KR102129067B1 - 신규 엑소좀 계열 항암제 - Google Patents
신규 엑소좀 계열 항암제 Download PDFInfo
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- KR102129067B1 KR102129067B1 KR1020170184227A KR20170184227A KR102129067B1 KR 102129067 B1 KR102129067 B1 KR 102129067B1 KR 1020170184227 A KR1020170184227 A KR 1020170184227A KR 20170184227 A KR20170184227 A KR 20170184227A KR 102129067 B1 KR102129067 B1 KR 102129067B1
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Abstract
본 발명은 탐식작용 촉진 단백질이 엑소좀(exosome) 표면에 제시된, 재조합 엑소좀 및 그의 용도를 제공한다.
Description
본 발명은 신규 항암제에 관한 것으로서 보다 구체적으로는 암세포의 식균작용을 증가시키는 신규 엑소좀 계열 항암제에 관한 것이다.
종양(tumor)은 생존하고 증식하기 위해 면역세포의 표면에서 발견되는 수용체와 상호 작용하는 활성화 및 억제 리간드를 발현함으로써 면역 감시(immune surveillance)를 피한다. 종양과 면역 세포 사이의 이러한 상호 작용은 면역계(immune system)에 의해 종양이 사멸되는 것을 방지한다(Pardoll DM. Nat Rev Cancer. 12:252-64. 2012). 종양 면역 회피의 메커니즘 중 하나는 종양이 선천성 면역 감시를 피할 수 있게 하는 CD47의 과발현으로 CD47이 대식세포와 같은 선천성 면역 세포의 신호 조절 단백질α(SIRPα)과 결합하면 수지상 세포는 "나를 먹지 마시오" 신호를 활성화시켜 종양이 식균작용(phagocytosis)으로부터 피할 수 있게 유도하는데 다양한 악성 세포에서 풍부한 CD47가 발현되어 암 환자의 생존율이 낮아지므로 CD47-SIRPα 상호작용의 치료 표적화를 위한 강력한 근거를 제시한다. SIRPα의 N 말단이 CD47의 N 말단과 상호 작용하는 면역 글로블린 수퍼 패밀리 V-유사 도메인을 포함하기 때문에, 몇몇 경쟁적 길항제가 이들의 상호 작용을 차단하기 위해 개발되었는데 인간 CD47 차단 단일클론 항체(CD47 mAb)는 다양한 전 임상 종양 모델에서 효능을 입증하였고 면역원성 종양의 T 세포 매개의 파괴(destruction)를 유발하였다(Tseng D, et al. Proc Natl Acad Sci USA. 110:11103-8. 2013). 또한, CD47-SIRPα 상호작용은 재조합 SIRPα 단백질이나 SIRPα- FC 융합 단백질과 함께 길항효과를 나타낼 수 있는데 천연 CD47과 SIRPα 사이의 약한 상호작용이 치료 길항제로서 야생형 SIRPα 단백질의 유용성을 제한할 수 있다는 것을 감안할 때, SIRPα의 고친화성(high-affinity) 변이체가 생성되어 암세포에서 CD47을 길항하는 것으로 나타났다. 그러나 SIRPα 변이체만으로 종양 특이적 항체에 대한 보조제(adjuvants)로 작용하였으나 기대이상으로 대식세포의 식균작용과 종양 성장억제를 자극하진 않았다(Sockolosky JT et al., Proc Natl Acad Sci USA. 113:E2646-E54. 2016). 이와 관련하여 미국 공개특허 제2015-0376288호는 숙주 식세포(host phagocytic cell)상의 감염된 세포에서 SIRPα로 CD47의 결합을 감소시키는 약제를 투여하여 병원체 감염을 치료하는 치료방법을 개시하고 있다.
그러나, 상기 선행기술의 경우, 감염성 질환 치료를 위해 항-CD47 제제를 투여하여 SIRPα의 결합을 감소시키므로 항암치료를 위한 치료제로는 부적합하다.
본 발명은 상기 문제점을 포함한 다양한 문제점을 해결하기 위한 것으로서, 대식세포와 수지상세포의 식균작용을 증가시켜 암세포를 제거하는 항암치료에 효과적인 신규 엑소좀 계열 항암제를 제공하는 것을 목적으로 한다. 그러나 이러한 과제는 예시적인 것으로, 이에 의해 본 발명의 범위가 한정되는 것은 아니다.
본 발명의 일 관점에 따르면, 탐식작용 촉진 단백질이 엑소좀(exosome) 표면에 제시된, 재조합 엑소좀이 제공된다.
본 발명의 다른 일 관점에 따르면, 치료적으로 유효한 양의 상기 재조합 엑소좀 및 약학적으로 허용가능한 담체를 포함하는, 항암용 약학적 조성물이 제공된다.
상기한 바와 같이 이루어진 본 발명의 일 실시예에 따르면, 대식세포와 수지상세포의 암세포 탐식능력을 향상시켜 항암 면역 효과가 증가된 효과적인 엑소좀 계열 항암제 생산효과를 구현할 수 있다. 특히 본 발명의 일 실시예에 따른 SiRP 가 표면에 제시된 재조합 엑소좀은 상기 SiRP가 엑소좀 표면에 지질 뗏목(lipid raft) 형태로 클러스터링됨으로써 마찬가지로 암세포 표면에 지질 뗏목 형태로 클러스터링하고 있는 CD47 단백질에 대하여 높은 결합능(high binding avidity)를 가지고 결합하므로 적은 양의 엑소좀만으로도 SiRP-CD47 상호작용을 차단하여 항암면역반응을 보다 효율적으로 자극할 수 있게 한다. 물론 이러한 효과에 의해 본 발명의 범위가 한정되는 것은 아니다.
도 1은 본 발명의 일 실시예에 따라 SIRPα 변이체(SIRPα-엑소좀)를 발현하는 플라스마 DNA의 구조를 개략적으로 나타내는 개요도이다.
도 2는 본 발명의 일 실시예에 따라 제조된 재조합 엑소좀(SIRPα-엑소좀)의 발현을 확인한 웨스턴블랏 겔사진(A)이고 유세포분석(flow cytometry)을 통해 엑소좀 표면의 SIRPα의 발현을 분석한 그래프이며(B) SIRPα-엑소좀의 이미지를 보여주는 전자 현미경사진이다(C).
도 3은 본 발명의 일 실시예에 따라 제조한 SIRPα-엑소좀의 크기를 동적 광 산란(DLS)방법으로 분석한 그래프이고(A) SIRPα-엑소좀의 투과전자현미경 사진이며(B) 유세포분석 그래프이고(C) 동적 광 산란(DLS) 분석 그래프이다(D).
도 4는 본 발명의 일 실시예에 따라 정제된 재조합 SIRPα-Myc 단량체 단백질(mSIRPα)의 발현을 분석한 웨스턴 블랏 겔사진이고(A) 재조합 SIRPα-엑소좀의 SIRPα의 양을 정량한 그래프이다(B).
도 5는 본 발명의 일 실시예에 따라 세포 결합 분석을 통하여 HT29(A), Raji(B) 및 CT26.CL25 세포(C) 표면에서 CD47의 발현을 확인한 그래프이다.
도 6은 본 발명의 일 실시예에 따라 재조합 SIRPα의 CD47 결합 능력을 분석한 것으로 HT29 세포의 형광강도를 분석한 그래프(A)이고 유세포분석을 수행한 그래프(B)이며 Raji 및 CT26.CL25 세포의 형광강도를 분석한 그래프(C)이다.
도 7은 본 발명의 일 실시예에 따라 HT29 세포에서 재조합 SIRPα의 효과적인 결합을 나타내는 형광현미경 사진이다.
도 8은 본 발명의 일 실시예에 따라 골수 유래 대식세포(BMDMs)에 의한 식균작용을 분석한 것으로 골수 유래 대식세포의 분화를 분석한 그래프(A)이고 골수 유래 대식세포(BMDMs)에 의한 HT29 세포의 식균작용을 분석한 FACS 데이터이다(B).
도 9는 본 발명의 일 실시예에 따라 SIRPα-엑소좀에 의해 식균작용이 증가된 것을 분석한 그래프(A)이고 골수 유래 대식세포(BMDMs)에 의해 Raji 및 CT26.CL25 세포의 식균작용을 분석한 그래프(B)이며 식균작용 지수(PI)를 나타내고 있는 그래프(C)이고 골수 유래 대식세포(BMDMs)에 의해 HT29 세포의 모습을 나타내고 있는 형광 현미경 사진(D)이다.
도 10은 본 발명의 일 실시예에 따라 종양 보유 면역-결핍 마우스에서 SIRPα-엑소좀을 종양에 처리하여 항-종양 효과를 관찰한 것으로 종양의 성장(A), 종양의 무게(B)를 분석한 그래프이고 절개된 종양의 이미지(C)를 나타내는 사진이다.
도 11은 본 발명의 일 실시예에 따라 SIRPα-엑소좀의 항종양 효과를 분석한 것으로 HT29 종양 보유 마우스에서 Cy5.5 표지된 엑소좀의 생체분포를 분석한 사진(A)이고 SIRPα-엑소좀을 주입 후 24시간 경과시점에서 종양의 형광 이미지(B)이며 종양의 평균 방사 효율의 변화를 나타내는 사진이다(C).
도 12는 본 발명의 일 실시예에 따라 마우스에 Cy5.5 표지된 엑소좀을 주사한 후 장기별로 분석한 IVIS 이미지다.
도 13은 본 발명의 일 실시예에 따라 면역-결핍(immuno-deficient) 및 면역 감응(immunocompetent) 마우스를 이용하여 SIRPα-엑소좀의 항-종양효과를 관찰한 것으로 HT29 종양 보유 BALB/c 면역-결핍 마우스에 SIRPα-엑소좀을 주입하여 종양 성장 억제를 분석한 그래프(A) 및 상기 면역-결핍 마우스 모델로부터 절개된 종양의 중량을 분석한 그래프(B), CT26.CL25 종양 보유 면역 감응 BALB/c 마우스의 종양 성장에 있어 SIRPα-엑소좀의 주입에 따른 항-종양효과를 분석한 그래프(C) 및 상기 CT26.CL25 종양 보유 면역 감응 마우스 모델로부터 절개된 종양의 중량을 분석한 그래프(D)이다.
도 14는 본 발명의 일 실시예에 따라 SIRPα-엑소좀의 항종양 효과를 분석한 것으로 HT29 마우스 모델로부터 절개된 종양을 모습을 나타내고 있는 사진(A)이고 CT26.CL25 종양 보유 마우스 모델로부터 절개된 종양의 모습을 나타내고 있는 사진(B)이다.
도 15는 본 발명의 일 실시예에 따라 단량체 SIRPα 단백질의 효과를 분석한 것으로 단량체 SIRPα 단백질이 CD47에 결합하는 정도를 분석한 그래프(A)이고 HT29 세포에서 단량체 SIRPα 매개 식균작용을 분석한 그래프(B)이며 Raji 및 CT26.CL25 세포에서 단량체 SIRPα 매개 식균작용을 분석한 그래프(C)이다.
도 2는 본 발명의 일 실시예에 따라 제조된 재조합 엑소좀(SIRPα-엑소좀)의 발현을 확인한 웨스턴블랏 겔사진(A)이고 유세포분석(flow cytometry)을 통해 엑소좀 표면의 SIRPα의 발현을 분석한 그래프이며(B) SIRPα-엑소좀의 이미지를 보여주는 전자 현미경사진이다(C).
도 3은 본 발명의 일 실시예에 따라 제조한 SIRPα-엑소좀의 크기를 동적 광 산란(DLS)방법으로 분석한 그래프이고(A) SIRPα-엑소좀의 투과전자현미경 사진이며(B) 유세포분석 그래프이고(C) 동적 광 산란(DLS) 분석 그래프이다(D).
도 4는 본 발명의 일 실시예에 따라 정제된 재조합 SIRPα-Myc 단량체 단백질(mSIRPα)의 발현을 분석한 웨스턴 블랏 겔사진이고(A) 재조합 SIRPα-엑소좀의 SIRPα의 양을 정량한 그래프이다(B).
