7,851 results match your criteria liquid biopsy

Liquid Biopsy in Breast Cancer: Circulating Tumor Cells and Circulating Tumor DNA.

Tae-Kyung Yoo

Adv Exp Med Biol 2021 ;1187:337-361

Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.

Cancer is associated with gene mutations, and the analysis of tumor-associated mutations is increasingly used for diagnostic, prognostic, and treatment purposes. These molecular landscapes of solid tumors are currently obtained from surgical or biopsy specimens. However, during cancer progression and treatment, selective pressures lead to additional genetic changes as tumors acquire drug resistance. Read More

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January 2021

Advances in Tumor Sampling and Sequencing in Breast Cancer and their Application in Precision Diagnostics and Therapeutics.

Adv Exp Med Biol 2021 ;1187:215-244

Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, South Korea.

Intra- and Inter-tumoral heterogeneity is one of the main hurdles in diagnosing and treating breast cancer. Selecting, sampling, and sequencing the samples appropriately provide unique opportunities in realizing precision medicine. This chapter reviews some of the past landmarks, state-of-the-art technologies, and future directions of translational research in terms of tumor sampling technologies and sequencing in breast cancer. Read More

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January 2021

Development and Validation of a Novel Circulating miRNA-Based Diagnostic Score for Early Detection of Hepatocellular Carcinoma.

Dig Dis Sci 2021 May 12. Epub 2021 May 12.

Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, Hubei, 430071, People's Republic of China.

Background: With the rise of liquid biopsy in oncology, circulating miRNAs have become one of the most promising noninvasive biomarkers for early detection of hepatocellular carcinoma (HCC). However, a reliable HCC-related circulating miRNA panel and corresponding diagnostic model remain to be explored.

Methods: Five large public datasets related to intact miRNA profiles in the serum or tumors of HCC patients were included and divided into training cohorts (GSE113740 and TCGA-LIHC) and validation cohorts (GSE112264, GSE113486 and GSE106817). Read More

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Mass spectrometry analysis of circulating breast cancer cells from a Xenograft mouse model.

STAR Protoc 2021 Jun 17;2(2):100480. Epub 2021 Apr 17.

Department of Biomedicine, Cancer Metastasis Laboratory, University of Basel and University Hospital Basel, 4058 Basel, Switzerland.

Circulating tumor cells (CTCs) are precursors of metastasis in various cancer types. Many aspects regarding CTC biology remain poorly understood. Here, we describe mass spectrometric analysis of CTCs from a breast cancer xenograft mouse model, including procedures comprising CTC enrichment, separation of different CTC subpopulations, and their quantitative proteomic assessment. Read More

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Liquid Biopsy for Colorectal Adenoma: Is the Exosomal miRNA Derived From Organoid a Potential Diagnostic Biomarker?

Clin Transl Gastroenterol 2021 May 12;12(5):e00356. Epub 2021 May 12.

Division of Gastroenterology, Tohoku University Graduate School of Medicine, Sendai, Japan.

Introduction: MicroRNAs (miRNAs) can serve as tumor biomarkers; however, their role in evaluating colorectal adenoma (CRA) is unclear. Recently, the organoid culture system enabled long-term expansion of human colon epithelium. This study aimed to examine the potential of exosomal miRNAs extracted from CRA organoids as biomarkers in the clinical liquid biopsy CRA test. Read More

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Combining radiomic phenotypes of non-small cell lung cancer with liquid biopsy data may improve prediction of response to EGFR inhibitors.

Sci Rep 2021 May 11;11(1):9984. Epub 2021 May 11.

Department of Radiology, University of Pennsylvania, Philadelphia, PA, 19104, USA.

Among non-small cell lung cancer (NSCLC) patients with therapeutically targetable tumor mutations in epidermal growth factor receptor (EGFR), not all patients respond to targeted therapy. Combining circulating-tumor DNA (ctDNA), clinical variables, and radiomic phenotypes may improve prediction of EGFR-targeted therapy outcomes for NSCLC. This single-center retrospective study included 40 EGFR-mutant advanced NSCLC patients treated with EGFR-targeted therapy. Read More

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Analytical Technologies for Liquid Biopsy of Subcellular Materials.

