LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 12

Search options

  1. Article ; Online: Immunohistochemical Expressions of Senescence-Associated Secretory Phenotype and Its Association With Immune Microenvironments and Clinicopathological Factors in Invasive Breast Cancer.

    Park, Min Hui / Choi, Jung Eun / Kim, Jae-Ryong / Bae, Young Kyung

    Pathology oncology research : POR

    2021  Volume 27, Page(s) 1609795

    Abstract: This study was undertaken to investigate immunohistochemical expression of the senescence-associated secretory phenotype (SASP) in invasive breast cancer (IBC) tissues and to determine relationships between SASP positivity and tumor microenvironments and ...

    Abstract This study was undertaken to investigate immunohistochemical expression of the senescence-associated secretory phenotype (SASP) in invasive breast cancer (IBC) tissues and to determine relationships between SASP positivity and tumor microenvironments and the clinicopathological characteristics of IBC. Immunohistochemistry for senescence markers, that is, high mobility group box-1 (HMGB1), p16, p15, and decoy receptor 2 (DCR2), was performed in tissue microarrays of 1140 IBC samples. Cases positive for at least one of these four markers were considered SASP-positive. Relations between SASP and tumor characteristics, including immune microenvironments (stromal tumor-infiltrating lymphocytes [sTILs] density and numbers of intraepithelial CD103-positive [iCD103 + ] lymphocytes) and clinical outcomes were retrospectively evaluated. HMGB1, p16, p15, or DCR2 was positive in 6.7%, 26.6%, 21.1%, and 26.5%, respectively, of the 1,140 cases. Six hundred and five (53.1%) cases were SASP positive, and SASP positivity was significantly associated with histologic grade 3, high-sTIL and iCD103 + lymphocyte counts, absence of ER or PR, and a high Ki-67 index. Although SASP did not predict breast cancer-specific survival (BCSS) or disease-free survival (DFS) in the entire cohort, SASP positivity in luminal A IBC was associated with poor BCSS and DFS. However, patients with SASP-positive TNBC showed better survival than those with SASP-negative TNBC. In multivariate analysis, SASP positivity was an independent prognostic factor in both luminal A IBC and TNBC, although the effect on prognosis was the opposite. In conclusion, SASP would be involved in the modulation of immune microenvironments and tumor progression in IBC, and its prognostic significance depends on molecular subtype.
    MeSH term(s) Biomarkers, Tumor/metabolism ; Breast Neoplasms/immunology ; Breast Neoplasms/metabolism ; Breast Neoplasms/pathology ; Breast Neoplasms/surgery ; Carcinoma, Ductal, Breast/immunology ; Carcinoma, Ductal, Breast/metabolism ; Carcinoma, Ductal, Breast/pathology ; Carcinoma, Ductal, Breast/surgery ; Female ; Follow-Up Studies ; Gene Expression Regulation, Neoplastic ; Humans ; Immunohistochemistry ; Lymphocytes, Tumor-Infiltrating/immunology ; Middle Aged ; Prognosis ; Receptor, ErbB-2/metabolism ; Receptors, Estrogen/metabolism ; Receptors, Progesterone/metabolism ; Retrospective Studies ; Senescence-Associated Secretory Phenotype ; Survival Rate ; Tumor Microenvironment
    Chemical Substances Biomarkers, Tumor ; Receptors, Estrogen ; Receptors, Progesterone ; ERBB2 protein, human (EC 2.7.10.1) ; Receptor, ErbB-2 (EC 2.7.10.1)
    Language English
    Publishing date 2021-06-29
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1375979-6
    ISSN 1532-2807 ; 1219-4956
    ISSN (online) 1532-2807
    ISSN 1219-4956
    DOI 10.3389/pore.2021.1609795
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article: Characteristics and Prognosis of Estrogen Receptor Low-Positive Breast Cancer.

    Kim, Min Chong / Park, Min Hui / Choi, Jung Eun / Kang, Su Hwan / Bae, Young Kyung

    Journal of breast cancer

    2022  Volume 25, Issue 4, Page(s) 318–326

    Abstract: Purpose: The updated American Society of Clinical Oncology/College of American Pathologists guideline for estrogen receptor (ER) testing recommends that breast cancer with ER expression in 1-10% of tumor cells should be reported as ER-low positive (ER!## ...

