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1.
Renuka Chaudhary Terje Raudsepp Xin-Yuan Guan Hongen Zhang Bhanu P. Chowdhary 《Mammalian genome》1998,9(1):44-49
Microdissected arm specific paints (ASPs) for human (HSA) chromosomes (Chrs) 2, 5, 6, 16, and 19 were used as probes on pig
(SSC) and horse (ECA) metaphase chromosomes. Regions homologous to individual human arms were delineated in the two species
studied. Of the ten ASPs used, HSA6 and 16 ASPs showed complete synteny conservation of individual arms as single blocks/arms
both in pig and horse. A similar trend was, in general, also observed for HSA19 ASPs. However, contrary to these observations,
synteny conservation of individual arms of HSA2 and HSA5 was not observed in pig and horse. The arm specific painting data,
coupled with the available gene mapping data, showed that, although HSA2 corresponded to two arms/chromosomes each in pig
and horse, the breakpoint of this synteny in humans was not located at the centromere, but at HSA2q13 band. Similarly, arm
specific paints for HSA5 showed that of the two blocks/chromosomes painted in pig and horse, one corresponded to HSA5q13-pter,
the other to HSA5q13-qter. The findings suggest that 5q13 band may also be an evolutionary break point, similar to the one
detected on HSA2q13. The microdissected human arm specific painting probes used in the present work provide more accurate
and refined comparative information on pig and horse chromosomes than that available through the use of human whole chromosome
specific paints.
Received: 1 June 1997 / Accepted: 5 September 1997 相似文献
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Choudhary Renuka Sharma Anil Kumar Sudarshan Upadhyay Ramesh Chandra Singh Sohan Vir Mohanty Ashok 《Molecular and cellular biochemistry》2020,465(1-2):141-153
Molecular and Cellular Biochemistry - Ultraviolet radiations (UVR) are responsible for a wide variety of acute and chronic effects on the animal skin. However, the effect of UVR-induced oxidative... 相似文献
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Heidi W. Trask Richard Cowper-Sal-lari Maureen A. Sartor Jiang Gui Catherine V. Heath Janhavi Renuka Azara-Jane Higgins Peter Andrews Murray Korc Jason H. Moore Craig R. Tomlinson 《RNA (New York, N.Y.)》2009,15(10):1917-1928
With no known exceptions, every published microarray study to determine differential mRNA levels in eukaryotes used RNA extracted from whole cells. It is assumed that the use of whole cell RNA in microarray gene expression analysis provides a legitimate profile of steady-state mRNA. Standard labeling methods and the prevailing dogma that mRNA resides almost exclusively in the cytoplasm has led to the long-standing belief that the nuclear RNA contribution is negligible. We report that unadulterated cytoplasmic RNA uncovers differentially expressed mRNAs that otherwise would not have been detected when using whole cell RNA and that the inclusion of nuclear RNA has a large impact on whole cell gene expression microarray results by distorting the mRNA profile to the extent that a substantial number of false positives are generated. We conclude that to produce a valid profile of the steady-state mRNA population, the nuclear component must be excluded, and to arrive at a more realistic view of a cell''s gene expression profile, the nuclear and cytoplasmic RNA fractions should be analyzed separately. 相似文献
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Renuka R. Nayak William E. Bernal Jessica W. Lee Michael J. Kearns Vivian G. Cheung 《Nucleic acids research》2014,42(3):1757-1771
Cells respond to variable environments by changing gene expression and gene interactions. To study how human cells response to stress, we analyzed the expression of >5000 genes in cultured B cells from nearly 100 normal individuals following endoplasmic reticulum stress and exposure to ionizing radiation. We identified thousands of genes that are induced or repressed. Then, we constructed coexpression networks and inferred interactions among genes. We used coexpression and machine learning analyses to study how genes interact with each other in response to stress. The results showed that for most genes, their interactions with each other are the same at baseline and in response to different stresses; however, a small set of genes acquired new interacting partners to engage in stress-specific responses. These genes with altered interacting partners are associated with diseases in which endoplasmic reticulum stress response or sensitivity to radiation has been implicated. Thus, our findings showed that to understand disease-specific pathways, it is important to identify not only genes that change expression levels but also those that alter interactions with other genes. 相似文献
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Reeta Rani Singhania Dhatri Madduru Pranathi Pappu Sameera Panchangam Renuka Suravajhala Mohanalatha Chandrasekharan 《PLoS computational biology》2014,10(1)
The Women in Biology forum (WiB) of Bioclues (India) began in 2009 to promote and support women pursuing careers in bioinformatics and computational biology. WiB was formed in order to help women scientists deprived of basic research, boost the prominence of women scientists particularly from developing countries, and bridge the gender gap to innovation. WiB has also served as a platform to highlight the work of established female scientists in these fields. Several award-winning women researchers have shared their experiences and provided valuable suggestions to WiB. Headed by Mohanalatha Chandrasekharan and supported by Dr. Reeta Rani Singhania and Renuka Suravajhala, WiB has seen major progress in the last couple of years particularly in the two avenues Mentoring and Research, off the four avenues in Bioclues: Mentoring, Outreach, Research and Entrepreneurship (MORE).In line with the Bioclues vision for bioinformatics in India, the WiB Journal Club (JoC) recognizes women scientists working on functional genomics and bioinformatics, and provides scientific mentorship and support for project design and hypothesis formulation. As a part of Bioclues, WiB members practice the group''s open-desk policy and its belief that all members are free to express their own thoughts and opinions. The WiB forum appreciates suggestions and welcomes scientists from around the world to be a part of their mission to encourage women to pursue computational biology and bioinformatics. 相似文献