도 5는 본 발명의 일 실시예에 따라 세포 결합 분석을 통하여 HT29(A), Raji(B) 및 CT26.CL25 세포(C) 표면에서 CD47의 발현을 확인한 그래프이다.
도 6은 본 발명의 일 실시예에 따라 재조합 SIRPα의 CD47 결합 능력을 분석한 것으로 HT29 세포의 형광강도를 분석한 그래프(A)이고 유세포분석을 수행한 그래프(B)이며 Raji 및 CT26.CL25 세포의 형광강도를 분석한 그래프(C)이다.
도 7은 본 발명의 일 실시예에 따라 HT29 세포에서 재조합 SIRPα의 효과적인 결합을 나타내는 형광현미경 사진이다.
도 8은 본 발명의 일 실시예에 따라 골수 유래 대식세포(BMDMs)에 의한 식균작용을 분석한 것으로 골수 유래 대식세포의 분화를 분석한 그래프(A)이고 골수 유래 대식세포(BMDMs)에 의한 HT29 세포의 식균작용을 분석한 FACS 데이터이다(B).
도 9는 본 발명의 일 실시예에 따라 SIRPα-엑소좀에 의해 식균작용이 증가된 것을 분석한 그래프(A)이고 골수 유래 대식세포(BMDMs)에 의해 Raji 및 CT26.CL25 세포의 식균작용을 분석한 그래프(B)이며 식균작용 지수(PI)를 나타내고 있는 그래프(C)이고 골수 유래 대식세포(BMDMs)에 의해 HT29 세포의 모습을 나타내고 있는 형광 현미경 사진(D)이다.
도 10은 본 발명의 일 실시예에 따라 종양 보유 면역-결핍 마우스에서 SIRPα-엑소좀을 종양에 처리하여 항-종양 효과를 관찰한 것으로 종양의 성장(A), 종양의 무게(B)를 분석한 그래프이고 절개된 종양의 이미지(C)를 나타내는 사진이다.
도 11은 본 발명의 일 실시예에 따라 SIRPα-엑소좀의 항종양 효과를 분석한 것으로 HT29 종양 보유 마우스에서 Cy5.5 표지된 엑소좀의 생체분포를 분석한 사진(A)이고 SIRPα-엑소좀을 주입 후 24시간 경과시점에서 종양의 형광 이미지(B)이며 종양의 평균 방사 효율의 변화를 나타내는 사진이다(C).
도 12는 본 발명의 일 실시예에 따라 마우스에 Cy5.5 표지된 엑소좀을 주사한 후 장기별로 분석한 IVIS 이미지다.
도 13은 본 발명의 일 실시예에 따라 면역-결핍(immuno-deficient) 및 면역 감응(immunocompetent) 마우스를 이용하여 SIRPα-엑소좀의 항-종양효과를 관찰한 것으로 HT29 종양 보유 BALB/c 면역-결핍 마우스에 SIRPα-엑소좀을 주입하여 종양 성장 억제를 분석한 그래프(A) 및 상기 면역-결핍 마우스 모델로부터 절개된 종양의 중량을 분석한 그래프(B), CT26.CL25 종양 보유 면역 감응 BALB/c 마우스의 종양 성장에 있어 SIRPα-엑소좀의 주입에 따른 항-종양효과를 분석한 그래프(C) 및 상기 CT26.CL25 종양 보유 면역 감응 마우스 모델로부터 절개된 종양의 중량을 분석한 그래프(D)이다.
도 14는 본 발명의 일 실시예에 따라 SIRPα-엑소좀의 항종양 효과를 분석한 것으로 HT29 마우스 모델로부터 절개된 종양을 모습을 나타내고 있는 사진(A)이고 CT26.CL25 종양 보유 마우스 모델로부터 절개된 종양의 모습을 나타내고 있는 사진(B)이다.
도 15는 본 발명의 일 실시예에 따라 단량체 SIRPα 단백질의 효과를 분석한 것으로 단량체 SIRPα 단백질이 CD47에 결합하는 정도를 분석한 그래프(A)이고 HT29 세포에서 단량체 SIRPα 매개 식균작용을 분석한 그래프(B)이며 Raji 및 CT26.CL25 세포에서 단량체 SIRPα 매개 식균작용을 분석한 그래프(C)이다.
용어의 정의
본 문서에서 사용되는 용어 "엑소좀(exosome)"은 인간 세포에서 분비되는 두 층의 막으로 이루어진 작은 소체로 이들은 응고, 세포 간의 신호 전달 및 세포의 "폐기물 관리"와 같은 전문 기능을 수행하고 질병 특이적 핵산과 단백질을 형성하며 체액으로 방출되는 것으로 알려져 있다.
본 문서에서 사용되는 용어 "SIRP(signal-regulatred protein)"는 골수세포에서 주로 발현되고 그리고 줄기세포 또는 신경세포에서 발현되는 SIRP족 단백질 중 조절성 막 당단백질이다. 상기 SIRP에는 SIRPα, SIRPβ, SIRPγ 및 SIRPδ의 네가지가 알려져 있는데 이들중 SIRPα 및 SIRPγ는 억제성 수용체로 작용하며, 광범위하게 발현되는 막통과 단백질인 CD47 단백질과 상호작용하는데 이는 이른 바 "날 먹지마(don't eat me)" 신호로 불린다. 이러한 상호작용은 숙주세포 탐식작용과 같은 선천적 면역세포의 효과기 작용을 음성적으로 조절한다. 이는 Ig-유사 또는 Ly49 수용체를 경유한 MHC I 계열 분자에 의해 제공되는 자가신호와 유사하다. CD47를 과발현하는 암세포는 SIRPα 또는 SIRPγ를 활성화시켜 대식세포-매개 파괴를 억제한다. 최근 연구에 의하면 SIRPα의 고친화성 변이체가 암세포 상에서 CD47을 마스킹하여 암세포에 대한 탐식작용을 증가시킨다는 보고가 있다(Weiskopf et al., Science 341(6141): 88-91, 2013).
본 문서에서 사용되는 용어 "수용체 티로신 카이네이즈(receptor tyrosine kinase, RTK)"는 세포의 증식, 분화, 암화, 형태형성 등에 관여하는 중요한 단백질군으로 예를 들면 상피증식인자수용체, 신경생장인자수용체, 인슐린수용체, 조혈간세포증식인자수용체 등 다수가 있다. 수용체는 이들 증식 및 분자인자와 세포 외에서 결합할 때에만 세포내 티로신인산화효소를 활성화하여 신호를 전달한다.
본 문서에서 사용되는 용어 "CD-47 결합 도메인(rCD-47 binding domain)"은 CD47과 결합하는 N-말단 도메인으로 N-말단의 112 a.a까지로 CD47과 결합할 수 있는 도메인을 의미한다.
발명의 상세한 설명
본 발명의 일 관점에 따르면, 탐식작용 촉진 단백질이 엑소좀(exosome) 표면에 제시된, 재조합 엑소좀이 제공된다.
상기 재조합 엑소좀에 있어서, 상기 탐식작용 촉진 단백질은 수용체 티로신 카이네이즈의 막통과 도메인의 N-말단에 연결된 융합단백질일 수 있고, 상기 수용체 티로신 카이네이즈는 PDGFR(platelent-derived growth factor receptor), EGFR(epidermal growth factor receptor), FGFR(fibroblast growth factor receptor), VEGFR(vascular endothelial growth factor receptor), HGFR(hepatocyte growth factor receptor), Trk(tropomyosin receptor kinase), IR(insulin receptor), LTK(Leukocyte receptor tyrosine kinase), 안지오포이에틴 수용체(angiopoietin receptor), ROR(receptor tyrosine kinase-like orphan receptors), DDR(discoidin domain receptor), RETR(rearranged during transfection receptor), PTK(tyrosine-protein kinase-like), RYK(related to receptor tyrosine kinase), 또는 MuSK(muscle-specific kinase)일 수 있다.
엑소좀은 세포에 의해 생성되는 일종의 천연물질로서 생체친화적인 물질로서 면역반응을 최소화할 수 있으며, 수용체와 같은 세포 표면에 발현되는 세포막 단백질을 세포와 동일한 방향으로 정향시켜 표면에 제시할 수 있기 때문에, 세포 표면제시 단백질을 표면에 제시하여 표출시키는데 큰 장점을 가지고 있는 물질이다.
상기 재조합 엑소좀에 있어서, 상기 탐식작용 촉진 단백질은 SIRP 또는 상기 SIRP의 CD47 결합도메인을 포함하는 단편, Surfactant protein A, Surfactant protein D 또는 항-CD47 항체일 수 있고, 상기 SIRP는 SIRPα, SIRPγ 또는 이들의 고친화성 변이체일 수 있다.
상기 재조합 엑소좀에 있어서, 상기 SIRP는 서열번호 1 내지 61 중 어느 하나의 아미노산 서열로 구성될 수 있으며 상기 엑소좀은 내부에 항암제를 포함할 수 있고 상기 항암제는 항암 단백질 또는 항암 화합물일 수 있다. 특히 상기 탐식작용 촉진 단백질은 CD47 단백질의 클러스터링(clustering)에 따른 신호전달체계를 차단할 수 있는 것으로서 항-CD47 항체나 SiRP 단백질인 것이 바람직하다. 특히 엑소좀 표면에 제시된 SIRP는 SIRP의 엑소좀 표면제시에 사용된 PDGFR(platelet-derived growth factor receptor)의 막통과 도메인(transmembrane domain)에 기인하여 엑소좀 표면에 지질 뗏목(lipid raft) 형태로 클러스터링됨으로써 마찬가지로 암세포 표면에 지질 뗏목 형태로 클러스터링하고 있는 CD47 단백질에 대하여 높은 결합능(high binding avidity)를 가지고 결합함으로써 적은 양의 엑소좀만으로도 SIRP-CD47 상호작용을 차단함으로써 항암면역반응을 보다 효율적으로 자극할 수 있게 한다. 상기와 같은 엑소좀에 적재된 SiRPα의 상승작용은 본 발명자들에 의해 처음으로 규명된 것이다.
상기 재조합 엑소좀에 있어서, 상기 항암 단백질은 아스파라기네이즈(asparaginase), 단백질 독소, 암항원에 특이적인 항체 또는 상기 항체의 단편, 종양억제 유전자(tumor suppressor gene) 또는 항혈관생성인자(antiangiogenic factor)일 수 있다. 이 때, 상기 단백질 독소는 보툴리눔 독소(Botulinum toxin), 테타누스 독소(Tetanus toxin), 시가 독소(Shiga toxin), 디프테리아 독소(Diphtheria toxin, DT), 리신(ricin), 슈도모나스 외독소(Pseudomonas exotoxin, PE), 사이토라이신 A(cytolysin A, ClyA), γ-Gelonin일 수 있고, 상기 경색조직 조직 치료용 단백질은 혈관생성인자일 수 있으며, 상기 혈관생성인자는 VEGF(vscular endothelial growth factor), 안지오포이에틴1(angiopoietin 1, Ang1), 안지오포이에틴2(Ang2), 형질전환 성장인자-(transforming growth factor-, TGF-β), 인테그린(integrin), 혈관 내피 캐드헤드린(VE-cadherin), 플라스미노겐 활성제(plasminogen activator, PA), 에프린(ephrin), AC-133, 혈소판 유래 성장인자(PDGF), 단핵구 주화성 단백질-1(MCP-1, monocyte chemotactic protein-1), 섬유아세포 성장인자(FGF) 또는 태반성장인자(placenta growth factor, PIGF)일 수 있다. 상기 종양 억제 유전자는 종양의 발생을 억제하는 유전자로서, 대표적으로 VHL(von HippelLindau), APC(Adenomatous polyposis coli), CD95(cluster of differentiation 95), ST5(Suppression of tumorigenicity 5), YPEL3(Yippee like 3), ST7(Suppression of tumorigenicity 7) 및 ST14(Suppression of tumorigenicity 14)일 수 있다.