    Abstract Purpose: The updated American Society of Clinical Oncology/College of American Pathologists guideline for estrogen receptor (ER) testing recommends that breast cancer with ER expression in 1-10% of tumor cells should be reported as ER-low positive (ER
    Methods: Consecutive patients with invasive breast cancer who underwent curative surgery between November 2007 and December 2014 were included. Clinicopathological characteristics and disease-free survival (DFS) of ER
    Results: Of the 2,309 cases included, 46 (2%), 643 (27.8%), and 1,620 (70.2%) were ER
    Conclusion: Patients with ER
    Language English
    Publishing date 2022-06-29
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2559753-X
    ISSN 2092-9900 ; 1738-6756
    ISSN (online) 2092-9900
    ISSN 1738-6756
    DOI 10.4048/jbc.2022.25.e31
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: NDRG3 protein expression is associated with aggressive biologic phenotype and unfavorable outcome in patients with invasive breast cancer.

    Kim, Min Chong / Park, Min Hui / Kang, Su Hwan / Bae, Young Kyung

    International journal of clinical and experimental pathology

    2019  Volume 12, Issue 10, Page(s) 3886–3893

    Abstract: The N-myc downstream regulated gene (NDRG) protein family consists of 4 members (NDRG1, NDRG2, NDRG3, and NDRG4), that have been reported to be aberrantly expressed in human cancers. Furthermore, NDRG3 protein expression is known to promote tumor ... ...

    Abstract The N-myc downstream regulated gene (NDRG) protein family consists of 4 members (NDRG1, NDRG2, NDRG3, and NDRG4), that have been reported to be aberrantly expressed in human cancers. Furthermore, NDRG3 protein expression is known to promote tumor angiogenesis and cell growth. The aim of this study was to investigate the clinical significance of NDRG3 expression in invasive breast cancer (IBC). NDRG3 expression was evaluated immunohistochemically in tissue microarrays of 1339 IBC samples, and associations between NDRG3 expression and clinicopathologic parameters, including prognosis, were examined. NDRG3 protein expression was observed in 194 (14.5%) cases, and found to be associated with an age of ≥ 50 yrs (
    Language English
    Publishing date 2019-10-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2418306-4
    ISSN 1936-2625 ; 1936-2625
    ISSN (online) 1936-2625
    ISSN 1936-2625
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Transferrin-Conjugated Melittin-Loaded L-Arginine-Coated Iron Oxide Nanoparticles for Mitigating Beta-Amyloid Pathology of the 5XFAD Mouse Brain.

    Choi, Moonseok / Ryu, Junghwa / Vu, Huy Duc / Kim, Dongsoo / Youn, Young-Jin / Park, Min Hui / Huynh, Phuong Tu / Hwang, Gyu-Bin / Youn, Sung Won / Jeong, Yun Ha

    International journal of molecular sciences

    2023  Volume 24, Issue 19

    Abstract: Alzheimer's disease (AD) is one of the most prevalent neurodegenerative diseases and a major contributor to dementia. Although the cause of this condition has been identified long ago as aberrant aggregations of amyloid and tau proteins, effective ... ...

    Abstract Alzheimer's disease (AD) is one of the most prevalent neurodegenerative diseases and a major contributor to dementia. Although the cause of this condition has been identified long ago as aberrant aggregations of amyloid and tau proteins, effective therapies for it remain elusive. The complexities of drug development for AD treatment are often compounded by the impermeable blood-brain barrier and low-yield brain delivery. In addition, the use of high drug concentrations to overcome this challenge may entail side effects. To address these challenges and enhance the precision of delivery into brain regions affected by amyloid aggregation, we proposed a transferrin-conjugated nanoparticle-based drug delivery system. The transferrin-conjugated melittin-loaded L-arginine-coated iron oxide nanoparticles (Tf-MeLioNs) developed in this study successfully mitigated melittin-induced cytotoxicity and hemolysis in the cell culture system. In the 5XFAD mouse brain, Tf-MeLioNs remarkably reduced amyloid plaque accumulation, particularly in the hippocampus. This study suggested Tf-LioNs as a potential drug delivery platform and Tf-MeLioNs as a candidate for therapeutic drug targeting of amyloid plaques in AD. These findings provide a foundation for further exploration and advancement in AD therapeutics.
    MeSH term(s) Mice ; Animals ; Amyloid beta-Peptides/metabolism ; Melitten/pharmacology ; Transferrin/metabolism ; Alzheimer Disease/metabolism ; Brain/metabolism ; Amyloid/metabolism ; Magnetic Iron Oxide Nanoparticles ; Mice, Transgenic ; Plaque, Amyloid/metabolism ; Disease Models, Animal
    Chemical Substances Amyloid beta-Peptides ; Melitten (20449-79-0) ; Transferrin ; Amyloid
    Language English
    Publishing date 2023-10-06
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms241914954
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Prognostic Value of Tumor-Infiltrating Lymphocyte Density Assessed Using a Standardized Method Based on Molecular Subtypes and Adjuvant Chemotherapy in Invasive Breast Cancer.

