Cancer Cell Research (Online ISSN: 2161-2609)
Current Issue
Vol.6 No.21
Article: The function of phenotypic plasticity in tumor cells
by Jie Yu, Fen Yu, Lin Shi, Nianrong Luo, Yongxia Chen, Xia Liu, Yongfeng Jia
Cancer Cell Research 2019 6(21) 529-535; published online 7 January 2019
Abstract:
Tumor is an increasingly common disease in today's society,
it is also one of the major serious diseases do harm to
human beings. But people still know little about how tumor
cells work after lots of efforts were put to understand
them. There is one primarily interrelated theme found on a
combination of clinical and experimental observations of
phenotypic plasticity. Changes of phenotypic plasticity
might be induced by Epithelial-mesenchymal transition (EMT),
cancer stem cells (CSCs), and vasculogenic mimicry (VM), or
they interacted together, at least partly. Although they
have important impacts on tumor biology, the clinical
relevance of these concepts remains to be recapitulated. In
this review, we will update the current state of
correlations between EMT, CSCs, and VM formation with a
focus on their contributions to phenotypic plasticity, their
clinical implications for the design of therapeutic
strategies will also be discussed.
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Article: Effects of blocking CXCL12/CXCR4, CXCR7 and ERK signaling pathways on the growth of subcutaneous xenografts in nude mice
by Bowen Zhu, Yu Huang, Jing Zheng, Lili Yan, Hui Lin, Qingyu Zhang
Cancer Cell Research 2019 6(21) 536-543; published online 27 January 2019
Abstract:
To study the inhibitory effects of blocking chemokine
pathways CXCL12/CXCR4, CXCR7 and intracellular ERK signaling
pathway on human endometrial carcinoma in nude mice.
Ishikawa cells suspension (7.5×107/ml) of endometrial cancer
were used to establish animal models. 30 nude mice were
randomly divided into the following five groups: AMD3100 (6
mg/kg), PD98059 (50 mg/kg), Anti-CXCR7 (1 ul/mouse),
AMD3100+Anti-CXCR7 (6 mg/kg+1 ul/mouse) and Nacl (etc.
volume of saline). These small molecule inhibitors were
intraperitoneally injected into the body. Tumor length and
short diameter to calculate tumor volume were measured every
three days for three weeks. At the end of the treatment
period, completely stripped the all tumors, weigh them and
the expression of Survivin in subcutaneous xenografts was
detected by western blotting and RT-PCR. The growth curve
and weight of the tumors in the experimental groups were
significantly lower than those in the control group
(P<0.01). The results of western blotting and RT-PCR
revealed that the expression levels of Survivin protein and
mRNA in subcutaneous xenografts of experimental groups were
down regulated compared with control group (P<0.01). There
were no significant difference in growth curves, weights,
tumor inhibition rates, Survivin protein and mRNA expression
of tumors between experimental groups (P>0.05). Blocking
CXCL12-specific receptors CXCR4, CXCR7 and intracellular ERK
signaling pathway can inhibit the growth of endometrial
carcinoma cells in vivo, this condition may be related to
the down-regulation of the apoptosis-inhibiting gene
Survivin.
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Review: Diet and Nutritional intervention in cancer epigenetics
by Yash Lalit Samtani
Cancer Cell Research 2019 6(21) 544-550; published online 27 January 2019
Abstract:
For long, it was believed that we are at the mercy of our
genes, that our genetic makeup is beyond our influence.
However, in recent years, the developing field of
epigenetics have proven otherwise. The epigenome is highly
susceptible to changes in environmental factors. Altered
epigenetic marks are responsible for altered gene
expression. Numerous studies suggest that deregulated
epigenetic modifications are present ubiquitously in
virtually all types of malignancies including cancer. In
fact, epigenetic changes appear to be present in nearly
every stage of cancer development. Thus, epigenetic therapy
for medicinal or chemopreventive purposes has grown to
become a subject of huge importance. A number of bioactive
dietary components are of particular interest in the field
of epigenetics (Nutriepigenomics). Many of these compounds
display anticancer properties and may play a role in cancer
prevention. Numerous studies suggest that a number of
nutritional compounds have epigenetic targets in cancer
cells. Importantly, emerging evidence strongly suggests that
consumption of dietary agents can alter normal epigenetic
states as well as reverse abnormal gene activation or
silencing. Epigenetic modifications induced by bioactive
food compounds are thought to be beneficial in cancer
prevention and therapy. This article will primarily focus on
dietary factors that have been demonstrated to influence the
epigenome and that may be used in conjunction with other
cancer prevention and chemotherapeutic therapies. Another
focus shall include how different stages of life affect the
influence of these factors on the epigenome.