상기 재조합 엑소좀에 있어서, 상기 항암 화합물은, 메토트렉세이트(methotrexate), 피리미딘 유사체(pyrimidine analogs), 히드록시우레아(hydroxy urea), 퓨린 유사체(purine analogs), 알킬화제(alkylating agents), 면역원성 세포사멸 유도제, 유사분열 억제제(mitotic inhibitors), 신생혈관억제제, 삽입성 물질(ntercalating agents) 또는 방사성 핵종(radionuclides)일 수 있다.
상기 항암 화합물은 하기의 것들이 사용될 수 있다.
(ⅰ) 메토트렉세이트(methotrexate);
(ⅱ) 피리미딘 유사체(pyrimidine analogs)
5-플루오로우라실(5-fluorouracil), 젬시타빈(gemcitabine) 및 아라비노실시토신(arabinosylcytosine);
(ⅲ) 히드록시우레아(hydroxy urea);
(ⅳ) 퓨린 유사체(purine analogs)
머캅토퓨린(mercaptopurine) 및 티오구아닌(thioguanine);
(ⅴ) 알킬화제(alkylating agents)
니트로겐 머스타드(nitrogen mustad) 및 사이클로스포라미드(cyclosporamide);
(ⅵ) 항생제(antibiotics)
안트라사이클린(anthracycline), 독소루비신(doxorubicin), 다우노루비신(daunorubicin), 이다루비신
(idarubicin) 및 악티노마이신 D(actinomycin D);
(ⅶ) 유사분열 억제제(mitotic inhibitors)
빈크리스틴(vincristine) 및 탁솔(taxol);
(ⅷ) 항혈관생성제
VEGF에 특이적인 항체, 콤브레타스타틴 A4(combretastatin A4), 푸마길린(Fumagillin), 허비마이신
A(herbimycin A), 2-메톡시에스트라디올(2-methoxyestradiol), OGT 2115, TNP 470, 트라닐라스트(tranilast),
XRP44X, 탈리도마이드(thalidomide), 엔도스타틴(endostatin), 살모신(salmosin), 안지오스타틴(angiostatin)
또는 플라스미노겐(plasminogen) 또는 아포리포단백질(apolipoprotein)의 크링글 도메인(kringle domain);
(ⅸ) 삽입성 물질(intercalating agents)
카르보틀라틴(carboplatin) 및 시스플라틴(cisplatin); 및
(ⅹ) 방사성 핵종(radionuclides)
18F, 90Y, 188Re, 32P, 89Sr, 165Dy, 186Re, 198Au, 153Sm, 131I, 169Er, 125I, 99Tc 및 166Ho, 등.
상기 재조합 엑소좀에 있어서, 상기 면역원성 세포사멸 유도제는 안트라사이클린 계열 항암제, 항-EGFR 항체, BK 채널 작용제, 보르테조밉(Bortezomib), 강심성 배당체(cardiac glycoside) + 비-면역원성 세포사멸 유도제, 사이클로포스마이드 계열 항암제, GADD34/PP1 저해제 + 마토마이신, LV-tSMAC, Measles 바이러스, 또는 옥살리플라틴일 수 있고 상기 안트라사이클린 계열 항암제는 다우노루비신(daunorubicin), 독소루비신(doxorubicin), 에피루비신(epirubicin), 이다루비신(idarubicin), 픽산트론(pixantrone), 사바루비신(sabarubicin), 또는 발루비신(valrubicin)일 수 있다.
본 발명의 다른 일 관점에 따르면, 치료적으로 유효한 양의 상기 재조합 엑소좀 및 약학적으로 허용가능한 담체를 포함하는, 항암용 약학적 조성물이 제공된다.
상기 항암용 약학적 조성물에 있어서, 하나 이상의 항암제를 추가로 포함할 수 있다. 약학적으로 허용 가능한 담체를 포함하는 상기 조성물은 경구 또는 비경구의 여러 가지 제형일 수 있으나, 비경구를 위한 제형인 것이 바람직하다. 제제화할 경우에는 보통 사용하는 충진제, 증량제, 결합제, 습윤제, 붕해제, 계면활성제 등의 희석제 또는 부형제를 사용하여 조제된다. 경구투여를 위한 고형제제에는 정제, 환제, 산제, 과립제, 캡슐제 등이 포함되며, 이러한 고형제제는 하나 이상의 화합물에 적어도 하나 이상의 부형제 예를 들면, 전분, 탄산칼슘, 수크로오스 또는 락토오스, 젤라틴 등을 섞어 조제된다. 또한 단순한 부형제 이외에 스테아린산 마그네슘, 탈크 등과 같은 윤활제들도 사용될 수 있다. 경구투여를 위한 액상제제로는 현탁제, 내용액제, 유제, 시럽제 등이 해당되는데 흔히 사용되는 단순 희석제인 물, 리퀴드 파라핀 이외에 여러 가지 부형제, 예를 들면 습윤제, 감미제, 방향제, 보존제 등이 포함될 수 있다. 비경구 투여를 위한 제제에는 멸균된 수용액, 비수성용제, 현탁제, 유제, 동결건조제제, 좌제가 포함된다. 비수성용제, 현탁용제로는 프로필렌글리콜(propylene glycol), 폴리에틸렌 글리콜, 올리브 오일과 같은 식물성 기름, 에틸올레이트와 같은 주사 가능한 에스테로 등이 사용될 수 있다. 좌제의 기제로는 위텝솔(witepsol), 마크로골, 트윈(tween) 61, 카카오지, 라우린지, 글리세로젤라틴 등이 사용될 수 있다.
상기 약학적 조성물은 정제, 환제, 산제, 과립제, 캡슐제, 현탁제, 용액제, 유제, 시럽제, 멸균된 수용액, 비수성용제, 현탁제, 유제, 동결건조제제 및 좌제로 이루어진 군으로부터 선택되는 어느 하나의 제형을 가질 수 있다.
본 발명의 약학적 조성물은 경구 또는 비경구로 투여될 수 있는데, 비경구로 투여되는 경우, 정맥내 주사, 비강내 흡입, 근육내 투여, 복강내 투여, 경피흡수 등 다양한 경로를 통해 투여하는 것이 가능하다.
상기 본 발명의 조성물은 약학적으로 유효한 양으로 투여된다.
본 문서에서 사용되는 용어 "약학적으로 유효한 양"은 의학적 치료에 적용 가능한 합리적인 수혜/위험 비율로 질환을 치료하기에 충분한 양을 의미하며, 유효 용량 수준은 개체 종류 및 중증도, 연령, 성별, 약물의 활성, 약물에 대한 민감도, 투여 시간, 투여 경로 및 배출 비율, 치료 기간, 동시 사용되는 약물을 포함한 요소 및 기타 의학분야에 잘 알려진 요소에 따라 결정될 수 있다. 본 발명의 약학적 조성물은 0.1 mg/kg 내지 1 g/kg의 용량으로 투여될 수 있으며, 더 바람직하게는 1 mg/kg 내지 500 mg/kg의 투여량으로 투여된다. 한편, 상기 투여량은 환자의 나이, 성별 및 상태에 따라 적절히 조절될 수 있다.
본 발명의 약학적 조성물은 개별 치료제로 투여하거나 다른 항암제와 병용하여 투여될 수 있고, 종래의 다른 항암제와 순차적 또는 동시에 투여될 수 있다. 그리고 단일 또는 다중 투여될 수 있다. 상기 요소를 모두 고려하여 부작용 없이 최소한의 양으로 최대 효과를 얻을 수 있는 양을 투여하는 것이 중요하며, 당업자에 의해 용이하게 결정될 수 있다.
이하, 실시예를 통하여 본 발명을 더 상세히 설명한다. 그러나 본 발명은 이하에서 개시되는 실시예 및 실험예에 한정되는 것이 아니라 서로 다른 다양한 형태로 구현될 수 있는 것으로, 이하의 실시예 및 실험예는 본 발명의 개시가 완전하도록 하며, 통상의 지식을 가진 자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이다.
실시예 1: 플라스마 DNA 구축
본 발명의 일 실시예에 따라 종양 세포 표면에서 CD47을 차단하여 식균작용을 증가시키는 SIRPα 변이체(SIRPα-엑소좀s)를 발현하는 플라스미드 DNA를 구축하였다. 구체적으로 SIRPα 변이체 유전자는 유전자 합성 서비스(Cosmo Genetech Co.)를 통하여 수득하였고 상기 SIRPα 변이체(서열번호 1)를 인코딩하는 DNA 서열(서열번호 62)을 pDisplay 벡터에서 혈소판 유래 성장 인자 수용체(PDGFR)의 N- 말단의 신호 펩타이드 및 멤브레인 앵커 사이의 프레임에 삽입하였다(도 1).
실시예 2: 엑소좀(exosome) 분리
본 발명의 일 실시예에 따라 엑소좀 분리를 위하여 HEK293T 세포(6 x 106)는 10% FBS, 1% 항생제가 첨가된 고포도당 배양배지(Dulbecco's modified Eagle's medium, DMEM, 4,500 mg/L glucose)에서 배양하였고, 37℃, 5 % CO2 조건에서 유지되었으며 15-cm 배양접시에서 80~90%의 세포포화도(confluency)을 나타낼 때, 인슐린-트랜스페린-셀레닌(insulin-transferrin-selenium, Gibco)을 첨가한 무-혈청 DMEM 배양액으로 교환해주었다. 2시간 경과 후 상기 세포를 제조사의 지침에 따라 형질감염시약(lipofectamine 3000, Invitrogen)을 사용하여 SIRPα 변이체를 인코딩하는 플라스마 DNA(20 μg)로 형질감염(transfection)시켰다. 그 후, 엑소좀을 분리하기 위하여 형질주입 48시간 후 세포배양 상층액을 분별원심분리(differential centrifugation) 방법으로 수득하였고 상세한 방법은 하기와 같다:
먼저, 엑소좀을 포함하는 배양액에서 세포 찌꺼기와 다른 세포 성분을 제거하기 위하여 300 g으로 10분, 2000 g으로 10분 및 10000 g으로 30분간 순차적으로 원심분리를 하였고 상기 배양액을 0.22 μm 필터로 여과 후 70 Ti rotor(Beckman Instruments)를 이용하여 36,900 rpm에서 2시간 동안 초원심분리(ultra-centrifugation)를 수행하였다. 이후 수득한 재조합 엑소좀(SIRPα-엑소좀)은 단백질 분해효소 억제제(Roche)를 포함하는 PBS에 재현탁하였고 BCA 단백질 분석키트(Bio-Rad)를 이용하여 상기 분리된 엑소좀의 단백질 농도를 측정하였다.
실시예 3: 재조합 엑소좀의 특성 분석
본 발명의 일 실시예에 따라 제조된 재조합 엑소좀(SIRPα-엑소좀)의 품질과 특징은 하기와 같이 웨스턴블랏(WB), 유세포분석(flow cytometry), 동적 광 산란(DLS) 및 투과전자현미경(TEM)을 이용하여 확인하였다.
우선, 웨스턴 블랏 분석을 위해 상기 초-원심분리된 재조합 엑소좀 펠렛은 프로테이즈 저해제 칵테일(Protease Inhibitor Cocktail, Calbiochem)을 포함하는 RIPA 완충액(Cell Signaling Technology)를 이용하여 용해하였고 엑소좀 단백질 동량(10 μg)을 SDS-PAGE로 분석하였으며, 나이트로셀룰로스 막(membranes)으로 전사시켰다. 그 후, SIRPα 발현을 탐지하기 위하여 블랏에 항-Myc 항체(1:3000, Abcam, ab9106) 및 항-HA 항체(1:500, Santa Crus, sc-805)를 첨가한 후 4℃의 조건으로 하룻밤 동안 방치하였고 항-Alix 항체(1:500, Santa Crus, sc-99010), 항-Tsg101 항체(1:500, Santa Crus, sc-22774) 및 항-CD63 항체(1:500, Santa Crus, sc-15363)를 엑소좀 마커(exosome marker)로 사용하였다. 그 후 상기 막에 HRP-결합된 2차 항체(1:4000, Sigma-Aldrich)를 첨가하였고 화학발광(chemiluminescence)에 의해 시각화되었다. 또한, 엑소좀 표면의 SIRPα의 발현을 유세포분석(flow cytometry)을 이용하여 분석하였다. 먼저, 엑소좀 10 μg을 상온에서 2시간동안 최종 볼륨 1 ml PBS에서 4 μm 알데하이드/설페이트 라텍스 비드(Invitrogen)로 삽입하였고 그 후, 0.5 % BSA를 첨가한 PBS로 2번 세척하였으며 Alexa fluor 488-표지된 2차 항체(1:800, Jackson ImmunoResearch)와 배양한 후 4℃에서 1시간동안 항-Myc 항체(1:400, Abcam, ab9106)와 함께 배양하여 SIRPα를 염색하였다. 형광신호(Fluorescence signals)는 AccuriTM C6 유세포 분석기(BD biosciences) 및 FlowJo_V10 소프트웨어(FlowJo)를 사용하여 분석하였다.
