[EN] DISLODGEMENT AND RELEASE OF HSC USING ALPHA 9 INTEGRIN ANTAGONIST AND CXCR4 ANTAGONIST [FR] DÉLOGEMENT ET LIBÉRATION DES CSH À L'AIDE D'UN ANTAGONISTE DE L'INTÉGRINE ALPHA 9 ET D'UN ANTAGONISTE DE CXCR4
Tandem deprotection/coupling for peptide synthesis in water at room temperature
作者:Margery Cortes-Clerget、Jean-Yves Berthon、Isabelle Krolikiewicz-Renimel、Laurent Chaisemartin、Bruce H. Lipshutz
DOI:10.1039/c7gc01575e
日期:——
A tandem deprotection/coupling sequence is reported for solution-phasepeptidesynthesis in water under micellar catalysis conditions using the designer surfactant TPGS-750-M. Cbz deprotection followed by peptide coupling in the presence of COMU and 2,6-lutidine afforded polypeptides containing up to 10 amino acid residues. A broad scope characterizes this new technology. No epimerization has been
We report a new late‐stage functionalization of small peptides and cyclopeptides relying on the Negishi cross‐coupling of readily prepared iodotyrosine‐ or iodophenylalanine‐containing peptides with aryl‐, heteroaryl‐, and alkylzinc pivalates or halides. In silico and in vitro determinations of membrane permeability parameters of the modified cyclopeptides showed that in most cases, the solubility
Synthese und biologische Aktivit�t von gesch�tzten Polypeptidsequenzen des ?-Melanophoren-stimulierenden Hormons (?-MSH) des Rindes. Vorl�ufige Mitteilung
The synthesis of beef β-MSH (I) carrying protecting groups on Nα (carbobenzoxy-), Nε (tosyl-), β-COOH (Asp1 with β-CONH2, Asp18 with β-COOCH3), γ-COOH (Glu8 with γ-CONH2), and α-COOH (Asp18 with β-COOCH3) is described. The compound elicits an activity (in vitro, frog skin) of 1.4 × 107 U/g as compared to 1.2 × 109 U/g for βb-MSH and 3.7 × 107 U/g for αb-ACTH.
牛肉的合成β-MSH(I)上携带保护基Ñ α(carbobenzoxy-),N ε(甲苯磺酰基),β-COOH(天冬氨酸1与β-CONH 2,ASP 18与β-COOCH 3),γ -COOH(谷氨酸8与γ-CONH 2),和α-COOH(天冬氨酸18与β-COOCH 3)进行说明。该化合物引起的活性(在体外的1.4×10,蛙皮)7相比U / g至1.2×10 9 U /克为β b -MSH和3.7×10 7为αU /克b -ACTH。
[EN] DISLODGEMENT AND RELEASE OF HSC USING ALPHA 9 INTEGRIN ANTAGONIST AND CXCR4 ANTAGONIST<br/>[FR] DÉLOGEMENT ET LIBÉRATION DES CSH À L'AIDE D'UN ANTAGONISTE DE L'INTÉGRINE ALPHA 9 ET D'UN ANTAGONISTE DE CXCR4
申请人:COMMW SCIENT IND RES ORG
公开号:WO2016090434A1
公开(公告)日:2016-06-16
Haematopoietic stem cell mobilization is a process whereby haematopoietic stem cells are stimulated out of the bone marrow space. Before HSC can mobilize, they must be dislodged and released from the BM stem cell niche in which they reside and are retained by adhesive interactions. Accordingly, in an aspect of the present invention there is provided a method for enhancing dislodgement of HSC and their precursors and progenitors thereof from a BM stem cell binding ligand in vivo or ex vivo, said method comprising administering in vivo or ex vivo an effective amount of an antagonist of an α9 integrin or an active portion thereof and a CXCR4 antagonist or an active portion thereof to the BM stem cell niche. Once mobilized to the peripheral blood (PB) the HSC may be collected for transplant. Methods which enhance mobilization of the HSC can also improve treatments of haematological disorders.