    Jang, Nuri / Kwon, Hee Jung / Park, Min Hui / Kang, Su Hwan / Bae, Young Kyung

    Annals of surgical oncology

    2018  Volume 25, Issue 4, Page(s) 937–946

    Abstract: Background: This study investigated the prognostic value of tumor-infiltrating lymphocyte (TIL) density as determined by molecular subtype and receipt of adjuvant chemotherapy in invasive breast cancer (IBC).: Methods: Stromal TIL densities were ... ...

    Abstract Background: This study investigated the prognostic value of tumor-infiltrating lymphocyte (TIL) density as determined by molecular subtype and receipt of adjuvant chemotherapy in invasive breast cancer (IBC).
    Methods: Stromal TIL densities were evaluated in 1489 IBC samples using recommendations proposed by the International TILs Working Group. Cases were allocated to high- and low-TIL density groups using a cutoff of 10%.
    Results: Of the 1489 IBC patients, 427 (28.7%) were assigned to the high-TIL group and 1062 (71.3%) to the low-TIL group. High TIL density was found to be significantly associated with large tumor size (p = 0.001), high histologic grade (p < 0.001), and high Ki-67 labeling index (p < 0.001). Triple-negative and human epidermal growth factor receptor 2 (HER2)-positive subtypes had significantly higher TIL densities than luminal A or B (HER2-negative) subtypes (p < 0.001). High TIL density was significantly associated with prolonged disease-free survival (DFS) by univariate (p < 0.001) and multivariate (p < 0.001) analyses. In the low-TIL-density group, the patients who did not receive adjuvant chemotherapy showed better DFS (p < 0.001), but no such survival difference was observed in the high-TIL group (p = 0.222). For the patients who received adjuvant anthracycline, high-TIL density was found to be an independent prognostic factor of favorable DFS in the luminal B (HER2-negative; p = 0.003), HER2-positive (p = 0.019), and triple-negative (p = 0.017) subtypes.
    Conclusion: Measurements of TIL density in routine clinical practice could give useful prognostic information for the triple-negative, HER2-positive, and luminal B (HER2-negative) IBC subtypes, especially for patients administered adjuvant anthracycline.
    MeSH term(s) Antineoplastic Combined Chemotherapy Protocols/therapeutic use ; Biomarkers, Tumor/metabolism ; Breast Neoplasms/drug therapy ; Breast Neoplasms/metabolism ; Breast Neoplasms/pathology ; Carcinoma, Ductal, Breast/drug therapy ; Carcinoma, Ductal, Breast/metabolism ; Carcinoma, Ductal, Breast/secondary ; Carcinoma, Lobular/drug therapy ; Carcinoma, Lobular/metabolism ; Carcinoma, Lobular/secondary ; Chemotherapy, Adjuvant ; Female ; Follow-Up Studies ; Humans ; Lymphatic Metastasis ; Lymphocytes, Tumor-Infiltrating/pathology ; Middle Aged ; Neoplasm Invasiveness ; Neoplasm Recurrence, Local/drug therapy ; Neoplasm Recurrence, Local/pathology ; Prognosis ; Receptor, ErbB-2/metabolism ; Receptors, Estrogen/metabolism ; Receptors, Progesterone/metabolism ; Retrospective Studies ; Survival Rate
    Chemical Substances Biomarkers, Tumor ; Receptors, Estrogen ; Receptors, Progesterone ; ERBB2 protein, human (EC 2.7.10.1) ; Receptor, ErbB-2 (EC 2.7.10.1)
    Language English
    Publishing date 2018-01-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1200469-8
    ISSN 1534-4681 ; 1068-9265
    ISSN (online) 1534-4681
    ISSN 1068-9265
    DOI 10.1245/s10434-017-6332-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Elevated Interleukin-13 Receptor Alpha 1 Expression in Tumor Cells Is Associated with Poor Prognosis in Patients with Invasive Breast Cancer.

