• 제목/요약/키워드: Engraftment

검색결과 44건 처리시간 0.023초

혈관생성 억제제를 주사한 마우스 모델에서의 골수 세포의 복강 내 주입 후 생착 (Engraftment of Intraperitoneally Injected Bone Marrow Cells to Newborn Mice Injected with an Angiogenesis Inhibitor)

  • 조수진;주선영;우소연;강형진;안효섭;유경하;박은애
    • Neonatal Medicine
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    • 제15권1호
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    • pp.22-31
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    • 2008
  • 목 적 : 기관지폐이형성증은 미숙한 폐에서의 혈관과 폐포발달의 저해로 특징 질 수 있다. 폐 발달의 결과를 고려하면 줄기세포의 투여로 자가 회복기전을 이용한 폐 발달의 촉진의 가능성은 유망하고 이로 폐 기관지이 형성의 유병률과 합병증을 줄일 수 있다. 강화된 Green fluorescent protein (EGFP)를 표기인자로 표시한 줄기세포를 비 EGFP 마우스에 주사하여 생착 여부를 보고자 하였다. 방 법 : VEGFR2 억제제인 SU1498을 생후 3일된 마우스에 주사하여 폐포발달이 저해된 모형을 만들었다. 생후 4일에 $1{\times}10^6$ EGFP 양성 줄기세포를 복강 내로 주입하였다. 줄기세포를 투여한 폐의 형태학적인 분석과 면역염색을 시행 하였고, 주입된 줄기 세포의 생착을 확인하기 위해서 동일초점 현미경으로 분석하였다. 결 과 : SU1498을 주사한 신생마우스에서 폐포 표면적과 평균 폐포 용적이 감소되었다. 폐 발달이 억제된 마우스 모형에서 주입한 EGFP 양성 줄기세포가 발견 되었고, 내피세포와 외피세포로 분화함을 공초점 현미경으로 확인하였다. 결 론 : 주입된 EGFP 양성 줄기세포가 혈관생성억제제를 이용하여 만든 마우스의 폐 발달 저해 모형에서 생착 하여 내피세포와 외피세포로 분화함을 확인하였다.

중간엽줄기세포(MSC)를 이용한 허혈성 혈관질환 치료를 위한 세포치료제 개발: 기초연구에서 임상연구 (Development of Cell Therapeutics against Ischemic Vascular Diseases Using Mesenchymal Stem Cells: From Bench to Bed)

  • 이은지;박신후;서정호;안효경;남시현;권상모
    • 생명과학회지
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    • 제32권7호
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    • pp.567-577
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    • 2022
  • 최근 인구 고령화로 인해 허혈성 심장질환, 허혈성 뇌졸중, 말초 동맥 질환 등의 허혈성 혈관질환의 유병률이 지속적으로 증가하고 있다. 허혈성 질환에 대한 현재 표준화된 치료법은 약물 요법 및 수술을 통한 재관류요법이다. 재관류요법은 손상된 동맥의 기능을 회복시킬 수 있지만 허혈로 인해 손상된 주변 조직의 기능 회복에 있어 효율적이지 않다. 그러므로 허혈 질병을 안전하고 효과적으로 치료하고 주변 조직의 기능을 회복시킬 수 있는 새로운 치료전략의 개발이 필요하다. 이러한 한계를 극복하기 위해 손상된 부위를 재생하는 줄기세포 기반 치료가 허혈성 혈관질환의 유망한 전략으로 연구되어 왔다. 다양한 조직에서 분리할 수 있는 중간엽줄기세포(MSC)는 면역 조절, 혈관 신생 촉진 및 다양한 관련 인자의 분비를 통해 손상된 조직을 재생함으로써 허혈성 질환의 치료에 유망한 것으로 나타났다. 또한, 줄기세포 치료 효과를 높이기 위해 3D 배양법을 이용하거나 세포 프라이밍(Cell Priming)과 같은 MSC 기능을 강화하여 이식 효율을 높이는 새로운 접근법이 연구되고 있다. 이 논문에서는 MSC를 허혈성 질환 치료에 사용하는 다양한 전략을 제공하고 허혈성 부위에서 MSC의 분화(Differentiation), 증식(Proliferation) 및 생착(Engraftment)과 같은 이식의 문제에 대해 논의한다.

Scabies mimicking graft versus host disease in a hematopoietic cell transplant recipient

  • Kim, Dongsub;Choi, Soo-Han;Lee, Dong Youn;Kim, Juyoun;Cho, Eunjoo;Yoo, Keon Hee;Koo, Hong Hoe;Kim, Yae-Jean
    • Clinical and Experimental Pediatrics
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    • 제61권11호
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    • pp.371-373
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    • 2018
  • Scabies is a highly contagious skin infestation caused by the mite, Sarcoptes scabiei var. hominis. Complex responses to scabies mites in the innate, humoral, and cellular immune systems can cause skin inflammation and pruritus. Diagnosis can be challenging because scabies resembles other common skin conditions. We report the first Korean case of scabies in a hematopoietic cell transplant (HCT) recipient, initially suspected of skin graft versus host disease (GVHD). A T-cell acute lymphocytic leukemia patient underwent a sibling-matched allogeneic HCT and developed pruritus after cell engraftment. Treatment for GVHD did not improve the symptoms. He was diagnosed with scabies 30 days after the onset of symptoms.