Annu Rev Anal Chem (Palo Alto Calif) 2021 May 11. Epub 2021 May 11.

Bioengineering Program, University of Kansas, Lawrence, Kansas 66045, USA; email:

Liquid biopsy markers, which can be secured from a simple blood draw or other biological samples, are used to manage a variety of diseases and even monitor for bacterial or viral infections. Although there are several different types of liquid biopsy markers, the subcellular ones, including cell-free DNA, microRNA, extracellular vesicles, and viral particles, are evolving in terms of their utility. A challenge with liquid biopsy markers is that they must be enriched from the biological sample prior to analysis because they are a vast minority in a mixed population, and potential interferences may be present in the sample matrix that can inhibit profiling the molecular cargo from the subcellular marker. Read More

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11-Ketotestosterone: the resilience of a potent androgen in prostate cancer patients after castration.

JCI Insight 2021 May 11. Epub 2021 May 11.

Department of Internal Medicine, Erasmus MC, Rotterdam, Netherlands.

Background: Continued androgen receptor (AR) signaling constitutes a key target for treatment in metastatic castration-resistant prostate cancer (CRPC). Studies have identified 11-ketotestosterone (11KT) as a potent AR agonist, but it is unknown if 11KT is present at physiologically-relevant concentrations in CRPC patients to drive AR activation. The goal of this study was to investigate the circulating steroid metabolome including all active androgens in CRPC patients. Read More

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Circulating extracellular vesicles are effective biomarkers for predicting response to cancer therapy.

EBioMedicine 2021 May 7;67:103365. Epub 2021 May 7.

Department of Respiratory and Critical Care Medicine, NHC Key Laboratory of Pulmonary Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, Hubei 430022, P.R. China. Electronic address:

Cancer remains one of the most challenging diseases, as many patients show limited therapeutic response to treatment. Liquid biopsy is a minimally invasive method that has the advantage of providing real-time disease information with the least damage to cancer patients. Extracellular vesicles (EVs) released by the parental cells and protected by lipid bilayer membrane structure represent an emerging liquid biopsy modality. Read More

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Fit-for-purpose quantitative liquid biopsy based droplet digital PCR assay development for detection of programmed cell death ligand-1 (PD-L1) RNA expression in PAXgene blood samples.

PLoS One 2021 10;16(5):e0250849. Epub 2021 May 10.

Global Clinical Biomarkers & Companion Diagnostics, Translational Medicine, Global Development, EMD Serono Research and Development Institute, Inc. a division of Merck KGaA, Billerica, MA, United States of America.

Development of a clinically applicable liquid biopsy-based test for PD-L1 mRNA expression would be beneficial in providing complementary evidence to current immunohistochemistry assays. Hence, we report the development of a fit-for-purpose assay for detection of blood PD-L1 mRNA expression using droplet digital polymerase chain reaction (ddPCR). TaqMan® assays were selected based on coverage of the PD-L1 gene and were tested for linearity and efficiency using real-time quantitative PCR. Read More

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Mutated circulating tumor DNA as a liquid biopsy in lung cancer detection and treatment.

Mol Oncol 2021 May 10. Epub 2021 May 10.

Germans Trias i Pujol Research Institute and Hospital, Badalona, Spain.

Over the past decade, substantial developments have been made in the detection of circulating tumor DNA (ctDNA) - cell-free DNA (cfDNA) fragments released into the circulation from tumor cells and displaying the genetic alterations of those cells. As such, ctDNA detected in liquid biopsies serves as a powerful tool for cancer patient stratification, therapy guidance, detection of resistance and relapse monitoring. In this Review, we describe lung cancer diagnosis and monitoring strategies using ctDNA detection technologies and compile recent evidence regarding lung-cancer-related mutation detection in liquid biopsy. Read More

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Detection of fusion in cell-free DNA of a patient with advanced gastric cancer: A case report.

World J Clin Cases 2021 Apr;9(12):2884-2889

Department of Laboratory Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, South Korea.

