Methods and compositions relating to modulation of...

C - Chemistry – Metallurgy – 12 – N

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Details

C12N 5/078 (2010.01) C07K 14/47 (2006.01) C12N 5/10 (2006.01) C12N 15/00 (2006.01) C12N 15/11 (2006.01) C12Q 1/02 (2006.01) C12Q 1/68 (2006.01) G01N 33/68 (2006.01)

Patent

CA 2396062

The invention demonstrates that the transcription factor XBP-1 is a regulator of hepatocyte growth, plasma cell differentiation and T cell subset activity. Methods for identifying modulators of hepatocyte growth, plasma cell differentiation and/or T cell subset activity, using XBP- I -containing indicator compositions or XBP- 1-deficient cells, are provided. Methods of modulating hepatocyte growth, plasma cell differentiation and/or T cell subset activity (e.g., Th2 cytokine production) using agents that modulate the activity of XBP-1 are also provided. Methods for diagnosing disorders associated with aberrant hepatocyte growth, plasma cell differentiation and/or T cell subset activity, by assessing a change in XBP-1 expression, are also provided. XBP-1 deficient cells, animals and embryos, as well as kits for the methods of the invention, are also provided by the invention.

L'invention démontre que le facteur de transcription XBP-1 est un régulateur de la croissance hépatocyte, de la différenciation du plasmocyte et de l'activité du sous-ensemble du lymphocyte T. L'invention concerne des procédés permettant d'identifier des modulateurs de croissance hépatocyte, de la différenciation du plasmocyte et de l'activité du sous-ensemble du lymphocyte T, à l'aide de compositions d'indicateurs contenant le XBP-1ou de cellules pauvres en XBP-1. L'invention concerne également des procédés permettant de moduler la croissance hépatocyte, la différenciation du plasmocyte et/ou l'activité du sous-ensemble du lymphocyte T (par exemple, la production de cytokine Th2) à l'aide d'agents modulant l'activité du XBP-1. L'invention concerne également des procédés permettant de diagnostiquer des troubles liés à la croissance hépatocyte aberrante, à la différenciation du plasmocyte et/ou à l'activité du sous-ensemble du lymphocyte T, par évaluation d'une modification de l'expression du XBP-1. En outre, l'invention concerne des cellules pauvres en XBP-1, des animaux et des embryons, ainsi que des trousses permettant de réaliser les manipulations décrites dans cette invention.

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