    Park, Min Hui / Kwon, Hee Jung / Kim, Jae-Ryong / Lee, Byungheon / Lee, Soo Jung / Bae, Young Kyung

    Annals of surgical oncology

    2017  Volume 24, Issue 12, Page(s) 3780–3787

    Abstract: Background: Interleukin (IL)-13 is an immunoregulatory, anti-inflammatory cytokine that is produced by numerous immune cells, and plasma membrane receptor for IL-13 (IL-13R) is known to be expressed in various human malignancies and in immune cells.: ... ...

    Abstract Background: Interleukin (IL)-13 is an immunoregulatory, anti-inflammatory cytokine that is produced by numerous immune cells, and plasma membrane receptor for IL-13 (IL-13R) is known to be expressed in various human malignancies and in immune cells.
    Methods: The authors evaluated the expression of IL-13R alpha 1 (IL-13Rα1, an IL-13R subtype) by immunohistochemistry in tissue microarrays of 1213 invasive breast cancer (IBC) samples to determine the prognostic value of IL-13Rα1 expression.
    Results: High IL-13Rα1 expression was observed in 619 (51%) cases and was found to be associated with an older (≥50 years) age (p = 0.022), lymph node metastasis (p = 0.015), ductal and micropapillary histologic subtypes (p < 0.001), lymphovascular invasion (p = 0.012), HER2 positivity (p < 0.001), and a high (>20%) Ki-67 index (p = 0.039). No significant correlation was found between IL-13Rα1 expression and clinicopathological variables, including tumor size, histological grade, hormone receptor expressions, and tumor-infiltrating lymphocyte levels. Patients with high IL-13Rα1 expression showed poorer overall survival (p = 0.044) and disease-free survival (DFS, p = 0.001) than those with low/negative expression. Subgroup analysis revealed an association between IL-13Rα1 expression and survival for HER2-negative, but not for HER2-positive tumors. Multivariate analysis showed high IL-13Rα1 expression was an independent negative prognostic factor of DFS (p = 0.019).
    Conclusions: The results of this study suggest the IL-13 and IL-13Rα1 interaction promotes cancer cell growth and metastasis, and IL-13Rα1 expression is a potential prognostic marker in IBC.
    MeSH term(s) Adult ; Aged ; Aged, 80 and over ; Biomarkers, Tumor/metabolism ; Breast Neoplasms/metabolism ; Breast Neoplasms/pathology ; Breast Neoplasms/surgery ; Carcinoma, Ductal, Breast/metabolism ; Carcinoma, Ductal, Breast/secondary ; Carcinoma, Ductal, Breast/surgery ; Carcinoma, Lobular/metabolism ; Carcinoma, Lobular/secondary ; Carcinoma, Lobular/surgery ; Cohort Studies ; Female ; Follow-Up Studies ; Humans ; Immunoenzyme Techniques ; Interleukin-13 Receptor alpha1 Subunit/metabolism ; Lymphatic Metastasis ; Mastectomy ; Middle Aged ; Neoplasm Invasiveness ; Neoplasm Recurrence, Local/metabolism ; Neoplasm Recurrence, Local/pathology ; Neoplasm Recurrence, Local/surgery ; Prognosis ; Receptor, ErbB-2/metabolism ; Receptors, Estrogen/metabolism ; Receptors, Progesterone/metabolism ; Survival Rate ; Tissue Array Analysis ; Young Adult
    Chemical Substances Biomarkers, Tumor ; IL13RA1 protein, human ; Interleukin-13 Receptor alpha1 Subunit ; Receptors, Estrogen ; Receptors, Progesterone ; ERBB2 protein, human (EC 2.7.10.1) ; Receptor, ErbB-2 (EC 2.7.10.1)
    Language English
    Publishing date 2017-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1200469-8
    ISSN 1534-4681 ; 1068-9265
    ISSN (online) 1534-4681
    ISSN 1068-9265
    DOI 10.1245/s10434-017-5907-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Particulate-Based Single-Dose Local Immunosuppressive Regimen for Inducing Tolerogenic Dendritic Cells in Xenogeneic Islet Transplantation.

    Pathak, Shiva / Acharya, Suman / Regmi, Shobha / Shrestha, Prakash / You, Zhiwei / Bae, Young Kyung / Park, Min Hui / Yook, Simmyung / Kim, Jae-Ryong / Park, So Young / Jeong, Daewon / Yong, Chul Soon / Kim, Jong Oh / Chang, Jae Hoon / Jeong, Jee-Heon

    Advanced healthcare materials

    2020  Volume 10, Issue 2, Page(s) e2001157

    Abstract: Recent studies emphasize on developing immune tolerance by an interim administration of various immunosuppressive drugs. In this study, a robust protocol is reported for local immunomodulation using a single-dose of FK506 microspheres and clodronate ... ...

