• Title/Summary/Keyword: anti-tumor growth

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Anti-tumor Efficacy of a Hepatocellular Carcinoma Vaccine Based on Dendritic Cells Combined with Tumor-derived Autophagosomes in Murine Models

  • Su, Shu;Zhou, Hao;Xue, Meng;Liu, Jing-Yu;Ding, Lei;Cao, Meng;Zhou, Zhen-Xian;Hu, Hong-Min;Wang, Li-Xin
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.5
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    • pp.3109-3116
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    • 2013
  • The majority of hepatocellular carcinoma (HCC) patients have a poor prognosis with current therapies, and new approaches are urgently needed. We have developed a novel therapeutic cancer vaccine platform based on tumor cell derived autophagosomes (DRibbles) for cancer immunotherapy. We here evaluated the effectiveness of DRibbles-pulsed dendritic cell (DC) immunization to induce anti-tumor immunity in BALB/c mouse HCC and humanized HCC mouse models generated by transplantation of human HCC cells (HepG2) into BALB/c-nu mice. DRibbles were enriched from H22 or BNL cells, BALB/c-derived HCC cell lines, by inducing autophagy and blocking protein degradation. DRibbles-pulsed DC immunization induced a specific T cell response against HCC and resulted in significant inhibition of tumor growth compared to mice treated with DCs alone. Antitumor efficacy of the DCs-DRibbles vaccine was also demonstrated in a humanized HCC mouse model. The results indicated that HCC/DRibbles-pulsed DCs immunotherapy might be useful for suppressing the growth of residual tumors after primary therapy of human HCC.

The mechanism of human neural stem cell secretomes improves neuropathic pain and locomotor function in spinal cord injury rat models: through antioxidant, anti-inflammatory, anti-matrix degradation, and neurotrophic activities

  • I Nyoman Semita;Dwikora Novembri Utomo;Heri Suroto;I Ketut Sudiana;Parama Gandi
    • The Korean Journal of Pain
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    • v.36 no.1
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    • pp.72-83
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    • 2023
  • Background: Globally, spinal cord injury (SCI) results in a big burden, including 90% suffering permanent disability, and 60%-69% experiencing neuropathic pain. The main causes are oxidative stress, inflammation, and degeneration. The efficacy of the stem cell secretome is promising, but the role of human neural stem cell (HNSC)-secretome in neuropathic pain is unclear. This study evaluated how the mechanism of HNSC-secretome improves neuropathic pain and locomotor function in SCI rat models through antioxidant, anti-inflammatory, anti-matrix degradation, and neurotrophic activities. Methods: A proper experimental study investigated 15 Rattus norvegicus divided into normal, control, and treatment groups (30 µL HNSC-secretome, intrathecal in the level of T10, three days post-traumatic SCI). Twenty-eight days post-injury, specimens were collected, and matrix metalloproteinase (MMP)-9, F2-Isoprostanes, tumor necrosis factor (TNF)-α, transforming growth factor (TGF)-β, and brain derived neurotrophic factor (BDNF) were analyzed. Locomotor recovery was evaluated via Basso, Beattie, and Bresnahan scores. Neuropathic pain was evaluated using the Rat Grimace Scale. Results: The HNSC-secretome could improve locomotor recovery and neuropathic pain, decrease F2-Isoprostane (antioxidant), decrease MMP-9 and TNF-α (anti-inflammatory), as well as modulate TGF-β and BDNF (neurotrophic factor). Moreover, HNSC-secretomes maintain the extracellular matrix of SCI by reducing the matrix degradation effect of MMP-9 and increasing the collagen formation effect of TGF-β as a resistor of glial scar formation. Conclusions: The present study demonstrated the mechanism of HNSC-secretome in improving neuropathic pain and locomotor function in SCI through antioxidant, anti-inflammatory, anti-matrix degradation, and neurotrophic activities.