아울러, 재조합 엑소좀의 형태는 먼저, 샘플을 탄소 필름(Electron microscopy science)이 구비된 구리격자(copper grids)에 위치하였고 아세트산 우라닐 용액을 이용하여 음성으로 염색하였다. SIRPα의 내부 발현은 면역 전자 현미경 이미지를 통하여 확인하였고 표면 SIRPα는 항-Myc 항체(1:100, Abcam, ab9106) 및 금 결합 항체(1:50, Aurion)를 이용하여 캡처하였으며 투과전자현미경(Tecnai)을 이용하여 분석하였다. 마지막으로, 재조합 엑소좀의 크기 분포는 Zetasizer Nano ZS(Malvern Instruments, Ltd., UK)이용한 동적 광산란 분석법(dynamic light scattering, DLS)을 통하여 분석하였고 엑소좀 크기는 장비에서 제공된 소프트웨어를 이용하여 25℃조건으로 173˚의 고정된 각도에서 수 비율(z-average)을 통해 분석하였다.
그 결과, 상기 정제한 SIRPα-엑소좀은 표면 막 상에 SIRPα 변이체(variant)를 보유하고 있고 엑소좀 마커 단백질을 함유하고 있는 것을 관찰하였다(도 2). 또한, 투과 전자 현미경(TEM) 이미지와 동적 광 산란(DLS) 분석 결과 재조합 엑소좀의 평균 크기가 100 nm의 평균 크기를 가진 둥근 모양인 것을 확인하였다(도 3).
실시예 4: 단량체 SIRPα 단백질의 발현 및 정제
본 발명의 일 실시예에 따라 단량체(monomer) SIPRα 단백질(mSIRPα)을 얻기 위해, NH2-Nde I-SIRPα 변이체-Myc-Hind Ⅲ-COOH를 인코딩하는 프라이머를 이용한 PCR 증폭을 통하여 유전자 클론(gene clone)을 제조하였고 상기 유전자 클론은 N-말단 히스티딘 태그와 함께 SIRPα을 발현하기 위해 pET-28a 플라스미드 벡터로 결찰하였다.
이후, 형질전환된 세균 세포는 37℃에서 O.D.600이 0.5가 될 때까지 카나마이신을 포함하는 LB 배지에서 배양하였고 mSIRPα를 생산하기 위하여 0.5 mM 이소프로필 β-D-1-thiogalactopyranoside(IPTG)(Bioneer, 대한민국)를 첨가하여 유도하였다. 20℃에서 18시간 동안 배양한 후에 상기 세포는 6000 g에서 10분 동안 원심분리를 통하여 수득하였고 초음파 분쇄기를 이용하여 균일화한 후 상기 펠렛을 용해 버퍼(1 M Tris-HCl pH 8.0, 150 mM NaCl, 1 mM PMSF)에 재현탁하였으며 Ni-NTA 친화도 크로마토그래피를 통해서 mSIRPα를 정제하였고 항-Myc 항체(1:5000, Abcam, ab9106) 및 HRP-연결된 2차 항체(1:4000, Sigma Aldrich)를 이용한 웨스턴 블랏으로 분석하였다.
그 결과, HEK293T 세포로부터 100 μg의 총 단백질과 SIRPα-엑소좀 2 x 109을 수득하였고 정제된 재조합 SIRPα-Myc 단량체 단백질(mSIRPα)의 웨스턴 블랏 이미지로부터 표준 곡선(standard curve)을 사용하여 엑소좀의 SIRPα의 양을 정량하였으며 상기 측정된 SIRPα-엑소좀의 양은 1 μg exosomes당 5 ng이하로 확인되었다(도 4). 상기 PCR 증폭에 사용된 프라이머에 대한 정보를 하기 표 1에 표시하였다.
프라이머 | 염기서열(5'--> 3') | 서열번호 |
Forward | AAA CATATG GAA GAG GAG CTG CAG | 67 |
Reverse | AAA AAGCTT TCA ATT CAG ATC CTC TTC | 68 |
실시예 5: 세포 결합 분석
본 발명의 일 실시예에 따른 세포 결합 분석은 HT29 인간 결장 선암종(ATCC), Raji 인간 B 세포 림프종(ATCC) 및 CT26.CL25 마우스 결장암(ATCC) 세포를 10% FBS 및 1% 항생제를 첨가한 RPMI-1640 배양배지에서 배양하였고 37℃ 및 5 % CO2 조건에서 유지하였다. 그 후, HT29 및 Raji 세포는 항-인간 CD47 항체[B6H12.2](Abcam, ab3283)를 첨가하여 배양하였고 암세포 표면에서 CD47 발현을 탐지하기 위하여 CT26.CL25 세포는 항-마우스 CD47 항체(Santa Crus, sc-12731)를 첨가하여 배양하였다. 세포 결합 분석을 위해, HT29, Raji 및 CT26.CL25 세포(1 x 106)는 PBS, 엑소좀 또는 mSIRPα를 첨가하여 4℃에서 30분 동안 배양하였다. 그 후, 상기 세포는 항-Myc 항체(1:400, Abcam, ab9106)를 첨가하여 배양하였고 Alexa fluor 488-결합된 2차 항체(1:800, Jackson ImmunoResearch)를 첨가하여 탐지하였다. 이어서, 상기 세포는 AccuriTM C6 유세포 분석기(BD Biosciences)를 이용하여 측정하였고 FlowJo_V10 소프트웨어(FlowJo)를 이용하여 분석하였다. SIRPα-엑소좀의 CD47에 대한 결합 특이성은 항-인간 CD47 항체(1:100, Abcam, ab3283)를 첨가한 세포를 전-배양하는 방법을 통한 블록 실험으로 분석하였다.
또한, 형광현미경 분석을 위해서, HT29 세포(2 x 105)는 상술한 바와 같이, 유리 바닥 4웰 챔버에 파종하였고 항-Myc 항체(1:400, Abcam, ab9106) 및 Alexa fluor 488-결합된 2차 항체(1:800, Jackson ImmunoResearch)를 첨가하여 배양하였다. 잔류 비-특이성 신호(non-specific signals)의 제거 후에 상기 세포는 Hoechst 33258를 이용하여 25℃에서 10분 동안 핵 염색 후에 4 % 파라포름알데하이드를 이용하여 7분간 고정하였다. 엑소좀의 세포 결합 능력은 형광현미경(Nikon Eclipse Ti, Nikon)으로 관찰하였고 LAS AF Lite 소프트웨어(Leica)를 이용하여 분석하였다.
그 결과, 종양 세포를 엑소좀과 함께 배양하여 CD47+ 인간 종양 세포주에서 세포 표면 CD47을 길항하는 SIRPα-엑소좀의 능력을 확인하였다(도 5). 또한, SIRPα-엑소좀은 효과가 SIRPα-엑소좀 농도 의존적으로 확인된 대조군의 엑소좀과 비교하여 HT29 종양 세포 표면의 결합에서 더 높은 CD47에 대한 친화력을 나타내었다. SIRPα-엑소좀의 결합은 항-인간 CD47 항체와의 사전 배양에 의해 감소되어, SIRPα-엑소좀이 종양 세포 표면의 CD47에 특이적으로 결합한다는 것을 나타내었고 인간 Raji Burkitt's 림프종(Raji) 및 마우스 CT26.CL25 결장암 세포에서 SIRPα-엑소좀의 CD47 결합의 유사한 결과를 관찰하였다. 상기 결과는 엑소좀에서 막-연관 SIRPα 변이체의 발현이 암 세포에서 CD47에 결합하는 능력을 가지고 있음을 말해준다(도 6 및 7).
실시예 6: 식균작용 분석
본 발명의 일 실시예에 따라 종양 세포의 길항작용을 가진 CD47이 종양 세포의 대식세포 매개 식균작용(phagocytosis)을 증가시키는 여부를 관찰하기 위해 식균작용 분석을 수행하였다. 구체적으로 체외(In vitro) 식균작용 분석을 위한 골수 유래 대식세포(BMDMs)를 제조하기 위해, BALB/c 마우스를 희생시키고 골수 세포를 다리 뼈(leg bones)로부터 분리하였다. 상기 분리한 골수 세포를 10 % FBS 및 1 % 항생제가 첨가된 RPMI 배지에서 유지시키고 7일 동안 대식세포 콜로니-자극인자(M-CSF)로 분화시켰다. 식균작용은 BMDM과 암 세포를 무-혈청 RPMI 배지에서 4 시간 동안 공 배양하여 분석하였다. 유세포 분석을 위해, 분화된 대식세포(2.5 x 105)는 0.5 μM CellTrackerTM Green으로 염색하였고 엑소좀 또는 mSIRPα 단백질을 암세포와 사전 배양 한 후, BMDM을 4시간 동안 혼합물과 함께 배양하였다. 식균작용의 비율은 AccuriTM C6 유세포 분석기(BD biosciences) 및 FlowJo_V10 소프트웨어(FlowJo)를 사용하여 이중 양성신호(double positive signals)의 백분율로 평가하였다.
또한, 식균작용 지수(phagocytosis index, PI)를 측정하기 위한 형광 현미경 분석을 위해, CellTrackerTM Green(Thermo fisher scientific)으로 염색한 BMDM을 2.5 x 105의 밀도로 35 mm 유리 바닥 디쉬에 파종하고, HT29 세포(1 x 106)의 혼합물을 pHrodo Deep red(Thermo fisher scientific)로 염색하였고 엑소좀을 대식세포로 처리하였다. 4 시간의 공배양 후, 대식세포에 의한 HT29 세포의 탐식(engulfment)은 형광 현미경(Nikon Eclipse Ti, Nikon)에 의해 대식세포에서의 포식세포 형성과 관련된 적색 양성 신호로 분석하였다.
그 결과, 이중 양성 신호(진한 적색 및 녹색)를 갖는 대식세포의 식균작용은 대조군(PBS-처리 또는 대조군-엑소좀-처리)과 비교하여 SIRPα-엑소좀 처리군에서 농도 의존적으로 증가하는 것으로 나타났고(도 8) SIRPα-엑소좀을 처리한 Raji 및 CT26.CL25 결장암 세포에서도 유사하게 나타났다. 또한, SIRPα-엑소좀의 처리가 종양 세포의 탐식을 증가시키고 이에 따라 PI가 SIRPα-엑소좀 처리군에서 유의하게 증가한 것으로 나타났다(도 9). 따라서 SIRPα-엑소좀에 의한 CD47-SIRPα 상호작용을 차단하는 것은 골수 유래 대식세포(BMDMs)에 의해 다양한 암세포의 식균작용의 증가를 유도한다는 것을 말해준다.