Forensic STR Analysis of Mixed Chimerism after Allogeneic Bone Marrow Transplantation

  • Eom, Yong-Bin
    • 대한의생명과학회지
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    • 제16권3호
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    • pp.193-196
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    • 2010
  • Multiplex PCR-based short tandem repeat (STR) analysis is considered as a good tool for monitoring bone marrow engraftment after sex-mismatched allogeneic transplantation and provides a sensitive and accurate assessment of the contribution of both donor and/or recipient cells in post-transplantation specimens. Forensic STR analysis and quantitative real time PCR are used to determine the proportion of donor versus recipient each contained within the total DNA. The STR markers were co-amplified in a single reaction by using commercial $PowerPlex^{(R)}$ 16 system and $AmpFISTR^{(R)}$ $Identifiler^{(R)}$ / $Yfiler^{(R)}$ PCR amplification kits. Separation of the PCR products and fluorescence detection were performed by ABI $PRIS^{(R)}$ 3100 Genetic Analyzer with capillary electrophoresis. The $GeneMapper^{TM}$ ID software were used for size calling and analysis of STR profiles. Extracted DNA was quantified by the $Quantifiler^{TM}$ Human DNA / Y Human Male DNA Quantification Kit The intent of this study was to analyze the ratio of donor versus recipient cells in the post-transplant peripheral blood, spleen, lung and kidney specimens. Specimens were taken from the traffic accident male victim who had been engrafted from bone marrow female donor. Blood and spleen specimens displayed female donor DNA profile. Kidney specimen showed male recipient DNA profile. Interestingly, lung tissue showed mixed profiles. The findings of this study indicate that the forensic STR analysis using fluorescence labeling PCR combined with capillary electrophoresis is quick and reliable enough to assess the ratio of donor versus recipient cells and to monitor the mixed chimeric patterns.

Forced Expression of HoxB4 Enhances Hematopoietic Differentiation by Human Embryonic Stem Cells

  • Lee, Gab Sang;Kim, Byung Soo;Sheih, Jae-hung;Moore, Malcolm AS
    • Molecules and Cells
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    • 제25권4호
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    • pp.487-493
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    • 2008
  • HoxB4 has been shown to enhance hematopoietic engraftment by hematopoietic stem cells (HSC) from differentiating mouse embryonic stem cell (mESC) cultures. Here we examined the effect of ectopic expression of HoxB4 in differentiated human embryonic stem cells (hESCs). Stable HoxB4-expressing hESCs were established by lentiviral transduction, and the forced expression of HoxB4 did not affect stem cell features. HoxB4-expressing hESC-derived CD34+ cells generated higher numbers of erythroid and blast-like colonies than controls. The number of CD34+ cells increased but CD45+ and KDR+ cell numbers were not significantly affected. When the hESC derived CD34+ cells were transplanted into $NOD/SCID{\beta}2m-/-$ mice, the ectopic expression of HoxB4 did not alter their repopulating capacity. Our findings show that overexpression of HoxB4 in differentiating hESCs increases hematopoietic colony formation and hematopoietic cell formation in vitro, but does not affect in vivo repopulation in adult mice hosts.

Erratum to: Severe combined immunodeficiency pig as an emerging animal model for human diseases and regenerative medicines

  • Iqbal, Muhammad Arsalan;Hong, Kwonho;Kim, Jin Hoi;Choi, Youngsok
    • BMB Reports
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    • 제52권12호
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    • pp.718-727
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    • 2019
  • Severe combined immunodeficiency (SCID) is a group of inherited disorders characterized by compromised T lymphocyte differentiation related to abnormal development of other lymphocytes [i.e., B and/or natural killer (NK) cells], leading to death early in life unless treated immediately with hematopoietic stem cell transplant. Functional NK cells may impact engraftment success of life-saving procedures such as bone marrow transplantation in human SCID patients. Therefore, in animal models, a T cell-/B cell-/NK cell+ environment provides a valuable tool for understanding the function of the innate immune system and for developing targeted NK therapies against human immune diseases. In this review, we focus on underlying mechanisms of human SCID, recent progress in the development of SCID animal models, and utilization of SCID pig model in biomedical sciences. Numerous physiologies in pig are comparable to those in human such as immune system, X-linked heritability, typical T-B+NK- cellular phenotype, and anatomy. Due to analogous features of pig to those of human, studies have found that immunodeficient pig is the most appropriate model for human SCID.