The Anticancer Effects and Drug Metabolic Enzyme Change by Intraperitoneal Injection of Agrimonia Pilosa Ledeb (선학초 (짚신나물) 복강주사의 항암효과 탐색 및 약물 대사효소의 변화)

  • Choi, Jung-Won;Jang, Bo-Hyung;Lee, Ju-Ah;Ko, Ho-Yeon;Jung, Hee;Jun, Chan-Yong;Park, Jong-Hyung;Kim, Ji-Hye;Ko, Seong-Gyu;Choi, You-Kyung
    • The Journal of Korean Medicine
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    • v.30 no.4
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    • pp.129-141
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    • 2009
  • Objective: This study was to investigate the anti-tumor effect, safety, safety, mechanism and metabolizing enzyme of Agrimonia pilosa LEDEB (APL) in female C57B/L mouse tumor (in vivo). Method: First, to evaluate the antitumor activity of APL, we divided the mice into four groups: normal, control, APL50 (50mg/kg), and APL100 (100mg/kg). LLC-obtained American Type Culture Collection was used. LLC had been inoculated to induce tumors. To measure the anti-tumor effect of APL, we calibrated tumor size and weight. To analyze the mechanism of anti-tumor in APL, we used western blotting and to observe metabolizing enzyme in APL we used to real-time PCR. Result: APL50 and APL100 significantly inhibited tumor growth from 12 days after medicine injected. APL did not induce caspase-dependent apoptosis in LLC-bearing mouse tumor. In APL100, it decreased 41% and 71% in CYP2D22 and CYP3A11, respectively. Conclusion: These results suggest that APL has some anti-tumor effects in female C57B/L mouse tumor. APL should be used carefully with other drugs related with CYP2D22 and CYP3A11.

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The Anticancer Effects and Drug Metabolic Enzyme Change by Oral Intake of Agrimonia Pilosa Ledeb (선학초(짚신나물) 경구투여시 항암효과 탐색 및 약물 대사효소의 변화)

  • Rhee, Si-Hyung;Jung, Hee;Lee, Ju-Ah;Go, Ho-Yeon;Choi, Yu-Kyung;Park, Jong-Hyung;Kim, Ji-Hye;Ko, Seong-Kyu;Jun, Chan-Yong
    • Journal of Society of Preventive Korean Medicine
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    • v.13 no.2
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    • pp.51-64
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    • 2009
  • Objective : This research was aimed to investigate the anti-tumor effect, safety, mechanism and metabolizing enzyme of Agrimonia pilosa LEDEB(APL) in female C57B/L mouse. Methods : At first, to evaluate the anti-tumor activity of APL, we divided into four groups, normal, control, APL100(100mg/kg), APL150(150mg/kg). LLC obtained American Type Culture Collection was used. LLC had been inoculated to induce tumor. To measure the anti-tumor effect of APL, we calibrate tumor size and weight. To study for mechanism of anti-tumor in APL, we used western blotting and to know metabolizing enzyme in APL we used to real-time PCR. Results : APL100, APL150 inhibited tumor growth after medicine injected. APL did not only induced caspase-dependent apoptosis in LLC-bearing mouse tumor. In APL100, it were decreased 72% in CYP3A11. In APL150, it were decreased 62%, 75% in CYP3A11 and MRP1a respectively. Conclusion : These results suggests that APL has some anti-tumor effects in female C57B/L mouse tumor. APL should be careful use with other drugs related with CYP3A11 or MRP1a.

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Anticancer Activity of Chloroform Fraction of Methanol Extract of Sparassis crispa in Human Cervical Cancer Stem Cells (자궁경부암 줄기세포에 대한 꽃송이버섯 메탄올 추출물의 클로로포름 분획의 항암 활성)

  • Han, Jang Mi;Kim, Sung Min;Kim, Hye Young;Baek, Seung Bae;Jung, Hye Jin
    • Korean Journal of Pharmacognosy
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    • v.53 no.1
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    • pp.21-28
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    • 2022
  • Sparassis crispa is an edible mushroom that has been widely utilized in Japan and Korea. It has various biological activities, such as anti-hypertensive, anti-allergic, anti-diabetic, anti-inflammatory, anti-angiogenic, and anti-cancer effects. In this study, we investigated the anticancer activity and underlying molecular mechanism of chloroform fraction of methanol extract of S. crispa (CESP) against cervical cancer stem cells (CSCs), which contribute to tumor initiation, recurrence, and resistance to therapy of human cervical cancer. CESP effectively inhibited the proliferation, tumorsphere formation, and migration of HeLa-derived cervical CSCs by promoting apoptosis. In addition, CESP significantly downregulated the expression of key cancer stemness markers, including integrin α6, CD133, CD44, ALDH1A1, Nanog, Oct-4, and Sox-2, in HeLa-derived cervical CSCs. Furthermore, CESP remarkably suppressed in vivo tumor growth of HeLa-derived cervical CSCs in a chick embryo chorioallantoic membrane (CAM) model. Therefore, our findings suggest that CESP has potential as a natural medicine for the prevention and treatment of cervical cancer by targeting CSCs.

