ABSTRACT
Metastasis is the main cause of poor prognosis of malignant tumors， and intervention with metastasis is the key measure in the treatment of malignant tumors. Hematogenous metastasis， the most common tumor metastasis， falls into the category of "Chuanshe" in traditional Chinese medicine （TCM）， with Qi deficiency and blood stasis as the critical pathogenesis. In the fight against malignant tumors， TCM emphasizes the reinforcement of healthy Qi and the elimination of pathogenic factors， exhibiting its action advantages of multiple targets， multiple mechanisms， and multiple levels. Extensive clinical evidence has shown the exact efficacy of Chinese herbal compounds designed for invigorating Qi and activating blood in delaying the progression of tumor disease and prolonging the survival period of patients. In view of the important role of hematogenous metastasis in the prognosis of tumors， more and more studies have explored the effects and mechanisms of Chinese herbal compounds capable of invigorating Qi and activating blood in intervening in hematogenous metastasis. This paper summarized the relevant literature reports in China and abroad on the intervention of Chinese herbal compounds capable of invigorating Qi and activating blood in the hematogenous metastasis of malignant tumors， in order to provide a theoretical basis for the clinical application of Qi-invigorating and blood-activating therapy in the treatment of malignant tumors. It has been found that Chinese herbal compounds formulated for invigorating qi and activating blood are effective in hindering several key steps in hematogenous metastasis through various mechanisms， including regulating the expression of cell adhesion molecules， inhibiting extracellular matrix degradation and angiogenesis， enhancing the killing effect of immunity， and improving blood hypercoagulability and hyperviscosity. Furthermore， the combination of invigorating Qi and activating blood targets the pathogenesis essence （Qi deficiency and blood stasis， characterized by sthenia in origin and asthenia in superficiality） of malignant tumor much better. Some comparative studies have demonstrated that the anti-metastasis effect of Qi-invigorating and blood-activating therapy is significantly stronger than that of the Qi-invigorating or blood-activating therapy alone， and such combination avoids the possible risk of the metastasis of malignant tumors triggered by the use of either of them. This study has provided some reference for the current clinical application of TCM for improving the prognosis of malignant tumors.
ABSTRACT
Tumor metastasis is an important cause of death in tumor patients. Once metastasis occurs, cancer will become more difficult to treat. Many studies have observed circulating tumor cells (CTCs) in the circulatory system of patients with metastasis. CTCs may occasionally appear in the form of clusters during the process of hematogenous metastasis. These aggregated tumor cell clusters have higher efficacy than the single CTC. The development of circulating tumor cell cluster capture technology provides new insights into tumor metastasis. The molecular mechanism of CTC clusters formation and their role in tumor hematogenous metastasis are discussed here, and their use as biomarkers and target in therapy is evaluated.
ABSTRACT
Objective To investigate the predictive value of metabolic tumor volume (MTV) in angiogenesis and hematoge‐nous metastasis of patients with colorectal cancer .Methods Totally 108 patients with colorectal cancer from January 2011 to De‐cember 2015 were enrolled into the study and divided into metastasis group (n=42) and non‐metastasis group (n=66) according to whether combining with hematogenous metastasis .All patients received 18 F‐2‐fluoro‐D‐glucose positron emission tomography/com‐puted tomography (18F‐FDG PET/CT) before operation ,then used the PET VERA software to automatically calculate MTV ac‐cording to the 40% of standard uptake value max(SUVmax ) as the threshold .The blood vessels were identified with CD34+ immu‐nohistochemical staining ,then measured the microvessel density (MVD) .The clinical pathologic data ,SUVmax ,MTV and MVD were compared between metastasis group and non‐metastasis group .The area under the receiver‐operating characteristic curve (AUC) was performed to evaluate the predictive value of MTV on hematogenous metastasis .Results SUVmax ,MTV and MVD in metastasis group were significantly higher than that in non‐metastasis group (P0 .05) ,MVD and SUVmax (r=0 .179 ,P=0 .064>0 .05) .AUC of MTV was 0 .736 ,and the best threshold value was 15 .016 cm3 ,whose sensitivity ,specificity ,positive predictive value ,negative predictive value and Youden index were 83 .3% ,63 .6% , 59 .3% ,85 .7% and 47 .0% respectively .Conclusion Compared with SUVmax ,MTV of colorectal cancer is associated with angio‐genesis and hematogenous metastasis ,so as to predict the prognosis of colorectal cancer ,which is worthy of clinical application .
