Abstract:
:GRP78, also referred to as BiP, is an essential molecular chaperone and a master regulator of the unfolded protein response. Traditionally, GRP78 is regarded as localized in the lumen of the endoplasmic reticulum (ER). However, recent findings revealed that a subfraction of GRP78 can localize to the surface of specific cell types. Furthermore, preferential expression of GRP78 on the surface of tumor cells but not in normal organs suggests that surface GRP78 can serve both as a target as well as mediator for cancer-specific therapy. Recent reports further established that GRP78 forms complexes with specific proteins on the cell surface and plays an important role in signaling, impacting cell survival and proliferation. Burikhanov et al. (Cell 2009, 138:377) reported that Par-4, generally regarded as a cytosolic and nuclear protein that promotes cell death via the mitochondrial cell death pathway, is spontaneously secreted by normal and cancer cells and this process is enhanced by ER stress or with addition of TRAIL. It is proposed that ER stress, induced by extracellular insults such as TRAIL, causes translocation of the Par-4-GRP78 complex from the ER to the plasma membrane, and through a positive feedback loop, extracellular Par-4 binds to cell surface GRP78 and activates the extrinsic apoptotic pathway. In this journal club, we discuss some open questions and how these new findings integrate with current understanding of GRP78 function in vivo.
journal_name
Cancer Biol Therjournal_title
Cancer biology & therapyauthors
Lee ASdoi
10.4161/cbt.8.22.10140subject
Has Abstractpub_date
2009-11-01 00:00:00pages
2103-5issue
22eissn
1538-4047issn
1555-8576pii
10140journal_volume
8pub_type
杂志文章abstract::Vasculogenic mimicry reflects the plasticity of aggressive tumor cells that express vascular cell markers and line tumor vasculature; such has been demonstrated in aggressive ovarian carcinoma. This study measured the clinical significance of tumor cell-lined vasculature in ovarian carcinomas (n=77), which was detecte...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.316
更新日期:2002-11-01 00:00:00
abstract::The role of immunotherapy in combination with traditional treatment regime in improving the survival of cancer patients has attracted more and more attention. Especially the abscopal effect that describes the phenomenon of localized radiotherapy leading to regression of distant unirradiated tumors and the role of enha...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.1080/15384047.2016.1276133
更新日期:2017-03-04 00:00:00
abstract::Taxol (paclitaxel) and Taxotere (docetaxel) are considered as two of the most important anti-cancer chemotherapy drugs. The cytotoxic action of these drugs has been linked to their ability to inhibit microtubule depolymerization, causing growth arrest and subsequent cell death. Studies by a number of laboratories have...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.5.10.3215
更新日期:2006-10-01 00:00:00
abstract::Methyl-CpG binding domain protein 1 (MBD1) is a transcriptional regulator that binds methylated CpG islands of tumor suppressor genes and represses their transcription. In a former study, we found high expression of MBD1 in pancreatic cancer cell lines and tissues which may play an important role in the development of...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.8.7.7790
更新日期:2009-04-01 00:00:00
abstract::Bone metastases are a common occurrence in patients with breast cancer, lung cancer and prostate cancer. Bone metastases cause considerable morbidity including pain, impaired mobility, pathologic fracture, spinal cord or nerve root compression, bone marrow infiltration and hypercalcemia of malignancy. These complicati...
journal_title:Cancer biology & therapy
pub_type: 杂志文章,评审
doi:10.4161/cbt.5.9.3308
更新日期:2006-09-01 00:00:00
abstract::In order to demonstrate the role of the pituitary tumor transforming gene 1 (PTTG1) in the development of hepatocellular carcinoma (HCC) and its value as a molecular target for cancer therapy, we analyzed the expression of PTTG1 mRNA and protein, and their relation to clinicopathological characteristics and basic fibr...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.11.3.14102
更新日期:2011-02-01 00:00:00
abstract::DNA methylation at the 5 position of cytosine (5-mC) has emerged as a key epigenetic marker that plays essential roles in various biological and pathological processes. 5-mC can be converted to 5-hydroxymethylcytosine (5-hmC) by the ten-eleven translocation (TET) family proteins, which is now widely recognized as the ...