Experimental Effects of Acanthopanax sessiliflorus $S_{EEM}$ Extracts Following Gamma-ray Irradiation on Immuno-stimulating and anti-tumor activity in mice (방사선(放射線)이 조사(照射)된 오갈피 나무의 추출물(抽出物)이 면역기능(免役機能) 및 항암(抗癌) 기능(機能)에 미치는 실험적(實驗的) 효과(效果))

  • Kim, Hyung-Woo;Han, Jin-Geun;Kim, Geo-Woong;Go, Hong-Gae;Jeong, Hyun-Woo;Cho, Su-In
    • The Korea Journal of Herbology
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    • v.22 no.1
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    • pp.63-70
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    • 2007
  • Objectives : This experimental study was designed to investigate the effects of Acanthopanax, sessiliflorus SEEM extracts following gamma-ray irradiation on immuno-stimulating and anti-tumor activity in terms of proliferation of tumor cells, thymocytes, splenocytes, and NO production from peritoneal macrophages in mice. Methods: 10AS and 100 AS were the bark powders of Acanthopanax sessiliflorus $S_{EEM}$ stems which were exposed in 10 kGy or 100 kGy of electron beam respectively. Results : Treatment with either 10AS or 100AS increased proliferation rates of thymocytes and splenocytes significantly, and treatment with l0AS also decreased proliferation rates of tumor cells significantly. Treatment with either l0AS or l00AS promoted NO production from peritoneal macrophages significantly. Conclusion : These results suggested that AS has direct inhibition effect of tumor growth and immuno-stimulating activity. In conclusion, we demonstrate that AS could be used to treat cancer patient as complementary or alternative medicine to typical anti-cancer medication.

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Effect of CP-2 Extracted from Coptis and Croton tiglium L. on the Growth and Steroidgenesis of Follicular Granulosa Cells (콥티스속 근경과 탈지된 클로톤 종자의 혼합 추출물(CP-2)이 난포 Granulosa Cell에 미치는 영향)

  • 김종배;김종배;문정조;한영복;김종배
    • Korean Journal of Animal Reproduction
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    • v.17 no.1
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    • pp.13-19
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    • 1993
  • We investigated the effects of CP-2 extracted from the mixture of Copis and Croton tiglium L, which showed very high cytotoxic effect to the various tumor cells, on the growth and steroidenesis of primary and transformed cell lines PA-GS6 and PO-GRS1 by cotransfectionwith SV40 and Ha ras oncogenes. CP-2 inhibited the growth of PA-GS6 and PO-GRS1 in a dose dependent manner when the growth of them was measured by cell number and by protein content, while CP-2 did not affect the growth of primary granulose cells. Productions of progesterone ofprimary and transformed granulosa cells were stimulated by forskolin, but this stimulatory effect was blocked by treatment of CP-2. Clinical application of CP-2 asa new anti-cancer drug and utilization of transformed granulosa cells as a model system for the screening of anti-cancer drug were also discussed.

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Curcumin Induces Apoptosis and Inhibits Growth of Human Burkitt's Lymphoma in Xenograft Mouse Model

  • Li, Zai-xin;Ouyang, Ke-qing;Jiang, Xv;Wang, Dong;Hu, Yinghe
    • Molecules and Cells
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    • v.27 no.3
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    • pp.283-289
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    • 2009
  • Curcumin, a natural compound extracted from rhizomes of curcuma Curcuma species, has been shown to possess potent anti-inflammatory, anti-tumor and anti-oxidative properties. However, the mechanism of action of the compound remains poorly understood. In this report, we have analyzed the effects of curcumin on the cell proliferation of Burkitt's lymphoma Raji cells. The results demonstrated that curcumin could effectively inhibit the growth of Raji cells in a dose- and time-dependent manner. Further studies indicated that curcumin treatment resulted in apoptosis of cells. Biochemical analysis showed that the expression of Bax, Bid and cytochrome C were up-regulated, while the expression of oncogene c-Myc was down regulated after curcumin treatment. Furthermore, poly (ADP-ribose) polymerase (PARP) cleavage was induced by the compound. Interestingly, the antiapoptotic Bcl-2 expression was not significantly changed in Raji cells after curcumin treatment. These results suggested that the mechanism of action of curcumin was to induce mitochondrial damage and therefore led to Raji cell apoptosis. We further investigated the in vivo effects of curcumin on the growth of xenograft tumors in nude mice. The results showed that curcumin could effectively inhibit tumor growth in the xenograft mouse model. The overall results showed that curcumin could suppress the growth of Burkitt's lymphoma cells in both in vitro and in vivo systems.