ABSTRACT
Hematogenous metastasis is one of the most important ways for metastasis of tumor cells and this is a complex pathophysiological process. Tumor cells enter the bloodstream and move with the blood circulation, meanwhile interact with leukocyte, platelets via integrins, or directly interact with endothelial cells to cause a series of biological behaviors and promote the metastasis of tumor cells. These activated integrins, collaborating with other molecules (e.g. integrins, selectins, cytokines and chemokines), will induce various signal cascades to mediate tumor cell adhesion and migration, and form a new metastatic foci. Hence, better understanding of hematogenous metastasis process is of great significance for treating malignant metastasis of tumor cells and improving life of tumor patients. In this review, the roles of integrins during hematogenous metastasis of tumor cells and their signal transduction were summarized, and new perspectives for future investigation were also discussed. The elucidation about the mechanism of hematogenous metastasis of tumor cells will help to provide a rational basis for anticancer drug development and drug target discovery.
ABSTRACT
The expression of sLea/x which correlates with conventional histopathologic parameters serves as a useful indicator for the prognosis of metastatic disease. The bindings between sLea/x and their common ligand E-selectin initiate hematogenous metastasis of cancer. Certain bioactive conformation is crucial for the interaction between sLea/x and their ligands. Thus, a new class of compounds that mimic the structures of sLea/x can potently inhibit not only their functional bindings to selectins, but also the metastasis of cancer. This review is mainly on the sLea/x molecular structure,biosynthesis,distribution, especially the relationship between sLea/x and hematogenous metastasis of cancer and the design of drugs that mimic the structures of sLea/x.
ABSTRACT
Adeonoid cystic carcinoma (ACC) is one of the most common malignant tumors of salivary glands. It is characterized by a relentless regrowth especially around nerve tissues and a high rate of hematogenous distant metastasis. Clinically most deaths from salivary ACC are caused by delayed lung metastases that are resistant to conventional chemotherapy. So, knowledge of cellular and molecular properties that influence the dissemination of metastatic tumor cells, is important for new treatment strategies of metastatic lesions. We determined expressions of angiogenic signaling molecules microvessel density (MVD) using surgical specimens of human salivary ACC. Protein expressions of vascular endothelial growth factor (VEGF), VEGF receptor (VEGFR)-2, activated VEGFR-2, and human CD31 were assessed in 20 cases of salivary ACC by immunohistochemical staining. Most of the tumors, especially ACC with a tubulocribriform pattern, were positive for antibodies of VEGF, VEGFR-2, and activated VEGFR-2. The overall percentages of the 20 specimens expressing VEGF, VEGFR-2, activated VEGFR-2 were 90, 95, and 95%, respectively. Immunoreactivities of the biomarkers in salivary ACC were higher than those in normal salivary gland. Furthermore, immune-related cells as well as tumor cells expressed VEGF/VEGFR-2. Microvessel density of salivary ACC was higher than that of normal salivary gland (P<0.05). Taken together, angiogenic signaling molecules are actively expressed in salivary ACC. And we suggest that these molecules may have critical role in the hematogenous spread of salivay ACC, which has a propensity for delayed lung metastasis. Therefore, these biomarkers can be molecular targets for therapy of metastasis of salivary ACC.
Subject(s)
Humans , Adenoids , Antibodies , Biomarkers , Carcinoma, Adenoid Cystic , Drug Therapy , Lung , Microvessels , Neoplasm Metastasis , Nerve Tissue , Receptors, Vascular Endothelial Growth Factor , Salivary Glands , Vascular Endothelial Growth Factor A , Vascular Endothelial Growth Factor Receptor-2ABSTRACT
Objective :To Study the Relationship between the Qi Deficiency and Blood Stasis Syndrome and artificial hematogenous metastasis of colon cancer by establishing a compound model of Qi Deficiency and Blood Stasis Syndrome and artificial hematogenous metastasis of colon cancer. Methods:Thirty six eight-weeks old female Balb/c rats were divided into six groups randomly:control group ,stasis group,tumor groupA、B ,stasis and tumor groupA、B. We observed the survival time of tumor groupB and stasis and tumor groupB. At the 28th day,after killing the mice of the other groups,we detected the whole blood viscosity and the amounts of metastasis tubercle on lung. Results:The weight of the stasis group increase more slowly than control group(P