scholarly journals LRIG1 is a positive prognostic marker in Merkel cell carcinoma and Merkel cell carcinoma expresses epithelial stem cell markers

2021 ◽  
Author(s):  
Benjamin Sundqvist ◽  
Harri Sihto ◽  
Maria von Willebrand ◽  
Tom Böhling ◽  
Virve Koljonen
Keyword(s):  
Stem Cells ◽  
Stem Cell ◽  
Cell Carcinoma ◽  
Merkel Cell Carcinoma ◽  
Stem Cell Markers ◽  
Merkel Cell ◽  
Epithelial Stem Cells ◽  
Normal Human Skin ◽  
Cell Markers ◽  
Normal Human

AbstractMerkel cell carcinoma (MCC) is a rare and aggressive neuroendocrine malignancy of the skin. The cell of origin of MCC is thus far unknown and proposed cells of origin include Merkel cells, pro-/pre- or pre-B cells, epithelial stem cells, and dermal stem cells. In this study, we aimed to shed further light on the possibility that a subset of MCC tumors arise from epithelial stem cells of the skin by examining the expression of hair follicle and epidermal stem cell markers in MCC and normal human skin. We also aimed to elucidate any correlation between the expression of these markers and tumor Merkel cell polyomavirus (MCPyV) status or other clinicopathological characteristics or patient survival. Expression of CK19, SOX9, LGR5, and LRIG1 in MCC and normal human skin was studied by immunohistochemistry, and the staining patterns or intensities were statistically correlated with patient, tumor, MCPyV, and survival parameters. In a cohort of 137 cases of MCC, we observed dot-like immunoexpression of CK19 in 30 cases (22.1%) and homogeneous expression in 103 cases (75.7%). We also observed positive immunoexpression of SOX9 in 21 cases (15.3%), LGR5 in 118 cases (86.1%), and LRIG1 in 117 cases (86.0%). Immunoexpression of LRIG1 was found to correlate with better overall and MCC-specific survival. We observed frequent immunoexpression of several hair follicle and epidermal stem cell markers in MCC and found LRIG1 to be a positive prognostic marker in MCC.

scholarly journals TdT Expression Is a Marker of Better Survival in Merkel Cell Carcinoma, and Expression of B-Cell Markers Is Associated With Merkel Cell Polyomavirus

2020 ◽  
Vol 154 (1) ◽  
pp. 38-47
Author(s):  
Mai P Hoang ◽  
Piotr Donizy ◽  
Cheng-Lin Wu ◽  
Janusz Kopczynski ◽  
Malgorzata Pieniazek ◽  
...  
Keyword(s):  
Overall Survival ◽  
B Cell ◽  
Cell Carcinoma ◽  
Merkel Cell Carcinoma ◽  
Merkel Cell Polyomavirus ◽  
Fisher Exact Test ◽  
Stem Cell Markers ◽  
Merkel Cell ◽  
Exact Test ◽  
Cell Markers

Abstract Objectives Merkel cell carcinoma is a rare but very aggressive cutaneous tumor. We evaluated the prognostic potential of B-cell markers (terminal deoxynucleotidyl transferase [TdT], PAX5, CD117), follicular stem cell markers (CK15, CK19), p63, p53, RB, and Merkel cell polyomavirus (MCPyV; CM2B4) in 136 primary cutaneous Merkel cell carcinomas. Methods Clinical, histopathologic, and immunohistochemical analyses were performed. The results were correlated with patient outcomes by Fisher exact test, log-rank tests, and Cox multivariate models. Results By Fisher exact test, although TdT significantly correlated with both lack of progression (P = .0087) and alive status (P = .0056), MCPyV status correlated only with alive status (P = .031). In univariate analyses, TdT, MCPyV, and RB significantly correlated with improved overall survival, whereas p63 and CK15 correlated with worse overall survival. However, in multivariate analyses, only TdT expression remained as an independent predictor of improved overall survival, Merkel cell carcinoma-specific survival, and progression-free survival. By linear regression analyses, significant correlations between MCPyV vs TdT, PAX5, and CD117 were observed. Conclusions TdT expression is a potential marker of better survival in Merkel cell carcinoma. Expression of B-cell markers is associated with MCPyV, suggesting that clonal viral integration might play a role in the expression of these markers.

scholarly journals Stem cell markers expression evaluation in Oral Squamous Cell Carcinoma

2021 ◽  
Vol 10 (13) ◽  
pp. e314101320840
Author(s):  
Julio Cesar Ramos Cadilho ◽  
Silvia Maria de Carvalho Lyra ◽  
Ana Beatriz Machado Lima ◽  
Carina Maciel da Silva Boghossian ◽  
Cláudia Maria Pereira
Keyword(s):  
Stem Cells ◽  
Squamous Cell Carcinoma ◽  
Stem Cell ◽  
Oral Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Embryonic Stem ◽  
Tobacco Consumption ◽  
Stem Cell Markers ◽  
Cell Markers

Oral carcinogenesis is a highly complex process. Molecular studies demonstrate that some oral cancers progress from pre-neoplastic lesions. Cancer stem cells (CSCs), a small cellular group within the tumor, have currently received much attention by its self-renewal and tumor differentiation ability. It is considered that CSCs may be responsible for the relapse and metastasis of cancer. CSCs have been reported to express common embryonic stem cells markers such as Nestin and Nanog. The aim of the present study was to identify the presence of Nestin and Nanog markers in patients with oral squamous cell carcinoma (OSCC). Nine samples were collected from patients diagnosed with OSCC and two healthy oral mucosa were used as control. The markers expression in nine OSCC was determined by end-point PCR. The OSCC population analyzed was mostly composed of black and white males, with a mean age of 70.6 years, that reported alcohol and tobacco consumption. Nestin and Nanog stem cell markers were expressed in all OSCCs and normal samples analyzed. As these two markers have already been related to the mechanism of metastasis and relapses in cancer, its expression determination could help to understand the aggressive and invasive nature of OSCC.

