Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\27005807
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 BMC+Bioinformatics
2016 ; 17
(ä): 140
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
pcaReduce: hierarchical clustering of single cell transcriptional profiles
#MMPMID27005807
?urauskien? J
; Yau C
BMC Bioinformatics
2016[Mar]; 17
(ä): 140
PMID27005807
show ga
BACKGROUND: Advances in single cell genomics provide a way of routinely
generating transcriptomics data at the single cell level. A frequent requirement
of single cell expression analysis is the identification of novel patterns of
heterogeneity across single cells that might explain complex cellular states or
tissue composition. To date, classical statistical analysis tools have being
routinely applied, but there is considerable scope for the development of novel
statistical approaches that are better adapted to the challenges of inferring
cellular hierarchies. RESULTS: We have developed a novel agglomerative clustering
method that we call pcaReduce to generate a cell state hierarchy where each
cluster branch is associated with a principal component of variation that can be
used to differentiate two cell states. Using two real single cell datasets, we
compared our approach to other commonly used statistical techniques, such as
K-means and hierarchical clustering. We found that pcaReduce was able to give
more consistent clustering structures when compared to broad and detailed cell
type labels. CONCLUSIONS: Our novel integration of principal components analysis
and hierarchical clustering establishes a connection between the representation
of the expression data and the number of cell types that can be discovered. In
doing so we found that pcaReduce performs better than either technique in
isolation in terms of characterising putative cell states. Our methodology is
complimentary to other single cell clustering techniques and adds to a growing
palette of single cell bioinformatics tools for profiling heterogeneous cell
populations.