Journal: Cancers

Article Title: Assessment of a Size-Based Method for Enriching Circulating Tumour Cells in Colorectal Cancer

doi: 10.3390/cancers14143446

Figure Lengend Snippet: Patient characteristics. Details of CRC patients used for CTC enrichment by a size-based method ( n = 17).

Article Snippet: The MetaCell CTC enrichment kit is a size-based method which has been previously used for enriching and culturing CTCs in vitro from several cancer types.

Techniques:

Journal: Cancers

Article Title: Assessment of a Size-Based Method for Enriching Circulating Tumour Cells in Colorectal Cancer

doi: 10.3390/cancers14143446

Figure Lengend Snippet: Qualitative assessment of MetaCell’s ability to retain CRC cells spiked into blood. After filtration, the cells retained on the MetaCell membrane from the following samples were stained with Hoechst 33,342 (nuclear stain), white blood cell (WBC) markers (CD45 and CD16), and CTC markers (EpCAM and cytokeratins): unspiked healthy blood (negative control, top row), healthy blood spiked with CRC cells (middle row), and unfiltered CRC cells (positive control, bottom row). The representative images show that unspiked healthy blood cells retained after filtering were positive for WBC markers and lacking CTC markers. Both healthy blood spiked with CRC cells retained on the MetaCell membrane and unfiltered CRC cells were positive for Hoechst 33,342 and CTC markers but negative for WBC markers. Cells were visualised on a Nikon A1+ confocal microscope at 200× magnification. Scale bar represents 80 µm.

Article Snippet: The MetaCell CTC enrichment kit is a size-based method which has been previously used for enriching and culturing CTCs in vitro from several cancer types.

Techniques: Filtration, Staining, Negative Control, Positive Control, Microscopy

Journal: Cancers

Article Title: Assessment of a Size-Based Method for Enriching Circulating Tumour Cells in Colorectal Cancer

doi: 10.3390/cancers14143446

Figure Lengend Snippet: Quantitative analysis of CTC markers in unfiltered and MetaCell-filtered CRC cells. ( A ) Expression of CTC markers ( EPCAM and KRT20 ) for unfiltered (HCT116_UF) and MetaCell-filtered HCT116 cells (HCT116_MF). ( B ) Expression of CTC markers for unfiltered DLD1 cells (DLD1_UF) and MetaCell-filtered DLD1 cells (DLD1_MF). Error bars represent the mean ± SD of three biological replicates. p -values determined by paired Student’s t -test; ns p > 0.05.

Article Snippet: The MetaCell CTC enrichment kit is a size-based method which has been previously used for enriching and culturing CTCs in vitro from several cancer types.

Techniques: Expressing

Journal: Cancers

Article Title: Assessment of a Size-Based Method for Enriching Circulating Tumour Cells in Colorectal Cancer

doi: 10.3390/cancers14143446

Figure Lengend Snippet: MetaCell recovery rates for healthy blood spiked with different concentrations of CRC cells. Different numbers (10, 100, and 500) of either HCT116 cells ( A ) or DLD1 cells ( B ) were spiked into healthy blood samples and filtered with MetaCell. The cells retained on the membrane and the same number of unfiltered cells were immunostained with CTC (EpCAM or cytokeratins) and WBC markers (CD45 and CD16). Cells that stained positively for Hoechst 33,342 and and at least one of the CTC markers but did not stain for WBC markers were manually counted using a Nikon A1+ confocal microscope at 200× magnification. Recovery rates are represented as the mean ± SD of three biological replicates. p -values were determined by a paired t -test. ns p > 0.05.

Article Snippet: The MetaCell CTC enrichment kit is a size-based method which has been previously used for enriching and culturing CTCs in vitro from several cancer types.

Techniques: Staining, Microscopy

Journal: Cancers

Article Title: Assessment of a Size-Based Method for Enriching Circulating Tumour Cells in Colorectal Cancer

doi: 10.3390/cancers14143446

Figure Lengend Snippet: Gene expression analysis to evaluate the effect of cell numbers on the recovery rates for MetaCell. The gene expression analysis of CTC markers ( EpCAM and KRT20 ) for the different numbers of unfiltered (10, 100, and 500 UF) and MetaCell-filtered HCT116 ( A ) or DLD1 ( B ) cells (10, 100, and 500 MF). Error bars represent the mean ± SD of three biological replicates. p -values were determined by paired t -tests. ns p > 0.05 for both cell lines.

Article Snippet: The MetaCell CTC enrichment kit is a size-based method which has been previously used for enriching and culturing CTCs in vitro from several cancer types.

Techniques: Expressing

Journal: medRxiv

Article Title: Clinical Significance of Circulating Tumor Cells in Unresectable Pancreatic Ductal Adenocarcinomas

doi: 10.1101/2021.04.29.21256283

Figure Lengend Snippet: CTCs were isolated and counted in blood samples from 52 patients with PDAC. CTC counts were analysed depending on (A) tumour size (median 36 mm, p=0.5139), (B) clinical stages (*p=0.0403) and (C) metastatic sites (p=0.077). Other sites include lung, bone, supraclavicular lymph node (SCN) and peritoneum. Each bar represents the median.

Article Snippet: The CD-PRIME™ system of the CD-CTC disposable disc and CD-CTC Enrichment kit (Clinomics, Inc., Ulsan, Korea) was used to isolate CTCs efficiently from millions of other blood cells in whole blood samples.

Techniques: Isolation

Journal: medRxiv

Article Title: Clinical Significance of Circulating Tumor Cells in Unresectable Pancreatic Ductal Adenocarcinomas

doi: 10.1101/2021.04.29.21256283

Figure Lengend Snippet: The change of CTC numbers after chemotherapy (post-CTx) relative to before chemotherapy (pre-CTx) was evaluated with chemotherapy responses and overall survival (OS) of patients with PDAC. (A) The relative change of CTC counts was assessed with responses to chemotherapy in patients with PDAC. There was no significance between the completely or partially responded (CR/PR) group and stably or progressively responded (SD/PD) group (p=0.1561). (B) The number of CTCs was compared between patients with increased CTCs (increased CTC group) and patients with decreased CTCs (decreased CTC group) after chemotherapy (*p=0.0208). Each bar represents the median. Kaplan–Meier survival curve was stratified by the comparative changes (increased or decreased) of (C) CTC counts and (D) serum CA19-9 levels after chemotherapy. Significance was observed in the change of CTC numbers (**p=0.0095), but not in the change of CA19-9 levels (P=0.8210).

Article Snippet: The CD-PRIME™ system of the CD-CTC disposable disc and CD-CTC Enrichment kit (Clinomics, Inc., Ulsan, Korea) was used to isolate CTCs efficiently from millions of other blood cells in whole blood samples.

Techniques: Stable Transfection