Background: Gastric cancer is the fifth most diagnosed cancer worldwide and the third most common cause of cancer-related death. In recent decades, increasing application of next-generation sequencing has enabled detection of molecular aberrations, including fusions. In cases where tissue is difficult to obtain, cell-free DNA (cfDNA) is used for detecting mutations to identify the molecular profile of cancer. Read More

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Evaluation of Monocarboxylate Transporter 4 ( Expression and Its Prognostic Significance in Circulating Tumor Cells From Patients With Early Stage Non-Small-Cell Lung Cancer.

Front Cell Dev Biol 2021 22;9:641978. Epub 2021 Apr 22.

Analysis of Circulating Tumor Cells, Lab of Analytical Chemistry, Department of Chemistry, University of Athens, Athens, Greece.

Monocarboxylate transporter 4 ( can influence the amount of lactate in the tumor microenvironment and further control cancer cell proliferation, migration, and angiogenesis. We investigated for the first time the expression of in circulating tumor cells (CTCs) derived from early stage Non-Small Cell Lung Cancer patients (NSCLC) and whether this is associated with clinical outcome. A highly sensitive RT-qPCR assay for quantification of transcripts was developed and validated and applied to study expression in CTC isolated through the Parsortix size-dependent microfluidic device from 53 and 9 peripheral blood (PB) samples of NSCLC patients at baseline (pre-surgery) and at relapse, respectively, as well as the "background noise" was evaluated using peripheral blood samples from 10 healthy donors (HD) in exactly the same way as patients. Read More

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Circulating Biomarkers for Early Stage Non-Small Cell Lung Carcinoma Detection: Supplementation to Low-Dose Computed Tomography.

Front Oncol 2021 21;11:555331. Epub 2021 Apr 21.

The University of Queensland Diamantina Institute, The University of Queensland, Dermatology Research Centre, Brisbane, QLD, Australia.

Lung cancer is currently the leading cause of cancer death in both developing and developed countries. Given that lung cancer has poor prognosis in later stages, it is essential to achieve an early diagnosis to maximize patients' overall survival. Non-small cell lung cancer (NSCLC) is the most common form of primary lung cancer in both smokers and non-smokers. Read More

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Extracellular vesicles in prostate cancer: a narrative review.

Transl Androl Urol 2021 Apr;10(4):1890-1907

Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan.

Over the past decade, there has been remarkable progress in prostate cancer biomarker discovery using urine- and blood-based assays. A liquid biopsy is a minimally invasive procedure to investigate the cancer-related molecules in circulating tumor cells (CTCs), cell-free DNA, and extracellular vesicles (EVs). Liquid biopsies have the advantage of detecting heterogeneity as well as acquired resistance in cancer. Read More

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Urinary extracellular vesicles: a rising star in bladder cancer management.

Transl Androl Urol 2021 Apr;10(4):1878-1889

Department of Urology, The Jikei University School of Medicine, Tokyo, Japan.

Clinically, the detection of bladder cancer (BCa) typically requires cystoscopy, which is potentially harmful and sometimes accompanied by adverse effects. Thus, new biomarkers are desirable for improving the management of BCa. Recently, "liquid biopsy" has received enormous attentions and has been extensively studied due to its promising clinical implication for precise medicine. Read More

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Toward urinary cell-free DNA-based treatment of urothelial carcinoma: a narrative review.

Transl Androl Urol 2021 Apr;10(4):1865-1877

Department of Urology, Kindai University Faculty of Medicine, Osakasayama, Japan.

Liquid biopsy technique targeting urinary cell-free DNA (cfDNA) is getting a lot of attention to overcome limitations of the present treatment strategy for urothelial carcinoma, including urothelial bladder carcinoma (UBC) and upper tract urothelial carcinoma (UTUC). Analysis of tumor-derived DNA in urine focusing either on genomic or epigenomic alterations, holds great potential as a noninvasive method for the detection of urothelial carcinoma with high accuracy. It is also predictive of prognosis and response to drugs, and reveals the underlying characteristics of different stages of urothelial carcinoma. Read More

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Molecular biomarker testing for non-small cell lung cancer: consensus statement of the Korean Cardiopulmonary Pathology Study Group.

J Pathol Transl Med 2021 May 11. Epub 2021 May 11.

Department of Pathology, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea.