T Lymphocyte Development and Activation in Humanized Mouse Model

  • Lee, Ji Yoon;Han, A-Reum;Lee, Dong Ryul
    • 한국발생생물학회지:발생과생식
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    • 제23권2호
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    • pp.79-92
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    • 2019
  • Humanized mice, containing engrafted human cells and tissues, are emerging as an important in vivo platform for studying human diseases. Since the development of Nod scid gamma (NSG) mice bearing mutations in the IL-2 receptor gamma chain, many investigators have used NSG mice engrafted with human hematopoietic stem cells (HSCs) to generate functional human immune systems in vivo, results in high efficacy of human cell engraftment. The development of NSG mice has allowed significant advances to be made in studies on several human diseases, including cancer and graft-versus-host-disease (GVHD), and in regenerative medicine. Based on the human HSC transplantation, organ transplantation including thymus and liver in the renal capsule has been performed. Also, immune reconstruction of cells, of the lymphoid as well as myeloid lineages, has been partly accomplished. However, crosstalk between pluripotent stem cell derived therapeutic cells with human leukocyte antigen (HLA) mis/matched types and immune CD3 T cells have not been fully addressed. To overcome this hurdle, human major histocompatibility complex (MHC) molecules, not mouse MHC molecules, are required to generate functional T cells in a humanized mouse model. Here, we briefly summarize characteristics of the humanized mouse model, focusing on development of CD3 T cells with MHC molecules. We also highlight the necessity of the humanized mouse model for the treatment of various human diseases.

Severe combined immunodeficiency pig as an emerging animal model for human diseases and regenerative medicines

  • Iqbal, Muhammad Arsalan;Hong, Kwonho;Kim, Jin Hoi;Choi, Youngsok
    • BMB Reports
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    • 제52권11호
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    • pp.625-634
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    • 2019
  • Severe combined immunodeficiency (SCID) is a group of inherited disorders characterized by compromised T lymphocyte differentiation related to abnormal development of other lymphocytes [i.e., B and/or natural killer (NK) cells], leading to death early in life unless treated immediately with hematopoietic stem cell transplant. Functional NK cells may impact engraftment success of life-saving procedures such as bone marrow transplantation in human SCID patients. Therefore, in animal models, a T cell-/B cell-/NK cell+ environment provides a valuable tool for understanding the function of the innate immune system and for developing targeted NK therapies against human immune diseases. In this review, we focus on underlying mechanisms of human SCID, recent progress in the development of SCID animal models, and utilization of SCID pig model in biomedical sciences. Numerous physiologies in pig are comparable to those in human such as immune system, X-linked heritability, typical T-B+NK- cellular phenotype, and anatomy. Due to analogous features of pig to those of human, studies have found that immunodeficient pig is the most appropriate model for human SCID.

런던 VEX 하우스의 Erik Satie 음악 'Vexations' 적용연구 (A Study on the Application of Erik Satie's Vexation for VEX House of London)

  • 정수진;김준
    • 한국콘텐츠학회논문지
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    • 제22권3호
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    • pp.35-42
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    • 2022
  • 본 연구는 음악과 건축의 상관관계를 토대로 음악 요소의 건축 설계로의 적용과 접목 가능성을 제시하기 위해 음악 Vexations의 건축물 VEX 하우스로 적용된 사례를 바탕으로 음악이 건축물에 어떻게 표현되어 설계되어 있는지 살펴본다. VEX 하우스는 Vexations의 반복(repetition) 속성과 더불어 불안정한 음계, 화성과 같은 요소들을 독특한 건축의 외형과 구조로 대입하여 표현하였다. 이와 더불어 제작된 앨범 'Vex'는 건축에서 음악으로 적용됐다. 즉, 이들은 음악과 건축의 유사성을 바탕으로 서로 다른 예술 분야 간의 교류로 만들어진 결과물로 볼 수 있다. 건축 설계에서 음악의 여러 가지 요소를 적용함으로써 건축 분야의 새로운 미적 가능성을 고찰할 수 있다.

Acute Myeloid Leukemia with t(8;21)(q22;q22) (AML1/ETO) in a Patient with Marked Hypocellularity and Low Blasts Count

  • ;조희순
    • Journal of Yeungnam Medical Science
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    • 제24권1호
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    • pp.85-90
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    • 2007
  • 세계보건기구의 분류에 따르면 8번 염색체와 21번 염색체의 전위인 t(8;21)(q22;q22)를 가진 경우는 말초혈액이나 골수에 모세포가 20% 미만이더라도 급성골수성백혈병으로 분류하여야 하며, 이는 흔하지 않은 소견이다. 뿐만 아니라 이런 아형의 백혈병에서 골수의 저세포 충실도는 매두 드물다. 저자들은 골수세포충실도가 5% 미만으로 심하게 감소되어 있고, 골수의 모세포도 20% 미만인 환자에서 t(8;21)을 관찰하여 급성골수성백혈병으로 진단한 1례를 보고하는 바이다. 항암치료에 잘 반응하고 동종골수이식의 생착이 잘 이루어져, t(8;21)을 가진 일반적인 고세포충실성 급성골수성백혈병과 유사하게 좋은 예후를 가지는 것으로 생각된다.

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