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Full-Text Articles in Medicine and Health Sciences

Latexin Is Down-Regulated In Hematopoietic Malignancies And Restoration Of Expression Inhibits Lymphoma Growth, Yi Liu, Dianna Howard, Kyle Rector, Carol Swiderski, Jason Brandon, Lawrence Schook, Jayesh Mehta, J. Scott Bryson, Subbarao Bondada, Ying Liang Sep 2012

Latexin Is Down-Regulated In Hematopoietic Malignancies And Restoration Of Expression Inhibits Lymphoma Growth, Yi Liu, Dianna Howard, Kyle Rector, Carol Swiderski, Jason Brandon, Lawrence Schook, Jayesh Mehta, J. Scott Bryson, Subbarao Bondada, Ying Liang

Internal Medicine Faculty Publications

Latexin is a negative regulator of hematopoietic stem cell number in mice. Its dysregulated expression in other tumors led us to hypothesize that latexin may have tumor suppressor properties in hematological malignancies. We found that latexin was down-regulated in a variety of leukemia and lymphoma cell lines as well as in CD34+ cells from the blood and marrow of patients with these malignancies. 5-aza-2'-deoxycytodine treatment and bisulfite sequencing revealed hypermethylation of latexin promoter in tumor cells. Retrovirus-mediated latexin overexpression in A20 mouse lymphoma cells inhibited their in vitro growth by 16 fold and in vivo tumor volume by 2 fold. …


Genetics Of Clusterin Isoform Expression And Alzheimer's Disease Risk, I-Fang Ling, Jiraganya Bhongsatiern, James F. Simpson, David W. Fardo, Steven Estus Apr 2012

Genetics Of Clusterin Isoform Expression And Alzheimer's Disease Risk, I-Fang Ling, Jiraganya Bhongsatiern, James F. Simpson, David W. Fardo, Steven Estus

Sanders-Brown Center on Aging Faculty Publications

The minor allele of rs11136000 within CLU is strongly associated with reduced Alzheimer's disease (AD) risk. The mechanism underlying this association is unclear. Here, we report that CLU1 and CLU2 are the two primary CLU isoforms in human brain; CLU1 and CLU2 share exons 2-9 but differ in exon 1 and proximal promoters. The expression of both CLU1 and CLU2 was increased in individuals with significant AD neuropathology. However, only CLU1 was associated with the rs11136000 genotype, with the minor "protective" rs11136000T allele being associated with increased CLU1 expression. Since CLU1 and CLU2 are predicted to encode intracellular and secreted …