실시예 7: 생체분포(biodistribution) 연구
본 발명의 일 실시예에 따라 SIRPα-엑소좀의 생체 분포를 조사하기 위해, 엑소좀을 Cy5.5-NHS로 표지 하였고 Cy5.5-NHS 염료(1 ㎍)를 100 ㎍의 엑소좀에 처리한 후, 실온에서 2 시간 동안 배양하였으며, airfuse 원심분리기(Beckman coulter)를 사용하여 45분 동안 원심분리하였다. 이후 비-결합된 염료를 제거하기 위해 2회 세척을 수행한 후에 표지된 엑소좀 펠릿을 PBS에 재현탁하였고 형광 강도(fluorescence intensity)는 형광 마이크로 플레이트 판독기(Infinite M200 Pro, TECAN)를 사용하여 측정하고 조정하였다. 또한, HT29 종양 보유 BALB/c 누드 마우스에 Cy5.5-표지된 엑소좀(500μg), 유리 염료 및 PBS를 정맥 내(intravenously) 투여 하였고 모든 샘플의 형광 강도는 형광 마이크로 플레이트 판독기로 수득한 데이터에 기초하여 동일한 값으로 조정하였다. 마우스의 생체(In vivo) 전신 이미징은 IVIS 스펙트럼(Caliper Life Sciences)을 사용하여 여러 시점(5분, 2시간, 4시간, 8시간, 16시간 및 24시간)에서 수행하였다. 아울러, 종양의 형광 강도를 분석하기 위해 Analysis Workstation 소프트웨어(Advanced Research Technologies Inc.)를 사용하여 관심 영역(ROI)에서 입체각(steradian) 당 센티미터 스퀘어 당 총 광자(total photons)를 계산하였고 주입 후 24시간 경과시점에서 마우스를 희생시키고 간, 폐, 비장, 신장 및 심장을 포함한 종양 및 주요 기관을 상기와 동일한 방법으로 절제하고 분석하였다.
그 결과, 절제된 종양의 평균 중량은 종양 성장의 관찰된 퇴화(regression)와 일치하여 대조군보다 SIRPα-엑소좀 처리군에서 현저히 낮게 나타났다(도 10).
실시예 8: 항-종양 효과 분석
본 발명의 일 실시예에 따라 생체내 실험(in vivo experiments)을 위해 면역-결핍(immuno-deficient) BALB/c 누드 마우스 및 면역 감응(immunocompetent) BALB/c 마우스는 7주령된 시점에서 종양을 이식하고 한국 과학 기술 연구원 (KIST)의 수용시설에서 관리되었다. 그 후, HT29 세포(1 × 107)를 BALB/c 누드 마우스의 왼쪽 다리에 피하 접종하였고 종양을 일주일 동안 성장시킨 다음, 대조군-엑소좀, SIRPα-엑소좀 및 대조군 PBS를 3일마다 5회씩 주입하였다. 그 후, 국소 항-종양 효과의 분석을 위해, 100 μg의 엑소좀을 마우스의 종양 내로 주입하였다. 종양 성장에 대한 SIRPα-엑소 좀의 전신 효과(systemic effect)를 위해, 엑소좀(200 ㎍) 및 PBS를 HT29 종양 보유 마우스에게 3일마다 5회씩 주입하였고 종양이 1000 mm3까지 성장시킨 후 절개하고 무게를 측정하였다. 또한, CT26.CL25 세포(1 × 106)를 면역 감응 BALB/c 마우스의 왼쪽 다리 피하에 이식하였고 평균 크기가 80 mm3인 종양의 안정화를 위해 일주일 경과 후 엑소좀 200 μg, SIRPα-엑소좀 200 μg, mSIRPα 1 μg(SIRPα-엑소좀s 200 μg에서 SIRPα양에 해당) 또는 PBS를 각각 상기 마우스(각각 n = 7 마우스 그룹)의 꼬리 정맥을 통해 주입하였으며 총 5 회 처리가 완료되면 종양을 절개하고 무게를 측정하였다.
그 결과, Cy5.5 염료로 표지된 SIRPα-엑소좀은 종양 부위에 연속적으로 축적되었고 이는 종양 세포에서 과발현된 CD47 과의 상호작용뿐만 아니라 나노 입자와 같은 엑소좀의 침투성 및 보유 효과가 향상되었음을 말해준다(도 11). 또한 체외(ex vivo) 이미지 분석 결과 마우스의 간과 신장에서 Cy5.5로 표지된 엑소좀이 축적되어 전체 동물 이미징 분석 결과를 뒷받침하였고(도 12), SIRPα-엑소좀으로 처리한 마우스는 대조군과 비교하여 종양 성장이 다소 감소하였으나 유의적인 차이를 나타내지는 않았다. 한편, 면역-결핍(immuno-deficient) 및 면역 감응(immunocompetent) 마우스를 이용하여 SIRPα-엑소좀 주입에 따른 항-종양효과를 관찰한 결과, HT29 종양 보유 BALB/c 면역-결핍 마우스에 SIRPα-엑소좀을 투여할 경우 종양의 성장을 약간 감소시키나 유의한 수준이 아니었던 반면, CT26.CL25 종양 보유 면역 감응 BALB/c 마우스에 SIRPα-엑소좀을 투여할 경우에는 매우 우수한 항-종양효과를 나타내었다. 이는 본 발명의 SIRPα-엑소좀의 투여함으로써 면역기능을 경유한 SIRPα-엑소좀의 현저한 항-종양 효과를 입증하는 것이다(도 13 및 14). 한편, 재조합 SiRPα 단백질(mSIRPα)을 투여할 경우에는 암세포의 CD47에 효율적으로 결합할 수 있음에도 불구하고 종양의 식균작용을 제대로 유도하지는 못하였다(도 15).
결론적으로 본 발명의 일 실시예에 따라 제조한 재조합 엑소좀(SIRPα-엑소좀)은 CD47-SIRPα 상호작용을 차단함에 따라서 대식세포와 수지상세포의 식균작용을 증가시켜 시험관내 조건은 물론 동물모델 실험에서 매우 현저한 항-종양 효과를 나타내었으므로 암치료를 위한 신규 항암제로 활용가능하다.
본 발명은 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 당해 기술 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 다른 실시예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 진정한 기술적 보호 범위는 첨부된 특허 청구범위의 기술적 사상에 의하여 정해져야 할 것이다.
<110> Korea Institute of Science and Technology
<120> A novel antitumor agent using exosome
<130> PD17-5615
<150> KR 10-2016-0182573
<151> 2016-12-29
<160> 68
<170> KoPatentIn 3.0
<210> 1
<211> 118
<212> PRT
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<220>
<223> SiRP alpha variant
<400> 1
Glu Glu Glu Leu Gln Ile Ile Gln Pro Asp Lys Ser Val Leu Val Ala
1 5 10 15
Ala Gly Glu Thr Ala Thr Leu Arg Cys Thr Ile Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Thr Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Gly Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro
115
<210> 2
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> human wild type SIRP alpha
<400> 2
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Ser Val Leu Val Ala
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Ala Gly Glu Thr Ala Thr Leu Arg Cys Thr Ala Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Leu Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Gly Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro
115
<210> 3
<211> 119
<212> PRT
<213> Artificial Sequence
<220>
<223> wild type SIRP gamma
<400> 3
Glu Glu Glu Leu Gln Met Ile Gln Pro Glu Lys Leu Leu Leu Val Thr
1 5 10 15
Val Gly Lys Thr Ala Thr Leu His Cys Thr Val Thr Ser Leu Leu Pro
20 25 30
Val Gly Pro Val Leu Trp Phe Arg Gly Val Gly Pro Gly Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Leu Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Ser Ser
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Ile Thr Pro Ala Asp Val Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Glu Asn Val Glu Phe Lys Ser Gly Pro Gly Thr Glu Met
100 105 110
Ala Leu Gly Ala Lys Pro Ser
115
<210> 4
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SIRP gamma variant 1 (V1)
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Glu Glu Glu Leu Gln Ile Ile Gln Pro Glu Lys Leu Leu Leu Val Thr
1 5 10 15
Val Gly Lys Thr Ala Thr Leu His Cys Thr Ile Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Val Leu Trp Phe Arg Gly Val Gly Pro Gly Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Thr Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Ser Ser
65 70 75 80
Ile Thr Pro Ala Asp Val Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Glu Asn Val Glu Phe Lys Ser Gly Pro Gly Thr Glu Met
100 105 110
Ala Leu Gly Ala Lys Pro
115
<210> 5
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SIRP gamma variant 2 (V2)
<400> 5
Glu Glu Glu Leu Gln Ile Ile Gln Pro Glu Lys Leu Leu Leu Val Thr
1 5 10 15
Val Gly Lys Thr Ala Thr Leu His Cys Thr Val Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Val Leu Trp Phe Arg Gly Val Gly Pro Gly Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Thr Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Ser Ser
65 70 75 80
Ile Thr Pro Ala Asp Val Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Glu Asn Val Glu Phe Lys Ser Gly Pro Gly Thr Glu Met
100 105 110
Ala Leu Gly Ala Lys Pro
115
<210> 6
<211> 117
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 6
Glu Glu Glu Val Gln Ile Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Ile Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Ile Ser
50 55 60
Glu Thr Thr Arg Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro
115
<210> 7
<211> 117
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha D1 domain
<400> 7
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Val Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Ser Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro
115
<210> 8
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 8
Glu Glu Glu Val Gln Ile Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Ile Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Ile Ser
50 55 60
Glu Thr Thr Arg Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 9
<211> 119
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 9
Xaa Leu Leu Phe Asn Lys Thr Lys Ser Val Glu Phe Thr Phe Gly Asn
1 5 10 15
Asp Thr Val Val Ile Pro Cys Phe Val Thr Asn Met Glu Ala Gln Asn
20 25 30
Thr Thr Glu Val Tyr Val Lys Trp Lys Phe Lys Gly Arg Asp Ile Tyr
35 40 45
Thr Phe Asp Gly Ala Leu Asn Lys Ser Thr Val Pro Thr Asp Phe Ser
50 55 60
Ser Ala Lys Ile Glu Val Ser Gln Leu Leu Lys Gly Asp Ala Ser Leu
65 70 75 80
Lys Met Asp Lys Ser Asp Ala Val Ser His Thr Gly Asn Tyr Thr Cys
85 90 95
Glu Val Thr Glu Leu Thr Arg Glu Gly Glu Thr Ile Ile Glu Leu Lys
100 105 110
Tyr Arg Val Val Ser Thr Arg
115
<210> 10
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 10
Glu Glu Glu Val Gln Ile Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Ile Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Ile Ser
50 55 60
Glu Thr Thr Arg Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 11
<211> 121
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 11
Xaa Leu Leu Phe Asn Lys Thr Lys Ser Val Glu Phe Thr Phe Gly Asn
1 5 10 15
Asp Thr Val Val Ile Pro Cys Phe Val Thr Asn Met Glu Ala Gln Asn
20 25 30
Thr Thr Glu Val Tyr Val Lys Trp Lys Phe Lys Gly Arg Asp Ile Tyr
35 40 45
Thr Phe Asp Gly Ala Leu Asn Lys Ser Thr Val Pro Thr Asp Phe Ser
50 55 60
Ser Ala Lys Ile Glu Val Ser Gln Leu Leu Lys Gly Asp Ala Ser Leu
65 70 75 80
Lys Met Asp Lys Ser Asp Ala Val Ser His Thr Gly Asn Tyr Thr Cys
85 90 95
Glu Val Thr Glu Leu Thr Arg Glu Gly Glu Thr Ile Ile Glu Leu Lys
100 105 110
Tyr Arg Val Val Ser Trp Ser Thr Arg
115 120
<210> 12
<211> 120
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 12
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Val Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Ser Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser Thr Arg
115 120
<210> 13
<211> 120
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 13
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Val Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Ser Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser Thr Arg
115 120
<210> 14
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 14
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Ile Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Arg Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Thr Thr Arg Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Val Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 15
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 15
Glu Glu Glu Val Gln Val Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Leu Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Gly Thr Arg Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 16
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 16
Glu Glu Glu Val Gln Ile Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Val Ile Leu His Cys Thr Ile Thr Ser Leu Thr Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Leu Leu
35 40 45
Ile Tyr Asn Gln Arg Glu Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Thr Thr Arg Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Leu Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 17
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 17
Glu Glu Glu Leu Gln Ile Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Ile Thr Ser Leu Ser Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Gly Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Leu Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 18
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 18
Glu Glu Glu Ile Gln Val Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Val Ile Ile His Cys Thr Val Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Arg Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Gly Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Val Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Val Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 19
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 19
