Expression of Oct4, a Stem Cell Marker, in the Hamster Pancreatic Cancer Model

Pancreatology ◽  
2006 ◽  
Vol 6 (4) ◽  
pp. 406-413 ◽  
Author(s):  
Katsumichi Iki ◽  
Parviz M. Pour
2012 ◽  
Vol 3 (6) ◽  
pp. 1186-1190 ◽  
Author(s):  
HIDEHIRO TAJIMA ◽  
TETSUO OHTA ◽  
HIROHISA KITAGAWA ◽  
KOICHI OKAMOTO ◽  
SEISHO SAKAI ◽  
...  

2008 ◽  
Vol 134 (4) ◽  
pp. A-96
Author(s):  
Sung Pil Hong ◽  
Jeong Youp Park ◽  
Jing Wen ◽  
Jin Wook Yoon ◽  
Kyung Hwa Park ◽  
...  

2015 ◽  
Vol 75 (21) ◽  
pp. 4582-4592 ◽  
Author(s):  
Joseph S. Dosch ◽  
Elizabeth K. Ziemke ◽  
Amrith Shettigar ◽  
Alnawaz Rehemtulla ◽  
Judith S. Sebolt-Leopold

2010 ◽  
Vol 299 (2) ◽  
pp. G303-G310 ◽  
Author(s):  
Randal May ◽  
Sripathi M. Sureban ◽  
Stan A. Lightfoot ◽  
Aimee B. Hoskins ◽  
Daniel J. Brackett ◽  
...  

Stem cells are critical in maintaining adult homeostasis and have been proposed to be the origin of many solid tumors, including pancreatic cancer. Here we demonstrate the expression patterns of the putative intestinal stem cell marker DCAMKL-1 in the pancreas of uninjured C57BL/6 mice compared with other pancreatic stem/progenitor cell markers. We then determined the viability of isolated pancreatic stem/progenitor cells in isotransplantation assays following DCAMKL-1 antibody-based cell sorting. Sorted cells were grown in suspension culture and injected into the flanks of athymic nude mice. Here we report that DCAMKL-1 is expressed in the main pancreatic duct epithelia and islets, but not within acinar cells. Coexpression was observed with somatostatin, NGN3, and nestin, but not glucagon or insulin. Isolated DCAMKL-1+ cells formed spheroids in suspension culture and induced nodule formation in isotransplantation assays. Analysis of nodules demonstrated markers of early pancreatic development (PDX-1), glandular epithelium (cytokeratin-14 and Ep-CAM), and isletlike structures (somatostatin and secretin). These data taken together suggest that DCAMKL-1 is a novel putative stem/progenitor marker, can be used to isolate normal pancreatic stem/progenitors, and potentially regenerates pancreatic tissues. This may represent a novel tool for regenerative medicine and a target for anti-stem cell-based therapeutics in pancreatic cancer.


2010 ◽  
Vol 138 (5) ◽  
pp. S-61
Author(s):  
Sripathi M. Sureban ◽  
Randal May ◽  
James H. Wyche ◽  
Shrikant Anant ◽  
Courtney W. Houchen

2010 ◽  
Author(s):  
Yoko Matsuda ◽  
Toshiyuki Ishiwata ◽  
Masao Kawamoto ◽  
Tetsushi Yamomoto ◽  
Kiyoko Kawahara ◽  
...  

Cells ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1607
Author(s):  
Dharmalingam Subramaniam ◽  
Sivapriya Ponnurangam ◽  
Satish Ramalingam ◽  
Deep Kwatra ◽  
Prasad Dandawate ◽  
...  

Honokiol (HNK) is a biphenolic compound that has been used in traditional medicine for treating various ailments, including cancers. In this study, we determined the effect of HNK on colon cancer cells in culture and in a colitis-associated cancer model. HNK treatment inhibited proliferation and colony formation while inducing apoptosis. In addition, HNK suppressed colonosphere formation. Molecular docking suggests that HNK interacts with reserve stem cell marker protein DCLK1, with a binding energy of −7.0 Kcal/mol. In vitro kinase assays demonstrated that HNK suppressed the DCLK1 kinase activity. HNK also suppressed the expression of additional cancer stem cell marker proteins LGR5 and CD44. The Hippo signaling pathway is active in intestinal stem cells. In the canonical pathway, YAP1 is phosphorylated at Ser127 by upstream Mst1/2 and Lats1/2. This results in the sequestration of YAP1 in the cytoplasm, thereby not allowing YAP1 to translocate to the nucleus and interact with TEAD1-4 transcription factors to induce gene expression. However, HNK suppressed Ser127 phosphorylation in YAP1, but the protein remains sequestered in the cytoplasm. We further determined that this occurs by YAP1 interacting with PUMA. To determine if this also occurs in vivo, we performed studies in an AOM/DSS induced colitis-associated cancer model. HNK administered by oral gavage at a dose of 5mg/kg bw for 24 weeks demonstrated a significant reduction in the expression of YAP1 and TEAD1 and in the stem marker proteins. Together, these data suggest that HNK prevents colon tumorigenesis in part by inducing PUMA-YAP1 interaction and cytoplasmic sequestration, thereby suppressing the oncogenic YAP1 activity.


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