journal_title:Cancer biology & therapy
pub_type: 杂志文章,评审
doi:10.4161/cbt.27144
更新日期:2014-01-01 00:00:00
abstract:OBJECTIVES:To determine the effects of adenovirus-mediated transfer of p14(ARF) and p16(INK4a) on growth and apoptosis of human pancreatic carcinoma cell lines. RESULTS:Pancreatic carcinoma cell lines, PC-7, PANC-1 and MIA PaCa-2 (p14(ARF)-/- and p16(INK4a)-/-), were used. PC-7 (p53 wt) and MIA PaCa-2 (p53 mt) cells i...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.4.12.2183
更新日期:2005-12-01 00:00:00
abstract::Causes for the complex phenotypes of cancers, such as altered differentiation, invasion and metastasis, are not known, and multigenic defects are likely. In contrast, well-defined deficiencies, such as those affecting DNA-repair mechanisms and enzymatic pathways, are simple, typically caused by one or a few gene mutat...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.8.4.7346
更新日期:2009-02-01 00:00:00
abstract::The present studies have examined approaches to suppress MCL-1 function in breast cancer cells, as a means to promote tumor cell death. Treatment of breast cancer cells with CDK inhibitors (flavopiridol; roscovitine) enhanced the lethality of the ERBB1 inhibitor lapatinib in a synergistic fashion. CDK inhibitors inter...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.10.9.13273
更新日期:2010-11-01 00:00:00
abstract::Chemotherapy in prostate cancer (CaP) even as an adjunct has not been a success. In this communication, we report the pre-clinical efficacy of a nitroacridine derivative, C-1748 (9[2'-hydroxyethylamino]-4-methyl-1-nitroacridine) in CaP cell culture and human xenograft animal models. C-1748, a DNA intercalating agent h...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.6.10.4790
更新日期:2007-10-01 00:00:00
abstract::Ecto-5'-nucleotidase (CD73) was overexpressed in malignancies of epithelial origin and was involved in a variety of cellular processes such as cytoprotection and anti-inflammation. In the present study, human mammary T-47D cells were transfected with pcDNA-NT5E to establish a CD73 overexpressed cell model. Short small...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.6.3.3762
更新日期:2007-03-01 00:00:00
abstract::Antivascular therapy provides a promising method for anticancer therapy. But targeting to gastric cancer vessels is nonselective due in part to the lack of specific cell-surface receptors identified on target vascular cells. Herein we used in vivo screening of phage displayed peptide library to identify some peptides ...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.3.12.1223
更新日期:2004-12-01 00:00:00
abstract::TPCK is widely used as an inhibitor of chymotrypsin-like proteases but has recently been identified as an inhibitor of the PDK1/Akt pathway. In this study, we show that TPCK inhibits TRAIL-induced caspase activity but potentiates wortmannin-dependent caspase activity in prostatic carcinoma cell lines. The inhibitory a...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.3.8.970
更新日期:2004-08-01 00:00:00
abstract::Several agents targeting the epidermal growth factor receptor (EGFR) have been FDA-approved to treat cancer patients with varying tumor types including metastatic colorectal cancer. Many patients treated with anti-EGFR therapy however do not respond and those that do initially respond often acquire resistance. Here we...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.28179
更新日期:2014-05-01 00:00:00
abstract::Cytotoxic chemotherapeutic drugs, especially when used in combination, are widely employed to treat a variety of cancers in patients but often lead to serious symptoms that negatively affect physical functioning and quality of life. There is compelling evidence that implicates cytotoxic chemotherapy-induced inflammati...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.29922
更新日期:2014-10-01 00:00:00
abstract::Background: Associations between polymorphisms in interleukin-10 (IL-10) and hematological oncology were already explored by many genetic association studies, with controversial findings. The aim of this meta-analysis was to more comprehensively analyze associations between polymorphisms in IL-10 and hematological onc...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.1080/15384047.2019.1702404
更新日期:2020-04-02 00:00:00
abstract:BACKGROUND AND AIM:Widespread applicability of tissue-based mRNA expression screening for Barrett esophagus (BE) is likely to require (1) accurate methods for assaying archival formalin-fixed, paraffin-embedded (FFPE) histopathology specimens taken at endoscopy, and (2) validation studies of promising biomarkers in dif...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.10.2.12166
更新日期:2010-07-15 00:00:00
abstract::Recently, we showed that the metal chelator TPEN targets colon cancer cells through redox cycling of copper. Here, we studied the DNA damage potential of TPEN and deciphered the role of Chk1, ATM and DNA-PK in TPEN-induced toxicity in 3 human colon cancer cell lines, HCT116, SW480 and HT29. We also investigated the ro...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.1080/15384047.2016.1235658
