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Circadian control of stem/progenitor cell self-renewal and differentiation and of clock controlled gene expression

A technology of clock control and stem cells, applied in the field of rhythm control system

Inactive Publication Date: 2005-06-22
UNIVERSITY OF ROCHESTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of these CCGs have been shown to be regulated in the bone marrow

Method used

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  • Circadian control of stem/progenitor cell self-renewal and differentiation and of clock controlled gene expression
  • Circadian control of stem/progenitor cell self-renewal and differentiation and of clock controlled gene expression
  • Circadian control of stem/progenitor cell self-renewal and differentiation and of clock controlled gene expression

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Experimental program
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Effect test

Embodiment 1 and 2

[0099] In RT-PCR experiments, samples collected at six time points were analyzed each time. Total RNA was purified from Gr-1 positive or non-isolated bone marrow cells using RNeasy MiniKit (Qiagen) according to the instructions. After DNase (Promega) treatment, approximately 2 μg of total RNA was reverse transcribed with Moloney murine leukemia virus reverse transcriptase (MMLV-RT; Stratagene). The reverse transcriptase was then inactivated at 90°C for 5 minutes. According to the instructions, the relative quantitative analysis of mPer1 and mPer2 mRNA at different time points was performed using an internal control (quantitative RNA18S internal standard; Ambion). The 18S non-replication-competing primer (Competimer; Ambion) carries a modified 3' end that blocks DNA polymerase extension. The ratio of 18S non-replication competing primer to 18S primer was 9:1 to reduce the amount of 18S cDNA signal relative to the target gene. 18S cDNA and target cDNA (mPer1 or mPer2) were co...

Embodiment 3

[0115] In RT-PCR experiments, samples collected at six time points were analyzed each time. Use RNeasy MiniKit (Qiagen), follow the instructions, from lin - Or purify total RNA from unisolated bone marrow cells. With SUPERSCRIPT II reverse transcriptase (Gibco), random primers ((Invitrogen, Carlsbad, CA) pairs from 10 6 unseparated bone marrow cells and 2×10 5 a lin - The total RNA extracted from the cells was reverse-transcribed in 20 μl, and the reaction condition was 42° C. for 60 minutes. According to the instructions, the relative quantitative analysis of mPer1, mClock or GATA-2 mRNA at different time points was performed using an internal control (quantitative RNA18S internal standard; Ambion). The 18S non-replication-competing primer (Competimer; Ambion) carries a modified 3' end that blocks DNA polymerase extension. The ratio of 18S non-replication competing primer to 18S primer was 10:1 to reduce the amount of 18S cDNA signal relative to the target gene. 18S cDN...

Embodiment 3 and 4

[0137] The luciferase reporter construct was performed as follows: clone 3a-7 was digested with KpnI and Sad and the excised insert was cloned into the same site of pGL3-Basic ((Promega, Madison, WI) to construct pGL3-3a-7 The DNA fragment between the EcoRI site and the third PmlI site or the first PmlI site and the XbaI site (5' to 3') of pGL3-3a-7 was removed to generate pGL3-3a-31, respectively Or pGL3-3a-39. The pGL3-Elb reporter vector is derived from pG5Elb-Luc (Hsiao et al., "Kennedy's neurogenic disease and the first identified coactivator coupled to the polyglutamine region of the androgen receptor The link between ARA24", J. Biol. Chems ., 274 (29): 20229-20234 (1999), fully cited here, but 5 of the GAL4 binding sites were replaced with the multiple cloning sites of the pBluescript II KS (-) vector (Stratagene) (from KpnI to XbaI). Nucleotides corresponding to 76-351 in Figure 4 were PCR amplified and cloned into the EcoRI and BamHI sites of pGL3-Elb to generate...

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Abstract

Manipulation of the circadian clock system by providing suitable cells with the circadian clock system under conditions that effectively control myeloid cell development, stem cell self-renewal, differentiation and / or function, and clock-controlled gene expression with E-box sequences in the regulatory region , A method for controlling bone marrow cell development, stem cell self-renewal, differentiation and / or function, and a clock with an E-box sequence in the regulatory region to control gene expression. Additionally, in vitro engineered tissues are disclosed that include a plurality of cells or cell types in intimate contact with each other to form the tissue, these cells or cell types having properties that have been modulated to regulate the growth, development and and / or functional rhythmic clock system.

Description

[0001] This application claims prior benefit to US Provisional Patent Application No. 60 / 324,190, filed September 21, 2001, which is hereby incorporated by reference in its entirety. [0002] This invention was made at least in part with support from the National Science Foundation (grant number BES-9631670) and the National Aeronautics and Space Administration (grant number NAG 8-1382). Accordingly, the US Government has certain rights in this invention. field of invention [0003] The present invention relates generally to the use of circadian control systems for in vitro development of stem cells and engineered tissues, in vivo regulation of stem cell and tissue development, and in vitro and in vivo control of clock-controlled gene expression. Background of the invention [0004] The molecular components of the mammalian clock system have recently been identified (Albrecht et al., "Differential responses to light of two puta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N15/09A61K35/28A61P7/00A61P31/04A61P35/00A61P35/02A61P37/04C12N5/02C12N5/0789C12N5/10
CPCA61P7/00A61P31/04A61P35/00A61P35/02A61P37/04C12N5/0647C12N2501/40
Inventor J·H·D·吴Y·-G·陈A·曼塔拉里斯M·赫克曼
Owner UNIVERSITY OF ROCHESTER
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