    Abstract Recent studies emphasize on developing immune tolerance by an interim administration of various immunosuppressive drugs. In this study, a robust protocol is reported for local immunomodulation using a single-dose of FK506 microspheres and clodronate liposomes (mFK+CLO) in a xenogeneic model of islet transplantation. Surprisingly, the single-dose treatment with mFK+CLO induce tolerance to the islet xenograft. The recipient mice display tolerogenic dendritic cells (tDCs) with decreased antigen presenting ability and T cell activation capacity. Furthermore, a reduced percentage of CD4
    MeSH term(s) Animals ; CD8-Positive T-Lymphocytes ; Dendritic Cells ; Immune Tolerance ; Islets of Langerhans Transplantation ; Mice ; T-Lymphocytes, Regulatory
    Language English
    Publishing date 2020-11-29
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2649576-4
    ISSN 2192-2659 ; 2192-2640
    ISSN (online) 2192-2659
    ISSN 2192-2640
    DOI 10.1002/adhm.202001157
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Engineered islet cell clusters transplanted into subcutaneous space are superior to pancreatic islets in diabetes.

    Pathak, Shiva / Regmi, Shobha / Gupta, Biki / Pham, Tung Thanh / Yong, Chul Soon / Kim, Jong Oh / Yook, Simmyung / Kim, Jae-Ryong / Park, Min Hui / Bae, Young Kyung / Jeong, Jee-Heon

    FASEB journal : official publication of the Federation of American Societies for Experimental Biology

    2017  Volume 31, Issue 11, Page(s) 5111–5121

    Abstract: An alternative route for pancreatic islet transplantation is the subcutaneous space; however, inadequate vascularization in the subcutaneous space limits the availability of oxygen and nutrients to the subcutaneously transplanted islets, which leads to ... ...

    Abstract An alternative route for pancreatic islet transplantation is the subcutaneous space; however, inadequate vascularization in the subcutaneous space limits the availability of oxygen and nutrients to the subcutaneously transplanted islets, which leads to the development of a necrotic core in the islets, thereby causing islet dysfunction. Thus, we aimed to prevent the early apoptosis of pancreatic islets after transplantation into subcutaneous space by preparing islet clusters of appropriate size. We prepared fully functional islet cell clusters (ICCs) by using the hanging-drop technique. We optimized the size of ICCs on the basis of viability and functionality after culture in an hypoxic environment. We transplanted ICCs into the subcutaneous space of diabetic mice and evaluated the viability of the islets at the transplantation site. In an hypoxic environment, ICCs exhibited improved viability and functionality compared with control islets. ICCs, upon transplantation into the hypoxic subcutaneous space of diabetic mice, showed better glycemic control compared with control islets. Live/dead imaging of the islets after retrieval from the transplanted area revealed significantly reduced apoptosis in ICCs. Transplantation of ICCs may be an attractive strategy to prevent islet cell apoptosis that results from nonimmune-mediated physiologic stress at the transplantation site.-Pathak, S., Regmi, S., Gupta, B., Pham, T. T., Yong, C. S., Kim, J. O., Yook, S., Kim, J.-R., Park, M. H., Bae, Y. K., Jeong, J.-H. Engineered islet cell clusters transplanted into subcutaneous space are superior to pancreatic islets in diabetes.
    Language English
    Publishing date 2017-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 639186-2
    ISSN 1530-6860 ; 0892-6638
    ISSN (online) 1530-6860
    ISSN 0892-6638
    DOI 10.1096/fj.201700490R
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Single synchronous delivery of FK506-loaded polymeric microspheres with pancreatic islets for the successful treatment of streptozocin-induced diabetes in mice.

    Pathak, Shiva / Regmi, Shobha / Gupta, Biki / Poudel, Bijay K / Pham, Tung Thanh / Yong, Chul Soon / Kim, Jong Oh / Kim, Jae-Ryong / Park, Min Hui / Bae, Young Kyung / Yook, Simmyung / Ahn, Cheol-Hee / Jeong, Jee-Heon

    Drug delivery

    2017  Volume 24, Issue 1, Page(s) 1350–1359

    Abstract: Immune rejection after transplantation is common, which leads to prompt failure of the graft. Therefore, to prolong the survival time of the graft, immunosuppressive therapy is the norm. Here, we report a robust immune protection protocol using FK506- ... ...

