical staining.
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Background: Pancreatic ductal adenocarcinoma (PDAC) is one of the leading cancers worldwide and has a poor survival, with a 5-year survival rate of only 8.5%. In this study we investigated altered DNA methylation associated with PDAC severity and prognosis.

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Melanoma is a highly aggressive skin cancer, which, although highly immunogenic, frequently escapes the body's immune defences. Immune checkpoint inhibitors (ICI), such as anti-PD1, anti-PDL1, and anti-CTLA4 antibodies lead to reactivation of immune pathways, promoting rejection of melanoma. However, the benefits of ICI therapy remain limited to a relatively small proportion of patients who do not exhibit ICI resistance.

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