Molecular biomarker testing is the standard of care for non-small cell lung cancer (NSCLC) patients. In 2017, the Korean Cardiopulmonary Pathology Study Group and the Korean Molecular Pathology Study Group co-published a molecular testing guideline which contained almost all known genetic changes that aid in treatment decisions or predict prognosis in patients with NSCLC. Since then there have been significant changes in targeted therapies as well as molecular testing including newly approved targeted drugs and liquid biopsy. Read More

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miR-21 in EVs from pulmonary epithelial cells promotes myofibroblast differentiation via glycolysis in arsenic-induced pulmonary fibrosis.

Environ Pollut 2021 Apr 29;286:117259. Epub 2021 Apr 29.

Center for Global Health, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, Jiangsu, People's Republic of China; China International Cooperation Center for Environment and Human Health, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Jiangsu Collaborative Innovation Center for Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing, 211166, Jiangsu, People's Republic of China. Electronic address:

As an environmental toxicant, arsenic causes damage to various organs and systems of the body and has attracted worldwide attention. It is well-known that exposure to arsenic can induce pulmonary fibrosis, but the molecular mechanisms are elusive. Glycolysis is involved in the process of various diseases, including pulmonary fibrosis. Read More

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In vitro and in vivo assessments of inspired Ag/80S bioactive nanocomposites against carbapenem-resistant Klebsiella pneumoniae.

Mater Sci Eng C Mater Biol Appl 2021 Jun 1;125:112093. Epub 2021 Apr 1.

Department of Medical Laboratory Science and Biotechnology, College of Health Sciences, Kaohsiung Medical University, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan; Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan. Electronic address:

In 2017 the World Health Organization listed carbapenem-resistant K. pneumoniae as a critical priority for developing a novel antimicrobial agent. Here we report on our investigation of the antibacterial efficacy of silver nanoparticles (AgNPs), confined to a mesostructured material and designated as an Ag/80S bioactive nanocomposite, against carbapenem-resistant K. Read More

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Utility of liquid-based cytology on residual needle rinses collected from core needle biopsy for lung nodule diagnosis.

Cancer Med 2021 May 7. Epub 2021 May 7.

Department of Anorectal Surgery, The First Affiliated Hospital of University of South China, Hengyang, China.

Background: Core needle biopsy (CNB) has become the most common tissue sampling modality for pathological diagnosis of peripheral lung nodules. However, approximately 10% of pulmonary CNB specimens cannot be unambiguously diagnosed, even with auxiliary techniques. This retrospective study investigated the diagnostic value of liquid-based cytology on residual pulmonary CNB material collected from needle rinses. Read More

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Hepatitis C virus eradication decreases the risks of liver cirrhosis and cirrhosis-related complications (T-COACH).

J Gastroenterol Hepatol 2021 May 7. Epub 2021 May 7.

Division of Gastroenterology and Hepatology, Department of Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan.

Background And Aims: It is currently unknown how hepatitis C virus (HCV) eradication with pegylated interferon and ribavirin (PR) therapy affects the incidence of new-onset liver cirrhosis (LC) in patients without cirrhosis and the incidence of decompensated liver disease (DLD) or hepatocellular carcinoma (HCC) in patients with cirrhosis.

Methods: Taiwanese chronic hepatitis C cohort (T-COACH) is a nationwide HCV registry cohort from 23 hospitals in Taiwan recruited between 2003 and 2015. This study enrolled 10,693 patients with chronic hepatitis C (CHC), linked to the Taiwan National Health Insurance Research Database, receiving PR therapy for at least 4 weeks for new-onset LC and liver-related complications (DLD or HCC). Read More

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Detection of cancer metastasis: past, present and future.

Clin Exp Metastasis 2021 May 7. Epub 2021 May 7.

Moffitt Cancer Center, Department of Pathology, 12902 Magnolia Drive, Tampa, FL, 33612, USA.

The clinical importance of metastatic spread of cancer has been recognized for centuries, and melanoma has loomed large in historical descriptions of metastases, as well as the numerous mechanistic theories espoused. The "fatal black tumor" described by Hippocrates in 5000 BC that was later termed "melanose" by Rene Laennec in 1804 was recognized to have the propensity to metastasize by William Norris in 1820. And while the prognosis of melanoma was uniformly acknowledged to be dire, Samuel Cooper described surgical removal as having the potential to improve prognosis. Read More

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Liquid biopsies to distinguish malignant from benign pulmonary nodules.