    Abstract Immune rejection after transplantation is common, which leads to prompt failure of the graft. Therefore, to prolong the survival time of the graft, immunosuppressive therapy is the norm. Here, we report a robust immune protection protocol using FK506-loaded microspheres (FK506
    MeSH term(s) Animals ; Blood Glucose ; Diabetes Mellitus, Experimental ; Islets of Langerhans ; Islets of Langerhans Transplantation ; Mice ; Microspheres ; Streptozocin ; Tacrolimus
    Chemical Substances Blood Glucose ; Streptozocin (5W494URQ81) ; Tacrolimus (WM0HAQ4WNM)
    Language English
    Publishing date 2017-08-31
    Publishing country England
    Document type Journal Article
    ZDB-ID 1213261-5
    ISSN 1521-0464 ; 1071-7544
    ISSN (online) 1521-0464
    ISSN 1071-7544
    DOI 10.1080/10717544.2017.1377317
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Tissue adhesive FK506-loaded polymeric nanoparticles for multi-layered nano-shielding of pancreatic islets to enhance xenograft survival in a diabetic mouse model.

    Pham, Tung Thanh / Nguyen, Tiep Tien / Pathak, Shiva / Regmi, Shobha / Nguyen, Hanh Thuy / Tran, Tuan Hiep / Yong, Chul Soon / Kim, Jong Oh / Park, Pil-Hoon / Park, Min Hui / Bae, Young Kyung / Choi, Jeong Uk / Byun, Youngro / Ahn, Cheol-Hee / Yook, Simmyung / Jeong, Jee-Heon

    Biomaterials

    2018  Volume 154, Page(s) 182–196

    Abstract: This study aims to develop a novel surface modification technology to prolong the survival time of pancreatic islets in a xenogenic transplantation model, using 3,4-dihydroxyphenethylamine (DOPA) conjugated poly(lactide-co-glycolide)-poly(ethylene glycol) ...

    Abstract This study aims to develop a novel surface modification technology to prolong the survival time of pancreatic islets in a xenogenic transplantation model, using 3,4-dihydroxyphenethylamine (DOPA) conjugated poly(lactide-co-glycolide)-poly(ethylene glycol) (PLGA-PEG) nanoparticles (DOPA-NPs) carrying immunosuppressant FK506 (FK506/DOPA-NPs). The functionalized DOPA-NPs formed a versatile coating layer for antigen camouflage without interfering the viability and functionality of islets. The coating layer effectively preserved the morphology and viability of islets in a co-culture condition with xenogenic lymphocytes for 7 days. Interestingly, the mean survival time of islets coated with FK506/DOPA-NPs was significantly higher as compared with that of islets coated with DOPA-NPs (without FK506) and control. This study demonstrated that the combination of surface camouflage and localized low dose of immunosuppressant could be an effective approach in prolonging the survival of transplanted islets. This newly developed platform might be useful for immobilizing various types of small molecules on therapeutic cells and biomaterial surface to improve the therapeutic efficacy in cell therapy and regenerative medicine.
    MeSH term(s) Animals ; Coated Materials, Biocompatible/chemistry ; Collagen/chemistry ; Diabetes Mellitus, Experimental/pathology ; Diabetes Mellitus, Experimental/therapy ; Dihydroxyphenylalanine/pharmacology ; Disease Models, Animal ; Graft Survival/drug effects ; Heterografts ; Islets of Langerhans/physiology ; Lactic Acid/chemistry ; Male ; Mice, Inbred C57BL ; Nanoparticles/chemistry ; Nanoparticles/ultrastructure ; Polyethylene Glycols/chemistry ; Polyglycolic Acid/chemistry ; Polymers/chemistry ; Rats, Sprague-Dawley ; Tacrolimus/pharmacology ; Tissue Adhesives/pharmacology ; Tissue Survival/drug effects ; Transplantation, Heterologous
    Chemical Substances Coated Materials, Biocompatible ; Polymers ; Tissue Adhesives ; polylactic acid-polyglycolic acid copolymer ; Polyglycolic Acid (26009-03-0) ; Polyethylene Glycols (30IQX730WE) ; Lactic Acid (33X04XA5AT) ; Dihydroxyphenylalanine (63-84-3) ; Collagen (9007-34-5) ; Tacrolimus (WM0HAQ4WNM)
    Language English
    Publishing date 2018-02
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 603079-8
    ISSN 1878-5905 ; 0142-9612
    ISSN (online) 1878-5905
    ISSN 0142-9612
    DOI 10.1016/j.biomaterials.2017.10.049
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top