Stress resistant human embryonic stem cells as a potential source for the identification of novel cancer stem cell markers

2010 ◽  
Vol 289 (2) ◽  
pp. 208-216 ◽  
Author(s):  
Shaker A. Mousa ◽  
Thangirala Sudha ◽  
Evgeny Dyskin ◽  
Usawadee Dier ◽  
Christine Gallati ◽  
...  
Keyword(s):  
Stem Cells ◽  
Stem Cell ◽  
Embryonic Stem Cells ◽  
Cancer Stem Cell ◽  
Human Embryonic Stem Cells ◽  
Embryonic Stem ◽  
Stem Cell Markers ◽  
Cell Markers ◽  
Cancer Stem Cell Markers ◽  
Potential Source

Distribution of amniotic stem cells in human term amnion membrane

Microscopy ◽  
2021 ◽  
Author(s):  
Nobuyuki Koike ◽  
Jun Sugimoto ◽  
Motonori Okabe ◽  
Kenichi Arai ◽  
Makiko Nogami ◽  
...  
Keyword(s):  
Stem Cells ◽  
Stem Cell ◽  
Stem Cell Markers ◽  
Epithelial Stem Cells ◽  
Human Amnion ◽  
Transporter Protein ◽  
Amniotic Mesenchymal Stem Cells ◽  
Amnion Membrane ◽  
And Function ◽  
A Site

Abstract Amnion membrane studies related to miscarriage have been conducted in the field of obstetrics and gynecology. However, the distribution of stem cells within the amnion and the differences in the properties of each type of stem cells are still not well understood. We address this gap in knowledge in the present study where we morphologically classified the amnion membrane, and we clarified the distribution of stem cells here to identify functionally different amniotic membrane–derived stem cells. The amnion can be divided into a site that is continuous with the umbilical cord (region A), a site that adheres to the placenta (region B), and a site that is located opposite the placenta (region C). We found that human amnion epithelial stem cells (HAECs) that strongly express stem cell markers were abundant in area A. HAEC not only expressesed stem cell-specific surface markers TRA-1-60, Tra-1-81, SSEA4, SSEA3, but was also OCT-3/4 positive and had alkaline phosphatase activity. Human amniotic mesenchymal stem cells expressed KLF-A, OCTA, Oct3/4, c-MYC and Sox2 which is transcription factor. Especially, in regions A and B they have expressed CD73, and the higher expression of BCRP which is drug excretion transporter protein than the other parts. These data suggest that different types of stem cells may have existed in different area. The understanding the relation with characteristics of the stem cells in each area and function would allow for the efficient harvest of suitable HAE and HAM stem cells as using tool for regenerative medicine.

scholarly journals Derivation and Characterization of EGFP-Labeled Rabbit Limbal Mesenchymal Stem Cells and Their Potential for Research in Regenerative Ophthalmology

Biomedicines ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 1134
Author(s):  
Julia I. Khorolskaya ◽  
Daria A. Perepletchikova ◽  
Daniel V. Kachkin ◽  
Kirill E. Zhurenkov ◽  
Elga I. Alexander-Sinkler ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Stem Cell ◽  
Fluorescent Protein ◽  
Rabbit Model ◽  
Stem Cell Markers ◽  
Epithelial Stem Cells ◽  
Limbal Stem Cell ◽  
Green Fluorescent

The development of cell-based approaches to the treatment of various cornea pathologies, including limbal stem cell deficiency (LSCD), is an area of current interest in regenerative biomedicine. In this context, the shortage of donor material is urgent, and limbal mesenchymal stem cells (L-MSCs) may become a promising cell source for the development of these novel approaches, being established mainly within the rabbit model. In this study, we obtained and characterized rabbit L-MSCs and modified them with lentiviral transduction to express the green fluorescent protein EGFP (L-MSCs-EGFP). L-MSCs and L-MSCs-EGFP express not only stem cell markers specific for mesenchymal stem cells but also ABCG2, ABCB5, ALDH3A1, PAX6, and p63a specific for limbal epithelial stem cells (LESCs), as well as various cytokeratins (3/12, 15, 19). L-MSCs-EGFP have been proven to differentiate into adipogenic, osteogenic, and chondrogenic directions, as well as to transdifferentiate into epithelial cells. The possibility of using L-MSCs-EGFP to study the biocompatibility of various scaffolds developed to treat corneal pathologies was demonstrated. L-MSCs-EGFP may become a useful tool for studying regenerative processes occurring during the treatment of various corneal pathologies, including LSCD, with the use of cell-based technologies.

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