Micro RNAs in colorectal cancer:Role in metastasis and clinical perspectives

Colorectal cancer(CRC)is the third most common malignancy and the third leading cause of cancer related deaths in the United States.Almost 90%of the patients diagnosed with CRC die due to metastases.Micro RNAs(mi RNAs)are evolutionarily conserved molecules that modulate the expression of their target genes post-transcriptionally,and they may participate in various physiological and pathological processes including CRC metastasis by influencing various factors in the human body.Recently,the role mi RNAs play throughout the CRC metastatic cascade has gain attention.Many studies have been published to link them with CRC metastasis.In this review,we will briefly discuss metastatic steps in the light of mi RNAs,along with their target genes.We will discuss how the aberration in the expression of mi RNAs leads to the formation of CRC by effecting the regulation of their target genes.As mi RNAs are being exploited for diagnosis,prognosis,and monitoring of cancer and other diseases,their high tissue specificity and critical role in oncogenesis make them new biomarkers for the diagnosis and classification of cancer as well as for predicting patients’outcome.Mi RNA signatures have been identified for many human tumors including CRC,and mi RNA-based therapies to treat cancer have been emphasized lately.These will also be discussed in this review.

Retreatment of a patient who presented with synchronous multiple primary colorectal carcinoma: report of a case

It is well known that one-stage resection of synchronous multiple primary colorectal carcinoma is an ideal choice if the patient＇s physical condition is not bad. Detailed examination of the whole intestinal tract is very important for patients with colorectal cancer, which could prevent patients from receiving repeat treatment to a great extent. We present a case report of a patient with synchronous primary colorectal cancer. Because pre-or intra-operative examination is not sufficient at his first consultation, the patient had undergone multiple operations after receiving chemotherapy, radiotherapy and intestinal stent insertion, which results in peritoneal adhesions formation. The preoperative placement of prophylactic ureteral catheters facilitated recognition of ureters in operation that assure the prevention of ureteral injuries. If not aware of the importance of detailed preoperative examination and standardized treatment can lead to wrong treatment as in this case. Prophylactic ureteral catheters might assist in their immediate recognition.

Efficacy of bioactive compounds of Chaihu(Radix Bupleuri Chinensis)on glaucomatous optic atrophy through interleukin-6/hypoxia inducible factor-1αsignal pathway

OBJECTIVE:To investigate the bioactive compounds of Chaihu(Radix Bupleuri Chinensis)(RB)on glaucomatous optic atrophy(GOA),and to study the pharmacological mechanism.METHODS:We collected information on the bioactive compounds of RB from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform(TCMSP).Targets related to bioactive compounds and GOA were also obtained.Gene Ontology(GO),Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway and network analyses were performed to investigate the potential mechanism of RB against GOA.Subsequently,the main bioactive compounds of RB and targets of GOA were docked by Autodock software.Moreover,a GOA model of retinal ganglion cells(RGCs)induced by cobalt chloride was established to verify the effect of RB on GOA.RESULTS:There were 17 main bioactive compounds and 46 key targets were screened as potential players in GOA.The compound-target network mainly contained 17 compounds and 46 corresponding targets,and the key targets consisted of interleukin-6(IL-6),hypoxia inducible factor-1α(HIF1A),Caspase-3,estrogen receptor alpha(ESR1),MYC proto-oncogene(MYC),and vascular endothelial growth factor A(VEGFA).Forty-nine significantly enriched GO terms,and 134 KEGG signaling pathways were identified(P<0.05),including HIF-1,tumor necrosis factor,VEGF,prolaction,and other signaling pathways.Molecular docking results showed that the main bioactive compounds of RB exhibited the strongest binding activity with IL-6.Furthermore,experimental validation showed that the RB extract inhibited the activity and promoted apoptosis of RGCs in a dose-dependent manner.The RB extract also suppressed the expression of Bax,Caspase-3,and Caspase-9 and regulated malonaldehyde,superoxide dismutase,and glutathione peroxide by inhibiting the IL-6/HIF-1αsignaling pathway.CONCLUSIONS:The present study provided insights into the mechanism of RB on GOA.RB mainly reverses GOA by inhibiting the IL-6/HIF-1αsignaling pathway.

Micro RNAs in colorectal cancer

Introduction In 2008 over 1.2 million new cases along with 608 700 estimated CRC-associated deaths have occurred.In China,where it is now the third most common malignancy and the fifth leading cause of cancer-related death,the incidence of CRC is still increasing even with the improvements in the standard of living and changes in lifestyle.Despite improvements in