Glu Glu Glu Val Gln Ile Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ile Ile Leu His Cys Thr Val Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Glu Gly Arg Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Gly Thr Arg Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Leu Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 20
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 20
Glu Glu Glu Val Gln Leu Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Val Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Glu Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Gly Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Val Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 21
<211> 119
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 21
Glu Glu Glu Leu Gln Ile Ile Gln Pro Asp Lys Ser Val Leu Val Ala
1 5 10 15
Ala Gly Glu Thr Ala Thr Leu Arg Cys Thr Ile Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Thr Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Gly Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro Ser
115
<210> 22
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 22
Glu Glu Glu Leu Gln Ile Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Ile Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Leu Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Thr Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 23
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 23
Glu Glu Glu Val Gln Ile Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Ile Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Lys Gln Gly Pro Phe Pro Arg Val Thr Thr Ile Ser
50 55 60
Glu Thr Thr Arg Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 24
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 24
Glu Glu Glu Leu Gln Ile Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Ile Thr Ser Leu Thr Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Gly Thr Arg Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Val Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 25
<211> 119
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 25
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Ser Val Leu Val Ala
1 5 10 15
Ala Gly Glu Thr Ala Thr Leu Arg Cys Thr Ala Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Leu Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Gly Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro Ser
115
<210> 26
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 26
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Val Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Ser Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 27
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 27
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu Leu Cys Thr Val Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Ser Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 28
<211> 119
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 28
Glu Glu Gly Leu Gln Val Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Ala Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Leu Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Gly Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro Ser
115
<210> 29
<211> 119
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 29
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Phe Val Leu Val Ala
1 5 10 15
Ala Gly Glu Thr Ala Thr Leu Arg Cys Thr Ala Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Leu Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Gly Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro Ser
115
<210> 30
<211> 119
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 30
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Ser Val Leu Val Ala
1 5 10 15
Ala Gly Glu Thr Ala Thr Leu Arg Cys Thr Ala Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Leu Thr Lys Arg Asn Asn Met Asp Phe Pro Ile Arg Ile Gly Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro Ser
115
<210> 31
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 31
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Val Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Ser Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Gly Lys Pro Ser
115
<210> 32
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 32
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Ser Val Leu Val Ala
1 5 10 15
Ala Gly Glu Thr Ala Thr Leu Arg Cys Thr Ala Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Ser Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 33
<211> 119
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 33
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Ser Val Leu Val Ala
1 5 10 15
Ala Gly Glu Thr Ala Thr Leu Arg Cys Thr Ala Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Leu Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro Ser
115
<210> 34
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 34
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Val Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Ser Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 35
<211> 119
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 35
Glu Glu Glu Xaa Gln Xaa Ile Gln Pro Asp Lys Ser Val Leu Val Ala
1 5 10 15
Ala Gly Glu Thr Xaa Thr Leu Arg Cys Thr Xaa Thr Ser Leu Xaa Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Xaa Leu
35 40 45
Ile Tyr Asn Gln Xaa Xaa Gly Xaa Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Xaa Thr Xaa Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Gly Xaa
65 70 75 80
Ile Thr Xaa Ala Asp Ala Gly Thr Tyr Tyr Cys Xaa Lys Xaa Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Xaa Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro Ser
115
<210> 36
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 36
Glu Glu Glu Xaa Gln Xaa Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Xaa Ile Leu His Cys Thr Xaa Thr Ser Leu Xaa Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Xaa Leu
35 40 45
Ile Tyr Asn Gln Xaa Xaa Gly Xaa Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Xaa Thr Xaa Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Xaa
65 70 75 80
Ile Thr Xaa Ala Asp Ala Gly Thr Tyr Tyr Cys Xaa Lys Xaa Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Xaa Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 37
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 37
Glu Glu Glu Xaa Gln Xaa Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Xaa Ile Leu Leu Cys Thr Xaa Thr Ser Leu Xaa Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Xaa Leu
35 40 45
Ile Tyr Asn Gln Xaa Xaa Gly Xaa Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Xaa Thr Xaa Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Xaa
65 70 75 80
Ile Thr Xaa Ala Asp Ala Gly Thr Tyr Tyr Cys Xaa Lys Xaa Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Xaa Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 38
<211> 119
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 38
Glu Glu Gly Xaa Gln Xaa Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Xaa Ile Leu His Cys Thr Xaa Thr Ser Leu Xaa Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Xaa Leu
35 40 45
Ile Tyr Asn Gln Xaa Xaa Gly Xaa Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Xaa Thr Xaa Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Gly Xaa
65 70 75 80
Ile Thr Xaa Ala Asp Ala Gly Thr Tyr Tyr Cys Xaa Lys Xaa Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Xaa Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro Ser
115
<210> 39
<211> 119
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 39
Glu Glu Glu Xaa Gln Xaa Ile Gln Pro Asp Lys Phe Val Leu Val Ala
1 5 10 15
Ala Gly Glu Thr Xaa Thr Leu Arg Cys Thr Xaa Thr Ser Leu Xaa Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Xaa Leu
35 40 45
Ile Tyr Asn Gln Xaa Xaa Gly Xaa Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Xaa Thr Xaa Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Gly Xaa
65 70 75 80
Ile Thr Xaa Ala Asp Ala Gly Thr Tyr Tyr Cys Xaa Lys Xaa Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Xaa Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro Ser
115
<210> 40
<211> 119
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 40
Glu Glu Glu Xaa Gln Xaa Ile Gln Pro Asp Lys Ser Val Leu Val Ala
1 5 10 15
Ala Gly Glu Thr Xaa Thr Leu Arg Cys Thr Xaa Thr Ser Leu Xaa Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Xaa Leu
35 40 45
Ile Tyr Asn Gln Xaa Xaa Gly Xaa Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Xaa Thr Xaa Arg Asn Asn Met Asp Phe Pro Ile Arg Ile Gly Xaa
65 70 75 80
Ile Thr Xaa Ala Asp Ala Gly Thr Tyr Tyr Cys Xaa Lys Xaa Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Xaa Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro Ser
115
<210> 41
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 41
Glu Glu Glu Xaa Gln Xaa Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Xaa Ile Leu His Cys Thr Xaa Thr Ser Leu Xaa Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Xaa Leu
35 40 45
Ile Tyr Asn Gln Xaa Xaa Gly Xaa Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Xaa Thr Xaa Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Xaa
65 70 75 80
Ile Thr Xaa Ala Asp Ala Gly Thr Tyr Tyr Cys Xaa Lys Xaa Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Xaa Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Gly Lys Pro Ser
115
<210> 42
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 42
Glu Glu Glu Xaa Gln Xaa Ile Gln Pro Asp Lys Ser Val Leu Val Ala
1 5 10 15
Ala Gly Glu Thr Xaa Thr Leu Arg Cys Thr Xaa Thr Ser Leu Xaa Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Xaa Leu
35 40 45
Ile Tyr Asn Gln Xaa Xaa Gly Xaa Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Xaa Thr Xaa Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Xaa
65 70 75 80
Ile Thr Xaa Ala Asp Ala Gly Thr Tyr Tyr Cys Xaa Lys Xaa Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Xaa Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 43
<211> 119
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 43
Glu Glu Glu Xaa Gln Xaa Ile Gln Pro Asp Lys Ser Val Leu Val Ala
1 5 10 15
Ala Gly Glu Thr Xaa Thr Leu Arg Cys Thr Xaa Thr Ser Leu Xaa Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Xaa Leu
35 40 45
Ile Tyr Asn Gln Xaa Xaa Gly Xaa Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Xaa Thr Xaa Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Ser Xaa
65 70 75 80
Ile Thr Xaa Ala Asp Ala Gly Thr Tyr Tyr Cys Xaa Lys Xaa Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Xaa Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro Ser
115
<210> 44
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 44