Anti-tumor Effects of Vascular Endothelial Growth Factor Receptor-3 Inhibitor on Oral Cancer Cells (구강암 세포에서 혈관내피성장인자 수용체-3 억제제의 항종양 효과)

  • Kim, Chan-Woo;Kim, Seong-Gon;Park, Young-Wook
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.34 no.4
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    • pp.239-245
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    • 2012
  • Purpose: Vascular endothelial growth factor (VEGF) plays a key role in tumor angiogenesis and lymphangiogenesis including induction of endothelial cell proliferation, migration and capillary tube formation. E7080 (S1164, Selleck chemical, Houston, TX, USA) is a muti-targeted kinase inhibitor, which targets VEGF receptor-2, 3 (VEGFR-2, 3) and inhibits survival and proliferation of tumor cell. The purpose of this study was to determine the anti-tumor effect of E7080 on oral squamous cell carcinoma. Methods: An oral squamous cell carcinoma cell line, SCC-9 was used in this study. E7080 was applied to SCC-9 cells by 3 different concentrations (1, 5, 10 ${\mu}g/mL$). Control means no application of E7080. The cellular growth was evaluated by real-time cell electronic sensing and MTT assay. The signal transduction was evaluated by Western blotting. Results: In experimental group, SCC-9 cell proliferation was decreased and the VEGFR-3 downstream pathways were inhibited compared with control. Furthermore, increasing the concentration of E7080, the ability of E7080 to disturbance of SCC-9 cell proliferation was increased. Conclusion: Proliferation of SCC-9 cells was inhibited by E7080, which was through by inhibition of VEGFR-3 downstream pathway. In vivo study with E7080 will be required to provide therapeutic benefits in oral squamous cell carcinoma.

Anti-Cancer Effects of Salvia Miltiorrhiza, Carydalis Turtschaminovii, Reynoutria Elliptica Herbal Acupuncture on Solid Tumor of Rats induced by Injection of RK3E-ras Cells (RK3E-ras cells로 유발된 흰쥐의 고형종양에 대한 단삼, 현호색, 호장근 약침의 항종양 효과)

  • Park, Soo-Gon;Shin, Mi-Suk;Choi, Jin-Bong;Kim, Sun-Jong
    • Journal of Korean Medicine Rehabilitation
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    • v.19 no.1
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    • pp.91-102
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    • 2009
  • Objectives : The present study was carried out investigate the anti-cancer effect of Salvia miltiorrhiza, Carydalis turtschaminovii and Reynoutria elliptica herbal acupuncture on solid tumor of rats induced by injection of RK3E-ras cells. Methods : RK3E-ras cells were injected on the right lumbar region of rats. After 1 weeks, the experimental rats were divided into four groups : Control group, Salvia miltiorrhiza herbal acupuncture group(SM), Carydalis turtschaminovii herbal acupuncture group(CT), Reynoutria elliptica herbal acupuncture group(RE). And we investigated the weight and size of tumor tissue, gross anatomy, histological and PCNA immunohistochemical study, hepatic and renal metastasis for tumor of each group. Results : 1. In the weight of tumor tissue assessment, SM and CT's weight of tumor tissue was decreased. 2. In the size of tumor tissue assessment, SM was smaller than any other group. 3. In the histological observation, SM's formation of tunica fibrosa that surround the tumor cell was obvious and vasculature that developes circumference of tumor cell was not observed, and density of tumor cell was very low. 4. In the PCNA immunohistochemical study, Control group, SM, RE showed strong immune response in the central site of tumor tissue. 5. In observation of liver and kidney tissue, we were not able to observe tumor cell in the SM. Conclusions : Consequently, SM and CT showed a inhibition of growth and metastasis.