摘要:
Steroid compounds having various oxygen substitution on the steroid nucleus are disclosed. A specific functionality present on many of the steroid compounds is oxygen substitution at both of positions 6 and 7. Thus, certain steroids have oxygen substitution at C6 and C7, and some have specific stereochemistries such as 6 alpha and 7 beta oxygen substitution, and an alpha hydrogen at the 5 position in addition to having 6 alpha and 7 beta oxygen substitution. Steroids having 3,4-epoxy functionality are also disclosed. In addition, steroids having C17 pyran and delta -lactone functionality, with oxygen substitution at C6 and C7, or at C15, of the steroid nucleus, are disclosed.
摘要:
Steroid compounds having various oxygen substitution on the steroid nucleus are disclosed. A specific functionality present on many of the steroid compounds is oxygen substitution at both of positions 6 and 7. Thus, certain steroids have oxygen substitution at C6 and C7, and some have specific stereochemistries such as 6α and 7β oxygen substitution, and an alpha hydrogen at the 5 position in addition to having 6α and 7β oxygen substitution. Steroids having 3,4-epoxy functionality are also disclosed. In addition, steroids having C17 pyran and δ-lactone functionality, with oxygen substitution at C6 and C7, or at C15, of the steroid nucleus, are disclosed.
摘要:
In accordance with various aspects of the invention, CXCR4 antagonists may be used to treat hematopoietic cells, such as progenitor or stem cells, to promote the rate of cellular multiplication, self-renewal, proliferation or expansion. CXCR4 antagonists may be used therapeutically to stimulate hematopoietic stem/progenitor cell multiplication/self-renewal.
摘要:
L'invention se rapporte à la synthèse et à l'utilisation, comme agents thérapeutiques, d'un groupe de substances présentant un squelette de glycérol ou une structure de chaîne aliphatique lié(e) à un atome de phosphore ou à un groupe de tête polaire. Selon le groupe de tête polaire, la substance présente des caractéristiques anticancéreuses, anti-inflammatoires, anti-allergiques ou agissant contre les maladies cardiovasculaires. On décrit aussi des composés de la formule (I) et (II), où n vaut de 0 à 14 et R1 représente un groupe alkyle C12-C20, R2 représente un groupe méthyle et R3 représente un groupe de tête d'analogue d'inositol, un groupe (CH2)mN+(CH3)3 où m vaut de 2 à 10, un groupe de tête de sérine ou un groupe de tête d'éthanolamine, ou de la formule (III) où R1 et R2 sont tels que décrits ci-dessus, n = 0 ou 1, et R3 représente (CH2)mN+(CH3)3 (m=2-10). L'invention se rapporte en outre à la synthèse et à l'utilisation, comme agents thérapeutiques, de substances ne possédant pas de squelette de glycérol, mais qui présentent une structure de chaîne aliphatique directement liée à un atome de phosphore de la formule générale RP(0)(0-) OR', où R représente un groupe alkyle à chaîne longue tel que hexadécyle ou octadécyle et R' représente un groupe de tête tel que choline, glycérol, inositol, éthanolamine ou sérine.
摘要:
In accordance with various aspects of the invention, CXCR4 antagonists may be used to treat hematopoietic cells, such as progenitor or stem cells, to promote the rate of cellular multiplication, self-renewal, proliferation or expansion. CXCR4 antagonists may be used therapeutically to stimulate hematopoietic stem/progenitor cell multiplication/self-renewal.
摘要:
In accordance with various aspects of the invention, CXCR4 agonists, including SDF-1 polypeptides and SDF-1 polypeptide homologues, may be used in reducing the rate of hematopoietic cell multiplication. Methods of the invention may comprise administration of an effective amount of an CXCR4 agonist to cells selected from the group consisting of hematopoietic stem cells and hematopoietic progenitor cells. Cells may be treated in vitro or in vivo in a patient. A therapeutically effective amount of the CXCR4 agonist may be administered to a patient in need of such treatment. Patients in need of such treatments may include, for example patients requiring bone marrow or peripheral blood stem cell transplantation.