Glu Glu Glu Xaa Gln Xaa Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Xaa Ile Leu His Cys Thr Xaa Thr Ser Leu Xaa Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Xaa Leu
35 40 45
Ile Tyr Asn Gln Xaa Xaa Gly Xaa Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Xaa Thr Xaa Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Xaa
65 70 75 80
Ile Thr Xaa Ala Asp Ala Gly Thr Tyr Tyr Cys Xaa Lys Xaa Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Xaa Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 45
<211> 119
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 45
Glu Glu Xaa Xaa Gln Xaa Ile Gln Pro Asp Lys Xaa Val Xaa Val Ala
1 5 10 15
Ala Gly Glu Xaa Xaa Xaa Leu Xaa Cys Thr Xaa Thr Ser Leu Xaa Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Xaa Arg Xaa Leu
35 40 45
Ile Tyr Asn Gln Xaa Xaa Gly Xaa Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Xaa Xaa Thr Xaa Arg Xaa Asn Met Asp Phe Xaa Ile Xaa Ile Xaa Xaa
65 70 75 80
Ile Thr Xaa Ala Asp Ala Gly Thr Tyr Tyr Cys Xaa Lys Xaa Arg Lys
85 90 95
Gly Ser Pro Asp Xaa Xaa Glu Xaa Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Xaa Lys Pro Ser
115
<210> 46
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 46
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Ile Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Arg Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Thr Thr Arg Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Val Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 47
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 47
Glu Glu Glu Val Gln Val Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Leu Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Gly Thr Arg Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 48
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 48
Glu Glu Glu Val Gln Ile Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Val Ile Leu His Cys Thr Ile Thr Ser Leu Thr Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Leu Leu
35 40 45
Ile Tyr Asn Gln Arg Glu Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Thr Thr Arg Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Leu Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 49
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 49
Glu Glu Glu Leu Gln Ile Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Ile Thr Ser Leu Ser Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Gly Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Leu Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 50
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 50
Glu Glu Glu Ile Gln Val Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Val Ile Ile His Cys Thr Val Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Arg Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Gly Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Val Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Val Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 51
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 51
Glu Glu Glu Val Gln Ile Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ile Ile Leu His Cys Thr Val Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Glu Gly Arg Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Gly Thr Arg Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Leu Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 52
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 52
Glu Glu Glu Val Gln Leu Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Val Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Glu Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Gly Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Val Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 53
<211> 119
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 53
Glu Glu Glu Leu Gln Ile Ile Gln Pro Asp Lys Ser Val Leu Val Ala
1 5 10 15
Ala Gly Glu Thr Ala Thr Leu Arg Cys Thr Ile Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Thr Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Gly Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro Ser
115
<210> 54
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 54
Glu Glu Glu Leu Gln Ile Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Ile Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Leu Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Thr Thr Lys Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 55
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 55
Glu Glu Glu Val Gln Ile Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Ile Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Lys Gln Gly Pro Phe Pro Arg Val Thr Thr Ile Ser
50 55 60
Glu Thr Thr Arg Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 56
<211> 118
<212> PRT
<213> Artificial Sequence
<220>
<223> SiRP alpha variant
<400> 56
Glu Glu Glu Leu Gln Ile Ile Gln Pro Asp Lys Ser Val Ser Val Ala
1 5 10 15
Ala Gly Glu Ser Ala Ile Leu His Cys Thr Ile Thr Ser Leu Thr Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Ala Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Glu Gly Thr Arg Arg Glu Asn Met Asp Phe Ser Ile Ser Ile Ser Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Thr Glu Val Lys Ser Gly Ala Gly Thr Glu Leu Ser
100 105 110
Val Arg Ala Lys Pro Ser
115
<210> 57
<211> 474
<212> PRT
<213> Artificial Sequence
<220>
<223> human wild type SIRP-alpha(h-wa) full sequence
<400> 57
Glu Glu Glu Leu Gln Val Ile Gln Pro Asp Lys Ser Val Leu Val Ala
1 5 10 15
Ala Gly Glu Thr Ala Thr Leu Arg Cys Thr Ala Thr Ser Leu Ile Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Leu Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Gly Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro Ser Ala Pro Val Val Ser Gly Pro Ala Ala
115 120 125
Arg Ala Thr Pro Gln His Thr Val Ser Phe Thr Cys Glu Ser His Gly
130 135 140
Phe Ser Pro Arg Asp Ile Thr Leu Lys Trp Phe Lys Asn Gly Asn Glu
145 150 155 160
Leu Ser Asp Phe Gln Thr Asn Val Asp Pro Val Gly Glu Ser Val Ser
165 170 175
Tyr Ser Ile His Ser Thr Ala Lys Val Val Leu Thr Arg Glu Asp Val
180 185 190
His Ser Gln Val Ile Cys Glu Val Ala His Val Thr Leu Gln Gly Asp
195 200 205
Pro Leu Arg Gly Thr Ala Asn Leu Ser Glu Thr Ile Arg Val Pro Pro
210 215 220
Thr Leu Glu Val Thr Gln Gln Pro Val Arg Ala Glu Asn Gln Val Asn
225 230 235 240
Val Thr Cys Gln Val Arg Lys Phe Tyr Pro Gln Arg Leu Gln Leu Thr
245 250 255
Trp Leu Glu Asn Gly Asn Val Ser Arg Thr Glu Thr Ala Ser Thr Val
260 265 270
Thr Glu Asn Lys Asp Gly Thr Tyr Asn Trp Met Ser Trp Leu Leu Val
275 280 285
Asn Val Ser Ala His Arg Asp Asp Val Lys Leu Thr Cys Gln Val Glu
290 295 300
His Asp Gly Gln Pro Ala Val Ser Lys Ser His Asp Leu Lys Val Ser
305 310 315 320
Ala His Pro Lys Glu Gln Gly Ser Asn Thr Ala Ala Glu Asn Thr Gly
325 330 335
Ser Asn Glu Arg Asn Ile Tyr Ile Val Val Gly Val Val Cys Thr Leu
340 345 350
Leu Val Ala Leu Leu Met Ala Ala Leu Tyr Leu Val Arg Ile Arg Gln
355 360 365
Lys Lys Ala Gln Gly Ser Thr Ser Ser Thr Arg Leu His Glu Pro Glu
370 375 380
Lys Asn Ala Arg Glu Ile Thr Gln Asp Thr Asn Asp Ile Thr Tyr Ala
385 390 395 400
Asp Leu Asn Leu Pro Lys Gly Lys Lys Pro Ala Pro Gln Ala Ala Glu
405 410 415
Pro Asn Asn His Thr Glu Tyr Ala Ser Ile Gln Thr Ser Pro Gln Pro
420 425 430
Ala Ser Glu Asp Thr Leu Thr Tyr Ala Asp Leu Asp Met Val His Leu
435 440 445
Asn Arg Thr Pro Lys Gln Pro Ala Pro Lys Pro Glu Pro Ser Phe Ser
450 455 460
Glu Tyr Ala Ser Val Gln Val Pro Arg Lys
465 470
<210> 58
<211> 474
<212> PRT
<213> Artificial Sequence
<220>
<223> variant SIRP-alpha(va) full sequence
<400> 58
Glu Glu Glu Leu Gln Ile Ile Gln Pro Asp Lys Ser Val Leu Val Ala
1 5 10 15
Ala Gly Glu Thr Ala Thr Leu Arg Cys Thr Ile Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Ile Gln Trp Phe Arg Gly Ala Gly Pro Gly Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Thr Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Gly Asn
65 70 75 80
Ile Thr Pro Ala Asp Ala Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Asp Asp Val Glu Phe Lys Ser Gly Ala Gly Thr Glu Leu
100 105 110
Ser Val Arg Ala Lys Pro Ser Ala Pro Val Val Ser Gly Pro Ala Ala
115 120 125
Arg Ala Thr Pro Gln His Thr Val Ser Phe Thr Cys Glu Ser His Gly
130 135 140
Phe Ser Pro Arg Asp Ile Thr Leu Lys Trp Phe Lys Asn Gly Asn Glu
145 150 155 160
Leu Ser Asp Phe Gln Thr Asn Val Asp Pro Val Gly Glu Ser Val Ser
165 170 175
Tyr Ser Ile His Ser Thr Ala Lys Val Val Leu Thr Arg Glu Asp Val
180 185 190
His Ser Gln Val Ile Cys Glu Val Ala His Val Thr Leu Gln Gly Asp
195 200 205
Pro Leu Arg Gly Thr Ala Asn Leu Ser Glu Thr Ile Arg Val Pro Pro
210 215 220
Thr Leu Glu Val Thr Gln Gln Pro Val Arg Ala Glu Asn Gln Val Asn
225 230 235 240
Val Thr Cys Gln Val Arg Lys Phe Tyr Pro Gln Arg Leu Gln Leu Thr
245 250 255
Trp Leu Glu Asn Gly Asn Val Ser Arg Thr Glu Thr Ala Ser Thr Val
260 265 270
Thr Glu Asn Lys Asp Gly Thr Tyr Asn Trp Met Ser Trp Leu Leu Val
275 280 285
Asn Val Ser Ala His Arg Asp Asp Val Lys Leu Thr Cys Gln Val Glu
290 295 300
His Asp Gly Gln Pro Ala Val Ser Lys Ser His Asp Leu Lys Val Ser
305 310 315 320
Ala His Pro Lys Glu Gln Gly Ser Asn Thr Ala Ala Glu Asn Thr Gly
325 330 335
Ser Asn Glu Arg Asn Ile Tyr Ile Val Val Gly Val Val Cys Thr Leu
340 345 350
Leu Val Ala Leu Leu Met Ala Ala Leu Tyr Leu Val Arg Ile Arg Gln
355 360 365
Lys Lys Ala Gln Gly Ser Thr Ser Ser Thr Arg Leu His Glu Pro Glu
370 375 380
Lys Asn Ala Arg Glu Ile Thr Gln Asp Thr Asn Asp Ile Thr Tyr Ala
385 390 395 400
Asp Leu Asn Leu Pro Lys Gly Lys Lys Pro Ala Pro Gln Ala Ala Glu
405 410 415
Pro Asn Asn His Thr Glu Tyr Ala Ser Ile Gln Thr Ser Pro Gln Pro
420 425 430
Ala Ser Glu Asp Thr Leu Thr Tyr Ala Asp Leu Asp Met Val His Leu
435 440 445
Asn Arg Thr Pro Lys Gln Pro Ala Pro Lys Pro Glu Pro Ser Phe Ser
450 455 460
Glu Tyr Ala Ser Val Gln Val Pro Arg Lys
465 470
<210> 59
<211> 359
<212> PRT
<213> Artificial Sequence
<220>
<223> wild type SIRP-gamma(wg) full sequence
<400> 59
Glu Glu Glu Leu Gln Met Ile Gln Pro Glu Lys Leu Leu Leu Val Thr
1 5 10 15
Val Gly Lys Thr Ala Thr Leu His Cys Thr Val Thr Ser Leu Leu Pro
20 25 30
Val Gly Pro Val Leu Trp Phe Arg Gly Val Gly Pro Gly Arg Glu Leu
35 40 45
Ile Tyr Asn Gln Lys Glu Gly His Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Leu Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Ser Ser
65 70 75 80
Ile Thr Pro Ala Asp Val Gly Thr Tyr Tyr Cys Val Lys Phe Arg Lys
85 90 95
Gly Ser Pro Glu Asn Val Glu Phe Lys Ser Gly Pro Gly Thr Glu Met
100 105 110
Ala Leu Gly Ala Lys Pro Ser Ala Pro Val Val Leu Gly Pro Ala Ala
115 120 125
Arg Thr Thr Pro Glu His Thr Val Ser Phe Thr Cys Glu Ser His Gly
130 135 140
Phe Ser Pro Arg Asp Ile Thr Leu Lys Trp Phe Lys Asn Gly Asn Glu
145 150 155 160
Leu Ser Asp Phe Gln Thr Asn Val Asp Pro Thr Gly Gln Ser Val Ala