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Article: Effect of Sodium Butyrate on Epithelial-Mesenchymal transformation in colorectal cancer cell line SW620
by Xuemei Zhao, Cuiping Liu, Chen Chen, Yang Song, Yifan Ci, Qianqian Li, Yang Meng, Xiaohan Liu
Cancer Cell Research 2019 6(21) 551-557; published online 28 January 2019
Abstract:
Butyric acid is produced by endogenous intestinal bacteria
during the fermentation of dietary fiber, and has been found
to have anticancer effects. The aim of the present study was
to identify that if sodium butyrate (NaB) affects
proliferation, migration, invasion, adhesion abilities and
epithelial-mesenchymal transition (EMT) in CRC cells
(SW620), and explore its possible mechanisms.In this study
SW620 cells were cultured in RPMl l640 medium containing 10%
fetal bovine serum in a 5% CO2 incubator at 37°C. SW620
cells were divided into 5 groups: control group, 1.25mM NaB
group, 2.5mM NaB group, 5mM NaB group and 10 mM NaB group.
The effect of NaB treatment on SW620 cells proliferation was
detected by CCK-8 assay. The functional role of NaB on SW620
cells motility was evaluated by wound healing assay and
transwell migration assay. In addition, a Matrige invasion
assay was performed to characterize the invasion ability.
The adhesion ability between cells and extracellular matrix
was examined by cell-interstitial adhesion test. The protein
expression level of TGF-β, E-Cadherin and Vimentin were
measured by Western-Blot. The results demonstrated that
after treated by different concentrations (1.25mM, 2.5 mM,
5mM,10mM) of NaB for 24h, the proliferation rates of SW620
cells were inhibited significantly (P<0.05). Compared to the
control group, the abilities of migration, invasion and
adhesion of SW620 cells lines in other groups were gradually
decreased, respectively (P<0.05). Western-Blot assay showed
that NaB could significantly inhibit the expression of TGF-β
and Vimentin protein and promote the expression of
E-Cadherin in SW620 cells (P<0.05). There was a dose-effect
relationship between the concentration and effect of NaB on
SW620 cells in all the above experiments. These findings
indicate that NaB can inhibit the abilities of migration,
invasion and adhesion of SW620 cells. In addition, NaB can
inhibit the EMT of CRC cells by down-regulating the
expression of TGF-β and Vimentin protein and up-regulating
the expression of E-Cadherin protein.
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Review : Normalization time window of recombinant human endostatin: an overview
by Lang He
Cancer Cell Research 2019 6(21) 558-564; published online 8 March 2019
Abstract:
Anti-angiogenic therapy has emerged as the research frontier
of cancer treatment with the concept of starving tumor cells
by suppressing tumor neovascularization. It is well known
that tumor blood vessels are different from regular blood
vessels in terms of structure and function. With the advance
of anti-angiogenic research, it was discovered that
anti-angiogenic agents could transiently normalize tumor
blood vessels to be structurally and functionally similar to
regular blood vessels. This short period is called
normalization time window of tumor vasculature. Accumulating
evidence supports that administering anti-angiogenic drugs
combined with radiotherapy or chemotherapy in the
normalization time window enhances efficacy of cancer
therapeutics. Recombinant human endostatin (rh-ES) is a
novel anti-angiogenic agent with complete independent
intellectual property rights in China. It is of vital
importance to determine the normalization time window of
rh-ES to guide clinical planning and treatment in the
future. The recent progress in normalization time window of
rh-ES was comprehensively reviewed.
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Article: Esophageal cancer associated with right aortic arch: a surgical treatment case report and literature review
by Xiaotong Liu, Shuo Sun, Dongyang Zhang, Zhaoyun Sun, Jianwei Du, Wenjie Jiao, Linhao Xu
Cancer Cell Research 2019 6(21) 565-568; published online 8 March 2019
Abstract:
Esophageal cancer is one of the six major malignant tumors
worldwide. Radical resection is regarded as an effective
treatment method for patients with good general condition
and no proof of metastasis. Because esophageal cancer is
separated from the location of the left descending aorta,
the operative approach is divided into the following three
main types: triple incision approach (trans-cervix, right
thorax and abdomen) for upper esophageal cancer, double
incision approach (trans-right thorax and abdomen) for
middle esophageal cancer and single incision approach
(trans-left thorax) for lower esophageal or cardia cancer. A
right aortic arch is a rare vascular malformation, and the
incidence of a right aortic arch associated with esophageal
cancer is even rarer. This anatomical abnormality has driven
thoracic surgeons worldwide to explore and discuss the best
choice of surgical method. Here, we introduce one case of
surgical treatment of esophageal cancer associated with
right aortic arch (RAA) that has been integrated with the
theory of enhanced recovery after surgery (ERAS).
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