更新日期:2016-11-01 00:00:00
abstract::We report 3 cases of durable complete response (CR) in patients with BRAF-mutated metastatic melanoma who were initially treated unsuccessfully with sequential immunotherapies (high dose interleukin 2 followed by ipilimumab with or without concurrent radiation therapy). After progression during or post immunotherapy, ...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.1080/15384047.2015.1026507
更新日期:2015-01-01 00:00:00
abstract::The six-transmembrane epithelial antigen of prostate 2 (STEAP2) protein was identified in advanced prostate cancer, and is highly over-expressed in various types of cancer. This study aimed to investigate the prognostic value and the function of STEAP2 in breast cancer. STEAP2 mRNA and protein expressions in breast no...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.1080/15384047.2019.1685290
更新日期:2020-01-01 00:00:00
abstract::Understanding molecular mechanisms involved in melanoma resistance to drugs is a big challenge. Experimental evidences suggested a correlation between mutational status in B-RAF and melanoma cell susceptibility to drugs, such as paclitaxel, doxorubicin and temozolomide, which generate an accumulation of hydrogen perox...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.1080/15384047.2015.1030546
更新日期:2015-01-01 00:00:00
abstract::Activation of MAP kinases is involved in various cellular processes, including immunoregulation, inflammation, cell growth, cell differentiation, and cell death. To investigate the role of p38 MAP kinase activation in the signaling pathway of TRAIL-mediated apoptosis, we compared TRAIL-mediated MAP kinase activation i...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.3.3.696
更新日期:2004-03-01 00:00:00
abstract::A number of discoveries have clarified the molecular mechanism of apoptosis, thus clarifying the link between apoptosis and therapeutic outcome. Even though apoptosis is thought to play a major role in anticancer therapy, the clinical relevance of induction of apoptosis remains uncertain, particularly in solid tumors....
journal_title:Cancer biology & therapy
pub_type: 杂志文章,评审
doi:10.4161/cbt.5.11.3456
更新日期:2006-11-01 00:00:00
abstract::Multiple Myeloma (MM) is a progressive malignancy with poor prognosis, commonly treated by the use of the glucocorticoid Dexamethasone. Myeloma cells resist Dexamethasone induced apoptosis when exposed to IL-6 or IGF-1, both of which are known to activate several signaling cascades. For the first time, we show the act...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.3.2.621
更新日期:2004-02-01 00:00:00
abstract:PURPOSE:The sensitivity of lung cancer to gefitinib has been found to be associated with mutations at the tyrosine kinase domain of epidermal growth factor receptor (EGFR), yet similar observations are not available in other solid tumors. We recently identified mutations in the EGFR kinase domain in primary esophageal ...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.5.2.2318
更新日期:2006-02-01 00:00:00
abstract::Fluids of body cavities result in a series of pathophysiological events associated with non-malignant and malignant conditions that lead to the formation of exudative effusion. Diagnosis of effusion from the patients is frequently troublesome for the cytologist because of the differentiation and biological behavior of...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.4.2.1573
更新日期:2005-02-01 00:00:00
abstract:OBJECTIVES:Due to the absence of reliable and accurate biomarkers for the early detection of liver malignancy, circulating microRNAs have recently emerged as great candidates for prompt cancer identification. Therefore, the aim of this study was to investigate the potential of liver-specific circulating microRNAs as an...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.1080/15384047.2018.1423922
更新日期:2018-05-04 00:00:00
abstract::Tumor formation in immunocompetent hosts is believed to be dependent on the ability of tumor cells to evade the immune system, as suggested by the alterations of expression of the major histocompatibility complex (MHC) and related molecules in a number of cancers. Our previous serial analysis of gene expression (SAGE)...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.4161/cbt.3.10.1142
更新日期:2004-10-01 00:00:00
abstract::Both Pten and Nras are downstream mediators of receptor tyrosine kinase activation that plays important roles in controlling cell survival and proliferation. Here, we investigated whether and how Pten loss cross-talks with Nras activation in driving liver cancer development in mice. Somatic disruption of hepatic Pten ...
journal_title:Cancer biology & therapy
pub_type: 杂志文章
doi:10.1080/15384047.2017.1323597
更新日期:2017-07-03 00:00:00