165 170 175
Tyr Ser Ile Arg Ser Thr Ala Arg Val Val Leu Asp Pro Trp Asp Val
180 185 190
Arg Ser Gln Val Ile Cys Glu Val Ala His Val Thr Leu Gln Gly Asp
195 200 205
Pro Leu Arg Gly Thr Ala Asn Leu Ser Glu Ala Ile Arg Val Pro Pro
210 215 220
Thr Leu Glu Val Thr Gln Gln Pro Met Arg Val Gly Asn Gln Val Asn
225 230 235 240
Val Thr Cys Gln Val Arg Lys Phe Tyr Pro Gln Ser Leu Gln Leu Thr
245 250 255
Trp Ser Glu Asn Gly Asn Val Cys Gln Arg Glu Thr Ala Ser Thr Leu
260 265 270
Thr Glu Asn Lys Asp Gly Thr Tyr Asn Trp Thr Ser Trp Phe Leu Val
275 280 285
Asn Ile Ser Asp Gln Arg Asp Asp Val Val Leu Thr Cys Gln Val Lys
290 295 300
His Asp Gly Gln Leu Ala Val Ser Lys Arg Leu Ala Leu Glu Val Thr
305 310 315 320
Val His Gln Lys Asp Gln Ser Ser Asp Ala Thr Pro Gly Pro Ala Ser
325 330 335
Ser Leu Thr Ala Leu Leu Leu Ile Ala Val Leu Leu Gly Pro Ile Tyr
340 345 350
Val Pro Trp Lys Gln Lys Thr
355
<210> 60
<211> 358
<212> PRT
<213> Artificial Sequence
<220>
<223> variant SIRP-gamma-1 (vg-1) full sequence
<400> 60
Glu Glu Glu Leu Gln Ile Ile Gln Pro Glu Lys Leu Leu Leu Val Thr
1 5 10 15
Val Gly Lys Thr Ala Thr Leu His Cys Thr Ile Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Val Leu Trp Phe Arg Gly Val Gly Pro Gly Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Thr Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Ser Ser
65 70 75 80
Ile Thr Pro Ala Asp Val Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Glu Asn Val Glu Phe Lys Ser Gly Pro Gly Thr Glu Met
100 105 110
Ala Leu Gly Ala Lys Pro Ala Pro Val Val Leu Gly Pro Ala Ala Arg
115 120 125
Thr Thr Pro Glu His Thr Val Ser Phe Thr Cys Glu Ser His Gly Phe
130 135 140
Ser Pro Arg Asp Ile Thr Leu Lys Trp Phe Lys Asn Gly Asn Glu Leu
145 150 155 160
Ser Asp Phe Gln Thr Asn Val Asp Pro Thr Gly Gln Ser Val Ala Tyr
165 170 175
Ser Ile Arg Ser Thr Ala Arg Val Val Leu Asp Pro Trp Asp Val Arg
180 185 190
Ser Gln Val Ile Cys Glu Val Ala His Val Thr Leu Gln Gly Asp Pro
195 200 205
Leu Arg Gly Thr Ala Asn Leu Ser Glu Ala Ile Arg Val Pro Pro Thr
210 215 220
Leu Glu Val Thr Gln Gln Pro Met Arg Val Gly Asn Gln Val Asn Val
225 230 235 240
Thr Cys Gln Val Arg Lys Phe Tyr Pro Gln Ser Leu Gln Leu Thr Trp
245 250 255
Ser Glu Asn Gly Asn Val Cys Gln Arg Glu Thr Ala Ser Thr Leu Thr
260 265 270
Glu Asn Lys Asp Gly Thr Tyr Asn Trp Thr Ser Trp Phe Leu Val Asn
275 280 285
Ile Ser Asp Gln Arg Asp Asp Val Val Leu Thr Cys Gln Val Lys His
290 295 300
Asp Gly Gln Leu Ala Val Ser Lys Arg Leu Ala Leu Glu Val Thr Val
305 310 315 320
His Gln Lys Asp Gln Ser Ser Asp Ala Thr Pro Gly Pro Ala Ser Ser
325 330 335
Leu Thr Ala Leu Leu Leu Ile Ala Val Leu Leu Gly Pro Ile Tyr Val
340 345 350
Pro Trp Lys Gln Lys Thr
355
<210> 61
<211> 358
<212> PRT
<213> Artificial Sequence
<220>
<223> variant SIRP-gamma-2 (vg-2) full sequence
<400> 61
Glu Glu Glu Leu Gln Ile Ile Gln Pro Glu Lys Leu Leu Leu Val Thr
1 5 10 15
Val Gly Lys Thr Ala Thr Leu His Cys Thr Val Thr Ser Leu Phe Pro
20 25 30
Val Gly Pro Val Leu Trp Phe Arg Gly Val Gly Pro Gly Arg Val Leu
35 40 45
Ile Tyr Asn Gln Arg Gln Gly Pro Phe Pro Arg Val Thr Thr Val Ser
50 55 60
Asp Thr Thr Lys Arg Asn Asn Met Asp Phe Ser Ile Arg Ile Ser Ser
65 70 75 80
Ile Thr Pro Ala Asp Val Gly Thr Tyr Tyr Cys Ile Lys Phe Arg Lys
85 90 95
Gly Ser Pro Glu Asn Val Glu Phe Lys Ser Gly Pro Gly Thr Glu Met
100 105 110
Ala Leu Gly Ala Lys Pro Ala Pro Val Val Leu Gly Pro Ala Ala Arg
115 120 125
Thr Thr Pro Glu His Thr Val Ser Phe Thr Cys Glu Ser His Gly Phe
130 135 140
Ser Pro Arg Asp Ile Thr Leu Lys Trp Phe Lys Asn Gly Asn Glu Leu
145 150 155 160
Ser Asp Phe Gln Thr Asn Val Asp Pro Thr Gly Gln Ser Val Ala Tyr
165 170 175
Ser Ile Arg Ser Thr Ala Arg Val Val Leu Asp Pro Trp Asp Val Arg
180 185 190
Ser Gln Val Ile Cys Glu Val Ala His Val Thr Leu Gln Gly Asp Pro
195 200 205
Leu Arg Gly Thr Ala Asn Leu Ser Glu Ala Ile Arg Val Pro Pro Thr
210 215 220
Leu Glu Val Thr Gln Gln Pro Met Arg Val Gly Asn Gln Val Asn Val
225 230 235 240
Thr Cys Gln Val Arg Lys Phe Tyr Pro Gln Ser Leu Gln Leu Thr Trp
245 250 255
Ser Glu Asn Gly Asn Val Cys Gln Arg Glu Thr Ala Ser Thr Leu Thr
260 265 270
Glu Asn Lys Asp Gly Thr Tyr Asn Trp Thr Ser Trp Phe Leu Val Asn
275 280 285
Ile Ser Asp Gln Arg Asp Asp Val Val Leu Thr Cys Gln Val Lys His
290 295 300
Asp Gly Gln Leu Ala Val Ser Lys Arg Leu Ala Leu Glu Val Thr Val
305 310 315 320
His Gln Lys Asp Gln Ser Ser Asp Ala Thr Pro Gly Pro Ala Ser Ser
325 330 335
Leu Thr Ala Leu Leu Leu Ile Ala Val Leu Leu Gly Pro Ile Tyr Val
340 345 350
Pro Trp Lys Gln Lys Thr
355
<210> 62
<211> 357
<212> DNA
<213> Artificial Sequence
<220>
<223> polynucleotide encoding SiRP alpha variant
<400> 62
gaagaggagc tgcagatcat ccagcctgac aagtccgtgc tggtcgctgc tggtgaaact 60
gccactctgc gttgtacgat taccagcctg ttcccggtgg gtccaatcca gtggttccgt 120
ggtgctggtc cgggtcgtgt tctgatctac aaccagcgtc aaggtccgtt cccgcgtgta 180
actaccgtta gcgataccac gaagcgtaac aacatggact tttccatccg cattggcaat 240
attaccccgg ccgacgcggg cacctactat tgcatcaaat ttcgcaaagg ctccccggat 300
gatgtagaat ttaaatctgg cgcaggcacc gaactgtctg ttcgcgcaaa accgtaa 357
<210> 63
<211> 357
<212> DNA
<213> Artificial Sequence
<220>
<223> human wild type SIRP alpha
<400> 63
gaggaggaat tacaggtcat tcaaccagat aaatcggtct tagtagcagc cggagagaca 60
gctacattga gatgtacggc gacaagcctt attcccgtgg ggccgatcca atggtttcgc 120
ggggcaggcc ccggaagaga attgatttac aaccagaagg agggtcattt ccctcgcgtg 180
acgacggtca gcgacttaac taagcgtaat aacatggatt tttcaataag aataggcaat 240
ataactccgg ccgacgcagg gacgtactac tgtgttaaat tccggaaggg atctccggat 300
gatgtcgagt tcaaatctgg ggcgggtaca gaattgagcg ttcgggcaaa gccctaa 357
<210> 64
<211> 354
<212> DNA
<213> Artificial Sequence
<220>
<223> wild type SIRP gamma
<400> 64
gaggaagaat tgcaaatgat ccagccggaa aaattattac tggttaccgt gggaaaaacg 60
gcgacccttc attgcacagt cacgtccctg ttgccggtag gtccagtttt gtggttccgg 120
ggggttggac cagggcgtga actgatctat aatcaaaagg aaggtcattt tccgcgcgtg 180
accacagtga gcgatttgac taaacggaac aatatggact tctcgatccg catttctagt 240
attacaccgg cggacgttgg cacttattat tgcgtcaagt tccgcaaagg aagtcctgag 300
aacgtagagt tcaagtccgg tcctggcact gagatggctt tgggtgctaa accc 354
<210> 65
<211> 354
<212> DNA
<213> Artificial Sequence
<220>
<223> polynucleotide encoding SIRP gamma variant 1
<400> 65
gaagaggagc tgcagatcat ccagcctgac aagtccgtgc tggtcgctgc tggtgaaact 60
gccactctgc gttgtacgat taccagcctg ttcccggtgg gtccaatcca gtggttccgt 120
ggtgctggtc cgggtcgtgt tctgatctac aaccagcgtc aaggtccgtt cccgcgtgta 180
actaccgtta gcgataccac gaagcgtaac aacatggact tttccatccg cattggcaat 240
attaccccgg ccgacgcggg cacctactat tgcatcaaat ttcgcaaagg ctccccggat 300
gatgtagaat ttaaatctgg cgcaggcacc gaactgtctg ttcgcgcaaa accg 354
<210> 66
<211> 354
<212> DNA
<213> Artificial Sequence
<220>
<223> polynucleotide encoding SIRP gamma variant 2
<400> 66
gaagaggaat tacaaatcat acaacctgaa aagctgttat tggtcaccgt aggcaaaacc 60
gctactctgc actgcactgt gacgtccctt tttcctgttg gtcctgtctt atggtttcgt 120
ggagtcggtc cgggtcgggt tcttatctat aaccagcggc aaggaccatt cccacgggtt 180
accacggttt cggacacaac gaaacgcaat aacatggatt tttccattcg gatttcaagc 240
atcactccgg ccgacgttgg aacttattac tgcataaagt ttagaaaggg atctccggag 300
aacgtagaat ttaagtctgg tccaggtact gagatggccc ttggagcgaa gccg 354
<210> 67
<211> 24
<212> DNA
<213> Artificial Sequence
<220>
<223> Forward primer
<400> 67
aaacatatgg aagaggagct gcag 24
<210> 68
<211> 27
<212> DNA
<213> Artificial Sequence
<220>
<223> Reverse primer
<400> 68
aaaaagcttt caattcagat cctcttc 27
Claims (14)
- SIRP, 상기 SIRP의 CD47 결합도메인을 포함하는 단편 및 항-CD47 항체로 구성되는 군으로부터 선택되는 CD47과 상호작용하는 탐식작용 촉진 단백질이 엑소좀(exosome) 표면에 제시된, 재조합 엑소좀.
- 제1항에 있어서,
상기 탐식작용 촉진 단백질은 수용체 티로신 카이네이즈의 막통과 도메인의 N-말단에 연결된 융합단백질인, 재조합 엑소좀. - 제2항에 있어서,
상기 수용체 티로신 카이네이즈는 PDGFR(platelent-derived growth factor receptor), EGFR(epidermal growth factor receptor), FGFR(fibroblast growth factor receptor), VEGFR(vascular endothelial growth factor receptor), HGFR(hepatocyte growth factor receptor), Trk(tropomyosin receptor kinase), IR(insulin receptor), LTK(Leukocyte receptor tyrosine kinase), 안지오포이에틴 수용체(angiopoietin receptor), ROR(receptor tyrosine kinase-like orphan receptors), DDR(discoidin domain receptor), RETR(rearranged during transfection receptor), PTK(tyrosine-protein kinase-like), RYK(related to receptor tyrosine kinase), 또는 MuSK(muscle-specific kinase)인, 재조합 엑소좀. - 삭제
- 제1항에 있어서,
상기 SIRP는 SIRPα, SIRPγ 또는 이들의 고친화성 변이체인, 재조합 엑소좀. - 제5항에 있어서,
상기 SIRP는 서열번호 1 내지 61 중 어느 하나의 아미노산 서열로 구성되는, 재조합 엑소좀. - 제1항에 있어서,
상기 엑소좀은 내부에 항암제를 포함하는, 재조합 엑소좀. - 제7항에 있어서,
상기 항암제는 아스파라기네이즈, 보툴리눔 독소(Botulinum toxin), 테타누스 독소(Tetanus toxin), 시가 독소(Shiga toxin), 디프테리아 독소(Diphtheria toxin, DT), 리신(ricin), 슈도모나스 외독소(Pseudomonas exotoxin, PE), 사이토라이신 A(cytolysin A, ClyA), γ-Gelonin, VEGF(vscular endothelial growth factor), 안지오포이에틴1(angiopoietin 1, Ang1), 안지오포이에틴2(Ang2), 형질전환 성장인자-β(transforming growth factor-β, TGF-β인테그린(integrin), 혈관 내피 캐드헤드린(VE-cadherin), 플라스미노겐 활성제(plasminogen activator, PA), 에프린(ephrin), 혈소판 유래 성장인자(PDGF), 단핵구 주화성 단백질-1(MCP-1, monocyte chemotactic protein-1), 섬유아세포 성장인자(FGF), 태반성장인자(placenta growth factor, PIGF), VHL(von HippelLindau), APC(Adenomatous polyposis coli), CD95(cluster of differentiation 95), ST5(Suppression of tumorigenicity 5), YPEL3(Yippee like 3), ST7(Suppression of tumorigenicity 7) 및 ST14(Suppression of tumorigenicity 14)로 구성되는 군으로부터 선택되는 항암 단백질, VHL(von HippelLindau), APC(Adenomatous polyposis coli), CD95(cluster of differentiation 95), ST5(Suppression of tumorigenicity 5), YPEL3(Yippee like 3), ST7(Suppression of tumorigenicity 7) 및 ST14(Suppression of tumorigenicity 14)로 구성되는 군으로부터 선택되는 종양 억제 유전자 또는 메토트렉세이트(methotrexate), 5-플루오로우라실(5-fluorouracil), 젬시타빈(gemcitabine), 아라비노실시토신(arabinosylcytosine), 히드록시우레아(hydroxy urea), 머캅토퓨린(mercaptopurine) 또는 티오구아닌(thioguanine), 니트로겐 머스타드(nitrogen mustad), 사이클로스포라미드(cyclosporamide), 안트라사이클린(anthracycline), 다우노루비신(daunorubicin), 독소루비신(doxorubicin), 에피루비신(epirubicin), 이다루비신(idarubicin), 픽산트론(pixantrone), 사바루비신(sabarubicin), 발루비신(valrubicin), 악티노마이신 D(actinomycin D), 빈크리스틴(vincristine), 탁솔(taxol), 콤브레타스타틴 A4(combretastatin A4), 푸마길린(Fumagillin), 허비마이신(herbimycin A), 2-메톡시에스트라디올(2-methoxyestradiol), OGT 2115, TNP 470, 트라닐라스트(tranilast), XRP44X, 탈리도마이드(thalidomide), 엔도스타틴(endostatin), 살모신(salmosin), 안지오스타틴(angiostatin), 플라스미노겐(plasminogen), 아포리포단백질(apolipoprotein)의 크링글 도메인(kringle domain), 옥살로플라틴, 카르보틀라틴(carboplatin), 시스플라틴(cisplatin), 보르테조밉(Bortezomib) 및 방사성 핵종(radionuclides)으로 구성되는 군으로부터 선택되는 항암 화합물인, 재조합 엑소좀. - 삭제
- 삭제
- 삭제
- 삭제
- 치료적으로 유효한 양의 제1항 내지 제3항, 및 제5항 내지 제8항 중 어느 한 항의 재조합 엑소좀 및 약학적으로 허용가능한 담체를 포함하는, 항암용 약학적 조성물.
- 제13항에 있어서,
하나 이상의 항암제를 추가로 포함하는 항암용 약학적 조성물.
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