Thorac Cancer 2021 May 7. Epub 2021 May 7.

Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital, Anhui Medical University, Hefei, China.

Over the past decades, low-dose computed tomography (LD-CT) screening has been widely used for the early detection of lung cancer. Increasing numbers of indeterminate pulmonary nodules are now being discovered. However, it remains challenging to distinguish malignant from benign pulmonary nodules, especially those considered to be small or ground-glass (GGN) nodules. Read More

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Quantitative analysis of cell-free DNA by droplet digital PCR reveals the presence of EGFR mutations in non-malignant lung pathologies.

Monaldi Arch Chest Dis 2021 May 4. Epub 2021 May 4.

Division of Molecular Genetics and Cancer, Nitte University Centre For Science Education and Research (NUCSER), Nitte (Deemed to be University), Mangalore .

Tyrosine kinase inhibitors (TKIs) targeting epidermal growth factor receptor (EGFR) are effectively used in treatment of non-small cell lung cancer (NSCLC). Mutation profile of tyrosine kinase domain of EGFR determines the eligibility of the patients for tyrosine kinase inhibitor (TKI) therapy. Liquid biopsy, which relies on circulating tumor-derived nucleic acids, has emerged as an effective tool in lung cancer management with proven diagnostic, prognostic and predictive applications. Read More

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Assessment of Total, PTEN, and AR-V7 Circulating Tumor Cell Count by Flow Cytometry in Patients with Metastatic Castration-Resistant Prostate Cancer Receiving Enzalutamide.

Clin Genitourin Cancer 2021 Apr 3. Epub 2021 Apr 3.

Department of Clinical Medicine and Surgery, University Federico II of Naples, Naples, Italy; Regional Reference Center for Rare Tumors, Department of Oncology and Hematology, AOU Federico II of Naples, Naples, Italy. Electronic address:

Introduction: Metastatic castration-resistant prostate cancer (mCRPC) is a deadly disease. Enzalutamide is an oral second-generation anti-androgen that is active in mCRPC. Circulating tumor cells (CTC) count correlates with overall survival (OS) in mCRPC, whereas detection of the androgen-receptor splice variant 7 (AR-V7) in CTC predicts poor response to oral second-generation anti-androgens. Read More

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Specific miRNA Profile in Chronic Obstructive Pulmonary Disease Related to Biomass Smoke Exposure.

Arch Bronconeumol 2021 Apr 15. Epub 2021 Apr 15.

Laboratory of Cellular and Molecular Pathology, Facultad de Ciencias de la Salud, Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Talca, Chile. Electronic address:

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Non-invasive diagnosis of colorectal cancer by Raman spectroscopy: Recent developments in liquid biopsy and endoscopy approaches.

Spectrochim Acta A Mol Biomol Spectrosc 2021 Apr 16;258:119818. Epub 2021 Apr 16.

Raman Project Center for Medical and Biological Applications, Shimane University, Matsue, Japan; Faculty of Life and Environmental Sciences, Shimane University, Matsue, Japan. Electronic address:

Colorectal cancer (CRC) is the third most common cancer diagnosed globally and is also one of the leading causes of cancer deaths in both men and women. The progression of CRC is slow and is often contained in colon but the risk increases with age. Based on the high certainty that the net benefit of screening in an age group is substantial, screening for CRC is recommended beginning at the age of 50. Read More

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High prevalence of unawareness of HCV infection status among both HCV-seronegative and seropositive people living with human immunodeficiency virus in Taiwan.

PLoS One 2021 6;16(5):e0251158. Epub 2021 May 6.

Department of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.

Objectives: HCV infection status awareness is crucial in the HCV care continuum for both HCV-seropositive (HCV-positive status awareness) and seronegative (HCV-negative status awareness) populations. However, trends in the unawareness of HCV infection status (UoHCV) remain unknown in HIV-positive patients. This study investigated UoHCV prevalence, the associated factors of UoHCV, and its association with HCV-related knowledge in HIV-positive patients. Read More

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